service

# File lib/webrick/httpservlet/filehandler.rb, line 149
      def service(req, res)
        # if this class is mounted on "/" and /~username is requested.
        # we're going to override path informations before invoking service.
        if defined?(Etc) && @options[:UserDir] && req.script_name.empty?
          if %^(/~([^/]+))| =~ req.path_info
            script_name, user = $1, $2
            path_info = $'
            begin
              passwd = Etc::getpwnam(user)
              @root = File::join(passwd.dir, @options[:UserDir])
              req.script_name = script_name
              req.path_info = path_info
            rescue
              @logger.debug "#{self.class}#do_GET: getpwnam(#{user}) failed"
            end
          end
        end
        prevent_directory_traversal(req, res)
        super(req, res)
      end