Log IP address of any unauth request made

Author: Casvt

frontend/api.py

@@ -197,6 +197,11 @@ def wrapper(*args, **kwargs):
         try:
             extract_key(request, 'api_key')
         except (KeyNotFound, InvalidKeyValue):
+            ip = request.environ.get(
+                'HTTP_X_FORWARDED_FOR',
+                request.remote_addr
+            )
+            LOGGER.warning(f'Unauthorised request from {ip}')
             return return_api({}, 'ApiKeyInvalid', 401)
 
         diffuse_timers()