|
| 1 | +# |
| 2 | +# XML-RPC SERVER |
| 3 | +# $Id$ |
| 4 | +# |
| 5 | +# an asynchronous XML-RPC server for Medusa |
| 6 | +# |
| 7 | +# written by Sam Rushing |
| 8 | +# |
| 9 | +# Based on "xmlrpcserver.py" by Fredrik Lundh ([email protected]) |
| 10 | +# |
| 11 | + |
| 12 | +import http_server |
| 13 | +import xmlrpclib |
| 14 | + |
| 15 | +import regex |
| 16 | +import string |
| 17 | +import sys |
| 18 | + |
| 19 | +class xmlrpc_handler: |
| 20 | + |
| 21 | + def match (self, request): |
| 22 | + # Note: /RPC2 is not required by the spec, so you may override this method. |
| 23 | + if request.uri[:5] == '/RPC2': |
| 24 | + return 1 |
| 25 | + else: |
| 26 | + return 0 |
| 27 | + |
| 28 | + def handle_request (self, request): |
| 29 | + [path, params, query, fragment] = request.split_uri() |
| 30 | + |
| 31 | + if request.command in ('post', 'put'): |
| 32 | + request.collector = collector (self, request) |
| 33 | + else: |
| 34 | + request.error (400) |
| 35 | + |
| 36 | + def continue_request (self, data, request): |
| 37 | + params, method = xmlrpclib.loads (data) |
| 38 | + try: |
| 39 | + # generate response |
| 40 | + try: |
| 41 | + response = self.call (method, params) |
| 42 | + response = (response,) |
| 43 | + except: |
| 44 | + # report exception back to server |
| 45 | + response = xmlrpclib.dumps ( |
| 46 | + xmlrpclib.Fault (1, "%s:%s" % (sys.exc_type, sys.exc_value)) |
| 47 | + ) |
| 48 | + else: |
| 49 | + response = xmlrpclib.dumps (response, methodresponse=1) |
| 50 | + except: |
| 51 | + # internal error, report as HTTP server error |
| 52 | + request.error (500) |
| 53 | + else: |
| 54 | + # got a valid XML RPC response |
| 55 | + request['Content-Type'] = 'text/xml' |
| 56 | + request.push (response) |
| 57 | + request.done() |
| 58 | + |
| 59 | + def call (self, method, params): |
| 60 | + # override this method to implement RPC methods |
| 61 | + raise "NotYetImplemented" |
| 62 | + |
| 63 | +class collector: |
| 64 | + |
| 65 | + "gathers input for POST and PUT requests" |
| 66 | + |
| 67 | + def __init__ (self, handler, request): |
| 68 | + |
| 69 | + self.handler = handler |
| 70 | + self.request = request |
| 71 | + self.data = '' |
| 72 | + |
| 73 | + # make sure there's a content-length header |
| 74 | + cl = request.get_header ('content-length') |
| 75 | + |
| 76 | + if not cl: |
| 77 | + request.error (411) |
| 78 | + else: |
| 79 | + cl = string.atoi (cl) |
| 80 | + # using a 'numeric' terminator |
| 81 | + self.request.channel.set_terminator (cl) |
| 82 | + |
| 83 | + def collect_incoming_data (self, data): |
| 84 | + self.data = self.data + data |
| 85 | + |
| 86 | + def found_terminator (self): |
| 87 | + # set the terminator back to the default |
| 88 | + self.request.channel.set_terminator ('\r\n\r\n') |
| 89 | + self.handler.continue_request (self.data, self.request) |
| 90 | + |
| 91 | +if __name__ == '__main__': |
| 92 | + |
| 93 | + class rpc_demo (xmlrpc_handler): |
| 94 | + |
| 95 | + def call (self, method, params): |
| 96 | + print 'method="%s" params=%s' % (method, params) |
| 97 | + return "Sure, that works" |
| 98 | + |
| 99 | + import asyncore |
| 100 | + import http_server |
| 101 | + |
| 102 | + hs = http_server.http_server ('', 8000) |
| 103 | + rpc = rpc_demo() |
| 104 | + hs.install_handler (rpc) |
| 105 | + |
| 106 | + asyncore.loop() |
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