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mailcow/data/Dockerfiles/acme/docker-entrypoint.sh
andryyy 014a0c7af5
[ACME] Better HTTP verification
2019-06-29 20:28:03 +02:00

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#!/bin/bash
set -o pipefail
exec 5>&1
# Thanks to https://github.com/cvmiller -> https://github.com/cvmiller/expand6
source /srv/expand6.sh
# Skipping IP check when we like to live dangerously
if [[ "${SKIP_IP_CHECK}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
SKIP_IP_CHECK=y
fi
# Skipping HTTP check when we like to live dangerously
if [[ "${SKIP_HTTP_VERIFICATION}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
SKIP_HTTP_VERIFICATION=y
fi
# Request certificate for MAILCOW_HOSTNAME ony
if [[ "${ONLY_MAILCOW_HOSTNAME}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
ONLY_MAILCOW_HOSTNAME=y
fi
log_f() {
if [[ ${2} == "no_nl" ]]; then
echo -n "$(date) - ${1}"
elif [[ ${2} == "no_date" ]]; then
echo "${1}"
elif [[ ${2} != "redis_only" ]]; then
echo "$(date) - ${1}"
fi
if [[ ${3} == "b64" ]]; then
redis-cli -h redis LPUSH ACME_LOG "{\"time\":\"$(date +%s)\",\"message\":\"base64,$(printf '%s' "${1}")\"}" > /dev/null
else
redis-cli -h redis LPUSH ACME_LOG "{\"time\":\"$(date +%s)\",\"message\":\"$(printf '%s' "${1}" | \
tr '%&;$"[]{}-\r\n' ' ')\"}" > /dev/null
fi
}
if [[ "${SKIP_LETS_ENCRYPT}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
log_f "SKIP_LETS_ENCRYPT=y, skipping Let's Encrypt..."
sleep 365d
exec $(readlink -f "$0")
fi
log_f "Waiting for Docker API..." no_nl
until ping dockerapi -c1 > /dev/null; do
sleep 1
done
log_f "OK" no_date
ACME_BASE=/var/lib/acme
SSL_EXAMPLE=/var/lib/ssl-example
mkdir -p ${ACME_BASE}/acme
# Migrate
[[ -f ${ACME_BASE}/acme/private/privkey.pem ]] && mv ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/acme/key.pem
[[ -f ${ACME_BASE}/acme/private/account.key ]] && mv ${ACME_BASE}/acme/private/account.key ${ACME_BASE}/acme/account.pem
reload_configurations(){
# Reading container IDs
# Wrapping as array to ensure trimmed content when calling $NGINX etc.
local NGINX=($(curl --silent --insecure https://dockerapi/containers/json | jq -r '.[] | {name: .Config.Labels["com.docker.compose.service"], id: .Id}' | jq -rc 'select( .name | tostring | contains("nginx-mailcow")) | .id' | tr "\n" " "))
local DOVECOT=($(curl --silent --insecure https://dockerapi/containers/json | jq -r '.[] | {name: .Config.Labels["com.docker.compose.service"], id: .Id}' | jq -rc 'select( .name | tostring | contains("dovecot-mailcow")) | .id' | tr "\n" " "))
local POSTFIX=($(curl --silent --insecure https://dockerapi/containers/json | jq -r '.[] | {name: .Config.Labels["com.docker.compose.service"], id: .Id}' | jq -rc 'select( .name | tostring | contains("postfix-mailcow")) | .id' | tr "\n" " "))
# Reloading
echo "Reloading Nginx..."
NGINX_RELOAD_RET=$(curl -X POST --insecure https://dockerapi/containers/${NGINX}/exec -d '{"cmd":"reload", "task":"nginx"}' --silent -H 'Content-type: application/json' | jq -r .type)
[[ ${NGINX_RELOAD_RET} != 'success' ]] && { echo "Could not reload Nginx, restarting container..."; restart_container ${NGINX} ; }
echo "Reloading Dovecot..."
