Davdroid crashes on calendar sync

[AutoImport-nawrasg]

I’m having the same problem on a Nexus 4 !

[AutoImport-snitsch]

I got the same issue, it is caused by an invalid or mishandled VTODO entry.
These patches helped me and now it is syncing fine:

--- a/src/at/bitfire/davdroid/resource/Event.java
+++ b/src/at/bitfire/davdroid/resource/Event.java
@@ -272,7 +272,7 @@ public class Event extends Resource {
 
        
        public long getDtStartInMillis() {
-               return dtStart.getDate().getTime();
+               return dtStart!=null ? dtStart.getDate().getTime(): 0;
        }
        
        public String getDtStartTzID() {
@@ -291,7 +291,7 @@ public class Event extends Resource {
        
        
        public long getDtEndInMillis() {
-               return dtEnd.getDate().getTime();
+               return dtEnd != null ? dtEnd.getDate().getTime() : 0;
        }
        
        public String getDtEndTzID() {
@@ -316,11 +316,11 @@ public class Event extends Resource {
        }
 
        protected static boolean hasTime(DateProperty date) {
-               return date.getDate() instanceof DateTime;
+               return (date==null) || date.getDate() instanceof DateTime;
        }
 
        protected static String getTzId(DateProperty date) {
-               if (date.isUtc() || !hasTime(date))
+               if (date == null || date.isUtc() || !hasTime(date))
                        return Time.TIMEZONE_UTC;
                else if (date.getTimeZone() != null)
                        return date.getTimeZone().getID();

[rfc2822]

Thanks for the reports.

The next release will correct this by ignoring entries that don’t have a valid dtStart. I want to get rid of the null values so an exception will be thrown when a record has no VEVENT component, causing this iCal to be ignored.

[rfc2822]

Which DAVdroid version did you use?

[AutoImport-Messinger]

Latest from google app store, 0.5.8a.

[rfc2822]

@Messinger And can you tell me the contents of owncloud-0d676ad9ec114cd331679ffdd65eedea.ics?

I couldn’t reproduce this with a VTODO entry, it was ignored as it is supposed to.

@All: Can you give me exact steps to reproduce, i.e. which .ics I have to put on the server so that the crash occurs? I have very little time at the moment so (unfortunately) I don’t have the possibility to do much research.

[AutoImport-Messinger]

Here we go:

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//ownCloud//NONSGML Journal 0.3.2//EN
BEGIN:VJOURNAL
DTSTART;VALUE=DATE-TIME;TZID=UTC:20131031T113526
CREATED;VALUE=DATE-TIME:20131031T113526Z
UID:8c3d2c0190
ORGANIZER:MAILTO:xxx@yyyyy.de
UID:ecd1e5a182
SUMMARY:Completed task: 
END:VJOURNAL
END:VCALENDAR

[AutoImport-kwirk]

Also on SOGo:

BEGIN:VCALENDAR
PRODID:-//Inverse inc./SOGo 2.1.1b//EN
VERSION:2.0
BEGIN:VTODO
UID:1A4-53025300-11-13B2F340
SUMMARY:Test
LOCATION:Test
CLASS:PUBLIC
CREATED:20140217T182101Z
DTSTAMP:20140217T182101Z
LAST-MODIFIED:20140217T182101Z
END:VTODO
END:VCALENDAR

…and with adding start and end date:

BEGIN:VCALENDAR
PRODID:-//Inverse inc./SOGo 2.1.1b//EN
VERSION:2.0
BEGIN:VTODO
UID:1A4-53025300-11-13B2F340
SUMMARY:Test
LOCATION:Test
CLASS:PUBLIC
CREATED:20140217T182101Z
DTSTAMP:20140217T182101Z
LAST-MODIFIED:20140217T182332Z
DTSTART:20140217T183000Z
DUE:20140218T183000Z
END:VTODO
END:VCALENDAR

[AutoImport-pguth]

DAVdroid crash on sync. NullPointerException, source class: davdroid.resource.Event, line: 319.
Latest version from the appstore.

[rfc2822]

This is really strange. I can reproduce this issue with 0.5.8 from Play Store, but not with 0.5.8 from source, so I guess that this issue has been fixed with the latest commit and I have uploaded a version between commits to Play Store. This is backed up by the fact that it works with 0.5.8 from FDroid (I use this version myself).

I will close this as I can test with 0.5.9 in Play Store.