examples: port dbus-glib-based examples to gdbusdanw/gdbus-non-libnm

Port the dbus-glib-based examples to GDBus.

Also, don't use libnm in them at all; there's not much point in
examples that use the D-Bus API directly if they're just going to fall
back to libnm for the hard stuff... (And also, this avoids the problem
that GDBus uses GVariant, while the libnm-core APIs currently still
use GHashTables.)

Also fix up some comment grammar and copyright style, and add emacs
modelines where missing.

Also rename the existing GDBus-based examples to have names ending in
"-gdbus", not "-GDBus", since there's no reason to gratuitously
capitalize here.

14 files changed, 559 insertions, 628 deletions

diff --git a/.gitignore b/.gitignore
index bd177a1f35..fb475a2b72 100644
--- a/.gitignore
+++ b/.gitignore
@@ -116,15 +116,14 @@ valgrind-*.log
 /docs/libnm/libnm.types
 /docs/libnm/version.xml
 
-/examples/C/glib/add-connection-dbus-glib
+/examples/C/glib/add-connection-gdbus
 /examples/C/glib/add-connection-libnm
-/examples/C/glib/get-active-connections-dbus-glib
+/examples/C/glib/get-active-connections-gdbus
 /examples/C/glib/get-ap-info-libnm
-/examples/C/glib/list-connections-dbus-glib
+/examples/C/glib/list-connections-gdbus
 /examples/C/glib/list-connections-libnm
-/examples/C/glib/monitor-nm-running-GDBus
-/examples/C/glib/monitor-nm-running-dbus-glib
-/examples/C/glib/monitor-nm-state-GDBus
+/examples/C/glib/monitor-nm-running-gdbus
+/examples/C/glib/monitor-nm-state-gdbus
 /examples/C/qt/add-connection-wired
 /examples/C/qt/list-connections
 /examples/C/qt/change-ipv4-addresses
diff --git a/examples/C/glib/Makefile.am b/examples/C/glib/Makefile.am
index ffbc98783d..c3e9be0660 100644
--- a/examples/C/glib/Makefile.am
+++ b/examples/C/glib/Makefile.am
@@ -8,21 +8,19 @@ AM_CPPFLAGS = \
 	$(GLIB_CFLAGS)
 
 noinst_PROGRAMS = \
-	add-connection-dbus-glib \
+	add-connection-gdbus \
 	add-connection-libnm \
-	get-active-connections-dbus-glib \
-	list-connections-dbus-glib \
-	list-connections-libnm \
+	get-active-connections-gdbus \
 	get-ap-info-libnm \
-	monitor-nm-running-dbus-glib \
-	monitor-nm-running-GDBus \
-	monitor-nm-state-GDBus
+	list-connections-gdbus \
+	list-connections-libnm \
+	monitor-nm-running-gdbus \
+	monitor-nm-state-gdbus
 
-add_connection_dbus_glib_SOURCES = add-connection-dbus-glib.c
-add_connection_dbus_glib_LDADD = \
-	$(top_builddir)/libnm/libnm.la \
-	$(DBUS_LIBS) \
-	$(GLIB_LIBS)
+add_connection_gdbus_SOURCES = add-connection-gdbus.c
+add_connection_gdbus_LDADD = \
+	$(GLIB_LIBS) \
+	$(UUID_LIBS)
 
 add_connection_libnm_SOURCES = add-connection-libnm.c
 add_connection_libnm_LDADD = \
@@ -30,51 +28,30 @@ add_connection_libnm_LDADD = \
 	$(DBUS_LIBS) \
 	$(GLIB_LIBS)
 
-get_active_connections_dbus_glib_SOURCES = get-active-connections-dbus-glib.c
-get_active_connections_dbus_glib_LDADD = \
-	$(top_builddir)/libnm/libnm.la \
-	$(DBUS_LIBS) \
+get_active_connections_gdbus_SOURCES = get-active-connections-gdbus.c
+get_active_connections_gdbus_LDADD = \
 	$(GLIB_LIBS)
 
-list_connections_dbus_glib_SOURCES = list-connections-dbus-glib.c
-list_connections_dbus_glib_LDADD = \
+get_ap_info_libnm_SOURCES = get-ap-info-libnm.c
+get_ap_info_libnm_LDADD = \
 	$(top_builddir)/libnm/libnm.la \
 	$(DBUS_LIBS) \
 	$(GLIB_LIBS)
 
-list_connections_libnm_SOURCES = list-connections-libnm.c
-list_connections_libnm_LDADD = \
-	$(top_builddir)/libnm/libnm.la \
-	$(DBUS_LIBS) \
+list_connections_gdbus_SOURCES = list-connections-gdbus.c
+list_connections_gdbus_LDADD = \
 	$(GLIB_LIBS)
 
-get_ap_info_libnm_SOURCES = get-ap-info-libnm.c
-get_ap_info_libnm_LDADD = \
+list_connections_libnm_SOURCES = list-connections-libnm.c
+list_connections_libnm_LDADD = \
 	$(top_builddir)/libnm/libnm.la \
 	$(DBUS_LIBS) \
 	$(GLIB_LIBS)
 
-monitor_nm_running_dbus_glib_SOURCES = monitor-nm-running-dbus-glib.c
-monitor_nm_running_dbus_glib_LDADD = \
-	$(DBUS_LIBS) \
-	$(GLIB_LIBS)
-
-monitor_nm_running_GDBus_SOURCES = monitor-nm-running-GDBus.c
-monitor_nm_running_GDBus_LDADD = \
+monitor_nm_running_gdbus_SOURCES = monitor-nm-running-gdbus.c
+monitor_nm_running_gdbus_LDADD = \
 	$(GLIB_LIBS)
 
