Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: MIT
pragma solidity 0.8.25;

contract MiddleMan {
    
    error NativeTransferFailed();
    error SendETHWithoutData();
    event FundsForwardedWithData(bytes data);
   
    address private immutable VAULT;

    constructor(address vault) {
        VAULT = vault;
    }

    fallback() external payable {
        send(VAULT, msg.value);
        emit FundsForwardedWithData(msg.data);
    }

    // Add this to reject plain ETH transfers
    receive() external payable {
        revert SendETHWithoutData();
    }

    function forward(bytes calldata data) external payable {
        send(VAULT, msg.value);
        emit FundsForwardedWithData(data);
    }

    function send(address to, uint256 value) internal {
        bool success;
        assembly {
            // call{} will return (bool, bytes), 
            // using assembly instead of call{} can save gas, 
            // no need to copy the return data to memory
            // Also can set the limit of gas use to 100k
            success := call(100000, to, value, 0, 0, 0, 0)
        }

        if (!success) {
            revert NativeTransferFailed();
        }
    }

    function getVault() external view returns (address) {
        return VAULT;
    }
}

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

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[{"inputs":[{"internalType":"address","name":"vault","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"NativeTransferFailed","type":"error"},{"inputs":[],"name":"SendETHWithoutData","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"FundsForwardedWithData","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[{"internalType":"bytes","name":"data","type":"bytes"}],"name":"forward","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"getVault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

00000000000000000000000022572c29edef16e4ca124966623d96509faad9da

-----Decoded View---------------
Arg [0] : vault (address): 0x22572C29EDef16e4Ca124966623d96509FaaD9DA

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000022572c29edef16e4ca124966623d96509faad9da