casauth/casauth.js

Authenticator for PHP Jasig CAS ~3.5

//Setting certificate check to null
process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = '0';

//Getting dependencies

var request = require('request').defaults({
		//Enabling Cookies
        jar: true
    });

var cheerio = require('cheerio');

var querystring = require('querystring');

function auth(casaddress, uname, pswd, callback){

	request(

		{
			uri: casaddress.toString(),
			headers: 
				{ 'content-type': 'application/x-www-form-urlencoded' }
		},

		function (err, res, body) {
			
			if(err) {
				return callback(err);
			}

			var $ = cheerio.load(body);
			var inputs = $('input');

			if(inputs[4]){
				//if not logged in
				var credentials = {
					username: uname.toString(),
					password: pswd.toString(),
					execution: inputs[4].attribs.value.toString() ,
					_eventId: "submit",
					submit: "LOGIN",
					lt: inputs[3].attribs.value.toString()
				};

				request.post(
					{
						uri: casaddress,
						headers:
							{ 'content-type': 'application/x-www-form-urlencoded' },
						body: querystring.stringify(credentials)
					},

					function (err, res) {

						if(err) {
							return callback(err);
						}

                        if(!res.headers['set-cookie']){
                            return callback({message: 'Wrong login or password !'});
                        }

						return callback(err);

					}
				)

			} else {
				//already logged in
				return callback(null);

			}
		}
	);
}

exports = module.exports = auth;