Contract 0xb04b6898d9eafd45e13dbe10ed06cf06d4b9d11f

 
 
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0x94fdb0bdfafda7971e9088c3688373824bd71403c33cd023a43cf049f80890800x60806040143764112022-01-15 3:37:343 days 7 hrs ago0xc0de37faf039a479e0d62d85efeb3edfd8d5b222 IN  Create: BatchSend0 BNB0.00689356
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Contract Source Code Verified (Exact Match)

Contract Name:
BatchSend

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 3 : BatchSend.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "../librarys/TransferHelper.sol";

contract BatchSend {
    address public owner;
    uint256 public maxCounts = 300;

    constructor() {
        owner = msg.sender;
    }
    
    // Events
    event BatchTokenSend(address indexed sender, address indexed token, uint256 indexed total, uint256 counts);
    event BatchOirginSend(address indexed sender, uint256 indexed total, uint256 totalAmount, uint256 counts);
    event EmergencyWithdrawToken(address indexed token, address indexed to, uint256 amount);
    
    // Errors
    error MaximumLimit(uint256 maxCounts, uint256 sendCounts);
    error InconsistentQuantity(uint256 addressCount, uint256 amountCount);

    modifier onlyOwner() {
        require(msg.sender == owner, "caller is not the owner");
        _;
    }
    
    modifier MaximumCheck(uint256 sendCounts) {
        if (sendCounts > maxCounts)
            revert MaximumLimit({
                maxCounts: maxCounts,
                sendCounts: sendCounts
            });
        _;
    }
    
    modifier QuantityCheck(uint256 addressCount, uint256 amountCount) {
        if (addressCount != amountCount)
            revert InconsistentQuantity({
                addressCount: addressCount,
                amountCount: amountCount
            });
        _;
    }
    
    /// Batch send the erc20 tokens of the current chain
    function batchTokenSend(
        address _token, 
        address[] calldata _users, 
        uint256[] calldata _amounts
    ) external MaximumCheck(_users.length) QuantityCheck(_users.length, _amounts.length) {
        require(_token != address(0), "token is zero address");

        uint256 total = 0;
        for (uint256 index = 0; index < _users.length; index++) {
            require(address(_users[index]) != address(0), "contains an unverified address");
            
            TransferHelper.safeTransferFrom(_token, msg.sender, _users[index], _amounts[index]);
            total += _amounts[index];
        }

        emit BatchTokenSend(msg.sender, _token, total, _users.length);
    }
    
    /// Batch send the original tokens of the current chain
    function batchOriginSend(
        address[] calldata _users, 
        uint256[] calldata _amounts
    ) external payable MaximumCheck(_users.length) QuantityCheck(_users.length, _amounts.length) {
        uint256 counts =  _users.length;

        uint256 totalAmount = 0;
        for (uint256 index = 0; index < counts; index++) {
            totalAmount += _amounts[index];
        }
        require(totalAmount <= msg.value, "insufficient balance");
        
        uint256 total = 0;
        for (uint256 index = 0; index < counts; index++) {
            require(address(_users[index]) != address(0), "contains an unverified address");
            
            TransferHelper.safeTransferETH(_users[index], _amounts[index]);
            total += _amounts[index];
        }
        
        emit BatchOirginSend(msg.sender, total, totalAmount, counts);
    }
    
    function setMaximum(uint256 _num) external onlyOwner{
        maxCounts = _num;
    }

    function emergencyWithdrawToken(address _token, address _to) public onlyOwner{
        uint256 balance = IERC20(_token).balanceOf(address(this));
        require(balance > 0, "insufficient balance");

        TransferHelper.safeTransfer(_token, _to, balance);

        emit EmergencyWithdrawToken(_token, _to, balance);
    }
}

File 2 of 3 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 3 of 3 : TransferHelper.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

library TransferHelper {
    function safeApprove(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('approve(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper:safeApprove: approve failed");
    }

    function safeTransfer(
        address token,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transfer(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper:safeTransfer: transfer failed");
    }

    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) internal {
        // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), "TransferHelper:transferFrom: transferFrom failed");
    }

    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        require(success, "TransferHelper:safeTransferETH: ETH transfer failed");
    }
}

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

Contract Security Audit

Contract ABI

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Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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