文件 1 的 1:C2DToken.sol
pragma solidity 0.8.18;
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 C2DToken is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
mapping(address => bool) private _earlyBirds;
address payable private _taxWallet;
uint256 private _preventSwapBefore = 10;
uint256 private buyTax = 5;
uint256 private sellTax = 5;
uint256 public buyCount = 0;
uint256 public launchTime;
uint8 private constant _decimals = 18;
uint256 private constant _tTotal = 100000000 * 10 ** _decimals;
string private constant _name = unicode"Caryn2D AI";
string private constant _symbol = unicode"C2D";
uint256 public _taxSwapThreshold = (_tTotal * 1) / 10000;
uint256 public _maxTaxSwap = (_tTotal * 1) / 100;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
mapping(address => bool) public automatedMarketMakerPairs;
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_taxWallet = payable(_msgSender());
_balances[_msgSender()] = 55000000 * 10 ** _decimals;
emit Transfer(address(0), _msgSender(), _balances[_msgSender()]);
_balances[address(this)] = 45000000 * 10 ** _decimals;
emit Transfer(address(0), address(this), _balances[address(this)]);
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_earlyBirds[address(this)] = true;
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFee[account] = excluded;
}
function setAutomatedMarketMakerPair(address pair, bool value) public {
require(_msgSender() == _taxWallet);
require(
pair != uniswapV2Pair,
"The pair cannot be removed from automatedMarketMakerPairs"
);
_setAutomatedMarketMakerPair(pair, value);
}
function updateBuyTax(uint256 _buyTax) external onlyOwner {
require(_buyTax <= 10, "Tax cannot be higher than 10%");
buyTax = _buyTax;
}
function updateSellTax(uint256 _sellTax) external onlyOwner {
require(_sellTax <= 10, "Tax cannot be higher than 10%");
sellTax = _sellTax;
}
function setEarlyBird(address account, bool value) public {
require(_msgSender() == _taxWallet);
_setEarlyBirds(account, value);
}
function setEarlyBirds(address[] calldata accounts, bool value) public {
require(_msgSender() == _taxWallet);
for (uint i = 0; i < accounts.length; i++) {
_setEarlyBirds(accounts[i], value);
}
}
function _setEarlyBirds(address account, bool value) private {
_earlyBirds[account] = value;
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function setSwapEnabled(bool value) public onlyOwner {
swapEnabled = value;
}
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 _tTotal;
}
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);
}
function _transfer(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");
uint256 taxAmount = 0;
if (automatedMarketMakerPairs[from] && to != address(uniswapV2Router) && !_isExcludedFromFee[to]) {
buyCount++;
}
if (automatedMarketMakerPairs[from] && !_isExcludedFromFee[to] && !_isExcludedFromFee[from]) {
if (block.timestamp < launchTime + (2 minutes)) {
require(_earlyBirds[to], "Not early bird!");
}
taxAmount = amount.mul(buyTax).div(100);
}
if (automatedMarketMakerPairs[to] && !_isExcludedFromFee[to] && !_isExcludedFromFee[from]) {
taxAmount = amount.mul(sellTax).div(100);
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && !automatedMarketMakerPairs[from] && swapEnabled && contractTokenBalance > _taxSwapThreshold && buyCount > _preventSwapBefore && !_isExcludedFromFee[to] && !_isExcludedFromFee[from]) {
swapTokensForEth(min(amount, min(contractTokenBalance, _maxTaxSwap)));
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
if (taxAmount > 0) {
_balances[address(this)] = _balances[address(this)].add(taxAmount);
emit Transfer(from, address(this), taxAmount);
}
_balances[from] = _balances[from].sub(amount);
_balances[to] = _balances[to].add(amount.sub(taxAmount));
emit Transfer(from, to, amount.sub(taxAmount));
}
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 sendETHToFee(uint256 amount) private {
_taxWallet.transfer(amount);
}
function openTrading() external onlyOwner() {
require(!tradingOpen, "trading is already open");
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(uniswapV2Router), _tTotal);
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);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
launchTime = block.timestamp;
swapEnabled = true;
tradingOpen = true;
}
receive() external payable {}
function withdrawStuckTokens(address tkn) public {
require(_msgSender() == _taxWallet);
if (tkn == address(0)) {
bool success;
(success, ) = address(msg.sender).call{value: address(this).balance}(
""
);
} else {
require(IERC20(tkn).balanceOf(address(this)) > 0, "No tokens");
uint256 amount = IERC20(tkn).balanceOf(address(this));
IERC20(tkn).transfer(msg.sender, amount);
}
}
function manualSwap() external {
require(_msgSender() == _taxWallet);
uint256 tokenBalance = balanceOf(address(this));
if (tokenBalance > 0) {
swapTokensForEth(tokenBalance);
}
uint256 ethBalance = address(this).balance;
if (ethBalance > 0) {
sendETHToFee(ethBalance);
}
}
}