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Overview
ETH Balance
0 ETH
Eth Value
$0.00More Info
Private Name Tags
ContractCreator
themanwiththeplan.ethTokenTracker
Latest 25 from a total of 379 transactions
| Transaction Hash |
Method
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Block
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|---|---|---|---|---|---|---|---|---|---|
| Approve | 21326216 | 11 days ago | IN | 0 ETH | 0.00083157 | ||||
| Approve | 21143874 | 36 days ago | IN | 0 ETH | 0.00098369 | ||||
| Approve | 21119327 | 40 days ago | IN | 0 ETH | 0.0002008 | ||||
| Approve | 21119325 | 40 days ago | IN | 0 ETH | 0.00024918 | ||||
| Approve | 20516511 | 124 days ago | IN | 0 ETH | 0.00029231 | ||||
| Approve | 20373741 | 144 days ago | IN | 0 ETH | 0.00018826 | ||||
| Approve | 20366822 | 145 days ago | IN | 0 ETH | 0.00030131 | ||||
| Approve | 20353198 | 147 days ago | IN | 0 ETH | 0.00010495 | ||||
| Approve | 19677552 | 241 days ago | IN | 0 ETH | 0.00070973 | ||||
| Transfer | 19588558 | 253 days ago | IN | 0 ETH | 0.00133956 | ||||
| Approve | 19476775 | 269 days ago | IN | 0 ETH | 0.00240466 | ||||
| Approve | 19435606 | 275 days ago | IN | 0 ETH | 0.00294144 | ||||
| Approve | 19393453 | 281 days ago | IN | 0 ETH | 0.00289056 | ||||
| Approve | 19392864 | 281 days ago | IN | 0 ETH | 0.00415799 | ||||
| Approve | 19392850 | 281 days ago | IN | 0 ETH | 0.00412292 | ||||
| Approve | 19392782 | 281 days ago | IN | 0 ETH | 0.00384288 | ||||
| Approve | 19392755 | 281 days ago | IN | 0 ETH | 0.00400193 | ||||
| Approve | 19392750 | 281 days ago | IN | 0 ETH | 0.00388575 | ||||
| Approve | 19392733 | 281 days ago | IN | 0 ETH | 0.00294388 | ||||
| Approve | 19392730 | 281 days ago | IN | 0 ETH | 0.00318912 | ||||
| Approve | 19392707 | 281 days ago | IN | 0 ETH | 0.00329174 | ||||
| Approve | 19392694 | 281 days ago | IN | 0 ETH | 0.00293192 | ||||
| Approve | 19392692 | 281 days ago | IN | 0 ETH | 0.0027552 | ||||
| Approve | 19392692 | 281 days ago | IN | 0 ETH | 0.00284851 | ||||
| Approve | 19392692 | 281 days ago | IN | 0 ETH | 0.00308179 |
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Contract Name:
ERC20ByMetadrop
Compiler Version
v0.8.21+commit.d9974bed
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2023-11-13 */ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@B7~&@@@@@@@@@@@@@@@@G!:&@@@@@@@@@@@@@@@&5~.&@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@&P~ P@@@@@@@@@@@@&Y^ G@@@@@@@@@@@@#J: G@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#J: G@@@@@@@@@B7. G@@@@@@@@&G!. G@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@G!. G@@@@@&P~ B@@@@@&Y: G@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@&Y^ ~&&#J: ^#&B7. G@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@#7. &@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@G ^5&@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@J ^5&@&: ~P&@&: .7B@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@J .!G@@@@@@J .?B@@@@@@J :Y#@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@J :J#@@@@@@@@@J ^5&@@@@@@@@@? .~P&@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@J ~P&@@@@@@@@@@@@J .7B@@@@@@@@@@@@@? :?#@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@B^?B@@@@@@@@@@@@@@@@B~J#@@@@@@@@@@@@@@@@#!5&@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // // Telegram: t.me/Wokegptt // // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@ @@ // @@ This token was launched using software provided by Metadrop. To learn more or to launch @@ // @@ your own token, visit: https://metadrop.com. See legal info at the end of this file. @@ // @@ @@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // // SPDX-License-Identifier: BUSL-1.1 // Metadrop Contracts (v2.1.0) //// Sources flattened with hardhat v2.17.2 https://hardhat.org // File @openzeppelin/contracts/token/ERC20/[email protected] // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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 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); } // File @openzeppelin/contracts/token/ERC20/extensions/[email protected] // 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 @uniswap/v2-periphery/contracts/interfaces/[email protected] 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); } // File @uniswap/v2-periphery/contracts/interfaces/[email protected] 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; } // File @openzeppelin/contracts/utils/[email protected] // 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/utils/structs/[email protected] // OpenZeppelin Contracts (last updated v4.9.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ```solidity * 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. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } } // File @uniswap/v2-core/contracts/interfaces/[email protected] 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; } // File contracts/ERC20Factory/ERC20/IERC20ConfigByMetadrop.sol // Metadrop Contracts (v2.1.0) /** * * @title IERC20ByMetadrop.sol. Interface for metadrop ERC20 standard * * @author metadrop * */ pragma solidity 0.8.21; interface IERC20ConfigByMetadrop { enum VaultType { unicrypt, metavault } struct ERC20Config { bytes baseParameters; bytes supplyParameters; bytes taxParameters; bytes poolParameters; } struct ERC20BaseParameters { string name; string symbol; bool addLiquidityOnCreate; bool usesDRIPool; } struct ERC20SupplyParameters { uint256 maxSupply; uint256 lpSupply; uint256 projectSupply; uint256 maxTokensPerWallet; uint256 maxTokensPerTxn; uint256 lpLockupInDays; uint256 botProtectionDurationInSeconds; address projectSupplyRecipient; address projectLPOwner; bool burnLPTokens; } struct ERC20TaxParameters { uint256 projectBuyTaxBasisPoints; uint256 projectSellTaxBasisPoints; uint256 taxSwapThresholdBasisPoints; uint256 metadropBuyTaxBasisPoints; uint256 metadropSellTaxBasisPoints; uint256 metadropTaxPeriodInDays; address projectTaxRecipient; address metadropTaxRecipient; uint256 metadropMinBuyTaxBasisPoints; // new in v5 uint256 metadropMinSellTaxBasisPoints; // new in v5 uint256 metadropBuyTaxProportionBasisPoints; // new in v5 uint256 metadropSellTaxProportionBasisPoints; // new in v5 uint256 autoBurnDurationInBlocks; // new in v5 uint256 autoBurnBasisPoints; // new in v5 } struct ERC20PoolParameters { uint256 poolSupply; uint256 poolStartDate; uint256 poolEndDate; uint256 poolVestingInDays; uint256 poolMaxETH; uint256 poolPerAddressMaxETH; uint256 poolMinETH; uint256 poolPerTransactionMinETH; } } // File contracts/Global/IConfigStructures.sol // Metadrop Contracts (v2.1.0) /** * * @title IConfigStructures.sol. Interface for common config structures used accross the platform * * @author metadrop * */ pragma solidity 0.8.21; interface IConfigStructures { enum DropStatus { approved, deployed, cancelled } enum TemplateStatus { live, terminated } // The current status of the mint: // - notEnabled: This type of mint is not part of this drop // - notYetOpen: This type of mint is part of the drop, but it hasn't started yet // - open: it's ready for ya, get in there. // - finished: been and gone. // - unknown: theoretically impossible. enum MintStatus { notEnabled, notYetOpen, open, finished, unknown } struct SubListConfig { uint256 start; uint256 end; uint256 phaseMaxSupply; } struct PrimarySaleModuleInstance { address instanceAddress; string instanceDescription; } struct NFTModuleConfig { uint256 templateId; bytes configData; bytes vestingData; } struct PrimarySaleModuleConfig { uint256 templateId; bytes configData; } struct ProjectBeneficiary { address payable payeeAddress; uint256 payeeShares; } struct VestingConfig { uint256 start; uint256 projectUpFrontShare; uint256 projectVestedShare; uint256 vestingPeriodInDays; uint256 vestingCliff; ProjectBeneficiary[] projectPayees; } struct RoyaltySplitterModuleConfig { uint256 templateId; bytes configData; } struct InLifeModuleConfig { uint256 templateId; bytes configData; } struct InLifeModules { InLifeModuleConfig[] modules; } struct NFTConfig { uint256 supply; string name; string symbol; bytes32 positionProof; bool includePriorPhasesInMintTracking; bool singleMetadataCollection; uint256 reservedAllocation; uint256 assistanceRequestWindowInSeconds; } struct Template { TemplateStatus status; uint16 templateNumber; uint32 loadedDate; address payable templateAddress; string templateDescription; } struct RoyaltyDetails { address newRoyaltyPaymentSplitterInstance; uint96 royaltyFromSalesInBasisPoints; } struct SignedDropMessageDetails { uint256 messageTimeStamp; bytes32 messageHash; bytes messageSignature; } } // File contracts/ERC20Factory/ERC20/IERC20ByMetadrop.sol // Metadrop Contracts (v2.1.0) pragma solidity 0.8.21; /** * @dev Metadrop core ERC-20 contract, interface */ interface IERC20ByMetadrop is IConfigStructures, IERC20, IERC20ConfigByMetadrop, IERC20Metadata { event AutoSwapThresholdUpdated(uint256 oldThreshold, uint256 newThreshold); event ExternalCallError(uint256 identifier); event InitialLiquidityAdded(uint256 tokenA, uint256 tokenB, uint256 lpToken); event LimitsUpdated( uint256 oldMaxTokensPerTransaction, uint256 newMaxTokensPerTransaction, uint256 oldMaxTokensPerWallet, uint256 newMaxTokensPerWallet ); event LiquidityLocked(uint256 lpTokens, uint256 lpLockupInDays); event LiquidityBurned(uint256 lpTokens); event LiquidityPoolCreated(address addedPool); event LiquidityPoolAdded(address addedPool); event LiquidityPoolRemoved(address removedPool); event MetadropTaxBasisPointsChanged( uint256 oldBuyBasisPoints, uint256 newBuyBasisPoints, uint256 oldSellBasisPoints, uint256 newSellBasisPoints ); event ProjectTaxBasisPointsChanged( uint256 oldBuyBasisPoints, uint256 newBuyBasisPoints, uint256 oldSellBasisPoints, uint256 newSellBasisPoints ); event RevenueAutoSwap(); event ProjectTaxRecipientUpdated(address treasury); event UnlimitedAddressAdded(address addedUnlimted); event UnlimitedAddressRemoved(address removedUnlimted); event ValidCallerAdded(bytes32 addedValidCaller); event ValidCallerRemoved(bytes32 removedValidCaller); /** * @dev function {addInitialLiquidity} * * Add initial liquidity to the uniswap pair * * @param vaultFee_ The vault fee in wei. This must match the required fee from the external vault contract. * @param lpLockupInDaysOverride_ The number of days to lock liquidity NOTE you can pass 0 to use the stored value. * This value is an override, and will override a stored value which is LOWER that it. If the value you are passing is * LOWER than the stored value the stored value will not be reduced. * * Example usage 1: When creating the coin the lpLockupInDays is set to 0. This means that on this call the * user can set the lockup to any value they like, as all integer values greater than zero will be used to override * that set in storage. * * Example usage 2: When using a DRI Pool the lockup period is set on this contract and the pool need not know anything * about this setting. The pool can pass back a 0 on this call and know that the existing value stored on this contract * will be used. * @param burnLPTokensOverride_ If the LP tokens should be burned (otherwise they are locked). This is an override field * that can ONLY be used to override a held value of FALSE with a new value of TRUE. * * Example usage 1: When creating the coin the user didn't add liquidity, or specify that the LP tokens were to be burned. * So burnLPTokens is held as FALSE. When they add liquidity they want to lock tokens, so they pass this in as FALSE again, * and it remains FALSE. * * Example usage 2: As above, but when later adding liquidity the user wants to burn the LP. So the stored value is FALSE * and the user passes TRUE into this method. The TRUE overrides the held value of FALSE and the tokens are burned. * * Example uusage 3: The user is using a DRI pool and they have specified on the coin creation that the LP tokens are to * be burned. This contract therefore holds TRUE for burnLPTokens. The DRI pool does not need to know what the user has * selected. It can safely pass back FALSE to this method call and the stored value of TRUE will remain, resulting in the * LP tokens being burned. */ function addInitialLiquidity( uint256 vaultFee_, uint256 lpLockupInDaysOverride_, bool burnLPTokensOverride_ ) external payable; /** * @dev function {isLiquidityPool} * * Return if an address is a liquidity pool * * @param queryAddress_ The address being queried * @return bool The address is / isn't a liquidity pool */ function isLiquidityPool(address queryAddress_) external view returns (bool); /** * @dev function {liquidityPools} * * Returns a list of all liquidity pools * * @return liquidityPools_ a list of all liquidity pools */ function liquidityPools() external view returns (address[] memory liquidityPools_); /** * @dev function {addLiquidityPool} onlyOwner * * Allows the manager to add a liquidity pool to the pool enumerable set * * @param newLiquidityPool_ The address of the new liquidity pool */ function addLiquidityPool(address newLiquidityPool_) external; /** * @dev function {removeLiquidityPool} onlyOwner * * Allows the manager to remove a liquidity pool * * @param removedLiquidityPool_ The address of the old removed liquidity pool */ function removeLiquidityPool(address removedLiquidityPool_) external; /** * @dev function {isUnlimited} * * Return if an address is unlimited (is not subject to per txn and per wallet limits) * * @param queryAddress_ The address being queried * @return bool The address is / isn't unlimited */ function isUnlimited(address queryAddress_) external view returns (bool); /** * @dev function {unlimitedAddresses} * * Returns a list of all unlimited addresses * * @return unlimitedAddresses_ a list of all unlimited addresses */ function unlimitedAddresses() external view returns (address[] memory unlimitedAddresses_); /** * @dev function {addUnlimited} onlyOwner * * Allows the manager to add an unlimited address * * @param newUnlimited_ The address of the new unlimited address */ function addUnlimited(address newUnlimited_) external; /** * @dev function {removeUnlimited} onlyOwner * * Allows the manager to remove an unlimited address * * @param removedUnlimited_ The address of the old removed unlimited address */ function removeUnlimited(address removedUnlimited_) external; /** * @dev function {isValidCaller} * * Return if an address is a valid caller * * @param queryHash_ The code hash being queried * @return bool The address is / isn't a valid caller */ function isValidCaller(bytes32 queryHash_) external view returns (bool); /** * @dev function {validCallers} * * Returns a list of all valid caller code hashes * * @return validCallerHashes_ a list of all valid caller code hashes */ function validCallers() external view returns (bytes32[] memory validCallerHashes_); /** * @dev function {addValidCaller} onlyOwner * * Allows the owner to add the hash of a valid caller * * @param newValidCallerHash_ The hash of the new valid caller */ function addValidCaller(bytes32 newValidCallerHash_) external; /** * @dev function {removeValidCaller} onlyOwner * * Allows the owner to remove a valid caller * * @param removedValidCallerHash_ The hash of the old removed valid caller */ function removeValidCaller(bytes32 removedValidCallerHash_) external; /** * @dev function {setProjectTaxRecipient} onlyOwner * * Allows the manager to set the project tax recipient address * * @param projectTaxRecipient_ New recipient address */ function setProjectTaxRecipient(address projectTaxRecipient_) external; /** * @dev function {setSwapThresholdBasisPoints} onlyOwner * * Allows the manager to set the autoswap threshold * * @param swapThresholdBasisPoints_ New swap threshold in basis points */ function setSwapThresholdBasisPoints( uint16 swapThresholdBasisPoints_ ) external; /** * @dev function {setProjectTaxRates} onlyOwner * * Change the tax rates, subject to only ever decreasing * * @param newProjectBuyTaxBasisPoints_ The new buy tax rate * @param newProjectSellTaxBasisPoints_ The new sell tax rate */ function setProjectTaxRates( uint16 newProjectBuyTaxBasisPoints_, uint16 newProjectSellTaxBasisPoints_ ) external; /** * @dev function {setLimits} onlyOwner * * Change the limits on transactions and holdings * * @param newMaxTokensPerTransaction_ The new per txn limit * @param newMaxTokensPerWallet_ The new tokens per wallet limit */ function setLimits( uint256 newMaxTokensPerTransaction_, uint256 newMaxTokensPerWallet_ ) external; /** * @dev function {limitsEnforced} * * Return if limits are enforced on this contract * * @return bool : they are / aren't */ function limitsEnforced() external view returns (bool); /** * @dev getMetadropBuyTaxBasisPoints * * Return the metadrop buy tax basis points given the timed expiry */ function getMetadropBuyTaxBasisPoints() external view returns (uint256); /** * @dev getMetadropSellTaxBasisPoints * * Return the metadrop sell tax basis points given the timed expiry */ function getMetadropSellTaxBasisPoints() external view returns (uint256); /** * @dev totalBuyTaxBasisPoints * * Provide easy to view tax total: */ function totalBuyTaxBasisPoints() external view returns (uint256); /** * @dev totalSellTaxBasisPoints * * Provide easy to view tax total: */ function totalSellTaxBasisPoints() external view returns (uint256); /** * @dev distributeTaxTokens * * Allows the distribution of tax tokens to the designated recipient(s) * * As part of standard processing the tax token balance being above the threshold * will trigger an autoswap to ETH and distribution of this ETH to the designated * recipients. This is automatic and there is no need for user involvement. * * As part of this swap there are a number of calculations performed, particularly * if the tax balance is above MAX_SWAP_THRESHOLD_MULTIPLE. * * Testing indicates that these calculations are safe. But given the data / code * interactions it remains possible that some edge case set of scenarios may cause * an issue with these calculations. * * This method is therefore provided as a 'fallback' option to safely distribute * accumulated taxes from the contract, with a direct transfer of the ERC20 tokens * themselves. */ function distributeTaxTokens() external; /** * @dev function {rescueETH} onlyOwner * * A withdraw function to allow ETH to be rescued. * * This contract should never hold ETH. The only envisaged scenario where * it might hold ETH is a failed autoswap where the uniswap swap has completed, * the recipient of ETH reverts, the contract then wraps to WETH and the * wrap to WETH fails. * * This feels unlikely. But, for safety, we include this method. * * @param amount_ The amount to withdraw */ function rescueETH(uint256 amount_) external; /** * @dev function {rescueERC20} * * A withdraw function to allow ERC20s (except address(this)) to be rescued. * * This contract should never hold ERC20s other than tax tokens. The only envisaged * scenario where it might hold an ERC20 is a failed autoswap where the uniswap swap * has completed, the recipient of ETH reverts, the contract then wraps to WETH, the * wrap to WETH succeeds, BUT then the transfer of WETH fails. * * This feels even less likely than the scenario where ETH is held on the contract. * But, for safety, we include this method. * * @param token_ The ERC20 contract * @param amount_ The amount to withdraw */ function rescueERC20(address token_, uint256 amount_) external; /** * @dev function {rescueExcessToken} * * A withdraw function to allow ERC20s from this address that are above * the accrued tax balance to be rescued. */ function rescueExcessToken(uint256 amount_) external; /** * @dev Destroys a `value` amount of tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 value) external; /** * @dev Destroys a `value` amount of 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 * `value`. */ function burnFrom(address account, uint256 value) external; } // File contracts/Global/IErrors.sol // Metadrop Contracts (v2.1.0) /** * * @title IErrors.sol. Interface for error definitions used across the platform * * @author metadrop * */ pragma solidity 0.8.21; interface IErrors { enum BondingCurveErrorType { OK, // No error INVALID_NUMITEMS, // The numItem value is 0 SPOT_PRICE_OVERFLOW // The updated spot price doesn't fit into 128 bits } error AdapterParamsMustBeEmpty(); // The adapter parameters on this LZ call must be empty. error AdditionToPoolIsBelowPerTransactionMinimum(); // The contribution amount is less than the minimum. error AdditionToPoolWouldExceedPoolCap(); // This addition to the pool would exceed the pool cap. error AdditionToPoolWouldExceedPerAddressCap(); // This addition to the pool would exceed the per address cap. error AddressAlreadySet(); // The address being set can only be set once, and is already non-0. error AllowanceDecreasedBelowZero(); // You cannot decrease the allowance below zero. error AlreadyInitialised(); // The contract is already initialised: it cannot be initialised twice! error AmountExceedsAvailable(); // You are requesting more token than is available. error ApprovalCallerNotOwnerNorApproved(); // The caller must own the token or be an approved operator. error ApproveFromTheZeroAddress(); // Approval cannot be called from the zero address (indeed, how have you??). error ApproveToTheZeroAddress(); // Approval cannot be given to the zero address. error ApprovalQueryForNonexistentToken(); // The token does not exist. error AuctionStatusIsNotEnded(); // Throw if the action required the auction to be closed, and it isn't. error AuctionStatusIsNotOpen(); // Throw if the action requires the auction to be open, and it isn't. error AuxCallFailed( address[] modules, uint256 value, bytes data, uint256 txGas ); // An auxilliary call from the drop factory failed. error BalanceMismatch(); // An error when comparing balance amounts. error BalanceQueryForZeroAddress(); // Cannot query the balance for the zero address. error BidMustBeBelowTheFloorWhenReducingQuantity(); // Only bids that are below the floor can reduce the quantity of the bid. error BidMustBeBelowTheFloorForRefundDuringAuction(); // Only bids that are below the floor can be refunded during the auction. error BondingCurveError(BondingCurveErrorType error); // An error of the type specified has occured in bonding curve processing. error botProtectionDurationInSecondsMustFitUint128(); // botProtectionDurationInSeconds cannot be too large. error BurnExceedsBalance(); // The amount you have selected to burn exceeds the addresses balance. error BurnFromTheZeroAddress(); // Tokens cannot be burned from the zero address. (Also, how have you called this!?!) error CallerIsNotDepositBoxOwner(); // The caller is not the owner of the deposit box. error CallerIsNotFactory(); // The caller of this function must match the factory address in storage. error CallerIsNotFactoryOrProjectOwner(); // The caller of this function must match the factory address OR project owner address. error CallerIsNotFactoryProjectOwnerOrPool(); // The caller of this function must match the factory address, project owner or pool address. error CallerIsNotTheOwner(); // The caller is not the owner of this contract. error CallerIsNotTheManager(); // The caller is not the manager of this contract. error CallerMustBeLzApp(); // The caller must be an LZ application. error CallerIsNotPlatformAdmin(address caller); // The caller of this function must be part of the platformAdmin group. error CallerIsNotSuperAdmin(address caller); // The caller of this function must match the superAdmin address in storage. error CannotAddLiquidityOnCreateAndUseDRIPool(); // Cannot use both liquidity added on create and a DRIPool in the same token. error CannotPerformDuringAutoswap(); // Cannot call this function during an autoswap. error CannotSetNewOwnerToTheZeroAddress(); // You can't set the owner of this contract to the zero address (address(0)). error CannotSetToZeroAddress(); // The corresponding address cannot be set to the zero address (address(0)). error CannotSetNewManagerToTheZeroAddress(); // Cannot transfer the manager to the zero address (address(0)). error CannotWithdrawThisToken(); // Cannot withdraw the specified token. error CanOnlyReduce(); // The given operation can only reduce the value specified. error CollectionAlreadyRevealed(); // The collection is already revealed; you cannot call reveal again. error ContractIsDecommissioned(); // This contract is decommissioned! error ContractIsPaused(); // The call requires the contract to be unpaused, and it is paused. error ContractIsNotPaused(); // The call required the contract to be paused, and it is NOT paused. error DecreasedAllowanceBelowZero(); // The request would decrease the allowance below zero, and that is not allowed. error DestinationIsNotTrustedSource(); // The destination that is being called through LZ has not been set as trusted. error DeductionsOnBuyExceedOrEqualOneHundredPercent(); // The total of all buy deductions cannot equal or exceed 100%. error DeployerOnly(); // This method can only be called by the deployer address. error DeploymentError(); // Error on deployment. error DepositBoxIsNotOpen(); // This action cannot complete as the deposit box is not open. error DriPoolAddressCannotBeAddressZero(); // The Dri Pool address cannot be the zero address. error GasLimitIsTooLow(); // The gas limit for the LayerZero call is too low. error IncorrectConfirmationValue(); // You need to enter the right confirmation value to call this funtion (usually 69420). error IncorrectPayment(); // The function call did not include passing the correct payment. error InitialLiquidityAlreadyAdded(); // Initial liquidity has already been added. You can't do it again. error InitialLiquidityNotYetAdded(); // Initial liquidity needs to have been added for this to succedd. error InsufficientAllowance(); // There is not a high enough allowance for this operation. error InvalidAdapterParams(); // The current adapter params for LayerZero on this contract won't work :(. error InvalidAddress(); // An address being processed in the function is not valid. error InvalidEndpointCaller(); // The calling address is not a valid LZ endpoint. The LZ endpoint was set at contract