# SPDX-License-Identifier: GPL-2.0-only
# This file is part of Scapy
# See https://scapy.net/ for more information
# Copyright (C) Philippe Biondi <phil@secdev.org>

"""
MGCP (Media Gateway Control Protocol)

[RFC 2805]
"""

from scapy.packet import Packet, bind_layers, bind_bottom_up
from scapy.fields import StrFixedLenField, StrStopField
from scapy.layers.inet import UDP


class MGCP(Packet):
    name = "MGCP"
    longname = "Media Gateway Control Protocol"
    fields_desc = [StrStopField("verb", "AUEP", b" ", -1),
                   StrFixedLenField("sep1", " ", 1),
                   StrStopField("transaction_id", "1234567", b" ", -1),
                   StrFixedLenField("sep2", " ", 1),
                   StrStopField("endpoint", "dummy@dummy.net", b" ", -1),
                   StrFixedLenField("sep3", " ", 1),
                   StrStopField("version", "MGCP 1.0 NCS 1.0", b"\x0a", -1),
                   StrFixedLenField("sep4", b"\x0a", 1),
                   ]


# class MGCP(Packet):
#    name = "MGCP"
#    longname = "Media Gateway Control Protocol"
#    fields_desc = [ ByteEnumField("type",0, ["request","response","others"]),
#                    ByteField("code0",0),
#                    ByteField("code1",0),
#                    ByteField("code2",0),
#                    ByteField("code3",0),
#                    ByteField("code4",0),
#                    IntField("trasid",0),
#                    IntField("req_time",0),
#                    ByteField("is_duplicate",0),
#                    ByteField("req_available",0) ]
#
bind_bottom_up(UDP, MGCP, dport=2727)
bind_bottom_up(UDP, MGCP, sport=2727)
bind_layers(UDP, MGCP, sport=2727, dport=2727)