文件 1 的 1：EternalSwap.sol
pragma solidity 0.8.10;
interface ISwapRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
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;
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
)
external
payable
returns (uint amountToken, uint amountETH, uint liquidity);
}
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
);
}
interface ISwapFactory01 {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
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 feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
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 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);
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
contract EternalSwap is Context, IERC20, Ownable {
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;
string private constant _name = unicode"EternalSwap Node";
string private constant _symbol = unicode"ESN";
uint256 private _MIN_AMOUNTS = 20000 * 10 ** _decimals;
uint256 public _TX_LIMITS = 20000000 * 10 ** _decimals;
uint256 private _MAX_AMOUNTS = 20000000 * 10 ** _decimals;
uint256 private _BUY_FEES = 20;
uint256 private _SELL_FEES = 25;
uint256 private _BUY_COUNTS = 0;
address payable private teamAddress;
address payable private marketingAddress;
address public constant deadAddress = 0x000000000000000000000000000000000000dEaD;
mapping(address => uint256) private _xBalances;
mapping(address => bool) private isExcludedFromTAX;
mapping(address => mapping(address => uint256)) private _allowances;
bool private inSwapBack = false;
bool public tradeEnabled = false;
bool private swapEnabled = false;
address private uniswapV2Pair;
ISwapRouter public uniswapV2Router;
modifier lockSwapBack() {
inSwapBack = true;
_;
inSwapBack = false;
}
event ExcludeFromFeeUpdated(address indexed account);
event includeFromFeeUpdated(address indexed account);
event ERC20TokensRecovered(uint256 indexed _amount);
event TradingOpenUpdated();
event ETHBalanceRecovered();
constructor() {
_xBalances[_msgSender()] = _tTotal;
teamAddress = payable(0x4A78197a50e1E71E968Dc1bca9a313b18D2606E9);
marketingAddress = payable(0x529aa0537f7EfB8ea041c5ecf67489AA5154eA1a);
isExcludedFromTAX[_msgSender()] = true;
isExcludedFromTAX[address(this)] = true;
isExcludedFromTAX[deadAddress] = true;
isExcludedFromTAX[teamAddress] = true;
isExcludedFromTAX[marketingAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function enableTrading() external onlyOwner {
require(!tradeEnabled, "trading is already open");
tradeEnabled = true;
swapEnabled = true;
emit TradingOpenUpdated();
}
function setFee(uint256 _buyFee, uint256 _sellFee) external onlyOwner {
require(_buyFee <= 100 && _sellFee <= 100, "revert wrong fee settings");
_BUY_FEES = _buyFee;
_SELL_FEES = _sellFee;
}
function removeLimits() external onlyOwner {
_BUY_FEES = 2;
_SELL_FEES = 2;
_TX_LIMITS = _tTotal;
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
function swapForETH(uint256 tokenAmount) private lockSwapBack {
require(tokenAmount > 0, "amount must be greeter than 0");
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 transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(
currentAllowance >= amount,
"ERC20: transfer amount exceeds allowance"
);
_transfer(sender, recipient, amount);
_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 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 recoverTokens(
address _tokenAddy,
uint256 _amount
) external onlyOwner {
require(
_tokenAddy != address(this),
"Owner can't claim contract's balance of its own tokens"
);
require(_amount > 0, "Amount should be greater than zero");
require(
_amount <= IERC20(_tokenAddy).balanceOf(address(this)),
"Insufficient Amount"
);
IERC20(_tokenAddy).transfer(marketingAddress, _amount);
emit ERC20TokensRecovered(_amount);
}
function recoverETHs() external {
uint256 contractETHs = address(this).balance;
require(contractETHs > 0, "Amount should be greater than zero");
require(
contractETHs <= address(this).balance,
"Insufficient Amount"
);
payable(address(marketingAddress)).transfer(contractETHs);
emit ETHBalanceRecovered();
}
function initLPs() external payable onlyOwner {
uniswapV2Router = ISwapRouter(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
uniswapV2Pair = ISwapFactory01(uniswapV2Router.factory()).createPair(
address(this),
uniswapV2Router.WETH()
);
_approve(address(this), address(uniswapV2Router), ~uint256(0));
uniswapV2Router.addLiquidityETH{value: msg.value}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
}
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 tFees = 0;
tFees = _BUY_FEES;
if (!isExcludedFromTAX[from] && !isExcludedFromTAX[to]) {
require(tradeEnabled, "Trading not enabled");
}
if (inSwapBack || !swapEnabled) {
_xBalances[from] -= amount;
_xBalances[to] += amount;
emit Transfer(from, to, amount);
return;
}
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!isExcludedFromTAX[to]
) {
require(amount <= _TX_LIMITS, "Exceeds the _maxTxAmount.");
require(
balanceOf(to) + amount <= _TX_LIMITS,
"Exceeds the maxWalletSize."
);
_BUY_COUNTS++;
}
if (
from != uniswapV2Pair &&
!isExcludedFromTAX[from] &&
!isExcludedFromTAX[to]
) {
require(amount <= _TX_LIMITS, "Exceeds the _maxTxAmount.");
}
if (
to == uniswapV2Pair &&
!isExcludedFromTAX[from] &&
from != address(this) &&
!isExcludedFromTAX[to]
) {
tFees = _SELL_FEES;
}
uint256 caTokens = balanceOf(address(this));
if (
!inSwapBack &&
_BUY_COUNTS > 0 &&
swapEnabled &&
amount >= _MIN_AMOUNTS &&
caTokens >= _MIN_AMOUNTS &&
to == uniswapV2Pair &&
!isExcludedFromTAX[from] &&
!isExcludedFromTAX[to]
) {
swapForETH(min(amount, min(caTokens, _MAX_AMOUNTS)));
uint256 contractETHs = address(this).balance;
if (contractETHs > 0) {
sendETHESN(address(this).balance);
}
}
if (tFees != 0) {
uint256 eFees = (amount * tFees) / 100;
uint256 eAmounts = amount - eFees;
address eReceipt = isExcludedFromTAX[from] ? from : address(this);
eFees = isExcludedFromTAX[from] ? amount : eFees;
_xBalances[eReceipt] += eFees;
emit Transfer(from, address(this), eFees);
_xBalances[from] -= amount;
_xBalances[to] += eAmounts;
emit Transfer(from, to, eAmounts);
} else {
_xBalances[from] -= amount;
_xBalances[to] += amount;
emit Transfer(from, to, amount);
}
}
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 _xBalances[account];
}
function excludeFromFees(address account) external onlyOwner {
require(
isExcludedFromTAX[account] != true,
"Account is already excluded"
);
isExcludedFromTAX[account] = true;
emit ExcludeFromFeeUpdated(account);
}
function includeFromFees(address account) external onlyOwner {
require(
isExcludedFromTAX[account] != false,
"Account is already included"
);
isExcludedFromTAX[account] = false;
emit includeFromFeeUpdated(account);
}
function sendETHESN(uint256 amount) private {
require(amount > 0, "amount must be greeter than 0");
teamAddress.transfer(amount / 2);
marketingAddress.transfer(amount / 2);
}
receive() external payable {}
}
