// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Red Hat, Inc.
*/
#include "nm-default.h"
#include "nm-dbus-utils.h"
#include "nm-dbus-object.h"
/*****************************************************************************/
const GDBusSignalInfo nm_signal_info_property_changed_legacy = NM_DEFINE_GDBUS_SIGNAL_INFO_INIT (
"PropertiesChanged",
.args = NM_DEFINE_GDBUS_ARG_INFOS (
NM_DEFINE_GDBUS_ARG_INFO ("properties", "a{sv}"),
),
);
GDBusPropertyInfo *
nm_dbus_utils_interface_info_lookup_property (const GDBusInterfaceInfo *interface_info,
const char *property_name,
guint *property_idx)
{
guint i;
nm_assert (interface_info);
nm_assert (property_name);
/* there is also g_dbus_interface_info_lookup_property(), however that makes use
* of a global cache. */
if (interface_info->properties) {
for (i = 0; interface_info->properties[i]; i++) {
GDBusPropertyInfo *info = interface_info->properties[i];
if (nm_streq (info->name, property_name)) {
NM_SET_OUT (property_idx, i);
return info;
}
}
}
return NULL;
}
GDBusMethodInfo *
nm_dbus_utils_interface_info_lookup_method (const GDBusInterfaceInfo *interface_info,
const char *method_name)
{
guint i;
nm_assert (interface_info);
nm_assert (method_name);
/* there is also g_dbus_interface_info_lookup_property(), however that makes use
* of a global cache. */
if (interface_info->methods) {
for (i = 0; interface_info->methods[i]; i++) {
GDBusMethodInfo *info = interface_info->methods[i];
if (nm_streq (info->name, method_name))
return info;
}
}
return NULL;
}
GVariant *
nm_dbus_utils_get_property (GObject *obj,
const char *signature,
const char *property_name)
{
GParamSpec *pspec;
nm_auto_unset_gvalue GValue value = G_VALUE_INIT;
nm_assert (G_IS_OBJECT (obj));
nm_assert (g_variant_type_string_is_valid (signature));
nm_assert (property_name && property_name[0]);
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (obj), property_name);
if (!pspec)
g_return_val_if_reached (NULL);
g_value_init (&value, pspec->value_type);
g_object_get_property (obj, property_name, &value);
/* returns never-floating variant */
return g_dbus_gvalue_to_gvariant (&value, G_VARIANT_TYPE (signature));
}
/*****************************************************************************/
void
nm_dbus_utils_g_value_set_object_path (GValue *value, gpointer object)
{
const char *path;
g_return_if_fail (!object || NM_IS_DBUS_OBJECT (object));
if ( object
&& (path = nm_dbus_object_get_path (object)))
g_value_set_string (value, path);
else
g_value_set_string (value, NULL);
}
void
nm_dbus_utils_g_value_set_object_path_still_exported (GValue *value, gpointer object)
{
const char *path;
g_return_if_fail (!object || NM_IS_DBUS_OBJECT (object));
if ( object
&& (path = nm_dbus_object_get_path_still_exported (object)))
g_value_set_string (value, path);
else
g_value_set_string (value, "/");
}
void
nm_dbus_utils_g_value_set_object_path_from_hash (GValue *value,
GHashTable *hash /* has keys of NMDBusObject type. */,
gboolean expect_all_exported)
{
NMDBusObject *obj;
char **strv;
guint i, n;
GHashTableIter iter;
nm_assert (value);
nm_assert (hash);
n = g_hash_table_size (hash);
strv = g_new (char *, n + 1);
i = 0;
g_hash_table_iter_init (&iter, hash);
while (g_hash_table_iter_next (&iter, (gpointer *) &obj, NULL)) {
const char *path;
