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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/*
* 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 2012 Red Hat, Inc.
*/
/*
* This example monitors NM state via D-Bus "StateChanged" signal on
* "org.freedesktop.NetworkManager" object.
* It uses GDBus and the libnm headers.
* You don't need to have the NetworkManager devel packages installed. You can just
* grab nm-dbus-interface.h and put it in the path.
*
* Standalone compilation:
* gcc -Wall monitor-nm-state-gdbus.c -o monitor-nm-state-gdbus `pkg-config --cflags --libs libnm`
*/
#include <gio/gio.h>
#include <string.h>
#include <nm-dbus-interface.h>
static const char *
nm_state_to_string (NMState state)
{
switch (state) {
case NM_STATE_ASLEEP:
return "asleep";
case NM_STATE_CONNECTING:
return "connecting";
case NM_STATE_CONNECTED_LOCAL:
return "connected (local only)";
case NM_STATE_CONNECTED_SITE:
return "connected (site only)";
case NM_STATE_CONNECTED_GLOBAL:
return "connected";
case NM_STATE_DISCONNECTING:
return "disconnecting";
case NM_STATE_DISCONNECTED:
return "disconnected";
case NM_STATE_UNKNOWN:
default:
return "unknown";
}
}
static void
on_signal (GDBusProxy *proxy,
gchar *sender_name,
gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
guint32 new_state;
/* Print all signals */
//gchar *parameters_str;
//parameters_str = g_variant_print (parameters, TRUE);
//g_print (" *** Received Signal: %s: %s\n", signal_name, parameters_str);
//g_free (parameters_str);
/* We are only interested in "StateChanged" signal */
if (strcmp (signal_name, "StateChanged") == 0) {
GVariant *tmp = g_variant_get_child_value (parameters, 0);
new_state = g_variant_get_uint32 (tmp);
g_variant_unref (tmp);
g_print ("NetworkManager state is: (%d) %s\n", new_state, nm_state_to_string ((NMState) new_state));
}
}
int
main (int argc, char *argv[])
{
GMainLoop *loop;
GError *error = NULL;
GDBusProxyFlags flags;
GDBusProxy *proxy;
#if !GLIB_CHECK_VERSION (2, 35, 0)
/* Initialize GType system */
g_type_init ();
#endif
/* Monitor 'StateChanged' signal on 'org.freedesktop.NetworkManager' interface */
g_print ("Monitor NetworkManager's state\n");
g_print ("==============================\n");
flags = G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES | G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START;
proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
flags,
NULL, /* GDBusInterfaceInfo */
"org.freedesktop.NetworkManager",
"/org/freedesktop/NetworkManager",
"org.freedesktop.NetworkManager",
NULL, /* GCancellable */
&error);
if (proxy == NULL)
{
g_dbus_error_strip_remote_error (error);
g_printerr ("Error creating D-Bus proxy: %s\n", error->message);
g_error_free (error);
return -1;
}
/* Connect to g-signal to receive signals from proxy (remote object) */
g_signal_connect (proxy,
"g-signal",
G_CALLBACK (on_signal),
NULL);
/* Run main loop */
loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (loop);
g_object_unref (proxy);
return 0;
}
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