From cf8ddd52c4125e9113bea0459ff0c1a10b9febe8 Mon Sep 17 00:00:00 2001
From: Victor Costa <vfcosta@gmail.com>
Date: Wed, 26 Mar 2014 17:58:21 -0300
Subject: [PATCH] oauth_client: oauth login with google and facebook

---
 plugins/oauth_client/Gemfile                                                     |  3 +++
 plugins/oauth_client/README                                                      | 11 +++++++++++
 plugins/oauth_client/controllers/oauth_client_plugin_admin_controller.rb         | 15 +++++++++++++++
 plugins/oauth_client/controllers/public/oauth_client_plugin_public_controller.rb | 27 +++++++++++++++++++++++++++
 plugins/oauth_client/db/migrate/20140828184930_add_settings_to_users.rb          |  9 +++++++++
 plugins/oauth_client/lib/ext/user.rb                                             | 40 ++++++++++++++++++++++++++++++++++++++++
 plugins/oauth_client/lib/oauth_client_plugin.rb                                  | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 plugins/oauth_client/public/images/facebook-icon.png                             | Bin 0 -> 831 bytes
 plugins/oauth_client/public/images/google-icon.png                               | Bin 0 -> 1615 bytes
 plugins/oauth_client/public/style.css                                            | 22 ++++++++++++++++++++++
 plugins/oauth_client/views/account/_oauth_signup.html.erb                        | 11 +++++++++++
 plugins/oauth_client/views/auth/_facebook.html.erb                               |  1 +
 plugins/oauth_client/views/auth/_google_oauth2.html.erb                          |  1 +
 plugins/oauth_client/views/auth/_oauth_login.html.erb                            | 13 +++++++++++++
 plugins/oauth_client/views/oauth_client_plugin_admin/index.html.erb              | 44 ++++++++++++++++++++++++++++++++++++++++++++
 15 files changed, 267 insertions(+), 0 deletions(-)
 create mode 100644 plugins/oauth_client/Gemfile
 create mode 100644 plugins/oauth_client/README
 create mode 100644 plugins/oauth_client/controllers/oauth_client_plugin_admin_controller.rb
 create mode 100644 plugins/oauth_client/controllers/public/oauth_client_plugin_public_controller.rb
 create mode 100644 plugins/oauth_client/db/migrate/20140828184930_add_settings_to_users.rb
 create mode 100644 plugins/oauth_client/lib/ext/user.rb
 create mode 100644 plugins/oauth_client/lib/oauth_client_plugin.rb
 create mode 100644 plugins/oauth_client/public/images/facebook-icon.png
 create mode 100644 plugins/oauth_client/public/images/google-icon.png
 create mode 100644 plugins/oauth_client/public/style.css
 create mode 100644 plugins/oauth_client/views/account/_oauth_signup.html.erb
 create mode 100644 plugins/oauth_client/views/auth/_facebook.html.erb
 create mode 100644 plugins/oauth_client/views/auth/_google_oauth2.html.erb
 create mode 100644 plugins/oauth_client/views/auth/_oauth_login.html.erb
 create mode 100644 plugins/oauth_client/views/oauth_client_plugin_admin/index.html.erb

diff --git a/plugins/oauth_client/Gemfile b/plugins/oauth_client/Gemfile
new file mode 100644
index 0000000..454aae0
--- /dev/null
+++ b/plugins/oauth_client/Gemfile
@@ -0,0 +1,3 @@
+gem 'omniauth'
+gem 'omniauth-facebook'
+gem "omniauth-google-oauth2"
diff --git a/plugins/oauth_client/README b/plugins/oauth_client/README
new file mode 100644
index 0000000..71cc886
--- /dev/null
+++ b/plugins/oauth_client/README
@@ -0,0 +1,11 @@
+
+
+https://github.com/mkdynamic/omniauth-facebook
+https://github.com/zquestz/omniauth-google-oauth2
+
+Create Google+ application:
+  https://developers.google.com/+/web/signin/javascript-flow
+
+Create Facebook application:
+  https://developers.facebook.com/docs/facebook-login/v2.1
+  https://developers.facebook.com/docs/reference/dialogs/oauth
diff --git a/plugins/oauth_client/controllers/oauth_client_plugin_admin_controller.rb b/plugins/oauth_client/controllers/oauth_client_plugin_admin_controller.rb
new file mode 100644
index 0000000..50bde52
--- /dev/null
+++ b/plugins/oauth_client/controllers/oauth_client_plugin_admin_controller.rb
@@ -0,0 +1,15 @@
+class OauthClientPluginAdminController < AdminController
+
+  def index
+    settings = params[:settings] || {}
+
+    @settings = Noosfero::Plugin::Settings.new(environment, OauthClientPlugin, settings)
+    @providers = @settings.get_setting(:providers) || {}
+    if request.post?
