Class: Knjappserver::Httpsession::Http_request

Inherits:
Object
  • Object
show all
Defined in:
lib/include/class_httpsession_http_request.rb

Overview

This class parses the various HTTP requests into easy programmable objects. Get, post, cookie, meta and so on…

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Http_request

Sets the various required data on the object. Knjappserver, crlf and arguments.



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# File 'lib/include/class_httpsession_http_request.rb', line 13

def initialize(args)
	@args = args
	@kas = @args[:kas]
	@crlf = "\r\n"
end

Instance Attribute Details

#clength ⇒ Object (readonly)

Returns the value of attribute clength.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def clength
  @clength
end

#cookie ⇒ Object (readonly)

Returns the value of attribute cookie.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def cookie
  @cookie
end

#get ⇒ Object (readonly)

Returns the value of attribute get.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def get
  @get
end

#headers ⇒ Object (readonly)

Returns the value of attribute headers.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def headers
  @headers
end

#http_version ⇒ Object (readonly)

Returns the value of attribute http_version.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def http_version
  @http_version
end

#meta ⇒ Object (readonly)

Returns the value of attribute meta.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def meta
  @meta
end

#page_path ⇒ Object (readonly)

Returns the value of attribute page_path.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def page_path
  @page_path
end

#percent ⇒ Object (readonly)

Returns the value of attribute percent.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def percent
  @percent
end

#post ⇒ Object (readonly)

Returns the value of attribute post.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def post
  @post
end

#read ⇒ Object (readonly)

Returns the value of attribute read.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def read
  @read
end

#secs_left ⇒ Object (readonly)

Returns the value of attribute secs_left.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def secs_left
  @secs_left
end

#speed ⇒ Object (readonly)

Returns the value of attribute speed.



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# File 'lib/include/class_httpsession_http_request.rb', line 10

def speed
  @speed
end

Instance Method Details

#convert_post(seton, post_val, args = {}) ⇒ Object

Converts post-result to the right type of hash.



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# File 'lib/include/class_httpsession_http_request.rb', line 214

def convert_post(seton, post_val, args = {})
	post_val.each do |varname, value|
		Knj::Web.parse_name(seton, varname, value, args)
	end
end

#modified_since ⇒ Object

Parses the if-modified-since header and returns it as a Time-object. Returns false is no if-modified-since-header is given or raises an RuntimeError if it cant be parsed.



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# File 'lib/include/class_httpsession_http_request.rb', line 200

def modified_since
   return @modified_since if @modified_since
   return false if !@meta["HTTP_IF_MODIFIED_SINCE"]
   
   mod_match = @meta["HTTP_IF_MODIFIED_SINCE"].match(/^([A-z]+),\s+(\d+)\s+([A-z]+)\s+(\d+)\s+(\d+):(\d+):(\d+)\s+(.+)$/)
   raise "Could not parse 'HTTP_IF_MODIFIED_SINCE'." if !mod_match
   
   month_no = Datet.month_str_to_no(mod_match[3])
   @modified_since = Time.utc(mod_match[4].to_i, month_no, mod_match[2].to_i, mod_match[5].to_i, mod_match[6].to_i, mod_match[7].to_i)
   
   return @modified_since
end

#read_socket(socket, cont) ⇒ Object

Reads content from the socket until the end of headers. Also does various error-checks.



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# File 'lib/include/class_httpsession_http_request.rb', line 20

def read_socket(socket, cont)
	loop do
		raise Errno::ECONNRESET, "Socket closed." if socket.closed?
		read = socket.gets
		raise Errno::ECONNRESET, "Socket returned non-string: '#{read.class.name}'." if !read.is_a?(String)
		cont << read
		break if cont[-4..-1] == "\r\n\r\n" or cont[-2..-1] == "\n\n"
	end
end

#reset ⇒ Object 



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# File 'lib/include/class_httpsession_http_request.rb', line 30

def reset
   @modified_since = nil
   @get = nil
   @post = nil
   @cookie = nil
   @meta = nil
   @page_path = nil
   @headers = nil
   @http_version = nil
   @read = nil
   @clength = nil
   @speec = nil
   @percent = nil
   @secs_left = nil
end

#socket_parse(socket) ⇒ Object

Generates data on object from the given socket.



