# This requires the free xml-rpc library available from
# http://www.pythonware.com/products/xmlrpc/
#
# See Examples/XMLRPCExample.py for sample usage.
#
# Sometimes xmlrpclib is installed as a package, sometimes not. So we'll
# make sure it works either way.
try:
from xmlrpclib import xmlrpclib
except ImportError:
import xmlrpclib
import sys, string, traceback
from RPCServlet import RPCServlet
class XMLRPCServlet(RPCServlet):
"""
XMLRPCServlet is a base class for XML-RPC servlets.
See Examples/XMLRPCExample.py for sample usage.
For more Pythonic convenience at the cost of language independence,
see PickleRPCServlet.
"""
def respondToPost(self, transaction):
"""
This is similar to the xmlrpcserver.py example from the xmlrpc
library distribution, only it's been adapted to work within a
WebKit servlet.
"""
try:
# get arguments
data = transaction.request().rawInput(rewind=1).read()
encoding = _getXmlDeclAttr(data, "encoding")
params, method = xmlrpclib.loads(data)
# generate response
try:
# This first test helps us to support PythonWin, which uses
# repeated calls to __methods__.__getitem__ to determine the
# allowed methods of an object.
if method == '__methods__.__getitem__':
response = self.exposedMethods()[params[0]]
else:
response = self.call(method, *params)
if type(response) != type(()):
response = (response,)
except Exception, e:
fault = self.resultForException(e, transaction)
response = xmlrpclib.dumps(xmlrpclib.Fault(1, fault), encoding=encoding)
self.sendOK('text/xml', response, transaction)
self.handleException(transaction)
except: # if it's a string exception, this gets triggered
fault = self.resultForException(sys.exc_info()[0], transaction)
response = xmlrpclib.dumps(xmlrpclib.Fault(1, fault), encoding=encoding)
self.sendOK('text/xml', response, transaction)
self.handleException(transaction)
else:
response = xmlrpclib.dumps(response, methodresponse=1, encoding=encoding)
self.sendOK('text/xml', response, transaction)
except:
# internal error, report as HTTP server error
print 'XMLRPCServlet internal error'
print string.join(traceback.format_exception(sys.exc_info()[0],sys.exc_info()[1],sys.exc_info()[2]))
transaction.response().setStatus(500, 'Server Error')
self.handleException(transaction)
# Helper functions
def _getXmlDeclAttr(xml, attName):
""" gets attribute value from xml declaration (<?xml ... ?>) """
s = xml[6 : xml.find("?>")] # 'version = "1.0" encoding = "Cp1251"'
p = s.find(attName)
if p==-1:
return None
s=s[p+len(attName):] # '= "Cp1251"'
s=s[s.find('=')+1:].strip() # '"Cp1251"'
return s[1:s.find(s[0],1)] # 'Cp1251'