Re: custom authentication backend not being used...

[Peter Herndon]

On 08/19/2009 02:04 PM, Jay wrote:
> Sorry, nevermind.  I finally figured this out right after I posted
> this.
>
>
What was the solution?  Both for posterity, and because I'm personally 
curious.

Thanks,

---Peter

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Re: custom authentication backend not being used...

[Jay]

Sorry, nevermind.  I finally figured this out right after I posted
this.

On Aug 19, 12:48 pm, Jay  wrote:
> First off, I'm using Django 1.1.
>
> I've been having problems getting my custom authentication backend to
> work, specifically in the "admin" site.
>
> I've been using this page as guide to put together an auth backend
> that uses my subclass of the User model to authenticate.
>
> http://scottbarnham.com/blog/2008/08/21/extending-the-django-user-mod...
>
> I will post all code below, but for the moment here is the problem.
> I'm trying to log into the django admin site and I'm getting an
> exception on "check_password()" that shows me that the admin login
> system is using the User.check_password() rather than my subclass'
> check_password(). I'm working with an existing database here and I
> don't want to change my password hashing scheme if I don't have to.
> The thing that's driving me crazy is that the admin site doesn't seem
> to be using my User subclass.
>
> Is there something I'm forgetting/missing here?
>
> Thanks for any help anyone has to offer.
>
> Here is all relevant code (if there is something I'm forgetting, do
> let me know):
>
> settings.py
> --
>
> ...
> ...
> AUTHENTICATION_BACKENDS = (
>     'mf_pyweb.auth_backends.EmUserModelBackend' ,
> )
> CUSTOM_USER_MODEL = 'mfmain.EmUser'
>
> INSTALLED_APPS = (
>     'django.contrib.auth',
>     'django.contrib.contenttypes',
>     'django.contrib.sessions',
>     'django.contrib.sites',
>     'django.contrib.admin',
>     'mf_pyweb.mfmain',
>     'mf_pyweb.mfadmin',
> )
>
> --
>
> auth_backends.py
> --
>
> from django.conf import settings
> from django.contrib.auth.backends import ModelBackend
> from django.core.exceptions import ImproperlyConfigured
> from django.db.models import get_model
>
> class EmUserModelBackend(ModelBackend):
>     def authenticate(self , username=None , password=None ,
> email=None):
>         try:
>             user = None
>             if email or '@' in username:
>                 user = self.user_class.objects.get(email=email)
>             elif username:
>                 user = self.user_class.objects.get(username=username)
>             else:
>                 return None
>             if user.check_password(password):
>                 return user
>         except:
>             return None
>
>     def get_user(self , user_id):
>         try:
>             return self.user_class.objects.get(pk=user_id)
>         except:
>             return None
>
>     def get_user(self , user_id):
>         try:
>             return self.user_class.objects.get(pk=user_id)
>         except:
>             return None
>
>     @property
>     def user_class(self):
>         if not hasattr(self , '_user_class'):
>             self._user_class = get_model(
>                     *settings.CUSTOM_USER_MODEL.split('.' , 2))
>             if not self._user_class:
>                 raise ImproperlyConfigured('Could not get custom user
> model')
>         return self._user_class
>
> --
>
> mfmain/models.py:
> --
>
> ...
> ...
> class EmUser(User):
>     domain = models.ForeignKey(Domain , db_index=True ,
> db_column='dom_id')
>     report_freq = models.PositiveIntegerField()
>     report_time = models.DateTimeField()
>     userdir = models.CharField(max_length=1024)
>
>     objects = UserManager()
>
>     def set_password(self , raw_pass):
>         self.password = getPHash(raw_pass)
>
>     def check_password(self , raw_pass):
>         salt , hash = self.password.split('$')
>         return (getPHash(raw_pass , salt , False) == hash)
>
>     def __str__(self):
>         return self.email
>
>     class Meta:
>         db_table = 'users'
>         ordering = ['email' , 'username' , 'date_joined']
>         verbose_name_plural = 'users'
> ...
> ...
> --
>
> --
> Jay Deiman
>
> \033:wq!
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