878 lines
24 KiB
JavaScript
878 lines
24 KiB
JavaScript
'use strict'
|
|
|
|
// the PEND/UNPEND stuff tracks whether we're ready to emit end/close yet.
|
|
// but the path reservations are required to avoid race conditions where
|
|
// parallelized unpack ops may mess with one another, due to dependencies
|
|
// (like a Link depending on its target) or destructive operations (like
|
|
// clobbering an fs object to create one of a different type.)
|
|
|
|
const assert = require('assert')
|
|
const Parser = require('./parse.js')
|
|
const fs = require('fs')
|
|
const fsm = require('fs-minipass')
|
|
const path = require('path')
|
|
const mkdir = require('./mkdir.js')
|
|
const wc = require('./winchars.js')
|
|
const pathReservations = require('./path-reservations.js')
|
|
const stripAbsolutePath = require('./strip-absolute-path.js')
|
|
const normPath = require('./normalize-windows-path.js')
|
|
const stripSlash = require('./strip-trailing-slashes.js')
|
|
const normalize = require('./normalize-unicode.js')
|
|
|
|
const ONENTRY = Symbol('onEntry')
|
|
const CHECKFS = Symbol('checkFs')
|
|
const CHECKFS2 = Symbol('checkFs2')
|
|
const PRUNECACHE = Symbol('pruneCache')
|
|
const ISREUSABLE = Symbol('isReusable')
|
|
const MAKEFS = Symbol('makeFs')
|
|
const FILE = Symbol('file')
|
|
const DIRECTORY = Symbol('directory')
|
|
const LINK = Symbol('link')
|
|
const SYMLINK = Symbol('symlink')
|
|
const HARDLINK = Symbol('hardlink')
|
|
const UNSUPPORTED = Symbol('unsupported')
|
|
const CHECKPATH = Symbol('checkPath')
|
|
const MKDIR = Symbol('mkdir')
|
|
const ONERROR = Symbol('onError')
|
|
const PENDING = Symbol('pending')
|
|
const PEND = Symbol('pend')
|
|
const UNPEND = Symbol('unpend')
|
|
const ENDED = Symbol('ended')
|
|
const MAYBECLOSE = Symbol('maybeClose')
|
|
const SKIP = Symbol('skip')
|
|
const DOCHOWN = Symbol('doChown')
|
|
const UID = Symbol('uid')
|
|
const GID = Symbol('gid')
|
|
const CHECKED_CWD = Symbol('checkedCwd')
|
|
const crypto = require('crypto')
|
|
const getFlag = require('./get-write-flag.js')
|
|
const platform = process.env.TESTING_TAR_FAKE_PLATFORM || process.platform
|
|
const isWindows = platform === 'win32'
|
|
|
|
// Unlinks on Windows are not atomic.
|
|
//
|
|
// This means that if you have a file entry, followed by another
|
|
// file entry with an identical name, and you cannot re-use the file
|
|
// (because it's a hardlink, or because unlink:true is set, or it's
|
|
// Windows, which does not have useful nlink values), then the unlink
|
|
// will be committed to the disk AFTER the new file has been written
|
|
// over the old one, deleting the new file.
|
|
//
|
|
// To work around this, on Windows systems, we rename the file and then
|
|
// delete the renamed file. It's a sloppy kludge, but frankly, I do not
|
|
// know of a better way to do this, given windows' non-atomic unlink
|
|
// semantics.
|
|
//
|
|
// See: https://github.com/npm/node-tar/issues/183
|
|
/* istanbul ignore next */
|
|
const unlinkFile = (path, cb) => {
|
|
if (!isWindows)
|
|
return fs.unlink(path, cb)
|
|
|
|
const name = path + '.DELETE.' + crypto.randomBytes(16).toString('hex')
|
|
fs.rename(path, name, er => {
|
|
if (er)
|
|
return cb(er)
|
|
fs.unlink(name, cb)
|
|
})
|
|
}
|
|
|
|
/* istanbul ignore next */
|
|
const unlinkFileSync = path => {
|
|
if (!isWindows)
|
|
return fs.unlinkSync(path)
|
|
|
|
const name = path + '.DELETE.' + crypto.randomBytes(16).toString('hex')
|
|
fs.renameSync(path, name)
|
|
fs.unlinkSync(name)
|
|
}
|
|
|
|
// this.gid, entry.gid, this.processUid
|
|
const uint32 = (a, b, c) =>
|
|
a === a >>> 0 ? a
|
|
: b === b >>> 0 ? b
|
|
: c
|
|
|
|
// clear the cache if it's a case-insensitive unicode-squashing match.
