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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')
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 mkdir = module.exports = (dir, opt, cb) => {
// 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 = opt.cwd
const done = (er, created) => {
if (er)
cb(er)
else {
cache.set(dir, true)
if (created && doChown)
chownr(created, uid, gid, er => done(er))
else if (needChmod)
fs.chmod(dir, mode, cb)
else
cb()
}
}
if (cache && cache.get(dir) === true)
return done()
if (dir === cwd)
return fs.lstat(dir, (er, st) => {
if (er || !st.isDirectory())
er = new CwdError(dir, er && er.code || 'ENOTDIR')
done(er)
})
if (preserve)
return mkdirp(dir, mode, done)
const sub = 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 = base + '/' + p
if (cache.get(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) {
if (er.path && path.dirname(er.path) === cwd &&
(er.code === 'ENOTDIR' || er.code === 'ENOENT'))
return cb(new CwdError(cwd, er.code))
fs.lstat(part, (statEr, st) => {
if (statEr)
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 mkdirSync = module.exports.sync = (dir, opt) => {
// 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 = opt.cwd
const done = (created) => {
cache.set(dir, true)
if (created && doChown)
chownr.sync(created, uid, gid)
if (needChmod)
fs.chmodSync(dir, mode)
cache.set(dir, true)
}
if (cache && cache.get(dir) === true)
return done()
if (dir === cwd) {
let ok = false
let code = 'ENOTDIR'
try {
ok = fs.lstatSync(dir).isDirectory()
} catch (er) {
code = er.code
} finally {
if (!ok)
throw new CwdError(dir, code)
}
done()
return
}
if (preserve)
return done(mkdirp.sync(dir, mode))
const sub = path.relative(cwd, dir)
const parts = sub.split(/\/|\\/)
let created = null
for (let p = parts.shift(), part = cwd;
p && (part += '/' + p);
p = parts.shift()) {
if (cache.get(part))
continue
try {
fs.mkdirSync(part, mode)
created = created || part
cache.set(part, true)
} catch (er) {
if (er.path && path.dirname(er.path) === cwd &&
(er.code === 'ENOTDIR' || er.code === 'ENOENT'))
return new CwdError(cwd, er.code)
const st = fs.lstatSync(part)
if (st.isDirectory()) {
cache.set(part, true)
continue
} else if (unlink) {
fs.unlinkSync(part)
fs.mkdirSync(part, mode)
created = created || part
cache.set(part, true)
continue
} else if (st.isSymbolicLink())
return new SymlinkError(part, part + '/' + parts.join('/'))
}
}
return done(created)
}
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