TS 102 223 §6.6.13 support for the SET UP IDLE MODE TEXT (0x28)
proactive command:
- Command qualifier: COMMAND_QUALIFIERS entries may now be callables
for bitmask-style qualifiers; _idle_text_qualifier decodes bit 1
as "icon self-explanatory", hides 0x00, falls back to raw hex on
RFU bits.
- Icon Identifier TLV (0x1E) parsed into icon_id (image record
number in EF_IMG, 0 = none); rendered as an "Icon" detail row in
the PWA.
- Zero-length Text String TLV now yields text='' ("remove idle mode
text") instead of being silently skipped.
Tests: +6 TestIdleModeText cases (8-bit/UCS-2 text, icon TLV,
qualifier variants, empty text) — 285 total. SW cache bumped to
simtrace-analyser-v14.
- Add a P2 spec for AUTHENTICATE (auth context bits + specific-reference-data
flag), so P2 is displayed instead of only leaking through cmd.context.
- Fix P1 name to 'No indication' (was the misleading 'Run GSM algorithm').
- Decompose AUTN into SQN(xor)AK / AMF / MAC and AUTS into SQN(xor)AK / MAC-S
per TS 33.102; surface 'specific reference data' key flag.
- SW column now shows green (success 90/92-9F), blue (pending 61/91/6C),
amber (warning 62/63), red (error 64-6F) per ISO 7816-4 / TS 102 221.
- _decode_nai: treat all-FF records as empty instead of emitting
replacement characters; strip FF padding before the ASCII fallback.
- Only update the selected-file state on a successful SELECT (SW1 in
61/62/63/90/91/92/9E/9F); a failed SELECT (e.g. 6A82) leaves the
current file unchanged.
- Track the file structure from the FCP (GET RESPONSE after SELECT).
- Skip file decoding for record ops (READ/UPDATE/SEARCH RECORD) when the
selected file is transparent/DF, marking the result 'stale' instead of
decoding garbage — this catches silently-dropped SELECTs.
- Track the currently selected file (SELECT by FID/path) across the
session and pass it to the decoder; reset on ATR/card change; seed via
a bounded backward scan on paged views.
- Decode READ BINARY/RECORD, UPDATE BINARY/RECORD and (via GET RESPONSE)
SEARCH RECORD bodies using a FILE_DECODERS registry: IMSI, ICCID,
LI/PL, ADN-format (MSISDN/SDN/FDN/...), SMS records (SMSC + TPDU),
UST/SST/IST service tables, PLMN lists (+access tech), EF_DIR,
CBMI/R, ARR, PNN, ECC, SPN, LOCI, ACC, Phase, ISIM IMPI/DOMAIN/IMPU.
- File formats verified against TS 51.011 / TS 102 221 / TS 31.102
(PLMNwAcT is 5-byte entries; EF_SMS = status + SMSC + TPDU; ISIM
identities are 0x80 TLV).
- Offset != 0 READ BINARY/UPDATE BINARY is skipped (fragment reads).
- SEARCH RECORD results (record numbers) decoded in GET RESPONSE.
- GET RESPONSE summary now shows FCP file type/structure/size.
- New 'File data' section in the detail view.
Proactive commands with a body over 127 bytes (e.g. SET UP MENU with a
long item list) use a long-form length (0x81 NN / 0x82 NN NN) in their
D0 wrapper. Previously parse_tlv bailed on those, so the FETCH decoded
as a bare 'FETCH' without its command name or items.
Tests: 105 (long-form 1/2-byte, real SET UP MENU sample).
CLA 0x80 is the ETSI/3GPP-defined UICC/USIM class (TS 102 221 Table 10.3),
not ISO 7816-4 'proprietary'. Relabel 0x80 -> ETSI-defined (UICC/USIM),
0xA0 -> ETSI-defined (SIM/GSM), 0x00 -> inter-industry (ISO 7816-4);
drop the now-redundant note field.
- PLI_QUALIFIERS: TS 102 223 qualifier values (Location Info, IMEI,
NMR, Date/time, Timing Advance, Access Technology, etc.)
- _command_details_name(): appends the qualifier description to
PROVIDE LOCAL INFORMATION (type 0x26) in Command Details
- decode_cat (FETCH) and decode_tr_command (TR) now use it, so both
'cat_command' and 'response_to' carry the qualifier (e.g.
'PROVIDE LOCAL INFORMATION — IMEI')
tests: PLI qualifier cases (TR/FETCH, IMEI/location/date, non-PLI)
decode.py:
- _decode_fcp: FCP/FCI/FMD template — full bit-level file descriptor
(TS 102 221 Table 11.5: file type, structure, shareable, data coding,
record length, num records), file ID (+ KNOWN_FIDS name), DF name,
SFI, life cycle
- _decode_auth: GSM SRES+Kc, or 3G tag DB (RES/CK/IK/KC) / DC (AUTS)
- _decode_tr_result: TERMINAL RESPONSE Result TLV (code + name)
- _decode_response_for(ins, data): GET RESPONSE decodes its body using
the previous command's INS (SELECT→FCP, AUTHENTICATE→auth)
- decode_message wires response decoding for TR and GET RESPONSE
database.py: prev context now carries 'ins' (INS byte) via
_context_from_decoded, used by GET RESPONSE response decoding
tests: FCP, AUTH (GSM/3G), TR result, GET RESPONSE wiring (57 total)
decode.py: split decode_tr_command() out of decode_cat(); TR (0x14)
now stores the echoed proactive command type in 'response_to' instead
of 'cat_command', so it no longer overrides the INS name.
FETCH/ENVELOPE still use cat_command as the primary label.
tests: TR now asserts response_to + no cat_command
decode.py:
- decode_cat: TERMINAL RESPONSE (0x14) now extracts the proactive
command type from its echoed Command Details (tag 81) — no history
lookup needed since TR carries its own type
- decode_message gains prev param; GET RESPONSE (0xC0) resolves
'response_for' from the previous command when its SW1 was 0x61,
else None (orphaned)
- decode_sniff_msg threads prev through
database.py:
- _row_to_message accepts prev; new _decode_rows tracks previous-TPDU
context in sequence; get_messages/get_messages_after seed context
from the message before the window/cursor
tests: TR cat_command + GET RESPONSE context/orphaned cases (49 total)
decode_sniff_msg() dispatches to type-specific decoders:
- change: 4-byte flags bitmask → card insert/eject/reset/timeout
- fidi: 1-byte Fi/Di index → decoded values
- atr/pps: raw hex value
database.py now decodes all message types, not just tpdu.
Pure Python, no dependencies. Decodes raw TPDU bytes into
structured JSON: CLA bitfield, INS->name via APDU_SPEC table,
P1/P2 field breakdown, body extraction, SW name lookup.
~40 command types, 40+ SW codes, known FID notes.
database.py: _row_to_message() calls decode_message() for tpdu
messages, adding 'decoded' field to API responses.
Decoding happens at query time, not storage time — no schema
migration, all past sessions get decode retroactively.
catarrh