|
|
// we can't know if the current file system is case-sensitive or supports
|
|
// unicode fully, so we check for similarity on the maximally compatible
|
|
// representation. Err on the side of pruning, since all it's doing is
|
|
// preventing lstats, and it's not the end of the world if we get a false
|
|
// positive.
|
|
// Note that on windows, we always drop the entire cache whenever a
|
|
// symbolic link is encountered, because 8.3 filenames are impossible
|
|
// to reason about, and collisions are hazards rather than just failures.
|
|
const cacheKeyNormalize = path => normalize(stripSlash(normPath(path)))
|
|
.toLowerCase()
|
|
|
|
const pruneCache = (cache, abs) => {
|
|
abs = cacheKeyNormalize(abs)
|
|
for (const path of cache.keys()) {
|
|
const pnorm = cacheKeyNormalize(path)
|
|
if (pnorm === abs || pnorm.indexOf(abs + '/') === 0)
|
|
cache.delete(path)
|
|
}
|
|
}
|
|
|
|
const dropCache = cache => {
|
|
for (const key of cache.keys())
|
|
cache.delete(key)
|
|
}
|
|
|
|
class Unpack extends Parser {
|
|
constructor (opt) {
|
|
if (!opt)
|
|
opt = {}
|
|
|
|
opt.ondone = _ => {
|
|
this[ENDED] = true
|
|
this[MAYBECLOSE]()
|
|
}
|
|
|
|
super(opt)
|
|
|
|
this[CHECKED_CWD] = false
|
|
|
|
this.reservations = pathReservations()
|
|
|
|
this.transform = typeof opt.transform === 'function' ? opt.transform : null
|
|
|
|
this.writable = true
|
|
this.readable = false
|
|
|
|
this[PENDING] = 0
|
|
this[ENDED] = false
|
|
|
|
this.dirCache = opt.dirCache || new Map()
|
|
|
|
if (typeof opt.uid === 'number' || typeof opt.gid === 'number') {
|
|
// need both or neither
|
|
if (typeof opt.uid !== 'number' || typeof opt.gid !== 'number')
|
|
throw new TypeError('cannot set owner without number uid and gid')
|
|
if (opt.preserveOwner) {
|
|
throw new TypeError(
|
|
'cannot preserve owner in archive and also set owner explicitly')
|
|
}
|
|
this.uid = opt.uid
|
|
this.gid = opt.gid
|
|
this.setOwner = true
|
|
} else {
|
|
this.uid = null
|
|
this.gid = null
|
|
this.setOwner = false
|
|
}
|
|
|
|
// default true for root
|
|
if (opt.preserveOwner === undefined && typeof opt.uid !== 'number')
|
|
this.preserveOwner = process.getuid && process.getuid() === 0
|
|
else
|
|
this.preserveOwner = !!opt.preserveOwner
|
|
|
|
this.processUid = (this.preserveOwner || this.setOwner) && process.getuid ?
|
|
process.getuid() : null
|
|
this.processGid = (this.preserveOwner || this.setOwner) && process.getgid ?
|
|
process.getgid() : null
|
|
|
|
// mostly just for testing, but useful in some cases.
