+from django.conf import settings
+from django.core import urlresolvers
+
+# This is django-maintancemode v. 0.9.2
+
+from django.conf.urls import defaults
+defaults.handler503 = 'maintenancemode.views.defaults.temporary_unavailable'
+defaults.__all__.append('handler503')
+
+from maintenancemode.conf.settings import MAINTENANCE_MODE
+
+class MaintenanceModeMiddleware(object):
+ def process_request(self, request):
+ # Allow access if middleware is not activated
+ if not MAINTENANCE_MODE:
+ return None
+
+ # Allow access if remote ip is in INTERNAL_IPS
+ if request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS:
+ return None
+
+ # Allow acess if the user doing the request is logged in and a
+ # staff member.
+ if hasattr(request, 'user') and request.user.is_staff:
+ return None
+
+ # Otherwise show the user the 503 page
+ resolver = urlresolvers.get_resolver(None)
+
+ callback, param_dict = resolver._resolve_special('503')
+ return callback(request, **param_dict)
\ No newline at end of file