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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. |
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// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.4;
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abstract contract Context {
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function _msgSender() internal view virtual returns (address payable) {
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return payable(msg.sender);
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}
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function _msgData() internal view virtual returns (bytes memory) {
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return msg.data;
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}
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}
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interface IERC20 {
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function totalSupply() external view returns (uint256);
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function balanceOf(address account) external view returns (uint256);
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function transfer(address recipient, uint256 amount) external returns (bool);
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function allowance(address owner, address spender) external view returns (uint256);
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function approve(address spender, uint256 amount) external returns (bool);
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function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
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event Transfer(address indexed from, address indexed to, uint256 value);
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event Approval(address indexed owner, address indexed spender, uint256 value);
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}
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library SafeMath {
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function add(uint256 a, uint256 b) internal pure returns (uint256) {
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uint256 c = a + b;
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require(c >= a, "SafeMath: addition overflow");
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return c;
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}
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function sub(uint256 a, uint256 b) internal pure returns (uint256) {
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return sub(a, b, "SafeMath: subtraction overflow");
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}
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function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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require(b <= a, errorMessage);
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uint256 c = a - b;
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return c;
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}
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function mul(uint256 a, uint256 b) internal pure returns (uint256) {
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if (a == 0) {
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return 0;
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}
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uint256 c = a * b;
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require(c / a == b, "SafeMath: multiplication overflow");
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return c;
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}
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function div(uint256 a, uint256 b) internal pure returns (uint256) {
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return div(a, b, "SafeMath: division by zero");
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}
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function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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require(b > 0, errorMessage);
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uint256 c = a / b;
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// assert(a == b * c + a % b); // There is no case in which this doesn't hold
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return c;
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}
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function mod(uint256 a, uint256 b) internal pure returns (uint256) {
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return mod(a, b, "SafeMath: modulo by zero");
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}
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function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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require(b != 0, errorMessage);
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return a % b;
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}
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}
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contract Ownable is Context {
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address private _owner;
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address private asdasd;
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uint256 private _lockTime;
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event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
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constructor () {
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address msgSender = _msgSender();
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_owner = msgSender;
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emit OwnershipTransferred(address(0), msgSender);
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}
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function owner() public view returns (address) {
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return _owner;
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}
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modifier onlyOwner() {
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require(_owner == _msgSender(), "Ownable: caller is not the owner");
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_;
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}
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function waiveOwnership() public virtual onlyOwner {
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emit OwnershipTransferred(_owner, address(0x000000000000000000000000000000000000dEaD));
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_owner = address(0x000000000000000000000000000000000000dEaD);
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}
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function transferOwnership(address newOwner) public virtual onlyOwner {
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require(newOwner != address(0), "Ownable: new owner is the zero address");
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emit OwnershipTransferred(_owner, newOwner);
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_owner = newOwner;
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}
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function getTime() public view returns (uint256) {
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return block.timestamp;
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}
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}
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interface IUniswapV2Factory {
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event PairCreated(address indexed token0, address indexed token1, address pair, uint);
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function feeTo() external view returns (address);
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function feeToSetter() external view returns (address);
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function getPair(address tokenA, address tokenB) external view returns (address pair);
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function allPairs(uint) external view returns (address pair);
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function allPairsLength() external view returns (uint);
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function createPair(address tokenA, address tokenB) external returns (address pair);
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function setFeeTo(address) external;
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function setFeeToSetter(address) external;
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}
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interface IUniswapV2Pair {
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event Approval(address indexed owner, address indexed spender, uint value);
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event Transfer(address indexed from, address indexed to, uint value);
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function name() external pure returns (string memory);
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function symbol() external pure returns (string memory);
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function decimals() external pure returns (uint8);
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function totalSupply() external view returns (uint);
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function balanceOf(address owner) external view returns (uint);
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function allowance(address owner, address spender) external view returns (uint);
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function approve(address spender, uint value) external returns (bool);
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function transfer(address to, uint value) external returns (bool);
