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path: root/testapp/myauthentication/backend.py
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import hashlib
from django.contrib.auth.models import User, check_password
from models_spoken_tutorial import MoodleUser


class MyBackend:
    supports_object_permissions = False
    supports_anonymous_user = False
    supports_inactive_user = False

    def authenticate(self, username=None, password=None):
        '''
            Checks username and password with external User table.
            If valid then adds the user details in django User table
            and authenticates the user.
        '''
        try:
            user = MoodleUser.objects.get(username=username)
            pwd = user.password
            uid = user.id
            firstname = user.firstname
            lastname = user.lastname
            email_id = user.email
            p = hashlib.md5(password)
            pwd_valid = (pwd == p.hexdigest())
            if user and pwd_valid:
                try:
                    user = User.objects.get(username=username)
                    return user
                except Exception, e:
                    user = User(id=uid, username=username, password=pwd,
                                first_name=firstname, last_name=lastname,
                                email=email_id)
                    user.save()
                    return user
        except Exception, e:
            return None

    def get_user(self, user_id):
        try:
            return User.objects.get(pk=user_id)
        except Exception, e:
            return None