Adds persona support to the discourse platform using the omniauth-persona gem ( https://github.com/pklingem/omniauth-persona )

persona.diff

diff --git a/Gemfile b/Gemfile
index 6966c65..59e7dc3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -34,6 +34,7 @@ gem "omniauth-openid"
 gem "openid-redis-store"
 gem "omniauth-facebook"
 gem "omniauth-twitter"
+gem "omniauth-persona"
 gem 'oj'
 gem 'pbkdf2'
 gem 'pg'
diff --git a/Gemfile.lock b/Gemfile.lock
index 96d5cc4..22b96c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -287,6 +287,10 @@ GEM
     omniauth-openid (1.0.1)
       omniauth (~> 1.0)
       rack-openid (~> 1.3.1)
+    omniauth-persona (0.0.1)
+      faraday
+      multi_json
+      omniauth (~> 1.0)
     omniauth-twitter (0.0.14)
       multi_json (~> 1.3)
       omniauth-oauth (~> 1.0)
@@ -488,6 +492,7 @@ DEPENDENCIES
   omniauth
   omniauth-facebook
   omniauth-openid
+  omniauth-persona
   omniauth-twitter
   openid-redis-store
   pbkdf2
diff --git a/app/assets/javascripts/discourse/templates/modal/login.js.handlebars b/app/assets/javascripts/discourse/templates/modal/login.js.handlebars
index b605373..bf93e89 100644
--- a/app/assets/javascripts/discourse/templates/modal/login.js.handlebars
+++ b/app/assets/javascripts/discourse/templates/modal/login.js.handlebars
@@ -5,6 +5,7 @@
     <br>
     <button class="btn btn-social twitter" title="{{i18n login.twitter.title}}" {{action "twitterLogin" target="view"}}>{{i18n login.twitter.title}}</button>
     <button class="btn btn-social yahoo" title="{{i18n login.yahoo.title}}" {{action openidLogin "yahoo" target="view"}}>{{i18n login.yahoo.title}}</button>
+    <button class="btn btn-social persona" title="{{i18n login.persona.title}}" {{action "personaLogin" target="view"}}>{{i18n login.persona.title}}</button>
   </div>
   <h3 style="text-align:center; margin-bottom:10px;">
     {{i18n login.or}}
diff --git a/app/assets/javascripts/discourse/views/modal/login_view.js b/app/assets/javascripts/discourse/views/modal/login_view.js
index 73383db..2cad633 100644
--- a/app/assets/javascripts/discourse/views/modal/login_view.js
+++ b/app/assets/javascripts/discourse/views/modal/login_view.js
@@ -79,6 +79,14 @@
       return window.open("/auth/facebook", "_blank", "menubar=no,status=no,height=400,width=800,left=" + left + ",top=" + top);
     },
 
+    personaLogin: function() {
+      var left, top;
+      this.set('authenticate', 'persona');
+      left = this.get('lastX') - 400;
+      top = this.get('lastY') - 200;
+      return window.open("/auth/persona", "_blank", "menubar=no,status=no,height=300,width=400,left=" + left + ",top=" + top);
+    },
+
     openidLogin: function(provider) {
       var left, top;
       left = this.get('lastX') - 400;
diff --git a/app/assets/stylesheets/components/buttons.css.scss b/app/assets/stylesheets/components/buttons.css.scss
index 80e8756..0d54219 100755
--- a/app/assets/stylesheets/components/buttons.css.scss
+++ b/app/assets/stylesheets/components/buttons.css.scss
@@ -162,6 +162,12 @@
       content: "Y";
     }
   }
+  &.persona {
+    background: $persona;
+    &:before {
+      content: "P";
+    }
+  }
 }
 
 // Button Sizes
diff --git a/app/assets/stylesheets/foundation/variables.scss b/app/assets/stylesheets/foundation/variables.scss
index 39eea57..e773569 100644
--- a/app/assets/stylesheets/foundation/variables.scss
+++ b/app/assets/stylesheets/foundation/variables.scss
@@ -123,6 +123,7 @@ $google: #5b76f7 !default;
 $facebook: #3b5998 !default;
 $twitter: #00bced !default;
 $yahoo: #810293 !default;
+$persona: #297dc3 !default;
 
 // Layout dimensions
 
diff --git a/app/controllers/users/omniauth_callbacks_controller.rb b/app/controllers/users/omniauth_callbacks_controller.rb
index a719a14..2e96a50 100644
--- a/app/controllers/users/omniauth_callbacks_controller.rb
+++ b/app/controllers/users/omniauth_callbacks_controller.rb
@@ -19,6 +19,8 @@ class Users::OmniauthCallbacksController < ApplicationController
       create_or_sign_on_user_using_twitter(auth_token)
     when "google", "yahoo"
       create_or_sign_on_user_using_openid(auth_token)
+    when "persona"
+      create_or_sign_on_user_using_persona(auth_token)
     end
   end
 
@@ -169,4 +171,42 @@ class Users::OmniauthCallbacksController < ApplicationController
     end
   end
 
+  def create_or_sign_on_user_using_persona(auth_token)
+
+    data = auth_token[:info]
+
+    email = data[:email]
+    expires = auth_token[:expires] # we don't save this but it should probably be used
+
+    # If the auth supplies a name / username, use those. Otherwise start with email.
+    name = data[:name] || email
+    username = email
+
+    user = User.find_by_email(email)
+
+    if user
+
+      # If we have to approve users
+      if SiteSetting.must_approve_users? and !user.approved?
+        @data = {awaiting_approval: true}
+      else
+        log_on_user(user)
+        @data = {authenticated: true}
+      end
+
+    else
+      @data = {
+        email: email,
+        name: User.suggest_name(name),
+        username: User.suggest_username(username),
+        email_valid: true ,
+        auth_provider: data[:provider] || params[:provider]
+      }
+      session[:authentication] = {
+        email: @data[:email],
+        email_valid: @data[:email_valid]
+      }
+    end
+  end
+
 end
diff --git a/config/initializers/omniauth.rb b/config/initializers/omniauth.rb
index 41e4c8d..57bb35b 100644
--- a/config/initializers/omniauth.rb
+++ b/config/initializers/omniauth.rb
@@ -27,4 +27,5 @@ Rails.application.config.middleware.use OmniAuth::Builder do
            SiteSetting.twitter_consumer_key,
            SiteSetting.twitter_consumer_secret
 
+  provider :persona
 end
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 811a7b6..50a3b13 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -245,6 +245,9 @@ en:
       yahoo:
         title: "Log In with Yahoo"
         message: "Authenticating with Yahoo (make sure pop up blockers are not enabled)"
+      persona:
+        title: "Log In with Persona"
+        message: "Authenticating with Persona (make sure pop up blockers are not enabled)"
 
     composer:
       saving_draft_tip: "saving"