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django/tests/csrf_tests/test_context_processor.py
Shai Berger 5112e65ef2 Fixed #20869 -- made CSRF tokens change every request by salt-encrypting them
Note that the cookie is not changed every request, just the token retrieved
by the `get_token()` method (used also by the `{% csrf_token %}` tag).

While at it, made token validation strict: Where, before, any length was
accepted and non-ASCII chars were ignored, we now treat anything other than
`[A-Za-z0-9]{64}` as invalid (except for 32-char tokens, which, for
backwards-compatibility, are accepted and replaced by 64-char ones).

Thanks Trac user patrys for reporting, github user adambrenecki
for initial patch, Tim Graham for help, and Curtis Maloney,
Collin Anderson, Florian Apolloner, Markus Holtermann & Jon Dufresne
for reviews.
2016-05-19 05:02:19 +03:00

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Python

from django.http import HttpRequest
from django.middleware.csrf import _compare_salted_tokens as equivalent_tokens
from django.template.context_processors import csrf
from django.test import SimpleTestCase
from django.utils.encoding import force_text
class TestContextProcessor(SimpleTestCase):
def test_force_text_on_token(self):
request = HttpRequest()
test_token = '1bcdefghij2bcdefghij3bcdefghij4bcdefghij5bcdefghij6bcdefghijABCD'
request.META['CSRF_COOKIE'] = test_token
token = csrf(request).get('csrf_token')
self.assertTrue(equivalent_tokens(force_text(token), test_token))