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   1  <?php
   2  /**
   3  *
   4  * This file is part of the phpBB Forum Software package.
   5  *
   6  * @copyright (c) phpBB Limited <https://www.phpbb.com>
   7  * @license GNU General Public License, version 2 (GPL-2.0)
   8  *
   9  * For full copyright and license information, please see
  10  * the docs/CREDITS.txt file.
  11  *
  12  */
  13  
  14  namespace phpbb\event;
  15  
  16  use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  17  use Symfony\Component\HttpFoundation\JsonResponse;
  18  use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
  19  use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
  20  use Symfony\Component\HttpKernel\KernelEvents;
  21  use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
  22  use Symfony\Component\HttpFoundation\Response;
  23  
  24  class kernel_exception_subscriber implements EventSubscriberInterface
  25  {
  26      /**
  27       * Set to true to show full exception messages
  28       *
  29       * @var bool
  30       */
  31      protected $debug;
  32  
  33      /**
  34      * Template object
  35      *
  36      * @var \phpbb\template\template
  37      */
  38      protected $template;
  39  
  40      /**
  41      * Language object
  42      *
  43      * @var \phpbb\language\language
  44      */
  45      protected $language;
  46  
  47      /**
  48      * User object
  49      *
  50      * @var \phpbb\user
  51      */
  52      protected $user;
  53  
  54      /** @var \phpbb\request\type_cast_helper */
  55      protected $type_caster;
  56  
  57      /**
  58      * Construct method
  59      *
  60      * @param \phpbb\template\template    $template    Template object
  61      * @param \phpbb\language\language    $language    Language object
  62      * @param \phpbb\user                $user        User object
  63      * @param bool                        $debug        Set to true to show full exception messages
  64      */
  65  	public function __construct(\phpbb\template\template $template, \phpbb\language\language $language, \phpbb\user $user, $debug = false)
  66      {
  67          $this->debug = $debug || defined('DEBUG');
  68          $this->template = $template;
  69          $this->language = $language;
  70          $this->user = $user;
  71          $this->type_caster = new \phpbb\request\type_cast_helper();
  72      }
  73  
  74      /**
  75      * This listener is run when the KernelEvents::EXCEPTION event is triggered
  76      *
  77      * @param GetResponseForExceptionEvent $event
  78      * @return null
  79      */
  80  	public function on_kernel_exception(GetResponseForExceptionEvent $event)
  81      {
  82          $exception = $event->getException();
  83  
  84          $message = $exception->getMessage();
  85          $this->type_caster->set_var($message, $message, 'string', true, false);
  86  
  87          if ($exception instanceof \phpbb\exception\exception_interface)
  88          {
  89              $message = $this->language->lang_array($message, $exception->get_parameters());
  90          }
  91          else if (!$this->debug && $exception instanceof NotFoundHttpException)
  92          {
  93              $message = $this->language->lang('PAGE_NOT_FOUND');
  94          }
  95  
  96          // Do not update user session page if it does not exist
  97          if ($exception instanceof NotFoundHttpException)
  98          {
  99              $this->user->update_session_page = false;
 100          }
 101  
 102          // Show <strong> text in bold
 103          $message = preg_replace('#&lt;(/?strong)&gt;#i', '<$1>', $message);
 104  
 105          if (!$event->getRequest()->isXmlHttpRequest())
 106          {
 107              page_header($this->language->lang('INFORMATION'));
 108  
 109              $this->template->assign_vars(array(
 110                  'MESSAGE_TITLE' => $this->language->lang('INFORMATION'),
 111                  'MESSAGE_TEXT'  => $message,
 112              ));
 113  
 114              $this->template->set_filenames(array(
 115                  'body' => 'message_body.html',
 116              ));
 117  
 118              page_footer(true, false, false);
 119  
 120              $response = new Response($this->template->assign_display('body'), 500);
 121          }
 122          else
 123          {
 124              $data = array();
 125  
 126              if (!empty($message))
 127              {
 128                  $data['message'] = $message;
 129              }
 130  
 131              if ($this->debug)
 132              {
 133                  $data['trace'] = $exception->getTrace();
 134              }
 135  
 136              $response = new JsonResponse($data, 500);
 137          }
 138  
 139          if ($exception instanceof HttpExceptionInterface)
 140          {
 141              $response->setStatusCode($exception->getStatusCode());
 142              $response->headers->add($exception->getHeaders());
 143          }
 144  
 145          $event->setResponse($response);
 146      }
 147  
 148  	static public function getSubscribedEvents()
 149      {
 150          return array(
 151              KernelEvents::EXCEPTION        => 'on_kernel_exception',
 152          );
 153      }
 154  }