DOVECOT_RELOAD_RET=$(curl -X POST --insecure https://dockerapi/containers/${DOVECOT}/exec -d '{"cmd":"reload", "task":"dovecot"}' --silent -H 'Content-type: application/json' | jq -r .type)
[[ ${DOVECOT_RELOAD_RET} != 'success' ]] && { echo "Could not reload Dovecot, restarting container..."; restart_container ${DOVECOT} ; }
echo "Reloading Postfix..."
POSTFIX_RELOAD_RET=$(curl -X POST --insecure https://dockerapi/containers/${POSTFIX}/exec -d '{"cmd":"reload", "task":"postfix"}' --silent -H 'Content-type: application/json' | jq -r .type)
[[ ${POSTFIX_RELOAD_RET} != 'success' ]] && { echo "Could not reload Postfix, restarting container..."; restart_container ${POSTFIX} ; }
}
restart_container(){
for container in $*; do
log_f "Restarting ${container}..." no_nl
C_REST_OUT=$(curl -X POST --insecure https://dockerapi/containers/${container}/restart | jq -r '.msg')
log_f "${C_REST_OUT}" no_date
done
}
array_diff() {
# https://stackoverflow.com/questions/2312762, Alex Offshore
eval local ARR1=\(\"\${$2[@]}\"\)
eval local ARR2=\(\"\${$3[@]}\"\)
local IFS=$'\n'
mapfile -t $1 < <(comm -23 <(echo "${ARR1[*]}" | sort) <(echo "${ARR2[*]}" | sort))
}
verify_hash_match(){
CERT_HASH=$(openssl x509 -noout -modulus -in "${1}" | openssl md5)
KEY_HASH=$(openssl rsa -noout -modulus -in "${2}" | openssl md5)
if [[ ${CERT_HASH} != ${KEY_HASH} ]]; then
log_f "Certificate and key hashes do not match!"
return 1
else
log_f "Verified hashes."
return 0
fi
}
get_ipv4(){
local IPV4=
local IPV4_SRCS=
local TRY=
IPV4_SRCS[0]="ip4.mailcow.email"
IPV4_SRCS[1]="ip4.korves.net"
until [[ ! -z ${IPV4} ]] || [[ ${TRY} -ge 10 ]]; do
IPV4=$(curl --connect-timeout 3 -m 10 -L4s ${IPV4_SRCS[$RANDOM % ${#IPV4_SRCS[@]} ]} | grep -E "^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$")
[[ ! -z ${TRY} ]] && sleep 1
TRY=$((TRY+1))
done
echo ${IPV4}
}
get_ipv6(){
local IPV6=
local IPV6_SRCS=
local TRY=
IPV6_SRCS[0]="ip6.korves.net"
IPV6_SRCS[1]="ip6.mailcow.email"
until [[ ! -z ${IPV6} ]] || [[ ${TRY} -ge 10 ]]; do
IPV6=$(curl --connect-timeout 3 -m 10 -L6s ${IPV6_SRCS[$RANDOM % ${#IPV6_SRCS[@]} ]} | grep "^\([0-9a-fA-F]\{0,4\}:\)\{1,7\}[0-9a-fA-F]\{0,4\}$")
[[ ! -z ${TRY} ]] && sleep 1
TRY=$((TRY+1))
done
echo ${IPV6}
}
verify_challenge_path(){
# verify_challenge_path URL 4|6
RANDOM_N=${RANDOM}${RANDOM}${RANDOM}
echo ${RANDOM_N} > /var/www/acme/${RANDOM_N}
if [[ ${SKIP_HTTP_VERIFICATION} == "y" ]]; then
echo '(skipping check, returning 0)'
return 0
elif [[ "$(curl -${2} -L http://${1}/.well-known/acme-challenge/${RANDOM_N} --silent)" == "${RANDOM_N}" ]]; then
rm /var/www/acme/${RANDOM_N}
return 0
else
rm /var/www/acme/${RANDOM_N}
return 1
fi
}
[[ ! -f ${ACME_BASE}/dhparams.pem ]] && cp ${SSL_EXAMPLE}/dhparams.pem ${ACME_BASE}/dhparams.pem
if [[ -f ${ACME_BASE}/cert.pem ]] && [[ -f ${ACME_BASE}/key.pem ]] && [[ $(stat -c%s ${ACME_BASE}/cert.pem) != 0 ]]; then
ISSUER=$(openssl x509 -in ${ACME_BASE}/cert.pem -noout -issuer)
if [[ ${ISSUER} != *"Let's Encrypt"* && ${ISSUER} != *"mailcow"* && ${ISSUER} != *"Fake LE Intermediate"* ]]; then
log_f "Found certificate with issuer other than mailcow snake-oil CA and Let's Encrypt, skipping ACME client..."
