" % id(self)
def __int__(self):
return self.value
def __nonzero__(self):
return self.value
mod_dict['True'] = Boolean(1)
mod_dict['False'] = Boolean(0)
##
# Map true or false value to XML-RPC boolean values.
#
# @def boolean(value)
# @param value A boolean value. Any true value is mapped to True,
# all other values are mapped to False.
# @return xmlrpclib.True or xmlrpclib.False.
# @see Boolean
# @see True
# @see False
def boolean(value, _truefalse=(False, True)):
"""Convert any Python value to XML-RPC 'boolean'."""
return _truefalse[operator.truth(value)]
del modules, mod_dict
##
# Wrapper for XML-RPC DateTime values. This converts a time value to
# the format used by XML-RPC.
#
# The value can be given as a string in the format
# "yyyymmddThh:mm:ss", as a 9-item time tuple (as returned by
# time.localtime()), or an integer value (as returned by time.time()).
# The wrapper uses time.localtime() to convert an integer to a time
# tuple.
#
# @param value The time, given as an ISO 8601 string, a time
# tuple, or a integer time value.
def _strftime(value):
if datetime:
if isinstance(value, datetime.datetime):
return "%04d%02d%02dT%02d:%02d:%02d" % (
value.year, value.month, value.day,
value.hour, value.minute, value.second)
if not isinstance(value, (TupleType, 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, StringType):
self.value = value
else:
self.value = _strftime(value)
def make_comparable(self, other):
if isinstance(other, DateTime):
s = self.value
o = other.value
elif datetime and isinstance(other, datetime.datetime):
s = self.value
o = other.strftime("%Y%m%dT%H:%M:%S")
elif isinstance(other, (str, unicode)):
s = self.value
o = other
elif hasattr(other, "timetuple"):
s = self.timetuple()
o = other.timetuple()
else:
otype = (hasattr(other, "__class__")
and other.__class__.__name__
or type(other))
raise TypeError("Can't compare %s and %s" %
(self.__class__.__name__, otype))
return s, o
def __lt__(self, other):
s, o = self.make_comparable(other)
return s < o
def __le__(self, other):
s, o = self.make_comparable(other)
return s <= o
def __gt__(self, other):
s, o = self.make_comparable(other)
return s > o
def __ge__(self, other):
s, o = self.make_comparable(other)
return s >= o
def __eq__(self, other):
s, o = self.make_comparable(other)
return s == o
def __ne__(self, other):
s, o = self.make_comparable(other)
return s != o
def timetuple(self):
return time.strptime(self.value, "%Y%m%dT%H:%M:%S")
def __cmp__(self, other):
s, o = self.make_comparable(other)
return cmp(s, o)
##
# Get date/time value.
#
# @return Date/time value, as an ISO 8601 string.
def __str__(self):
return self.value
def __repr__(self):
return "" % (repr(self.value), id(self))
def decode(self, data):
data = str(data)
self.value = string.strip(data)
def encode(self, out):
out.write("")
out.write(self.value)
out.write("\n")
def _datetime(data):
# decode xml element contents into a DateTime structure.
value = DateTime()
value.decode(data)
return value
def _datetime_type(data):
t = time.strptime(data, "%Y%m%dT%H:%M:%S")
return datetime.datetime(*tuple(t)[:6])
##
# 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.
import base64
try:
import cStringIO as StringIO
except ImportError:
import StringIO
class Binary:
"""Wrapper for binary data."""
def __init__(self, data=None):
self.data = data
##
# Get buffer contents.
#
# @return Buffer contents, as an 8-bit string.
def __str__(self):
return self.data or ""
def __cmp__(self, other):
if isinstance(other, Binary):
other = other.data
return cmp(self.data, other)
def decode(self, data):
self.data = base64.decodestring(data)
def encode(self, out):
out.write("\n")
base64.encode(StringIO.StringIO(self.data), out)
out.write("\n")
def _binary(data):
# decode xml element contents into a Binary structure
value = Binary()
value.decode(data)
return value
WRAPPERS = (DateTime, Binary)
if not _bool_is_builtin:
WRAPPERS = WRAPPERS + (Boolean,)
# --------------------------------------------------------------------
# XML parsers
try:
# optional xmlrpclib accelerator
import _xmlrpclib
FastParser = _xmlrpclib.Parser
FastUnmarshaller = _xmlrpclib.Unmarshaller
except (AttributeError, ImportError):
FastParser = FastUnmarshaller = None
try:
import _xmlrpclib
FastMarshaller = _xmlrpclib.Marshaller
except (AttributeError, ImportError):
FastMarshaller = None
try:
from xml.parsers import expat
if not hasattr(expat, "ParserCreate"):
raise ImportError
except ImportError:
ExpatParser = None # expat not available
else:
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
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 the slowest parser.
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.handle_cdata = 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
##
# 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=0):
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("\n")
dump({'faultCode': values.faultCode,
'faultString': values.faultString},
write)
write("\n")
else:
# parameter block
# FIXME: the xml-rpc specification allows us to leave out
# the entire 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("\n")
for v in values:
write("\n")
dump(v, write)
write("\n")
write("\n")
result = string.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
try:
value.__dict__
except:
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)
f = self.dispatch[InstanceType]
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("")
dispatch[NoneType] = dump_nil
def dump_int(self, value, write):
# in case ints are > 32 bits
if value > MAXINT or value < MININT:
raise OverflowError, "int exceeds XML-RPC limits"
write("")
write(str(value))
write("\n")
dispatch[IntType] = dump_int
if _bool_is_builtin:
def dump_bool(self, value, write):
write("")
write(value and "1" or "0")
write("\n")
dispatch[bool] = dump_bool
def dump_long(self, value, write):
if value > MAXINT or value < MININT:
raise OverflowError, "long int exceeds XML-RPC limits"
write("")
write(str(int(value)))
write("\n")
dispatch[LongType] = dump_long
def dump_double(self, value, write):
write("")
write(repr(value))
write("\n")
dispatch[FloatType] = dump_double
def dump_string(self, value, write, escape=escape):
write("")
write(escape(value))
write("\n")
dispatch[StringType] = dump_string
if unicode:
def dump_unicode(self, value, write, escape=escape):
value = value.encode(self.encoding)
write("")
write(escape(value))
write("\n")
dispatch[UnicodeType] = dump_unicode
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("\n")
for v in value:
dump(v, write)
write("\n")
del self.memo[i]
dispatch[TupleType] = dump_array
dispatch[ListType] = 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("\n")
for k, v in value.items():
write("\n")
if type(k) is not StringType:
if unicode and type(k) is UnicodeType:
k = k.encode(self.encoding)
else:
raise TypeError, "dictionary key must be string"
write("%s\n" % escape(k))
dump(v, write)
write("\n")
write("\n")
del self.memo[i]
dispatch[DictType] = dump_struct
if datetime:
def dump_datetime(self, value, write):
write("")
write(_strftime(value))
write("\n")
dispatch[datetime.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[InstanceType] = 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=0):
self._type = None
self._stack = []
self._marks = []
self._data = []
self._methodname = None
self._encoding = "utf-8"
self.append = self._stack.append
self._use_datetime = use_datetime
if use_datetime and not datetime:
raise ValueError, "the datetime module is not available"
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 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_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["i4"] = end_int
dispatch["i8"] = 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.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[_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)
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 = _decode(data, 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 type(item) == type({}):
raise Fault(item['faultCode'], item['faultString'])
elif type(item) == type([]):
return item[0]
else:
raise ValueError,\
"unexpected type in multicall result"
class MultiCall:
"""server -> a 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 "" % id(self)
__str__ = __repr__
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
##
# 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=0):
"""getparser() -> parser, unmarshaller
Create an instance of the fastest available parser, and attach it
to an unmarshalling object. Return both objects.
