#!/usr/bin/python3
#
#  OpenVPN 3 Linux client -- Next generation OpenVPN client
#
#  SPDX-License-Identifier: AGPL-3.0-only
#
#  Copyright (C) 2019 - 2023  OpenVPN Inc <sales@openvpn.net>
#  Copyright (C) 2019 - 2023  David Sommerseth <davids@openvpn.net>
#

##
# @file  netcfg-subscription-test
#
# @brief Simple test program making use of the openvpn3.NetCfgManager
#        module to subscribe to certain events.
#
#        NOTE: The openvpn3-linux default configuration requires the
#              the openvpn user account to run this program
#

import dbus
from dbus.mainloop.glib import DBusGMainLoop
from gi.repository import GLib
import openvpn3
from openvpn3 import NetCfgChangeType as CT


# Simple callback function which prints the NetworkChange event to console
def netchg_callback(event):
    print ("Device: %s - Type: %s" % (event.GetDevice(), event.GetType().name))
    for (k,v) in event.GetAllDetails().items():
        print ("  - %s: %s" % (str(k), str(v)))
    print("-----------")

# Simple callback function printing Log events to console
def log_callback(grp, ctg, msg):
    print("LOG: [%u:%u] %s" % (grp, ctg, msg))


# Prepare the D-Bus connection, it needs to have a mainloop for
# asynchronous handling
mainloop = GLib.MainLoop()
dbusloop = DBusGMainLoop(set_as_default=True)
sysbus = dbus.SystemBus(mainloop=dbusloop)

# Get a connection to the net.openvpn.v3.netcfg service (NetCfg service)
nc = openvpn3.NetCfgManager(sysbus)

# Subscribe to log events
nc.LogCallback(log_callback)

# Subscribe to device, IP address and route related events
nc.SubscribeNetworkChange(netchg_callback, CT.DEVICE_ADDED | CT.DEVICE_REMOVED | CT.IPADDR_ADDED | CT.IPADDR_REMOVED | CT.ROUTE_ADDED | CT.ROUTE_REMOVED)

# Main loop - wait for events to occur
try:
    mainloop.run()
except KeyboardInterrupt:
    print("Stopping")
    pass

# Clean up and unsubscribe
nc.UnsubscribeNetworkChange()