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#!/bin/bash
# Easy letsencrypt certs using a bash script.
# v1.2 - 12/13/2015
# By Brielle Bruns <bruns@2mbit.com>
# http://www.sosdg.org
# 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:
# http://users.sosdg.org/~bruns/lets-encrypt/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
# http://users.sosdg.org/~bruns/lets-encrypt/apache-le-proxy.conf
# Original proxy idea from:
# http://evolvedigital.co.uk/how-to-get-letsencrypt-working-with-ispconfig-3/
PROXYAUTH="--standalone --standalone-supported-challenges http-01 --http-01-port 9999"
while getopts "d:r:e:" opt; do
case $opt in
d) domains+=("$OPTARG");;
r) webroot=("$OPTARG");;
e) email=("$OPTARG");;
esac
done
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
cd /usr/src/letsencrypt
./letsencrypt-auto ${email} \
--server https://acme-v01.api.letsencrypt.org/directory \
--agree-tos \
--renew-by-default \
${AUTH} \
${DOMAINS} \
certonly