From df1d9e81b2327541f976466b3a0601243b4f461a Mon Sep 17 00:00:00 2001
From: Ralf Becker <ralfbecker@outdoor-training.de>
Date: Thu, 22 Sep 2011 19:49:01 +0000
Subject: [PATCH] - implemented regular CalDAV free-busy-query report - fixed
 FBTYPE for tentative accepted invitations: BUSY-TENTATIVE - fixed typo
 stalling outbox free-busy request

---
 calendar/inc/class.calendar_groupdav.inc.php | 41 +++++++++++++++++++-
 calendar/inc/class.calendar_ical.inc.php     |  6 ++-
 2 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/calendar/inc/class.calendar_groupdav.inc.php b/calendar/inc/class.calendar_groupdav.inc.php
index c0056ae9bc..aa165b93bb 100644
--- a/calendar/inc/class.calendar_groupdav.inc.php
+++ b/calendar/inc/class.calendar_groupdav.inc.php
@@ -123,6 +123,11 @@ class calendar_groupdav extends groupdav_handler
 			error_log(__METHOD__."($path,".array2string($options).",,$user,$id)");
 		}
 
+		if ($options['root']['name'] == 'free-busy-query')
+		{
+			return $this->free_busy_report($path, $options, $user);
+		}
+
 		// ToDo: add parameter to only return id & etag
 		$filter = array(
 			'users' => $user,
@@ -710,7 +715,7 @@ class calendar_groupdav extends groupdav_handler
 		$organizer = $component->getAttribute('ORGANIZER');
 		$attendees = $component->getAttribute('ATTENDEE');
 		// X-CALENDARSERVER-MASK-UID specifies to exclude given event from busy-time
-		$mask_uid = $component->getAttribte('X-CALENDARSERVER-MASK-UID');
+		$mask_uid = $component->getAttribute('X-CALENDARSERVER-MASK-UID');
 
 		header('Content-type: text/xml; charset=UTF-8');
 
@@ -751,6 +756,35 @@ class calendar_groupdav extends groupdav_handler
 		return true;
 	}
 
+	/**
+	 * Handle free-busy-query report
+	 *
+	 * @param string $path
+	 * @param array $options
+	 * @param int $user account_id
+	 * @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
+	 */
+	function free_busy_report($path,$options,$user)
+	{
+		if (!$this->bo->check_perms(EGW_ACL_FREEBUSY, 0, $user))
+		{
+			return '403 Forbidden';
+		}
+		foreach($options['other'] as $filter)
+		{
+			if ($filter['name'] == 'time-range')
+			{
+				$start = $this->vCalendar->_parseDateTime($filter['attrs']['start']);
+				$end = $this->vCalendar->_parseDateTime($filter['attrs']['end']);
+			}
+		}
+		$handler = $this->_get_handler();
+		header('Content-Type: text/calendar');
+		echo $handler->freebusy($user, $end, true, 'utf-8', $start, 'REPLY', array());
+
+		common::egw_exit();	// otherwise we get a 207 multistatus, not 200 Ok
+	}
+
 	/**
 	 * Return priviledges for current user, default is read and read-current-user-privilege-set
 	 *
@@ -982,7 +1016,10 @@ class calendar_groupdav extends groupdav_handler
 		$props['supported-report-set'] = HTTP_WebDAV_Server::mkprop('supported-report-set',array(
 			HTTP_WebDAV_Server::mkprop('supported-report',array(
 				HTTP_WebDAV_Server::mkprop('report',array(
-					HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-multiget','')))))));
+					HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-multiget',''))),
+				HTTP_WebDAV_Server::mkprop('report',array(
+					HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'free-busy-query',''))),
+		))));
 		$props['supported-calendar-data'] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'supported-calendar-data',array(
 			HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-data', array('content-type' => 'text/calendar', 'version'=> '2.0')),
 			HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-data', array('content-type' => 'text/x-calendar', 'version'=> '1.0'))));
diff --git a/calendar/inc/class.calendar_ical.inc.php b/calendar/inc/class.calendar_ical.inc.php
index 80d67bad2c..8269ae8ce5 100644
--- a/calendar/inc/class.calendar_ical.inc.php
+++ b/calendar/inc/class.calendar_ical.inc.php
@@ -3088,19 +3088,21 @@ class calendar_ical extends calendar_boupdate
 				if ($event['non_blocking']) continue;
 				if ($event['uid'] === $extra['X-CALENDARSERVER-MASK-UID']) continue;
 
+				$fbtype = $event['participants'][$user] == 'T' ? 'BUSY-TENTATIVE' : 'BUSY';
+
 				if ($utc)
 				{
 					$vfreebusy->setAttribute('FREEBUSY',array(array(
 						'start' => $event['start'],
 						'end' => $event['end'],
-					)));
+					)), array('FBTYPE' => $fbtype));
 				}
 				else
 				{
 					$vfreebusy->setAttribute('FREEBUSY',array(array(
 						'start' => date('Ymd\THis',$event['start']),
 						'end' => date('Ymd\THis',$event['end']),
-					)));
+					)), array('FBTYPE' => $fbtype));
 				}
 			}
 		}