422 lines
13 KiB
Plaintext
422 lines
13 KiB
Plaintext
/* BARE_OS_BIN_API 1.0.0 — bump when staged /bin script semantics change (see developer guide). */
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/** Shared helpers for drive-resident /bin scripts (prepended before each command). */
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function bareStdin(ctx) {
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return typeof ctx.shellStdin === 'string' ? ctx.shellStdin : ''
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}
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/** @param {number} mode @param {'file' | 'directory' | 'symlink'} type */
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function bareFormatModeString(mode, type) {
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const typeChar = type === 'directory' ? 'd' : type === 'symlink' ? 'l' : '-'
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const perm = mode & 0o777
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const r = (bit) => (perm & bit ? 'r' : '-')
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const w = (bit) => (perm & bit ? 'w' : '-')
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const x = (bit) => (perm & bit ? 'x' : '-')
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return (
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typeChar +
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r(0o400) +
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w(0o200) +
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x(0o100) +
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r(0o040) +
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w(0o020) +
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x(0o010) +
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r(0o004) +
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w(0o002) +
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x(0o001)
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)
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}
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/** @param {number} mtimeMs @param {number} [nowMs] */
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function bareFormatLsMtime(mtimeMs, nowMs) {
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const now = nowMs != null ? nowMs : Date.now()
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const d = new Date(mtimeMs)
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const months = [
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'Jan',
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'Feb',
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'Mar',
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'Apr',
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'May',
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'Jun',
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'Jul',
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'Aug',
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'Sep',
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'Oct',
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'Nov',
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'Dec'
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]
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const mon = months[d.getMonth()]
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const day = String(d.getDate()).padStart(2, ' ')
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const sixMo = 180 * 24 * 3600 * 1000
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if (Math.abs(now - mtimeMs) > sixMo) {
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const yr = String(d.getFullYear()).padStart(4, ' ')
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return mon + ' ' + day + ' ' + yr
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}
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const hh = String(d.getHours()).padStart(2, '0')
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const mm = String(d.getMinutes()).padStart(2, '0')
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return mon + ' ' + day + ' ' + hh + ':' + mm
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}
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/** @param {number} size */
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function barePosixBlocks(size) {
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return Math.ceil(Number(size) / 512) || 0
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}
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/**
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* Raw stdout for NUL/binary when **`process.stdout.write`** is missing.
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* If **`ctx.bareOsBinWrite(Uint8Array|string)`** is set (tests / host), use it.
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* @param {Record<string, unknown>} ctx
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* @param {string | Uint8Array} chunk
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* @returns {boolean}
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*/
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function bareOsEmitRaw(ctx, chunk) {
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if (typeof ctx.bareOsBinWrite === 'function') {
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const b4 = ctx.b4a
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const u8 =
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typeof chunk === 'string'
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? b4 && typeof b4.from === 'function'
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? b4.from(chunk)
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: new TextEncoder().encode(chunk)
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: chunk
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ctx.bareOsBinWrite(u8 instanceof Uint8Array ? u8 : new Uint8Array(u8))
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return true
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}
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const w = globalThis.process?.stdout?.write
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if (typeof w === 'function') {
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w.call(globalThis.process.stdout, chunk)
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return true
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}
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return false
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}
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function usage(ctx) {
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ctx.console.log(
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'usage: whois [--json] TARGET\n' +
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'Lookup domain, IP, or ASN information using RDAP.\n' +
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'\n' +
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' --json print raw RDAP JSON\n' +
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' -h, --help show this help'
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)
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}
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function parseArgv(ctx, argv) {
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let json = false
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const positional = []
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for (let i = 1; i < argv.length; i++) {
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const a = argv[i]
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if (a === '-h' || a === '--help') return { help: true }
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if (a === '--json') {
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json = true
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continue
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}
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if (a.startsWith('-')) {
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ctx.console.error('whois: unknown option ' + a)
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ctx.exitCode = 1
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return null
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}
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positional.push(a)
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}
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if (positional.length !== 1) {
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ctx.console.error('whois: expected exactly one target')
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ctx.exitCode = 1
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return null
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}
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return { help: false, json, target: positional[0].trim() }
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}
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function classifyTarget(raw) {
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const target = String(raw || '').trim()
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if (!target) return null
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if (/^AS\d+$/i.test(target)) {
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return { kind: 'asn', query: String(Number(target.slice(2))) }
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}
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if (/^\d+$/.test(target)) return { kind: 'asn', query: String(Number(target)) }
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if (isIpv4(target) || isIpv6(target)) return { kind: 'ip', query: target }
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if (isLikelyDomain(target)) return { kind: 'domain', query: target.toLowerCase() }
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return null
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}
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function isIpv4(s) {
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const parts = String(s).split('.')
