feat: send invitation emails through ICreateFromString

apps/dav/composer/composer/autoload_classmap.php

@@ -60,6 +60,7 @@
     'OCA\\DAV\\CalDAV\\CalendarProvider' => $baseDir . '/../lib/CalDAV/CalendarProvider.php',
     'OCA\\DAV\\CalDAV\\CalendarRoot' => $baseDir . '/../lib/CalDAV/CalendarRoot.php',
     'OCA\\DAV\\CalDAV\\DefaultCalendarValidator' => $baseDir . '/../lib/CalDAV/DefaultCalendarValidator.php',
+    'OCA\\DAV\\CalDAV\\EmbeddedCalDavServer' => $baseDir . '/../lib/CalDAV/EmbeddedCalDavServer.php',
     'OCA\\DAV\\CalDAV\\EventComparisonService' => $baseDir . '/../lib/CalDAV/EventComparisonService.php',
     'OCA\\DAV\\CalDAV\\EventReader' => $baseDir . '/../lib/CalDAV/EventReader.php',
     'OCA\\DAV\\CalDAV\\EventReaderRDate' => $baseDir . '/../lib/CalDAV/EventReaderRDate.php',

apps/dav/composer/composer/autoload_static.php

@@ -75,6 +75,7 @@ class ComposerStaticInitDAV
         'OCA\\DAV\\CalDAV\\CalendarProvider' => __DIR__ . '/..' . '/../lib/CalDAV/CalendarProvider.php',
         'OCA\\DAV\\CalDAV\\CalendarRoot' => __DIR__ . '/..' . '/../lib/CalDAV/CalendarRoot.php',
         'OCA\\DAV\\CalDAV\\DefaultCalendarValidator' => __DIR__ . '/..' . '/../lib/CalDAV/DefaultCalendarValidator.php',
+        'OCA\\DAV\\CalDAV\\EmbeddedCalDavServer' => __DIR__ . '/..' . '/../lib/CalDAV/EmbeddedCalDavServer.php',
         'OCA\\DAV\\CalDAV\\EventComparisonService' => __DIR__ . '/..' . '/../lib/CalDAV/EventComparisonService.php',
         'OCA\\DAV\\CalDAV\\EventReader' => __DIR__ . '/..' . '/../lib/CalDAV/EventReader.php',
         'OCA\\DAV\\CalDAV\\EventReaderRDate' => __DIR__ . '/..' . '/../lib/CalDAV/EventReaderRDate.php',

apps/dav/lib/CalDAV/CalendarImpl.php

@@ -156,19 +156,15 @@ public function isShared(): bool {
 	}
 
 	/**
-	 * Create a new calendar event for this calendar
-	 * by way of an ICS string
-	 *
-	 * @param string $name the file name - needs to contain the .ics ending
-	 * @param string $calendarData a string containing a valid VEVENT ics
-	 *
 	 * @throws CalendarException
 	 */
-	public function createFromString(string $name, string $calendarData): void {
-		$server = new InvitationResponseServer(false);
-
+	private function createFromStringInServer(
+		string $name,
+		string $calendarData,
+		\OCA\DAV\Connector\Sabre\Server $server,
+	): void {
 		/** @var CustomPrincipalPlugin $plugin */
-		$plugin = $server->getServer()->getPlugin('auth');
+		$plugin = $server->getPlugin('auth');
 		// we're working around the previous implementation
 		// that only allowed the public system principal to be used
 		// so set the custom principal here
@@ -184,21 +180,31 @@ public function createFromString(string $name, string $calendarData): void {
 
 		// Force calendar change URI
 		/** @var Schedule\Plugin $schedulingPlugin */
-		$schedulingPlugin = $server->getServer()->getPlugin('caldav-schedule');
+		$schedulingPlugin = $server->getPlugin('caldav-schedule');
 		$schedulingPlugin->setPathOfCalendarObjectChange($fullCalendarFilename);
 
 		$stream = fopen('php://memory', 'rb+');
 		fwrite($stream, $calendarData);
 		rewind($stream);
 		try {
-			$server->getServer()->createFile($fullCalendarFilename, $stream);
+			$server->createFile($fullCalendarFilename, $stream);
 		} catch (Conflict $e) {
 			throw new CalendarException('Could not create new calendar event: ' . $e->getMessage(), 0, $e);
 		} finally {
 			fclose($stream);
 		}
 	}
 
+	public function createFromString(string $name, string $calendarData): void {
+		$server = new EmbeddedCalDavServer(false);
+		$this->createFromStringInServer($name, $calendarData, $server->getServer());
+	}
+
+	public function createFromStringMinimal(string $name, string $calendarData): void {
+		$server = new InvitationResponseServer(false);
+		$this->createFromStringInServer($name, $calendarData, $server->getServer());
+	}
+
 	/**
 	 * @throws CalendarException
 	 */

