[Tickets #13790] Kronolith sets attendee as organizer when accepting through mailclient

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Ticket URL: https://bugs.horde.org/ticket/13790
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  Ticket             | 13790
  Created By         | geiger at b1-systems.de
  Summary            | Kronolith sets attendee as organizer when accepting
                     | through mailclient
  Queue              | Kronolith
  Version            | FRAMEWORK_5_2
  Type               | Bug
  State              | Unconfirmed
  Priority           | 3. High
  Milestone          |
  Patch              |
  Owners             |
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geiger at b1-systems.de (2015-01-08 11:37) wrote:

When adding an appointment you got invited to via Outlook or  
Thunderbird using Lightning to an Horde Kronolith synced calendar, a  
new event will be created with yourself as organizer instead of  
attendee and every other attendee will receive a new invitation.

Seems like Kronolith_Event::fromHash() treats the event as a new one  
which sets the creator/organizer used in  
Kronolith_Event::toiCalendar() to the current user.

HOW TO REPRODUCE:
1. Get an invitation to an appointment where your email is set as attendee.
2. Accept the invitation using Outlook or Lightning (not the links in  
the email but the buttons above).
3. Save the event to a calendar which is synchronized using Horde Kronolith.
4. Send out confirmation email.
5. The initial organizer will receive two mails. Note that the  
organizer now isn't the initial creator, it will be you.

EXPECTED BEHAVIOUR:
The event will be accepted and the organizer won't change.

CURRENT BEHAVIOUR:
The event will be recreated with you as the organizer.


Important parts of the .ics-Files:

When getting the invitation:
ORGANIZER;CN=Karim Geiger:mailto:[original_organizer]@gmail.com
ATTENDEE;CUTYPE=INDIVIDUAL;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=lang@[domain].de;X-NUM-GUESTS=0:mailto:lang@[domain].de
ATTENDEE;CUTYPE=INDIVIDUAL;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=geiger@[domain].de;X-NUM-GUESTS=0:mailto:geiger@[domain].de
ATTENDEE;CUTYPE=INDIVIDUAL;ROLE=REQ-PARTICIPANT;PARTSTAT=ACCEPTED;RSVP=TRUE;CN=Karim  
Geiger;X-NUM-GUESTS=0:mailto:[original_organizer]@gmail.com

After accepting the invitation by lang:
ORGANIZER;CN=Ralf Lang:mailto:lang@[domain].de
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=ACCEPTED;CN=lang@[domain].de:mailto:lang@[domain].de
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=geiger@[domain].de:mailto:geiger@[domain].de
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=ACCEPTED;CN=Karim   
Geiger:mailto:[original_organizer]@gmail.com