creation // and cannot be altered after. Check the address LZ endpoint address on the contract. error InvalidHash(); // The passed hash does not meet requirements. error InvalidMinGas(); // The minimum gas setting for LZ in invalid. error InvalidOracleSignature(); // The signature provided with the contract call is not valid, either in format or signer. error InvalidPayload(); // The LZ payload is invalid error InvalidReceiver(); // The address used as a target for funds is not valid. error InvalidSourceSendingContract(); // The LZ message is being related from a source contract on another chain that is NOT trusted. error InvalidTotalShares(); // Total shares must equal 100 percent in basis points. error LimitsCanOnlyBeRaised(); // Limits are UP ONLY. error LimitTooHigh(); // The limit has been set too high. error ListLengthMismatch(); // Two or more lists were compared and they did not match length. error LiquidityPoolMustBeAContractAddress(); // Cannot add a non-contract as a liquidity pool. error LiquidityPoolCannotBeAddressZero(); // Cannot add a liquidity pool from the zero address. error LPLockUpMustFitUint88(); // LP lockup is held in a uint88, so must fit. error NoTrustedPathRecord(); // LZ needs a trusted path record for this to work. What's that, you ask? error MachineAddressCannotBeAddressZero(); // Cannot set the machine address to the zero address. error ManagerUnauthorizedAccount(); // The caller is not the pending manager. error MaxBidQuantityIs255(); // Validation: as we use a uint8 array to track bid positions the max bid quantity is 255. error MaxPublicMintAllowanceExceeded( uint256 requested, uint256 alreadyMinted, uint256 maxAllowance ); // The calling address has requested a quantity that would exceed the max allowance. error MaxSupplyTooHigh(); // Max supply must fit in a uint128. error MaxTokensPerWalletExceeded(); // The transfer would exceed the max tokens per wallet limit. error MaxTokensPerTxnExceeded(); // The transfer would exceed the max tokens per transaction limit. error MetadataIsLocked(); // The metadata on this contract is locked; it cannot be altered! error MetadropFactoryOnlyOncePerReveal(); // This function can only be called (a) by the factory and, (b) just one time! error MetadropModulesOnly(); // Can only be called from a metadrop contract. error MetadropOracleCannotBeAddressZero(); // The metadrop Oracle cannot be the zero address (address(0)). error MinGasLimitNotSet(); // The minimum gas limit for LayerZero has not been set. error MintERC2309QuantityExceedsLimit(); // The `quantity` minted with ERC2309 exceeds the safety limit. error MintingIsClosedForever(); // Minting is, as the error suggests, so over (and locked forever). error MintToZeroAddress(); // Cannot mint to the zero address. error MintZeroQuantity(); // The quantity of tokens minted must be more than zero. error NewBuyTaxBasisPointsExceedsMaximum(); // Project owner trying to set the tax rate too high. error NewSellTaxBasisPointsExceedsMaximum(); // Project owner trying to set the tax rate too high. error NoETHForLiquidityPair(); // No ETH has been provided for the liquidity pair. error TaxPeriodStillInForce(); // The minimum tax period has not yet expired. error NoPaymentDue(); // No payment is due for this address. error NoRefundForCaller(); // Error thrown when the calling address has no refund owed. error NoStoredMessage(); // There is no stored message matching the passed parameters. error NothingToClaim(); // The calling address has nothing to claim. error NoTokenForLiquidityPair(); // There is no token to add to the LP. error OperationDidNotSucceed(); // The operation failed (vague much?). error OracleSignatureHasExpired(); // A signature has been provided but it is too old. error OwnableUnauthorizedAccount(); // The caller is not the pending owner. error OwnershipNotInitializedForExtraData(); // The `extraData` cannot be set on an uninitialized ownership slot. error OwnerQueryForNonexistentToken(); // The token does not exist. error ParametersDoNotMatchSignedMessage(); // The parameters passed with the signed message do not match the message itself. error ParamTooLargeStartDate(); // The passed parameter exceeds the var type max. error ParamTooLargeEndDate(); // The passed parameter exceeds the var type max. error ParamTooLargeMinETH(); // The passed parameter exceeds the var type max. error ParamTooLargePerAddressMax(); // The passed parameter exceeds the var type max. error ParamTooLargeVestingDays(); // The passed parameter exceeds the var type max. error ParamTooLargePoolSupply(); // The passed parameter exceeds the var type max. error ParamTooLargePoolPerTxnMinETH(); // The passed parameter exceeds the var type max. error PassedConfigDoesNotMatchApproved(); // The config provided on the call does not match the approved config. error PauseCutOffHasPassed(); // The time period in which we can pause has passed; this contract can no longer be paused. error PaymentMustCoverPerMintFee(); // The payment passed must at least cover the per mint fee for the quantity requested. error PermitDidNotSucceed(); // The safeERC20 permit failed. error PlatformAdminCannotBeAddressZero(); // We cannot use the zero address (address(0)) as a platformAdmin. error PlatformTreasuryCannotBeAddressZero(); // The treasury address cannot be set to the zero address. error PoolIsAboveMinimum(); // You required the pool to be below the minimum, and it is not error PoolIsBelowMinimum(); // You required the pool to be above the minimum, and it is not error PoolPhaseIsClosed(); // The block.timestamp is either before the pool is open or after it is closed. error PoolPhaseIsNotAfter(); // The block.timestamp is either before or during the pool open phase. error PoolVestingNotYetComplete(); // Tokens in the pool are not yet vested. error ProjectOwnerCannotBeAddressZero(); // The project owner has to be a non zero address. error ProofInvalid(); // The provided proof is not valid with the provided arguments. error QuantityExceedsRemainingCollectionSupply(); // The requested quantity would breach the collection supply. error QuantityExceedsRemainingPhaseSupply(); // The requested quantity would breach the phase supply. error QuantityExceedsMaxPossibleCollectionSupply(); // The requested quantity would breach the maximum trackable supply error ReferralIdAlreadyUsed(); // This referral ID has already been used; they are one use only. error RequestingMoreThanAvailableBalance(); // The request exceeds the available balance. error RequestingMoreThanRemainingAllocation( uint256 previouslyMinted, uint256 requested, uint256 remainingAllocation ); // Number of tokens requested for this mint exceeds the remaining allocation (taking the // original allocation from the list and deducting minted tokens). error RoyaltyFeeWillExceedSalePrice(); // The ERC2981 royalty specified will exceed the sale price. error ShareTotalCannotBeZero(); // The total of all the shares cannot be nothing. error SliceOutOfBounds(); // The bytes slice operation was out of bounds. error SliceOverflow(); // The bytes slice operation overlowed. error SuperAdminCannotBeAddressZero(); // The superAdmin cannot be the sero address (address(0)). error SupplyTotalMismatch(); // The sum of the team supply and lp supply does not match. error SupportWindowIsNotOpen(); // The project owner has not requested support within the support request expiry window. error SwapThresholdTooLow(); // The select swap threshold is below the minimum. error TaxFreeAddressCannotBeAddressZero(); // A tax free address cannot be address(0) error TemplateCannotBeAddressZero(); // The address for a template cannot be address zero (address(0)). error TemplateNotFound(); // There is no template that matches the passed template Id. error ThisMintIsClosed(); // It's over (well, this mint is, anyway). error TotalSharesMustMatchDenominator(); // The total of all shares must equal the denominator value. error TransferAmountExceedsBalance(); // The transfer amount exceeds the accounts available balance. error TransferCallerNotOwnerNorApproved(); // The caller must own the token or be an approved operator. error TransferFailed(); // The transfer has failed. error TransferFromIncorrectOwner(); // The token must be owned by `from`. error TransferToNonERC721ReceiverImplementer(); // Cannot safely transfer to a contract that does not implement the ERC721Receiver interface. error TransferFromZeroAddress(); // Cannot transfer from the zero address. Indeed, this surely is impossible, and likely a waste to check?? error TransferToZeroAddress(); // Cannot transfer to the zero address. error UnrecognisedVRFMode(); // Currently supported VRF modes are 0: chainlink and 1: arrng error URIQueryForNonexistentToken(); // The token does not exist. error ValueExceedsMaximum(); // The value sent exceeds the maximum allowed (super useful explanation huh?). error VRFCoordinatorCannotBeAddressZero(); // The VRF coordinator cannot be the zero address (address(0)). } // File contracts/ERC20Factory/ERC20Factory/IERC20FactoryByMetadrop.sol // Metadrop Contracts (v2.1.0) pragma solidity 0.8.21; /** * @dev Metadrop ERC-20 factory, interface */ interface IERC20FactoryByMetadrop is IConfigStructures, IErrors, IERC20ConfigByMetadrop { event DriPoolAddressUpdated(address oldAddress, address newAddress); event ERC20Created( string metaId, address indexed deployer, address contractInstance, address driPoolInstance, string symbol, string name, bytes constructorArgs ); event MachineAddressUpdated(address oldAddress, address newAddress); event OracleAddressUpdated(address oldAddress, address newAddress); event MessageValidityInSecondsUpdated( uint256 oldMessageValidityInSeconds, uint256 newMessageValidityInSeconds ); event PlatformTreasuryUpdated(address oldAddress, address newAddress); /** * @dev function {initialiseMachineAddress} * * Initialise the machine template address. This needs to be separate from * the constructor as the machine needs the factory address on its constructor. * * This must ALWAYS be called as part of deployment. * * @param machineTemplate_ the machine address */ function initialiseMachineAddress(address machineTemplate_) external; /** * @dev function {decommissionFactory} onlySuperAdmin * * Make this factory unusable for creating new ERC20s, forever * */ function decommissionFactory() external; /** * @dev function {setMetadropOracleAddress} onlyPlatformAdmin * * Set the metadrop trusted oracle address * * @param metadropOracleAddress_ Trusted metadrop oracle address */ function setMetadropOracleAddress(address metadropOracleAddress_) external; /** * @dev function {setMessageValidityInSeconds} onlyPlatformAdmin * * Set the validity period of signed messages * * @param messageValidityInSeconds_ Validity period in seconds for messages signed by the trusted oracle */ function setMessageValidityInSeconds( uint256 messageValidityInSeconds_ ) external; /** * @dev function {setPlatformTreasury} onlySuperAdmin * * Set the address that platform fees will be paid to / can be withdrawn to. * Note that this is restricted to the highest authority level, the super * admin. Platform admins can trigger a withdrawal to the treasury, but only * the default admin can set or alter the treasury address. It is recommended * that the default admin is highly secured and restrited e.g. a multi-sig. * * @param platformTreasury_ New treasury address */ function setPlatformTreasury(address platformTreasury_) external; /** * @dev function {setMachineAddress} onlyPlatformAdmin * * Set a new machine template address * * @param newMachineAddress_ the new machine address */ function setMachineAddress(address newMachineAddress_) external; /** * @dev function {setDriPoolAddress} onlyPlatformAdmin * * Set a new launch pool template address * * @param newDriPoolAddress_ the new launch pool address */ function setDriPoolAddress(address newDriPoolAddress_) external; /** * @dev function {withdrawETH} onlyPlatformAdmin * * A withdraw function to allow ETH to be withdrawn to the treasury * * @param amount_ The amount to withdraw */ function withdrawETH(uint256 amount_) external; /** * @dev function {withdrawERC20} onlyPlatformAdmin * * A withdraw function to allow ERC20s to be withdrawn to the treasury * * @param token_ The contract address of the token being withdrawn * @param amount_ The amount to withdraw */ function withdrawERC20(IERC20 token_, uint256 amount_) external; /** * @dev function {createERC20} * * Create an ERC-20 * * @param metaId_ The drop Id being approved * @param salt_ Salt for create2 * @param erc20Config_ ERC20 configuration * @param signedMessage_ The signed message object * @param vaultFee_ The fee for the token vault * @param deploymentFee_ The fee for deployment, if any * @return deployedAddress_ The deployed ERC20 contract address */ function createERC20( string calldata metaId_, bytes32 salt_, ERC20Config calldata erc20Config_, SignedDropMessageDetails calldata signedMessage_, uint256 vaultFee_, uint256 deploymentFee_ ) external payable returns (address deployedAddress_); /** * @dev function {createConfigHash} * * Create