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5af7bdf5c7
There are some problems with the usage of decode_select_response. At the moment the ADF files overload the related method to provide decoding of the select responses as per 3gpp TS 102 221. However, this also means that the decoder is only available under ADF.USIM and ADF.ISIM. DF.GSM and DF.TELECOM also overload the decoder method, just like an ADF would do. This decoding method is then implemented as per 3gpp TS 51 011. Since this a a problem on UICCs, the method detects the magic byte 0x62 that can be found at the beginning on every select response of an UICC to defer to the TS 102 221 decoding method. TS 51 011 defines the first two bytes of the select response as RFU. This at least problematic. To solve this there should be a default method for decode_select_response in the profile, which can be used if no file overloads it with a specific decoder. ADFs use specific decoders, but everything else should use the default decoder. When we deal with an UICC, we expect the select response to be consistantly conform to TS 102 221, if we deal with a clasic sim we expect responses as per TS 51 011 only. Since it is still possible to replace the select response decoder we still have the opportunity to have custom select response in cartain DFs and ADFs should we need them. Change-Id: I95e33ec1755727dc9bbbc6016ce2d99a9e66f214 Related: OS#5274
256 lines
10 KiB
Python
256 lines
10 KiB
Python
# -*- coding: utf-8 -*-
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# without this, pylint will fail when inner classes are used
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# within the 'nested' kwarg of our TlvMeta metaclass on python 3.7 :(
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# pylint: disable=undefined-variable
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"""
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The File (and its derived classes) uses the classes of pySim.filesystem in
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order to describe the files specified in UIC Reference P38 T 9001 5.0 "FFFIS for GSM-R SIM Cards"
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"""
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#
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# Copyright (C) 2021 Harald Welte <laforge@osmocom.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from pySim.utils import *
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#from pySim.tlv import *
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from struct import pack, unpack
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from construct import *
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from construct import Optional as COptional
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from pySim.construct import *
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import enum
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from pySim.filesystem import *
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import pySim.ts_102_221
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import pySim.ts_51_011
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######################################################################
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# DF.EIRENE (FFFIS for GSM-R SIM Cards)
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######################################################################
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class FuncNTypeAdapter(Adapter):
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def _decode(self, obj, context, path):
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bcd = swap_nibbles(b2h(obj))
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last_digit = bcd[-1]
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return {'functional_number': bcd[:-1],
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'presentation_of_only_this_fn': last_digit & 4,
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'permanent_fn': last_digit & 8 }
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def _encode(self, obj, context, path):
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return 'FIXME'
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class EF_FN(LinFixedEF):
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"""Section 7.2"""
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def __init__(self):
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super().__init__(fid='6ff1', sfid=None, name='EF.EN', desc='Functional numbers', rec_len={9,9})
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self._construct = Struct('functional_number_and_type'/FuncNTypeAdapter(Bytes(8)),
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'list_number'/Int8ub)
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class PlConfAdapter(Adapter):
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"""Section 7.4.3"""
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def _decode(self, obj, context, path):
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num = int(obj) & 0x7
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if num == 0:
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return 'None'
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elif num == 1:
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return 4
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elif num == 2:
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return 3
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elif num == 3:
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return 2
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elif num == 4:
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return 1
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elif num == 5:
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return 0
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def _encode(self, obj, context, path):
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if obj == 'None':
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return 0
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obj = int(obj)
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if obj == 4:
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return 1
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elif obj == 3:
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return 2
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elif obj == 2:
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return 3
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elif obj == 1:
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return 4
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elif obj == 0:
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return 5
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class PlCallAdapter(Adapter):
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"""Section 7.4.12"""
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def _decode(self, obj, context, path):
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num = int(obj) & 0x7
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if num == 0:
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return 'None'
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elif num == 1:
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return 4
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elif num == 2:
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return 3
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elif num == 3:
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return 2
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elif num == 4:
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return 1
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elif num == 5:
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return 0
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elif num == 6:
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return 'B'
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elif num == 7:
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return 'A'
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def _encode(self, obj, context, path):
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if obj == 'None':
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return 0
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if obj == 4:
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return 1
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elif obj == 3:
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return 2
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elif obj == 2:
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return 3
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elif obj == 1:
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return 4
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elif obj == 0:
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return 5
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elif obj == 'B':
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return 6
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elif obj == 'A':
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return 7
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NextTableType = Enum(Byte, decision=0xf0, predefined=0xf1, num_dial_digits=0xf2, ic=0xf3, empty=0xff)
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class EF_CallconfC(TransparentEF):
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"""Section 7.3"""
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def __init__(self):
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super().__init__(fid='6ff2', sfid=None, name='EF.CallconfC', size={24,24},
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desc='Call Configuration of emergency calls Configuration')
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self._construct = Struct('pl_conf'/PlConfAdapter(Int8ub),
