#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-05-05; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.live.builder.git
# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
# SPDX-FileCopyrightText: 2024–2025; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-FileType: SOURCE
# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
# SPDX-PackageName: CISS.debian.live.builder
# SPDX-Security-Contact: security@coresecret.eu
set -C -e -u -o pipefail

printf "\e[95m++++ ++++ ++++ ++++ ++++ ++++ ++ 🧪 '%s' starting ... \e[0m\n" "${0}"
# sleep 1

mkdir -p /var/log/chrony
# See https://coresecret.eu/tutorials/debian-package-glossary/ for a brief description of the installed packages.
apt-get install chrony -y
systemctl enable chrony.service

mv /etc/chrony/chrony.conf /root/.ciss/dlb/backup/chrony.conf.bak
chmod 644 /root/.ciss/dlb/backup/chrony.conf.bak

cat << 'EOF' >| /etc/chrony/chrony.conf
# Include configuration files found in /etc/chrony/conf.d.
confdir /etc/chrony/conf.d
driftfile /var/lib/chrony/chrony.drift
keyfile /etc/chrony/chrony.keys
logdir /var/log/chrony
ntsdumpdir /var/lib/chrony
sourcedir /run/chrony-dhcp
sourcedir /etc/chrony/sources.d

log tracking measurements statistics

authselectmode require

server ptbtime1.ptb.de iburst nts minpoll 5 maxpoll 9
server ptbtime2.ptb.de iburst nts minpoll 5 maxpoll 9
server ptbtime3.ptb.de iburst nts minpoll 5 maxpoll 9
server ptbtime4.ptb.de iburst nts noselect minpoll 5 maxpoll 9
# server nts.netnod.se iburst nts minpoll 5 maxpoll 9

# server ntp.ripe.net iburst nts minpoll 5 maxpoll 9
# server ntp12.metas.ch iburst nts minpoll 5 maxpoll 9
# server ntp2.tecnico.ulisboa.pt iburst nts minpoll 5 maxpoll 9
# server time-c-b.nist.gov iburst nts minpoll 5 maxpoll 9
server ntp0.fau.de iburst nts minpoll 5 maxpoll 9

leapsectz right/UTC

leapsecmode system

maxupdateskew 100.0

rtcsync

makestep 1 3
EOF

chmod 644 /etc/chrony/chrony.conf

printf "\e[92m++++ ++++ ++++ ++++ ++++ ++++ ++ ✅ '%s' applied successfully. \e[0m\n" "${0}"
# sleep 1

exit 0
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh