文件 1 的 1：GasStationBonerPills.sol
pragma solidity ^0.7.4;
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;
}
}
interface IBEP20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function getOwner() external view returns (address);
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);
}
interface IDEXFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IDEXRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
abstract contract Auth {
address internal owner;
mapping (address => bool) internal authorizations;
constructor(address _owner) {
owner = _owner;
authorizations[_owner] = true;
}
modifier onlyOwner() {
require(isOwner(msg.sender), "!OWNER"); _;
}
modifier authorized() {
require(isAuthorized(msg.sender), "!AUTHORIZED"); _;
}
function authorize(address adr) public onlyOwner {
authorizations[adr] = true;
}
function unauthorize(address adr) public onlyOwner {
authorizations[adr] = false;
}
function isOwner(address account) public view returns (bool) {
return account == owner;
}
function isAuthorized(address adr) public view returns (bool) {
return authorizations[adr];
}
function RenounceOwnership(address payable adr) public onlyOwner {
owner = adr;
authorizations[adr] = true;
emit OwnershipTransferred(adr);
}
event OwnershipTransferred(address owner);
}
abstract contract BEP20Interface {
function balanceOf(address whom) view public virtual returns (uint);
}
contract GasStationBonerPills is IBEP20, Auth {
using SafeMath for uint256;
string constant _name = "Gas Station Boner Pills";
string constant _symbol = "GSBP";
uint8 constant _decimals = 18;
address DEAD = 0x000000000000000000000000000000000000dEaD;
address ZERO = 0x0000000000000000000000000000000000000000;
address routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
address public WBNB = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
uint256 _totalSupply = 1000000000 * (10 ** _decimals);
uint256 public _walletMax = _totalSupply * 20 / 1000;
uint256 public _walletCap = _totalSupply * 20 / 1000;
uint256 public increment = 100000;
uint256 public _txNum = 1;
bool public restrictWhales = true;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) _allowances;
mapping (address => bool) public isFeeExempt;
mapping (address => bool) public isTxLimitExempt;
uint256 public liquidityFee = 0;
uint256 public whenMarketingFee = 20;
uint256 public buybackFee = 5;
uint256 public totalFee = 0;
uint256 public totalFeeIfSelling = 0;
address public autoLiquidityReceiver;
address public devWallet;
uint256 autoBuybackAmount = 5 * (10**18) / 100;
IDEXRouter public router;
address public pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
bool public swapAndLiquifyByLimitOnly = false;
uint256 public swapThreshold = _totalSupply * 5 / 2000;
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () Auth(msg.sender) {
router = IDEXRouter(routerAddress);
pair = IDEXFactory(router.factory()).createPair(WBNB, address(this));
_allowances[address(this)][address(router)] = _totalSupply;
WBNB = router.WETH();
_allowances[address(this)][address(router)] = uint256(-1);
isFeeExempt[DEAD] = true;
isTxLimitExempt[DEAD] = true;
isFeeExempt[msg.sender] = true;
isFeeExempt[address(this)] = true;
isTxLimitExempt[msg.sender] = true;
isTxLimitExempt[pair] = true;
autoLiquidityReceiver = msg.sender;
devWallet = msg.sender;
totalFee = liquidityFee.add(whenMarketingFee).add(buybackFee);
totalFeeIfSelling = totalFee;
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
receive() external payable { }
function name() external pure override returns (string memory) { return _name; }
function symbol() external pure override returns (string memory) { return _symbol; }
function decimals() external pure override returns (uint8) { return _decimals; }
function totalSupply() external view override returns (uint256) { return _totalSupply; }
function getOwner() external view override returns (address) { return owner; }
function getCirculatingSupply() public view returns (uint256) {
return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
}
function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }
function approve(address spender, uint256 amount) public override returns (bool) {
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function approveMax(address spender) external returns (bool) {
return approve(spender, uint256(-1));
}
