Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: MIT


pragma solidity = 0.8.28;

library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
     
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}
contract Context {

    function _msgSender() internal view virtual returns (address payable) {
        return payable(msg.sender);
    }
    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}


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) {
        // 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;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

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);
    }
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }


}

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}



// ETH LIVE PRICE

interface AggregatorV3Interface {
    function decimals() external view returns (uint8);

    function description() external view returns (string memory);

    function version() external view returns (uint256);

    function getRoundData(uint80 _roundId)
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );

    function latestRoundData()
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );
}






contract RwaPresale is Ownable ,ReentrancyGuard  {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;
    AggregatorV3Interface public priceFeedETH;
    address public feeReceiver;
    IERC20 public USDT;
    IERC20 public USDC; 
    IERC20 public token;
    uint256 public TokenPricePerUsdt; 
    uint256 public TokenSold; 
    uint256 public maxTokeninPresale;
    mapping (address => bool) public isBlacklist;
    bool public presaleStatus;
    bool public CanClaim;
    mapping(address => uint256) public Claimable;
    event Recovered(address token, uint256 amount);
    event Price(uint256 oldprice);
    event presalestatus(bool _status);
    event maxtokeninpresale(uint256 _newmaxtoken);
    event tokenaddress(address _newtoken);
    event updateblacklist(address _wallet,bool _isblacklist);
    event updateRecipient(address newrecipient);
    event updateClaimOn(bool _isClaimOn);



    constructor(address _USDT, address _USDC,address _token,address _feeRec)  {
       require(_feeRec != address(0), "Invalid recipient address");
       require(_USDT != address(0), "Invalid USDT address");
       require(_USDC != address(0), "Invalid USDC address");
       require(_token != address(0), "Invalid token address");
       TokenPricePerUsdt=0.03*(1E18); 
       maxTokeninPresale=10000000000*(1E18);

        priceFeedETH = AggregatorV3Interface(
            0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419 //ETH mainnet aggregator
            // 0x694AA1769357215DE4FAC081bf1f309aDC325306 //ETH tESTNET aggregator sepolia
        );


       USDT=IERC20(_USDT);
       USDC=IERC20(_USDC);
       token=IERC20(_token);
       feeReceiver =(_feeRec);
    }

     receive() external payable {
            // React to receiving ETH
        }


          // to get real time price of ETH
    function getLatestPriceETH() public view returns (uint256) {
        (, int256 price, , , ) = priceFeedETH.latestRoundData();
        return uint256(price);
    }

     function setaggregatorv3(address _priceFeedETH) external onlyOwner {
        require(_priceFeedETH != address(0), "Invalid aggregator address");
        priceFeedETH = AggregatorV3Interface(_priceFeedETH);
    }


    function BuyWithETH() external payable nonReentrant 
    {
        require(TokenSold.add(ETHToToken(msg.value))<=maxTokeninPresale,"Hardcap Reached!");
        require(presaleStatus == true, "Presale : Presale is not started");  
        require(isBlacklist[msg.sender]==false,"Presale : you are blacklisted");
          // Update claimable tokens for the buyer
        uint256 tokensToTransfer = ETHToToken(msg.value);
        Claimable[msg.sender] += tokensToTransfer;
        TokenSold =TokenSold.add(ETHToToken(msg.value)); 
        require(msg.value > 0, "Presale : Unsuitable Amount"); 
        payable(feeReceiver).transfer(msg.value);
    }



    function BuyWithUSDT(uint256 _amt) external nonReentrant{

        require(TokenSold.add(getValuePerUsdt(_amt))<=maxTokeninPresale,"Hardcap Reached!");
        require(presaleStatus == true, "Presale : Presale is not started");  
        require(_amt > 0, "Presale : Unsuitable Amount"); 
        require(isBlacklist[msg.sender]==false,"Presale : you are blacklisted");
        uint256 tokensToTransfer = getValuePerUsdt(_amt);
        Claimable[msg.sender] += tokensToTransfer;
        TokenSold =TokenSold.add(getValuePerUsdt(_amt)); 
         IERC20(USDT).safeTransferFrom(msg.sender,feeReceiver,_amt); 

