Added option to redirect https requests to http via Part-DB

This is especially useful for the heroku demo instance, where the webserver can not do the automatic redirect

src/EventSubscriber/RedirectToHttpsSubscriber.php

@@ -0,0 +1,72 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2024 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+
+namespace App\EventSubscriber;
+
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpKernel\Event\RequestEvent;
+use Symfony\Component\HttpKernel\KernelEvents;
+use Symfony\Component\Security\Http\HttpUtils;
+
+/**
+ * The purpose of this event listener is (if enabled) to redirect all requests to https.
+ */
+final class RedirectToHttpsSubscriber implements EventSubscriberInterface
+{
+
+    public function __construct(
+        #[Autowire('env(bool:REDIRECT_TO_HTTPS)')]
+        private readonly bool $enabled,
+        private readonly HttpUtils $httpUtils)
+    {
+    }
+
+    public static function getSubscribedEvents(): array
+    {
+        return [
+            KernelEvents::REQUEST => ['onKernelRequest', 0],
+        ];
+    }
+
+    public function onKernelRequest(RequestEvent $event): void
+    {
+        //If the feature is disabled, or we are not the main request, we do nothing
+        if (!$this->enabled || !$event->isMainRequest()) {
+            return;
+        }
+
+
+        $request = $event->getRequest();
+
+        //If the request is already https, we do nothing
+        if ($request->isSecure()) {
+            return;
+        }
+
+
+        //Change the request to https
+        $new_url = str_replace('http://', 'https://' ,$request->getUri());
+        $event->setResponse($this->httpUtils->createRedirectResponse($event->getRequest(), $new_url));
+    }
+}