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- #
- # XML-RPC CLIENT LIBRARY
- # $Id: xmlrpclib.py,v 1.15 2001/12/19 21:40:04 effbot Exp $
- #
- # an XML-RPC client interface for Python.
- #
- # the marshalling and response parser code can also be used to
- # implement XML-RPC servers.
- #
- # Notes:
- # this version is designed to work with Python 1.5.2 or newer.
- # unicode encoding support requires at least Python 1.6.
- # experimental HTTPS requires Python 2.0 built with SSL sockets.
- # expat parser support requires Python 2.0 with pyexpat support.
- #
- # History:
- # 1999-01-14 fl Created
- # 1999-01-15 fl Changed dateTime to use localtime
- # 1999-01-16 fl Added Binary/base64 element, default to RPC2 service
- # 1999-01-19 fl Fixed array data element (from Skip Montanaro)
- # 1999-01-21 fl Fixed dateTime constructor, etc.
- # 1999-02-02 fl Added fault handling, handle empty sequences, etc.
- # 1999-02-10 fl Fixed problem with empty responses (from Skip Montanaro)
- # 1999-06-20 fl Speed improvements, pluggable parsers/transports (0.9.8)
- # 2000-11-28 fl Changed boolean to check the truth value of its argument
- # 2001-02-24 fl Added encoding/Unicode/SafeTransport patches
- # 2001-02-26 fl Added compare support to wrappers (0.9.9/1.0b1)
- # 2001-03-28 fl Make sure response tuple is a singleton
- # 2001-03-29 fl Don't require empty params element (from Nicholas Riley)
- # 2001-06-10 fl Folded in _xmlrpclib accelerator support (1.0b2)
- # 2001-08-20 fl Base xmlrpclib.Error on built-in Exception (from Paul Prescod)
- # 2001-09-03 fl Allow Transport subclass to override getparser
- # 2001-09-10 fl Lazy import of urllib, cgi, xmllib (20x import speedup)
- # 2001-10-01 fl Remove containers from memo cache when done with them
- # 2001-10-01 fl Use faster escape method (80% dumps speedup)
- # 2001-10-10 sm Allow long ints to be passed as ints if they don't overflow
- # 2001-10-17 sm test for int and long overflow (allows use on 64-bit systems)
- # 2001-11-12 fl Use repr() to marshal doubles (from Paul Felix)
- #
- # Copyright (c) 1999-2001 by Secret Labs AB.
- # Copyright (c) 1999-2001 by Fredrik Lundh.
- #
- # info@pythonware.com
- # http://www.pythonware.com
- #
- # --------------------------------------------------------------------
- # The XML-RPC client interface is
- #
- # Copyright (c) 1999-2001 by Secret Labs AB
- # Copyright (c) 1999-2001 by Fredrik Lundh
- #
- # By obtaining, using, and/or copying this software and/or its
- # associated documentation, you agree that you have read, understood,
- # and will comply with the following terms and conditions:
- #
- # Permission to use, copy, modify, and distribute this software and
- # its associated documentation for any purpose and without fee is
- # hereby granted, provided that the above copyright notice appears in
- # all copies, and that both that copyright notice and this permission
- # notice appear in supporting documentation, and that the name of
- # Secret Labs AB or the author not be used in advertising or publicity
- # pertaining to distribution of the software without specific, written
- # prior permission.
- #
- # SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
- # TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
- # ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
- # BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
- # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- # OF THIS SOFTWARE.
- # --------------------------------------------------------------------
-
- #
- # things to look into:
-
- # TODO: support basic authentication (see robin's patch)
- # TODO: fix host tuple handling in the server constructor
- # TODO: let transport verify schemes
- # TODO: update documentation
- # TODO: authentication plugins
-
- """
- An XML-RPC client interface for Python.
-
- The marshalling and response parser code can also be used to
- implement XML-RPC servers.
