Sails.js: Retrieving URL parameter after redirect

Question

I'm trying to implement CAS into my login system, but I'm stuck on how to retrieve the "ticket". Basically, the ticket is returned in the URL as a parameter but I can't figure out how to parse it out.

Here is my attempted code:

login: function(req, res) {
  if (req.session.authenticated) {
    res.redirect('/dashboard');
  } else {
    var https = require('https');
    var url = require('url');

    var cas_url = 'https://auth-test.test.edu';
    var login_service = '/cas/login';
    var validation_service = '/cas/validate';
    var service = 'https://localhost:1337';

    res.redirect(cas_url + login_service + '?service=' + service);
    console.log(req.headers);
  }
}

After redirecting to my specified URL, the CAS server redirects back to (with sample ticket): https://localhost:1337/?ticket=ST-10247-Qn0BuiSHob1dxcjODDku-cas-t1

Any ideas on how to optimize my code or retrieve the ticket somehow? Thanks!

EDIT: For validation now, see comment below on selected answer:

index: function(req, res) {
  var ticket = req.param('ticket');

  if (req.session.authenticated) {
    res.redirect('/dashboard');
  } else if (ticket) {
    var https = require('https');
    var options = {
      cas_url: 'https://auth-test.berkeley.edu',
      login: '/cas/login',
      validate: '/cas/validate',
      service: 'http://localhost:1337'
    };
    // redirect to validate URL
    res.redirect(options.cas_url + options.validate 
      + '?service=' + options.service + '&ticket=' + ticket);
  } else {
    res.view({
      title: 'Home'
    });
  }
}

If the validation passes through the body will have two lines: yes username

If the validation does not pass through, the HTML will only display one line: no

How to I parse each line of the displayed HTML page?

Answer 1

You need to create an index route , point it to a controller action, and retrieve the token in that action. For example, in /config/routes.js , add:

'/': 'HomeController.index'

then in /api/controllers/HomeController :

index: function (req, res) {

   // req.param will contain any route params, body params or
   // query string params
   var ticket = req.param('ticket');

   return res.send("The ticket is: " + ticket);

}

https://localhost:1337/ will then point at that code, assuming you have SSL set up correctly on your server!