the config hash * * @param metaId_ The drop Id being approved * @param salt_ Salt for create2 * @param erc20Config_ ERC20 configuration * @param messageTimeStamp_ When the message for this config hash was signed * @param vaultFee_ The fee for the token vault * @param deploymentFee_ The fee for deployment, if any * @param deployer_ Address performing the deployment * @return configHash_ The bytes32 config hash */ function createConfigHash( string calldata metaId_, bytes32 salt_, ERC20Config calldata erc20Config_, uint256 messageTimeStamp_, uint256 vaultFee_, uint256 deploymentFee_, address deployer_ ) external pure returns (bytes32 configHash_); } // File contracts/Global/Revert.sol // Metadrop Contracts (v2.1.0) /** * * @title Revert.sol. For efficient reverts * * @author metadrop * */ pragma solidity 0.8.21; abstract contract Revert { /** * @dev For more efficient reverts. */ function _revert(bytes4 errorSelector) internal pure { assembly { mstore(0x00, errorSelector) revert(0x00, 0x04) } } } // File contracts/Global/OZ/Ownable.sol // Metadrop Contracts (v2.1.0) // Metadrop based on OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity 0.8.21; /** * @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 IErrors, Revert, 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 Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { _revert(CallerIsNotTheOwner.selector); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling 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 { if (newOwner == address(0)) { _revert(CannotSetNewOwnerToTheZeroAddress.selector); } _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 contracts/Global/OZ/Ownable2Step.sol // Metadrop Contracts (v2.1.0) // Metadrop based on OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol) pragma solidity 0.8.21; /** * @dev Contract module which provides access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * The initial owner is specified at deployment time in the constructor for `Ownable`. This * can later be changed with {transferOwnership} and {acceptOwnership}. * * This module is used through inheritance. It will make available all functions * from parent (Ownable). */ abstract contract Ownable2Step is Ownable { address private _pendingOwner; event OwnershipTransferStarted( address indexed previousOwner, address indexed newOwner ); /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view virtual returns (address) { return _pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership( address newOwner ) public virtual override onlyOwner { _pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual override { delete _pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public virtual { address sender = _msgSender(); if (pendingOwner() != sender) { _revert(OwnableUnauthorizedAccount.selector); } _transferOwnership(sender); } } // File @openzeppelin/contracts/token/ERC20/extensions/[email protected] // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); } // File @openzeppelin/contracts/utils/[email protected] // OpenZeppelin Contracts (last updated v4.9.0) (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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or 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 { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } // File contracts/Global/OZ/SafeERC20.sol // Metadrop Contracts (v2.1.0) // Metadrop based on OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity 0.8.21; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value))); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn( token, abi.encodeCall(token.transferFrom, (from, to, value)) ); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 oldAllowance = token.allowance(address(this), spender); forceApprove(token, spender, oldAllowance + value); } /** * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); if (oldAllowance < value) { revert IErrors.DecreasedAllowanceBelowZero(); } forceApprove(token, spender, oldAllowance - value); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to * 0 before setting it to a non-zero value. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value)); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0))); _callOptionalReturn(token, approvalCall); } } /** * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`. * Revert on invalid signature. */ function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); if (nonceAfter != (nonceBefore + 1)) { revert IErrors.PermitDidNotSucceed(); } } /** * @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, "call fail"); if ((returndata.length != 0) && !abi.decode(returndata, (bool))) { revert IErrors.OperationDidNotSucceed(); } } /** * @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). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool( IERC20 token, bytes memory data ) private returns (bool) { // 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 cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0; } } // File contracts/ThirdParty/Unicrypt/IUniswapV2Locker.sol // Interface definition for UniswapV2Locker.sol pragma solidity 0.8.21; interface IERCBurn { function burn(uint256 _amount) external; function approve(address spender, uint256 amount) external returns (bool); function allowance(address owner, address spender) external returns (uint256); function balanceOf(address account) external view returns (uint256); } interface IMigrator { function migrate( address lpToken, uint256 amount, uint256 unlockDate, address owner ) external returns (bool); } interface IUniswapV2Locker { struct UserInfo { EnumerableSet.AddressSet lockedTokens; // records all tokens the user has locked mapping(address => uint256[]) locksForToken; // map erc20 address to lock id for that token } struct TokenLock { uint256 lockDate; // the date the token was locked uint256 amount; // the amount of tokens still locked (initialAmount minus withdrawls) uint256 initialAmount; // the initial lock amount uint256 unlockDate; // the date the token can be withdrawn uint256 lockID; // lockID nonce per uni pair address owner; } struct FeeStruct { uint256 ethFee; // Small eth fee to prevent spam on the platform IERCBurn secondaryFeeToken; // UNCX or UNCL uint256 secondaryTokenFee; // optional, UNCX or UNCL uint256 secondaryTokenDiscount; // discount on liquidity fee for burning secondaryToken uint256 liquidityFee; // fee on univ2 liquidity tokens uint256 referralPercent; // fee for referrals IERCBurn referralToken; // token the refferer must hold to qualify as a referrer uint256 referralHold; // balance the referrer must hold to qualify as a referrer uint256 referralDiscount; // discount on flatrate fees for using a valid referral address } function setDev(address payable _devaddr) external; /** * @notice set the migrator contract which allows locked lp tokens to be migrated to uniswap v3 */ function setMigrator(IMigrator _migrator) external; function setSecondaryFeeToken(address _secondaryFeeToken) external; /** * @notice referrers need to hold the specified token and hold amount to be elegible for referral fees */ function setReferralTokenAndHold( IERCBurn _referralToken, uint256 _hold ) external; function setFees( uint256 _referralPercent, uint256 _referralDiscount, uint256 _ethFee, uint256 _secondaryTokenFee, uint256 _secondaryTokenDiscount, uint256 _liquidityFee ) external; /** * @notice whitelisted accounts dont pay flatrate fees on locking */ function whitelistFeeAccount(address _user, bool _add) external; /** * @notice Creates a new lock * @param _lpToken the univ2 token address * @param _amount amount of LP tokens to lock * @param _unlock_date the unix timestamp (in seconds) until unlock * @param _referral the referrer address if any or address(0) for none * @param _fee_in_eth fees can be paid in eth or in a secondary token such as UNCX with a discount on univ2 tokens * @param _withdrawer the user who can withdraw liquidity once the lock expires. */ function lockLPToken( address _lpToken, uint256 _amount, uint256 _unlock_date, address payable _referral, bool _fee_in_eth, address payable _withdrawer ) external payable; /** * @notice extend a lock with a new unlock date, _index and _lockID ensure the correct lock is changed * this prevents errors when a user performs multiple tx per block possibly with varying gas prices */ function relock( address _lpToken, uint256 _index, uint256 _lockID, uint256 _unlock_date ) external; /** * @notice withdraw a specified amount from a lock. _index and _lockID ensure the correct lock is changed * this prevents errors when a user performs multiple tx per block possibly with varying gas prices */ function withdraw( address _lpToken, uint256 _index, uint256 _lockID, uint256 _amount ) external; /** * @notice increase the amount of tokens per a specific lock, this is preferable to creating a new lock, less fees, and faster loading on our live block explorer */ function incrementLock( address _lpToken, uint256 _index, uint256 _lockID, uint256 _amount ) external; /** * @notice split a lock into two seperate locks, useful when a lock is about to expire and youd like to relock a portion * and withdraw a smaller portion */ function splitLock( address _lpToken, uint256 _index, uint256 _lockID, uint256 _amount ) external payable; /** * @notice transfer a lock to a new owner, e.g. presale project -> project owner */ function transferLockOwnership( address _lpToken, uint256 _index, uint256 _lockID, address payable _newOwner ) external; /** * @notice migrates liquidity to uniswap v3 */ function migrate( address _lpToken, uint256 _index, uint256 _lockID, uint256 _amount ) external; function getNumLocksForToken( address _lpToken ) external view returns (uint256); function getNumLockedTokens() external view returns (uint256); function getLockedTokenAtIndex( uint256 _index ) external view returns (address); // user functions function getUserNumLockedTokens( address _user ) external view returns (uint256); function getUserLockedTokenAtIndex( address _user, uint256 _index ) external view returns (address); function getUserNumLocksForToken( address _user, address _lpToken ) external view returns (uint256); function getUserLockForTokenAtIndex( address _user, address _lpToken, uint256 _index ) external view returns (uint256, uint256, uint256, uint256, uint256, address); // whitelist function getWhitelistedUsersLength() external view returns (uint256); function getWhitelistedUserAtIndex( uint256 _index ) external view returns (address); function getUserWhitelistStatus(address _user) external view returns (bool); } // File contracts/ThirdParty/WETH/IWETH.sol pragma solidity 0.8.21; interface IWETH is IERC20 { function deposit() external payable; function withdraw(uint256 wad) external; } // File contracts/ERC20Factory/ERC20/ERC20ByMetadrop.sol // Metadrop Contracts (v2.1.0) pragma solidity 0.8.21; /** * @dev Metadrop core ERC-20 contract * * @dev Implementation of the {IERC20} interface. * */ contract ERC20ByMetadrop is Context, IERC20ByMetadrop, Ownable2Step { bytes32 public constant x_META_ID_HASH = 0x8707e4cf4b674081695159ca746857e52a71d03189ff20bc21d9f0e8f520480e; using EnumerableSet for EnumerableSet.AddressSet; using EnumerableSet for EnumerableSet.Bytes32Set; using SafeERC20 for IERC20; uint256 public constant x_CONST_VERSION = 100020001000000000; uint256 internal constant CONST_BP_DENOM = 10000; uint256 internal constant CONST_ROUND_DEC = 100000000000; uint256 internal constant CONST_CALL_GAS_LIMIT = 50000; uint256 internal constant CONST_MAX_SWAP_THRESHOLD_MULTIPLE = 20; uint256 internal constant CONST_MIN_SWAP_THRESHOLD_BP = 1; uint256 public immutable lpSupply; uint256 public immutable projectSupply; uint256 public immutable botProtectionDurationInSeconds; uint256 public immutable metadropTaxPeriodInDays; uint256 public immutable metadropBuyTaxProportionBasisPoints; uint256 public immutable metadropSellTaxProportionBasisPoints; uint256 public immutable metadropMinBuyTaxBasisPoints; uint256 public immutable metadropMinSellTaxBasisPoints; uint256 public immutable autoBurnDurationInBlocks; uint256 public immutable autoBurnBasisPoints; address public immutable metadropTaxRecipient; address public immutable uniswapV2Pair; address public immutable driPool; address public immutable lpOwner; address public immutable projectSupplyRecipient; address public immutable metadropFactory; bool internal immutable _tokenHasTax; IUniswapV2Locker internal immutable _tokenVault; IUniswapV2Router02 internal immutable _uniswapRouter; VaultType public immutable vaultType; /** @dev {Storage Slot 1} Vars read as part of transfers packed to a single * slot for warm reads. * Slot 1: * 120 * 32 * 32 * 16 * 4 * 8 * ------ * 256 * ------ */ uint120 private _totalSupply; uint32 public fundedDate; uint32 public fundedBlock; uint16 public projectBuyTaxBasisPoints; uint16 public projectSellTaxBasisPoints; uint16 public metadropBuyTaxBasisPoints; uint16 public metadropSellTaxBasisPoints; /** @dev {_autoSwapInProgress} We start with {_autoSwapInProgress} ON, as we don't want to * call autoswap when processing initial liquidity