|
|
// Forcibly trigger a chown on every entry, no matter what
|
|
this.forceChown = opt.forceChown === true
|
|
|
|
// turn ><?| in filenames into 0xf000-higher encoded forms
|
|
this.win32 = !!opt.win32 || isWindows
|
|
|
|
// do not unpack over files that are newer than what's in the archive
|
|
this.newer = !!opt.newer
|
|
|
|
// do not unpack over ANY files
|
|
this.keep = !!opt.keep
|
|
|
|
// do not set mtime/atime of extracted entries
|
|
this.noMtime = !!opt.noMtime
|
|
|
|
// allow .., absolute path entries, and unpacking through symlinks
|
|
// without this, warn and skip .., relativize absolutes, and error
|
|
// on symlinks in extraction path
|
|
this.preservePaths = !!opt.preservePaths
|
|
|
|
// unlink files and links before writing. This breaks existing hard
|
|
// links, and removes symlink directories rather than erroring
|
|
this.unlink = !!opt.unlink
|
|
|
|
this.cwd = normPath(path.resolve(opt.cwd || process.cwd()))
|
|
this.strip = +opt.strip || 0
|
|
// if we're not chmodding, then we don't need the process umask
|
|
this.processUmask = opt.noChmod ? 0 : process.umask()
|
|
this.umask = typeof opt.umask === 'number' ? opt.umask : this.processUmask
|
|
|
|
// default mode for dirs created as parents
|
|
this.dmode = opt.dmode || (0o0777 & (~this.umask))
|
|
this.fmode = opt.fmode || (0o0666 & (~this.umask))
|
|
|
|
this.on('entry', entry => this[ONENTRY](entry))
|
|
}
|
|
|
|
// a bad or damaged archive is a warning for Parser, but an error
|
|
// when extracting. Mark those errors as unrecoverable, because
|
|
// the Unpack contract cannot be met.
|
|
warn (code, msg, data = {}) {
|
|
if (code === 'TAR_BAD_ARCHIVE' || code === 'TAR_ABORT')
|
|
data.recoverable = false
|
|
return super.warn(code, msg, data)
|
|
}
|
|
|
|
[MAYBECLOSE] () {
|
|
if (this[ENDED] && this[PENDING] === 0) {
|
|
this.emit('prefinish')
|
|
this.emit('finish')
|
|
this.emit('end')
|
|
this.emit('close')
|
|
}
|
|
}
|
|
|
|
[CHECKPATH] (entry) {
|
|
if (this.strip) {
|
|
const parts = normPath(entry.path).split('/')
|
|
if (parts.length < this.strip)
|
|
return false
|
|
entry.path = parts.slice(this.strip).join('/')
|
|
|
|
if (entry.type === 'Link') {
|
|
const linkparts = normPath(entry.linkpath).split('/')
|
|
if (linkparts.length >= this.strip)
|
|
entry.linkpath = linkparts.slice(this.strip).join('/')
|
|
else
|
|
return false
|
|
}
|
|
}
|
|
|
|
if (!this.preservePaths) {
|
|
const p = normPath(entry.path)
|
|
const parts = p.split('/')
|
|
if (parts.includes('..') || isWindows && /^[a-z]:\.\.$/i.test(parts[0])) {
|
|
this.warn('TAR_ENTRY_ERROR', `path contains '..'`, {
|
|
entry,
|
|
path: p,
|
|
})
|
|
return false
|
|
}
|
|
|
|
// strip off the root
|
|
const [root, stripped] = stripAbsolutePath(p)
|
|
if (root) {
|
|
entry.path = stripped
|
|
this.warn('TAR_ENTRY_INFO', `stripping ${root} from absolute path`, {
|
|
entry,
|
|
path: p,
|
|
})
|
|
}
|
|
}
|
|
|
|
if (path.isAbsolute(entry.path))
|
|
entry.absolute = normPath(path.resolve(entry.path))
|
|
else
|
|
entry.absolute = normPath(path.resolve(this.cwd, entry.path))
|
|
|
|
// if we somehow ended up with a path that escapes the cwd, and we are
|
|
// not in preservePaths mode, then something is fishy! This should have
|
|
// been prevented above, so ignore this for coverage.
|
|
/* istanbul ignore if - defense in depth */
|
|
if (!this.preservePaths &&
|
|
entry.absolute.indexOf(this.cwd + '/') !== 0 &&
|
|
entry.absolute !== this.cwd) {
|
|
this.warn('TAR_ENTRY_ERROR', 'path escaped extraction target', {
|
|
entry,
|
|
path: normPath(entry.path),
|
|
resolvedPath: entry.absolute,
|
|
cwd: this.cwd,
|
|
})
|
|
return false
|
|
}
|
|
|
|
// an archive can set properties on the extraction directory, but it
|
|
// may not replace the cwd with a different kind of thing entirely.
