Added local-only auto-authorize for API

src/controller/controller_api.cpp

@@ -174,6 +174,11 @@ int Controller::handleAPIConnection(Socket::Connection & conn){
       }
       {//lock the config mutex here - do not unlock until done processing
         tthread::lock_guard<tthread::mutex> guard(configMutex);
+        //Are we local and not forwarded? Instant-authorized.
+        if (!authorized && !H.hasHeader("X-Real-IP") && conn.isLocal()){
+          INFO_MSG("Local API access automatically authorized");
+          authorized = true;
+        }
         //if already authorized, do not re-check for authorization
         if (authorized){
           Response["authorize"]["status"] = "OK";