2428 lines
71 KiB
Python
2428 lines
71 KiB
Python
# -*- coding: UTF-8 -*-
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#/**
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# * Software Name : pycrate
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# * Version : 0.4
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# *
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# * Copyright 2019. Benoit Michau. P1Sec.
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# *
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# * This library is free software; you can redistribute it and/or
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# * modify it under the terms of the GNU Lesser General Public
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# * License as published by the Free Software Foundation; either
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# * version 2.1 of the License, or (at your option) any later version.
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# *
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# * This library is distributed in the hope that it will be useful,
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# * Lesser General Public License for more details.
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# *
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# * You should have received a copy of the GNU Lesser General Public
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# * License along with this library; if not, write to the Free Software
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# * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# * MA 02110-1301 USA
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# *
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# *--------------------------------------------------------
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# * File Name : pycrate_mobile/TS24501_IE.py
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# * Created : 2019-11-08
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# * Authors : Benoit Michau
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# *--------------------------------------------------------
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#*/
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#------------------------------------------------------------------------------#
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# 3GPP TS 24.501: NAS protocol for 5G
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# release 16 (g20)
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#------------------------------------------------------------------------------#
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from pycrate_core.utils import *
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from pycrate_core.elt import (
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Envelope, Sequence, Array, Alt,
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REPR_RAW, REPR_HEX, REPR_BIN, REPR_HD, REPR_HUM
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)
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from pycrate_core.base import *
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from pycrate_core.repr import *
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from pycrate_core.charpy import Charpy
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from pycrate_ether.Ethernet import EtherType_dict
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from pycrate_ether.IP import IPProt_dict
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from pycrate_mobile.TS24008_IE import (
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BufBCD, PLMN, GPRSTimer3, APN, TFT,
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)
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from pycrate_mobile.TS24301_IE import (
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EPSQoS, ExtEPSQoS, APN_AMBR, ExtAPN_AMBR,
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)
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_str_reserved = 'reserved'
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_str_mnospec = 'operator-specific'
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#------------------------------------------------------------------------------#
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# Security header type
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# TS 24.501, 9.3.1
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#------------------------------------------------------------------------------#
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SecHdrType_dict = {
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0 : 'No security',
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1 : 'Integrity protected',
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2 : 'Integrity protected and ciphered',
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3 : 'Integrity protected with new 5G NAS security context',
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4 : 'Integrity protected and ciphered with new 5G NAS security context'
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}
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#------------------------------------------------------------------------------#
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# DNN
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# TS 24.501, 9.11.2.1A
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#------------------------------------------------------------------------------#
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class DNN(Envelope):
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_GEN = (
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Uint8('Len'),
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APN()
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)
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def __init__(self, *args, **kwargs):
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Envelope.__init__(self, *args, **kwargs)
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self[0].set_valauto(lambda: self[1].get_len())
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#self[1].set_blauto(lambda: self[0].get_val()<<3)
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#------------------------------------------------------------------------------#
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# S-NSSAI
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# TS 24.501, 9.11.2.8
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#------------------------------------------------------------------------------#
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class SNSSAI(Envelope):
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ENV_SEL_TRANS = False
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_GEN = (
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Uint8('SST'),
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Uint24('SD', trans=True),
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Uint8('MappedHPLMNSST', trans=True),
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Uint24('MappedHPLMNSD', trans=True)
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)
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def set_val(self, val):
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if isinstance(val, (tuple, list)):
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if len(val) == 1:
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self[1].set_trans(True)
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self[2].set_trans(True)
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self[3].set_trans(True)
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elif len(val) == 2:
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self[1].set_trans(False)
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self[2].set_trans(True)
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self[3].set_trans(True)
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elif len(val) == 3:
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self[1].set_trans(False)
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self[2].set_trans(False)
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self[3].set_trans(True)
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elif len(val) > 3:
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self[1].set_trans(False)
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self[2].set_trans(False)
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self[3].set_trans(False)
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elif isinstance(val, dict):
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if 'SD' in val:
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self[1].set_trans(False)
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if 'MappedHPLMNSST' in val:
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self[2].set_trans(False)
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if 'MappedHPLMNSD' in val:
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self[3].set_trans(False)
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Envelope.set_val(self, val)
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def _from_char(self, char):
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l = char.len_bit()
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if l == 8:
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self[1].set_trans(True)
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self[2].set_trans(True)
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self[3].set_trans(True)
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elif l == 32:
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self[1].set_trans(False)
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self[2].set_trans(True)
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self[3].set_trans(True)
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elif l == 40:
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self[1].set_trans(False)
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self[2].set_trans(False)
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self[3].set_trans(True)
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elif l >= 64:
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self[1].set_trans(False)
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self[2].set_trans(False)
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self[3].set_trans(False)
