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'use strict'
// wrapper around mkdirp for tar's needs.
// TODO: This should probably be a class, not functionally
// passing around state in a gazillion args.
const mkdirp = require('mkdirp')
const fs = require('fs')
const path = require('path')
const chownr = require('chownr')
const normPath = require('./normalize-windows-path.js')
class SymlinkError extends Error {
constructor (symlink, path) {
super('Cannot extract through symbolic link')
this.path = path
this.symlink = symlink
}
get name () {
return 'SylinkError'
}
}
class CwdError extends Error {
constructor (path, code) {
super(code + ': Cannot cd into \'' + path + '\'')
this.path = path
this.code = code
}
get name () {
return 'CwdError'
}
}
const cGet = (cache, key) => cache.get(normPath(key))
const cSet = (cache, key, val) => cache.set(normPath(key), val)
const checkCwd = (dir, cb) => {
fs.stat(dir, (er, st) => {
if (er || !st.isDirectory()) {
er = new CwdError(dir, er && er.code || 'ENOTDIR')
}
cb(er)
})
}
module.exports = (dir, opt, cb) => {
dir = normPath(dir)
// if there's any overlap between mask and mode,
// then we'll need an explicit chmod
const umask = opt.umask
const mode = opt.mode | 0o0700
const needChmod = (mode & umask) !== 0
const uid = opt.uid
const gid = opt.gid
const doChown = typeof uid === 'number' &&
typeof gid === 'number' &&
(uid !== opt.processUid || gid !== opt.processGid)
const preserve = opt.preserve
const unlink = opt.unlink
const cache = opt.cache
const cwd = normPath(opt.cwd)
const done = (er, created) => {
if (er) {
cb(er)
} else {
cSet(cache, dir, true)
if (created && doChown) {
chownr(created, uid, gid, er => done(er))
} else if (needChmod) {
fs.chmod(dir, mode, cb)
} else {
cb()
}
}
}
if (cache && cGet(cache, dir) === true) {
return done()
}
if (dir === cwd) {
return checkCwd(dir, done)
}
if (preserve) {
return mkdirp(dir, { mode }).then(made => done(null, made), done)
}
const sub = normPath(path.relative(cwd, dir))
const parts = sub.split('/')
mkdir_(cwd, parts, mode, cache, unlink, cwd, null, done)
}
const mkdir_ = (base, parts, mode, cache, unlink, cwd, created, cb) => {
if (!parts.length) {
return cb(null, created)
}
const p = parts.shift()
const part = normPath(path.resolve(base + '/' + p))
if (cGet(cache, part)) {
return mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
}
fs.mkdir(part, mode, onmkdir(part, parts, mode, cache, unlink, cwd, created, cb))
}
const onmkdir = (part, parts, mode, cache, unlink, cwd, created, cb) => er => {
if (er) {
fs.lstat(part, (statEr, st) => {
if (statEr) {
statEr.path = statEr.path && normPath(statEr.path)
cb(statEr)
} else if (st.isDirectory()) {
mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
} else if (unlink) {
fs.unlink(part, er => {
if (er) {
return cb(er)
}
fs.mkdir(part, mode, onmkdir(part, parts, mode, cache, unlink, cwd, created, cb))
})
} else if (st.isSymbolicLink()) {
return cb(new SymlinkError(part, part + '/' + parts.join('/')))
} else {
cb(er)
}
})
} else {
created = created || part
mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
}
}
const checkCwdSync = dir => {
let ok = false
let code = 'ENOTDIR'
try {
ok = fs.statSync(dir).isDirectory()
} catch (er) {
code = er.code
} finally {
if (!ok) {
throw new CwdError(dir, code)
}
}
}
module.exports.sync = (dir, opt) => {
dir = normPath(dir)
// if there's any overlap between mask and mode,
// then we'll need an explicit chmod
const umask = opt.umask
const mode = opt.mode | 0o0700
const needChmod = (mode & umask) !== 0
const uid = opt.uid
const gid = opt.gid
const doChown = typeof uid === 'number' &&
typeof gid === 'number' &&
(uid !== opt.processUid || gid !== opt.processGid)
const preserve = opt.preserve
const unlink = opt.unlink
const cache = opt.cache
const cwd = normPath(opt.cwd)
const done = (created) => {
cSet(cache, dir, true)
if (created && doChown) {
chownr.sync(created, uid, gid)
}
if (needChmod) {
fs.chmodSync(dir, mode)
}
}
if (cache && cGet(cache, dir) === true) {
return done()
}
if (dir === cwd) {
checkCwdSync(cwd)
return done()
}
if (preserve) {
return done(mkdirp.sync(dir, mode))
}
const sub = normPath(path.relative(cwd, dir))
const parts = sub.split('/')
let created = null
for (let p = parts.shift(), part = cwd;
p && (part += '/' + p);
p = parts.shift()) {
part = normPath(path.resolve(part))
if (cGet(cache, part)) {
continue
}
try {
fs.mkdirSync(part, mode)
created = created || part
cSet(cache, part, true)
} catch (er) {
const st = fs.lstatSync(part)
if (st.isDirectory()) {
cSet(cache, part, true)
continue
} else if (unlink) {
fs.unlinkSync(part)
fs.mkdirSync(part, mode)
created = created || part
cSet(cache, part, true)
continue
} else if (st.isSymbolicLink()) {
return new SymlinkError(part, part + '/' + parts.join('/'))
}
}
}
return done(created)
}