catarrh
81a7aace15
The live 500 in the Explore ('OTA send error: index out of range') was a
parser bug, reproduced with the live FETCH shape: _parse_proactive_header
walked the command TLVs reading the length as a single byte, so the card's
SEND SHORT MESSAGE with its 150-byte SMS TPDU (8B 81 96) was mis-walked
into the TPDU and eventually indexed past the end (val[2] on a short
slice) - the FETCH was left unanswered and the request answered 500.
- _ber_tlv_list/_proactive_body helpers: BER lengths (_ber_len_at) plus a
bounds check that stops at a truncated TLV instead of walking into the
value; _parse_proactive_header, _parse_display_text, _parse_select_item,
_parse_setup_menu_items, _tlv_map and _decode_poll_negotiation all use
them now (the same latent bug for any long-form TLV);
- _run_proactive_chain guards every step (header parse, proactive log,
on_fetch, BIP/timer handlers): an exception is logged with the offending
FETCH bytes and the TERMINAL RESPONSE is still sent - a decoder bug can
never leave a FETCH unanswered again;
- the expanded-registry report distinguishes a request error from a remote
SW: 'ELFs: request error (index out of range) - compact listing used'.
Regression tests: the live long-form FETCH shape parses (header + TLV map +
TPDU), truncated TLVs stop the walk, and a raising parser still gets a TR.
sw cache simple-v330; tests: 553 Python / 711 Node.
78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
const CACHE = 'simple-v330';
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const URLS = [
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'index.html',
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'help.html',
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'help-ru.html',
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'style.css',
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'sim.png',
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'favicon.svg',
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'icon-192.png',
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'icon-512.png',
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'manifest.json',
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'des-bundle.js',
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'aes-bundle.js',
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'sim.svg',
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'sim_anim.svg',
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'nosim.svg',
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'uicc_files.json',
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];
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self.addEventListener('install', e => {
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// Fetch the shell with `cache: 'reload'`: a plain addAll() would re-use
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// HTTP-cached copies, so a new SW version could precache a stale
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// style.css/index.html (the stale-style trap, v3.6.31).
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e.waitUntil(
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caches.open(CACHE).then(c =>
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Promise.all(URLS.map(u => fetch(u, { cache: 'reload' }).then(r => {
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if (r && r.ok) return c.put(u, r);
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})))
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)
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);
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self.skipWaiting();
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});
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self.addEventListener('activate', e => {
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e.waitUntil(
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caches.keys().then(keys =>
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Promise.all(keys.filter(k => k !== CACHE).map(k => caches.delete(k)))
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).then(() => clients.claim())
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);
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});
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const OFFLINE_RESPONSE = new Response('Offline: page not cached', {
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status: 503,
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statusText: 'Offline',
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headers: { 'Content-Type': 'text/plain' },
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});
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self.addEventListener('fetch', e => {
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if (!e.request.url.startsWith('http')) return;
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const path = new URL(e.request.url).pathname;
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if (path.startsWith('/api/')) return; // live data, never cache
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if (e.request.method !== 'GET') return;
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const isNavigate = e.request.mode === 'navigate';
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const isSwScript = path.endsWith('/sw.js');
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if (isNavigate) {
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e.respondWith(
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fetch(e.request).then(res => {
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const clone = res.clone();
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caches.open(CACHE).then(c => c.put(e.request, clone));
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return res;
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}).catch(() =>
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caches.match(e.request)
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.then(r => r || caches.match('index.html'))
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.then(r => r || OFFLINE_RESPONSE)
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)
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);
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} else if (isSwScript) {
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e.respondWith(fetch(e.request).catch(() => OFFLINE_RESPONSE));
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} else {
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e.respondWith(
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caches.match(e.request).then(r => r || fetch(e.request).then(res => {
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const clone = res.clone();
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caches.open(CACHE).then(c => c.put(e.request, clone));
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return res;
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}))
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);
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}
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}); |