245 lines
10 KiB
Bash
Executable File
245 lines
10 KiB
Bash
Executable File
#!/bin/bash
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ACME_BASE=/var/lib/acme
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SSL_EXAMPLE=/var/lib/ssl-example
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mkdir -p ${ACME_BASE}/acme/private
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restart_containers(){
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for container in $*; do
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echo "Restarting ${container}..."
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curl -X POST \
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--unix-socket /var/run/docker.sock \
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"http/containers/${container}/restart"
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done
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}
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verify_hash_match(){
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CERT_HASH=$(openssl x509 -noout -modulus -in "${1}" | openssl md5)
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KEY_HASH=$(openssl rsa -noout -modulus -in "${2}" | openssl md5)
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if [[ ${CERT_HASH} != ${KEY_HASH} ]]; then
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echo "Certificate and key hashes do not match!"
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return 1
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else
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echo "Verified hashes."
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return 0
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fi
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}
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[[ ! -f ${ACME_BASE}/dhparams.pem ]] && cp ${SSL_EXAMPLE}/dhparams.pem ${ACME_BASE}/dhparams.pem
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if [[ -f ${ACME_BASE}/cert.pem ]] && [[ -f ${ACME_BASE}/key.pem ]]; then
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ISSUER=$(openssl x509 -in ${ACME_BASE}/cert.pem -noout -issuer)
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if [[ ${ISSUER} != *"Let's Encrypt"* && ${ISSUER} != *"mailcow"* ]]; then
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echo "Found certificate with issuer other than mailcow snake-oil CA and Let's Encrypt, skipping ACME client..."
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exit 0
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else
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declare -a SAN_ARRAY_NOW
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SAN_NAMES=$(openssl x509 -noout -text -in ${ACME_BASE}/cert.pem | awk '/X509v3 Subject Alternative Name/ {getline;gsub(/ /, "", $0); print}' | tr -d "DNS:")
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if [[ ! -z ${SAN_NAMES} ]]; then
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IFS=',' read -a SAN_ARRAY_NOW <<< ${SAN_NAMES}
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echo "Found Let's Encrypt or mailcow snake-oil CA issued certificate with SANs: ${SAN_ARRAY_NOW[*]}"
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fi
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fi
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else
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if [[ -f ${ACME_BASE}/acme/fullchain.pem ]] && [[ -f ${ACME_BASE}/acme/private/privkey.pem ]]; then
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if verify_hash_match ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/acme/private/privkey.pem; then
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echo "Restoring previous acme certificate and restarting script..."
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cp ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/key.pem
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exec env TRIGGER_RESTART=1 $(readlink -f "$0")
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fi
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ISSUER="mailcow"
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else
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echo "Restoring mailcow snake-oil certificates and restarting script..."
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cp ${SSL_EXAMPLE}/cert.pem ${ACME_BASE}/cert.pem
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cp ${SSL_EXAMPLE}/key.pem ${ACME_BASE}/key.pem
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exec env TRIGGER_RESTART=1 $(readlink -f "$0")
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fi
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fi
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while true; do
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if [[ "${SKIP_LETS_ENCRYPT}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
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echo "SKIP_LETS_ENCRYPT=y, skipping Let's Encrypt..."
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exit 0
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fi
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if [[ "${SKIP_IP_CHECK}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
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SKIP_IP_CHECK=y
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fi
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unset SQL_DOMAIN_ARR
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unset VALIDATED_CONFIG_DOMAINS
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unset ADDITIONAL_VALIDATED_SAN
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declare -a SQL_DOMAIN_ARR
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declare -a VALIDATED_CONFIG_DOMAINS
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declare -a ADDITIONAL_VALIDATED_SAN
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IFS=',' read -r -a ADDITIONAL_SAN_ARR <<< "${ADDITIONAL_SAN}"
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IPV4=$(curl -4s https://mailcow.email/ip.php)
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# Container ids may have changed
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CONTAINERS_RESTART=($(curl --silent --unix-socket /var/run/docker.sock http/containers/json | jq -rc 'map(select(.Names[] | contains ("nginx-mailcow") or contains ("postfix-mailcow") or contains ("dovecot-mailcow"))) | .[] .Id' | tr "\n" " "))
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while read domain; do
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SQL_DOMAIN_ARR+=("${domain}")