-monitor_nm_state_GDBus_SOURCES = monitor-nm-state-GDBus.c
-monitor_nm_state_GDBus_LDADD = \
+monitor_nm_state_gdbus_SOURCES = monitor-nm-state-gdbus.c
+monitor_nm_state_gdbus_LDADD = \
 	$(GLIB_LIBS)
-
-EXTRA_DIST = \
-	add-connection-dbus-glib.c \
-	add-connection-libnm.c \
-	get-active-connections-dbus-glib.c \
-	list-connections-dbus-glib.c \
-	list-connections-libnm.c \
-	get-ap-info-libnm.c \
-	monitor-nm-running-dbus-glib.c \
-	monitor-nm-running-GDBus.c \
-	monitor-nm-state-GDBus.c
-
diff --git a/examples/C/glib/add-connection-dbus-glib.c b/examples/C/glib/add-connection-dbus-glib.c
deleted file mode 100644
index d4ac7be096..0000000000
--- a/examples/C/glib/add-connection-dbus-glib.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/* -*- 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 2011 Red Hat, Inc.
- */
-
-/*
- * The example shows how to call AddConnection() D-Bus method to add
- * a connection to system settings service. It uses dbus-glib and libnm
- * libraries.
- *
- * Compile with:
- *   gcc -Wall `pkg-config --libs --cflags glib-2.0 dbus-glib-1 libnm` add-connection-glib.c -o add-connection-glib
- */
-
-#include <glib.h>
-#include <dbus/dbus-glib.h>
-
-#include <NetworkManager.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))
-
-static void
-add_connection (DBusGProxy *proxy, const char *con_name)
-{
-	NMConnection *connection;
-	NMSettingConnection *s_con;
-	NMSettingWired *s_wired;
-	NMSettingIP4Config *s_ip4;
-	char *uuid, *new_con_path = NULL;
-	GHashTable *hash;
-	GError *error = NULL;
-
-	/* Create a new connection object */
-	connection = (NMConnection *) nm_simple_connection_new ();
-
-	/* Build up the 'connection' Setting */
-	s_con = (NMSettingConnection *) nm_setting_connection_new ();
-	uuid = nm_utils_uuid_generate ();
-	g_object_set (G_OBJECT (s_con),
-	              NM_SETTING_CONNECTION_UUID, uuid,
-	              NM_SETTING_CONNECTION_ID, con_name,
-	              NM_SETTING_CONNECTION_TYPE, "802-3-ethernet",
-	              NULL);
-	g_free (uuid);
-	nm_connection_add_setting (connection, NM_SETTING (s_con));
-
-	/* Build up the 'wired' Setting */
-	s_wired = (NMSettingWired *) nm_setting_wired_new ();
-	nm_connection_add_setting (connection, NM_SETTING (s_wired));
-
-	/* Build up the 'ipv4' Setting */
-	s_ip4 = (NMSettingIP4Config *) nm_setting_ip4_config_new ();
-	g_object_set (G_OBJECT (s_ip4),
-	              NM_SETTING_IP4_CONFIG_METHOD, NM_SETTING_IP4_CONFIG_METHOD_AUTO,
-	              NULL);
-	nm_connection_add_setting (connection, NM_SETTING (s_ip4));
-
-	hash = nm_connection_to_dbus (connection, NM_CONNECTION_SERIALIZE_ALL);
-
-	/* Call AddConnection with the hash as argument */
-	if (!dbus_g_proxy_call (proxy, "AddConnection", &error,
-	                        DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, hash,
-	                        G_TYPE_INVALID,
-	                        DBUS_TYPE_G_OBJECT_PATH, &new_con_path,
-	                        G_TYPE_INVALID)) {
-		g_print ("Error adding connection: %s %s",
-		         dbus_g_error_get_name (error),
-		         error->message);
-		g_clear_error (&error);
-	} else {
-		g_print ("Added: %s\n", new_con_path);
-		g_free (new_con_path);
-	}
-
-	g_hash_table_destroy (hash);
-	g_object_unref (connection);
-}
-
-
-int main (int argc, char *argv[])
-{
-	DBusGConnection *bus;
-	DBusGProxy *proxy;
-
-#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);
-
-	/* Create a D-Bus proxy; NM_DBUS_* defined in nm-dbus-interface.h */
-	proxy = dbus_g_proxy_new_for_name (bus,
-	                                   NM_DBUS_SERVICE,
-	                                   NM_DBUS_PATH_SETTINGS,
-	                                   NM_DBUS_INTERFACE_SETTINGS);
-
-	/* Add a connection */
-	add_connection (proxy, "__Test connection__");
-
-	g_object_unref (proxy);
-	dbus_g_connection_unref (bus);
-
-	return 0;
-}
diff --git a/examples/C/glib/add-connection-gdbus.c b/examples/C/glib/add-connection-gdbus.c
new file mode 100644
index 0000000000..a7874fc51f
--- /dev/null
+++ b/examples/C/glib/add-connection-gdbus.c
@@ -0,0 +1,148 @@
+/* -*- 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.
+ *
+ * Copyright 2011, 2014 Red Hat, Inc.
+ */
+
+/*
+ * The example shows how to call the AddConnection() D-Bus method to add a
+ * connection to the system settings service. It uses GDBus, plus a few defines
+ * from the NetworkManager headers. Contrast add-connection-libnm, which is
+ * higher level because it uses libnm.
+ *
+ * Compile with:
+ *   gcc -Wall `pkg-config --cflags libnm` `pkg-config --cflags --libs gio-2.0` -luuid add-connection-gdbus.c -o add-connection-gdbus
+ */
+
+#include <gio/gio.h>
+#include <uuid/uuid.h>
+#include <NetworkManager.h>
+
+/* copied from libnm-core/nm-utils.c */
+char *
+nm_utils_uuid_generate (void)
+{
+	uuid_t uuid;
+	char *buf;
+
+	buf = g_malloc0 (37);
+	uuid_generate_random (uuid);
+	uuid_unparse_lower (uuid, &buf[0]);
+	return buf;
+}
+
+static void
+add_connection (GDBusProxy *proxy, const char *con_name)
+{
+	GVariantBuilder connection_builder;
+	GVariantBuilder setting_builder;
+	char *uuid;
+	const char *new_con_path;
+	GVariant *ret;
+	GError *error = NULL;
+
+	/* Initialize connection GVariantBuilder */
+	g_variant_builder_init (&connection_builder, G_VARIANT_TYPE ("a{sa{sv}}"));
+
+	/* Build up the 'connection' Setting */
+	g_variant_builder_init (&setting_builder, G_VARIANT_TYPE ("a{sv}"));
+
+	uuid = nm_utils_uuid_generate ();
+	g_variant_builder_add (&setting_builder, "{sv}",
+	                       NM_SETTING_CONNECTION_UUID,
+	                       g_variant_new_string (uuid));
+	g_free (uuid);
+
+	g_variant_builder_add (&setting_builder, "{sv}",
+	                       NM_SETTING_CONNECTION_ID,
+	                       g_variant_new_string (con_name));
+	g_variant_builder_add (&setting_builder, "{sv}",
+	                       NM_SETTING_CONNECTION_TYPE,
+	                       g_variant_new_string (NM_SETTING_WIRED_SETTING_NAME));
+
+	g_variant_builder_add (&connection_builder, "{sa{sv}}",
+	                       NM_SETTING_CONNECTION_SETTING_NAME,
+	                       &setting_builder);
+
+	/* Add the (empty) 'wired' Setting */
+	g_variant_builder_init (&setting_builder, G_VARIANT_TYPE ("a{sv}"));
+	g_variant_builder_add (&connection_builder, "{sa{sv}}",
+	                       NM_SETTING_WIRED_SETTING_NAME,
+	                       &setting_builder);
+
+	/* Build up the 'ipv4' Setting */
+	g_variant_builder_init (&setting_builder, G_VARIANT_TYPE ("a{sv}"));
+	g_variant_builder_add (&setting_builder, "{sv}",
+	                       NM_SETTING_IP4_CONFIG_METHOD,
+	                       g_variant_new_string (NM_SETTING_IP4_CONFIG_METHOD_AUTO));
+	g_variant_builder_add (&connection_builder, "{sa{sv}}",
+	                       NM_SETTING_IP4_CONFIG_SETTING_NAME,
+	                       &setting_builder);
+
+	/* Call AddConnection with the connection dictionary as argument.
+	 * (g_variant_new() will consume the floating GVariant returned from
+	 * &connection_builder, and g_dbus_proxy_call_sync() will consume the
+	 * floating variant returned from g_variant_new(), so no cleanup is needed.
+	 */
+	ret = g_dbus_proxy_call_sync (proxy,
+	                              "AddConnection",
+	                              g_variant_new ("(a{sa{sv}})", &connection_builder),
+	                              G_DBUS_CALL_FLAGS_NONE, -1,
+	                              NULL, &error);
+	if (ret) {
+		g_variant_get (ret, "(&o)", &new_con_path);
+		g_print ("Added: %s\n", new_con_path);
+		g_variant_unref (ret);
+	} else {
+		g_dbus_error_strip_remote_error (error);
+		g_print ("Error adding connection: %s\n", error->message);
+		g_clear_error (&error);
+	}
+}
+
+int
+main (int argc, char *argv[])
+{
+	GDBusProxy *proxy;
+	GError *error = NULL;
+
+#if !GLIB_CHECK_VERSION (2, 35, 0)
+	/* Initialize GType system */
+	g_type_init ();
+#endif
+
+	/* Create a D-Bus proxy; NM_DBUS_* defined in nm-dbus-interface.h */
+	proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+	                                       G_DBUS_PROXY_FLAGS_NONE,
+	                                       NULL,
+	                                       NM_DBUS_SERVICE,
+	                                       NM_DBUS_PATH_SETTINGS,
+	                                       NM_DBUS_INTERFACE_SETTINGS,
+	                                       NULL, &error);
+	if (!proxy) {
+		g_dbus_error_strip_remote_error (error);
+		g_print ("Could not create NetworkManager D-Bus proxy: %s\n", error->message);
+		g_error_free (error);
+		return 1;
+	}
+
+	/* Add a connection */
+	add_connection (proxy, "__Test connection__");
+
+	g_object_unref (proxy);
+
+	return 0;
+}
diff --git a/examples/C/glib/add-connection-libnm.c b/examples/C/glib/add-connection-libnm.c
index f390bfa159..2b0143d35a 100644
--- a/examples/C/glib/add-connection-libnm.c
+++ b/examples/C/glib/add-connection-libnm.c
@@ -14,14 +14,14 @@
  * 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.
+ * Copyright 2011 Red Hat, Inc.
  */
 