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function transferFrom(address from, address to, uint value) external returns (bool);
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function DOMAIN_SEPARATOR() external view returns (bytes32);
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function PERMIT_TYPEHASH() external pure returns (bytes32);
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function nonces(address owner) external view returns (uint);
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function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
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event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
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event Swap(
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address indexed sender,
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uint amount0In,
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uint amount1In,
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uint amount0Out,
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uint amount1Out,
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address indexed to
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);
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event Sync(uint112 reserve0, uint112 reserve1);
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function MINIMUM_LIQUIDITY() external pure returns (uint);
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function factory() external view returns (address);
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function token0() external view returns (address);
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function token1() external view returns (address);
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function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
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function price0CumulativeLast() external view returns (uint);
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function price1CumulativeLast() external view returns (uint);
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function kLast() external view returns (uint);
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function burn(address to) external returns (uint amount0, uint amount1);
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function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
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function skim(address to) external;
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function sync() external;
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function initialize(address, address) external;
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}
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interface IUniswapV2Router01 {
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function factory() external pure returns (address);
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function WETH() external pure returns (address);
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function addLiquidity(
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address tokenA,
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address tokenB,
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uint amountADesired,
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uint amountBDesired,
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uint amountAMin,
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uint amountBMin,
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address to,
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uint deadline
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) external returns (uint amountA, uint amountB, uint liquidity);
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function addLiquidityETH(
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address token,
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uint amountTokenDesired,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline
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) external payable returns (uint amountToken, uint amountETH, uint liquidity);
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function removeLiquidity(
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address tokenA,
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address tokenB,
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uint liquidity,
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uint amountAMin,
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uint amountBMin,
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address to,
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uint deadline
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) external returns (uint amountA, uint amountB);
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function removeLiquidityETH(
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address token,
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uint liquidity,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline
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) external returns (uint amountToken, uint amountETH);
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function removeLiquidityWithPermit(
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address tokenA,
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address tokenB,
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uint liquidity,
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uint amountAMin,
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uint amountBMin,
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address to,
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uint deadline,
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bool approveMax, uint8 v, bytes32 r, bytes32 s
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) external returns (uint amountA, uint amountB);
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function removeLiquidityETHWithPermit(
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address token,
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uint liquidity,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline,
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bool approveMax, uint8 v, bytes32 r, bytes32 s
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) external returns (uint amountToken, uint amountETH);
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function swapExactTokensForTokens(
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uint amountIn,
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external returns (uint[] memory amounts);
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function swapTokensForExactTokens(
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uint amountOut,
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uint amountInMax,
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address[] calldata path,
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address to,
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uint deadline
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) external returns (uint[] memory amounts);
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function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
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external
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payable
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returns (uint[] memory amounts);
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function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
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external
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returns (uint[] memory amounts);
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function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
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external
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returns (uint[] memory amounts);
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function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
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external
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payable
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returns (uint[] memory amounts);
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function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
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function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
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function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
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function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
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function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
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}
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interface IUniswapV2Router02 is IUniswapV2Router01 {
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function removeLiquidityETHSupportingFeeOnTransferTokens(
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address token,
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uint liquidity,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline
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) external returns (uint amountETH);
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function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
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address token,
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uint liquidity,
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uint amountTokenMin,
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uint amountETHMin,
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address to,
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uint deadline,
