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Diffstat (limited to 'websdk/werkzeug/contrib/limiter.py')
-rw-r--r-- | websdk/werkzeug/contrib/limiter.py | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/websdk/werkzeug/contrib/limiter.py b/websdk/werkzeug/contrib/limiter.py new file mode 100644 index 0000000..d0dbcc5 --- /dev/null +++ b/websdk/werkzeug/contrib/limiter.py @@ -0,0 +1,36 @@ +# -*- 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) 2011 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 + """ + + def __init__(self, app, maximum_size=1024 * 1024 * 10): + 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) |