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I’ve published my Active Directory authentication (AuthN) and authorization (AuthZ) module for node.js. This module supports large active directory installation where over 1000 entries may be returned from a query via range specifiers. In addition, the module will recursively enumerate and expand all nested users and groups.

You can view or checkout the code online on my github account:

Installation is easy with npm:

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npm install activedirectory

Usage is pretty simple:

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var ad = new ActiveDirectory('ldap://yourdomain.com', 'dc=yourdomain,dc=com', 'authuser@domain.com', 'authpassword');
var username = 'bob@domain.com';
ad.findUser(username, function(err, user) {
  if (err) {
    console.log('ERROR: ' +JSON.stringify(err));
    return;
  }
 
  if (! user) console.log('User: ' + username + ' not found.');
  else console.log(JSON.stringify(user));
});

Hope you find it useful!