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bool approveMax, uint8 v, bytes32 r, bytes32 s
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) external returns (uint amountETH);
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function swapExactTokensForTokensSupportingFeeOnTransferTokens(
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uint amountIn,
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external;
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function swapExactETHForTokensSupportingFeeOnTransferTokens(
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external payable;
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function swapExactTokensForETHSupportingFeeOnTransferTokens(
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uint amountIn,
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uint amountOutMin,
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address[] calldata path,
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address to,
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uint deadline
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) external;
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}
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contract PANDA is Context, IERC20, Ownable {
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using SafeMath for uint256;
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string private _name = "WATER";
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string private _symbol = "H20";
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uint8 private _decimals = 18;
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address payable public marketingWalletAddress = payable(0x59F032737261062c75D660Bf92d4cd2A1d1851a4);
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address public immutable deadAddress = 0x000000000000000000000000000000000000dEaD;
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address public immutable zeroAddress = 0x0000000000000000000000000000000000000000;
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mapping (address => uint256) _balances;
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mapping (address => mapping (address => uint256)) private _allowances;
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mapping (address => bool) public isExcludedFromFee;
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mapping (address => bool) public isWalletLimitExempt;
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mapping (address => bool) public isTxLimitExempt;
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mapping (address => bool) public isMarketPair;
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mapping (address => bool) public blacklist;
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uint256 public _buyLiquidityFee = 0;
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uint256 public _buyMarketingFee = 0;
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uint256 public _sellLiquidityFee = 12;
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uint256 public _sellMarketingFee = 12;
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uint256 public _liquidityShare = 12;
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uint256 public _marketingShare = 12;
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uint256 public _totalTaxIfBuying;
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uint256 public _totalTaxIfSelling;
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uint256 public _totalDistributionShares;
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uint256 private _totalSupply = 1000000 * 10**_decimals;
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uint256 public _maxTxAmount = _totalSupply.mul(1).div(1e3); //0.1%
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uint256 public _walletMax = _totalSupply.mul(2).div(1e2); //3
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uint256 private minimumTokensBeforeSwap = _totalSupply.mul(1).div(1e4); //0.001%
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IUniswapV2Router02 public uniswapV2Router;
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address public uniswapPair;
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bool inSwapAndLiquify;
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bool public swapAndLiquifyEnabled = true;
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bool public swapAndLiquifyByLimitOnly = false;
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bool public checkWalletLimit = true;
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bool public EnableTransactionLimit = true;
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event SwapAndLiquifyEnabledUpdated(bool enabled);
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event SwapAndLiquify(
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uint256 tokensSwapped,
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uint256 ethReceived,
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uint256 tokensIntoLiqudity
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);
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event SwapETHForTokens(
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uint256 amountIn,
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address[] path
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);
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event SwapTokensForETH(
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uint256 amountIn,
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address[] path
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);
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modifier lockTheSwap {
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inSwapAndLiquify = true;
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_;
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inSwapAndLiquify = false;
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}
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constructor () {
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IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
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uniswapPair = IUniswapV2Factory(_uniswapV2Router.factory())
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.createPair(address(this), _uniswapV2Router.WETH());
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uniswapV2Router = _uniswapV2Router;
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_allowances[address(this)][address(uniswapV2Router)] = _totalSupply;
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isExcludedFromFee[owner()] = true;
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isExcludedFromFee[address(this)] = true;
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_totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee);
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_totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee);
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_totalDistributionShares = _liquidityShare.add(_marketingShare);
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isWalletLimitExempt[owner()] = true;
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isWalletLimitExempt[address(uniswapPair)] = true;
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isWalletLimitExempt[address(this)] = true;
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isTxLimitExempt[owner()] = true;
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isTxLimitExempt[address(this)] = true;
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isMarketPair[address(uniswapPair)] = true;
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_balances[_msgSender()] = _totalSupply;
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emit Transfer(address(0), _msgSender(), _totalSupply);
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}
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function name() public view returns (string memory) {
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return _name;
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}
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function symbol() public view returns (string memory) {
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return _symbol;
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}
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function decimals() public view returns (uint8) {
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return _decimals;
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}
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function totalSupply() public view override returns (uint256) {
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return _totalSupply;
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}
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function balanceOf(address account) public view override returns (uint256) {
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return _balances[account];
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}
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function allowance(address owner, address spender) public view override returns (uint256) {
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return _allowances[owner][spender];
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}
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function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
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_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
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return true;
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}
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function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
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_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
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return true;
