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Merge branch 'fdonotif-segfault-fix' into 'master'

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gfdonotificationbackend: Fix possible invalid pointer in dbus callback

See merge request GNOME/glib!90
This commit is contained in:
Philip Withnall 2018-06-13 09:27:11 +00:00
commit e48a3920d4
1 changed files with 34 additions and 21 deletions
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55
gio/gfdonotificationbackend.c
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@ -62,7 +62,6 @@ typedef struct
GVariant *default_action_target;
} FreedesktopNotification;
static void
freedesktop_notification_free (gpointer data)
{
@ -76,6 +75,24 @@ freedesktop_notification_free (gpointer data)
g_slice_free (FreedesktopNotification, n);
}
static FreedesktopNotification *
freedesktop_notification_new (GFdoNotificationBackend *backend,
const gchar *id,
GNotification *notification)
{
FreedesktopNotification *n;
n = g_slice_new0 (FreedesktopNotification);
n->backend = backend;
n->id = g_strdup (id);
n->notify_id = 0;
g_notification_get_default_action (notification,
&n->default_action,
&n->default_action_target);
return n;
}
static FreedesktopNotification *
g_fdo_notification_backend_find_notification (GFdoNotificationBackend *backend,
const gchar *id)
@ -319,8 +336,19 @@ notification_sent (GObject *source_object,
val = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object), result, &error);
if (val)
{
GFdoNotificationBackend *backend = n->backend;
FreedesktopNotification *match;
g_variant_get (val, "(u)", &n->notify_id);
g_variant_unref (val);
match = g_fdo_notification_backend_find_notification_by_notify_id (backend, n->notify_id);
if (match != NULL)
{
backend->notifications = g_slist_remove (backend->notifications, match);
freedesktop_notification_free (match);
}
backend->notifications = g_slist_prepend (backend->notifications, n);
}
else
{
@ -331,9 +359,7 @@ notification_sent (GObject *source_object,
warning_printed = TRUE;
}
n->backend->notifications = g_slist_remove (n->backend->notifications, n);
freedesktop_notification_free (n);
g_error_free (error);
}
}
@ -378,7 +404,7 @@ g_fdo_notification_backend_send_notification (GNotificationBackend *backend,
GNotification *notification)
{
GFdoNotificationBackend *self = G_FDO_NOTIFICATION_BACKEND (backend);
FreedesktopNotification *n;
FreedesktopNotification *n, *tmp;
if (self->notify_subscription == 0)
{
@ -391,24 +417,11 @@ g_fdo_notification_backend_send_notification (GNotificationBackend *backend,
notify_signal, backend, NULL);
}
n = g_fdo_notification_backend_find_notification (self, id);
if (n == NULL)
{
n = g_slice_new0 (FreedesktopNotification);
n->backend = self;
n->id = g_strdup (id);
n->notify_id = 0;
n = freedesktop_notification_new (self, id, notification);
n->backend->notifications = g_slist_prepend (n->backend->notifications, n);
}
else
{
/* Only clear default action. All other fields are still valid */
g_clear_pointer (&n->default_action, g_free);
g_clear_pointer (&n->default_action_target, g_variant_unref);
}
g_notification_get_default_action (notification, &n->default_action, &n->default_action_target);
tmp = g_fdo_notification_backend_find_notification (self, id);
if (tmp)
n->notify_id = tmp->notify_id;
call_notify (backend->dbus_connection, backend->application, n->notify_id, notification, notification_sent, n);
}