-
- Exported exceptions:
-
- Error Base class for client errors
- ProtocolError Indicates an HTTP protocol error
- ResponseError Indicates a broken response package
- Fault Indicates an XML-RPC fault package
-
- Exported classes:
-
- ServerProxy Represents a logical connection to an XML-RPC server
-
- Boolean boolean wrapper to generate a "boolean" XML-RPC value
- DateTime dateTime wrapper for an ISO 8601 string or time tuple or
- localtime integer value to generate a "dateTime.iso8601"
- XML-RPC value
- Binary binary data wrapper
-
- SlowParser Slow but safe standard parser (based on xmllib)
- Marshaller Generate an XML-RPC params chunk from a Python data structure
- Unmarshaller Unmarshal an XML-RPC response from incoming XML event message
- Transport Handles an HTTP transaction to an XML-RPC server
- SafeTransport Handles an HTTPS transaction to an XML-RPC server
-
- Exported constants:
-
- True
- False
-
- Exported functions:
-
- boolean Convert any Python value to an XML-RPC boolean
- getparser Create instance of the fastest available parser & attach
- to an unmarshalling object
- dumps Convert an argument tuple or a Fault instance to an XML-RPC
- request (or response, if the methodresponse option is used).
- loads Convert an XML-RPC packet to unmarshalled data plus a method
- name (None if not present).
- """
-
- import re, string, time, operator
-
- from types import *
-
- try:
- unicode
- except NameError:
- unicode = None # unicode support not available
-
- def _decode(data, encoding, is8bit=re.compile("[\x80-\xff]").search):
- # decode non-ascii string (if possible)
- if unicode and encoding and is8bit(data):
- data = unicode(data, encoding)
- return data
-
- def escape(s, replace=string.replace):
- s = replace(s, "&", "&")
- s = replace(s, "<", "<")
- return replace(s, ">", ">",)
-
- MAXINT = 2L**31-1
- MININT = -2L**31
-
- if unicode:
- def _stringify(string):
- # convert to 7-bit ascii if possible
- try:
- return str(string)
- except UnicodeError:
- return string
- else:
- def _stringify(string):
- return string
-
- __version__ = "1.0.0"
-
- # --------------------------------------------------------------------
- # Exceptions
-
- class Error(Exception):
- """Base class for client errors."""
- def __str__(self):
- return repr(self)
-
- class ProtocolError(Error):
- """Indicates an HTTP protocol error."""
- def __init__(self, url, errcode, errmsg, headers):
- Error.__init__(self)
- self.url = url
- self.errcode = errcode
- self.errmsg = errmsg
- self.headers = headers
- def __repr__(self):
- return (
- "<ProtocolError for %s: %s %s>" %
- (self.url, self.errcode, self.errmsg)
- )
-
- class ResponseError(Error):
- """Indicates a broken response package."""
- pass
-
- class Fault(Error):
- """Indicates an XML-RPC fault package."""
- def __init__(self, faultCode, faultString, **extra):
- Error.__init__(self)
- self.faultCode = faultCode
- self.faultString = faultString
- def __repr__(self):
- return (
- "<Fault %s: %s>" %
- (self.faultCode, repr(self.faultString))
- )
-
- # --------------------------------------------------------------------
- # Special values
-
- class Boolean:
- """Boolean-value wrapper.
-
- Use True or False to generate a "boolean" XML-RPC value.
- """
-
- def __init__(self, value = 0):
- self.value = operator.truth(value)
-
- def encode(self, out):
- out.write("<value><boolean>%d</boolean></value>\n" % self.value)
-
- def __cmp__(self, other):
- if isinstance(other, Boolean):
- other = other.value
- return cmp(self.value, other)
-
- def __repr__(self):
- if self.value:
- return "<Boolean True at %x>" % id(self)
- else:
- return "<Boolean False at %x>" % id(self)
-
- def __int__(self):
- return self.value
-
- def __nonzero__(self):
- return self.value
-
- True, False = Boolean(1), Boolean(0)
-
- def boolean(value, truefalse=(False, True)):
- """Convert any Python value to XML-RPC 'boolean'."""
- return truefalse[operator.truth(value)]
-
- class DateTime:
- """DateTime wrapper for an ISO 8601 string or time tuple or
- localtime integer value to generate 'dateTime.iso8601' XML-RPC
- value.
