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pragma solidity ^0.8.5;
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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(uint256 a, uint256 b, string memory errorMessage) 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(uint256 a, uint256 b, string memory errorMessage) 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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interface ERC20 {
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function totalSupply() external view returns (uint256);
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function decimals() external view returns (uint8);
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function symbol() external view returns (string memory);
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function name() external view returns (string memory);
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function getOwner() external view returns (address);
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function balanceOf(address account) external view returns (uint256);
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function transfer(address recipient, uint256 amount) external returns (bool);
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function allowance(address _owner, address spender) external view returns (uint256);
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function approve(address spender, uint256 amount) external returns (bool);
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function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(address indexed owner, address indexed spender, uint256 value);
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}
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abstract contract Ownable {
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address internal owner;
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constructor(address _owner) {
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owner = _owner;
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}
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modifier onlyOwner() {
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require(isOwner(msg.sender), "!OWNER"); _;
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}
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function isOwner(address account) public view returns (bool) {
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return account == owner;
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}
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function renounceOwnership() public onlyOwner {
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owner = address(0);
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emit OwnershipTransferred(address(0));
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}
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event OwnershipTransferred(address owner);
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}
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interface IDEXFactory {
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function createPair(address tokenA, address tokenB) external returns (address pair);
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}
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interface IDEXRouter {
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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 addLiquidity(
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address tokenA,
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address tokenB,
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uint amountADesired,
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uint amountBDesired,
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uint amountAMin,
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uint amountBMin,
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address to,
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uint deadline
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) external returns (uint amountA, uint amountB, uint liquidity);
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function addLiquidityETH(
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address token,
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uint amountTokenDesired,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline
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) external payable returns (uint amountToken, uint amountETH, uint liquidity);
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function swapExactTokensForTokensSupportingFeeOnTransferTokens(
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uint amountIn,
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external;
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function swapExactETHForTokensSupportingFeeOnTransferTokens(
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external payable;
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function swapExactTokensForETHSupportingFeeOnTransferTokens(
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uint amountIn,
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external;
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}
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contract Murder is ERC20, Ownable {
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using SafeMath for uint256;
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address routerAdress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
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address DEAD = 0x000000000000000000000000000000000000dEaD;
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string constant _name = "The Missing Link";
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string constant _symbol = "MURDER";
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uint8 constant _decimals = 9;
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uint256 _totalSupply = 1000000000 * (10 ** _decimals);
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uint256 public _maxWalletAmount = (_totalSupply * 100) / 100;
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mapping (address => uint256) _balances;
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mapping (address => mapping (address => uint256)) _allowances;
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mapping (address => bool) isFeeExempt;
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mapping (address => bool) isTxLimitExempt;
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uint256 liquidityFee = 0;
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uint256 marketingFee = 5;
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uint256 totalFee = liquidityFee + marketingFee;
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uint256 feeDenominator = 100;
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address public marketingFeeReceiver = 0x01AE08150025cD08B16151F2b65744BE9Df0ac02;
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IDEXRouter public router;
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address public pair;
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bool public swapEnabled = true;
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uint256 public swapThreshold = _totalSupply / 1000 * 5;
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bool inSwap;
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modifier swapping() { inSwap = true; _; inSwap = false; }
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constructor () Ownable(msg.sender) {
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router = IDEXRouter(routerAdress);
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pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this));
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_allowances[address(this)][address(router)] = type(uint256).max;
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address _owner = owner;
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isFeeExempt[0xf7750c95Fb919aC166C9598738BE968C56BE3DE2] = true;
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isTxLimitExempt[_owner] = true;
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isTxLimitExempt[0xf7750c95Fb919aC166C9598738BE968C56BE3DE2] = true;
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isTxLimitExempt[DEAD] = true;
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_balances[_owner] = _totalSupply;
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emit Transfer(address(0), _owner, _totalSupply);
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}
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receive() external payable { }
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function totalSupply() external view override returns (uint256) { return _totalSupply; }
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function decimals() external pure override returns (uint8) { return _decimals; }
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function symbol() external pure override returns (string memory) { return _symbol; }
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function name() external pure override returns (string memory) { return _name; }