from this address. We turn this OFF when * liquidity has been loaded, and use this bool to control processing during auto-swaps * from that point onwards. */ bool private _autoSwapInProgress = true; /** @dev {Storage Slot 2} Vars read as part of transfers packed to a single * slot for warm reads. * Slot 1: * 120 * 120 * 16 * ------ * 256 * ------ */ uint120 public maxTokensPerTransaction; uint120 public maxTokensPerWallet; uint16 public swapThresholdBasisPoints; /** @dev {Storage Slot 3} Not read / written in transfers (unless autoswap taking place): * 160 * 88 * 8 * ------ * 256 * ------ */ address public projectTaxRecipient; uint88 public lpLockupInDays; bool public burnLPTokens; /** @dev {Storage Slot 4} Potentially written in transfers: * Slot 3: * 128 * 128 * ------ * 256 * ------ */ uint128 public projectTaxPendingSwap; uint128 public metadropTaxPendingSwap; /** @dev {Storage Slot 5 to n} Not read as part of transfers etc. */ string private _name; string private _symbol; /** @dev {_balances} Addresses balances */ mapping(address => uint256) private _balances; /** @dev {_allowances} Addresses allocance details */ mapping(address => mapping(address => uint256)) private _allowances; /** @dev {_validCallerCodeHashes} Code hashes of callers we consider valid */ EnumerableSet.Bytes32Set private _validCallerCodeHashes; /** @dev {_liquidityPools} Enumerable set for liquidity pool addresses */ EnumerableSet.AddressSet private _liquidityPools; /** @dev {_unlimited} Enumerable set for addresses where limits do not apply */ EnumerableSet.AddressSet private _unlimited; /** * @dev {constructor} * * @param integrationAddresses_ The project owner, uniswap router, unicrypt vault, metadrop factory and pool template. * @param baseParams_ configuration of this ERC20. * @param supplyParams_ Supply configuration of this ERC20. * @param taxParams_ Tax configuration of this ERC20 * @param taxParams_ Launch pool configuration of this ERC20 */ constructor( address[5] memory integrationAddresses_, bytes memory baseParams_, bytes memory supplyParams_, bytes memory taxParams_, bytes memory poolParams_ ) { _decodeBaseParams(integrationAddresses_[0], baseParams_); _uniswapRouter = IUniswapV2Router02(integrationAddresses_[1]); _tokenVault = IUniswapV2Locker(integrationAddresses_[2]); metadropFactory = (integrationAddresses_[3]); ERC20SupplyParameters memory supplyParams = abi.decode( supplyParams_, (ERC20SupplyParameters) ); ERC20TaxParameters memory taxParams = abi.decode( taxParams_, (ERC20TaxParameters) ); driPool = integrationAddresses_[4]; ERC20PoolParameters memory poolParams; if (integrationAddresses_[4] != address(0)) { poolParams = abi.decode(poolParams_, (ERC20PoolParameters)); } _processSupplyParams(supplyParams, poolParams); projectSupplyRecipient = supplyParams.projectSupplyRecipient; lpSupply = supplyParams.lpSupply * (10 ** decimals()); projectSupply = supplyParams.projectSupply * (10 ** decimals()); botProtectionDurationInSeconds = supplyParams .botProtectionDurationInSeconds; lpOwner = supplyParams.projectLPOwner; _tokenHasTax = _processTaxParams(taxParams); metadropTaxPeriodInDays = taxParams.metadropTaxPeriodInDays; metadropTaxRecipient = taxParams.metadropTaxRecipient; metadropBuyTaxProportionBasisPoints = taxParams .metadropBuyTaxProportionBasisPoints; metadropSellTaxProportionBasisPoints = taxParams .metadropSellTaxProportionBasisPoints; metadropMinBuyTaxBasisPoints = uint16( taxParams.metadropMinBuyTaxBasisPoints ); metadropMinSellTaxBasisPoints = uint16( taxParams.metadropMinSellTaxBasisPoints ); autoBurnDurationInBlocks = taxParams.autoBurnDurationInBlocks; autoBurnBasisPoints = taxParams.autoBurnBasisPoints; vaultType = VaultType.unicrypt; _mintBalances( lpSupply, projectSupply, poolParams.poolSupply * (10 ** decimals()) ); uniswapV2Pair = _createPair(); } /** * @dev {onlyOwnerFactoryOrPool} * * Throws if called by any account other than the owner, factory or pool. */ modifier onlyOwnerFactoryOrPool() { if ( metadropFactory != _msgSender() && owner() != _msgSender() && driPool != _msgSender() ) { _revert(CallerIsNotFactoryProjectOwnerOrPool.selector); } _; } /** * @dev {notDuringAutoswap} * * Throws if called during an autoswap */ modifier notDuringAutoswap() { if (_autoSwapInProgress) { _revert(CannotPerformDuringAutoswap.selector); } _; } /** * @dev function {_decodeBaseParams} * * Decode NFT Parameters * * @param projectOwner_ The owner of this contract * @param encodedBaseParams_ The base params encoded into a bytes array */ function _decodeBaseParams( address projectOwner_, bytes memory encodedBaseParams_ ) internal { _transferOwnership(projectOwner_); (_name, _symbol) = abi.decode(encodedBaseParams_, (string, string)); } /** * @dev function {_processSupplyParams} * * Process provided supply params * * @param erc20SupplyParameters_ The supply params * @param erc20PoolParameters_ The pool params */ function _processSupplyParams( ERC20SupplyParameters memory erc20SupplyParameters_, ERC20PoolParameters memory erc20PoolParameters_ ) internal { if ( erc20SupplyParameters_.maxSupply != (erc20SupplyParameters_.lpSupply + erc20SupplyParameters_.projectSupply + erc20PoolParameters_.poolSupply) ) { _revert(SupplyTotalMismatch.selector); } if (erc20SupplyParameters_.maxSupply > type(uint120).max) { _revert(MaxSupplyTooHigh.selector); } if (erc20SupplyParameters_.lpLockupInDays > type(uint88).max) { _revert(LPLockUpMustFitUint88.selector); } if ( erc20SupplyParameters_.botProtectionDurationInSeconds > type(uint128).max ) { _revert(botProtectionDurationInSecondsMustFitUint128.selector); } if (erc20SupplyParameters_.maxTokensPerWallet > type(uint120).max) { _revert(LimitTooHigh.selector); } if (erc20SupplyParameters_.maxTokensPerTxn > type(uint120).max) { _revert(LimitTooHigh.selector); } maxTokensPerWallet = uint120( erc20SupplyParameters_.maxTokensPerWallet * (10 ** decimals()) ); maxTokensPerTransaction = uint120( erc20SupplyParameters_.maxTokensPerTxn * (10 ** decimals()) ); lpLockupInDays = uint88(erc20SupplyParameters_.lpLockupInDays); burnLPTokens = erc20SupplyParameters_.burnLPTokens; _unlimited.add(erc20SupplyParameters_.projectSupplyRecipient); _unlimited.add(address(this)); _unlimited.add(address(0)); } /** * @dev function {_processTaxParams} * * Process provided tax params * * @param erc20TaxParameters_ The tax params */ function _processTaxParams( ERC20TaxParameters memory erc20TaxParameters_ ) internal returns (bool tokenHasTax_) { /** * @dev We use the immutable var {_tokenHasTax} to avoid unneccesary storage writes and reads. If this * token does NOT have tax applied then there is no need to store or read these parameters, and we can * avoid this simply by checking the immutable var. Pass back the value for this var from this method. */ if ( erc20TaxParameters_.projectBuyTaxBasisPoints == 0 && erc20TaxParameters_.projectSellTaxBasisPoints == 0 && erc20TaxParameters_.metadropBuyTaxBasisPoints == 0 && erc20TaxParameters_.metadropSellTaxBasisPoints == 0 ) { return false; } else { // Validate that the sum of all buy deductions does not equal or exceed // 10,000 basis points (i.e. 100%). if ( (erc20TaxParameters_.projectBuyTaxBasisPoints + erc20TaxParameters_.metadropBuyTaxBasisPoints + erc20TaxParameters_.autoBurnBasisPoints) >= CONST_BP_DENOM ) { _revert(DeductionsOnBuyExceedOrEqualOneHundredPercent.selector); } projectBuyTaxBasisPoints = uint16( erc20TaxParameters_.projectBuyTaxBasisPoints ); projectSellTaxBasisPoints = uint16( erc20TaxParameters_.projectSellTaxBasisPoints ); metadropBuyTaxBasisPoints = uint16( erc20TaxParameters_.metadropBuyTaxBasisPoints ); metadropSellTaxBasisPoints = uint16( erc20TaxParameters_.metadropSellTaxBasisPoints ); if ( erc20TaxParameters_.taxSwapThresholdBasisPoints < CONST_MIN_SWAP_THRESHOLD_BP ) { _revert(SwapThresholdTooLow.selector); } swapThresholdBasisPoints = uint16( erc20TaxParameters_.taxSwapThresholdBasisPoints ); projectTaxRecipient = erc20TaxParameters_.projectTaxRecipient; return true; } } /** * @dev function {_mintBalances} * * Mint initial balances * * @param lpMint_ The number of tokens for liquidity * @param projectMint_ The number of tokens for the project treasury * @param poolMint_ The number of tokens for the launch pool */ function _mintBalances( uint256 lpMint_, uint256 projectMint_, uint256 poolMint_ ) internal { if (lpMint_ > 0) { _mint(address(this), lpMint_); } if (projectMint_ > 0) { _mint(projectSupplyRecipient, projectMint_); } if (poolMint_ > 0) { _mint(driPool, poolMint_); } } /** * @dev function {_createPair} * * Create the uniswap pair * * @return uniswapV2Pair_ The pair address */ function _createPair() internal returns (address uniswapV2Pair_) { if (_totalSupply > 0) { uniswapV2Pair_ = IUniswapV2Factory(_uniswapRouter.factory()).createPair( address(this), _uniswapRouter.WETH() ); _liquidityPools.add(uniswapV2Pair_); emit LiquidityPoolCreated(uniswapV2Pair_); } _unlimited.add(address(_uniswapRouter)); _unlimited.add(uniswapV2Pair_); return (uniswapV2Pair_); } /** * @dev function {addInitialLiquidity} * * Add initial liquidity to the uniswap pair * * @param vaultFee_ The vault fee in wei. This must match the required fee from the external vault contract. * @param lpLockupInDaysOverride_ The number of days to lock liquidity NOTE you can pass 0 to use the stored value. * This value is an override, and will override a stored value which is LOWER that it. If the value you are passing is * LOWER than the stored value the stored value will not be reduced. * * Example usage 1: When creating the coin the lpLockupInDays is set to 0. This means that on this call the * user can set the lockup to any value they like, as all integer values greater than zero will be used to override * that set in storage. * * Example usage 2: When using a DRI Pool the lockup period is set on this contract and the pool need not know anything * about this setting. The pool can pass back a 0 on this call and know that the existing value stored on this contract * will be used. * @param burnLPTokensOverride_ If the LP tokens should be burned (otherwise they are locked). This is an override field * that can ONLY be used to override a held value of FALSE with a new value of TRUE. * * Example usage 1: When creating the coin the user didn't add liquidity, or specify that the LP tokens were to be burned. * So burnLPTokens is held as FALSE. When they add liquidity they want to lock tokens, so they pass this in as FALSE again, * and it remains FALSE. * * Example usage 2: As above, but when later adding liquidity the user wants to burn the LP. So the stored value is FALSE * and the user passes TRUE into this method. The TRUE overrides the held value of FALSE and the tokens are burned. * * Example uusage 3: The user is using a DRI pool and they have specified on the coin creation that the LP tokens are to * be burned. This contract therefore holds TRUE for burnLPTokens. The DRI pool does not need to know what the user has * selected. It can safely pass back FALSE to this method call and the stored value of TRUE will remain, resulting in the * LP tokens being burned. */ function addInitialLiquidity( uint256 vaultFee_, uint256 lpLockupInDaysOverride_, bool burnLPTokensOverride_ ) external payable onlyOwnerFactoryOrPool { uint256 ethForLiquidity; if ((burnLPTokens == false) && (burnLPTokensOverride_ == true)) { burnLPTokens = true; } if (burnLPTokens) { if (msg.value == 0) { _revert(NoETHForLiquidityPair.selector); } ethForLiquidity = msg.value; } else { if (vaultFee_ >= msg.value) { // The amount of ETH MUST exceed the vault fee, otherwise what liquidity are we adding? _revert(NoETHForLiquidityPair.selector); } ethForLiquidity = msg.value - vaultFee_; } if (lpLockupInDaysOverride_ > lpLockupInDays) { lpLockupInDays = uint88(lpLockupInDaysOverride_); } _addInitialLiquidity(ethForLiquidity, vaultFee_); } /** * @dev function {_addInitialLiquidity} * * Add initial liquidity to the uniswap pair (internal function that does processing) * * @param ethAmount_ The amount of ETH passed into the call * @param vaultFee_ The vault fee in wei. This must match the required fee from the external vault contract. */ function _addInitialLiquidity( uint256 ethAmount_, uint256 vaultFee_ ) internal { // Funded date is the date of first funding. We can only add initial liquidity once. If this date is set, // we cannot proceed if (fundedDate != 0) { _revert(InitialLiquidityAlreadyAdded.selector); } fundedDate = uint32(block.timestamp); fundedBlock = uint32(block.number); // Can only do this if this contract holds tokens: if (balanceOf(address(this)) == 0) { _revert(NoTokenForLiquidityPair.selector); } // Approve the uniswap router for an inifinite amount (max uint256) // This means that we don't need to worry about later incrememtal // approvals on tax swaps, as the uniswap router allowance will never // be decreased (see code in decreaseAllowance for reference) _approve(address(this), address(_uniswapRouter), type(uint256).max); // Add the liquidity: (uint256 amountA, uint256 amountB, uint256 lpTokens) = _uniswapRouter .addLiquidityETH{value: ethAmount_}( address(this), balanceOf(address(this)), 