From c80540ccf3818a5f638055267cee74deae89ab9f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?B=C5=82a=C5=BCej=20Sowa?= <bsowa123@gmail.com>
Date: Thu, 23 Nov 2023 12:31:37 +0100
Subject: [PATCH] Fix issue with strncpy truncating null character from source
 string

---
 source/FreeRTOS_DNS.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/FreeRTOS_DNS.c b/source/FreeRTOS_DNS.c
index 9fb62a196..899e47978 100644
--- a/source/FreeRTOS_DNS.c
+++ b/source/FreeRTOS_DNS.c
@@ -282,7 +282,8 @@
 
             ( void ) memset( pxAddrInfo, 0, sizeof( *pxAddrInfo ) );
             pxAddrInfo->ai_canonname = pxAddrInfo->xPrivateStorage.ucName;
-            ( void ) strncpy( pxAddrInfo->xPrivateStorage.ucName, pcName, sizeof( pxAddrInfo->xPrivateStorage.ucName ) );
+            ( void ) strncpy( pxAddrInfo->xPrivateStorage.ucName, pcName, sizeof( pxAddrInfo->xPrivateStorage.ucName ) - 1 );
+            pxAddrInfo->xPrivateStorage.ucName[ sizeof( pxAddrInfo->xPrivateStorage.ucName ) - 1 ] = '\0';
 
             pxAddrInfo->ai_addr = ( ( struct freertos_sockaddr * ) &( pxAddrInfo->xPrivateStorage.sockaddr ) );