From 7fb3d9aaf5e9617269245876a4172b4919873a16 Mon Sep 17 00:00:00 2001
From: isaacs <i@izs.me>
Date: Tue, 13 Mar 2012 09:48:42 -0700
Subject: [PATCH] Abstract out 'uid-number' to a separate dependency

---
 lib/npm.js                                    |  2 +-
 lib/utils/mkdir-p.js                          |  2 +-
 lib/utils/tar.js                              |  2 +-
 lib/utils/uid-number.js                       | 55 -------------------
 node_modules/uid-number/README.md             | 17 ++++++
 .../uid-number/get-uid-gid.js                 |  8 +++
 node_modules/uid-number/package.json          | 34 ++++++++++++
 node_modules/uid-number/uid-number.js         | 54 ++++++++++++++++++
 package.json                                  |  3 +-
 9 files changed, 118 insertions(+), 59 deletions(-)
 delete mode 100644 lib/utils/uid-number.js
 create mode 100644 node_modules/uid-number/README.md
 rename bin/npm-get-uid-gid.js => node_modules/uid-number/get-uid-gid.js (65%)
 create mode 100644 node_modules/uid-number/package.json
 create mode 100644 node_modules/uid-number/uid-number.js

diff --git a/lib/npm.js b/lib/npm.js
index afce0f9f275..3e4addf64d2 100644
--- a/lib/npm.js
+++ b/lib/npm.js
@@ -25,7 +25,7 @@ var EventEmitter = require("events").EventEmitter
   , which = require("which")
   , semver = require("semver")
   , findPrefix = require("./utils/find-prefix.js")
-  , getUid = require("./utils/uid-number.js")
+  , getUid = require("uid-number")
   , mkdir = require("./utils/mkdir-p.js")
   , slide = require("slide")
   , chain = slide.chain
diff --git a/lib/utils/mkdir-p.js b/lib/utils/mkdir-p.js
index cc2b465fb62..2d9b9ee9fb9 100644
--- a/lib/utils/mkdir-p.js
+++ b/lib/utils/mkdir-p.js
@@ -4,7 +4,7 @@ var log = require("./log.js")
   , path = require("path")
   , npm = require("../npm.js")
   , exec = require("./exec.js")
-  , uidNumber = require("./uid-number.js")
+  , uidNumber = require("uid-number")
   , umask = process.umask()
   , umaskOrig = umask
   , addedUmaskExit = false
diff --git a/lib/utils/tar.js b/lib/utils/tar.js
index 27313f7d809..3db1f16a69e 100644
--- a/lib/utils/tar.js
+++ b/lib/utils/tar.js
@@ -5,7 +5,7 @@ var npm = require("../npm.js")
   , fs = require("graceful-fs")
   , path = require("path")
   , log = require("./log.js")
-  , uidNumber = require("./uid-number.js")
+  , uidNumber = require("uid-number")
   , rm = require("rimraf")
   , readJson = require("./read-json.js")
   , relativize = require("./relativize.js")
diff --git a/lib/utils/uid-number.js b/lib/utils/uid-number.js
deleted file mode 100644
index 3756275534f..00000000000
--- a/lib/utils/uid-number.js
+++ /dev/null
@@ -1,55 +0,0 @@
-module.exports = uidNumber
-
-// This module calls into bin/npm-get-uid-gid.js, which sets the
-// uid and gid to the supplied argument, in order to find out their
-// numeric value.  This can't be done in the main node process,
-// because otherwise npm would be running as that user.
-
-var exec = require("./exec.js")
-  , path = require("path")
-  , log = require("./log.js")
-  , constants = require("constants")
-  , npm = require("../npm.js")
-  , uidSupport = process.getuid && process.setuid
-  , uidCache = {}
-  , gidCache = {}
-
-function uidNumber (uid, gid, cb) {
-  if (!uidSupport || npm.config.get("unsafe-perm")) return cb()
-  if (typeof cb !== "function") cb = gid, gid = null
-  if (typeof cb !== "function") cb = uid, uid = null
-  if (gid == null) gid = process.getgid()
-  if (uid == null) uid = process.getuid()
-  if (!isNaN(gid)) gid = +gid
-  if (!isNaN(uid)) uid = +uid
-
-  if (uidCache[uid]) uid = uidCache[uid]
-  if (gidCache[gid]) gid = gidCache[gid]
-
-  if (typeof gid === "number" && typeof uid === "number") {
-    return cb(null, uid, gid)
-  }
-
-  var getter = path.join(__dirname, "..", "..", "bin", "npm-get-uid-gid.js")
-  return exec( process.execPath, [getter, uid, gid], process.env, false
-             , null, process.getuid(), process.getgid()
-             , function (er, code, out, err) {
-    if (er) return log.er(cb, "Could not get uid/gid "+err)(er)
-    log.silly(out, "output from getuid/gid")
-    out = JSON.parse(out+"")
-    if (out.error) {
-      if (!npm.config.get("unsafe-perm")) {
-        var er = new Error(out.error)
-        er.errno = out.errno
-        return cb(er)
-      } else {
-        return cb(null, +process.getuid(), +process.getgid())
-      }
-    }
-    if (isNaN(out.uid) || isNaN(out.gid)) return cb(new Error(
-      "Could not get uid/gid: "+JSON.stringify(out)))
-    uidCache[uid] = out.uid
-    uidCache[gid] = out.gid
-    cb(null, out.uid, out.gid)
-  })
-}
diff --git a/node_modules/uid-number/README.md b/node_modules/uid-number/README.md
new file mode 100644
index 00000000000..81166753aba
--- /dev/null
+++ b/node_modules/uid-number/README.md
@@ -0,0 +1,17 @@
+Use this module to convert a username/groupname to a uid/gid number.
