From 2f426ba4199db691591b4ff7c958cb92f063c2b1 Mon Sep 17 00:00:00 2001
From: Ad Schellevis <ad@opnsense.org>
Date: Sun, 15 Oct 2017 18:14:08 +0200
Subject: [PATCH] network insight / export, return empty file when parameters
 are missing. closes https://github.com/opnsense/core/issues/1454

---
 .../OPNsense/Diagnostics/Api/NetworkinsightController.php       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/NetworkinsightController.php b/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/NetworkinsightController.php
index 2f10aa77e..e0fec8224 100644
--- a/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/NetworkinsightController.php
+++ b/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/NetworkinsightController.php
@@ -261,7 +261,7 @@ class NetworkinsightController extends ApiControllerBase
     ) {
         $this->response->setRawHeader("Content-Type: application/octet-stream");
         $this->response->setRawHeader("Content-Disposition: attachment; filename=".$provider.".csv");
-        if ($this->request->isGet()) {
+        if ($this->request->isGet() && $provider != null && $resolution != null ) {
             $backend = new Backend();
             $configd_cmd = "netflow aggregate export {$provider} {$from_date} {$to_date} {$resolution}";
             $response = $backend->configdRun($configd_cmd);