examples: add a Python example deactivating connections by type (bgo #732826)

https://bugzilla.gnome.org/show_bug.cgi?id=732826

examples/python/gi/Makefile.am

@@ -6,4 +6,5 @@ EXTRA_DIST = \
 	get_ips.py \
 	add_connection.py \
 	get-active-connections.py \
-	update-ip4-method.py
+	update-ip4-method.py \
+	deactivate-all.py

examples/python/gi/deactivate-all.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+# -*- Mode: Python; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# vim: ft=python ts=4 sts=4 sw=4 et ai
+
+#
+# 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 2015 Red Hat, Inc.
+#
+
+#
+# This example deactivates all active connections (of certain type).
+# It makes use of libnm via GObject introspection.
+#
+# Links:
+# https://developer.gnome.org/libnm/1.0/
+# https://wiki.gnome.org/GObjectIntrospection
+# https://wiki.gnome.org/PyGObject
+#
+
+import sys
+from gi.repository import NM
+
+# suported connection types
+connection_types = {
+  NM.SETTING_VPN_SETTING_NAME,
+  NM.SETTING_WIRELESS_SETTING_NAME,
+  NM.SETTING_WIRED_SETTING_NAME,
+  NM.SETTING_BOND_SETTING_NAME,
+  NM.SETTING_BRIDGE_SETTING_NAME,
+  NM.SETTING_TEAM_SETTING_NAME,
+  NM.SETTING_INFINIBAND_SETTING_NAME,
+  NM.SETTING_PPPOE_SETTING_NAME,
+  NM.SETTING_ADSL_SETTING_NAME,
+  NM.SETTING_BLUETOOTH_SETTING_NAME,
+  NM.SETTING_WIMAX_SETTING_NAME,
+  NM.SETTING_OLPC_MESH_SETTING_NAME,
+  NM.SETTING_GENERIC_SETTING_NAME,
+}
+
+
+if __name__ == "__main__":
+    if len(sys.argv) == 1:
+        ctype = None
+    else:
+        allowed_types = ", ".join(connection_types)
+        if len(sys.argv) == 2:
+            ctype = sys.argv[1]
+            if ctype not in connection_types:
+                sys.exit('Usage: %s [<type>]\nAllowed types: %s' % (sys.argv[0], allowed_types))
+        else:
+            sys.exit('Usage: %s [<type>]\nAllowed types: %s' % (sys.argv[0], allowed_types))
+
+    # create Client object
+    client = NM.Client.new(None)
+
+    # get all active connections
+    connections = client.get_active_connections()
+
+    # deactivate the connections
+    for ac in connections:
+        if ctype == None or ctype == ac.get_connection_type():
+            sys.stdout.write("Deactivating %s (%s)" % (ac.get_id(), ac.get_uuid()))
+            try:
+                client.deactivate_connection(ac, None)
+                sys.stdout.write("\033[32m  -> succeeded\033[0m\n")
+            except Exception, e:
+               sys.stdout.write("\033[31m  -> failed\033[0m (%s)\n" % e.message)
+