# 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>

"""
Skinny Call Control Protocol (SCCP)
"""

from scapy.packet import Packet, bind_layers
from scapy.fields import LEIntField, LEIntEnumField
from scapy.layers.inet import TCP

# shamelessly ripped from Ethereal dissector
skinny_messages = {
    # Station -> Callmanager
    0x0000: "KeepAliveMessage",
    0x0001: "RegisterMessage",
    0x0002: "IpPortMessage",
    0x0003: "KeypadButtonMessage",
    0x0004: "EnblocCallMessage",
    0x0005: "StimulusMessage",
    0x0006: "OffHookMessage",
    0x0007: "OnHookMessage",
    0x0008: "HookFlashMessage",
    0x0009: "ForwardStatReqMessage",
    0x000A: "SpeedDialStatReqMessage",
    0x000B: "LineStatReqMessage",
    0x000C: "ConfigStatReqMessage",
    0x000D: "TimeDateReqMessage",
    0x000E: "ButtonTemplateReqMessage",
    0x000F: "VersionReqMessage",
    0x0010: "CapabilitiesResMessage",
    0x0011: "MediaPortListMessage",
    0x0012: "ServerReqMessage",
    0x0020: "AlarmMessage",
    0x0021: "MulticastMediaReceptionAck",
    0x0022: "OpenReceiveChannelAck",
    0x0023: "ConnectionStatisticsRes",
    0x0024: "OffHookWithCgpnMessage",
    0x0025: "SoftKeySetReqMessage",
    0x0026: "SoftKeyEventMessage",
    0x0027: "UnregisterMessage",
    0x0028: "SoftKeyTemplateReqMessage",
    0x0029: "RegisterTokenReq",
    0x002A: "MediaTransmissionFailure",
    0x002B: "HeadsetStatusMessage",
    0x002C: "MediaResourceNotification",
    0x002D: "RegisterAvailableLinesMessage",
    0x002E: "DeviceToUserDataMessage",
    0x002F: "DeviceToUserDataResponseMessage",
    0x0030: "UpdateCapabilitiesMessage",
    0x0031: "OpenMultiMediaReceiveChannelAckMessage",
    0x0032: "ClearConferenceMessage",
    0x0033: "ServiceURLStatReqMessage",
    0x0034: "FeatureStatReqMessage",
    0x0035: "CreateConferenceResMessage",
    0x0036: "DeleteConferenceResMessage",
    0x0037: "ModifyConferenceResMessage",
    0x0038: "AddParticipantResMessage",
    0x0039: "AuditConferenceResMessage",
    0x0040: "AuditParticipantResMessage",
    0x0041: "DeviceToUserDataVersion1Message",
    # Callmanager -> Station */
    0x0081: "RegisterAckMessage",
    0x0082: "StartToneMessage",
    0x0083: "StopToneMessage",
    0x0085: "SetRingerMessage",
    0x0086: "SetLampMessage",
    0x0087: "SetHkFDetectMessage",
    0x0088: "SetSpeakerModeMessage",
    0x0089: "SetMicroModeMessage",
    0x008A: "StartMediaTransmission",
    0x008B: "StopMediaTransmission",
    0x008C: "StartMediaReception",
    0x008D: "StopMediaReception",
    0x008F: "CallInfoMessage",
    0x0090: "ForwardStatMessage",
    0x0091: "SpeedDialStatMessage",
    0x0092: "LineStatMessage",
    0x0093: "ConfigStatMessage",
    0x0094: "DefineTimeDate",
    0x0095: "StartSessionTransmission",
    0x0096: "StopSessionTransmission",
    0x0097: "ButtonTemplateMessage",
    0x0098: "VersionMessage",
    0x0099: "DisplayTextMessage",
    0x009A: "ClearDisplay",
    0x009B: "CapabilitiesReqMessage",
    0x009C: "EnunciatorCommandMessage",
    0x009D: "RegisterRejectMessage",
    0x009E: "ServerResMessage",
    0x009F: "Reset",
    0x0100: "KeepAliveAckMessage",
    0x0101: "StartMulticastMediaReception",
    0x0102: "StartMulticastMediaTransmission",
    0x0103: "StopMulticastMediaReception",
    0x0104: "StopMulticastMediaTransmission",
    0x0105: "OpenReceiveChannel",
    0x0106: "CloseReceiveChannel",
    0x0107: "ConnectionStatisticsReq",
    0x0108: "SoftKeyTemplateResMessage",
    0x0109: "SoftKeySetResMessage",
    0x0110: "SelectSoftKeysMessage",
    0x0111: "CallStateMessage",
    0x0112: "DisplayPromptStatusMessage",
    0x0113: "ClearPromptStatusMessage",
    0x0114: "DisplayNotifyMessage",
    0x0115: "ClearNotifyMessage",
    0x0116: "ActivateCallPlaneMessage",
    0x0117: "DeactivateCallPlaneMessage",
    0x0118: "UnregisterAckMessage",
    0x0119: "BackSpaceReqMessage",
    0x011A: "RegisterTokenAck",
    0x011B: "RegisterTokenReject",
    0x0042: "DeviceToUserDataResponseVersion1Message",
    0x011C: "StartMediaFailureDetection",
    0x011D: "DialedNumberMessage",
    0x011E: "UserToDeviceDataMessage",
    0x011F: "FeatureStatMessage",
    0x0120: "DisplayPriNotifyMessage",
    0x0121: "ClearPriNotifyMessage",
    0x0122: "StartAnnouncementMessage",
    0x0123: "StopAnnouncementMessage",
    0x0124: "AnnouncementFinishMessage",
    0x0127: "NotifyDtmfToneMessage",
    0x0128: "SendDtmfToneMessage",
    0x0129: "SubscribeDtmfPayloadReqMessage",
    0x012A: "SubscribeDtmfPayloadResMessage",
    0x012B: "SubscribeDtmfPayloadErrMessage",
    0x012C: "UnSubscribeDtmfPayloadReqMessage",
    0x012D: "UnSubscribeDtmfPayloadResMessage",
    0x012E: "UnSubscribeDtmfPayloadErrMessage",
    0x012F: "ServiceURLStatMessage",
    0x0130: "CallSelectStatMessage",
    0x0131: "OpenMultiMediaChannelMessage",
    0x0132: "StartMultiMediaTransmission",
    0x0133: "StopMultiMediaTransmission",
    0x0134: "MiscellaneousCommandMessage",
    0x0135: "FlowControlCommandMessage",
    0x0136: "CloseMultiMediaReceiveChannel",
    0x0137: "CreateConferenceReqMessage",
    0x0138: "DeleteConferenceReqMessage",
    0x0139: "ModifyConferenceReqMessage",
    0x013A: "AddParticipantReqMessage",
    0x013B: "DropParticipantReqMessage",
    0x013C: "AuditConferenceReqMessage",
    0x013D: "AuditParticipantReqMessage",
    0x013F: "UserToDeviceDataVersion1Message",
}


class Skinny(Packet):
    name = "Skinny"
    fields_desc = [LEIntField("len", 0),
                   LEIntField("res", 0),
                   LEIntEnumField("msg", 0, skinny_messages)]


bind_layers(TCP, Skinny, dport=2000)
bind_layers(TCP, Skinny, sport=2000)
bind_layers(TCP, Skinny, dport=2000, sport=2000)