catarrh/pysim-local
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix more odd-length digit sequences via PaddedBcdAdapter

Browse Source 
There are more files where trailing digits are indicated using 'f' and
should be stripped during decode, including EF.MSISDN and EF.VGCS

This is not just a presentation issue, but actually rendered wrong data
before, see the modified test output where our "read_record_uicc.ok"
file contained "bcd_len: 7" but then only 6 BCD digits due to this bug.

Change-Id: I4571482da924a3d645caa297108279d182448d21
This commit is contained in:
Harald Welte
2025-12-19 18:38:38 +01:00
parent 381519556c
commit 1da34c1a4f
3 changed files with 13 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
pySim/ts_31_102.py
View File

@@ -596,7 +596,7 @@ class EF_ICI(CyclicEF):
self._construct = Struct('alpha_id'/Bytes(this._.total_len-28), self._construct = Struct('alpha_id'/Bytes(this._.total_len-28),
'len_of_bcd_contents'/Int8ub, 'len_of_bcd_contents'/Int8ub,
'ton_npi'/Int8ub, 'ton_npi'/Int8ub,
'call_number'/BcdAdapter(Bytes(10)), 'call_number'/PaddedBcdAdapter(Rpad(Bytes(10))),
'cap_cfg2_record_id'/Int8ub, 'cap_cfg2_record_id'/Int8ub,
'ext5_record_id'/Int8ub, 'ext5_record_id'/Int8ub,
'date_and_time'/BcdAdapter(Bytes(7)), 'date_and_time'/BcdAdapter(Bytes(7)),
@@ -612,7 +612,7 @@ class EF_OCI(CyclicEF):
self._construct = Struct('alpha_id'/Bytes(this._.total_len-27), self._construct = Struct('alpha_id'/Bytes(this._.total_len-27),
'len_of_bcd_contents'/Int8ub, 'len_of_bcd_contents'/Int8ub,
'ton_npi'/Int8ub, 'ton_npi'/Int8ub,
'call_number'/BcdAdapter(Bytes(10)), 'call_number'/PaddedBcdAdapter(Rpad(Bytes(10))),
'cap_cfg2_record_id'/Int8ub, 'cap_cfg2_record_id'/Int8ub,
'ext5_record_id'/Int8ub, 'ext5_record_id'/Int8ub,
'date_and_time'/BcdAdapter(Bytes(7)), 'date_and_time'/BcdAdapter(Bytes(7)),
@@ -1118,7 +1118,7 @@ class EF_Routing_Indicator(TransparentEF):
# responsibility of home network operator but BCD coding shall be used. If a network # 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 # 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 # shall be coded as "1111" to fill the 4 digits coding of Routing Indicator
self._construct = Struct('routing_indicator'/Rpad(BcdAdapter(Bytes(2)), 'f', 2), self._construct = Struct('routing_indicator'/PaddedBcdAdapter(Rpad(Bytes(2))),
'rfu'/Bytes(2)) 'rfu'/Bytes(2))
# TS 31.102 Section 4.4.11.13 (Rel 16) # TS 31.102 Section 4.4.11.13 (Rel 16)

