mirror of
https://github.com/0xMarcio/cve.git
synced 2026-10-27 16:51:03 +00:00
0xMarcio
79da26dd45
A pass over 104,043 entries costs 25-125ms, which is fast enough to feel instant once but not nine times in a row while a word is typed. Coalesce a burst at 160ms, skip single-character queries that match most of the index without narrowing anything, and total the PoC count during the scan rather than walking the matches again to display it.
572 lines
19 KiB
JavaScript
572 lines
19 KiB
JavaScript
'use strict';
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const REPLACE_STRINGS = ['HackTheBox - ', 'VulnHub - ', 'UHC - '];
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const PAGE_SIZE = 50;
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const POC_PREVIEW = 5;
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const TREND_ROWS = 20;
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const MIN_QUERY = 2;
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const state = {
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query: '',
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mode: 'TRENDING',
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shown: PAGE_SIZE,
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descOpen: new Set(),
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pocOpen: new Set(),
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ready: false,
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results: []
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};
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let dataset = [];
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let repoMeta = {};
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let trending = [];
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let indexMeta = null;
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/* ---- formatting -------------------------------------------------------- */
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function escapeHTML(value) {
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return String(value == null ? '' : value).replace(/[&<>"']/g, ch => ({
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'&': '&', '<': '<', '>': '>', '"': '"', "'": '''
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}[ch]));
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}
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function formatCount(n) {
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return n.toLocaleString('en-US');
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}
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function formatStars(n) {
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return n >= 1000 ? (n / 1000).toFixed(1) + 'k' : String(n);
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}
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function hoursSince(iso) {
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if (!iso) return null;
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const then = Date.parse(iso.length === 10 ? iso + 'T00:00:00Z' : iso);
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if (Number.isNaN(then)) return null;
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return (Date.now() - then) / 36e5;
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}
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/** Long form for the trending table: "3 hours ago", "4 months ago". */
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function longAge(hours) {
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if (hours == null) return '';
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const units = [
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[8760, 'year'], [720, 'month'], [168, 'week'], [24, 'day'], [1, 'hour']
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];
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for (const [size, name] of units) {
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if (hours >= size) {
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const n = Math.floor(hours / size);
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return `${n} ${name}${n === 1 ? '' : 's'} ago`;
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}
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}
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const minutes = Math.max(1, Math.round(hours * 60));
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return `${minutes} minute${minutes === 1 ? '' : 's'} ago`;
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}
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/** Compact age for the PoC columns: 3h, 3d, 2w, 5mo, 2y. */
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function shortAge(hours) {
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if (hours == null) return '';
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if (hours < 24) return Math.max(1, Math.round(hours)) + 'h';
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const days = hours / 24;
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if (days < 14) return Math.round(days) + 'd';
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if (days < 60) return Math.round(days / 7) + 'w';
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if (days < 730) return Math.round(days / 30) + 'mo';
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return Math.round(days / 365) + 'y';
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}
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function repoFromUrl(url) {
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const match = /^https?:\/\/(?:www\.)?github\.com\/([^/#?]+)\/([^/#?]+)/i.exec(url || '');
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if (!match) return null;
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return { owner: match[1], repo: match[2].replace(/\.git$/i, '') };
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}
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/** Everything after the host, for links that are not GitHub repositories. */
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function plainLinkLabel(url) {
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try {
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const parsed = new URL(url);
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return parsed.host.replace(/^www\./, '') + parsed.pathname.replace(/\/$/, '');
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} catch (err) {
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return url;
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}
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}
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/* ---- matching ---------------------------------------------------------- */
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function normalizeToSpaces(value) {
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return value.toLowerCase().replace(/[^a-z0-9]+/g, ' ').trim();
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}
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function buildLooseRegex(value) {
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const compact = value.toLowerCase().replace(/[^a-z0-9]+/g, '');
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if (compact.length < 4) return null;
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const escaped = compact.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
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return new RegExp(escaped.split('').join('[^a-z0-9]*'));
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}
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function buildMatcher(term) {
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const raw = term.toLowerCase().trim();
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if (!raw) return null;
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const isPhrase = /\s/.test(raw);
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const normalized = raw.replace(/[^a-z0-9]+/g, '');
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return {
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raw,
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isPhrase,
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phrase: isPhrase ? normalizeToSpaces(raw) : '',
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loose: !isPhrase && normalized.length >= 4 ? buildLooseRegex(raw) : null
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};
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}
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// Plain substring matching made "rce" hit "open source" and "sudo" hit
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// "pseudo". Require the term to start a word; matching into the end of one is
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// still allowed so that "word" finds "wordpress".