+
+Usage:
+
+```
+npm install uid-number
+```
+
+Then, in your node program:
+
+```javascript
+var uidNumber = require("uid-number")
+uidNumber("isaacs", function (er, uid, gid) {
+  // gid is null because we didn't ask for a group name
+  // uid === 24561 because that's my number.
+})
+```
diff --git a/bin/npm-get-uid-gid.js b/node_modules/uid-number/get-uid-gid.js
similarity index 65%
rename from bin/npm-get-uid-gid.js
rename to node_modules/uid-number/get-uid-gid.js
index 390e0f2fc9a..0b391748a93 100755
--- a/bin/npm-get-uid-gid.js
+++ b/node_modules/uid-number/get-uid-gid.js
@@ -1,3 +1,11 @@
+if (module !== require.main) {
+  throw new Error("This file should not be loaded with require()")
+}
+
+if (!process.getuid || !process.getgid) {
+  throw new Error("this file should not be called without uid/gid support")
+}
+
 var argv = process.argv.slice(2)
   , user = argv[0] || process.getuid()
   , group = argv[1] || process.getgid()
diff --git a/node_modules/uid-number/package.json b/node_modules/uid-number/package.json
new file mode 100644
index 00000000000..3c0592cb618
--- /dev/null
+++ b/node_modules/uid-number/package.json
@@ -0,0 +1,34 @@
+{
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "name": "uid-number",
+  "description": "Convert a username/group name to a uid/gid number",
+  "version": "0.0.3",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/isaacs/uid-number.git"
+  },
+  "main": "uid-number.js",
+  "dependencies": {},
+  "devDependencies": {},
+  "optionalDependencies": {},
+  "engines": {
+    "node": "*"
+  },
+  "_npmUser": {
+    "name": "isaacs",
+    "email": "i@izs.me"
+  },
+  "_id": "uid-number@0.0.3",
+  "_engineSupported": true,
+  "_npmVersion": "1.1.12",
+  "_nodeVersion": "v0.7.7-pre",
+  "_defaultsLoaded": true,
+  "dist": {
+    "shasum": "be40aeab1db6ba45d2344d4ed6015109fc9d98d4"
+  },
+  "_from": "uid-number@0.0.3"
+}
diff --git a/node_modules/uid-number/uid-number.js b/node_modules/uid-number/uid-number.js
new file mode 100644
index 00000000000..93f372bb94f
--- /dev/null
+++ b/node_modules/uid-number/uid-number.js
@@ -0,0 +1,54 @@
+module.exports = uidNumber
+
+// This module calls into get-uid-gid.js, which sets the
+// uid and gid to the supplied argument, in order to find out their
+// numeric value.  This can't be done in the main node process,
+// because otherwise node would be running as that user from this
+// point on.
+
+var child_process = require("child_process")
+  , path = require("path")
+  , uidSupport = process.getuid && process.setuid
+  , uidCache = {}
+  , gidCache = {}
+
+function uidNumber (uid, gid, cb) {
+  if (!uidSupport) return cb()
+  if (typeof cb !== "function") cb = gid, gid = null
+  if (typeof cb !== "function") cb = uid, uid = null
+  if (gid == null) gid = process.getgid()
+  if (uid == null) uid = process.getuid()
+  if (!isNaN(gid)) gid = uidCache[gid] = +gid
+  if (!isNaN(uid)) uid = uidCache[uid] = +uid
+
+  if (uidCache.hasOwnProperty(uid)) uid = uidCache[uid]
+  if (gidCache.hasOwnProperty(gid)) gid = gidCache[gid]
+
+  if (typeof gid === "number" && typeof uid === "number") {
+    return process.nextTick(cb.bind(null, null, uid, gid))
+  }
+
+  var getter = require.resolve("./get-uid-gid.js")
+
+  child_process.execFile( process.execPath
+                        , [getter, uid, gid]
+                        , function (code, out, err) {
+    if (er) return cb(new Error("could not get uid/gid\n" + err))
+    try {
+      out = JSON.parse(out+"")
+    } catch (ex) {
+      return cb(ex)
+    }
+
+    if (out.error) {
+      var er = new Error(out.error)
+      er.errno = out.errno
+      return cb(er)
+    }
+
+    if (isNaN(out.uid) || isNaN(out.gid)) return cb(new Error(
+      "Could not get uid/gid: "+JSON.stringify(out)))
+
+    cb(null, uidCache[uid] = +out.uid, uidCache[gid] = +out.gid)
+  })
+}
diff --git a/package.json b/package.json
index 14e9a50e077..57432e49817 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,8 @@
     "read": "0",
     "lru-cache": "1",
     "node-gyp": "~0.3.7",
-    "fstream-npm": "0.0"
+    "fstream-npm": "0.0",
+    "uid-number": "0.0"
   },
   "bundleDependencies": [
     "slide",