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Evoacme: refactoring

* add a lot of variables, to reduce possible typos
* add a lot of debug statements
* add many comments and line breaks for readability
* extract functions for complex openssl commands
* explode the big certbot command into multiple lines
* allow certbot to make test certs (for API query limits)
* allow certbot to run in "dry run" mode
* regroup some lines together when they do related things
evolinux-users
Jérémy Lecour 4 years ago
parent
commit
0d0c21f908
  1. 217
      evoacme/files/evoacme.sh

217
evoacme/files/evoacme.sh

@ -28,16 +28,36 @@ error() {
exit 1
}
mkconf_apache() {
debug "Apache detected... first configuration"
[ -f "/etc/apache2/ssl/${vhost}.conf" ] && sed -i "s~^SSLCertificateFile.*$~SSLCertificateFile $CRT_DIR/${vhost}/live/fullchain.pem~" "/etc/apache2/ssl/${vhost}.conf"
apache2ctl -t
change_cert_path_for_apache() {
vhost=$1
vhost_full_path="/etc/apache2/ssl/${vhost}.conf"
cert_path=$2
debug "Apache detected... first configuration in ${vhost_full_path}"
[ -f "${vhost_full_path}" ] && sed -i "s~^SSLCertificateFile.*$~SSLCertificateFile ${cert_path}~" "${vhost_full_path}"
${APACHE2CTL_BIN} -t
}
mkconf_nginx() {
debug "Nginx detected... first configuration"
[ -f "/etc/nginx/ssl/${vhost}.conf" ] && sed -i "s~^ssl_certificate[^_].*$~ssl_certificate $CRT_DIR/${vhost}/live/fullchain.pem;~" "/etc/nginx/ssl/${vhost}.conf"
nginx -t
change_cert_path_for_nginx() {
vhost=$1
vhost_full_path="/etc/nginx/ssl/${vhost}.conf"
cert_path=$2
debug "Nginx detected... first configuration in ${vhost_full_path}"
[ -f "${vhost_full_path}" ] && sed -i "s~^ssl_certificate[^_].*$~ssl_certificate ${cert_path};~" "${vhost_full_path}"
${NGINX_BIN} -t
}
x509_verify() {
file=$1
${OPENSSL_BIN} x509 -noout -modulus -in "${file}" >/dev/null
}
x509_enddate() {
file=$1
${OPENSSL_BIN} x509 -noout -enddate -in "${file}"
}
main() {
@ -51,87 +71,168 @@ main() {
[ -z "${SELF_SIGNED_DIR}" ] && SELF_SIGNED_DIR=/etc/ssl/self-signed
[ -z "${DH_DIR}" ] && DH_DIR=etc/ssl/dhparam
# misc verifications
[ "$1" = "-h" ] || [ "$1" = "--help" ] && usage && exit 0
which openssl >/dev/null || error "openssl command not installed"
which certbot >/dev/null || error "certbot command not installed"
[ ! -d $ACME_DIR ] && error "$ACME_DIR is not a directory"
[ ! -d $CSR_DIR ] && error "$CSR_DIR is not a directory"
[ ! -d $LOG_DIR ] && error "$LOG_DIR is not a directory"
# check arguments
[ "$#" -ge 3 ] || [ "$#" -le 0 ] && error "invalid argument(s)"
[ "$#" -eq 2 ] && [ "$1" != "--cron" ] && error "invalid argument(s)"
[ "$#" -eq 1 ] && vhost=$(basename "$1" .conf) && CRON=NO
[ "$#" -eq 2 ] && vhost=$(basename "$2" .conf) && CRON=YES
[ "$#" -eq 1 ] && VHOST=$(basename "$1" .conf) && CRON=NO
[ "$#" -eq 2 ] && VHOST=$(basename "$2" .conf) && CRON=YES
# check for important programs
OPENSSL_BIN=$(command -v openssl)
if [ "$?" -eq 0 ]; then
error "openssl command not installed"
fi
CERTBOT_BIN=$(command -v certbot)
if [ "$?" -eq 0 ]; then
error "certbot command not installed"
fi
APACHE2CTL_BIN=$(command -v apache2ctl)
NGINX_BIN=$(command -v nginx)
# double check for directories
[ ! -d "${ACME_DIR}" ] && error "${ACME_DIR} is not a directory"
[ ! -d "${CSR_DIR}" ] && error "${CSR_DIR} is not a directory"
[ ! -d "${LOG_DIR} "] && error "${LOG_DIR} is not a directory"
#### CSR VALIDATION
# verify .csr file
[ ! -f "$CSR_DIR/${vhost}.csr" ] && error "$CSR_DIR/${vhost}.csr absent"
[ ! -r "$CSR_DIR/${vhost}.csr" ] && error "$C´SR_DIR/${vhost}.csr is not readable"
openssl req -noout -modulus -in "$CSR_DIR/${vhost}.csr" >/dev/null || error "$CSR_DIR/${vhost}.csr is invalid"
debug "Using CSR file: $CSR_DIR/${vhost}.csr"
CSR_FILE="${CSR_DIR}/${VHOST}.csr"
debug "Using CSR file: ${CSR_FILE}"
[ ! -f "${CSR_FILE}" ] && error "${CSR_FILE} absent"
[ ! -r "${CSR_FILE}" ] && error "${CSR_FILE} is not readable"
x509_verify "${CSR_FILE}" || error "${CSR_FILE} is invalid"
# Hook for evoadmin-web in cluster mode : check master status
if [ -f "/home/${vhost}/state" ]; then
grep -q "STATE=master" "/home/${vhost}/state" || exit 0
evoadmin_state_file="/home/${VHOST}/state"
if [ -f "${evoadmin_state_file}" ]; then
grep -q "STATE=master" "${evoadmin_state_file}"
if [ "$?" != 0 ]; then
debug "We are not the master of this evoadmin cluster. Quit!"