"""
if use_datetime and not datetime:
raise ValueError, "the datetime module is not available"
if FastParser and FastUnmarshaller:
if use_datetime:
mkdatetime = _datetime_type
else:
mkdatetime = _datetime
target = FastUnmarshaller(True, False, _binary, mkdatetime, Fault)
parser = FastParser(target)
else:
target = Unmarshaller(use_datetime=use_datetime)
if FastParser:
parser = FastParser(target)
elif ExpatParser:
parser = ExpatParser(target)
else:
parser = SlowParser(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=0):
"""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"
if FastMarshaller:
m = FastMarshaller(encoding)
else:
m = Marshaller(encoding, allow_none)
data = m.dumps(params)
if encoding != "utf-8":
xmlheader = "\n" % str(encoding)
else:
xmlheader = "\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,
"\n"
"", methodname, "\n",
data,
"\n"
)
elif methodresponse:
# a method response, or a fault structure
data = (
xmlheader,
"\n",
data,
"\n"
)
else:
return data # return as is
return string.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=0):
"""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(use_datetime=use_datetime)
p.feed(data)
p.close()
return u.close(), u.getmethodname()
##
# Encode a string using the gzip content encoding such as specified by the
# Content-Encoding: gzip
# in the HTTP header, as described in RFC 1952
#
# @param data the unencoded data
# @return the encoded data
def gzip_encode(data):
"""data -> gzip encoded data
Encode data using the gzip content encoding as described in RFC 1952
"""
if not gzip:
raise NotImplementedError
f = StringIO.StringIO()
gzf = gzip.GzipFile(mode="wb", fileobj=f, compresslevel=1)
gzf.write(data)
gzf.close()
encoded = f.getvalue()
f.close()
return encoded
##
# Decode a string using the gzip content encoding such as specified by the
# Content-Encoding: gzip
# in the HTTP header, as described in RFC 1952
#
# @param data The encoded data
# @keyparam max_decode Maximum bytes to decode (20MB default), use negative
# values for unlimited decoding
# @return the unencoded data
# @raises ValueError if data is not correctly coded.
# @raises ValueError if max gzipped payload length exceeded
def gzip_decode(data, max_decode=20971520):
"""gzip encoded data -> unencoded data
Decode data using the gzip content encoding as described in RFC 1952
"""
if not gzip:
raise NotImplementedError
f = StringIO.StringIO(data)
gzf = gzip.GzipFile(mode="rb", fileobj=f)
try:
if max_decode < 0: # no limit
decoded = gzf.read()
else:
decoded = gzf.read(max_decode + 1)
except IOError:
raise ValueError("invalid data")
f.close()
gzf.close()
if max_decode >= 0 and len(decoded) > max_decode:
raise ValueError("max gzipped payload length exceeded")
return decoded
##
# Return a decoded file-like object for the gzip encoding
# as described in RFC 1952.
#
# @param response A stream supporting a read() method
# @return a file-like object that the decoded data can be read() from
class GzipDecodedResponse(gzip.GzipFile if gzip else object):
"""a file-like object to decode a response encoded with the gzip
method, as described in RFC 1952.
"""
def __init__(self, response):
#response doesn't support tell() and read(), required by
#GzipFile
if not gzip:
raise NotImplementedError
self.stringio = StringIO.StringIO(response.read())
gzip.GzipFile.__init__(self, mode="rb", fileobj=self.stringio)
def close(self):
gzip.GzipFile.close(self)
self.stringio.close()
# --------------------------------------------------------------------
# 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)
##
# Standard transport class for XML-RPC over HTTP.
#
# You can create custom transports by subclassing this method, and
# overriding selected methods.
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__
#if true, we'll request gzip encoding
accept_gzip_encoding = True
# if positive, encode request using gzip if it exceeds this threshold
# note that many server will get confused, so only use it if you know
# that they can decode such a request
encode_threshold = None #None = don't encode
def __init__(self, use_datetime=0):
self._use_datetime = use_datetime
self._connection = (None, None)
self._extra_headers = []
##
# Send a complete request, and parse the response.
# Retry request if a cached connection has disconnected.
#
# @param host Target host.
# @param handler Target PRC handler.
# @param request_body XML-RPC request body.
# @param verbose Debugging flag.
# @return Parsed response.
def request(self, host, handler, request_body, verbose=0):
#retry request once if cached connection has gone cold
for i in (0, 1):
try:
return self.single_request(host, handler, request_body, verbose)
except socket.error, e:
if i or e.errno not in (errno.ECONNRESET, errno.ECONNABORTED, errno.EPIPE):
raise
except httplib.BadStatusLine: #close after we sent request
if i:
raise
##
# Send a complete request, and parse the response.
#
# @param host Target host.
# @param handler Target PRC handler.
# @param request_body XML-RPC request body.
# @param verbose Debugging flag.
# @return Parsed response.
def single_request(self, host, handler, request_body, verbose=0):
# issue XML-RPC request
h = self.make_connection(host)
if verbose:
h.set_debuglevel(1)
try:
self.send_request(h, handler, request_body)
self.send_host(h, host)
self.send_user_agent(h)
self.send_content(h, request_body)
response = h.getresponse(buffering=True)
if response.status == 200:
self.verbose = verbose
return self.parse_response(response)
except Fault:
raise
except Exception:
# All unexpected errors leave connection in
# a strange state, so we clear it.
self.close()
raise
#discard any response data and raise exception
if (response.getheader("content-length", 0)):
response.read()
raise ProtocolError(
host + handler,
response.status, response.reason,
response.msg,
)
##
# Create parser.
#
# @return A 2-tuple containing a parser and a unmarshaller.
def getparser(self):
# get parser and unmarshaller
return getparser(use_datetime=self._use_datetime)
##
# Get authorization info from host parameter
# Host may be a string, or a (host, x509-dict) tuple; if a string,
# it is checked for a "user:pw@host" format, and a "Basic
# Authentication" header is added if appropriate.
#
# @param host Host descriptor (URL or (URL, x509 info) tuple).
# @return A 3-tuple containing (actual host, extra headers,
# x509 info). The header and x509 fields may be None.
def get_host_info(self, host):
x509 = {}
if isinstance(host, TupleType):
host, x509 = host
import urllib
auth, host = urllib.splituser(host)
if auth:
import base64
auth = base64.encodestring(urllib.unquote(auth))
auth = string.join(string.split(auth), "") # get rid of whitespace
extra_headers = [
("Authorization", "Basic " + auth)
]
else:
extra_headers = None
return host, extra_headers, x509
##
# Connect to server.
#
# @param host Target host.
# @return A connection handle.
def make_connection(self, host):
#return an existing connection if possible. This allows
#HTTP/1.1 keep-alive.
if self._connection and host == self._connection[0]:
return self._connection[1]
# create a HTTP connection object from a host descriptor
chost, self._extra_headers, x509 = self.get_host_info(host)
#store the host argument along with the connection object
self._connection = host, httplib.HTTPConnection(chost)
return self._connection[1]
##
# Clear any cached connection object.
# Used in the event of socket errors.
#
def close(self):
if self._connection[1]:
self._connection[1].close()
self._connection = (None, None)
##
# Send request header.
#
# @param connection Connection handle.
# @param handler Target RPC handler.
# @param request_body XML-RPC body.
def send_request(self, connection, handler, request_body):
if (self.accept_gzip_encoding and gzip):
connection.putrequest("POST", handler, skip_accept_encoding=True)
connection.putheader("Accept-Encoding", "gzip")
else:
connection.putrequest("POST", handler)
##
# Send host name.
#
# @param connection Connection handle.
# @param host Host name.
#
# Note: This function doesn't actually add the "Host"
# header anymore, it is done as part of the connection.putrequest() in
# send_request() above.
def send_host(self, connection, host):
extra_headers = self._extra_headers
if extra_headers:
if isinstance(extra_headers, DictType):
extra_headers = extra_headers.items()
for key, value in extra_headers:
connection.putheader(key, value)
