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var log = require("./log.js")
, fs = require("graceful-fs")
, path = require("path")
, npm = require("../npm.js")
, exec = require("./exec.js")
, uidNumber = require("./uid-number.js")
, umask = process.umask()
, umaskOrig = umask
, addedUmaskExit = false
, mkdirCache = {}
module.exports = mkdir
function mkdir (ensure, mode, uid, gid, noChmod, cb_) {
if (typeof cb_ !== "function") cb_ = noChmod, noChmod = null
if (typeof cb_ !== "function") cb_ = gid, gid = null
if (typeof cb_ !== "function") cb_ = uid, uid = null
if (typeof cb_ !== "function") cb_ = mode, mode = npm.modes.exec
if (mode & umask) {
log.verbose(mode.toString(8), "umasking from "+umask.toString(8))
process.umask(umask = 0)
if (!addedUmaskExit) {
addedUmaskExit = true
process.on("exit", function () { process.umask(umask = umaskOrig) })
}
}
ensure = path.resolve(ensure).replace(/\/+$/, '')
// mkdir("/") should not do anything, since that always exists.
if (!ensure
|| ( process.platform === "win32"
&& ensure.match(/^[a-zA-Z]:(\\|\/)?$/))) {
return cb_()
}
if (mkdirCache.hasOwnProperty(ensure)) {
return mkdirCache[ensure].push(cb_)
}
mkdirCache[ensure] = [cb_]
function cb (er) {
var cbs = mkdirCache[ensure]
delete mkdirCache[ensure]
cbs.forEach(function (c) { c(er) })
}
if (uid === null && gid === null) {
return mkdir_(ensure, mode, uid, gid, noChmod, cb)
}
uidNumber(uid, gid, function (er, uid, gid) {
if (er) return cb(er)
mkdir_(ensure, mode, uid, gid, noChmod, cb)
})
}
function mkdir_ (ensure, mode, uid, gid, noChmod, cb) {
// if it's already a dir, then just check the bits and owner.
fs.stat(ensure, function (er, s) {
if (s && s.isDirectory()) {
// check mode, uid, and gid.
if ((noChmod || (s.mode & mode) === mode)
&& (typeof uid !== "number" || s.uid === uid)
&& (typeof gid !== "number" || s.gid === gid)) return cb()
return done(ensure, mode, uid, gid, noChmod, cb)
}
return walkDirs(ensure, mode, uid, gid, noChmod, cb)
})
}
function done (ensure, mode, uid, gid, noChmod, cb) {
// now the directory has been created.
// chown it to the desired uid/gid
// Don't chown the npm.root dir, though, in case we're
// in unsafe-perm mode.
log.verbose("done: "+ensure+" "+mode.toString(8), "mkdir")
// only chmod if noChmod isn't set.
var d = done_(ensure, mode, uid, gid, cb)
if (noChmod) return d()
fs.chmod(ensure, mode, d)
}
function done_ (ensure, mode, uid, gid, cb) {
return function (er) {
if (er
|| ensure === npm.dir
|| typeof uid !== "number"
|| typeof gid !== "number"
|| npm.config.get("unsafe-perm")) return cb(er)
uid = Math.floor(uid)
gid = Math.floor(gid)
fs.chown(ensure, uid, gid, cb)
}
}
var pathSplit = process.platform === "win32" ? /\/|\\/ : "/"
function walkDirs (ensure, mode, uid, gid, noChmod, cb) {
var dirs = ensure.split(pathSplit)
, walker = []
, foundUID = null
, foundGID = null
// gobble the "/" or C: first
walker.push(dirs.shift())
// The loop that goes through and stats each dir.
;(function S (d) {
// no more directory steps left.
if (d === undefined) {
// do the chown stuff
return done(ensure, mode, uid, gid, noChmod, cb)
}
// get the absolute dir for the next piece being stat'd
walker.push(d)
var dir = walker.join(path.SPLIT_CHAR)
// stat callback lambda
fs.stat(dir, function STATCB (er, s) {
if (er) {
// the stat failed - directory does not exist.
log.verbose(er.message, "mkdir (expected) error")
// use the same uid/gid as the nearest parent, if not set.
if (foundUID !== null) uid = foundUID
if (foundGID !== null) gid = foundGID
// make the directory
fs.mkdir(dir, mode, function MKDIRCB (er) {
// since stat and mkdir are done as two separate syscalls,
// operating on a path rather than a file descriptor, it's
// possible that the directory didn't exist when we did
// the stat, but then *did* exist when we go to to the mkdir.
// If we didn't care about uid/gid, we could just mkdir
// repeatedly, failing on any error other than "EEXIST".
if (er && er.message.indexOf("EEXIST") === 0) {
return fs.stat(dir, STATCB)
}
// any other kind of error is not saveable.
if (er) return cb(er)
// at this point, we've just created a new directory successfully.
// if we care about permissions
if (!npm.config.get("unsafe-perm") // care about permissions
// specified a uid and gid
&& uid !== null
&& gid !== null ) {
// set the proper ownership
return fs.chown(dir, uid, gid, function (er) {
if (er) return cb(er)
// attack the next portion of the path.
S(dirs.shift())
})
} else {
// either we don't care about ownership, or it's already right.
S(dirs.shift())
}
}) // mkdir
} else {
// the stat succeeded.
if (s.isDirectory()) {
// if it's a directory, that's good.
// if the uid and gid aren't already set, then try to preserve
// the ownership on up the tree. Things in ~ remain owned by
// the user, things in / remain owned by root, etc.
if (uid === null && typeof s.uid === "number") foundUID = s.uid
if (gid === null && typeof s.gid === "number") foundGID = s.gid
// move onto next portion of path
S(dirs.shift())
} else {
// the stat succeeded, but it's not a directory
log.verbose(dir, "mkdir exists")
log.silly(s, "stat("+dir+")")
log.verbose(s.isDirectory(), "isDirectory()")
cb(new Error("Failed to mkdir "+dir+": File exists"))
}// if (isDirectory) else
} // if (stat failed) else
}) // stat
// start the S function with the first item in the list of directories.
})(dirs.shift())
}
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