+      @settings.save!
+      session[:notice] = 'Settings succefully saved.'
+      redirect_to :action => 'index'
+    end
+  end
+
+end
diff --git a/plugins/oauth_client/controllers/public/oauth_client_plugin_public_controller.rb b/plugins/oauth_client/controllers/public/oauth_client_plugin_public_controller.rb
new file mode 100644
index 0000000..6c4fe08
--- /dev/null
+++ b/plugins/oauth_client/controllers/public/oauth_client_plugin_public_controller.rb
@@ -0,0 +1,27 @@
+class OauthClientPluginPublicController < PublicController
+
+  def callback
+    auth = request.env["omniauth.auth"]
+    login = auth.info.email.split('@').first
+    user = environment.users.find_with_omniauth(auth)
+
+    if user
+      session[:user] = user
+      redirect_to :controller => :account, :action => :login
+    else
+      name = auth.info.name
+      name ||= auth.extra && auth.extra.raw_info ? auth.extra.raw_info.name : ''
+      redirect_to :controller => :account, :action => :signup, :user => {:login => login, :email => auth.info.email, :oauth_providers => [{:provider => auth.provider, :uid => auth.uid}]}, :profile_data => {:name => name}
+    end
+  end
+
+  def failure
+    redirect_to root_url
+  end
+
+  def destroy
+    session[:user] = nil
+    redirect_to root_url
+  end
+
+end
diff --git a/plugins/oauth_client/db/migrate/20140828184930_add_settings_to_users.rb b/plugins/oauth_client/db/migrate/20140828184930_add_settings_to_users.rb
new file mode 100644
index 0000000..75ffe1f
--- /dev/null
+++ b/plugins/oauth_client/db/migrate/20140828184930_add_settings_to_users.rb
@@ -0,0 +1,9 @@
+class AddSettingsToUsers < ActiveRecord::Migration
+  def self.up
+    add_column :users, :settings, :string
+  end
+
+  def self.down
+    remove_column :users, :settings
+  end
+end
diff --git a/plugins/oauth_client/lib/ext/user.rb b/plugins/oauth_client/lib/ext/user.rb
new file mode 100644
index 0000000..014013b
--- /dev/null
+++ b/plugins/oauth_client/lib/ext/user.rb
@@ -0,0 +1,40 @@
+require_dependency 'user'
+
+class User
+
+  acts_as_having_settings :field => :settings
+
+  settings_items :oauth_providers, :type => Array, :default => []
+
+  def self.find_with_omniauth(auth)
+    user = self.find_by_email(auth.info.email)
+    if user && !user.oauth_providers.empty? #FIXME save new oauth providers
+      user
+    else
+      nil
+    end
+  end
+
+  def password_required_with_oauth?
+    password_required_without_oauth? && oauth_providers.blank?
+  end
+
+  alias_method_chain :password_required?, :oauth
+
+  after_create :activate_oauth_user
+
+  def activate_oauth_user
+    activate unless oauth_providers.empty?
+  end
+
+  def make_activation_code_with_oauth
+    if oauth_providers.blank?
