Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {ICallExecutor} from 'interfaces/intent/ICallExecutor.sol';

/**
 * @title CallExecutor
 * @notice Contract that executes calls to external contracts
 */
contract CallExecutor is ICallExecutor {
  /**
   * @inheritdoc ICallExecutor
   * @dev The main difference between this and a solidity low-level call is
   * that we limit the number of bytes that the callee can cause to be
   * copied to caller memory. This prevents stupid things like malicious
   * contracts returning 10,000,000 bytes causing a local OOG when copying
   * to memory.
   */
  function excessivelySafeCall(
    address _target,
    uint256 _gas,
    uint256 _value,
    uint16 _maxCopy,
    bytes memory _calldata
  ) external returns (bool _success, bytes memory _returnData) {
    // set up for assembly call
    uint256 _toCopy;
    _returnData = new bytes(_maxCopy);
    // dispatch message to recipient
    // by assembly calling "handle" function
    // we call via assembly to avoid memcopying a very large returndata
    // returned by a malicious contract
    assembly {
      _success :=
        call(
          _gas, // gas
          _target, // recipient
          _value, // ether value
          add(_calldata, 0x20), // inloc
          mload(_calldata), // inlen
          0, // outloc
          0 // outlen
        )
      // limit our copy to 256 bytes
      _toCopy := returndatasize()
      if gt(_toCopy, _maxCopy) { _toCopy := _maxCopy }
      // Store the length of the copied bytes
      mstore(_returnData, _toCopy)
      // copy the bytes from returndata[0:_toCopy]
      returndatacopy(add(_returnData, 0x20), 0, _toCopy)
    }
    return (_success, _returnData);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

/**
 * @title ICallExecutor
 * @notice Interface for the CallExecutor contract, executes calls to external contracts
 */
interface ICallExecutor {
  /**
   * @notice Safely call a target contract, use when you _really_ really _really_ don't trust the called
   * contract. This prevents the called contract from causing reversion of the caller in as many ways as we can.
   * @param _target The address to call
   * @param _gas The amount of gas to forward to the remote contract
   * @param _value The value in wei to send to the remote contract
   * @param _maxCopy The maximum number of bytes of returndata to copy to memory
   * @param _calldata The data to send to the remote contract
   * @return _success Whether the call was successful
   * @return _returnData Returndata as `.call()`. Returndata is capped to `_maxCopy` bytes.
   */
  function excessivelySafeCall(
    address _target,
    uint256 _gas,
    uint256 _value,
    uint16 _maxCopy,
    bytes memory _calldata
  ) external returns (bool _success, bytes memory _returnData);
}

{
  "remappings": [
    "ds-test/=../../node_modules/ds-test/src/",
    "forge-std/=../../node_modules/forge-std/src/",
    "isolmate/=../../node_modules/isolmate/src/",
    "@hyperlane/=../../node_modules/@hyperlane-xyz/core/contracts/",
    "@openzeppelin/=../../node_modules/@openzeppelin/",
    "@upgrades/=lib/openzeppelin-foundry-upgrades/src/",
    "xerc20/=lib/xerc20/solidity/contracts/",
    "contracts/=src/contracts/",
    "interfaces/=src/interfaces/",
    "utils/=script/utils/",
    "@eth-optimism/=../../node_modules/@eth-optimism/",
    "@hyperlane-xyz/=../../node_modules/@hyperlane-xyz/",
    "@layerzerolabs/=../../node_modules/@layerzerolabs/",
    "erc4626-tests/=lib/xerc20/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-gas-snapshot/=lib/xerc20/lib/permit2/lib/forge-gas-snapshot/src/",
    "fx-portal/=../../node_modules/fx-portal/",
    "openzeppelin-contracts/=lib/xerc20/lib/openzeppelin-contracts/",
    "openzeppelin-foundry-upgrades/=lib/openzeppelin-foundry-upgrades/src/",
    "openzeppelin/=lib/xerc20/lib/openzeppelin-contracts/contracts/",
    "permit2/=lib/xerc20/lib/permit2/",
    "prb-test/=lib/xerc20/lib/prb-test/src/",
    "prb/test/=lib/xerc20/lib/prb-test/src/",
    "solidity-stringutils/=lib/openzeppelin-foundry-upgrades/lib/solidity-stringutils/",
    "solmate/=lib/xerc20/lib/permit2/lib/solmate/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "viaIR": false,
  "libraries": {}
}

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[{"inputs":[{"internalType":"address","name":"_target","type":"address"},{"internalType":"uint256","name":"_gas","type":"uint256"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"uint16","name":"_maxCopy","type":"uint16"},{"internalType":"bytes","name":"_calldata","type":"bytes"}],"name":"excessivelySafeCall","outputs":[{"internalType":"bool","name":"_success","type":"bool"},{"internalType":"bytes","name":"_returnData","type":"bytes"}],"stateMutability":"nonpayable","type":"function"}]

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