1 files changed, 92 insertions, 0 deletions
diff --git a/apps/dav/lib/CalDAV/CalendarObject.php b/apps/dav/lib/CalDAV/CalendarObject.php
new file mode 100644
index 00000000000..b4a58b52093
--- /dev/null
+++ b/apps/dav/lib/CalDAV/CalendarObject.php
@@ -0,0 +1,92 @@
+<?php
+/**
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+namespace OCA\DAV\CalDAV;
+
+
+use Sabre\VObject\Component;
+use Sabre\VObject\Property;
+use Sabre\VObject\Reader;
+
+class CalendarObject extends \Sabre\CalDAV\CalendarObject {
+
+	/**
+	 * @inheritdoc
+	 */
+	function get() {
+		$data = parent::get();
+		if ($this->isShared() && $this->objectData['classification'] === CalDavBackend::CLASSIFICATION_CONFIDENTIAL) {
+			return $this->createConfidentialObject($data);
+		}
+		return $data;
+	}
+
+	private function isShared() {
+		return isset($this->calendarInfo['{http://owncloud.org/ns}owner-principal']);
+	}
+
+	/**
+	 * @param string $calData
+	 * @return string
+	 */
+	private static function createConfidentialObject($calData) {
+
+		$vObject = Reader::read($calData);
+
+		/** @var Component $vElement */
+		$vElement = null;
+		if(isset($vObject->VEVENT)) {
+			$vElement = $vObject->VEVENT;
+		}
+		if(isset($vObject->VJOURNAL)) {
+			$vElement = $vObject->VJOURNAL;
+		}
+		if(isset($vObject->VTODO)) {
+			$vElement = $vObject->VTODO;
+		}
+		if(!is_null($vElement)) {
+			foreach ($vElement->children as &$property) {
+				/** @var Property $property */
+				switch($property->name) {
+					case 'CREATED':
+					case 'DTSTART':
+					case 'RRULE':
+					case 'DURATION':
+					case 'DTEND':
+					case 'CLASS':
+					case 'UID':
+						break;
+					case 'SUMMARY':
+						$property->setValue('Busy');
+						break;
+					default:
+						$vElement->__unset($property->name);
+						unset($property);
+						break;
+				}
+			}
+		}
+		
+		return $vObject->serialize();
+	}
+
+}