typo3/sysext/frontend/Classes/Middleware/TypoScriptFrontendInitialization.php

   1 <?php
   2 declare(strict_types = 1);
   3 namespace TYPO3\CMS\Frontend\Middleware;
   4
   5 /*
   6  * This file is part of the TYPO3 CMS project.
   7  *
   8  * It is free software; you can redistribute it and/or modify it under
   9  * the terms of the GNU General Public License, either version 2
  10  * of the License, or any later version.
  11  *
  12  * For the full copyright and license information, please read the
  13  * LICENSE.txt file that was distributed with this source code.
  14  *
  15  * The TYPO3 project - inspiring people to share!
  16  */
  17
  18 use Doctrine\DBAL\Exception\ConnectionException;
  19 use Psr\Http\Message\ResponseInterface;
  20 use Psr\Http\Message\ServerRequestInterface;
  21 use Psr\Http\Server\MiddlewareInterface;
  22 use Psr\Http\Server\RequestHandlerInterface;
  23 use Psr\Log\LoggerAwareInterface;
  24 use Psr\Log\LoggerAwareTrait;
  25 use TYPO3\CMS\Core\Database\ConnectionPool;
  26 use TYPO3\CMS\Core\Error\Http\ServiceUnavailableException;
  27 use TYPO3\CMS\Core\Utility\GeneralUtility;
  28 use TYPO3\CMS\Frontend\Controller\ErrorController;
  29 use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;
  30
  31 /**
  32  * Creates an instance of TypoScriptFrontendController and makes this globally available
  33  * via $GLOBALS['TSFE'].
  34  *
  35  * For now, GeneralUtility::_GP() is used in favor of $request->getQueryParams() due to
  36  * hooks who could have $_GET/$_POST modified before.
  37  *
  38  * @internal
  39  */
  40 class TypoScriptFrontendInitialization implements MiddlewareInterface, LoggerAwareInterface
  41 {
  42     use LoggerAwareTrait;
  43
  44     /**
  45      * Creates an instance of TSFE and sets it as a global variable,
  46      * also pings the database in order ensure a valid database connection.
  47      *
  48      * @param ServerRequestInterface $request
  49      * @param RequestHandlerInterface $handler
  50      * @return ResponseInterface
  51      */
  52     public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
  53     {
  54         $GLOBALS['TSFE'] = GeneralUtility::makeInstance(
  55             TypoScriptFrontendController::class,
  56             null,
  57             GeneralUtility::_GP('id'),
  58             GeneralUtility::_GP('type'),
  59             null,
  60             GeneralUtility::_GP('cHash'),
  61             null,
  62             GeneralUtility::_GP('MP')
  63         );
  64         if (GeneralUtility::_GP('no_cache')) {
  65             $GLOBALS['TSFE']->set_no_cache('&no_cache=1 has been supplied, so caching is disabled! URL: "' . (string)$request->getUri() . '"');
  66         }
  67
  68         // Set up the database connection and see if the connection can be established
  69         try {
  70             $connection = GeneralUtility::makeInstance(ConnectionPool::class)->getConnectionForTable('pages');
  71             $connection->connect();
  72         } catch (ConnectionException $exception) {
  73             // Cannot connect to current database
  74             $message = 'Cannot connect to the configured database "' . $connection->getDatabase() . '"';
  75             $this->logger->emergency($message, ['exception' => $exception]);
  76             try {
  77                 return GeneralUtility::makeInstance(ErrorController::class)->unavailableAction($request, $message);
  78             } catch (ServiceUnavailableException $e) {
  79                 throw new ServiceUnavailableException($message, 1526013723);
  80             }
  81         }
  82         // Call post processing function for DB connection:
  83         $_params = ['pObj' => &$GLOBALS['TSFE']];
  84         foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['tslib/class.tslib_fe.php']['connectToDB'] ?? [] as $_funcRef) {
  85             GeneralUtility::callUserFunction($_funcRef, $_params, $GLOBALS['TSFE']);
  86         }
  87
  88         return $handler->handle($request);
  89     }
  90 }