Contract Source Code:
File 1 of 1 : PrivagoAI
// SPDX-License-Identifier: MIT
/**
Privago AI
Virtual Private Network Service That Is Built On A Decentralized Architecture
Website: https://privago.ai
Telegram: https://t.me/privago
Twitter: https://x.com/privagoai
Medium: https://privago.medium.com
*/
pragma solidity 0.8.25;
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);
}
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;
}
}
contract Ownable is Context {
address private _owner;
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
/**
* @title Privago Token
* @author Privago Dev
* @notice This contract implements the Privago token (PVGO) with buy and sell taxes, max wallet and transaction limits, and trading restrictions.
*/
contract PrivagoAI is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => uint256) private _balances;
mapping (address => bool) private isExcludedFromTax;
address private _taxWallet;
uint256 private _initialBuyTax=20;
uint256 private _initialSellTax=25;
string private constant _name = "Privago AI";
string private constant _symbol = "PVGO";
uint8 private constant _decimals = 18;
uint256 private constant _tTotal = 200000000 * 10**_decimals;
uint256 public _maxWalletAmount = 1000000 * 10**_decimals;
uint256 public _maxTxAmount = 1000000 * 10**_decimals;
uint256 public _maxSwapAmount = 1000000 * 10**_decimals;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private swapLimitOn = true;
bool private tradingOpen;
bool private inSwap = false;
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
event MaxTxAmountUpdated(uint256 _maxTxAmount);
/**
* @notice Constructor function
* @param taxWalletAddress The address of the wallet to receive tax amounts
*/
constructor (address taxWalletAddress) {
_taxWallet = taxWalletAddress;
uint256 tokenAmount = _tTotal.mul(16).div(100);
isExcludedFromTax[taxWalletAddress] = true;
_balances[_msgSender()] = _tTotal.sub(tokenAmount);
_balances[address(this)] = tokenAmount;
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
emit Transfer(address(0), _msgSender(), _tTotal);
}
/**
* @notice Returns the name of the token
* @return The name of the token
*/
function name() public pure returns (string memory) {
return _name;
}
/**
* @notice Returns the symbol of the token
* @return The symbol of the token
*/
function symbol() public pure returns (string memory) {
return _symbol;
}
/**
* @notice Approves `spender` to spend `amount` tokens on behalf of the caller
* @param spender The address of the spender
* @param amount The amount of tokens to approve
* @return A boolean indicating whether the approval succeeded
*/
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @notice Returns the number of decimal places used by the token
* @return The number of decimal places
*/
function decimals() public pure returns (uint8) {
return _decimals;
}
/**
* @notice Transfers `amount` tokens from `sender` to `recipient` if the caller has sufficient allowance
* @param sender The address of the sender
* @param recipient The address of the recipient
* @param amount The amount of tokens to transfer
* @return A boolean indicating whether the transfer succeeded
*/
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;
}
/**
* @notice Returns the total supply of tokens
* @return The total supply of tokens
*/
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
/**
* @notice Returns the token balance of `account`
* @param account The address to query the balance of
* @return The token balance of `account`
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @notice Transfers `amount` tokens from the caller to `recipient`
* @param recipient The address of the recipient
* @param amount The amount of tokens to transfer
* @return A boolean indicating whether the transfer succeeded
*/
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @notice Returns the amount of tokens that `spender` is allowed to spend on behalf of `owner`
* @param owner The address of the token owner
* @param spender The address of the spender
* @return The amount of tokens `spender` is allowed to spend on behalf of `owner`
*/
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @notice Approves `spender` to spend `amount` tokens on behalf of `owner`
* @param owner The address of the token owner
* @param spender The address of the spender
* @param amount The amount of tokens to approve
*/
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);
}
/**