|
|
if (entry.absolute === this.cwd &&
|
|
entry.type !== 'Directory' &&
|
|
entry.type !== 'GNUDumpDir')
|
|
return false
|
|
|
|
// only encode : chars that aren't drive letter indicators
|
|
if (this.win32) {
|
|
const { root: aRoot } = path.win32.parse(entry.absolute)
|
|
entry.absolute = aRoot + wc.encode(entry.absolute.substr(aRoot.length))
|
|
const { root: pRoot } = path.win32.parse(entry.path)
|
|
entry.path = pRoot + wc.encode(entry.path.substr(pRoot.length))
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
[ONENTRY] (entry) {
|
|
if (!this[CHECKPATH](entry))
|
|
return entry.resume()
|
|
|
|
assert.equal(typeof entry.absolute, 'string')
|
|
|
|
switch (entry.type) {
|
|
case 'Directory':
|
|
case 'GNUDumpDir':
|
|
if (entry.mode)
|
|
entry.mode = entry.mode | 0o700
|
|
|
|
case 'File':
|
|
case 'OldFile':
|
|
case 'ContiguousFile':
|
|
case 'Link':
|
|
case 'SymbolicLink':
|
|
return this[CHECKFS](entry)
|
|
|
|
case 'CharacterDevice':
|
|
case 'BlockDevice':
|
|
case 'FIFO':
|
|
default:
|
|
return this[UNSUPPORTED](entry)
|
|
}
|
|
}
|
|
|
|
[ONERROR] (er, entry) {
|
|
// Cwd has to exist, or else nothing works. That's serious.
|
|
// Other errors are warnings, which raise the error in strict
|
|
// mode, but otherwise continue on.
|
|
if (er.name === 'CwdError')
|
|
this.emit('error', er)
|
|
else {
|
|
this.warn('TAR_ENTRY_ERROR', er, {entry})
|
|
this[UNPEND]()
|
|
entry.resume()
|
|
}
|
|
}
|
|
|
|
[MKDIR] (dir, mode, cb) {
|
|
mkdir(normPath(dir), {
|
|
uid: this.uid,
|
|
gid: this.gid,
|
|
processUid: this.processUid,
|
|
processGid: this.processGid,
|
|
umask: this.processUmask,
|
|
preserve: this.preservePaths,
|
|
unlink: this.unlink,
|
|
cache: this.dirCache,
|
|
cwd: this.cwd,
|
|
mode: mode,
|
|
noChmod: this.noChmod,
|
|
}, cb)
|
|
}
|
|
|
|
[DOCHOWN] (entry) {
|
|
// in preserve owner mode, chown if the entry doesn't match process
|
|
// in set owner mode, chown if setting doesn't match process
|
|
return this.forceChown ||
|
|
this.preserveOwner &&
|
|
(typeof entry.uid === 'number' && entry.uid !== this.processUid ||
|
|
typeof entry.gid === 'number' && entry.gid !== this.processGid)
|
|
||
|
|
(typeof this.uid === 'number' && this.uid !== this.processUid ||
|
|
typeof this.gid === 'number' && this.gid !== this.processGid)
|
|
}
|
|
|
|
[UID] (entry) {
|
|
return uint32(this.uid, entry.uid, this.processUid)
|
|
}
|
|
|
|
[GID] (entry) {
|
|
return uint32(this.gid, entry.gid, this.processGid)
|
|
}
|
|
|
|
[FILE] (entry, fullyDone) {
|
|
const mode = entry.mode & 0o7777 || this.fmode
|
|
const stream = new fsm.WriteStream(entry.absolute, {
|
|
flags: getFlag(entry.size),
|
|
mode: mode,
|
|
autoClose: false,
|
|
})
|
|
stream.on('error', er => {
|
|
if (stream.fd)
|
|
fs.close(stream.fd, () => {})
|
|
|
|
// flush all the data out so that we aren't left hanging
|
|
// if the error wasn't actually fatal. otherwise the parse
|
|
// is blocked, and we never proceed.
