output: error on payload-buffer-size 0

Ticket: 7479

It makes no sense to ask for payload, but then want 0 bytes of it.

src/output-json-alert.c

@@ -1010,6 +1010,10 @@ static void JsonAlertLogSetupMetadata(AlertJsonOutputCtx *json_output_ctx, SCCon
                            "payload-buffer-size - %s. Killing engine",
                         payload_buffer_value);
                 exit(EXIT_FAILURE);
+            } else if (value == 0) {
+                // you should not ask for payload if you want 0 of it
+                SCLogError("Error payload-buffer-size should not be 0");
+                exit(EXIT_FAILURE);
             } else {
                 payload_buffer_size = value;
             }

src/output-json-frame.c

@@ -529,6 +529,10 @@ static OutputInitResult JsonFrameLogInitCtxSub(SCConfNode *conf, OutputCtx *pare
             if (ParseSizeStringU32(payload_buffer_value, &value) < 0) {
                 SCLogError("Error parsing payload-buffer-size \"%s\"", payload_buffer_value);
                 goto error;
+            } else if (value == 0) {
+                // you should not ask for payload if you want 0 of it
+                SCLogError("Error payload-buffer-size should not be 0");
+                goto error;
             }
             payload_buffer_size = value;
         }