718 lines
20 KiB
Bash
718 lines
20 KiB
Bash
/* 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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/** Session env map (`vfs.env`, then `ctx.env`). Never throws. */
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function bareOsEnv(ctx) {
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const v = ctx && ctx.vfs && ctx.vfs.env
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if (v && typeof v === 'object') return v
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const e = ctx && ctx.env
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if (e && typeof e === 'object') return e
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return {}
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}
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/**
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* Strict POSIX-ish decimal integer (no octal, no exponent, no empty).
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* @param {unknown} s
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* @returns {number}
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*/
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function bareOsParseDecInt(s) {
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const t = String(s == null ? '' : s).trim()
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if (!/^[+-]?(?:0|[1-9][0-9]*)$/.test(t)) return NaN
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const n = Number.parseInt(t, 10)
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return Number.isSafeInteger(n) ? n : NaN
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}
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/** @param {unknown} s */
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function bareOsParseNonNegInt(s) {
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const n = bareOsParseDecInt(s)
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return n >= 0 ? n : NaN
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}
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/**
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* @param {Record<string, unknown>} ctx
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* @param {string} name
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* @param {number} fallback
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* @param {number} [min]
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* @param {number} [max]
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*/
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function bareOsEnvInt(ctx, name, fallback, min, max) {
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const raw = bareOsEnv(ctx)[name]
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if (raw == null || raw === '') return fallback
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const n = Number.parseInt(String(raw), 10)
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if (!Number.isFinite(n)) return fallback
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let v = n
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if (min != null && v < min) v = min
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if (max != null && v > max) v = max
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return v
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}
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/**
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* @param {Record<string, unknown>} ctx
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* @param {string} msg
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* @param {number} [code]
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*/
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function bareOsFail(ctx, msg, code) {
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if (msg) ctx.console.error(msg)
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ctx.exitCode = code == null ? 1 : code
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}
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/** @param {unknown} e */
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function bareOsIsNotFoundErr(e) {
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const code = e && typeof e === 'object' ? e.code : ''
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if (code === 'ENOENT') return true
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const msg = String((e && e.message) || e || '')
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return /ENOENT|No such file|not found/i.test(msg)
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}
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/**
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* @param {Record<string, unknown>} ctx
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* @param {unknown} buf
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* @returns {Uint8Array}
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*/
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function bareOsToU8(ctx, buf) {
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if (!buf) return new Uint8Array(0)
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if (buf instanceof Uint8Array) return buf
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if (ctx && ctx.b4a && typeof ctx.b4a.from === 'function') return ctx.b4a.from(buf)
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return new Uint8Array(buf)
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}
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/** @param {string} dir @param {string} name */
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function bareOsJoinPath(dir, name) {
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const d = String(dir || '').replace(/\/+$/, '')
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const n = String(name || '').replace(/^\/+/, '')
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if (!d || d === '/') return '/' + n
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return d + '/' + n
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}
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/** @param {string} p */
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function bareOsBaseName(p) {
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const t = String(p || '').replace(/\/+$/, '')
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if (!t || t === '/') return t === '/' ? '/' : ''
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const i = t.lastIndexOf('/')
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return i < 0 ? t : t.slice(i + 1) || t
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}
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/** @param {string} p */
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function bareOsParentDir(p) {
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const t = String(p || '').replace(/\/+$/, '') || '/'
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if (t === '/') return '/'
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const i = t.lastIndexOf('/')
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return i <= 0 ? '/' : t.slice(0, i) || '/'
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}
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/** @param {string} p */
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function bareOsNormPath(p) {
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return String(p || '').replace(/\/+$/, '') || '/'
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}
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/**
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* @param {Record<string, unknown>} ctx
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* @param {string} p
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*/
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function bareOsResolvePath(ctx, p) {
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if (ctx && ctx.vfs && typeof ctx.vfs.resolveLogical === 'function') {
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try {
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return String(ctx.vfs.resolveLogical(p) || p)
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} catch {
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/* fall through */
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}
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}
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return String(p || '')
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}
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/**
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* True when dest is src or lives under src (self-copy / self-move).
