| #!/bin/sh |
| # Wrapper for acme.sh to work on openwrt. |
| # |
| # This program is free software; you can redistribute it and/or modify it under |
| # the terms of the GNU General Public License as published by the Free Software |
| # Foundation; either version 3 of the License, or (at your option) any later |
| # version. |
| # |
| # Author: Toke Høiland-Jørgensen <toke@toke.dk> |
| |
| CHECK_CRON=$1 |
| ACME=/usr/lib/acme/acme.sh |
| export CURL_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt |
| export NO_TIMESTAMP=1 |
| |
| UHTTPD_LISTEN_HTTP= |
| STATE_DIR='/etc/acme' |
| ACCOUNT_EMAIL= |
| DEBUG=0 |
| NGINX_WEBSERVER=0 |
| UPDATE_NGINX=0 |
| UPDATE_UHTTPD=0 |
| USER_CLEANUP= |
| |
| . /lib/functions.sh |
| |
| check_cron() |
| { |
| [ -f "/etc/crontabs/root" ] && grep -q '/etc/init.d/acme' /etc/crontabs/root && return |
| echo "0 0 * * * /etc/init.d/acme start" >> /etc/crontabs/root |
| /etc/init.d/cron start |
| } |
| |
| log() |
| { |
| logger -t acme -s -p daemon.info -- "$@" |
| } |
| |
| err() |
| { |
| logger -t acme -s -p daemon.err -- "$@" |
| } |
| |
| debug() |
| { |
| [ "$DEBUG" -eq "1" ] && logger -t acme -s -p daemon.debug -- "$@" |
| } |
| |
| get_listeners() { |
| local proto rq sq listen remote state program |
| netstat -nptl 2>/dev/null | while read proto rq sq listen remote state program; do |
| case "$proto#$listen#$program" in |
| tcp#*:80#[0-9]*/*) echo -n "${program%% *} " ;; |
| esac |
| done |
| } |
| |
| run_acme() |
| { |
| debug "Running acme.sh as '$ACME $@'" |
| $ACME "$@" |
| } |
| |
| pre_checks() |
| { |
| main_domain="$1" |
| |
| log "Running pre checks for $main_domain." |
| |
| listeners="$(get_listeners)" |
| |
| debug "port80 listens: $listeners" |
| |
| for listener in $(get_listeners); do |
| pid="${listener%/*}" |
| cmd="${listener#*/}" |
| |
| case "$cmd" in |
| uhttpd) |
| if [ -n "$UHTTPD_LISTEN_HTTP" ]; then |
| debug "Already handled uhttpd; skipping" |
| continue |
| fi |
| |
| debug "Found uhttpd listening on port 80; trying to disable." |
| |
| UHTTPD_LISTEN_HTTP=$(uci get uhttpd.main.listen_http) |
| |
| if [ -z "$UHTTPD_LISTEN_HTTP" ]; then |
| err "$main_domain: Unable to find uhttpd listen config." |
| err "Manually disable uhttpd or set webroot to continue." |
| return 1 |
| fi |
| |
| uci set uhttpd.main.listen_http='' |
| uci commit uhttpd || return 1 |
| if ! /etc/init.d/uhttpd reload ; then |
| uci set uhttpd.main.listen_http="$UHTTPD_LISTEN_HTTP" |
| uci commit uhttpd |
| return 1 |
| fi |
| ;; |
| nginx*) |
| if [ "$NGINX_WEBSERVER" -eq "1" ]; then |
| debug "Already handled nginx; skipping" |
| continue |
| fi |
| |
| debug "Found nginx listening on port 80; trying to disable." |
| NGINX_WEBSERVER=1 |
| local tries=0 |
| while grep -sq "$cmd" "/proc/$pid/cmdline" && kill -0 "$pid"; do |
| /etc/init.d/nginx stop |
| if [ $tries -gt 10 ]; then |
| debug "Can't stop nginx. Terminating script." |
| return 1 |
| fi |
| debug "Waiting for nginx to stop..." |
| tries=$((tries + 1)) |
| sleep 1 |
| done |
| ;; |
| "") |
| debug "Nothing listening on port 80." |
| ;; |
| *) |
| err "$main_domain: Cannot run in standalone mode; another daemon is listening on port 80." |
| err "Disable other daemon or set webroot to continue." |
| return 1 |
| ;; |
| esac |
| done |
| |
| iptables -I input_rule -p tcp --dport 80 -j ACCEPT -m comment --comment "ACME" || return 1 |
| ip6tables -I input_rule -p tcp --dport 80 -j ACCEPT -m comment --comment "ACME" || return 1 |
| debug "v4 input_rule: $(iptables -nvL input_rule)" |
| debug "v6 input_rule: $(ip6tables -nvL input_rule)" |
| return 0 |
| } |
| |
| post_checks() |
| { |
| log "Running post checks (cleanup)." |
