| # |
| # 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 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) |
| # 2001-10-02 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) |
| # |
| # 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. |
| # -------------------------------------------------------------------- |
| |
| # |
| # things to look into some day: |
| |
| # TODO: sort out True/False/boolean issues for Python 2.3 |
| |
| """ |
| 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 * |
| |
| # -------------------------------------------------------------------- |
| # Internal stuff |
| |
| try: |
| unicode |
| except NameError: |
| unicode = None # unicode support not available |
| |
| try: |
| _bool_is_builtin = False.__class__.__name__ == "bool" |
| except NameError: |
| _bool_is_builtin = 0 |
| |
| 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, ">", ">",) |
| |
| 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__ = "1.0.1" |
| |
| # xmlrpc integer limits |
| MAXINT = 2L**31-1 |
| MININT = -2L**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.""" |
| def __str__(self): |
| return repr(self) |
| |
| ## |
| # 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 ( |
| "<ProtocolError for %s: %s %s>" % |
| (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 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 ( |
| "<Fault %s: %s>" % |
| (self.faultCode, repr(self.faultString)) |
| ) |
| |
| # -------------------------------------------------------------------- |
| # Special values |
| |
| ## |
| # Wrapper for XML-RPC boolean values. Use the xmlrpclib.True and |
| # xmlrpclib.False constants, or the xmlrpclib.boolean() function, to |
| # generate boolean XML-RPC values. |
| # |
| # @param value A boolean value. Any true value is interpreted as True, |
| # all other values are interpreted as False. |
| |
| if _bool_is_builtin: |
| boolean = Boolean = bool |
| # to avoid breaking code which references xmlrpclib.{True,False} |
| True, False = True, False |
| else: |
| 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) |
| |
| ## |
| # 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)] |
| |
| ## |
| # Wrapper for XML-RPC DateTime values. This converts a time value to |
| # the format used by XML-RPC. |
| # <p> |
| # 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. |
| |
| 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) |
| |
| ## |
| # Get date/time value. |
| # |
| # @return Date/time value, as an ISO 8601 string. |
| |
| def __str__(self): |
| return self.value |
| |
| def __repr__(self): |
| return "<DateTime %s at %x>" % (repr(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): |
| # decode xml element contents into a DateTime structure. |
| value = DateTime() |
| value.decode(data) |
| return value |
| |
| ## |
| # 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("<value><base64>\n") |
| base64.encode(StringIO.StringIO(self.data), out) |
| 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) |
| if not _bool_is_builtin: |
| WRAPPERS = WRAPPERS + (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 |
| |
| try: |
| import _xmlrpclib |
| FastMarshaller = _xmlrpclib.Marshaller |
| except (AttributeError, ImportError): |
| FastMarshaller = 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): |
| 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 |
| except ImportError: |
| ExpatParser = None # expat not available |
| else: |
| class ExpatParser: |
| # fast expat parser for Python 2.0 and later. 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.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("<fault>\n") |
| dump(vars(values), 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 = string.join(out, "") |
| return result |
| |
| def __dump(self, value, write): |
| try: |
| f = self.dispatch[type(value)] |
| except KeyError: |
| raise TypeError, "cannot marshal %s objects" % type(value) |
| else: |
| 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[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("<value><int>") |
| write(str(value)) |
| write("</int></value>\n") |
| dispatch[IntType] = dump_int |
| |
| if _bool_is_builtin: |
| 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, "long int exceeds XML-RPC limits" |
| write("<value><int>") |
| write(str(int(value))) |
| write("</int></value>\n") |
| dispatch[LongType] = dump_long |
| |
| def dump_double(self, value, write): |
| write("<value><double>") |
| write(repr(value)) |
| write("</double></value>\n") |
| dispatch[FloatType] = dump_double |
| |
| def dump_string(self, value, write, escape=escape): |
| write("<value><string>") |
| write(escape(value)) |
| write("</string></value>\n") |
| dispatch[StringType] = dump_string |
| |
| if unicode: |
| def dump_unicode(self, value, write, escape=escape): |
| value = value.encode(self.encoding) |
| write("<value><string>") |
| write(escape(value)) |
| write("</string></value>\n") |
| dispatch[UnicodeType] = dump_unicode |
| |
| def dump_array(self, value, write): |
| i = id(value) |
| if self.memo.has_key(i): |
| 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[TupleType] = dump_array |
| dispatch[ListType] = dump_array |
| |
| def dump_struct(self, value, write, escape=escape): |
| i = id(value) |
| if self.memo.has_key(i): |
| raise TypeError, "cannot marshal recursive dictionaries" |
| self.memo[i] = None |
| dump = self.__dump |
| write("<value><struct>\n") |
| for k in value.keys(): |
| write("<member>\n") |
| if type(k) is not StringType: |
| raise TypeError, "dictionary key must be string" |
| write("<name>%s</name>\n" % escape(k)) |
| dump(value[k], write) |
| write("</member>\n") |
| write("</struct></value>\n") |
| del self.memo[i] |
| dispatch[DictType] = dump_struct |
| |
| 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): |
| 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 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["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) |
| 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 |
| |
| |
| # -------------------------------------------------------------------- |
| # 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(): |
| """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, Fault) |
| 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 |
| |
| ## |
| # 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 = "<?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 |
| 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, "") |
| |
| ## |
| # 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 the unpacked data, and the method name |
| # (None if not present). |
| # @see Fault |
| |
| 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. |
| """ |
| import sys |
| 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) |
| |
| ## |
| # Standard transport class for XML-RPC over HTTP. |
| # <p> |
| # 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__ |
| |
| ## |
| # 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 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 |
| |
| try: |
| sock = h._conn.sock |
| except AttributeError: |
| sock = None |
| |
| return self._parse_response(h.getfile(), sock) |
| |
| ## |
| # Create parser. |
| # |
| # @return A 2-tuple containing a parser and a unmarshaller. |
| |
| def getparser(self): |
| # get parser and unmarshaller |
| return getparser() |
| |
| ## |
| # 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): |
| # create a HTTP connection object from a host descriptor |
| import httplib |
| host, extra_headers, x509 = self.get_host_info(host) |
| return httplib.HTTP(host) |
| |
| ## |
| # 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): |
| connection.putrequest("POST", handler) |
| |
| ## |
| # Send host name. |
| # |
| # @param connection Connection handle. |
| # @param host Host name. |
| |
| def send_host(self, connection, host): |
| host, extra_headers, x509 = self.get_host_info(host) |
| connection.putheader("Host", host) |
| 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") |
| connection.putheader("Content-Length", str(len(request_body))) |
| connection.endheaders() |
| if request_body: |
| connection.send(request_body) |
| |
| ## |
| # Parse response. |
| # |
| # @param file Stream. |
| # @return Response tuple and target method. |
| |
| def parse_response(self, file): |
| # compatibility interface |
| return self._parse_response(file, None) |
| |
| ## |
| # Parse response (alternate interface). This is similar to the |
| # parse_response method, but also provides direct access to the |
| # underlying socket object (where available). |
| # |
| # @param file Stream. |
| # @param sock Socket handle (or None, if the socket object |
| # could not be accessed). |
| # @return Response tuple and target method. |
| |
| def _parse_response(self, file, sock): |
| # read response from input file/socket, and parse it |
| |
| p, u = self.getparser() |
| |
| while 1: |
| if sock: |
| response = sock.recv(1024) |
| else: |
| response = file.read(1024) |
| if not response: |
| break |
| if self.verbose: |
| print "body:", repr(response) |
| p.feed(response) |
| |
| file.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.""" |
| |
| # FIXME: mostly untested |
| |
| 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 |
| host, extra_headers, x509 = self.get_host_info(host) |
| try: |
| HTTPS = httplib.HTTPS |
| except AttributeError: |
| raise NotImplementedError( |
| "your version of httplib doesn't support HTTPS" |
| ) |
| else: |
| return HTTPS(host, None, **(x509 or {})) |
| |
| ## |
| # Standard server proxy. This class establishes a virtual connection |
| # to an XML-RPC server. |
| # <p> |
| # 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): |
| # 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 |
| self.__allow_none = allow_none |
| |
| 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 ( |
| "<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 |