Heavily refactored, including multiple calendars per user and recurring events. Not in an installable state yet, though

dav/common/dav_caldav_calendar_virtual.inc.php

@@ -0,0 +1,44 @@
+<?php
+
+class Sabre_CalDAV_Calendar_Virtual extends Sabre_CalDAV_Calendar {
+
+	/**
+	 * Returns a list of ACE's for this node.
+	 *
+	 * Each ACE has the following properties:
+	 *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
+	 *     currently the only supported privileges
+	 *   * 'principal', a url to the principal who owns the node
+	 *   * 'protected' (optional), indicating that this ACE is not allowed to
+	 *      be updated.
+	 *
+	 * @return array
+	 */
+	public function getACL() {
+
+		return array(
+			array(
+				'privilege' => '{DAV:}read',
+				'principal' => $this->calendarInfo['principaluri'],
+				'protected' => true,
+			),
+			array(
+				'privilege' => '{DAV:}read',
+				'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-write',
+				'protected' => true,
+			),
+			array(
+				'privilege' => '{DAV:}read',
+				'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-read',
+				'protected' => true,
+			),
+			array(
+				'privilege' => '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}read-free-busy',
+				'principal' => '{DAV:}authenticated',
+				'protected' => true,
+			),
+
+		);
+
+	}
+}