Add create method to extended calendar implementation

Signed-off-by: Anna Larch <anna@nextcloud.com>
Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

apps/dav/composer/composer/autoload_classmap.php

@@ -33,6 +33,8 @@ return array(
     'OCA\\DAV\\CalDAV\\Activity\\Setting\\Calendar' => $baseDir . '/../lib/CalDAV/Activity/Setting/Calendar.php',
     'OCA\\DAV\\CalDAV\\Activity\\Setting\\Event' => $baseDir . '/../lib/CalDAV/Activity/Setting/Event.php',
     'OCA\\DAV\\CalDAV\\Activity\\Setting\\Todo' => $baseDir . '/../lib/CalDAV/Activity/Setting/Todo.php',
+    'OCA\\DAV\\CalDAV\\Auth\\CustomPrincipalPlugin' => $baseDir . '/../lib/CalDAV/Auth/CustomPrincipalPlugin.php',
+    'OCA\\DAV\\CalDAV\\Auth\\PublicPrincipalPlugin' => $baseDir . '/../lib/CalDAV/Auth/PublicPrincipalPlugin.php',
     'OCA\\DAV\\CalDAV\\BirthdayCalendar\\EnablePlugin' => $baseDir . '/../lib/CalDAV/BirthdayCalendar/EnablePlugin.php',
     'OCA\\DAV\\CalDAV\\BirthdayService' => $baseDir . '/../lib/CalDAV/BirthdayService.php',
     'OCA\\DAV\\CalDAV\\CachedSubscription' => $baseDir . '/../lib/CalDAV/CachedSubscription.php',

apps/dav/composer/composer/autoload_static.php

@@ -48,6 +48,8 @@ class ComposerStaticInitDAV
         'OCA\\DAV\\CalDAV\\Activity\\Setting\\Calendar' => __DIR__ . '/..' . '/../lib/CalDAV/Activity/Setting/Calendar.php',
         'OCA\\DAV\\CalDAV\\Activity\\Setting\\Event' => __DIR__ . '/..' . '/../lib/CalDAV/Activity/Setting/Event.php',
         'OCA\\DAV\\CalDAV\\Activity\\Setting\\Todo' => __DIR__ . '/..' . '/../lib/CalDAV/Activity/Setting/Todo.php',
+        'OCA\\DAV\\CalDAV\\Auth\\CustomPrincipalPlugin' => __DIR__ . '/..' . '/../lib/CalDAV/Auth/CustomPrincipalPlugin.php',
+        'OCA\\DAV\\CalDAV\\Auth\\PublicPrincipalPlugin' => __DIR__ . '/..' . '/../lib/CalDAV/Auth/PublicPrincipalPlugin.php',
         'OCA\\DAV\\CalDAV\\BirthdayCalendar\\EnablePlugin' => __DIR__ . '/..' . '/../lib/CalDAV/BirthdayCalendar/EnablePlugin.php',
         'OCA\\DAV\\CalDAV\\BirthdayService' => __DIR__ . '/..' . '/../lib/CalDAV/BirthdayService.php',
         'OCA\\DAV\\CalDAV\\CachedSubscription' => __DIR__ . '/..' . '/../lib/CalDAV/CachedSubscription.php',

apps/dav/lib/CalDAV/Auth/CustomPrincipalPlugin.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * CalDAV App
+ *
+ * @copyright 2021 Anna Larch <anna.larch@gmx.net>
+ *
+ * @author Anna Larch <anna.larch@gmx.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\DAV\CalDAV\Auth;
+
+use Sabre\DAV\Auth\Plugin;
+
+/**
+ * Set a custom principal uri to allow public requests to its calendar
+ */
+class CustomPrincipalPlugin extends Plugin {
+	public function setCurrentPrincipal(?string $currentPrincipal): void {
+		$this->currentPrincipal = $currentPrincipal;
+	}
+}

apps/dav/lib/CalDAV/Auth/PublicPrincipalPlugin.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * CalDAV App
+ *
+ * @copyright 2021 Anna Larch <anna.larch@gmx.net>
+ *
+ * @author Anna Larch <anna.larch@gmx.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\DAV\CalDAV\Auth;
+
+use Sabre\DAV\Auth\Plugin;
+
+/**
+ * Defines the public facing principal option
+ */
+class PublicPrincipalPlugin extends Plugin {
+	public function getCurrentPrincipal(): ?string {
+		return 'principals/system/public';
+	}
+}

apps/dav/lib/CalDAV/CalendarImpl.php

@@ -27,10 +27,14 @@ declare(strict_types=1);
  */
 namespace OCA\DAV\CalDAV;
 
