422 lines
16 KiB
Bash
Executable File
422 lines
16 KiB
Bash
Executable File
#!/bin/bash
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set -o pipefail
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exec 5>&1
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# Do not attempt to write to slave
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if [[ ! -z ${REDIS_SLAVEOF_IP} ]]; then
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export REDIS_CMDLINE="redis-cli -h ${REDIS_SLAVEOF_IP} -p ${REDIS_SLAVEOF_PORT}"
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else
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export REDIS_CMDLINE="redis-cli -h redis -p 6379"
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fi
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until [[ $(${REDIS_CMDLINE} PING) == "PONG" ]]; do
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echo "Waiting for Redis..."
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sleep 2
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done
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source /srv/functions.sh
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# Thanks to https://github.com/cvmiller -> https://github.com/cvmiller/expand6
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source /srv/expand6.sh
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# Skipping IP check when we like to live dangerously
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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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# Skipping HTTP check when we like to live dangerously
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if [[ "${SKIP_HTTP_VERIFICATION}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
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SKIP_HTTP_VERIFICATION=y
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fi
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# Request certificate for MAILCOW_HOSTNAME only
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if [[ "${ONLY_MAILCOW_HOSTNAME}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
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ONLY_MAILCOW_HOSTNAME=y
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fi
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# Request individual certificate for every domain
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if [[ "${ENABLE_SSL_SNI}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
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ENABLE_SSL_SNI=y
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fi
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if [[ "${SKIP_LETS_ENCRYPT}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
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log_f "SKIP_LETS_ENCRYPT=y, skipping Let's Encrypt..."
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sleep 365d
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exec $(readlink -f "$0")
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fi
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log_f "Waiting for Docker API..."
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until ping dockerapi -c1 > /dev/null; do
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sleep 1
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done
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log_f "Docker API OK"
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log_f "Waiting for Postfix..."
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until ping postfix -c1 > /dev/null; do
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sleep 1
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done
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log_f "Postfix OK"
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log_f "Waiting for Dovecot..."
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until ping dovecot -c1 > /dev/null; do
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sleep 1
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done
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log_f "Dovecot OK"
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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
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# Migrate
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[[ -f ${ACME_BASE}/acme/private/privkey.pem ]] && mv ${ACME_BASE}/acme/private/privkey.pem ${ACME_BASE}/acme/key.pem
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[[ -f ${ACME_BASE}/acme/private/account.key ]] && mv ${ACME_BASE}/acme/private/account.key ${ACME_BASE}/acme/account.pem
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if [[ -f ${ACME_BASE}/acme/key.pem && -f ${ACME_BASE}/acme/cert.pem ]]; then
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if verify_hash_match ${ACME_BASE}/acme/cert.pem ${ACME_BASE}/acme/key.pem; then
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log_f "Migrating to SNI folder structure..."
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CERT_DOMAIN=($(openssl x509 -noout -text -in ${ACME_BASE}/acme/cert.pem | grep "Subject:" | sed -e 's/\(Subject:\)\|\(CN = \)\|\(CN=\)//g' | sed -e 's/^[[:space:]]*//'))
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CERT_DOMAINS=(${CERT_DOMAIN} $(openssl x509 -noout -text -in ${ACME_BASE}/acme/cert.pem | grep "DNS:" | sed -e 's/\(DNS:\)\|,//g' | sed "s/${CERT_DOMAIN}//" | sed -e 's/^[[:space:]]*//'))
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mkdir -p ${ACME_BASE}/${CERT_DOMAIN}
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mv ${ACME_BASE}/acme/cert.pem ${ACME_BASE}/${CERT_DOMAIN}/cert.pem
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# key is only copied, not moved, because it is used by all other requests too
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cp ${ACME_BASE}/acme/key.pem ${ACME_BASE}/${CERT_DOMAIN}/key.pem
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chmod 600 ${ACME_BASE}/${CERT_DOMAIN}/key.pem
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echo -n ${CERT_DOMAINS[*]} > ${ACME_BASE}/${CERT_DOMAIN}/domains
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mv ${ACME_BASE}/acme/acme.csr ${ACME_BASE}/${CERT_DOMAIN}/acme.csr
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log_f "OK" no_date
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fi
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fi
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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 ]] && [[ $(stat -c%s ${ACME_BASE}/cert.pem) != 0 ]]; then
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ISSUER=$(openssl x509 -in ${ACME_BASE}/cert.pem -noout -issuer)
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if [[ ${ISSUER} != *"Let's Encrypt"* && ${ISSUER} != *"mailcow"* && ${ISSUER} != *"Fake LE Intermediate"* ]]; then
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log_f "Found certificate with issuer other than mailcow snake-oil CA and Let's Encrypt, skipping ACME client..."
