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#
# XML-RPC CLIENT LIBRARY
# $Id$
#
# 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 2.1 or newer.
#
# 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)
# 2001-10-02 fl More dumps microtuning
# 2001-10-04 fl Make sure import expat gets a parser (from Guido van Rossum)
# 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)
# 2002-03-17 fl Avoid buffered read when possible (from James Rucker)
# 2002-04-07 fl Added pythondoc comments
# 2002-04-16 fl Added __str__ methods to datetime/binary wrappers
# 2002-05-15 fl Added error constants (from Andrew Kuchling)
# 2002-06-27 fl Merged with Python CVS version
# 2002-10-22 fl Added basic authentication (based on code from Phillip Eby)
# 2003-01-22 sm Add support for the bool type
# 2003-02-27 gvr Remove apply calls
# 2003-04-24 sm Use cStringIO if available
# 2003-04-25 ak Add support for nil
# 2003-06-15 gn Add support for time.struct_time
# 2003-07-12 gp Correct marshalling of Faults
# 2003-10-31 mvl Add multicall support
# 2004-08-20 mvl Bump minimum supported Python version to 2.1
# 2014-12-02 ch/doko Add workaround for gzip bomb vulnerability
#
# Copyright (c) 1999-2002 by Secret Labs AB.
# Copyright (c) 1999-2002 by Fredrik Lundh.
#
# info@pythonware.com
# http://www.pythonware.com
#
# --------------------------------------------------------------------
# The XML-RPC client interface is
#
# Copyright (c) 1999-2002 by Secret Labs AB
# Copyright (c) 1999-2002 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.
# --------------------------------------------------------------------
"""
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
MultiCall Executor of boxcared xmlrpc requests
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
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:
(none)
Exported functions:
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 base64
import sys
import time
from datetime import datetime
from decimal import Decimal
import http.client
import urllib.parse
from xml.parsers import expat
import errno
from io import BytesIO
try:
import gzip
except ImportError:
gzip = None #python can be built without zlib/gzip support
# --------------------------------------------------------------------
# Internal stuff
def escape(s):
s = s.replace("&", "&")
s = s.replace("<", "<")
return s.replace(">", ">",)
# used in User-Agent header sent
__version__ = '%d.%d' % sys.version_info[:2]
# xmlrpc integer limits
MAXINT = 2**31-1
MININT = -2**31
# --------------------------------------------------------------------
# Error constants (from Dan Libby's specification at
# http://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php)
# Ranges of errors
PARSE_ERROR = -32700
SERVER_ERROR = -32600
APPLICATION_ERROR = -32500
SYSTEM_ERROR = -32400
TRANSPORT_ERROR = -32300
# Specific errors
NOT_WELLFORMED_ERROR = -32700
UNSUPPORTED_ENCODING = -32701
INVALID_ENCODING_CHAR = -32702
INVALID_XMLRPC = -32600
METHOD_NOT_FOUND = -32601
INVALID_METHOD_PARAMS = -32602
INTERNAL_ERROR = -32603
# --------------------------------------------------------------------
# Exceptions
##
# Base class for all kinds of client-side errors.
class Error(Exception):
"""Base class for client errors."""
__str__ = object.__str__
##
# Indicates an HTTP-level protocol error. This is raised by the HTTP
# transport layer, if the server returns an error code other than 200
# (OK).
#
# @param url The target URL.
# @param errcode The HTTP error code.
# @param errmsg The HTTP error message.
# @param headers The HTTP header dictionary.
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 (
"<%s for %s: %s %s>" %
(self.__class__.__name__, self.url, self.errcode, self.errmsg)
)
##
# Indicates a broken XML-RPC response package. This exception is
# raised by the unmarshalling layer, if the XML-RPC response is
# malformed.
class ResponseError(Error):
"""Indicates a broken response package."""