apps/dav/lib/CalDAV/EmbeddedCalDavServer.php

@@ -0,0 +1,118 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\DAV\CalDAV;
+
+use OCA\DAV\AppInfo\PluginManager;
+use OCA\DAV\CalDAV\Auth\CustomPrincipalPlugin;
+use OCA\DAV\CalDAV\Auth\PublicPrincipalPlugin;
+use OCA\DAV\CalDAV\Publishing\PublishPlugin;
+use OCA\DAV\Connector\Sabre\AnonymousOptionsPlugin;
+use OCA\DAV\Connector\Sabre\BlockLegacyClientPlugin;
+use OCA\DAV\Connector\Sabre\CachingTree;
+use OCA\DAV\Connector\Sabre\DavAclPlugin;
+use OCA\DAV\Connector\Sabre\ExceptionLoggerPlugin;
+use OCA\DAV\Connector\Sabre\LockPlugin;
+use OCA\DAV\Connector\Sabre\MaintenancePlugin;
+use OCA\DAV\Events\SabrePluginAuthInitEvent;
+use OCA\DAV\RootCollection;
+use OCA\Theming\ThemingDefaults;
+use OCP\App\IAppManager;
+use OCP\EventDispatcher\IEventDispatcher;
+use OCP\IAppConfig;
+use OCP\IConfig;
+use OCP\IURLGenerator;
+use OCP\L10N\IFactory as IL10NFactory;
+use OCP\Server;
+use Psr\Log\LoggerInterface;
+
+class EmbeddedCalDavServer {
+	private readonly \OCA\DAV\Connector\Sabre\Server $server;
+
+	public function __construct(bool $public = true) {
+		$baseUri = \OC::$WEBROOT . '/remote.php/dav/';
+		$logger = Server::get(LoggerInterface::class);
+		$dispatcher = Server::get(IEventDispatcher::class);
+		$appConfig = Server::get(IAppConfig::class);
+		$l10nFactory = Server::get(IL10NFactory::class);
+		$l10n = $l10nFactory->get('dav');
+
+		$root = new RootCollection();
+		$this->server = new \OCA\DAV\Connector\Sabre\Server(new CachingTree($root));
+
+		// Add maintenance plugin
+		$this->server->addPlugin(new MaintenancePlugin(Server::get(IConfig::class), $l10n));
+
+		// Set URL explicitly due to reverse-proxy situations
+		$this->server->httpRequest->setUrl($baseUri);
+		$this->server->setBaseUri($baseUri);
+
+		$this->server->addPlugin(new BlockLegacyClientPlugin(
+			Server::get(IConfig::class),
+			Server::get(ThemingDefaults::class),
+		));
+		$this->server->addPlugin(new AnonymousOptionsPlugin());
+
+		// allow custom principal uri option
+		if ($public) {
+			$this->server->addPlugin(new PublicPrincipalPlugin());
+		} else {
+			$this->server->addPlugin(new CustomPrincipalPlugin());
+		}
+
+		// allow setup of additional auth backends
+		$event = new SabrePluginAuthInitEvent($this->server);
+		$dispatcher->dispatchTyped($event);
+
+		$this->server->addPlugin(new ExceptionLoggerPlugin('webdav', $logger));
+		$this->server->addPlugin(new LockPlugin());
+		$this->server->addPlugin(new \Sabre\DAV\Sync\Plugin());
+
+		// acl
+		$acl = new DavAclPlugin();
+		$acl->principalCollectionSet = [
+			'principals/users', 'principals/groups'
+		];
+		$this->server->addPlugin($acl);
+
+		// calendar plugins
+		$this->server->addPlugin(new \OCA\DAV\CalDAV\Plugin());
+		$this->server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
+		$this->server->addPlugin(new \OCA\DAV\CalDAV\Schedule\Plugin(Server::get(IConfig::class), Server::get(LoggerInterface::class), Server::get(DefaultCalendarValidator::class)));
+		$this->server->addPlugin(new \Sabre\CalDAV\Subscriptions\Plugin());
+		$this->server->addPlugin(new \Sabre\CalDAV\Notifications\Plugin());
+		//$this->server->addPlugin(new \OCA\DAV\DAV\Sharing\Plugin($authBackend, \OC::$server->getRequest()));
+		$this->server->addPlugin(new PublishPlugin(
+			Server::get(IConfig::class),
+			Server::get(IURLGenerator::class)
+		));
+		if ($appConfig->getValueString('dav', 'sendInvitations', 'yes') === 'yes') {
+			$this->server->addPlugin(Server::get(\OCA\DAV\CalDAV\Schedule\IMipPlugin::class));
+		}
+
+		// wait with registering these until auth is handled and the filesystem is setup
+		$this->server->on('beforeMethod:*', function () use ($root): void {
+			// register plugins from apps
+			$pluginManager = new PluginManager(
+				\OC::$server,
+				Server::get(IAppManager::class)
+			);
+			foreach ($pluginManager->getAppPlugins() as $appPlugin) {
+				$this->server->addPlugin($appPlugin);
+			}
+			foreach ($pluginManager->getAppCollections() as $appCollection) {
+				$root->addChild($appCollection);
+			}
+		});
+	}
+
+	public function getServer(): \OCA\DAV\Connector\Sabre\Server {
+		return $this->server;
+	}
+}

lib/public/Calendar/ICreateFromString.php

@@ -17,9 +17,31 @@
  */
 interface ICreateFromString extends ICalendar {
 	/**
-	 * @since 23.0.0
+	 * Create an event in this calendar from an ICS string.
+	 *
+	 * @param string $name the file name - needs to contain the .ics ending
+	 * @param string $calendarData a string containing a valid VEVENT ics
 	 *
 	 * @throws CalendarException
+	 *
+	 * @since 23.0.0
+	 *
 	 */
 	public function createFromString(string $name, string $calendarData): void;
+
+	/**
+	 * Create an event in this calendar from an ICS string using a minimal CalDAV server.
+	 * Usually, the createFromString() method should be preferred.
+	 *
+	 * However, in some cases it is useful to not set up a full CalDAV server.
+	 * Missing features include no iMIP plugin, no invitation emails amongst others.
+	 *
+	 * @param string $name the file name - needs to contain the .ics ending
+	 * @param string $calendarData a string containing a valid VEVENT ics
+	 *
+	 * @throws CalendarException
+	 *
+	 * @since 32.0.0
+	 */
+	public function createFromStringMinimal(string $name, string $calendarData): void;
 }