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# File 'lib/include/class_httpsession_http_request.rb', line 47

def socket_parse(socket)
   self.reset
	cont = ""
	self.read_socket(socket, cont)
	
	#Parse URI (page_path and get).
	match = cont.match(/^(GET|POST|HEAD)\s+(.+)\s+HTTP\/1\.(\d+)\s*/)
	raise "Could not parse request: '#{cont.split("\n").first}'." if !match
   
	@http_version = "1.#{match[3]}"
	
	method = match[1]
	cont = cont.gsub(match[0], "")
	
	uri = Knj::Web.parse_uri(match[2])
	
	page_filepath = Knj::Web.urldec(uri[:path])
	if page_filepath.length <= 0 or page_filepath == "/" or File.directory?("#{@kas.config[:doc_root]}/#{page_filepath}")
		page_filepath = "#{page_filepath}/#{@kas.config[:default_page]}"
	end
	
	@page_path = "#{@kas.config[:doc_root]}/#{page_filepath}"
	@get = Knj::Web.parse_urlquery(uri[:query], {:urldecode => true, :force_utf8 => true})
	
   if @get["_kas_httpsession_id"]
     @kas.httpsessions_ids[@get["_kas_httpsession_id"]] = @args[:httpsession]
	end
   
	begin
     #Parse headers, cookies and meta.
     @headers = {}
     @cookie = {}
     @meta = {
       "REQUEST_METHOD" => method,
       "QUERY_STRING" => uri[:query],
       "REQUEST_URI" => match[2],
       "SCRIPT_NAME" => uri[:path]
     }
     
     cont.scan(/^(\S+):\s*(.+)\r\n/) do |header_match|
       key = header_match[0].downcase
       val = header_match[1]
       
       @headers[key] = [] if !@headers.has_key?(key)
       @headers[key] << val
       
       case key
         when "cookie"
           Knj::Web.parse_cookies(val).each do |key, val|
             @cookie[key] = val
           end
         when "content-length"
           @clength = val.to_i
         else
           key = key.upcase.gsub("-", "_")
           @meta["HTTP_#{key}"] = val
       end
     end
     
     
     #Parse post
     @post = {}
     
     if method == "POST"
       post_treated = {}
       
       @speed = nil
       @read = 0
       post_data = ""
       
       Thread.new do
         begin
           time_cur = Time.now
           read_last = 0
           sleep 0.1
           
           while @clength and @read != nil and @read < @clength
             break if !@clength or !@read
             
             time_now = Time.now
             time_betw = time_now.to_f - time_cur.to_f
             read_betw = @read - read_last
             
             time_cur = time_now
             read_last = @read
             
             @percent = @read.to_f / @clength.to_f
             @speed = read_betw.to_f / time_betw.to_f
             
             bytes_left = @clength - read
             
             if @speed > 0 and bytes_left > 0
               @secs_left = bytes_left.to_f / @speed
             else
               @secs_left = false
             end
             
             sleep 2
           end
         rescue => e
           if @kas
             @kas.handle_error(e)
           else
             STDOUT.print Knj::Errors.error_str(e)
           end
         end
       end
       
       while @read < @clength
         read_size = @clength - @read
         read_size = 4096 if read_size > 4096
         
         raise Errno::ECONNRESET, "Socket closed." if socket.closed?
         read = socket.read(read_size)
         raise Errno::ECONNRESET, "Socket returned non-string: '#{read.class.name}'." if !read.is_a?(String)
         post_data << read
         @read += read.length
       end
       
       if @headers["content-type"] and match = @headers["content-type"].first.match(/^multipart\/form-data; boundary=(.+)\Z/)
         post_treated = Knjappserver::Httpsession::Post_multipart.new(
           "io" => StringIO.new("#{post_data}"),
           "boundary" => match[1],
           "crlf" => @crlf
         ).return
         
         self.convert_post(@post, post_treated, {:urldecode => false})
       else
         post_data.split("&").each do |splitted|
           splitted = splitted.split("=")
           key = Knj::Web.urldec(splitted[0]).to_s.encode("utf-8")
           val = splitted[1].to_s.encode("utf-8")
           post_treated[key] = val
         end
         
         self.convert_post(@post, post_treated, {:urldecode => true})
       end
     end
	ensure
     @read = nil
     @speed = nil
     @clength = nil
     @percent = nil
     @secs_left = nil
     
     #If it doesnt get unset we could have a serious memory reference GC problem.
     if @get["_kas_httpsession_id"]
       @kas.httpsessions_ids.delete(@get["_kas_httpsession_id"])
     end
   end
end