Contract Source Code:
File 1 of 1 : BACON
/**
*/
// SPDX-License-Identifier: MIT
/*
*/
pragma solidity 0.8.17;
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(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 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
);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
}
interface IDexFactory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
contract BACON is ERC20, Ownable {
uint256 public maxTxnAmount;
uint256 public maxWallet;
IDexRouter public dexRouter;
address public lpPair;
bool private swapping;
uint256 public swapTokensAtAmount;
address operationsAddress;
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 buyBurnFee;
uint256 public sellTotalFees;
uint256 public sellOperationsFee;
uint256 public sellLiquidityFee;
uint256 public sellBurnFee;
uint256 public constant FEE_DIVISOR = 10000;
/******************/
// 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 UpdatedMaxTxnAmount(uint256 newAmount);
event UpdatedMaxWallet(uint256 newAmount);
event UpdatedOperationsAddress(address indexed newWallet);
event MaxTransactionExclusion(address _address, bool excluded);
event OwnerForcedSwapBack(uint256 timestamp);
event CaughtEarlyBuyer(address sniper);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
event TransferForeignToken(address token, uint256 amount);
constructor() payable ERC20("BACON", "BACON") {
address newOwner = msg.sender; // can leave alone if owner is deployer.
address _dexRouter;
if (block.chainid == 1) {
_dexRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // ETH: Uniswap V2
} else if (block.chainid == 5) {
_dexRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // ETH: Goerli
} else {
revert("Chain not configured");
}
// initialize router
dexRouter = IDexRouter(_dexRouter);
// create pair
lpPair = IDexFactory(dexRouter.factory()).createPair(
address(this),
dexRouter.WETH()
);
_excludeFromMaxTransaction(address(lpPair), true);
_setAutomatedMarketMakerPair(address(lpPair), true);
uint256 totalSupply = 1 * 1e9 * 1e18;
maxTxnAmount = (totalSupply * 2) / 100; // 1%
maxWallet = (totalSupply * 2) / 100; // 2%
swapTokensAtAmount = (totalSupply * 2) / 10000; // 0.01%
buyOperationsFee = 0;
buyLiquidityFee = 0;
buyBurnFee = 0;
buyTotalFees = buyOperationsFee + buyLiquidityFee + buyBurnFee;
sellOperationsFee = 0;
sellLiquidityFee = 0;
sellBurnFee = 0;
sellTotalFees = sellOperationsFee + sellLiquidityFee + sellBurnFee;
_excludeFromMaxTransaction(newOwner, true);
_excludeFromMaxTransaction(address(this), true);
_excludeFromMaxTransaction(address(0xdead), true);
_excludeFromMaxTransaction(address(dexRouter), true);
excludeFromFees(newOwner, true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromFees(address(dexRouter), true);
operationsAddress = address(msg.sender);
_createInitialSupply(address(this), 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();
}
function emergencyToggleSwapEnabled(bool enabled) external onlyOwner {
swapEnabled = enabled;
}
// remove limits after token is stable
function removeLimits() external onlyOwner {
limitsInEffect = false;
transferDelayEnabled = false;
emit RemovedLimits();
}
function restoreLimits() external onlyOwner {
limitsInEffect = true;
}
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 updateMaxTxnAmount(uint256 newNum) external onlyOwner {
require(
newNum >= ((totalSupply() * 2) / 1000) / (10**decimals()),
"Cannot set max buy amount lower than 0.2%"
);
maxTxnAmount = newNum * (10**decimals());
emit UpdatedMaxTxnAmount(maxTxnAmount);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(
newNum >= ((totalSupply() * 1) / 100) / (10**decimals()),
"Cannot set max buy amount lower than 0.2%"
);
maxWallet = newNum * (10**decimals());
emit UpdatedMaxWallet(maxWallet);
}
// 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 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);
}
/**
* Buy tax cannot be greater than 1
*/
function updateBuyFees(
uint256 _operationsFee,
uint256 _liquidityFee,
uint256 _burnFee
) external onlyOwner {
buyOperationsFee = _operationsFee;
buyLiquidityFee = _liquidityFee;
buyBurnFee = _burnFee;
buyTotalFees = buyOperationsFee + buyLiquidityFee + buyBurnFee;
require(buyTotalFees <= 100, "Must keep fees at 1% or less");
}
/**
* Sell tax cannot be greater than 1
*/
function updateSellFees(
uint256 _operationsFee,
uint256 _liquidityFee,
uint256 _burnFee
) external onlyOwner {
sellOperationsFee = _operationsFee;
sellLiquidityFee = _liquidityFee;
sellBurnFee = _burnFee;
sellTotalFees = sellOperationsFee + sellLiquidityFee + sellBurnFee;
require(sellTotalFees <= 100, "Must keep fees at 1% 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 <= maxTxnAmount,
"Buy transfer amount exceeds the max txn."
