From 5cdc7524e216a527ef10f71d1ba24afec524db8b Mon Sep 17 00:00:00 2001
From: Martin Berghaus <martinberghaus@web.de>
Date: Sat, 22 Feb 2025 23:11:10 +0100
Subject: [PATCH] getter handling with own domain

---
 .gitignore               |  4 ++--
 core/printOwnDomain.sh   | 28 ++++++++++++++++++++++++++++
 setupCoreOntoThisHost.sh |  4 ++--
 3 files changed, 32 insertions(+), 4 deletions(-)
 create mode 100644 core/printOwnDomain.sh

diff --git a/.gitignore b/.gitignore
index 34a2b94..ff1f297 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
-# Ignore the file '/domainOfHostOwner' because this is per host individually.
-/domainOfHostOwner
+# Ignore the file '/overrideOwnDomain' because this is per host individually.
+/overrideOwnDomain
 
 # Ignore the subfolders only, because their content are other git repositories.
 # But 'definitions and 'states' should be prepared by cloning this repository.
diff --git a/core/printOwnDomain.sh b/core/printOwnDomain.sh
new file mode 100644
index 0000000..5d619ef
--- /dev/null
+++ b/core/printOwnDomain.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+#WARNING: Used for core functionality in setup.sh
+#         DO NOT rename the script and test changes well!
+
+
+
+# Folders always ends with an tailing '/'
+_SCRIPT="$(readlink -f "${0}" 2> /dev/null)"
+_CORE_SCRIPTS="$(dirname ${_SCRIPT:?"Missing SCRIPT"} 2> /dev/null)/"
+_CIS_ROOT="$(dirname ${_CORE_SCRIPTS:?"Missing CORE_SCRIPTS"} 2> /dev/null)/"
+_OVERRIDE_DOMAIN_FILE="${_CIS_ROOT:?"Missing CIS_ROOT"}overrideOwnDomain"
+
+# Wenn OVERRIDING_DOMAIN_FILE enhält lesbare Daten
+grep '[^[:space:]]' "${_OVERRIDE_DOMAIN_FILE:?"Missing OVERRIDE_DOMAIN_FILE"}" &> /dev/null \
+    && echo "WARNING: Domain has been overridden by: ${_OVERRIDE_DOMAIN_FILE}" > /dev/stderr \
+    && cat "${_OVERRIDE_DOMAIN_FILE}" \
+    && exit 0
+
+_BOOT_HOSTNAME="$(hostname -b)"
+# There has to be one dot at least.
+echo "${_BOOT_HOSTNAME}" | grep -v '\.' &> /dev/null \
+    && echo "It was impossible to find out the domain of this host, please prepare this host first." > /dev/stderr \
+    && exit 1
+
+#Removes shortest matching pattern '*.' from the begin to get the domain
+echo "${_BOOT_HOSTNAME#*.}" \
+    && exit 0
diff --git a/setupCoreOntoThisHost.sh b/setupCoreOntoThisHost.sh
index b0b9876..78bc6b3 100755
--- a/setupCoreOntoThisHost.sh
+++ b/setupCoreOntoThisHost.sh
@@ -39,7 +39,7 @@ function checkPreconditions() {
     ! [ -z "${_DOMAIN}" ] \
         && [ "$(hostname -d)" != "${_DOMAIN}" ] \
         && echo \
-        && echo "WARNING: system-domain DOES NOT MATCH domainOfHostOwner: '$(hostname -d)' != '${_DOMAIN}'" \
+        && echo "WARNING: system-domain DOES NOT MATCH overrideOwnDomain: '$(hostname -d)' != '${_DOMAIN}'" \
         && echo
 
     # Given domain verfügbar (nicht leer)
@@ -71,7 +71,7 @@ function checkPreconditions() {
 function getOrSetDomain() {
     local _CIS_ROOT _DOMAIN_FILE _GIVEN_DOMAIN
     _CIS_ROOT="${1:?"Missing parameter CIS_ROOT"}"
-    _DOMAIN_FILE="${_CIS_ROOT:?"Missing CIS_ROOT"}domainOfHostOwner"
+    _DOMAIN_FILE="${_CIS_ROOT:?"Missing CIS_ROOT"}overrideOwnDomain"
     _GIVEN_DOMAIN="${2}" # Optional parameter DOMAIN
     readonly _CIS_ROOT _DOMAIN_FILE _GIVEN_DOMAIN