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July 10, 2022 08:33
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/** | |
*Submitted for verification at BscScan.com on 2022-05-18 | |
*/ | |
/* | |
Website: https://dogetweet.co/ | |
Twitter: https://twitter.com/dogetweet | |
Telegram: https://t.me/dogetweettele | |
*/ | |
//SPDX-License-Identifier: MIT | |
pragma solidity ^0.8.5; | |
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) { | |
// Solidity only automatically asserts when dividing by 0 | |
require(b > 0, errorMessage); | |
uint256 c = a / b; | |
// assert(a == b * c + a % b); // There is no case in which this doesn't hold | |
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); | |
} | |
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 transferOwnership(address payable adr) public onlyOwner { | |
owner = adr; | |
authorizations[adr] = true; | |
emit OwnershipTransferred(adr); | |
} | |
event OwnershipTransferred(address owner); | |
} | |
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; | |
} | |
contract ChadCommunityCoin is IBEP20, Auth { | |
using SafeMath for uint256; | |
address WBNB = 0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c; | |
address DEAD = 0x000000000000000000000000000000000000dEaD; | |
address ZERO = 0x0000000000000000000000000000000000000000; | |
string constant _name = "Doge Tweet"; | |
string constant _symbol = "DogeT"; | |
uint8 constant _decimals = 9; | |
uint256 _totalSupply = 1000000000000 * (10 ** _decimals); | |
uint256 public _maxWalletSize = (_totalSupply * 1) / 100; | |
uint256 public _minTransferForReferral = 1 * (10 ** _decimals); | |
mapping (address => uint256) _balances; | |
mapping (address => mapping (address => uint256)) _allowances; | |
mapping (address => bool) isFeeExempt; | |
mapping (address => address) public referrer; | |
mapping(address => bool) public isReferred; | |
uint256 liquidityFee = 1; | |
uint256 devFee = 0; | |
uint256 marketingFee = 2; // WILL BE USED FOR COMMUNTIY GIVEAWAYS AND COMPETITIONS | |
uint256 totalFee = 3; | |
uint256 feeDenominator = 100; | |
uint256 referralFee = 3; | |
uint256 public minSupplyForReferralReward = (_totalSupply * 1) / 1000; | |
address private marketingFeeReceiver = 0xc916F798964E5352A1dc1ba200694247306AE866; | |
address private devFeeReceiver = 0xc916F798964E5352A1dc1ba200694247306AE866; | |
IDEXRouter public router; | |
address public pair; | |
bool public swapEnabled = true; | |
uint256 public swapThreshold = _totalSupply / 1000 * 3; // 0.3% | |
bool inSwap; | |
modifier swapping() { inSwap = true; _; inSwap = false; } | |
event ReferralBonus(address indexed feesTo , address indexed feesFrom , uint value); | |
event Referred(address indexed referred,address indexed referrer); | |
constructor () Auth(msg.sender) { | |
router = IDEXRouter(0x10ED43C718714eb63d5aA57B78B54704E256024E); | |
pair = IDEXFactory(router.factory()).createPair(WBNB, address(this)); | |
_allowances[address(this)][address(router)] = type(uint256).max; | |
address _owner = owner; | |
isFeeExempt[_owner] = true; | |
isFeeExempt[pair] = true; | |
isFeeExempt[address(router)] = true; | |
isReferred[_owner] = true; | |
_balances[_owner] = _totalSupply; | |
emit Transfer(address(0), _owner, _totalSupply); | |
} | |
receive() external payable { } | |
function totalSupply() external view override returns (uint256) { return _totalSupply; } | |
function decimals() external pure override returns (uint8) { return _decimals; } | |
function symbol() external pure override returns (string memory) { return _symbol; } | |
function name() external pure override returns (string memory) { return _name; } | |
function getOwner() external view override returns (address) { return owner; } | |
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, 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 _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) { | |
if(inSwap){ return _basicTransfer(sender, recipient, amount); } | |
if (recipient != pair && recipient != DEAD) { | |
require(isFeeExempt[recipient] || _balances[recipient] + amount <= _maxWalletSize, "Transfer amount exceeds the bag size."); | |
} | |
uint256 amountReceived = amount; | |
if(sender == pair) { //buy | |
if(!isFeeExempt[recipient]) { | |
require(isReferred[recipient],"Not referred"); | |
amountReceived = takeReferralFees(recipient,amount); | |
} | |
} else if(recipient == pair) { //sell | |
if(shouldTakeFee(sender)) { | |
amountReceived = takeFee(sender, amount); | |
} | |
} else if(isReferred[recipient]==false) { | |
if(amount >= _minTransferForReferral) { | |
isReferred[recipient] = true; | |
referrer[recipient] = sender; | |
emit Referred(recipient,sender); | |
} | |
} | |
if(shouldSwapBack()){ swapBack(); } | |
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance"); | |
_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[sender] = _balances[sender].sub(amount, "Insufficient Balance"); | |
_balances[recipient] = _balances[recipient].add(amount); | |
emit Transfer(sender, recipient, amount); | |
return true; | |
} | |
function takeReferralFees(address from,uint256 amount) internal returns(uint) { | |
