From 1615b413a7b823d8b50dac0c2f22ea6e9d3c3ff7 Mon Sep 17 00:00:00 2001
From: Deon George <deon@dege.au>
Date: Fri, 24 May 2024 12:34:28 +1000
Subject: [PATCH] Assume f0 for DNS queries that dont pass an f in the query

---
 app/Classes/Protocol/DNS.php | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/app/Classes/Protocol/DNS.php b/app/Classes/Protocol/DNS.php
index d45bf4f..1c22c2b 100644
--- a/app/Classes/Protocol/DNS.php
+++ b/app/Classes/Protocol/DNS.php
@@ -197,9 +197,14 @@ final class DNS extends BaseProtocol
 				// First label should be p.. or f..
 				if (! is_null($p=$this->parse('p',$labels->first())))
 					$labels->shift();
+				else
+					$p = 0;
 
-				if (is_null($f=$this->parse('f',$labels->shift())))
-					return $this->nameerr();
+				// We'll assume f0
+				if (! is_null($f=$this->parse('f',$labels->first())))
+					$labels->shift();
+				else
+					$f = 0;
 
 				if (is_null($n=$this->parse('n',$labels->shift())))
 					return $this->nameerr();