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'conf_nr'/BcdAdapter(Bytes(8)),
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'max_rand'/Int8ub,
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'n_ack_max'/Int16ub,
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'pl_ack'/PlCallAdapter(Int8ub),
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'n_nested_max'/Int8ub,
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'train_emergency_gid'/Int8ub,
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'shunting_emergency_gid'/Int8ub,
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'imei'/BcdAdapter(Bytes(8)))
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class EF_CallconfI(LinFixedEF):
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"""Section 7.5"""
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def __init__(self):
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super().__init__(fid='6ff3', sfid=None, name='EF.CallconfI', rec_len={21,21},
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desc='Call Configuration of emergency calls Information')
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self._construct = Struct('t_dur'/Int24ub,
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't_relcalc'/Int32ub,
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'pl_call'/PlCallAdapter(Int8ub),
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'cause'/FlagsEnum(Int8ub, powered_off=1, radio_link_error=2, user_command=5),
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'gcr'/BcdAdapter(Bytes(4)),
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'fnr'/BcdAdapter(Bytes(8)))
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class EF_Shunting(TransparentEF):
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"""Section 7.6"""
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def __init__(self):
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super().__init__(fid='6ff4', sfid=None, name='EF.Shunting', desc='Shunting', size={8,8})
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self._construct = Struct('common_gid'/Int8ub,
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'shunting_gid'/Bytes(7))
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class EF_GsmrPLMN(LinFixedEF):
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"""Section 7.7"""
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def __init__(self):
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super().__init__(fid='6ff5', sfid=None, name='EF.GsmrPLMN', desc='GSM-R network selection', rec_len={9,9})
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self._construct = Struct('plmn'/BcdAdapter(Bytes(3)),
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'class_of_network'/BitStruct('supported'/FlagsEnum(BitsInteger(5), vbs=1, vgcs=2, emlpp=4, fn=8, eirene=16),
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'preference'/BitsInteger(3)),
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'ic_incoming_ref_tbl'/HexAdapter(Bytes(2)),
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'outgoing_ref_tbl'/HexAdapter(Bytes(2)),
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'ic_table_ref'/HexAdapter(Bytes(1)))
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class EF_IC(LinFixedEF):
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"""Section 7.8"""
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def __init__(self):
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super().__init__(fid='6f8d', sfid=None, name='EF.IC', desc='International Code', rec_len={7,7})
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self._construct = Struct('next_table_type'/NextTableType,
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'id_of_next_table'/HexAdapter(Bytes(2)),
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'ic_decision_value'/BcdAdapter(Bytes(2)),
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'network_string_table_index'/Int8ub)
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class EF_NW(LinFixedEF):
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"""Section 7.9"""
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def __init__(self):
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super().__init__(fid='6f80', sfid=None, name='EF.NW', desc='Network Name', rec_len={8,8})
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self._construct = GsmString(8)
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class EF_Switching(LinFixedEF):
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"""Section 8.4"""
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def __init__(self, fid, name, desc):
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super().__init__(fid=fid, sfid=None, name=name, desc=desc, rec_len={6,6})
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self._construct = Struct('next_table_type'/NextTableType,
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'id_of_next_table'/HexAdapter(Bytes(2)),
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'decision_value'/BcdAdapter(Bytes(2)),
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'string_table_index'/Int8ub)
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class EF_Predefined(LinFixedEF):
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"""Section 8.5"""
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def __init__(self, fid, name, desc):
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super().__init__(fid=fid, sfid=None, name=name, desc=desc, rec_len={3,3})
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# header and other records have different structure. WTF !?!
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self._construct = Struct('next_table_type'/NextTableType,
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'id_of_next_table'/HexAdapter(Bytes(2)),
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'predefined_value1'/HexAdapter(Bytes(2)),
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'string_table_index1'/Int8ub)
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# TODO: predefined value n, ...
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class EF_DialledVals(TransparentEF):
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"""Section 8.6"""
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def __init__(self, fid, name, desc):
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super().__init__(fid=fid, sfid=None, name=name, desc=desc, size={4,4})
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self._construct = Struct('next_table_type'/NextTableType,
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'id_of_next_table'/HexAdapter(Bytes(2)),
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'dialed_digits'/BcdAdapter(Bytes(1)))
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class DF_EIRENE(CardDF):
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def __init__(self, fid='7fe0', name='DF.EIRENE', desc='GSM-R EIRENE'):
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super().__init__(fid=fid, name=name, desc=desc)
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files = [
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# Section 7.1.6 / Table 10 EIRENE GSM EFs
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EF_FN(),
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EF_CallconfC(),
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EF_CallconfI(),
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EF_Shunting(),
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EF_GsmrPLMN(),
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EF_IC(),
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EF_NW(),
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# support of the numbering plan
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EF_Switching(fid='6f8e', name='EF.CT', desc='Call Type'),
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EF_Switching(fid='6f8f', name='EF.SC', desc='Short Code'),
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EF_Predefined(fid='6f88', name='EF.FC', desc='Function Code'),
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EF_Predefined(fid='6f89', name='EF.Service', desc='VGCS/VBS Service Code'),
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EF_Predefined(fid='6f8a', name='EF.Call', desc='First digit of the group ID'),
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EF_Predefined(fid='6f8b', name='EF.FctTeam', desc='Call Type 6 Team Type + Team member function'),
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EF_Predefined(fid='6f92', name='EF.Controller', desc='Call Type 7 Controller function code'),
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EF_Predefined(fid='6f8c', name='EF.Gateway', desc='Access to external networks'),
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EF_DialledVals(fid='6f81', name='EF.5to8digits', desc='Call Type 2 User Identity Number length'),
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EF_DialledVals(fid='6f82', name='EF.2digits', desc='2 digits input'),
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EF_DialledVals(fid='6f83', name='EF.8digits', desc='8 digits input'),
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EF_DialledVals(fid='6f84', name='EF.9digits', desc='9 digits input'),
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EF_DialledVals(fid='6f85', name='EF.SSSSS', desc='Group call area input'),
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EF_DialledVals(fid='6f86', name='EF.LLLLL', desc='Location number Call Type 6'),
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EF_DialledVals(fid='6f91', name='EF.Location', desc='Location number Call Type 7'),
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EF_DialledVals(fid='6f87', name='EF.FreeNumber', desc='Free Number Call Type 0 and 8'),
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]
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self.add_files(files)
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