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sleep 3650d
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exec $(readlink -f "$0")
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fi
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else
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if [[ -f ${ACME_BASE}/${MAILCOW_HOSTNAME}/cert.pem ]] && [[ -f ${ACME_BASE}/${MAILCOW_HOSTNAME}/key.pem ]] && verify_hash_match ${ACME_BASE}/${MAILCOW_HOSTNAME}/cert.pem ${ACME_BASE}/${MAILCOW_HOSTNAME}/key.pem; then
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log_f "Restoring previous acme certificate and restarting script..."
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cp ${ACME_BASE}/${MAILCOW_HOSTNAME}/cert.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/${MAILCOW_HOSTNAME}/key.pem ${ACME_BASE}/key.pem
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# Restarting with env var set to trigger a restart,
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exec env TRIGGER_RESTART=1 $(readlink -f "$0")
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else
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log_f "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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chmod 600 ${ACME_BASE}/key.pem
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log_f "Waiting for database..."
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while ! mysqladmin status --socket=/var/run/mysqld/mysqld.sock -u${DBUSER} -p${DBPASS} --silent > /dev/null; do
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sleep 2
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done
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log_f "Database OK"
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log_f "Waiting for Nginx..."
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until $(curl --output /dev/null --silent --head --fail http://nginx:8081); do
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sleep 2
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done
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log_f "Nginx OK"
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log_f "Waiting for resolver..."
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until dig letsencrypt.org +time=3 +tries=1 @unbound > /dev/null; do
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sleep 2
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done
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log_f "Resolver OK"
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# Waiting for domain table
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log_f "Waiting for domain table..."
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while [[ -z ${DOMAIN_TABLE} ]]; do
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curl --silent http://nginx/ >/dev/null 2>&1
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DOMAIN_TABLE=$(mysql --socket=/var/run/mysqld/mysqld.sock -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "SHOW TABLES LIKE 'domain'" -Bs)
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[[ -z ${DOMAIN_TABLE} ]] && sleep 10
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done
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log_f "OK" no_date
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log_f "Initializing, please wait..."
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while true; do
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POSTFIX_CERT_SERIAL="$(echo | openssl s_client -connect postfix:25 -starttls smtp 2>/dev/null | openssl x509 -inform pem -noout -serial | cut -d "=" -f 2)"
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DOVECOT_CERT_SERIAL="$(echo | openssl s_client -connect dovecot:143 -starttls imap 2>/dev/null | openssl x509 -inform pem -noout -serial | cut -d "=" -f 2)"
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POSTFIX_CERT_SERIAL_NEW="$(echo | openssl s_client -connect postfix:25 -starttls smtp 2>/dev/null | openssl x509 -inform pem -noout -serial | cut -d "=" -f 2)"
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DOVECOT_CERT_SERIAL_NEW="$(echo | openssl s_client -connect dovecot:143 -starttls imap 2>/dev/null | openssl x509 -inform pem -noout -serial | cut -d "=" -f 2)"
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# Re-using previous acme-mailcow account and domain keys
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if [[ ! -f ${ACME_BASE}/acme/key.pem ]]; then
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log_f "Generating missing domain private rsa key..."
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openssl genrsa 4096 > ${ACME_BASE}/acme/key.pem
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else
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log_f "Using existing domain rsa key ${ACME_BASE}/acme/key.pem"
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fi
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if [[ ! -f ${ACME_BASE}/acme/account.pem ]]; then
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log_f "Generating missing Lets Encrypt account key..."
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if [[ ! -z ${ACME_CONTACT} ]]; then
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if ! verify_email "${ACME_CONTACT}"; then
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log_f "Invalid email address, will not start registration!"