- """
-
- def __init__(self, value=0):
- if not isinstance(value, StringType):
- if not isinstance(value, TupleType):
- if value == 0:
- value = time.time()
- value = time.localtime(value)
- value = time.strftime("%Y%m%dT%H:%M:%S", value)
- self.value = value
-
- def __cmp__(self, other):
- if isinstance(other, DateTime):
- other = other.value
- return cmp(self.value, other)
-
- def __repr__(self):
- return "<DateTime %s at %x>" % (self.value, id(self))
-
- def decode(self, data):
- self.value = string.strip(data)
-
- def encode(self, out):
- out.write("<value><dateTime.iso8601>")
- out.write(self.value)
- out.write("</dateTime.iso8601></value>\n")
-
- def datetime(data):
- value = DateTime()
- value.decode(data)
- return value
-
- class Binary:
- """Wrapper for binary data."""
-
- def __init__(self, data=None):
- self.data = data
-
- def __cmp__(self, other):
- if isinstance(other, Binary):
- other = other.data
- return cmp(self.data, other)
-
- def decode(self, data):
- import base64
- self.data = base64.decodestring(data)
-
- def encode(self, out):
- import base64, StringIO
- out.write("<value><base64>\n")
- base64.encode(StringIO.StringIO(self.data), out)
- out.write("</base64></value>\n")
-
- def binary(data):
- value = Binary()
- value.decode(data)
- return value
-
- WRAPPERS = DateTime, Binary, Boolean
-
- # --------------------------------------------------------------------
- # XML parsers
-
- try:
- # optional xmlrpclib accelerator. for more information on this
- # component, contact info@pythonware.com
- import _xmlrpclib
- FastParser = _xmlrpclib.Parser
- FastUnmarshaller = _xmlrpclib.Unmarshaller
- except (AttributeError, ImportError):
- FastParser = FastUnmarshaller = None
-
- #
- # the SGMLOP parser is about 15x faster than Python's builtin
- # XML parser. SGMLOP sources can be downloaded from:
- #
- # http://www.pythonware.com/products/xml/sgmlop.htm
- #
-
- try:
- import sgmlop
- if not hasattr(sgmlop, "XMLParser"):
- raise ImportError
- except ImportError:
- SgmlopParser = None # sgmlop accelerator not available
- else:
- class SgmlopParser:
- def __init__(self, target):
-
- # setup callbacks
- self.finish_starttag = target.start
- self.finish_endtag = target.end
- self.handle_data = target.data
- self.handle_xml = target.xml
-
- # activate parser
- self.parser = sgmlop.XMLParser()
- self.parser.register(self)
- self.feed = self.parser.feed
- self.entity = {
- "amp": "&", "gt": ">", "lt": "<",
- "apos": "'", "quot": '"'
- }
-
- def close(self):
- try:
- self.parser.close()
- finally:
- self.parser = self.feed = None # nuke circular reference
-
- def handle_proc(self, tag, attr):
- import re
- m = re.search("encoding\s*=\s*['\"]([^\"']+)[\"']", attr)
- if m:
- self.handle_xml(m.group(1), 1)
-
- def handle_entityref(self, entity):
- # <string> entity
- try:
- self.handle_data(self.entity[entity])
- except KeyError:
- self.handle_data("&%s;" % entity)
-
- try:
- from xml.parsers import expat
- if not hasattr(expat, "ParserCreate"):
- raise ImportError, "ParserCreate"
- except ImportError:
- ExpatParser = None
- else:
- class ExpatParser:
- # fast expat parser for Python 2.0. this is about 50%
- # slower than sgmlop, on roundtrip testing
- def __init__(self, target):
- self._parser = parser = expat.ParserCreate(None, None)
- self._target = target
- parser.StartElementHandler = target.start
- parser.EndElementHandler = target.end
- parser.CharacterDataHandler = target.data
- encoding = None
- if not parser.returns_unicode:
- encoding = "utf-8"
- target.xml(encoding, None)
-
- def feed(self, data):
- self._parser.Parse(data, 0)
-
- def close(self):
- self._parser.Parse("", 1) # end of data
- del self._target, self._parser # get rid of circular references
-
- class SlowParser:
- """Default XML parser (based on xmllib.XMLParser)."""
- # this is about 10 times slower than sgmlop, on roundtrip
- # testing.
- def __init__(self, target):
- import xmllib # lazy subclassing (!)