 /*
- * The example shows how to add a new connection using libnm.
- * Contrast this example with add-connection-dbus-glib.c, which is a bit lower
- * level and talks directly to NM using dbus-glib.  This example is simpler
- * because libnm handles much of the low-level stuff for you.
+ * The example shows how to add a new connection using libnm.  Contrast this
+ * example with add-connection-gdbus.c, which is a bit lower level and talks
+ * directly to NM using GDBus.  This example is simpler because libnm handles
+ * much of the low-level stuff for you.
  *
  * Compile with:
  *   gcc -Wall `pkg-config --libs --cflags glib-2.0 libnm` add-connection-libnm.c -o add-connection-libnm
@@ -98,7 +98,8 @@ add_connection (NMRemoteSettings *settings, GMainLoop *loop, const char *con_nam
 }
 
 
-int main (int argc, char *argv[])
+int
+main (int argc, char *argv[])
 {
 	NMRemoteSettings *settings;
 	GMainLoop *loop;
diff --git a/examples/C/glib/get-active-connections-dbus-glib.c b/examples/C/glib/get-active-connections-dbus-glib.c
deleted file mode 100644
index e7aaff7bb3..0000000000
--- a/examples/C/glib/get-active-connections-dbus-glib.c
+++ /dev/null
@@ -1,218 +0,0 @@
-/* -*- 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 -2014 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 libraries.
- *
- * Compile with:
- *   gcc -Wall `pkg-config --libs --cflags glib-2.0 dbus-glib-1 libnm` get-active-connections-dbus-glib.c -o get-active-connections-dbus-glib
- */
-
-#include <stdio.h>
-#include <glib.h>
-#include <dbus/dbus-glib.h>
-
-#include <NetworkManager.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 *path)
-{
-	DBusGProxy *proxy;
-	GError *error = NULL;
-	GHashTable *hash = NULL;
-	NMConnection *connection = NULL;
-
-	/* This function asks NetworkManager for the details of the connection */
-
-	/* Create the D-Bus proxy so we can ask it for the connection configuration details. */
-	proxy = dbus_g_proxy_new_for_name (bus,
-	                                   NM_DBUS_SERVICE,
-	                                   path,
-	                                   NM_DBUS_INTERFACE_SETTINGS_CONNECTION);
-	g_assert (proxy);
-
-	/* Request the all the configuration of the Connection */
-	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;
-	}
-
-	/* Using the raw configuration, create an NMConnection object for it. This
-	 * step also verifies that the data we got from NetworkManager are valid. */
-	connection = nm_simple_connection_new_from_dbus (hash, &error);
-	if (!connection) {
-		g_warning ("Received invalid connection data: %s", error->message);
-		g_error_free (error);
-		goto out;
-	}
-
-	/* And finally dump all the configuration to stdout */
-	printf ("%s <=> %s\n", nm_connection_get_id (connection), 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 = G_VALUE_INIT;
-	GError *error = NULL;
-	const char *path = NULL;
-
-	/* This function gets the backing Connection object that describes the
-	 * network configuration that the ActiveConnection object is actually using.
-	 * The ActiveConnection object contains the mapping between the configuration
-	 * and the actual network interfaces that are using that configuration.
-	 */
-
-	/* Create a D-Bus object proxy for the active connection object's properties */
-	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;
-	}
-
-	/* Print out the actual connection details */
-	print_connection (bus, path);
-
-out:
-	g_value_unset (&path_value);
-	g_object_unref (props_proxy);
-}
-
-static void
-get_active_connections (DBusGConnection *bus, DBusGProxy *proxy)
-{
-	GError *error = NULL;
-	GValue value = G_VALUE_INIT;
-	GPtrArray *paths = NULL;
-	const char *a_path;
-	int i;
-
-	/* Get the ActiveConnections property from the NM Manager object */
-	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;
-	}
-
-	/* Make sure the ActiveConnections property is the type we expect it to be */
-	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;
-	}
-
-	/* Extract the active connections array from the GValue */
-	paths = g_value_get_boxed (&value);
-	if (!paths) {
-		g_warning ("Could not retrieve active connections property");
-		goto out;
-	}
-
-	/* And print out the details for each active connection */
-	for (i = 0; i < paths->len; i++) {
-		a_path = g_ptr_array_index (paths, i);
-		printf ("Active connection path: %s\n", a_path);
-		get_active_connection_details (bus, a_path);
-	}
-
-out:
-	g_value_unset (&value);
-}
-
-
-int main (int argc, char *argv[])
-{
-	DBusGConnection *bus;
-	DBusGProxy *props_proxy;
-
-#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);
-
-	/* Create a D-Bus proxy to get the object properties from the NM Manager
