Files
simtrace-analyser/frontend/sw.js
T
catarrh 6da5acca21 Decode C-APDU commands inside secured-packet payloads (frontend)
The secured data of an SCP80 packet is a stream of C-APDUs (e.g.
SELECT / UPDATE BINARY sequences for OTA file management). Vendor the
working C-APDU parser from the otaman project (frontend-only, ~10 KB):
PARSE_INS table, describeP1P2, describeInstallDataLv, parseOneApdu and
parseCompactApdus (concatenated streams with implied-CLA handling).

Detail view now shows an "Application message" section for secured
packets:
- unciphered packets (SPI1.b3=0): the on-wire secured data decodes
  immediately;
- ciphered packets: decodes from the client-side decrypted payload
  once the user supplies the key (before that, ciphertext rows only);
- each C-APDU renders as a numbered row with indented CLA/INS/P1/P2/
  Lc/Data/Le + descriptions (nested LV for INSTALL), with implied-CLA
  annotation; raw-hex fallback when nothing parses;
- vendored parser uppercases input (otaman's expects uppercase hex).

Tests deferred to the follow-up step (node:test infra, planned).
Version 1.20.0, SW cache simtrace-analyser-v28.
2026-08-24 21:55:15 +03:00

49 lines
1.4 KiB
JavaScript

const CACHE = 'simtrace-analyser-v28';
const PRECACHE = [
'index.html',
'manifest.json',
'icon-192.png',
'icon-512.png',
'favicon.png',
'sim-analyser.svg',
'sim-analyser-light.svg',
];
self.addEventListener('install', e => {
self.skipWaiting();
e.waitUntil(
caches.open(CACHE)
.then(cache => cache.addAll(PRECACHE))
.then(() => console.log('SW: precache done'))
.catch(err => console.error('SW: precache failed', err))
);
});
self.addEventListener('activate', e => {
e.waitUntil(
caches.keys()
.then(keys => Promise.all(
keys.filter(k => k !== CACHE).map(k => caches.delete(k))
))
.then(() => self.clients.claim())
.then(() => console.log('SW: activated, controlling clients'))
);
});
self.addEventListener('fetch', e => {
// Network-first: the local server is always up, so always serve fresh
// content and fall back to cache only when offline.
if (!e.request.url.startsWith('http')) return;
if (e.request.method !== 'GET') return;
e.respondWith(
fetch(e.request)
.then(r => {
const clone = r.clone();
caches.open(CACHE).then(c => c.put(e.request, clone)).catch(() => {});
return r;
})
.catch(() => caches.match(e.request))
);
});