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sleep 365d
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exec $(readlink -f "$0")
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else
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ACME_CONTACT_PARAMETER="--contact mailto:${ACME_CONTACT}"
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log_f "Valid email address, using ${ACME_CONTACT} for registration"
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fi
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else
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ACME_CONTACT_PARAMETER=""
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fi
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openssl genrsa 4096 > ${ACME_BASE}/acme/account.pem
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else
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log_f "Using existing Lets Encrypt account key ${ACME_BASE}/acme/account.pem"
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fi
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chmod 600 ${ACME_BASE}/acme/key.pem
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chmod 600 ${ACME_BASE}/acme/account.pem
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unset EXISTING_CERTS
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declare -a EXISTING_CERTS
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for cert_dir in ${ACME_BASE}/*/ ; do
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if [[ ! -f ${cert_dir}domains ]] || [[ ! -f ${cert_dir}cert.pem ]] || [[ ! -f ${cert_dir}key.pem ]]; then
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continue
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fi
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EXISTING_CERTS+=("$(basename ${cert_dir})")
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done
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# Cleaning up and init validation arrays
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unset SQL_DOMAIN_ARR
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unset VALIDATED_CONFIG_DOMAINS
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unset ADDITIONAL_VALIDATED_SAN
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unset ADDITIONAL_WC_ARR
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unset ADDITIONAL_SAN_ARR
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unset CERT_ERRORS
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unset CERT_CHANGED
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unset CERT_AMOUNT_CHANGED
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unset VALIDATED_CERTIFICATES
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CERT_ERRORS=0
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CERT_CHANGED=0
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CERT_AMOUNT_CHANGED=0
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declare -a SQL_DOMAIN_ARR
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declare -a VALIDATED_CONFIG_DOMAINS
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declare -a ADDITIONAL_VALIDATED_SAN
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declare -a ADDITIONAL_WC_ARR
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declare -a ADDITIONAL_SAN_ARR
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declare -a VALIDATED_CERTIFICATES
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IFS=',' read -r -a TMP_ARR <<< "${ADDITIONAL_SAN}"
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for i in "${TMP_ARR[@]}" ; do
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if [[ "$i" =~ \.\*$ ]]; then
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ADDITIONAL_WC_ARR+=(${i::-2})
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else
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ADDITIONAL_SAN_ARR+=($i)
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fi
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done
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ADDITIONAL_WC_ARR+=('autodiscover' 'autoconfig')
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# Start IP detection
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log_f "Detecting IP addresses..."
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IPV4=$(get_ipv4)
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IPV6=$(get_ipv6)
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log_f "OK: ${IPV4}, ${IPV6:-"0000:0000:0000:0000:0000:0000:0000:0000"}"
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#########################################
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# IP and webroot challenge verification #
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SQL_DOMAINS=$(mysql --socket=/var/run/mysqld/mysqld.sock -u ${DBUSER} -p${DBPASS} ${DBNAME} -e "SELECT domain FROM domain WHERE backupmx=0 and active=1" -Bs)
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if [[ ! $? -eq 0 ]]; then
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log_f "Failed to read SQL domains, retrying in 1 minute..."
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sleep 1m
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exec $(readlink -f "$0")
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fi
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while read domains; do
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if [[ -z "${domains}" ]]; then
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# ignore empty lines
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continue
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fi
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SQL_DOMAIN_ARR+=("${domains}")
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done <<< "${SQL_DOMAINS}"
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if [[ ${ONLY_MAILCOW_HOSTNAME} != "y" ]]; then
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for SQL_DOMAIN in "${SQL_DOMAIN_ARR[@]}"; do
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unset VALIDATED_CONFIG_DOMAINS_SUBDOMAINS
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declare -a VALIDATED_CONFIG_DOMAINS_SUBDOMAINS
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for SUBDOMAIN in "${ADDITIONAL_WC_ARR[@]}"; do
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if [[ "${SUBDOMAIN}.${SQL_DOMAIN}" != "${MAILCOW_HOSTNAME}" ]]; then
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if check_domain "${SUBDOMAIN}.${SQL_DOMAIN}"; then
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VALIDATED_CONFIG_DOMAINS_SUBDOMAINS+=("${SUBDOMAIN}.${SQL_DOMAIN}")
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fi
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fi
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done
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VALIDATED_CONFIG_DOMAINS+=("${VALIDATED_CONFIG_DOMAINS_SUBDOMAINS[*]}")
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done
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fi
