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

   1 <?php
   2
   3 declare(strict_types=1);
   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 namespace TYPO3\CMS\Frontend\Middleware;
  19
  20 use Psr\Http\Message\ResponseInterface;
  21 use Psr\Http\Message\ServerRequestInterface;
  22 use Psr\Http\Server\MiddlewareInterface;
  23 use Psr\Http\Server\RequestHandlerInterface;
  24 use TYPO3\CMS\Core\Exception;
  25 use TYPO3\CMS\Core\Http\DispatcherInterface;
  26 use TYPO3\CMS\Core\Http\NullResponse;
  27 use TYPO3\CMS\Core\Http\Response;
  28
  29 /**
  30  * Lightweight alternative to regular frontend requests; used when $_GET[eID] is set.
  31  * In the future, logic from the EidUtility will be moved to this class, however in most cases
  32  * a custom PSR-15 middleware will be better suited for whatever job the eID functionality does currently.
  33  *
  34  * @internal
  35  */
  36 class EidHandler implements MiddlewareInterface
  37 {
  38     /**
  39      * @var DispatcherInterface
  40      */
  41     protected $dispatcher;
  42
  43     /**
  44      * @param DispatcherInterface $dispatcher
  45      */
  46     public function __construct(DispatcherInterface $dispatcher)
  47     {
  48         $this->dispatcher = $dispatcher;
  49     }
  50
  51     /**
  52      * Dispatches the request to the corresponding eID class or eID script
  53      *
  54      * @param ServerRequestInterface $request
  55      * @param RequestHandlerInterface $handler
  56      * @return ResponseInterface
  57      * @throws Exception
  58      */
  59     public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
  60     {
  61         $eID = $request->getParsedBody()['eID'] ?? $request->getQueryParams()['eID'] ?? null;
  62
  63         if ($eID === null) {
  64             return $handler->handle($request);
  65         }
  66
  67         // Remove any output produced until now
  68         ob_clean();
  69
  70         $target = $GLOBALS['TYPO3_CONF_VARS']['FE']['eID_include'][$eID] ?? null;
  71         if (empty($target)) {
  72             return (new Response())->withStatus(404, 'eID not registered');
  73         }
  74
  75         $request = $request->withAttribute('target', $target);
  76         return $this->dispatcher->dispatch($request) ?? new NullResponse();
  77     }
  78 }