8bace23beb
- All internal source files (except "examples", which are not internal) should include "config.h" first. As also all internal source files should include "nm-default.h", let "config.h" be included by "nm-default.h" and include "nm-default.h" as first in every source file. We already wanted to include "nm-default.h" before other headers because it might contains some fixes (like "nm-glib.h" compatibility) that is required first. - After including "nm-default.h", we optinally allow for including the corresponding header file for the source file at hand. The idea is to ensure that each header file is self contained. - Don't include "config.h" or "nm-default.h" in any header file (except "nm-sd-adapt.h"). Public headers anyway must not include these headers, and internal headers are never included after "nm-default.h", as of the first previous point. - Include all internal headers with quotes instead of angle brackets. In practice it doesn't matter, because in our public headers we must include other headers with angle brackets. As we use our public headers also to compile our interal source files, effectively the result must be the same. Still do it for consistency. - Except for <config.h> itself. Include it with angle brackets as suggested by https://www.gnu.org/software/autoconf/manual/autoconf.html#Configuration-Headers
273 lines
8.7 KiB
C
273 lines
8.7 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 list
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* of currently active connections known to NetworkManager. It uses GDBus, plus
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* a few defines from the NetworkManager headers.
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*
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* Compile with:
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* gcc -Wall `pkg-config --cflags libnm` `pkg-config --cflags --libs gio-2.0` get-active-connections-gdbus.c -o get-active-connections-gdbus
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*/
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#include <string.h>
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#include <gio/gio.h>
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#include <NetworkManager.h>
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static void
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print_setting (const char *setting_name, GVariant *setting)
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{
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GVariantIter iter;
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const char *property_name;
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GVariant *value;
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char *printed_value;
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g_print (" %s:\n", setting_name);
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g_variant_iter_init (&iter, setting);
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while (g_variant_iter_next (&iter, "{&sv}", &property_name, &value)) {
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printed_value = g_variant_print (value, FALSE);
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if (strcmp (printed_value, "[]") != 0)
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g_print (" %s: %s\n", property_name, printed_value);
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g_free (printed_value);
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g_variant_unref (value);
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}
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}
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static void
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print_connection (const char *path)
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{
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GDBusProxy *proxy;
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GError *error = NULL;
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GVariant *ret, *connection = NULL, *s_con = NULL;
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const char *id, *type;
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gboolean found;
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GVariantIter iter;
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const char *setting_name;
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GVariant *setting;
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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 = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
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G_DBUS_PROXY_FLAGS_NONE,
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NULL,
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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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NULL, NULL);
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g_assert (proxy);
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/* Request the all the configuration of the Connection */
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ret = g_dbus_proxy_call_sync (proxy,
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"GetSettings",
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NULL,
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G_DBUS_CALL_FLAGS_NONE, -1,
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NULL, &error);
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if (!ret) {
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g_dbus_error_strip_remote_error (error);
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g_warning ("Failed to get connection settings: %s\n", error->message);
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g_error_free (error);
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goto out;
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}
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g_variant_get (ret, "(@a{sa{sv}})", &connection);
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s_con = g_variant_lookup_value (connection, NM_SETTING_CONNECTION_SETTING_NAME, NULL);
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g_assert (s_con != NULL);
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found = g_variant_lookup (s_con, NM_SETTING_CONNECTION_ID, "&s", &id);
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g_assert (found);
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found = g_variant_lookup (s_con, NM_SETTING_CONNECTION_TYPE, "&s", &type);
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g_assert (found);
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/* Dump the configuration to stdout */
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g_print ("%s <=> %s\n", id, path);
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/* Connection setting first */
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print_setting (NM_SETTING_CONNECTION_SETTING_NAME, s_con);
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/* Then the type-specific setting */
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setting = g_variant_lookup_value (connection, type, NULL);
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if (setting) {
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print_setting (type, setting);
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g_variant_unref (setting);
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}
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g_variant_iter_init (&iter, connection);
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while (g_variant_iter_next (&iter, "{&s@a{sv}}", &setting_name, &setting)) {
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if ( strcmp (setting_name, NM_SETTING_CONNECTION_SETTING_NAME) != 0
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&& strcmp (setting_name, type) != 0)
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print_setting (setting_name, setting);
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g_variant_unref (setting);
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}
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g_print ("\n");
