Files
simple/frontend/sw.js
T
catarrh 162930eb96 feat: low-counter guard for every SCP80/RAM operation (v3.6.58)
A cntr_low PoR verdict is not recoverable by retrying - every packet whose
counter is not above the card's is rejected again - so it now stops the
operation and is stated as plain data instead of a generic PoR error.

Server:
- _cntr_low_fields(status, cntr) -> {cntr_low, card_cntr, suggested_cntr}
  (fixed-width wrap like the counter field); carried by /api/send-ota (plus
  an 'OTA CNTR-LOW: card counter ...' log line) and by the RAM install /
  install-app / cap-compat failure responses (from the failed step);
- _send_envelope's late-PoR poll now also runs after a warning ENVELOPE
  answer (62xx/63xx - the live card answers 6200 for a low counter) and
  _send_secured_packet passes the captured PoR on, so the verdict is named
  instead of a bare 'ENVELOPE failed' (that is why it only surfaced on the
  later SPI2=0x21 query in the live log).

PWA:
- spCntrLow(res) guards every flow; the Explore routes the whole run through
  a checked sendOta(), so the paginate/expanded loops stop, no further
  packet is sent and no counter is written back (delete and Send to Card
  check it too);
- the result states the card's counter and offers 'Go to preset'
  (ramGoToPreset: opens the failed operation's preset in the Cards tab for
  editing and focuses the counter field) - nothing is written
  automatically; the operation modal carries the same notice;
- help (EN/RU) documents the guard.

sw cache simple-v331; tests: 557 Python / 714 Node.
2026-09-30 11:10:54 +03:00

78 lines
2.1 KiB
JavaScript

const CACHE = 'simple-v331';
const URLS = [
'index.html',
'help.html',
'help-ru.html',
'style.css',
'sim.png',
'favicon.svg',
'icon-192.png',
'icon-512.png',
'manifest.json',
'des-bundle.js',
'aes-bundle.js',
'sim.svg',
'sim_anim.svg',
'nosim.svg',
'uicc_files.json',
];
self.addEventListener('install', e => {
// Fetch the shell with `cache: 'reload'`: a plain addAll() would re-use
// HTTP-cached copies, so a new SW version could precache a stale
// style.css/index.html (the stale-style trap, v3.6.31).
e.waitUntil(
caches.open(CACHE).then(c =>
Promise.all(URLS.map(u => fetch(u, { cache: 'reload' }).then(r => {
if (r && r.ok) return c.put(u, r);
})))
)
);
self.skipWaiting();
});
self.addEventListener('activate', e => {
e.waitUntil(
caches.keys().then(keys =>
Promise.all(keys.filter(k => k !== CACHE).map(k => caches.delete(k)))
).then(() => clients.claim())
);
});
const OFFLINE_RESPONSE = new Response('Offline: page not cached', {
status: 503,
statusText: 'Offline',
headers: { 'Content-Type': 'text/plain' },
});
self.addEventListener('fetch', e => {
if (!e.request.url.startsWith('http')) return;
const path = new URL(e.request.url).pathname;
if (path.startsWith('/api/')) return; // live data, never cache
if (e.request.method !== 'GET') return;
const isNavigate = e.request.mode === 'navigate';
const isSwScript = path.endsWith('/sw.js');
if (isNavigate) {
e.respondWith(
fetch(e.request).then(res => {
const clone = res.clone();
caches.open(CACHE).then(c => c.put(e.request, clone));
return res;
}).catch(() =>
caches.match(e.request)
.then(r => r || caches.match('index.html'))
.then(r => r || OFFLINE_RESPONSE)
)
);
} else if (isSwScript) {
e.respondWith(fetch(e.request).catch(() => OFFLINE_RESPONSE));
} else {
e.respondWith(
caches.match(e.request).then(r => r || fetch(e.request).then(res => {
const clone = res.clone();
caches.open(CACHE).then(c => c.put(e.request, clone));
return res;
}))
);
}
});