|
|
stream.write = () => true
|
|
this[ONERROR](er, entry)
|
|
fullyDone()
|
|
})
|
|
|
|
let actions = 1
|
|
const done = er => {
|
|
if (er) {
|
|
/* istanbul ignore else - we should always have a fd by now */
|
|
if (stream.fd)
|
|
fs.close(stream.fd, () => {})
|
|
|
|
this[ONERROR](er, entry)
|
|
fullyDone()
|
|
return
|
|
}
|
|
|
|
if (--actions === 0) {
|
|
fs.close(stream.fd, er => {
|
|
if (er)
|
|
this[ONERROR](er, entry)
|
|
else
|
|
this[UNPEND]()
|
|
fullyDone()
|
|
})
|
|
}
|
|
}
|
|
|
|
stream.on('finish', _ => {
|
|
// if futimes fails, try utimes
|
|
// if utimes fails, fail with the original error
|
|
// same for fchown/chown
|
|
const abs = entry.absolute
|
|
const fd = stream.fd
|
|
|
|
if (entry.mtime && !this.noMtime) {
|
|
actions++
|
|
const atime = entry.atime || new Date()
|
|
const mtime = entry.mtime
|
|
fs.futimes(fd, atime, mtime, er =>
|
|
er ? fs.utimes(abs, atime, mtime, er2 => done(er2 && er))
|
|
: done())
|
|
}
|
|
|
|
if (this[DOCHOWN](entry)) {
|
|
actions++
|
|
const uid = this[UID](entry)
|
|
const gid = this[GID](entry)
|
|
fs.fchown(fd, uid, gid, er =>
|
|
er ? fs.chown(abs, uid, gid, er2 => done(er2 && er))
|
|
: done())
|
|
}
|
|
|
|
done()
|
|
})
|
|
|
|
const tx = this.transform ? this.transform(entry) || entry : entry
|
|
if (tx !== entry) {
|
|
tx.on('error', er => {
|
|
this[ONERROR](er, entry)
|
|
fullyDone()
|
|
})
|
|
entry.pipe(tx)
|
|
}
|
|
tx.pipe(stream)
|
|
}
|
|
|
|
[DIRECTORY] (entry, fullyDone) {
|
|
const mode = entry.mode & 0o7777 || this.dmode
|
|
this[MKDIR](entry.absolute, mode, er => {
|
|
if (er) {
|
|
this[ONERROR](er, entry)
|
|
fullyDone()
|
|
return
|
|
}
|
|
|
|
let actions = 1
|
|
const done = _ => {
|
|
if (--actions === 0) {
|
|
fullyDone()
|
|
this[UNPEND]()
|
|
entry.resume()
|
|
}
|
|
}
|
|
|
|
if (entry.mtime && !this.noMtime) {
|
|
actions++
|
|
fs.utimes(entry.absolute, entry.atime || new Date(), entry.mtime, done)
|
|
}
|
|
|
|
if (this[DOCHOWN](entry)) {
|
|
actions++
|
|
fs.chown(entry.absolute, this[UID](entry), this[GID](entry), done)
|
|
}
|
|
|
|
done()
|
|
})
|
|
}
|
|
|
|
[UNSUPPORTED] (entry) {
|
|
entry.unsupported = true
|
|
this.warn('TAR_ENTRY_UNSUPPORTED',
|
|
`unsupported entry type: ${entry.type}`, {entry})
|
|
entry.resume()
|
|
}
|
|
|
|
[SYMLINK] (entry, done) {
|
|
this[LINK](entry, entry.linkpath, 'symlink', done)
|
|
}
|
|
|
|
[HARDLINK] (entry, done) {
|
|
const linkpath = normPath(path.resolve(this.cwd, entry.linkpath))
|
|
this[LINK](entry, linkpath, 'link', done)
|
|
}
|
|
|
|
[PEND] () {
|
|
this[PENDING]++
|
|
}
|
|
|
|
[UNPEND] () {
|
|
this[PENDING]--
|
|
this[MAYBECLOSE]()
|
|
}
|
|
|
|
[SKIP] (entry) {
|
|
this[UNPEND]()
|
|
entry.resume()
|
|
}
|
|
|
|
// Check if we can reuse an existing filesystem entry safely and
|
|
// overwrite it, rather than unlinking and recreating
|
|
// Windows doesn't report a useful nlink, so we just never reuse entries
|
|
[ISREUSABLE] (entry, st) {
|
|
return entry.type === 'File' &&
|
|
!this.unlink &&
|
|
st.isFile() &&
|
|
st.nlink <= 1 &&
|
|
!isWindows
|
|
}
|
|
|
|
// check if a thing is there, and if so, try to clobber it
|
|
[CHECKFS] (entry) {
|
|
this[PEND]()
|
|
const paths = [entry.path]
|
|
if (entry.linkpath)
|
|
paths.push(entry.linkpath)
|
|
this.reservations.reserve(paths, done => this[CHECKFS2](entry, done))
|
|
}
|
|
|
|
[PRUNECACHE] (entry) {
|
|
// if we are not creating a directory, and the path is in the dirCache,
|
|
// then that means we are about to delete the directory we created
|
|
// previously, and it is no longer going to be a directory, and neither
|
|
// is any of its children.