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if (parts.length !== 4) return false
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for (const p of parts) {
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if (!/^\d+$/.test(p)) return false
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const n = Number(p)
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if (n < 0 || n > 255) return false
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}
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return true
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}
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function isIpv6(s) {
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const x = String(s)
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return x.includes(':') && /^[0-9a-fA-F:]+$/.test(x)
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}
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function isLikelyDomain(s) {
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const x = String(s).toLowerCase()
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if (x.length < 3 || x.length > 253) return false
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if (!x.includes('.')) return false
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if (/[^a-z0-9.-]/.test(x)) return false
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if (x.startsWith('.') || x.endsWith('.')) return false
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const labels = x.split('.')
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for (const label of labels) {
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if (!label || label.length > 63) return false
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if (label.startsWith('-') || label.endsWith('-')) return false
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}
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return true
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}
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async function fetchJson(fetchFn, url) {
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const res = await fetchFn(url, { method: 'GET' })
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if (!res || !res.ok) {
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const status = res ? `${res.status} ${res.statusText || ''}`.trim() : 'unknown'
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throw new Error('HTTP error from ' + url + ': ' + status)
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}
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return await res.json()
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}
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function pickBaseUrlFromBootstrap(kind, query, bootstrap) {
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const services = Array.isArray(bootstrap && bootstrap.services)
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? bootstrap.services
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: []
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if (kind === 'domain') return pickDomainBaseUrl(query, services)
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if (kind === 'asn') return pickAsnBaseUrl(query, services)
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if (kind === 'ip') return pickIpBaseUrl(query, services)
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return null
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}
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function pickDomainBaseUrl(domain, services) {
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const labels = String(domain).toLowerCase().split('.')
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let best = null
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for (const entry of services) {
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const keys = Array.isArray(entry && entry[0]) ? entry[0] : []
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const urls = Array.isArray(entry && entry[1]) ? entry[1] : []
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const url = typeof urls[0] === 'string' ? urls[0] : null
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if (!url) continue
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for (const key of keys) {
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const tld = String(key || '').toLowerCase()
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if (!tld) continue
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if (labels[labels.length - 1] === tld && (!best || tld.length > best.key.length)) {
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best = { key: tld, url }
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}
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}
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}
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return best ? best.url : null
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}
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function pickAsnBaseUrl(asnString, services) {
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const asn = Number(asnString)
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if (!Number.isFinite(asn) || asn < 0) return null
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for (const entry of services) {
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const ranges = Array.isArray(entry && entry[0]) ? entry[0] : []
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const urls = Array.isArray(entry && entry[1]) ? entry[1] : []
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const url = typeof urls[0] === 'string' ? urls[0] : null
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if (!url) continue
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for (const r of ranges) {
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const m = String(r).match(/^(\d+)-(\d+)$/)
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if (!m) continue
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const lo = Number(m[1])
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const hi = Number(m[2])
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if (asn >= lo && asn <= hi) return url
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}
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}
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return null
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}
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function pickIpBaseUrl(ip, services) {
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const version = isIpv4(ip) ? 4 : 6
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const ipBig = ipToBigInt(ip, version)
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if (ipBig == null) return null
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let best = null
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for (const entry of services) {
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const cidrs = Array.isArray(entry && entry[0]) ? entry[0] : []
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const urls = Array.isArray(entry && entry[1]) ? entry[1] : []
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const url = typeof urls[0] === 'string' ? urls[0] : null
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if (!url) continue
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for (const cidr of cidrs) {
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const parsed = parseCidr(String(cidr || ''))
