Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta

More Options

• Similar
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import '@openzeppelin/contracts/security/ReentrancyGuard.sol';

/**
 * @title EthereumFeeProxy
 * @notice This contract performs an Ethereum transfer with a Fee sent to a third address and stores a reference
 */
contract EthereumFeeProxy is ReentrancyGuard {
  // Event to declare a transfer with a reference
  event TransferWithReferenceAndFee(
    address to,
    uint256 amount,
    bytes indexed paymentReference,
    uint256 feeAmount,
    address feeAddress
  );

  // Fallback function returns funds to the sender
  receive() external payable {
    revert('not payable receive');
  }

  /**
   * @notice Performs an Ethereum transfer with a reference
   * @param _to Transfer recipient
   * @param _paymentReference Reference of the payment related
   * @param _feeAmount The amount of the payment fee (part of the msg.value)
   * @param _feeAddress The fee recipient
   */
  function transferWithReferenceAndFee(
    address payable _to,
    bytes calldata _paymentReference,
    uint256 _feeAmount,
    address payable _feeAddress
  ) external payable {
    transferExactEthWithReferenceAndFee(
      _to,
      msg.value - _feeAmount,
      _paymentReference,
      _feeAmount,
      _feeAddress
    );
  }

  /**
   * @notice Performs an Ethereum transfer with a reference with an exact amount of eth
   * @param _to Transfer recipient
   * @param _amount Amount to transfer
   * @param _paymentReference Reference of the payment related
   * @param _feeAmount The amount of the payment fee (part of the msg.value)
   * @param _feeAddress The fee recipient
   */
  function transferExactEthWithReferenceAndFee(
    address payable _to,
    uint256 _amount,
    bytes calldata _paymentReference,
    uint256 _feeAmount,
    address payable _feeAddress
  ) public payable nonReentrant {
    (bool sendSuccess, ) = _to.call{value: _amount}('');
    require(sendSuccess, 'Could not pay the recipient');

    _feeAddress.transfer(_feeAmount);

    // transfer the remaining ethers to the sender
    (bool sendBackSuccess, ) = payable(msg.sender).call{value: msg.value - _amount - _feeAmount}(
      ''
    );
    require(sendBackSuccess, 'Could not send remaining funds to the payer');

    emit TransferWithReferenceAndFee(_to, _amount, _paymentReference, _feeAmount, _feeAddress);
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

{
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"bytes","name":"paymentReference","type":"bytes"},{"indexed":false,"internalType":"uint256","name":"feeAmount","type":"uint256"},{"indexed":false,"internalType":"address","name":"feeAddress","type":"address"}],"name":"TransferWithReferenceAndFee","type":"event"},{"inputs":[{"internalType":"address payable","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bytes","name":"_paymentReference","type":"bytes"},{"internalType":"uint256","name":"_feeAmount","type":"uint256"},{"internalType":"address payable","name":"_feeAddress","type":"address"}],"name":"transferExactEthWithReferenceAndFee","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address payable","name":"_to","type":"address"},{"internalType":"bytes","name":"_paymentReference","type":"bytes"},{"internalType":"uint256","name":"_feeAmount","type":"uint256"},{"internalType":"address payable","name":"_feeAddress","type":"address"}],"name":"transferWithReferenceAndFee","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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