-use OCP\Calendar\ICalendar;
+use OCA\DAV\CalDAV\Auth\CustomPrincipalPlugin;
+use OCA\DAV\CalDAV\InvitationResponse\InvitationResponseServer;
+use OCP\Calendar\Exceptions\CalendarException;
+use OCP\Calendar\ICreateFromString;
 use OCP\Constants;
+use Sabre\DAV\Exception\Conflict;
 
-class CalendarImpl implements ICalendar {
+class CalendarImpl implements ICreateFromString {
 
 	/** @var CalDavBackend */
 	private $backend;
@@ -48,7 +52,8 @@ class CalendarImpl implements ICalendar {
 	 * @param array $calendarInfo
 	 * @param CalDavBackend $backend
 	 */
-	public function __construct(Calendar $calendar, array $calendarInfo,
+	public function __construct(Calendar $calendar,
+								array $calendarInfo,
 								CalDavBackend $backend) {
 		$this->calendar = $calendar;
 		$this->calendarInfo = $calendarInfo;
@@ -120,4 +125,35 @@ class CalendarImpl implements ICalendar {
 
 		return $result;
 	}
+
+	/**
+	 * Create a new calendar event for this calendar
+	 * by way of an ICS string
+	 *
+	 * @param string $name the file name - needs to contan 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);
+
+		/** @var CustomPrincipalPlugin $plugin */
+		$plugin = $server->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
+		$plugin->setCurrentPrincipal($this->calendar->getPrincipalURI());
+
+		$stream = fopen('php://memory', 'rb+');
+		fwrite($stream, $calendarData);
+		rewind($stream);
+		try {
+			$server->server->createFile($name, $stream);
+		} catch (Conflict $e) {
+			throw new CalendarException('Could not create new calendar event: ' . $e->getMessage(), 0, $e);
+		} finally {
+			fclose($stream);
+		}
+	}
 }

apps/dav/lib/CalDAV/InvitationResponse/InvitationResponseServer.php

@@ -26,6 +26,8 @@
 namespace OCA\DAV\CalDAV\InvitationResponse;
 
 use OCA\DAV\AppInfo\PluginManager;
+use OCA\DAV\CalDAV\Auth\CustomPrincipalPlugin;
+use OCA\DAV\CalDAV\Auth\PublicPrincipalPlugin;
 use OCA\DAV\Connector\Sabre\AnonymousOptionsPlugin;
 use OCA\DAV\Connector\Sabre\BlockLegacyClientPlugin;
 use OCA\DAV\Connector\Sabre\CachingTree;
@@ -33,7 +35,6 @@ use OCA\DAV\Connector\Sabre\DavAclPlugin;
 use OCA\DAV\Events\SabrePluginAuthInitEvent;
 use OCA\DAV\RootCollection;
 use OCP\EventDispatcher\IEventDispatcher;
-use Sabre\DAV\Auth\Plugin;
 use Sabre\VObject\ITip\Message;
 
 class InvitationResponseServer {
@@ -44,7 +45,7 @@ class InvitationResponseServer {
 	/**
 	 * InvitationResponseServer constructor.
 	 */
-	public function __construct() {
+	public function __construct(bool $public = true) {
 		$baseUri = \OC::$WEBROOT . '/remote.php/dav/';
 		$logger = \OC::$server->getLogger();
 		/** @var IEventDispatcher $dispatcher */
@@ -62,11 +63,13 @@ class InvitationResponseServer {
 
 		$this->server->addPlugin(new BlockLegacyClientPlugin(\OC::$server->getConfig()));
 		$this->server->addPlugin(new AnonymousOptionsPlugin());
-		$this->server->addPlugin(new class() extends Plugin {
-			public function getCurrentPrincipal() {
-				return 'principals/system/public';
-			}
-		});
+
+		// allow custom principal uri option
+		if ($public) {
+			$this->server->addPlugin(new PublicPrincipalPlugin());
+		} else {
+			$this->server->addPlugin(new CustomPrincipalPlugin());
+		}
 
