add cas support with a few tests

Gemfile

@@ -45,6 +45,7 @@ gem 'omniauth-facebook'
 gem 'omniauth-twitter'
 gem 'omniauth-github'
 gem 'omniauth-browserid', git: 'https://github.com/callahad/omniauth-browserid.git', branch: 'observer_api'
+gem 'omniauth-cas'
 gem 'oj'
 gem 'pg'
 # we had pain with the 3.2.13 upgrade so monkey patch the security fix

app/assets/javascripts/discourse/templates/modal/login.js.handlebars

@@ -7,6 +7,9 @@
       {{#if Discourse.SiteSettings.enable_facebook_logins}}
         <button class="btn btn-social facebook" title="{{i18n login.facebook.title}}" {{action "facebookLogin" target="view"}}>{{i18n login.facebook.title}}</button>
       {{/if}}
+      {{#if Discourse.SiteSettings.enable_cas_logins}}
+        <button class="btn btn-social cas" title="{{i18n login.cas.title}}" {{action "casLogin" target="view"}}>{{i18n login.cas.title}}</button>
+      {{/if}}
       {{#if Discourse.SiteSettings.enable_twitter_logins}}
         <button class="btn btn-social twitter" title="{{i18n login.twitter.title}}" {{action "twitterLogin" target="view"}}>{{i18n login.twitter.title}}</button>
       {{/if}}

app/assets/javascripts/discourse/views/modal/login_view.js

@@ -31,6 +31,7 @@ Discourse.LoginView = Discourse.ModalBodyView.extend({
   hasAtLeastOneLoginButton: function() {
     return Discourse.SiteSettings.enable_google_logins ||
            Discourse.SiteSettings.enable_facebook_logins ||
+           Discourse.SiteSettings.enable_cas_logins ||
            Discourse.SiteSettings.enable_twitter_logins ||
            Discourse.SiteSettings.enable_yahoo_logins ||
            Discourse.SiteSettings.enable_github_logins ||
@@ -102,6 +103,14 @@ Discourse.LoginView = Discourse.ModalBodyView.extend({
     return window.open(Discourse.getURL("/auth/facebook"), "_blank", "menubar=no,status=no,height=400,width=800,left=" + left + ",top=" + top);
   },
 
+  casLogin: function() {
+    var left, top;
+    this.set('authenticate', 'cas');
+    left = this.get('lastX') - 400;
+    top = this.get('lastY') - 200;
+    return window.open("/auth/cas", "_blank", "menubar=no,status=no,height=400,width=800,left=" + left + ",top=" + top);
+   },
+
   openidLogin: function(provider) {
     var left = this.get('lastX') - 400;
     var top = this.get('lastY') - 200;

app/assets/stylesheets/components/buttons.css.scss

@@ -156,6 +156,9 @@
       content: "f";
     }
   }
+  &.cas {
+    background: $cas;
+  }
   &.twitter {
     background: $twitter;
     &:before {

app/assets/stylesheets/foundation/variables.scss

@@ -121,6 +121,7 @@ $black: #000 !default;
 $white: #fff !default;
 $google: #5b76f7 !default;
 $facebook: #3b5998 !default;
+$cas: #70BA61 !default;
 $twitter: #00bced !default;
 $yahoo: #810293 !default;
 $github: #6d6d6d !default;

app/controllers/users/omniauth_callbacks_controller.rb

@@ -7,7 +7,7 @@ class Users::OmniauthCallbacksController < ApplicationController
   layout false
 
   def self.types
-    @types ||= Enum.new(:facebook, :twitter, :google, :yahoo, :github, :persona)
+    @types ||= Enum.new(:facebook, :twitter, :google, :yahoo, :github, :persona, :cas)
   end
 
