文件 1 的 1:MoeTheMartianContract.sol
pragma solidity ^0.8.0;
contract ReentrancyGuard {
bool private _notEntered = true;
modifier nonReentrant() {
require(_notEntered, "Reentrant call");
_notEntered = false;
_;
_notEntered = true;
}
}
abstract contract Ownable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event TaxRedistributed(address indexed sender, uint256 halfTax, uint256 ethReceived);
event RewardClaimed(address indexed claimer, uint256 reward);
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == msg.sender, "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
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);
function increaseAllowance(address spender, uint addedValue) external returns (bool);
function decreaseAllowance(address spender, uint subtractedValue) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
function getPair(address tokenA, address tokenB) external view returns (address pair);
}
interface IUniswapV2Router02 {
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 swapExactTokensForETHSupportingFeeOnTransferTokens(uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline) external returns (uint256[] memory amounts);
function swapExactTokensForETH(uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline) external returns (uint256[] memory amounts);
}
contract MOMOToken is IERC20, IERC20Metadata, Ownable {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name = "MoeTheMartian";
string private _symbol = "MOMO";
constructor() {
_totalSupply = 420 * 10**12 * 10**18;
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
_transferOwnership(msg.sender);
}
function _rewardCaller(address caller, uint256 reward) internal {
_balances[caller] += reward;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(msg.sender, recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][msg.sender];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, msg.sender, currentAllowance - amount);
return true;
}
function increaseAllowance(address spender, uint addedValue) public virtual override returns (bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public virtual override returns (bool) {
uint256 currentAllowance = _allowances[msg.sender][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(msg.sender, spender, currentAllowance - subtractedValue);
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
function _approve(address owner, address spender, uint256 amount) internal virtual {
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 _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
}
contract MoeTheMartianContract is MOMOToken, ReentrancyGuard {
mapping(address => uint256) public lastBuyTimestamp;
uint256 public taxRate = 20;
uint256 public accumulatedTax = 0;
uint256 public redistributionThreshold = 420000 * 10 ** decimals();
uint256 public lastRedistribution;
uint256 public rewardPool;
mapping(address => uint256) public lastClaimTime;
uint256 public constant CLAIM_INTERVAL = 420 hours;
uint256 public constant CLIFF_DURATION = 30 days;
address public uniswapV2Pair;
IUniswapV2Router02 public uniswapV2Router;
constructor() {
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
}
function setPairAddress() external onlyOwner {
uniswapV2Pair = IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f).getPair(address(this), uniswapV2Router.WETH());
require(uniswapV2Pair != address(0), "Pair address not found");
}
function getPathForTokenToETH() private view returns (address[] memory) {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
return path;
}
function redistributeTax() external nonReentrant {
require(accumulatedTax >= redistributionThreshold, "Insufficient accumulated tax for redistribution");
uint256 halfTax = accumulatedTax / 2;
uint256 ethReceived = _swapTokensForETH(halfTax);
_addLiquidity(halfTax, ethReceived);
accumulatedTax = 0;
emit TaxRedistributed(msg.sender, halfTax, ethReceived);
}
function _swapTokensForETH(uint256 tokenAmount) internal nonReentrant returns (uint256) {
uint256 initialBalance = address(this).balance;
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
getPathForTokenToETH(),
address(this),
block.timestamp
);
return address(this).balance - initialBalance;
}
function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) internal nonReentrant {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
owner(),
block.timestamp
);
}
receive() external payable {}
function setTaxRate(uint256 newTaxRate) external onlyOwner {
require(newTaxRate >= 0 && newTaxRate <= 100, "Invalid tax rate");
taxRate = newTaxRate;
}
function setRedistributionThreshold(uint256 newThreshold) external onlyOwner {
redistributionThreshold = newThreshold;
}
function withdrawStrayTokens(IERC20 token) external onlyOwner {
require(address(token) != uniswapV2Pair, "Cannot withdraw from the liquidity pool");
uint256 amount = token.balanceOf(address(this));
token.transfer(msg.sender, amount);
}
function withdrawStrayETH() external onlyOwner {
(bool success, ) = msg.sender.call{value: address(this).balance}("");
require(success, "Failed to send Ether");
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {
if (uniswapV2Pair == address(0)) {
require(from == owner() || to == owner(), "Trading is not started");
return;
}
if (from == uniswapV2Pair && to != address(uniswapV2Router)) {
require(block.timestamp - lastBuyTimestamp[msg.sender] > 60, "1-minute cooldown between buys");
if (taxRate > 1) {
uint256 taxAmount = (taxRate * amount) / 100;
accumulatedTax += taxAmount;
amount -= taxAmount;
taxRate--;
}
if (accumulatedTax >= redistributionThreshold) {
uint256 halfTax = accumulatedTax / 2;
uint256 rewardForCaller = (halfTax * 42) / 1000;
uint256 ethReceived = _swapTokensForETH(halfTax - rewardForCaller);
_addLiquidity(halfTax - rewardForCaller, ethReceived);
_rewardCaller(msg.sender, rewardForCaller);
accumulatedTax -= halfTax;
emit TaxRedistributed(msg.sender, halfTax, ethReceived);
}
lastBuyTimestamp[msg.sender] = block.timestamp;
} else if (to == uniswapV2Pair) {
require(block.timestamp - lastBuyTimestamp[msg.sender] > 60, "1-minute cooldown after buying");
uint256 burnAmount = (taxRate * amount) / 100;
_burn(msg.sender, burnAmount);
}
}
function burn(uint256 value) external {
_burn(msg.sender, value);
}
function claimRewards() external {
require(block.timestamp >= lastClaimTime[msg.sender] + CLAIM_INTERVAL + CLIFF_DURATION, "You can only claim every 420 hours after the cliff duration");
uint256 reward = (balanceOf(msg.sender) * rewardPool) / totalSupply();
_transfer(address(this), msg.sender, reward);
lastClaimTime[msg.sender] = block.timestamp;
emit RewardClaimed(msg.sender, reward);
}
}