feat: add ICloudIdResolver

apps/federatedfilesharing/tests/AddressHandlerTest.php

@@ -34,11 +34,11 @@ protected function setUp(): void {
 		$this->contactsManager = $this->createMock(IManager::class);
 
 		$this->cloudIdManager = new CloudIdManager(
+			$this->createMock(ICacheFactory::class),
+			$this->createMock(IEventDispatcher::class),
 			$this->contactsManager,
 			$this->urlGenerator,
 			$this->createMock(IUserManager::class),
-			$this->createMock(ICacheFactory::class),
-			$this->createMock(IEventDispatcher::class)
 		);
 
 		$this->addressHandler = new AddressHandler($this->urlGenerator, $this->il10n, $this->cloudIdManager);

apps/federatedfilesharing/tests/Controller/MountPublicLinkControllerTest.php

@@ -64,11 +64,11 @@ protected function setUp(): void {
 		$this->clientService = $this->createMock(IClientService::class);
 		$this->contactsManager = $this->createMock(IContactsManager::class);
 		$this->cloudIdManager = new CloudIdManager(
+			$this->createMock(ICacheFactory::class),
+			$this->createMock(IEventDispatcher::class),
 			$this->contactsManager,
 			$this->createMock(IURLGenerator::class),
 			$this->userManager,
-			$this->createMock(ICacheFactory::class),
-			$this->createMock(IEventDispatcher::class)
 		);
 
 		$this->controller = new MountPublicLinkController(

apps/federatedfilesharing/tests/FederatedShareProviderTest.php

@@ -74,11 +74,11 @@ protected function setUp(): void {
 		$this->addressHandler = $this->createMock(AddressHandler::class);
 		$this->contactsManager = $this->createMock(IContactsManager::class);
 		$this->cloudIdManager = new CloudIdManager(
+			$this->createMock(ICacheFactory::class),
+			$this->createMock(IEventDispatcher::class),
 			$this->contactsManager,
 			$this->createMock(IURLGenerator::class),
 			$this->userManager,
-			$this->createMock(ICacheFactory::class),
-			$this->createMock(IEventDispatcher::class)
 		);
 		$this->gsConfig = $this->createMock(\OCP\GlobalScale\IConfig::class);
 

apps/files_sharing/tests/External/CacheTest.php

@@ -54,11 +54,11 @@ protected function setUp(): void {
 		$this->contactsManager = $this->createMock(IManager::class);
 
 		$this->cloudIdManager = new CloudIdManager(
+			$this->createMock(ICacheFactory::class),
+			$this->createMock(IEventDispatcher::class),
 			$this->contactsManager,
 			$this->createMock(IURLGenerator::class),
 			$this->createMock(IUserManager::class),
-			$this->createMock(ICacheFactory::class),
-			$this->createMock(IEventDispatcher::class)
 		);
 		$this->remoteUser = $this->getUniqueID('remoteuser');
 

apps/files_sharing/tests/External/ManagerTest.php

@@ -90,11 +90,11 @@ protected function setUp(): void {
 		$this->testMountProvider = new MountProvider(Server::get(IDBConnection::class), function () {
 			return $this->manager;
 		}, new CloudIdManager(
+			$this->createMock(ICacheFactory::class),
+			$this->createMock(IEventDispatcher::class),
 			$this->contactsManager,
 			$this->createMock(IURLGenerator::class),
 			$this->userManager,
-			$this->createMock(ICacheFactory::class),
-			$this->createMock(IEventDispatcher::class)
 		));
 
 		$group1 = $this->createMock(IGroup::class);

lib/composer/composer/autoload_classmap.php

@@ -367,6 +367,7 @@
     'OCP\\Federation\\ICloudFederationShare' => $baseDir . '/lib/public/Federation/ICloudFederationShare.php',
     'OCP\\Federation\\ICloudId' => $baseDir . '/lib/public/Federation/ICloudId.php',
     'OCP\\Federation\\ICloudIdManager' => $baseDir . '/lib/public/Federation/ICloudIdManager.php',
+    'OCP\\Federation\\ICloudIdResolver' => $baseDir . '/lib/public/Federation/ICloudIdResolver.php',
     'OCP\\Files' => $baseDir . '/lib/public/Files.php',
     'OCP\\FilesMetadata\\AMetadataEvent' => $baseDir . '/lib/public/FilesMetadata/AMetadataEvent.php',
     'OCP\\FilesMetadata\\Event\\MetadataBackgroundEvent' => $baseDir . '/lib/public/FilesMetadata/Event/MetadataBackgroundEvent.php',

