126 lines
5.4 KiB
Bash
Executable file
126 lines
5.4 KiB
Bash
Executable file
#!/bin/sh
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#
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# evoacme is a shell script to manage Let's Encrypt certificate with
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# certbot tool but with a dedicated user (no-root) and from a csr
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#
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# Author: Victor Laborie <vlaborie@evolix.fr>
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# Licence: AGPLv3
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#
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set -e
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usage() {
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echo "Usage: $0 [ --cron ] NAME"
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echo ""
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echo "NAME must be correspond to :"
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echo "- a CSR in ${CSR_DIR}/NAME.csr"
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echo "- a KEY in ${SSL_KEY_DIR}/NAME.key"
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echo ""
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}
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debug() {
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[ "$CRON" = "NO" ] && echo "$1"
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}
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error() {
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echo "error: $1" >&2
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[ "$1" = "invalid argument(s)" ] && usage
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exit 1
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}
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mkconf_apache() {
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debug "Apache detected... first configuration"
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[ -f "/etc/apache2/ssl/${vhost}.conf" ] && sed -i "s~^SSLCertificateFile.*$~SSLCertificateFile $CRT_DIR/${vhost}/live/fullchain.pem~" "/etc/apache2/ssl/${vhost}.conf"
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apache2ctl -t
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}
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mkconf_nginx() {
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debug "Nginx detected... first configuration"
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[ -f "/etc/nginx/ssl/${vhost}.conf" ] && sed -i "s~^ssl_certificate[^_].*$~ssl_certificate $CRT_DIR/${vhost}/live/fullchain.pem;~" "/etc/nginx/ssl/${vhost}.conf"
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nginx -t
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}
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main() {
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[ -f /etc/default/evoacme ] && . /etc/default/evoacme
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[ -z "${SSL_KEY_DIR}" ] && SSL_KEY_DIR=/etc/ssl/private
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[ -z "${ACME_DIR}" ] && ACME_DIR=/var/lib/letsencrypt
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[ -z "${CSR_DIR}" ] && CSR_DIR=/etc/ssl/requests
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[ -z "${CRT_DIR}" ] && CRT_DIR=/etc/letsencrypt
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[ -z "${LOG_DIR}" ] && LOG_DIR=/var/log/evoacme
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[ -z "${SSL_MINDAY}" ] && SSL_MINDAY=30
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[ -z "${SELF_SIGNED_DIR}" ] && SELF_SIGNED_DIR=/etc/ssl/self-signed
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[ -z "${DH_DIR}" ] && DH_DIR=etc/ssl/dhparam
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# misc verifications
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[ "$1" = "-h" ] || [ "$1" = "--help" ] && usage && exit 0
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which openssl >/dev/null || error "openssl command not installed"
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which certbot >/dev/null || error "certbot command not installed"
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[ ! -d $ACME_DIR ] && error "$ACME_DIR is not a directory"
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[ ! -d $CSR_DIR ] && error "$CSR_DIR is not a directory"
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[ ! -d $LOG_DIR ] && error "$LOG_DIR is not a directory"
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[ "$#" -ge 3 ] || [ "$#" -le 0 ] && error "invalid argument(s)"
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[ "$#" -eq 2 ] && [ "$1" != "--cron" ] && error "invalid argument(s)"
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[ "$#" -eq 1 ] && vhost=$(basename "$1" .conf) && CRON=NO
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[ "$#" -eq 2 ] && vhost=$(basename "$2" .conf) && CRON=YES
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# verify .csr file
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[ ! -f "$CSR_DIR/${vhost}.csr" ] && error "$CSR_DIR/${vhost}.csr absent"
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[ ! -r "$CSR_DIR/${vhost}.csr" ] && error "$C´SR_DIR/${vhost}.csr is not readable"
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openssl req -noout -modulus -in "$CSR_DIR/${vhost}.csr" >/dev/null || error "$CSR_DIR/${vhost}.csr is invalid"
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debug "Using CSR file: $CSR_DIR/${vhost}.csr"
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# Hook for evoadmin-web in cluster mode : check master status
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if [ -f "/home/${vhost}/state" ]; then
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grep -q "STATE=master" "/home/${vhost}/state" || exit 0
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fi
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if [ -n "$SSL_EMAIL" ]; then
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emailopt="-m $SSL_EMAIL"
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else
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emailopt="--register-unsafely-without-email"
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fi
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DATE=$(date "+%Y%m%d")
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[ ! -n "$DATE" ] && error "invalid date"
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# If live link already exists, it's not our first time...
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if [ -h "$CRT_DIR/${vhost}/live" ]; then
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openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/live/cert.crt" >/dev/null || error "$CRT_DIR/${vhost}/live/cert.crt is invalid"
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# Verify if our certificate will expire
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crt_end_date=$(openssl x509 -noout -enddate -in "$CRT_DIR/${vhost}/live/cert.crt" | cut -d= -f2)
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date_renew=$(date -ud "$crt_end_date - $SSL_MINDAY days" +"%s")
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date_today=$(date +'%s')
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[ "$date_today" -lt "$date_renew" ] && debug "Cert $CRT_DIR/${vhost}/live/cert.crt expires at $crt_end_date => more than $SSL_MINDAY days: thxbye." && exit 0
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else
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which apache2ctl >/dev/null && mkconf_apache
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which nginx >/dev/null && mkconf_nginx
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fi
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# renew certificate with certbot
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[ -d "$CRT_DIR/${vhost}/${DATE}" ] && error "$CRT_DIR/${vhost}/${DATE} directory already exists, remove it manually."
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mkdir -pm 755 "$CRT_DIR/${vhost}/${DATE}"
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chown -R acme: "$CRT_DIR/${vhost}/${DATE}"
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[ "$CRON" = "YES" ] && CERTBOT_OPTS="--quiet"
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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 "$LOG_DIR" 2>&1 | grep -v "certbot.crypto_util"
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# verify if all is right
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openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/${DATE}/cert.crt" >/dev/null || error "new $CRT_DIR/${vhost}/${DATE}/cert.crt is invalid"
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openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/${DATE}/fullchain.pem" >/dev/null || error "new $CRT_DIR/${vhost}/${DATE}/fullchain.pem is invalid"
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openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/${DATE}/chain.pem" >/dev/null || error "new $CRT_DIR/${vhost}/${DATE}/chain.pem is invalid"
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# link dance
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[ -h "$CRT_DIR/${vhost}/live" ] && rm "$CRT_DIR/${vhost}/live"
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ln -s "$CRT_DIR/${vhost}/${DATE}" "$CRT_DIR/${vhost}/live"
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openssl x509 -noout -modulus -in "$CRT_DIR/${vhost}/live/cert.crt" >/dev/null || error "new $CRT_DIR/{vhost}/live/cert.crt is invalid"
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# reload apache or nginx (TODO: need improvments)
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pidof apache2 >/dev/null && apache2ctl -t 2>/dev/null && debug "Apache detected... reloading" && systemctl reload apache2
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pidof nginx >/dev/null && nginx -t 2>/dev/null && debug "Nginx detected... reloading" && systemctl reload apache2
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}
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main "$@"
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