- if xmllib.XMLParser not in SlowParser.__bases__:
- SlowParser.__bases__ = (xmllib.XMLParser,)
- self.handle_xml = target.xml
- self.unknown_starttag = target.start
- self.handle_data = target.data
- self.unknown_endtag = target.end
- try:
- xmllib.XMLParser.__init__(self, accept_utf8=1)
- except TypeError:
- xmllib.XMLParser.__init__(self) # pre-2.0
-
- # --------------------------------------------------------------------
- # XML-RPC marshalling and unmarshalling code
-
- class Marshaller:
- """Generate an XML-RPC params chunk from a Python data structure.
-
- Create a Marshaller instance for each set of parameters, and use
- the "dumps" method to convert your data (represented as a tuple)
- to an XML-RPC params chunk. To write a fault response, pass a
- Fault instance instead. You may prefer to use the "dumps" module
- function for this purpose.
- """
-
- # by the way, if you don't understand what's going on in here,
- # that's perfectly ok.
-
- def __init__(self, encoding=None):
- self.memo = {}
- self.data = None
- self.encoding = encoding
-
- dispatch = {}
-
- def dumps(self, values):
- self.__out = []
- self.write = write = self.__out.append
- if isinstance(values, Fault):
- # fault instance
- write("<fault>\n")
- self.__dump(vars(values))
- write("</fault>\n")
- else:
- # parameter block
- # FIXME: the xml-rpc specification allows us to leave out
- # the entire <params> block if there are no parameters.
- # however, changing this may break older code (including
- # old versions of xmlrpclib.py), so this is better left as
- # is for now. See @XMLRPC3 for more information. /F
- write("<params>\n")
- for v in values:
- write("<param>\n")
- self.__dump(v)
- write("</param>\n")
- write("</params>\n")
- result = string.join(self.__out, "")
- del self.__out, self.write # don't need this any more
- return result
-
- def __dump(self, value):
- try:
- f = self.dispatch[type(value)]
- except KeyError:
- raise TypeError, "cannot marshal %s objects" % type(value)
- else:
- f(self, value)
-
- def dump_int(self, value):
- # in case ints are > 32 bits
- if value > MAXINT or value < MININT:
- raise OverflowError, "int exceeds XML-RPC limits"
- self.write("<value><int>%s</int></value>\n" % value)
- dispatch[IntType] = dump_int
-
- def dump_long(self, value):
- # in case ints are > 32 bits
- if value > MAXINT or value < MININT:
- raise OverflowError, "long int exceeds XML-RPC limits"
- self.write("<value><int>%s</int></value>\n" % int(value))
- dispatch[LongType] = dump_long
-
- def dump_double(self, value):
- self.write("<value><double>%s</double></value>\n" % repr(value))
- dispatch[FloatType] = dump_double
-
- def dump_string(self, value, escape=escape):
- self.write("<value><string>%s</string></value>\n" % escape(value))
- dispatch[StringType] = dump_string
-
- if unicode:
- def dump_unicode(self, value, escape=escape):
- value = value.encode(self.encoding)
- self.write("<value><string>%s</string></value>\n" % escape(value))
- dispatch[UnicodeType] = dump_unicode
-
- def opencontainer(self, value):
- if value:
- i = id(value)
- if self.memo.has_key(i):
- raise TypeError, "cannot marshal recursive data structures"
- self.memo[i] = None
-
- def closecontainer(self, value):
- if value:
- del self.memo[id(value)]
-
- def dump_array(self, value):
- self.opencontainer(value)
- write = self.write
- dump = self.__dump
- write("<value><array><data>\n")
- for v in value:
- dump(v)
- write("</data></array></value>\n")
- self.closecontainer(value)
- dispatch[TupleType] = dump_array
- dispatch[ListType] = dump_array
-
- def dump_struct(self, value, escape=escape):
- self.opencontainer(value)
- write = self.write
- dump = self.__dump
- write("<value><struct>\n")
- for k, v in value.items():
- write("<member>\n")
- if type(k) is not StringType:
- raise TypeError, "dictionary key must be string"
- write("<name>%s</name>\n" % escape(k))
- dump(v)
- write("</member>\n")
- write("</struct></value>\n")
- self.closecontainer(value)
- dispatch[DictType] = dump_struct
-
- def dump_instance(self, value):
- # check for special wrappers
- if value.__class__ in WRAPPERS:
- value.encode(self)
- else:
- # store instance attributes as a struct (really?)
