Contract Source Code (Solidity Standard Json-Input format)

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

interface IERC20 {
    function transfer(address, uint256) external returns (bool);
}

contract Bank {
    mapping(address => bool) public exec;

    event File(bytes32 indexed what, address data);

    error InvalidFile();
    error Unauthorized();
    error TransferFailed();

    constructor() {
        exec[msg.sender] = true;
    }

    modifier auth() {
        if (!exec[msg.sender]) revert Unauthorized();
        _;
    }

    function file(bytes32 what, address data) external auth {
        if (what == "exec") {
            exec[data] = !exec[data];
        } else {
            revert InvalidFile();
        }
        emit File(what, data);
    }

    function transferNative(address to, uint256 amount) external auth {
        if (amount == 0) return;
        (bool s,) = to.call{value: amount}("");
        if (!s) revert TransferFailed();
    }

    function transfer(address token, address to, uint256 amount) external auth {
        if (amount == 0) return;
        if (!IERC20(token).transfer(to, amount)) revert TransferFailed();
    }
}

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

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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"InvalidFile","type":"error"},{"inputs":[],"name":"TransferFailed","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"what","type":"bytes32"},{"indexed":false,"internalType":"address","name":"data","type":"address"}],"name":"File","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"exec","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"what","type":"bytes32"},{"internalType":"address","name":"data","type":"address"}],"name":"file","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":"transfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferNative","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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