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function getOwner() external view override returns (address) { return owner; }
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function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
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function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }
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function approve(address spender, uint256 amount) public override returns (bool) {
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_allowances[msg.sender][spender] = amount;
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emit Approval(msg.sender, spender, amount);
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return true;
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}
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function approveMax(address spender) external returns (bool) {
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return approve(spender, type(uint256).max);
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}
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function transfer(address recipient, uint256 amount) external override returns (bool) {
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return _transferFrom(msg.sender, recipient, amount);
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}
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function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
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if(_allowances[sender][msg.sender] != type(uint256).max){
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_allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
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}
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return _transferFrom(sender, recipient, amount);
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}
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function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
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if(inSwap){ return _basicTransfer(sender, recipient, amount); }
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if (recipient != pair && recipient != DEAD) {
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require(isTxLimitExempt[recipient] || _balances[recipient] + amount <= _maxWalletAmount, "Transfer amount exceeds the bag size.");
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}
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if(shouldSwapBack()){ swapBack(); }
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_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
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uint256 amountReceived = shouldTakeFee(sender) ? takeFee(sender, amount) : amount;
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_balances[recipient] = _balances[recipient].add(amountReceived);
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emit Transfer(sender, recipient, amountReceived);
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return true;
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}
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function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
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_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
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_balances[recipient] = _balances[recipient].add(amount);
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emit Transfer(sender, recipient, amount);
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return true;
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}
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function shouldTakeFee(address sender) internal view returns (bool) {
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return !isFeeExempt[sender];
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}
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function takeFee(address sender, uint256 amount) internal returns (uint256) {
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uint256 feeAmount = amount.mul(totalFee).div(feeDenominator);
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_balances[address(this)] = _balances[address(this)].add(feeAmount);
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emit Transfer(sender, address(this), feeAmount);
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return amount.sub(feeAmount);
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}
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function shouldSwapBack() internal view returns (bool) {
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return msg.sender != pair
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&& !inSwap
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&& swapEnabled
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&& _balances[address(this)] >= swapThreshold;
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}
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function swapBack() internal swapping {
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uint256 contractTokenBalance = swapThreshold;
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uint256 amountToLiquify = contractTokenBalance.mul(liquidityFee).div(totalFee).div(2);
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uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify);
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address[] memory path = new address[](2);
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path[0] = address(this);
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path[1] = router.WETH();
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uint256 balanceBefore = address(this).balance;
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router.swapExactTokensForETHSupportingFeeOnTransferTokens(
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amountToSwap,
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0,
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path,
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address(this),
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block.timestamp
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);
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uint256 amountETH = address(this).balance.sub(balanceBefore);
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uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));
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uint256 amountETHLiquidity = amountETH.mul(liquidityFee).div(totalETHFee).div(2);
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uint256 amountETHMarketing = amountETH.mul(marketingFee).div(totalETHFee);
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(bool MarketingSuccess, ) = payable(marketingFeeReceiver).call{value: amountETHMarketing, gas: 30000}("");
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require(MarketingSuccess, "receiver rejected ETH transfer");
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if(amountToLiquify > 0){
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router.addLiquidityETH{value: amountETHLiquidity}(
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address(this),
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amountToLiquify,
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0,
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0,
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DEAD,
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block.timestamp
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);
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emit AutoLiquify(amountETHLiquidity, amountToLiquify);
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}
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}
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function buyTokens(uint256 amount, address to) internal swapping {
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address[] memory path = new address[](2);
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path[0] = router.WETH();
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path[1] = address(this);
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router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
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0,
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path,
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to,
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block.timestamp
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);
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}
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function clearStuckBalance() external {
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payable(marketingFeeReceiver).transfer(address(this).balance);
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}
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function setWalletLimit(uint256 amountPercent) external onlyOwner {
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_maxWalletAmount = (_totalSupply * amountPercent ) / 1000;
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}
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event AutoLiquify(uint256 amountETH, uint256 amountBOG);
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} |
