#!/usr/bin/env python

# SPDX-License-Identifier: GPL-2.0+

#

# Copyright (C) 2015 Red Hat, Inc.

#

#

# This example configures a Bond from ethernet devices and activates it

#

# NetworkManager D-Bus API:

# https://developer.gnome.org/NetworkManager/stable/spec.html

#

import dbus, sys, uuid

from dbus.mainloop.glib import DBusGMainLoop

from gi.repository import GObject

DBusGMainLoop(set_as_default=True)

def add_connection(con):

    bus = dbus.SystemBus()

    proxy = bus.get_object(

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

    )

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

    return settings.AddConnection(con)

def create_bond(bond_name):

    bond_opts = dbus.Dictionary({"mode": "4"})

    s_bond = dbus.Dictionary({"options": bond_opts})

    s_con = dbus.Dictionary(

        {

            "type": "bond",

            "uuid": str(uuid.uuid4()),

            "id": bond_name,

            "interface-name": bond_name,

            "autoconnect": False,

            "autoconnect-slaves": 1,

        }

    )

    s_ip4 = dbus.Dictionary({"method": "auto"})

    s_ip6 = dbus.Dictionary({"method": "ignore"})

    con = dbus.Dictionary(

        {"bond": s_bond, "connection": s_con, "ipv4": s_ip4, "ipv6": s_ip6}

    )

    print("Creating bond connection: %s" % bond_name)

    return add_connection(con)

def create_slave(device, master):

    slave_name = "bond-" + master + "-slave-" + device

    s_wired = dbus.Dictionary({"duplex": "full"})

    s_con = dbus.Dictionary(

        {

            "type": "802-3-ethernet",

            "uuid": str(uuid.uuid4()),

            "id": slave_name,

            "interface-name": device,

            "autoconnect": False,

            "master": master,

            "slave-type": "bond",

        }

    )

    con = dbus.Dictionary({"802-3-ethernet": s_wired, "connection": s_con})

    print("Creating slave connection: %s" % slave_name)

    add_connection(con)

def usage():

    print("Usage: %s <bond_name> <ifname1> ..." % sys.argv[0])

    sys.exit(0)

if len(sys.argv) < 3:

    usage()

# Create bond master and slave connections

bond_name = sys.argv[1]

bond_path = create_bond(bond_name)

for ifname in sys.argv[2:]:

    create_slave(ifname, bond_name)

# Activate the bond

bus = dbus.SystemBus()

proxy = bus.get_object(

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

)

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

ac = manager.ActivateConnection(bond_path, "/", "/")

print("Activating bond: %s (%s)" % (bond_name, ac))

# Monitor the active bond connection

loop = GObject.MainLoop()

def properties_changed(props):

    if "State" in props:

        if props["State"] == 2:

            print("Successfully connected")

            loop.quit()

        if props["State"] == 3 or props["State"] == 4:

            print("Bond activation failed")

            loop.quit()

obj = bus.get_object("org.freedesktop.NetworkManager", ac)

iface = dbus.Interface(obj, "org.freedesktop.NetworkManager.Connection.Active")

iface.connect_to_signal("PropertiesChanged", properties_changed)

loop.run()