Add dav plugin to expose calendars

Signed-off-by: Julius Härtl <jus@bitgrid.net>

lib/DAV/CalendarObject.php

@@ -0,0 +1,152 @@
+<?php
+/**
+ * @copyright 2020, Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.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\Deck\DAV;
+
+use OCA\Deck\Db\Card;
+use OCA\Deck\Service\CardService;
+use Sabre\VObject\Component\VCalendar;
+
+class CalendarObject implements \Sabre\CalDAV\ICalendarObject, \Sabre\DAVACL\IACL {
+
+	/** @var Calendar */
+	private $calendar;
+
+	/** @var string */
+	private $name;
+	/**
+	 * @var Card
+	 */
+	private $card;
+
+	/**
+	 * CalendarObject constructor.
+	 *
+	 * @param Calendar $calendar
+	 * @param string $name
+	 */
+	public function __construct(Calendar $calendar, string $name, Card $card = null) {
+		$this->calendar = $calendar;
+		$this->name = $name;
+		$this->card = $card;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getOwner() {
+		return null;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getGroup() {
+		return null;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getACL() {
+		return $this->calendar->getACL();
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function setACL(array $acl) {
+		throw new \Sabre\DAV\Exception\Forbidden('Setting ACL is not supported on this node');
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getSupportedPrivilegeSet() {
+		return null;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function put($data) {
+		throw new \Sabre\DAV\Exception\Forbidden('This calendar-object is read-only');
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function get() {
+		if ($this->card) {
+			return $this->card->getCalendarObject()->serialize();
+		}
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getContentType() {
+		return 'text/calendar; charset=utf-8';
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getETag() {
+		return '"' . md5($this->get()) . '"';
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getSize() {
+		return strlen($this->get());
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function delete() {
+		throw new \Sabre\DAV\Exception\Forbidden('This calendar-object is read-only');
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getName() {
+		return $this->name;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function setName($name) {
+		throw new \Sabre\DAV\Exception\Forbidden('This calendar-object is read-only');
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	function getLastModified() {
+		return $this->card->getLastModified();
+	}
+}