   # need to be able to call this
@@ -142,6 +142,58 @@ class Users::OmniauthCallbacksController < ApplicationController
 
   end
 
+  def create_or_sign_on_user_using_cas(auth_token)
+    logger.error "authtoken #{auth_token}"
+    email = "#{auth_token[:extra][:user]}@evergreen.edu"
+    username = auth_token[:extra][:user]
+    name = auth_token["uid"]
+    cas_user_id = auth_token["uid"]
+
+    session[:authentication] = {
+        cas: {
+            cas_user_id: cas_user_id ,
+            username: username
+        },
+        email: email,
+        email_valid: true
+    }
+
+    user_info = CasUserInfo.where(:cas_user_id => cas_user_id ).first
+
+    @data = {
+        username: username,
+        name: name,
+        email: email,
+        auth_provider: "CAS",
+        email_valid: true
+    }
+
+    if user_info
+      user = user_info.user
+      if user
+        unless user.active
+          user.active = true
+          user.save
+        end
+        log_on_user(user)
+        @data[:authenticated] = true
+      end
+    else
+      user = User.where(email: email).first
+      if user
+        CasUserInfo.create!(session[:authentication][:cas].merge(user_id: user.id))
+        unless user.active
+          user.active = true
+          user.save
+        end
+        log_on_user(user)
+        @data[:authenticated] = true
+      end
+    end
+
+  end
+
+
   def create_or_sign_on_user_using_openid(auth_token)
 
     data = auth_token[:info]

app/models/cas_user_info.rb

@@ -0,0 +1,5 @@
+class CasUserInfo < ActiveRecord::Base
+  attr_accessible :email, :cas_user_id, :first_name, :gender, :last_name, :name, :user_id, :username, :link
+  belongs_to :user
+
+end

app/models/site_setting.rb

@@ -140,6 +140,11 @@ class SiteSetting < ActiveRecord::Base
   setting(:facebook_app_id, '')
   setting(:facebook_app_secret, '')
 
+  client_setting(:enable_cas_logins, false)
+  setting(:cas_url, '')
+  setting(:cas_hostname, '')
+  setting(:cas_domainname, '')
+
   client_setting(:enable_github_logins, false)
   setting(:github_client_id, '')
   setting(:github_client_secret, '')

app/models/user.rb

@@ -27,6 +27,7 @@ class User < ActiveRecord::Base
 
   has_one :twitter_user_info, dependent: :destroy
   has_one :github_user_info, dependent: :destroy
+  has_one :cas_user_info, dependent: :destroy
   belongs_to :approved_by, class_name: 'User'
 
   has_many :group_users

config/initializers/omniauth.rb

@@ -45,4 +45,7 @@ Rails.application.config.middleware.use OmniAuth::Builder do
   provider :browser_id,
            :name => 'persona'
 
+  provider :cas,
+           :host => SiteSetting.cas_hostname
+
 end

config/locales/client.en.yml

@@ -316,6 +316,9 @@ en:
       facebook:
         title: "with Facebook"
         message: "Authenticating with Facebook (make sure pop up blockers are not enabled)"
+      cas:
+        title: "Log In with CAS"
+        message: "Authenticating with CAS (make sure pop up blockers are not enabled)"
       yahoo:
         title: "with Yahoo"
         message: "Authenticating with Yahoo (make sure pop up blockers are not enabled)"

config/locales/server.en.yml

@@ -376,6 +376,7 @@ en:
     queue_size_warning: 'The number of queued jobs is %{queue_size}, which is high. This could indicate a problem with the Sidekiq process(es), or you may need to add more Sidekiq workers.'
     memory_warning: 'Your server is running with less than 1 GB of total memory. At least 1 GB of memory is recommended.'
     facebook_config_warning: 'The server is configured to allow signup and log in with Facebook (enable_facebook_logins), but the app id and app secret values are not set. Go to <a href="/admin/site_settings">the Site Settings</a> and update the settings. <a href="https://github.com/discourse/discourse/wiki/The-Discourse-Admin-Quick-Start-Guide#enable-facebook-logins" target="_blank">See this guide to learn more</a>.'
+    cas_config_warning: 'The server is configured to allow signup and log in with CAS (enable_facebook_logins), but the hostname and domain name values are not set.'
     twitter_config_warning: 'The server is configured to allow signup and log in with Twitter (enable_twitter_logins), but the key and secret values are not set. Go to <a href="/admin/site_settings">the Site Settings</a> and update the settings. <a href="https://github.com/discourse/discourse/wiki/The-Discourse-Admin-Quick-Start-Guide#enable-twitter-logins" target="_blank">See this guide to learn more</a>.'
     github_config_warning: 'The server is configured to allow signup and log in with GitHub (enable_github_logins), but the client id and secret values are not set. Go to <a href="/admin/site_settings">the Site Settings</a> and update the settings. <a href="https://github.com/discourse/discourse/wiki/The-Discourse-Admin-Quick-Start-Guide" target="_blank">See this guide to learn more</a>.'
     failing_emails_warning: 'There are %{num_failed_jobs} email jobs that failed. Check your config/environments/production.rb file and ensure that the config.action_mailer settings are correct. <a href="/sidekiq/retries" target="_blank">See the failed jobs in Sidekiq</a>.'
@@ -503,6 +504,11 @@ en:
     facebook_app_id: "App id for Facebook authentication, registered at https://developers.facebook.com/apps"
     facebook_app_secret: "App secret for Facebook authentication, registered at https://developers.facebook.com/apps"
 