    }



    function BuyWithUSDC(uint256 _amt) external nonReentrant {

        require(TokenSold.add(getValuePerUsdt(_amt))<=maxTokeninPresale,"Hardcap Reached!");
        require(presaleStatus == true, "Presale : Presale is not started");  
        require(_amt > 0, "Presale : Unsuitable Amount"); 
        require(isBlacklist[msg.sender]==false,"Presale : you are blacklisted");
        uint256 tokensToTransfer = getValuePerUsdt(_amt);
        Claimable[msg.sender] += tokensToTransfer;
        TokenSold =TokenSold.add(getValuePerUsdt(_amt)); 
        IERC20(USDC).safeTransferFrom(msg.sender,feeReceiver,_amt);
    }

    function claim() external nonReentrant {
        require(CanClaim==true,"Claim is not open yet");
        require(isBlacklist[msg.sender]==false,"Presale : you are blacklisted");
        uint256 claimable=Claimable[msg.sender];
        require(claimable>0,"no claimable found");
        require(claimable>=token.balanceOf(address(this)),"Not sufficient tokens available");
        Claimable[msg.sender]=0;
        require(token.transfer(msg.sender, claimable),"Token transfer failed");
    }


    function getValuePerUsdt(uint256 _amt) public view returns(uint256){
    
       return   (TokenPricePerUsdt.mul(_amt)).div(1e6);
    }

    

    function setPresalePricePerUsdt(uint256 _newPrice) external onlyOwner {
        require(_newPrice >0, "Can't set 0");
        TokenPricePerUsdt = _newPrice;
        emit Price(_newPrice);

    }


    function stopPresale() external onlyOwner {
        presaleStatus = false;
        emit presalestatus(false);
    }

    function resumePresale() external onlyOwner {
        presaleStatus = true;
        emit presalestatus(true);

    }

    function setmaxTokeninPresale(uint256 _value) external onlyOwner{
        require(_value >0, "Invalid max presale value");
        maxTokeninPresale=_value;
        emit maxtokeninpresale(_value);

    }

     function recoverERC20( address tokenAddress ,uint256 tokenAmount) external onlyOwner {
        require(tokenAddress != address(0), "Invalid token address");
        IERC20(tokenAddress).safeTransfer(this.owner(),tokenAmount);
        emit Recovered(address(tokenAddress), tokenAmount);
    }


    function settoken(address _token) external onlyOwner{
        require(_token != address(0), "Invalid token address");
        token=IERC20(_token);
        emit tokenaddress(_token);
    }

    function setUSDT(address _usdt) external onlyOwner{
        require(_usdt != address(0), "Invalid USDT address");
        USDT=IERC20(_usdt);
        emit tokenaddress(_usdt);

    }

    function setUSDC(address _USDC) external onlyOwner{
        require(_USDC != address(0), "Invalid USDC address");
        USDC=IERC20(_USDC);
        emit tokenaddress(_USDC);

    }



    function setBlacklist(address _addr,bool _state) external onlyOwner{
        require(_addr != address(0), "Invalid address");
        isBlacklist[_addr]=_state;
        emit updateblacklist(_addr,_state);
    }


       function releaseFunds() external onlyOwner 
    {
        payable(msg.sender).transfer(address(this).balance);
        
    }


    function ETHToToken(uint256 _amount) public view returns (uint256) {
        uint256 ETHToUSD = (_amount * (getLatestPriceETH())) / (1 ether);
        uint256 numberOfTokens = (ETHToUSD * (TokenPricePerUsdt)) / (1e8);
        return numberOfTokens;
    }

    function changefeeReceiver(address newFeeReceiver) external onlyOwner{
        require(newFeeReceiver != address(0), "Invalid recipient address");
        feeReceiver = newFeeReceiver;
        emit updateRecipient(newFeeReceiver);
    }


     function StartClaim() external onlyOwner{
        CanClaim=true;
        emit updateClaimOn(true);
    }

       function StopClaim() external onlyOwner{
        CanClaim=false;
        emit updateClaimOn(false);

    }

}