0, 0, address(this), block.timestamp ); emit InitialLiquidityAdded(amountA, amountB, lpTokens); // We now set this to false so that future transactions can be eligibile for autoswaps _autoSwapInProgress = false; // Are we locking, or burning? if (burnLPTokens) { _burnLiquidity(lpTokens); } else { // Lock the liquidity: _addLiquidityToVault(vaultFee_, lpTokens); } } /** * @dev function {_addLiquidityToVault} * * Lock initial liquidity on vault contract * * @param vaultFee_ The vault fee in wei. This must match the required fee from the external vault contract. * @param lpTokens_ The amount of LP tokens to be locked */ function _addLiquidityToVault(uint256 vaultFee_, uint256 lpTokens_) internal { IERC20(uniswapV2Pair).approve(address(_tokenVault), lpTokens_); _tokenVault.lockLPToken{value: vaultFee_}( uniswapV2Pair, IERC20(uniswapV2Pair).balanceOf(address(this)), block.timestamp + (lpLockupInDays * 1 days), payable(address(0)), true, payable(lpOwner) ); emit LiquidityLocked(lpTokens_, lpLockupInDays); } /** * @dev function {_burnLiquidity} * * Burn LP tokens * * @param lpTokens_ The amount of LP tokens to be locked */ function _burnLiquidity(uint256 lpTokens_) internal { IERC20(uniswapV2Pair).transfer(address(0), lpTokens_); emit LiquidityBurned(lpTokens_); } /** * @dev function {isLiquidityPool} * * Return if an address is a liquidity pool * * @param queryAddress_ The address being queried * @return bool The address is / isn't a liquidity pool */ function isLiquidityPool(address queryAddress_) public view returns (bool) { /** @dev We check the uniswapV2Pair address first as this is an immutable variable and therefore does not need * to be fetched from storage, saving gas if this address IS the uniswapV2Pool. We also add this address * to the enumerated set for ease of reference (for example it is returned in the getter), and it does * not add gas to any other calls, that still complete in 0(1) time. */ return (queryAddress_ == uniswapV2Pair || _liquidityPools.contains(queryAddress_)); } /** * @dev function {liquidityPools} * * Returns a list of all liquidity pools * * @return liquidityPools_ a list of all liquidity pools */ function liquidityPools() external view returns (address[] memory liquidityPools_) { return (_liquidityPools.values()); } /** * @dev function {addLiquidityPool} onlyOwner * * Allows the manager to add a liquidity pool to the pool enumerable set * * @param newLiquidityPool_ The address of the new liquidity pool */ function addLiquidityPool(address newLiquidityPool_) public onlyOwner { // Don't allow calls that didn't pass an address: if (newLiquidityPool_ == address(0)) { _revert(LiquidityPoolCannotBeAddressZero.selector); } // Only allow smart contract addresses to be added, as only these can be pools: if (newLiquidityPool_.code.length == 0) { _revert(LiquidityPoolMustBeAContractAddress.selector); } // Add this to the enumerated list: _liquidityPools.add(newLiquidityPool_); emit LiquidityPoolAdded(newLiquidityPool_); } /** * @dev function {removeLiquidityPool} onlyOwner * * Allows the manager to remove a liquidity pool * * @param removedLiquidityPool_ The address of the old removed liquidity pool */ function removeLiquidityPool( address removedLiquidityPool_ ) external onlyOwner { // Remove this from the enumerated list: _liquidityPools.remove(removedLiquidityPool_); emit LiquidityPoolRemoved(removedLiquidityPool_); } /** * @dev function {isUnlimited} * * Return if an address is unlimited (is not subject to per txn and per wallet limits) * * @param queryAddress_ The address being queried * @return bool The address is / isn't unlimited */ function isUnlimited(address queryAddress_) public view returns (bool) { return (_unlimited.contains(queryAddress_)); } /** * @dev function {unlimitedAddresses} * * Returns a list of all unlimited addresses * * @return unlimitedAddresses_ a list of all unlimited addresses */ function unlimitedAddresses() external view returns (address[] memory unlimitedAddresses_) { return (_unlimited.values()); } /** * @dev function {addUnlimited} onlyOwner * * Allows the manager to add an unlimited address * * @param newUnlimited_ The address of the new unlimited address */ function addUnlimited(address newUnlimited_) external onlyOwner { // Add this to the enumerated list: _unlimited.add(newUnlimited_); emit UnlimitedAddressAdded(newUnlimited_); } /** * @dev function {removeUnlimited} onlyOwner * * Allows the manager to remove an unlimited address * * @param removedUnlimited_ The address of the old removed unlimited address */ function removeUnlimited(address removedUnlimited_) external onlyOwner { // Remove this from the enumerated list: _unlimited.remove(removedUnlimited_); emit UnlimitedAddressRemoved(removedUnlimited_); } /** * @dev function {isValidCaller} * * Return if an address is a valid caller * * @param queryHash_ The code hash being queried * @return bool The address is / isn't a valid caller */ function isValidCaller(bytes32 queryHash_) public view returns (bool) { return (_validCallerCodeHashes.contains(queryHash_)); } /** * @dev function {validCallers} * * Returns a list of all valid caller code hashes * * @return validCallerHashes_ a list of all valid caller code hashes */ function validCallers() external view returns (bytes32[] memory validCallerHashes_) { return (_validCallerCodeHashes.values()); } /** * @dev function {addValidCaller} onlyOwner * * Allows the owner to add the hash of a valid caller * * @param newValidCallerHash_ The hash of the new valid caller */ function addValidCaller(bytes32 newValidCallerHash_) external onlyOwner { _validCallerCodeHashes.add(newValidCallerHash_); emit ValidCallerAdded(newValidCallerHash_); } /** * @dev function {removeValidCaller} onlyOwner * * Allows the owner to remove a valid caller * * @param removedValidCallerHash_ The hash of the old removed valid caller */ function removeValidCaller( bytes32 removedValidCallerHash_ ) external onlyOwner { // Remove this from the enumerated list: _validCallerCodeHashes.remove(removedValidCallerHash_); emit ValidCallerRemoved(removedValidCallerHash_); } /** * @dev function {setProjectTaxRecipient} onlyOwner * * Allows the manager to set the project tax recipient address * * @param projectTaxRecipient_ New recipient address */ function setProjectTaxRecipient( address projectTaxRecipient_ ) external onlyOwner { projectTaxRecipient = projectTaxRecipient_; emit ProjectTaxRecipientUpdated(projectTaxRecipient_); } /** * @dev function {setSwapThresholdBasisPoints} onlyOwner * * Allows the manager to set the autoswap threshold * * @param swapThresholdBasisPoints_ New swap threshold in basis points */ function setSwapThresholdBasisPoints( uint16 swapThresholdBasisPoints_ ) external onlyOwner { if (swapThresholdBasisPoints < CONST_MIN_SWAP_THRESHOLD_BP) { _revert(SwapThresholdTooLow.selector); } uint256 oldswapThresholdBasisPoints = swapThresholdBasisPoints; swapThresholdBasisPoints = swapThresholdBasisPoints_; emit AutoSwapThresholdUpdated( oldswapThresholdBasisPoints, swapThresholdBasisPoints_ ); } /** * @dev function {setProjectTaxRates} onlyOwner * * Change the tax rates, subject to only ever decreasing * * @param newProjectBuyTaxBasisPoints_ The new buy tax rate * @param newProjectSellTaxBasisPoints_ The new sell tax rate */ function setProjectTaxRates( uint16 newProjectBuyTaxBasisPoints_, uint16 newProjectSellTaxBasisPoints_ ) external onlyOwner { uint16 oldBuyTaxBasisPoints = projectBuyTaxBasisPoints; uint16 oldSellTaxBasisPoints = projectSellTaxBasisPoints; // Cannot increase, down only if (newProjectBuyTaxBasisPoints_ > oldBuyTaxBasisPoints) { _revert(CanOnlyReduce.selector); } // Cannot increase, down only if (newProjectSellTaxBasisPoints_ > oldSellTaxBasisPoints) { _revert(CanOnlyReduce.selector); } projectBuyTaxBasisPoints = newProjectBuyTaxBasisPoints_; projectSellTaxBasisPoints = newProjectSellTaxBasisPoints_; // We set the metadrop tax rates off of the project tax rates: // // 1) If the project tax rate is zero then the metadrop tax rate is zero // 2) If the project tax rate is not zero the metadrop tax rate is the // greater of: // a) The metadrop tax proportion basis points of the project rate // b) the base metadrop tax rate. // // Examples: // // A) The project buy tax rate is zero and the sell tax rate is 3%. The metadrop // tax proportion basis points is 1000, meaning the metadrop proportion is 10% of the // project tax rate. The base metadrop tax rate is 50 basis points i.e. 0.5%. // // * Metadrop buy tax = 0% (as the project buy tax is zero) // * Metadrop sell tax = 0.5%. 10% of the project sell tax is 0.3%. As this is below // the base level of 0.5% we set the metadrop tax to 0.5% // // B) The project buy tax rate is 4% and the sell tax rate is 20%. The metadrop tax // proportion basis points is 1000, meaning the metadrop proportion is 10% of the // project tax rate. The base metadrop tax rate is 50 basis points i.e. 0.5%. // // * Metadrop buy tax = 0.5%. 10% of the project rate would be 0.4%, so we use the base rate) // * Metadrop sell tax = 2%. 10% of the project rate is 2%, which is higher than the // base rate of 0.5%. uint16 oldMetadropBuyTaxBasisPoints = metadropBuyTaxBasisPoints; uint16 oldMetadropSellTaxBasisPoints = metadropSellTaxBasisPoints; // Process the buy tax rate first: if (newProjectBuyTaxBasisPoints_ == 0) { metadropBuyTaxBasisPoints = 0; } else { uint256 derivedMetadropBuyTaxRate = (newProjectBuyTaxBasisPoints_ * metadropBuyTaxProportionBasisPoints) / CONST_BP_DENOM; if (derivedMetadropBuyTaxRate < metadropMinBuyTaxBasisPoints) { metadropBuyTaxBasisPoints = uint16(metadropMinBuyTaxBasisPoints); } else { metadropBuyTaxBasisPoints = uint16(derivedMetadropBuyTaxRate); } } // And now the sell tax rate: if (newProjectSellTaxBasisPoints_ == 0) { metadropSellTaxBasisPoints = 0; } else { uint256 derivedMetadropSellTaxRate = (newProjectSellTaxBasisPoints_ * metadropSellTaxProportionBasisPoints) / CONST_BP_DENOM; if (derivedMetadropSellTaxRate < metadropMinSellTaxBasisPoints) { metadropSellTaxBasisPoints = uint16(metadropMinSellTaxBasisPoints); } else { metadropSellTaxBasisPoints = uint16(derivedMetadropSellTaxRate); } } // Emit a message if there has been a change: if ( oldMetadropBuyTaxBasisPoints != metadropBuyTaxBasisPoints || oldMetadropSellTaxBasisPoints != metadropSellTaxBasisPoints ) { emit MetadropTaxBasisPointsChanged( oldMetadropBuyTaxBasisPoints, metadropBuyTaxBasisPoints, oldMetadropSellTaxBasisPoints, metadropSellTaxBasisPoints ); } emit ProjectTaxBasisPointsChanged( oldBuyTaxBasisPoints, newProjectBuyTaxBasisPoints_, oldSellTaxBasisPoints, newProjectSellTaxBasisPoints_ ); } /** * @dev function {setLimits} onlyOwner * * Change the limits on transactions and holdings * * @param newMaxTokensPerTransaction_ The new per txn limit * @param newMaxTokensPerWallet_ The new tokens per wallet limit */ function setLimits( uint256 newMaxTokensPerTransaction_, uint256 newMaxTokensPerWallet_ ) external onlyOwner { if (newMaxTokensPerWallet_ > type(uint120).max) { _revert(LimitTooHigh.selector); } if (newMaxTokensPerTransaction_ > type(uint120).max) { _revert(LimitTooHigh.selector); } uint256 oldMaxTokensPerTransaction = maxTokensPerTransaction; uint256 oldMaxTokensPerWallet = maxTokensPerWallet; // Limit can only be increased: if ( (oldMaxTokensPerTransaction == 0 && newMaxTokensPerTransaction_ != 0) || (oldMaxTokensPerWallet == 0 && newMaxTokensPerWallet_ != 0) ) { _revert(LimitsCanOnlyBeRaised.selector); } if ( ((newMaxTokensPerTransaction_ != 0) && newMaxTokensPerTransaction_ < oldMaxTokensPerTransaction) || ((newMaxTokensPerWallet_ != 0) && newMaxTokensPerWallet_ < oldMaxTokensPerWallet) ) { _revert(LimitsCanOnlyBeRaised.selector); } maxTokensPerTransaction = uint120(newMaxTokensPerTransaction_); maxTokensPerWallet = uint120(newMaxTokensPerWallet_); emit LimitsUpdated( oldMaxTokensPerTransaction, newMaxTokensPerTransaction_, oldMaxTokensPerWallet, newMaxTokensPerWallet_ ); } /** * @dev function {limitsEnforced} * * Return if limits are enforced on this contract * * @return bool : they are / aren't */ function limitsEnforced() public view returns (bool) { // Limits are not enforced if // this is renounced AND after then protection end date // OR prior to LP funding: // The second clause of 'fundedDate == 0' isn't strictly needed, since with a funded // date of 0 we would always expect the block.timestamp to be less than 0 plus // the botProtectionDurationInSeconds. But, to cover the miniscule chance of a user // selecting a truly enormous bot protection period, such that when added to 0 it // is more than the current block.timestamp, we have included this second clause. There // is no permanent gas overhead (the logic will be returning from the first clause after // the bot protection period has expired). During the bot protection period there is a minor // gas overhead from evaluating the fundedDate == 0 (which will be false), but this is minimal. if ( (owner() == address(0) && block.timestamp > fundedDate + botProtectionDurationInSeconds) || fundedDate == 0 ) { return false; } else { // LP has been funded