test: add C example for printing active connection details

examples/C/Makefile.am

@@ -6,7 +6,7 @@ AM_CPPFLAGS = \
 	$(DBUS_CFLAGS) \
 	$(GLIB_CFLAGS)
 
-noinst_PROGRAMS = add-connection-glib
+noinst_PROGRAMS = add-connection-glib get-active-connections
 
 add_connection_glib_SOURCES = add-connection-glib.c
 add_connection_glib_LDADD = \
@@ -14,6 +14,13 @@ add_connection_glib_LDADD = \
 	$(DBUS_LIBS) \
 	$(GLIB_LIBS)
 
-EXTRA_DIST = \
-	add-connection-glib.c
+get_active_connections_SOURCES = get-active-connections.c
+get_active_connections_LDADD = \
+	$(top_builddir)/libnm-util/libnm-util.la \
+	$(DBUS_LIBS) \
+	$(GLIB_LIBS)
+
+EXTRA_DIST = \
+	add-connection-glib.c \
+	get-active-connections.c
 

examples/C/get-active-connections.c

@@ -0,0 +1,225 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+/*
+ * 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 2010 Red Hat, Inc.
+ */
+
+/*
+ * The example shows how to call the D-Bus properties interface to get the
+ * list of currently active connections known to NetworkManager.  It uses
+ * dbus-glib and libnm-util libraries.
+ *
+ * Compile with:
+ *   gcc -Wall `pkg-config --libs --cflags glib-2.0 dbus-glib-1 libnm-util` get-active-connections.c -o get-active-connections
+ */
+
+#include <glib.h>
+#include <dbus/dbus-glib.h>
+
+#include <nm-connection.h>
+#include <nm-setting-connection.h>
+#include <nm-setting-wired.h>
+#include <nm-setting-ip4-config.h>
+#include <NetworkManager.h>
+#include <nm-utils.h>
+
+#define DBUS_TYPE_G_MAP_OF_VARIANT          (dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, G_TYPE_VALUE))
+#define DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT   (dbus_g_type_get_map ("GHashTable", G_TYPE_STRING, DBUS_TYPE_G_MAP_OF_VARIANT))
+#define DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH    (dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH))
+
+static void
+print_connection (DBusGConnection *bus, const char *service, const char *path)
+{
+	DBusGProxy *proxy;
+	GError *error = NULL;
+	GHashTable *hash = NULL;
+	NMConnection *connection = NULL;
+
+	/* Create a D-Bus proxy; NM_DBUS_* defined in NetworkManager.h */
+	proxy = dbus_g_proxy_new_for_name (bus,
+	                                   service,
+	                                   path,
+	                                   NM_DBUS_IFACE_SETTINGS_CONNECTION);
+	g_assert (proxy);
+
+	if (!dbus_g_proxy_call (proxy, "GetSettings", &error,
+	                        G_TYPE_INVALID,
+	                        DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, &hash,
+	                        G_TYPE_INVALID)) {
+		g_warning ("Failed to get active connection Connection property: %s",
+		           error->message);
+		g_error_free (error);
+		goto out;
+	}
+
+	connection = nm_connection_new_from_hash (hash, &error);
+	if (!connection) {
+		g_warning ("Received invalid connection data: %s", error->message);
+		g_error_free (error);
+		goto out;
+	}
+
+	g_message ("%s => %s", service, path);
+	nm_connection_dump (connection);
+
+out:
+	if (connection)
+		g_object_unref (connection);
+	if (hash)
+		g_hash_table_destroy (hash);
+	g_object_unref (proxy);
+}
+
+static void
+get_active_connection_details (DBusGConnection *bus, const char *obj_path)
+{
+	DBusGProxy *props_proxy;
+	GValue path_value = { 0 };
+	GValue serv_value = { 0 };
+	GError *error = NULL;
+	const char *path = NULL, *service = NULL;
+
+	/* Create a D-Bus proxy; NM_DBUS_* defined in NetworkManager.h */
+	props_proxy = dbus_g_proxy_new_for_name (bus,
+	                                         NM_DBUS_SERVICE,
+	                                         obj_path,
+	                                         DBUS_INTERFACE_PROPERTIES);
+	g_assert (props_proxy);
+	
