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ts_31_102: Add decoder/encoder for DF.5GS/EF.Routing_Indicator 

This file is rather important for 5G SA operation, so we should have
a proper encoder/decoder in place.

Change-Id: I1b37fdfc2807976880b2cafb61951f08eebeb344
This commit is contained in:
Harald Welte 2023-05-27 12:48:54 +02:00 committed by laforge
parent d70ac22618
commit 455611c9a3
2 changed files with 12 additions and 5 deletions
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4
docs/suci-tutorial.rst
View File

@ -132,10 +132,8 @@ the Routing Indicator to 0x71:
::
pySIM-shell (MF/ADF.USIM/DF.5GS/EF.Routing_Indicator)> update_binary 0071ffff
pySIM-shell (MF/ADF.USIM/DF.5GS/EF.Routing_Indicator)> update_binary 17ffffff
(the encoding might be different, see `this
comment <https://gist.github.com/mrlnc/01d6300f1904f154d969ff205136b753?permalink_comment_id=4050795#gistcomment-4050795>`__)
You can also set the routing indicator to **0x0**, which is *valid* and
means “routing indicator not specified”, leaving it to the modem.

13
pySim/ts_31_102.py
View File

@ -1080,6 +1080,16 @@ class EF_SUPI_NAI(TransparentEF):
super().__init__(fid, sfid=sfid, name=name, desc=desc, **kwargs)
self._tlv = EF_SUPI_NAI.NAI_TLV_Collection
# TS 31.102 Section 4.4.11.11
class EF_Routing_Indicator(TransparentEF):
def __init__(self, fid='4f0a', sfid=0x0a, name='EF.Routing_Indicator', desc='Routing Indicator', **kwargs):
super().__init__(fid, sfid=sfid, name=name, desc=desc, **kwargs)
# 3GPP TS 24.501 Table 9.11.3.4.1:
# Routing Indicator shall consist of 1 to 4 digits. The coding of this field is the
# responsibility of home network operator but BCD coding shall be used. If a network
# operator decides to assign less than 4 digits to Routing Indicator, the remaining digits
# shall be coded as "1111" to fill the 4 digits coding of Routing Indicator
self._construct = Struct('routing_indicator'/BcdAdapter(Rpad(Bytes(2))), 'rfu'/HexAdapter(Bytes(2)))
# TS 31.102 Section 4.4.11.13
class EF_TN3GPPSNN(TransparentEF):
@ -1434,8 +1444,7 @@ class DF_USIM_5GS(CardDF):
EF_SUCI_Calc_Info(service=124),
EF_OPL5G(service=129),
EF_SUPI_NAI(service=130),
TransparentEF('4F0A', 0x0a, 'EF.Routing_Indicator',
'Routing Indicator', size=(4, 4), service=124),
EF_Routing_Indicator(service=124),
TransparentEF('4F0B', 0x0b, 'EF.URSP',
'UE Route Selector Policies per PLMN', service=132),
EF_TN3GPPSNN(service=133),