feat(middleware): Filter federation supported things on the middleware

Signed-off-by: Joas Schilling <coding@schilljs.com>

lib/Controller/ChatController.php

@@ -34,6 +34,7 @@
 use OCA\Talk\Federation\Authenticator;
 use OCA\Talk\GuestManager;
 use OCA\Talk\MatterbridgeManager;
+use OCA\Talk\Middleware\Attribute\FederationSupported;
 use OCA\Talk\Middleware\Attribute\RequireLoggedInParticipant;
 use OCA\Talk\Middleware\Attribute\RequireModeratorOrNoLobby;
 use OCA\Talk\Middleware\Attribute\RequireModeratorParticipant;
@@ -199,6 +200,7 @@ protected function parseCommentToResponse(IComment $comment, ?Message $parentMes
 	 * 413: Message too long
 	 * 429: Mention rate limit exceeded (guests only)
 	 */
+	#[FederationSupported]
 	#[PublicPage]
 	#[RequireModeratorOrNoLobby]
 	#[RequireParticipant]
@@ -1159,6 +1161,7 @@ protected function getMessagesForRoom(array $messageIds): array {
 	 *
 	 * 200: List of mention suggestions returned
 	 */
+	#[FederationSupported]
 	#[PublicPage]
 	#[RequireModeratorOrNoLobby]
 	#[RequireParticipant]

lib/Controller/RoomController.php

@@ -41,6 +41,7 @@
 use OCA\Talk\GuestManager;
 use OCA\Talk\Manager;
 use OCA\Talk\MatterbridgeManager;
+use OCA\Talk\Middleware\Attribute\FederationSupported;
 use OCA\Talk\Middleware\Attribute\RequireLoggedInModeratorParticipant;
 use OCA\Talk\Middleware\Attribute\RequireLoggedInParticipant;
 use OCA\Talk\Middleware\Attribute\RequireModeratorOrNoLobby;
@@ -833,6 +834,7 @@ public function deleteRoom(): DataResponse {
 	 * 200: Participants returned
 	 * 403: Missing permissions for getting participants
 	 */
+	#[FederationSupported]
 	#[PublicPage]
 	#[RequireModeratorOrNoLobby]
 	#[RequireParticipant]

lib/Middleware/Attribute/FederationSupported.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2024 Joas Schilling <coding@schilljs.com>
+ *
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+namespace OCA\Talk\Middleware\Attribute;
+
+use Attribute;
+use OCA\Talk\Middleware\InjectionMiddleware;
+
+/**
+ * @see InjectionMiddleware::getRoom()
+ */
+#[Attribute(Attribute::TARGET_METHOD)]
+class FederationSupported {
+}

lib/Middleware/Exceptions/FederationUnsupportedFeatureException.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2023, Joas Schilling <coding@schilljs.com>
+ *
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Talk\Middleware\Exceptions;
+
+use OCP\AppFramework\Http;
+
+class FederationUnsupportedFeatureException extends \Exception {
+	public function __construct(
+	) {
+		parent::__construct('Feature is unsupported for federation', Http::STATUS_UPGRADE_REQUIRED);
+	}
+}

lib/Middleware/InjectionMiddleware.php

@@ -29,6 +29,7 @@
 use OCA\Talk\Exceptions\RoomNotFoundException;
 use OCA\Talk\Federation\Authenticator;
 use OCA\Talk\Manager;
+use OCA\Talk\Middleware\Attribute\FederationSupported;
 use OCA\Talk\Middleware\Attribute\RequireLoggedInModeratorParticipant;
 use OCA\Talk\Middleware\Attribute\RequireLoggedInParticipant;
 use OCA\Talk\Middleware\Attribute\RequireModeratorOrNoLobby;
@@ -38,6 +39,7 @@
 use OCA\Talk\Middleware\Attribute\RequirePermission;
 use OCA\Talk\Middleware\Attribute\RequireReadWriteConversation;
 use OCA\Talk\Middleware\Attribute\RequireRoom;
+use OCA\Talk\Middleware\Exceptions\FederationUnsupportedFeatureException;
 use OCA\Talk\Middleware\Exceptions\LobbyException;
 use OCA\Talk\Middleware\Exceptions\NotAModeratorException;
 use OCA\Talk\Middleware\Exceptions\ReadOnlyException;
@@ -76,6 +78,7 @@ public function __construct(
 	}
 
 	/**
+	 * @throws FederationUnsupportedFeatureException
 	 * @throws LobbyException
 	 * @throws NotAModeratorException
 	 * @throws ParticipantNotFoundException
@@ -117,6 +120,11 @@ public function beforeController(Controller $controller, string $methodName): vo
 			$this->getRoom($controller);
 		}
 
+		if (empty($reflectionMethod->getAttributes(FederationSupported::class))) {
+			// When federation is not supported, the room needs to be local
+			$this->checkFederationSupport($controller);
+		}
+
 		if (!empty($reflectionMethod->getAttributes(RequireReadWriteConversation::class))) {
 			$this->checkReadOnlyState($controller);
 		}
@@ -214,6 +222,17 @@ protected function getLoggedInOrGuest(AEnvironmentAwareController $controller, b
 		}
 	}
 
+	/**
+	 * @param AEnvironmentAwareController $controller
+	 * @throws FederationUnsupportedFeatureException
+	 */
+	protected function checkFederationSupport(AEnvironmentAwareController $controller): void {
+		$room = $controller->getRoom();
+		if (!$room instanceof Room || $room->getRemoteServer() !== '') {
+			throw new FederationUnsupportedFeatureException();
+		}
+	}
+
 	/**
 	 * @param AEnvironmentAwareController $controller
 	 * @throws ReadOnlyException
@@ -302,6 +321,14 @@ public function afterException(Controller $controller, string $methodName, \Exce
 			return new RedirectResponse($this->url->linkToDefaultPageUrl());
 		}
 
+		if ($exception instanceof FederationUnsupportedFeatureException) {
+			if ($controller instanceof OCSController) {
+				throw new OCSException('', Http::STATUS_NOT_ACCEPTABLE);
+			}
+
+			return new RedirectResponse($this->url->linkToDefaultPageUrl());
+		}
+
 		if ($exception instanceof LobbyException) {
 			if ($controller instanceof OCSController) {
 				throw new OCSException('', Http::STATUS_PRECONDITION_FAILED);