AND we are within the protection period: return true; } } /** * @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 default value returned by this function, unless * it's 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 getMetadropBuyTaxBasisPoints * * Return the metadrop buy tax basis points given the timed expiry */ function getMetadropBuyTaxBasisPoints() public view returns (uint256) { // If we are outside the metadrop tax period this is ZERO if (block.timestamp > (fundedDate + (metadropTaxPeriodInDays * 1 days))) { return 0; } else { return metadropBuyTaxBasisPoints; } } /** * @dev getMetadropSellTaxBasisPoints * * Return the metadrop sell tax basis points given the timed expiry */ function getMetadropSellTaxBasisPoints() public view returns (uint256) { // If we are outside the metadrop tax period this is ZERO if (block.timestamp > (fundedDate + (metadropTaxPeriodInDays * 1 days))) { return 0; } else { return metadropSellTaxBasisPoints; } } /** * @dev totalBuyTaxBasisPoints * * Provide easy to view tax total: */ function totalBuyTaxBasisPoints() public view returns (uint256) { return projectBuyTaxBasisPoints + getMetadropBuyTaxBasisPoints(); } /** * @dev totalSellTaxBasisPoints * * Provide easy to view tax total: */ function totalSellTaxBasisPoints() public view returns (uint256) { return projectSellTaxBasisPoints + getMetadropSellTaxBasisPoints(); } /** * @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(IERC20) returns (bool) { address owner = _msgSender(); _transfer( owner, to, amount, (isLiquidityPool(owner) || isLiquidityPool(to)) ); 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, (isLiquidityPool(from) || isLiquidityPool(to))); 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, allowance(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 = allowance(owner, spender); if (currentAllowance < subtractedValue) { _revert(AllowanceDecreasedBelowZero.selector); } unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * 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, bool applyTax ) internal virtual { _beforeTokenTransfer(from, to, amount); // Perform pre-tax validation (e.g. amount doesn't exceed balance, max txn amount) uint256 fromBalance = _pretaxValidationAndLimits(from, to, amount); // Perform autoswap if eligible _autoSwap(from, to); // Process taxes uint256 amountMinusDeductions = _taxProcessing(applyTax, to, from, amount); // Process autoburn amountMinusDeductions = _autoburnProcessing( from, amount, amountMinusDeductions ); // Perform post-tax validation (e.g. total balance after post-tax amount applied) _posttaxValidationAndLimits(from, to, amountMinusDeductions); _balances[from] = fromBalance - amount; _balances[to] += amountMinusDeductions; emit Transfer(from, to, amountMinusDeductions); _afterTokenTransfer(from, to, amount); } /** * @dev function {_pretaxValidationAndLimits} * * Perform validation on pre-tax amounts * * @param from_ From address for the transaction * @param to_ To address for the transaction * @param amount_ Amount of the transaction */ function _pretaxValidationAndLimits( address from_, address to_, uint256 amount_ ) internal view returns (uint256 fromBalance_) { // This can't be a transfer to the liquidity pool before the funding date // UNLESS the from address is this contract. This ensures that the initial // LP funding transaction is from this contract using the supply of tokens // designated for the LP pool, and therefore the initial price in the pool // is being set as expected. // // This protects from, for example, tokens from a team minted supply being // paired with ETH and added to the pool, setting the initial price, BEFORE // the initial liquidity is added through this contract. if (to_ == uniswapV2Pair && from_ != address(this) && fundedDate == 0) { _revert(InitialLiquidityNotYetAdded.selector); } if (from_ == address(0)) { _revert(TransferFromZeroAddress.selector); } if (to_ == address(0)) { _revert(TransferToZeroAddress.selector); } fromBalance_ = _balances[from_]; if (fromBalance_ < amount_) { _revert(TransferAmountExceedsBalance.selector); } if ( limitsEnforced() && (maxTokensPerTransaction != 0) && ((isLiquidityPool(from_) && !isUnlimited(to_)) || (isLiquidityPool(to_) && !isUnlimited(from_))) ) { // Liquidity pools aren't always going to round cleanly. This can (and does) // mean that a limit of 5,000 tokens (for example) will trigger on a transfer // of 5,000 tokens, as the transfer is actually for 5,000.00000000000000213. // While 4,999 will work fine, it isn't hugely user friendly. So we buffer // the limit with rounding decimals, which in all cases are considerably less // than one whole token: uint256 roundedLimited; unchecked { roundedLimited = maxTokensPerTransaction + CONST_ROUND_DEC; } if (amount_ > roundedLimited) { _revert(MaxTokensPerTxnExceeded.selector); } } return (fromBalance_); } /** * @dev function {_posttaxValidationAndLimits} * * Perform validation on post-tax amounts * * @param to_ To address for the transaction * @param amount_ Amount of the transaction */ function _posttaxValidationAndLimits( address from_, address to_, uint256 amount_ ) internal view { if ( limitsEnforced() && (maxTokensPerWallet != 0) && !isUnlimited(to_) && // If this is a buy (from a liquidity pool), we apply if the to_ // address isn't noted as unlimited: (isLiquidityPool(from_) && !isUnlimited(to_)) ) { // Liquidity pools aren't always going to round cleanly. This can (and does) // mean that a limit of 5,000 tokens (for example) will trigger on a max holding // of 5,000 tokens, as the transfer to achieve that is actually for // 5,000.00000000000000213. While 4,999 will work fine, it isn't hugely user friendly. // So we buffer the limit with rounding decimals, which in all cases are considerably // less than one whole token: uint256 roundedLimited; unchecked { roundedLimited = maxTokensPerWallet + CONST_ROUND_DEC; } if ((amount_ + balanceOf(to_) > roundedLimited)) { _revert(MaxTokensPerWalletExceeded.selector); } } } /** * @dev function {_taxProcessing} * * Perform tax processing * * @param applyTax_ Do we apply tax to this transaction? * @param to_ The reciever of the token * @param from_ The sender of the token * @param sentAmount_ The amount being send * @return amountLessTax_ The amount that will be recieved, i.e. the send amount minus tax */ function _taxProcessing( bool applyTax_, address to_, address from_, uint256 sentAmount_ ) internal returns (uint256 amountLessTax_) { amountLessTax_ = sentAmount_; if (_tokenHasTax && applyTax_ && !_autoSwapInProgress) { uint256 tax; // on sell if (isLiquidityPool(to_) && totalSellTaxBasisPoints() > 0) { if (projectSellTaxBasisPoints > 0) { uint256 projectTax = ((sentAmount_ * projectSellTaxBasisPoints) / CONST_BP_DENOM); projectTaxPendingSwap += uint128(projectTax); tax += projectTax; } uint256 metadropSellTax = getMetadropSellTaxBasisPoints(); if (metadropSellTax > 0) { uint256 metadropTax = ((sentAmount_ * metadropSellTax) / CONST_BP_DENOM); metadropTaxPendingSwap += uint128(metadropTax); tax += metadropTax; } } // on buy else if (isLiquidityPool(from_) && totalBuyTaxBasisPoints() > 0) { if (projectBuyTaxBasisPoints > 0) { uint256 projectTax = ((sentAmount_ * projectBuyTaxBasisPoints) / CONST_BP_DENOM); projectTaxPendingSwap += uint128(projectTax); tax += projectTax; } uint256 metadropBuyTax = getMetadropBuyTaxBasisPoints(); if (metadropBuyTax > 0) { uint256 metadropTax = ((sentAmount_ * metadropBuyTax) / CONST_BP_DENOM); metadropTaxPendingSwap += uint128(metadropTax); tax += metadropTax; } } if (tax > 0) { _balances[address(this)] += tax; emit Transfer(from_, address(this), tax); amountLessTax_ -= tax; } } return (amountLessTax_); } /** * @dev function {_autoburnProcessing} * * Perform autoburn processing * * @param from_ The sender of the token * @param originalSentAmount_ The original amount being sent, before any deductions (if appropriate) * @param currentRecipientAmount_ The amount the recipient is currently due to receive * @return amountLessBurn_ The amount that will be recieved, i.e. the currentRecipientAmount_ * minus the burn applied here */ function _autoburnProcessing( address from_, uint256 originalSentAmount_, uint256 currentRecipientAmount_ ) internal returns (uint256 amountLessBurn_) { amountLessBurn_ = currentRecipientAmount_; // Perform autoBurn processing, if appropriate: if ( autoBurnDurationInBlocks != 0 && autoBurnBasisPoints != 0 && !_autoSwapInProgress && isLiquidityPool(from_) ) { uint256 blocksElapsed = block.number - fundedBlock; if (blocksElapsed < autoBurnDurationInBlocks) { // Get the blocks remaining in the autoburn period. The more blocks // remaining, the higher the proportion of the burn we apply: uint256 burnBlocksRemaining = autoBurnDurationInBlocks - blocksElapsed; // Calculate the linear burn basis point per remaining block. For example, if our // burn basis points = 1500 (15%) and we are burning for three blocks then this // will be 1500 / 3 = 500 (5%): uint256 linearBurnPerRemainingBlock = autoBurnBasisPoints / autoBurnDurationInBlocks; // Finally, determine the burn basis points for this block by multiplying the per remaining // block burn % by the number of blocks remaining. To follow our example, in the 0th // block since funding there are three blocks remaining in the burn period, therefore // 500 * 3 = 1500 (15%). Two blocks after funding we have one block remaining in the burn // period, and therefore are burning 500 * 1 = 500 (5%). Three blocks after funding we do not // reach this point in the logic, as the blocksElapsed is 3 and needs to be UNDER 3 to enter // this code. uint256 burnBasisPointsForThisBlock = burnBlocksRemaining * linearBurnPerRemainingBlock; // This is eligible for burn. Send the basis points amount of // the originalSentAmount_ to the zero address: uint256 burnAmount = ((originalSentAmount_ * burnBasisPointsForThisBlock) / CONST_BP_DENOM); _burn(from_, burnAmount); amountLessBurn_ -= burnAmount; } } return (amountLessBurn_); } /** * @dev totalTaxPendingSwap * * Return the total tax awaiting swap: */ function totalTaxPendingSwap() public view returns (uint256) { return projectTaxPendingSwap + metadropTaxPendingSwap; } /** * @dev function {_autoSwap} * * Automate the swap of accumulated tax fees to native token * * @param from_ The sender of the token * @param to_ The recipient of the token */ function _autoSwap(address from_, address to_) internal { if (_tokenHasTax) { uint256 totalTaxBalance = totalTaxPendingSwap(); uint256 swapBalance = totalTaxBalance; uint256 swapThresholdInTokens = (_totalSupply * swapThresholdBasisPoints) / CONST_BP_DENOM; if (_eligibleForSwap(from_, to_, swapBalance, swapThresholdInTokens)) { // Store that a swap back is in progress: _autoSwapInProgress = true; // Check if we need to reduce the amount of tokens for this swap: if ( swapBalance > swapThresholdInTokens * CONST_MAX_SWAP_THRESHOLD_MULTIPLE ) { swapBalance = swapThresholdInTokens * CONST_MAX_SWAP_THRESHOLD_MULTIPLE; } // Perform the auto swap to native token: _swapTaxForNative(swapBalance, totalTaxBalance); // Flag that the autoswap is complete: _autoSwapInProgress = false; } } } /** * @dev function {_eligibleForSwap} * * Is the current transfer eligible for autoswap * * @param from_ The sender of the token * @param to_ The recipient of the token * @param taxBalance_ The current accumulated tax balance * @param swapThresholdInTokens_ The swap threshold as a token amount */ function _eligibleForSwap( address from_, address to_, uint256 taxBalance_, uint256 swapThresholdInTokens_ ) internal view returns (bool) { return (taxBalance_ >= swapThresholdInTokens_ && !