lib/composer/composer/autoload_static.php

@@ -408,6 +408,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OCP\\Federation\\ICloudFederationShare' => __DIR__ . '/../../..' . '/lib/public/Federation/ICloudFederationShare.php',
         'OCP\\Federation\\ICloudId' => __DIR__ . '/../../..' . '/lib/public/Federation/ICloudId.php',
         'OCP\\Federation\\ICloudIdManager' => __DIR__ . '/../../..' . '/lib/public/Federation/ICloudIdManager.php',
+        'OCP\\Federation\\ICloudIdResolver' => __DIR__ . '/../../..' . '/lib/public/Federation/ICloudIdResolver.php',
         'OCP\\Files' => __DIR__ . '/../../..' . '/lib/public/Files.php',
         'OCP\\FilesMetadata\\AMetadataEvent' => __DIR__ . '/../../..' . '/lib/public/FilesMetadata/AMetadataEvent.php',
         'OCP\\FilesMetadata\\Event\\MetadataBackgroundEvent' => __DIR__ . '/../../..' . '/lib/public/FilesMetadata/Event/MetadataBackgroundEvent.php',

lib/private/Federation/CloudIdManager.php

@@ -14,34 +14,27 @@
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\Federation\ICloudId;
 use OCP\Federation\ICloudIdManager;
+use OCP\Federation\ICloudIdResolver;
 use OCP\ICache;
 use OCP\ICacheFactory;
 use OCP\IURLGenerator;
 use OCP\IUserManager;
 use OCP\User\Events\UserChangedEvent;
 
 class CloudIdManager implements ICloudIdManager {
-	/** @var IManager */
-	private $contactsManager;
-	/** @var IURLGenerator */
-	private $urlGenerator;
-	/** @var IUserManager */
-	private $userManager;
 	private ICache $memCache;
 	private ICache $displayNameCache;
-	/** @var array[] */
 	private array $cache = [];
+	/** @var ICloudIdResolver[] */
+	private array $cloudIdResolvers = [];
 
 	public function __construct(
-		IManager $contactsManager,
-		IURLGenerator $urlGenerator,
-		IUserManager $userManager,
 		ICacheFactory $cacheFactory,
 		IEventDispatcher $eventDispatcher,
+		private IManager $contactsManager,
+		private IURLGenerator $urlGenerator,
+		private IUserManager $userManager,
 	) {
-		$this->contactsManager = $contactsManager;
-		$this->urlGenerator = $urlGenerator;
-		$this->userManager = $userManager;
 		$this->memCache = $cacheFactory->createDistributed('cloud_id_');
 		$this->displayNameCache = $cacheFactory->createDistributed('cloudid_name_');
 		$eventDispatcher->addListener(UserChangedEvent::class, [$this, 'handleUserEvent']);
@@ -81,6 +74,12 @@ public function handleCardEvent(Event $event): void {
 	public function resolveCloudId(string $cloudId): ICloudId {
 		// TODO magic here to get the url and user instead of just splitting on @
 
+		foreach ($this->cloudIdResolvers as $resolver) {
+			if ($resolver->isValidCloudId($cloudId)) {
+				return $resolver->resolveCloudId($cloudId);
+			}
+		}
+
 		if (!$this->isValidCloudId($cloudId)) {
 			throw new \InvalidArgumentException('Invalid cloud id');
 		}
@@ -251,6 +250,26 @@ protected function stripShareLinkFragments(string $remote): string {
 	 * @return bool
 	 */
 	public function isValidCloudId(string $cloudId): bool {
-		return str_contains($cloudId, '@');
+		foreach ($this->cloudIdResolvers as $resolver) {
+			if ($resolver->isValidCloudId($cloudId)) {
+				return true;
+			}
+		}
+
+		return strpos($cloudId, '@') !== false;
+	}
+
+	public function createCloudId(string $id, string $user, string $remote, ?string $displayName = null): ICloudId {
+		return new CloudId($id, $user, $remote, $displayName);
+	}
+
+	public function registerCloudIdResolver(ICloudIdResolver $resolver): void {
+		array_unshift($this->cloudIdResolvers, $resolver);
+	}
+
+	public function unregisterCloudIdResolver(ICloudIdResolver $resolver): void {
+		if (($key = array_search($resolver, $this->cloudIdResolvers)) !== false) {
+			array_splice($this->cloudIdResolvers, $key, 1);
+		}
 	}
 }

lib/private/Server.php

@@ -1161,11 +1161,11 @@ public function __construct($webRoot, \OC\Config $config) {
 