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* @param {Record<string, unknown>} ctx
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* @param {string} src
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* @param {string} dest
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*/
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function bareOsDestInsideSrc(ctx, src, dest) {
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const s = bareOsNormPath(bareOsResolvePath(ctx, src))
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const d = bareOsNormPath(bareOsResolvePath(ctx, dest))
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if (s === d) return true
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if (s === '/') return d !== '/'
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return d === s || d.startsWith(s + '/')
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}
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const BARE_OS_B64_ALPH =
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'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
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/** @param {Uint8Array} u8 */
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function bareOsB64Encode(u8) {
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let out = ''
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let i = 0
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for (; i + 2 < u8.length; i += 3) {
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const n = (u8[i] << 16) | (u8[i + 1] << 8) | u8[i + 2]
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out +=
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BARE_OS_B64_ALPH[(n >> 18) & 63] +
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BARE_OS_B64_ALPH[(n >> 12) & 63] +
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BARE_OS_B64_ALPH[(n >> 6) & 63] +
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BARE_OS_B64_ALPH[n & 63]
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}
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const rest = u8.length - i
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if (rest === 1) {
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const n = u8[i] << 16
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out += BARE_OS_B64_ALPH[(n >> 18) & 63] + BARE_OS_B64_ALPH[(n >> 12) & 63] + '=='
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} else if (rest === 2) {
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const n = (u8[i] << 16) | (u8[i + 1] << 8)
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out +=
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BARE_OS_B64_ALPH[(n >> 18) & 63] +
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BARE_OS_B64_ALPH[(n >> 12) & 63] +
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BARE_OS_B64_ALPH[(n >> 6) & 63] +
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'='
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}
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return out
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}
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/**
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* RFC 4648 Base64 decode (also accepts URL-safe alphabet). Rejects junk.
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* @param {string} s
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* @returns {Uint8Array}
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*/
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function bareOsB64Decode(s) {
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const t = String(s).replace(/\s+/g, '')
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if (!t) return new Uint8Array(0)
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if (t.length % 4 === 1) throw new Error('invalid base64 length')
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let pad = 0
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if (t.endsWith('==')) pad = 2
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else if (t.endsWith('=')) pad = 1
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const body = pad ? t.slice(0, t.length - pad) : t
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const bytes = []
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let buf = 0
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let bits = 0
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for (let i = 0; i < body.length; i++) {
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const c = body[i]
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let v = BARE_OS_B64_ALPH.indexOf(c)
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if (v < 0) {
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if (c === '-') v = 62
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else if (c === '_') v = 63
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else throw new Error('invalid base64 character')
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}
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buf = (buf << 6) | v
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bits += 6
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if (bits >= 8) {
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bits -= 8
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bytes.push((buf >> bits) & 255)
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}
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}
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if (pad) {
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const want = Math.floor((body.length * 6) / 8)
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if (bytes.length > want) bytes.length = want
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}
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return new Uint8Array(bytes)
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}
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/**
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* @param {string} s
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* @returns {Uint8Array}
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*/
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function bareOsHexDecode(s) {
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const t = String(s).replace(/\s+/g, '')
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if (t.length % 2 !== 0) throw new Error('odd hex length')
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const out = new Uint8Array(t.length / 2)
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for (let i = 0; i < out.length; i++) {
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const pair = t.slice(i * 2, i * 2 + 2)
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if (!/^[0-9a-fA-F]{2}$/.test(pair)) throw new Error('invalid hex')
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out[i] = Number.parseInt(pair, 16)
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}
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return out
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}
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/** @param {Uint8Array} u8 */
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function bareOsHexEncode(u8) {
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let s = ''
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for (let i = 0; i < u8.length; i++) s += u8[i].toString(16).padStart(2, '0')
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return s
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}
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/**
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* Shared GNU-style checksum FILE / stdin loop used by *sum commands.
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* @param {Record<string, unknown>} ctx
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* @param {string[]} argv
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* @param {{
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* cmd: string,
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* help?: string,
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* digest: (u8: Uint8Array) => string | Promise<string>
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* }} opts
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*/
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async function bareChecksumRun(ctx, argv, opts) {
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const cmd = String(opts.cmd || 'checksum')
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const help =
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opts.help ||
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'usage: ' +
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cmd +
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' [FILE]...\nWith no FILE, or when FILE is -, read standard input.'