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Envelope._from_char(self, char)
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class L_SNSSAI(Envelope):
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_name = 'SNSSAI'
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_GEN = (
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Uint8('Len'),
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SNSSAI()
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)
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def __init__(self, *args, **kwargs):
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Envelope.__init__(self, *args, **kwargs)
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self[0].set_valauto(lambda: self[1].get_len())
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self[1].set_blauto(lambda: self[0].get_val()<<3)
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#------------------------------------------------------------------------------#
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# 5GMM capability
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# TS 24.501, 9.11.3.1
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#------------------------------------------------------------------------------#
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class FGMMCap(Envelope):
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ENV_SEL_TRANS = False
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_name = '5GMMCap'
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_GEN = (
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Uint('SGC', bl=1),
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Uint('5G-HC-CP-CIoT', bl=1),
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Uint('N3Data', bl=1),
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Uint('5G-CP-CIoT', bl=1),
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Uint('RestrictEC', bl=1),
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Uint('LPP', bl=1),
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Uint('HOAttach', bl=1),
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Uint('S1Mode', bl=1),
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Uint('RACS', bl=1),
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Uint('NSSAA', bl=1),
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Uint('5G-LCS', bl=1),
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Uint('V2XCNPC5', bl=1),
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Uint('V2XCEPC5', bl=1),
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Uint('V2X', bl=1),
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Uint('5G-UP-CIoT', bl=1),
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Uint('5GSRVCC', bl=1), # end of octet 2
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Buf('spare', val=b'', rep=REPR_HEX)
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)
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def _from_char(self, char):
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if self.get_trans():
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return
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l = char.len_bit()
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if l <= 16:
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# disable all elements after bit l
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self.disable_from(l)
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elif l > 16:
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# enables some spare bits at the end
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self[-1]._bl = l-16
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Envelope._from_char(self, char)
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def disable_from(self, ind):
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"""disables all elements from index `ind' excluded (integer -bit offset-
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or element name)
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"""
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if isinstance(ind, str_types) and ind in self._by_name:
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ind = self._by_name.index(ind)
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[e.set_trans(True) for e in self._content[ind:]]
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def enable_upto(self, ind):
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"""enables all elements up to index `ind' included (integer -bit offset-
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or element name)
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"""
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if isinstance(ind, str_types) and ind in self._by_name:
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ind = 1 + self._by_name.index(ind)
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[e.set_trans(False) for e in self._content[:ind]]
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#------------------------------------------------------------------------------#
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# 5GMM cause
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# TS 24.501, 9.11.3.2
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#------------------------------------------------------------------------------#
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_FGMMCause_dict = {
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3 : 'Illegal UE',
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5 : 'PEI not accepted',
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6 : 'Illegal ME',
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7 : '5GS services not allowed',
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9 : 'UE identity cannot be derived by the network',
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10 : 'Implicitly de-registered',
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11 : 'PLMN not allowed',
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12 : 'Tracking area not allowed',
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13 : 'Roaming not allowed in this tracking area',
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15 : 'No suitable cells in tracking area',
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20 : 'MAC failure',
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21 : 'Synch failure',
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22 : 'Congestion',
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23 : 'UE security capabilities mismatch',
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24 : 'Security mode rejected, unspecified',
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26 : 'Non-5G authentication unacceptable',
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27 : 'N1 mode not allowed',
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28 : 'Restricted service area',
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31 : 'Redirection to EPC required',
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43 : 'LADN not available',
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62 : 'No network slices available',
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65 : 'Maximum number of PDU sessions reached',
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67 : 'Insufficient resources for specific slice and DNN',
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69 : 'Insufficient resources for specific slice',
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71 : 'ngKSI already in use',
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72 : 'Non-3GPP access to 5GCN not allowed',
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73 : 'Serving network not authorized',
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74 : 'Temporarily not authorized for this SNPN',
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75 : 'Permanently not authorized for this SNPN',
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76 : 'Not authorized for this CAG or authorized for CAG cells only',
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90 : 'Payload was not forwarded',
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91 : 'DNN not supported or not subscribed in the slice',
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92 : 'Insufficient user-plane resources for the PDU session',
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95 : 'Semantically incorrect message',
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96 : 'Invalid mandatory information',
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97 : 'Message type non-existent or not implemented',
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98 : 'Message type not compatible with the protocol state',
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99 : 'Information element non-existent or not implemented',
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||
100 : 'Conditional IE error',
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||
101 : 'Message not compatible with the protocol state',
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||
111 : 'Protocol error, unspecified'
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||
}
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||
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||
class FGMMCause(Uint8):
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_name = '5GMMCause'
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_dic = _FGMMCause_dict
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#------------------------------------------------------------------------------#
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# 5GS DRX parameters
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# TS 24.501, 9.11.3.2A
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#------------------------------------------------------------------------------#
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_FGSDRXParam_dict = {
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0 : 'DRX value not specified',
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1 : 'DRX cycle parameter T = 32',
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2 : 'DRX cycle parameter T = 64',
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||
3 : 'DRX cycle parameter T = 128',
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||
4 : 'DRX cycle parameter T = 256'
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||
}
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||