 		$this->registerService(ICloudIdManager::class, function (ContainerInterface $c) {
 			return new CloudIdManager(
+				$c->get(ICacheFactory::class),
+				$c->get(IEventDispatcher::class),
 				$c->get(\OCP\Contacts\IManager::class),
 				$c->get(IURLGenerator::class),
 				$c->get(IUserManager::class),
-				$c->get(ICacheFactory::class),
-				$c->get(IEventDispatcher::class),
 			);
 		});
 

lib/public/Federation/ICloudIdManager.php

@@ -8,11 +8,14 @@
  */
 namespace OCP\Federation;
 
+use OCP\AppFramework\Attribute\Consumable;
+
 /**
  * Interface for resolving federated cloud ids
  *
  * @since 12.0.0
  */
+#[Consumable(since: '12.0.0')]
 interface ICloudIdManager {
 	/**
 	 * @param string $cloudId
@@ -55,4 +58,28 @@ public function isValidCloudId(string $cloudId): bool;
 	 * @since 30.0.0 - Optional parameter $httpsOnly was added
 	 */
 	public function removeProtocolFromUrl(string $url, bool $httpsOnly = false): string;
+
+	/**
+	 * @param string $id The remote cloud id
+	 * @param string $user The user id on the remote server
+	 * @param string $remote The base address of the remote server
+	 * @param ?string $displayName The displayname of the remote user
+	 *
+	 * @since 32.0.0
+	 */
+	public function createCloudId(string $id, string $user, string $remote, ?string $displayName = null): ICloudId;
+
+	/**
+	 * @param $resolver The cloud id resolver to register
+	 *
+	 * @since 32.0.0
+	 */
+	public function registerCloudIdResolver(ICloudIdResolver $resolver): void;
+
+	/**
+	 * @param $resolver The cloud id resolver to unregister
+	 *
+	 * @since 32.0.0
+	 */
+	public function unregisterCloudIdResolver(ICloudIdResolver $resolver): void;
 }

lib/public/Federation/ICloudIdResolver.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+namespace OCP\Federation;
+
+use OCP\AppFramework\Attribute\Consumable;
+use OCP\AppFramework\Attribute\Implementable;
+
+/**
+ * Interface for resolving federated cloud ids
+ *
+ * @since 32.0.0
+ */
+#[Consumable(since: '32.0.0')]
+#[Implementable(since: '32.0.0')]
+interface ICloudIdResolver {
+	/**
+	 * @param string $cloudId
+	 * @return ICloudId
+	 * @throws \InvalidArgumentException
+	 *
+	 * @since 32.0.0
+	 */
+	public function resolveCloudId(string $cloudId): ICloudId;
+
+	/**
+	 * Check if the input is a correctly formatted cloud id
+	 *
+	 * @param string $cloudId
+	 * @return bool
+	 *
+	 * @since 32.0.0
+	 */
+	public function isValidCloudId(string $cloudId): bool;
+}

tests/lib/Collaboration/Collaborators/MailPluginTest.php

@@ -64,11 +64,11 @@ protected function setUp(): void {
 		$this->userSession = $this->createMock(IUserSession::class);
 		$this->mailer = $this->createMock(IMailer::class);
 		$this->cloudIdManager = new CloudIdManager(
+			$this->createMock(ICacheFactory::class),
+			$this->createMock(IEventDispatcher::class),
 			$this->contactsManager,
 			$this->createMock(IURLGenerator::class),
 			$this->createMock(IUserManager::class),
-			$this->createMock(ICacheFactory::class),
-			$this->createMock(IEventDispatcher::class)
 		);
 
 		$this->searchResult = new SearchResult();

tests/lib/Collaboration/Collaborators/RemotePluginTest.php

@@ -49,11 +49,11 @@ protected function setUp(): void {
 		$this->config = $this->createMock(IConfig::class);
 		$this->contactsManager = $this->createMock(IManager::class);
 		$this->cloudIdManager = new CloudIdManager(
+			$this->createMock(ICacheFactory::class),
+			$this->createMock(IEventDispatcher::class),
 			$this->contactsManager,
 			$this->createMock(IURLGenerator::class),
 			$this->createMock(IUserManager::class),
-			$this->createMock(ICacheFactory::class),
-			$this->createMock(IEventDispatcher::class)
 		);
 		$this->searchResult = new SearchResult();
 	}

tests/lib/Federation/CloudIdManagerTest.php

@@ -47,11 +47,11 @@ protected function setUp(): void {
 			->willReturn(new ArrayCache(''));
 
 		$this->cloudIdManager = new CloudIdManager(
+			$this->cacheFactory,
+			$this->createMock(IEventDispatcher::class),
 			$this->contactsManager,
 			$this->urlGenerator,
 			$this->userManager,
-			$this->cacheFactory,
-			$this->createMock(IEventDispatcher::class)
 		);
 		$this->overwriteService(ICloudIdManager::class, $this->cloudIdManager);
 	}