typo3/sysext/backend/Classes/Http/Application.php

   1 <?php
   2 namespace TYPO3\CMS\Backend\Http;
   3
   4 /*
   5  * This file is part of the TYPO3 CMS project.
   6  *
   7  * It is free software; you can redistribute it and/or modify it under
   8  * the terms of the GNU General Public License, either version 2
   9  * of the License, or any later version.
  10  *
  11  * For the full copyright and license information, please read the
  12  * LICENSE.txt file that was distributed with this source code.
  13  *
  14  * The TYPO3 project - inspiring people to share!
  15  */
  16 use TYPO3\CMS\Core\Core\ApplicationInterface;
  17 use TYPO3\CMS\Core\Core\Bootstrap;
  18
  19 /**
  20  * Entry point for the TYPO3 Backend (HTTP requests)
  21  */
  22 class Application implements ApplicationInterface
  23 {
  24     /**
  25      * @var Bootstrap
  26      */
  27     protected $bootstrap;
  28
  29     /**
  30      * Number of subdirectories where the entry script is located, relative to PATH_site
  31      * Usually this is equal to PATH_site = 0
  32      * @var int
  33      */
  34     protected $entryPointLevel = 1;
  35
  36     /**
  37      * All available request handlers that can handle backend requests (non-CLI)
  38      * @var array
  39      */
  40     protected $availableRequestHandlers = [
  41         \TYPO3\CMS\Backend\Http\RequestHandler::class,
  42         \TYPO3\CMS\Backend\Http\AjaxRequestHandler::class
  43     ];
  44
  45     /**
  46      * Constructor setting up legacy constant and register available Request Handlers
  47      *
  48      * @param \Composer\Autoload\ClassLoader $classLoader an instance of the class loader
  49      */
  50     public function __construct($classLoader)
  51     {
  52         $this->defineLegacyConstants();
  53
  54         $this->bootstrap = Bootstrap::getInstance()
  55             ->initializeClassLoader($classLoader)
  56             ->setRequestType(TYPO3_REQUESTTYPE_BE | (isset($_REQUEST['route']) && strpos($_REQUEST['route'], '/ajax/') === 0 ? TYPO3_REQUESTTYPE_AJAX : 0))
  57             ->baseSetup($this->entryPointLevel);
  58
  59         // Redirect to install tool if base configuration is not found
  60         if (!$this->bootstrap->checkIfEssentialConfigurationExists()) {
  61             $this->bootstrap->redirectToInstallTool($this->entryPointLevel);
  62         }
  63
  64         foreach ($this->availableRequestHandlers as $requestHandler) {
  65             $this->bootstrap->registerRequestHandlerImplementation($requestHandler);
  66         }
  67
  68         $this->bootstrap->configure();
  69     }
  70
  71     /**
  72      * Set up the application and shut it down afterwards
  73      *
  74      * @param callable $execute
  75      */
  76     public function run(callable $execute = null)
  77     {
  78         $this->bootstrap->handleRequest(\TYPO3\CMS\Core\Http\ServerRequestFactory::fromGlobals(), 'backend');
  79
  80         if ($execute !== null) {
  81             call_user_func($execute);
  82         }
  83
  84         $this->bootstrap->shutdown();
  85     }
  86
  87     /**
  88      * Define constants and variables
  89      */
  90     protected function defineLegacyConstants()
  91     {
  92         define('TYPO3_MODE', 'BE');
  93     }
  94 }