Synnefo

# Copyright 2011 GRNET S.A. All rights reserved.

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from django.contrib.auth.backends import ModelBackend

from astakos.im.models import AstakosUser

from astakos.im import settings

import logging

logger = logging.getLogger(__name__)

class TokenBackend(ModelBackend):

    """

    AuthenticationBackend used to authenticate using token instead

    """

    def authenticate(self, email=None, auth_token=None):

        try:

            user = AstakosUser.objects.get_by_identifier(email, is_active=True,

                                                        auth_token=auth_token)

            return user

        except AstakosUser.DoesNotExist:

            return None

        else:

            msg = 'Invalid token during authentication for %s' % email

            logger._log(settings.LOGGING_LEVEL, msg, [])

    def get_user(self, user_id):

        try:

            return AstakosUser.objects.get(pk=user_id)

        except AstakosUser.DoesNotExist:

            return None

class EmailBackend(ModelBackend):

    """

    If the ``username`` parameter is actually an email uses email to authenticate

    the user else tries the username.

    Used from ``astakos.im.forms.LoginForm`` to authenticate.

    """

    def authenticate(self, username=None, password=None):

        # First check whether a user having this email exists

        try:

            user = AstakosUser.objects.get_by_identifier(username)

        except AstakosUser.DoesNotExist:

            return None

        if user.check_password(password):

            return user

        else:

            msg = 'Invalid password during authentication for %s' % username

            logger._log(settings.LOGGING_LEVEL, msg, [])

    def get_user(self, user_id):

        try:

            return AstakosUser.objects.get(pk=user_id)

        except AstakosUser.DoesNotExist:

            return None