typo3/sysext/frontend/Classes/Middleware/EidHandler.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 Psr\Http\Message\ResponseInterface;
  19 use Psr\Http\Message\ServerRequestInterface;
  20 use Psr\Http\Server\MiddlewareInterface;
  21 use Psr\Http\Server\RequestHandlerInterface;
  22 use TYPO3\CMS\Core\Exception;
  23 use TYPO3\CMS\Core\Http\DispatcherInterface;
  24 use TYPO3\CMS\Core\Http\NullResponse;
  25 use TYPO3\CMS\Core\Http\Response;
  26
  27 /**
  28  * Lightweight alternative to regular frontend requests; used when $_GET[eID] is set.
  29  * In the future, logic from the EidUtility will be moved to this class, however in most cases
  30  * a custom PSR-15 middleware will be better suited for whatever job the eID functionality does currently.
  31  *
  32  * @internal
  33  */
  34 class EidHandler implements MiddlewareInterface
  35 {
  36     /**
  37      * @var DispatcherInterface
  38      */
  39     protected $dispatcher;
  40
  41     /**
  42      * @param DispatcherInterface $dispatcher
  43      */
  44     public function __construct(DispatcherInterface $dispatcher)
  45     {
  46         $this->dispatcher = $dispatcher;
  47     }
  48
  49     /**
  50      * Dispatches the request to the corresponding eID class or eID script
  51      *
  52      * @param ServerRequestInterface $request
  53      * @param RequestHandlerInterface $handler
  54      * @return ResponseInterface
  55      * @throws Exception
  56      */
  57     public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
  58     {
  59         $eID = $request->getParsedBody()['eID'] ?? $request->getQueryParams()['eID'] ?? null;
  60
  61         if ($eID === null) {
  62             return $handler->handle($request);
  63         }
  64
  65         // Remove any output produced until now
  66         ob_clean();
  67
  68         $target = $GLOBALS['TYPO3_CONF_VARS']['FE']['eID_include'][$eID] ?? null;
  69         if (empty($target)) {
  70             return (new Response())->withStatus(404, 'eID not registered');
  71         }
  72
  73         $request = $request->withAttribute('target', $target);
  74         return $this->dispatcher->dispatch($request) ?? new NullResponse();
  75     }
  76 }