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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright (C) 2007 - 2008 Novell, Inc.
* Copyright (C) 2008 - 2012 Red Hat, Inc.
*/
#include <string.h>
#include <stdio.h>
#include <dbus/dbus-glib.h>
#include "nm-logging.h"
#include "nm-properties-changed-signal.h"
#include "nm-dbus-glib-types.h"
typedef struct {
GHashTable *exported_props;
guint signal_id;
} NMPropertiesChangedClassInfo;
typedef struct {
GHashTable *hash;
guint signal_id;
guint idle_id;
} NMPropertiesChangedInfo;
static GQuark
nm_properties_changed_signal_quark (void)
{
static GQuark q;
if (G_UNLIKELY (q == 0))
q = g_quark_from_static_string ("nm-properties-changed-signal");
return q;
}
static void
destroy_value (gpointer data)
{
GValue *val = (GValue *) data;
g_value_unset (val);
g_slice_free (GValue, val);
}
static void
properties_changed_info_destroy (gpointer data)
{
NMPropertiesChangedInfo *info = data;
if (info->idle_id)
g_source_remove (info->idle_id);
g_hash_table_destroy (info->hash);
g_slice_free (NMPropertiesChangedInfo, info);
}
static void
add_to_string (gpointer key, gpointer value, gpointer user_data)
{
const char *name = (const char *) key;
GString *buf = user_data;
GValue str_val = G_VALUE_INIT;
g_value_init (&str_val, G_TYPE_STRING);
if (!g_value_transform ((GValue *) value, &str_val)) {
if (G_VALUE_HOLDS_OBJECT (value)) {
GObject *obj = g_value_get_object (value);
if (obj) {
g_string_append_printf (buf, "{%s: %p (%s)}, ", name, obj,
G_OBJECT_TYPE_NAME (obj));
} else
g_string_append_printf (buf, "{%s: %p}, ", name, obj);
} else
g_string_append_printf (buf, "{%s: <transform error>}, ", name);
} else
g_string_append_printf (buf, "{%s: %s}, ", name, g_value_get_string (&str_val));
g_value_unset (&str_val);
}
static gboolean
properties_changed (gpointer data)
{
GObject *object = G_OBJECT (data);
NMPropertiesChangedInfo *info = g_object_get_qdata (object, nm_properties_changed_signal_quark ());
g_assert (info);
if (nm_logging_enabled (LOGL_DEBUG, LOGD_DBUS_PROPS)) {
GString *buf = g_string_new (NULL);
g_hash_table_foreach (info->hash, add_to_string, buf);
nm_log_dbg (LOGD_DBUS_PROPS, "%s -> %s", G_OBJECT_TYPE_NAME (object), buf->str);
g_string_free (buf, TRUE);
}
g_signal_emit (object, info->signal_id, 0, info->hash);
g_hash_table_remove_all (info->hash);
return FALSE;
}
static void
idle_id_reset (gpointer data)
{
GObject *object = G_OBJECT (data);
NMPropertiesChangedInfo *info = g_object_get_qdata (object, nm_properties_changed_signal_quark ());
/* info is unset when the object is being destroyed */
if (info)
info->idle_id = 0;
}
static void
notify (GObject *object, GParamSpec *pspec)
{
NMPropertiesChangedClassInfo *classinfo;
NMPropertiesChangedInfo *info;
const char *dbus_property_name = NULL;
GValue *value;
GType type;
for (type = G_OBJECT_TYPE (object); type; type = g_type_parent (type)) {
classinfo = g_type_get_qdata (type, nm_properties_changed_signal_quark ());
if (!classinfo)
continue;
dbus_property_name = g_hash_table_lookup (classinfo->exported_props, pspec->name);
if (dbus_property_name)
break;
}
if (!dbus_property_name) {
nm_log_dbg (LOGD_DBUS_PROPS, "ignoring notification for prop %s on type %s",
pspec->name, G_OBJECT_TYPE_NAME (object));
return;
}
info = g_object_get_qdata (object, nm_properties_changed_signal_quark ());
if (!info) {
info = g_slice_new0 (NMPropertiesChangedInfo);
info->hash = g_hash_table_new_full (g_str_hash, g_str_equal,
NULL, destroy_value);
info->signal_id = classinfo->signal_id;
g_object_set_qdata_full (object, nm_properties_changed_signal_quark (),
info, properties_changed_info_destroy);
}
value = g_slice_new0 (GValue);
g_value_init (value, pspec->value_type);
g_object_get_property (object, pspec->name, value);
g_hash_table_insert (info->hash, (char *) dbus_property_name, value);
if (!info->idle_id)
info->idle_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, properties_changed, object, idle_id_reset);
}
static NMPropertiesChangedClassInfo *
nm_properties_changed_signal_setup_type (GType type)
{
NMPropertiesChangedClassInfo *classinfo;
NMPropertiesChangedClassInfo *parent_classinfo = NULL;
GObjectClass *object_class;
GType parent;
classinfo = g_slice_new (NMPropertiesChangedClassInfo);
g_type_set_qdata (type, nm_properties_changed_signal_quark (), classinfo);
object_class = g_type_class_ref (type);
object_class->notify = notify;
g_type_class_unref (object_class);
classinfo->exported_props = g_hash_table_new (g_str_hash, g_str_equal);
/* See if we've already added the signal to a parent class. (We can't just use
* g_signal_lookup() here because it prints a warning if the signal doesn't exist!)
*/
parent = g_type_parent (type);
while (parent) {
parent_classinfo = g_type_get_qdata (parent, nm_properties_changed_signal_quark ());
if (parent_classinfo)
break;
parent = g_type_parent (parent);
}
if (parent_classinfo)
classinfo->signal_id = parent_classinfo->signal_id;
else {
classinfo->signal_id = g_signal_new ("properties-changed",
type,
G_SIGNAL_RUN_FIRST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__BOXED,
G_TYPE_NONE, 1, DBUS_TYPE_G_MAP_OF_VARIANT);
}
return classinfo;
}
void
nm_properties_changed_signal_add_property (GType type,
const char *dbus_property_name,
const char *gobject_property_name)
{
NMPropertiesChangedClassInfo *classinfo;
char *hyphen_name, *p;
classinfo = g_type_get_qdata (type, nm_properties_changed_signal_quark ());
if (!classinfo)
classinfo = nm_properties_changed_signal_setup_type (type);
g_hash_table_insert (classinfo->exported_props,
(char *) gobject_property_name,
(char *) dbus_property_name);
hyphen_name = g_strdup (gobject_property_name);
for (p = hyphen_name; *p; p++) {
if (*p == '_')
*p = '-';
}
g_hash_table_insert (classinfo->exported_props,
hyphen_name,
(char *) dbus_property_name);
}
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