-	 * object.  NM_DBUS_* defines are from nm-dbus-interface.h.
-	 */
-	props_proxy = dbus_g_proxy_new_for_name (bus,
-	                                         NM_DBUS_SERVICE,
-	                                         NM_DBUS_PATH,
-	                                         DBUS_INTERFACE_PROPERTIES);
-	g_assert (props_proxy);
-
-	/* Get active connections */
-	get_active_connections (bus, props_proxy);
-
-	g_object_unref (props_proxy);
-	dbus_g_connection_unref (bus);
-
-	return 0;
-}
diff --git a/examples/C/glib/get-active-connections-gdbus.c b/examples/C/glib/get-active-connections-gdbus.c
new file mode 100644
index 0000000000..6a19bf895e
--- /dev/null
+++ b/examples/C/glib/get-active-connections-gdbus.c
@@ -0,0 +1,272 @@
+/* -*- 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 -2014 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 GDBus, plus
+ * a few defines from the NetworkManager headers.
+ *
+ * Compile with:
+ *   gcc -Wall `pkg-config --cflags libnm` `pkg-config --cflags --libs gio-2.0` get-active-connections-gdbus.c -o get-active-connections-gdbus
+ */
+
+#include <string.h>
+#include <gio/gio.h>
+#include <NetworkManager.h>
+
+static void
+print_setting (const char *setting_name, GVariant *setting)
+{
+	GVariantIter iter;
+	const char *property_name;
+	GVariant *value;
+	char *printed_value;
+
+	g_print ("  %s:\n", setting_name);
+	g_variant_iter_init (&iter, setting);
+	while (g_variant_iter_next (&iter, "{&sv}", &property_name, &value)) {
+		printed_value = g_variant_print (value, FALSE);
+		if (strcmp (printed_value, "[]") != 0)
+			g_print ("    %s: %s\n", property_name, printed_value);
+		g_free (printed_value);
+		g_variant_unref (value);
+	}
+}
+
+static void
+print_connection (const char *path)
+{
+	GDBusProxy *proxy;
+	GError *error = NULL;
+	GVariant *ret, *connection = NULL, *s_con = NULL;
+	const char *id, *type;
+	gboolean found;
+	GVariantIter iter;
+	const char *setting_name;
+	GVariant *setting;
+
+	/* This function asks NetworkManager for the details of the connection */
+
+	/* Create the D-Bus proxy so we can ask it for the connection configuration details. */
+	proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+	                                       G_DBUS_PROXY_FLAGS_NONE,
+	                                       NULL,
+	                                       NM_DBUS_SERVICE,
+	                                       path,
+	                                       NM_DBUS_INTERFACE_SETTINGS_CONNECTION,
+	                                       NULL, NULL);
+	g_assert (proxy);
+
+	/* Request the all the configuration of the Connection */
+	ret = g_dbus_proxy_call_sync (proxy,
+	                              "GetSettings",
+	                              NULL,
+	                              G_DBUS_CALL_FLAGS_NONE, -1,
+	                              NULL, &error);
+	if (!ret) {
+		g_dbus_error_strip_remote_error (error);
+		g_warning ("Failed to get connection settings: %s\n", error->message);
+		g_error_free (error);
+		goto out;
+	}
+
+	g_variant_get (ret, "(@a{sa{sv}})", &connection);
+
+	s_con = g_variant_lookup_value (connection, NM_SETTING_CONNECTION_SETTING_NAME, NULL);
+	g_assert (s_con != NULL);
+	found = g_variant_lookup (s_con, NM_SETTING_CONNECTION_ID, "&s", &id);
+	g_assert (found);
+	found = g_variant_lookup (s_con, NM_SETTING_CONNECTION_TYPE, "&s", &type);
+	g_assert (found);
+
+	/* Dump the configuration to stdout */
+	g_print ("%s <=> %s\n", id, path);
+
+	/* Connection setting first */
+	print_setting (NM_SETTING_CONNECTION_SETTING_NAME, s_con);
+
+	/* Then the type-specific setting */
+	setting = g_variant_lookup_value (connection, type, NULL);
+	if (setting) {
+		print_setting (type, setting);
+		g_variant_unref (setting);
+	}
+
+	g_variant_iter_init (&iter, connection);
+	while (g_variant_iter_next (&iter, "{&s@a{sv}}", &setting_name, &setting)) {
+		if (   strcmp (setting_name, NM_SETTING_CONNECTION_SETTING_NAME) != 0
+		    && strcmp (setting_name, type) != 0)
+			print_setting (setting_name, setting);
+		g_variant_unref (setting);
+	}
+	g_print ("\n");
+
+out:
+	if (s_con)
+		g_variant_unref (s_con);
+	if (connection)
+		g_variant_unref (connection);
+	if (ret)
+		g_variant_unref (ret);
+	g_object_unref (proxy);
+}
+
+static void
+get_active_connection_details (const char *obj_path)
+{
+	GDBusProxy *props_proxy;
+	GVariant *ret = NULL, *path_value = NULL;
+	const char *path = NULL;
+	GError *error = NULL;
+
+	/* This function gets the backing Connection object that describes the
+	 * network configuration that the ActiveConnection object is actually using.
+	 * The ActiveConnection object contains the mapping between the configuration
+	 * and the actual network interfaces that are using that configuration.
