Contract Source Code:
File 1 of 1 : virus
/*
VirusERC
You must be referred to buy!
Refer other wallets and get rewards for their every buy
Telegram: @VirusErc
*/
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.5;
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
}
interface IBEP20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function getOwner() external view returns (address);
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);
}
abstract contract Auth {
address internal owner;
mapping (address => bool) internal authorizations;
constructor(address _owner) {
owner = _owner;
authorizations[_owner] = true;
}
modifier onlyOwner() {
require(isOwner(msg.sender), "!OWNER"); _;
}
modifier authorized() {
require(isAuthorized(msg.sender), "!AUTHORIZED"); _;
}
function authorize(address adr) public onlyOwner {
authorizations[adr] = true;
}
function unauthorize(address adr) public onlyOwner {
authorizations[adr] = false;
}
function isOwner(address account) public view returns (bool) {
return account == owner;
}
function isAuthorized(address adr) public view returns (bool) {
return authorizations[adr];
}
function transferOwnership(address payable adr) public onlyOwner {
owner = adr;
authorizations[adr] = true;
emit OwnershipTransferred(adr);
}
event OwnershipTransferred(address owner);
}
interface IDEXFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IDEXRouter {
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 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 virus is IBEP20, Auth {
using SafeMath for uint256;
string constant _name = "Virus";
string constant _symbol = "VIRUS";
uint8 constant _decimals = 9;
uint256 _totalSupply = 100000000 * (10 ** _decimals);
uint256 public _maxWalletSize = (_totalSupply * 1) / 100;
uint256 public _minTransferForReferral = 1 * (10 ** _decimals);
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) _allowances;
mapping (address => bool) isFeeExempt;
mapping (address => address) public referrer;
mapping(address => bool) public isReferred;
uint256 liquidityFee = 2;
uint256 devFee = 0;
uint256 marketingFee = 6;
uint256 totalFee = 8;
uint256 feeDenominator = 100;
uint256 referralFee = 3;
uint256 public minSupplyForReferralReward = (_totalSupply * 1) / 1000;
address private marketingFeeReceiver = 0xDcA1eEDd2166Bb128594aa8C64Dbe1Fa75Bd00E1;
IDEXRouter public router;
address public pair;
bool public swapEnabled = true;
uint256 public swapThreshold = _totalSupply / 1000 * 3; // 0.3%
bool inSwap;
modifier swapping() { inSwap = true; _; inSwap = false; }
event ReferralBonus(address indexed feesTo , address indexed feesFrom , uint value);
event Referred(address indexed referred,address indexed referrer);
constructor () Auth(msg.sender) {
router = IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this));
_allowances[address(this)][address(router)] = type(uint256).max;
address _owner = owner;
isFeeExempt[_owner] = true;
isFeeExempt[pair] = true;
isFeeExempt[address(router)] = true;
isReferred[_owner] = true;
_balances[_owner] = _totalSupply;
emit Transfer(address(0), _owner, _totalSupply);
}
receive() external payable { }
function totalSupply() external view override returns (uint256) { return _totalSupply; }
function decimals() external pure override returns (uint8) { return _decimals; }
function symbol() external pure override returns (string memory) { return _symbol; }
function name() external pure override returns (string memory) { return _name; }
function getOwner() external view override returns (address) { return owner; }
function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }
function approve(address spender, uint256 amount) public override returns (bool) {
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function approveMax(address spender) external returns (bool) {
return approve(spender, type(uint256).max);
}
function transfer(address recipient, uint256 amount) external override returns (bool) {
return _transferFrom(msg.sender, recipient, amount);
}
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if(_allowances[sender][msg.sender] != type(uint256).max){
_allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
}
return _transferFrom(sender, recipient, amount);
}
function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
if(inSwap){ return _basicTransfer(sender, recipient, amount); }
if (recipient != pair) {
