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mkdir.js
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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.stat(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) } if (cache && cache.get(dir) === true) return done() if (dir === cwd) { 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) } 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) }