d0b05b34d5
Add NetworkManager.h, which includes all of the other NM header, and require all external users of libnm to use that rather than the individual headers. (An exception is made for nm-dbus-interface.h, nm-vpn-dbus-interface.h, and nm-version.h, which can be included separately.)
219 lines
7.1 KiB
C
219 lines
7.1 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* (C) Copyright 2010 -2014 Red Hat, Inc.
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*/
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/*
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* The example shows how to call the D-Bus properties interface to get the
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* list of currently active connections known to NetworkManager. It uses
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* dbus-glib and libnm libraries.
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*
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* Compile with:
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* gcc -Wall `pkg-config --libs --cflags glib-2.0 dbus-glib-1 libnm` get-active-connections-dbus-glib.c -o get-active-connections-dbus-glib
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*/
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#include <stdio.h>
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#include <glib.h>
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#include <dbus/dbus-glib.h>
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#include <NetworkManager.h>
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#define DBUS_TYPE_G_MAP_OF_VARIANT (dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, G_TYPE_VALUE))
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#define DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT (dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, DBUS_TYPE_G_MAP_OF_VARIANT))
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#define DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH (dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH))
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static void
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print_connection (DBusGConnection *bus, const char *path)
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{
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DBusGProxy *proxy;
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GError *error = NULL;
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GHashTable *hash = NULL;
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NMConnection *connection = NULL;
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/* This function asks NetworkManager for the details of the connection */
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/* Create the D-Bus proxy so we can ask it for the connection configuration details. */
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proxy = dbus_g_proxy_new_for_name (bus,
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NM_DBUS_SERVICE,
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path,
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NM_DBUS_INTERFACE_SETTINGS_CONNECTION);
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g_assert (proxy);
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/* Request the all the configuration of the Connection */
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if (!dbus_g_proxy_call (proxy, "GetSettings", &error,
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G_TYPE_INVALID,
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DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, &hash,
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G_TYPE_INVALID)) {
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g_warning ("Failed to get active connection Connection property: %s",
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error->message);
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g_error_free (error);
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goto out;
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}
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/* Using the raw configuration, create an NMConnection object for it. This
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* step also verifies that the data we got from NetworkManager are valid. */
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connection = nm_connection_new_from_hash (hash, &error);
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if (!connection) {
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g_warning ("Received invalid connection data: %s", error->message);
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g_error_free (error);
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goto out;
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}
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/* And finally dump all the configuration to stdout */
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printf ("%s <=> %s\n", nm_connection_get_id (connection), path);
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nm_connection_dump (connection);
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out:
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if (connection)
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g_object_unref (connection);
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if (hash)
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g_hash_table_destroy (hash);
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g_object_unref (proxy);
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}
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static void
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get_active_connection_details (DBusGConnection *bus, const char *obj_path)
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{
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DBusGProxy *props_proxy;
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GValue path_value = G_VALUE_INIT;
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GError *error = NULL;
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const char *path = NULL;
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/* This function gets the backing Connection object that describes the
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* network configuration that the ActiveConnection object is actually using.
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* The ActiveConnection object contains the mapping between the configuration
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* and the actual network interfaces that are using that configuration.
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*/
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/* Create a D-Bus object proxy for the active connection object's properties */
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props_proxy = dbus_g_proxy_new_for_name (bus,
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NM_DBUS_SERVICE,
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obj_path,
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DBUS_INTERFACE_PROPERTIES);
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g_assert (props_proxy);
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/* Get the object path of the Connection details */
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if (!dbus_g_proxy_call (props_proxy, "Get", &error,
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G_TYPE_STRING, NM_DBUS_INTERFACE_ACTIVE_CONNECTION,
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G_TYPE_STRING, "Connection",
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G_TYPE_INVALID,
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G_TYPE_VALUE, &path_value,
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G_TYPE_INVALID)) {
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g_warning ("Failed to get active connection Connection property: %s",
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error->message);
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g_error_free (error);
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goto out;
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}
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if (!G_VALUE_HOLDS (&path_value, DBUS_TYPE_G_OBJECT_PATH)) {
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g_warning ("Unexpected type returned getting Connection property: %s",
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G_VALUE_TYPE_NAME (&path_value));
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goto out;
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}
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path = g_value_get_boxed (&path_value);
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if (!path) {
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g_warning ("Missing connection path!");
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goto out;
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}
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/* Print out the actual connection details */
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print_connection (bus, path);
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out:
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g_value_unset (&path_value);
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g_object_unref (props_proxy);
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}
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static void
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get_active_connections (DBusGConnection *bus, DBusGProxy *proxy)
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{
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GError *error = NULL;
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GValue value = G_VALUE_INIT;
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GPtrArray *paths = NULL;
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const char *a_path;
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int i;
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/* Get the ActiveConnections property from the NM Manager object */
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if (!dbus_g_proxy_call (proxy, "Get", &error,
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G_TYPE_STRING, NM_DBUS_INTERFACE,
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G_TYPE_STRING, "ActiveConnections",
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G_TYPE_INVALID,
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G_TYPE_VALUE, &value,
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G_TYPE_INVALID)) {
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g_warning ("Failed to get ActiveConnections property: %s", error->message);
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g_error_free (error);
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return;
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}
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/* Make sure the ActiveConnections property is the type we expect it to be */
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if (!G_VALUE_HOLDS (&value, DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH)) {
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g_warning ("Unexpected type returned getting ActiveConnections: %s",
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G_VALUE_TYPE_NAME (&value));
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goto out;
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}
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/* Extract the active connections array from the GValue */
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paths = g_value_get_boxed (&value);
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if (!paths) {
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g_warning ("Could not retrieve active connections property");
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goto out;
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}
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/* And print out the details for each active connection */
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for (i = 0; i < paths->len; i++) {
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a_path = g_ptr_array_index (paths, i);
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printf ("Active connection path: %s\n", a_path);
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get_active_connection_details (bus, a_path);
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}
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out:
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g_value_unset (&value);
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}
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int main (int argc, char *argv[])
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{
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DBusGConnection *bus;
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DBusGProxy *props_proxy;
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#if !GLIB_CHECK_VERSION (2, 35, 0)
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/* Initialize GType system */
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g_type_init ();
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#endif
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/* Get system bus */
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bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, NULL);
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/* Create a D-Bus proxy to get the object properties from the NM Manager
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* object. NM_DBUS_* defines are from nm-dbus-interface.h.
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*/
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props_proxy = dbus_g_proxy_new_for_name (bus,
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NM_DBUS_SERVICE,
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NM_DBUS_PATH,
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DBUS_INTERFACE_PROPERTIES);
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g_assert (props_proxy);
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/* Get active connections */
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get_active_connections (bus, props_proxy);
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g_object_unref (props_proxy);
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dbus_g_connection_unref (bus);
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return 0;
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}
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