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- # -*- coding: utf-8 -*-
- """
- werkzeug.contrib.limiter
- ~~~~~~~~~~~~~~~~~~~~~~~~
- A middleware that limits incoming data. This works around problems with
- Trac_ or Django_ because those directly stream into the memory.
- .. _Trac: http://trac.edgewall.org/
- .. _Django: http://www.djangoproject.com/
- :copyright: (c) 2014 by the Werkzeug Team, see AUTHORS for more details.
- :license: BSD, see LICENSE for more details.
- """
- from warnings import warn
- from werkzeug.wsgi import LimitedStream
- class StreamLimitMiddleware(object):
- """Limits the input stream to a given number of bytes. This is useful if
- you have a WSGI application that reads form data into memory (django for
- example) and you don't want users to harm the server by uploading tons of
- data.
- Default is 10MB
- .. versionchanged:: 0.9
- Deprecated middleware.
- """
- def __init__(self, app, maximum_size=1024 * 1024 * 10):
- warn(DeprecationWarning('This middleware is deprecated'))
- self.app = app
- self.maximum_size = maximum_size
- def __call__(self, environ, start_response):
- limit = min(self.maximum_size, int(environ.get('CONTENT_LENGTH') or 0))
- environ['wsgi.input'] = LimitedStream(environ['wsgi.input'], limit)
- return self.app(environ, start_response)
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