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#!/bin/bash
# ========================================================================== #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 Maxim Devaev <[email protected]> #
# #
# 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 3 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, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
set -e
export LC_ALL=C
if [ "$(whoami)" != root ]; then
echo "Only root can do that"
exit 1
fi
user=kvmd-certbot
web=/run/kvmd-certbot/webroot
pstbase=/var/lib/kvmd/pst/data/certbot
cur="$pstbase/runroot"
new="$pstbase/runroot.new"
tmp=/tmp/kvmd-certbot/runroot
function cleanup() {
rm -rf "$tmp"
}
function create_tmp() {
mkdir "$tmp" # Acts as a lock
chown "$user:" "$tmp"
trap cleanup EXIT
}
function ensure_runroot() {
if [ ! -d "$cur" ]; then
kvmd-pstrun -- bash -c "
set -ex
mkdir -p '$cur'
chown '$user:' '$cur'
"
fi
}
function restart_if_running() {
if systemctl is-active --quiet "$2"; then
echo "=> systemctl $1 $2"
systemctl "$1" "$2" || true
fi
}
function restart_if_running_nginx() {
restart_if_running reload kvmd-nginx
}
function restart_if_running_vnc() {
restart_if_running restart kvmd-vnc
}
case "$1" in
-h|--help|help)
sudo -u "$user" certbot "$@" \
--config-dir="$cur/config" \
--work-dir="$cur/work" \
--logs-dir="$cur/logs"
;;
certonly)
create_tmp
ensure_runroot
sudo -u "$user" kvmd-pstrun -- certbot "$@" \
--config-dir="$cur/config" \
--work-dir="$cur/work" \
--logs-dir="$cur/logs" \
--webroot \
--webroot-path="$web" \
--deploy-hook="/usr/bin/bash -c '
set -ex
chmod 750 '$cur/config/'{archive,live}
cd \"\$RENEWED_LINEAGE\"
chmod 640 privkey.pem
ln -s fullchain.pem server.crt
ln -s privkey.pem server.key
'"
;;
renew)
shift
create_tmp
cp -a "$cur"/{config,work,logs} "$tmp"
sed -s -i -e "s| = $cur/| = $tmp/|g" "$tmp/config/renewal/"*
sudo -u "$user" certbot renew "$@" \
--config-dir="$tmp/config" \
--work-dir="$tmp/work" \
--logs-dir="$tmp/logs" \
--deploy-hook="/usr/bin/touch '$tmp/updated'"
if [ -f "$tmp/updated" ]; then
sudo -u "$user" kvmd-pstrun -- bash -c "
set -ex
rm -rf '$new'
cp -a '$tmp' '$new'
rm '$new/updated'
chmod 755 '$new/config/'{archive,live}
chmod 640 '$new'/config/archive/*/privkey*.pem
sed -s -i -e 's| = $tmp/| = $cur/|g' '$new/config/renewal/'*
sync
kvmd-helper-swapfiles '$new' '$cur'
rm -rf '$new'
"
restart_if_running_nginx
restart_if_running_vnc
fi
;;
install)
case "$2" in
nginx|vnc)
if [ -z "$2" ]; then
echo "Usage: kvmd-certbot install <nginx|vnc> <domain>"
exit 1
fi
set -x
rm -f "/etc/kvmd/$2/ssl/server."{crt,key}
ln -s "$cur/config/live/$3/server."{crt,key} "/etc/kvmd/$2/ssl/"
"restart_if_running_$2"
;;
*)
echo "Usage: kvmd-certbot install <nginx|vnc> <domain>"
exit 1
;;
esac
;;
--)
shift
create_tmp
ensure_runroot
sudo -u "$user" kvmd-pstrun -- certbot "$@" \
--config-dir="$cur/config" \
--work-dir="$cur/work" \
--logs-dir="$cur/logs"
;;
*)
echo "This command is not implemented by kvmd-certbot."
echo "To pass it into certbot under PST context use '--'."
echo "For example: kvmd-certbot -- $*"
exit 1
;;
esac
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