+	/* Get the object path of the Connection details */
+	if (!dbus_g_proxy_call (props_proxy, "Get", &error,
+	                        G_TYPE_STRING, NM_DBUS_INTERFACE_ACTIVE_CONNECTION,
+	                        G_TYPE_STRING, "Connection",
+	                        G_TYPE_INVALID,
+	                        G_TYPE_VALUE, &path_value,
+	                        G_TYPE_INVALID)) {
+		g_warning ("Failed to get active connection Connection property: %s",
+		           error->message);
+		g_error_free (error);
+		goto out;
+	}
+
+	if (!G_VALUE_HOLDS (&path_value, DBUS_TYPE_G_OBJECT_PATH)) {
+		g_warning ("Unexpected type returned getting Connection property: %s",
+		           G_VALUE_TYPE_NAME (&path_value));
+		goto out;
+	}
+
+	path = g_value_get_boxed (&path_value);
+	if (!path) {
+		g_warning ("Missing connection path!");
+		goto out;
+	}
+
+	/* Get the service name of the D-Bus service that provides the Connection */
+	if (!dbus_g_proxy_call (props_proxy, "Get", &error,
+	                        G_TYPE_STRING, NM_DBUS_INTERFACE_ACTIVE_CONNECTION,
+	                        G_TYPE_STRING, "ServiceName",
+	                        G_TYPE_INVALID,
+	                        G_TYPE_VALUE, &serv_value,
+	                        G_TYPE_INVALID)) {
+		g_warning ("Failed to get active connection ServiceName property: %s",
+		           error->message);
+		g_error_free (error);
+		goto out;
+	}
+
+	if (!G_VALUE_HOLDS (&serv_value, G_TYPE_STRING)) {
+		g_warning ("Unexpected type returned getting Connection property: %s",
+		           G_VALUE_TYPE_NAME (&serv_value));
+		goto out;
+	}
+
+	service = g_value_get_string (&serv_value);
+	if (!service) {
+		g_warning ("Missing connection service name!");
+		goto out;
+	}
+
+	print_connection (bus, service, path);
+
+out:
+	g_value_unset (&path_value);
+	g_value_unset (&serv_value);
+	g_object_unref (props_proxy);
+}
+
+static void
+get_active_connections (DBusGConnection *bus, DBusGProxy *proxy)
+{
+	GError *error = NULL;
+	GValue value = { 0 };
+	GPtrArray *paths = NULL;
+	int i;
+
+	/* Call AddConnection with the hash as argument */
+	if (!dbus_g_proxy_call (proxy, "Get", &error,
+	                        G_TYPE_STRING, NM_DBUS_INTERFACE,
+	                        G_TYPE_STRING, "ActiveConnections",
+	                        G_TYPE_INVALID,
+	                        G_TYPE_VALUE, &value,
+	                        G_TYPE_INVALID)) {
+		g_warning ("Failed to get ActiveConnections property: %s", error->message);
+		g_error_free (error);
+		return;
+	}
+
+	if (!G_VALUE_HOLDS (&value, DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH)) {
+		g_warning ("Unexpected type returned getting ActiveConnections: %s",
+		           G_VALUE_TYPE_NAME (&value));
+		goto out;
+	}
+
+	paths = g_value_get_boxed (&value);
+	if (!paths) {
+		g_warning ("Could not retrieve active connections property");
+		goto out;
+	}
+
+	for (i = 0; i < paths->len; i++)
+		get_active_connection_details (bus, g_ptr_array_index (paths, i));
+
+out:
+	g_value_unset (&value);
+}
+
+
+int main (int argc, char *argv[])
+{
+	DBusGConnection *bus;
+	DBusGProxy *props_proxy;
+
+	/* Initialize GType system */
+	g_type_init ();
+
+	/* Get system bus */
+	bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, NULL);
+
+	/* Create a D-Bus proxy; NM_DBUS_* defined in NetworkManager.h */
+	props_proxy = dbus_g_proxy_new_for_name (bus,
+	                                         NM_DBUS_SERVICE,
+	                                         NM_DBUS_PATH,
+	                                         DBUS_INTERFACE_PROPERTIES);
+	g_assert (props_proxy);
+
+	/* Add a connection */
+	get_active_connections (bus, props_proxy);
+
+	g_object_unref (props_proxy);
+	dbus_g_connection_unref (bus);
+
+	return 0;
+}