simple-cas-client

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simple-cas-client

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A basic simple NodeJS Client for communicating with Central Authentication Service (CAS) servers.

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simple-cas-client
=================

A basic simple NodeJS Client for communicating with Central Authentication Service (CAS) servers (protocol 1 and 2).

Goal
----

This package is targeted towards [OMBMax](https://max.omb.gov); a Government CAS server for government employees maintained by the Office of Managment and Budget.

Example
-------

This is intended to be used be the in the login page of your node application.

/// load the library
        var SimpleCASClient = require('simple-cas-client').SimpleCASClient;

/// create the new client
        var cas = new SimpleCASClient();
        cas.configure({
            session_space: 'cas',
            client: {
                protocol: 'http',
                host:     '127.0.0.1',
                port:     3000
            },
            server: {
                protocol: 'https',
                host:    'some.cas.server.com',
                port:    '443',
                context: '/cas'
            }
        });

/// if we are already authenticated
        /// cas info should already be in our session 
        cas.on('success',function(){
            /// user has passed authentication at some point
            res.redirect('/validatedUser');
        });

/// do something with the incoming identity
        cas.on('validation',function(){
            /// cas response now lives in the session
            var casData = req.session[cas.config.session_space];
            somehowFindLocalUserFor( casData.user, function( localUser ){
                localUser.somehowStoreCasInfo( casData.attributes );
            });
        });

/// handle failed validation 
        cas.on('failure',function(err){
            logger.error('validation failure: '+err);
            res.redirect('/unauthorized');
        });

/// handle error
        cas.on('error',function(err){
            logger.error('validation error: '+err);
            res.redirect('/tryagain');
        });

/// trigger the authentication check and redirect process
        cas.forceAuthentication(req,res);

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