Translated ['src/pentesting-web/h2c-smuggling.md'] to sr

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@ -6,15 +6,15 @@
#### HTTP2 Over Cleartext (H2C) <a href="#http2-over-cleartext-h2c" id="http2-over-cleartext-h2c"></a>
H2C, ili **http2 preko čistog teksta**, odstupa od norme prolaznih HTTP veza tako što nadograđuje standardnu HTTP **vezu na trajnu**. Ova nadograđena veza koristi http2 binarni protokol za kontinuiranu komunikaciju, za razliku od jedinstvene prirode zahteva čistog HTTP-a.
H2C, ili **http2 preko čistog teksta**, odstupa od norme prolaznih HTTP veza tako što unapređuje standardnu HTTP **vezu u trajnu**. Ova unapređena veza koristi http2 binarni protokol za kontinuiranu komunikaciju, za razliku od jedinstvene prirode zahteva čistog HTTP-a.
Suština problema sa krijumčarenjem nastaje upotrebom **obrnute proxy**. Obično, obrnuta proxy obrađuje i prosleđuje HTTP zahteve ka backend-u, vraćajući odgovor backend-a nakon toga. Međutim, kada je `Connection: Upgrade` zaglavlje prisutno u HTTP zahtevu (što se obično vidi sa websocket vezama), obrnuta **proxy održava trajnu vezu** između klijenta i servera, olakšavajući kontinuiranu razmenu potrebnu za određene protokole. Za H2C veze, pridržavanje RFC zahteva prisustvo tri specifična zaglavlja:
Suština problema sa krijumčarenjem nastaje upotrebom **obrnute proxy**. Obično, obrnuta proxy obrađuje i prosleđuje HTTP zahteve ka backend-u, vraćajući odgovor backend-a nakon toga. Međutim, kada je `Connection: Upgrade` zaglavlje prisutno u HTTP zahtevu (što se obično vidi sa websocket vezama), obrnuta **proxy održava trajnu vezu** između klijenta i servera, olakšavajući kontinuiranu razmenu potrebnu za određene protokole. Za H2C veze, pridržavanje RFC-a zahteva prisustvo tri specifična zaglavlja:
```
Upgrade: h2c
HTTP2-Settings: AAMAAABkAARAAAAAAAIAAAAA
Connection: Upgrade, HTTP2-Settings
```
Vulnerabilnost nastaje kada, nakon nadogradnje veze, obrnuti proxy prestane da upravlja pojedinačnim zahtevima, pretpostavljajući da je njegov posao usmeravanja završen nakon uspostavljanja veze. Iskorišćavanje H2C Smuggling-a omogućava zaobilaženje pravila obrnute proxy primenjenih tokom obrade zahteva, kao što su usmeravanje zasnovano na putanji, autentifikacija i WAF obrada, pod pretpostavkom da je H2C veza uspešno uspostavljena.
Vulnerabilnost nastaje kada, nakon nadogradnje veze, obrnuti proxy prestane da upravlja pojedinačnim zahtevima, pretpostavljajući da je njegov posao usmeravanja završen nakon uspostavljanja veze. Iskorišćavanje H2C Smuggling-a omogućava zaobilaženje pravila obrnute proxy koje se primenjuju tokom obrade zahteva, kao što su usmeravanje zasnovano na putanji, autentifikacija i WAF obrada, pod pretpostavkom da je H2C veza uspešno uspostavljena.
#### Vulnerable Proxies <a href="#exploitation" id="exploitation"></a>
@ -40,7 +40,7 @@ S druge strane, ove usluge ne prosleđuju inherentno oba zaglavlja tokom proxy-p
Važno je napomenuti da ne svi serveri inherentno prosleđuju zaglavlja potrebna za usklađenu H2C nadogradnju. Kao takvi, serveri poput AWS ALB/CLB, NGINX i Apache Traffic Server, među ostalima, prirodno blokiraju H2C veze. Ipak, vredi testirati sa neusklađenom varijantom `Connection: Upgrade`, koja isključuje `HTTP2-Settings` vrednost iz `Connection` zaglavlja, jer neki backend-ovi možda neće biti u skladu sa standardima.
> [!CAUTION]
> Bez obzira na specifičnu **putanju** određenu u `proxy_pass` URL-u (npr., `http://backend:9999/socket.io`), uspostavljena veza podrazumevano se prebacuje na `http://backend:9999`. Ovo omogućava interakciju sa bilo kojom putanjom unutar tog internog krajnjeg tačke, koristeći ovu tehniku. Kao rezultat, specifikacija putanje u `proxy_pass` URL-u ne ograničava pristup.
> Bez obzira na specifičnu **putanju** određenu u `proxy_pass` URL-u (npr., `http://backend:9999/socket.io`), uspostavljena veza podrazumevano se vraća na `http://backend:9999`. Ovo omogućava interakciju sa bilo kojom putanjom unutar tog internog krajnjeg tačke, koristeći ovu tehniku. Kao rezultat, specifikacija putanje u `proxy_pass` URL-u ne ograničava pristup.
Alati [**h2csmuggler by BishopFox**](https://github.com/BishopFox/h2csmuggler) i [**h2csmuggler by assetnote**](https://github.com/assetnote/h2csmuggler) olakšavaju pokušaje da se **zaobiđu zaštite koje nameće proxy** uspostavljanjem H2C veze, čime se omogućava pristup resursima zaštićenim proxy-jem.
@ -48,7 +48,7 @@ Za dodatne informacije o ovoj vulnerabilnosti, posebno u vezi sa NGINX-om, pogle
## Websocket Smuggling
Websocket smuggling, za razliku od kreiranja HTTP2 tunela do krajnje tačke dostupne putem proxy-ja, uspostavlja Websocket tunel kako bi zaobišao potencijalna ograničenja proxy-ja i omogućio direktnu komunikaciju sa krajnjom tačkom.
Websocket smuggling, za razliku od kreiranja HTTP2 tunela do krajnje tačke dostupne putem proxy-ja, uspostavlja Websocket tunel kako bi zaobišao potencijalna ograničenja proxy-ja i olakšao direktnu komunikaciju sa krajnjom tačkom.
### Scenario 1
@ -58,7 +58,7 @@ U ovom scenariju, backend koji nudi javni WebSocket API zajedno sa nedostupnim i
2. Backend odgovara sa status kodom `426`, ukazujući na pogrešnu verziju protokola u `Sec-WebSocket-Version` zaglavlju. Obrnuti proxy, zanemarujući status odgovora backend-a, pretpostavlja spremnost za WebSocket komunikaciju i prosleđuje odgovor klijentu.
3. Kao rezultat, obrnuti proxy je zavaravan da veruje da je WebSocket veza uspostavljena između klijenta i backend-a, dok je u stvarnosti backend odbio Upgrade zahtev. Ipak, proxy održava otvorenu TCP ili TLS vezu između klijenta i backend-a, omogućavajući klijentu neograničen pristup privatnom REST API-ju putem ove veze.
Pogođeni obrnuti proxy-ji uključuju Varnish, koji je odbio da reši problem, i Envoy proxy verziju 1.8.0 ili stariju, dok su novije verzije izmenile mehanizam nadogradnje. Drugi proxy-ji takođe mogu biti podložni.
Pogođeni obrnuti proxy-ji uključuju Varnish, koji je odbio da reši problem, i Envoy proxy verziju 1.8.0 ili stariju, dok su novije verzije promenile mehanizam nadogradnje. Drugi proxy-ji takođe mogu biti podložni.
![https://github.com/0ang3el/websocket-smuggle/raw/master/img/2-4.png](https://github.com/0ang3el/websocket-smuggle/raw/master/img/2-4.png)

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@ -1,554 +1,40 @@
/*
Polyfill so requestIdleCallback works everywhere (IE 11/Safari)
*/
if (typeof window.requestIdleCallback !== "function") {
window.requestIdleCallback = function (cb) {
const start = Date.now();
return setTimeout(function () {
cb({
didTimeout: false,
timeRemaining: function () {
return Math.max(0, 50 - (Date.now() - start));
/* ht_searcher.js --------------------------------------------------------- */
(() => {
const WRAPPER = document.getElementById('search-wrapper');
const TOGGLE = document.getElementById('search-toggle');
const INPUT = document.getElementById('searchbar');
const LIST = document.getElementById('searchresults');
const HOTKEY = 83; // “s”
let worker, debounce;
function startWorker() {
if (worker) return;
worker = new Worker('/search-worker.js', { type:'module' });
worker.onmessage = ({data}) => {
LIST.innerHTML = data.slice(0,30).map(h =>
`<li><a href="${h.doc.url}">${h.doc.title}</a></li>`
).join('');
};
}
async function openUI() {
WRAPPER.classList.remove('hidden');
INPUT.focus();
startWorker(); // fetches CDN/GitHub in parallel
}
TOGGLE.addEventListener('click', openUI);
document.addEventListener('keydown', e => {
if (!e.metaKey && !e.ctrlKey && !e.altKey && e.keyCode === HOTKEY) {
e.preventDefault(); openUI();
}
});
}, 1);
};
window.cancelIdleCallback = window.clearTimeout;
}
/*
search.js
*/
"use strict";
window.search = window.search || {};
(function search(search) {
// Search functionality
//
// You can use !hasFocus() to prevent keyhandling in your key
// event handlers while the user is typing their search.
if (!Mark || !elasticlunr) {
return;
}
//IE 11 Compatibility from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
if (!String.prototype.startsWith) {
String.prototype.startsWith = function(search, pos) {
return this.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
};
}
var search_wrap = document.getElementById('search-wrapper'),
search_modal = document.getElementById('search-modal'),
searchbar = document.getElementById('searchbar'),
searchbar_outer = document.getElementById('searchbar-outer'),
searchresults = document.getElementById('searchresults'),
searchresults_outer = document.getElementById('searchresults-outer'),
searchresults_header = document.getElementById('searchresults-header'),
searchicon = document.getElementById('search-toggle'),
content = document.getElementById('content'),
searchindex = null,
doc_urls = [],
results_options = {
teaser_word_count: 30,
limit_results: 30,
},
search_options = {
bool: "AND",
expand: true,
fields: {
title: {boost: 1},
body: {boost: 1},
breadcrumbs: {boost: 0}
}
},
mark_exclude = [],
marker = new Mark(content),
current_searchterm = "",
URL_SEARCH_PARAM = 'search',
URL_MARK_PARAM = 'highlight',
teaser_count = 0,
SEARCH_HOTKEY_KEYCODE = 83,
ESCAPE_KEYCODE = 27,
DOWN_KEYCODE = 40,
UP_KEYCODE = 38,
SELECT_KEYCODE = 13;
function hasFocus() {
return searchbar === document.activeElement;
}
function removeChildren(elem) {
while (elem.firstChild) {
elem.removeChild(elem.firstChild);
}
}
// Helper to parse a url into its building blocks.
function parseURL(url) {
var a = document.createElement('a');
a.href = url;
return {
source: url,
protocol: a.protocol.replace(':',''),
host: a.hostname,
port: a.port,
params: (function(){
var ret = {};
var seg = a.search.replace(/^\?/,'').split('&');
var len = seg.length, i = 0, s;
for (;i<len;i++) {
if (!seg[i]) { continue; }
s = seg[i].split('=');
ret[s[0]] = s[1];
}
return ret;
})(),
file: (a.pathname.match(/\/([^/?#]+)$/i) || [,''])[1],
hash: a.hash.replace('#',''),
path: a.pathname.replace(/^([^/])/,'/$1')
};
}
// Helper to recreate a url string from its building blocks.
function renderURL(urlobject) {
var url = urlobject.protocol + "://" + urlobject.host;
if (urlobject.port != "") {
url += ":" + urlobject.port;
}
url += urlobject.path;
var joiner = "?";
for(var prop in urlobject.params) {
if(urlobject.params.hasOwnProperty(prop)) {
url += joiner + prop + "=" + urlobject.params[prop];
joiner = "&";
}
}
if (urlobject.hash != "") {
url += "#" + urlobject.hash;
}
return url;
}
// Helper to escape html special chars for displaying the teasers
var escapeHTML = (function() {
var MAP = {
'&': '&amp;',
'<': '&lt;',
'>': '&gt;',
'"': '&#34;',
"'": '&#39;'
};
var repl = function(c) { return MAP[c]; };
return function(s) {
return s.replace(/[&<>'"]/g, repl);
};
INPUT.addEventListener('input', e => {
clearTimeout(debounce);
debounce = setTimeout(() => {
worker?.postMessage(e.target.value.trim());
}, 120); // small debounce keeps typing smooth
});
})();
function formatSearchMetric(count, searchterm) {
if (count == 1) {
return count + " search result for '" + searchterm + "':";
} else if (count == 0) {
return "No search results for '" + searchterm + "'.";
} else {
return count + " search results for '" + searchterm + "':";
}
}
function formatSearchResult(result, searchterms) {
var teaser = makeTeaser(escapeHTML(result.doc.body), searchterms);
teaser_count++;
// The ?URL_MARK_PARAM= parameter belongs inbetween the page and the #heading-anchor
var url = doc_urls[result.ref].split("#");
if (url.length == 1) { // no anchor found
url.push("");
}
// encodeURIComponent escapes all chars that could allow an XSS except
// for '. Due to that we also manually replace ' with its url-encoded
// representation (%27).
var searchterms = encodeURIComponent(searchterms.join(" ")).replace(/\'/g, "%27");
return '<a href="' + path_to_root + url[0] + '?' + URL_MARK_PARAM + '=' + searchterms + '#' + url[1]
+ '" aria-details="teaser_' + teaser_count + '">' + result.doc.breadcrumbs
+ '<span class="teaser" id="teaser_' + teaser_count + '" aria-label="Search Result Teaser">'
+ teaser + '</span>' + '</a>';
}
function makeTeaser(body, searchterms) {
// The strategy is as follows:
// First, assign a value to each word in the document:
// Words that correspond to search terms (stemmer aware): 40
// Normal words: 2
// First word in a sentence: 8
// Then use a sliding window with a constant number of words and count the
// sum of the values of the words within the window. Then use the window that got the
// maximum sum. If there are multiple maximas, then get the last one.
// Enclose the terms in <em>.
var stemmed_searchterms = searchterms.map(function(w) {
return elasticlunr.stemmer(w.toLowerCase());
});
var searchterm_weight = 40;
var weighted = []; // contains elements of ["word", weight, index_in_document]
// split in sentences, then words
var sentences = body.toLowerCase().split('. ');
var index = 0;
var value = 0;
var searchterm_found = false;
for (var sentenceindex in sentences) {
var words = sentences[sentenceindex].split(' ');
value = 8;
for (var wordindex in words) {
var word = words[wordindex];
if (word.length > 0) {
for (var searchtermindex in stemmed_searchterms) {
if (elasticlunr.stemmer(word).startsWith(stemmed_searchterms[searchtermindex])) {
value = searchterm_weight;
searchterm_found = true;
}
};
weighted.push([word, value, index]);
value = 2;
}
index += word.length;
index += 1; // ' ' or '.' if last word in sentence
};
index += 1; // because we split at a two-char boundary '. '
};
if (weighted.length == 0) {
return body;
}
var window_weight = [];
var window_size = Math.min(weighted.length, results_options.teaser_word_count);
var cur_sum = 0;
for (var wordindex = 0; wordindex < window_size; wordindex++) {
cur_sum += weighted[wordindex][1];
};
window_weight.push(cur_sum);
for (var wordindex = 0; wordindex < weighted.length - window_size; wordindex++) {
cur_sum -= weighted[wordindex][1];
cur_sum += weighted[wordindex + window_size][1];
window_weight.push(cur_sum);
};
if (searchterm_found) {
var max_sum = 0;
var max_sum_window_index = 0;
// backwards
for (var i = window_weight.length - 1; i >= 0; i--) {
if (window_weight[i] > max_sum) {
max_sum = window_weight[i];
max_sum_window_index = i;
}
};
} else {
max_sum_window_index = 0;
}
// add <em/> around searchterms
var teaser_split = [];
var index = weighted[max_sum_window_index][2];
for (var i = max_sum_window_index; i < max_sum_window_index+window_size; i++) {
var word = weighted[i];
if (index < word[2]) {
// missing text from index to start of `word`
teaser_split.push(body.substring(index, word[2]));
index = word[2];
}
if (word[1] == searchterm_weight) {
teaser_split.push("<em>")
}
index = word[2] + word[0].length;
teaser_split.push(body.substring(word[2], index));
if (word[1] == searchterm_weight) {
teaser_split.push("</em>")
}
};
return teaser_split.join('');
}
function init(config) {
results_options = config.results_options;
search_options = config.search_options;
searchbar_outer = config.searchbar_outer;
doc_urls = config.doc_urls;
searchindex = elasticlunr.Index.load(config.index);
// Set up events
searchicon.addEventListener('click', function(e) { searchIconClickHandler(); }, false);
search_wrap.addEventListener('click', function(e) { searchIconClickHandler(); }, false);
search_modal.addEventListener('click', function(e) { e.stopPropagation(); }, false);
searchbar.addEventListener('keyup', function(e) { searchbarKeyUpHandler(); }, false);
document.addEventListener('keydown', function(e) { globalKeyHandler(e); }, false);
// If the user uses the browser buttons, do the same as if a reload happened
window.onpopstate = function(e) { doSearchOrMarkFromUrl(); };
// Suppress "submit" events so the page doesn't reload when the user presses Enter
document.addEventListener('submit', function(e) { e.preventDefault(); }, false);
// If reloaded, do the search or mark again, depending on the current url parameters
doSearchOrMarkFromUrl();
}
function unfocusSearchbar() {
// hacky, but just focusing a div only works once
var tmp = document.createElement('input');
tmp.setAttribute('style', 'position: absolute; opacity: 0;');
searchicon.appendChild(tmp);
tmp.focus();
tmp.remove();
}
// On reload or browser history backwards/forwards events, parse the url and do search or mark
function doSearchOrMarkFromUrl() {
// Check current URL for search request
var url = parseURL(window.location.href);
if (url.params.hasOwnProperty(URL_SEARCH_PARAM)
&& url.params[URL_SEARCH_PARAM] != "") {
showSearch(true);
searchbar.value = decodeURIComponent(
(url.params[URL_SEARCH_PARAM]+'').replace(/\+/g, '%20'));
searchbarKeyUpHandler(); // -> doSearch()
} else {
showSearch(false);
}
if (url.params.hasOwnProperty(URL_MARK_PARAM)) {
var words = decodeURIComponent(url.params[URL_MARK_PARAM]).split(' ');
marker.mark(words, {
exclude: mark_exclude
});
var markers = document.querySelectorAll("mark");
function hide() {
for (var i = 0; i < markers.length; i++) {
markers[i].classList.add("fade-out");
window.setTimeout(function(e) { marker.unmark(); }, 300);
}
}
for (var i = 0; i < markers.length; i++) {
markers[i].addEventListener('click', hide);
}
}
}
// Eventhandler for keyevents on `document`
function globalKeyHandler(e) {
if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey || e.target.type === 'textarea' || e.target.type === 'text' || !hasFocus() && /^(?:input|select|textarea)$/i.test(e.target.nodeName)) { return; }
if (e.keyCode === ESCAPE_KEYCODE) {
e.preventDefault();
searchbar.classList.remove("active");
setSearchUrlParameters("",
(searchbar.value.trim() !== "") ? "push" : "replace");
if (hasFocus()) {
unfocusSearchbar();
}
showSearch(false);
marker.unmark();
} else if (!hasFocus() && e.keyCode === SEARCH_HOTKEY_KEYCODE) {
e.preventDefault();
showSearch(true);
window.scrollTo(0, 0);
searchbar.select();
} else if (hasFocus() && e.keyCode === DOWN_KEYCODE) {
e.preventDefault();
unfocusSearchbar();
searchresults.firstElementChild.classList.add("focus");
} else if (!hasFocus() && (e.keyCode === DOWN_KEYCODE
|| e.keyCode === UP_KEYCODE
|| e.keyCode === SELECT_KEYCODE)) {
// not `:focus` because browser does annoying scrolling
var focused = searchresults.querySelector("li.focus");
if (!focused) return;
e.preventDefault();
if (e.keyCode === DOWN_KEYCODE) {
var next = focused.nextElementSibling;
if (next) {
focused.classList.remove("focus");
next.classList.add("focus");
}
} else if (e.keyCode === UP_KEYCODE) {
focused.classList.remove("focus");
var prev = focused.previousElementSibling;
if (prev) {
prev.classList.add("focus");
} else {
searchbar.select();
}
} else { // SELECT_KEYCODE
window.location.assign(focused.querySelector('a'));
}
}
}
function showSearch(yes) {
if (yes) {
search_wrap.classList.remove('hidden');
searchicon.setAttribute('aria-expanded', 'true');
} else {
search_wrap.classList.add('hidden');
searchicon.setAttribute('aria-expanded', 'false');
var results = searchresults.children;
for (var i = 0; i < results.length; i++) {
results[i].classList.remove("focus");
}
}
}
function showResults(yes) {
if (yes) {
searchresults_outer.classList.remove('hidden');
} else {
searchresults_outer.classList.add('hidden');
}
}
// Eventhandler for search icon
function searchIconClickHandler() {
if (search_wrap.classList.contains('hidden')) {
showSearch(true);
window.scrollTo(0, 0);
searchbar.select();
} else {
showSearch(false);
}
}
// Eventhandler for keyevents while the searchbar is focused
function searchbarKeyUpHandler() {
var searchterm = searchbar.value.trim();
if (searchterm != "") {
searchbar.classList.add("active");
doSearch(searchterm);
} else {
searchbar.classList.remove("active");
showResults(false);
removeChildren(searchresults);
}
setSearchUrlParameters(searchterm, "push_if_new_search_else_replace");
// Remove marks
marker.unmark();
}
// Update current url with ?URL_SEARCH_PARAM= parameter, remove ?URL_MARK_PARAM and #heading-anchor .
// `action` can be one of "push", "replace", "push_if_new_search_else_replace"
// and replaces or pushes a new browser history item.
// "push_if_new_search_else_replace" pushes if there is no `?URL_SEARCH_PARAM=abc` yet.
function setSearchUrlParameters(searchterm, action) {
var url = parseURL(window.location.href);
var first_search = ! url.params.hasOwnProperty(URL_SEARCH_PARAM);
if (searchterm != "" || action == "push_if_new_search_else_replace") {
url.params[URL_SEARCH_PARAM] = searchterm;
delete url.params[URL_MARK_PARAM];
url.hash = "";
} else {
delete url.params[URL_MARK_PARAM];
delete url.params[URL_SEARCH_PARAM];
}
// A new search will also add a new history item, so the user can go back
// to the page prior to searching. A updated search term will only replace
// the url.