require(isFeeExempt[recipient] || _balances[recipient] + amount <= _maxWalletSize, "Transfer amount exceeds the bag size.");
}
uint256 amountReceived = amount;
if(sender == pair) { //buy
if(!isFeeExempt[recipient]) {
require(isReferred[recipient],"Not referred");
amountReceived = takeReferralFees(recipient,amount);
}
} else if(recipient == pair) { //sell
if(shouldTakeFee(sender)) {
amountReceived = takeFee(sender, amount);
}
} else if(isReferred[recipient]==false) {
if(amount >= _minTransferForReferral) {
isReferred[recipient] = true;
referrer[recipient] = sender;
emit Referred(recipient,sender);
}
}
if(shouldSwapBack()){ swapBack(); }
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
_balances[recipient] = _balances[recipient].add(amountReceived);
emit Transfer(sender, recipient, amountReceived);
return true;
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
return true;
}
function takeReferralFees(address from,uint256 amount) internal returns(uint) {
uint256 referralTokens = referralFee * amount / feeDenominator;
if(_balances[referrer[from]] > minSupplyForReferralReward) {
_balances[referrer[from]] = _balances[referrer[from]].add(referralTokens);
emit ReferralBonus(referrer[from],from,referralTokens);
} else {
_balances[marketingFeeReceiver] = _balances[marketingFeeReceiver].add(referralTokens);
emit ReferralBonus(marketingFeeReceiver,from,referralTokens);
}
return amount - referralTokens;
}
function shouldTakeFee(address sender) internal view returns (bool) {
return !isFeeExempt[sender];
}
function takeFee(address sender, uint256 amount) internal returns (uint256) {
uint256 feeAmount = amount.mul(totalFee).div(feeDenominator);
_balances[address(this)] = _balances[address(this)].add(feeAmount);
emit Transfer(sender, address(this), feeAmount);
return amount.sub(feeAmount);
}
function shouldSwapBack() internal view returns (bool) {
return msg.sender != pair
&& !inSwap
&& swapEnabled
&& _balances[address(this)] >= swapThreshold;
}
function swapBack() internal swapping {
uint256 contractTokenBalance = balanceOf(address(this));
uint256 amountToLiquify = contractTokenBalance.mul(liquidityFee).div(totalFee).div(2);
uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify);
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
uint256 balanceBefore = address(this).balance;
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap,
0,
path,
address(this),
block.timestamp
);
uint256 amountBNB = address(this).balance.sub(balanceBefore);
uint256 totalBNBFee = totalFee.sub(liquidityFee.div(2));
uint256 amountBNBLiquidity = amountBNB.mul(liquidityFee).div(totalBNBFee).div(2);
uint256 amountBNBMarketing = amountBNB - amountBNBLiquidity;
(bool MarketingSuccess, /* bytes memory data */) = payable(marketingFeeReceiver).call{value: amountBNBMarketing, gas: 30000}("");
require(MarketingSuccess, "receiver rejected ETH transfer");
addLiquidity(amountToLiquify, amountBNBLiquidity);
}
function addLiquidity(uint256 tokenAmount, uint256 BNBAmount) private {
if(tokenAmount > 0){
router.addLiquidityETH{value: BNBAmount}(
address(this),
tokenAmount,
0,
0,
address(this),
block.timestamp
);
emit AutoLiquify(BNBAmount, tokenAmount);
}
}
function setMaxWallet(uint256 amount) external onlyOwner() {
require(amount >= _totalSupply / 1000 );
_maxWalletSize = amount;
}
function setMinTransferForReferral(uint256 amount) external onlyOwner() {
require(amount <= 1*(10**_decimals) );
_minTransferForReferral = amount;
}
function setIsFeeExempt(address holder, bool exempt) external authorized {
isFeeExempt[holder] = exempt;
}
function setFees(uint256 _liquidityFee, uint256 _devFee, uint256 _marketingFee, uint256 _feeDenominator) external authorized {
liquidityFee = _liquidityFee;
devFee = _devFee;
marketingFee = _marketingFee;
totalFee = _liquidityFee.add(_devFee).add(_marketingFee);
feeDenominator = _feeDenominator;
}
function setSwapBackSettings(bool _enabled, uint256 _amount) external authorized {
swapEnabled = _enabled;
swapThreshold = _amount;
}
function manualSend() external authorized {
uint256 contractETHBalance = address(this).balance;
payable(marketingFeeReceiver).transfer(contractETHBalance);
}
function transferForeignToken(address _token) public authorized {
require(_token != address(this), "Can't let you take all native token");
uint256 _contractBalance = IBEP20(_token).balanceOf(address(this));
payable(marketingFeeReceiver).transfer(_contractBalance);
}
event AutoLiquify(uint256 amountBNB, uint256 amountBOG);
}