// SPDX-License-Identifier: MIT /** */ pragma solidity 0.8.15; abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } 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(_msgSender(), 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(_msgSender(), 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][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - amount); } return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), 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"); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); } function _createInitialSupply(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, 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"); unchecked { _balances[account] = accountBalance - amount; // Overflow not possible: amount <= accountBalance <= totalSupply. _totalSupply -= amount; } emit Transfer(account, address(0), 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); } } 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() external virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } interface IDexRouter { function factory() external pure returns (address); function WETH() external pure returns (address); function swapExactTokensForETHSupportingFeeOnTransferTokens( uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline ) external; function swapExactETHForTokensSupportingFeeOnTransferTokens( uint amountOutMin, address[] calldata path, address to, uint deadline ) external payable; function addLiquidityETH( address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline ) external payable returns ( uint256 amountToken, uint256 amountETH, uint256 liquidity ); } interface IDexFactory { function createPair(address tokenA, address tokenB) external returns (address pair); } contract DieProtocol is ERC20, Ownable { uint256 public maxBuyAmount; uint256 public maxSellAmount; uint256 public maxWalletAmount; IDexRouter public dexRouter; address public lpPair; bool private swapping; uint256 public swapTokensAtAmount; address operationsAddress; address devAddress; uint256 public tradingActiveBlock = 0; // 0 means trading is not active uint256 public blockForPenaltyEnd; mapping (address => bool) public boughtEarly; uint256 public botsCaught; bool public limitsInEffect = true; bool public tradingActive = false; bool public swapEnabled = false; // Anti-bot and anti-whale mappings and variables mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch bool public transferDelayEnabled = true; uint256 public buyTotalFees; uint256 public buyOperationsFee; uint256 public buyLiquidityFee; uint256 public buyDevFee; uint256 public buyBurnFee; uint256 public sellTotalFees; uint256 public sellOperationsFee; uint256 public sellLiquidityFee; uint256 public sellDevFee; uint256 public sellBurnFee; uint256 public tokensForOperations; uint256 public tokensForLiquidity; uint256 public tokensForDev; uint256 public tokensForBurn; /******************/ // exlcude from fees and max transaction amount mapping (address => bool) private _isExcludedFromFees; mapping (address => bool) public _isExcludedMaxTransactionAmount; // store addresses that a automatic market maker pairs. Any transfer *to* these addresses // could be subject to a maximum transfer amount mapping (address => bool) public automatedMarketMakerPairs; event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value); event EnabledTrading(); event RemovedLimits(); event ExcludeFromFees(address indexed account, bool isExcluded); event UpdatedMaxBuyAmount(uint256 newAmount); event UpdatedMaxSellAmount(uint256 newAmount); event UpdatedMaxWalletAmount(uint256 newAmount); event UpdatedOperationsAddress(address indexed newWallet); event MaxTransactionExclusion(address _address, bool excluded); event BuyBackTriggered(uint256 amount); event OwnerForcedSwapBack(uint256 timestamp); event CaughtEarlyBuyer(address sniper); event SwapAndLiquify( uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity ); event TransferForeignToken(address token, uint256 amount); constructor() ERC20("Die Protocol", "DIE") { address newOwner = msg.sender; // can leave alone if owner is deployer. IDexRouter _dexRouter = IDexRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); dexRouter = _dexRouter; // create pair lpPair = IDexFactory(_dexRouter.factory()).createPair(address(this), _dexRouter.WETH()); _excludeFromMaxTransaction(address(lpPair), true); _setAutomatedMarketMakerPair(address(lpPair), true); uint256 