exit 0
fi
fi
if [ -n "$SSL_EMAIL" ]; then
emailopt="-m $SSL_EMAIL"
#### INIT OR RENEW?
LIVE_DIR="${CRT_DIR}/${VHOST}/live"
LIVE_CERT="${LIVE_DIR}/cert.crt"
LIVE_FULLCHAIN="${LIVE_DIR}/fullchain.pem"
LIVE_CHAIN="${LIVE_DIR}/chain.pem"
# If live symlink already exists, it's not our first time...
if [ -h "${LIVE_DIR}" ]; then
# we have a live symlink
# let's see if there is a cert to renew
x509_verify "${LIVE_CERT}" || error "${LIVE_CERT} is invalid"
# Verify if our certificate will expire
crt_end_date=$(x509_enddate "${LIVE_CERT}" | cut -d= -f2)
date_renew=$(date -ud "${crt_end_date} - ${SSL_MINDAY} days" +"%s")
date_today=$(date +'%s')
if [ "${date_today}" -lt "${date_renew}" ]; then
debug "Cert ${LIVE_CERT} expires at ${crt_end_date} => more than ${SSL_MINDAY} days: kthxbye."
exit 0
fi
else
emailopt="--register-unsafely-without-email"
# We don't have a live symlink yet
# Let's start from scratch and configure our web server(s)
if [ -n "${APACHE2CTL_BIN}" ]; then
change_cert_path_for_apache "${VHOST}" "${LIVE_FULLCHAIN}"
fi
if [ -n "${NGINX_BIN}" ]; then
change_cert_path_for_nginx "${VHOST}" "${LIVE_FULLCHAIN}"
fi
fi
DATE=$(date "+%Y%m%d")
[ ! -n "$DATE" ] && error "invalid date"
#### CERTIFICATE CREATION WITH CERTBOT
ITERATION=$(date "+%Y%m%d")
[ -z "${ITERATION}" ] && error "invalid iteration (${ITERATION})"
# If live link already exists, it's not our first time...
if [ -h "$CRT_DIR/${vhost}/live" ]; then
openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/live/cert.crt" >/dev/null || error "$CRT_DIR/${vhost}/live/cert.crt is invalid"
NEW_DIR="${CRT_DIR}/${VHOST}/${ITERATION}"
# Verify if our certificate will expire
crt_end_date=$(openssl x509 -noout -enddate -in "$CRT_DIR/${vhost}/live/cert.crt" | cut -d= -f2)
date_renew=$(date -ud "$crt_end_date - $SSL_MINDAY days" +"%s")
date_today=$(date +'%s')
[ "$date_today" -lt "$date_renew" ] && debug "Cert $CRT_DIR/${vhost}/live/cert.crt expires at $crt_end_date => more than $SSL_MINDAY days: thxbye." && exit 0
[ -d "${NEW_DIR}" ] && error "${NEW_DIR} directory already exists, remove it manually."