| # The comment ensures we only touch our own rules. If no rules exist, that |
| # is fine, so hide any errors |
| iptables -D input_rule -p tcp --dport 80 -j ACCEPT -m comment --comment "ACME" 2>/dev/null |
| ip6tables -D input_rule -p tcp --dport 80 -j ACCEPT -m comment --comment "ACME" 2>/dev/null |
| |
| if [ -e /etc/init.d/uhttpd ] && ( [ -n "$UHTTPD_LISTEN_HTTP" ] || [ "$UPDATE_UHTTPD" -eq 1 ] ); then |
| if [ -n "$UHTTPD_LISTEN_HTTP" ]; then |
| uci set uhttpd.main.listen_http="$UHTTPD_LISTEN_HTTP" |
| UHTTPD_LISTEN_HTTP= |
| fi |
| uci commit uhttpd |
| /etc/init.d/uhttpd restart |
| fi |
| |
| if [ -e /etc/init.d/nginx ] && ( [ "$NGINX_WEBSERVER" -eq 1 ] || [ "$UPDATE_NGINX" -eq 1 ] ); then |
| NGINX_WEBSERVER=0 |
| /etc/init.d/nginx restart |
| fi |
| |
| if [ -n "$USER_CLEANUP" ] && [ -f "$USER_CLEANUP" ]; then |
| log "Running user-provided cleanup script from $USER_CLEANUP." |
| "$USER_CLEANUP" || return 1 |
| fi |
| } |
| |
| err_out() |
| { |
| post_checks |
| exit 1 |
| } |
| |
| int_out() |
| { |
| post_checks |
| trap - INT |
| kill -INT $$ |
| } |
| |
| is_staging() |
| { |
| local main_domain |
| local domain_dir |
| main_domain="$1" |
| domain_dir="$2" |
| |
| grep -q "acme-staging" "${domain_dir}/${main_domain}.conf" |
| return $? |
| } |
| |
| issue_cert() |
| { |
| local section="$1" |
| local acme_args= |
| local enabled |
| local use_staging |
| local update_uhttpd |
| local update_nginx |
| local keylength |
| local keylength_ecc=0 |
| local domains |
| local main_domain |
| local moved_staging=0 |
| local failed_dir |
| local webroot |
| local dns |
| local user_setup |
| local user_cleanup |
| local ret |
| local domain_dir |
| local acme_server |
| local days |
| |
| config_get_bool enabled "$section" enabled 0 |
| config_get_bool use_staging "$section" use_staging |
| config_get_bool update_uhttpd "$section" update_uhttpd |
| config_get_bool update_nginx "$section" update_nginx |
| config_get calias "$section" calias |
| config_get dalias "$section" dalias |
| config_get domains "$section" domains |
| config_get keylength "$section" keylength |
| config_get webroot "$section" webroot |
| config_get dns "$section" dns |
| config_get user_setup "$section" user_setup |
| config_get user_cleanup "$section" user_cleanup |
| config_get acme_server "$section" acme_server |
| config_get days "$section" days |
| |
| UPDATE_NGINX=$update_nginx |
| UPDATE_UHTTPD=$update_uhttpd |
| USER_CLEANUP=$user_cleanup |
| |
| [ "$enabled" -eq "1" ] || return |
| |
| [ "$DEBUG" -eq "1" ] && acme_args="$acme_args --debug" |
| |
| set -- $domains |
| main_domain=$1 |
| |
| if [ -n "$user_setup" ] && [ -f "$user_setup" ]; then |
| log "Running user-provided setup script from $user_setup." |
| "$user_setup" "$main_domain" || return 1 |
| else |
| [ -n "$webroot" ] || [ -n "$dns" ] || pre_checks "$main_domain" || return 1 |
| fi |
| |
| if echo $keylength | grep -q "^ec-"; then |
| domain_dir="$STATE_DIR/${main_domain}_ecc" |
| keylength_ecc=1 |
| else |
| domain_dir="$STATE_DIR/${main_domain}" |
| fi |
| |
| log "Running ACME for $main_domain" |
| |
| handle_credentials() { |
| local credential="$1" |
| eval export $credential |
| } |
| config_list_foreach "$section" credentials handle_credentials |
| |
| if [ -e "$domain_dir" ]; then |
| if [ "$use_staging" -eq "0" ] && is_staging "$main_domain" "$domain_dir"; then |
| log "Found previous cert issued using staging server. Moving it out of the way." |
| mv "$domain_dir" "${domain_dir}.staging" |
| moved_staging=1 |
| else |
| log "Found previous cert config. Issuing renew." |
| [ "$keylength_ecc" -eq "1" ] && acme_args="$acme_args --ecc" |
| run_acme --home "$STATE_DIR" --renew -d "$main_domain" $acme_args && ret=0 || ret=1 |