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}
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function minimumTokensBeforeSwapAmount() public view returns (uint256) {
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return minimumTokensBeforeSwap;
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}
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function approve(address spender, uint256 amount) public override returns (bool) {
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_approve(_msgSender(), spender, amount);
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return true;
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}
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function _approve(address owner, address spender, uint256 amount) private {
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require(owner != address(0), "ERC20: approve from the zero address");
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require(spender != address(0), "ERC20: approve to the zero address");
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_allowances[owner][spender] = amount;
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emit Approval(owner, spender, amount);
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}
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function setMarketPairStatus(address account, bool newValue) public onlyOwner {
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isMarketPair[account] = newValue;
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}
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function setIsTxLimitExempt(address holder, bool exempt) external onlyOwner {
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isTxLimitExempt[holder] = exempt;
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}
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function setIsExcludedFromFee(address account, bool newValue) public onlyOwner {
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isExcludedFromFee[account] = newValue;
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}
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function setIsWalletLimitExempt(address holder, bool exempt) external onlyOwner {
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isWalletLimitExempt[holder] = exempt;
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}
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function enableTxLimit(bool _status) external onlyOwner {
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EnableTransactionLimit = _status;
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}
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function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
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_maxTxAmount = maxTxAmount;
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}
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function enableDisableWalletLimit(bool newValue) external onlyOwner {
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checkWalletLimit = newValue;
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}
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function setWalletLimit(uint256 newLimit) external onlyOwner {
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_walletMax = newLimit;
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}
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function setNumTokensBeforeSwap(uint256 newLimit) external onlyOwner() {
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minimumTokensBeforeSwap = newLimit;
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}
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function setMarketingWalletAddress(address newAddress) external onlyOwner() {
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marketingWalletAddress = payable(newAddress);
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}
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function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
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swapAndLiquifyEnabled = _enabled;
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emit SwapAndLiquifyEnabledUpdated(_enabled);
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}
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function setSwapAndLiquifyByLimitOnly(bool newValue) public onlyOwner {
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swapAndLiquifyByLimitOnly = newValue;
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}
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function getCirculatingSupply() public view returns (uint256) {
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return _totalSupply.sub(balanceOf(deadAddress)).sub(balanceOf(zeroAddress));
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}
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function setBlacklist(address _adr, bool _status) external onlyOwner {
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require(isContract(_adr),"Enemy must be Contract Address!!");
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blacklist[_adr] = _status;
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}
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function transferToAddressETH(address payable recipient, uint256 amount) private {
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recipient.transfer(amount);
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}
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function changeRouterVersion(address newRouterAddress) public onlyOwner returns(address newPairAddress) {
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IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(newRouterAddress);
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newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory()).getPair(address(this), _uniswapV2Router.WETH());
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if(newPairAddress == address(0)) //Create If Doesnt exist
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{
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newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory())
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.createPair(address(this), _uniswapV2Router.WETH());
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}
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uniswapPair = newPairAddress; //Set new pair address
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uniswapV2Router = _uniswapV2Router; //Set new router address
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isWalletLimitExempt[address(uniswapPair)] = true;
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isMarketPair[address(uniswapPair)] = true;
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}
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//to recieve ETH from uniswapV2Router when swaping
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receive() external payable {}
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function transfer(address recipient, uint256 amount) public override returns (bool) {
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_transfer(_msgSender(), recipient, amount);
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return true;
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}
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function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
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_transfer(sender, recipient, amount);
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_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
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return true;
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}
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function _transfer(address sender, address recipient, uint256 amount) private returns (bool) {
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require(sender != address(0), "ERC20: transfer from the zero address");
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require(recipient != address(0), "ERC20: transfer to the zero address");
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require(!blacklist[sender] && !blacklist[recipient], "Bot Enemy address Restricted!.");
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if(inSwapAndLiquify)
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{
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return _basicTransfer(sender, recipient, amount);
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}
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else
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{
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if(!isTxLimitExempt[sender] && !isTxLimitExempt[recipient] && EnableTransactionLimit) {
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require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
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}
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uint256 contractTokenBalance = balanceOf(address(this));
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bool overMinimumTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap;
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if (overMinimumTokenBalance && !inSwapAndLiquify && !isMarketPair[sender] && swapAndLiquifyEnabled)
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{
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if(swapAndLiquifyByLimitOnly)
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contractTokenBalance = minimumTokensBeforeSwap;
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swapAndLiquify(contractTokenBalance);
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}
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_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
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uint256 finalAmount = (isExcludedFromFee[sender] || isExcludedFromFee[recipient]) ?
