Server side SASL support for node.js
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Bindings to GSASL for node.js. Made to implement XMPP, but can be used anywhere.

At the moment the only plan is to support basic server side auth with callbacks

Since I do not currently require any other parts of the SASL API, they will not be implemented. You are welcome to add them though, please notify me when you do, so that I can pull.


  1. Create a new SASL session using

    var sasl = require('sasljs'); var session = sasl.createServerSession("", callback );

callback is a callback function which should accept the property name and session object and set properties as requested.

  1. Start the session with a mechanism. The list of supported mechanisms is available as session.mechanisms.


  2. Step through the authentication procedure by calling step() with input from the client.


step() returns an object with two members:

    status: Integer status code,
    data: Error or reply

If status is sasl.GSASL_OK, authentication succeeded. For sasl.GSASL_NEEDS_MORE send the data back to the client. For others, compare against available error codes and decide what to do. Usually abort.

  1. Use callback

    function callback(property, session) { // since realm is not currently set above if( property == sasl.GSASL_REALM ) { session.setProperty("realm", "MyHomePage"); return sasl.GSASL_OK; }

     if( property == sasl.GSASL_PASSWORD ) {
         // get password for user, using property()
         var pass = getPassword('authid'));
         session.setProperty('password', pass);
         return sasl.GSASL_OK;


You have to return GSASL_OK if you handled the callback! As you can see, setProperty() accepts string keys. For a list of keys, see lib/ towards the end.

Nikhil Marathe