Contract Name:
OpenLiquidity
Contract Source Code:
File 1 of 1 : OpenLiquidity
// SPDX-License-Identifier: MIT
/*
Unlock the Potential of Locked Liquidity in DeFi
Website: openliquidity.io
X: x.com/Open_Liquidity
Telegram: t.me/Open_Liquidity
backed by CryptoDo
*/
pragma solidity ^0.8.23;
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
);
}
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);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
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 IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract OpenLiquidity is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "OpenLiquidity";
string private constant _symbol = "OpenLi";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) public _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 200_000_000 * 10**_decimals;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 public _taxFeeOnBuy = 5;
uint256 public _taxFeeOnSell = 5;
uint256 public _maxFeeThreshold = 25;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _previoustaxFee = _taxFee;
address payable public _devAddress;
address payable public _daoAddress;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingActive;
bool private inSwap = false;
bool private swapEnabled = true;
bool public daoFeeEnabled = false;
bool public feeAddressesManagementRevoked;
uint256 public _maxTxAmount = _tTotal.div(100);
uint256 public _maxWalletSize = _tTotal.div(100);
uint256 public _swapTokensAtAmount = 1000 * 10**_decimals;
address public operatorAddress;
address public saleStarterAddress;
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor(
address routerAddress,
address devAddress,
address daoAddress
) {
_tOwned[_msgSender()] = _rTotal;
_devAddress = payable(devAddress);
_daoAddress = payable(daoAddress);
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(routerAddress);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_devAddress] = true;
emit Transfer(address(0), _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 tokenFromRef(_tOwned[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,
"the transfer amount exceeds allowance"
)
);
return true;
}
function tokenFromRef(uint256 rAmount) private view returns (uint256) {
require(
rAmount <= _rTotal,
"Amount has to be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function remAllFee() private {
if (_taxFee == 0) return;
_previoustaxFee = _taxFee;
_taxFee = 0;
}
function resAllFee() private {
_taxFee = _previoustaxFee;
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "Can't approve from zero address");
require(spender != address(0), "Can't approve to zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(to != address(0), "Cant transfer to address zero");
require(amount > 0, "Amount should be above zero");
if (from != owner() && to != owner()) {
if (!tradingActive) {
require(
from == owner(),
"Only owner can trade before trading activation"
);
}
require(amount <= _maxTxAmount, "Exceeded max transaction limit");
if (to != uniswapV2Pair) {
require(
balanceOf(to) + amount <= _maxWalletSize,
"Exceeds max wallet balance"
);
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= _swapTokensAtAmount;
if (contractTokenBalance >= _maxTxAmount) {
contractTokenBalance = _maxTxAmount;
}
if (
canSwap &&
!inSwap &&
from != uniswapV2Pair &&
swapEnabled &&
!_isExcludedFromFee[from] &&
!_isExcludedFromFee[to]
) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if (
(_isExcludedFromFee[from] || _isExcludedFromFee[to]) ||
(from != uniswapV2Pair && to != uniswapV2Pair)
) {
takeFee = false;
} else {
if (from == uniswapV2Pair && to != address(uniswapV2Router)) {
_taxFee = _taxFeeOnBuy;
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
_taxFee = _taxFeeOnSell;
}
}
_tokenTransfer(from, to, amount, takeFee);
}
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 sendETHToFee(uint256 amount) private {
if (daoFeeEnabled) {
uint256 primaryAmount = amount.mul(80).div(100);
uint256 secondaryAmount = amount.mul(20).div(100);
(bool sentdev, ) = payable(_devAddress).call{value: primaryAmount}("");
require(sentdev, "Transfer to dev failed");
(bool sentdao, ) = payable(_daoAddress).call{value: secondaryAmount}("");