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const digest = opts.digest
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const paths = []
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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') {
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ctx.console.log(help)
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ctx.exitCode = 0
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return
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}
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if (a.startsWith('-') && a !== '-') {
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ctx.console.error(cmd + ': unsupported option ' + a)
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ctx.exitCode = 1
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return
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}
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paths.push(a)
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}
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const b4 = ctx.b4a
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async function one(name, buf) {
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const u8 = buf instanceof Uint8Array ? buf : new Uint8Array(buf)
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try {
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const hex = await digest(u8)
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ctx.console.log(hex + ' ' + name)
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} catch (e) {
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ctx.console.error(cmd + ': ' + (e.message || e))
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ctx.exitCode = 1
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}
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}
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if (!paths.length || (paths.length === 1 && paths[0] === '-')) {
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await one('-', b4.from(bareStdin(ctx)))
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return
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}
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for (const p of paths) {
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if (p === '-') {
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await one('-', b4.from(bareStdin(ctx)))
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continue
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}
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const b = await ctx.vfs.readFile(p)
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if (!b) {
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ctx.console.error(cmd + ': ' + p + ': No such file')
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ctx.exitCode = 1
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continue
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}
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await one(p, b)
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}
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}
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/**
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* WebCrypto hex digest; throws the same missing-subtle message as the old *sum files.
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* @param {string} algo
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* @param {string} missingMsg
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* @returns {(u8: Uint8Array) => Promise<string>}
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*/
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function bareSubtleHexDigest(algo, missingMsg) {
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return async function (u8) {
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const subtle = globalThis.crypto?.subtle
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if (!subtle || typeof subtle.digest !== 'function') {
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throw new Error(missingMsg)
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}
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const hash = await subtle.digest(algo, u8)
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return bareOsHexEncode(new Uint8Array(hash))
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}
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}
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/**
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* Owner/group name → uid/gid used by chown / chgrp.
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* @param {string} spec
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* @param {Record<string, string>} env
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* @returns {number | null}
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*/
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function parseGroupSpec(spec, env) {
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const s = String(spec).trim()
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if (!s) return null
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if (/^\d+$/.test(s)) {
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const n = Number.parseInt(s, 10)
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return Number.isFinite(n) ? n : null
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}
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const g = (env.GROUP || env.USER || 'guest').trim()
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if (s === 'root') return 0
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if (s === 'guest' || s === 'nobody') return 65534
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if (g && s === g) {
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const gid = Number.parseInt(String(env.GID ?? '65534'), 10)
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return Number.isFinite(gid) ? gid : 65534
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}
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return null
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}
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/**
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* User name / numeric uid used by chown.
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* @param {string} spec
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* @param {Record<string, string>} env
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* @returns {{ uid: number | null, gid: number | null }}
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*/
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function parseIdSpec(spec, env) {
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const s = String(spec).trim()
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if (!s) return { uid: null, gid: null }
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if (/^\d+$/.test(s)) {
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const n = Number.parseInt(s, 10)
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return { uid: Number.isFinite(n) ? n : null, gid: null }
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}
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const u = (env.USER || env.LOGNAME || '').trim()
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if (s === 'root') return { uid: 0, gid: null }
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if (s === 'guest' || s === 'nobody') return { uid: 65534, gid: null }
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if (u && s === u) {
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const uid = Number.parseInt(String(env.UID ?? '65534'), 10)
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return { uid: Number.isFinite(uid) ? uid : 65534, gid: null }
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}
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return { uid: null, gid: null }
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}
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/**