| post_checks |
| return $ret |
| fi |
| fi |
| |
| |
| acme_args="$acme_args $(for d in $domains; do echo -n "-d $d "; done)" |
| acme_args="$acme_args --keylength $keylength" |
| [ -n "$ACCOUNT_EMAIL" ] && acme_args="$acme_args --accountemail $ACCOUNT_EMAIL" |
| |
| if [ -n "$acme_server" ]; then |
| log "Using custom ACME server URL" |
| acme_args="$acme_args --server $acme_server" |
| else |
| # default to letsencrypt because the upstream default may change |
| if [ "$use_staging" -eq "1" ]; then |
| acme_args="$acme_args --server letsencrypt_test" |
| else |
| acme_args="$acme_args --server letsencrypt" |
| fi |
| fi |
| |
| if [ -n "$days" ]; then |
| log "Renewing after $days days" |
| acme_args="$acme_args --days $days" |
| fi |
| |
| if [ -n "$dns" ]; then |
| log "Using dns mode" |
| acme_args="$acme_args --dns $dns" |
| if [ -n "$dalias" ]; then |
| log "Using domain alias for dns mode" |
| acme_args="$acme_args --domain-alias $dalias" |
| if [ -n "$calias" ]; then |
| err "Both domain and challenge aliases are defined. Ignoring the challenge alias." |
| fi |
| elif [ -n "$calias" ]; then |
| log "Using challenge alias for dns mode" |
| acme_args="$acme_args --challenge-alias $calias" |
| fi |
| elif [ -z "$webroot" ]; then |
| log "Using standalone mode" |
| acme_args="$acme_args --standalone --listen-v6" |
| else |
| if [ ! -d "$webroot" ]; then |
| err "$main_domain: Webroot dir '$webroot' does not exist!" |
| post_checks |
| return 1 |
| fi |
| log "Using webroot dir: $webroot" |
| acme_args="$acme_args --webroot $webroot" |
| fi |
| |
| if ! run_acme --home "$STATE_DIR" --issue $acme_args; then |
| failed_dir="${domain_dir}.failed-$(date +%s)" |
| err "Issuing cert for $main_domain failed. Moving state to $failed_dir" |
| [ -d "$domain_dir" ] && mv "$domain_dir" "$failed_dir" |
| if [ "$moved_staging" -eq "1" ]; then |
| err "Restoring staging certificate" |
| mv "${domain_dir}.staging" "${domain_dir}" |
| fi |
| post_checks |
| return 1 |
| fi |
| |
| if [ -e /etc/init.d/uhttpd ] && [ "$update_uhttpd" -eq "1" ]; then |
| uci set uhttpd.main.key="${domain_dir}/${main_domain}.key" |
| uci set uhttpd.main.cert="${domain_dir}/fullchain.cer" |
| # commit and reload is in post_checks |
| fi |
| |
| local nginx_updated |
| nginx_updated=0 |
| if command -v nginx-util 2>/dev/null && [ "$update_nginx" -eq "1" ]; then |
| nginx_updated=1 |
| for domain in $domains; do |
| nginx-util add_ssl "${domain}" acme "${domain_dir}/fullchain.cer" \ |
| "${domain_dir}/${main_domain}.key" || nginx_updated=0 |
| done |
| # reload is in post_checks |
| fi |
| |
| if [ "$nginx_updated" -eq "0" ] && [ -w /etc/nginx/nginx.conf ] && [ "$update_nginx" -eq "1" ]; then |
| sed -i "s#ssl_certificate\ .*#ssl_certificate ${domain_dir}/fullchain.cer;#g" /etc/nginx/nginx.conf |
| sed -i "s#ssl_certificate_key\ .*#ssl_certificate_key ${domain_dir}/${main_domain}.key;#g" /etc/nginx/nginx.conf |
| # commit and reload is in post_checks |
| fi |
| |
| post_checks |
| } |
| |
| load_vars() |
| { |
| local section="$1" |
| |
| STATE_DIR=$(config_get "$section" state_dir) |
| ACCOUNT_EMAIL=$(config_get "$section" account_email) |
| DEBUG=$(config_get "$section" debug) |
| } |
| |
| check_cron |
| [ -n "$CHECK_CRON" ] && exit 0 |
| [ -e "/var/run/acme_boot" ] && rm -f "/var/run/acme_boot" && exit 0 |
| |
| config_load acme |
| config_foreach load_vars acme |
| |
| if [ -z "$STATE_DIR" ] || [ -z "$ACCOUNT_EMAIL" ]; then |
| err "state_dir and account_email must be set" |
| exit 1 |
| fi |
| |
| [ -d "$STATE_DIR" ] || mkdir -p "$STATE_DIR" |
| |
| trap err_out HUP TERM |
| trap int_out INT |
| |
| config_foreach issue_cert cert |
| |
| exit 0 |