├── LICENSE
├── README.md
├── get-uid-gid.js
├── package.json
└── uid-number.js


/LICENSE:
--------------------------------------------------------------------------------
 1 | The ISC License
 2 | 
 3 | Copyright (c) Isaac Z. Schlueter
 4 | 
 5 | Permission to use, copy, modify, and/or distribute this software for any
 6 | purpose with or without fee is hereby granted, provided that the above
 7 | copyright notice and this permission notice appear in all copies.
 8 | 
 9 | THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 | WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 | MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 | ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
15 | IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | Use this module to convert a username/groupname to a uid/gid number.
 2 | 
 3 | Usage:
 4 | 
 5 | ```
 6 | npm install uid-number
 7 | ```
 8 | 
 9 | Then, in your node program:
10 | 
11 | ```javascript
12 | var uidNumber = require("uid-number")
13 | uidNumber("isaacs", function (er, uid, gid) {
14 |   // gid is null because we didn't ask for a group name
15 |   // uid === 24561 because that's my number.
16 | })
17 | ```
18 | 


--------------------------------------------------------------------------------
/get-uid-gid.js:
--------------------------------------------------------------------------------
 1 | if (module !== require.main) {
 2 |   throw new Error("This file should not be loaded with require()")
 3 | }
 4 | 
 5 | if (!process.getuid || !process.getgid) {
 6 |   throw new Error("this file should not be called without uid/gid support")
 7 | }
 8 | 
 9 | var argv = process.argv.slice(2)
10 |   , user = argv[0] || process.getuid()
11 |   , group = argv[1] || process.getgid()
12 | 
13 | if (!isNaN(user)) user = +user
14 | if (!isNaN(group)) group = +group
15 | 
16 | console.error([user, group])
17 | 
18 | try {
19 |   process.setgid(group)
20 |   process.setuid(user)
21 |   console.log(JSON.stringify({uid:+process.getuid(), gid:+process.getgid()}))
22 | } catch (ex) {
23 |   console.log(JSON.stringify({error:ex.message,errno:ex.errno}))
24 | }
25 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "author": "Isaac Z. Schlueter <i@izs.me> (http://blog.izs.me/)",
 3 |   "name": "uid-number",
 4 |   "description": "Convert a username/group name to a uid/gid number",
 5 |   "version": "0.0.6",
 6 |   "repository": {
 7 |     "type": "git",
 8 |     "url": "https://github.com/npm/uid-number.git"
 9 |   },
10 |   "main": "uid-number.js",
11 |   "dependencies": {},
12 |   "devDependencies": {},
13 |   "optionalDependencies": {},
14 |   "engines": {
15 |     "node": "*"
16 |   },
17 |   "license": "ISC"
18 | }
19 | 


--------------------------------------------------------------------------------
/uid-number.js:
--------------------------------------------------------------------------------
 1 | module.exports = uidNumber
 2 | 
 3 | // This module calls into get-uid-gid.js, which sets the
 4 | // uid and gid to the supplied argument, in order to find out their
 5 | // numeric value.  This can't be done in the main node process,
 6 | // because otherwise node would be running as that user from this
 7 | // point on.
 8 | 
 9 | var child_process = require("child_process")
10 |   , path = require("path")
11 |   , uidSupport = process.getuid && process.setuid
12 |   , uidCache = {}
13 |   , gidCache = {}
14 | 
15 | function uidNumber (uid, gid, cb) {
16 |   if (!uidSupport) return cb()
17 |   if (typeof cb !== "function") cb = gid, gid = null
18 |   if (typeof cb !== "function") cb = uid, uid = null
19 |   if (gid == null) gid = process.getgid()
20 |   if (uid == null) uid = process.getuid()
21 |   if (!isNaN(gid)) gid = gidCache[gid] = +gid
22 |   if (!isNaN(uid)) uid = uidCache[uid] = +uid
23 | 
24 |   if (uidCache.hasOwnProperty(uid)) uid = uidCache[uid]
25 |   if (gidCache.hasOwnProperty(gid)) gid = gidCache[gid]
26 | 
27 |   if (typeof gid === "number" && typeof uid === "number") {
28 |     return process.nextTick(cb.bind(null, null, uid, gid))
29 |   }
30 | 
31 |   var getter = require.resolve("./get-uid-gid.js")
32 | 
33 |   child_process.execFile( process.execPath
34 |                         , [getter, uid, gid]
35 |                         , function (code, out, stderr) {
36 |     if (code) {
37 |       var er = new Error("could not get uid/gid\n" + stderr)
38 |       er.code = code
39 |       return cb(er)
40 |     }
41 | 
42 |     try {
43 |       out = JSON.parse(out+"")
44 |     } catch (ex) {
45 |       return cb(ex)
46 |     }
47 | 
48 |     if (out.error) {
49 |       var er = new Error(out.error)
50 |       er.errno = out.errno
51 |       return cb(er)
52 |     }
53 | 
54 |     if (isNaN(out.uid) || isNaN(out.gid)) return cb(new Error(
55 |       "Could not get uid/gid: "+JSON.stringify(out)))
56 | 
57 |     cb(null, uidCache[uid] = +out.uid, gidCache[gid] = +out.gid)
58 |   })
59 | }
60 | 


--------------------------------------------------------------------------------