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