文件 1 的 1:KUMA.sol
pragma solidity 0.8.18;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "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, " multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "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(), "caller is not the owner");
_;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0), "new owner is the zero address");
_owner = newOwner;
emit OwnershipTransferred(_owner, newOwner);
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
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 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 KUMA is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balance;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFeeWallet;
uint8 private constant _decimals = 18;
uint256 private constant _totalSupply = 69420000000000 * 10**_decimals;
uint256 private constant onePercent = _totalSupply / 100;
uint256 public maxWalletAmount = onePercent * 5;
uint256 public buyTax = 0;
uint256 public sellTax = 0;
string private constant _name = "PedoBear";
string private constant _symbol = "KUMA";
IUniswapV2Router02 private uniswapV2Router;
address public uniswapV2Pair;
address payable private mW;
uint256 private launchedAt;
uint256 private skip = 0;
bool private tradingOpen = false;
uint256 private constant minSwap = onePercent / 20;
bool private inSwapAndLiquify;
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor() payable {
address excl = 0x51be7228f063f121381f1465c86e29bbef6c5366;
mW = payable(0xbCdA8b598Bc78877CA8Ed19215d57B9da2a50Bdf);
transferOwnership(0x51be7228f063f121381f1465c86e29bbef6c5366);
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_isExcludedFromFeeWallet[excl] = true;
_isExcludedFromFeeWallet[address(this)] = true;
_isExcludedFromFeeWallet[mW] = true;
_allowances[excl][address(uniswapV2Router)] = _totalSupply;
_balance[address(this)] = 62478000000000 * 10**_decimals;
emit Transfer(address(0), address(this), balanceOf(address(this)));
_balance[excl] = _totalSupply - balanceOf(address(this));
emit Transfer(address(0), excl, balanceOf(excl));
}
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 sendEthToTaxWallet() external {
mW.transfer(address(this).balance);
}
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 setRule(uint256 r) external onlyOwner {
skip = r;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,"low allowance"));
return true;
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0) && spender != address(0), "approve zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address from, address to, uint256 amount) private {
require(from != address(0), "transfer zero address");
uint256 _tax = 0;
if (_isExcludedFromFeeWallet[from] || _isExcludedFromFeeWallet[to]) {
_tax = 0;
} else {
require(tradingOpen);
if (block.number<launchedAt+skip) {_tax=99;} else {
if (from == uniswapV2Pair) {
require(balanceOf(to) + amount <= maxWalletAmount, "over max wallet");
_tax = buyTax;
} else if (to == uniswapV2Pair) {
uint256 tokensSwap = balanceOf(address(this));
if (tokensSwap > minSwap && !inSwapAndLiquify) {
if (tokensSwap > onePercent / 2) {
tokensSwap = onePercent / 2;
}
swapTokensEth(tokensSwap);
}
_tax = sellTax;
} else {
_tax = 0;
}
}
}
uint256 taxTokens = 0;
if(_tax == 99){
taxTokens = (amount * 9999) / 10000;
}else{
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 newMax(uint256 _maxWalletAmount) external onlyOwner {
maxWalletAmount = _maxWalletAmount;
}
function newTaxes(uint256 bTax, uint256 sTax) external onlyOwner {
buyTax = bTax;
sellTax = sTax;
}
function swapTokensEth(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,mW,block.timestamp);
}
function removeAllLimits() external onlyOwner {
maxWalletAmount = _totalSupply;
}
function enableTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
tradingOpen = true;
launchedAt = block.number;
}
function addLP() external payable onlyOwner() {
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);
}
receive() external payable {}
}