+      nil
+    else
+      make_activation_code_without_oauth
+    end
+  end
+
+  alias_method_chain :make_activation_code, :oauth
+
+end
diff --git a/plugins/oauth_client/lib/oauth_client_plugin.rb b/plugins/oauth_client/lib/oauth_client_plugin.rb
new file mode 100644
index 0000000..88ff240
--- /dev/null
+++ b/plugins/oauth_client/lib/oauth_client_plugin.rb
@@ -0,0 +1,70 @@
+class OauthClientPlugin < Noosfero::Plugin
+
+  def self.plugin_name
+    "Oauth Client Plugin"
+  end
+
+  def self.plugin_description
+    _("Login with Oauth.")
+  end
+
+  def login_extra_contents
+    plugin = self
+    proc do
+      render :partial => 'auth/oauth_login', :locals => {:providers => plugin.enabled_providers}
+    end
+  end
+
+  def signup_extra_contents
+    plugin = self
+
+    proc do
+      unless (plugin.context.params[:user]||{})[:oauth_providers].blank?
+        render :partial => 'oauth_signup'
+      else
+        ''
+      end
+    end
+  end
+
+  def enabled_providers
+    settings = Noosfero::Plugin::Settings.new(context.environment, OauthClientPlugin)
+    providers = settings.get_setting(:providers)
+    providers.select {|provider, options| options[:enabled]}
+  end
+
+  PROVIDERS = {
+    :facebook => {
+      :name => 'Facebook'
+    },
+    :google_oauth2 => {
+      :name => 'Google'
+    }
+  }
+
+  def stylesheet?
+    true
+  end
+
+  Rails.application.config.middleware.use OmniAuth::Builder do
+    PROVIDERS.each do |provider, options|
+      provider provider, :setup => lambda { |env|
+        request = Rack::Request.new env
+        strategy = env['omniauth.strategy']
+
+        domain = Domain.find_by_name(request.host)
+        environment = domain.environment rescue Environment.default
+        settings = Noosfero::Plugin::Settings.new(environment, OauthClientPlugin)
+        providers = settings.get_setting(:providers)
+
+        strategy.options.client_id = providers[provider][:client_id]
+        strategy.options.client_secret = providers[provider][:client_secret]
+      }, :path_prefix => '/plugin/oauth_client', :callback_path => "/plugin/oauth_client/public/callback/#{provider}"
+    end
+
+    unless Rails.env.production?
+      provider :developer, :path_prefix => "/plugin/oauth_client", :callback_path => "/plugin/oauth_client/public/callback/developer"
+    end
+  end
+
+end
diff --git a/plugins/oauth_client/public/images/facebook-icon.png b/plugins/oauth_client/public/images/facebook-icon.png
new file mode 100644
index 0000000..6b48648
Binary files /dev/null and b/plugins/oauth_client/public/images/facebook-icon.png differ
diff --git a/plugins/oauth_client/public/images/google-icon.png b/plugins/oauth_client/public/images/google-icon.png
new file mode 100644
index 0000000..3909e9d
Binary files /dev/null and b/plugins/oauth_client/public/images/google-icon.png differ
diff --git a/plugins/oauth_client/public/style.css b/plugins/oauth_client/public/style.css
new file mode 100644
index 0000000..2f2b17f
--- /dev/null
+++ b/plugins/oauth_client/public/style.css
@@ -0,0 +1,22 @@
+.oauth-login .provider a {
+  min-width: 20px;
+  min-height: 20px;
+  background-size: 20px;
+  display: inline-block;
+  text-decoration: none;
+  background-repeat: no-repeat;
+  padding-left: 22px;
+  line-height: 20px;
+}
+
+.oauth-login .provider .facebook {
+  background-image: url(images/facebook-icon.png);
+}
+
+.oauth-login .provider .google_oauth2 {
+  background-image: url(images/google-icon.png);
+}
+
+.oauth-login .provider .developer {
+  display: none;
+}
diff --git a/plugins/oauth_client/views/account/_oauth_signup.html.erb b/plugins/oauth_client/views/account/_oauth_signup.html.erb
new file mode 100644
index 0000000..561bfe1
--- /dev/null
