From 826f3f8ea39299a9c8e8cf105ec112ef32960c38 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <bruederli@kolabsys.com>
Date: Fri, 9 Nov 2012 13:55:57 +0100
Subject: [PATCH] Avoid endless loops in recurrence computation

---
 plugins/calendar/drivers/kolab/kolab_calendar.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/plugins/calendar/drivers/kolab/kolab_calendar.php b/plugins/calendar/drivers/kolab/kolab_calendar.php
index a62eb549..c1c86268 100644
--- a/plugins/calendar/drivers/kolab/kolab_calendar.php
+++ b/plugins/calendar/drivers/kolab/kolab_calendar.php
@@ -409,6 +409,10 @@ class kolab_calendar
       }
       else if ($next_event['start'] > $end)  // stop loop if out of range
         break;
+
+	  // avoid endless recursion loops
+	  if ($i > 1000)
+		  break;
     }
     
     return $events;