Contract Source Code:
File 1 of 1 : Spurdo
/**
*
*/
/**
https://spurdosparde.com/
https://t.me/SpurdoSpardeCoin
*/
// 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 {
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 IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
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 Spurdo 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("SPURDO", "SPURDO") {
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 = 1 * 1e12 * 1e18;
maxBuyAmount = totalSupply * 2 / 100;
maxSellAmount = totalSupply * 2 / 100;
maxWalletAmount = totalSupply * 2 / 100;
swapTokensAtAmount = totalSupply * 5 / 10000;
buyOperationsFee = 0;
buyLiquidityFee = 0;
buyDevFee = 0;
buyBurnFee = 0;
buyTotalFees = buyOperationsFee + buyLiquidityFee + buyDevFee + buyBurnFee;
sellOperationsFee = 0;
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 <= 10, "Must keep fees at 20% 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 <= 10, "Must keep fees at 20% or less");
}
function returnToNormalTax() external onlyOwner {
sellOperationsFee = 0;
sellLiquidityFee = 0;
sellDevFee = 0;
sellBurnFee = 0;
sellTotalFees = sellOperationsFee + sellLiquidityFee + sellDevFee + sellBurnFee;
require(sellTotalFees <= 10, "Must keep fees at 30% or less");
buyOperationsFee = 0;
buyLiquidityFee = 0;
buyDevFee = 0;
buyBurnFee = 0;
buyTotalFees = buyOperationsFee + buyLiquidityFee + buyDevFee + buyBurnFee;
require(buyTotalFees <= 10, "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);
}
}