+    enable_cas_logins: "Enable CAS authentication"
+    cas_url: "Url for cas server"
+    cas_hostname: "Hostname for cas server"
+    cas_domainname: "Domain name generated email addresses for cas server"
+
     enable_github_logins: "Enable Github authentication, requires github_client_id and github_client_secret"
     github_client_id: "Client id for Github authentication, registered at https://github.com/settings/applications"
     github_client_secret: "Client secret for Github authentication, registered at https://github.com/settings/applications"

db/migrate/20130521210140_create_cas_user_infos.rb

@@ -0,0 +1,19 @@
+class CreateCasUserInfos < ActiveRecord::Migration
+  def change
+    create_table :cas_user_infos do |t|
+      t.integer :user_id, null: false
+      t.string :cas_user_id, null: false
+      t.string :username, null: false
+      t.string :first_name
+      t.string :last_name
+      t.string :email
+      t.string :gender
+      t.string :name
+      t.string :link
+
+      t.timestamps
+    end
+    add_index :cas_user_infos, :user_id, unique: true
+    add_index :cas_user_infos, :cas_user_id, unique: true
+  end
+end

spec/controllers/omniauth_callbacks_controller_spec.rb

@@ -3,7 +3,7 @@ require 'spec_helper'
 describe Users::OmniauthCallbacksController do
 
   let(:auth) { {info: {email: 'eviltrout@made.up.email', name: 'Robin Ward', uid: 123456789}, "extra" => {"raw_info" => {} } } }
-
+  let(:cas_auth) {{ uid: "caluser2", extra: {user: "caluser2"}  }  }
   describe 'invalid provider' do
 
     it "fails" do
@@ -54,6 +54,26 @@ describe Users::OmniauthCallbacksController do
 
   end
 
+  describe 'cas' do
+
+    before do
+      request.env["omniauth.auth"] = cas_auth
+    end
+
+    it "fails when cas logins are disabled" do
+      SiteSetting.stubs(:enable_cas_logins?).returns(false)
+      get :complete, provider: 'cas'
+      response.should_not be_success
+    end
+
+    it "succeeds when cas logins are enabled" do
+      SiteSetting.stubs(:enable_cas_logins?).returns(true)
+      get :complete, provider: 'cas'
+      response.should be_success
+    end
+
+  end
+
 
   describe 'open id handler' do
 

spec/views/omniauth_callbacks/complete.html.erb_spec.rb

@@ -13,6 +13,18 @@ describe "users/omniauth_callbacks/complete.html.erb" do
     rendered_data["awaiting_activation"].should eq(true)
   end
 
+  it "renders cas data " do
+    assign(:data, {username: "username", :auth_provider=> "CAS", :awaiting_activation=>true})
+
+    render
+
+    rendered_data = JSON.parse(rendered.match(/window.opener.Discourse.authenticationComplete\((.*)\)/)[1])
+
+    rendered_data["username"].should eq("username")
+    rendered_data["auth_provider"].should eq("CAS")
+    rendered_data["awaiting_activation"].should eq(true)
+  end
+
   it "renders twitter data " do
     assign(:data, {username: "username", :auth_provider=>"Twitter", :awaiting_activation=>true})