sleep 3650d
exec $(readlink -f "$0")
fi
else
if [[ -f ${ACME_BASE}/acme/cert.pem ]] && [[ -f ${ACME_BASE}/acme/key.pem ]]; then
if verify_hash_match ${ACME_BASE}/acme/cert.pem ${ACME_BASE}/acme/key.pem; then
log_f "Restoring previous acme certificate and restarting script..."
cp ${ACME_BASE}/acme/cert.pem ${ACME_BASE}/cert.pem
cp ${ACME_BASE}/acme/key.pem ${ACME_BASE}/key.pem
# Restarting with env var set to trigger a restart,
exec env TRIGGER_RESTART=1 $(readlink -f "$0")
fi
ISSUER="mailcow"
else
log_f "Restoring mailcow snake-oil certificates and restarting script..."
cp ${SSL_EXAMPLE}/cert.pem ${ACME_BASE}/cert.pem
cp ${SSL_EXAMPLE}/key.pem ${ACME_BASE}/key.pem
exec env TRIGGER_RESTART=1 $(readlink -f "$0")
fi
fi
chmod 600 ${ACME_BASE}/key.pem
log_f "Waiting for database... " no_nl
while ! mysqladmin status --socket=/var/run/mysqld/mysqld.sock -u${DBUSER} -p${DBPASS} --silent; do
sleep 2
done
log_f "OK" no_date
log_f "Waiting for Nginx... " no_nl
until $(curl --output /dev/null --silent --head --fail http://nginx:8081); do
sleep 2
done
log_f "OK" no_date
# Waiting for domain table
log_f "Waiting for domain table... " no_nl
while [[ -z ${DOMAIN_TABLE} ]]; do
curl --silent http://nginx/ >/dev/null 2>&1
DOMAIN_TABLE=$(mysql --socket=/var/run/mysqld/mysqld.sock -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "SHOW TABLES LIKE 'domain'" -Bs)
[[ -z ${DOMAIN_TABLE} ]] && sleep 10
done
log_f "OK" no_date
log_f "Initializing, please wait... "
while true; do
# Re-using previous acme-mailcow account and domain keys
if [[ ! -f ${ACME_BASE}/acme/key.pem ]]; then
log_f "Generating missing domain private key..."
openssl genrsa 4096 > ${ACME_BASE}/acme/key.pem
else
log_f "Using existing domain key ${ACME_BASE}/acme/key.pem"
fi
if [[ ! -f ${ACME_BASE}/acme/account.pem ]]; then
log_f "Generating missing Lets Encrypt account key..."
