#!/usr/bin/env python

# SPDX-License-Identifier: GPL-2.0+

#

# Copyright (C) 2014 Red Hat, Inc.

#

#

# This example updates a connection's IPv4 method with the Update() method

# using the libnm GObject-based convenience APIs.

#

# Configuration settings are described at

# https://developer.gnome.org/NetworkManager/1.0/ref-settings.html

#

import gi

gi.require_version("NM", "1.0")

from gi.repository import GLib, NM

import sys, socket

if __name__ == "__main__":

    # parse and validate arguments

    if len(sys.argv) < 3:

        print("Usage: %s <uuid> <auto|static> [address prefix gateway]" % sys.argv[0])

        sys.exit(1)

    method = sys.argv[2]

    if (method == "static" or method == "manual") and len(sys.argv) < 5:

        print(

            "Usage: %s %s static address prefix [gateway]" % (sys.argv[0], sys.argv[1])

        )

        sys.exit(1)

    uuid = sys.argv[1]

    # Convert method to NM method

    if method == "static":

        method = "manual"

    main_loop = GLib.MainLoop()

    # create Client object

    client = NM.Client.new(None)

    all_connections = client.get_connections()

    for c in all_connections:

        if c.get_uuid() != uuid:

            continue

        # add IPv4 setting if it doesn't yet exist

        s_ip4 = c.get_setting_ip4_config()

        if not s_ip4:

            s_ip4 = NM.SettingIP4Config.new()

            c.add_setting(s_ip4)

        # set the method and change properties

        s_ip4.set_property(NM.SETTING_IP_CONFIG_METHOD, method)

        if method == "auto":

            # remove addresses and gateway

            s_ip4.clear_addresses()

            s_ip4.props.gateway = None

        elif method == "manual":

            # Add the static IP address, prefix, and (optional) gateway

            addr = NM.IPAddress.new(socket.AF_INET, sys.argv[3], int(sys.argv[4]))

            s_ip4.add_address(addr)

            if len(sys.argv) == 6:

                s_ip4.props.gateway = sys.argv[5]

        try:

            c.commit_changes(True, None)

            print("The connection profile has been updated.")

        except Exception as e:

            sys.stderr.write("Error: %s\n" % e)

        break