catarrh
083924c976
Add context-aware decoding for GET RESPONSE and TERMINAL RESPONSE
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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)
2026-08-12 19:41:57 +03:00
catarrh
2a58fec0a3
Fix dropped change flags + FIDI parsing
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- capture.py: DirectSniffer/GsmtapListener yield (type, data, flags),
CaptureManager passes flags to insert_message (change flags were
previously dropped, leaving every change row with flags=0)
- protocol.py: add _parse_fidi (1-byte value) — FIDI was mis-mapped to
_parse_change (4-byte flags), so FIDI messages were silently dropped
- database.py: pass flags into decode_sniff_msg
- decode.py: decode_change(flags) reads flags directly; decode_sniff_msg
gains flags parameter; change messages no longer require non-empty data
- tests: fix FIDI test, add change/fidi decode tests (43 total)
2026-08-12 19:25:14 +03:00
catarrh
11d0f29b6a
Add CAT (TS 102 223) command decoding + fix AUTHENTICATE naming
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- CAT_COMMAND_TYPES: complete Type of Command table from TS 102 223 §9.4
- ENVELOPE_TYPES: D1-D7 envelope tags
- parse_tlv(): minimal BER-TLV parser
- decode_cat(): FETCH → proactive command name (via D0→81 type byte);
ENVELOPE → envelope type name
- AUTHENTICATE (0x88/0x89) unified to 'AUTHENTICATE' (no suffix)
- decoded dict gains 'cat_command' field for FETCH/ENVELOPE
- tests/test_decode.py: 14 new tests (TLV, naming, CAT, tables)
2026-08-12 18:26:58 +03:00
catarrh
73b0277ef7
Initial commit: simtrace2-pysniff v0.1.0
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Python-based SIMtrace2 sniffer — drop-in replacement for simtrace2-sniff.
Single dependency (pyusb), auto-reconnect, GSMTAP/PCAP output, library API.
Modules:
protocol.py — SIMtrace2 USB sniffing protocol parser
device.py — USB discovery + SniffSession with exponential backoff reconnect
gsmtap.py — GSMTAP UDP sender for Wireshark
pcap.py — PCAP file writer (LINKTYPE_GSMTAP)
dump.py — hex dump formatters + file output
__main__.py — CLI entry point
Startup script sniff-start.sh handles udev permission checks and shows
install instructions. udev rule uses TAG+=uaccess (systemd-logind ACL).
2026-08-10 23:17:04 +03:00
catarrh