Extended logical channels: CLA 0-19, ATR card capabilities, MANAGE CHANNEL (v2.6.0)

- CLA decode (TS 102 221 §10.1.1/§10.3): standard channels 0-3 from b2-b1
  and the extended channels 4-19 from b4-b1.  The old further-format rule
  read only b2-b1 (channel 8 read as 6, 19 as 7) and the ETSI '11x0 xxxx'
  coding (0xC0-0xEF) was not handled at all; the class ranges now follow the
  specs (0x80-0x8F UICC, 0xA0-0xAF SIM, 0xC0-0xEF ETSI extended, 0x20-0x3F
  reserved, 0xFF invalid) and SM/chain are decoded per family — the SM
  extraction and the chaining bit (b5, not b6) were off by one bit
- per-channel state: database._decode_rows/_replay_context use the shared
  cla_channel() helper — before, CLA & 0x03 with no +4, so a channel-5
  SELECT clobbered channel 1's selection and a channel-8 one channel 0's
  (the local traces already open channels: 29 MANAGE CHANNEL opens, 1-2)
- COMPRION T=0 import: the synthesized GET RESPONSE keeps the channel —
  a plain CLA for 0-3 (as real terminals do) and 01x0 for 4-19
- ATR historical bytes: the UICC's COMPACT-TLV objects (TS 102 221 §6.3.1)
  with card service data, the card capabilities (ISO 7816-4 §8.1.1.2.7
  Table 88: assignment methods and max logical channels — the workspace
  cards announce 4 and "8 or more") and the status indicator ('00' trailing
  bytes / the '8Y' TLV); a truncated ATR no longer raises
- MANAGE CHANNEL success replies decode the assigned channel byte
- capture/import: a 'tpdu' packet that is not APDU-shaped (shorter than the
  header, CLA FF, ISO-reserved class) is skipped and counted, so a
  character-level or mis-sampled stream no longer pollutes the decode
  (the local DB's outlier sessions are exactly that)
- tests: CLA table vectors, per-channel state isolation on channels 8/12,
  COMPRION GR channels, filetrack extended channels, ATR compact-TLV and
  card-capability cases, the capture skip counter, the PWA rows; 527 Python
  + 47 Node tests
- README/README_RUS document the extended channels, card capabilities and
  the skip counter; PWA_VERSION/pyproject/version.py 2.6.0, SW v72

simtrace_analyser/server.py

@@ -9,8 +9,9 @@ from datetime import datetime
 from http.server import HTTPServer, BaseHTTPRequestHandler
 from urllib.parse import urlparse, parse_qs, quote
 
-from .database import Database
 from .capture import CaptureManager, GsmtapListener, DirectSniffer, _log
+from .database import Database
+from .decode import looks_like_apdu
 from .comprion import (ComprionError, decode_text, looks_like_comprion,
                        parse_comprion)
 from simtrace2_pysniff.gsmtap import build_gsmtap_packet, GSMTAP_SIM_ATR, GSMTAP_SIM_APDU
@@ -367,7 +368,13 @@ class RequestHandler(BaseHTTPRequestHandler):
         first_ts = packets[0][0]
         last_ts = packets[-1][0]
         rows = []
+        skipped = 0
         for ts, msg_type, payload, flags in packets:
+            # A captured 'tpdu' must at least be APDU-shaped; mis-sampled or
+            # character-level streams would only pollute the decode.
+            if msg_type == 'tpdu' and not looks_like_apdu(payload):
+                skipped += 1
+                continue
             elapsed = round(ts - first_ts, 6) if ts is not None else 0.0
             rows.append((max(0.0, elapsed), msg_type, payload, flags))
         self.db.insert_messages(session_id, rows)
@@ -382,12 +389,14 @@ class RequestHandler(BaseHTTPRequestHandler):
             self.db.close_session(session_id, duration)
 
         _log(f'Session imported: session={session_id} '
-             f'name={name or "(untitled)"} messages={len(packets)} '
-             f'bytes={sum(len(p) for _, _, p, _ in packets)}')
+             f'name={name or "(untitled)"} messages={len(rows)} '
+             f'skipped={skipped} '
+             f'bytes={sum(len(r[2]) for r in rows)}')
         self._send_json({
             'session_id': session_id,
             'name': name,
-            'message_count': len(packets),
+            'message_count': len(rows),
+            'skipped': skipped,
         })
 
     def _handle_import_comprion(self, params, raw):