#!/usr/bin/env python

# SPDX-License-Identifier: GPL-2.0+

#

# Copyright (C) 2010 Red Hat, Inc.

#

import dbus, sys

# This example takes a device interface name as a parameter and tells

# NetworkManager to disconnect that device, closing down any network

# connection it may have

if len(sys.argv) != 2:

    raise Exception("Usage: %s <interface>" % sys.argv[0])

bus = dbus.SystemBus()

# Get a proxy for the base NetworkManager object

proxy = bus.get_object(

    "org.freedesktop.NetworkManager", "/org/freedesktop/NetworkManager"

)

manager = dbus.Interface(proxy, "org.freedesktop.NetworkManager")

dpath = None

# Find the device the user wants to disconnect

devices = manager.GetDevices()

for d in devices:

    dev_proxy = bus.get_object("org.freedesktop.NetworkManager", d)

    prop_iface = dbus.Interface(dev_proxy, "org.freedesktop.DBus.Properties")

    iface = prop_iface.Get("org.freedesktop.NetworkManager.Device", "Interface")

    if iface == sys.argv[1]:

        dpath = d

        break

if not dpath or not len(dpath):

    raise Exception("NetworkManager knows nothing about %s" % sys.argv[1])

dev_proxy = bus.get_object("org.freedesktop.NetworkManager", dpath)

dev_iface = dbus.Interface(dev_proxy, "org.freedesktop.NetworkManager.Device")

prop_iface = dbus.Interface(dev_proxy, "org.freedesktop.DBus.Properties")

# Make sure the device is connected before we try to disconnect it

state = prop_iface.Get("org.freedesktop.NetworkManager.Device", "State")

if state <= 3:

    raise Exception("Device %s isn't connected" % sys.argv[1])

# Tell NM to disconnect it

dev_iface.Disconnect()