Kerberos for Node.js

krb5 is a Node.js native binding for kerberos. It is a node.js implementation of kerberos client tools, such as :

• kinit (keytab, or password)
• kdestroy It uses the MIT Kerberos native library. It is also able to generate a SPNEGO token. SPNEGO is a GSS mechanism to authenticate through HTML requests. Please see the first example in the samples directory for a concrete use case.

Installation

The installation assumes that you have mit-kerberos installed on your computer. On Linux, you shall be all set. On Windows or Mac OS, please read the corresponding section below. Once mit-kerberos is installed, run

npm install

Windows

To compile this library in windows, you need a complete visual studio compile chain, please refer to this webpage. If you have a 32 bit OS, please delete binding.gyp and rename _binding32.gyp before install.

Mac OS X

If you encounter troubles with your kerberos version, please compile kerberos using the following instructions.

Your include path must contain: krb5.h

• gssapi.h
• gssapi/gssapi_krb5.h

Your library path must contain:

• krb5 library
• gssapi_krb5 library

Here's some instructions on how to install the Kerberos and GSS libraries. You can download the latest version of the MIT Kerberos Distribution. Unless you specify the "--prefix" option to configure, the library will be installed inside "/usr/local".

wget http://web.mit.edu/kerberos/dist/krb5/1.15/krb5-1.15-beta1.tar.gz 
tar -xzf krb5-1.15-beta1.tar.gz 
cd krb5-1.15-beta1/src
./configure
make
sudo make install

If kerberos is not installed in a directory not included in include and/or library path (if you have manually compiled kerberos in a specific directory for example), please modify the binding.gyp present in the package root folder with the following properties:

{
  'targets': [{
    'target_name': 'krb5',
    'include_dirs': ['/path/to/kerberos/include/dir/','/path/to/kerberos_gssapi/include/dir/'],
    'libraries': ['/path/to/libkrb5', '/path/to/libgssapi_krb5']
  }]
}

Usage

API

k = krb5
  principal
  password: 'mypass' # If keytab not set
  keytab: '/etc/security/keytabs/me.keytab' # If password not set, default keytab if not defined
  service_principal: 'HTTP@domain.com'
  renew: true
k.kinit options, (err) ->
k.kdestroy (err) ->
k.token (err, token) ->
  console.log token

Spnego

krb5 = require 'krb5'
krb5.spnego
  principal: 'me@MY.REALM'
  password: 'mypass' # If keytab not set
  keytab: '/etc/security/keytabs/me.keytab'  # If password not set, default keytab if not defined
  service_principal: 'HTTP@domain.com'
, (err, token) ->
  console.log token

for more example, see the samples directory.