uint256 referralTokens = referralFee * amount / feeDenominator; | |
if(_balances[referrer[from]] > minSupplyForReferralReward) { | |
_balances[referrer[from]] = _balances[referrer[from]].add(referralTokens); | |
emit ReferralBonus(referrer[from],from,referralTokens); | |
} else { | |
_balances[marketingFeeReceiver] = _balances[marketingFeeReceiver].add(referralTokens); | |
emit ReferralBonus(marketingFeeReceiver,from,referralTokens); | |
} | |
return amount - referralTokens; | |
} | |
function shouldTakeFee(address sender) internal view returns (bool) { | |
return !isFeeExempt[sender]; | |
} | |
function takeFee(address sender, uint256 amount) internal returns (uint256) { | |
uint256 feeAmount = amount.mul(totalFee).div(feeDenominator); | |
_balances[address(this)] = _balances[address(this)].add(feeAmount); | |
emit Transfer(sender, address(this), feeAmount); | |
return amount.sub(feeAmount); | |
} | |
function shouldSwapBack() internal view returns (bool) { | |
return msg.sender != pair | |
&& !inSwap | |
&& swapEnabled | |
&& _balances[address(this)] >= swapThreshold; | |
} | |
function swapBack() internal swapping { | |
uint256 contractTokenBalance = balanceOf(address(this)); | |
uint256 amountToLiquify = contractTokenBalance.mul(liquidityFee).div(totalFee).div(2); | |
uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify); | |
address[] memory path = new address[](2); | |
path[0] = address(this); | |
path[1] = WBNB; | |
uint256 balanceBefore = address(this).balance; | |
router.swapExactTokensForETHSupportingFeeOnTransferTokens( | |
amountToSwap, | |
0, | |
path, | |
address(this), | |
block.timestamp | |
); | |
uint256 amountBNB = address(this).balance.sub(balanceBefore); | |
uint256 totalBNBFee = totalFee.sub(liquidityFee.div(2)); | |
uint256 amountBNBLiquidity = amountBNB.mul(liquidityFee).div(totalBNBFee).div(2); | |
uint256 amountBNBDev = amountBNB.mul(devFee).div(totalBNBFee); | |
uint256 amountBNBMarketing = amountBNB - amountBNBLiquidity - amountBNBDev; | |
(bool MarketingSuccess, /* bytes memory data */) = payable(marketingFeeReceiver).call{value: amountBNBMarketing, gas: 30000}(""); | |
require(MarketingSuccess, "receiver rejected ETH transfer"); | |
(bool DevSuccess, /* bytes memory data */) = payable(devFeeReceiver).call{value: amountBNBDev, gas: 30000}(""); | |
require(DevSuccess, "receiver rejected ETH transfer"); | |
addLiquidity(amountToLiquify, amountBNBLiquidity); | |
} | |
function addLiquidity(uint256 tokenAmount, uint256 BNBAmount) private { | |
if(tokenAmount > 0){ | |
router.addLiquidityETH{value: BNBAmount}( | |
address(this), | |
tokenAmount, | |
0, | |
0, | |
address(this), | |
block.timestamp | |
); | |
emit AutoLiquify(BNBAmount, tokenAmount); | |
} | |
} | |
function setMaxWallet(uint256 amount) external onlyOwner() { | |
require(amount >= _totalSupply / 1000 ); | |
_maxWalletSize = amount; | |
} | |
function setMinimumBalanceForReferral(uint256 amount) external onlyOwner { | |
minSupplyForReferralReward = amount; | |
} | |
function setMinTransferForReferral(uint256 amount) external onlyOwner() { | |
require(amount <= 1*(10**_decimals) ); | |
_minTransferForReferral = amount; | |
} | |
function setIsFeeExempt(address holder, bool exempt) external authorized { | |
isFeeExempt[holder] = exempt; | |
} | |
function setReferralFee(uint256 newFee) external authorized { | |
referralFee = newFee; | |
} | |
function setFees(uint256 _liquidityFee, uint256 _devFee, uint256 _marketingFee, uint256 _feeDenominator) external authorized { | |
liquidityFee = _liquidityFee; | |
devFee = _devFee; | |
marketingFee = _marketingFee; | |
totalFee = _liquidityFee.add(_devFee).add(_marketingFee); | |
feeDenominator = _feeDenominator; | |
} | |
function setFeeReceiver(address _marketingFeeReceiver, address _devFeeReceiver) external authorized { | |
marketingFeeReceiver = _marketingFeeReceiver; | |
devFeeReceiver = _devFeeReceiver; | |
} | |
function setSwapBackSettings(bool _enabled, uint256 _amount) external authorized { | |
swapEnabled = _enabled; | |
swapThreshold = _amount; | |
} | |
function manualSend() external authorized { | |
uint256 contractETHBalance = address(this).balance; | |
payable(marketingFeeReceiver).transfer(contractETHBalance); | |
} | |
function transferForeignToken(address _token) public authorized { | |
require(_token != address(this), "Can't let you take all native token"); | |
uint256 _contractBalance = IBEP20(_token).balanceOf(address(this)); | |
payable(marketingFeeReceiver).transfer(_contractBalance); | |
} | |
function getCirculatingSupply() public view returns (uint256) { | |
return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO)); | |
} | |
function getLiquidityBacking(uint256 accuracy) public view returns (uint256) { | |
return accuracy.mul(balanceOf(pair).mul(2)).div(getCirculatingSupply()); | |
} | |
function isOverLiquified(uint256 target, uint256 accuracy) public view returns (bool) { | |
return getLiquidityBacking(accuracy) > target; | |
} | |
event AutoLiquify(uint256 amountBNB, uint256 amountBOG); | |
} |
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