openssl genrsa 4096 > ${ACME_BASE}/acme/account.pem
else
log_f "Using existing Lets Encrypt account key ${ACME_BASE}/acme/account.pem"
fi
chmod 600 ${ACME_BASE}/acme/key.pem
chmod 600 ${ACME_BASE}/acme/account.pem
# Cleaning up and init validation arrays
unset SQL_DOMAIN_ARR
unset VALIDATED_CONFIG_DOMAINS
unset ADDITIONAL_VALIDATED_SAN
unset ADDITIONAL_WC_ARR
unset ADDITIONAL_SAN_ARR
unset SAN_CHANGE
unset SAN_ARRAY_NOW
unset ORPHANED_SAN
unset ADDED_SAN
SAN_CHANGE=0
declare -a SAN_ARRAY_NOW
declare -a ORPHANED_SAN
declare -a ADDED_SAN
declare -a SQL_DOMAIN_ARR
declare -a VALIDATED_CONFIG_DOMAINS
declare -a ADDITIONAL_VALIDATED_SAN
declare -a ADDITIONAL_WC_ARR
declare -a ADDITIONAL_SAN_ARR
IFS=',' read -r -a TMP_ARR <<< "${ADDITIONAL_SAN}"
for i in "${TMP_ARR[@]}" ; do
if [[ "$i" =~ \.\*$ ]]; then
ADDITIONAL_WC_ARR+=(${i::-2})
else
ADDITIONAL_SAN_ARR+=($i)
fi
done
ADDITIONAL_WC_ARR+=('autodiscover' 'autoconfig')
# Start IP detection
log_f "Detecting IP addresses... " no_nl
IPV4=$(get_ipv4)
IPV6=$(get_ipv6)
log_f "OK" no_date
# Hard-fail on CAA errors for MAILCOW_HOSTNAME
MH_PARENT_DOMAIN=$(echo ${MAILCOW_HOSTNAME} | cut -d. -f2-)
MH_CAAS=( $(dig CAA ${MH_PARENT_DOMAIN} +short | sed -n 's/\d issue "\(.*\)"/\1/p') )
if [[ ! -z ${MH_CAAS} ]]; then
if [[ ${MH_CAAS[@]} =~ "letsencrypt.org" ]]; then
echo "Validated CAA for parent domain ${MH_PARENT_DOMAIN}"
else
echo "Skipping ACME validation: Lets Encrypt disallowed for ${MAILCOW_HOSTNAME} by CAA record, retrying in 1h..."
sleep 1h
exec $(readlink -f "$0")
fi
fi
#########################################
# IP and webroot challenge verification #
while read domains; do
SQL_DOMAIN_ARR+=("${domains}")
done < <(mysql --socket=/var/run/mysqld/mysqld.sock -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "SELECT domain FROM domain WHERE backupmx=0" -Bs)
if [[ ${ONLY_MAILCOW_HOSTNAME} != "y" ]]; then
for SQL_DOMAIN in "${SQL_DOMAIN_ARR[@]}"; do
for SUBDOMAIN in "${ADDITIONAL_WC_ARR[@]}"; do
if [[ "${SUBDOMAIN}.${SQL_DOMAIN}" != "${MAILCOW_HOSTNAME}" ]]; then
A_SUBDOMAIN=$(dig A ${SUBDOMAIN}.${SQL_DOMAIN} +short | tail -n 1)
AAAA_SUBDOMAIN=$(dig AAAA ${SUBDOMAIN}.${SQL_DOMAIN} +short | tail -n 1)
# Check if CNAME without v6 enabled target
if [[ ! -z ${AAAA_SUBDOMAIN} ]] && [[ -z $(echo ${AAAA_SUBDOMAIN} | grep "^\([0-9a-fA-F]\{0,4\}:\)\{1,7\}[0-9a-fA-F]\{0,4\}$") ]]; then
AAAA_SUBDOMAIN=
fi
if [[ ! -z ${AAAA_SUBDOMAIN} ]]; then
log_f "Found AAAA record for ${SUBDOMAIN}.${SQL_DOMAIN}: ${AAAA_SUBDOMAIN} - skipping A record check"
if [[ $(expand ${IPV6:-"0000:0000:0000:0000:0000:0000:0000:0000"}) == $(expand ${AAAA_SUBDOMAIN}) ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
if verify_challenge_path "${SUBDOMAIN}.${SQL_DOMAIN}" 6; then
log_f "Confirmed AAAA record ${AAAA_SUBDOMAIN}"
VALIDATED_CONFIG_DOMAINS+=("${SUBDOMAIN}.${SQL_DOMAIN}")
