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/*
* 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 2011 Red Hat, Inc.
*/
/*
* The example shows how to list connections from System Settings service using libnm
* (that wraps direct D-Bus calls).
*
* Compile with:
* gcc -Wall `pkg-config --libs --cflags glib-2.0 libnm` list-connections-libnm.c -o list-connections-libnm
*/
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <NetworkManager.h>
/* Global variables */
GMainLoop *loop = NULL; /* Main loop variable - needed for waiting for signal */
int result = EXIT_SUCCESS;
static void
signal_handler (int signo)
{
if (signo == SIGINT || signo == SIGTERM) {
g_message ("Caught signal %d, shutting down...", signo);
g_main_loop_quit (loop);
}
}
static void
setup_signals (void)
{
struct sigaction action;
sigset_t mask;
sigemptyset (&mask);
action.sa_handler = signal_handler;
action.sa_mask = mask;
action.sa_flags = 0;
sigaction (SIGTERM, &action, NULL);
sigaction (SIGINT, &action, NULL);
}
/* Print details of connection */
static void
show_connection (gpointer data, gpointer user_data)
{
NMConnection *connection = (NMConnection *) data;
NMSettingConnection *s_con;
guint64 timestamp;
char *timestamp_str;
char timestamp_real_str[64];
const char *val1, *val2, *val3, *val4, *val5;
s_con = nm_connection_get_setting_connection (connection);
if (s_con) {
/* Get various info from NMSettingConnection and show it */
timestamp = nm_setting_connection_get_timestamp (s_con);
timestamp_str = g_strdup_printf ("%" G_GUINT64_FORMAT, timestamp);
strftime (timestamp_real_str, sizeof (timestamp_real_str), "%c", localtime ((time_t *) ×tamp));
val1 = nm_setting_connection_get_id (s_con);
val2 = nm_setting_connection_get_uuid (s_con);
val3 = nm_setting_connection_get_connection_type (s_con);
val4 = nm_connection_get_path (connection);
val5 = timestamp ? timestamp_real_str : "never";
printf ("%-25s | %s | %-15s | %-43s | %s\n", val1, val2, val3, val4, val5);
g_free (timestamp_str);
}
}
/* This callback is called when connections from the settings service are ready.
* Now the connections can be listed.
*/
static void
get_connections_cb (NMRemoteSettings *settings, gpointer user_data)
{
GSList *connections;
connections = nm_remote_settings_list_connections (settings);
printf ("Connections:\n===================\n");
g_slist_foreach (connections, show_connection, NULL);
g_slist_free (connections);
g_object_unref (settings);
/* We are done, exit main loop */
g_main_loop_quit (loop);
}
/* Get system settings and then connect to connections-read signal */
static gboolean
list_connections (gpointer data)
{
NMRemoteSettings *settings;
gboolean settings_running;
GError *error = NULL;
/* Get system settings */
if (!(settings = nm_remote_settings_new (NULL, &error))) {
g_message ("Error: Could not get system settings: %s.", error->message);
g_error_free (error);
result = EXIT_FAILURE;
g_main_loop_quit (loop);
return FALSE;
}
/* Find out whether setting service is running */
g_object_get (settings, NM_REMOTE_SETTINGS_SERVICE_RUNNING, &settings_running, NULL);
if (!settings_running) {
g_message ("Error: Can't obtain connections: settings service is not running.");
result = EXIT_FAILURE;
g_main_loop_quit (loop);
return FALSE;
}
/* Connect to signal "connections-read" - emitted when connections are fetched and ready */
g_signal_connect (settings, NM_REMOTE_SETTINGS_CONNECTIONS_READ,
G_CALLBACK (get_connections_cb), NULL);
return FALSE;
}
int main (int argc, char *argv[])
{
DBusGConnection *bus;
#if !GLIB_CHECK_VERSION (2, 35, 0)
/* Initialize GType system */
g_type_init ();
#endif
/* Get system bus */
bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, NULL);
/* Run list_connections from main loop, because we need to wait for "connections-read"
* signal to have connections ready. The execution will be finished in get_connections_cb()
* callback on the signal.
*/
g_idle_add (list_connections, bus);
loop = g_main_loop_new (NULL, FALSE); /* Create main loop */
setup_signals (); /* Setup UNIX signals */
g_main_loop_run (loop); /* Run main loop */
g_main_loop_unref (loop);
dbus_g_connection_unref (bus);
return result;
}
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