Properly cleanup entries of WebAuthn on user deletion

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

core/Application.php

@@ -38,6 +38,7 @@ use OC\Authentication\Listeners\RemoteWipeEmailListener;
 use OC\Authentication\Listeners\RemoteWipeNotificationsListener;
 use OC\Authentication\Listeners\UserDeletedStoreCleanupListener;
 use OC\Authentication\Listeners\UserDeletedTokenCleanupListener;
+use OC\Authentication\Listeners\UserDeletedWebAuthnCleanupListener;
 use OC\Authentication\Notifications\Notifier as AuthenticationNotifier;
 use OC\Core\Notification\CoreNotifier;
 use OC\DB\MissingColumnInformation;
@@ -264,5 +265,6 @@ class Application extends App {
 		$eventDispatcher->addServiceListener(RemoteWipeFinished::class, RemoteWipeEmailListener::class);
 		$eventDispatcher->addServiceListener(UserDeletedEvent::class, UserDeletedStoreCleanupListener::class);
 		$eventDispatcher->addServiceListener(UserDeletedEvent::class, UserDeletedTokenCleanupListener::class);
+		$eventDispatcher->addServiceListener(UserDeletedEvent::class, UserDeletedWebAuthnCleanupListener::class);
 	}
 }

lib/composer/composer/autoload_classmap.php

@@ -667,6 +667,7 @@ return array(
     'OC\\Authentication\\Listeners\\RemoteWipeNotificationsListener' => $baseDir . '/lib/private/Authentication/Listeners/RemoteWipeNotificationsListener.php',
     'OC\\Authentication\\Listeners\\UserDeletedStoreCleanupListener' => $baseDir . '/lib/private/Authentication/Listeners/UserDeletedStoreCleanupListener.php',
     'OC\\Authentication\\Listeners\\UserDeletedTokenCleanupListener' => $baseDir . '/lib/private/Authentication/Listeners/UserDeletedTokenCleanupListener.php',
+    'OC\\Authentication\\Listeners\\UserDeletedWebAuthnCleanupListener' => $baseDir . '/lib/private/Authentication/Listeners/UserDeletedWebAuthnCleanupListener.php',
     'OC\\Authentication\\Listeners\\UserLoggedInListener' => $baseDir . '/lib/private/Authentication/Listeners/UserLoggedInListener.php',
     'OC\\Authentication\\LoginCredentials\\Credentials' => $baseDir . '/lib/private/Authentication/LoginCredentials/Credentials.php',
     'OC\\Authentication\\LoginCredentials\\Store' => $baseDir . '/lib/private/Authentication/LoginCredentials/Store.php',

lib/composer/composer/autoload_static.php

@@ -696,6 +696,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OC\\Authentication\\Listeners\\RemoteWipeNotificationsListener' => __DIR__ . '/../../..' . '/lib/private/Authentication/Listeners/RemoteWipeNotificationsListener.php',
         'OC\\Authentication\\Listeners\\UserDeletedStoreCleanupListener' => __DIR__ . '/../../..' . '/lib/private/Authentication/Listeners/UserDeletedStoreCleanupListener.php',
         'OC\\Authentication\\Listeners\\UserDeletedTokenCleanupListener' => __DIR__ . '/../../..' . '/lib/private/Authentication/Listeners/UserDeletedTokenCleanupListener.php',
+        'OC\\Authentication\\Listeners\\UserDeletedWebAuthnCleanupListener' => __DIR__ . '/../../..' . '/lib/private/Authentication/Listeners/UserDeletedWebAuthnCleanupListener.php',
         'OC\\Authentication\\Listeners\\UserLoggedInListener' => __DIR__ . '/../../..' . '/lib/private/Authentication/Listeners/UserLoggedInListener.php',
         'OC\\Authentication\\LoginCredentials\\Credentials' => __DIR__ . '/../../..' . '/lib/private/Authentication/LoginCredentials/Credentials.php',
         'OC\\Authentication\\LoginCredentials\\Store' => __DIR__ . '/../../..' . '/lib/private/Authentication/LoginCredentials/Store.php',

lib/private/Authentication/Listeners/UserDeletedWebAuthnCleanupListener.php

@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2021 Morris Jobke <hey@morrisjobke.de>
+ *
+ * @author Morris Jobke <hey@morrisjobke.de>
+ *
+ * @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 OC\Authentication\Listeners;
+
+use OC\Authentication\WebAuthn\Db\PublicKeyCredentialMapper;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\User\Events\UserDeletedEvent;
+
+class UserDeletedWebAuthnCleanupListener implements IEventListener {
+
+	/** @var PublicKeyCredentialMapper */
+	private $credentialMapper;
+
+	public function __construct(PublicKeyCredentialMapper $credentialMapper) {
+		$this->credentialMapper = $credentialMapper;
+	}
+
+	public function handle(Event $event): void {
+		if (!($event instanceof UserDeletedEvent)) {
+			return;
+		}
+
+		$this->credentialMapper->deleteByUid($event->getUser()->getUID());
+	}
+}

lib/private/Authentication/WebAuthn/Db/PublicKeyCredentialMapper.php

@@ -81,4 +81,17 @@ class PublicKeyCredentialMapper extends QBMapper {
 
 		return $this->findEntity($qb);
 	}
+
+	/**
+	 * @throws \OCP\DB\Exception
+	 */
+	public function deleteByUid(string $uid) {
+		$qb = $this->db->getQueryBuilder();
+
+		$qb->delete($this->getTableName())
+			->where(
+				$qb->expr()->eq('uid', $qb->createNamedParameter($uid))
+			);
+		$qb->executeStatement();
+	}
 }