#!/usr/bin/env python
# SPDX-License-Identifier: GPL-2.0-or-later
#
# 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 GLib

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

    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 = GLib.MainLoop()


def properties_changed(interface_name, changed_properties, invalidated_properties):
    if (
        interface_name == "org.freedesktop.NetworkManager.Connection.Active"
        and "State" in changed_properties
    ):
        state = changed_properties["State"]
        if state == 2:
            print("Successfully connected")
            loop.quit()
        if state == 3 or state == 4:
            print("Bond activation failed")
            loop.quit()


obj = bus.get_object("org.freedesktop.NetworkManager", ac)
iface = dbus.Interface(obj, "org.freedesktop.DBus.Properties")
iface.connect_to_signal("PropertiesChanged", properties_changed)

loop.run()