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function wordStart(text, term) {
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let at = text.indexOf(term);
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while (at > 0) {
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const code = text.charCodeAt(at - 1);
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if (!((code > 96 && code < 123) || (code > 47 && code < 58))) return at;
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at = text.indexOf(term, at + 1);
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}
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return at;
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}
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// A term in the opening of an advisory is what it is about; one buried deep in
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// the prose is usually incidental. Coarse buckets so that a few characters of
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// difference never outweighs the newest-first tie-break.
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function leadBonus(index) {
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if (index < 0) return 0;
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if (index < 80) return 80;
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if (index < 300) return 40;
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return 0;
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}
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function pocText(entry) {
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if (entry._pocText === undefined) {
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entry._pocText = (entry.poc || []).join(' ').toLowerCase();
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}
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return entry._pocText;
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}
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function pocSpace(entry) {
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if (entry._pocSpace === undefined) {
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entry._pocSpace = normalizeToSpaces(pocText(entry));
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}
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return entry._pocSpace;
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}
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function descSpace(entry) {
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if (entry._descSpace === undefined) {
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entry._descSpace = normalizeToSpaces(entry._descText);
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}
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return entry._descSpace;
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}
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function scoreEntry(entry, matcher) {
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if (!matcher || !matcher.raw) return 0;
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if (matcher.isPhrase) {
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const phrase = matcher.phrase;
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if (!phrase) return 0;
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const at = wordStart(descSpace(entry), phrase);
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if (at >= 0) return 200 + leadBonus(at);
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if (wordStart(pocSpace(entry), phrase) >= 0) return 80;
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return 0;
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}
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const raw = matcher.raw;
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if (entry._cveText.includes(raw)) return 600;
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const at = wordStart(entry._descText, raw);
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if (at >= 0) return 240 + leadBonus(at);
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if (wordStart(pocText(entry), raw) >= 0) return 80;
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if (matcher.loose) {
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if (matcher.loose.test(entry._descText)) return 160;
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if (matcher.loose.test(pocText(entry))) return 60;
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}
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return 0;
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}
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/** How many of an entry's links carry every search term. */
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function countLinkHits(entry, matchers) {
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let hits = 0;
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for (const url of entry.poc || []) {
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const text = url.toLowerCase();
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if (matchers.every(m => wordStart(text, m.raw) >= 0 || (m.loose && m.loose.test(text)))) {
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hits += 1;
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if (hits >= 999) break;
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}
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}
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return hits;
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}
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function runSearch(query) {
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const terms = query.match(/-?"[^"]+"|-?\S+/g) || [];
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const cleaned = terms.map(t => t.replace(/^(-?)"/, '$1').replace(/"$/, ''));
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const positive = cleaned.filter(t => t && t[0] !== '-');
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const matchers = positive.map(buildMatcher).filter(Boolean);
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// Unquoted words are matched independently, so "active directory" also hits a
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// description holding "active session" and "working directory". Reward the
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// words appearing together to keep those below real matches.
