ERC-20
DeFi
Overview
Max Total Supply
1,000,000,000 MAGNET
Holders
907 (0.00%)
Market
Price
$0.00 @ 0.000000 ETH
Onchain Market Cap
$20,680.00
Circulating Supply Market Cap
$0.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
383,316.823335636314033156 MAGNETValue
$7.93 ( ~0.00312941410956601 Eth) [0.0383%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
YieldMagnetToken
Compiler Version
v0.8.22+commit.4fc1097e
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.20; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol"; import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol"; /// @title This is official MAGNET Token contract ERC20 used in the Yield Magnet platform /// @author Yield Magnet Team struct StakingContract { address contractAddress; uint8 percentage; } contract YieldMagnetToken is ERC20, Ownable { using SafeERC20 for IERC20; /*////////////////////////////////////////////////////////////// TAX VARIABLES //////////////////////////////////////////////////////////////*/ struct WalletState { bool isMarketPair; bool isExemptFromTax; } // Saves gas! mapping(address => WalletState) public walletStates; // Set to 10/10 when trading is open. SetTaxes can only set it // up to 10/10. uint8 public buyTax = 0; uint8 public sellTax = 0; // Must always add up to 100. uint8 public platformPercentage = 60; uint8 public stakerPercentage = 20; uint8 public lpPercentage = 20; // When set is true, tax will no longer be change-able. bool private _isTaxRenounced = false; bool private _isTaxEnabled = true; /*////////////////////////////////////////////////////////////// CONTRACT SWAP //////////////////////////////////////////////////////////////*/ // Once switched on, can never be switched off. bool public isTradingOpen = false; bool private _inSwap = false; uint256 public taxDistributionThreshold = 5_000_000 * 10 ** 18; /*////////////////////////////////////////////////////////////// UNISWAP //////////////////////////////////////////////////////////////*/ IUniswapV2Router02 public uniswapV2Router; /*////////////////////////////////////////////////////////////// TAX RECIPIENTS //////////////////////////////////////////////////////////////*/ // Platform cut will be sent to this address. // Defaults to contract creator. address public taxAddress; // LP tokens will be sent to this address. // Defaults to contract creator. address public lpAddress; // Staking cut will be distributed to these contracts. // The percentages must always add up to 100. StakingContract[] private _stakingContracts; /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event TaxDistributed( uint256 platformCut, uint256 stakersCut, uint256 liquidityCut ); event LiquidityAdded(uint256 tokenAmount, uint256 ethAmount); event PlatformTaxDistributed(uint256 amount); event UniswapRouterUpdated(address newRouter); event ExcludedFromFeesUpdated(address wallet, bool isExcluded); event MarketPairUpdated(address pair, bool isMarketPair); event StakingContractsUpdated( address[] stakingContracts, uint8[] percentages ); event TaxAddressUpdated(address newTaxAddress); event LpAddressUpdated(address newLpAddress); event TradingOpen(); event TaxRenounced(); event TaxStatusUpdated(bool isTaxEnabled); event TaxesUpdated(uint8 buyTax, uint8 sellTax); event DistributionThresholdUpdated(uint256 newThreshold); event DistributionPercentagesUpdated( uint8 platformPercentage, uint8 stakerPercentage, uint8 lpPercentage ); /*////////////////////////////////////////////////////////////// MAIN LOGIC //////////////////////////////////////////////////////////////*/ constructor() ERC20("Yield Magnet", "MAGNET") Ownable(msg.sender) { super._update(address(0), msg.sender, (1_000_000_000 * 10 ** 18)); address uniswapV2Router02Address = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02( uniswapV2Router02Address ); // Create the pair and mark it as a market pair to enable taxes. address uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()) .createPair(address(this), _uniswapV2Router.WETH()); uniswapV2Router = _uniswapV2Router; _approve(address(this), uniswapV2Router02Address, type(uint256).max); setMarketPair(uniswapV2Pair, true); taxAddress = msg.sender; lpAddress = msg.sender; // Exclude owner, this contract and Uniswap router from fees. walletStates[msg.sender] = WalletState({ isMarketPair: false, isExemptFromTax: true }); emit ExcludedFromFeesUpdated(msg.sender, true); walletStates[address(this)] = WalletState({ isMarketPair: false, isExemptFromTax: true }); emit ExcludedFromFeesUpdated(address(this), true); walletStates[uniswapV2Router02Address] = WalletState({ isMarketPair: false, isExemptFromTax: true }); emit ExcludedFromFeesUpdated(uniswapV2Router02Address, true); } receive() external payable {} /// @notice Returns if an address is excluded from tax. function isTaxExempt(address account_) external view returns (bool) { return walletStates[account_].isExemptFromTax; } /// @notice Returns if the tax is enabled or not. Tax only exists on market pairs. function isTaxEnabled() external view returns (bool) { return _isTaxEnabled; } /// @notice Returns if tax is renounced, meaning that the taxes cannot be changed. function isTaxRenounced() external view returns (bool) { return _isTaxRenounced; } /// @notice _update function overrides the _update function from the perent contract and contains logic for tax and tax distribution /// @dev this override function will be called from the top level transfer and transferFrom function whenever user initates transfer or buy and sell happens /// @dev this function breaks _mint. Use super._update instead. /// @param from address from the amount will be