Simple google apps auth.

Gemfile

@@ -8,6 +8,7 @@ gem 'rails'
 gem 'haml-rails'
 gem 'jquery-rails'
 gem 'twitter-bootstrap-rails'
+gem 'omniauth-openid'
 
 gem 'elo'
 

Gemfile.lock

@@ -47,6 +47,7 @@ GEM
       activesupport (~> 3.0)
       haml (~> 3.0)
       railties (~> 3.0)
+    hashie (1.2.0)
     heroku (2.24.1)
       launchy (>= 0.3.2)
       netrc (~> 0.7.1)
@@ -76,6 +77,12 @@ GEM
     mime-types (1.18)
     multi_json (1.2.0)
     netrc (0.7.1)
+    omniauth (1.1.0)
+      hashie (~> 1.2)
+      rack
+    omniauth-openid (1.0.1)
+      omniauth (~> 1.0)
+      rack-openid (~> 1.3.1)
     pg (0.13.2)
     polyglot (0.3.3)
     pry (0.9.8.4)
@@ -95,6 +102,9 @@ GEM
     rack (1.4.1)
     rack-cache (1.2)
       rack (>= 0.4)
+    rack-openid (1.3.1)
+      rack (>= 1.1.0)
+      ruby-openid (>= 2.1.8)
     rack-ssl (1.3.2)
       rack
     rack-test (0.6.1)
@@ -132,6 +142,7 @@ GEM
       activesupport (>= 3.0)
       railties (>= 3.0)
       rspec (~> 2.9.0)
+    ruby-openid (2.1.8)
     rubyzip (0.9.7)
     sass (3.1.15)
     sass-rails (3.2.5)
@@ -174,6 +185,7 @@ DEPENDENCIES
   haml-rails
   heroku
   jquery-rails
+  omniauth-openid
   pg
   pry
   pry-doc

app/controllers/session_controller.rb

@@ -0,0 +1,13 @@
+class SessionController < ApplicationController
+
+  def create
+    email = request.env['omniauth.auth'].info.to_hash['email']
+    if email =~ /@(the)?edgecase.com\Z/
+      flash.notice = "Authorized as #{email}"
+    else
+      flash.alert = "#{email} not authorized!"
+    end
+    redirect_to request.env['omniauth.origin'] || root_path
+  end
+
+end

config/initializers/omniauth.rb

@@ -0,0 +1,3 @@
+Rails.application.config.middleware.use OmniAuth::Builder do
+  provider :openid, :name => 'google', :identifier => 'https://www.google.com/accounts/o8/id'
+end

config/routes.rb

@@ -1,9 +1,11 @@
 Pong::Application.routes.draw do
-
+
+  match '/auth/google/callback' => 'session#create'
+
   resources :matches
   resources :players
-  
+
   match '/distribution' => 'players#distribution', :as => 'distribution'
-  
+
   root to: 'players#rankings'
 end