40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
# -*- 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) 2013 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)
|