Enableing SAML auth co-exist with other OAuth services (#215)

* Enableing SAML auth co-exist with other OAuth services
* removing cert file

Gemfile

@@ -17,7 +17,7 @@ gem 'uglifier', '>= 1.3.0'
 # Use CoffeeScript for .coffee assets and views
 gem 'coffee-rails', '~> 4.2'
 # See https://github.com/rails/execjs#readme for more supported runtimes
-# gem 'therubyracer', platforms: :ruby
+gem 'therubyracer', platforms: :ruby
 
 # Use jquery as the JavaScript library
 gem 'jquery-rails'

Gemfile.lock

@@ -100,6 +100,7 @@ GEM
     json (1.8.6)
     json (1.8.6-java)
     jwt (1.5.6)
+    libv8 (3.16.14.19-x86_64-linux)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -214,6 +215,7 @@ GEM
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
+    ref (2.0.0)
     request_store (1.4.0)
       rack (>= 1.4)
     ruby-saml (1.4.3)
@@ -252,6 +254,9 @@ GEM
     sqlite3 (1.3.13-x64-mingw32)
     sqlite3 (1.3.13-x86-mingw32)
     sqlite3 (1.3.13-x86-mswin32-60)
+    therubyracer (0.12.3)
+      libv8 (~> 3.16.14.15)
+      ref
     thor (0.20.0)
     thread_safe (0.3.6)
     thread_safe (0.3.6-java)
@@ -320,6 +325,7 @@ DEPENDENCIES
   spring
   spring-watcher-listen (~> 2.0.0)
   sqlite3
+  therubyracer
   turbolinks (~> 5)
   tzinfo-data
   uglifier (>= 1.3.0)

app/controllers/sessions_controller.rb

@@ -23,10 +23,6 @@ class SessionsController < ApplicationController
     if Rails.application.config.omniauth_ldap
       redirect_to "#{relative_root}/auth/ldap"
     end
-    #If SAML is enabled, just route to it instead.
-    if Rails.application.config.omniauth_saml
-      redirect_to "#{relative_root}/auth/saml"
-    end
   end
 
   def create

app/views/sessions/new.erb

@@ -49,6 +49,18 @@
                 </div>
               <% end %>
           <% end %>
+          <% if omniauth_providers_configured(:saml) %>
+            <%= link_to omniauth_login_url(:saml), class: "signin-link signin-link-google" do %>
+              <div class="signin-button center-block">
+                <div class="signin-icon-wrapper">
+                  <%= image_tag("cas-normal.png", alt: "Login with SAML", class: "signin-icon") %>
+                </div>
+                <div class="signin-text-wrapper text-center">
+                  <span class="signin-text"><%= t('signin_text', provider: 'SAML') %></span>
+                </div>
+              </div>
+            <% end %>
+          <% end %>
         </div>
       <% end %>
     </div>