- self.dump_struct(value.__dict__)
- dispatch[InstanceType] = dump_instance
-
- class Unmarshaller:
- """Unmarshal an XML-RPC response, based on incoming XML event
- messages (start, data, end). Call close() to get the resulting
- data structure.
-
- Note that this reader is fairly tolerant, and gladly accepts bogus
- XML-RPC data without complaining (but not bogus XML).
- """
-
- # and again, if you don't understand what's going on in here,
- # that's perfectly ok.
-
- def __init__(self):
- self._type = None
- self._stack = []
- self._marks = []
- self._data = []
- self._methodname = None
- self._encoding = "utf-8"
- self.append = self._stack.append
-
- def close(self):
- # return response tuple and target method
- if self._type is None or self._marks:
- raise ResponseError()
- if self._type == "fault":
- raise apply(Fault, (), self._stack[0])
- return tuple(self._stack)
-
- def getmethodname(self):
- return self._methodname
-
- #
- # event handlers
-
- def xml(self, encoding, standalone):
- self._encoding = encoding
- # FIXME: assert standalone == 1 ???
-
- def start(self, tag, attrs):
- # prepare to handle this element
- if tag == "array" or tag == "struct":
- self._marks.append(len(self._stack))
- self._data = []
- self._value = (tag == "value")
-
- def data(self, text):
- self._data.append(text)
-
- def end(self, tag, join=string.join):
- # call the appropriate end tag handler
- try:
- f = self.dispatch[tag]
- except KeyError:
- pass # unknown tag ?
- else:
- return f(self, join(self._data, ""))
-
- #
- # accelerator support
-
- def end_dispatch(self, tag, data):
- # dispatch data
- try:
- f = self.dispatch[tag]
- except KeyError:
- pass # unknown tag ?
- else:
- return f(self, data)
-
- #
- # element decoders
-
- dispatch = {}
-
- def end_boolean(self, data):
- if data == "0":
- self.append(False)
- elif data == "1":
- self.append(True)
- else:
- raise TypeError, "bad boolean value"
- self._value = 0
- dispatch["boolean"] = end_boolean
-
- def end_int(self, data):
- self.append(int(data))
- self._value = 0
- dispatch["i4"] = end_int
- dispatch["int"] = end_int
-
- def end_double(self, data):
- self.append(float(data))
- self._value = 0
- dispatch["double"] = end_double
-
- def end_string(self, data):
- if self._encoding:
- data = _decode(data, self._encoding)
- self.append(_stringify(data))
- self._value = 0
- dispatch["string"] = end_string
- dispatch["name"] = end_string # struct keys are always strings
-
- def end_array(self, data):
- mark = self._marks[-1]
- del self._marks[-1]
- # map arrays to Python lists
- self._stack[mark:] = [self._stack[mark:]]
- self._value = 0
- dispatch["array"] = end_array
-
- def end_struct(self, data):
- mark = self._marks[-1]
- del self._marks[-1]
- # map structs to Python dictionaries
- dict = {}
- items = self._stack[mark:]
- for i in range(0, len(items), 2):
- dict[_stringify(items[i])] = items[i+1]
- self._stack[mark:] = [dict]
- self._value = 0
- dispatch["struct"] = end_struct
-
- def end_base64(self, data):
- value = Binary()
- value.decode(data)
- self.append(value)
- self._value = 0
- dispatch["base64"] = end_base64
-
- def end_dateTime(self, data):
- value = DateTime()
- value.decode(data)
- self.append(value)
- dispatch["dateTime.iso8601"] = end_dateTime
-
- def end_value(self, data):
- # if we stumble upon an value element with no internal
- # elements, treat it as a string element
- if self._value:
- self.end_string(data)
- dispatch["value"] = end_value
-
- def end_params(self, data):
- self._type = "params"
- dispatch["params"] = end_params
-
- def end_fault(self, data):
- self._type = "fault"
- dispatch["fault"] = end_fault
-
- def end_methodName(self, data):
- if self._encoding:
- data = _decode(data, self._encoding)
- self._methodname = data
- self._type = "methodName" # no params
- dispatch["methodName"] = end_methodName
-
-
- # --------------------------------------------------------------------
- # convenience functions
-
- def getparser():
- """getparser() -> parser, unmarshaller
-
- Create an instance of the fastest available parser, and attach it
- to an unmarshalling object. Return both objects.