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||
class FGSDRXParam(Envelope):
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_name = '5GSDRXParam'
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||
_GEN = (
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Uint('spare', bl=4, rep=REPR_HEX),
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Uint('Value', bl=4, dic=_FGSDRXParam_dict)
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)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
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||
# 5GS identity type
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# TS 24.501, 9.11.3.3
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#------------------------------------------------------------------------------#
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_FGSIDType_dict = {
|
||
1 : 'SUCI',
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||
2 : '5G-GUTI',
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||
3 : 'IMEI',
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||
4 : '5G-S-TMSI',
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||
5 : 'IMEISV',
|
||
6 : 'MAC address'
|
||
}
|
||
|
||
class FGSIDType(Envelope):
|
||
_name = '5GSIDType'
|
||
_GEN = (
|
||
Uint('spare', bl=1),
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Uint('Value', bl=3, dic=_FGSIDType_dict)
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||
)
|
||
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||
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#------------------------------------------------------------------------------#
|
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# 5GS mobile identity
|
||
# TS 24.501, 9.11.3.4
|
||
#------------------------------------------------------------------------------#
|
||
|
||
FGSIDFMT_IMSI = 0
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||
FGSIDFMT_NAI = 1
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||
|
||
FGSIDFmt_dict = {
|
||
0 : 'IMSI',
|
||
1 : 'NAI'
|
||
}
|
||
|
||
FGSIDTYPE_NO = 0
|
||
FGSIDTYPE_SUPI = 1
|
||
FGSIDTYPE_GUTI = 2
|
||
FGSIDTYPE_IMEI = 3
|
||
FGSIDTYPE_TMSI = 4
|
||
FGSIDTYPE_IMEISV = 5
|
||
FGSIDTYPE_MAC = 6
|
||
|
||
FGSIDType_dict = {
|
||
0 : 'No identity',
|
||
1 : 'SUCI',
|
||
2 : '5G-GUTI',
|
||
3 : 'IMEI',
|
||
4 : '5G-S-TMSI',
|
||
5 : 'IMEISV',
|
||
6 : 'MAC address'
|
||
}
|
||
|
||
_ProtSchemeID_dict = {
|
||
0 : 'Null scheme',
|
||
1 : 'ECIES scheme profile A',
|
||
2 : 'ECIES scheme profile B',
|
||
3 : _str_reserved,
|
||
4 : _str_reserved,
|
||
5 : _str_reserved,
|
||
6 : _str_reserved,
|
||
7 : _str_reserved,
|
||
8 : _str_reserved,
|
||
9 : _str_reserved,
|
||
10 : _str_reserved,
|
||
11 : _str_reserved,
|
||
12 : _str_mnospec,
|
||
13 : _str_mnospec,
|
||
14 : _str_mnospec,
|
||
15 : _str_mnospec
|
||
}
|
||
|
||
|
||
class SUCI_ECIESProfA(Envelope):
|
||
# Curve25519
|
||
_GEN = (
|
||
Buf('ECCEphemPK', bl=256, rep=REPR_HEX),
|
||
Buf('CipherText', rep=REPR_HEX),
|
||
Buf('MAC', bl=64, rep=REPR_HEX)
|
||
)
|
||
|
||
def _from_char(self, char):
|
||
if self.get_trans():
|
||
return
|
||
self[0]._from_char(char)
|
||
ct_bl = char.len_bit() - 64
|
||
if ct_bl > 0:
|
||
self[1]._bl = ct_bl
|
||
self[1]._from_char(char)
|
||
self[1]._bl = None
|
||
self[2]._from_char(char)
|
||
|
||
|
||
class SUCI_ECIESProfB(Envelope):
|
||
# secp256r1
|
||
_GEN = (
|
||
Buf('ECCEphemPK', bl=264, rep=REPR_HEX),
|
||
Buf('CipherText', rep=REPR_HEX),
|
||
Buf('MAC', bl=64, rep=REPR_HEX)
|
||
)
|
||
|
||
def _from_char(self, char):
|
||
if self.get_trans():
|
||
return
|
||
self[0]._from_char(char)
|
||
ct_bl = char.len_bit() - 64
|
||
if ct_bl > 0:
|
||
self[1]._bl = ct_bl
|
||
self[1]._from_char(char)
|
||
self[1]._bl = None
|
||
self[2]._from_char(char)
|
||
|
||
|
||
class SUPI_IMSI(Envelope):
|
||
_GEN = (
|
||
PLMN(),
|
||
BufBCD('RoutingInd', bl=16),
|
||
Uint('spare', bl=4, rep=REPR_HEX),
|
||
Uint('ProtSchemeID', bl=4, dic=_ProtSchemeID_dict),
|
||
Uint8('HNPKID'),
|
||
Alt('Output', GEN={
|
||
0 : BufBCD('MSIN'),
|
||
1 : SUCI_ECIESProfA(),
|
||
2 : SUCI_ECIESProfB()
|
||
},
|
||
DEFAULT=Buf('SUCI_UnkProf', rep=REPR_HEX),
|
||
sel=lambda self: self.get_env()[3].get_val())
|
||
)
|
||
|
||
|
||
class SUPI_NAI(UTF8String):
|
||
pass
|
||
|
||
FGSIDFMT_IMSI = 0
|
||
FGSIDFMT_NAI = 1
|
||
|
||
class FGSIDSUPI(Envelope):
|
||
_name = '5GSIDSUPI'
|
||
_GEN = (
|
||
Uint('spare', bl=1),
|
||
Uint('Fmt', val=FGSIDFMT_IMSI, bl=3, dic=FGSIDFmt_dict),
|
||
Uint('spare', bl=1),
|
||
Uint('Type', val=FGSIDTYPE_SUPI, bl=3, dic=FGSIDType_dict),
|
||
Alt('Value', GEN={
|
||
0: SUPI_IMSI(),
|
||
1: SUPI_NAI()},
|
||
DEFAULT=Buf('SUPI_Unk', rep=REPR_HEX),
|
||
sel=lambda self: self.get_env()[1].get_val()),
|
||
)
|
||
# see TS 29.503, annex C, for a human-readable representation of SUPI
|
||
|
||
|
||
class FGSIDGUTI(Envelope):
|
||
_name = '5GSIDGUTI'
|
||
_GEN = (
|
||
Uint('ind', val=0xf, bl=4, rep=REPR_HEX),
|
||
Uint('spare', bl=1),
|
||
Uint('Type', val=FGSIDTYPE_GUTI, bl=3, dic=FGSIDType_dict),
|
||
PLMN(),
|
||
Uint8('AMFRegionID'),
|
||
Uint('AMFSetID', bl=10),
|
||
Uint('AMFPtr', bl=6),
|
||
Uint32('5GTMSI', rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
# for IMEI and IMEISV
|
||
class FGSIDDigit(Envelope):
|
||
_name = '5GSIDDigit'
|
||
_GEN = (
|
||
Uint('Digit1', val=0xF, bl=4, rep=REPR_HEX),
|
||
Uint('Odd', bl=1),
|
||
Uint('Type', val=FGSIDTYPE_IMEI, bl=3, dic=FGSIDType_dict),
|
||
BufBCD('Digits', val='')
|
||
)
|
||
|
||
|
||
class FGSIDTMSI(Envelope):
|
||
_name = '5GSIDTMSI'
|
||
_GEN = (
|
||
Uint('ind', val=0xf, bl=4, rep=REPR_HEX),
|
||
Uint('spare', bl=1),
|
||
Uint('Type', val=FGSIDTYPE_TMSI, bl=3, dic=FGSIDType_dict),
|
||
Uint8('AMFRegionID'),
|
||
Uint('AMFSetID', bl=10),
|
||
Uint('AMFPtr', bl=6),
|
||
Uint32('5GTMSI', rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
class FGSIDNone(Envelope):
|
||
_name = '5GSIDNone'
|
||
_GEN = (
|
||
Uint('spare', bl=5, rep=REPR_HEX),
|
||
Uint('Type', val=FGSIDTYPE_NO, bl=3, dic=FGSIDType_dict)
|
||
)
|
||
|
||
|
||
class FGSIDMAC(Envelope):
|
||
_name = '5GSIDMAC'
|
||
_GEN = (
|
||
Uint('spare', bl=5, rep=REPR_HEX),
|
||
Uint('Type', val=FGSIDTYPE_MAC, bl=3, dic=FGSIDType_dict),
|
||
Buf('MAC', bl=48, rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
class FGSIDUnk(Envelope):
|
||
_name = '5GSIDUnk'
|
||
_GEN = (
|
||
Uint('spare', bl=5, rep=REPR_HEX),
|
||
Uint('Type', val=FGSIDTYPE_MAC, bl=3, dic=FGSIDType_dict),
|
||
Buf('unk', rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
class FGSID(Envelope):
|
||
_name = '5GSID'
|
||
|
||
# FGSIDTYPE_NO (0) -> FGSIDNone
|
||
# FGSIDTYPE_SUPI (1) -> FGSIDSUPI
|
||
# FGSIDTYPE_GUTI (2) -> FGSIDGUTI
|
||
# FGSIDTYPE_IMEI (3) -> FGSIDDigit
|
||
# FGSIDTYPE_TMSI (4) -> FGSIDTMSI
|
||
# FGSIDTYPE_IMEISV (5) -> FGSIDDigit
|
||
# FGSIDTYPE_MAC (6) -> FGSIDMAC
|
||
# (7) -> FGSIDUnk
|
||
|
||
_ID_LUT = {
|
||
FGSIDTYPE_NO : FGSIDNone(),
|
||
FGSIDTYPE_SUPI : FGSIDSUPI(),
|
||
FGSIDTYPE_GUTI : FGSIDGUTI(),
|
||
FGSIDTYPE_IMEI : FGSIDDigit(),
|
||
FGSIDTYPE_TMSI : FGSIDTMSI(),
|
||
FGSIDTYPE_IMEISV : FGSIDDigit(),
|
||
FGSIDTYPE_MAC : FGSIDMAC(),
|
||
7 : FGSIDUnk()
|
||
}
|
||
|
||
def set_val(self, vals):
|
||
if isinstance(vals, dict) and 'Type' in vals:
|
||
type = vals['Type']
|
||
del vals['Type']
|
||
self.encode(type, **vals)
|
||
else:
|
||
Envelope.set_val(self, vals)
|
||
|
||
def _set_content(self, type):
|
||
if 'Type' not in self._by_name:
|
||
# need to create the appropriate content
|
||
for elt in self._ID_LUT[type]:
|
||
self.append(elt.clone())
|
||
elif self['Type'].get_val() != type:
|
||
# need to restructure the content
|
||
self._content.clear()
|
||
self._by_id.clear()
|
||
self._by_name.clear()
|
||
for elt in self._ID_LUT[type]:
|
||
self.append(elt.clone())
|
||
|
||
def encode(self, type, **kwargs):
|
||
"""sets the 5GS mobile identity with given type
|
||
|
||
The given types correspond to the following classes:
|
||
FGSIDTYPE_NO (0) -> FGSIDNone
|
||
FGSIDTYPE_SUPI (1) -> FGSIDSUPI
|
||
FGSIDTYPE_GUTI (2) -> FGSIDGUTI
|
||
FGSIDTYPE_IMEI (3) -> FGSIDDigit
|
||
FGSIDTYPE_TMSI (4) -> FGSIDTMSI
|
||
FGSIDTYPE_IMEISV (5) -> FGSIDDigit
|
||
FGSIDTYPE_MAC (6) -> FGSIDMAC
|
||
7 (undefined) -> FGSIDUnk
|
||
"""
|
||
if not isinstance(type, integer_types) or not 0 <= type <= 7:
|
||
raise(PycrateErr('invalid 5GS identity type: %r' % type))
|
||
# set the appropriate content
|
||
self._set_content(type)
|
||
# pass the value to encode
|
||
Envelope.set_val(self, kwargs)
|
||
|
||
def _from_char(self, char):
|
||
if self.get_trans():
|
||
return
|
||
# get the type and set the appropriate content
|
||
type = char.to_uint(8) & 0x7
|
||
self._set_content(type)
|
||
Envelope._from_char(self, char)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GS network feature support
|
||
# TS 24.501, 9.11.3.5
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class FGSNetFeat(Envelope):
|
||
_name = '5GSNetFeat'
|
||
_GEN = (
|
||
Uint('MPSI', bl=1),
|
||
Uint('IWK_N26', bl=1),
|
||
Uint('EMF', bl=1),
|
||
Uint('EMC', bl=3),
|
||
Uint('IMS-VoPS-N3GPP', bl=1),
|
||
Uint('IMS-VoPS-3GPP', bl=1), # end of octet 1
|
||
Uint('5G-LCS', bl=1),
|
||
Uint('5G-UP-CIoT', bl=1),
|
||
Uint('5G-HC-CP-CIoT', bl=1),
|
||
Uint('N3Data', bl=1),
|
||
Uint('5G-CP-CIoT', bl=1),
|
||
Uint('RestrictEC', bl=1),
|
||
Uint('MCSI', bl=1),
|
||
Uint('EMCN3', bl=1), # end of octet 2
|
||
Buf('spare', val=b'', rep=REPR_HEX)
|
||
)
|
||
|
||
def _from_char(self, char):
|
||
if self.get_trans():
|
||
return
|
||
l = char.len_bit()
|
||
if l <= 8:
|
||
# disable all elements after bit l
|
||
self.disable_from('5G-LCS')
|
||
elif l > 16:
|
||
# enables some spare bits at the end
|
||
self[-1]._bl = l-16
|
||
Envelope._from_char(self, char)
|
||
|
||
def disable_from(self, ind):
|
||
"""disables all elements from index `ind' excluded (element offset or name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = self._by_name.index(ind)
|
||
[e.set_trans(True) for e in self._content[ind:]]
|
||
|
||
def enable_upto(self, ind):
|
||
"""enables all elements up to index `ind' included (element offset or name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = 1 + self._by_name.index(ind)
|
||
[e.set_trans(False) for e in self._content[:ind]]
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GS registration result
|
||
# TS 24.501, 9.11.3.6
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_FGSRegResult_dict = {
|
||
1 : '3GPP access',
|
||
2 : 'Non-3GPP access',
|
||
3 : '3GPP access and non-3GPP access',
|
||
7 : _str_reserved
|
||
}
|
||
|
||
|
||
class FGSRegResult(Envelope):
|
||
_name = '5GSRegResult'
|
||
_GEN = (
|
||
Uint('spare', bl=3),
|
||
