email-auth.py

from django.contrib.auth.models import User
import re

class BasicBackend:
    def get_user(self, user_id):
        try:
            return User.objects.get(pk=user_id)
        except User.DoesNotExist:
            return None

email_re = re.compile(
        r"(^[-!#$%&'*+/=?^_`{}|~0-9A-Z]+(\.[-!#$%&'*+/=?^_`{}|~0-9A-Z]+)*"  # dot-atom
        r'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|\\[\001-\011\013\014\016-\177])*"' # quoted-string
        r')@(?:[A-Z0-9-]+\.)+[A-Z]{2,6}$', re.IGNORECASE)  # domain

class EmailBackend(BasicBackend):
    def authenticate(self, username=None, password=None):
        user = None
        print username
        print password
        #If username is an email address, then try to pull it up
        if email_re.search(username):
            try:
                user = User.objects.get(email=(username.lower()))
                #print "(%s)" % user.password
            except User.DoesNotExist:
                return None
        else:
            return None
            #We have a non-email address username we should try username
            #try:
            #    user = User.objects.get(username=username)
            #except User.DoesNotExist:
            #    return None
        if user.check_password(password):
            return user