v1.9.0 -- CLK frequency in RST events:
- RST events (sub_type 0x10) append the measured CLK frequency when known:
[direction, level, flags, clk_hz_be32], flags bit 0 = rate present; the
3-byte form is kept when the rate is not yet measured. Value is
samplerate / _samples_per_clock from the existing 16-edge measurement (PPS
changes F/D, not the CLK rate). VCC events unchanged. Backward
compatible (old consumers read the first two bytes only); consumers can
compute data_rate = clk_hz x D / F from the ATR/PPS Fi/Di.
- Unit tests for the payload codec; README/README_RUS/AGENTS updated.
v1.9.1 -- T=0 NULL is not an SW1:
- The 'scan for SW1' loops accepted any 0x6X byte, including the NULL
procedure byte 0x60 (card busy), so 'NULL + real SW1' was mis-framed as
the status word: the phone traces' SELECT MF came out as ...3f00 6061 —
real SW1 0x61 eaten as SW2, real SW2 0x29 left on the wire and discarded
as a suspicious CLA (desync cascade).
- plausible_sw() now accepts 0x61-0x6F and 0x90-0x9F only, per
ISO 7816-3:2006 10.3.3 Table 11 ('6X' or '9X', EXCEPT '60'; ISO 7816-4
enforces '60' as an invalid SW1) and UICC_SPECS.md 1.8. All seven
SW1-detection sites use plausible_sw(); NULLs met while scanning are
logged as rate-limited wait extensions (_note_pre_sw) instead of
suspicious bytes.
- tools/vs_reader.py::_plausible_sw() mirrors the fix; regression vector
for the 00a40004023f006061 artifact.
Validation: 74/74 unit tests; baseline regenerated and IDENTICAL (the SW
fix is count-neutral -- only the SW bytes change); all 9 example pcaps
regenerated -- vs_reader OK, zero APDUs ending in 60 61, SELECT MF now
61 29 / 61 25.
- Split the PPS exchange into the two standard GSMTAP-SIM subtypes:
0x02 (PPS_REQ, raw request bytes, span ss..es_req) and 0x03 (PPS_RSP,
raw response bytes, span es_req..end), replacing the single 0x02 packet
with concatenated request+response that deviated from libosmocore's
gsmtap.h. Wireshark now dissects both halves; simtrace2-pysniff needs
no change (its importer already maps 0x03 to 'pps' and _decode_pps()
parses the 0xFF-leading response frame). PPS annotation/log unchanged.
- gsmtap_stream.py: GSMTAP_SIM_PPS_REQ/RSP constants; header field labels
aligned with libosmocore's struct (signal_dbm/snr_db).
- Docs: GSMTAP event tables (EN/RU) updated, PPS deviation note removed;
corrected the res-byte flag attribution -- upstream simtrace2 never
sets res, so the GSMTAP_FLAG_BAD_FCS carriage is this decoder's own
extension (semantics mirror simtrace2's USB data flags).
- Tests: assert the PPS subtype values; baseline regenerated (only the
version line and test listing differed -- no decode-metric changes).
68/68 unit tests.
Residual CONCAT mis-frames (4gmodem/A55_sim2/S21p_sim2) traced to a silent
5-byte drop at an invalid-INS T=0 header (0x0f 00 a4 08 04). Drop only the
stray leading byte and re-frame the remaining four via _replay so the real
command (00 a4 08 04 02 2f 00 -> 61 1c) is recovered.
- _note_discard()/_consume_first(): every consumed-but-unemitted byte is
now logged; idle 0x00/0xFF discards are rate-limited, real data always
gets an ANN_WARN annotation.
- All read-until-SW loops log skipped non-SW bytes.
- All traces: CONCAT 0; BAD_FCS/GARBAGE 0; test_8/test_7 RESULT OK;
47/47 unit tests; baseline byte-identical.
History rewritten to a single root commit so no example trace is stored
in the repo (fixtures are local-only, gitignored). README keeps only
generic <trace>.sr placeholders; AGENTS.md retains the fixture names.
catarrh