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done < <(mysql -h mysql-mailcow -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "SELECT domain FROM domain WHERE backupmx=0" -Bs)
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while read alias_domain; do
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SQL_DOMAIN_ARR+=("${alias_domain}")
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done < <(mysql -h mysql-mailcow -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "SELECT alias_domain FROM alias_domain" -Bs)
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for SQL_DOMAIN in "${SQL_DOMAIN_ARR[@]}"; do
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A_CONFIG=$(dig A autoconfig.${SQL_DOMAIN} +short | tail -n 1)
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if [[ ! -z ${A_CONFIG} ]]; then
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echo "Found A record for autoconfig.${SQL_DOMAIN}: ${A_CONFIG}"
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if [[ ${IPV4:-ERR} == ${A_CONFIG} ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
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echo "Confirmed A record autoconfig.${SQL_DOMAIN}"
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VALIDATED_CONFIG_DOMAINS+=("autoconfig.${SQL_DOMAIN}")
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else
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echo "Cannot match your IP ${IPV4} against hostname autoconfig.${SQL_DOMAIN} (${A_CONFIG})"
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fi
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else
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echo "No A record for autoconfig.${SQL_DOMAIN} found"
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fi
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A_DISCOVER=$(dig A autodiscover.${SQL_DOMAIN} +short | tail -n 1)
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if [[ ! -z ${A_DISCOVER} ]]; then
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echo "Found A record for autodiscover.${SQL_DOMAIN}: ${A_DISCOVER}"
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if [[ ${IPV4:-ERR} == ${A_DISCOVER} ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
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echo "Confirmed A record autodiscover.${SQL_DOMAIN}"
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VALIDATED_CONFIG_DOMAINS+=("autodiscover.${SQL_DOMAIN}")
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else
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echo "Cannot match your IP ${IPV4} against hostname autodiscover.${SQL_DOMAIN} (${A_DISCOVER})"
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fi
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else
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echo "No A record for autodiscover.${SQL_DOMAIN} found"
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fi
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done
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A_MAILCOW_HOSTNAME=$(dig A ${MAILCOW_HOSTNAME} +short | tail -n 1)
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if [[ ! -z ${A_MAILCOW_HOSTNAME} ]]; then
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echo "Found A record for ${MAILCOW_HOSTNAME}: ${A_MAILCOW_HOSTNAME}"
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if [[ ${IPV4:-ERR} == ${A_MAILCOW_HOSTNAME} ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
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echo "Confirmed A record ${MAILCOW_HOSTNAME}"
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VALIDATED_MAILCOW_HOSTNAME=${MAILCOW_HOSTNAME}
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else
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echo "Cannot match your IP ${IPV4} against hostname ${MAILCOW_HOSTNAME} (${A_MAILCOW_HOSTNAME}) "
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fi
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else
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echo "No A record for ${MAILCOW_HOSTNAME} found"
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fi
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for SAN in "${ADDITIONAL_SAN_ARR[@]}"; do
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if [[ ${SAN} == ${MAILCOW_HOSTNAME} ]]; then
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continue
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fi
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A_SAN=$(dig A ${SAN} +short | tail -n 1)
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if [[ ! -z ${A_SAN} ]]; then
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echo "Found A record for ${SAN}: ${A_SAN}"
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if [[ ${IPV4:-ERR} == ${A_SAN} ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
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echo "Confirmed A record ${SAN}"
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ADDITIONAL_VALIDATED_SAN+=("${SAN}")
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else
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echo "Cannot match your IP against hostname ${SAN}"
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fi
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else
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echo "No A record for ${SAN} found"
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fi
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done
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# Unique elements
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ALL_VALIDATED=(${VALIDATED_MAILCOW_HOSTNAME} $(echo ${VALIDATED_CONFIG_DOMAINS[*]} ${ADDITIONAL_VALIDATED_SAN[*]} | xargs -n1 | sort -u | xargs))
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if [[ -z ${ALL_VALIDATED[*]} ]]; then
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echo "Cannot validate hostnames, skipping Let's Encrypt..."
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exit 0
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fi
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ORPHANED_SAN=($(echo ${SAN_ARRAY_NOW[*]} ${ALL_VALIDATED[*]} | tr ' ' '\n' | sort | uniq -u ))
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if [[ ! -z ${ORPHANED_SAN[*]} ]] && [[ ${ISSUER} != *"mailcow"* ]]; then
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DATE=$(date +%Y-%m-%d_%H_%M_%S)
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echo "Found orphaned SAN ${ORPHANED_SAN[*]} in certificate, moving old files to ${ACME_BASE}/acme/private/${DATE}.bak/, keeping key file..."