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out:
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if (s_con)
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g_variant_unref (s_con);
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if (connection)
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g_variant_unref (connection);
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if (ret)
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g_variant_unref (ret);
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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 (const char *obj_path)
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{
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GDBusProxy *props_proxy;
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GVariant *ret = NULL, *path_value = NULL;
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const char *path = NULL;
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GError *error = 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 = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
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G_DBUS_PROXY_FLAGS_NONE,
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NULL,
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NM_DBUS_SERVICE,
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obj_path,
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"org.freedesktop.DBus.Properties",
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NULL, NULL);
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g_assert (props_proxy);
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/* Get the object path of the Connection details */
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ret = g_dbus_proxy_call_sync (props_proxy,
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"Get",
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g_variant_new ("(ss)",
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NM_DBUS_INTERFACE_ACTIVE_CONNECTION,
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"Connection"),
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G_DBUS_CALL_FLAGS_NONE, -1,
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NULL, &error);
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if (!ret) {
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g_dbus_error_strip_remote_error (error);
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g_warning ("Failed to get active connection Connection property: %s\n",
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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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g_variant_get (ret, "(v)", &path_value);
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if (!g_variant_is_of_type (path_value, G_VARIANT_TYPE_OBJECT_PATH)) {
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g_warning ("Unexpected type returned getting Connection property: %s",
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g_variant_get_type_string (path_value));
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goto out;
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}
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path = g_variant_get_string (path_value, NULL);
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/* Print out the actual connection details */
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print_connection (path);
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out:
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if (path_value)
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g_variant_unref (path_value);
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if (ret)
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g_variant_unref (ret);
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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 (GDBusProxy *proxy)
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{
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GError *error = NULL;
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GVariant *ret = NULL, *value = NULL;
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char **paths;
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int i;
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/* Get the ActiveConnections property from the NM Manager object */
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ret = g_dbus_proxy_call_sync (proxy,
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"Get",
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g_variant_new ("(ss)",
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NM_DBUS_INTERFACE,
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"ActiveConnections"),
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G_DBUS_CALL_FLAGS_NONE, -1,
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NULL, &error);
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if (!ret) {
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g_dbus_error_strip_remote_error (error);
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g_warning ("Failed to get ActiveConnections property: %s\n", error->message);
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g_error_free (error);
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return;
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}
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g_variant_get (ret, "(v)", &value);
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/* Make sure the ActiveConnections property is the type we expect it to be */
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if (!g_variant_is_of_type (value, G_VARIANT_TYPE ("ao"))) {
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g_warning ("Unexpected type returned getting ActiveConnections: %s",
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g_variant_get_type_string (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_variant_dup_objv (value, NULL);
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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; paths[i]; i++) {
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g_print ("Active connection path: %s\n", paths[i]);
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get_active_connection_details (paths[i]);
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}
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g_strfreev (paths);
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out:
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if (value)
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g_variant_unref (value);
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if (ret)
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g_variant_unref (ret);
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}
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int
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main (int argc, char *argv[])
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{
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GDBusProxy *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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/* 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 = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
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G_DBUS_PROXY_FLAGS_NONE,
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NULL,
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NM_DBUS_SERVICE,
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NM_DBUS_PATH,
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"org.freedesktop.DBus.Properties",
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NULL, NULL);
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g_assert (props_proxy);
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/* Get active connections */
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get_active_connections (props_proxy);
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g_object_unref (props_proxy);
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return 0;
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}
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