Uint('NSSAAPerformed', bl=1),
|
||
Uint('SMSAllowed', bl=1),
|
||
Uint('Value', bl=3, dic=_FGSRegResult_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GS registration type
|
||
# TS 24.501, 9.11.3.7
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_FOR_dict = {
|
||
0 : 'No follow-on request pending',
|
||
1 : 'Follow-on request pending'
|
||
}
|
||
|
||
_FGSRegType_dict = {
|
||
1 : 'initial registration',
|
||
2 : 'mobility registration updating',
|
||
3 : 'periodic registration updating',
|
||
4 : 'emergency registration',
|
||
7 : _str_reserved
|
||
}
|
||
|
||
class FGSRegType(Envelope):
|
||
_name = '5GSRegType'
|
||
_GEN = (
|
||
Uint('FOR', bl=1, dic=_FOR_dict),
|
||
Uint('Value', bl=3, dic=_FGSRegType_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GS tracking area identity
|
||
# TS 24.501, 9.11.3.8
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class FGSTAI(Envelope):
|
||
_name = '5GSTAI'
|
||
_GEN = (
|
||
PLMN(),
|
||
Uint24('TAC', rep=REPR_HEX)
|
||
)
|
||
|
||
encode = Envelope.set_val
|
||
|
||
def decode(self):
|
||
return (self[0].decode(), self[1].get_val())
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GS tracking area identity list
|
||
# TS 24.501, 9.11.3.9
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_PTAIListType_dict = {
|
||
0 : 'list of TACs belonging to one PLMN, with non-consecutive TAC values',
|
||
1 : 'list of TACs belonging to one PLMN, with consecutive TAC values',
|
||
2 : 'list of TAIs belonging to different PLMNs'
|
||
}
|
||
|
||
|
||
class _PTAIList0(Envelope):
|
||
"""List of non-consecutive TACs belonging to one PLMN
|
||
"""
|
||
|
||
_GEN = (
|
||
Uint('Num', bl=5),
|
||
PLMN(),
|
||
Array('TACs', GEN=Uint24('TAC'))
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: max(0, self[2].get_num()-1))
|
||
self[2].set_numauto(lambda: self[0].get_val()+1)
|
||
|
||
def get_tai(self):
|
||
plmn = self['PLMN'].decode()
|
||
return set([(plmn, tac) for tac in self['TACs'].get_val()])
|
||
|
||
|
||
class _PTAIList1(Envelope):
|
||
"""List of consecutive TACs belonging to one PLMN
|
||
"""
|
||
|
||
_GEN = (
|
||
Uint('Num', bl=5),
|
||
PLMN(),
|
||
Uint24('TAC1'),
|
||
)
|
||
|
||
def get_tai(self):
|
||
plmn, tac1 = self['PLMN'].decode(), self['TAC1'].get_val()
|
||
return set([(plmn, tac1 + i) for i in range(self['Num'].get_val() + 1)])
|
||
|
||
|
||
class _PTAIList2(Envelope):
|
||
"""List of TAI belonging to different PLMNs
|
||
"""
|
||
|
||
_GEN = (
|
||
Uint('Num', bl=5),
|
||
Sequence('TAIs', GEN=FGSTAI())
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: max(0, self[1].get_num()-1))
|
||
self[1].set_numauto(lambda: self[0].get_val()+1)
|
||
|
||
def get_tai(self):
|
||
return set([tai.decode() for tai in self['TAIs']])
|
||
|
||
|
||
class FGSPTAIList(Envelope):
|
||
_name = '5GSPTAIList'
|
||
_GEN = (
|
||
Uint('spare', bl=1),
|
||
Uint('Type', bl=2, dic=_PTAIListType_dict),
|
||
Alt('PTAI', GEN={
|
||
0: _PTAIList0('PTAIList0'),
|
||
1: _PTAIList1('PTAIList1'),
|
||
2: _PTAIList2('PTAIList2')
|
||
},
|
||
DEFAULT=_PTAIList1('PTAIList1'),
|
||
sel=lambda self: self.get_env()['Type'].get_val())
|
||
)
|
||
|
||
def get_tai(self):
|
||
return self['PTAI'].get_alt().get_tai()
|
||
|
||
|
||
class FGSTAIList(Sequence):
|
||
_name = '5GSTAIList'
|
||
_GEN = FGSPTAIList()
|
||
|
||
def get_tai(self):
|
||
tai = set()
|
||
for tl in self:
|
||
tai.update(tl.get_tai())
|
||
return tai
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GS update type
|
||
# TS 24.501, 9.11.3.9A
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class FGSUpdateType(Envelope):
|
||
_name = '5GSUpdateType'
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('EPS-PNB-CIoT', bl=2),
|
||
Uint('5GS-PNB-CIoT', bl=2),
|
||
Uint('NG-RAN-RCU', bl=1),
|
||
Uint('SMSRequested', bl=1)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Access type
|
||
# TS 24.501, 9.11.3.11
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class AccessType(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('Value', bl=2, dic={1:'3GPP access', 2:'non-3GPP access'})
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Additional 5G security information
|
||
# TS 24.501, 9.11.3.12
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class Add5GSecInfo(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=6, rep=REPR_HEX),
|
||
Uint('RINMR', bl=1, dic={
|
||
0:'retransmission of the initial NAS message not requested',
|
||
1:'retransmission of the initial NAS message requested'}),
|
||
Uint('HDP', bl=1, dic={0:'K_AMF derivation not required', 1:'K_AMF derivation required'})
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Allowed PDU session status
|
||
# TS 24.501, 9.11.3.13
|
||
#------------------------------------------------------------------------------#
|
||
# actually identical to PDU session status in .44
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Configuration update indication
|
||
# TS 24.501, 9.11.3.18
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class ConfigUpdateInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('RED', bl=1, dic={0:'registration not requested', 1:'registration requested'}),
|
||
Uint('ACK', bl=1, dic={0:'ACK not requested', 1:'ACK requested'})
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# De-registration type
|
||
# TS 24.501, 9.11.3.20
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_DeregAccessType_dict = {
|
||
1 : '3GPP access',
|
||
2 : 'Non-3GPP access',
|
||
3 : '3GPP access and non-3GPP access'
|
||
}
|
||
|
||
class DeregistrationType(Envelope):
|
||
_GEN = (
|
||
Uint('SwitchOff', bl=1, dic={0:'normal de-registration', 1:'switch off'}),
|
||
Uint('ReregistrationRequired', bl=1),
|
||
Uint('AccessType', val=1, bl=2, dic=_DeregAccessType_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# LADN indication
|
||
# TS 24.501, 9.11.3.29
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class LADNInd(Sequence):
|
||
_GEN = DNN()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# LADN information
|
||
# TS 24.501, 9.11.3.30
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class LADN(Envelope):
|
||
_GEN = (
|
||
DNN(),
|
||
FGSTAIList()
|
||
)
|
||
|
||
|
||
class LADNInfo(Sequence):
|
||
_GEN = LADN()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# MICO indication
|
||
# TS 24.501, 9.11.3.31
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class MICOInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('SPRTI', bl=1),
|
||
Uint('RAAI', bl=1)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# NAS security algorithms
|
||
# TS 24.501, 9.11.3.34
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_NASCiphAlgo_dict = {
|
||
0 : '5G encryption algorithm 5G-EA0 (null)',
|
||
1 : '5G encryption algorithm 128-5G-EA1 (SNOW)',
|
||
2 : '5G encryption algorithm 128-5G-EA2 (AES)',
|
||
3 : '5G encryption algorithm 128-5G-EA3 (ZUC)',
|
||
4 : '5G encryption algorithm 5G-EA4',
|
||
5 : '5G encryption algorithm 5G-EA5',
|
||
6 : '5G encryption algorithm 5G-EA6',
|
||
7 : '5G encryption algorithm 5G-EA7'
|
||
}
|
||
|
||
_NASIntegAlgo_dict = {
|
||
0 : '5G integrity algorithm 5G-IA0 (null)',
|
||
1 : '5G integrity algorithm 128-5G-IA1 (SNOW)',
|
||
2 : '5G integrity algorithm 128-5G-IA2 (AES)',
|
||
3 : '5G integrity algorithm 128-5G-IA3 (ZUC)',
|
||
4 : '5G integrity algorithm 5G-IA4',
|
||
5 : '5G integrity algorithm 5G-IA5',
|
||
6 : '5G integrity algorithm 5G-IA6',
|
||
7 : '5G integrity algorithm 5G-IA7'
|
||
}
|
||
|
||
class NASSecAlgo(Envelope):
|
||
_GEN = (
|
||
Uint('CiphAlgo', bl=4, dic=_NASCiphAlgo_dict),
|
||
Uint('IntegAlgo', bl=4, dic=_NASIntegAlgo_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Network slicing indication
|
||
# TS 24.501, 9.11.3.36
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class NetSlicingInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('DCNI', bl=1, dic={
|
||
0: 'requested NSSAI not created from default configured NSSAI',
|
||
1: 'requested NSSAI created from default configured NSSAI'}),
|
||
Uint('NSSCI', bl=1, dic={
|
||
0: 'network slicing subscription not changed',
|
||
1: 'network slicing subscription changed'})
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# NSSAI
|
||
# TS 24.501, 9.11.3.37
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class NSSAI(Sequence):
|
||
_GEN = L_SNSSAI()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# NSSAI inclusion mode
|
||
# TS 24.501, 9.11.3.37A
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class NSSAIInclMode(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('Value', bl=2, dic={0:'A', 1:'B', 2:'C', 3:'D'})
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Operator-defined access category definitions
|
||
# TS 24.501, 9.11.3.38
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_CriteriaType_dict = {
|
||
0 : 'DNN',
|
||
1 : 'OS Id + OS App Id',
|
||
2 : 'S-NSSAI'
|
||
}
|
||
|
||
|
||
class _CritDNNs(Envelope):
|
||
_GEN = (
|
||
Uint8('Cnt'),
|
||
Array('DNNs', GEN=DNN())
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: self[1].get_num())
|
||
self[1].set_numauto(lambda: self[0].get_val())
|
||
|
||
|
||
class _CritOSAppId(Envelope):
|
||
_GEN = (
|
||
Buf('OS_UUID', bl=128, rep=REPR_HEX),
|
||
Uint8('LenAppId'),
|
||
Buf('AppId')
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[1].set_valauto(lambda: self[2].get_len())
|
||
self[2].set_blauto(lambda: self[1].get_val()<<3)
|
||
|
||
|
||
class _CritOSAppIds(Envelope):
|
||
_GEN = (
|
||
Uint8('Cnt'),
|
||
Array('OSAppIds', GEN=_CritOSAppId('OSAppId'))
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: self[1].get_num())
|
||
self[1].set_numauto(lambda: self[0].get_val())
|
||
|
||
|
||
class _CritSNSSAI(Envelope):
|
||
_GEN = (
|
||
Uint8('Cnt'),
|
||
Sequence('SNSSAIs', GEN=L_SNSSAI())
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: self[1].get_num())
|
||
self[1].set_numauto(lambda: self[0].get_val())
|
||
|
||
|
||
class CriteriaComp(Envelope):
|
||
_GEN = (
|
||
Uint8('Type', dic=_CriteriaType_dict),
|
||
Alt('Crit', GEN={
|
||
0 : _CritDNNs('CompDNN'),
|
||
1 : _CritOSAppIds('CompOSAppId'),
|
||
2 : _CritSNSSAI('CompNSSAI')},
|
||
DEFAULT=Buf('CompUnk', rep=REPR_HEX),
|
||
sel=lambda self: self.get_env()['Type'].get_val()
|
||
)
|
||
)
|
||
|
||
|
||
class OperatorAccessCatDef(Envelope):
|
||
_GEN = (
|
||
Uint8('Len'),
|
||
Uint8('Precedence'),
|
||
Uint('PSAC', bl=1),
|
||
Uint('spare', bl=2),
|
||
Uint('AccessCatNum', bl=5),
|
||
Uint8('LenCriteria'),
|
||
Sequence('Criteria', GEN=CriteriaComp()),
|
||
Envelope('StdAccessCat', GEN=(
|
||
Uint('spare', bl=3),
|
||
Uint('Value', bl=5)),
|
||
) # optional, depends on PSAC (Presence of Std Access Cat...)