path = nm_dbus_object_get_path_still_exported (obj);
if (!path) {
nm_assert (!expect_all_exported);
continue;
}
strv[i++] = g_strdup (path);
}
nm_assert (i <= n);
strv[i] = NULL;
/* sort the names, to give a well-defined, stable order. */
nm_utils_strv_sort (strv, i);
g_value_take_boxed (value, strv);
}
const char **
nm_dbus_utils_get_paths_for_clist (const CList *lst_head,
gssize lst_len,
guint member_offset,
gboolean expect_all_exported)
{
const CList *iter;
const char **strv;
const char *path;
gsize i, n;
nm_assert (lst_head);
if (lst_len < 0)
n = c_list_length (lst_head);
else {
n = lst_len;
nm_assert (n == c_list_length (lst_head));
}
i = 0;
strv = g_new (const char *, n + 1);
c_list_for_each (iter, lst_head) {
NMDBusObject *obj = (NMDBusObject *) (((const char *) iter) - member_offset);
path = nm_dbus_object_get_path (obj);
if (!path) {
nm_assert (expect_all_exported);
continue;
}
nm_assert (i < n);
strv[i++] = path;
}
nm_assert (i <= n);
strv[i] = NULL;
return strv;
}
/*****************************************************************************/
void
nm_dbus_track_obj_path_init (NMDBusTrackObjPath *track,
GObject *target,
const GParamSpec *pspec)
{
nm_assert (track);
nm_assert (G_IS_OBJECT (target));
nm_assert (G_IS_PARAM_SPEC (pspec));
track->_obj = NULL;
track->_notify_target = target;
track->_notify_pspec = pspec;
track->_notify_signal_id = 0;
track->_visible = FALSE;
}
void
nm_dbus_track_obj_path_deinit (NMDBusTrackObjPath *track)
{
/* we allow deinit() to be called multiple times (e.g. from
* dispose(), which must be re-entrant). */
nm_assert (track);
nm_assert (!track->_notify_target || G_IS_OBJECT (track->_notify_target));
nm_clear_g_signal_handler (track->obj, &track->_notify_signal_id);
track->_notify_target = NULL;
track->_notify_pspec = NULL;
track->_visible = FALSE;
nm_clear_g_object (&track->_obj);
}
void
nm_dbus_track_obj_path_notify (const NMDBusTrackObjPath *track)
{
nm_assert (track);
nm_assert (G_IS_OBJECT (track->_notify_target));
nm_assert (G_IS_PARAM_SPEC (track->_notify_pspec));
g_object_notify_by_pspec (track->_notify_target,
(GParamSpec *) track->_notify_pspec);
}
const char *
nm_dbus_track_obj_path_get (const NMDBusTrackObjPath *track)
{
nm_assert (track);
nm_assert (G_IS_OBJECT (track->_notify_target));
return track->obj && track->visible
? nm_dbus_object_get_path_still_exported (track->obj)
: NULL;
}
static void
_track_obj_exported_changed (NMDBusObject *obj,
NMDBusTrackObjPath *track)
{
nm_dbus_track_obj_path_notify (track);
}
void
nm_dbus_track_obj_path_set (NMDBusTrackObjPath *track,
gpointer obj,
gboolean visible)
{
gs_unref_object NMDBusObject *old_obj = NULL;
const char *old_path;
nm_assert (track);
nm_assert (G_IS_OBJECT (track->_notify_target));
g_return_if_fail (!obj || NM_IS_DBUS_OBJECT (obj));
if ( track->obj == obj
&& track->visible == !!visible)
return;
old_path = nm_dbus_track_obj_path_get (track);
track->_visible = visible;
if (track->obj != obj) {
nm_clear_g_signal_handler (track->obj, &track->_notify_signal_id);
old_obj = track->obj;
track->_obj = nm_g_object_ref (obj);
if (obj) {
track->_notify_signal_id = g_signal_connect (obj,
NM_DBUS_OBJECT_EXPORTED_CHANGED,
G_CALLBACK (_track_obj_exported_changed),
track);
}
}
if (!nm_streq0 (old_path, nm_dbus_track_obj_path_get (track)))
nm_dbus_track_obj_path_notify (track);
}