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if (!parsed || parsed.version !== version) continue
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if (ipInCidr(ipBig, parsed)) {
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if (!best || parsed.prefix > best.prefix) best = { prefix: parsed.prefix, url }
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}
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}
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}
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return best ? best.url : null
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}
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function parseCidr(s) {
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const m = s.match(/^([^/]+)\/(\d+)$/)
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if (!m) return null
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const addr = m[1]
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const prefix = Number(m[2])
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const version = isIpv4(addr) ? 4 : isIpv6(addr) ? 6 : 0
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if (!version) return null
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const bits = version === 4 ? 32 : 128
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if (prefix < 0 || prefix > bits) return null
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const base = ipToBigInt(addr, version)
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if (base == null) return null
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return { version, base, prefix, bits }
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}
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function ipInCidr(ipBig, cidr) {
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const shift = BigInt(cidr.bits - cidr.prefix)
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return (ipBig >> shift) === (cidr.base >> shift)
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}
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function ipToBigInt(ip, version) {
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if (version === 4) {
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const parts = ip.split('.').map((x) => Number(x))
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if (parts.length !== 4 || parts.some((n) => !Number.isFinite(n))) return null
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return (
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(BigInt(parts[0]) << 24n) |
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(BigInt(parts[1]) << 16n) |
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(BigInt(parts[2]) << 8n) |
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BigInt(parts[3])
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)
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}
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const segments = expandIpv6(ip)
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if (!segments) return null
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let n = 0n
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for (const seg of segments) n = (n << 16n) | BigInt(seg)
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return n
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}
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function expandIpv6(ip) {
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const raw = String(ip)
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if (!raw.includes(':')) return null
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const halves = raw.split('::')
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if (halves.length > 2) return null
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const left = halves[0] ? halves[0].split(':') : []
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const right = halves.length === 2 && halves[1] ? halves[1].split(':') : []
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if (!allHex(left) || !allHex(right)) return null
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const missing = 8 - (left.length + right.length)
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if (missing < 0 || (halves.length === 1 && missing !== 0)) return null
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const full = [...left, ...Array(missing).fill('0'), ...right]
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if (full.length !== 8) return null
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return full.map((x) => Number.parseInt(x, 16))
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}
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function allHex(parts) {
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for (const p of parts) {
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if (!p) return false
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if (!/^[0-9a-fA-F]{1,4}$/.test(p)) return false
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}
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return true
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}
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function joinUrl(base, suffix) {
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return String(base).replace(/\/+$/, '') + '/' + String(suffix).replace(/^\/+/, '')
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}
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function firstVCardValue(card, key) {
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const arr = Array.isArray(card) ? card : []
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for (const row of arr) {
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if (!Array.isArray(row) || row.length < 4) continue
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if (String(row[0]).toLowerCase() === String(key).toLowerCase()) {
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return row[3] == null ? '' : String(row[3])
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}
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}
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return ''
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}
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function collectRegistrar(entityList) {
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const entities = Array.isArray(entityList) ? entityList : []
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for (const e of entities) {
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const roles = Array.isArray(e && e.roles) ? e.roles : []
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if (!roles.includes('registrar')) continue
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const card = Array.isArray(e && e.vcardArray) ? e.vcardArray[1] : []
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const fn = firstVCardValue(card, 'fn')
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const org = firstVCardValue(card, 'org')
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if (fn || org) return fn || org
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if (typeof e.handle === 'string' && e.handle) return e.handle
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}
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return ''
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}
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function printSummary(ctx, kind, query, rdap) {
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const lines = []
