#  Phusion Passenger - http://www.modrails.com/
#  Copyright (C) 2008  Phusion
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; version 2 of the License.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License along
#  with this program; if not, write to the Free Software Foundation, Inc.,
#  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
require 'passenger/passenger'
module Passenger
module Rails
 
# A request handler for Ruby on Rails applications.
class RequestHandler < AbstractRequestHandler
  # String constants which exist to relieve Ruby's garbage collector.
  
  
  NINJA_PATCHING_LOCK = Mutex.new
  @@ninja_patched_action_controller = false
  
  def initialize(owner_pipe)
    super(owner_pipe)
    NINJA_PATCHING_LOCK.synchronize do
      ninja_patch_action_controller
    end
  end
 
protected
  # Overrided method.
  def process_request(headers, input, output)
    cgi = CGIFixed.new(headers, input, output)
    ::Dispatcher.dispatch(cgi,
      ::ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS,
      cgi.stdoutput)
  end
  
private
  def ninja_patch_action_controller
    if !@@ninja_patched_action_controller && defined?(::ActionController::Base) \
    && ::ActionController::Base.private_method_defined?(:perform_action)
      @@ninja_patched_action_controller = true
      ::ActionController::Base.class_eval do
        alias passenger_orig_perform_action perform_action
        
        def perform_action(*whatever)
          headers[X_POWERED_BY] = PASSENGER_HEADER
          passenger_orig_perform_action(*whatever)
        end
      end
    end
  end
end
 
end # module Rails
end # module Passenger