From b8f5b41b98e17a6d124d04baf5e7e29c6b38fef1 Mon Sep 17 00:00:00 2001
From: macie <macie@users.noreply.github.com>
Date: Sat, 8 Feb 2025 16:32:38 +0100
Subject: [PATCH] fix: Detect HOSTNAME on OpenWrt

OpenWrt can be run on devices with little resource, so it can miss some BusyBox
commands (eg. hostname). The standard way of gathering info about OpenWrt is by
the `uci` command, see: <https://openwrt.org/docs/guide-user/base-system/uci>.
---
 lynis | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/lynis b/lynis
index 78401f25..0a9969df 100755
--- a/lynis
+++ b/lynis
@@ -520,12 +520,17 @@ ${NORMAL}
         HP-UX)
             HOSTNAME=$(hostname) ;;
         Linux)
-            HOSTNAME=$(hostname -s 2> /dev/null)
-            if [ -z "${HOSTNAME}" ]; then
-                HOSTNAME="${FQDN:-no-hostname}"
-            fi
-            if [ "${HOSTNAME}" = "${FQDN}" ]; then
-                FQDN=$(hostname -f 2> /dev/null)
+            if [ "${LINUX_VERSION}" = "OpenWrt" ]; then
+                HOSTNAME=$(uname -n)
+                FQDN="${HOSTNAME:+$HOSTNAME.}$(uci -q get dhcp.@dnsmasq[0].domain)"
+            else
+                HOSTNAME=$(hostname -s 2> /dev/null)
+                if [ -z "${HOSTNAME}" ]; then
+                  HOSTNAME="${FQDN:-no-hostname}"
+                fi
+                if [ "${HOSTNAME}" = "${FQDN}" ]; then
+                    FQDN=$(hostname -f 2> /dev/null)
+                fi
             fi
             ;;
         Solaris)