+	 */
+
+	/* Create a D-Bus object proxy for the active connection object's properties */
+	props_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+	                                             G_DBUS_PROXY_FLAGS_NONE,
+	                                             NULL,
+	                                             NM_DBUS_SERVICE,
+	                                             obj_path,
+	                                             "org.freedesktop.DBus.Properties",
+	                                             NULL, NULL);
+	g_assert (props_proxy);
+
+	/* Get the object path of the Connection details */
+	ret = g_dbus_proxy_call_sync (props_proxy,
+	                              "Get",
+	                              g_variant_new ("(ss)",
+	                                             NM_DBUS_INTERFACE_ACTIVE_CONNECTION,
+	                                             "Connection"),
+	                              G_DBUS_CALL_FLAGS_NONE, -1,
+	                              NULL, &error);
+	if (!ret) {
+		g_dbus_error_strip_remote_error (error);
+		g_warning ("Failed to get active connection Connection property: %s\n",
+		           error->message);
+		g_error_free (error);
+		goto out;
+	}
+
+	g_variant_get (ret, "(v)", &path_value);
+	if (!g_variant_is_of_type (path_value, G_VARIANT_TYPE_OBJECT_PATH)) {
+		g_warning ("Unexpected type returned getting Connection property: %s",
+		           g_variant_get_type_string (path_value));
+		goto out;
+	}
+
+	path = g_variant_get_string (path_value, NULL);
+
+	/* Print out the actual connection details */
+	print_connection (path);
+
+out:
+	if (path_value)
+		g_variant_unref (path_value);
+	if (ret)
+		g_variant_unref (ret);
+	g_object_unref (props_proxy);
+}
+
+static void
+get_active_connections (GDBusProxy *proxy)
+{
+	GError *error = NULL;
+	GVariant *ret = NULL, *value = NULL;
+	char **paths;
+	int i;
+
+	/* Get the ActiveConnections property from the NM Manager object */
+	ret = g_dbus_proxy_call_sync (proxy,
+	                              "Get",
+	                              g_variant_new ("(ss)",
+	                                             NM_DBUS_INTERFACE,
+	                                             "ActiveConnections"),
+	                              G_DBUS_CALL_FLAGS_NONE, -1,
+	                              NULL, &error);
+	if (!ret) {
+		g_dbus_error_strip_remote_error (error);
+		g_warning ("Failed to get ActiveConnections property: %s\n", error->message);
+		g_error_free (error);
+		return;
+	}
+
+	g_variant_get (ret, "(v)", &value);
+
+	/* Make sure the ActiveConnections property is the type we expect it to be */
+	if (!g_variant_is_of_type (value, G_VARIANT_TYPE ("ao"))) {
+		g_warning ("Unexpected type returned getting ActiveConnections: %s",
+		           g_variant_get_type_string (value));
+		goto out;
+	}
+
+	/* Extract the active connections array from the GValue */
+	paths = g_variant_dup_objv (value, NULL);
+	if (!paths) {
+		g_warning ("Could not retrieve active connections property");
+		goto out;
+	}
+
+	/* And print out the details for each active connection */
+	for (i = 0; paths[i]; i++) {
+		g_print ("Active connection path: %s\n", paths[i]);
+		get_active_connection_details (paths[i]);
+	}
+	g_strfreev (paths);
+
+out:
+	if (value)
+		g_variant_unref (value);
+	if (ret)
+		g_variant_unref (ret);
+}
+
+
+int
+main (int argc, char *argv[])
+{
+	GDBusProxy *props_proxy;
+
+#if !GLIB_CHECK_VERSION (2, 35, 0)
+	/* Initialize GType system */
+	g_type_init ();
+#endif
+
+	/* Create a D-Bus proxy to get the object properties from the NM Manager
+	 * object.  NM_DBUS_* defines are from nm-dbus-interface.h.
+	 */
+	props_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+	                                             G_DBUS_PROXY_FLAGS_NONE,
+	                                             NULL,
+	                                             NM_DBUS_SERVICE,
+	                                             NM_DBUS_PATH,
+	                                             "org.freedesktop.DBus.Properties",
+	                                             NULL, NULL);
+	g_assert (props_proxy);
+
+	/* Get active connections */
+	get_active_connections (props_proxy);
+
+	g_object_unref (props_proxy);
+
+	return 0;
+}
diff --git a/examples/C/glib/get-ap-info-libnm.c b/examples/C/glib/get-ap-info-libnm.c
index 044cec9c04..efb70bf4b8 100644
--- a/examples/C/glib/get-ap-info-libnm.c
+++ b/examples/C/glib/get-ap-info-libnm.c
@@ -1,3 +1,4 @@
+/* -*- 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
@@ -13,19 +14,18 @@
  * 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.
+ * Copyright 2010 Red Hat, Inc.
  */
 