pass
##
# Indicates an XML-RPC fault response package. This exception is
# raised by the unmarshalling layer, if the XML-RPC response contains
# a fault string. This exception can also be used as a class, to
# generate a fault XML-RPC message.
#
# @param faultCode The XML-RPC fault code.
# @param faultString The XML-RPC fault string.
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 "<%s %s: %r>" % (self.__class__.__name__,
self.faultCode, self.faultString)
# --------------------------------------------------------------------
# Special values
##
# Backwards compatibility
boolean = Boolean = bool
def _iso8601_format(value):
if value.tzinfo is not None:
# XML-RPC only uses the naive portion of the datetime
value = value.replace(tzinfo=None)
# XML-RPC doesn't use '-' separator in the date part
return value.isoformat(timespec='seconds').replace('-', '')
def _strftime(value):
if isinstance(value, datetime):
return _iso8601_format(value)
if not isinstance(value, (tuple, time.struct_time)):
if value == 0:
value = time.time()
value = time.localtime(value)
return "%04d%02d%02dT%02d:%02d:%02d" % value[:6]
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 isinstance(value, str):
self.value = value
else:
self.value = _strftime(value)
def make_comparable(self, other):
if isinstance(other, DateTime):
s = self.value
o = other.value
elif isinstance(other, datetime):
s = self.value
o = _iso8601_format(other)
elif isinstance(other, str):
s = self.value
o = other
elif hasattr(other, "timetuple"):
s = self.timetuple()
o = other.timetuple()
else:
s = self
o = NotImplemented
return s, o
def __lt__(self, other):
s, o = self.make_comparable(other)
if o is NotImplemented:
return NotImplemented
return s < o
def __le__(self, other):
s, o = self.make_comparable(other)
if o is NotImplemented:
return NotImplemented
return s <= o
def __gt__(self, other):
s, o = self.make_comparable(other)
if o is NotImplemented:
return NotImplemented
return s > o
def __ge__(self, other):
s, o = self.make_comparable(other)
if o is NotImplemented:
return NotImplemented
return s >= o
def __eq__(self, other):
s, o = self.make_comparable(other)
if o is NotImplemented:
return NotImplemented
return s == o
def timetuple(self):
return time.strptime(self.value, "%Y%m%dT%H:%M:%S")
##
# Get date/time value.
#
# @return Date/time value, as an ISO 8601 string.
def __str__(self):
return self.value
def __repr__(self):
return "<%s %r at %#x>" % (self.__class__.__name__, self.value, id(self))
def decode(self, data):
self.value = str(data).strip()
def encode(self, out):
out.write("<value><dateTime.iso8601>")
out.write(self.value)
out.write("</dateTime.iso8601></value>\n")
def _datetime(data):
# decode xml element contents into a DateTime structure.
value = DateTime()
value.decode(data)
return value
def _datetime_type(data):
return datetime.strptime(data, "%Y%m%dT%H:%M:%S")
##
# Wrapper for binary data. This can be used to transport any kind
# of binary data over XML-RPC, using BASE64 encoding.
#
# @param data An 8-bit string containing arbitrary data.
class Binary:
"""Wrapper for binary data."""
def __init__(self, data=None):
if data is None:
data = b""
else:
if not isinstance(data, (bytes, bytearray)):
raise TypeError("expected bytes or bytearray, not %s" %
data.__class__.__name__)
data = bytes(data) # Make a copy of the bytes!
self.data = data
##
# Get buffer contents.
#
# @return Buffer contents, as an 8-bit string.
def __str__(self):
return str(self.data, "latin-1") # XXX encoding?!
