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unpack.js

'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

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2024-03-03 10:54:13
..	dir	-	root/root	drwxr-xr-x	2024-03-03 10:54:13
create.js	text/plain	2.3 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
extract.js	text/plain	2.74 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
get-write-flag.js	text/plain	921 B	root/root	-rw-r--r--	2023-11-03 02:14:59
header.js	text/plain	8.77 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
high-level-opt.js	text/plain	760 B	root/root	-rw-r--r--	2023-11-03 02:14:59
large-numbers.js	text/plain	2.13 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
list.js	text/plain	3.09 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
mkdir.js	text/plain	5.21 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
mode-fix.js	text/plain	619 B	root/root	-rw-r--r--	2023-11-03 02:14:59
normalize-unicode.js	text/plain	405 B	root/root	-rw-r--r--	2023-11-03 02:14:59
normalize-windows-path.js	text/plain	410 B	root/root	-rw-r--r--	2023-11-03 02:14:59
pack.js	text/plain	9.22 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
parse.js	text/plain	13.86 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
path-reservations.js	text/plain	4.21 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
pax.js	text/plain	3.92 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
read-entry.js	text/plain	2.71 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
replace.js	text/plain	5.35 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
strip-absolute-path.js	text/plain	918 B	root/root	-rw-r--r--	2023-11-03 02:14:59
strip-trailing-slashes.js	text/plain	394 B	root/root	-rw-r--r--	2023-11-03 02:14:59
types.js	text/plain	1.07 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
unpack.js	text/plain	24.46 KB	root/root	-rw-r--r--	2023-11-03 02:14:59
update.js	text/plain	842 B	root/root	-rw-r--r--	2023-11-03 02:14:59
warn-mixin.js	text/plain	697 B	root/root	-rw-r--r--	2023-11-03 02:14:59
winchars.js	text/plain	535 B	root/root	-rw-r--r--	2023-11-03 02:14:59
write-entry.js	text/plain	14.76 KB	root/root	-rw-r--r--	2023-11-03 02:14:59