zulip/scripts/setup/setup-certbot

105 lines
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#!/usr/bin/env bash
set -e
usage() {
cat <<EOF >&2
Usage: $0 --hostname=zulip.example.com --email=admin@example.com [--method={webroot|standalone}] [--no-zulip-conf]
EOF
exit 1
}
if [ "$EUID" -ne 0 ]; then
echo "Error: This script must be run as root" >&2
exit 1
fi
method=webroot
args="$(getopt -o '' --long help,hostname:,email:,method:,no-zulip-conf -n "$0" -- "$@")"
eval "set -- $args"
while true; do
case "$1" in
--hostname)
DOMAIN="$2"
shift
shift
;;
--email)
EMAIL="$2"
shift
shift
;;
--method)
method="$2"
shift
shift
;;
--no-zulip-conf)
no_zulip_conf=1
shift
;;
--help)
show_help=1
shift
;;
--)
break
;;
esac
done
if [ -n "$show_help" ]; then
usage
fi
if [ -z "$DOMAIN" -o -z "$EMAIL" ]; then
usage
fi
case "$method" in
standalone)
method_args=(--standalone)
;;
webroot)
method_args=(--webroot --webroot-path=/var/lib/zulip/certbot-webroot/)
;;
*)
usage
;;
esac
set -x
CERTBOT_PATH="/usr/local/sbin/certbot-auto"
# For reference https://certbot.eff.org/all-instructions/#debian-other-nginx
wget -q https://dl.eff.org/certbot-auto -O "$CERTBOT_PATH"
chmod a+x "$CERTBOT_PATH"
"$CERTBOT_PATH" certonly "${method_args[@]}" -d "$DOMAIN" -m "$EMAIL" --agree-tos --non-interactive
symlink_with_backup() {
if [ -e "$2" ]; then
# If the user is setting up our automatic certbot-management on a
# system that already has certs for Zulip, use some extra caution
# to keep the old certs available.
mv -f --backup=numbered "$2" "$2".setup-certbot || true
fi
ln -nsf "$1" "$2"
}
CERT_DIR=/etc/letsencrypt/live/"$DOMAIN"
symlink_with_backup "$CERT_DIR"/privkey.pem /etc/ssl/private/zulip.key
symlink_with_backup "$CERT_DIR"/fullchain.pem /etc/ssl/certs/zulip.combined-chain.crt
case "$method" in
webroot)
service nginx reload
;;
esac
if [ -z "$no_zulip_conf" ]; then
crudini --set /etc/zulip/zulip.conf certbot auto_renew yes
fi
echo "Certbot SSL certificate configuration succeeded."