TYPO3 v15 dev-main snapshot ()

Classes/Middleware/BackendRouteInitialization.php

@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * 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!
+ */
+
+namespace TYPO3\CMS\Backend\Middleware;
+
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use TYPO3\CMS\Backend\Routing\Exception\ResourceNotFoundException;
+use TYPO3\CMS\Backend\Routing\Router;
+use TYPO3\CMS\Backend\Routing\UriBuilder;
+use TYPO3\CMS\Core\Http\Error\MethodNotAllowedException;
+use TYPO3\CMS\Core\Http\RedirectResponse;
+use TYPO3\CMS\Core\Routing\RequestContextFactory;
+
+/**
+ * Injects the Router and tries to match the current request with a
+ * configured backend route. The available backend routes were added
+ * in the corresponding dependency injection factories, which load
+ * and process the module and route configuration files
+ *
+ * - Configuration/Backend/{,Ajax}Routes.php
+ * - Configuration/Backend/Modules.php
+ *
+ * from each extension.
+ *
+ * After this middleware, a "Route" object is available as attribute in the
+ * Request object.
+ *
+ * @internal
+ */
+readonly class BackendRouteInitialization implements MiddlewareInterface
+{
+    public function __construct(
+        protected Router $router,
+        protected UriBuilder $uriBuilder,
+        protected RequestContextFactory $requestContextFactory,
+    ) {}
+
+    /**
+     * Resolve the route based on the URL path part, and also resolves a Route object
+     */
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        $this->uriBuilder->setRequestContext($this->requestContextFactory->fromBackendRequest($request));
+
+        try {
+            $routeResult = $this->router->matchResult($request);
+            $request = $request->withAttribute('routing', $routeResult);
+            $request = $request->withAttribute('route', $routeResult->getRoute());
+        } catch (MethodNotAllowedException $e) {
+            return $e->createResponse();
+        } catch (ResourceNotFoundException $e) {
+            // Route not found in system
+            $uri = $this->uriBuilder->buildUriFromRoute('login');
+            return new RedirectResponse($uri);
+        }
+
+        return $handler->handle($request);
+    }
+}