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pragma solidity 0.8.15;
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library SafeMath {
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function add(uint256 a, uint256 b) internal pure returns (uint256) {return a + b;}
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function sub(uint256 a, uint256 b) internal pure returns (uint256) {return a - b;}
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function mul(uint256 a, uint256 b) internal pure returns (uint256) {return a * b;}
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function div(uint256 a, uint256 b) internal pure returns (uint256) {return a / b;}
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function mod(uint256 a, uint256 b) internal pure returns (uint256) {return a % b;}
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function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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unchecked {uint256 c = a + b; if(c < a) return(false, 0); return(true, c);}}
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function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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unchecked {if(b > a) return(false, 0); return(true, a - b);}}
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function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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unchecked {if (a == 0) return(true, 0); uint256 c = a * b;
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if(c / a != b) return(false, 0); return(true, c);}}
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function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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unchecked {if(b == 0) return(false, 0); return(true, a / b);}}
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function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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unchecked {if(b == 0) return(false, 0); return(true, a % b);}}
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function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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unchecked{require(b <= a, errorMessage); return a - b;}}
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function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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unchecked{require(b > 0, errorMessage); return a / b;}}
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function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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unchecked{require(b > 0, errorMessage); return a % b;}}}
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interface IERC20 {
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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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abstract contract Ownable {
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address internal owner;
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constructor(address _owner) {owner = _owner;}
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modifier onlyOwner() {require(isOwner(msg.sender), "!OWNER"); _;}
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function isOwner(address account) public view returns (bool) {return account == owner;}
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function transferOwnership(address payable adr) public onlyOwner {owner = adr; emit OwnershipTransferred(adr);}
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event OwnershipTransferred(address owner);
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}
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interface IFactory{
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function createPair(address tokenA, address tokenB) external returns (address pair);
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function getPair(address tokenA, address tokenB) external view returns (address pair);
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}
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interface IRouter {
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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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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 removeLiquidityWithPermit(
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address tokenA,
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address tokenB,
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uint liquidity,
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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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bool approveMax, uint8 v, bytes32 r, bytes32 s
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) external returns (uint amountA, uint amountB);
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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) external;
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}
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contract KusunokiInu is IERC20, Ownable {
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using SafeMath for uint256;
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string private constant _name = 'Kusunoki Inu';
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string private constant _symbol = '$KUSINU';
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uint8 private constant _decimals = 9;
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uint256 private _totalSupply = 100 * 10**9 * (10 ** _decimals);
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uint256 public _maxTxAmount = ( _totalSupply * 100 ) / 10000;
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uint256 public _maxWalletToken = ( _totalSupply * 300 ) / 10000;
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mapping (address => uint256) _balances;
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mapping (address => mapping (address => uint256)) private _allowances;
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mapping (address => bool) public isFeeExempt;
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IRouter router;
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address public pair;
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bool tradingAllowed = false;
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uint256 liquidityFee = 0;
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uint256 marketingFee = 0;
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uint256 totalFee = 0;
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uint256 sellFee = 0;
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uint256 transferFee = 0;
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uint256 feeDenominator = 10000;
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bool swapEnabled = true;
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uint256 swapTimes;
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bool swapping;
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uint256 swapThreshold = ( _totalSupply * 400 ) / 100000;
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uint256 _minTokenAmount = ( _totalSupply * 15 ) / 100000;
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modifier lockTheSwap {swapping = true; _; swapping = false;}
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address public constant liquidity_receiver = 0xe6deD6Db376C5F78e15b54c2813AB48C8B7f7bDD;
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address public constant DEAD = 0x000000000000000000000000000000000000dEaD;
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address public constant marketing_receiver = 0xe6deD6Db376C5F78e15b54c2813AB48C8B7f7bDD;
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constructor() Ownable(msg.sender) {
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IRouter _router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
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address _pair = IFactory(_router.factory()).createPair(address(this), _router.WETH());
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router = _router;
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pair = _pair;
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isFeeExempt[address(this)] = true;
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isFeeExempt[liquidity_receiver] = true;
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isFeeExempt[marketing_receiver] = true;
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isFeeExempt[msg.sender] = true;
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_balances[msg.sender] = _totalSupply;
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emit Transfer(address(0), msg.sender, _totalSupply);
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}
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receive() external payable {}
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function name() public pure returns (string memory) {return _name;}
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function symbol() public pure returns (string memory) {return _symbol;}
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function decimals() public pure returns (uint8) {return _decimals;}
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function totalSupply() public view override returns (uint256) {return _totalSupply;}
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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 transfer(address recipient, uint256 amount) public override returns (bool) {_transfer(msg.sender, recipient, amount);return true;}
