From 5c6a5287f00e68958180442f135a7caf9ed5fb86 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <machniak@kolabsys.com>
Date: Wed, 16 Oct 2013 11:43:31 +0200
Subject: [PATCH] Catch exception when timezone is invalid

---
 plugins/libcalendaring/libcalendaring.php | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/plugins/libcalendaring/libcalendaring.php b/plugins/libcalendaring/libcalendaring.php
index 9df9e00c..47cf67e8 100644
--- a/plugins/libcalendaring/libcalendaring.php
+++ b/plugins/libcalendaring/libcalendaring.php
@@ -75,10 +75,17 @@ class libcalendaring extends rcube_plugin
         $this->rc = rcube::get_instance();
 
         // set user's timezone
-        $this->timezone = new DateTimeZone($this->rc->config->get('timezone', 'GMT'));
+        try {
+            $this->timezone = new DateTimeZone($this->rc->config->get('timezone', 'GMT'));
+        }
+        catch (Exception $e) {
+            $this->timezone = new DateTimeZone('GMT');
+        }
+
         $now = new DateTime('now', $this->timezone);
-        $this->gmt_offset = $now->getOffset();
-        $this->dst_active = $now->format('I');
+
+        $this->gmt_offset      = $now->getOffset();
+        $this->dst_active      = $now->format('I');
         $this->timezone_offset = $this->gmt_offset / 3600 - $this->dst_active;
 
         $this->add_texts('localization/', false);