From 07ab666d84e59cca59625234e8c0d19432fc7e05 Mon Sep 17 00:00:00 2001
From: Daniel Kesselberg <mail@danielkesselberg.de>
Date: Mon, 4 Sep 2023 15:18:37 +0200
Subject: [PATCH] enh: skip processing for empty response

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>
---
 lib/private/Http/Client/DnsPinMiddleware.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/private/Http/Client/DnsPinMiddleware.php b/lib/private/Http/Client/DnsPinMiddleware.php
index f5e6214a4ab45..a2d971f7c2868 100644
--- a/lib/private/Http/Client/DnsPinMiddleware.php
+++ b/lib/private/Http/Client/DnsPinMiddleware.php
@@ -25,6 +25,7 @@
  */
 namespace OC\Http\Client;
 
+use OCP\Http\Client\LocalServerException;
 use Psr\Http\Message\RequestInterface;
 
 class DnsPinMiddleware {
@@ -127,6 +128,10 @@ public function addDnsPinning() {
 
 				$targetIps = $this->dnsResolve(idn_to_utf8($hostName), 0);
 
+				if (empty($targetIps)) {
+					throw new LocalServerException('No DNS record found for ' . $hostName);
+				}
+
 				$curlResolves = [];
 
 				foreach ($ports as $port) {