else
log_f "Confirmed AAAA record ${AAAA_SUBDOMAIN}, but HTTP validation failed"
fi
else
log_f "Cannot match your IP ${IPV6:-NO_IPV6_LINK} against hostname ${SUBDOMAIN}.${SQL_DOMAIN} ($(expand ${AAAA_SUBDOMAIN}))"
fi
elif [[ ! -z ${A_SUBDOMAIN} ]]; then
log_f "Found A record for ${SUBDOMAIN}.${SQL_DOMAIN}: ${A_SUBDOMAIN}"
if [[ ${IPV4:-ERR} == ${A_SUBDOMAIN} ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
if verify_challenge_path "${SUBDOMAIN}.${SQL_DOMAIN}" 4; then
log_f "Confirmed A record ${A_SUBDOMAIN}"
VALIDATED_CONFIG_DOMAINS+=("${SUBDOMAIN}.${SQL_DOMAIN}")
else
log_f "Confirmed A record ${A_SUBDOMAIN}, but HTTP validation failed"
fi
else
log_f "Cannot match your IP ${IPV4} against hostname ${SUBDOMAIN}.${SQL_DOMAIN} (${A_SUBDOMAIN})"
fi
else
log_f "No A or AAAA record found for hostname ${SUBDOMAIN}.${SQL_DOMAIN}"
fi
fi
done
done
fi
A_MAILCOW_HOSTNAME=$(dig A ${MAILCOW_HOSTNAME} +short | tail -n 1)
AAAA_MAILCOW_HOSTNAME=$(dig AAAA ${MAILCOW_HOSTNAME} +short | tail -n 1)
# Check if CNAME without v6 enabled target
if [[ ! -z ${AAAA_MAILCOW_HOSTNAME} ]] && [[ -z $(echo ${AAAA_MAILCOW_HOSTNAME} | grep "^\([0-9a-fA-F]\{0,4\}:\)\{1,7\}[0-9a-fA-F]\{0,4\}$") ]]; then
AAAA_MAILCOW_HOSTNAME=
fi
if [[ ! -z ${AAAA_MAILCOW_HOSTNAME} ]]; then
log_f "Found AAAA record for ${MAILCOW_HOSTNAME}: ${AAAA_MAILCOW_HOSTNAME} - skipping A record check"
if [[ $(expand ${IPV6:-"0000:0000:0000:0000:0000:0000:0000:0000"}) == $(expand ${AAAA_MAILCOW_HOSTNAME}) ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
if verify_challenge_path "${MAILCOW_HOSTNAME}" 6; then
log_f "Confirmed AAAA record ${AAAA_MAILCOW_HOSTNAME}"
VALIDATED_MAILCOW_HOSTNAME=${MAILCOW_HOSTNAME}
else
log_f "Confirmed AAAA record ${A_MAILCOW_HOSTNAME}, but HTTP validation failed"
fi
else
log_f "Cannot match your IP ${IPV6:-NO_IPV6_LINK} against hostname ${MAILCOW_HOSTNAME} ($(expand ${AAAA_MAILCOW_HOSTNAME}))"
fi
elif [[ ! -z ${A_MAILCOW_HOSTNAME} ]]; then
log_f "Found A record for ${MAILCOW_HOSTNAME}: ${A_MAILCOW_HOSTNAME}"
if [[ ${IPV4:-ERR} == ${A_MAILCOW_HOSTNAME} ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
if verify_challenge_path "${MAILCOW_HOSTNAME}" 4; then
log_f "Confirmed A record ${A_MAILCOW_HOSTNAME}"
VALIDATED_MAILCOW_HOSTNAME=${MAILCOW_HOSTNAME}
else
log_f "Confirmed A record ${A_MAILCOW_HOSTNAME}, but HTTP validation failed"
fi
else
log_f "Cannot match your IP ${IPV4} against hostname ${MAILCOW_HOSTNAME} (${A_MAILCOW_HOSTNAME})"
fi
else
log_f "No A or AAAA record found for hostname ${MAILCOW_HOSTNAME}"
fi
if [[ ${ONLY_MAILCOW_HOSTNAME} != "y" ]]; then
for SAN in "${ADDITIONAL_SAN_ARR[@]}"; do
# Skip on CAA errors for SAN
SAN_PARENT_DOMAIN=$(echo ${SAN} | cut -d. -f2-)
SAN_CAAS=( $(dig CAA ${SAN_PARENT_DOMAIN} +short | sed -n 's/\d issue "\(.*\)"/\1/p') )
if [[ ! -z ${SAN_CAAS} ]]; then
