/* Could be called from any thread, so it could be called after client_unref()
* has started finalising the #Client. Avoid that by looking up the #Client
* atomically. */
static void
on_connection_disconnected (GDBusConnection *connection,
gboolean remote_peer_vanished,
GError *error,
gpointer user_data)
{
guint watcher_id = GPOINTER_TO_UINT (user_data);
Client *client = NULL;
client = dup_client (watcher_id);
if (client == NULL)
return;
if (client->name_owner_changed_subscription_id > 0)
g_dbus_connection_signal_unsubscribe (client->connection, client->name_owner_changed_subscription_id);
if (client->disconnected_signal_handler_id > 0)
g_signal_handler_disconnect (client->connection, client->disconnected_signal_handler_id);
g_object_unref (client->connection);
client->disconnected_signal_handler_id = 0;
client->name_owner_changed_subscription_id = 0;
client->connection = NULL;
call_vanished_handler (client, FALSE);
client_unref (client);
}
/* Will always be called from the thread which acquired client->main_context. */
static void
on_name_owner_changed (GDBusConnection *connection,
const gchar *sender_name,
const gchar *object_path,
const gchar *interface_name,
const gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
guint watcher_id = GPOINTER_TO_UINT (user_data);
Client *client = NULL;
const gchar *name;
const gchar *old_owner;
const gchar *new_owner;
client = dup_client (watcher_id);
if (client == NULL)
return;
if (!client->initialized)
goto out;
if (g_strcmp0 (object_path, "/org/freedesktop/DBus") != 0 ||
g_strcmp0 (interface_name, "org.freedesktop.DBus") != 0 ||
g_strcmp0 (sender_name, "org.freedesktop.DBus") != 0)
goto out;
g_variant_get (parameters,
"(&s&s&s)",
&name,
&old_owner,
&new_owner);
/* we only care about a specific name */
if (g_strcmp0 (name, client->name) != 0)
goto out;
if ((old_owner != NULL && strlen (old_owner) > 0) && client->name_owner != NULL)
{
g_free (client->name_owner);
client->name_owner = NULL;
call_vanished_handler (client, FALSE);
}
if (new_owner != NULL && strlen (new_owner) > 0)
{
g_warn_if_fail (client->name_owner == NULL);
g_free (client->name_owner);
client->name_owner = g_strdup (new_owner);
call_appeared_handler (client);
}
out:
client_unref (client);
}
static void
start_service_by_name_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
Client *client = user_data;
GVariant *result;
result = NULL;
result = g_dbus_connection_call_finish (client->connection,
res,
NULL);
if (result != NULL)
{
guint32 start_service_result;
g_variant_get (result, "(u)", &start_service_result);
if (start_service_result == 1) /* DBUS_START_REPLY_SUCCESS */
{
invoke_get_name_owner (client);
}
else if (start_service_result == 2) /* DBUS_START_REPLY_ALREADY_RUNNING */
{
invoke_get_name_owner (client);
}
else
{
g_warning ("Unexpected reply %d from StartServiceByName() method", start_service_result);
call_vanished_handler (client, FALSE);
client->initialized = TRUE;
}
}
else
{
/* Errors are not unexpected; the bus will reply e.g.
*
* org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.Epiphany2
* was not provided by any .service files
*
* This doesn't mean that the name doesn't have an owner, just
* that it's not provided by a .service file. So proceed to
* invoke GetNameOwner().
*/
invoke_get_name_owner (client);
}
if (result != NULL)
g_variant_unref (result);
client_unref (client);
}
static void
connection_get_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
Client *client = user_data;
client->connection = g_bus_get_finish (res, NULL);
if (client->connection == NULL)
{
call_vanished_handler (client, FALSE);
goto out;
}
has_connection (client);
out:
client_unref (client);
}
static void
on_connection_disconnected (GDBusConnection *connection,
gboolean remote_peer_vanished,
GError *error,
gpointer user_data)
{
Client *client = user_data;
if (client->name_owner_changed_subscription_id > 0)
g_dbus_connection_signal_unsubscribe (client->connection, client->name_owner_changed_subscription_id);
if (client->disconnected_signal_handler_id > 0)
g_signal_handler_disconnect (client->connection, client->disconnected_signal_handler_id);
g_object_unref (client->connection);
client->disconnected_signal_handler_id = 0;
client->name_owner_changed_subscription_id = 0;
client->connection = NULL;
call_vanished_handler (client, FALSE);
}
static void
get_name_owner_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
Client *client = user_data;
GVariant *result;
const char *name_owner;
name_owner = NULL;
result = NULL;
result = g_dbus_connection_call_finish (client->connection,
res,
NULL);
if (result != NULL)
{
g_variant_get (result, "(&s)", &name_owner);
}
if (name_owner != NULL)
{
g_warn_if_fail (client->name_owner == NULL);
client->name_owner = g_strdup (name_owner);
call_appeared_handler (client);
}
else
{
call_vanished_handler (client, FALSE);
}
client->initialized = TRUE;
if (result != NULL)
g_variant_unref (result);
client_unref (client);
}