Fix bug in auth

feudal/backend/auth/v1/views/clients.py

@@ -53,33 +53,25 @@ def _apiclient_get(request):
     return None
 
 def _webpage_client_userid(request):
+    userid = ''
     username = request.POST.get('username')
     if username.startswith('webpage-client:'):
         components = username.split(':', maxsplit=1)
         if len(components) == 2:
-            return components[1]
-    return ''
-
-def _webpage_client_session(request):
-    query = Session.objects.filter(
-        session_key=request.POST.get('password'),
-    )
-    if query.exists() and len(query) == 1:
-        return query.first()
-    return None
+            userid = components[1]
+    return userid
 
 def _webpage_client_valid(request):
     userid = _webpage_client_userid(request)
-    session = _webpage_client_session(request)
-
-    if (
-            _webpage_client_userid(request) != ''
-            and session.get_decoded().get('_auth_user_id') == userid
-    ):
-        return True
+    try:
+        session = Session.objects.get(
+            session_key=request.POST.get('password'),
+        )
+        return session.get_decoded().get('_auth_user_id') == userid
 
-    #LOGGER.error('Failed to authenticate webpage client for RabbitMQ')
-    return False
+    except Session.DoesNotExist:
+        LOGGER.info("User %s has no session", userid)
+        return False
 
 # VIEWS: authentication and authorization for
 # apiclients and webpage-clients