GRN-80: Allow local accounts on multitenant (#428)

* Changed the way the omniauth providers are declared

* Allow local authentication for multitenant mode based on customer settings

* Cleanead up code mandated by rubocop

* Completed implementation for signin and added the one for signup

* Fixed issue with rubocop

* Renamed customer_name to lb_user

* Renamed lb_user -> user_domain, fixed issue with signup controller, email verification WAS NOT implemented

* Completed implementation of email_verification

* Fixed rubocop issue

* Final update

* Fix for test with loadbalancer

* Make sure loadbalancer mockup is only used when env defined

* Fix for test on rooms_controller

* Fixed most of the test failing on multitenant env

* Fixed issue detected by rubocop

* Fixed issue with activation tockens not working on resend

* Fixed new issue found by rubocop

* Updated travis script

* Harcoded credentials for mockup

* Updated expectation on start_session

* Fixed issue with duplication of home room

* Updated script for rubocop

* Restored Gemfile

app/helpers/application_helper.rb

@@ -16,8 +16,11 @@
 # You should have received a copy of the GNU Lesser General Public License along
 # with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 
+require 'bbb_api'
+
 module ApplicationHelper
   include MeetingsHelper
+  include BbbApi
 
   # Gets all configured omniauth providers.
   def configured_providers
@@ -71,4 +74,14 @@ module ApplicationHelper
 
     markdown.render(text).html_safe
   end
+
+  def allow_greenlight_accounts?
+    return true unless Rails.configuration.loadbalanced_configuration
+    return false unless Rails.configuration.allow_user_signup
+    # No need to retrieve the provider info if the provider is whitelisted
+    return true if launcher_allow_user_signup_whitelisted?(@user_domain)
+    # Proceed with retrieving the provider info
+    provider_info = retrieve_provider_info(@user_domain, 'api2', 'getUserGreenlightCredentials')
+    provider_info['provider'] == 'greenlight'
+  end
 end

app/helpers/sessions_helper.rb

@@ -31,7 +31,7 @@ module SessionsHelper
 
   # If email verification is disabled, or the user has verified, go to their room
   def check_email_verified(user)
-    if !Rails.configuration.enable_email_verification || user.email_verified
+    if user.activated?
       redirect_to user.main_room
     else
       redirect_to resend_path
@@ -48,24 +48,24 @@ module SessionsHelper
     @current_user ||= User.find_by(id: session[:user_id])
   end
 
-  def generate_checksum(customer_name, redirect_url, secret)
-    string = customer_name + redirect_url + secret
+  def generate_checksum(user_domain, redirect_url, secret)
+    string = user_domain + redirect_url + secret
     OpenSSL::Digest.digest('sha1', string).unpack("H*").first
   end
 
-  def parse_customer_name(hostname)
-    provider = hostname.split('.')
-    provider.first == 'www' ? provider.second : provider.first
+  def parse_user_domain(hostname)
+    hostname.split('.').first
   end
 
   def omniauth_options(env)
     gl_redirect_url = (Rails.env.production? ? "https" : env["rack.url_scheme"]) + "://" + env["SERVER_NAME"] + ":" +
         env["SERVER_PORT"]
-    env['omniauth.strategy'].options[:customer] = parse_customer_name env["SERVER_NAME"]
+    user_domain = parse_user_domain(env["SERVER_NAME"])
+    env['omniauth.strategy'].options[:customer] = user_domain
     env['omniauth.strategy'].options[:gl_redirect_url] = gl_redirect_url
     env['omniauth.strategy'].options[:default_callback_url] = Rails.configuration.gl_callback_url
-    env['omniauth.strategy'].options[:checksum] = generate_checksum parse_customer_name(env["SERVER_NAME"]),
-      gl_redirect_url, Rails.configuration.launcher_secret
+    env['omniauth.strategy'].options[:checksum] = generate_checksum(user_domain, gl_redirect_url,
+      Rails.configuration.launcher_secret)
   end
 
   def google_omniauth_hd(env, hd)