transfered /// @param to address to where the amount will be transfered /// @param amount number of tokens to transfer function _update( address from, address to, uint256 amount ) internal override { // Parent ERC20 already checks that from/to are not zero address. uint256 fromBalance = balanceOf(from); require( fromBalance >= amount, "ERC20: transfer amount exceeds balance" ); WalletState memory fromState = walletStates[from]; WalletState memory toState = walletStates[to]; bool isTaxExempt_ = (fromState.isExemptFromTax || toState.isExemptFromTax); uint256 taxAmount; if(fromState.isMarketPair || toState.isMarketPair) { require(isTradingOpen || msg.sender == owner() || tx.origin == owner(), "Trading not open yet"); } if (fromState.isMarketPair && isTaxExempt_ == false && _isTaxEnabled) { taxAmount = (amount * buyTax) / 100; } else if ( toState.isMarketPair && isTaxExempt_ == false && _isTaxEnabled ) { taxAmount = (amount * sellTax) / 100; } else { taxAmount = 0; } if ( balanceOf(address(this)) > taxDistributionThreshold && _inSwap == false && fromState.isMarketPair == false && // Don't swap on buys. toState.isMarketPair == true // Only swap on sells. ) { try this.distributeTax() {} catch(bytes memory) {} } if (taxAmount != 0 && _inSwap == false) { super._update(from, to, amount - taxAmount); super._update(from, address(this), taxAmount); } else { super._update(from, to, amount); } } modifier lockTheSwap { _inSwap = true; _; _inSwap = false; } /// @notice Distributes the collected tax to the platform, stakers and liquidity. function distributeTax() external lockTheSwap { require(msg.sender == address(this) || msg.sender == owner(), "owner/contract only"); uint256 contractBalance = balanceOf(address(this)); uint256 platformCut = (contractBalance * platformPercentage) / 100; uint256 stakerCut = (contractBalance * stakerPercentage) / 100; uint256 lpCut = (contractBalance * lpPercentage) / 100; require( (platformCut + stakerCut + lpCut) <= balanceOf(address(this)), "YieldMagnet: Can't distribute the funds" ); _distributeStakersCut(stakerCut); _handleLiquidityAndPlatformCut(platformCut, lpCut); emit TaxDistributed(platformCut, stakerCut, lpCut); } /// @notice Distributes the stakers cut to the staking contracts. /// @dev All staking contract's percentages must add up to exactly 100. function _distributeStakersCut(uint256 stakersCut_) private { for (uint256 i = 0; i < _stakingContracts.length; i++) { StakingContract memory sc = _stakingContracts[i]; uint256 stakerContractCut = (sc.percentage * stakersCut_) / 100; super._update(address(this), sc.contractAddress, stakerContractCut); } } /// @notice Distributes liquidity and platform cut. Swaps both to ETH, adds liquidity, and sends the remaining ETH to the tax address. /// @param platformCut amount of tokens to swap and send as ETH to taxAddress. /// @param lpCut half tokens are swapped, half added to liquidity. function _handleLiquidityAndPlatformCut(uint256 platformCut, uint256 lpCut) private { uint256 initBal = address(this).balance; _swapTokensForEth(lpCut/2 - 1 + platformCut); if(lpCut > 0) { uint256 receiveBalance = address(this).balance - initBal; uint256 ethForLiq = receiveBalance * lpCut / (lpCut + platformCut); _addLiquidity(lpCut/2, ethForLiq); emit LiquidityAdded(lpCut/2, ethForLiq); } // Send any remaining ETH to the tax address. This will equal to the platform cut. uint256 amount = address(this).balance; (bool success,) = taxAddress.call{value: amount}(""); require(success, "YieldMagnet: Failed to send ETH to tax address"); emit PlatformTaxDistributed(amount); } /// @notice Swaps the token amount to ETH using the Uniswap V2 router. function _swapTokensForEth(uint256 tokenAmount_) private { address[] memory path = new address[](2); path[0] = address(this); path[1] = uniswapV2Router.WETH(); require( tokenAmount_ > 0, "YieldMagnet: Token amount less then 0 for token swap" ); uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount_, 0, path, address(this), block.timestamp ); } /// @notice Adds liquidity to the Uniswap V2 pair. LP tokens are sent to the lpAddress. /// @dev Approvals happen when setting the router address. function _addLiquidity(uint256 tokenAmount_, uint256 ethAmount_) private { uniswapV2Router.addLiquidityETH{value: ethAmount_}( address(this), tokenAmount_, 0, 0, lpAddress, block.timestamp ); } /*////////////////////////////////////////////////////////////// STAKING CONTRACTS //////////////////////////////////////////////////////////////*/ /// @notice Retrieves the Staking contract address and their percentages. function getStakingContracts() public view returns (StakingContract[] memory) { return _stakingContracts; } /// @notice Sets the staking contracts and their respective percentages. Percentages must add up to 100. /// @dev Deletes any previous _stakingContracts. /// @param stakingContracts_ The array of Staking contract addresses /// @param percentages_ The array of Staking contract distribution perccentages function updateStakingContracts( address[] memory stakingContracts_, uint8[] memory percentages_ ) external onlyOwner { require( stakingContracts_.length == percentages_.length, "YieldMagnet: No of address and No of Percentages doesn't match!" ); require(stakingContracts_.length <= 10, "YieldMagnet: Max 10 staking contracts allowed!"); // Clear the existing staking contracts. delete _stakingContracts; uint8 totalPercent = 0; for (uint256 i = 0; i < stakingContracts_.length; i++) { require( percentages_[i] >= 0 && percentages_[i] <= 100, "YieldMagnet: percentage should be between 0 to 100!" ); require( stakingContracts_[i] != address(0), "YieldMagnet: Staking