|
|
// If a symbolic link is encountered, all bets are off. There is no
|
|
// reasonable way to sanitize the cache in such a way we will be able to
|
|
// avoid having filesystem collisions. If this happens with a non-symlink
|
|
// entry, it'll just fail to unpack, but a symlink to a directory, using an
|
|
// 8.3 shortname or certain unicode attacks, can evade detection and lead
|
|
// to arbitrary writes to anywhere on the system.
|
|
if (entry.type === 'SymbolicLink')
|
|
dropCache(this.dirCache)
|
|
else if (entry.type !== 'Directory')
|
|
pruneCache(this.dirCache, entry.absolute)
|
|
}
|
|
|
|
[CHECKFS2] (entry, fullyDone) {
|
|
this[PRUNECACHE](entry)
|
|
|
|
const done = er => {
|
|
this[PRUNECACHE](entry)
|
|
fullyDone(er)
|
|
}
|
|
|
|
const checkCwd = () => {
|
|
this[MKDIR](this.cwd, this.dmode, er => {
|
|
if (er) {
|
|
this[ONERROR](er, entry)
|
|
done()
|
|
return
|
|
}
|
|
this[CHECKED_CWD] = true
|
|
start()
|
|
})
|
|
}
|
|
|
|
const start = () => {
|
|
if (entry.absolute !== this.cwd) {
|
|
const parent = normPath(path.dirname(entry.absolute))
|
|
if (parent !== this.cwd) {
|
|
return this[MKDIR](parent, this.dmode, er => {
|
|
if (er) {
|
|
this[ONERROR](er, entry)
|
|
done()
|
|
return
|
|
}
|
|
afterMakeParent()
|
|
})
|
|
}
|
|
}
|
|
afterMakeParent()
|
|
}
|
|
|
|
const afterMakeParent = () => {
|
|
fs.lstat(entry.absolute, (lstatEr, st) => {
|
|
if (st && (this.keep || this.newer && st.mtime > entry.mtime)) {
|
|
this[SKIP](entry)
|
|
done()
|
|
return
|
|
}
|
|
if (lstatEr || this[ISREUSABLE](entry, st))
|
|
return this[MAKEFS](null, entry, done)
|
|
|
|
if (st.isDirectory()) {
|
|
if (entry.type === 'Directory') {
|
|
const needChmod = !this.noChmod &&
|
|
entry.mode &&
|
|
(st.mode & 0o7777) !== entry.mode
|
|
const afterChmod = er => this[MAKEFS](er, entry, done)
|
|
if (!needChmod)
|
|
return afterChmod()
|
|
return fs.chmod(entry.absolute, entry.mode, afterChmod)
|
|
}
|
|
// Not a dir entry, have to remove it.
|
|
// NB: the only way to end up with an entry that is the cwd
|
|
// itself, in such a way that == does not detect, is a
|
|
// tricky windows absolute path with UNC or 8.3 parts (and
|
|
// preservePaths:true, or else it will have been stripped).
|
|
// In that case, the user has opted out of path protections
|
|
// explicitly, so if they blow away the cwd, c'est la vie.
