Contract Source Code:
/**
WEBSITE: https://h20eth.com/
TELEGRAM: https://t.me/h20eth
TWITTER: https://twitter.com/H20Eth
*/
// SPDX-License-Identifier: NONE
pragma solidity 0.8.21;
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
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);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
abstract 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);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
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 recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, 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) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
uint256 currentAllowance = _allowances[sender][_msgSender()];
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
}
_transfer(sender, recipient, amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
function _init(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_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 _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
contract H20 is ERC20, Ownable {
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
mapping (address => bool) private _isExcludedFromFees;
uint256 public buyFee;
uint256 public sellFee;
uint256 public walletToWalletTransferFee;
address public marketingWallet;
address private DEAD = 0x000000000000000000000000000000000000dEaD;
bool public tradingEnabled;
uint256 public swapTokensAtAmount;
bool public swapWithLimit;
bool private swapping;
event ExcludeFromFees(address indexed account, bool isExcluded);
event ExcludedFromMaxTransactionLimit(address indexed account, bool isExcluded);
event ExcludedFromMaxWalletLimit(address indexed account, bool isExcluded);
event MaxWalletLimitAmountChanged(uint256 maxWalletLimitRate);
event MaxWalletLimitStateChanged(bool maxWalletLimit);
event MaxTransactionLimitAmountChanged(uint256 maxTransferRateBuy, uint256 maxTransferRateSell);
event MaxTransactionLimitStateChanged(bool maxTransactionLimit);
event BuyFeeUpdated(uint256 buyFee);
event SellFeeUpdated(uint256 sellFee);
event WalletToWalletTransferFeeUpdated(uint256 walletToWalletTransferFee);
event SwapTokensAtAmountUpdated(uint256 swapTokensAtAmount);
event SwapAndSend(uint256 tokensSwapped, uint256 valueReceived);
event SwapWithLimitUpdated(bool swapWithLimit);
constructor () ERC20("H2O Token", "H2O")
{
address newOwner = 0x71405A325C80155474e71106D4bC3a873D915e79;
transferOwnership(newOwner);
address router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // ETH UniswapV2 Router
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(router);
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_approve(address(this), address(uniswapV2Router), type(uint256).max);
buyFee = 2;
sellFee = 2;
walletToWalletTransferFee = 1;
marketingWallet = 0x71405A325C80155474e71106D4bC3a873D915e79;
_isExcludedFromFees[owner()] = true;
_isExcludedFromFees[address(0xdead)] = true;
_isExcludedFromFees[address(this)] = true;
_isExcludedFromMaxTxLimit[owner()] = true;
_isExcludedFromMaxTxLimit[address(0)] = true;
_isExcludedFromMaxTxLimit[address(this)] = true;
_isExcludedFromMaxTxLimit[DEAD] = true;
_isExcludedFromMaxWalletLimit[owner()] = true;
_isExcludedFromMaxWalletLimit[address(0)] = true;
_isExcludedFromMaxWalletLimit[address(this)] = true;
_isExcludedFromMaxWalletLimit[DEAD] = true;
_init(owner(), 100000000 ether);
swapTokensAtAmount = totalSupply() / 5000;
maxTransactionAmountBuy = 1500000000000000000000000;
maxTransactionAmountSell = 1500000000000000000000000;
maxWalletAmount = 1500000000000000000000000;
}
receive() external payable {
}
function claimStuckTokens(address token) external onlyOwner {
if (token == address(0x0)) {
(bool success,) = msg.sender.call{value: address(this).balance}("");
require(success, "Claim failed");
return;
}
IERC20 ERC20token = IERC20(token);
uint256 balance = ERC20token.balanceOf(address(this));
ERC20token.transfer(msg.sender, balance);
}
function excludeFromFees(address account, bool excluded) external onlyOwner{
require(_isExcludedFromFees[account] != excluded,"Account is already the value of 'excluded'");
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function isExcludedFromFees(address account) public view returns(bool) {
return _isExcludedFromFees[account];
}
function setTotalFees(uint256 _buyFee, uint256 _sellFee) external onlyOwner {
require(_buyFee <= 25, "Fees cannot be more than 25%");
buyFee = _buyFee;
emit BuyFeeUpdated(buyFee);
sellFee = _sellFee;
emit SellFeeUpdated(sellFee);
}
function setWalletToWalletTransferFee(uint256 _walletToWalletTransferFee) external onlyOwner {
require(_walletToWalletTransferFee <= 10, "Wallet to Wallet Transfer Fee cannot be more than 10%");
walletToWalletTransferFee = _walletToWalletTransferFee;
emit WalletToWalletTransferFeeUpdated(walletToWalletTransferFee);
}
function enableTrading() public onlyOwner{
require(!tradingEnabled, "Trading is already enabled");
tradingEnabled = true;
}