contract may not be 0x0" ); _stakingContracts.push( StakingContract(stakingContracts_[i], percentages_[i]) ); totalPercent += percentages_[i]; } require( totalPercent == 100, "YieldMagnet: Total Percentage should be 100." ); emit StakingContractsUpdated(stakingContracts_, percentages_); } /*////////////////////////////////////////////////////////////// OWNER FUNCTIONS //////////////////////////////////////////////////////////////*/ /// @notice Opens the trading, enabling taxes. Can only be called once. function openTrading() external onlyOwner { require(isTradingOpen == false, "Trading already open"); isTradingOpen = true; buyTax = 10; sellTax = 10; emit TradingOpen(); } /// @notice Renounces the tax, meaning that it can never be changed again. function renounceTax() public onlyOwner { _isTaxRenounced = true; emit TaxRenounced(); } /// @notice Sets the Uniswap router address to use for swapping taxes and adding liquidity. function updateUniswapRouter(address newRouter) external onlyOwner { address oldAddress = address(uniswapV2Router); require(oldAddress != newRouter, "Address already set"); _approve(address(this), oldAddress, 0); _approve(address(this), newRouter, type(uint256).max); uniswapV2Router = IUniswapV2Router02(newRouter); emit UniswapRouterUpdated(newRouter); } /// @notice Sets an address's tax exempt status. function setTaxExempt(address account, bool isExempt) external onlyOwner { require(account != address(this), "Can't change contract"); WalletState memory state = walletStates[account]; state.isExemptFromTax = isExempt; walletStates[account] = state; emit ExcludedFromFeesUpdated(account, isExempt); } /// @notice Toggles if tax is enabled or not. function setTaxEnabled(bool taxStatus_) external onlyOwner { _isTaxEnabled = taxStatus_; emit TaxStatusUpdated(taxStatus_); } /// @notice Set the receiver of platform taxes. function setTaxAddress(address newTaxAddress_) external onlyOwner { taxAddress = newTaxAddress_; emit TaxAddressUpdated(newTaxAddress_); } /// @notice Sets the address that will receive LP tokens from liquidity adds. function setLpAddress(address newLpAddress_) external onlyOwner { lpAddress = newLpAddress_; emit LpAddressUpdated(newLpAddress_); } /// @notice Sets the tax percentages for buy and sell. Can only be called before tax is renounced. /// @dev it sets buyTax to the newBuyTax_ and sellTax to the newSellTax_ /// @param newBuyTax_ new buy tax. Cannot exceed 10. /// @param newSellTax_ new sell tax. Cannot exceed 10. function setTaxAmount( uint8 newBuyTax_, uint8 newSellTax_ ) external onlyOwner { require(_isTaxRenounced == false, "YieldMagnet: Tax is renounced!"); require( newBuyTax_ <= 10 && newSellTax_ <= 10, "YieldMagnet: Tax Should be less then 10!" ); buyTax = newBuyTax_; sellTax = newSellTax_; emit TaxesUpdated(newBuyTax_, newSellTax_); } /// @notice setMarketPair updates the market pair status. Taxes apply from/to market pairs. function setMarketPair(address account, bool value) public onlyOwner { require(account != address(this), "cant change contract"); WalletState memory state = walletStates[account]; state.isMarketPair = value; walletStates[account] = state; emit MarketPairUpdated(account, value); } /// @notice Updates the tax distribution percentage between platform, stakers and liquidity. /// @dev sum of all three percentage must be == 100 for proper distribution. /// @param platformPercentage_ percentage for the platform /// @param stakerPercentage_ percentage for the stakers /// @param lpPercentage_ percentage for the liquidity function setDistributionPercentage( uint8 platformPercentage_, uint8 stakerPercentage_, uint8 lpPercentage_ ) external onlyOwner { require( (platformPercentage_ + stakerPercentage_ + lpPercentage_) == 100, "YieldMagnet: Percentage should sum to 100!" ); platformPercentage = platformPercentage_; stakerPercentage = stakerPercentage_; lpPercentage = lpPercentage_; emit DistributionPercentagesUpdated( platformPercentage_, stakerPercentage_, lpPercentage_ ); } /// @notice Changes the balance threshold for when tax is distributed. /// @dev it sets taxDistributionThreshold to newTaxDistributionThreshold_ also multiply it with the decimals /// @param newTaxDistributionThreshold_ number of whole tokens for the threshold. Decimals are added automatically. function changeTaxDistributionThreshold( uint256 newTaxDistributionThreshold_ ) external onlyOwner { require( newTaxDistributionThreshold_ > 0, "YieldMagnet: Threshold can't be 0" ); taxDistributionThreshold = newTaxDistributionThreshold_ * 10 ** 18; emit DistributionThresholdUpdated(newTaxDistributionThreshold_); } /// @notice Rescue any tokens that are stuck in the contract. function rescueStuckTokens( address tokenAddress_, uint256 amount_ ) external onlyOwner { require(amount_ > 0, "YieldMagnet: amount can't be 0"); IERC20 token = IERC20(tokenAddress_); token.safeTransfer(msg.sender, amount_); } /// @notice Rescues any ETH that are stuck in the contract. function rescueStuckETH(uint256 amount_) external onlyOwner { require(amount_ > 0, "YieldMagnet: amount can't be 0"); (bool success,) = msg.sender.call{value: amount_}(""); require(success, "failed to send eth"); } }
pragma solidity >=0.5.0; interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; }
