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#!/bin/bash
# Easy letsencrypt certs using a bash script.
# v1.4 - 03/21/2017
# By Brielle Bruns <bruns@2mbit.com>
# http://www.sosdg.org
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# Use like: gen-cert.sh -d domain1.com -d domain2.com
#
# There are three options for authentication:
#
# 1) Webroot (normal)
# Specify -r flag with -d and -e flags.
# gen-cert.sh -d domain1.com -r /var/www/domain1.com
#
# 2) Webroot (alias)
# Same as #1, but also include an alias directive in apache like in:
# https://source.sosdg.org/brielle/lets-encrypt-scripts/blob/master/apache-le-alias.conf
# And:
# mkdir -p /var/www/letsencrypt-root/.well-known/acme-challenge
# gen-cert.sh -d domain1.com -d domain2.com -r /var/www/letsencrypt-root
#
# 3) Proxy auth
# This auth method uses the standalone authenticator with a mod_proxy
# https://source.sosdg.org/brielle/lets-encrypt-scripts/blob/master/apache-le-proxy.conf
# Original proxy idea from:
# http://evolvedigital.co.uk/how-to-get-letsencrypt-working-with-ispconfig-3/
PROXYAUTH="--standalone --preferred-challenges http-01 --http-01-port 9999"
# Location of LetsEncrypt binary we use. Leave unset if you want to let it find automatically
#LEBINARY="/usr/src/letsencrypt/certbot-auto"
DEFAULTLEBINARY="/usr/bin/certbot /usr/bin/letsencrypt /usr/sbin/certbot
/usr/sbin/letsencrypt /usr/local/bin/certbot /usr/local/sbin/certbot
/usr/local/bin/letsencrypt /usr/local/sbin/letsencrypt
/usr/src/letsencrypt/certbot-auto /usr/src/letsencrypt/letsencrypt-auto
/usr/src/certbot/certbot-auto /usr/src/certbot/letsencrypt-auto
/usr/src/certbot-master/certbot-auto /usr/src/certbot-master/letsencrypt-auto"
if [[ ! -v LEBINARY ]]; then
for i in ${DEFAULTLEBINARY}; do
if [[ -x ${i} ]]; then
LEBINARY=${i}
echo "Found LetsEncrypt/Certbot binary at ${LEBINARY}"
break
fi
done
fi
if [[ ! -x ${LEBINARY} ]]; then
echo "Error: LetsEncrypt binary not found in ${LEBINARY} !"
echo "You'll need to do one of the following:"
echo "1) Change LEBINARY variable in this script"
echo "2) Install LE manually or via your package manager and do #1"
echo "3) Use the included get-letsencrypt.sh script to install it"
exit 1
fi
while getopts "d:r:e:" opt; do
case $opt in
d) domains+=("$OPTARG");;
r) webroot=("$OPTARG");;
e) email=("$OPTARG");;
esac
done
MAINDOMAIN=${domains[0]}
if [[ -z ${MAINDOMAIN} ]]; then
echo "Error: At least one -d argument is required"
exit 1
fi
if [[ ! -z ${email} ]]; then
email="--email ${email}"
else
email=""
fi
# Webroot auth method, activated with -r
WEBAUTH="-a webroot --webroot-path ${webroot}"
if [[ -z ${webroot} ]]; then
AUTH=${PROXYAUTH}
else
AUTH=${WEBAUTH}
fi
shift $((OPTIND -1))
for val in "${domains[@]}"; do
DOMAINS="${DOMAINS} -d ${val} "
done
${LEBINARY} ${email} \
--server https://acme-v01.api.letsencrypt.org/directory \
--agree-tos \
--renew-by-default \
${AUTH} \
${DOMAINS} \
certonly