文件 1 的 1:MetaverseBrokers.sol
pragma solidity ^0.8.4;
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;
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
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 IUniswapV2Router02 {
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 MetaverseBrokers is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcludedFromAntiBot;
mapping (address => uint) private _antiBot;
mapping (address => bool) private _bots;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e9 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 public _reflectionFee = 1;
uint256 public _tokensBuyFee = 12;
uint256 public _maxTokensBuyFee = 12;
uint256 public _tokensSellFee = 12;
uint256 private _swapThreshold;
uint256 private _swapAmountMax;
address payable private _treasuryWallet;
address payable private _teamWallet;
string private constant _name = "MetaverseBrokers";
string private constant _symbol = "$MEBRO";
uint8 private constant _decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
uint private tradingOpenTime;
bool private inSwap = false;
bool private swapEnabled = false;
uint256 private _maxWalletAmount = _tTotal;
event TreasuryWalletUpdated(address wallet);
event TeamWalletUpdated(address wallet);
event MaxWalletAmountRemoved();
event SwapThresholdUpdated(uint _swapThreshold);
event SwapAmountMaxUpdated(uint _swapAmountMax);
event BuyFeeUpdated(uint _tokensBuyFee);
event ExcludedFromFees(address _account, bool _excluded);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_treasuryWallet = payable(0x22B44C1D42239a4d0CF67C2f83ccaa869Ed20235);
_teamWallet = payable(0xEA70D22a56bC8bA6fc6F3B28D542303225C160CB);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_treasuryWallet] = true;
_isExcludedFromFee[_teamWallet] = true;
_isExcludedFromAntiBot[owner()] = true;
_isExcludedFromAntiBot[address(this)] = true;
emit Transfer(address(0x0000000000000000000000000000000000000000), _msgSender(), _tTotal);
}
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 _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
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 updateTreasuryWallet(address payable account) external onlyOwner() {
_treasuryWallet = account;
excludeFromFee(account, true);
excludeFromAntiBot(account);
emit TreasuryWalletUpdated(account);
}
function updateTeamWallet(address payable account) external onlyOwner() {
_teamWallet = account;
excludeFromFee(account, true);
excludeFromAntiBot(account);
emit TeamWalletUpdated(account);
}
function setSwapThreshold(uint256 swapThreshold) external onlyOwner() {
_swapThreshold = swapThreshold;
emit SwapThresholdUpdated(swapThreshold);
}
function setSwapAmountMax(uint256 swapAmountMax) external onlyOwner() {
_swapAmountMax = swapAmountMax;
emit SwapAmountMaxUpdated(swapAmountMax);
}
function setNewBuyFee(uint256 newBuyFee) external onlyOwner() {
require(newBuyFee <= _maxTokensBuyFee, "Buy fee cannot be that large");
_tokensBuyFee = newBuyFee;
emit BuyFeeUpdated(newBuyFee);
}
function excludeFromFee(address account, bool excluded) public onlyOwner() {
_isExcludedFromFee[account] = excluded;
emit ExcludedFromFees(account, excluded);
}
function excludeFromAntiBot(address account) public onlyOwner() {
_isExcludedFromAntiBot[account] = true;
}
function tokenFromReflection(uint256 rAmount) private view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
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 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 != owner() && to != owner()) {
require(!_bots[from] && !_bots[to]);
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!_isExcludedFromFee[to]
) {
require(balanceOf(to) + amount <= _maxWalletAmount);
if(!_isExcludedFromAntiBot[to] && _antiBot[to] == 0) {
uint elapsed = block.timestamp - tradingOpenTime;
if(elapsed < 30) {
uint256 duration = (30 - elapsed) * 240;
_antiBot[to] = block.timestamp + duration;
}
}
}
uint256 swapAmount = balanceOf(address(this));
if(swapAmount > _swapAmountMax) {
swapAmount = _swapAmountMax;
}
if (swapAmount > _swapThreshold &&
!inSwap &&
from != uniswapV2Pair &&
swapEnabled) {
swapTokensForEth(swapAmount);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHTreasuryAndTeam(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
function swapTokensForEth(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 sendETHTreasuryAndTeam(uint256 amount) private {
uint256 treasury = amount * 10 / 12;
uint256 team = amount - treasury;
_treasuryWallet.transfer(treasury);
_teamWallet.transfer(team);
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
IUniswapV2Router02 _uniswapV2Router =
IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromAntiBot[address(uniswapV2Router)] = true;
_isExcludedFromAntiBot[address(uniswapV2Pair)] = true;
_isExcludedFromFee[address(uniswapV2Router)] = true;
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
_maxWalletAmount = 1e7 * 10**9;
tradingOpen = true;
tradingOpenTime = block.timestamp;
_swapThreshold = 1e6 * 10**9;
_swapAmountMax = 3e6 * 10**9;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function setBots(address[] memory bots) public onlyOwner {
require(block.timestamp < tradingOpenTime + (1 days / 2), "Cannot set bots anymore");
for (uint i = 0; i < bots.length; i++) {
_bots[bots[i]] = true;
}
}
function removeStrictWalletLimit() public onlyOwner {
_maxWalletAmount = 1e9 * 10**9;
emit MaxWalletAmountRemoved();
}
function delBot(address notbot) public onlyOwner {
_bots[notbot] = false;
}
function _tokenTransfer(address sender, address recipient, uint256 amount) private {
_transferStandard(sender, recipient, amount);
}
function _calculateFee(uint256 fee, address sender, address recipient) private view returns (uint256) {
if(!tradingOpen || inSwap) {
return 0;
}
if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient]) {
return 0;
}
return fee;
}
function _calculateReflectionFee(address sender, address recipient) private view returns (uint256) {
if(sender == uniswapV2Pair && _tokensBuyFee == 0) {
return _calculateFee(0, sender, recipient);
}
return _calculateFee(_reflectionFee, sender, recipient);
}
function _calculateTokenFee(address sender, address recipient) private view returns (uint256) {
if(sender == uniswapV2Pair) {
return _calculateFee(_tokensBuyFee, sender, recipient);
}
return _calculateFee(_tokensSellFee, sender, recipient);
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getValues(tAmount, _calculateReflectionFee(sender, recipient), _calculateTokenFee(sender, recipient));
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function manualSwap() public {
require(_msgSender() == _teamWallet);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualSend() public {
require(_msgSender() == _teamWallet);
uint256 contractETHBalance = address(this).balance;
sendETHTreasuryAndTeam(contractETHBalance);
}
function manualSwapAndSend() external {
manualSwap();
manualSend();
}
function _getValues(uint256 tAmount, uint256 reflectionFee, uint256 tokenFee) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getTValues(tAmount, reflectionFee, tokenFee);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
_getRValues(tAmount, tFee, tTeam, _getRate());
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
}