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const adjacent = positive.length > 1 ? positive.join(' ').toLowerCase() : '';
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const negatives = cleaned
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.filter(t => t && t[0] === '-')
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.map(t => t.slice(1))
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.filter(Boolean)
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.map(buildMatcher)
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.filter(Boolean);
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const results = [];
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results.pocTotal = 0;
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for (const entry of dataset) {
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let score = 0;
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let matched = true;
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let describes = false;
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for (const matcher of matchers) {
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const termScore = scoreEntry(entry, matcher);
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if (termScore === 0) { matched = false; break; }
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if (termScore >= 160) describes = true;
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score += termScore;
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}
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if (!matched) continue;
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if (negatives.some(m => scoreEntry(entry, m) > 0)) continue;
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if (adjacent) {
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const at = wordStart(entry._descText, adjacent);
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if (at >= 0) { score += 300 + leadBonus(at); describes = true; }
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else if (wordStart(pocText(entry), adjacent) >= 0) score += 100;
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}
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entry._score = score;
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// A term nobody's advisory text uses — "log4shell" — leaves every match tied
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// at the weakest tier, where newest-first is meaningless. How many of the
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// linked PoCs carry the term says far more than which CVE is newer.
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entry._hits = describes ? 0 : countLinkHits(entry, matchers);
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results.pocTotal += (entry.poc || []).length;
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results.push(entry);
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}
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results.sort((a, b) => {
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if (b._score !== a._score) return b._score - a._score;
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if (b._hits !== a._hits) return b._hits - a._hits;
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if (b._year !== a._year) return b._year - a._year;
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return b._num - a._num;
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});
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return results;
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}
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function prepareDataset(raw) {
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if (!Array.isArray(raw)) return [];
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const out = [];
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for (const entry of raw) {
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const cve = (entry.cve || '').trim();
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if (!cve || !Array.isArray(entry.poc) || entry.poc.length === 0) continue;
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const parts = cve.split('-');
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entry._cveText = cve.toLowerCase();
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entry._descText = REPLACE_STRINGS
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.reduce((desc, str) => desc.replace(str, ''), entry.desc || '')
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.toLowerCase();
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entry._year = parseInt(parts[1], 10) || 0;
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entry._num = parseInt(parts[2], 10) || 0;
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out.push(entry);
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}
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return out;
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}
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/* ---- rendering --------------------------------------------------------- */
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const el = {
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input: document.querySelector('[data-search]'),
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status: document.querySelector('[data-status]'),
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results: document.querySelector('[data-results]'),
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trending: document.querySelector('[data-trending]'),
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trendTitle: document.querySelector('[data-trend-title]'),
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trendNote: document.querySelector('[data-trend-note]'),
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trendRows: document.querySelector('[data-trend-rows]'),
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refreshed: document.querySelector('[data-refreshed]')
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};
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function pocRow(url) {
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const parsed = repoFromUrl(url);
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const href = escapeHTML(url);
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if (!parsed) {
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return `<div class="poc-row"><span class="poc-name">` +
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`<a href="${href}" target="_blank" rel="noopener">${escapeHTML(plainLinkLabel(url))}</a>` +
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`</span><span class="poc-stars"></span><span class="poc-age"></span></div>`;
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}
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const key = (parsed.owner + '/' + parsed.repo).toLowerCase();
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const meta = repoMeta[key];
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const stars = meta ? meta[0] : null;
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const hours = meta ? hoursSince(meta[1]) : null;
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const starClass = stars != null && stars >= 500 ? 'poc-stars is-popular' : 'poc-stars';
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return `<div class="poc-row">` +
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`<span class="poc-name"><span class="poc-owner">${escapeHTML(parsed.owner)}</span>` +
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`<span class="poc-sep"> / </span>` +
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`<a href="${href}" target="_blank" rel="noopener">${escapeHTML(parsed.repo)}</a></span>` +
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`<span class="${starClass}">${stars == null ? '' : formatStars(stars) + ' ★'}</span>` +
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`<span class="poc-age">${escapeHTML(shortAge(hours))}</span></div>`;
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}
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function compact(value) {
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return value.toLowerCase().replace(/[^a-z0-9]/g, '');
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}
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/** Best links first. A repository named after the CVE is a proof of concept for
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* it; a 5k-star scanner that merely mentions it is not, so stars only order
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* repositories that are already about this CVE. Links with no star count keep
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* their original order behind both — a reference has no repository to rank. */
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function rankedLinks(entry) {
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if (entry._ranked) return entry._ranked;
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const id = compact(entry.cve);
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const scored = (entry.poc || []).map((url, index) => {
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const parsed = repoFromUrl(url);
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const meta = parsed && repoMeta[(parsed.owner + '/' + parsed.repo).toLowerCase()];
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return {
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url,
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index,
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dedicated: compact(url).includes(id) ? 1 : 0,
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stars: meta ? meta[0] : -1
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};
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});
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scored.sort((a, b) =>
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(b.dedicated - a.dedicated) || (b.stars - a.stars) || (a.index - b.index));
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entry._ranked = scored.map(item => item.url);
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return entry._ranked;
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}
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function resultRow(entry) {
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const id = entry.cve;
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const open = state.descOpen.has(id);
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const all = state.pocOpen.has(id);
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const links = rankedLinks(entry);
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const visible = all ? links : links.slice(0, POC_PREVIEW);
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const more = all
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? '↑ show fewer'
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: (links.length > POC_PREVIEW
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? `+ ${formatCount(links.length - POC_PREVIEW)} more repositories`
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: 'all repositories shown');
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const moreButton = links.length > 1
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? `<button type="button" class="poc-more" data-toggle-poc="${escapeHTML(id)}">${more}</button>`
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: '';
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const dates = [];
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if (entry.published) dates.push(['published', entry.published]);
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if (entry.modified) dates.push(['modified', entry.modified]);
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const dateHtml = dates.length
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? `<dl class="result-dates">${dates.map(([label, value]) =>
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`<div class="result-date"><dt>${label}</dt><dd>${escapeHTML(value)}</dd></div>`).join('')}</dl>`
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: '';
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return `<div class="result-row">
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<div class="result-meta">
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<a class="result-id" href="https://nvd.nist.gov/vuln/detail/${encodeURIComponent(id)}" target="_blank" rel="noopener">${escapeHTML(id)}</a>
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<div class="result-pocs">${formatCount(links.length)} linked PoC${links.length === 1 ? '' : 's'}</div>
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${dateHtml}
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<a class="mitre" href="https://www.cve.org/CVERecord?id=${encodeURIComponent(id)}" target="_blank" rel="noopener">MITRE ↗</a>
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</div>
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<div class="result-body">
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<p class="result-desc${open ? ' is-open' : ''}">${escapeHTML(entry.desc || '')}</p>
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<button type="button" class="expander" data-toggle-desc="${escapeHTML(id)}">${open ? '↑ collapse' : '↓ full description'}</button>
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<div class="poc-list">
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${visible.map(pocRow).join('')}
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${moreButton}
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</div>
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</div>
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</div>`;
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}
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/** Hide the expander on descriptions that already fit; a button that does
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* nothing when clicked is worse than no button. */
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function pruneExpanders() {
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for (const row of el.results.querySelectorAll('.result-row')) {
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const desc = row.querySelector('.result-desc');
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const button = row.querySelector('.expander');
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if (!desc || !button) continue;
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if (!desc.classList.contains('is-open') && desc.scrollHeight <= desc.clientHeight + 1) {
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button.hidden = true;
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}
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}
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}
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function renderResults(elapsed) {
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const results = state.results;
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el.trending.hidden = true;
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el.results.hidden = false;
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if (!results.length) {
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el.results.innerHTML = `<div class="empty">
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<div class="empty-head">No CVE matched <b>${escapeHTML(state.query)}</b></div>
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<div class="empty-hint">Try a CVE ID, a vendor, or a product name. Prefix a term with <code>-</code> to exclude it.</div>
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</div>`;
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return;
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}
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const shown = results.slice(0, state.shown);
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const pocTotal = results.pocTotal;
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const remaining = results.length - shown.length;
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const footer = remaining > 0
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? `<button type="button" class="poc-more" data-more-results>+ ${formatCount(remaining)} more matching CVEs</button>`
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: '';
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el.results.innerHTML = `<div class="card-head">
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<h2>Results</h2>
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<span class="card-count">${formatCount(results.length)} CVE${results.length === 1 ? '' : 's'} · ${formatCount(pocTotal)} PoCs</span>
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</div>
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<div class="col-head"><span>CVE</span><span>DESCRIPTION / POC LINKS</span></div>
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${shown.map(resultRow).join('')}${footer}`;
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pruneExpanders();
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if (elapsed != null) {
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el.status.textContent = `matched in ${Math.max(1, Math.round(elapsed))}ms`;
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}
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}
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function trendRow(item) {
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const popular = item.stars >= 500 ? ' is-popular' : '';
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return `<div class="trend-row">
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<span class="trend-stars${popular}">${formatStars(item.stars)} ★</span>
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<span class="trend-age">${escapeHTML(longAge(item._pushed))}</span>
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<a class="trend-name" href="${escapeHTML(item.url)}" target="_blank" rel="noopener">${escapeHTML(item.name)}</a>
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<span class="trend-desc">${escapeHTML(item.desc || '')}</span>
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</div>`;
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}
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function renderTrending() {
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el.results.hidden = true;
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el.trending.hidden = false;
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const ranked = trending.slice();
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if (state.mode === 'TRENDING') {
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// Stars weighted against the age the row displays, so the order is legible
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// from the table itself: a fresh PoC pulling stars outranks a bigger one
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// that has been sitting still.
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const rank = r => r.stars / Math.pow((r._pushed == null ? 8760 : r._pushed) + 6, 0.45);
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ranked.sort((a, b) => rank(b) - rank(a));
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} else {
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ranked.sort((a, b) => (a._pushed == null ? Infinity : a._pushed) - (b._pushed == null ? Infinity : b._pushed));
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}
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const rows = ranked.slice(0, TREND_ROWS);
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el.trendTitle.textContent = state.mode === 'TRENDING'
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|
? 'Trending Proof-of-Concepts'
|
|
: 'Recently updated Proof-of-Concepts';
|
|
|
|
el.trendNote.textContent = state.mode === 'TRENDING'
|
|
? 'stars weighted against time since the last commit'
|
|
: `newest commit first · ${formatCount(trending.length)} repositories`;
|
|
|
|
el.trendRows.innerHTML = rows.length
|
|
? rows.map(trendRow).join('')
|
|
: '<div class="trend-row"><span class="trend-desc">No recent PoCs.</span></div>';
|
|
|
|
document.querySelectorAll('.toggle button').forEach(button => {
|
|
button.setAttribute('aria-pressed', String(button.dataset.mode === state.mode));
|
|
});
|
|
}
|
|
|
|
function idleStatus() {
|
|
if (!indexMeta) return '';
|
|
return `${formatCount(indexMeta.total_cves)} CVEs · ${formatCount(indexMeta.with_pocs)} with PoCs`;
|
|
}
|
|
|
|
function render() {
|
|
if (state.query.length < MIN_QUERY) {
|
|
el.status.textContent = state.ready ? idleStatus() : 'loading index…';
|
|
renderTrending();
|
|
return;
|
|
}
|
|
if (!state.ready) {
|
|
el.results.hidden = false;
|
|
el.trending.hidden = true;
|
|
el.status.textContent = 'loading index…';
|
|
el.results.innerHTML = `<div class="empty">
|
|
<div class="empty-head">Loading the CVE index…</div>
|
|
<div class="empty-hint">The full index is a single download; results appear as soon as it lands.</div>
|
|
</div>`;
|
|
return;
|
|
}
|
|
const started = performance.now();
|
|
state.results = runSearch(state.query);
|
|
renderResults(performance.now() - started);
|
|
}
|
|
|
|
/* ---- wiring ------------------------------------------------------------ */
|
|
|
|
// A full pass over the index costs ~200ms, so one per keystroke makes typing
|
|
// stutter. 160ms covers an ordinary typing cadence without the wait being felt;
|
|
// clearing the field stays instant.
|
|
let searchTimer = null;
|
|
el.input.addEventListener('input', () => {
|
|
const next = el.input.value.trim();
|
|
if (next === state.query) return;
|
|
state.query = next;
|
|
state.shown = PAGE_SIZE;
|
|
clearTimeout(searchTimer);
|
|
if (next.length < MIN_QUERY) {
|
|
render();
|
|
return;
|
|
}
|
|
searchTimer = setTimeout(render, 160);
|
|
});
|
|
|
|
document.querySelector('.search').addEventListener('submit', event => event.preventDefault());
|
|
|
|
document.querySelector('.toggle').addEventListener('click', event => {
|
|
const button = event.target.closest('button[data-mode]');
|
|
if (!button) return;
|
|
state.mode = button.dataset.mode;
|
|
renderTrending();
|
|
});
|
|
|
|
el.results.addEventListener('click', event => {
|
|
const desc = event.target.closest('[data-toggle-desc]');
|
|
const poc = event.target.closest('[data-toggle-poc]');
|
|
const more = event.target.closest('[data-more-results]');
|
|
if (desc) {
|
|
const id = desc.dataset.toggleDesc;
|
|
state.descOpen.has(id) ? state.descOpen.delete(id) : state.descOpen.add(id);
|
|
} else if (poc) {
|
|
const id = poc.dataset.togglePoc;
|
|
state.pocOpen.has(id) ? state.pocOpen.delete(id) : state.pocOpen.add(id);
|
|
} else if (more) {
|
|
state.shown += PAGE_SIZE;
|
|
} else {
|
|
return;
|
|
}
|
|
renderResults(null);
|
|
});
|
|
|
|
async function loadJSON(url, options) {
|
|
const response = await fetch(url, options);
|
|
if (!response.ok) throw new Error(`${url} (${response.status})`);
|
|
return response.json();
|
|
}
|
|
|
|
(async () => {
|
|
try {
|
|
const meta = await loadJSON('/trending_poc.json', { cache: 'no-store' });
|
|
indexMeta = meta;
|
|
trending = (meta.items || []).map(item => Object.assign({}, item, {
|
|
_pushed: hoursSince(item.pushed),
|
|
_created: hoursSince(item.created)
|
|
}));
|
|
const minutes = Math.max(0, Math.round((Date.now() - Date.parse(meta.generated)) / 60000));
|
|
el.refreshed.textContent = minutes < 60
|
|
? `index refreshed ${minutes} minute${minutes === 1 ? '' : 's'} ago`
|
|
: `index refreshed ${Math.round(minutes / 60)} hour${Math.round(minutes / 60) === 1 ? '' : 's'} ago`;
|
|
} catch (err) {
|
|
console.warn(err.message);
|
|
}
|
|
render();
|
|
|
|
// The repository metadata is optional: without it the PoC rows simply lose
|
|
// their star and age columns, which is the documented fallback.
|
|
loadJSON('/repo_meta.json').then(data => {
|
|
repoMeta = data || {};
|
|
for (const entry of dataset) entry._ranked = null;
|
|
if (state.query && state.ready) renderResults(null);
|
|
}).catch(err => console.warn(err.message));
|
|
|
|
try {
|
|
dataset = prepareDataset(await loadJSON('/CVE_list.json'));
|
|
state.ready = true;
|
|
render();
|
|
} catch (err) {
|
|
console.warn(err.message);
|
|
el.status.textContent = 'index unavailable';
|
|
}
|
|
})();
|