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oa-globocom.gemspec

README.md

Globo.com OmniAuth

The goal of this gem is to create a bridge between Globo.com's authentication and your app through OmniAuth.

Installation

Add into your Gemfile

gem "oa-globocom"

Configuration

The middleware has 2 important options: :service_id and :config_file. :service_id is the number of your service at Globo.com. :config_file is the YAML formatted file with the urls you want to use:

cadun:
  logout_url: https://login.dev.globoi.com/Servlet/do/logout
  login_url: https://login.dev.globoi.com/login
  auth_url: isp-authenticator.dev.globoi.com:8280

The config_file must be in that format, otherwise it won't work. The final result will look like this:

config.middleware.use OmniAuth::Strategies::GloboCom, :service_id => 1234, :config_file => "#{File.dirname(__FILE__)}/cadun.yml"

After that, you just need to follow the OmniAuth standard configuration creating a callback controller to handle the CadUn's redirect. Something like this:

class SessionsController < ActionController::Base
  def new
    redirect_to logged_in? ? dashboard_url : '/auth/globocom'
  end

  def create
    if auth = request.env['omniauth.auth']
      user = begin
        User.find(auth['uid'])
      rescue ActiveRecord::RecordNotFound
        User.create_from_omniauth(auth)
      end

      session[:user_id] = user.id
      redirect_to root_url
    else
      redirect_to '/auth/cadun'
    end
  end

  def destroy
    session.delete(:user_id)
    cookies.delete("GLBID")
    redirect_to root_url
  end
end

That way the controller will check if OmniAuth has returned the Globo.com's data, if so it will find or create an user, if not it will redirect the user back to the CadUn authentication screen.

And set your routes:

match "/auth/cadun" => "sessions#new"
match "/auth/cadun/callback" => "sessions#create"
match "/auth/cadun/logout" => "sessions#destroy"

Tips: Dynamic Service Ids

Let's say your application works with many service ids. You can work with a "SETUP" step.

Add to the configuration:

config.middleware.use OmniAuth::Strategies::GloboCom, :service_id => 1234, :setup => true, :config => "cadun.yml"

Then add to your callback controller:

class SessionsController < ActionController::Base
  def setup
    request.env['omniauth.strategy'].options[:service_id] = object.service_id
    render :nothing => true, :status => 404
  end
end

It's really important to finish the action with a 404 status. It says to OmniAuth that it can go ahead and complete the flow.

The setup step can change the options of the Strategy, so you can change the service id and the redirect will go to any service you set up.