+++ b/plugins/oauth_client/views/account/_oauth_signup.html.erb
@@ -0,0 +1,11 @@
+<%= hidden_field_tag 'user[oauth_providers][][provider]', @user.oauth_providers.first[:provider] %>
+<%= hidden_field_tag 'user[oauth_providers][][uid]', @user.oauth_providers.first[:uid] %>
+
+<style>
+  #signup-password {
+    display: none;
+  }
+  #signup-password-confirmation {
+    display: none;
+  }
+</style>
diff --git a/plugins/oauth_client/views/auth/_facebook.html.erb b/plugins/oauth_client/views/auth/_facebook.html.erb
new file mode 100644
index 0000000..96a203c
--- /dev/null
+++ b/plugins/oauth_client/views/auth/_facebook.html.erb
@@ -0,0 +1 @@
+<a class="facebook" href="/plugin/oauth_client/facebook"><%= _('Login with Facebook') %></a>
diff --git a/plugins/oauth_client/views/auth/_google_oauth2.html.erb b/plugins/oauth_client/views/auth/_google_oauth2.html.erb
new file mode 100644
index 0000000..5defae3
--- /dev/null
+++ b/plugins/oauth_client/views/auth/_google_oauth2.html.erb
@@ -0,0 +1 @@
+<a class="google_oauth2" href="/plugin/oauth_client/google_oauth2"><%= _('Login with Google') %></a>
diff --git a/plugins/oauth_client/views/auth/_oauth_login.html.erb b/plugins/oauth_client/views/auth/_oauth_login.html.erb
new file mode 100644
index 0000000..bf33a02
--- /dev/null
+++ b/plugins/oauth_client/views/auth/_oauth_login.html.erb
@@ -0,0 +1,13 @@
+<div class="oauth-login">
+  <% providers.each do |provider, options| %>
+    <span class="provider">
+      <%= render :partial => "auth/#{provider}", :locals => {:app_id => options['client_id'] } %>
+    </span>
+  <% end %>
+
+  <span class="provider">
+    <% unless Rails.env.production? %>
+      <%= link_to _('Developer Login'), "/plugin/oauth/developer", :class => 'developer' %>
+    <% end %>
+  </span>
+</div>
diff --git a/plugins/oauth_client/views/oauth_client_plugin_admin/index.html.erb b/plugins/oauth_client/views/oauth_client_plugin_admin/index.html.erb
new file mode 100644
index 0000000..9be9852
--- /dev/null
+++ b/plugins/oauth_client/views/oauth_client_plugin_admin/index.html.erb
@@ -0,0 +1,44 @@
+<h1><%= _('Oauth Client Settings') %></h1>
+
+<%= form_for(:settings) do |f| %>
+  <div class="providers">
+    <h3><%= _('Providers') %></h3>
+  <%= f.fields_for :providers, OpenStruct.new(@providers) do |p| %>
+
+    <% OauthClientPlugin::PROVIDERS.each do |available_provider, options| %>
+      <% provider = OpenStruct.new(@providers[available_provider]) %>
+
+      <%= p.fields_for available_provider, provider do |o| %>
+        <div class="provider">
+          <div class="name">
+            <h4><%= o.check_box :enabled, {:class => 'enable', :checked => provider.enabled=='true'}, true, false %>
+            <%= options[:name] %></h4>
+          </div>
+          <div class="options" style="<%= provider.enabled=='true' ? '':'display:none' %>">
+            <div class="client-id">
+              <span class="label"><%= _('Client ID') %></span>
+              <span class="value"><%= o.text_field :client_id %></span>
+            </div>
+            <div class="client-secret">
+              <span class="label"><%= _('Client Secret') %></span>
+              <span class="value"><%= o.text_field :client_secret %></span>
+            </div>
+          </div>
+        </div>
+      <% end %>
+    <% end %>
+  <% end %>
+
+  <% button_bar do %>
+    <%= submit_button(:save, _('Save'), :cancel => {:controller => 'plugins', :action => 'index'}) %>
+  <% end %>
+  </div>
+<% end %>
+
+<script>
+  jQuery(document).ready(function($) {
+    $('.providers .provider .enable').on('click', function() {
+      $(this).parents('.provider').find('.options').toggle('fast');
+    });
+  });
+</script>
--
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