if (action == "push" || (action == "push_if_new_search_else_replace" && first_search) ) {
history.pushState({}, document.title, renderURL(url));
} else if (action == "replace" || (action == "push_if_new_search_else_replace" && !first_search) ) {
history.replaceState({}, document.title, renderURL(url));
}
}
function doSearch(searchterm) {
// Don't search the same twice
if (current_searchterm == searchterm) { return; }
else { current_searchterm = searchterm; }
if (searchindex == null) { return; }
// Do the actual search
var results = searchindex.search(searchterm, search_options);
var resultcount = Math.min(results.length, results_options.limit_results);
// Display search metrics
searchresults_header.innerText = formatSearchMetric(resultcount, searchterm);
// Clear and insert results
var searchterms = searchterm.split(' ');
removeChildren(searchresults);
for(var i = 0; i < resultcount ; i++){
var resultElem = document.createElement('li');
resultElem.innerHTML = formatSearchResult(results[i], searchterms);
searchresults.appendChild(resultElem);
}
// Display results
showResults(true);
}
(async function loadSearchIndex(lang = window.lang || "en") {
const branch = lang === "en" ? "master" : lang;
const rawUrl =
`https://raw.githubusercontent.com/HackTricks-wiki/hacktricks/refs/heads/${branch}/searchindex.js`;
const localJs = "/searchindex.js";
const TIMEOUT_MS = 10_000;
const injectScript = (src) =>
new Promise((resolve, reject) => {
const s = document.createElement("script");
s.src = src;
s.onload = () => resolve(src);
s.onerror = (e) => reject(e);
document.head.appendChild(s);
});
try {
/* 1 — download raw JS from GitHub */
const controller = new AbortController();
const timer = setTimeout(() => controller.abort(), TIMEOUT_MS);
const res = await fetch(rawUrl, { signal: controller.signal });
clearTimeout(timer);
if (!res.ok) throw new Error(`HTTP ${res.status}`);
/* 2 — wrap in a Blob so the browser sees application/javascript */
const code = await res.text();
const blobUrl = URL.createObjectURL(
new Blob([code], { type: "application/javascript" })
);
/* 3 — execute it */
await injectScript(blobUrl);
/* PATCH
heavy parsing now deferred to idle time
*/
requestIdleCallback(() => init(window.search));
return; // ✔ UI remains responsive
} catch (eRemote) {
console.warn("Remote JS failed →", eRemote);
}
/* ───────── fallback: local copy ───────── */
try {
await injectScript(localJs);
/* ───────────── PATCH ───────────── */
requestIdleCallback(() => init(window.search));
return;
} catch (eLocal) {
console.error("Local JS failed →", eLocal);
}
})();
// Exported functions
search.hasFocus = hasFocus;
})(window.search);

40
theme/search-worker.js Normal file
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@ -0,0 +1,40 @@
/* search-worker.js ------------------------------------------------------- */
/* Make code written for window work in a worker: */
self.window = self;
////////////////////////////////////////////////////////////////////////////
// 1. elasticlunr.min.js : CDN first → local fallback
////////////////////////////////////////////////////////////////////////////
try {
importScripts('https://cdn.jsdelivr.net/npm/elasticlunr@0.9.5/elasticlunr.min.js');
} catch (e) {
importScripts('/elasticlunr.min.js'); // ship this with your site
}
////////////////////////////////////////////////////////////////////////////
// 2. searchindex.js : GitHub Raw first → local fallback
// We fetch → wrap in a Blob({type:'application/javascript'}) to bypass
// GitHubs text/plain + nosniff MIME blocking.
////////////////////////////////////////////////////////////////////////////
try {
const res = await fetch(
'https://raw.githubusercontent.com/HackTricks-wiki/hacktricks/refs/heads/master/searchindex.js',
{mode: 'cors'}
);
if (!res.ok) throw new Error(res.status);
const blobUrl = URL.createObjectURL(
new Blob([await res.text()], { type:'application/javascript' })
);
importScripts(blobUrl); // correct MIME, runs once
} catch (e) {
importScripts('/searchindex.js'); // offline fallback
}
////////////////////////////////////////////////////////////////////////////
// 3. Build the index once and answer queries
////////////////////////////////////////////////////////////////////////////
const idx = elasticlunr.Index.load(self.search.index);
self.onmessage = ({data: q}) => {
postMessage(idx.search(q, { bool:'AND', expand:true }));
};