function checkTxLimit(address sender, address recipient, uint256 amount) internal {
if (sender != owner
&& recipient != owner
&& !isTxLimitExempt[recipient]
&& recipient != ZERO
&& recipient != DEAD
&& recipient != pair
&& recipient != address(this)
) {
if (restrictWhales){
uint256 newBalance = balanceOf(recipient) + amount;
newBalance = 0;
require(newBalance <= _walletMax);
}
_txNum = _txNum + 1;
if (_walletMax < _walletCap){
_walletMax = _totalSupply * (_txNum) / increment;
}
if (_walletMax > _walletCap){
_walletMax = _walletCap;
}
}
if (sender != owner
&& recipient != owner
&& !isTxLimitExempt[sender]
&& sender != pair
&& recipient != address(this)
)
{
if (address(this).balance >= autoBuybackAmount){
buyTokens(address(this).balance, DEAD);
}
}
}
function setAutoBuybackSettings(uint256 _amount) external authorized {
autoBuybackAmount = _amount;
}
function setIncrement(uint256 inc) external authorized{
increment = inc;
}
function setFees(uint256 newLiqFee, uint256 newWhenMarketingFee, uint256 newBBFee) external authorized {
liquidityFee = newLiqFee;
whenMarketingFee = newWhenMarketingFee;
buybackFee = newBBFee;
totalFee = liquidityFee.add(whenMarketingFee).add(buybackFee);
totalFeeIfSelling = totalFee;
}
function buyTokens(uint256 amount, address to) internal {
address[] memory path = new address[](2);
path[0] = WBNB;
path[1] = address(this);
router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
0,
path,
to,
block.timestamp
);
}
function transfer(address recipient, uint256 amount) external override returns (bool) {
return _transferFrom(msg.sender, recipient, amount);
}
function setRestrictWhales(bool active) external authorized {
restrictWhales = active;
}
function setMaxWalletAmount(uint256 percent) external authorized {
_walletMax = _totalSupply * (percent*10) / 1000;
}
function changeFeeReceivers(address newLiquidityReceiver, address newDevWallet) external authorized {
autoLiquidityReceiver = newLiquidityReceiver;
devWallet = newDevWallet;
}
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if(_allowances[sender][msg.sender] != uint256(-1)){
_allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
}
return _transferFrom(sender, recipient, amount);
}
function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
if(inSwapAndLiquify){ return _basicTransfer(sender, recipient, amount); }
if(msg.sender != pair && !inSwapAndLiquify && swapAndLiquifyEnabled && _balances[address(this)] >= swapThreshold){ swapBack(); }
checkTxLimit(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
uint256 amountReceived = !isFeeExempt[sender] && !isFeeExempt[recipient] ? takeFee(sender, recipient, amount) : amount;
_balances[recipient] = _balances[recipient].add(amountReceived);
emit Transfer(msg.sender, recipient, amountReceived);
return true;
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
return true;
}
function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
uint256 feeApplicable = pair == recipient ? totalFeeIfSelling : totalFee;
uint256 feeAmount = amount.mul(feeApplicable).div(100);
_balances[address(this)] = _balances[address(this)].add(feeAmount);
emit Transfer(sender, address(this), feeAmount);
return amount.sub(feeAmount);
}
function swapBack() internal lockTheSwap {
uint256 tokensToLiquify = _balances[address(this)];
uint256 amountToLiquify = tokensToLiquify.mul(liquidityFee).div(totalFee).div(2);
uint256 amountToSwap = tokensToLiquify.sub(amountToLiquify);
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap,
0,
path,
address(this),
block.timestamp
);
uint256 amountBNB = address(this).balance;
uint256 totalBNBFee = totalFee.sub(liquidityFee.div(2));
uint256 amountBNBDev = amountBNB.mul(whenMarketingFee).div(totalBNBFee);
uint256 amountBNBBuyback = amountBNB.mul(buybackFee).div(totalBNBFee);
uint256 amountBNBLiquidity = amountBNB.mul(liquidityFee).div(totalBNBFee).div(2);
(bool tmpSuccess,) = payable(devWallet).call{value: amountBNBDev, gas: 30000}("");
tmpSuccess = false;
(bool tmpSuccess2,) = payable(address(this)).call{value: amountBNBBuyback, gas: 30000}("");
tmpSuccess2 = false;
if(amountToLiquify > 0){
router.addLiquidityETH{value: amountBNBLiquidity}(
address(this),
amountToLiquify,
0,
0,
autoLiquidityReceiver,
block.timestamp
);
emit AutoLiquify(amountBNBLiquidity, amountToLiquify);
}
}
event AutoLiquify(uint256 amountBNB, uint256 amountBOG);
}
