Completed
Push — master ( 1cc082...22211d )
by Roy
01:17
created

WSGIXMLRPCApplication.handle_POST()   B

Complexity

Conditions 3

Size

Total Lines 36

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 3
c 1
b 0
f 0
dl 0
loc 36
rs 8.8571
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#   Copyright (c) 2006-2007 Open Source Applications Foundation
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#
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#   Licensed under the Apache License, Version 2.0 (the "License");
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#   you may not use this file except in compliance with the License.
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#   You may obtain a copy of the License at
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#
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#       http://www.apache.org/licenses/LICENSE-2.0
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#
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#   Unless required by applicable law or agreed to in writing, software
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#   distributed under the License is distributed on an "AS IS" BASIS,
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#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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#   See the License for the specific language governing permissions and
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#   limitations under the License.
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#
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#   Origin: https://code.google.com/p/wsgi-xmlrpc/
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from six.moves.xmlrpc_server import SimpleXMLRPCDispatcher
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import logging
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logger = logging.getLogger(__name__)
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class WSGIXMLRPCApplication(object):
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    """Application to handle requests to the XMLRPC service"""
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    def __init__(self, instance=None, methods=None):
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        """Create windmill xmlrpc dispatcher"""
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        if methods is None:
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            methods = []
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        try:
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            self.dispatcher = SimpleXMLRPCDispatcher(allow_none=True, encoding=None)
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        except TypeError:
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            # python 2.4
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            self.dispatcher = SimpleXMLRPCDispatcher()
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        if instance is not None:
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            self.dispatcher.register_instance(instance)
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        for method in methods:
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            self.dispatcher.register_function(method)
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        self.dispatcher.register_introspection_functions()
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    def register_instance(self, instance):
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        return self.dispatcher.register_instance(instance)
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    def register_function(self, function, name=None):
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        return self.dispatcher.register_function(function, name)
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    def handler(self, environ, start_response):
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        """XMLRPC service for windmill browser core to communicate with"""
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        if environ['REQUEST_METHOD'] == 'POST':
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            return self.handle_POST(environ, start_response)
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        else:
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            start_response("400 Bad request", [('Content-Type', 'text/plain')])
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            return ['']
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    def handle_POST(self, environ, start_response):
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        """Handles the HTTP POST request.
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        Attempts to interpret all HTTP POST requests as XML-RPC calls,
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        which are forwarded to the server's _dispatch method for handling.
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        Most code taken from SimpleXMLRPCServer with modifications for wsgi and my custom dispatcher.
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        """
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        try:
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            # Get arguments by reading body of request.
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            # We read this in chunks to avoid straining
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            # socket.read(); around the 10 or 15Mb mark, some platforms
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            # begin to have problems (bug #792570).
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            length = int(environ['CONTENT_LENGTH'])
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            data = environ['wsgi.input'].read(length)
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            # In previous versions of SimpleXMLRPCServer, _dispatch
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            # could be overridden in this class, instead of in
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            # SimpleXMLRPCDispatcher. To maintain backwards compatibility,
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            # check to see if a subclass implements _dispatch and
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            # using that method if present.
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            response = self.dispatcher._marshaled_dispatch(
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                data, getattr(self.dispatcher, '_dispatch', None)
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            )
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            response += b'\n'
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        except Exception as e:  # This should only happen if the module is buggy
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            # internal error, report as HTTP server error
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            logger.exception(e)
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            start_response("500 Server error", [('Content-Type', 'text/plain')])
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            return []
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        else:
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            # got a valid XML RPC response
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            start_response("200 OK", [('Content-Type', 'text/xml'), ('Content-Length', str(len(response)),)])
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            return [response]
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    def __call__(self, environ, start_response):
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        return self.handler(environ, start_response)
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