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if check_domain ${MAILCOW_HOSTNAME}; then
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VALIDATED_MAILCOW_HOSTNAME="${MAILCOW_HOSTNAME}"
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fi
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if [[ ${ONLY_MAILCOW_HOSTNAME} != "y" ]]; then
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for SAN in "${ADDITIONAL_SAN_ARR[@]}"; do
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# Skip on CAA errors for SAN
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SAN_PARENT_DOMAIN=$(echo ${SAN} | cut -d. -f2-)
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SAN_CAAS=( $(dig CAA ${SAN_PARENT_DOMAIN} +short | sed -n 's/\d issue "\(.*\)"/\1/p') )
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if [[ ! -z ${SAN_CAAS} ]]; then
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if [[ ${SAN_CAAS[@]} =~ "letsencrypt.org" ]]; then
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log_f "Validated CAA for parent domain ${SAN_PARENT_DOMAIN} of ${SAN}"
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else
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log_f "Skipping ACME validation for ${SAN}: Lets Encrypt disallowed for ${SAN} by CAA record"
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continue
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fi
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fi
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if [[ ${SAN} == ${MAILCOW_HOSTNAME} ]]; then
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continue
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fi
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if check_domain ${SAN}; then
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ADDITIONAL_VALIDATED_SAN+=("${SAN}")
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fi
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done
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fi
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# Unique domains for server certificate
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if [[ ${ENABLE_SSL_SNI} == "y" ]]; then
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# create certificate for server name and fqdn SANs only
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SERVER_SAN_VALIDATED=(${VALIDATED_MAILCOW_HOSTNAME} $(echo ${ADDITIONAL_VALIDATED_SAN[*]} | xargs -n1 | sort -u | xargs))
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else
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# create certificate for all domains, including all subdomains from other domains [*]
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SERVER_SAN_VALIDATED=(${VALIDATED_MAILCOW_HOSTNAME} $(echo ${VALIDATED_CONFIG_DOMAINS[*]} ${ADDITIONAL_VALIDATED_SAN[*]} | xargs -n1 | sort -u | xargs))
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fi
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if [[ ! -z ${SERVER_SAN_VALIDATED[*]} ]]; then
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CERT_NAME=${SERVER_SAN_VALIDATED[0]}
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VALIDATED_CERTIFICATES+=("${CERT_NAME}")
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# obtain server certificate if required
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ACME_CONTACT_PARAMETER=${ACME_CONTACT_PARAMETER} DOMAINS=${SERVER_SAN_VALIDATED[@]} /srv/obtain-certificate.sh rsa
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RETURN="$?"
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if [[ "$RETURN" == "0" ]]; then # 0 = cert created successfully
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CERT_AMOUNT_CHANGED=1
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CERT_CHANGED=1
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elif [[ "$RETURN" == "1" ]]; then # 1 = cert renewed successfully
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CERT_CHANGED=1
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elif [[ "$RETURN" == "2" ]]; then # 2 = cert not due for renewal
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:
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else
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CERT_ERRORS=1
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fi
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# copy hostname certificate to default/server certificate
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# do not a key when cert is missing, this can lead to a mismatch of cert/key
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if [[ -f ${ACME_BASE}/${CERT_NAME}/cert.pem ]]; then
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cp ${ACME_BASE}/${CERT_NAME}/cert.pem ${ACME_BASE}/cert.pem
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cp ${ACME_BASE}/${CERT_NAME}/key.pem ${ACME_BASE}/key.pem
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fi
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fi
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# individual certificates for SNI [@]
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if [[ ${ENABLE_SSL_SNI} == "y" ]]; then
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for VALIDATED_DOMAINS in "${VALIDATED_CONFIG_DOMAINS[@]}"; do
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VALIDATED_DOMAINS_ARR=(${VALIDATED_DOMAINS})
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unset VALIDATED_DOMAINS_SORTED
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declare -a VALIDATED_DOMAINS_SORTED
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VALIDATED_DOMAINS_SORTED=(${VALIDATED_DOMAINS_ARR[0]} $(echo ${VALIDATED_DOMAINS_ARR[@]:1} | xargs -n1 | sort -u | xargs))
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# remove all domain names that are already inside the server certificate (SERVER_SAN_VALIDATED)
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for domain in "${SERVER_SAN_VALIDATED[@]}"; do
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for i in "${!VALIDATED_DOMAINS_SORTED[@]}"; do
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if [[ ${VALIDATED_DOMAINS_SORTED[i]} = $domain ]]; then
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unset 'VALIDATED_DOMAINS_SORTED[i]'
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fi
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done
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done
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if [[ ! -z ${VALIDATED_DOMAINS_SORTED[*]} ]]; then
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CERT_NAME=${VALIDATED_DOMAINS_SORTED[0]}
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VALIDATED_CERTIFICATES+=("${CERT_NAME}")
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# obtain certificate if required
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DOMAINS=${VALIDATED_DOMAINS_SORTED[@]} /srv/obtain-certificate.sh rsa
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RETURN="$?"
