Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

pragma solidity =0.6.6;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./libraries/TransferHelper.sol";
import "./interfaces/IWETH.sol";

contract FeeReceiverMultichain is Ownable {
    address public WETH;

    constructor(address _WETH) public {
        WETH = _WETH;
    }

    /// @dev converts WETH to ETH
    function unwrapWETH() public {
        uint256 balance = IWETH(WETH).balanceOf(address(this));
        require(balance > 0, "FeeReceiver: Nothing to unwrap");
        IWETH(WETH).withdraw(balance);
    }

    /// @dev lets the owner withdraw ETH from the contract
    function withdrawETH(address payable to, uint256 amount) external onlyOwner {
        to.transfer(amount);
    }

    /// @dev lets the owner withdraw any ERC20 Token from the contract
    function withdrawERC20Token(
        address token,
        address to,
        uint256 amount
    ) external onlyOwner {
        IERC20(token).transfer(to, amount);
    }

    /// @dev allows to receive ETH on this contract
    receive() external payable {}
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

pragma solidity >=0.5.0;

interface IWETH {
    function deposit() external payable;

    function transfer(address to, uint256 value) external returns (bool);

    function withdraw(uint256) external;

    function approve(address _spender, uint256 _amount) external returns (bool);

    function balanceOf(address _account) external view returns (uint256);
}

pragma solidity =0.6.6;

// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
    function safeApprove(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('approve(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper: APPROVE_FAILED");
    }

    function safeTransfer(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transfer(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper: TRANSFER_FAILED");
    }

    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper: TRANSFER_FROM_FAILED");
    }

    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        require(success, "TransferHelper: ETH_TRANSFER_FAILED");
    }
}

{
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_WETH","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"WETH","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unwrapWETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawERC20Token","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2

-----Decoded View---------------
Arg [0] : _WETH (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2