Tuesday, January 27, 2015

Re: Django UnicodeDecodeError at /admin/login/

Hi James. your hint  was actually very inspiring.

After concatenating  'drupal$' to the imported password, I was still unable to authenticate. Then I realized that the passwords are in unicode but the hasher considers them to be ascii, so I added :

password = password.encode('ascii','ignore')

at the begining of the both 'encode' and 'verify' methods 

This solved the problem and saved my escape rout out of drupal :)

Thank you very much for your hint.  

On Tue, Jan 27, 2015 at 9:04 PM, James Schneider <jrschneider83@gmail.com> wrote:

Did you read the comments on that snippet? It appears there may need to be some extra encoding/decoding needed (example additional code is listed there), which would make sense given the decoding errors you are seeing.

-James

On Jan 27, 2015 9:54 AM, "Supermario" <humanbsd@gmail.com> wrote:
I try to implement this hasher in order to be able to authenticate user who are imported from drupal 7. 

So I put the hasher in the settings.py as follows:


PASSWORD_HASHERS = (
   
   
'myproj.drupal_hasher.DrupalPasswordHasher', #drupal hasher
     
   
'django.contrib.auth.hashers.PBKDF2SHA1PasswordHasher',
   
   
'django.contrib.auth.hashers.BCryptPasswordHasher',
   
'django.contrib.auth.hashers.SHA1PasswordHasher',
   
'django.contrib.auth.hashers.MD5PasswordHasher',
   
'django.contrib.auth.hashers.CryptPasswordHasher',
     
)



However it does not authenticate imported users from drupal and for users who are created in Django I get:

    'ascii' codec can't decode byte 0xcf in position 0: ordinal not in range(128)




Here is the trackback:


   
Environment:
   
   
   
Request Method: POST
   
Request URL: http://127.0.0.1:8000/auth/
   
   
Django Version: 1.7.3
   
Python Version: 2.7.3
   
Installed Applications:
   
('django.contrib.admin',
     
'django.contrib.auth',
     
'django.contrib.contenttypes',
     
'django.contrib.sessions',
     
'django.contrib.messages',
     
'django.contrib.staticfiles',
     
'article',
     
'photo',
     
'debug_toolbar',
     
'django_markdown',
     
'haystack')
   
Installed Middleware:
   
(u'debug_toolbar.middleware.DebugToolbarMiddleware',
     
'django.contrib.sessions.middleware.SessionMiddleware',
     
'django.middleware.common.CommonMiddleware',
     
'django.middleware.csrf.CsrfViewMiddleware',
     
'django.contrib.auth.middleware.AuthenticationMiddleware',
     
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
     
'django.contrib.messages.middleware.MessageMiddleware',
     
'django.middleware.clickjacking.XFrameOptionsMiddleware')
   
   
   
Traceback:
   
File "/home/mario/.myprojenv/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
     
111.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
   
File "/home/mario/myproj/myauth/views.py" in auth_view
     
16.     user = auth.authenticate(username=username, password=password)
   
File "/home/mario/.myprojenv/local/lib/python2.7/site-packages/django/contrib/auth/__init__.py" in authenticate
     
60.             user = backend.authenticate(**credentials)
   
File "/home/mario/.myprojenv/local/lib/python2.7/site-packages/django/contrib/auth/backends.py" in authenticate
     
17.             if user.check_password(password):
   
File "/home/mario/.myprojenv/local/lib/python2.7/site-packages/django/contrib/auth/models.py" in check_password
     
237.         return check_password(raw_password, self.password, setter)
   
File "/home/mario/.myprojenv/local/lib/python2.7/site-packages/django/contrib/auth/hashers.py" in check_password
     
63.         setter(password)
   
File "/home/mario/.myprojenv/local/lib/python2.7/site-packages/django/contrib/auth/models.py" in setter
     
235.             self.set_password(raw_password)
   
File "/home/mario/.myprojenv/local/lib/python2.7/site-packages/django/contrib/auth/models.py" in set_password
     
227.         self.password = make_password(raw_password)
   
File "/home/mario/.myprojenv/local/lib/python2.7/site-packages/django/contrib/auth/hashers.py" in make_password
     
85.     return hasher.encode(password, salt)
   
File "/home/mario/myproj/myproj/drupal_hasher.py" in encode
     
81.         encoded_hash = self._apply_hash(password, self._digests[digest], settings)
   
File "/home/mario/myproj/myproj/drupal_hasher.py" in _apply_hash
     
68.             password_hash = digest(password_hash + password).digest()
   
   
Exception Type: UnicodeDecodeError at /auth/
   
Exception Value: 'ascii' codec can't decode byte 0xcf in position 0: ordinal not in range(128)


All source and destination database tables are converted to utf8_unicode_ci.

I am stock on this problem for days so really appreciate your help. 



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