vendor/rails/actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/fastcgi.rb

   1 require 'fcgi'
   2 require 'socket'
   3 require 'rack/content_length'
   4
   5 module Rack
   6   module Handler
   7     class FastCGI
   8       def self.run(app, options={})
   9         file = options[:File] and STDIN.reopen(UNIXServer.new(file))
  10         port = options[:Port] and STDIN.reopen(TCPServer.new(port))
  11         FCGI.each { |request|
  12           serve request, app
  13         }
  14       end
  15
  16       module ProperStream       # :nodoc:
  17         def each                # This is missing by default.
  18           while line = gets
  19             yield line
  20           end
  21         end
  22
  23         def read(*args)
  24           if args.empty?
  25             super || ""           # Empty string on EOF.
  26           else
  27             super
  28           end
  29         end
  30       end
  31
  32       def self.serve(request, app)
  33         app = Rack::ContentLength.new(app)
  34
  35         env = request.env
  36         env.delete "HTTP_CONTENT_LENGTH"
  37
  38         request.in.extend ProperStream
  39
  40         env["SCRIPT_NAME"] = ""  if env["SCRIPT_NAME"] == "/"
  41
  42         env.update({"rack.version" => [0,1],
  43                      "rack.input" => request.in,
  44                      "rack.errors" => request.err,
  45
  46                      "rack.multithread" => false,
  47                      "rack.multiprocess" => true,
  48                      "rack.run_once" => false,
  49
  50                      "rack.url_scheme" => ["yes", "on", "1"].include?(env["HTTPS"]) ? "https" : "http"
  51                    })
  52
  53         env["QUERY_STRING"] ||= ""
  54         env["HTTP_VERSION"] ||= env["SERVER_PROTOCOL"]
  55         env["REQUEST_PATH"] ||= "/"
  56         env.delete "PATH_INFO"  if env["PATH_INFO"] == ""
  57         env.delete "CONTENT_TYPE"  if env["CONTENT_TYPE"] == ""
  58         env.delete "CONTENT_LENGTH"  if env["CONTENT_LENGTH"] == ""
  59
  60         status, headers, body = app.call(env)
  61         begin
  62           send_headers request.out, status, headers
  63           send_body request.out, body
  64         ensure
  65           body.close  if body.respond_to? :close
  66           request.finish
  67         end
  68       end
  69
  70       def self.send_headers(out, status, headers)
  71         out.print "Status: #{status}\r\n"
  72         headers.each { |k, vs|
  73           vs.split("\n").each { |v|
  74             out.print "#{k}: #{v}\r\n"
  75           }
  76         }
  77         out.print "\r\n"
  78         out.flush
  79       end
  80
  81       def self.send_body(out, body)
  82         body.each { |part|
  83           out.print part
  84           out.flush
  85         }
  86       end
  87     end
  88   end
  89 end