diff options
Diffstat (limited to 'deps/node/deps/npm/node_modules/tar/lib/unpack.js')
| -rw-r--r-- | deps/node/deps/npm/node_modules/tar/lib/unpack.js | 621 |
1 files changed, 0 insertions, 621 deletions
diff --git a/deps/node/deps/npm/node_modules/tar/lib/unpack.js b/deps/node/deps/npm/node_modules/tar/lib/unpack.js deleted file mode 100644 index fc765096..00000000 --- a/deps/node/deps/npm/node_modules/tar/lib/unpack.js +++ /dev/null @@ -1,621 +0,0 @@ -'use strict' - -const assert = require('assert') -const EE = require('events').EventEmitter -const Parser = require('./parse.js') -const fs = require('fs') -const fsm = require('fs-minipass') -const path = require('path') -const mkdir = require('./mkdir.js') -const mkdirSync = mkdir.sync -const wc = require('./winchars.js') - -const ONENTRY = Symbol('onEntry') -const CHECKFS = Symbol('checkFs') -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 UNKNOWN = Symbol('unknown') -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 crypto = require('crypto') - -// 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 (process.platform !== 'win32') - 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 (process.platform !== 'win32') - 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 - -class Unpack extends Parser { - constructor (opt) { - if (!opt) - opt = {} - - opt.ondone = _ => { - this[ENDED] = true - this[MAYBECLOSE]() - } - - super(opt) - - 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 || process.platform === 'win32' - - // 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 = path.resolve(opt.cwd || process.cwd()) - this.strip = +opt.strip || 0 - this.processUmask = 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)) - } - - [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 = entry.path.split(/\/|\\/) - if (parts.length < this.strip) - return false - entry.path = parts.slice(this.strip).join('/') - - if (entry.type === 'Link') { - const linkparts = entry.linkpath.split(/\/|\\/) - if (linkparts.length >= this.strip) - entry.linkpath = linkparts.slice(this.strip).join('/') - } - } - - if (!this.preservePaths) { - const p = entry.path - if (p.match(/(^|\/|\\)\.\.(\\|\/|$)/)) { - this.warn('path contains \'..\'', p) - return false - } - - // absolutes on posix are also absolutes on win32 - // so we only need to test this one to get both - if (path.win32.isAbsolute(p)) { - const parsed = path.win32.parse(p) - this.warn('stripping ' + parsed.root + ' from absolute path', p) - entry.path = p.substr(parsed.root.length) - } - } - - // only encode : chars that aren't drive letter indicators - if (this.win32) { - const parsed = path.win32.parse(entry.path) - entry.path = parsed.root === '' ? wc.encode(entry.path) - : parsed.root + wc.encode(entry.path.substr(parsed.root.length)) - } - - if (path.isAbsolute(entry.path)) - entry.absolute = entry.path - else - entry.absolute = path.resolve(this.cwd, entry.path) - - 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': - 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(er.message, er) - this[UNPEND]() - entry.resume() - } - } - - [MKDIR] (dir, mode, cb) { - mkdir(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 - }, 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) { - const mode = entry.mode & 0o7777 || this.fmode - const stream = new fsm.WriteStream(entry.absolute, { - mode: mode, - autoClose: false - }) - stream.on('error', er => this[ONERROR](er, entry)) - - let actions = 1 - const done = er => { - if (er) - return this[ONERROR](er, entry) - - if (--actions === 0) - fs.close(stream.fd, _ => this[UNPEND]()) - } - - 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)) - entry.pipe(tx) - } - tx.pipe(stream) - } - - [DIRECTORY] (entry) { - const mode = entry.mode & 0o7777 || this.dmode - this[MKDIR](entry.absolute, mode, er => { - if (er) - return this[ONERROR](er, entry) - - let actions = 1 - const done = _ => { - if (--actions === 0) { - 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) { - this.warn('unsupported entry type: ' + entry.type, entry) - entry.resume() - } - - [SYMLINK] (entry) { - this[LINK](entry, entry.linkpath, 'symlink') - } - - [HARDLINK] (entry) { - this[LINK](entry, path.resolve(this.cwd, entry.linkpath), 'link') - } - - [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 && - process.platform !== 'win32' - } - - // check if a thing is there, and if so, try to clobber it - [CHECKFS] (entry) { - this[PEND]() - this[MKDIR](path.dirname(entry.absolute), this.dmode, er => { - if (er) - return this[ONERROR](er, entry) - fs.lstat(entry.absolute, (er, st) => { - if (st && (this.keep || this.newer && st.mtime > entry.mtime)) - this[SKIP](entry) - else if (er || this[ISREUSABLE](entry, st)) - this[MAKEFS](null, entry) - else if (st.isDirectory()) { - if (entry.type === 'Directory') { - if (!entry.mode || (st.mode & 0o7777) === entry.mode) - this[MAKEFS](null, entry) - else - fs.chmod(entry.absolute, entry.mode, er => this[MAKEFS](er, entry)) - } else - fs.rmdir(entry.absolute, er => this[MAKEFS](er, entry)) - } else - unlinkFile(entry.absolute, er => this[MAKEFS](er, entry)) - }) - }) - } - - [MAKEFS] (er, entry) { - if (er) - return this[ONERROR](er, entry) - - switch (entry.type) { - case 'File': - case 'OldFile': - case 'ContiguousFile': - return this[FILE](entry) - - case 'Link': - return this[HARDLINK](entry) - - case 'SymbolicLink': - return this[SYMLINK](entry) - - case 'Directory': - case 'GNUDumpDir': - return this[DIRECTORY](entry) - } - } - - [LINK] (entry, linkpath, link) { - // XXX: get the type ('file' or 'dir') for windows - fs[link](linkpath, entry.absolute, er => { - if (er) - return this[ONERROR](er, entry) - this[UNPEND]() - entry.resume() - }) - } -} - -class UnpackSync extends Unpack { - constructor (opt) { - super(opt) - } - - [CHECKFS] (entry) { - const er = this[MKDIR](path.dirname(entry.absolute), this.dmode) - if (er) - return this[ONERROR](er, entry) - try { - const st = fs.lstatSync(entry.absolute) - if (this.keep || this.newer && st.mtime > entry.mtime) - return this[SKIP](entry) - else if (this[ISREUSABLE](entry, st)) - return this[MAKEFS](null, entry) - else { - try { - if (st.isDirectory()) { - if (entry.type === 'Directory') { - if (entry.mode && (st.mode & 0o7777) !== entry.mode) - fs.chmodSync(entry.absolute, entry.mode) - } else - fs.rmdirSync(entry.absolute) - } else - unlinkFileSync(entry.absolute) - return this[MAKEFS](null, entry) - } catch (er) { - return this[ONERROR](er, entry) - } - } - } catch (er) { - return this[MAKEFS](null, entry) - } - } - - [FILE] (entry) { - const mode = entry.mode & 0o7777 || this.fmode - - const oner = er => { - try { fs.closeSync(fd) } catch (_) {} - if (er) - this[ONERROR](er, entry) - } - - let stream - let fd - try { - fd = fs.openSync(entry.absolute, 'w', 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) { - const mode = entry.mode & 0o7777 || this.dmode - const er = this[MKDIR](entry.absolute, mode) - if (er) - return this[ONERROR](er, entry) - 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) {} - } - entry.resume() - } - - [MKDIR] (dir, mode) { - try { - return mkdir.sync(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) { - try { - fs[link + 'Sync'](linkpath, entry.absolute) - entry.resume() - } catch (er) { - return this[ONERROR](er, entry) - } - } -} - -Unpack.Sync = UnpackSync -module.exports = Unpack |