static gboolean
photos_thumbnailer_handle_cancel (PhotosThumbnailer *self,
GDBusMethodInvocation *invocation,
guint serial)
{
GCancellable *cancellable;
GDBusConnection *connection;
GDBusMethodInvocation *invocation_ongoing;
GHashTableIter iter;
g_return_val_if_fail (PHOTOS_IS_THUMBNAILER (self), FALSE);
g_return_val_if_fail (G_IS_DBUS_METHOD_INVOCATION (invocation), FALSE);
photos_debug (PHOTOS_DEBUG_THUMBNAILER, "Handling Cancel for %u", serial);
g_application_hold (G_APPLICATION (self));
connection = g_dbus_method_invocation_get_connection (invocation);
g_hash_table_iter_init (&iter, self->cancellables);
while (g_hash_table_iter_next (&iter, (gpointer *) &invocation_ongoing, (gpointer *) &cancellable))
{
GDBusConnection *connection_ongoing;
GDBusMessage *message_ongoing;
guint32 serial_ongoing;
connection_ongoing = g_dbus_method_invocation_get_connection (invocation_ongoing);
message_ongoing = g_dbus_method_invocation_get_message (invocation_ongoing);
serial_ongoing = g_dbus_message_get_serial (message_ongoing);
if (connection == connection_ongoing && (guint32) serial == serial_ongoing)
{
g_cancellable_cancel (cancellable);
photos_thumbnailer_dbus_complete_cancel (self->skeleton, invocation);
goto out;
}
}
g_dbus_method_invocation_return_error_literal (invocation, PHOTOS_ERROR, 0, "Invalid serial");
out:
photos_debug (PHOTOS_DEBUG_THUMBNAILER, "Completed Cancel");
g_application_release (G_APPLICATION (self));
return TRUE;
}
/**
* g_dbus_method_invocation_return_dbus_error:
* @invocation: A #GDBusMethodInvocation.
* @error_name: A valid D-Bus error name.
* @error_message: A valid D-Bus error message.
*
* Finishes handling a D-Bus method call by returning an error.
*
* This method will free @invocation, you cannot use it afterwards.
*
* Since: 2.26
*/
void
g_dbus_method_invocation_return_dbus_error (GDBusMethodInvocation *invocation,
const gchar *error_name,
const gchar *error_message)
{
GDBusMessage *reply;
g_return_if_fail (G_IS_DBUS_METHOD_INVOCATION (invocation));
g_return_if_fail (error_name != NULL && g_dbus_is_name (error_name));
g_return_if_fail (error_message != NULL);
if (G_UNLIKELY (_g_dbus_debug_return ()))
{
_g_dbus_debug_print_lock ();
g_print ("========================================================================\n"
"GDBus-debug:Return:\n"
" >>>> METHOD ERROR %s\n"
" message `%s'\n"
" in response to %s.%s()\n"
" on object %s\n"
" to name %s\n"
" reply-serial %d\n",
error_name,
error_message,
invocation->interface_name, invocation->method_name,
invocation->object_path,
invocation->sender,
g_dbus_message_get_serial (invocation->message));
_g_dbus_debug_print_unlock ();
}
reply = g_dbus_message_new_method_error_literal (invocation->message,
error_name,
error_message);
g_dbus_connection_send_message (g_dbus_method_invocation_get_connection (invocation), reply, G_DBUS_SEND_MESSAGE_FLAGS_NONE, NULL, NULL);
g_object_unref (reply);
g_object_unref (invocation);
}
/**
* g_dbus_method_invocation_return_value:
* @invocation: A #GDBusMethodInvocation.
* @parameters: A #GVariant tuple with out parameters for the method or %NULL if not passing any parameters.
*
* Finishes handling a D-Bus method call by returning @parameters.
* If the @parameters GVariant is floating, it is consumed.
*
* It is an error if @parameters is not of the right format.
*
* This method will free @invocation, you cannot use it afterwards.
