Notification id (notify_id) is generated by notification daemon and
is valid only while daemon is running. If notification backend will
resend/reuse existing notification id (replace_id) after notification
daemon has been restarted it could replace wrong notification as same
id now can be used by different notification.
This is to avoid race between dispose() being called on the
GFdoNotificationBackend instance, and any pending operations which are
still waiting on a D-Bus reply when it’s disposed.
(thx to Philip Withnall for pointing that out)
Signed-off-by: Arnaud Rebillout <elboulangero@gmail.com>
The way things were before: a FreedesktopNotification struct is
allocated before the dbus call, and this same struct is possibly re-used
for other dbus calls. If the server becomes unavailable, the callback
will be invoked after the call times out, which leaves a long time where
other dbus calls can happen, re-using the same FreedesktopNotification
as user data. When the first call times out, the callback is invoked,
and the user data is freed. Subsequent calls that used the same user
data will time out later on, and try to free a pointer that was already
freed, hence segfaults.
This bug can be reproduced in Cinnamon 3.6.7, as mentioned in:
<https://github.com/linuxmint/Cinnamon/issues/7491>
This commit fixes that by always allocating a new
FreedesktopNotification before invoking dbus_call(), ensuring that the
callback always have a valid user data.
Signed-off-by: Arnaud Rebillout <elboulangero@gmail.com>
When using the Freedesktop backend for GNotification, it seems like a
better idea to map G_NOTIFICATION_PRIORITY_HIGH to NOTIFY_URGENCY_NORMAL
(instead of NOTIFY_URGENCY_CRITICAL) provided that the difference
between GNotification's NORMAL and HIGH priorities is minor.
Signed-off-by: Adrian Perez de Castro <aperez@igalia.com>
https://bugzilla.gnome.org/show_bug.cgi?id=784815
We're first getting the notification by its notify_id, but activating
the action afterwards could redraw it, leading to a dangling pointer.
Fix this by simply searching the list of active notifications again
after activating the action.
Move a method from GNotificationBackend into the fdo backend (since it
was only used from here). Remove the accessors for the already-public
(in private header) ->dbus_connect and ->application on
GNotificationBackend.
https://bugzilla.gnome.org/show_bug.cgi?id=688492