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* Plain-stream masked line input (same pattern as agent --config / bareAgentPromptSetupLine).
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* Used by /bin/login so the Fish REPL is suspended and stdin/stdout are the TTY streams.
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*/
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/**
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* @param {Record<string, unknown> | undefined} ctx
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* @param {import('stream').Writable | undefined} out
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* @param {string} s
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*/
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function bareLoginInteractiveWrite(ctx, out, s) {
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const text =
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ctx && ctx.bareOsPtyStdoutCrlf
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? String(s).replace(/\r?\n/g, '\r\n')
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: String(s)
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if (out && typeof out.write === 'function') {
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try {
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out.write(text)
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} catch {
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/* ignore */
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}
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}
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}
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/**
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* @param {import('stream').Readable} stdin
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* @returns {Promise<string>}
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*/
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function bareLoginReadStreamLineOnce(stdin) {
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return new Promise((resolve) => {
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let acc = ''
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/** @param {string | Uint8Array | Buffer} chunk */
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function onData(chunk) {
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let s = ''
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if (typeof chunk === 'string') s = chunk
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else if (chunk instanceof Uint8Array) s = new TextDecoder().decode(chunk)
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else if (
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typeof Buffer !== 'undefined' &&
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typeof Buffer.isBuffer === 'function' &&
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Buffer.isBuffer(chunk)
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)
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s = chunk.toString('utf8')
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else s = String(chunk)
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acc += s
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const n = acc.indexOf('\n')
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if (n >= 0) {
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cleanup()
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resolve(acc.slice(0, n).replace(/\r$/, ''))
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}
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}
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function onEnd() {
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cleanup()
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resolve(acc.replace(/\r$/, ''))
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}
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function cleanup() {
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stdin.removeListener('data', onData)
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stdin.removeListener('end', onEnd)
|
|
stdin.removeListener('error', onEnd)
|
|
}
|
|
stdin.on('data', onData)
|
|
stdin.once('end', onEnd)
|
|
stdin.once('error', onEnd)
|
|
if (typeof stdin.resume === 'function') stdin.resume()
|
|
})
|
|
}
|
|
|
|
/**
|
|
* @param {Record<string, unknown>} ctx
|
|
* @param {import('stream').Readable} stdin
|
|
* @param {import('stream').Writable | undefined} stdout
|
|
* @returns {Promise<string>}
|
|
*/
|
|
function bareLoginReadMaskedLineOnce(ctx, stdin, stdout) {
|
|
const ttyIn = /** @type {{ setRawMode?: (v: boolean) => void, isTTY?: boolean }} */ (
|
|
stdin
|
|
)
|
|
if (!ttyIn || typeof ttyIn.setRawMode !== 'function' || !ttyIn.isTTY) {
|
|
return bareLoginReadStreamLineOnce(stdin)
|
|
}
|
|
return new Promise((resolve, reject) => {
|
|
/** @type {string[]} */
|
|
const chars = []
|
|
let done = false
|
|
/** @param {string | Uint8Array | Buffer} chunk */
|
|
function onData(chunk) {
|
|
if (done) return
|
|
let s = ''
|
|
if (typeof chunk === 'string') s = chunk
|
|
else if (chunk instanceof Uint8Array) s = new TextDecoder().decode(chunk)
|
|
else if (
|
|
typeof Buffer !== 'undefined' &&
|
|
typeof Buffer.isBuffer === 'function' &&
|
|
Buffer.isBuffer(chunk)
|
|
) {
|
|
s = chunk.toString('utf8')
|
|
} else s = String(chunk)
|
|
for (const ch of s) {
|
|
const code = ch.charCodeAt(0)
|
|
if (ch === '\r' || ch === '\n') {
|
|
finish(true)
|
|
return
|
|
}
|
|
if (ch === '\u0003') {
|
|
finish(false, new Error('interrupted'))
|
|
return
|
|
}
|
|
if (ch === '\u007f' || ch === '\b') {
|
|
if (chars.length) {
|
|
chars.pop()
|
|
bareLoginInteractiveWrite(ctx, stdout, '\b \b')
|
|
}
|
|
continue
|
|
}
|
|
if (code >= 32 && code !== 127) {
|
|
chars.push(ch)
|
|
bareLoginInteractiveWrite(ctx, stdout, '*')
|
|
}
|
|
}
|
|
}
|
|
/** @param {boolean} ok @param {Error} [err] */
|
|
function finish(ok, err) {
|
|
if (done) return
|
|
done = true
|
|
cleanup()
|
|
if (ok) resolve(chars.join(''))
|
|
else reject(err || new Error('masked_input_failed'))
|
|
}
|
|
function cleanup() {
|
|
stdin.removeListener('data', onData)
|
|
stdin.removeListener('end', onEnd)
|
|
stdin.removeListener('error', onErr)
|
|
try {
|
|
ttyIn.setRawMode(false)
|
|
} catch {
|
|
/* ignore */
|
|
}
|
|
bareLoginInteractiveWrite(ctx, stdout, '\n')
|
|
}
|
|
function onEnd() {
|
|
finish(true)
|
|
}
|
|
/** @param {unknown} e */
|
|
function onErr(e) {
|
|
const msg =
|
|
e && typeof e === 'object' && 'message' in e ? String(e.message) : String(e)
|
|
finish(false, new Error(msg))
|
|
}
|
|
try {
|
|
ttyIn.setRawMode(true)
|
|
} catch {
|
|
return resolve('')
|
|
}
|
|
stdin.on('data', onData)
|
|
stdin.once('end', onEnd)
|
|
stdin.once('error', onErr)
|
|
if (typeof stdin.resume === 'function') stdin.resume()
|
|
})
|
|
}
|
|
|
|
/**
|
|
* @param {Record<string, unknown>} ctx
|
|
* @param {string} prompt
|
|
* @returns {Promise<string>}
|
|
*/
|
|
async function bareLoginPromptMaskedLine(ctx, prompt) {
|
|
const stdin = /** @type {import('stream').Readable | undefined} */ (
|
|
ctx.replStdin || ctx.stdin
|
|
)
|
|
const stdout = /** @type {import('stream').Writable | undefined} */ (
|
|
ctx.replStdout || ctx.stdout
|
|
)
|
|
if (!stdin || typeof stdin.on !== 'function') {
|
|
throw new Error('login: stdin stream unavailable (need an interactive TTY)')
|
|
}
|
|
bareLoginInteractiveWrite(ctx, stdout, '\x1b[?25h\x1b[0m' + prompt)
|
|
return bareLoginReadMaskedLineOnce(ctx, stdin, stdout)
|
|
}
|
|
|
|
async function run(ctx, argv) {
|
|
const argv0 = argv[0] || 'login'
|
|
const args = argv.slice(1)
|
|
if (args.includes('-h') || args.includes('--help')) {
|
|
ctx.console.log(
|
|
'usage: ' +
|
|
argv0 +
|
|
' [--new]\n\n' +
|
|
'Unlock or register your identity. Run this command with no passphrase on the line;\n' +
|
|
'then type your passphrase at the prompt (hidden). A passphrase may be several words.\n' +
|
|
'Passphrases must not be given as command-line arguments (they would appear in shell history).\n\n' +
|
|
' --new register a new identity instead of unlocking an existing one.'
