initd

#! /bin/sh

# Copyright (C) 2011- by Mar2zz <LaSi.Mar2zz@gmail.com>
# released under GPL, version 2 or later


################################################
#                                              #
#  TO CONFIGURE EDIT /etc/default/maraschino
#                                              #
################################################

### BEGIN INIT INFO
# Provides:          Maraschino application instance
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts instance of Maraschino
# Description:       starts instance of Maraschino using start-stop-daemon
### END INIT INFO


# main variables
DAEMON=/usr/bin/python
SETTINGS=/etc/default/maraschino

SETTINGS_LOADED=FALSE

DESC=Maraschino

# only accept values from /etc/default/maraschino
unset RUN_AS CONFIG DATADIR PID_FILE

. /lib/lsb/init-functions

[ -x $DAEMON ] || {
    log_warning_msg "$DESC: Can't execute daemon, aborting. See $DAEMON";
    return 1; }

[ -r $SETTINGS ] || {
    log_warning_msg "$DESC: Can't read settings, aborting. See $SETTINGS";
    return 1; }

check_retval() {
    if [ $? -eq 0 ]; then
        log_end_msg 0
        return 0
    else
        log_end_msg 1
        exit 1
    fi
}

load_settings() {
    if [ $SETTINGS_LOADED != "TRUE" ]; then
        . $SETTINGS

        [ -n "$APP_PATH" ] || {
            log_warning_msg "$DESC: path to $DESC not set, aborting. See $SETTINGS";
            return 1; }

        [ -n "$PORT" ] || {
            log_warning_msg "$DESC: port not set, aborting. See $SETTINGS";
            return 1; }

        [ $ENABLE_DAEMON != 1 ] && {
            log_warning_msg "$DESC: daemon not enabled, aborting. See $SETTINGS";
            return 1; }

        [ -z "$RUN_AS" ] && {
            log_warning_msg "$DESC: daemon username not set, aborting. See $SETTINGS";
            return 1; }

        [ -z "${RUN_AS%:*}" ] && exit 1

        DAEMON_OPTS="Maraschino.py --port=$PORT"

        [ -n "$HOST" ] && DAEMON_OPTS="$DAEMON_OPTS --host=$HOST"

        [ -n "$WEBROOT" ] && DAEMON_OPTS="$DAEMON_OPTS --webroot=$WEBROOT"

        [ $KIOSK -eq 1 ] && DAEMON_OPTS="$DAEMON_OPTS --kiosk"

        [ -n "$PID_FILE" ] && PID_FILE=$PID_FILE
        [ -n "$PID_FILE" ] || PID_FILE=/var/run/maraschino/maraschino.pid

        SETTINGS_LOADED=TRUE
    fi
    return 0
}

load_settings || exit 0

is_running () {
    # returns 1 when running, else 0.
    PID=$(pgrep -f "Maraschino.py --port=$PORT")
    RET=$?
    [ $RET -gt 1 ] && exit 1 || return $RET
}

handle_pid () {
    PID_PATH=`dirname $PID_FILE`
    [ -d $PID_PATH ] || mkdir -p $PID_PATH && chown -R $RUN_AS $PID_PATH > /dev/null || {
        log_warning_msg "$DESC: Could not create $PID_FILE, aborting.";
        return 1;}
}

enable_updates () {
    chown -R $RUN_AS $APP_PATH > /dev/null || {
        log_warning_msg "$DESC: $APP_PATH not writable for web-updates, See $SETTINGS";
        return 0; }
}

start_maraschino () {
    if ! is_running; then
        log_daemon_msg "Starting $DESC"
        [ "$WEB_UPDATE" = 1 ] && enable_updates
        handle_pid
        start-stop-daemon -o -d $APP_PATH -c $RUN_AS --start --background --pidfile $PID_FILE  --make-pidfile --exec $DAEMON -- $DAEMON_OPTS
        check_retval
    else
        log_success_msg "$DESC: already running (pid $PID)"
    fi
}

stop_maraschino () {
    if is_running; then
        log_daemon_msg "Stopping $DESC"
        start-stop-daemon -o --stop --pidfile $PID_FILE --retry 15
        check_retval
    else
        log_success_msg "$DESC: not running"
    fi
}


case "$1" in
    start)
        start_maraschino
        ;;
    stop)
        stop_maraschino
        ;;
    restart|force-reload)
        stop_maraschino
        start_maraschino
        ;;
    *)
        N=/etc/init.d/$NAME
        echo "Usage: $N {start|stop|restart|force-reload}" >&2
        exit 1
        ;;
esac

exit 0