#! /bin/sh
# a aby sa to volalo zmaz pripadne /lib/systemd/system/knockd.service
# !!!! pozor .. po uprave daj systemctl daemon-reload .. lebo systemd si to kdesi inde skopiruje a toto uz nevola !

### BEGIN INIT INFO
# Provides:          knockd
# Required-Start:    $network $syslog $remote_fs
# Required-Stop:     $network $syslog $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: port-knock daemon
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/knockd
NAME=knockd
PIDFILE=/var/run/$NAME.pid
DEFAULTS_FILE=/etc/default/knockd
DESC="Port-knock daemon"
OPTIONS=" -d"

umask 0037

test -f $DAEMON || exit 0

set -e

[ -f $DEFAULTS_FILE ] && . $DEFAULTS_FILE

. /lib/lsb/init-functions

[ "$KNOCKD_OPTS" ] && OPTIONS="$OPTIONS $KNOCKD_OPTS"

start_if_configured() {
    if [ $START_KNOCKD -ne 1 ]; then
        log_warning_msg "$NAME disabled: not starting. To enable it edit $DEFAULTS_FILE"
        exit 0
    else
        log_daemon_msg "Starting $DESC" "$NAME"
        if ! START_ERROR=`start-stop-daemon --start --oknodo --quiet --exec $DAEMON -- $OPTIONS 2>&1`; then
            # don't fail the upgrade if it fails to start
            echo -n " "
            log_action_end_msg 1 "$START_ERROR"
            exit 0
        else
            log_end_msg 0
        fi
    fi
}

case "$1" in
    start)
	/etc/knockd/inicial
        start_if_configured
        ;;
    stop)
	iptables -F knock 2>/dev/null
        log_daemon_msg "Stopping $DESC" "$NAME"
        start-stop-daemon --stop --oknodo --quiet --exec $DAEMON
        log_end_msg 0
        ;;
    restart|reload|force-reload)
        iptables -F knock 2>/dev/null
        /etc/knockd/inicial
        log_daemon_msg "Stopping $DESC" "$NAME"
        start-stop-daemon --stop --oknodo --quiet --exec $DAEMON
        log_end_msg 0
        sleep 1
        start_if_configured
        ;;
    *)
        log_warning_msg "Usage: $0 {start|stop|restart|reload|force-reload}" >&2
        exit 1
        ;;
esac

exit 0