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 use TYPO3\CMS\Core\Utility\GeneralUtility;
  19
  20 /**
  21  * Entry point for the TYPO3 Backend (HTTP requests)
  22  */
  23 class Application implements ApplicationInterface {
  24
  25         /**
  26          * @var Bootstrap
  27          */
  28         protected $bootstrap;
  29
  30         /**
  31          * @var string
  32          */
  33         protected $entryPointPath = 'typo3/';
  34
  35         /**
  36          * @var \Psr\Http\Message\ServerRequestInterface
  37          */
  38         protected $request;
  39
  40         /**
  41          * All available request handlers that can handle backend requests (non-CLI)
  42          * @var array
  43          */
  44         protected $availableRequestHandlers = array(
  45                 \TYPO3\CMS\Backend\Http\RequestHandler::class,
  46                 \TYPO3\CMS\Backend\Http\BackendModuleRequestHandler::class,
  47                 \TYPO3\CMS\Backend\Http\AjaxRequestHandler::class
  48         );
  49
  50         /**
  51          * Constructor setting up legacy constant and register available Request Handlers
  52          *
  53          * @param \Composer\Autoload\ClassLoader|\Helhum\ClassAliasLoader\Composer\ClassAliasLoader $classLoader an instance of the class loader
  54          */
  55         public function __construct($classLoader) {
  56                 $this->defineLegacyConstants();
  57
  58                 $this->bootstrap = Bootstrap::getInstance()
  59                         ->initializeClassLoader($classLoader)
  60                         ->baseSetup($this->entryPointPath);
  61
  62                 // can be done here after the base setup is done
  63                 $this->defineAdditionalEntryPointRelatedConstants();
  64
  65                 // Redirect to install tool if base configuration is not found
  66                 if (!$this->bootstrap->checkIfEssentialConfigurationExists()) {
  67                         $this->bootstrap->redirectToInstallTool($this->entryPointPath);
  68                 }
  69
  70                 foreach ($this->availableRequestHandlers as $requestHandler) {
  71                         $this->bootstrap->registerRequestHandlerImplementation($requestHandler);
  72                 }
  73
  74                 $this->request = \TYPO3\CMS\Core\Http\ServerRequestFactory::fromGlobals();
  75                 // see below when this option is set
  76                 if ($GLOBALS['TYPO3_AJAX']) {
  77                         $this->request = $this->request->withAttribute('isAjaxRequest', TRUE);
  78                 } elseif (isset($this->request->getQueryParams()['M'])) {
  79                         $this->request = $this->request->withAttribute('isModuleRequest', TRUE);
  80                 }
  81
  82                 $this->bootstrap->configure();
  83         }
  84
  85         /**
  86          * Set up the application and shut it down afterwards
  87          *
  88          * @param callable $execute
  89          * @return void
  90          */
  91         public function run(callable $execute = NULL) {
  92                 $this->bootstrap->handleRequest($this->request);
  93
  94                 if ($execute !== NULL) {
  95                         if ($execute instanceof \Closure) {
  96                                 $execute->bindTo($this);
  97                         }
  98                         call_user_func($execute);
  99                 }
 100
 101                 $this->bootstrap->shutdown();
 102         }
 103
 104         /**
 105          * Define constants and variables
 106          */
 107         protected function defineLegacyConstants() {
 108                 define('TYPO3_MODE', 'BE');
 109         }
 110
 111         /**
 112          * Define values that are based on the current script
 113          */
 114         protected function defineAdditionalEntryPointRelatedConstants() {
 115                 $currentScript = GeneralUtility::getIndpEnv('SCRIPT_NAME');
 116
 117                 // Activate "AJAX" handler when called with the GET variable ajaxID
 118                 if (!empty(GeneralUtility::_GET('ajaxID'))) {
 119                         $GLOBALS['TYPO3_AJAX'] = TRUE;
 120                 // The following check is security relevant! DO NOT REMOVE!
 121                 } elseif (empty(GeneralUtility::_GET('M')) && substr($currentScript, -16) === '/typo3/index.php') {
 122                         // Allow backend login to work, disallow module access without authenticated backend user
 123                         define('TYPO3_PROCEED_IF_NO_USER', 1);
 124                 }
 125         }
 126 }