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Python Open Source » Web Services » Python Service Objects 
Python Service Objects » pso 0.98.D » py » pso » nsapyrequest.py
#
#   nsapy.py  - Python Service Objects
#
#   Author: Thanos Vassilakis thanos@0x01.com
#
#     Copyright (c) thanos vassilakis 2000,2001, 2002
#
#  This library is free software; you can redistribute it and/or 
#  modify it under the terms of the GNU Lesser General Public License 
#  as published by the Free Software Foundation; either version 2.1 of the 
#  License, or (at your option) any later version.
#
#  This library 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 Lesser General Public License for more details.
#
#  See terms of license at gnu.org. 
#
#   $Id: nsapyrequest.py,v 1.4 2002/06/19 15:32:44 thanos Exp $
#
__version__="$Revision: 1.4 $"





import os
from pso.request import ServiceRequest
from pso.requestimpl import RequestImpl

def buildEnviron( pblock, environ = {}):
  if pblock:
    buff = pblock.pblock2str()
    buff = buff.replace('\\"', 'MinggniM')

    list = buff.split( '"' )
    list = map(lambda var,oldsep='MinggniM',newsep='"':var.replace(oldsep, newsep), list)
    for n in range( 1, len( list ), 2 ):
      key = list[n-1][:-1]
      key = key.strip()
      environ[key]  = list[n]
  return environ


def envReKey(environ):
  keys = {
        "content-length": "CONTENT_LENGTH" ,
         "content-type": "CONTENT_TYPE"  ,
         "accept": "HTTP_ACCEPT"  ,
         "accept-encoding": "HTTP_ACCEPT_ENCODING"  ,
         "accept-language": "HTTP_ACCEPT_LANGUAGE"  ,
         "authorization": "HTTP_AUTHORIZATION"  ,
         "cookie" :"HTTP_COOKIE" ,
         "if-modified-since": "HTTP_IF_MODIFIED_SINCE"  ,
         "referer": "HTTP_REFERER"  ,
         "user-agent":"HTTP_USER_AGENT"  ,
         "auth-type": "AUTH_TYPE"  ,
         "path-info": "PATH_INFO"  ,
         "auth-user": "REMOTE_USER"  ,
         "keysize": "HTTPS_KEYSIZE"  ,
         "secret-keysize" :"HTTPS_SECRETSIZE" ,
         "ip": "REMOTE_ADDR"  ,
         "security_active": "HTTPS"  ,
         "host": "HTTP_HOST"  ,
         "server_hostname": "SERVER_NAME"  ,
   "query" : "QUERY_STRING", 
         "clf-request" : "REQUEST_LINE", 
         "method" : "REQUEST_METHOD", 
         "uri" : "SCRIPT_NAME", 
         "protocol" : "SERVER_PROTOCOL"
    }
  newenv = {}
  for key, value in [(key, value) for key, value in environ.items() if key in keys]:
      newenv[key] = value
  return newenv  




class NsapyRequest(RequestImpl):
  """ Concrete Implementation class for a Nsapi Request """
  COOKIE_KEY='HTTP_COOKIE'
  def __init__(self, req=None):
    self._req= req

  def req(self):
    return self._req


  def getOutStream(self):
    return self.ostream

  def getCookieKey(self):
    return self.COOKIE_KEY

  def getEnviron(self, handler): 
    env = {}
    try:
        env.update( os.environ ) 
    except:
        pass 
    
    env = buildEnviron( self.req().pb, env )
    env = buildEnviron( self.req().sn.session_dns(), env )
    env = buildEnviron( self.req().sn.client(), env )
    env = buildEnviron( self.req().rq.reqpb, env )
    env = buildEnviron( self.req().rq.headers, env )
    env = buildEnviron( self.req().rq.srvhdrs, env )
    env = buildEnviron( self.req().rq.vars, env )
    env = envReKey(env)
    env["SERVER_PORT"] = env["SERVER_NAME"] = ''
    host = env["HTTP_HOST"]
    if ":" in host:
      host, port = host.split(":")
    env["SERVER_PORT"] = port
    env["SERVER_NAME"] = host
    if env.has_key('PATH_INFO'):
      env["SCRIPT_NAME"] = env["SCRIPT_NAME"][:-len( env["PATH-INFO"] )]
    env['SERVER_URL'] = "http://%(SERVER_NAME)s:%(SERVER_PORT)s" % env
    return env
  

  def send_http_header(self, handler):
    handler.write(str(self.getHeadersOut()))
    handler.write('\n')

  def getInputs(self, handler, key=None, default=None, index=0):
    from cgi import FieldStorage
    if handler.getEnviron('REQUEST_METHOD') in  ( "POST", "PUT" ):
      ln = int( self.req().rq.request_header( "content-length", self.sn ) )
      data = self.req().sn.form_data( ln )
      stdin = StringIO( data )
      form = FieldStorage(file = stdin, env = handler.getEnviron())
    else:
      form = FieldStorage(environ = handler.getEnviron())
    return form

  def getServerReturn(self):
    return SERVER_RETURN
    
    
  def syncHeadersOut(self, headers):
    for k,v in headers.flatten():
      self.req().rq.srvhdrs.nvinsert(k, v)
    


        
class NSAPYServiceRequest(ServiceRequest):
  def __init__(self, sessionImpl=None):
    ServiceRequest.__init__(self, NsapyRequest, sessionImpl)
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