# -*- Mode: Python; tab-width: 4 -*-

# See http://www.xml-rpc.com/
#     http://www.pythonware.com/products/xmlrpc/

# Based on "xmlrpcserver.py" by Fredrik Lundh (fredrik@pythonware.com)

VERSION = "$Id: xmlrpc_handler.py,v 1.3 2001/05/01 11:44:49 andreas Exp $"

import http_server
import xmlrpclib

import string
import sys

class xmlrpc_handler:

    def match (self, request):
            # Note: /RPC2 is not required by the spec, so you may override this method.
        if request.uri[:5] == '/RPC2':
            return 1
        else:
            return 0
            
    def handle_request (self, request):
        [path, params, query, fragment] = request.split_uri()
        
        if request.command in ('post', 'put'):
            request.collector = collector (self, request)
        else:
            request.error (400)
            
    def continue_request (self, data, request):
        params, method = xmlrpclib.loads (data)
        try:
                # generate response
            try:
                response = self.call (method, params)
                if type(response) != type(()):
                    response = (response,)
            except:
                    # report exception back to server
                response = xmlrpclib.dumps (
                        xmlrpclib.Fault (1, "%s:%s" % (sys.exc_type, sys.exc_value))
                        )
            else:
                response = xmlrpclib.dumps (response, methodresponse=1)
        except:
                # internal error, report as HTTP server error
            request.error (500)
        else:
                # got a valid XML RPC response
            request['Content-Type'] = 'text/xml'
            request.push (response)
            request.done()
            
    def call (self, method, params):
            # override this method to implement RPC methods
        raise "NotYetImplemented"
        
class collector:

    "gathers input for POST and PUT requests"
    
    def __init__ (self, handler, request):
    
        self.handler = handler
        self.request = request
        self.data = ''
        
        # make sure there's a content-length header
        cl = request.get_header ('content-length')
        
        if not cl:
            request.error (411)
        else:
            cl = string.atoi (cl)
            # using a 'numeric' terminator
            self.request.channel.set_terminator (cl)
            
    def collect_incoming_data (self, data):
        self.data = self.data + data
        
    def found_terminator (self):
            # set the terminator back to the default
        self.request.channel.set_terminator ('\r\n\r\n')
        self.handler.continue_request (self.data, self.request)
        
if __name__ == '__main__':

    class rpc_demo (xmlrpc_handler):
    
        def call (self, method, params):
            print 'method="%s" params=%s' % (method, params)
            return "Sure, that works"
            
    import asyncore
    import http_server
    
    hs = http_server.http_server ('', 8000)
    rpc = rpc_demo()
    hs.install_handler (rpc)
    
    asyncore.loop()
