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110 lines
2.7 KiB
110 lines
2.7 KiB
var chownr = require('chownr')
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var dezalgo = require('dezalgo')
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var fs = require('graceful-fs')
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var inflight = require('inflight')
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var log = require('npmlog')
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var mkdirp = require('mkdirp')
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// memoize the directories created by this step
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var stats = {}
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var effectiveOwner
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module.exports = function correctMkdir (path, cb) {
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cb = dezalgo(cb)
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if (stats[path]) return cb(null, stats[path])
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fs.stat(path, function (er, st) {
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if (er) return makeDirectory(path, cb)
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if (!st.isDirectory()) {
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log.error('correctMkdir', 'invalid dir %s', path)
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return cb(er)
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}
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var ownerStats = calculateOwner()
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// there's always a chance the permissions could have been frobbed, so fix
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if (st.uid !== ownerStats.uid) {
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stats[path] = ownerStats
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setPermissions(path, ownerStats, cb)
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} else {
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stats[path] = st
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cb(null, stats[path])
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}
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})
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}
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function calculateOwner () {
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if (!effectiveOwner) {
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effectiveOwner = { uid: 0, gid: 0 }
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if (process.getuid) effectiveOwner.uid = +process.getuid()
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if (process.getgid) effectiveOwner.gid = +process.getgid()
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if (effectiveOwner.uid === 0) {
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if (process.env.SUDO_UID) effectiveOwner.uid = +process.env.SUDO_UID
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if (process.env.SUDO_GID) effectiveOwner.gid = +process.env.SUDO_GID
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}
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}
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return effectiveOwner
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}
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function makeDirectory (path, cb) {
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cb = inflight('makeDirectory:' + path, cb)
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if (!cb) {
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return log.verbose('makeDirectory', path, 'creation already in flight; waiting')
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} else {
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log.verbose('makeDirectory', path, 'creation not in flight; initializing')
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}
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var owner = calculateOwner()
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if (!process.getuid) {
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return mkdirp(path, function (er) {
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log.verbose('makeCacheDir', 'UID & GID are irrelevant on', process.platform)
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stats[path] = owner
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return cb(er, stats[path])
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})
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}
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if (owner.uid !== 0 || !process.env.HOME) {
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log.silly(
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'makeDirectory', path,
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'uid:', owner.uid,
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'gid:', owner.gid
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)
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stats[path] = owner
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mkdirp(path, afterMkdir)
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} else {
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fs.stat(process.env.HOME, function (er, st) {
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if (er) {
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log.error('makeDirectory', 'homeless?')
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return cb(er)
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}
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log.silly(
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'makeDirectory', path,
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'uid:', st.uid,
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'gid:', st.gid
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)
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stats[path] = st
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mkdirp(path, afterMkdir)
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})
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}
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function afterMkdir (er, made) {
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if (er || !stats[path] || isNaN(stats[path].uid) || isNaN(stats[path].gid)) {
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return cb(er, stats[path])
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}
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if (!made) return cb(er, stats[path])
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setPermissions(made, stats[path], cb)
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}
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}
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function setPermissions (path, st, cb) {
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chownr(path, st.uid, st.gid, function (er) {
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return cb(er, st)
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})
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}
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