From e2da4a1138bd4eb612228351732799d61a3cee7b Mon Sep 17 00:00:00 2001
From: langfingaz <daniel@systemli.org>
Date: Sun, 2 May 2021 16:13:39 +0200
Subject: [PATCH] installer script: work in progress (11)

---
 pkg/de-p1st-installer/de-p1st-installer.sh | 40 +++++++++++++++++++++-
 pkg/de-p1st-installer/installer.cfg        |  3 ++
 2 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/pkg/de-p1st-installer/de-p1st-installer.sh b/pkg/de-p1st-installer/de-p1st-installer.sh
index 61a06e8..fd85f09 100755
--- a/pkg/de-p1st-installer/de-p1st-installer.sh
+++ b/pkg/de-p1st-installer/de-p1st-installer.sh
@@ -242,6 +242,40 @@ function run_genfstab() {
   printf "%s" "${fstab}" > /mnt/etc/fstab || return $?
 }
 
+function config_hostname_and_hosts() {
+  # @pre
+  #   HOSTNAME
+  #   FQDN (optional, e.g. sub.domain.de)
+  #   STATIC_IP (optional, e.g. 93.133.433.133)
+  #   IPV6_CAPABLE (optional, e.g. 1)
+
+  echo "${HOSTNAME}" >/mnt/etc/hostname || return $?
+
+  # If the system has a permanent IP address, it should be used instead of 127.0.1.1.
+  # * https://wiki.archlinux.org/index.php/Installation_guide#Network_configuration
+
+  # Desirable entries IPv4/IPv6:
+  # * https://man.archlinux.org/man/hosts.5#EXAMPLES
+
+  # If FQDN not given, use $HOSTNAME.localdomain instead
+  FQDN="${FQDN:="${HOSTNAME}.localdomain"}"
+  # If STATIC_IP not given, use 127.0.1.1 instead
+  STATIC_IP="${STATIC_IP:='127.0.1.1'}"
+
+  echo "# The following lines are desirable for IPv4 capable hosts
+127.0.0.1     localhost
+# 127.0.1.1 is often used for the FQDN of the machine
+${STATIC_IP}  ${FQDN}  ${HOSTNAME}" > /mnt/etc/hosts || return $?
+
+  if [ "${IPV6_CAPABLE}" = "1" ]; then
+    echo "
+# The following lines are desirable for IPv6 capable hosts
+::1           localhost ip6-localhost ip6-loopback
+ff02::1       ip6-allnodes
+ff02::2       ip6-allrouters" >> /mnt/etc/hosts || return $?
+  fi
+}
+
 function main() {
   # @pre
   #   bash libraries imported
@@ -280,10 +314,14 @@ function main() {
   mkdir /mnt/boot              || return $?
   mount "$BOOT_PART" /mnt/boot || return $?
 
+  # in: BIOS_TYPE, KERNEL, CPU_VENDOR
   run_pacstrap || return $?
+  # in: FS
   run_genfstab || return $?
 
-  echo "${HOSTNAME}" >/mnt/etc/hostname || return $?
+  # in: HOSTNAME, FQDN (optional), STATIC_IP (optional), IPV6_CAPABLE (optional)
+  config_hostname_and_hosts || return $?
+
 }
 
 main "$@"
diff --git a/pkg/de-p1st-installer/installer.cfg b/pkg/de-p1st-installer/installer.cfg
index f70b824..311cd98 100644
--- a/pkg/de-p1st-installer/installer.cfg
+++ b/pkg/de-p1st-installer/installer.cfg
@@ -1,6 +1,9 @@
 # Example config
 # for test in virtual machine
 
+# FQDN=domain.name.of.this.host.de
+# STATIC_IP=123.456.789.012
+# IPV6_CAPABLE=1
 HOSTNAME=yodaTest
 USERNAME=arch