totalSupply = 5 * 1e12 * 1e18; maxBuyAmount = totalSupply * 2 / 100; maxSellAmount = totalSupply * 2 / 100; maxWalletAmount = totalSupply * 2 / 100; swapTokensAtAmount = totalSupply * 5 / 10000; buyOperationsFee = 20; buyLiquidityFee = 0; buyDevFee = 0; buyBurnFee = 0; buyTotalFees = buyOperationsFee + buyLiquidityFee + buyDevFee + buyBurnFee; sellOperationsFee = 20; sellLiquidityFee = 0; sellDevFee = 0; sellBurnFee = 0; sellTotalFees = sellOperationsFee + sellLiquidityFee + sellDevFee + sellBurnFee; _excludeFromMaxTransaction(newOwner, true); _excludeFromMaxTransaction(address(this), true); _excludeFromMaxTransaction(address(0xdead), true); excludeFromFees(newOwner, true); excludeFromFees(address(this), true); excludeFromFees(address(0xdead), true); operationsAddress = address(newOwner); devAddress = address(newOwner); _createInitialSupply(newOwner, totalSupply); transferOwnership(newOwner); } receive() external payable {} // only enable if no plan to airdrop function enableTrading(uint256 deadBlocks) external onlyOwner { require(!tradingActive, "Cannot reenable trading"); tradingActive = true; swapEnabled = true; tradingActiveBlock = block.number; blockForPenaltyEnd = tradingActiveBlock + deadBlocks; emit EnabledTrading(); } // remove limits after token is stable function removeLimits() external onlyOwner { limitsInEffect = false; transferDelayEnabled = false; emit RemovedLimits(); } function manageBoughtEarly(address wallet, bool flag) external onlyOwner { boughtEarly[wallet] = flag; } function massManageBoughtEarly(address[] calldata wallets, bool flag) external onlyOwner { for(uint256 i = 0; i < wallets.length; i++){ boughtEarly[wallets[i]] = flag; } } // disable Transfer delay - cannot be reenabled function disableTransferDelay() external onlyOwner { transferDelayEnabled = false; } function updateMaxBuyAmount(uint256 newNum) external onlyOwner { require(newNum >= (totalSupply() * 2 / 1000)/1e18, "Cannot set max buy amount lower than 0.2%"); maxBuyAmount = newNum * (10**18); emit UpdatedMaxBuyAmount(maxBuyAmount); } function updateMaxSellAmount(uint256 newNum) external onlyOwner { require(newNum >= (totalSupply() * 2 / 1000)/1e18, "Cannot set max sell amount lower than 0.2%"); maxSellAmount = newNum * (10**18); emit UpdatedMaxSellAmount(maxSellAmount); } function updateMaxWalletAmount(uint256 newNum) external onlyOwner { require(newNum >= (totalSupply() * 3 / 1000)/1e18, "Cannot set max wallet amount lower than 0.3%"); maxWalletAmount = newNum * (10**18); emit UpdatedMaxWalletAmount(maxWalletAmount); } // change the minimum amount of tokens to sell from fees function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner { require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply."); require(newAmount <= totalSupply() * 1 / 1000, "Swap amount cannot be higher than 0.1% total supply."); swapTokensAtAmount = newAmount; } function _excludeFromMaxTransaction(address updAds, bool isExcluded) private { _isExcludedMaxTransactionAmount[updAds] = isExcluded; emit MaxTransactionExclusion(updAds, isExcluded); } function airdropToWallets(address[] memory wallets, uint256[] memory amountsInTokens) external onlyOwner { require(wallets.length == amountsInTokens.length, "arrays must be the same length"); require(wallets.length < 600, "Can only airdrop 600 wallets per txn due to gas limits"); // allows for airdrop + launch at the same exact time, reducing delays and reducing sniper input. for(uint256 i = 0; i < wallets.length; i++){ address wallet = wallets[i]; uint256 amount = amountsInTokens[i]; super._transfer(msg.sender, wallet, amount); } } function excludeFromMaxTransaction(address updAds, bool isEx) external onlyOwner { if(!isEx){ require(updAds != lpPair, "Cannot remove uniswap pair from max txn"); } _isExcludedMaxTransactionAmount[updAds] = isEx; } function setAutomatedMarketMakerPair(address pair, bool value) external onlyOwner { require(pair != lpPair, "The pair cannot be removed from automatedMarketMakerPairs"); _setAutomatedMarketMakerPair(pair, value); emit SetAutomatedMarketMakerPair(pair, value); } function _setAutomatedMarketMakerPair(address pair, bool value) private { automatedMarketMakerPairs[pair] = value; _excludeFromMaxTransaction(pair, value); emit SetAutomatedMarketMakerPair(pair, value); } function updateBuyFees(uint256 _operationsFee, uint256 _liquidityFee, uint256 _devFee, uint256 _burnFee) external onlyOwner { buyOperationsFee = _operationsFee; buyLiquidityFee = _liquidityFee; buyDevFee = _devFee; buyBurnFee = _burnFee; buyTotalFees = buyOperationsFee + buyLiquidityFee + buyDevFee + buyBurnFee; require(buyTotalFees <= 15, "Must keep fees at 15% or less"); } function updateSellFees(uint256 _operationsFee, uint256 _liquidityFee, uint256 _devFee, uint256 _burnFee) external onlyOwner { sellOperationsFee = _operationsFee; sellLiquidityFee = _liquidityFee; sellDevFee = _devFee; sellBurnFee = _burnFee; sellTotalFees = sellOperationsFee + sellLiquidityFee + sellDevFee + sellBurnFee; require(sellTotalFees <= 30, "Must keep fees at 30% or less"); } function returnToNormalTax() external onlyOwner { sellOperationsFee = 20; sellLiquidityFee = 0; sellDevFee = 0; sellBurnFee = 0; sellTotalFees = sellOperationsFee + sellLiquidityFee + sellDevFee + sellBurnFee; require(sellTotalFees <= 30, "Must keep fees at 30% or less"); buyOperationsFee = 20; buyLiquidityFee = 0; buyDevFee = 0; buyBurnFee = 0; buyTotalFees = buyOperationsFee + buyLiquidityFee + buyDevFee + buyBurnFee; require(buyTotalFees <= 15, "Must keep fees at 15% or less"); } function excludeFromFees(address account, bool excluded) public onlyOwner { _isExcludedFromFees[account] = excluded; emit ExcludeFromFees(account, excluded); } function _transfer(address from, address to, uint256 amount) internal override { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "amount must be greater than 0"); if(!tradingActive){ require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active."); } if(blockForPenaltyEnd > 0){ require(!boughtEarly[from] || to == owner() || to == address(0xdead), "Bots cannot transfer tokens in or out except to owner or dead address."); } if(limitsInEffect){ if (from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !_isExcludedFromFees[from] && !_isExcludedFromFees[to]){ // at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch. if (transferDelayEnabled){ if (to != address(dexRouter) && to != address(lpPair)){ require(_holderLastTransferTimestamp[tx.origin] < block.number - 2 && _holderLastTransferTimestamp[to] < block.number - 2, "_transfer:: Transfer Delay enabled. Try again later."); _holderLastTransferTimestamp[tx.origin] = block.number; _holderLastTransferTimestamp[to] = block.number; } } //when buy if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) { require(amount <= maxBuyAmount, "Buy transfer amount exceeds the max buy."); require(amount + balanceOf(to) <= maxWalletAmount, "Cannot Exceed max wallet"); } //when sell else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) { require(amount <= maxSellAmount, "Sell transfer amount exceeds the max sell."); } else if (!_isExcludedMaxTransactionAmount[to]){ require(amount + balanceOf(to) <= maxWalletAmount, "Cannot Exceed max wallet"); } } } uint256 contractTokenBalance = balanceOf(address(this)); bool canSwap = contractTokenBalance >= swapTokensAtAmount; if(canSwap && swapEnabled && !swapping && !automatedMarketMakerPairs[from] && !_isExcludedFromFees[from] && !_isExcludedFromFees[to]) { swapping = true; swapBack(); swapping = false; } bool takeFee = true; // if any account belongs to _isExcludedFromFee account then remove the fee if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) { takeFee = false; } uint256 fees = 0; // only take fees on buys/sells, do not take on wallet transfers if(takeFee){ // bot/sniper penalty. if(earlyBuyPenaltyInEffect() && automatedMarketMakerPairs[from] && !automatedMarketMakerPairs[to] && buyTotalFees > 0){ if(!boughtEarly[to]){ boughtEarly[to] = true; botsCaught += 1; emit CaughtEarlyBuyer(to); } fees = amount * 99 / 100; tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees; tokensForOperations += fees * buyOperationsFee / buyTotalFees; tokensForDev += fees * buyDevFee / buyTotalFees; tokensForBurn += fees * buyBurnFee / buyTotalFees; } // on sell else if (automatedMarketMakerPairs[to] && sellTotalFees > 0){ fees = amount * sellTotalFees / 100; tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees; tokensForOperations += fees * sellOperationsFee / sellTotalFees; tokensForDev += fees * sellDevFee / sellTotalFees; tokensForBurn += fees * sellBurnFee / sellTotalFees; } // on buy else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) { fees = amount * buyTotalFees / 100; tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees; tokensForOperations += fees * buyOperationsFee / buyTotalFees; tokensForDev += fees * buyDevFee / buyTotalFees; tokensForBurn += fees * buyBurnFee / buyTotalFees; } if(fees > 0){ super._transfer(from, address(this), fees); } amount -= fees; } super._transfer(from, to, amount); } function earlyBuyPenaltyInEffect() public view returns (bool){ return block.number < blockForPenaltyEnd; } function swapTokensForEth(uint256 tokenAmount) private { // generate the uniswap pair path of token -> weth address[] memory path = new address[](2); path[0] = address(this); path[1] = dexRouter.WETH(); _approve(address(this), address(dexRouter), tokenAmount); // make the swap dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens( tokenAmount, 0, // accept any amount of ETH path, address(this), block.timestamp ); } function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private { // approve token transfer to cover all possible scenarios _approve(address(this), address(dexRouter), tokenAmount); // add the liquidity dexRouter.addLiquidityETH{value: ethAmount}( address(this), tokenAmount, 0, // slippage is unavoidable 0, // slippage is unavoidable address(0xdead), block.timestamp ); } function swapBack() private { if(tokensForBurn > 0 && balanceOf(address(this)) >= tokensForBurn) { _burn(address(this), tokensForBurn); } tokensForBurn = 0; uint256 contractBalance = balanceOf(address(this)); uint256 totalTokensToSwap = tokensForLiquidity + tokensForOperations + tokensForDev; if(contractBalance == 0 || totalTokensToSwap == 0) {return;} if(contractBalance > swapTokensAtAmount * 20){ contractBalance = swapTokensAtAmount * 20; } bool success; // Halve the amount of liquidity tokens uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2; swapTokensForEth(contractBalance - liquidityTokens); uint256 ethBalance = address(this).balance; uint256 ethForLiquidity = ethBalance; uint256 ethForOperations = ethBalance * tokensForOperations / (totalTokensToSwap - (tokensForLiquidity/2)); uint256 ethForDev = ethBalance * tokensForDev / (totalTokensToSwap - (tokensForLiquidity/2)); ethForLiquidity -= ethForOperations + ethForDev; tokensForLiquidity = 0; tokensForOperations = 0; tokensForDev = 0; tokensForBurn = 0; if(liquidityTokens > 0 && ethForLiquidity > 0){ addLiquidity(liquidityTokens, ethForLiquidity); } (success,) = address(devAddress).call{value: ethForDev}(""); (success,) = address(operationsAddress).call{value: address(this).balance}(""); } function transferForeignToken(address _token, address _to) external onlyOwner returns (bool _sent) { require(_token != address(0), "_token address cannot be 0"); require(_token != address(this), "Can't withdraw native tokens"); uint256 _contractBalance = IERC20(_token).balanceOf(address(this)); _sent = IERC20(_token).transfer(_to, _contractBalance); emit TransferForeignToken(_token, _contractBalance); } // withdraw ETH if stuck or someone sends to the address function withdrawStuckETH() external onlyOwner { bool success; (success,) = address(msg.sender).call{value: address(this).balance}(""); } function setOperationsAddress(address _operationsAddress) external onlyOwner { require(_operationsAddress != address(0), "_operationsAddress address cannot be 0"); operationsAddress = payable(_operationsAddress); } function setDevAddress(address _devAddress) external onlyOwner { require(_devAddress != address(0), "_devAddress address cannot be 0"); devAddress = payable(_devAddress); } // force Swap back if slippage issues. function forceSwapBack() external onlyOwner { require(balanceOf(address(this)) >= swapTokensAtAmount, "Can only swap when token amount is at or higher than restriction"); swapping = true; swapBack(); swapping = false; emit OwnerForcedSwapBack(block.timestamp); } // useful for buybacks or to reclaim any ETH on the contract in a way that helps holders. function buyBackTokens(uint256 amountInWei) external onlyOwner { require(amountInWei <= 10 ether, "May not buy more than 10 ETH in a single buy to reduce sandwich attacks"); address[] memory path = new address[](2); path[0] = dexRouter.WETH(); path[1] = address(this); // make the swap dexRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amountInWei}( 0, // accept any amount of Ethereum path, address(0xdead), block.timestamp ); emit BuyBackTriggered(amountInWei); } }

Das Protokoll

Beginnen Sie mit der Entwicklung auf QuickNode

Quellcode: