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On 04/13/2012 10:58 AM, Jim Carroll wrote:
> Hi, I'm struggling a bit to get rid of the friendly form identifier
> and challenger, and do my own Authenticator in a turbogears 2.1
> project.
>
> I've got a 'faceless' web services server that won't even have a
> login form, since no human will ever visit the site. So I want to
> retain the session cookie mechanism, and the sa_auth module that uses
> the default Group, User, and Permission model in SQL Alchemy. I just
> am going to do my own Authentication, and get rid of the Challenger.
Are you "authenticating" clients based on the subnet, or something?
Otherwise you need a chellenger of some sort. Note that you may still
need some kind of challenger to cope with requests which come from
"hostile" / random sources.
> So far I've implemented an IAuthenticator
>
> class ShaAuthenticator(IAuthenticator): #implements(IAuthenticator)
>
> def authenticate(self, environment, identity):
>
> if not 'user_email' in identity: return None ...
>
> and in app_cfg.py
>
> hash_auth = ShaAuthenticator base_config.sa_auth.authenticators =
> [('hash_auth', hash_auth)]
>
> # got rid of the challenger base_config.sa_auth.form_plugin = None
>
> #and am keeping base_config.auth_backend = 'sqlalchemy'
> base_config.sa_auth.dbsession = model.DBSession
>
>
> If I try to run at the moment I see:
>
> ValueError: hash_auth: An object has failed to implement interface
> <InterfaceClass repoze.who.interfaces.IAuthenticator>
>
> The authenticate attribute was not provided.
>
> I didn't find much help on the turbogears google group, I'm hoping
> someone might be able to point me in the right direction here.
> Thanks,
I'm not quite sure what else might be going on, but I do see that you
haven't created an instance of ShaAuthenticator. You have also commented
out the 'implements' class advisor.
FWIW, I ususally have unit tests like the following for classes that are
supposed to implement a given interface::
class MyObjTests(unittest.TestCase):
def _getTargetClass(self):
from mypackage.myobj import MyObj
return MyObj
def _makeOne(self, *args, **kw):
return self._getTargetClass()(*args, **kw)
def test_class_conforms_to_IFoo(self):
from zope.interface.verify import verifyClass
from whatever.package.interfaces import IFoo
verifyClass(IFoo, self._getTargetClass()
def test_instance_conforms_to_IFoo(self):
from zope.interface.verify import verifyObject
from whatever.package.interfaces import IFoo
verifyObject(IFoo, self._makeOne())
Tres.
- --
===================================================================
Tres Seaver +1 540-429-0999 tsea...@palladion.com
Palladion Software "Excellence by Design" http://palladion.com
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