*
* Since: 2.26
*/
void
g_dbus_method_invocation_return_value (GDBusMethodInvocation *invocation,
GVariant *parameters)
{
GDBusMessage *reply;
GError *error;
g_return_if_fail (G_IS_DBUS_METHOD_INVOCATION (invocation));
g_return_if_fail ((parameters == NULL) || g_variant_is_of_type (parameters, G_VARIANT_TYPE_TUPLE));
if (parameters == NULL)
parameters = g_variant_new_tuple (NULL, 0);
/* if we have introspection data, check that the signature of @parameters is correct */
if (invocation->method_info != NULL)
{
GVariantType *type;
type = _g_dbus_compute_complete_signature (invocation->method_info->out_args);
if (!g_variant_is_of_type (parameters, type))
{
gchar *type_string = g_variant_type_dup_string (type);
g_warning (_("Type of return value is incorrect, got `%s', expected `%s'"),
g_variant_get_type_string (parameters), type_string);
g_variant_type_free (type);
g_free (type_string);
goto out;
}
g_variant_type_free (type);
}
if (G_UNLIKELY (_g_dbus_debug_return ()))
{
_g_dbus_debug_print_lock ();
g_print ("========================================================================\n"
"GDBus-debug:Return:\n"
" >>>> METHOD RETURN\n"
" in response to %s.%s()\n"
" on object %s\n"
" to name %s\n"
" reply-serial %d\n",
invocation->interface_name, invocation->method_name,
invocation->object_path,
invocation->sender,
g_dbus_message_get_serial (invocation->message));
_g_dbus_debug_print_unlock ();
}
reply = g_dbus_message_new_method_reply (invocation->message);
g_dbus_message_set_body (reply, parameters);
error = NULL;
if (!g_dbus_connection_send_message (g_dbus_method_invocation_get_connection (invocation), reply, G_DBUS_SEND_MESSAGE_FLAGS_NONE, NULL, &error))
{
g_warning (_("Error sending message: %s"), error->message);
g_error_free (error);
}
g_object_unref (reply);
out:
g_object_unref (invocation);
}
static void
g_dbus_method_invocation_return_value_internal (GDBusMethodInvocation *invocation,
GVariant *parameters,
GUnixFDList *fd_list)
{
GDBusMessage *reply;
GError *error;
g_return_if_fail (G_IS_DBUS_METHOD_INVOCATION (invocation));
g_return_if_fail ((parameters == NULL) || g_variant_is_of_type (parameters, G_VARIANT_TYPE_TUPLE));
if (parameters == NULL)
parameters = g_variant_new_tuple (NULL, 0);
/* if we have introspection data, check that the signature of @parameters is correct */
if (invocation->method_info != NULL)
{
GVariantType *type;
type = _g_dbus_compute_complete_signature (invocation->method_info->out_args);
if (!g_variant_is_of_type (parameters, type))
{
gchar *type_string = g_variant_type_dup_string (type);
g_warning ("Type of return value is incorrect: expected '%s', got '%s''",
type_string, g_variant_get_type_string (parameters));
g_variant_type_free (type);
g_free (type_string);
goto out;
}
g_variant_type_free (type);
}
/* property_info is only non-NULL if set that way from
* GDBusConnection, so this must be the case of async property
* handling on either 'Get', 'Set' or 'GetAll'.
*/
if (invocation->property_info != NULL)
{
if (g_str_equal (invocation->method_name, "Get"))
{
GVariant *nested;
if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(v)")))
{
g_warning ("Type of return value for property 'Get' call should be '(v)' but got '%s'",
g_variant_get_type_string (parameters));
goto out;
}
/* Go deeper and make sure that the value inside of the
* variant matches the property type.
*/
g_variant_get (parameters, "(v)", &nested);
if (!g_str_equal (g_variant_get_type_string (nested), invocation->property_info->signature))
{
g_warning ("Value returned from property 'Get' call for '%s' should be '%s' but is '%s'",
invocation->property_info->name, invocation->property_info->signature,
g_variant_get_type_string (nested));
g_variant_unref (nested);
goto out;
}
g_variant_unref (nested);
}
else if (g_str_equal (invocation->method_name, "GetAll"))
{
if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE ("(a{sv})")))
{
g_warning ("Type of return value for property 'GetAll' call should be '(a{sv})' but got '%s'",
g_variant_get_type_string (parameters));
goto out;
}
/* Could iterate the list of properties and make sure that all
* of them are actually on the interface and with the correct
* types, but let's not do that for now...
*/
}
else if (g_str_equal (invocation->method_name, "Set"))
{
if (!g_variant_is_of_type (parameters, G_VARIANT_TYPE_UNIT))
{
g_warning ("Type of return value for property 'Set' call should be '()' but got '%s'",
g_variant_get_type_string (parameters));
goto out;
}
}
else
g_assert_not_reached ();
}
if (G_UNLIKELY (_g_dbus_debug_return ()))
{
_g_dbus_debug_print_lock ();
g_print ("========================================================================\n"
"GDBus-debug:Return:\n"
" >>>> METHOD RETURN\n"
" in response to %s.%s()\n"
" on object %s\n"
" to name %s\n"
" reply-serial %d\n",
invocation->interface_name, invocation->method_name,
invocation->object_path,
invocation->sender,
g_dbus_message_get_serial (invocation->message));
_g_dbus_debug_print_unlock ();
}
reply = g_dbus_message_new_method_reply (invocation->message);
g_dbus_message_set_body (reply, parameters);
#ifdef G_OS_UNIX
if (fd_list != NULL)
g_dbus_message_set_unix_fd_list (reply, fd_list);
#endif
error = NULL;
if (!g_dbus_connection_send_message (g_dbus_method_invocation_get_connection (invocation), reply, G_DBUS_SEND_MESSAGE_FLAGS_NONE, NULL, &error))
{
g_warning ("Error sending message: %s", error->message);
g_error_free (error);
}
g_object_unref (reply);
out:
g_object_unref (invocation);
}