* @notice Transfers `amount` tokens from `from` to `to`, applying buy or sell taxes if applicable
* @param from The address of the sender
* @param to The address of the recipient
* @param amount The amount of tokens to transfer
*/
function _transfer(address from, address to, uint256 amount) private {
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");
uint256 taxAmount=0;
if (from != owner() && to != owner()) {
require(tradingOpen,"Trading is not started");
require(amount <= _maxTxAmount, "Transfer amount exceeds maxTxSize");
if (from == uniswapV2Pair && to != address(uniswapV2Router)) {
require(balanceOf(to) + amount <= _maxWalletAmount, "Exceeds the maxWalletSize.");
taxAmount = amount.mul(_initialBuyTax).div(100);
} else if (to == uniswapV2Pair){
taxAmount = amount.mul(_initialSellTax).div(100);
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && to == uniswapV2Pair) {
if (swapLimitOn) {
uint256 getMinValue = (contractTokenBalance > _maxSwapAmount)?_maxSwapAmount:contractTokenBalance;
swapTokensForEth((amount > getMinValue)?getMinValue:amount);
} else {
swapTokensForEth(contractTokenBalance);
}
}
} else {
taxAmount = 0;
}
}
if(taxAmount>0){
_balances[address(this)]=_balances[address(this)].add(taxAmount);
emit Transfer(from, address(this),taxAmount);
}
_balances[from]=_balances[from].sub(amount);
_balances[to]=_balances[to].add(amount.sub(taxAmount));
emit Transfer(from, to, amount.sub(taxAmount));
}
/**
* @notice Swaps `tokenAmount` tokens for ETH on Uniswap
* @param tokenAmount The amount of tokens to swap
*/
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
if(tokenAmount==0){return;}
if(tokenAmount>_maxTxAmount) {
tokenAmount = _maxTxAmount;
}
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,
_taxWallet,
block.timestamp
);
}
/**
* @notice Sends `amount` of ETH to the tax wallet
* @param amount The amount of ETH to send
*/
function sendETHToFee(uint256 amount) private {
payable(_taxWallet).transfer(amount);
}
/**
* @notice Sets a new buy tax percentage
* @param taxPercent The new buy tax percentage
*/
function setNewBuyTaxAmount(uint256 taxPercent) external onlyOwner {
_initialBuyTax = taxPercent;
}
/**
* @notice Sets a new sell tax percentage
* @param taxPercent The new sell tax percentage
*/
function setNewSellTaxAmount(uint256 taxPercent) external onlyOwner {
_initialSellTax = taxPercent;
}
/**
* @notice Sets a new maximum wallet amount
* @param amount The new maximum wallet amount
*/
function setNewMaxWalletAmount(uint256 amount) external onlyOwner {
_maxWalletAmount = amount * 10**_decimals;
}
/**
* @notice Sets a new maximum transaction amount
* @param amount The new maximum transaction amount
*/
function setNewMaxTransactionAmount(uint256 amount) external onlyOwner {
_maxTxAmount = amount * 10**_decimals;
}
/**
* @notice Sets a new maximum swap amount
* @param amount The new maximum swap amount
*/
function setNewMaxSwapAmount(uint256 amount) external onlyOwner {
_maxSwapAmount = amount * 10**_decimals;
}
/**
* @notice Opens trading
*/
function openTrading() external onlyOwner {
require(!tradingOpen,"trading is already open");
tradingOpen = true;
}
/**
* @notice Rescues any ETH stuck in the contract
*/
function rescueEth() external {
require(_msgSender() == _taxWallet);
uint256 ethBalance = address(this).balance;
if(ethBalance>0){
sendETHToFee(ethBalance);
}
}
/**
* @notice Rescues any ERC20 tokens stuck in the contract
* @param tokenContractAddress The address of the token contract
* @param toRescueAddress The address to send the rescued tokens to
* @param amount The amount of tokens to rescue
*/
function rescueTokens(address tokenContractAddress, address toRescueAddress, uint256 amount) external {
require(_msgSender()==_taxWallet);
require(tokenContractAddress != address(this), "Not allowed to rescue self");
uint256 initial = IERC20(tokenContractAddress).balanceOf(address(this));
require(initial >= amount, "Not enough token available");
IERC20(tokenContractAddress).transfer(toRescueAddress, amount);
}
/**
* @notice Removes all limits
*/
function removeAllLimit() external onlyOwner {
_maxTxAmount = _tTotal;
_maxWalletAmount=_tTotal;
swapLimitOn = false;
emit MaxTxAmountUpdated(_tTotal);
}
/**
* @notice Forces a swap of all tokens in the contract
*/
function forceSwap() external {
require(_msgSender()==_taxWallet);
uint256 tokenAmount=balanceOf(address(this));
if(tokenAmount>0){
swapTokensForEth(tokenAmount);
}
}
receive() external payable {}
}