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

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+<?php
+namespace TYPO3\CMS\Install\Http;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Context\DateTimeAspect;
+use TYPO3\CMS\Core\Context\UserAspect;
+use TYPO3\CMS\Core\Context\VisibilityAspect;
+use TYPO3\CMS\Core\Context\WorkspaceAspect;
+use TYPO3\CMS\Core\Http\AbstractApplication;
+use TYPO3\CMS\Core\Http\RequestHandlerInterface;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Entry point for the TYPO3 Install Tool
+ * @internal This class is only meant to be used within EXT:install and is not part of the TYPO3 Core API.
+ */
+class Application extends AbstractApplication
+{
+    /**
+     * All available request handlers that can handle an install tool request
+     * @var array
+     */
+    protected $availableRequestHandlers = [];
+
+    /**
+     * Construct Application
+     *
+     * @param RequestHandlerInterface $requestHandler
+     * @param RequestHandlerInterface $installerRequestHandler
+     */
+    public function __construct(
+        RequestHandlerInterface $requestHandler,
+        RequestHandlerInterface $installerRequestHandler
+    ) {
+        $this->availableRequestHandlers = [
+            $requestHandler,
+            $installerRequestHandler
+        ];
+    }
+
+    /**
+     * @param ServerRequestInterface $request
+     * @return ResponseInterface
+     */
+    protected function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $this->initializeContext();
+        foreach ($this->availableRequestHandlers as $handler) {
+            if ($handler->canHandleRequest($request)) {
+                return $handler->handle($request)
+                    ->withHeader('X-Frame-Options', 'SAMEORIGIN');
+            }
+        }
+        throw new \TYPO3\CMS\Core\Exception('No suitable request handler found.', 1518448686);
+    }
+
+    /**
+     * Initializes the Context used for accessing data and finding out the current state of the application
+     * Will be moved to a DI-like concept once introduced, for now, this is a singleton
+     */
+    protected function initializeContext()
+    {
+        GeneralUtility::makeInstance(Context::class, [
+            'date' => new DateTimeAspect(new \DateTimeImmutable('@' . $GLOBALS['EXEC_TIME'])),
+            'visibility' => new VisibilityAspect(true, true, true),
+            'workspace' => new WorkspaceAspect(0),
+            'backend.user' => new UserAspect(),
+        ]);
+    }
+}