28 lines
986 B
Python
28 lines
986 B
Python
import logging
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from StringIO import StringIO
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import zlib
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class UnzipRequestMiddleware(object):
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"""A middleware that unzips POSTed data.
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For this middleware to kick in, the client must provide a value
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for the ``Content-Encoding`` header. The only accepted value is
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``gzip``. Any other value is ignored.
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"""
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def __init__(self, app):
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self.app = app
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def __call__(self, environ, start_response):
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encoding = environ.get('HTTP_CONTENT_ENCODING')
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if encoding == 'gzip':
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data = environ['wsgi.input'].read()
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try:
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uncompressed = zlib.decompress(data, 31)
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environ['wsgi.input'] = StringIO(uncompressed)
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environ['CONTENT_LENGTH'] = len(uncompressed)
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except zlib.error:
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logging.warning(u"Could not decompress request data.", exc_info=True)
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environ['wsgi.input'] = StringIO(data)
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return self.app(environ, start_response)
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