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self['Len'].set_valauto(lambda: 3 + self['LenCriteria'].get_val() if self['StdAccessCat'].get_trans() \
|
||
else 4 + self['LenCriteria'].get_val())
|
||
self['LenCriteria'].set_valauto(lambda: self['Criteria'].get_len())
|
||
self['Criteria'].set_blauto(lambda: self['LenCriteria'].get_val()<<3)
|
||
self['StdAccessCat'].set_transauto(lambda: False if self['PSAC'].get_val() else True)
|
||
|
||
|
||
class OperatorAccessCatDefs(Sequence):
|
||
_GEN = OperatorAccessCatDef()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Payload container type
|
||
# TS 24.501, 9.11.3.40
|
||
#------------------------------------------------------------------------------#
|
||
|
||
PayloadContainerType_dict = {
|
||
1 : 'N1 SM information',
|
||
2 : 'SMS',
|
||
3 : 'LTE Positioning Protocol message container',
|
||
4 : 'SOR transparent container',
|
||
5 : 'UE policy container',
|
||
6 : 'UE parameters update transparent container',
|
||
7 : 'Location services message container',
|
||
8 : 'CIoT user data container',
|
||
15: 'Multiple payloads'
|
||
}
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# PDU session identity 2
|
||
# TS 24.501, 9.11.3.41
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class PDUSessID(Uint8):
|
||
_dic = {0: 'no PDU session ID assigned'}
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Request type
|
||
# TS 24.501, 9.11.3.47
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_RequestType_dict = {
|
||
1 : 'initial request',
|
||
2 : 'existing PDU session',
|
||
3 : 'initial emergency request',
|
||
4 : 'existing emergency PDU session',
|
||
5 : 'modification request',
|
||
6 : 'MA PDU request',
|
||
7 : _str_reserved
|
||
}
|
||
|
||
class RequestType(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=1),
|
||
Uint('Value', bl=3, dic=_RequestType_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Payload container
|
||
# TS 24.501, 9.11.3.39
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_PayContOptType_dict = {
|
||
12 : 'PDU session ID',
|
||
24 : 'Additional information',
|
||
58 : '5GMM cause',
|
||
37 : 'Back-off timer value',
|
||
59 : 'Old PDU session ID',
|
||
80 : 'Request type',
|
||
22 : 'S-NSSAI',
|
||
25 : 'DNN'
|
||
}
|
||
|
||
|
||
class _PayContOpt(Envelope):
|
||
_GEN = (
|
||
Uint8('Type', dic=_PayContOptType_dict),
|
||
Uint8('Len'),
|
||
Alt('Val', GEN={
|
||
12 : PDUSessID(),
|
||
24 : Buf('AdditionalInfo', rep=REPR_HEX),
|
||
58 : FGMMCause(),
|
||
37 : GPRSTimer3('BackOffTimer'),
|
||
59 : PDUSessID('OldPDUSessID'),
|
||
80 : Uint8('RequestType', dic=_RequestType_dict),
|
||
22 : SNSSAI(),
|
||
25 : Buf('DNN')
|
||
},
|
||
DEFAULT=Buf('Val'),
|
||
sel=lambda self: self.get_env()[0].get_val()
|
||
)
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[1].set_valauto(lambda: self[2].get_len())
|
||
self[2].set_blauto(lambda: self[1].get_val()<<3)
|
||
|
||
|
||
class _PayContEntry(Envelope):
|
||
_GEN = (
|
||
Uint16('Len'),
|
||
Uint('OptNum', bl=4),
|
||
Uint('Type', bl=4, dic=PayloadContainerType_dict),
|
||
Sequence('Opts', GEN=_PayContOpt('Opt')),
|
||
Buf('Cont', val=b'', rep=REPR_HEX)
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: 1 + self[3].get_len() + self[4].get_len())
|
||
self[1].set_valauto(lambda: self[3].get_num())
|
||
self[3].set_numauto(lambda: self[1].get_val())
|
||
self[4].set_blauto(lambda: (self[0].get_val()-1-self[3].get_len())<<3)
|
||
|
||
|
||
class PayloadContainerMult(Envelope):
|
||
_GEN = (
|
||
Uint8('Num'),
|
||
Sequence('Entries', GEN=_PayContEntry('Entry'))
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: self[1].get_num())
|
||
self[1].set_numauto(lambda: self[0].get_val())
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# PDU session reactivation result error cause
|
||
# TS 24.501, 9.11.3.42
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class PDUSessReactResultErr(Array):
|
||
_GEN = Envelope('PDUSessErr', GEN=(
|
||
Uint8('PSI'),
|
||
Uint8('Cause', dic=_FGMMCause_dict))
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# PDU session status
|
||
# TS 24.501, 9.11.3.44
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class PDUSessStat(Envelope):
|
||
_GEN = (
|
||
Uint('PSI_7', bl=1),
|
||
Uint('PSI_6', bl=1),
|
||
Uint('PSI_5', bl=1),
|
||
Uint('PSI_4', bl=1),
|
||
Uint('PSI_3', bl=1),
|
||
Uint('PSI_2', bl=1),
|
||
Uint('PSI_1', bl=1),
|
||
Uint('PSI_0', bl=1),
|
||
Uint('PSI_15', bl=1),
|
||
Uint('PSI_14', bl=1),
|
||
Uint('PSI_13', bl=1),
|
||
Uint('PSI_12', bl=1),
|
||
Uint('PSI_11', bl=1),
|
||
Uint('PSI_10', bl=1),
|
||
Uint('PSI_9', bl=1),
|
||
Uint('PSI_8', bl=1),
|
||
Buf('spare', val=b'', rep=REPR_HEX)
|
||
)
|
||
|
||
def _from_char(self, char):
|
||
if self.get_trans():
|
||
return
|
||
l = char.len_bit()
|
||
if l <= 16:
|
||
# disable all elements after bit l
|
||
self.disable_from(l)
|
||
elif l > 16:
|
||
# enables some spare bits at the end
|
||
self[-1]._bl = l-16
|
||
Envelope._from_char(self, char)
|
||
|
||
def disable_from(self, ind):
|
||
"""disables all elements from index `ind' excluded (integer -bit offset-
|
||
or element name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = self._by_name.index(ind)
|
||
[e.set_trans(True) for e in self._content[ind:]]
|
||
|
||
def enable_upto(self, ind):
|
||
"""enables all elements up to index `ind' included (integer -bit offset-
|
||
or element name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = 1 + self._by_name.index(ind)
|
||
[e.set_trans(False) for e in self._content[:ind]]
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Rejected NSSAI
|
||
# TS 24.501, 9.11.3.46
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_RejectedSNSSAICause_dict = {
|
||
0 : 'S-NSSAI not available in the current PLMN or SNPN',
|
||
1 : 'S-NSSAI not available in the current registration area',
|
||
2 : 'Network slice specific authentication and authorization pending for the S-NSSAI'
|
||
}
|
||
|
||
class RejectedSNSSAI(Envelope):
|
||
_GEN = (
|
||
Uint('Len', bl=4),
|
||
Uint('Cause', bl=4, dic=_RejectedSNSSAICause_dict),
|
||
SNSSAI()
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: self[2].get_len())
|
||
self[2].set_blauto(lambda: self[0].get_val()<<3)
|
||
|
||
|
||
class RejectedNSSAI(Sequence):
|
||
_GEN = RejectedSNSSAI()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Service area list
|
||
# TS 24.501, 9.11.3.49
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class _PTAIList3(Envelope):
|
||
"""All TAI belonging to a given PLMN
|
||
"""
|
||
|
||
_GEN = (
|
||
Uint('Num', val=0, bl=5),
|
||
PLMN(),
|
||
)
|
||
|
||
def get_tai(self):
|
||
return {(self['PLMN'].decode(), None), }
|
||
|
||
|
||
_AllowedPSAList_dict = {
|
||
0: 'TAIs in the list are in the allowed area',
|
||
1: 'TAIs in the list are in the non-allowed area'
|
||
}
|
||
|
||
|
||
class PSAList(Envelope):
|
||
_GEN = (
|
||
Uint('Allowed', bl=1, dic=_AllowedPSAList_dict),
|
||
Uint('Type', bl=2, dic=_PTAIListType_dict),
|
||
Alt('PTAI', GEN={
|
||
0: _PTAIList0('PTAIList0'),
|
||
1: _PTAIList1('PTAIList1'),
|
||
2: _PTAIList2('PTAIList2'),
|
||
3: _PTAIList3('PTAIList3')
|
||
},
|
||
DEFAULT=_PTAIList1('PTAIList3'),
|
||
sel=lambda self: self.get_env()['Type'].get_val())
|
||
)
|
||
|
||
def get_tai(self):
|
||
return self['PTAI'].get_alt().get_tai()
|
||
|
||
|
||
class SAList(Sequence):
|
||
_GEN = FGSPTAIList()
|
||
|
||
def get_tai(self):
|
||
tai = set()
|
||
for tl in self:
|
||
tai.update(tl.get_tai())
|
||
return tai
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Service type
|
||
# TS 24.501, 9.11.3.50
|
||
#------------------------------------------------------------------------------#
|
||
|
||
ServiceType_dict = {
|
||
0 : 'signalling',
|
||
1 : 'data',
|
||
2 : 'mobile terminated services',
|
||
3 : 'emergency services',
|
||
4 : 'emergency services fallback',
|
||
5 : 'high priority access',
|
||
6 : 'elevated signalling',
|
||
7 : 'unused - signalling',
|
||
8 : 'unused - signalling',
|
||
9 : 'unused - data',
|
||
10 : 'unused - data',
|
||
11 : 'unused - data'
|
||
}
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# SMS indication
|
||
# TS 24.501, 9.11.3.50A
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class SMSInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=3),
|
||
Uint('Value', bl=1, dic={0:'SMS over NAS not available', 1:'SMS over NAS available'})
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# SOR transparent container
|
||
# TS 24.501, 9.11.3.51
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_SORDataType_dict = {
|
||
0: 'steering of roaming information',
|
||
1: 'acknowledgement of successful reception of the steering of roaming information'
|
||
}
|
||
|
||
_SORListInd_dict = {
|
||
0: 'no change in the list of operator controlled PLMN',
|
||
1: 'list of preferred PLMN/access technology combinations provided'
|
||
}
|
||
|
||
_SORListType_dict = {
|
||
0: 'secured packet',
|
||
1: 'list of PLMN ID and access technology'
|
||
}
|
||
|
||
_SORAck_dict = {
|
||
0: 'Ack not requested',
|
||
1: 'Ack requested'
|
||
}
|
||
|
||
|
||
class SORHeader(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=4, rep=REPR_HEX),
|
||
Uint('ACK', bl=1, dic=_SORAck_dict),
|
||
Uint('ListType', bl=1, dic=_SORListType_dict),
|
||
Uint('ListInd', bl=1, dic=_SORListInd_dict),
|
||
Uint('DataType', bl=1, dic=_SORDataType_dict)
|
||
)
|
||
|
||
|
||
class _SORTransCont00(Envelope):
|
||
_GEN = (
|
||
Buf('SOR_MACI_AUSF', bl=128, rep=REPR_HEX),
|
||
Uint16('CntSOR'),
|
||
Buf('SecuredPkt', rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
class _SORTransCont01(Envelope):
|
||
_GEN = (
|
||
Buf('SOR_MACI_AUSF', bl=128, rep=REPR_HEX),
|
||
Uint16('CntSOR'),
|
||
Sequence('PLMNATList', GEN=Envelope('PLMNAT', GEN=(
|
||
PLMN(),
|
||
Uint16('AccessTechno')))
|
||
)
|
||
)
|
||
|
||
|
||
class _SORTransCont1(Envelope):
|
||
_GEN = (
|
||
Buf('SOR_MACI_UE', bl=128, rep=REPR_HEX),
|
||
)
|
||
|
||
|
||
def get_sor_types(cont):
|
||
hdr = cont.get_env()['SORHeader']
|
||
return hdr['DataType'].get_val(), hdr['ListType'].get_val()
|
||
|
||
|
||
class SORTransparentContainer(Envelope):
|
||
_GEN = (
|
||
SORHeader(),
|
||
Alt('Cont', GEN={
|
||
(0, 0): _SORTransCont00('SORSecuredPkt'),
|
||
(0, 1): _SORTransCont01('SORPLMNList'),
|
||
(1, 0): _SORTransCont1('SORACK'),
|
||
(1, 1): _SORTransCont1('SORACK')},
|
||
sel=lambda self: get_sor_types(self)
|
||
)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# UE security capability
|
||
# TS 24.501, 9.11.3.54
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class UESecCap(Envelope):
|
||
|
||
ENV_SEL_TRANS = False
|
||
|
||
_GEN = (
|
||
Uint('5G-EA0', bl=1),
|
||
Uint('5G-EA1_128', bl=1),
|
||
Uint('5G-EA2_128', bl=1),
|
||
Uint('5G-EA3_128', bl=1),
