1  #
   2  # httpservlet.rb -- HTTPServlet Module
   3  #
   4  # Author: IPR -- Internet Programming with Ruby -- writers
   5  # Copyright (c) 2000 TAKAHASHI Masayoshi, GOTOU Yuuzou
   6  # Copyright (c) 2002 Internet Programming with Ruby writers. All rights
   7  # reserved.
   8  #
   9  # $IPR: abstract.rb,v 1.24 2003/07/11 11:16:46 gotoyuzo Exp $
  10 
  11  require 'thread'
  12 
  13  require 'webrick/htmlutils'
  14  require 'webrick/httputils'
  15  require 'webrick/httpstatus'
  16 
  17  module WEBrick
  18    module HTTPServlet
  19      class HTTPServletError < StandardError; end
  20 
  21      class AbstractServlet
  22        def self.get_instance(config, *options)
  23          self.new(config, *options)
  24        end
  25 
  26        def initialize(server, *options)
  27          @server = @config = server
  28          @logger = @server[:Logger]
  29          @options = options
  30        end
  31 
  32        def service(req, res)
  33          method_name = "do_" + req.request_method.gsub(/-/, "_")
  34          if respond_to?(method_name)
  35            __send__(method_name, req, res)
  36          else
  37            raise HTTPStatus::MethodNotAllowed,
  38                  "unsupported method `#{req.request_method}'."
  39          end
  40        end
  41 
  42        def do_GET(req, res)
  43          raise HTTPStatus::NotFound, "not found."
  44        end
  45 
  46        def do_HEAD(req, res)
  47          do_GET(req, res)
  48        end
  49 
  50        def do_OPTIONS(req, res)
  51          m = self.methods.grep(/^do_[A-Z]+$/)
  52          m.collect!{|i| i.sub(/do_/, "") }
  53          m.sort!
  54          res["allow"] = m.join(",")
  55        end
  56 
  57        private
  58 
  59        def redirect_to_directory_uri(req, res)
  60          if req.path[-1] != ?/
  61            location = WEBrick::HTTPUtils.escape_path(req.path + "/")
  62            if req.query_string && req.query_string.size > 0
  63              location << "?" << req.query_string
  64            end
  65            res.set_redirect(HTTPStatus::MovedPermanently, location)
  66          end
  67        end
  68      end
  69 
  70    end
  71  end