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lines.push('Query: ' + query)
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lines.push('Type: ' + kind)
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if (rdap && rdap.objectClassName) lines.push('Object: ' + rdap.objectClassName)
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if (rdap && rdap.handle) lines.push('Handle: ' + rdap.handle)
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if (rdap && rdap.ldhName) lines.push('Name: ' + rdap.ldhName)
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else if (rdap && rdap.name) lines.push('Name: ' + rdap.name)
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if (rdap && rdap.country) lines.push('Country: ' + rdap.country)
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if (rdap && rdap.ipVersion) lines.push('IP Version: ' + rdap.ipVersion)
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if (rdap && rdap.startAddress && rdap.endAddress) {
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lines.push('Range: ' + rdap.startAddress + ' - ' + rdap.endAddress)
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}
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if (rdap && rdap.startAutnum != null && rdap.endAutnum != null) {
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lines.push('ASN Range: ' + rdap.startAutnum + ' - ' + rdap.endAutnum)
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}
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const registrar = collectRegistrar(rdap && rdap.entities)
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if (registrar) lines.push('Registrar: ' + registrar)
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const statuses = Array.isArray(rdap && rdap.status) ? rdap.status : []
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if (statuses.length) lines.push('Status: ' + statuses.join(', '))
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const nss = Array.isArray(rdap && rdap.nameservers) ? rdap.nameservers : []
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if (nss.length) {
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const nsNames = nss
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.map((x) => (x && (x.ldhName || x.unicodeName) ? x.ldhName || x.unicodeName : ''))
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.filter(Boolean)
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if (nsNames.length) lines.push('Nameservers: ' + nsNames.join(', '))
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}
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const events = Array.isArray(rdap && rdap.events) ? rdap.events : []
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for (const e of events) {
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const action = String((e && e.eventAction) || '')
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const date = String((e && e.eventDate) || '')
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if (action === 'registration' && date) lines.push('Registered: ' + date)
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if (action === 'expiration' && date) lines.push('Expires: ' + date)
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if (action === 'last changed' && date) lines.push('Updated: ' + date)
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}
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for (const line of lines) ctx.console.log(line)
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}
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async function run(ctx, argv) {
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const parsed = parseArgv(ctx, argv)
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if (!parsed) return
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if (parsed.help) return usage(ctx)
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const target = classifyTarget(parsed.target)
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if (!target) {
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ctx.console.error('whois: unsupported target: ' + parsed.target)
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ctx.exitCode = 1
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return
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}
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if (typeof fetch !== 'function') {
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ctx.console.error('whois: fetch is unavailable in this runtime')
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ctx.exitCode = 1
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return
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}
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let bootstrapUrl = ''
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let rdapPath = ''
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if (target.kind === 'domain') {
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bootstrapUrl = 'https://data.iana.org/rdap/dns.json'
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rdapPath = 'domain/' + encodeURIComponent(target.query)
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} else if (target.kind === 'ip') {
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bootstrapUrl = 'https://data.iana.org/rdap/ipv4.json'
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rdapPath = 'ip/' + encodeURIComponent(target.query)
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} else {
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bootstrapUrl = 'https://data.iana.org/rdap/asn.json'
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rdapPath = 'autnum/' + encodeURIComponent(target.query)
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}
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try {
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const bootstrap = await fetchJson(fetch, bootstrapUrl)
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let base = pickBaseUrlFromBootstrap(target.kind, target.query, bootstrap)
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if (!base && target.kind === 'ip' && isIpv6(target.query)) {
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const ipv6Bootstrap = await fetchJson(fetch, 'https://data.iana.org/rdap/ipv6.json')
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base = pickBaseUrlFromBootstrap(target.kind, target.query, ipv6Bootstrap)
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}
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if (!base) {
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ctx.console.error('whois: no RDAP service found for target: ' + target.query)
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ctx.exitCode = 1
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return
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}
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const rdap = await fetchJson(fetch, joinUrl(base, rdapPath))
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if (parsed.json) ctx.console.log(JSON.stringify(rdap, null, 2))
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else printSummary(ctx, target.kind, target.query, rdap)
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} catch (err) {
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ctx.console.error('whois: ' + (err && err.message ? err.message : String(err)))
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ctx.exitCode = 1
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}
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}
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