Synnefo

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from time import time, mktime

from django.conf import settings

from pithos.im.models import User

class AuthMiddleware(object):

    def process_request(self, request):

        request.user = None

        request.user_uniq = None

        # Try to find token in a parameter, in a request header, or in a cookie.

        token = request.GET.get('X-Auth-Token', None)

        if not token:

            token = request.META.get('HTTP_X_AUTH_TOKEN', None)

        if not token:

            token = request.COOKIES.get('X-Auth-Token', None)

        if not token: # Back from an im login target.

            if request.GET.get('user', None):

                token = request.GET.get('token', None)

                if token:

                    request.set_auth_cookie = True

        if not token:

            return

        # Token was found, retrieve user from backing store.

        try:

            user = User.objects.get(auth_token=token)

        except:

            return

        # Check if the is active.

        if user.state != 'ACTIVE':

            return

        # Check if the token has expired.

        if (time() - mktime(user.auth_token_expires.timetuple())) > 0:

            return

        request.user = user

        request.user_uniq = user.uniq

    def process_response(self, request, response):

        if getattr(request, 'user', None) and getattr(request, 'set_auth_cookie', False):

            expire_fmt = request.user.auth_token_expires.strftime('%a, %d-%b-%Y %H:%M:%S %Z')

            response.set_cookie('X-Auth-Token', value=request.user.auth_token, expires=expire_fmt, path='/')

        return response