require(sentdao, "Transfer to dao failed");
} else {
(bool sentdev, ) = payable(_devAddress).call{value: amount}("");
require(sentdev, "Transfer to dev failed");
}
}
function enableTrading(bool _tradingActive) public {
require(
msg.sender == operatorAddress ||
msg.sender == owner() ||
msg.sender == saleStarterAddress,
"Forbidden"
);
tradingActive = _tradingActive;
}
function setOperator(address operator) public onlyOwner {
operatorAddress = operator;
}
function setSaleStarter(address saleStarter) public onlyOperator {
saleStarterAddress = saleStarter;
}
function toggleDaoFeeEnabled() public onlyOperator {
daoFeeEnabled = !daoFeeEnabled;
}
function manualSend() external {
require(msg.sender == _devAddress, "Caller is not a dev address");
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) remAllFee();
_transferStandard(sender, recipient, amount);
if (!takeFee) resAllFee();
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 tTransferAmount,
uint256 tCom
) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(rTransferAmount);
_takeCom(tCom, sender);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeCom(uint256 tCom, address from) private {
uint256 currentRate = _getRate();
uint256 rCom = tCom.mul(currentRate);
_tOwned[address(this)] = _tOwned[address(this)].add(rCom);
emit Transfer(from, address(this), rCom);
}
receive() external payable {}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tTeam) = _getTValues(
tAmount,
_taxFee
);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount) = _getRValues(
tAmount,
tTeam,
currentRate
);
return (rAmount, rTransferAmount, tTransferAmount, tTeam);
}
function _getTValues(uint256 tAmount, uint256 taxFee)
private
pure
returns (uint256, uint256)
{
uint256 tTeam = tAmount.mul(taxFee).div(100);
uint256 tTransferAmount = tAmount.sub(tTeam);
return (tTransferAmount, tTeam);
}
function _getRValues(
uint256 tAmount,
uint256 tTeam,
uint256 currentRate
) private pure returns (uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rTeam);
return (rAmount, rTransferAmount);
}
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);
}
function setFee(uint256 taxFeeOnBuy, uint256 taxFeeOnSell)
public
onlyOperator
{
require(
taxFeeOnBuy >= 0 && taxFeeOnBuy <= _maxFeeThreshold,
"Buy tax must be between 0% and _maxFeeThreshold"
);
require(
taxFeeOnSell >= 0 && taxFeeOnSell <= _maxFeeThreshold,
"Sell tax must be between 0% and _maxFeeThreshold"
);
_taxFeeOnBuy = taxFeeOnBuy;
_taxFeeOnSell = taxFeeOnSell;
}
function downgradeMaxFee() public onlyOperator {
require(_maxFeeThreshold != 5, "fee already downgraded");
_maxFeeThreshold = 5;
_taxFeeOnBuy = 5;
_taxFeeOnSell = 5;
}
function setMinSwapTokens(uint256 swapTokensAtAmount) public onlyOwner {
_swapTokensAtAmount = swapTokensAtAmount;
}
function setMaxTxnAmount(uint256 maxTxAmount) public onlyOwner {
_maxTxAmount = maxTxAmount;
}
function setMaxWalletAmount(uint256 maxWalletSize) public onlyOwner {
_maxWalletSize = maxWalletSize;
}
function excludeAccountsFromFees(address[] calldata accounts, bool excluded)
public
onlyOperator
{
for (uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFee[accounts[i]] = excluded;
}
}
function changeDevelopmentAddress(address newDevAddress)
public
onlyOperator
{
require(
!feeAddressesManagementRevoked,
"Rights to change the fee addresses has beed revoked"
);
require(
newDevAddress != address(0),
"New development address cannot be zero address"
);
_isExcludedFromFee[_devAddress] = false;
_devAddress = payable(newDevAddress);
_isExcludedFromFee[_devAddress] = true;
}
function changeDaoAddress(address newDaoAddress) public onlyOperator {
require(
!feeAddressesManagementRevoked,
"Rights to change the fee addresses has beed revoked"
);
require(
newDaoAddress != address(0),
"New dao address cannot be zero address"
);
_isExcludedFromFee[_daoAddress] = false;
_daoAddress = payable(newDaoAddress);
_isExcludedFromFee[_daoAddress] = true;
}
function revokeRightsToChangeFeeAddresses() public onlyOperator {
require(!feeAddressesManagementRevoked, "Rights already revoked");
feeAddressesManagementRevoked = true;
}
modifier onlyOperator() {
require(
msg.sender == operatorAddress || msg.sender == owner(),
"Caller is not an operator"
);
_;
}
}