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if [[ "$RETURN" == "0" ]]; then # 0 = cert created successfully
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CERT_AMOUNT_CHANGED=1
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CERT_CHANGED=1
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elif [[ "$RETURN" == "1" ]]; then # 1 = cert renewed successfully
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CERT_CHANGED=1
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elif [[ "$RETURN" == "2" ]]; then # 2 = cert not due for renewal
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:
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else
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CERT_ERRORS=1
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fi
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fi
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done
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fi
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if [[ -z ${VALIDATED_CERTIFICATES[*]} ]]; then
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log_f "Cannot validate any hostnames, skipping Let's Encrypt for 1 hour."
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log_f "Use SKIP_LETS_ENCRYPT=y in mailcow.conf to skip it permanently."
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${REDIS_CMDLINE} SET ACME_FAIL_TIME "$(date +%s)"
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sleep 1h
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exec $(readlink -f "$0")
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fi
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# find orphaned certificates if no errors occurred
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if [[ "${CERT_ERRORS}" == "0" ]]; then
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for EXISTING_CERT in "${EXISTING_CERTS[@]}"; do
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if [[ ! "`printf '_%s_\n' "${VALIDATED_CERTIFICATES[@]}"`" == *"_${EXISTING_CERT}_"* ]]; then
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DATE=$(date +%Y-%m-%d_%H_%M_%S)
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log_f "Found orphaned certificate: ${EXISTING_CERT} - archiving it at ${ACME_BASE}/backups/${EXISTING_CERT}/"
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BACKUP_DIR=${ACME_BASE}/backups/${EXISTING_CERT}/${DATE}
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# archive rsa cert and any other files
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mkdir -p ${ACME_BASE}/backups/${EXISTING_CERT}
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mv ${ACME_BASE}/${EXISTING_CERT} ${BACKUP_DIR}
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CERT_CHANGED=1
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CERT_AMOUNT_CHANGED=1
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fi
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done
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fi
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# reload on new or changed certificates
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if [[ "${CERT_CHANGED}" == "1" ]]; then
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rm -f "${ACME_BASE}/force_renew" 2> /dev/null
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RELOAD_LOOP_C=1
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while [[ "${POSTFIX_CERT_SERIAL}" == "${POSTFIX_CERT_SERIAL_NEW}" ]] || [[ "${DOVECOT_CERT_SERIAL}" == "${DOVECOT_CERT_SERIAL_NEW}" ]] || [[ ${#POSTFIX_CERT_SERIAL_NEW} -ne 36 ]] || [[ ${#DOVECOT_CERT_SERIAL_NEW} -ne 36 ]]; do
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log_f "Reloading or restarting services... (${RELOAD_LOOP_C})"
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RELOAD_LOOP_C=$((RELOAD_LOOP_C + 1))
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CERT_AMOUNT_CHANGED=${CERT_AMOUNT_CHANGED} /srv/reload-configurations.sh
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log_f "Waiting for containers to settle..."
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sleep 10
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until nc -z dovecot 143; do
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sleep 1
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done
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until nc -z postfix 25; do
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sleep 1
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done
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POSTFIX_CERT_SERIAL_NEW="$(echo | openssl s_client -connect postfix:25 -starttls smtp 2>/dev/null | openssl x509 -inform pem -noout -serial | cut -d "=" -f 2)"
|
|
DOVECOT_CERT_SERIAL_NEW="$(echo | openssl s_client -connect dovecot:143 -starttls imap 2>/dev/null | openssl x509 -inform pem -noout -serial | cut -d "=" -f 2)"
|
|
if [[ ${RELOAD_LOOP_C} -gt 3 ]]; then
|
|
log_f "Some services do return old end dates, something went wrong!"
|
|
${REDIS_CMDLINE} SET ACME_FAIL_TIME "$(date +%s)"
|
|
break;
|
|
fi
|
|
done
|
|
fi
|
|
|
|
case "$CERT_ERRORS" in
|
|
0) # all successful
|
|
if [[ "${CERT_CHANGED}" == "1" ]]; then
|
|
if [[ "${CERT_AMOUNT_CHANGED}" == "1" ]]; then
|
|
log_f "Certificates successfully requested and renewed where required, sleeping one day"
|
|
else
|
|
log_f "Certificates were successfully renewed where required, sleeping for another day."
|
|
fi
|
|
else
|
|
log_f "Certificates were successfully validated, no changes or renewals required, sleeping for another day."
|
|
fi
|
|
sleep 1d
|
|
;;
|
|
*) # non-zero
|
|
log_f "Some errors occurred, retrying in 30 minutes..."
|
|
${REDIS_CMDLINE} SET ACME_FAIL_TIME "$(date +%s)"
|
|
sleep 30m
|
|
exec $(readlink -f "$0")
|
|
;;
|
|
esac
|
|
|
|
done
|