|
||
Uint('5G-EA4', bl=1),
|
||
Uint('5G-EA5', bl=1),
|
||
Uint('5G-EA6', bl=1),
|
||
Uint('5G-EA7', bl=1),
|
||
Uint('5G-IA0', bl=1),
|
||
Uint('5G-IA1_128', bl=1),
|
||
Uint('5G-IA2_128', bl=1),
|
||
Uint('5G-IA3_128', bl=1),
|
||
Uint('5G-IA4', bl=1),
|
||
Uint('5G-IA5', bl=1),
|
||
Uint('5G-IA6', bl=1),
|
||
Uint('5G-IA7', bl=1), # end of octet 2 (mandatory part)
|
||
Uint('EEA0', bl=1),
|
||
Uint('EEA1_128', bl=1),
|
||
Uint('EEA2_128', bl=1),
|
||
Uint('EEA3_128', bl=1),
|
||
Uint('EEA4', bl=1),
|
||
Uint('EEA5', bl=1),
|
||
Uint('EEA6', bl=1),
|
||
Uint('EEA7', bl=1),
|
||
Uint('EIA0', bl=1),
|
||
Uint('EIA1_128', bl=1),
|
||
Uint('EIA2_128', bl=1),
|
||
Uint('EIA3_128', bl=1),
|
||
Uint('EIA4', bl=1),
|
||
Uint('EIA5', bl=1),
|
||
Uint('EIA6', bl=1),
|
||
Uint('EIA7', bl=1), # end of octet 4 (optional part)
|
||
Buf('spare', val=b'', rep=REPR_HEX)
|
||
)
|
||
|
||
def _from_char(self, char):
|
||
if self.get_trans():
|
||
return
|
||
l = char.len_bit()
|
||
if l <= 32:
|
||
# disable all elements after bit l
|
||
self.disable_from(l)
|
||
elif l > 32:
|
||
# enables some spare bits at the end
|
||
self[-1]._bl = l-32
|
||
Envelope._from_char(self, char)
|
||
|
||
def disable_from(self, ind):
|
||
"""disables all elements from index `ind' excluded (integer -bit offset-
|
||
or element name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = self._by_name.index(ind)
|
||
[e.set_trans(True) for e in self._content[ind:]]
|
||
|
||
def enable_upto(self, ind):
|
||
"""enables all elements up to index `ind' included (integer -bit offset-
|
||
or element name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = 1 + self._by_name.index(ind)
|
||
[e.set_trans(False) for e in self._content[:ind]]
|
||
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# UE's usage setting
|
||
# TS 24.501, 9.11.3.55
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class UEUsage(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=7, rep=REPR_HEX),
|
||
Uint('Value', bl=1, dic={0:'voice centric', 1:'data centric'})
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# UE status
|
||
# TS 24.501, 9.11.3.56
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class UEStatus(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=6, rep=REPR_HEX),
|
||
Uint('N1ModeReg', bl=1, dic={0:'UE not in 5GMM-REGISTERED state', 1:'UE in 5GMM-REGISTERED state'}),
|
||
Uint('S1ModeReg', bl=1, dic={0:'UE not in EMM-REGISTERED state', 1:'UE in EMM-REGISTERED state'})
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Uplink data status
|
||
# TS 24.501, 9.11.3.57
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class ULDataStat(PDUSessStat):
|
||
pass
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# MA PDU session information
|
||
# TS 24.501, 9.11.3.63
|
||
#------------------------------------------------------------------------------#
|
||
|
||
MAPDUSessInfo_dict = {
|
||
1 : 'MA PDU session network upgrade is allowed'
|
||
}
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# CAG information list
|
||
# TS 24.501, 9.11.3.64
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class CAGInfo(Envelope):
|
||
_GEN = (
|
||
Uint8('Len'),
|
||
PLMN(),
|
||
Array('CAGIDList', GEN=Uint32('CAGID', rep=REPR_HEX))
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[0].set_valauto(lambda: 3 + self[2].get_len())
|
||
self[2].set_blauto(lambda: (self[0].get_val()-3)<<3)
|
||
|
||
|
||
class CAGInfoList(Sequence):
|
||
_GEN = CAGInfo()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Control plane service type
|
||
# TS 24.501, 9.11.3.65
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_CtrlPlaneServType_dict = {
|
||
0 : 'mobile originating request',
|
||
1 : 'mobile terminating request',
|
||
2 : 'data',
|
||
3 : 'unused - mobile originating request',
|
||
4 : 'unused - mobile originating request',
|
||
5 : 'unused - mobile originating request',
|
||
6 : 'unused - mobile originating request',
|
||
7 : 'unused - mobile originating request'
|
||
}
|
||
|
||
class CtrlPlaneServiceType(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=1),
|
||
Uint('Value', bl=3, dic=_CtrlPlaneServType_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# CIoT small data container
|
||
# TS 24.501, 9.11.3.67
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_CIoTDataType_dict = {
|
||
1 : 'Control plane user data',
|
||
2 : 'SMS'
|
||
}
|
||
|
||
_CIoTDDX_dict = {
|
||
0 : 'No information available',
|
||
1 : 'No further uplink or downlink data transmission subsequent to the uplink data transmission is expected',
|
||
2 : 'Only a single downlink data transmission and no further uplink data transmission subsequent to the uplink data transmission is expected',
|
||
3 : _str_reserved
|
||
}
|
||
|
||
|
||
class CIoTSmallDataContainer(Envelope):
|
||
_GEN = (
|
||
Uint('DataType', bl=3, dic=_CIoTDataType_dict),
|
||
Uint('DDX', bl=2, dic=_CIoTDDX_dict),
|
||
Uint('PDUSessID', bl=3, dic={0:'No PDU session identity assigned'}),
|
||
Buf('Data', rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# UE radio capability ID
|
||
# TS 24.501, 9.11.3.68
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class UERadioCapID(BufBCD):
|
||
pass
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# UE radio capability ID deletion indication
|
||
# TS 24.501, 9.11.3.69
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_DelRequest_dict = {
|
||
0 : 'UE radio capability ID deletion not requested',
|
||
1 : 'Network-assigned UE radio capability IDs deletion requested'
|
||
}
|
||
|
||
class UERadioCapIDDelInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=1),
|
||
Uint('DelRequest', bl=3, dic=_DelRequest_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GSM capability
|
||
# TS 24.501, 9.11.4.1
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class FGSMCap(Envelope):
|
||
_name = '5GSMCap'
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('TPMIC', bl=1),
|
||
Uint('MPTCP', bl=1),
|
||
Uint('ATS-LL', bl=1),
|
||
Uint('EPT-S1', bl=1),
|
||
Uint('MH6-PDU', bl=1),
|
||
Uint('RQoS', bl=1),
|
||
Buf('spare', val=b'', rep=REPR_HEX)
|
||
)
|
||
|
||
#def _from_char(self, char):
|
||
# Envelope._from_char(self, char)
|
||
|
||
def disable_from(self, ind):
|
||
"""disables all elements from index `ind' excluded (integer -bit offset-
|
||
or element name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = self._by_name.index(ind)
|
||
[e.set_trans(True) for e in self._content[ind:]]
|
||
|
||
def enable_upto(self, ind):
|
||
"""enables all elements up to index `ind' included (integer -bit offset-
|
||
or element name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = 1 + self._by_name.index(ind)
|
||
[e.set_trans(False) for e in self._content[:ind]]
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GSM cause
|
||
# TS 24.501, 9.11.4.2
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_FGSMCause_dict = {
|
||
8 : 'Operator determined barring',
|
||
26 : 'Insufficient resources',
|
||
27 : 'Missing or unknown DNN',
|
||
28 : 'Unknown PDU session type',
|
||
29 : 'User authentication or authorization failed',
|
||
31 : 'Request rejected, unspecified',
|
||
32 : 'Service option not supported',
|
||
33 : 'Requested service option not subscribed',
|
||
34 : 'Service option temporarily out of order',
|
||
35 : 'PTI already in use',
|
||
36 : 'Regular deactivation',
|
||
38 : 'Network failure',
|
||
39 : 'Reactivation requested',
|
||
41 : 'Semantic error in the TFT operation',
|
||
42 : 'Syntactical error in the TFT operation',
|
||
43 : 'Invalid PDU session identity',
|
||
44 : 'Semantic errors in packet filter(s)',
|
||
45 : 'Syntactical error in packet filter(s)',
|
||
46 : 'Out of LADN service area',
|
||
47 : 'PTI mismatch',
|
||
50 : 'PDU session type IPv4 only allowed',
|
||
51 : 'PDU session type IPv6 only allowed',
|
||
54 : 'PDU session does not exist',
|
||
67 : 'Insufficient resources for specific slice and DNN',
|
||
68 : 'Not supported SSC mode',
|
||
69 : 'Insufficient resources for specific slice',
|
||
70 : 'Missing or unknown DNN in a slice',
|
||
81 : 'Invalid PTI value',
|
||
82 : 'Maximum data rate per UE for user-plane integrity protection is too low',
|
||
83 : 'Semantic error in the QoS operation',
|
||
84 : 'Syntactical error in the QoS operation',
|
||
85 : 'Invalid mapped EPS bearer identity',
|
||
95 : 'Semantically incorrect message',
|
||
96 : 'Invalid mandatory information',
|
||
97 : 'Message type non-existent or not implemented',
|
||
98 : 'Message type not compatible with the protocol state',
|
||
99 : 'Information element non-existent or not implemented',
|
||
100 : 'Conditional IE error',
|
||
101 : 'Message not compatible with the protocol state',
|
||
111 : 'Protocol error, unspecified'
|
||
}
|
||
|
||
class FGSMCause(Uint8):
|
||
_name = '5GSMCause'
|
||
_dic = _FGSMCause_dict
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Always-on PDU session indication
|
||
# TS 24.501, 9.11.4.3
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class AlwaysOnPDUSessInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=3),
|
||
Uint('Value', bl=1)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Always-on PDU session requested
|
||
# TS 24.501, 9.11.4.4
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class AlwaysOnPDUSessReq(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=3),
|
||
Uint('Value', bl=1)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Allowed SSC mode
|
||
# TS 24.501, 9.11.4.5
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class AllowedSSCMode(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=1),
|
||
Uint('SSC3', bl=1),
|
||
Uint('SSC2', bl=1),
|
||
Uint('SSC1', bl=1)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Integrity protection maximum data rate
|
||
# TS 24.501, 9.11.4.7
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_IntegrityProtMaxDataRate_dict = {
|
||
0 : '64 kbps',
|
||
0xff : 'full data rate'
|
||
}
|
||
|
||
class IntegrityProtMaxDataRate(Envelope):
|
||
_GEN = (
|
||
Uint8('UPUL', dic=_IntegrityProtMaxDataRate_dict),
|
||
Uint8('UPDL', dic=_IntegrityProtMaxDataRate_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Mapped EPS bearer contexts
|
||
# TS 24.501, 9.11.4.8
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_EPSBearerCtxtOC_dict = {
|
||
0 : _str_reserved,
|
||
1 : 'Create new EPS bearer',
|
||
2 : 'Delete new EPS bearer',
|
||
3 : 'Modify new EPS bearer'
|
||
}
|
||
|
||
_EPSBearerCtxtEDict_sel = {
|
||
1 : {
|
||
0 : 'parameters not included',
|
||
1 : 'parameters included'
|
||
},
|
||
2 : {
|
||
0 : 'previously provided parameters extension',
|
||
1 : 'previously provided parameters replacement'
|
||
},
|
||
3 : { # TS unclear there !
