bundled/werkzeug/werkzeug/contrib/limiter.py @ b2bd9c232faa
flask
Bundle Werkzeug.
author |
Steve Losh <steve@stevelosh.com> |
date |
Fri, 11 Jun 2010 20:14:01 -0400 |
parents |
(none) |
children |
(none) |
# -*- 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) 2010 by the Werkzeug Team, see AUTHORS for more details.
:license: BSD, see LICENSE for more details.
"""
from warnings import warn
from werkzeug 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)