|
|
)
|
|
ctx.exitCode = 0
|
|
return
|
|
}
|
|
|
|
let createNew = false
|
|
if (args[0] === '--new') {
|
|
createNew = true
|
|
args.shift()
|
|
}
|
|
if (args.length > 0) {
|
|
ctx.console.error(
|
|
'login: passphrase must not be given on the command line (it would appear in shell history).'
|
|
)
|
|
ctx.console.error('Run: login' + (createNew ? ' --new' : ''))
|
|
ctx.console.error(
|
|
'Then type your passphrase at the prompt. It may be multiple words; typing is hidden.'
|
|
)
|
|
ctx.exitCode = 1
|
|
return
|
|
}
|
|
|
|
const reg = ctx.applyRegister
|
|
const unlock = ctx.applyUnlock
|
|
if (typeof reg !== 'function' || typeof unlock !== 'function') {
|
|
ctx.console.error('login: not supported in this environment')
|
|
ctx.exitCode = 1
|
|
return
|
|
}
|
|
|
|
const stdin = ctx.replStdin || ctx.stdin
|
|
const stdout = ctx.replStdout || ctx.stdout
|
|
const tty = /** @type {{ isTTY?: boolean }} */ (stdin)
|
|
if (
|
|
!stdin ||
|
|
typeof stdin.on !== 'function' ||
|
|
!tty.isTTY ||
|
|
!stdout ||
|
|
typeof stdout.write !== 'function'
|
|
) {
|
|
ctx.console.error(
|
|
'login: needs an interactive TTY (same as agent --config). Run from the shell prompt on a terminal.'
|
|
)
|
|
ctx.exitCode = 1
|
|
return
|
|
}
|
|
|
|
let suspended = false
|
|
try {
|
|
if (typeof ctx.suspendReplForSubprocess === 'function') {
|
|
ctx.suspendReplForSubprocess()
|
|
suspended = true
|
|
}
|
|
ctx.console.log(
|
|
createNew
|
|
? 'Creating a new identity. Choose a passphrase (multiple words allowed); typing is hidden.'
|
|
: 'Unlocking. Enter your passphrase (multiple words allowed); typing is hidden.'
|
|
)
|
|
let passphrase
|
|
try {
|
|
passphrase = await bareLoginPromptMaskedLine(
|
|
ctx,
|
|
createNew ? 'New passphrase: ' : 'Passphrase: '
|
|
)
|
|
} catch (e) {
|
|
ctx.console.error((e && e.message) || String(e))
|
|
ctx.exitCode = 1
|
|
return
|
|
}
|
|
if (!String(passphrase || '').trim()) {
|
|
ctx.console.error('login: empty passphrase')
|
|
ctx.exitCode = 1
|
|
return
|
|
}
|
|
try {
|
|
if (createNew) await reg.call(ctx, String(passphrase))
|
|
else await unlock.call(ctx, String(passphrase))
|
|
ctx.exitCode = 0
|
|
} catch (err) {
|
|
ctx.console.error(err?.message ?? String(err))
|
|
ctx.exitCode = 1
|
|
}
|
|
} finally {
|
|
if (suspended && typeof ctx.resumeReplAfterSubprocess === 'function') {
|
|
ctx.resumeReplAfterSubprocess()
|
|
}
|
|
}
|
|
}
|