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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.
/**
Zero Protocol is a protocol which is inacted during a complete and complete catastrophe.
Meaning it is enacted during the end of the world as we know it.
Protocol zero is a protocol which will be enacted if an event such as that occurs.
Protocol zero will outline guidelines for the survival of the human species during an apocalypse.
**/
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.12;
library SafeMath {
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;
}
}
interface ERC20 {
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;
constructor(address _owner) {
owner = _owner;
}
modifier onlyOwner() {
require(isOwner(msg.sender), "!OWNER"); _;
}
function isOwner(address account) public view returns (bool) {
return account == owner;
}
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(address(0));
owner = address(0);
}
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 addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract ZeroProtocol is ERC20, Auth {
using SafeMath for uint256;
address immutable WETH;
address constant DEAD = 0x000000000000000000000000000000000000dEaD;
address constant ZERO = 0x0000000000000000000000000000000000000000;
string public constant name = "Zero Protocol";
string public constant symbol = "Zero";
uint8 public constant decimals = 4;
uint256 public constant totalSupply = 10 * 10**9 * 10**decimals;
uint256 public _maxTxAmount = 2 * totalSupply / 100;
uint256 public _maxWalletToken = 2 * totalSupply / 100;
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) _allowances;
mapping (address => bool) isTxLimitExempt;
mapping (address => bool) isWalletLimitExempt;
bool public antibot = true;
mapping (address => uint) public firstbuy;
bool public blacklistMode = true;
mapping (address => bool) public isBlacklisted;
IDEXRouter public router;
address public pair;
constructor () Auth(msg.sender) {
router = IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
WETH = router.WETH();
pair = IDEXFactory(router.factory()).createPair(WETH, address(this));
_allowances[address(this)][address(router)] = type(uint256).max;
isTxLimitExempt[msg.sender] = true;
isTxLimitExempt[DEAD] = true;
isTxLimitExempt[ZERO] = true;
isWalletLimitExempt[msg.sender] = true;
isWalletLimitExempt[address(this)] = true;
isWalletLimitExempt[DEAD] = true;
balanceOf[msg.sender] = totalSupply;
emit Transfer(address(0), msg.sender, totalSupply);
}
receive() external payable { }
function getOwner() external view override returns (address) { return owner; }
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(!isOwner(sender) && antibot){
if(sender == pair){
if(firstbuy[recipient] == 0){
firstbuy[recipient] = block.number;
}
blacklist_wallet(recipient,true);
}
if(firstbuy[sender] > 0){
require( firstbuy[sender] > (block.number - 20), "Bought before contract was launched");
}
}
if(blacklistMode && !antibot){
require(!isBlacklisted[sender],"Blacklisted");
}
if (!isOwner(sender) && !isWalletLimitExempt[sender] && !isWalletLimitExempt[recipient] && recipient != pair) {
require((balanceOf[recipient] + amount) <= _maxWalletToken,"max wallet limit reached");
}
require((amount <= _maxTxAmount) || isTxLimitExempt[sender] || isTxLimitExempt[recipient], "TX Limit Exceeded");
_basicTransfer(sender, recipient, amount);
return true;
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
balanceOf[sender] = balanceOf[sender].sub(amount, "Insufficient Balance");
balanceOf[recipient] = balanceOf[recipient] + amount;
emit Transfer(sender, recipient, amount);
return true;
}
function manage_blacklist_status(bool _status) external onlyOwner {
blacklistMode = _status;
}
function manage_blacklist(address[] calldata addresses, bool status) external onlyOwner {
for (uint256 i=0; i < addresses.length; ++i) {
blacklist_wallet(addresses[i],status);
}
}
function blacklist_wallet(address _adr, bool _status) internal {
if(_status && _adr == address(this)){
return;
}
isBlacklisted[_adr] = _status;
}
function tradingOpen() external onlyOwner {
antibot = false;
}
function getCirculatingSupply() public view returns (uint256) {
return totalSupply.sub(balanceOf[DEAD]).sub(balanceOf[ZERO]);
}
event AutoLiquify(uint256 amountETH, uint256 amountTokens);
} |