317307 - Errors when subscribing to calendar

Status: RESOLVED INVALID

(Calendar :: General, defect)

Description

[Pete Prodoehl]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7

In versions of Sunbird prior to 0.3a1 it was possible to subscribe to calendars from Upcoming.org. With version 0.3a1 it is not. I was able to subscribe to the calendar if I did a global find/replace in it swapping 'TZID=US-Pacific' with 'VALUE=DATE' I do not know if Upcoming is doing the wrong thing, or Sunbird is.

Reproducible: Always

Steps to Reproduce:
1. Subscribe to any calendar from Upcoming.org (Try this one: http://upcoming.org/calendar/metro/793 )

Actual Results:  
Error number: 0x80004005
Description: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [calIIcalComponent.startTime]"  nsresult: "0x80004005 (NS_ERROR_FAILURE)"  location: "JS frame :: file:///Applications/Sunbird.app/Contents/MacOS/components/calItemBase.js :: anonymous :: line 449"  data: no]

Expected Results:  
Subscribed to the calendar without any errors.

Bug did not seem to happen in versions of Sunbird prior to 0.3a1

Comment 1

[Joey Minta]

The calendar file referenced here seems to be invalid.  It declares a VTIMEZONE with 
TZID:America/Portland

but then tries to use 
DTSTART;TZID=US-Pacific:20051201

RFC2445 specifies that if a TZID is to be used, it must be defined previously in a VTIMEZONE.  Here, since the timezone used (US-Pacific) is never defined, we fail because of the undefined timezone.  If I replace all instances of 'US-Pacific' with 'America/Portland', or vice versa, I can use the calendar without a problem.

Comment 2

[Pete Prodoehl]

Just a note, Upcoming.org has fixed this on their end, they now use TZID:US-Pacific for the VTIMEZONE value.