function _transfer(address from,address to,uint256 amount) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(tradingEnabled || _isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not enabled yet");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (maxTransactionLimitEnabled)
{
if ((from == uniswapV2Pair || to == uniswapV2Pair) &&
_isExcludedFromMaxTxLimit[from] == false &&
_isExcludedFromMaxTxLimit[to] == false)
{
if (from == uniswapV2Pair) {
require(
amount <= maxTransactionAmountBuy,
"AntiWhale: Transfer amount exceeds the maxTransactionAmount"
);
} else {
require(
amount <= maxTransactionAmountSell,
"AntiWhale: Transfer amount exceeds the maxTransactionAmount"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (canSwap &&
!swapping &&
to == uniswapV2Pair
) {
swapping = true;
if (swapWithLimit) {
contractTokenBalance = swapTokensAtAmount;
}
swap(contractTokenBalance);
swapping = false;
}
uint256 _totalFees;
if (_isExcludedFromFees[from] || _isExcludedFromFees[to] || swapping) {
_totalFees = 0;
} else if (from == uniswapV2Pair) {
_totalFees = buyFee;
} else if (to == uniswapV2Pair) {
_totalFees = sellFee;
} else {
_totalFees = walletToWalletTransferFee;
}
if (_totalFees > 0) {
uint256 fees = (amount * _totalFees) / 100;
amount = amount - fees;
super._transfer(from, address(this), fees);
}
if (maxWalletLimitEnabled) {
if (_isExcludedFromMaxWalletLimit[from] == false &&
_isExcludedFromMaxWalletLimit[to] == false &&
to != uniswapV2Pair
) {
uint balance = balanceOf(to);
require(
balance + amount <= maxWalletAmount,
"MaxWallet: Recipient exceeds the maxWalletAmount"
);
}
}
super._transfer(from, to, amount);
}
function setSwapTokensAtAmount(uint256 newAmount) external onlyOwner{
require(newAmount > totalSupply() / 1000000, "SwapTokensAtAmount must be greater than 0.0001% of total supply");
swapTokensAtAmount = newAmount;
emit SwapTokensAtAmountUpdated(swapTokensAtAmount);
}
function setSwapAmount(bool _swapWithLimit) external onlyOwner{
swapWithLimit = _swapWithLimit;
emit SwapWithLimitUpdated(swapWithLimit);
}
function swap(uint256 tokenAmount) private {
uint256 initialBalance = address(this).balance;
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp);
uint256 newBalance = address(this).balance - initialBalance;
bool success = payable(marketingWallet).send(newBalance);
if (success) {
emit SwapAndSend(tokenAmount, newBalance);
}
}
//=======MaxWallet=======//
mapping(address => bool) private _isExcludedFromMaxWalletLimit;
bool public maxWalletLimitEnabled = true;
uint256 public maxWalletAmount;
function setEnableMaxWalletLimit(bool enable) external onlyOwner {
require(
enable != maxWalletLimitEnabled,
"Max wallet limit is already set to that state"
);
maxWalletLimitEnabled = enable;
emit MaxWalletLimitStateChanged(maxWalletLimitEnabled);
}
function setMaxWalletAmount(uint256 _maxWalletAmount) external onlyOwner {
require(
_maxWalletAmount >= (totalSupply() / (10 ** decimals())) / 100,
"Max wallet percentage cannot be lower than 1%"
);
maxWalletAmount = _maxWalletAmount * (10 ** decimals());
emit MaxWalletLimitAmountChanged(maxWalletAmount);
}
function setExcludeFromMaxWallet(address account, bool exclude) external onlyOwner {
require(
_isExcludedFromMaxWalletLimit[account] != exclude,
"Account is already set to that state"
);
_isExcludedFromMaxWalletLimit[account] = exclude;
emit ExcludedFromMaxWalletLimit(account, exclude);
}
function isExcludedFromMaxWalletLimit(address account) public view returns(bool) {
return _isExcludedFromMaxWalletLimit[account];
}
//=======MaxTransaction=======//
mapping(address => bool) private _isExcludedFromMaxTxLimit;
bool public maxTransactionLimitEnabled = true;
uint256 public maxTransactionAmountBuy;
uint256 public maxTransactionAmountSell;
function setMaxTransactionAmounts(uint256 _maxTransactionAmountBuy, uint256 _maxTransactionAmountSell, uint256 _maxWalletAmount) external onlyOwner {
require(
_maxTransactionAmountBuy >= (totalSupply() / (10 ** decimals())) / 1000 &&
_maxTransactionAmountSell >= (totalSupply() / (10 ** decimals()))/ 1000,
"Max Transaction limis cannot be lower than 0.1% of total supply"
);
maxTransactionAmountBuy = _maxTransactionAmountBuy * (10 ** decimals());
maxTransactionAmountSell = _maxTransactionAmountSell * (10 ** decimals());
emit MaxTransactionLimitAmountChanged(maxTransactionAmountBuy, maxTransactionAmountSell);
require(
_maxWalletAmount >= (totalSupply() / (10 ** decimals())) / 100,
"Max wallet percentage cannot be lower than 1%"
);
maxWalletAmount = _maxWalletAmount * (10 ** decimals());
emit MaxWalletLimitAmountChanged(maxWalletAmount);
}
function setExcludeFromMaxTransactionLimit(address account, bool exclude) external onlyOwner {
require(
_isExcludedFromMaxTxLimit[account] != exclude,
"Account is already set to that state"
);
_isExcludedFromMaxTxLimit[account] = exclude;
emit ExcludedFromMaxTransactionLimit(account, exclude);
}
function isExcludedFromMaxTransaction(address account) public view returns(bool) {
return _isExcludedFromMaxTxLimit[account];
}
}