|
||
}
|
||
}
|
||
|
||
_EPSParamType_dict = {
|
||
1 : 'Mapped EPS QoS parameters',
|
||
2 : 'Mapped extended EPS QoS parameters',
|
||
3 : 'Traffic flow template',
|
||
4 : 'APN-AMBR',
|
||
5 : 'extended APN-AMBR',
|
||
}
|
||
|
||
|
||
class EPSParam(Envelope):
|
||
_GEN = (
|
||
Uint8('Type', dic=_EPSParamType_dict),
|
||
Uint8('Len'),
|
||
Alt('Content', GEN={
|
||
1 : EPSQoS(),
|
||
2 : ExtEPSQoS(),
|
||
3 : TFT(),
|
||
4 : APN_AMBR(),
|
||
5 : ExtAPN_AMBR()
|
||
},
|
||
DEFAULT=Buf('unk', val=b'', rep=REPR_HEX),
|
||
sel=lambda self: self.get_env()['Type'].get_val())
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[1].set_valauto(lambda: self[2].get_len())
|
||
self[2].set_blauto(lambda: self[1].get_val()<<3)
|
||
|
||
|
||
class EPSBearerCtxt(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=4),
|
||
Uint('EBI', bl=4),
|
||
Uint16('Len'),
|
||
Uint('OpCode', bl=2, dic=_EPSBearerCtxtOC_dict),
|
||
Uint('spare', bl=2),
|
||
Uint('E', bl=1),
|
||
Uint('Num', bl=3),
|
||
Sequence('EPSParams', GEN=EPSParam())
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self['Len'].set_valauto(lambda: 1 + self['EPSParams'].get_len()) # TS does not define which length it is...
|
||
self['E'].set_dicauto(lambda: _EPSBearerCtxtEDict_sel[self['OpCode'].get_val()])
|
||
self['Num'].set_valauto(lambda: self['EPSParams'].get_num())
|
||
self['EPSParams'].set_numauto(lambda: self['Num'].get_val())
|
||
|
||
|
||
class MappedEPSBearerCtxt(Sequence):
|
||
_GEN = EPSBearerCtxt()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Maximum number of supported packet filters
|
||
# TS 24.501, 9.11.4.9
|
||
#------------------------------------------------------------------------------#
|
||
# 17 <= Value <= 1024
|
||
|
||
class MaxPktFilters(Envelope):
|
||
_GEN = (
|
||
Uint('Value', bl=11),
|
||
Uint('spare', bl=5)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# PDU address
|
||
# TS 24.501, 9.11.4.10
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class PDUAddress(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=6, rep=REPR_HEX),
|
||
Uint('Type', bl=2, dic={1:'IPv4', 2:'IPv6', 3:'IPv4v6'}),
|
||
Alt('Addr', GEN={
|
||
1 : Buf('IPv4', bl=32, rep=REPR_HEX),
|
||
2 : Buf('IPv6', bl=128, rep=REPR_HEX),
|
||
3 : Envelope('IPv4v6', GEN=(
|
||
Buf('IPv4', bl=32, rep=REPR_HEX),
|
||
Buf('IPv6', bl=128, rep=REPR_HEX)))},
|
||
DEFAULT=Buf('unk', rep=REPR_HEX),
|
||
sel=lambda self: self.get_env()['Type'].get_val()
|
||
)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# PDU session type
|
||
# TS 24.501, 9.11.4.11
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_PDUSessType_dict = {
|
||
1 : 'IPv4',
|
||
2 : 'IPv6',
|
||
3 : 'IPv4v6',
|
||
4 : 'Unstructured',
|
||
5 : 'Ethernet',
|
||
7 : _str_reserved
|
||
}
|
||
|
||
class PDUSessType(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=1),
|
||
Uint('Value', bl=3, dic=_PDUSessType_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# QoS flow descriptions
|
||
# TS 24.501, 9.11.4.12
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_UnitBitrate_dict = {
|
||
1 : '1 Kbps',
|
||
2 : '4 Kbps',
|
||
3 : '16 Kbps',
|
||
4 : '64 Kbps',
|
||
5 : '256 kbps',
|
||
6 : '1 Mbps',
|
||
7 : '4 Mbps',
|
||
8 : '16 Mbps',
|
||
9 : '64 Mbps',
|
||
10 : '256 Mbps',
|
||
11 : '1 Gbps',
|
||
12 : '4 Gbps',
|
||
13 : '16 Gbps',
|
||
14 : '64 Gbps',
|
||
15 : '256 Gbps',
|
||
16 : '1 Tbps',
|
||
17 : '4 Tbps',
|
||
18 : '16 Tbps',
|
||
19 : '64 Tbps',
|
||
20 : '256 Tbps',
|
||
21 : '1 Pbps',
|
||
22 : '4 Pbps',
|
||
23 : '16 Pbps',
|
||
24 : '64 Pbps',
|
||
25 : '256 Pbps'
|
||
}
|
||
|
||
_QoSFlowOC_dict = {
|
||
1 : 'Create new QoS flow description',
|
||
2 : 'Delete existing QoS flow description',
|
||
3 : 'Modify existing QoS flow description'
|
||
}
|
||
|
||
_QoSFlowE_dict = {
|
||
1 : {
|
||
0 : _str_reserved,
|
||
1 : 'parameters list is included'
|
||
},
|
||
2 : {
|
||
0 : 'parameters list is not included',
|
||
1 : _str_reserved
|
||
},
|
||
3 : {
|
||
0 : 'extension of previously provided parameters',
|
||
1 : 'replacement of all previously provided parameters'
|
||
}
|
||
}
|
||
|
||
_QoSFlowParamType_dict = {
|
||
1 : '5QI',
|
||
2 : 'GFBR uplink',
|
||
3 : 'GFBR downlink',
|
||
4 : 'MFBR uplink',
|
||
5 : 'MFBR downlink',
|
||
6 : 'Averaging window',
|
||
7 : 'EPS bearer identity'
|
||
}
|
||
|
||
|
||
class _QoSFlowParamFBR(Envelope):
|
||
_GEN = (
|
||
Uint8('Unit', dic=_UnitBitrate_dict),
|
||
Uint16('Value')
|
||
)
|
||
|
||
|
||
class _QoSFlowParamEBI(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=4),
|
||
Uint('EBI', bl=4),
|
||
)
|
||
|
||
|
||
class QoSFlowParam(Envelope):
|
||
_GEN = (
|
||
Uint8('Type', dic=_QoSFlowParamType_dict),
|
||
Uint8('Len'),
|
||
Alt('Content', GEN={
|
||
1 : Uint8('5GQI'),
|
||
2 : _QoSFlowParamFBR('GFBR'),
|
||
3 : _QoSFlowParamFBR('GFBR'),
|
||
4 : _QoSFlowParamFBR('MFBR'),
|
||
5 : _QoSFlowParamFBR('MFBR'),
|
||
6 : Uint16('Win', desc='millisecond'),
|
||
7 : _QoSFlowParamEBI('EBI')
|
||
},
|
||
DEFAULT=Buf('unk', val=b'', rep=REPR_HEX),
|
||
sel=lambda self: self.get_env()['Type'].get_val())
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[1].set_valauto(lambda: self[2].get_len())
|
||
self[2].set_blauto(lambda: self[1].get_val()<<3)
|
||
|
||
|
||
class QoSFlow(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('QFI', bl=6),
|
||
Uint('OpCode', bl=3, dic=_QoSFlowOC_dict),
|
||
Uint('spare', bl=6), # last 5 bit of 2nd octet and 1st bit of 3rd octet
|
||
Uint('E', bl=1),
|
||
Uint('Num', bl=6),
|
||
Sequence('Params', GEN=QoSFlowParam('Param'))
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self['E'].set_dicauto(lambda: _QoSFlowE_dict[self['OpCode'].get_val()])
|
||
self['Num'].set_valauto(lambda: self['Params'].get_num())
|
||
self['Params'].set_numauto(lambda: self['Num'].get_val())
|
||
|
||
|
||
class QoSFlowDesc(Sequence):
|
||
_GEN = QoSFlow()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# QoS rules
|
||
# TS 24.501, 9.11.4.13
|
||
#------------------------------------------------------------------------------#
|
||
# similar to Traffic Flow Template for PS and EPS domains
|
||
# TS 24.008, 10.5.6.12
|
||
|
||
_QoSRuleOpCode_dict = {
|
||
0 : _str_reserved,
|
||
1 : 'Create new QoS rule',
|
||
2 : 'Delete existing QoS rule',
|
||
3 : 'Modify existing QoS rule and add packet filters',
|
||
4 : 'Modify existing QoS rule and replace all packet filters',
|
||
5 : 'Modify existing QoS rule and delete packet filters',
|
||
6 : 'Modify existing QoS rule without modifying packet filters',
|
||
7 : _str_reserved
|
||
}
|
||
|
||
_PktFilterDir_dict = {
|
||
0 : _str_reserved,
|
||
1 : 'downlink only',
|
||
2 : 'uplink only',
|
||
3 : 'bidirectional'
|
||
}
|
||
|
||
_PktFilterCompType_dict = {
|
||
1 : 'Match-all type',
|
||
16 : 'IPv4 remote address type',
|
||
17 : 'IPv4 local address type',
|
||
33 : 'IPv6 remote address/prefix length type',
|
||
35 : 'IPv6 local address/prefix length type',
|
||
48 : 'Protocol identifier/Next header type',
|
||
64 : 'Single local port type',
|
||
65 : 'Local port range type',
|
||
80 : 'Single remote port type',
|
||
81 : 'Remote port range type',
|
||
96 : 'Security parameter index type',
|
||
112 : 'Type of service/Traffic class type',
|
||
128 : 'Flow label type',
|
||
129 : 'Destination MAC address type',
|
||
130 : 'Source MAC address type',
|
||
131 : '802.1Q C-TAG VID type',
|
||
132 : '802.1Q S-TAG VID type',
|
||
133 : '802.1Q C-TAG PCP/DEI type',
|
||
134 : '802.1Q S-TAG PCP/DEI type',
|
||
135 : 'Ethertype type'
