The return value is nullable, but gnome-calendar fails to check it.
Because the nullable return value is inconvenient for us, we can instead
add and use gcal_context_get_icaltimezone() to supplement the existing
gcal_context_get_timezone().
We'll also need a function to convert from GTimeZone to ICalTimezone,
gcal_timezone_to_icaltimezone().
Fixes#419
The method ask_recurrence_modification_type() currently
receives an ESource, and tried to fetch the ECalClient
from the ESource by using g_object_get_data().
However, since we moved to GcalCalendar, we do not set
this data field in ESource.
Receive a GcalCalendar instead, and use the appropriate
function gcal_calendar_get_client() instead.
Most of these are probably paranoid, not bugs. I haven't done an
exhaustive review to see what really needs it: that would be
time-consuming and require significant familiarity with the Calendar
codebase. This was just a quick check. Anyway, I vote for paranoid
when it comes to using g_signal_connect() regardless. It's dangerous,
and there's no reason to ever leave a signal connected after the user
data object has been destroyed.
Fixes#423
GNOME Calendar needs to deal with two different
weekday ranges:
1. Sunday → 0 ... Saturday → 6
2. Monday → 1 ... Sunday → 7 (used by GDateTime)
When converting (2) into (1), the correct calculation
is `weekday % 7`.
However, gcal_date_time_get_start_of_week() was doing
`weekday - 1` instead.
Fix it and do the correct calculation instead.
https://gitlab.gnome.org/GNOME/gnome-calendar/issues/451
This was originally discovered and fixed by Milan Crha; I'm just
forward-porting his fix to the master branch. self->clients takes
ownership of this source but we don't currently have ownership here,
leading to a double free vulnerability.
Fixes#435
Matej Urbančič