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
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@@ -66,6 +66,20 @@ class TestCaptureManager(unittest.TestCase):
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self.assertIsNotNone(db.get_session(sid))
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self.assertEqual(db.count_messages(sid), 1)
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def test_non_apdu_packets_are_skipped(self):
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# A character-level or mis-sampled stream is not APDU-shaped and must
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# not be stored as decodable exchanges; valid rows pass.
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backend = _FakeBackend([
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('tpdu', bytes.fromhex('ff10957aff10957a'), 0),
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('tpdu', bytes.fromhex('2d6ccfb0ff'), 0),
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('tpdu', bytes.fromhex('00a40004023f00'), 0),
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])
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mgr, db = self._manager(backend)
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sid = mgr.start_session()
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self.assertEqual(mgr.stop_session(), sid)
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self.assertEqual(db.count_messages(sid), 1)
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self.assertEqual(mgr.skipped, 2)
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def test_direct_sniffer_device_disconnect(self):
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from simtrace_analyser.capture import DirectSniffer
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sn = DirectSniffer()
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