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mkdir -p ${ACME_BASE}/acme/private/${DATE}.bak/
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[[ -f ${ACME_BASE}/acme/private/account.key ]] && mv ${ACME_BASE}/acme/private/account.key ${ACME_BASE}/acme/private/${DATE}.bak/
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[[ -f ${ACME_BASE}/acme/fullchain.pem ]] && mv ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/acme/private/${DATE}.bak/
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[[ -f ${ACME_BASE}/acme/cert.pem ]] && mv ${ACME_BASE}/acme/cert.pem ${ACME_BASE}/acme/private/${DATE}.bak/
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cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/acme/private/${DATE}.bak/ # Keep key for TLSA 3 1 1 records
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fi
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acme-client \
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-v -e -b -N -n \
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-f ${ACME_BASE}/acme/private/account.key \
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-k ${ACME_BASE}/acme/private/privkey.pem \
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-c ${ACME_BASE}/acme \
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${ALL_VALIDATED[*]}
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case "$?" in
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0) # new certs
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# cp the new certificates and keys
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cp ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/key.pem
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# restart docker containers
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if ! verify_hash_match ${ACME_BASE}/cert.pem ${ACME_BASE}/key.pem; then
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echo "Certificate was successfully requested, but key and certificate have non-matching hashes, restoring mailcow snake-oil and restarting containers..."
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cp ${SSL_EXAMPLE}/cert.pem ${ACME_BASE}/cert.pem
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cp ${SSL_EXAMPLE}/key.pem ${ACME_BASE}/key.pem
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fi
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restart_containers ${CONTAINERS_RESTART[*]}
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;;
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1) # failure
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if [[ -f ${ACME_BASE}/acme/private/${DATE}.bak/fullchain.pem ]] && [[ -f ${ACME_BASE}/acme/private/${DATE}.bak/privkey.pem ]]; then
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echo "Error requesting certificate, restoring previous certificate from backup and restarting containers...."
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cp ${ACME_BASE}/acme/private/${DATE}.bak/fullchain.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/acme/private/${DATE}.bak/privkey.pem ${ACME_BASE}/key.pem
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TRIGGER_RESTART=1
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elif [[ -f ${ACME_BASE}/acme/fullchain.pem ]] && [[ -f ${ACME_BASE}/acme/private/privkey.pem ]]; then
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echo "Error requesting certificate, restoring from previous acme request and restarting containers..."
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cp ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/key.pem
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TRIGGER_RESTART=1
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fi
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if ! verify_hash_match ${ACME_BASE}/cert.pem ${ACME_BASE}/key.pem; then
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echo "Error verifying certificates, restoring mailcow snake-oil and restarting containers..."
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cp ${SSL_EXAMPLE}/cert.pem ${ACME_BASE}/cert.pem
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cp ${SSL_EXAMPLE}/key.pem ${ACME_BASE}/key.pem
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TRIGGER_RESTART=1
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fi
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[[ ${TRIGGER_RESTART} == 1 ]] && restart_containers ${CONTAINERS_RESTART[*]}
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exit 1;;
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2) # no change
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if ! diff ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem; then
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echo "Certificate was not changed, but active certificate does not match the verified certificate, fixing and restarting containers..."
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cp ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/key.pem
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restart_containers ${CONTAINERS_RESTART[*]}
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fi
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if ! verify_hash_match ${ACME_BASE}/cert.pem ${ACME_BASE}/key.pem; then
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echo "Certificate was not changed, but hashes do not match, restoring from previous acme request and restarting containers..."
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cp ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/key.pem
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restart_containers ${CONTAINERS_RESTART[*]}
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fi
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;;
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*) # unspecified
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if [[ -f ${ACME_BASE}/acme/private/${DATE}.bak/fullchain.pem ]] && [[ -f ${ACME_BASE}/acme/private/${DATE}.bak/privkey.pem ]]; then
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echo "Error requesting certificate, restoring previous certificate from backup and restarting containers...."
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cp ${ACME_BASE}/acme/private/${DATE}.bak/fullchain.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/acme/private/${DATE}.bak/privkey.pem ${ACME_BASE}/key.pem
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TRIGGER_RESTART=1
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elif [[ -f ${ACME_BASE}/acme/fullchain.pem ]] && [[ -f ${ACME_BASE}/acme/private/privkey.pem ]]; then
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echo "Error requesting certificate, restoring from previous acme request and restarting containers..."
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cp ${ACME_BASE}/acme/fullchain.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/key.pem
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TRIGGER_RESTART=1
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fi
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if ! verify_hash_match ${ACME_BASE}/cert.pem ${ACME_BASE}/key.pem; then
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echo "Error verifying certificates, restoring mailcow snake-oil..."
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cp ${SSL_EXAMPLE}/cert.pem ${ACME_BASE}/cert.pem
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cp ${SSL_EXAMPLE}/key.pem ${ACME_BASE}/key.pem
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TRIGGER_RESTART=1
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fi
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[[ ${TRIGGER_RESTART} == 1 ]] && restart_containers ${CONTAINERS_RESTART[*]}
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exit 1;;
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esac
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echo "ACME certificate validation done. Sleeping for another day."
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sleep 86400
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done
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