def __eq__(self, other):
if isinstance(other, Binary):
other = other.data
return self.data == other
def decode(self, data):
self.data = base64.decodebytes(data)
def encode(self, out):
out.write("<value><base64>\n")
encoded = base64.encodebytes(self.data)
out.write(encoded.decode('ascii'))
out.write("</base64></value>\n")
def _binary(data):
# decode xml element contents into a Binary structure
value = Binary()
value.decode(data)
return value
WRAPPERS = (DateTime, Binary)
# --------------------------------------------------------------------
# XML parsers
class ExpatParser:
# fast expat parser for Python 2.0 and later.
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
target.xml(encoding, None)
def feed(self, data):
self._parser.Parse(data, False)
def close(self):
try:
parser = self._parser
except AttributeError:
pass
else:
del self._target, self._parser # get rid of circular references
parser.Parse(b"", True) # end of data
# --------------------------------------------------------------------
# XML-RPC marshalling and unmarshalling code
##
# XML-RPC marshaller.
#
# @param encoding Default encoding for 8-bit strings. The default
# value is None (interpreted as UTF-8).
# @see dumps
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, allow_none=False):
self.memo = {}
self.data = None
self.encoding = encoding
self.allow_none = allow_none
dispatch = {}
def dumps(self, values):
out = []
write = out.append
dump = self.__dump
if isinstance(values, Fault):
# fault instance
write("<fault>\n")
dump({'faultCode': values.faultCode,
'faultString': values.faultString},
write)
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")
dump(v, write)
write("</param>\n")
write("</params>\n")
result = "".join(out)
return result
def __dump(self, value, write):
try:
f = self.dispatch[type(value)]
except KeyError:
# check if this object can be marshalled as a structure
if not hasattr(value, '__dict__'):
raise TypeError("cannot marshal %s objects" % type(value))
# check if this class is a sub-class of a basic type,
# because we don't know how to marshal these types
# (e.g. a string sub-class)
for type_ in type(value).__mro__:
if type_ in self.dispatch.keys():
raise TypeError("cannot marshal %s objects" % type(value))
# XXX(twouters): using "_arbitrary_instance" as key as a quick-fix
# for the p3yk merge, this should probably be fixed more neatly.
f = self.dispatch["_arbitrary_instance"]
f(self, value, write)
def dump_nil (self, value, write):
if not self.allow_none:
raise TypeError("cannot marshal None unless allow_none is enabled")
write("<value><nil/></value>")
dispatch[type(None)] = dump_nil
def dump_bool(self, value, write):
write("<value><boolean>")
write(value and "1" or "0")
write("</boolean></value>\n")
dispatch[bool] = dump_bool
def dump_long(self, value, write):
if value > MAXINT or value < MININT:
raise OverflowError("int exceeds XML-RPC limits")
write("<value><int>")
write(str(int(value)))
write("</int></value>\n")
dispatch[int] = dump_long
# backward compatible
dump_int = dump_long
def dump_double(self, value, write):
write("<value><double>")
write(repr(value))
write("</double></value>\n")
dispatch[float] = dump_double
def dump_unicode(self, value, write, escape=escape):
write("<value><string>")
write(escape(value))
write("</string></value>\n")
dispatch[str] = dump_unicode
def dump_bytes(self, value, write):
write("<value><base64>\n")
encoded = base64.encodebytes(value)
write(encoded.decode('ascii'))
write("</base64></value>\n")
dispatch[bytes] = dump_bytes
dispatch[bytearray] = dump_bytes
def dump_array(self, value, write):
i = id(value)
if i in self.memo:
raise TypeError("cannot marshal recursive sequences")
self.memo[i] = None
dump = self.__dump
write("<value><array><data>\n")
for v in value:
dump(v, write)
write("</data></array></value>\n")
del self.memo[i]
dispatch[tuple] = dump_array
dispatch[list] = dump_array
def dump_struct(self, value, write, escape=escape):
i = id(value)
if i in self.memo:
raise TypeError("cannot marshal recursive dictionaries")
self.memo[i] = None
dump = self.__dump
write("<value><struct>\n")
for k, v in value.items():
write("<member>\n")
if not isinstance(k, str):
raise TypeError("dictionary key must be string")
write("<name>%s</name>\n" % escape(k))
dump(v, write)
write("</member>\n")
write("</struct></value>\n")
del self.memo[i]
dispatch[dict] = dump_struct
def dump_datetime(self, value, write):
write("<value><dateTime.iso8601>")
write(_strftime(value))
write("</dateTime.iso8601></value>\n")
dispatch[datetime] = dump_datetime
def dump_instance(self, value, write):
# check for special wrappers
if value.__class__ in WRAPPERS:
self.write = write
value.encode(self)
del self.write
else:
