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Diffstat (limited to 'examples/C/list-connections-libnm-glib.c')
| -rw-r--r-- | examples/C/list-connections-libnm-glib.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/examples/C/list-connections-libnm-glib.c b/examples/C/list-connections-libnm-glib.c new file mode 100644 index 00000000..edb5ccc3 --- /dev/null +++ b/examples/C/list-connections-libnm-glib.c @@ -0,0 +1,176 @@ +/* + * 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-glib + * (that wraps direct D-Bus calls). + * The example uses dbus-glib, libnm-util and libnm-glib libraries. + * + * Compile with: + * gcc -Wall `pkg-config --libs --cflags glib-2.0 dbus-glib-1 libnm-util libnm-glib` list-connections-libnm-glib.c -o list-connections-libnm-glib + */ + +#include <glib.h> +#include <dbus/dbus-glib.h> +#include <stdio.h> +#include <stdlib.h> +#include <signal.h> + +#include <nm-connection.h> +#include <nm-setting-connection.h> +#include <NetworkManager.h> +#include <nm-utils.h> +#include <nm-remote-settings.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 (NMConnection *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 = (NMSettingConnection *) nm_connection_get_setting (connection, NM_TYPE_SETTING_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, (GFunc) 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) +{ + DBusGConnection *bus = (DBusGConnection *) data; + NMRemoteSettings *settings; + gboolean settings_running; + + /* Get system settings */ + if (!(settings = nm_remote_settings_new (bus))) { + g_message ("Error: Could not get system settings."); + 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; + + /* Initialize GType system */ + g_type_init (); + + /* 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; +} |