|
|
if (entry.absolute !== this.cwd) {
|
|
return fs.rmdir(entry.absolute, er =>
|
|
this[MAKEFS](er, entry, done))
|
|
}
|
|
}
|
|
|
|
// not a dir, and not reusable
|
|
// don't remove if the cwd, we want that error
|
|
if (entry.absolute === this.cwd)
|
|
return this[MAKEFS](null, entry, done)
|
|
|
|
unlinkFile(entry.absolute, er =>
|
|
this[MAKEFS](er, entry, done))
|
|
})
|
|
}
|
|
|
|
if (this[CHECKED_CWD])
|
|
start()
|
|
else
|
|
checkCwd()
|
|
}
|
|
|
|
[MAKEFS] (er, entry, done) {
|
|
if (er) {
|
|
this[ONERROR](er, entry)
|
|
done()
|
|
return
|
|
}
|
|
|
|
switch (entry.type) {
|
|
case 'File':
|
|
case 'OldFile':
|
|
case 'ContiguousFile':
|
|
return this[FILE](entry, done)
|
|
|
|
case 'Link':
|
|
return this[HARDLINK](entry, done)
|
|
|
|
case 'SymbolicLink':
|
|
return this[SYMLINK](entry, done)
|
|
|
|
case 'Directory':
|
|
case 'GNUDumpDir':
|
|
return this[DIRECTORY](entry, done)
|
|
}
|
|
}
|
|
|
|
[LINK] (entry, linkpath, link, done) {
|
|
// XXX: get the type ('symlink' or 'junction') for windows
|
|
fs[link](linkpath, entry.absolute, er => {
|
|
if (er)
|
|
this[ONERROR](er, entry)
|
|
else {
|
|
this[UNPEND]()
|
|
entry.resume()
|
|
}
|
|
done()
|
|
})
|
|
}
|
|
}
|
|
|
|
const callSync = fn => {
|
|
try {
|
|
return [null, fn()]
|
|
} catch (er) {
|
|
return [er, null]
|
|
}
|
|
}
|
|
class UnpackSync extends Unpack {
|
|
[MAKEFS] (er, entry) {
|
|
return super[MAKEFS](er, entry, () => {})
|
|
}
|
|
|
|
[CHECKFS] (entry) {
|
|
this[PRUNECACHE](entry)
|
|
|
|
if (!this[CHECKED_CWD]) {
|
|
const er = this[MKDIR](this.cwd, this.dmode)
|
|
if (er)
|
|
return this[ONERROR](er, entry)
|
|
this[CHECKED_CWD] = true
|
|
}
|
|
|
|
// don't bother to make the parent if the current entry is the cwd,
|
|
// we've already checked it.
|
|
if (entry.absolute !== this.cwd) {
|
|
const parent = normPath(path.dirname(entry.absolute))
|
|
if (parent !== this.cwd) {
|
|
const mkParent = this[MKDIR](parent, this.dmode)
|
|
if (mkParent)
|
|
return this[ONERROR](mkParent, entry)
|
|
}
|
|
}
|
|
|
|
const [lstatEr, st] = callSync(() => fs.lstatSync(entry.absolute))
|
|
if (st && (this.keep || this.newer && st.mtime > entry.mtime))
|
|
return this[SKIP](entry)
|
|
|
|
if (lstatEr || this[ISREUSABLE](entry, st))
|
|
return this[MAKEFS](null, entry)
|
|
|
|
if (st.isDirectory()) {
|
|
if (entry.type === 'Directory') {
|
|
const needChmod = !this.noChmod &&
|
|
entry.mode &&
|
|
(st.mode & 0o7777) !== entry.mode
|
|
const [er] = needChmod ? callSync(() => {
|
|
fs.chmodSync(entry.absolute, entry.mode)
|
|
}) : []
|
|
return this[MAKEFS](er, entry)
|
|
}
|
|
// not a dir entry, have to remove it
|
|
const [er] = callSync(() => fs.rmdirSync(entry.absolute))
|
|
this[MAKEFS](er, entry)
|
|
}
|
|
|
|
// not a dir, and not reusable.
|
|
// don't remove if it's the cwd, since we want that error.
