add: macro endpoints

add: basic macro support
fix: database locking with lock-pointer
fix: memory leaks

src/command.c

@@ -90,13 +90,17 @@ command_schedule_update(schedule_t *schedule)
             LOGGER_ERR("couldn't find controller for relay %d\n", relays[i]->id);
             continue;
         }
-        controller_free(controller);
 
         LOGGER_DEBUG("sending command to controller %s\n", controller->name);
+
         result |= command_send(controller, payload, payload_size);
+
+        controller_free(controller);
     }
     relay_free_list(relays);
 
+    free(payload);
+
     return result;
 }