1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
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;
}
|
