Add SSL middleware

Signed-off-by: Kipchirchir Sigei <[email protected]>

onadata/libs/utils/middleware.py

@@ -8,7 +8,7 @@
 
 from django.conf import settings
 from django.db import OperationalError, connection
-from django.http import HttpResponseNotAllowed
+from django.http import HttpResponseNotAllowed, HttpResponseRedirect
 from django.middleware.locale import LocaleMiddleware
 from django.template import loader
 from django.utils.translation import gettext as _
@@ -120,3 +120,11 @@ def process_exception(self, request, exception):
                 settings.ALREADY_RAISED = False
 
         return None
+
+class SSLMiddleware(LocaleMiddleware):
+
+    def process_request(self, request):
+        if not any([settings.DEBUG, request.is_secure(), request.META.get("HTTP_X_FORWARDED_PROTO", "") == 'https']):
+            url = request.build_absolute_uri(request.get_full_path())
+            secure_url = url.replace("http://", "https://")
+            return HttpResponseRedirect(secure_url)