 		// allow setup of additional auth backends
 		$event = new SabrePluginAuthInitEvent($this->server);

lib/composer/composer/autoload_classmap.php

@@ -116,9 +116,11 @@ return array(
     'OCP\\BackgroundJob\\TimedJob' => $baseDir . '/lib/public/BackgroundJob/TimedJob.php',
     'OCP\\Broadcast\\Events\\IBroadcastEvent' => $baseDir . '/lib/public/Broadcast/Events/IBroadcastEvent.php',
     'OCP\\Calendar\\BackendTemporarilyUnavailableException' => $baseDir . '/lib/public/Calendar/BackendTemporarilyUnavailableException.php',
+    'OCP\\Calendar\\Exceptions\\CalendarException' => $baseDir . '/lib/public/Calendar/Exceptions/CalendarException.php',
     'OCP\\Calendar\\ICalendar' => $baseDir . '/lib/public/Calendar/ICalendar.php',
     'OCP\\Calendar\\ICalendarProvider' => $baseDir . '/lib/public/Calendar/ICalendarProvider.php',
     'OCP\\Calendar\\ICalendarQuery' => $baseDir . '/lib/public/Calendar/ICalendarQuery.php',
+    'OCP\\Calendar\\ICreateFromString' => $baseDir . '/lib/public/Calendar/ICreateFromString.php',
     'OCP\\Calendar\\IManager' => $baseDir . '/lib/public/Calendar/IManager.php',
     'OCP\\Calendar\\IMetadataProvider' => $baseDir . '/lib/public/Calendar/IMetadataProvider.php',
     'OCP\\Calendar\\Resource\\IBackend' => $baseDir . '/lib/public/Calendar/Resource/IBackend.php',

lib/composer/composer/autoload_static.php

@@ -145,9 +145,11 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OCP\\BackgroundJob\\TimedJob' => __DIR__ . '/../../..' . '/lib/public/BackgroundJob/TimedJob.php',
         'OCP\\Broadcast\\Events\\IBroadcastEvent' => __DIR__ . '/../../..' . '/lib/public/Broadcast/Events/IBroadcastEvent.php',
         'OCP\\Calendar\\BackendTemporarilyUnavailableException' => __DIR__ . '/../../..' . '/lib/public/Calendar/BackendTemporarilyUnavailableException.php',
+        'OCP\\Calendar\\Exceptions\\CalendarException' => __DIR__ . '/../../..' . '/lib/public/Calendar/Exceptions/CalendarException.php',
         'OCP\\Calendar\\ICalendar' => __DIR__ . '/../../..' . '/lib/public/Calendar/ICalendar.php',
         'OCP\\Calendar\\ICalendarProvider' => __DIR__ . '/../../..' . '/lib/public/Calendar/ICalendarProvider.php',
         'OCP\\Calendar\\ICalendarQuery' => __DIR__ . '/../../..' . '/lib/public/Calendar/ICalendarQuery.php',
+        'OCP\\Calendar\\ICreateFromString' => __DIR__ . '/../../..' . '/lib/public/Calendar/ICreateFromString.php',
         'OCP\\Calendar\\IManager' => __DIR__ . '/../../..' . '/lib/public/Calendar/IManager.php',
         'OCP\\Calendar\\IMetadataProvider' => __DIR__ . '/../../..' . '/lib/public/Calendar/IMetadataProvider.php',
         'OCP\\Calendar\\Resource\\IBackend' => __DIR__ . '/../../..' . '/lib/public/Calendar/Resource/IBackend.php',

lib/public/Calendar/Exceptions/CalendarException.php

@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2021 Anna Larch <anna.larch@gmx.net>
+ *
+ * @author Anna Larch <anna.larch@gmx.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCP\Calendar\Exceptions;
+
+use Exception;
+
+/**
+ * @since 23.0.0
+ */
+class CalendarException extends Exception {
+}

lib/public/Calendar/ICreateFromString.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * @copyright 2021 Anna Larch <anna.larch@gmx.net>
+ *
+ * @author Anna Larch <anna.larch@gmx.net>
+ *
+ * @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 OCP\Calendar;
+
+use OCP\Calendar\Exceptions\CalendarException;
+
+/**
+ * Extends the current ICalendar interface
+ * to add a public write method
+ *
+ * @since 23.0.0
+ */
+interface ICreateFromString extends ICalendar {
+
+	/**
+	 * @since 23.0.0
+	 *
+	 * @throws CalendarException
+	 */
+	public function createFromString(string $name, string $calendarData): void;
+}