mkdir -pm 755 "${NEW_DIR}"
chown -R acme: "${NEW_DIR}"
debug "New cert will be created in ${NEW_DIR}"
NEW_CERT="${NEW_DIR}/cert.crt"
NEW_FULLCHAIN="${NEW_DIR}/fullchain.pem"
NEW_CHAIN="${NEW_DIR}/chain.pem"
CERTBOT_MODE=""
[ "$TEST" = "YES" ] && CERTBOT_MODE="${CERTBOT_MODE} --test-cert"
[ "$CRON" = "YES" ] && CERTBOT_MODE="${CERTBOT_MODE} --quiet"
[ "$DRY_RUN" = "YES" ] && CERTBOT_MODE="${CERTBOT_MODE} --dry-run"
CERTBOT_REGISTRATION="--agree-tos"
if [ -n "${SSL_EMAIL}" ]; then
debug "Registering at certbot with ${SSL_EMAIL} as email"
CERTBOT_REGISTRATION="${CERTBOT_REGISTRATION} -m ${SSL_EMAIL}"
else
which apache2ctl >/dev/null && mkconf_apache
which nginx >/dev/null && mkconf_nginx
debug "Registering at certbot without email"
CERTBOT_REGISTRATION="${CERTBOT_REGISTRATION} --register-unsafely-without-email"
fi
# renew certificate with certbot
[ -d "$CRT_DIR/${vhost}/${DATE}" ] && error "$CRT_DIR/${vhost}/${DATE} directory already exists, remove it manually."
mkdir -pm 755 "$CRT_DIR/${vhost}/${DATE}"
chown -R acme: "$CRT_DIR/${vhost}/${DATE}"
[ "$CRON" = "YES" ] && CERTBOT_OPTS="--quiet"
sudo -u acme certbot certonly $CERTBOT_OPTS --webroot --csr "$CSR_DIR/${vhost}.csr" --webroot-path "$ACME_DIR" -n --agree-tos --cert-path="$CRT_DIR/${vhost}/${DATE}/cert.crt" --fullchain-path="$CRT_DIR/${vhost}/${DATE}/fullchain.pem" --chain-path="$CRT_DIR/${vhost}/${DATE}/chain.pem" "$emailopt" --logs-dir "$LOG_DIR" 2>&1 | grep -v "certbot.crypto_util"
# create a certificate with certbot
sudo -u acme ${CERTBOT_BIN} \
certonly \
${CERTBOT_MODE} \
${CERTBOT_REGISTRATION} \
--non-interactive \
--webroot \
--csr "${CSR_FILE}" \
--webroot-path "${ACME_DIR}" \
--cert-path "${NEW_CERT}" \
--fullchain-path "${NEW_FULLCHAIN}" \
--chain-path "${NEW_CHAIN}" \
--logs-dir "$LOG_DIR" \
2>&1 \
| grep -v "certbot.crypto_util"
# verify if all is right
openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/${DATE}/cert.crt" >/dev/null || error "new $CRT_DIR/${vhost}/${DATE}/cert.crt is invalid"
openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/${DATE}/fullchain.pem" >/dev/null || error "new $CRT_DIR/${vhost}/${DATE}/fullchain.pem is invalid"
openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/${DATE}/chain.pem" >/dev/null || error "new $CRT_DIR/${vhost}/${DATE}/chain.pem is invalid"
x509_verify "${NEW_CERT}" || error "${NEW_CERT} is invalid"
x509_verify "${NEW_FULLCHAIN}" || error "${NEW_FULLCHAIN} is invalid"
x509_verify "${NEW_CHAIN}" || error "${NEW_CHAIN} is invalid"
#### CERTIFICATE ACTIVATION
# link dance
[ -h "$CRT_DIR/${vhost}/live" ] && rm "$CRT_DIR/${vhost}/live"
ln -s "$CRT_DIR/${vhost}/${DATE}" "$CRT_DIR/${vhost}/live"
openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/live/cert.crt" >/dev/null || error "new $CRT_DIR/{vhost}/live/cert.crt is invalid"
if [ -h "${LIVE_DIR}" ]; then
rm "${LIVE_DIR}"
debug "Remove ${LIVE_DIR} link"
fi
ln -s "${NEW_DIR}" "${LIVE_DIR}"
debug "Link ${NEW_DIR} to ${LIVE_DIR}"
# verify final path
x509_verify "${LIVE_CERT}" || error "${LIVE_CERT} is invalid"
# reload apache or nginx
# disable error catching
# below this point anything can break
set +e
pidof apache2 >/dev/null
if [ "$?" -eq 0 ]; then
apache2ctl -t 2>/dev/null
# reload apache if present
if [ -n "$(pidof apache2)" ]; then
${APACHE2CTL_BIN} -t 2>/dev/null
if [ "$?" -eq 0 ]; then
debug "Apache detected... reloading" && service apache2 reload
debug "Apache detected... reloading"
service apache2 reload
else
error "Apache config is broken, you must fix it !"
fi
fi
pidof nginx >/dev/null
if [ "$?" -eq 0 ]; then
nginx -t 2>/dev/null
# reload nginx if present
if [ -n "$(pidof nginx)" ]; then
${NGINX_BIN} -t 2>/dev/null
if [ "$?" -eq 0 ]; then
debug "Nginx detected... reloading" && service nginx reload
debug "Nginx detected... reloading"
service nginx reload
else
error "Nginx config is broken, you must fix it !"
fi

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