Adding django user integration, backend and middleware for TikiUser

apps/sumo/middleware.py

@@ -8,10 +8,12 @@ import urllib
 
 from django.http import HttpResponsePermanentRedirect
 from django.utils.encoding import smart_str
+from django.contrib import auth
 
 import tower
 
 from . import urlresolvers
+from .models import Session
 from sumo.helpers import urlparams
 
 
@@ -56,3 +58,25 @@ class LocaleURLMiddleware(object):
         request.path_info = '/' + prefixer.shortened_path
         request.locale = prefixer.locale
         tower.activate(prefixer.locale)
+
+
+class TikiCookieMiddleware(object):
+    """
+    This middleware looks at the SUMOv1 cookie set by Tiki and authenticates
+    the user in django.
+    """
+
+    def process_request(self, request):
+        """Look up the SUMOv1 cookie and authenticate the user"""
+
+        id = request.COOKIES.get('SUMOv1')
+
+        if id:
+            try:
+                session = Session.objects.get(pk=id)
+            except Session.DoesNotExist:
+                return
+            user = auth.authenticate(session=session)
+            if user is not None:
+                auth.login(request, user)
+