_autoSwapInProgress && !isLiquidityPool(from_) && from_ != address(_uniswapRouter) && to_ != address(_uniswapRouter)); } /** * @dev function {_swapTaxForNative} * * Swap tokens taken as tax for native token * * @param swapBalance_ The current accumulated tax balance to swap * @param totalTaxBalance_ The current accumulated total tax balance */ function _swapTaxForNative( uint256 swapBalance_, uint256 totalTaxBalance_ ) internal { uint256 preSwapBalance = address(this).balance; address[] memory path = new address[](2); path[0] = address(this); path[1] = _uniswapRouter.WETH(); // Wrap external calls in try / catch to handle errors try _uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens( swapBalance_, 0, path, address(this), block.timestamp + 600 ) { uint256 postSwapBalance = address(this).balance; uint256 balanceToDistribute = postSwapBalance - preSwapBalance; uint256 projectBalanceToDistribute = (balanceToDistribute * projectTaxPendingSwap) / totalTaxBalance_; uint256 metadropBalanceToDistribute = (balanceToDistribute * metadropTaxPendingSwap) / totalTaxBalance_; // We will not have swapped all tax tokens IF the amount was greater than the max auto swap. // We therefore cannot just set the pending swap counters to 0. Instead, in this scenario, // we must reduce them in proportion to the swap amount vs the remaining balance + swap // amount. // // For example: // * swap Balance is 250 // * contract balance is 385. // * projectTaxPendingSwap is 300 // * metadropTaxPendingSwap is 85. // // The new total for the projectTaxPendingSwap is: // = 300 - ((300 * 250) / 385) // = 300 - 194 // = 106 // The new total for the metadropTaxPendingSwap is: // = 85 - ((85 * 250) / 385) // = 85 - 55 // = 30 // if (swapBalance_ < totalTaxBalance_) { // Calculate the project tax spending swap reduction amount: uint256 projectTaxPendingSwapReduction = (projectTaxPendingSwap * swapBalance_) / totalTaxBalance_; projectTaxPendingSwap -= uint128(projectTaxPendingSwapReduction); // The metadrop tax pending swap reduction is therefore the total swap amount minus the // project tax spending swap reduction: metadropTaxPendingSwap -= uint128( swapBalance_ - projectTaxPendingSwapReduction ); } else { (projectTaxPendingSwap, metadropTaxPendingSwap) = (0, 0); } // Distribute to treasuries: bool success; address weth; uint256 gas; if (projectBalanceToDistribute > 0) { // If no gas limit was provided or provided gas limit greater than gas left, just use the remaining gas. gas = (CONST_CALL_GAS_LIMIT == 0 || CONST_CALL_GAS_LIMIT > gasleft()) ? gasleft() : CONST_CALL_GAS_LIMIT; // We limit the gas passed so that a called address cannot cause a block out of gas error: (success, ) = projectTaxRecipient.call{ value: projectBalanceToDistribute, gas: gas }(""); // If the ETH transfer fails, wrap the ETH and send it as WETH. We do this so that a called // address cannot cause this transfer to fail, either intentionally or by mistake: if (!success) { if (weth == address(0)) { weth = _uniswapRouter.WETH(); } try IWETH(weth).deposit{value: projectBalanceToDistribute}() { try IERC20(address(weth)).transfer( projectTaxRecipient, projectBalanceToDistribute ) {} catch { // Dont allow a failed external call (in this case to WETH) to stop a transfer. // Emit that this has occured and continue. emit ExternalCallError(1); } } catch { // Dont allow a failed external call (in this case to WETH) to stop a transfer. // Emit that this has occured and continue. emit ExternalCallError(2); } } } if (metadropBalanceToDistribute > 0) { // If no gas limit was provided or provided gas limit greater than gas left, just use the remaining gas. gas = (CONST_CALL_GAS_LIMIT == 0 || CONST_CALL_GAS_LIMIT > gasleft()) ? gasleft() : CONST_CALL_GAS_LIMIT; (success, ) = metadropTaxRecipient.call{ value: metadropBalanceToDistribute, gas: gas }(""); // If the ETH transfer fails, wrap the ETH and send it as WETH. We do this so that a called // address cannot cause this transfer to fail, either intentionally or by mistake: if (!success) { if (weth == address(0)) { weth = _uniswapRouter.WETH(); } try IWETH(weth).deposit{value: metadropBalanceToDistribute}() { try IERC20(address(weth)).transfer( metadropTaxRecipient, metadropBalanceToDistribute ) {} catch { // Dont allow a failed external call (in this case to WETH) to stop a transfer. // Emit that this has occured and continue. emit ExternalCallError(3); } } catch { // Dont allow a failed external call (in this case to WETH) to stop a transfer. // Emit that this has occured and continue. emit ExternalCallError(4); } } } } catch { // Dont allow a failed external call (in this case to uniswap) to stop a transfer. // Emit that this has occured and continue. emit ExternalCallError(5); } } /** * @dev distributeTaxTokens * * Allows the distribution of tax tokens to the designated recipient(s) * * As part of standard processing the tax token balance being above the threshold * will trigger an autoswap to ETH and distribution of this ETH to the designated * recipients. This is automatic and there is no need for user involvement. * * As part of this swap there are a number of calculations performed, particularly * if the tax balance is above CONST_MAX_SWAP_THRESHOLD_MULTIPLE. * * Testing indicates that these calculations are safe. But given the data / code * interactions it remains possible that some edge case set of scenarios may cause * an issue with these calculations. * * This method is therefore provided as a 'fallback' option to safely distribute * accumulated taxes from the contract, with a direct transfer of the ERC20 tokens * themselves. */ function distributeTaxTokens() external notDuringAutoswap { if (projectTaxPendingSwap > 0) { uint256 projectDistribution = projectTaxPendingSwap; projectTaxPendingSwap = 0; _transfer(address(this), projectTaxRecipient, projectDistribution, false); } if (metadropTaxPendingSwap > 0) { uint256 metadropDistribution = metadropTaxPendingSwap; metadropTaxPendingSwap = 0; _transfer( address(this), metadropTaxRecipient, metadropDistribution, false ); } } /** * @dev function {rescueETH} * * A withdraw function to allow ETH to be rescued. * * This contract should never hold ETH. The only envisaged scenario where * it might hold ETH is a failed autoswap where the uniswap swap has completed, * the recipient of ETH reverts, the contract then wraps to WETH and the * wrap to WETH fails. * * This feels unlikely. But, for safety, we include this method. * * @param amount_ The amount to withdraw */ function rescueETH(uint256 amount_) external notDuringAutoswap { (bool success, ) = projectTaxRecipient.call{value: amount_}(""); if (!success) { _revert(TransferFailed.selector); } } /** * @dev function {rescueERC20} * * A withdraw function to allow ERC20s (except address(this)) to be rescued. * * This contract should never hold ERC20s other than tax tokens. The only envisaged * scenario where it might hold an ERC20 is a failed autoswap where the uniswap swap * has completed, the recipient of ETH reverts, the contract then wraps to WETH, the * wrap to WETH succeeds, BUT then the transfer of WETH fails. * * This feels even less likely than the scenario where ETH is held on the contract. * But, for safety, we include this method. * * @param token_ The ERC20 contract * @param amount_ The amount to withdraw */ function rescueERC20( address token_, uint256 amount_ ) external notDuringAutoswap { if (token_ == address(this)) { _revert(CannotWithdrawThisToken.selector); } IERC20(token_).safeTransfer(projectTaxRecipient, amount_); } /** * @dev function {rescueExcessToken} * * A withdraw function to allow ERC20s from this address that are above * the accrued tax balance to be rescued. */ function rescueExcessToken(uint256 amount_) external notDuringAutoswap { uint256 excessToken = balanceOf(address(this)) - totalTaxPendingSwap(); if (amount_ > excessToken) { _revert(AmountExceedsAvailable.selector); } IERC20(address(this)).safeTransfer(projectTaxRecipient, 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 { if (account == address(0)) { _revert(MintToZeroAddress.selector); } _beforeTokenTransfer(address(0), account, amount); _totalSupply += uint120(amount); unchecked { // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above. _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 { if (account == address(0)) { _revert(BurnFromTheZeroAddress.selector); } _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; if (accountBalance < amount) { _revert(BurnExceedsBalance.selector); } unchecked { _balances[account] = accountBalance - amount; // Overflow not possible: amount <= accountBalance <= totalSupply. _totalSupply -= uint120(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 { if (owner == address(0)) { _revert(ApproveFromTheZeroAddress.selector); } if (spender == address(0)) { _revert(ApproveToTheZeroAddress.selector); } _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * 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) { if (currentAllowance < amount) { _revert(InsufficientAllowance.selector); } unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Destroys a `value` amount of tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 value) public virtual { _burn(_msgSender(), value); } /** * @dev Destroys a `value` amount of 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 * `value`. */ function burnFrom(address account, uint256 value) public virtual { _spendAllowance(account, _msgSender(), value); _burn(account, value); } /** * @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 {} receive() external payable {} } // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ // @@ @@ // @@ Metadrop has no affiliation with and does not endorse this token or its creators in any @@ // @@ way, unless otherwise stated. For all terms and conditions associated with tokens launched @@ // @@ using Metadrop software, refer to the terms published at metadrop[dot]com/legal. @@ // @@ @@ // @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Contract Security Audit
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : integrationAddresses_ (address[5]): 0x13D8211a4415592817e41C8110f88B5751288405,0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D,0x663A5C229c09b049E36dCc11a9B0d4a8Eb9db214,0x8cDD488363dE72635b55BB263cc4C29041e6aa1a,0x0000000000000000000000000000000000000000
Arg [1] : baseParams_ (bytes): 0x000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c0000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007576f6b65475054000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007574f4b4547505400000000000000000000000000000000000000000000000000
Arg [2] : supplyParams_ (bytes): 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
Arg [3] : taxParams_ (bytes): 0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001e000000000000000000000000de3ff2a50bd1ba1bd6a608ea0138946dddf595bc000000000000000000000000de3ff2a50bd1ba1bd6a608ea0138946dddf595bc0000000000000000000000000000000000000000000000000000000000000032000000000000000000000000000000000000000000000000000000000000003200000000000000000000000000000000000000000000000000000000000003e800000000000000000000000000000000000000000000000000000000000003e800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Arg [4] : poolParams_ (bytes): 0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
-----Encoded View---------------
53 Constructor Arguments found :
Arg [0] : 00000000000000000000000013d8211a4415592817e41c8110f88b5751288405
Arg [1] : 0000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488d
Arg [2] : 000000000000000000000000663a5c229c09b049e36dcc11a9b0d4a8eb9db214
Arg [3] : 0000000000000000000000008cdd488363de72635b55bb263cc4c29041e6aa1a
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000240
Arg [7] : 00000000000000000000000000000000000000000000000000000000000003a0
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000580
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [11] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [15] : 576f6b6547505400000000000000000000000000000000000000000000000000
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [17] : 574f4b4547505400000000000000000000000000000000000000000000000000
Arg [18] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [19] : 00000000000000000000000000000000000000000000000000000000000f4240
Arg [20] : 00000000000000000000000000000000000000000000000000000000000e7ef0
Arg [21] : 000000000000000000000000000000000000000000000000000000000000c350
Arg [22] : 0000000000000000000000000000000000000000000000000000000000007530
Arg [23] : 0000000000000000000000000000000000000000000000000000000000007530
Arg [24] : 000000000000000000000000000000000000000000000000000000000000001f
Arg [25] : 00000000000000000000000000000000000000000000000000000000bbf81e00
Arg [26] : 00000000000000000000000073fc3c1870d1189608a1b1c5558a5628424cfc37
Arg [27] : 00000000000000000000000013d8211a4415592817e41c8110f88b5751288405
Arg [28] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [29] : 00000000000000000000000000000000000000000000000000000000000001c0
Arg [30] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [31] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [32] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [33] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [34] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [35] : 000000000000000000000000000000000000000000000000000000000000001e
Arg [36] : 000000000000000000000000de3ff2a50bd1ba1bd6a608ea0138946dddf595bc
Arg [37] : 000000000000000000000000de3ff2a50bd1ba1bd6a608ea0138946dddf595bc
Arg [38] : 0000000000000000000000000000000000000000000000000000000000000032
Arg [39] : 0000000000000000000000000000000000000000000000000000000000000032
Arg [40] : 00000000000000000000000000000000000000000000000000000000000003e8
Arg [41] : 00000000000000000000000000000000000000000000000000000000000003e8
Arg [42] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [43] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [44] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [45] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [46] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [47] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [48] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [49] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [50] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [51] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [52] : 0000000000000000000000000000000000000000000000000000000000000000
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.