node-oauth2-server

Complete, compliant and well tested module for implementing an OAuth2 Server/Provider with express in node.js

Node OAuth2 Server

Complete, compliant and well tested module for implementing an OAuth2 Server/Provider with express in node.js

npm install node-oauth2-server

The module provides two middlewares, one for authorization and routing, another for error handling, use them as you would any other middleware:

var express = require('express'),
    bodyParser = require('body-parser'),
    oauthserver = require('node-oauth2-server');
 
var app = express();
 
app.use(bodyParser()); // REQUIRED 
 
app.oauth = oauthserver({
  model: {}, // See below for specification 
  grants: ['password'],
  debug: true
});
 
app.all('/oauth/token', app.oauth.grant());
 
app.get('/', app.oauth.authorise(), function (reqres) {
  res.send('Secret area');
});
 
app.use(app.oauth.errorHandler());
 
app.listen(3000);

After running with node, visting http://127.0.0.1:3000 should present you with a json response saying your access token could not be found.

Note: As no model was actually implemented here, delving any deeper, i.e. passing an access token, will just cause a server error. See below for the specification of what's required from the model.

  • Supports authorization_code, password, refresh_token, client_credentials and extension (custom) grant types
  • Implicitly supports any form of storage e.g. PostgreSQL, MySQL, Mongo, Redis...
  • Full test suite
  • string model
  • Model object (see below)
  • array grants
  • grant types you wish to support, currently the module supports password and refresh_token
  • Default: []
  • function|boolean debug
  • If true errors will be logged to console. You may also pass a custom function, in which case that function will be called with the error as it's first argument
  • Default: false
  • number accessTokenLifetime
  • Life of access tokens in seconds
  • If null, tokens will considered to never expire
  • Default: 3600
  • number refreshTokenLifetime
  • Life of refresh tokens in seconds
  • If null, tokens will considered to never expire
  • Default: 1209600
  • number authCodeLifetime
  • Life of auth codes in seconds
  • Default: 30
  • regexp clientIdRegex
  • Regex to match auth codes against before checking model
  • Default: /^[a-z0-9-_]{3,40}$/i
  • boolean passthroughErrors
  • If true, non grant errors will not be handled internally (so you can ensure a consistent format with the rest of your api)
  • boolean continueAfterResponse
  • If true, next will be called even if a response has been sent (you probably don't want this)

The module requires a model object through which some aspects or storage, retrieval and custom validation are abstracted. The last parameter of all methods is a callback of which the first parameter is always used to indicate an error.

Note: see https://github.com/thomseddon/node-oauth2-server/tree/master/examples/postgresql for a full model example using postgres.

  • string bearerToken
  • The bearer token (access token) that has been provided
  • function callback (error, accessToken)
  • mixed error
    • Truthy to indicate an error
  • object accessToken
    • The access token retrieved form storage or falsey to indicate invalid access token
    • Must contain the following keys:
      • date expires
        • The date when it expires
        • null to indicate the token never expires
      • string|number userId
        • The user id (saved in req.user.id)
  • string clientId
  • string|null clientSecret
  • If null, omit from search query (only search by clientId)
  • function callback (error, client)
  • mixed error
    • Truthy to indicate an error
  • object client
    • The client retrieved from storage or falsey to indicate an invalid client
    • Saved in req.client
    • Must contain the following keys:
      • string clientId
  • string clientId
  • string grantType
  • function callback (error, allowed)
  • mixed error
    • Truthy to indicate an error
  • boolean allowed
    • Indicates whether the grantType is allowed for this clientId
  • string accessToken
  • string clientId
  • date expires
  • object user
  • function callback (error)
  • mixed error
    • Truthy to indicate an error
  • string authCode
  • function callback (error, authCode)
  • mixed error
    • Truthy to indicate an error
  • object authCode
    • The authorization code retrieved form storage or falsey to indicate invalid code
    • Must contain the following keys:
      • string|number clientId
        • client id associated with this auth code
      • date expires
        • The date when it expires
      • string|number userId
        • The userId
  • string authCode
  • string clientId
  • date expires
  • mixed user
    • Whatever was passed as user to the codeGrant function (see example)
  • function callback (error)
  • mixed error
    • Truthy to indicate an error
  • string username
  • string password
  • function callback (error, user)
  • mixed error
    • Truthy to indicate an error
  • object user
    • The user retrieved from storage or falsey to indicate an invalid user
    • Saved in req.user
    • Must contain the following keys:
      • string|number id
  • string refreshToken
  • string clientId
  • date expires
  • object user
  • function callback (error)
  • mixed error
    • Truthy to indicate an error
  • string refreshToken
  • The bearer token (access token) that has been provided
  • function callback (error, accessToken)
  • mixed error
    • Truthy to indicate an error
  • object refreshToken
    • The refresh token retrieved form storage or falsey to indicate invalid refresh token
    • Must contain the following keys:
      • string|number clientId
        • client id associated with this token
      • date expires
        • The date when it expires
        • null to indicate the token never expires
      • string|number userId
        • The userId