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function allowance(address owner, address spender) public view override returns (uint256) {return _allowances[owner][spender];}
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function isCont(address addr) internal view returns (bool) {uint size; assembly { size := extcodesize(addr) } return size > 0; }
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function approve(address spender, uint256 amount) public override returns (bool) {_approve(msg.sender, spender, amount);return true;}
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function getCirculatingSupply() public view returns (uint256) {return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(address(0)));}
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function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
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_transfer(sender, recipient, amount);
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_approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, "ERC20: transfer amount exceeds allowance"));
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return true;
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}
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function _approve(address owner, address spender, uint256 amount) 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(address sender, address recipient, uint256 amount) private {
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preTxCheck(sender, recipient, amount);
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checktradingAllowed(sender, recipient);
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checkMaxWallet(sender, recipient, amount);
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swapbackCounters(sender, recipient);
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checkTxLimit(sender, recipient, amount);
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swapBack(sender, recipient, amount);
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_balances[sender] = _balances[sender].sub(amount);
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uint256 amountReceived = shouldTakeFee(sender, recipient) ? takeFee(sender, recipient, 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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}
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function preTxCheck(address sender, address recipient, uint256 amount) internal view {
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require(sender != address(0), "ERC20: transfer from the zero address");
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require(recipient != address(0), "ERC20: transfer to the zero address");
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require(amount > uint256(0), "Transfer amount must be greater than zero");
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require(amount <= balanceOf(sender),"You are trying to transfer more than your balance");
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}
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function checktradingAllowed(address sender, address recipient) internal view {
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if(!isFeeExempt[sender] && !isFeeExempt[recipient]){require(tradingAllowed, "tradingAllowed");}
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}
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function checkMaxWallet(address sender, address recipient, uint256 amount) internal view {
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if(isCont(recipient) && sender != pair && !isCont(sender)){require((_balances[recipient].add(amount)) <= _totalSupply);}
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if(!isFeeExempt[sender] && !isFeeExempt[recipient] && recipient != address(pair) && recipient != address(DEAD)){
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require((_balances[recipient].add(amount)) <= _maxWalletToken, "Exceeds maximum wallet amount.");}
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}
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function swapbackCounters(address sender, address recipient) internal {
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if(recipient == pair && !isFeeExempt[sender]){swapTimes += uint256(1);}
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}
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function startTrading() external onlyOwner {
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tradingAllowed = true;
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}
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function shouldTakeFee(address sender, address recipient) internal view returns (bool) {
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return !isFeeExempt[sender] && !isFeeExempt[recipient];
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}
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function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
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uint256 feeAmount = amount.div(feeDenominator).mul(getTotalFee(sender, recipient));
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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 getTotalFee(address sender, address recipient) internal view returns (uint256) {
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if(recipient == pair){return sellFee;}
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if(sender == pair){return totalFee;}
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return transferFee;
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}
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function checkTxLimit(address sender, address recipient, uint256 amount) internal view {
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require(amount <= _maxTxAmount || isFeeExempt[sender] || isFeeExempt[recipient], "TX Limit Exceeded");
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}
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function shouldSwapBack(address sender, address recipient, uint256 amount) internal view returns (bool) {
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bool aboveMin = amount >= _minTokenAmount;
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bool aboveThreshold = balanceOf(address(this)) >= swapThreshold;
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return !swapping && swapEnabled && aboveMin && !isFeeExempt[sender] && recipient == pair && swapTimes >= uint256(3) && aboveThreshold;
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}
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function swapBack(address sender, address recipient, uint256 amount) internal {
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if(shouldSwapBack(sender, recipient, amount)){swapAndLiquify(swapThreshold); swapTimes = 0;}
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}
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function swapAndLiquify(uint256 tokens) private lockTheSwap {
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uint256 denominator = (liquidityFee.add(marketingFee)) * 2;
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uint256 tokensToAddLiquidityWith = tokens.mul(liquidityFee).div(denominator);
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uint256 toSwap = tokens.sub(tokensToAddLiquidityWith);
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uint256 initialBalance = address(this).balance;
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swapTokensForETH(toSwap);
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uint256 deltaBalance = address(this).balance.sub(initialBalance);
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uint256 unitBalance= deltaBalance.div(denominator.sub(liquidityFee));
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uint256 ETHToAddLiquidityWith = unitBalance.mul(liquidityFee);
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if(ETHToAddLiquidityWith > uint256(0)){
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addLiquidity(tokensToAddLiquidityWith, ETHToAddLiquidityWith); }
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uint256 remainingBalance = address(this).balance;
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if(remainingBalance > uint256(0)){
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payable(marketing_receiver).transfer(remainingBalance); }
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}
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function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
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_approve(address(this), address(router), tokenAmount);
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router.addLiquidityETH{value: ETHAmount}(
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address(this),
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tokenAmount,
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0,
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0,
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liquidity_receiver,
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block.timestamp);
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}
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function swapTokensForETH(uint256 tokenAmount) private {
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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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_approve(address(this), address(router), tokenAmount);
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router.swapExactTokensForETHSupportingFeeOnTransferTokens(
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tokenAmount,
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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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} |
