BOOT-5180 Determine runlevel and services at startup, Ubuntu Bionic 18.04

[mbtreetime]

Describe the bug
Ubuntu 18.04 is using systemd for controlling services.

On a default AWS EC2 instance the runlevel command returns 'N 5' which causes the BOOT-5180 test to fail

Version

• Ubuntu 18.04 https://aws.amazon.com/marketplace/pp/prodview-pkjqrkcfgcaog
• Lynis version 3.0.6-100

Expected behavior
It's unclear if I should just disable this test, or if it should still function correctly at 'runlevel 5'

Additional context
I'm not sure when I started seeing this message, I'm running Lynis on Ubuntu 18.04 I run the audit system from a cronjob and then grep the lynis-report.dat for suggestion entries.

Performing test ID BOOT-5180 (Check for Linux boot services (Debian style))

suggestion[]=BOOT-5180|Determine runlevel and services at startup|-|-|

The code is different now, but the result is similar. The runlevel returns 'N 5' which results in the "Determine runlevel and services at startup" message.

--- tests_boot_services.orig	2021-04-05 13:07:46.697907005 -0600
+++ tests_boot_services	2021-04-05 13:26:55.320215347 -0600
@@ -724,7 +724,7 @@
         # Runlevel check
         sRUNLEVEL=$(${RUNLEVELBINARY} | ${GREPBINARY} "N [0-9]" | ${AWKBINARY} '{ print $2} ')
         LogText "Result: found runlevel ${sRUNLEVEL}"
-        if [ "${sRUNLEVEL}" = "2" ]; then
+        if [ "${sRUNLEVEL}" = "2" ] || [ "${sRUNLEVEL}" = "5" ]; then
             LogText "Result: performing find in /etc/rc2.d as runlevel 2 is found"
             FIND=$(${FINDBINARY} ${ROOTDIR}etc/rc2.d -type l -print | ${CUTBINARY} -d '/' -f4 | ${SEDBINARY} "s/S[0-9][0-9]//g" | sort)
             if [ -n "${FIND}" ]; then

or:

--- tests_boot_services.orig	2021-04-05 13:07:46.697907005 -0600
+++ tests_boot_services	2021-04-05 13:07:25.322033166 -0600
@@ -724,16 +724,16 @@
         # Runlevel check
         sRUNLEVEL=$(${RUNLEVELBINARY} | ${GREPBINARY} "N [0-9]" | ${AWKBINARY} '{ print $2} ')
         LogText "Result: found runlevel ${sRUNLEVEL}"
-        if [ "${sRUNLEVEL}" = "2" ]; then
-            LogText "Result: performing find in /etc/rc2.d as runlevel 2 is found"
-            FIND=$(${FINDBINARY} ${ROOTDIR}etc/rc2.d -type l -print | ${CUTBINARY} -d '/' -f4 | ${SEDBINARY} "s/S[0-9][0-9]//g" | sort)
+        if [ "${sRUNLEVEL}" = "2" ] || [ "${sRUNLEVEL}" = "5" ]; then
+            LogText "Result: performing find in /etc/rc${sRUNLEVEL}.d as runlevel ${sRUNLEVEL} is found"
+            FIND=$(${FINDBINARY} ${ROOTDIR}etc/rc${sRUNLEVEL}.d -type l -print | ${CUTBINARY} -d '/' -f4 | ${SEDBINARY} "s/S[0-9][0-9]//g" | sort)
             if [ -n "${FIND}" ]; then
                 COUNT=0
                 for SERVICE in ${FIND}; do
-                    LogText "Found service (at boot, runlevel 2): ${SERVICE}"
+                    LogText "Found service (at boot, runlevel ${sRUNLEVEL}): ${SERVICE}"
                     COUNT=$((COUNT + 1))
                 done
-                Display --indent 2 --text "- Check services at startup (rc2.d)" --result "${STATUS_DONE}" --color WHITE
+                Display --indent 2 --text "- Check services at startup (rc${sRUNLEVEL}.d)" --result "${STATUS_DONE}" --color WHITE
                 Display --indent 4 --text "Result: found ${COUNT} services"
                 LogText "Result: found ${COUNT} services"
             fi

Originally posted by @arcticlinux in #61 (comment)