##
# Send user-agent identifier.
#
# @param connection Connection handle.
def send_user_agent(self, connection):
connection.putheader("User-Agent", self.user_agent)
##
# Send request body.
#
# @param connection Connection handle.
# @param request_body XML-RPC request body.
def send_content(self, connection, request_body):
connection.putheader("Content-Type", "text/xml")
#optionally encode the request
if (self.encode_threshold is not None and
self.encode_threshold < len(request_body) and
gzip):
connection.putheader("Content-Encoding", "gzip")
request_body = gzip_encode(request_body)
connection.putheader("Content-Length", str(len(request_body)))
connection.endheaders(request_body)
##
# Parse response.
#
# @param file Stream.
# @return Response tuple and target method.
def parse_response(self, response):
# read response data from httpresponse, and parse it
# Check for new http response object, else it is a file object
if hasattr(response,'getheader'):
if response.getheader("Content-Encoding", "") == "gzip":
stream = GzipDecodedResponse(response)
else:
stream = response
else:
stream = response
p, u = self.getparser()
while 1:
data = stream.read(1024)
if not data:
break
if self.verbose:
print "body:", repr(data)
p.feed(data)
if stream is not response:
stream.close()
p.close()
return u.close()
##
# Standard transport class for XML-RPC over HTTPS.
class SafeTransport(Transport):
"""Handles an HTTPS transaction to an XML-RPC server."""
def __init__(self, use_datetime=0, context=None):
Transport.__init__(self, use_datetime=use_datetime)
self.context = context
# FIXME: mostly untested
def make_connection(self, host):
if self._connection and host == self._connection[0]:
return self._connection[1]
# create a HTTPS connection object from a host descriptor
# host may be a string, or a (host, x509-dict) tuple
try:
HTTPS = httplib.HTTPSConnection
except AttributeError:
raise NotImplementedError(
"your version of httplib doesn't support HTTPS"
)
else:
chost, self._extra_headers, x509 = self.get_host_info(host)
self._connection = host, HTTPS(chost, None, context=self.context, **(x509 or {}))
return self._connection[1]
##
# Standard server proxy. This class establishes a virtual connection
# to an XML-RPC server.
#
# This class is available as ServerProxy and Server. New code should
# use ServerProxy, to avoid confusion.
#
# @def ServerProxy(uri, **options)
# @param uri The connection point on the server.
# @keyparam transport A transport factory, compatible with the
# standard transport class.
# @keyparam encoding The default encoding used for 8-bit strings
# (default is UTF-8).
# @keyparam verbose Use a true value to enable debugging output.
# (printed to standard output).
# @see Transport
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,
allow_none=0, use_datetime=0, context=None):
# establish a "logical" server connection
if isinstance(uri, unicode):
uri = uri.encode('ISO-8859-1')
# 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(use_datetime=use_datetime, context=context)
else:
transport = Transport(use_datetime=use_datetime)
self.__transport = transport
self.__encoding = encoding
self.__verbose = verbose
self.__allow_none = allow_none
def __close(self):
self.__transport.close()
def __request(self, methodname, params):
# call a method on the remote server
request = dumps(params, methodname, encoding=self.__encoding,
allow_none=self.__allow_none)
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 (
"" %
(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)
def __call__(self, attr):
"""A workaround to get special attributes on the ServerProxy
without interfering with the magic __getattr__
"""
if attr == "close":
return self.__close
elif attr == "transport":
return self.__transport
raise AttributeError("Attribute %r not found" % (attr,))
# 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://time.xmlrpc.com/RPC2")
print server
try:
print server.currentTime.getCurrentTime()
except Error, v:
print "ERROR", v
multi = MultiCall(server)
multi.currentTime.getCurrentTime()
multi.currentTime.getCurrentTime()
try:
for response in multi():
print response
except Error, v:
print "ERROR", v