#!/bin/bash ACME_BASE=/var/lib/acme SSL_EXAMPLE=/var/lib/ssl-example mkdir -p ${ACME_BASE}/acme/private restart_containers(){ for container in $*; do curl -X POST \ --unix-socket /var/run/docker.sock \ "http/containers/${container}/restart" done } if [[ -f ${ACME_BASE}/cert.pem ]]; then ISSUER=$(openssl x509 -in ${ACME_BASE}/cert.pem -noout -issuer) if [[ ${ISSUER} != *"Let's Encrypt"* && ${ISSUER} != *"mailcow"* ]]; then echo "Found certificate with issuer other than mailcow snake-oil CA and Let's Encrypt, skipping ACME client..." exit 0 else declare -a SAN_ARRAY_NOW SAN_NAMES=$(openssl x509 -noout -text -in ${ACME_BASE}/cert.pem | awk '/X509v3 Subject Alternative Name/ {getline;gsub(/ /, "", $0); print}' | tr -d "DNS:") if [[ ! -z ${SAN_NAMES} ]]; then IFS=',' read -a SAN_ARRAY_NOW <<< ${SAN_NAMES} echo "Found Let's Encrypt or mailcow snake-oil CA issued certificate with SANs: ${SAN_ARRAY_NOW[*]}" fi fi else ISSUER="mailcow" if [[ -f ${ACME_BASE}/acme/fullchain.pem ]] && [[ -f ${ACME_BASE}/acme/private/privkey.pem ]]; then cp ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/key.pem else cp ${SSL_EXAMPLE}/cert.pem ${ACME_BASE}/cert.pem cp ${SSL_EXAMPLE}/key.pem ${ACME_BASE}/key.pem fi fi while true; do if [[ "${SKIP_LETS_ENCRYPT}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then echo "SKIP_LETS_ENCRYPT=y, skipping Let's Encrypt..." exit 0 fi declare -a SQL_DOMAIN_ARR declare -a VALIDATED_CONFIG_DOMAINS declare -a ADDITIONAL_VALIDATED_SAN IFS=' ' read -r -a ADDITIONAL_SAN_ARR <<< "${ADDITIONAL_SAN}" IPV4=$(curl -4s https://mailcow.email/ip.php) while read line; do SQL_DOMAIN_ARR+=("${line}") done < <(mysql -h mysql-mailcow -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "SELECT domain FROM domain" -Bs) for SQL_DOMAIN in "${SQL_DOMAIN_ARR[@]}"; do A_CONFIG=$(dig A autoconfig.${SQL_DOMAIN} +short | tail -n 1) if [[ ! -z ${A_CONFIG} ]]; then echo "Found A record for autoconfig.${SQL_DOMAIN}: ${A_CONFIG}" if [[ ${IPV4} == ${A_CONFIG} ]]; then echo "Confirmed A record autoconfig.${SQL_DOMAIN}" VALIDATED_CONFIG_DOMAINS+=("autoconfig.${SQL_DOMAIN}") else echo "Cannot match Your IP against hostname autoconfig.${SQL_DOMAIN}" fi else echo "No A record for autoconfig.${SQL_DOMAIN} found" fi A_DISCOVER=$(dig A autodiscover.${SQL_DOMAIN} +short | tail -n 1) if [[ ! -z ${A_DISCOVER} ]]; then echo "Found A record for autodiscover.${SQL_DOMAIN}: ${A_CONFIG}" if [[ ${IPV4} == ${A_DISCOVER} ]]; then echo "Confirmed A record autodiscover.${SQL_DOMAIN}" VALIDATED_CONFIG_DOMAINS+=("autodiscover.${SQL_DOMAIN}") else echo "Cannot match Your IP against hostname autodiscover.${SQL_DOMAIN}" fi else echo "No A record for autodiscover.${SQL_DOMAIN} found" fi done for SAN in "${ADDITIONAL_SAN_ARR[@]}"; do A_SAN=$(dig A ${SAN} +short | tail -n 1) if [[ ! -z ${A_SAN} ]]; then echo "Found A record for ${SAN}: ${A_SAN}" if [[ ${IPV4} == ${A_SAN} ]]; then echo "Confirmed A record ${SAN}" ADDITIONAL_VALIDATED_SAN+=("${SAN}") else echo "Cannot match Your IP against hostname ${SAN}" fi else echo "No A record for ${SAN} found" fi done ORPHANED_SAN=($(echo ${SAN_ARRAY_NOW[*]} ${VALIDATED_CONFIG_DOMAINS[*]} ${ADDITIONAL_VALIDATED_SAN[*]} ${MAILCOW_HOSTNAME} | tr ' ' '\n' | sort | uniq -u )) if [[ ! -z ${ORPHANED_SAN[*]} ]]; then DATE=$(date +%Y-%m-%d_%H_%M_%S) echo "Found orphaned SAN(s) ${ORPHANED_SAN[*]} in certificate, moving old files to ${ACME_BASE}/acme/private/${DATE}.bak/" mkdir -p ${ACME_BASE}/acme/private/${DATE}.bak/ [[ -f ${ACME_BASE}/acme/private/account.key ]] && mv ${ACME_BASE}/acme/private/account.key ${ACME_BASE}/acme/private/${DATE}.bak/ mv ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/acme/private/${DATE}.bak/ mv ${ACME_BASE}/acme/cert.pem ${ACME_BASE}/acme/private/${DATE}.bak/ cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/acme/private/${DATE}.bak/ # Keep key for TLSA 3 1 1 records fi acme-client \ -v -e -b -N -n \ -f ${ACME_BASE}/acme/private/account.key \ -k ${ACME_BASE}/acme/private/privkey.pem \ -c ${ACME_BASE}/acme \ ${MAILCOW_HOSTNAME} ${VALIDATED_CONFIG_DOMAINS[*]} ${ADDITIONAL_VALIDATED_SAN[*]} case "$?" in 0) # new certs # cp the new certificates and keys cp ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/key.pem # restart docker containers restart_containers ${CONTAINERS_RESTART} ;; 1) # failure [[ -f ${ACME_BASE}/acme/private/${DATE}.bak/fullchain.pem ]] && cp ${ACME_BASE}/acme/private/${DATE}.bak/fullchain.pem ${ACME_BASE}/cert.pem [[ -f ${ACME_BASE}/acme/private/${DATE}.bak/privkey.pem ]] && cp ${ACME_BASE}/acme/private/${DATE}.bak/privkey.pem ${ACME_BASE}/key.pem exit 1;; 2) # no change ;; *) # unspecified [[ -f ${ACME_BASE}/acme/private/${DATE}.bak/fullchain.pem ]] && cp ${ACME_BASE}/acme/private/${DATE}.bak/fullchain.pem ${ACME_BASE}/cert.pem [[ -f ${ACME_BASE}/acme/private/${DATE}.bak/privkey.pem ]] && cp ${ACME_BASE}/acme/private/${DATE}.bak/privkey.pem ${ACME_BASE}/key.pem exit 1;; esac echo "ACME certificate validation done. Sleeping for another day." sleep 86400 done