redmine_openid_impoved_patch

--- a/app/controllers/account_controller.rb
+++ b/app/controllers/account_controller.rb
@@ -178,9 +178,24 @@ class AccountController < ApplicationController
           redirect_to(home_url) && return unless Setting.self_registration?
 
           # Create on the fly
-          user.login = registration['nickname'] unless registration['nickname'].nil?
-          user.mail = registration['email'] unless registration['email'].nil?
-          user.firstname, user.lastname = registration['fullname'].split(' ') unless registration['fullname'].nil?
+         if !registration['nickname'].nil?
+               user.login = registration['nickname'] 
+         else
+               user.login = ActiveSupport::SecureRandom.hex(6)
+         end
+       
+          if !registration['email'].nil?
+               user.mail = registration['email'] 
+         else
+               user.mail = "please_update_your_email_" + user.login + "@domain.com"
+         end
+
+         if !registration['fullname'].nil?
+               user.firstname, user.lastname = registration['fullname'].split(' ') 
+         else
+               user.firstname = user.login
+               user.lastname = "-"
+         end
           user.random_password
           user.status = User::STATUS_REGISTERED