pragma solidity >=0.6.2; import './IUniswapV2Router01.sol'; interface IUniswapV2Router02 is IUniswapV2Router01 { function removeLiquidityETHSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountETH); function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountETH); function swapExactTokensForTokensSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * The initial owner is set to the address provided by the deployer. This can * later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @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 OwnableUnauthorizedAccount(_msgSender()); } } /** * @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 OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Burnable.sol) pragma solidity ^0.8.20; import {ERC20} from "../ERC20.sol"; import {Context} from "../../../utils/Context.sol"; /** * @dev Extension of {ERC20} that allows token holders to destroy both their own * tokens and those that they have an allowance for, in a way that can be * recognized off-chain (via event analysis). */ abstract contract ERC20Burnable is Context, ERC20 { /** * @dev Destroys 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); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; import {IERC20Permit} from "../extensions/IERC20Permit.sol"; import {Address} from "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; /** * @dev An operation with an ERC20 token failed. */ error SafeERC20FailedOperation(address token); /** * @dev Indicates a failed `decreaseAllowance` request. */ error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease); /** * @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 `requestedDecrease`. If `token` returns no * value, non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal { unchecked { uint256 currentAllowance = token.allowance(address(this), spender); if (currentAllowance < requestedDecrease) { revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease); } forceApprove(token, spender, currentAllowance - requestedDecrease); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ 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 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); if (returndata.length != 0 && !abi.decode(returndata, (bool))) { revert SafeERC20FailedOperation(address(token)); } } /** * @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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "./IERC20.sol"; import {IERC20Metadata} from "./extensions/IERC20Metadata.sol"; import {Context} from "../../utils/Context.sol"; import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * The default value of {decimals} is 18. To change this, you should override * this function so it returns a different value. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. */ abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors { mapping(address account => uint256) private _balances; mapping(address account => mapping(address spender => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the 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 returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual 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 `value`. */ function transfer(address to, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _transfer(owner, to, value); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `value` 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 value) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, value); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * 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 `value`. * - the caller must have allowance for ``from``'s tokens of at least * `value`. */ function transferFrom(address from, address to, uint256 value) public virtual returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, value); _transfer(from, to, value); return true; } /** * @dev Moves a `value` 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. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _transfer(address from, address to, uint256 value) internal { if (from == address(0)) { revert ERC20InvalidSender(address(0)); } if (to == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(from, to, value); } /** * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from` * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding * this function. * * Emits a {Transfer} event. */ function _update(address from, address to, uint256 value) internal virtual { if (from == address(0)) { // Overflow check required: The rest of the code assumes that totalSupply never overflows _totalSupply += value; } else { uint256 fromBalance = _balances[from]; if (fromBalance < value) { revert ERC20InsufficientBalance(from, fromBalance, value); } unchecked { // Overflow not possible: value <= fromBalance <= totalSupply. _balances[from] = fromBalance - value; } } if (to == address(0)) { unchecked { // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply. _totalSupply -= value; } } else { unchecked { // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256. _balances[to] += value; } } emit Transfer(from, to, value); } /** * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0). * Relies on the `_update` mechanism * * Emits a {Transfer} event with `from` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _mint(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(address(0), account, value); } /** * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply. * Relies on the `_update` mechanism. * * Emits a {Transfer} event with `to` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead */ function _burn(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidSender(address(0)); } _update(account, address(0), value); } /** * @dev Sets `value` 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. * * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument. */ function _approve(address owner, address spender, uint256 value) internal { _approve(owner, spender, value, true); } /** * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event. * * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any * `Approval` event during `transferFrom` operations. * * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to * true using the following override: * ``` * function _approve(address owner, address spender, uint256 value, bool) internal virtual override { * super._approve(owner, spender, value, true); * } * ``` * * Requirements are the same as {_approve}. */ function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual { if (owner == address(0)) { revert ERC20InvalidApprover(address(0)); } if (spender == address(0)) { revert ERC20InvalidSpender(address(0)); } _allowances[owner][spender] = value; if (emitEvent) { emit Approval(owner, spender, value); } } /** * @dev Updates `owner` s allowance for `spender` based on spent `value`. * * Does not update the allowance value in case of infinite allowance. * Revert if not enough allowance is available. * * Does not emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 value) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { if (currentAllowance < value) { revert ERC20InsufficientAllowance(spender, currentAllowance, value); } unchecked { _approve(owner, spender, currentAllowance - value, false); } } } }
pragma solidity >=0.6.2; interface IUniswapV2Router01 { function factory() external pure returns (address); function WETH() external pure returns (address); function addLiquidity( address tokenA, address tokenB, uint amountADesired, uint amountBDesired, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB, uint liquidity); function addLiquidityETH( address token, uint amountTokenDesired, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external payable returns (uint amountToken, uint amountETH, uint liquidity); function removeLiquidity( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline ) external returns (uint amountA, uint amountB); function removeLiquidityETH( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline ) external returns (uint amountToken, uint amountETH); function removeLiquidityWithPermit( address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountA, uint amountB); function removeLiquidityETHWithPermit( address token, uint liquidity, uint amountTokenMin, uint amountETHMin, address to, uint deadline, bool approveMax, uint8 v, bytes32 r, bytes32 s ) external returns (uint amountToken, uint amountETH); function swapExactTokensForTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapTokensForExactTokens( uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline ) external returns (uint[] memory amounts); function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external returns (uint[] memory amounts); function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable returns (uint[] memory amounts); function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB); function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut); function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn); function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts); function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @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 or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * 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. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @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`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) 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 FailedInnerCall(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.20; /** * @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. * * ==== Security Considerations * * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be * considered as an intention to spend the allowance in any specific way. The second is that because permits have * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be * generally recommended is: * * ```solidity * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public { * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {} * doThing(..., value); * } * * function doThing(..., uint256 value) public { * token.safeTransferFrom(msg.sender, address(this), value); * ... * } * ``` * * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also * {SafeERC20-safeTransferFrom}). * * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so * contracts should have entry points that don't rely on permit. */ 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]. * * CAUTION: See Security Considerations above. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @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 value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` 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 value) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol) pragma solidity ^0.8.20; /** * @dev Standard ERC20 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens. */ interface IERC20Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC20InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC20InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers. * @param spender Address that may be allowed to operate on tokens without being their owner. * @param allowance Amount of tokens a `spender` is allowed to operate with. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC20InvalidApprover(address approver); /** * @dev Indicates a failure with the `spender` to be approved. Used in approvals. * @param spender Address that may be allowed to operate on tokens without being their owner. */ error ERC20InvalidSpender(address spender); } /** * @dev Standard ERC721 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens. */ interface IERC721Errors { /** * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. * Used in balance queries. * @param owner Address of the current owner of a token. */ error ERC721InvalidOwner(address owner); /** * @dev Indicates a `tokenId` whose `owner` is the zero address. * @param tokenId Identifier number of a token. */ error ERC721NonexistentToken(uint256 tokenId); /** * @dev Indicates an error related to the ownership over a particular token. Used in transfers. * @param sender Address whose tokens are being transferred. * @param tokenId Identifier number of a token. * @param owner Address of the current owner of a token. */ error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC721InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC721InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param tokenId Identifier number of a token. */ error ERC721InsufficientApproval(address operator, uint256 tokenId); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC721InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC721InvalidOperator(address operator); } /** * @dev Standard ERC1155 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens. */ interface IERC1155Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. * @param tokenId Identifier number of a token. */ error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC1155InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC1155InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param owner Address of the current owner of a token. */ error ERC1155MissingApprovalForAll(address operator, address owner); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC1155InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC1155InvalidOperator(address operator); /** * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation. * Used in batch transfers. * @param idsLength Length of the array of token identifiers * @param valuesLength Length of the array of token amounts */ error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. */ 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); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"allowance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientAllowance","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"balance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientBalance","type":"error"},{"inputs":[{"internalType":"address","name":"approver","type":"address"}],"name":"ERC20InvalidApprover","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC20InvalidReceiver","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"ERC20InvalidSender","type":"error"},{"inputs":[{"internalType":"address","name":"spender","type":"address"}],"name":"ERC20InvalidSpender","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"platformPercentage","type":"uint8"},{"indexed":false,"internalType":"uint8","name":"stakerPercentage","type":"uint8"},{"indexed":false,"internalType":"uint8","name":"lpPercentage","type":"uint8"}],"name":"DistributionPercentagesUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newThreshold","type":"uint256"}],"name":"DistributionThresholdUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"wallet","type":"address"},{"indexed":false,"internalType":"bool","name":"isExcluded","type":"bool"}],"name":"ExcludedFromFeesUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tokenAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"ethAmount","type":"uint256"}],"name":"LiquidityAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newLpAddress","type":"address"}],"name":"LpAddressUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"pair","type":"address"},{"indexed":false,"internalType":"bool","name":"isMarketPair","type":"bool"}],"name":"MarketPairUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"PlatformTaxDistributed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address[]","name":"stakingContracts","type":"address[]"},{"indexed":false,"internalType":"uint8[]","name":"percentages","type":"uint8[]"}],"name":"StakingContractsUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newTaxAddress","type":"address"}],"name":"TaxAddressUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"platformCut","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"stakersCut","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"liquidityCut","type":"uint256"}],"name":"TaxDistributed","type":"event"},{"anonymous":false,"inputs":[],"name":"TaxRenounced","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"isTaxEnabled","type":"bool"}],"name":"TaxStatusUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"buyTax","type":"uint8"},{"indexed":false,"internalType":"uint8","name":"sellTax","type":"uint8"}],"name":"TaxesUpdated","type":"event"},{"anonymous":false,"inputs":[],"name":"TradingOpen","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","t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IUniswapV2Router02","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"stakingContracts_","type":"address[]"},{"internalType":"uint8[]","name":"percentages_","type":"uint8[]"}],"name":"updateStakingContracts","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newRouter","type":"address"}],"name":"updateUniswapRouter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"walletStates","outputs":[{"internalType":"bool","name":"isMarketPair","type":"bool"},{"internalType":"bool","name":"isExemptFromTax","type":"bool"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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