文件 1 的 1:Valentine.sol
pragma solidity 0.8.18;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
modifier onlyOwner() {
_checkOwner();
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address to, 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 from,
address to,
uint256 amount
) external returns (bool);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
_balances[to] += amount;
}
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
unchecked {
_balances[account] += amount;
}
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
}
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
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 _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
interface IFactory{
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline) external;
}
library Address{
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
}
contract Valentine is ERC20, Ownable{
using Address for address payable;
mapping (address user => bool status) private isExcludedFromFees;
mapping (address user => bool status) private isBlacklisted;
mapping (address user => uint256 timestamp) public lastTrade;
IRouter public router;
address public pair;
address private marketingWallet = 0x16476eb731B48efC593Ed3eCC0db26291d338aba;
bool private swapping;
bool public swapEnabled;
bool public tradingEnabled;
uint256 public swapThreshold = 5273 * 10**9;
uint256 public maxWallet = 10000000 * 10**9;
uint256 public maxTx = 10000000 * 10**9;
uint256 public delay;
struct Taxes {
uint256 buy;
uint256 sell;
uint256 transfer;
}
Taxes public taxes = Taxes(10,30,0);
modifier mutexLock() {
if (!swapping) {
swapping = true;
_;
swapping = false;
}
}
constructor(address _router) ERC20("Valentine", "$VAL") {
_mint(msg.sender, 10000000 * 10 ** 9);
router = IRouter(_router);
pair = IFactory(router.factory()).createPair(address(this), router.WETH());
isExcludedFromFees[address(this)] = true;
isExcludedFromFees[msg.sender] = true;
isExcludedFromFees[marketingWallet] = true;
_approve(address(this), address(router), type(uint256).max);
}
function decimals() public view virtual override returns (uint8) {
return 9;
}
function _transfer(address sender, address recipient, uint256 amount) internal override {
require(amount > 0, "Transfer amount must be greater than zero");
if (swapping || isExcludedFromFees[sender] || isExcludedFromFees[recipient]) {
super._transfer(sender, recipient, amount);
return;
}
else{
require(tradingEnabled, "Trading not enabled");
require(!isBlacklisted[sender] && !isBlacklisted[recipient], "Blacklisted address");
if(sender != pair) {
require(lastTrade[sender] + delay <= block.timestamp, "WAIT PLEASE");
lastTrade[sender] = block.timestamp;
}
if(recipient != pair){
require(balanceOf(recipient) + amount <= maxWallet, "Wallet limit exceeded");
require(lastTrade[recipient] + delay <= block.timestamp, "WAIT PLEASE");
lastTrade[recipient] = block.timestamp;
}
}
uint256 fees;
if(recipient == pair) fees = amount * taxes.sell / 100;
else if(sender == pair) fees = amount * taxes.buy / 100;
else fees = amount * taxes.transfer / 100;
if (swapEnabled && sender != pair && !swapping) swapFees();
super._transfer(sender, recipient, amount - fees);
if(fees > 0){
super._transfer(sender, address(this), fees);
}
}
function swapFees() private mutexLock {
uint256 contractBalance = balanceOf(address(this));
if (contractBalance >= swapThreshold) {
uint256 initialBalance = address(this).balance;
swapTokensForEth(swapThreshold);
uint256 deltaBalance = address(this).balance - initialBalance;
payable(marketingWallet).sendValue(deltaBalance);
}
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp);
}
function setSwapEnabled(bool status) external onlyOwner {
swapEnabled = status;
}
function setSwapTreshhold(uint256 amount) external onlyOwner {
swapThreshold = amount * 10**9;
}
function setTaxes(uint256 _buyTax, uint256 _sellTax, uint256 _transferTax) external onlyOwner {
require(_buyTax <= 69 && _sellTax <= 69 && _transferTax <= 69, "Taxes too high");
taxes = Taxes (_buyTax, _sellTax, _transferTax);
}
function setRouterAndPair(address newRouter, address newPair) external onlyOwner{
router = IRouter(newRouter);
pair = newPair;
_approve(address(this), address(newRouter), type(uint256).max);
}
function valentine() external onlyOwner{
tradingEnabled = true;
swapEnabled = true;
taxes.transfer = 0;
}
function removeLimits() external onlyOwner{
maxTx = totalSupply();
maxWallet = totalSupply();
taxes.transfer = 0;
}
function setDelay(uint256 time) external onlyOwner{
delay = time;
}
function setLimits(uint256 _maxTx, uint256 _maxWallet) external onlyOwner{
maxTx = _maxTx * 10**9;
maxWallet = _maxWallet * 10**9;
}
function updateToken(address newwallet) external onlyOwner{
marketingWallet = newwallet;
}
function setIsExcludedFromFees(address _address, bool state) external onlyOwner {
isExcludedFromFees[_address] = state;
}
function bulkIsExcludedFromFees(address[] memory accounts, bool state) external onlyOwner{
for(uint256 i = 0; i < accounts.length; i++){
isExcludedFromFees[accounts[i]] = state;
}
}
function setBlacklist(address[] memory accounts, bool status) external onlyOwner{
for(uint256 i = 0; i < accounts.length; i++){
isBlacklisted[accounts[i]] = status;
}
}
function rescueETH(uint256 weiAmount) external{
payable(marketingWallet).sendValue(weiAmount);
}
function rescueERC20(address tokenAdd, uint256 amount) external{
IERC20(tokenAdd).transfer(marketingWallet, amount);
}
receive() external payable {}
}