Windows Azure Active Directory Authentication Library (ADAL) for Node.js

The ADAL for node.js library makes it easy for node.js applications to authenticate to AAD in order to access AAD protected web resources. It supports 3 authentication modes shown in the quickstart code below.

Versions

Current version - 0.1.28
Minimum recommended version - 0.1.22
You can find the changes for each version in the change log.

Samples and Documentation

We provide a full suite of sample applications and documentation on GitHub to help you get started with learning the Azure Identity system. This includes tutorials for native clients such as Windows, Windows Phone, iOS, OSX, Android, and Linux. We also provide full walkthroughs for authentication flows such as OAuth2, OpenID Connect, Graph API, and other awesome features.

Community Help and Support

We leverage Stack Overflow to work with the community on supporting Azure Active Directory and its SDKs, including this one! We highly recommend you ask your questions on Stack Overflow (we're all on there!) Also browser existing issues to see if someone has had your question before.

We recommend you use the "adal" tag so we can see it! Here is the latest Q&A on Stack Overflow for ADAL: https://stackoverflow.com/questions/tagged/adal

Security Reporting

If you find a security issue with our libraries or services please report it to secure@microsoft.com with as much detail as possible. Your submission may be eligible for a bounty through the Microsoft Bounty program. Please do not post security issues to GitHub Issues or any other public site. We will contact you shortly upon receiving the information. We encourage you to get notifications of when security incidents occur by visiting this page and subscribing to Security Advisory Alerts.

Contributing

All code is licensed under the Apache 2.0 license and we triage actively on GitHub. We enthusiastically welcome contributions and feedback. You can clone the repo and start contributing now.

Quick Start

Installation

$ npm install adal-node

Configure the logging

Personal Identifiable Information (PII) & Organizational Identifiable Information (OII)

By default, ADAL logging does not capture or log any PII or OII. The library allows app developers to turn this on by configuring the loggingWithPII flag in the logging options. By turning on PII or OII, the app takes responsibility for safely handling highly-sensitive data and complying with any regulatory requirements.

var logging = require('adal-node').Logging;

//PII or OII logging disabled. Default Logger does not capture any PII or OII.
logging.setLoggingOptions({
  log: function(level, message, error) {
    // provide your own implementation of the log function
  },
  level: logging.LOGGING_LEVEL.VERBOSE, // provide the logging level
  loggingWithPII: false  // Determine if you want to log personal identitification information. The default value is false.
});

//PII or OII logging enabled.
logging.setLoggingOptions({
  log: function(level, message, error) {
    // provide your own implementation of the log function
  },
  level: logging.LOGGING_LEVEL.VERBOSE,
  loggingWithPII: true
});

Authorization Code

See the website sample for a complete bare bones express based web site that makes use of the code below.

var AuthenticationContext = require('adal-node').AuthenticationContext;

var clientId = 'yourClientIdHere';
var clientSecret = 'yourAADIssuedClientSecretHere'
var authorityHostUrl = 'https://login.windows.net';
var tenant = 'myTenant';
var authorityUrl = authorityHostUrl + '/' + tenant;
var redirectUri = 'https://localhost:3000/getAToken';
var resource = '00000002-0000-0000-c000-000000000000';
var templateAuthzUrl = 'https://login.windows.net/' + 
                        tenant + 
                        '/oauth2/authorize?response_type=code&client_id=' +
                        clientId + 
                        '&redirect_uri=' + 
                        redirectUri + 
                        '&state=&resource=' + 
                        resource;

function createAuthorizationUrl(state) {
  return templateAuthzUrl.replace('', state);
}

// Clients get redirected here in order to create an OAuth authorize url and redirect them to AAD.
// There they will authenticate and give their consent to allow this app access to
// some resource they own.
app.get('/auth', function(req, res) {
  crypto.randomBytes(48, function(ex, buf) {
    var token = buf.toString('base64').replace(/\//g,'_').replace(/\+/g,'-');

    res.cookie('authstate', token);
    var authorizationUrl = createAuthorizationUrl(token);

    res.redirect(authorizationUrl);
  });
});

// After consent is granted AAD redirects here.  The ADAL library is invoked via the
// AuthenticationContext and retrieves an access token that can be used to access the
// user owned resource.
app.get('/getAToken', function(req, res) {
  if (req.cookies.authstate !== req.query.state) {
    res.send('error: state does not match');
  }

  var authenticationContext = new AuthenticationContext(authorityUrl);

  authenticationContext.acquireTokenWithAuthorizationCode(
    req.query.code,
    redirectUri,
    resource,
    clientId, 
    clientSecret,
    function(err, response) {
      var errorMessage = '';
      if (err) {
        errorMessage = 'error: ' + err.message + '\n';
      }
      errorMessage += 'response: ' + JSON.stringify(response);
      res.send(errorMessage);
    }
  );
});

Server to Server via Client Credentials

See the client credentials sample.

var AuthenticationContext = require('adal-node').AuthenticationContext;

var authorityHostUrl = 'https://login.windows.net';
var tenant = 'myTenant.onmicrosoft.com'; // AAD Tenant name.
var authorityUrl = authorityHostUrl + '/' + tenant;
var applicationId = 'yourApplicationIdHere'; // Application Id of app registered under AAD.
var clientSecret = 'yourAADIssuedClientSecretHere'; // Secret generated for app. Read this environment variable.
var resource = '00000002-0000-0000-c000-000000000000'; // URI that identifies the resource for which the token is valid.

var context = new AuthenticationContext(authorityUrl);

context.acquireTokenWithClientCredentials(resource, applicationId, clientSecret, function(err, tokenResponse) {
  if (err) {
    console.log('well that didn\'t work: ' + err.stack);
  } else {
    console.log(tokenResponse);
  }
});

License

Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");

We Value and Adhere to the Microsoft Open Source Code of Conduct

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.