 /*
- * The example shows how to get info about APs visible by Wi-Fi devices 
- * using libnm (that wraps direct D-Bus calls).
+ * The example shows how to get info about APs visible by Wi-Fi devices using
+ * libnm.
  *
  * Compile with:
  *   gcc -Wall `pkg-config --libs --cflags glib-2.0 libnm` get-ap-info-libnm.c -o get-ap-info-libnm
  */
 
 #include <glib.h>
-#include <dbus/dbus-glib.h>
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -188,7 +188,8 @@ show_wifi_device_info (NMDevice *device)
 	}
 }
 
-int main (int argc, char *argv[])
+int
+main (int argc, char *argv[])
 {
 	NMClient *client;
 	const GPtrArray *devices;
diff --git a/examples/C/glib/list-connections-dbus-glib.c b/examples/C/glib/list-connections-dbus-glib.c
deleted file mode 100644
index 608c666603..0000000000
--- a/examples/C/glib/list-connections-dbus-glib.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * 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 direct
- * D-Bus call of ListConnections method.
- * The example uses dbus-glib libraries and libnm headers.
- *
- * Compile with:
- *   gcc -Wall `pkg-config --libs --cflags glib-2.0 dbus-glib-1` `pkg-config --cflags libnm` list-connections-dbus.c -o list-connections-dbus
- */
-
-#include <glib.h>
-#include <dbus/dbus-glib.h>
-#include <stdio.h>
-
-#include <NetworkManager.h>
-
-#define DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH    (dbus_g_type_get_collection ("GPtrArray", DBUS_TYPE_G_OBJECT_PATH))
-
-static void
-list_connections (DBusGProxy *proxy)
-{
-	int i;
-	GError *error = NULL;
-	GPtrArray *con_array;
-	gboolean success;
-
-	/* Call ListConnections D-Bus method */
-	success = dbus_g_proxy_call (proxy, "ListConnections", &error,
-	                             /* No input arguments */
-	                             G_TYPE_INVALID,
-	                             DBUS_TYPE_G_ARRAY_OF_OBJECT_PATH, &con_array, /* Return values */
-	                             G_TYPE_INVALID);
-	if (!success) {
-		printf ("ListConnections failed: %s", error->message);
-		g_error_free (error);
-		return;
-	}
-
-	for (i = 0; con_array && i < con_array->len; i++) {
-		char *connection_path = g_ptr_array_index (con_array, i);
-		printf ("%s\n", connection_path);
-		g_free (connection_path);
-	}
-	g_ptr_array_free (con_array, TRUE);
-}
-
-int main (int argc, char *argv[])
-{
-	DBusGConnection *bus;
-	DBusGProxy *proxy;
-
-#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);
-
-	/* Create a D-Bus proxy; NM_DBUS_* defined in nm-dbus-interface.h */
-	proxy = dbus_g_proxy_new_for_name (bus,
-	                                   NM_DBUS_SERVICE,
-	                                   NM_DBUS_PATH_SETTINGS,
-	                                   NM_DBUS_INTERFACE_SETTINGS);
-
-	/* List connections of system settings service */
-	list_connections (proxy);
-
-	g_object_unref (proxy);
-	dbus_g_connection_unref (bus);
-
-	return 0;
-}
diff --git a/examples/C/glib/list-connections-gdbus.c b/examples/C/glib/list-connections-gdbus.c
new file mode 100644
index 0000000000..f5922582ea
--- /dev/null
+++ b/examples/C/glib/list-connections-gdbus.c
@@ -0,0 +1,88 @@
+/* -*- 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.
+ *
+ * Copyright 2011, 2014 Red Hat, Inc.
+ */
+
+/*
+ * The example shows how to list connections from the System Settings service
+ * using direct D-Bus calls.  The example uses GDBus, plus a few defines from
+ * the NetworkManager headers.  Contrast list-connections-libnm, which is higher
+ * level because it uses libnm.
+ *
+ * Compile with:
+ *   gcc -Wall `pkg-config --cflags libnm` `pkg-config --cflags --libs gio-2.0` list-connections-gdbus.c -o list-connections-gdbus
+ */
+
+#include <gio/gio.h>
+#include <NetworkManager.h>
+
+static void
+list_connections (GDBusProxy *proxy)
+{
+	int i;
+	GError *error = NULL;
+	GVariant *ret;
+	char **paths;
+
+	/* Call ListConnections D-Bus method */
+	ret = g_dbus_proxy_call_sync (proxy,
+	                              "ListConnections",
+	                              NULL,
+	                              G_DBUS_CALL_FLAGS_NONE, -1,
+	                              NULL, &error);
+	if (!ret) {
+		g_dbus_error_strip_remote_error (error);
+		g_print ("ListConnections failed: %s\n", error->message);
+		g_error_free (error);
+		return;
+	}
+
+	g_variant_get (ret, "(^ao)", &paths);
+	g_variant_unref (ret);
+
+	for (i = 0; paths[i]; i++)
+		g_print ("%s\n", paths[i]);
+	g_strfreev (paths);
+}
+
+int
+main (int argc, char *argv[])
+{
+	GDBusProxy *proxy;
+
+#if !GLIB_CHECK_VERSION (2, 35, 0)
+	/* Initialize GType system */
+	g_type_init ();
+#endif
+
+	/* Create a D-Bus proxy; NM_DBUS_* defined in nm-dbus-interface.h */
+	proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+	                                       G_DBUS_PROXY_FLAGS_NONE,
+	                                       NULL,
+	                                       NM_DBUS_SERVICE,
+	                                       NM_DBUS_PATH_SETTINGS,
+	                                       NM_DBUS_INTERFACE_SETTINGS,
+	                                       NULL, NULL);
+	g_assert (proxy != NULL);
+
+	/* List connections of system settings service */
+	list_connections (proxy);
+
+	g_object_unref (proxy);
+
+	return 0;
+}
diff --git a/examples/C/glib/list-connections-libnm.c b/examples/C/glib/list-connections-libnm.c
index 1827835948..bebeeb8a23 100644
--- a/examples/C/glib/list-connections-libnm.c
+++ b/examples/C/glib/list-connections-libnm.c
@@ -1,3 +1,4 @@
+/* -*- 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
@@ -13,12 +14,13 @@
  * 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.
+ * Copyright 2011 Red Hat, Inc.
  */
 
 /*
- * The example shows how to list connections from System Settings service using libnm
- * (that wraps direct D-Bus calls).
+ * The example shows how to list connections from the System Settings service
+ * using libnm.  Contrast this example with list-connections-gdbus.c, which is a
+ * bit lower level and talks directly to NM using GDBus.
  *
  * Compile with:
  *   gcc -Wall `pkg-config --libs --cflags glib-2.0 libnm` list-connections-libnm.c -o list-connections-libnm
diff --git a/examples/C/glib/monitor-nm-running-dbus-glib.c b/examples/C/glib/monitor-nm-running-dbus-glib.c
deleted file mode 100644
index 0b01a57f06..0000000000
--- a/examples/C/glib/monitor-nm-running-dbus-glib.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
-/* vim: set ft=c ts=4 sts=4 sw=4 noexpandtab smartindent: */
-/*
- * 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 2012 Red Hat, Inc.
- */
-
-/*
- * This example monitors whether NM is running by checking D-Bus
- * NameOwnerChanged signal.
- * It uses dbus-glib library.
- *
- * Standalone compilation:
- *   gcc -Wall `pkg-config --libs --cflags glib-2.0 dbus-glib-1` monitor-nm-running.c -o monitor-nm-running
- */
-
-#include <glib.h>
-#include <dbus/dbus-glib.h>
-#include <dbus/dbus-glib-bindings.h>
-#include <string.h>
-
-#define NM_DBUS_SERVICE "org.freedesktop.NetworkManager"
-
-static void
-proxy_name_owner_changed (DBusGProxy *proxy,
-                          const char *name,
-                          const char *old_owner,
-                          const char *new_owner,
-                          gpointer user_data)
-{
-	gboolean *nm_running = (gboolean *) user_data;
-	gboolean old_good = (old_owner && strlen (old_owner));
-	gboolean new_good = (new_owner && strlen (new_owner));
-	gboolean new_running = FALSE;
-
-	/* We are only interested in NetworkManager */
-	if (!name || strcmp (name, NM_DBUS_SERVICE) != 0)
-		return;
-
-	if (!old_good && new_good)
-		new_running = TRUE;
-	else if (old_good && !new_good)
-		new_running = FALSE;
-
-	*nm_running = new_running;
-
-	g_print ("name: '%s', old_owner: '%s', new_owner: '%s'", name, old_owner, new_owner);
-	g_print (" => NM is %s\n", *nm_running ? "running" : "not running");
-}
-
-
-int
-main (int argc, char *argv[])
-{
-	DBusGConnection *bus;
-	DBusGProxy *bus_proxy;
-	GMainLoop *loop = NULL;
-	GError *err = NULL;
-	gboolean nm_running;
-
-#if !GLIB_CHECK_VERSION (2, 35, 0)
-	/* Initialize GType system */
-	g_type_init ();
-#endif
-
-	g_print ("Monitor 'org.freedesktop.NetworkManager' D-Bus name\n");
-	g_print ("===================================================\n");
-
-	/* Get system bus */
-	bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, NULL);
-
-	/* Create a D-Bus proxy to D-Bus daemon */
-	bus_proxy = dbus_g_proxy_new_for_name (bus,
-	                                       "org.freedesktop.DBus",
-	                                       "/org/freedesktop/DBus",
-	                                       "org.freedesktop.DBus");
-
-	if (!bus_proxy) {
-		g_message ("Error: Couldn't create D-Bus object proxy for org.freedesktop.DBus.");
-		dbus_g_connection_unref (bus);
-		return -1;
-	}
-
-	/* Call NameHasOwner method to find out if NM is running. When NM runs it claims
-	 * 'org.freedesktop.NetworkManager' service name on D-Bus */
-	if (!org_freedesktop_DBus_name_has_owner (bus_proxy, NM_DBUS_SERVICE, &nm_running, &err)) {
-		g_message ("Error: NameHasOwner request failed: %s",
-		                 (err && err->message) ? err->message : "(unknown)");
-		g_clear_error (&err);
-		g_object_unref (bus_proxy);
-		dbus_g_connection_unref (bus);
-		return -1;
-	}
-	g_print ("NM is %s\n", nm_running ? "running" : "not running");
-
-
-	/* Connect to NameOwnerChanged signal to monitor NM running state */
-	dbus_g_proxy_add_signal (bus_proxy, "NameOwnerChanged",
-	                         G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING,
-	                         G_TYPE_INVALID);
-	dbus_g_proxy_connect_signal (bus_proxy,
-	                             "NameOwnerChanged",
-	                             G_CALLBACK (proxy_name_owner_changed),
-	                             &nm_running, NULL);
-
-	loop = g_main_loop_new (NULL, FALSE);  /* Create main loop */
-	g_main_loop_run (loop);                /* Run main loop */
-
-	g_object_unref (bus_proxy);
-	dbus_g_connection_unref (bus);
-
-	return 0;
-}
-
diff --git a/examples/C/glib/monitor-nm-running-GDBus.c b/examples/C/glib/monitor-nm-running-gdbus.c
index 9e38d4c70d..2e1a11c0c8 100644
--- a/examples/C/glib/monitor-nm-running-GDBus.c
+++ b/examples/C/glib/monitor-nm-running-gdbus.c
@@ -1,5 +1,4 @@
 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
-/* vim: set ft=c ts=4 sts=4 sw=4 noexpandtab smartindent: */
 /*
  * 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
@@ -15,7 +14,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
- * (C) Copyright 2012 Red Hat, Inc.
+ * Copyright 2012 Red Hat, Inc.
  */
 
 /*
@@ -26,7 +25,7 @@
  * See also http://developer.gnome.org/gio/stable/gio-Watching-Bus-Names.html
  *
  * Standalone compilation:
- *   gcc -Wall `pkg-config --libs --cflags glib-2.0 gio-2.0` monitor-nm-running-GDBus.c -o monitor-nm-running-GDBus
+ *   gcc -Wall `pkg-config --libs --cflags glib-2.0 gio-2.0` monitor-nm-running-gdbus.c -o monitor-nm-running-gdbus
  */
 
 #include <gio/gio.h>
diff --git a/examples/C/glib/monitor-nm-state-GDBus.c b/examples/C/glib/monitor-nm-state-gdbus.c
index 5131b8c867..05596399d9 100644
--- a/examples/C/glib/monitor-nm-state-GDBus.c
+++ b/examples/C/glib/monitor-nm-state-gdbus.c
@@ -1,5 +1,4 @@
 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
-/* vim: set ft=c ts=4 sts=4 sw=4 noexpandtab smartindent: */
 /*
  * 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
@@ -15,7 +14,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
- * (C) Copyright 2012 Red Hat, Inc.
+ * Copyright 2012 Red Hat, Inc.
  */
 
 /*
@@ -23,11 +22,11 @@
  * "org.freedesktop.NetworkManager" object.
  * It uses GDBus and the libnm headers.
 
- * You don't need to have NetworkManager devel package installed. You can just
+ * You don't need to have the NetworkManager devel packages installed. You can just
  * grab nm-dbus-interface.h and put it in the path.
  *
  * Standalone compilation:
- *   gcc -Wall `pkg-config --libs --cflags glib-2.0 gio-2.0` `pkg-config --cflags libnm` monitor-nm-state-GDBus.c -o monitor-nm-state-GDBus
+ *   gcc -Wall `pkg-config --libs --cflags glib-2.0 gio-2.0` `pkg-config --cflags libnm` monitor-nm-state-gdbus.c -o monitor-nm-state-gdbus
  */
 
 #include <gio/gio.h>
@@ -112,6 +111,7 @@ main (int argc, char *argv[])
 
 	if (proxy == NULL)
 	{
+		g_dbus_error_strip_remote_error (error);
 		g_printerr ("Error creating D-Bus proxy: %s\n", error->message);
 		g_error_free (error);
 		return -1;