- """
- if FastParser and FastUnmarshaller:
- target = FastUnmarshaller(True, False, binary, datetime)
- parser = FastParser(target)
- else:
- target = Unmarshaller()
- if FastParser:
- parser = FastParser(target)
- elif SgmlopParser:
- parser = SgmlopParser(target)
- elif ExpatParser:
- parser = ExpatParser(target)
- else:
- parser = SlowParser(target)
- return parser, target
-
- def dumps(params, methodname=None, methodresponse=None, encoding=None):
- """data [,options] -> marshalled data
-
- Convert an argument tuple or a Fault instance to an XML-RPC
- request (or response, if the methodresponse option is used).
-
- In addition to the data object, the following options can be given
- as keyword arguments:
-
- methodname: the method name for a methodCall packet
-
- methodresponse: true to create a methodResponse packet.
- If this option is used with a tuple, the tuple must be
- a singleton (i.e. it can contain only one element).
-
- encoding: the packet encoding (default is UTF-8)
-
- All 8-bit strings in the data structure are assumed to use the
- packet encoding. Unicode strings are automatically converted,
- where necessary.
- """
-
- assert isinstance(params, TupleType) or isinstance(params, Fault),\
- "argument must be tuple or Fault instance"
-
- if isinstance(params, Fault):
- methodresponse = 1
- elif methodresponse and isinstance(params, TupleType):
- assert len(params) == 1, "response tuple must be a singleton"
-
- if not encoding:
- encoding = "utf-8"
-
- m = Marshaller(encoding)
- data = m.dumps(params)
-
- if encoding != "utf-8":
- xmlheader = "<?xml version='1.0' encoding=%s?>\n" % repr(encoding)
- else:
- xmlheader = "<?xml version='1.0'?>\n" # utf-8 is default
-
- # standard XML-RPC wrappings
- if methodname:
- # a method call
- if not isinstance(methodname, StringType):
- methodname = methodname.encode(encoding)
- data = (
- xmlheader,
- "<methodCall>\n"
- "<methodName>", methodname, "</methodName>\n",
- data,
- "</methodCall>\n"
- )
- elif methodresponse:
- # a method response, or a fault structure
- data = (
- xmlheader,
- "<methodResponse>\n",
- data,
- "</methodResponse>\n"
- )
- else:
- return data # return as is
- return string.join(data, "")
-
- def loads(data):
- """data -> unmarshalled data, method name
-
- Convert an XML-RPC packet to unmarshalled data plus a method
- name (None if not present).
-
- If the XML-RPC packet represents a fault condition, this function
- raises a Fault exception.
- """
- p, u = getparser()
- p.feed(data)
- p.close()
- return u.close(), u.getmethodname()
-
-
- # --------------------------------------------------------------------
- # request dispatcher
-
- class _Method:
- # some magic to bind an XML-RPC method to an RPC server.
- # supports "nested" methods (e.g. examples.getStateName)
- def __init__(self, send, name):
- self.__send = send
- self.__name = name
- def __getattr__(self, name):
- return _Method(self.__send, "%s.%s" % (self.__name, name))
- def __call__(self, *args):
- return self.__send(self.__name, args)
-
-
- class Transport:
- """Handles an HTTP transaction to an XML-RPC server."""