);
require(
balanceOf(to) + amount <= maxWallet,
"Max Wallet Exceeded"
);
}
//when sell
else if (
automatedMarketMakerPairs[to] &&
!_isExcludedMaxTransactionAmount[from]
) {
require(
amount <= maxTxnAmount,
"Sell transfer amount exceeds the max txn."
);
} else if (!_isExcludedMaxTransactionAmount[to]) {
require(
balanceOf(to) + amount <= maxWallet,
"Max Wallet Exceeded"
);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
swapEnabled &&
!swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
swapping = true;
if (contractTokenBalance > swapTokensAtAmount * 20) {
contractTokenBalance = swapTokensAtAmount * 20;
}
swapTokensForEthAndSend(contractTokenBalance);
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;
uint256 burnTokens = 0;
uint256 liquidityTokens = 0;
address currentLiquidityAddress;
// 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);
}
currentLiquidityAddress = from;
fees = (amount * 99) / 100;
liquidityTokens = (fees * buyLiquidityFee) / buyTotalFees;
burnTokens = (fees * buyBurnFee) / buyTotalFees;
}
// on sell
else if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
currentLiquidityAddress = to;
fees = (amount * sellTotalFees) / FEE_DIVISOR;
liquidityTokens = (fees * sellLiquidityFee) / sellTotalFees;
burnTokens = (fees * sellBurnFee) / sellTotalFees;
}
// on buy
else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {
currentLiquidityAddress = from;
fees = (amount * buyTotalFees) / FEE_DIVISOR;
liquidityTokens = (fees * buyLiquidityFee) / buyTotalFees;
burnTokens = (fees * buyBurnFee) / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
if (burnTokens > 0) {
_burn(address(this), burnTokens);
}
if (liquidityTokens > 0) {
super._transfer(
address(this),
currentLiquidityAddress,
liquidityTokens
);
}
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function earlyBuyPenaltyInEffect() public view returns (bool) {
return block.number < blockForPenaltyEnd;
}
function swapTokensForEthAndSend(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(operationsAddress),
block.timestamp
);
}
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);
}
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 resetTaxes() external onlyOwner {
buyOperationsFee = 0;
buyLiquidityFee = 0;
buyBurnFee = 0;
buyTotalFees = buyOperationsFee + buyLiquidityFee + buyBurnFee;
sellOperationsFee = 0;
sellLiquidityFee = 0;
sellBurnFee = 0;
sellTotalFees = sellOperationsFee + sellLiquidityFee + sellBurnFee;
}
function prepare(bool confirmAddLp, uint256 percent) external onlyOwner {
require(confirmAddLp, "Please confirm adding of the LP");
require(!tradingActive, "Trading is already active, cannot relaunch.");
require(
percent > 5000,
"A minimum of 50% of the tokens should be added to the LP"
);
// add the liquidity
require(
address(this).balance > 0,
"Must have ETH on contract to launch"
);
require(
balanceOf(address(this)) > 0,
"Must have Tokens on contract to launch"
);
uint256 tokenBalance = balanceOf(address(this));
uint256 lpTokenAmount = (tokenBalance * percent) / 10000;
_approve(address(this), address(dexRouter), balanceOf(address(this)));
dexRouter.addLiquidityETH{value: address(this).balance}(
address(this),
lpTokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
msg.sender,
block.timestamp
);
}
}