249 lines
8.1 KiB
C
249 lines
8.1 KiB
C
/* -*- 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.
|
|
*
|
|
* (C) Copyright 2010 Red Hat, Inc.
|
|
*/
|
|
|
|
/*
|
|
* The example shows how to call the D-Bus properties interface to get the
|
|
* list of currently active connections known to NetworkManager. It uses
|
|
* dbus-glib and libnm-util libraries.
|
|
*
|
|
* Compile with:
|
|
* gcc -Wall `pkg-config --libs --cflags glib-2.0 dbus-glib-1 libnm-util` get-active-connections-dbus-glib.c -o get-active-connections-dbus-glib
|
|
*/
|
|
|
|
#include <glib.h>
|
|
#include <dbus/dbus-glib.h>
|
|
|
|
#include <nm-connection.h>
|
|
#include <nm-setting-connection.h>
|
|
#include <nm-setting-wired.h>
|
|
#include <nm-setting-ip4-config.h>
|
|
#include <NetworkManager.h>
|
|
#include <nm-utils.h>
|
|
|
|
#define DBUS_TYPE_G_MAP_OF_VARIANT (dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, G_TYPE_VALUE))
|
|
#define DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT (dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, DBUS_TYPE_G_MAP_OF_VARIANT))
|
|
#define DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH (dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH))
|
|
|
|
static void
|
|
print_connection (DBusGConnection *bus, const char *service, const char *path)
|
|
{
|
|
DBusGProxy *proxy;
|
|
GError *error = NULL;
|
|
GHashTable *hash = NULL;
|
|
NMConnection *connection = NULL;
|
|
|
|
/* This function asks the Settings Service that provides this network
|
|
* configuration for the details of that configuration.
|
|
*/
|
|
|
|
/* Create the D-Bus proxy for the Settings Service so we can ask it for the
|
|
* connection configuration details.
|
|
*/
|
|
proxy = dbus_g_proxy_new_for_name (bus,
|
|
service,
|
|
path,
|
|
NM_DBUS_IFACE_SETTINGS_CONNECTION);
|
|
g_assert (proxy);
|
|
|
|
/* Request the all the configuration of the Connection */
|
|
if (!dbus_g_proxy_call (proxy, "GetSettings", &error,
|
|
G_TYPE_INVALID,
|
|
DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, &hash,
|
|
G_TYPE_INVALID)) {
|
|
g_warning ("Failed to get active connection Connection property: %s",
|
|
error->message);
|
|
g_error_free (error);
|
|
goto out;
|
|
}
|
|
|
|
/* Using the raw configuration, create an NMConnection object for it. This
|
|
* step also verifies that the data we got from the settings service is
|
|
* valid. */
|
|
connection = nm_connection_new_from_hash (hash, &error);
|
|
if (!connection) {
|
|
g_warning ("Received invalid connection data: %s", error->message);
|
|
g_error_free (error);
|
|
goto out;
|
|
}
|
|
|
|
/* And finally dump all the configuration to stdout */
|
|
g_message ("%s => %s", service, path);
|
|
nm_connection_dump (connection);
|
|
|
|
out:
|
|
if (connection)
|
|
g_object_unref (connection);
|
|
if (hash)
|
|
g_hash_table_destroy (hash);
|
|
g_object_unref (proxy);
|
|
}
|
|
|
|
static void
|
|
get_active_connection_details (DBusGConnection *bus, const char *obj_path)
|
|
{
|
|
DBusGProxy *props_proxy;
|
|
GValue path_value = { 0 };
|
|
GValue serv_value = { 0 };
|
|
GError *error = NULL;
|
|
const char *path = NULL, *service = NULL;
|
|
|
|
/* This function gets the backing Connection object that describes the
|
|
* network configuration that the ActiveConnection object is actually using.
|
|
* The ActiveConnection object contains the mapping between the configuration
|
|
* and the actual network interfaces that are using that configuration.