if [[ ${SAN_CAAS[@]} =~ "letsencrypt.org" ]]; then
echo "Validated CAA for parent domain ${SAN_PARENT_DOMAIN} of ${SAN}"
else
echo "Skipping ACME validation for ${SAN}: Lets Encrypt disallowed for ${SAN} by CAA record"
continue
fi
fi
if [[ ${SAN} == ${MAILCOW_HOSTNAME} ]]; then
continue
fi
A_SAN=$(dig A ${SAN} +short | tail -n 1)
AAAA_SAN=$(dig AAAA ${SAN} +short | tail -n 1)
# Check if CNAME without v6 enabled target
if [[ ! -z ${AAAA_SAN} ]] && [[ -z $(echo ${AAAA_SAN} | grep "^\([0-9a-fA-F]\{0,4\}:\)\{1,7\}[0-9a-fA-F]\{0,4\}$") ]]; then
AAAA_SAN=
fi
if [[ ! -z ${AAAA_SAN} ]]; then
log_f "Found AAAA record for ${SAN}: ${AAAA_SAN} - skipping A record check"
if [[ $(expand ${IPV6:-"0000:0000:0000:0000:0000:0000:0000:0000"}) == $(expand ${AAAA_SAN}) ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
if verify_challenge_path "${SAN}" 6; then
log_f "Confirmed AAAA record ${AAAA_SAN}"
ADDITIONAL_VALIDATED_SAN+=("${SAN}")
else
log_f "Confirmed AAAA record ${AAAA_SAN}, but HTTP validation failed"
fi
else
log_f "Cannot match your IP ${IPV6:-NO_IPV6_LINK} against hostname ${SAN} ($(expand ${AAAA_SAN}))"
fi
elif [[ ! -z ${A_SAN} ]]; then
log_f "Found A record for ${SAN}: ${A_SAN}"
if [[ ${IPV4:-ERR} == ${A_SAN} ]] || [[ ${SKIP_IP_CHECK} == "y" ]]; then
if verify_challenge_path "${SAN}" 4; then
log_f "Confirmed A record ${A_SAN}"
ADDITIONAL_VALIDATED_SAN+=("${SAN}")
else
log_f "Confirmed A record ${A_SAN}, but HTTP validation failed"
fi
else
log_f "Cannot match your IP ${IPV4} against hostname ${SAN} (${A_SAN})"
fi
else
log_f "No A or AAAA record found for hostname ${SAN}"
fi
done
fi
# Unique elements
ALL_VALIDATED=(${VALIDATED_MAILCOW_HOSTNAME} $(echo ${VALIDATED_CONFIG_DOMAINS[*]} ${ADDITIONAL_VALIDATED_SAN[*]} | xargs -n1 | sort -u | xargs))
if [[ -z ${ALL_VALIDATED[*]} ]]; then
log_f "Cannot validate hostnames, skipping Let's Encrypt for 1 hour."
log_f "Use SKIP_LETS_ENCRYPT=y in mailcow.conf to skip it permanently."
redis-cli -h redis SET ACME_FAIL_TIME "$(date +%s)"
sleep 1h
exec $(readlink -f "$0")
fi
# Collecting SANs from active certificate
SAN_NAMES=$(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}
fi
# Finding difference in SAN array now vs. SAN array by current configuration
array_diff ORPHANED_SAN SAN_ARRAY_NOW ALL_VALIDATED
if [[ ! -z ${ORPHANED_SAN[*]} ]]; then
log_f "Found orphaned SANs ${ORPHANED_SAN[*]}"
SAN_CHANGE=1
fi
array_diff ADDED_SAN ALL_VALIDATED SAN_ARRAY_NOW
if [[ ! -z ${ADDED_SAN[*]} ]]; then
log_f "Found new SANs ${ADDED_SAN[*]}"
SAN_CHANGE=1
fi
if [[ ${SAN_CHANGE} == 0 ]]; then
# Certificate did not change but could be due for renewal (4 weeks)
if ! openssl x509 -checkend 2592000 -noout -in ${ACME_BASE}/cert.pem; then
log_f "Certificate is due for renewal (< 30 days)"
else
log_f "Certificate validation done, neither changed nor due for renewal, sleeping for another day."
