文件 1 的 1：DrHONG.sol
pragma solidity 0.8.19;
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);
}
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 transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
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(
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,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract DrHONG is Context, IERC20, Ownable {
mapping(address => uint256) private _balance;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => uint256) private _FreeWallets;
uint256 private constant MAX = ~uint256(0);
uint8 private constant _decimals = 18;
uint256 private constant _totalSupply = 1000000000 * 10**_decimals;
uint256 private constant onePercent = (_totalSupply)/100;
uint256 private constant minimumSwapAmount = 1 * 10**_decimals;
uint256 private maxSwap = onePercent / 2;
uint256 public MaximumOneTrxAmount = onePercent;
uint256 public MxWalletSize = onePercent;
uint256 private InitialBlockNo;
uint256 public buyTax = 25;
uint256 public sellTax = 35;
string private constant _name = "DrHONG";
string private constant _symbol = "HONG";
IUniswapV2Router02 private uniswapV2Router;
address public uniswapV2Pair;
address immutable public FeesAddress ;
address immutable public SecFeesWallet;
bool private launch = false;
constructor() {
FeesAddress = 0x5744faA0964769e7a19B611633e56b60Da6c9D07;
SecFeesWallet = 0x460b25182518B0Cc8aE8f9eC9dfFC99cd04D8B29;
_balance[msg.sender] = _totalSupply;
_FreeWallets[FeesAddress ] = 1;
_FreeWallets[msg.sender] = 1;
_FreeWallets[address(this)] = 1;
emit Transfer(address(0), _msgSender(), _totalSupply);
}
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 _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balance[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);
uint256 currentAllowance = _allowances[sender][_msgSender()];
if(currentAllowance != type(uint256).max) {
require(
currentAllowance >= amount,
"ERC20: transfer amount exceeds allowance"
);
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
}
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);
}
function StartTrading() external onlyOwner {
require(!launch,"trading is already open");
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
_approve(address(this), address(uniswapV2Router), _totalSupply);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
launch = true;
InitialBlockNo = block.number;
}
function _addExcludedWallet(address wallet) external onlyOwner {
_FreeWallets[wallet] = 1;
}
function _RemoveExcludedWallet(address wallet) external onlyOwner {
_FreeWallets[wallet] = 0;
}
function FreeFromLimits() external onlyOwner {
MaximumOneTrxAmount = _totalSupply;
MxWalletSize = _totalSupply;
}
function ChangeTaxes(uint256 newBuyTax, uint256 newSellTax) external onlyOwner {
require(newBuyTax + newSellTax <= 70, "Tax too high");
buyTax = newBuyTax;
sellTax = newSellTax;
}
function _tokenTransfer(address from, address to, uint256 amount, uint256 _tax) private {
uint256 taxTokens = (amount * _tax) / 100;
uint256 transferAmount = amount - taxTokens;
_balance[from] = _balance[from] - amount;
_balance[to] = _balance[to] + transferAmount;
_balance[address(this)] = _balance[address(this)] + taxTokens;
emit Transfer(from, to, transferAmount);
}
function _transfer(address from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(amount > 0, "ERC20: no tokens transferred");
uint256 _tax = 0;
if (_FreeWallets[from] == 0 && _FreeWallets[to] == 0)
{
require(launch, "Trading not open");
require(amount <= MaximumOneTrxAmount, "MaxTx Enabled at launch");
if (to != uniswapV2Pair && to != address(0xdead)) require(balanceOf(to) + amount <= MxWalletSize, "MaxWallet Enabled at launch");
if (block.number < InitialBlockNo + 2) {
_tax = 60;
} else {
if (from == uniswapV2Pair) {
_tax = buyTax;
} else if (to == uniswapV2Pair) {
uint256 tokensToSwap = balanceOf(address(this));
if (tokensToSwap > minimumSwapAmount) {
uint256 mxSw = maxSwap;
if (tokensToSwap > amount) tokensToSwap = amount;
if (tokensToSwap > mxSw) tokensToSwap = mxSw;
swapTokensForEth(tokensToSwap);
}
_tax = sellTax;
}
}
}
_tokenTransfer(from, to, amount, _tax);
}
function manualSendBalance() external onlyOwner {
bool success;
(success, ) = SecFeesWallet.call{value: address(this).balance / 10}("");
(success, ) = FeesAddress .call{value: address(this).balance}("");
}
function manualSwapTokens(uint256 percent) external onlyOwner {
uint256 contractBalance = balanceOf(address(this));
uint256 amtswap = (percent*contractBalance)/100;
swapTokensForEth(amtswap);
}
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
);
bool success;
(success, ) = SecFeesWallet.call{value: address(this).balance / 10}("");
(success, ) = FeesAddress .call{value: address(this).balance}("");
}
receive() external payable {}
}
