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#!/usr/bin/python

import gobject

import dbus
import dbus.mainloop.glib

from dbus.lowlevel import MethodCallMessage, HANDLER_RESULT_NOT_YET_HANDLED

def extract_list(list):
	val = "["
	for i in list:
		if type(i).__name__ == 'Dictionary':
			val += extract_values(i)
		elif type(i).__name__ == 'Struct':
			val += extract_list(i)
		else:
			val += " " + str(i)
	val += "]"
	return val

def extract_values(values):
	val = "{"
	for key in values.keys():
		val += " " + key + "="
		if key in ["ProtocolFamily"]:
			val += "%s" % (int(values[key]))
		elif key in ["IPv4", "IPv6"]:
			val += extract_values(values[key])
		else:
			val += str(values[key])
	val += " }"
	return val

def extract(name, value):
	val = None

	if name in ["Index"]:
		val = int(value)
	elif name in ["IPv4", "IPv6" ]:
		val = extract_values(value)
	elif name in ["UserRoutes", "ServerRoutes", "Nameservers"]:
		val = extract_list(value)
	else:
		val = str(value)

	return val

def property_changed(name, value, path, interface):
	iface = interface[interface.rfind(".") + 1:]
	val = extract(name, value)

	print "{%s} [%s] %s = %s" % (iface, path, name, val)

def message_filter(connection, message):
	if not isinstance(message, MethodCallMessage):
		return HANDLER_RESULT_NOT_YET_HANDLED

	interface = message.get_interface()
	path = message.get_path()
	name = message.get_member()
	args = message.get_args_list()

	property_changed(name, args, path, interface)

if __name__ == '__main__':
	dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)

	bus = dbus.SystemBus()

	bus.add_signal_receiver(property_changed,
					bus_name="net.connman.vpn",
					signal_name = "PropertyChanged",
						path_keyword="path",
						interface_keyword="interface")

	bus.add_message_filter(message_filter)

	mainloop = gobject.MainLoop()

	mainloop.run()