sleep 1d
continue
fi
fi
DATE=$(date +%Y-%m-%d_%H_%M_%S)
log_f "Creating backups in ${ACME_BASE}/backups/${DATE}/ ..."
mkdir -p ${ACME_BASE}/backups/${DATE}/
[[ -f ${ACME_BASE}/acme/acme.csr ]] && cp ${ACME_BASE}/acme/acme.csr ${ACME_BASE}/backups/${DATE}/
[[ -f ${ACME_BASE}/acme/cert.pem ]] && cp ${ACME_BASE}/acme/cert.pem ${ACME_BASE}/backups/${DATE}/
[[ -f ${ACME_BASE}/acme/key.pem ]] && cp ${ACME_BASE}/acme/key.pem ${ACME_BASE}/backups/${DATE}/
[[ -f ${ACME_BASE}/acme/account.pem ]] && cp ${ACME_BASE}/acme/account.pem ${ACME_BASE}/backups/${DATE}/
# Generating CSR
printf "[SAN]\nsubjectAltName=" > /tmp/_SAN
printf "DNS:%s," "${ALL_VALIDATED[@]}" >> /tmp/_SAN
sed -i '$s/,$//' /tmp/_SAN
openssl req -new -sha256 -key ${ACME_BASE}/acme/key.pem -subj "/" -reqexts SAN -config <(cat /etc/ssl/openssl.cnf /tmp/_SAN) > ${ACME_BASE}/acme/acme.csr
if [[ "${LE_STAGING}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
log_f "Using Let's Encrypt staging servers"
STAGING_PARAMETER='--directory-url https://acme-staging-v02.api.letsencrypt.org/directory'
else
STAGING_PARAMETER=
fi
# acme-tiny writes info to stderr and ceritifcate to stdout
# The redirects will do the following:
# - redirect stdout to temp certificate file
# - redirect acme-tiny stderr to stdout (logs to variable ACME_RESPONSE)
# - tee stderr to get live output and log to dockerd
ACME_RESPONSE=$(acme-tiny ${STAGING_PARAMETER} \
--account-key ${ACME_BASE}/acme/account.pem \
--disable-check \
--csr ${ACME_BASE}/acme/acme.csr \
--acme-dir /var/www/acme/ 2>&1 > /tmp/_cert.pem | tee /dev/fd/5)
case "$?" in
0) # cert requested
ACME_RESPONSE_B64=$(echo "${ACME_RESPONSE}" | openssl enc -e -A -base64)
log_f "${ACME_RESPONSE_B64}" redis_only b64
log_f "Deploying..."
# Deploy the new certificate and key
# Moving temp cert to acme/cert.pem
if verify_hash_match /tmp/_cert.pem ${ACME_BASE}/acme/key.pem; then
mv /tmp/_cert.pem ${ACME_BASE}/acme/cert.pem
cp ${ACME_BASE}/acme/cert.pem ${ACME_BASE}/cert.pem
cp ${ACME_BASE}/acme/key.pem ${ACME_BASE}/key.pem
reload_configurations
rm /var/www/acme/*
log_f "Certificate successfully deployed, removing backup, sleeping 1d"
sleep 1d
else
log_f "Certificate was successfully requested, but key and certificate have non-matching hashes, ignoring certificate"
log_f "Retrying in 30 minutes..."
sleep 30m
exec $(readlink -f "$0")
fi
;;
*) # non-zero is non-fun
ACME_RESPONSE_B64=$(echo "${ACME_RESPONSE}" | openssl enc -e -A -base64)
log_f "${ACME_RESPONSE_B64}" redis_only b64
log_f "Retrying in 30 minutes..."
redis-cli -h redis SET ACME_FAIL_TIME "$(date +%s)"
sleep 30m
exec $(readlink -f "$0")
;;
esac
done
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