-
- # client identifier (may be overridden)
- user_agent = "xmlrpclib.py/%s (by www.pythonware.com)" % __version__
-
- def request(self, host, handler, request_body, verbose=0):
- # issue XML-RPC request
-
- h = self.make_connection(host)
- if verbose:
- h.set_debuglevel(1)
-
- self.send_request(h, handler, request_body)
- self.send_host(h, host)
- self.send_user_agent(h)
- self.send_content(h, request_body)
-
- errcode, errmsg, headers = h.getreply()
-
- if errcode != 200:
- raise ProtocolError(
- host + handler,
- errcode, errmsg,
- headers
- )
-
- self.verbose = verbose
-
- return self.parse_response(h.getfile())
-
- def getparser(self):
- # get parser and unmarshaller
- return getparser()
-
- def make_connection(self, host):
- # create a HTTP connection object from a host descriptor
- import httplib
- return httplib.HTTP(host)
-
- def send_request(self, connection, handler, request_body):
- connection.putrequest("POST", handler)
-
- def send_host(self, connection, host):
- connection.putheader("Host", host)
-
- def send_user_agent(self, connection):
- connection.putheader("User-Agent", self.user_agent)
-
- def send_content(self, connection, request_body):
- connection.putheader("Content-Type", "text/xml")
- connection.putheader("Content-Length", str(len(request_body)))
- connection.endheaders()
- if request_body:
- connection.send(request_body)
-
- def parse_response(self, f):
- # read response from input file, and parse it
-
- p, u = self.getparser()
-
- while 1:
- response = f.read(1024)
- if not response:
- break
- if self.verbose:
- print "body:", repr(response)
- p.feed(response)
-
- f.close()
- p.close()
-
- return u.close()
-
- class SafeTransport(Transport):
- """Handles an HTTPS transaction to an XML-RPC server."""
-
- def make_connection(self, host):
- # create a HTTPS connection object from a host descriptor
- # host may be a string, or a (host, x509-dict) tuple
- import httplib
- if isinstance(host, TupleType):
- host, x509 = host
- else:
- x509 = {}
- try:
- HTTPS = httplib.HTTPS
- except AttributeError:
- raise NotImplementedError,\
- "your version of httplib doesn't support HTTPS"
- else:
- return apply(HTTPS, (host, None), x509)
-
- def send_host(self, connection, host):
- if isinstance(host, TupleType):
- host, x509 = host
- connection.putheader("Host", host)
-
- class ServerProxy:
- """uri [,options] -> a logical connection to an XML-RPC server
-
- uri is the connection point on the server, given as
- scheme://host/target.
-
- The standard implementation always supports the "http" scheme. If
- SSL socket support is available (Python 2.0), it also supports
- "https".
-
- If the target part and the slash preceding it are both omitted,
- "/RPC2" is assumed.
-
- The following options can be given as keyword arguments:
-
- transport: a transport factory
- encoding: the request encoding (default is UTF-8)
-
- All 8-bit strings passed to the server proxy are assumed to use
- the given encoding.
- """
-
- def __init__(self, uri, transport=None, encoding=None, verbose=0):
- # establish a "logical" server connection
-
- # get the url
- import urllib
- type, uri = urllib.splittype(uri)
- if type not in ("http", "https"):
- raise IOError, "unsupported XML-RPC protocol"
- self.__host, self.__handler = urllib.splithost(uri)
- if not self.__handler:
- self.__handler = "/RPC2"
-
- if transport is None:
- if type == "https":
- transport = SafeTransport()
- else:
- transport = Transport()
- self.__transport = transport
-
- self.__encoding = encoding
- self.__verbose = verbose
-
- def __request(self, methodname, params):
- # call a method on the remote server
-
- request = dumps(params, methodname, encoding=self.__encoding)
-
- response = self.__transport.request(
- self.__host,
- self.__handler,
- request,
- verbose=self.__verbose
- )
-
- if len(response) == 1:
- response = response[0]
-
- return response
-
- def __repr__(self):
- return (
- "<ServerProxy for %s%s>" %
- (self.__host, self.__handler)
- )
-
- __str__ = __repr__
-
- def __getattr__(self, name):
- # magic method dispatcher
- return _Method(self.__request, name)
-
- # note: to call a remote object with an non-standard name, use
- # result getattr(server, "strange-python-name")(args)
-
- # compatibility
- Server = ServerProxy
-
- # --------------------------------------------------------------------
- # test code
-
- if __name__ == "__main__":
-
- # simple test program (from the XML-RPC specification)
-
- # server = ServerProxy("http://localhost:8000") # local server
- server = ServerProxy("http://betty.userland.com")
-
- print server
-
- try:
- print server.examples.getStateName(41)
- except Error, v:
- print "ERROR", v
-