Error checking and reporting on interface ufw rule

library/system/ufw

@@ -205,6 +205,9 @@ def main():
     if len(commands) < 1:
         module.fail_json(msg="Not any of the command arguments %s given" % commands)
 
+    if('interface' in params and 'direction' not in params):
+      module.fail_json(msg="Direction must be specified when creating a rule on an interface")
+
     # Ensure ufw is available
     ufw_bin = module.get_bin_path('ufw', True)