Программирование DBus

#include <stdio.h>
#include <glib.h>
#include <dbus/dbus-glib.h>

int
main (int argc, char **argv)
{
  DBusGConnection *connection;
  GError *error;
  DBusGProxy *proxy;
  char **name_list;
  char **name_list_ptr;
  GValue value = {0};
  const char *ver;
  
  g_type_init ();

  error = NULL;
  connection = dbus_g_bus_get (DBUS_BUS_SESSION,
                               &error);
  if (connection == NULL)
    {
      g_printerr ("Failed to open connection to bus: %s\n",
                  error->message);
      g_error_free (error);
      exit (1);
    }

  /* Create a proxy object for the "bus driver" (name "org.freedesktop.DBus") */
  
  proxy = dbus_g_proxy_new_for_name (connection,
                                     DBUS_SERVICE_DBUS,
                                     DBUS_PATH_DBUS,
                                     DBUS_INTERFACE_DBUS);

  /* Call ListNames method, wait for reply */
  error = NULL;
  if (!dbus_g_proxy_call (proxy, "ListNames", &error, G_TYPE_INVALID,
                          G_TYPE_STRV, &name_list, G_TYPE_INVALID))
    {
      /* Just do demonstrate remote exceptions versus regular GError */
      if (error->domain == DBUS_GERROR && error->code == DBUS_GERROR_REMOTE_EXCEPTION)
        g_printerr ("Caught remote method exception %s: %s",
	            dbus_g_error_get_name (error),
	            error->message);
      else
        g_printerr ("Error: %s\n", error->message);
      g_error_free (error);
      exit (1);
    }

  /* Print the results */
 
  g_print ("Names on the message bus:\n");
  
  for (name_list_ptr = name_list; *name_list_ptr; name_list_ptr++)
    {
      g_print ("  %s\n", *name_list_ptr);
    }
  g_strfreev (name_list);
  
  proxy = dbus_g_proxy_new_for_name(connection, "org.freedesktop.UDisks", "/org/freedesktop/UDisks", "org.freedesktop.DBus.Properties");
  
  if (proxy) {
	  if (dbus_g_proxy_call(proxy, "Get", &error,
                G_TYPE_STRING, "org.freedesktop.UDisks",
                G_TYPE_STRING, "DaemonVersion",
                G_TYPE_INVALID,
                G_TYPE_VALUE, &value,
                G_TYPE_INVALID)) {
				
		//ver = g_strdup (g_value_get_string (&value));
		ver = g_value_get_string(&value);
		g_print("UDisks-%s", ver);
	}
	else {
		g_printerr("Can not get Ver: %s\n", error->message);
		g_error_free (error);
	}
  }
  else {
	  g_printerr("Not UDisks\n");
  }

  g_object_unref (proxy);

  return 0;
}