12
pySim/ts_51_011.py
View File

@@ -152,7 +152,7 @@ class EF_ADN(LinFixedEF):
self._construct = Struct('alpha_id'/COptional(GsmOrUcs2Adapter(Rpad(Bytes(this._.total_len-14)))), self._construct = Struct('alpha_id'/COptional(GsmOrUcs2Adapter(Rpad(Bytes(this._.total_len-14)))),
'len_of_bcd'/Int8ub, 'len_of_bcd'/Int8ub,
'ton_npi'/TonNpi, 'ton_npi'/TonNpi,
'dialing_nr'/ExtendedBcdAdapter(BcdAdapter(Rpad(Bytes(10)))), 'dialing_nr'/ExtendedBcdAdapter(PaddedBcdAdapter(Rpad(Bytes(10)))),
'cap_conf_id'/Int8ub, 'cap_conf_id'/Int8ub,
ext_name/Int8ub) ext_name/Int8ub)
@@ -193,11 +193,11 @@ class EF_MSISDN(LinFixedEF):
( 'ffffffffffffffffffffffffffffffffffffffff04b12143f5ffffffffffffffffff', ( 'ffffffffffffffffffffffffffffffffffffffff04b12143f5ffffffffffffffffff',
{"alpha_id": "", "len_of_bcd": 4, "ton_npi": {"ext": True, "type_of_number": "network_specific", {"alpha_id": "", "len_of_bcd": 4, "ton_npi": {"ext": True, "type_of_number": "network_specific",
"numbering_plan_id": "isdn_e164"}, "numbering_plan_id": "isdn_e164"},
"dialing_nr": "12345f"}), "dialing_nr": "12345"}),
( '456967656e65205275666e756d6d6572ffffffff0891947172199181f3ffffffffff', ( '456967656e65205275666e756d6d6572ffffffff0891947172199181f3ffffffffff',
{"alpha_id": "Eigene Rufnummer", "len_of_bcd": 8, "ton_npi": {"ext": True, "type_of_number": "international", {"alpha_id": "Eigene Rufnummer", "len_of_bcd": 8, "ton_npi": {"ext": True, "type_of_number": "international",
"numbering_plan_id": "isdn_e164"}, "numbering_plan_id": "isdn_e164"},
"dialing_nr": "4917279119183f"}), "dialing_nr": "4917279119183"}),
] ]
# Ensure deprecated representations still work # Ensure deprecated representations still work
@@ -215,7 +215,7 @@ class EF_MSISDN(LinFixedEF):
self._construct = Struct('alpha_id'/COptional(GsmOrUcs2Adapter(Rpad(Bytes(this._.total_len-14)))), self._construct = Struct('alpha_id'/COptional(GsmOrUcs2Adapter(Rpad(Bytes(this._.total_len-14)))),
'len_of_bcd'/Int8ub, 'len_of_bcd'/Int8ub,
'ton_npi'/TonNpi, 'ton_npi'/TonNpi,
'dialing_nr'/ExtendedBcdAdapter(BcdAdapter(Rpad(Bytes(10)))), 'dialing_nr'/ExtendedBcdAdapter(PaddedBcdAdapter(Rpad(Bytes(10)))),
Padding(2, pattern=b'\xff')) Padding(2, pattern=b'\xff'))
# Maintain compatibility with deprecated representations # Maintain compatibility with deprecated representations
@@ -661,12 +661,12 @@ class EF_AD(TransparentEF):
# TS 51.011 Section 10.3.20 / 10.3.22 # TS 51.011 Section 10.3.20 / 10.3.22
class EF_VGCS(TransRecEF): class EF_VGCS(TransRecEF):
_test_de_encode = [ _test_de_encode = [
( "92f9ffff", "299fffff" ), ( "92f9ffff", "299" ),
] ]
def __init__(self, fid='6fb1', sfid=None, name='EF.VGCS', size=(4, 200), rec_len=4, def __init__(self, fid='6fb1', sfid=None, name='EF.VGCS', size=(4, 200), rec_len=4,
desc='Voice Group Call Service', **kwargs): desc='Voice Group Call Service', **kwargs):
super().__init__(fid, sfid=sfid, name=name, desc=desc, size=size, rec_len=rec_len, **kwargs) super().__init__(fid, sfid=sfid, name=name, desc=desc, size=size, rec_len=rec_len, **kwargs)
self._construct = BcdAdapter(Bytes(4)) self._construct = PaddedBcdAdapter(Rpad(Bytes(4)))
# TS 51.011 Section 10.3.21 / 10.3.23 # TS 51.011 Section 10.3.21 / 10.3.23
class EF_VGCSS(TransparentEF): class EF_VGCSS(TransparentEF):

8
tests/pySim-shell_test/file_content/test_record_uicc.ok
View File

@@ -19,7 +19,7 @@
"type_of_number": "reserved_for_extension", "type_of_number": "reserved_for_extension",
"numbering_plan_id": "reserved_for_extension" "numbering_plan_id": "reserved_for_extension"
}, },
"dialing_nr": "123456", "dialing_nr": "1234567",
"cap_conf_id": 42, "cap_conf_id": 42,
"ext4_record_id": 23 "ext4_record_id": 23
}, },
@@ -67,7 +67,7 @@
"type_of_number": "reserved_for_extension", "type_of_number": "reserved_for_extension",
"numbering_plan_id": "reserved_for_extension" "numbering_plan_id": "reserved_for_extension"
}, },
"dialing_nr": "123456", "dialing_nr": "1234567",
"cap_conf_id": 42, "cap_conf_id": 42,
"ext4_record_id": 23 "ext4_record_id": 23
}, },
@@ -127,7 +127,7 @@
"type_of_number": "reserved_for_extension", "type_of_number": "reserved_for_extension",
"numbering_plan_id": "reserved_for_extension" "numbering_plan_id": "reserved_for_extension"
}, },
"dialing_nr": "123456", "dialing_nr": "1234567",
"cap_conf_id": 42, "cap_conf_id": 42,
"ext4_record_id": 23 "ext4_record_id": 23
} }
@@ -140,7 +140,7 @@
"type_of_number": "reserved_for_extension", "type_of_number": "reserved_for_extension",
"numbering_plan_id": "reserved_for_extension" "numbering_plan_id": "reserved_for_extension"
}, },
"dialing_nr": "123456", "dialing_nr": "1234567",
"cap_conf_id": 42, "cap_conf_id": 42,
"ext4_record_id": 23 "ext4_record_id": 23
} }