From b1d3877625cb6ef13a80faa377fcf68e6fd0198d Mon Sep 17 00:00:00 2001
From: Simon Spannagel <simonspa@kth.se>
Date: Fri, 16 Oct 2020 07:47:29 +0200
Subject: [PATCH] CalDavBackend: check if timerange is array before accessing

Signed-off-by: Simon Spannagel <simonspa@kth.se>
---
 apps/dav/lib/CalDAV/CalDavBackend.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/apps/dav/lib/CalDAV/CalDavBackend.php b/apps/dav/lib/CalDAV/CalDavBackend.php
index 9132612872..82c1408683 100644
--- a/apps/dav/lib/CalDAV/CalDavBackend.php
+++ b/apps/dav/lib/CalDAV/CalDavBackend.php
@@ -16,6 +16,7 @@
  * @author Thomas Citharel <nextcloud@tcit.fr>
  * @author Thomas Müller <thomas.mueller@tmit.eu>
  * @author Vinicius Cubas Brand <vinicius@eita.org.br>
+ * @author Simon Spannagel <simonspa@kth.se>
  *
  * @license AGPL-3.0
  *
@@ -1364,7 +1365,7 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 				$requirePostFilter = false;
 			}
 			// There was a time-range filter
-			if ($componentType === 'VEVENT' && isset($filters['comp-filters'][0]['time-range'])) {
+			if ($componentType === 'VEVENT' && isset($filters['comp-filters'][0]['time-range']) && is_array($filters['comp-filters'][0]['time-range'])) {
 				$timeRange = $filters['comp-filters'][0]['time-range'];
 
 				// If start time OR the end time is not specified, we can do a