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#!/bin/bash
# Copyright (C) 2022-2025 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
if [ $(id -u) -gt 0 ]; then
echo "ERROR: This script has to run as super-user root."
exit 1
fi
unset http_proxy
unset https_proxy
HOSTNAME="$(hostname -f)"
PUPPET_SERVER="$(dig puppet.intern +short | head -n1)"
if [ "${HOSTNAME}." != "${PUPPET_SERVER}" ]; then
exit 0
fi
if [[ -n "${1}" ]]; then
ONLY_PUPPET_CLIENT="${1}"
fi
source /etc/os-release
if [ "${ID}" = "debian" ] && \
([ "${VERSION_CODENAME}" == "stretch" ] || \
[ "${VERSION_CODENAME}" == "buster" ] || \
[ "${VERSION_CODENAME}" == "bullseye" ]); then
### Puppet 5.x et al. (until Debian 11)
# obtain list of puppet host certificate signing requests
NEW_PUPPET_SIGNING_REQUESTS="$(puppet cert list 2>/dev/null | awk '{ print $1 }' | sed 's/\"//g')"
# if any, iterate over them individually
if [ -n "${NEW_PUPPET_SIGNING_REQUESTS}" ]; then
echo "${NEW_PUPPET_SIGNING_REQUESTS}" | while read host_csr; do
# Only process one specific client...
if [ -n "${ONLY_PUPPET_CLIENT}" ] && [ "${ONLY_PUPPET_CLIENT}" != "${host_csr}" ]; then
continue
fi
# strip domain name
hostname_short="$(echo $host_csr | cut -d '.' -f1)"
## lookup host and see if it exists in LDAP:
ldapsystem=`ldapsearch -xLLL "(&(cn=${hostname_short})(|(objectClass=GOHard)(|(objectClass=ipHost))))" cn 2>/dev/null | perl -p00e 's/\r?\n //g' | grep -E '^cn:' | sed -e 's/^cn: //g'`
if [ -n "${ldapsystem}" ]; then
# yes, we should sign this host CSR
puppet cert sign "${host_csr}"
fi
done
fi
else
# Puppet 7.x and newer... (Debian 12 and beyond)
# obtain list of puppet host certificate signing requests
NEW_PUPPET_SIGNING_REQUESTS="$(puppetserver ca list 2>/dev/null | awk '{ print $1 }' | sed 's/\"//g')"
# if any, iterate over them individually
if [ -n "${NEW_PUPPET_SIGNING_REQUESTS}" ]; then
echo "${NEW_PUPPET_SIGNING_REQUESTS}" | while read host_csr; do
# Only process one specific client...
if [ -n "${ONLY_PUPPET_CLIENT}" ] && [ "${ONLY_PUPPET_CLIENT}" != "${host_csr}" ]; then
continue
fi
# strip domain name
hostname_short="$(echo $host_csr | cut -d '.' -f1)"
## lookup host and see if it exists in LDAP:
ldapsystem=`ldapsearch -xLLL "(&(cn=${hostname_short})(|(objectClass=GOHard)(|(objectClass=ipHost))))" cn 2>/dev/null | perl -p00e 's/\r?\n //g' | grep -E '^cn:' | sed -e 's/^cn: //g'`
if [ -n "${ldapsystem}" ]; then
# yes, we should sign this host CSR
puppetserver ca sign --certname "${host_csr}"
fi
done
fi
fi
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