Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta

More Options

• Similar
• Submit Audit
• Compare

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@uniswap/lib/contracts/libraries/TransferHelper.sol";
import "../synth-core/interfaces/IWrapper.sol";

/**
 * @title A contract that implements the unwrap and transfer logic
 */
contract Unwrapper is Context, Ownable {

    address public wrapper;

    event Unwrapped(uint256 amount, address indexed to);

    /**
     * CONSTRUCTOR
     */
    constructor(address _wrapper) public {
        wrapper = _wrapper;
    }

    /**
    * @notice Set wrapper
     */
    function setWrapper(address _newWrapper) external onlyOwner {
        wrapper = _newWrapper;
    }

    /**
     * @notice Implements an unwrap logic with transfer
     * @param _amountIn input amount
     * @param _to address to send gas token
     */
    function unwrap(
        uint256 _amountIn,
        address _to
    ) external {
        TransferHelper.safeTransferFrom(wrapper, _msgSender(), address(this), _amountIn);
        IWrapper(wrapper).withdraw(_amountIn);
        TransferHelper.safeTransferETH(_to, _amountIn);

        emit Unwrapped(_amountIn, _to);
    }

    receive() external payable {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^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() {
        _transferOwnership(_msgSender());
    }

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

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

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

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// 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;
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity >=0.6.0;

// 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::safeApprove: 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::safeTransfer: 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::transferFrom: transferFrom failed'
        );
    }

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

// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.0;

interface IWrapper {
    function deposit() external payable;
    function withdraw(uint256 amount) external;
}

{
  "libraries": {},
  "optimizer": {
    "enabled": true,
    "runs": 2000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "viaIR": true
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_wrapper","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"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"Unwrapped","type":"event"},{"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":"_newWrapper","type":"address"}],"name":"setWrapper","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amountIn","type":"uint256"},{"internalType":"address","name":"_to","type":"address"}],"name":"unwrap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"wrapper","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

0000000000000000000000004200000000000000000000000000000000000006

-----Decoded View---------------
Arg [0] : _wrapper (address): 0x4200000000000000000000000000000000000006

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000004200000000000000000000000000000000000006