|
||
}
|
||
|
||
|
||
class PktFilterDel(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=4, rep=REPR_HEX),
|
||
Uint('ID', bl=4)
|
||
)
|
||
|
||
|
||
class _PktFilterCompIPv4(Envelope):
|
||
_GEN = (
|
||
Buf('Addr', bl=32, rep=REPR_HEX),
|
||
Buf('Mask', bl=32, rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
class _PktFilterCompIPv6(Envelope):
|
||
_GEN = (
|
||
Buf('Addr', bl=128, rep=REPR_HEX),
|
||
Uint8('Pref')
|
||
)
|
||
|
||
|
||
class _PktFilterCompPortRange(Envelope):
|
||
_GEN = (
|
||
Uint16('Low'),
|
||
Uint16('High')
|
||
)
|
||
|
||
|
||
class _PktFilterTrafficClass(Envelope):
|
||
_GEN = (
|
||
Uint8('Class'),
|
||
Uint8('Mask')
|
||
)
|
||
|
||
|
||
class _PktFilterFlowLabel(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=4),
|
||
Uint('Value', bl=20, rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
class _PktFilterVID(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=4),
|
||
Uint('Value', bl=12)
|
||
)
|
||
|
||
|
||
class _PktFilterPCPDEI(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=4),
|
||
Uint('PCP', bl=3),
|
||
Uint('DEI', bl=1)
|
||
)
|
||
|
||
|
||
class PktFilterComp(Envelope):
|
||
_GEN = (
|
||
Uint8('Type', dic=_PktFilterCompType_dict),
|
||
Alt('Value', GEN={
|
||
1 : Buf('none', bl=0, rep=REPR_HEX),
|
||
16 : _PktFilterCompIPv4('IPv4'),
|
||
17 : _PktFilterCompIPv4('IPv4'),
|
||
33 : _PktFilterCompIPv6('IPv6Pref'),
|
||
35 : _PktFilterCompIPv6('IPv6Pref'),
|
||
48 : Uint8('ProtId', dic=IPProt_dict),
|
||
64 : Uint16('Port'),
|
||
65 : _PktFilterCompPortRange('PortRange'),
|
||
80 : Uint16('Port'),
|
||
81 : _PktFilterCompPortRange('PortRange'),
|
||
96 : Uint32('SPI', rep=REPR_HEX),
|
||
112 : _PktFilterTrafficClass('TrafficClass'),
|
||
128 : _PktFilterFlowLabel('FlowLabel'),
|
||
129 : Buf('MACDest', bl=48, rep=REPR_HEX),
|
||
130 : Buf('MACSrc', bl=48, rep=REPR_HEX),
|
||
131 : _PktFilterVID('CTagVID'),
|
||
132 : _PktFilterVID('STagVID'),
|
||
133 : _PktFilterPCPDEI('CTagPCPDEI'),
|
||
134 : _PktFilterPCPDEI('STagPCPDEI'),
|
||
135 : Uint16('EtherType', dic=EtherType_dict)
|
||
},
|
||
DEFAULT=Buf('unk', val=b'', rep=REPR_HEX),
|
||
sel=lambda self: self.get_env()['Type'].get_val())
|
||
)
|
||
|
||
|
||
class PktFilterAdd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=2),
|
||
Uint('Dir', bl=2, dic=_PktFilterDir_dict),
|
||
Uint('Id', bl=4),
|
||
Uint8('Len'),
|
||
Sequence('PktFilter', GEN=PktFilterComp())
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[3].set_valauto(lambda: self[4].get_len())
|
||
self[4].set_blauto(lambda: self[3].get_val()<<3)
|
||
|
||
|
||
class QoSRule(Envelope):
|
||
_GEN = (
|
||
Uint8('ID', dic={0:'no QoS rule identifier assigned'}),
|
||
Uint16('Len'),
|
||
Uint('OpCode', val=1, bl=3, dic=_QoSRuleOpCode_dict),
|
||
Uint('DQR', bl=1, dic={0:'not the default rule', 1:'default rule'}),
|
||
Uint('NumPktFilters', bl=4),
|
||
Sequence('PktFilterList',
|
||
GEN=Alt('PktFilter', GEN={
|
||
1 : PktFilterAdd(),
|
||
2 : Buf('empty', bl=0),
|
||
3 : PktFilterAdd(),
|
||
4 : PktFilterAdd(),
|
||
5 : PktFilterDel(),
|
||
6 : Buf('empty', bl=0)},
|
||
DEFAULT=Buf('none', bl=0, rep=REPR_HEX),
|
||
sel=lambda self: self.get_env().get_env()['OpCode'].get_val())
|
||
),
|
||
Uint8('Precedence', trans=True), # optional
|
||
Envelope('Flow', GEN=(
|
||
Uint('spare', bl=1),
|
||
Uint('Segregation', bl=2),
|
||
Uint('QFI', bl=5)),
|
||
trans=True) # optional
|
||
)
|
||
|
||
def __init__(self, *args, **kwargs):
|
||
Envelope.__init__(self, *args, **kwargs)
|
||
self[1].set_valauto(lambda: 1 + self['PktFilterList'].get_len() + self['Precedence'].get_len() + self['Flow'].get_len())
|
||
self[4].set_valauto(lambda: self[5].get_num())
|
||
self[5].set_numauto(lambda: self[4].get_val())
|
||
|
||
def _from_char(self, char):
|
||
if self.get_trans():
|
||
return
|
||
self[0]._from_char(char)
|
||
self[1]._from_char(char)
|
||
char_lb = char._len_bit
|
||
char._len_bit = char._cur + (self[1].get_val()<<3)
|
||
if char._len_bit > char_lb:
|
||
raise(EltErr('{0} [_from_char]: bit length overflow'.format(self._name)))
|
||
self[2]._from_char(char)
|
||
self[3]._from_char(char)
|
||
self[4]._from_char(char)
|
||
self[5]._from_char(char)
|
||
if char.len_bit() >= 8:
|
||
self[6].set_trans(False)
|
||
self[6]._from_char(char)
|
||
if char.len_bit() >= 8:
|
||
self[7].set_trans(False)
|
||
self[7]._from_char(char)
|
||
char._len_bit = char_lb
|
||
|
||
|
||
class QoSRules(Sequence):
|
||
_GEN = QoSRule()
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Session-AMBR
|
||
# TS 24.501, 9.11.4.14
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class SessAMBR(Envelope):
|
||
_GEN = (
|
||
Uint8('DLUnit', dic=_UnitBitrate_dict),
|
||
Uint16('DL'),
|
||
Uint8('ULUnit', dic=_UnitBitrate_dict),
|
||
Uint16('UL')
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# SM PDU DN request container
|
||
# TS 24.501, 9.11.4.15
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class SMPDUDNReqContainer(Envelope):
|
||
_GEN = (
|
||
UTF8String('DNSpecificID'),
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# SSC mode
|
||
# TS 24.501, 9.11.4.16
|
||
#------------------------------------------------------------------------------#
|
||
|
||
_SSCMode_dict = {
|
||
1 : 'mode 1',
|
||
2 : 'mode 2',
|
||
3 : 'mode 3',
|
||
4 : 'unused - mode 1',
|
||
5 : 'unused - mode 2',
|
||
6 : 'unused - mode 3'
|
||
}
|
||
|
||
class SSCMode(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=1),
|
||
Uint('Value', bl=3, dict=_SSCMode_dict)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Re-attempt indicator
|
||
# TS 24.501, 9.11.4.17
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class ReattemptInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=6, rep=REPR_HEX),
|
||
Uint('EPLMNC', bl=1),
|
||
Uint('RATC', bl=1)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# 5GSM network feature support
|
||
# TS 24.501, 9.11.4.18
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class FGSNetFeat(Envelope):
|
||
_name = '5GSMNetFeat'
|
||
_GEN = (
|
||
Uint('spare', bl=7),
|
||
Uint('EPT-S1', bl=1),
|
||
Buf('spare', val=b'', rep=REPR_HEX)
|
||
)
|
||
|
||
def disable_from(self, ind):
|
||
"""disables all elements from index `ind' excluded (element offset or name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = self._by_name.index(ind)
|
||
[e.set_trans(True) for e in self._content[ind:]]
|
||
|
||
def enable_upto(self, ind):
|
||
"""enables all elements up to index `ind' included (element offset or name)
|
||
"""
|
||
if isinstance(ind, str_types) and ind in self._by_name:
|
||
ind = 1 + self._by_name.index(ind)
|
||
[e.set_trans(False) for e in self._content[:ind]]
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Session-TMBR
|
||
# TS 24.501, 9.11.4.19
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class SessTMBR(SessAMBR):
|
||
pass
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Re-attempt indicator
|
||
# TS 24.501, 9.11.4.17
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class CongestReattemptInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=7, rep=REPR_HEX),
|
||
Uint('ABO', bl=1)
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# Control plane only indication
|
||
# TS 24.501, 9.11.4.23
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class CtrlPlaneOnlyInd(Envelope):
|
||
_GEN = (
|
||
Uint('spare', bl=3),
|
||
Uint('Value', val=1, bl=1,
|
||
dic={1:'PDU session can be used for control plane CIoT 5GS optimization only'})
|
||
)
|
||
|
||
|
||
|
||
|