The spec does not actually require that you revoke the old token - hence this is optional (Last paragraph: http://tools.ietf.org/html/rfc6749#section-6)

  • string refreshToken
  • function callback (error)
  • mixed error
    • Truthy to indicate an error

Required for extension grant grant type

  • object req
  • The raw request
  • function callback (error, supported, user)
  • mixed error
    • Truthy to indicate an error
  • boolean supported
    • Whether you support the grant type
  • object user
    • The user retrieved from storage or falsey to indicate an invalid user
    • Saved in req.user
    • Must contain the following keys:
      • string|number id
  • string type
  • accessToken or refreshToken
  • function callback (error, token)
  • mixed error
    • Truthy to indicate an error
  • string|object|null token
    • string indicates success
    • null indicates to revert to the default token generator
    • object indicates a reissue (i.e. will not be passed to saveAccessToken/saveRefreshToken)
      • Must contain the following keys (if object):
        • string accessToken OR refreshToken dependant on type

You can support extension/custom grants by implementing the extendedGrant method as outlined above. Any requests that begin with http(s):// (as defined in the spec) will be passed to it for you to handle. You can access the grant type via req.oauth.grantType and you should pass back supported as false if you do not support it to ensure a consistent (and compliant) response.

First you must insert client id/secret and user into storage. This is out of the scope of this example.

To obtain a token you should POST to /oauth/token. You should include your client credentials in the Authorization header ("Basic " + client_id:client_secret base64'd), and then grant_type ("password"), username and password in the request body, for example:

POST /oauth/token HTTP/1.1
Host: server.example.com
Authorization: Basic czZCaGRSa3F0MzpnWDFmQmF0M2JW
Content-Type: application/x-www-form-urlencoded
 
grant_type=password&username=johndoe&password=A3ddj3w

This will then call the following on your model (in this order):

  • getClient (clientId, clientSecret, callback)
  • grantTypeAllowed (clientId, grantType, callback)
  • getUser (username, password, callback)
  • saveAccessToken (accessToken, clientId, expires, user, callback)
  • saveRefreshToken (refreshToken, clientId, expires, user, callback) (if using)

Provided there weren't any errors, this will return the following (excluding the refresh_token if you've not enabled the refresh_token grant type):

HTTP/1.1 200 OK
Content-Type: application/json;charset=UTF-8
Cache-Control: no-store
Pragma: no-cache
 
{
  "access_token":"2YotnFZFEjr1zCsicMWpAA",
  "token_type":"bearer",
  "expires_in":3600,
  "refresh_token":"tGzv3JOkF0XG5Qx2TlKWIA"
}

See: https://github.com/thomseddon/node-oauth2-server/blob/master/Changelog.md

Copyright (c) 2013 Thom Seddon

Apache, Version 2.0