# store instance attributes as a struct (really?)
self.dump_struct(value.__dict__, write)
dispatch[DateTime] = dump_instance
dispatch[Binary] = dump_instance
# XXX(twouters): using "_arbitrary_instance" as key as a quick-fix
# for the p3yk merge, this should probably be fixed more neatly.
dispatch["_arbitrary_instance"] = dump_instance
##
# XML-RPC unmarshaller.
#
# @see loads
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, use_datetime=False, use_builtin_types=False):
self._type = None
self._stack = []
self._marks = []
self._data = []
self._value = False
self._methodname = None
self._encoding = "utf-8"
self.append = self._stack.append
self._use_datetime = use_builtin_types or use_datetime
self._use_bytes = use_builtin_types
def close(self):
# return response tuple and target method
if self._type is None or self._marks:
raise ResponseError()
if self._type == "fault":
raise 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 ':' in tag:
tag = tag.split(':')[-1]
if tag == "array" or tag == "struct":
self._marks.append(len(self._stack))
self._data = []
if self._value and tag not in self.dispatch:
raise ResponseError("unknown tag %r" % tag)
self._value = (tag == "value")
def data(self, text):
self._data.append(text)
def end(self, tag):
# call the appropriate end tag handler
try:
f = self.dispatch[tag]
except KeyError:
if ':' not in tag:
return # unknown tag ?
try:
f = self.dispatch[tag.split(':')[-1]]
except KeyError:
return # unknown tag ?
return f(self, "".join(self._data))
#
# accelerator support
def end_dispatch(self, tag, data):
# dispatch data
try:
f = self.dispatch[tag]
except KeyError:
if ':' not in tag:
return # unknown tag ?
try:
f = self.dispatch[tag.split(':')[-1]]
except KeyError:
return # unknown tag ?
return f(self, data)
#
# element decoders
dispatch = {}
def end_nil (self, data):
self.append(None)
self._value = 0
dispatch["nil"] = end_nil
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["i1"] = end_int
dispatch["i2"] = end_int
dispatch["i4"] = end_int
dispatch["i8"] = end_int
dispatch["int"] = end_int
dispatch["biginteger"] = end_int
def end_double(self, data):
self.append(float(data))
self._value = 0
dispatch["double"] = end_double
dispatch["float"] = end_double
def end_bigdecimal(self, data):
self.append(Decimal(data))
self._value = 0
dispatch["bigdecimal"] = end_bigdecimal
def end_string(self, data):
if self._encoding:
data = data.decode(self._encoding)
self.append(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.pop()
# 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.pop()
# map structs to Python dictionaries
dict = {}
items = self._stack[mark:]
for i in range(0, len(items), 2):
dict[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.encode("ascii"))
if self._use_bytes:
value = value.data
self.append(value)
self._value = 0
dispatch["base64"] = end_base64
def end_dateTime(self, data):
value = DateTime()
value.decode(data)
if self._use_datetime:
value = _datetime_type(data)
self.append(value)
dispatch["dateTime.iso8601"] = end_dateTime
def end_value(self, data):
# if we stumble upon a 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 = data.decode(self._encoding)
self._methodname = data
self._type = "methodName" # no params
dispatch["methodName"] = end_methodName
## Multicall support
#
class _MultiCallMethod:
# some lesser magic to store calls made to a MultiCall object
# for batch execution
def __init__(self, call_list, name):
self.__call_list = call_list
self.__name = name
def __getattr__(self, name):
return _MultiCallMethod(self.__call_list, "%s.%s" % (self.__name, name))
def __call__(self, *args):
self.__call_list.append((self.__name, args))
class MultiCallIterator:
"""Iterates over the results of a multicall. Exceptions are
raised in response to xmlrpc faults."""
def __init__(self, results):
self.results = results
def __getitem__(self, i):
item = self.results[i]
if isinstance(item, dict):
raise Fault(item['faultCode'], item['faultString'])
elif isinstance(item, list):
return item[0]
else:
raise ValueError("unexpected type in multicall result")
class MultiCall:
"""server -> an object used to boxcar method calls
server should be a ServerProxy object.
Methods can be added to the MultiCall using normal
method call syntax e.g.:
multicall = MultiCall(server_proxy)
multicall.add(2,3)
multicall.get_address("Guido")
To execute the multicall, call the MultiCall object e.g.:
add_result, address = multicall()
"""
def __init__(self, server):
self.__server = server
self.__call_list = []
def __repr__(self):
return "<%s at %#x>" % (self.__class__.__name__, id(self))
def __getattr__(self, name):
return _MultiCallMethod(self.__call_list, name)
def __call__(self):
marshalled_list = []
for name, args in self.__call_list:
marshalled_list.append({'methodName' : name, 'params' : args})
return MultiCallIterator(self.__server.system.multicall(marshalled_list))
# --------------------------------------------------------------------
# convenience functions
FastMarshaller = FastParser = FastUnmarshaller = None
##
# Create a parser object, and connect it to an unmarshalling instance.
# This function picks the fastest available XML parser.
#
# return A (parser, unmarshaller) tuple.
def getparser(use_datetime=False, use_builtin_types=False):
"""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:
if use_builtin_types:
mkdatetime = _datetime_type
mkbytes = base64.decodebytes
elif use_datetime:
mkdatetime = _datetime_type
mkbytes = _binary
else:
mkdatetime = _datetime
mkbytes = _binary
target = FastUnmarshaller(True, False, mkbytes, mkdatetime, Fault)
parser = FastParser(target)
else:
target = Unmarshaller(use_datetime=use_datetime, use_builtin_types=use_builtin_types)
if FastParser:
parser = FastParser(target)
else:
parser = ExpatParser(target)
return parser, target
##
# Convert a Python tuple or a Fault instance to an XML-RPC packet.
#
# @def dumps(params, **options)
# @param params A tuple or Fault instance.
# @keyparam methodname If given, create a methodCall request for
# this method name.
# @keyparam methodresponse If given, create a methodResponse packet.
# If used with a tuple, the tuple must be a singleton (that is,
# it must contain exactly one element).
# @keyparam encoding The packet encoding.
# @return A string containing marshalled data.
def dumps(params, methodname=None, methodresponse=None, encoding=None,
allow_none=False):
"""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 byte strings in the data structure are assumed to use the
packet encoding. Unicode strings are automatically converted,
where necessary.
"""
assert isinstance(params, (tuple, Fault)), "argument must be tuple or Fault instance"
if isinstance(params, Fault):
methodresponse = 1
elif methodresponse and isinstance(params, tuple):
assert len(params) == 1, "response tuple must be a singleton"
if not encoding:
encoding = "utf-8"
if FastMarshaller:
m = FastMarshaller(encoding)
else:
m = Marshaller(encoding, allow_none)
data = m.dumps(params)
if encoding != "utf-8":
xmlheader = "<?xml version='1.0' encoding='%s'?>\n" % str(encoding)
else:
xmlheader = "<?xml version='1.0'?>\n" # utf-8 is default
# standard XML-RPC wrappings
if methodname:
# a method call
data = (
xmlheader,
"<methodCall>\n"
"<methodName>", escape(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 "".join(data)
##
# Convert an XML-RPC packet to a Python object. If the XML-RPC packet
# represents a fault condition, this function raises a Fault exception.
#
# @param data An XML-RPC packet, given as an 8-bit string.
# @return A tuple containing the unpacked data, and the method name
# (None if not present).
# @see Fault
def loads(data, use_datetime=False, use_builtin_types=False):
"""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.
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