|
|
const [er] = entry.absolute === this.cwd ? []
|
|
: callSync(() => unlinkFileSync(entry.absolute))
|
|
this[MAKEFS](er, entry)
|
|
}
|
|
|
|
[FILE] (entry, done) {
|
|
const mode = entry.mode & 0o7777 || this.fmode
|
|
|
|
const oner = er => {
|
|
let closeError
|
|
try {
|
|
fs.closeSync(fd)
|
|
} catch (e) {
|
|
closeError = e
|
|
}
|
|
if (er || closeError)
|
|
this[ONERROR](er || closeError, entry)
|
|
done()
|
|
}
|
|
|
|
let fd
|
|
try {
|
|
fd = fs.openSync(entry.absolute, getFlag(entry.size), mode)
|
|
} catch (er) {
|
|
return oner(er)
|
|
}
|
|
const tx = this.transform ? this.transform(entry) || entry : entry
|
|
if (tx !== entry) {
|
|
tx.on('error', er => this[ONERROR](er, entry))
|
|
entry.pipe(tx)
|
|
}
|
|
|
|
tx.on('data', chunk => {
|
|
try {
|
|
fs.writeSync(fd, chunk, 0, chunk.length)
|
|
} catch (er) {
|
|
oner(er)
|
|
}
|
|
})
|
|
|
|
tx.on('end', _ => {
|
|
let er = null
|
|
// try both, falling futimes back to utimes
|
|
// if either fails, handle the first error
|
|
if (entry.mtime && !this.noMtime) {
|
|
const atime = entry.atime || new Date()
|
|
const mtime = entry.mtime
|
|
try {
|
|
fs.futimesSync(fd, atime, mtime)
|
|
} catch (futimeser) {
|
|
try {
|
|
fs.utimesSync(entry.absolute, atime, mtime)
|
|
} catch (utimeser) {
|
|
er = futimeser
|
|
}
|
|
}
|
|
}
|
|
|
|
if (this[DOCHOWN](entry)) {
|
|
const uid = this[UID](entry)
|
|
const gid = this[GID](entry)
|
|
|
|
try {
|
|
fs.fchownSync(fd, uid, gid)
|
|
} catch (fchowner) {
|
|
try {
|
|
fs.chownSync(entry.absolute, uid, gid)
|
|
} catch (chowner) {
|
|
er = er || fchowner
|
|
}
|
|
}
|
|
}
|
|
|
|
oner(er)
|
|
})
|
|
}
|
|
|
|
[DIRECTORY] (entry, done) {
|
|
const mode = entry.mode & 0o7777 || this.dmode
|
|
const er = this[MKDIR](entry.absolute, mode)
|
|
if (er) {
|
|
this[ONERROR](er, entry)
|
|
done()
|
|
return
|
|
}
|
|
if (entry.mtime && !this.noMtime) {
|
|
try {
|
|
fs.utimesSync(entry.absolute, entry.atime || new Date(), entry.mtime)
|
|
} catch (er) {}
|
|
}
|
|
if (this[DOCHOWN](entry)) {
|
|
try {
|
|
fs.chownSync(entry.absolute, this[UID](entry), this[GID](entry))
|
|
} catch (er) {}
|
|
}
|
|
done()
|
|
entry.resume()
|
|
}
|
|
|
|
[MKDIR] (dir, mode) {
|
|
try {
|
|
return mkdir.sync(normPath(dir), {
|
|
uid: this.uid,
|
|
gid: this.gid,
|
|
processUid: this.processUid,
|
|
processGid: this.processGid,
|
|
umask: this.processUmask,
|
|
preserve: this.preservePaths,
|
|
unlink: this.unlink,
|
|
cache: this.dirCache,
|
|
cwd: this.cwd,
|
|
mode: mode,
|
|
})
|
|
} catch (er) {
|
|
return er
|
|
}
|
|
}
|
|
|
|
[LINK] (entry, linkpath, link, done) {
|
|
try {
|
|
fs[link + 'Sync'](linkpath, entry.absolute)
|
|
done()
|
|
entry.resume()
|
|
} catch (er) {
|
|
return this[ONERROR](er, entry)
|
|
}
|
|
}
|
|
}
|
|
|
|
Unpack.Sync = UnpackSync
|
|
module.exports = Unpack
|