#32643: CookieStorage for contrib.messages crashes after upgrade to django 3.2
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Reporter: Jan Pieter Waagmeester | Owner: nobody
Type: Bug | Status: new
Component: contrib.messages | Version: 3.2
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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After upgrading to django 3.2, a prevously stored cookie for
contrib.messages crashes in
https://github.com/django/django/blob/d6314c4c2ef647efe0d12450214fc5b4a4055290/django/contrib/messages/storage/cookie.py#L175
Django Version: 3.2
Python Version: 3.8.2
{{{
Traceback (most recent call last):
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/core/handlers/exception.py", line 47, in inner
response = get_response(request)
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/utils/deprecation.py", line 119, in __call__
response = self.process_response(request, response)
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/contrib/messages/middleware.py", line 23, in
process_response
unstored_messages = request._messages.update(response)
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/contrib/messages/storage/base.py", line 127, in update
messages = self._loaded_messages + self._queued_messages
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/contrib/messages/storage/base.py", line 79, in
_loaded_messages
messages, all_retrieved = self._get()
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/contrib/messages/storage/fallback.py", line 25, in _get
messages, all_retrieved = storage._get()
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/contrib/messages/storage/cookie.py", line 86, in _get
messages = self._decode(data)
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/contrib/messages/storage/cookie.py", line 175, in _decode
return self.signer.unsign_object(data, serializer=MessageSerializer)
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/core/signing.py", line 195, in unsign_object
data = b64_decode(base64d)
File "/home/obs/virtualenv/lib/python3.8/site-
packages/django/core/signing.py", line 68, in b64_decode
return base64.urlsafe_b64decode(s + pad)
File "/usr/lib/python3.8/base64.py", line 133, in urlsafe_b64decode
return b64decode(s)
File "/usr/lib/python3.8/base64.py", line 87, in b64decode
return binascii.a2b_base64(s)
Exception Type: Error at /user/login/
Exception Value: Invalid base64-encoded string: number of data characters
(369) cannot be 1 more than a multiple of 4
}}}
(redacted) contents of the 'messages' cookie:
{{{
'[["__json_message",0,25,"Successfully signed in as '
'[email protected]."],["__json_message",0,25,"Successfully '
'signed in as jieter."],["__json_message",0,25,"Ingelogd als '
'[email protected]."],["__json_message",0,25,"Ingelogd '
'als '
'[email protected]."],["__json_message",0,20,"Bevestigingsmail '
'verzonden naar [email protected]."],["__json_message",0,25,"Ingelogd '
'als '
'[email protected]."]]:1lTkj1:j_3PlpYSKiqPTMAB6_p2Q00eE8j6k7n0Sg_-_IpXG7Y')
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/32643>
Django <https://code.djangoproject.com/>
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