# File lib/omniauth/strategies/cas.rb, line 29 def callback_phase ticket = request.params['ticket'] return fail!(:no_ticket, 'No CAS Ticket') unless ticket validator = ServiceTicketValidator.new(@configuration, callback_url, ticket) @user_info = validator.user_info return fail!(:invalid_ticket, 'Invalid CAS Ticket') if @user_info.nil? || @user_info.empty? super end