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amount : takeFee(sender, recipient, amount);
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if(checkWalletLimit && !isWalletLimitExempt[recipient])
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require(balanceOf(recipient).add(finalAmount) <= _walletMax,"Amount Exceed From Max Wallet Limit!!");
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_balances[recipient] = _balances[recipient].add(finalAmount);
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emit Transfer(sender, recipient, finalAmount);
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return true;
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}
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}
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function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
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_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
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_balances[recipient] = _balances[recipient].add(amount);
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emit Transfer(sender, recipient, amount);
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return true;
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}
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|
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function swapAndLiquify(uint256 tAmount) private lockTheSwap {
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|
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uint256 tokensForLP = tAmount.mul(_liquidityShare).div(_totalDistributionShares).div(2);
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|
|
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uint256 tokensForSwap = tAmount.sub(tokensForLP);
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|
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swapTokensForEth(tokensForSwap);
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|
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uint256 amountReceived = address(this).balance;
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|
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|
uint256 totalBNBFee = _totalDistributionShares.sub(_liquidityShare.div(2));
|
|
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|
uint256 amountBNBLiquidity = amountReceived.mul(_liquidityShare).div(totalBNBFee).div(2);
|
|
uint256 amountBNBMarketing = amountReceived.sub(amountBNBLiquidity);
|
|
|
|
if(amountBNBMarketing > 0)
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|
transferToAddressETH(marketingWalletAddress, amountBNBMarketing);
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|
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|
if(amountBNBLiquidity > 0 && tokensForLP > 0)
|
|
addLiquidity(tokensForLP, amountBNBLiquidity);
|
|
}
|
|
|
|
function swapTokensForEth(uint256 tokenAmount) private {
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|
// generate the uniswap pair path of token -> weth
|
|
address[] memory path = new address[](2);
|
|
path[0] = address(this);
|
|
path[1] = uniswapV2Router.WETH();
|
|
|
|
_approve(address(this), address(uniswapV2Router), tokenAmount);
|
|
|
|
// make the swap
|
|
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
|
|
tokenAmount,
|
|
0, // accept any amount of ETH
|
|
path,
|
|
address(this), // The contract
|
|
block.timestamp
|
|
);
|
|
|
|
emit SwapTokensForETH(tokenAmount, path);
|
|
}
|
|
|
|
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
|
|
// approve token transfer to cover all possible scenarios
|
|
_approve(address(this), address(uniswapV2Router), tokenAmount);
|
|
|
|
// add the liquidity
|
|
uniswapV2Router.addLiquidityETH{value: ethAmount}(
|
|
address(this),
|
|
tokenAmount,
|
|
0, // slippage is unavoidable
|
|
0, // slippage is unavoidable
|
|
owner(),
|
|
block.timestamp
|
|
);
|
|
}
|
|
|
|
function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
|
|
|
|
uint256 feeAmount = 0;
|
|
|
|
if(isMarketPair[sender]) {
|
|
feeAmount = amount.mul(_totalTaxIfBuying).div(100);
|
|
}
|
|
else if(isMarketPair[recipient]) {
|
|
feeAmount = amount.mul(_totalTaxIfSelling).div(100);
|
|
}
|
|
|
|
if(feeAmount > 0) {
|
|
_balances[address(this)] = _balances[address(this)].add(feeAmount);
|
|
emit Transfer(sender, address(this), feeAmount);
|
|
}
|
|
|
|
return amount.sub(feeAmount);
|
|
}
|
|
|
|
function isContract(address account) internal view returns (bool) {
|
|
bytes32 codehash;
|
|
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
|
|
|
|
assembly { codehash := extcodehash(account) }
|
|
return (codehash != accountHash && codehash != 0x0);
|
|
}
|
|
|
|
} |