|
|
*/
|
|
|
|
/* Create a D-Bus object proxy for the active connection object's properties */
|
|
props_proxy = dbus_g_proxy_new_for_name (bus,
|
|
NM_DBUS_SERVICE,
|
|
obj_path,
|
|
DBUS_INTERFACE_PROPERTIES);
|
|
g_assert (props_proxy);
|
|
|
|
/* Get the object path of the Connection details */
|
|
if (!dbus_g_proxy_call (props_proxy, "Get", &error,
|
|
G_TYPE_STRING, NM_DBUS_INTERFACE_ACTIVE_CONNECTION,
|
|
G_TYPE_STRING, "Connection",
|
|
G_TYPE_INVALID,
|
|
G_TYPE_VALUE, &path_value,
|
|
G_TYPE_INVALID)) {
|
|
g_warning ("Failed to get active connection Connection property: %s",
|
|
error->message);
|
|
g_error_free (error);
|
|
goto out;
|
|
}
|
|
|
|
if (!G_VALUE_HOLDS (&path_value, DBUS_TYPE_G_OBJECT_PATH)) {
|
|
g_warning ("Unexpected type returned getting Connection property: %s",
|
|
G_VALUE_TYPE_NAME (&path_value));
|
|
goto out;
|
|
}
|
|
|
|
path = g_value_get_boxed (&path_value);
|
|
if (!path) {
|
|
g_warning ("Missing connection path!");
|
|
goto out;
|
|
}
|
|
|
|
/* Get the service name of the D-Bus service that provides the Connection */
|
|
if (!dbus_g_proxy_call (props_proxy, "Get", &error,
|
|
G_TYPE_STRING, NM_DBUS_INTERFACE_ACTIVE_CONNECTION,
|
|
G_TYPE_STRING, "ServiceName",
|
|
G_TYPE_INVALID,
|
|
G_TYPE_VALUE, &serv_value,
|
|
G_TYPE_INVALID)) {
|
|
g_warning ("Failed to get active connection ServiceName property: %s",
|
|
error->message);
|
|
g_error_free (error);
|
|
goto out;
|
|
}
|
|
|
|
if (!G_VALUE_HOLDS (&serv_value, G_TYPE_STRING)) {
|
|
g_warning ("Unexpected type returned getting Connection property: %s",
|
|
G_VALUE_TYPE_NAME (&serv_value));
|
|
goto out;
|
|
}
|
|
|
|
service = g_value_get_string (&serv_value);
|
|
if (!service) {
|
|
g_warning ("Missing connection service name!");
|
|
goto out;
|
|
}
|
|
|
|
/* Print out the actual connection details */
|
|
print_connection (bus, service, path);
|
|
|
|
out:
|
|
g_value_unset (&path_value);
|
|
g_value_unset (&serv_value);
|
|
g_object_unref (props_proxy);
|
|
}
|
|
|
|
static void
|
|
get_active_connections (DBusGConnection *bus, DBusGProxy *proxy)
|
|
{
|
|
GError *error = NULL;
|
|
GValue value = { 0 };
|
|
GPtrArray *paths = NULL;
|
|
int i;
|
|
|
|
/* Get the ActiveConnections property from the NM Manager object */
|
|
if (!dbus_g_proxy_call (proxy, "Get", &error,
|
|
G_TYPE_STRING, NM_DBUS_INTERFACE,
|
|
G_TYPE_STRING, "ActiveConnections",
|
|
G_TYPE_INVALID,
|
|
G_TYPE_VALUE, &value,
|
|
G_TYPE_INVALID)) {
|
|
g_warning ("Failed to get ActiveConnections property: %s", error->message);
|
|
g_error_free (error);
|
|
return;
|
|
}
|
|
|
|
/* Make sure the ActiveConnections property is the type we expect it to be */
|
|
if (!G_VALUE_HOLDS (&value, DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH)) {
|
|
g_warning ("Unexpected type returned getting ActiveConnections: %s",
|
|
G_VALUE_TYPE_NAME (&value));
|
|
goto out;
|
|
}
|
|
|
|
/* Extract the active connections array from the GValue */
|
|
paths = g_value_get_boxed (&value);
|
|
if (!paths) {
|
|
g_warning ("Could not retrieve active connections property");
|
|
goto out;
|
|
}
|
|
|
|
/* And print out the details of each active connection */
|
|
for (i = 0; i < paths->len; i++)
|
|
get_active_connection_details (bus, g_ptr_array_index (paths, i));
|
|
|
|
out:
|
|
g_value_unset (&value);
|
|
}
|
|
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
DBusGConnection *bus;
|
|
DBusGProxy *props_proxy;
|
|
|
|
/* Initialize GType system */
|
|
g_type_init ();
|
|
|
|
/* Get system bus */
|
|
bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, NULL);
|
|
|
|
/* Create a D-Bus proxy to get the object properties from the NM Manager
|
|
* object. NM_DBUS_* defines are from NetworkManager.h.
|
|
*/
|
|
props_proxy = dbus_g_proxy_new_for_name (bus,
|
|
NM_DBUS_SERVICE,
|
|
NM_DBUS_PATH,
|
|
DBUS_INTERFACE_PROPERTIES);
|
|
g_assert (props_proxy);
|
|
|
|
/* Get active connections */
|
|
get_active_connections (bus, props_proxy);
|
|
|
|
g_object_unref (props_proxy);
|
|
dbus_g_connection_unref (bus);
|
|
|
|
return 0;
|
|
}
|