whmcsDNSManager/modules/addons/DNSManager2/mgLibs/custom/helpers/RegistrarDNSHelper.php

<?php
namespace MGModule\DNSManager2\mgLibs\custom\helpers;
use \MGModule\DNSManager2 as main;

class RegistrarDNSHelper 
{
    /**
     * This function is used to enable DNS Mamagement section in client area section 
     * @return type
     */    
    public static function prepareRegisrtrar()
    {
        //if we are not in domain details or in available actions function needs to be terminated
        if(!self::paresUrl()) 
        {
            return;
        }

        //when in "general option" section Domain ID needs to be taken from $_GET['id']
        $domainId = (int)$_GET['id'];
        if(empty($domainId))
        {
            //when showing DNS Records Domain ID needs to be taken from $_GET['domainid']
            $domainId = (int)$_GET['domainid'];
        }

        //when "save DNS" action is called Domain ID needs to be taken from $_POST['domainid']
        if(empty($domainId))
        {
            $domainId = (int)$_POST['domainid'];
        }
        
        if(empty($domainId))
        { 
            return;
        }

        try 
        {
            main\addon::I(true);
            $registrarHelper = new main\mgLibs\custom\dns\utils\CustomDnsRegistrarHelper($domainId);
            if(!$registrarHelper->isPackageActive())
            {
                return;
            }
            $file = $registrarHelper->creatreFunctionsFile(str_replace(
                DS.'mgLibs'.DS.'custom'.DS.'helpers','', realpath(dirname(__FILE__)))); 
            if(!file_exists($file))
            {
                throw new \Exception(
                    $file.' '.    
                    main\mgLibs\lang::T('not found').'.'
                );
            }
            require_once($file);
        }
        catch(Exception $ex)
        {
            main\addon::dump($ex);
            logModuleCall(
                'DNS Manager', __FUNCTION__, $ex->getMessage(), $ex->getMessage(), $ex->getTraceAsString()
            );
        }
    }
    
    /**
     * Function is used to parse URL address and detect if user is in avaialbe action section<Br />
     * What daoe it mean means it allow to run run action only when Domain ID is avaialble
     */    
    public static function paresUrl()
    {

        $availableActions = array(
            'domaindetails',
            'domaindns'
        );
        global $CONFIG;


        $host = parse_url($CONFIG['SystemURL'])['host'];
        $url = "http" . (($_SERVER['SERVER_PORT'] == 443) ? "s://" : "://") . $host . $_SERVER['REQUEST_URI'];

        $urlDetails = parse_url($url);

        foreach ($urlDetails as $key) 
        {
            foreach ($availableActions as $action) 
            {
                preg_match("/$action/", $key, $match);
                if (isset($match[0])) 
                {
                    return true;
                }
            }
        }

        return false;
    }    
}