#!/bin/sh
#
# Example init.d script with LSB support.
#
# Please read this init.d carefully and modify the sections to
# adjust it to the program you want to run.
#
# Copyright (c) 2007 Javier Fernandez-Sanguino <jfs@debian.org>
#
# This is free software; you may redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2,
# or (at your option) any later version.
#
# This is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License with
# the Debian operating system, in /usr/share/common-licenses/GPL;  if
# not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
#
### BEGIN INIT INFO
# Provides:          qos
# Required-Start:    $network $local_fs
# Required-Stop:
# Should-Start:      $named
# Should-Stop:
# Default-Start:     
# Default-Stop:      0 1 6
# Short-Description: <Enter a short description of the sortware>
# Description:       <Enter a long description of the software>
#                    <...>
#                    <...>
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

DAEMON=userapd 		   # Introduce the server's location here
NAME=qos                   # Introduce the short server's name here
DESC="Quality of Service system"    # Introduce a short description here
LOGDIR=/var/log/qos  # Log directory to use

PIDFILE=/var/run/userapd

. /lib/lsb/init-functions

# Default options, these can be overriden by the information
# at /etc/default/$NAME
DAEMON_OPTS=""          # Additional options given to the server

DIETIME=10              # Time to wait for the server to die, in seconds
                        # If this value is set too low you might not
                        # let some servers to die gracefully and
                        # 'restart' will not work

#STARTTIME=2             # Time to wait for the server to start, in seconds
                        # If this value is set each time the server is
                        # started (on start or restart) the script will
                        # stall to try to determine if it is running
                        # If it is not set and the server takes time
                        # to setup a pid file the log message might 
                        # be a false positive (says it did not start
                        # when it actually did)
                        
LOGFILE=$LOGDIR/$NAME.log  # Server logfile

# Include defaults if available
if [ -f /etc/default/$NAME ] ; then
	. /etc/default/$NAME
fi

set -e

running() {
    if tc qdisc | grep sfq >/dev/null 2> /dev/null ; then
	return 0
    fi
    if [ -r $PIDFILE ] ; then
	pid=`cat $PIDFILE`
	runpid=`pidof -x userapd`
	[ "$pid" == "$runpid" ]
    else
	return 1
    fi
}

start_server() {
	/usr/local/sbin/setup-qos start
	errcode=$?
	return $errcode
}

stop_server() {
	/usr/local/sbin/setup-qos stop
	killall userapd
	errcode=$?
	return $errcode
}

reload_server() {
    [ ! -f "$PIDFILE" ] && return 1
    pid=pidofproc $PIDFILE # This is the daemon's pid
    # Send a SIGHUP
    kill -1 $pid
    return $?
}

force_stop() {
	if running ; then
		killall -15 userapd
	# Is it really dead?
		sleep "$DIETIME"s
		if running ; then
			killall -9 userapd
			sleep "$DIETIME"s
			if ! pgrep $userapd ; then
				echo "Cannot kill $NAME (pid=$pid)!"
				exit 1
			fi
		fi
	fi
	rm -f $PIDFILE
}


case "$1" in
  start)
	if [ -z "`ls /etc/qos/qos-* 2> /dev/null`" ] ; then
	    exit 0
	fi
	log_daemon_msg "Starting $DESC " "$NAME"
        # Check if it's running first
        if start_server ; then
            # NOTE: Some servers might die some time after they start,
            # this code will detect this issue if STARTTIME is set
            # to a reasonable value
            [ -n "$STARTTIME" ] && sleep $STARTTIME # Wait some time 
            if  running ;  then
                # It's ok, the server started and is running
                log_end_msg 0
            else
                # It is not running after we did start
                log_end_msg 1
            fi
        else
            # Either we could not start it
            log_end_msg 1
        fi
	;;
  stop)
        log_daemon_msg "Stopping $DESC" "$NAME"
        stop_server || errcode=$?
        log_end_msg $errcode
        ;;
  force-stop)
        # First try to stop gracefully the program
        $0 stop
        if running; then
            # If it's still running try to kill it more forcefully
            log_daemon_msg "Stopping (force) $DESC" "$NAME"
			errcode=0
            force_stop || errcode=$?
            log_end_msg $errcode
        fi
	;;
  restart|force-reload)
        log_daemon_msg "Restarting $DESC" "$NAME"
		errcode=0
        stop_server || errcode=$?
        # Wait some sensible amount, some server need this
        [ -n "$DIETIME" ] && sleep $DIETIME
        start_server || errcode=$?
        [ -n "$STARTTIME" ] && sleep $STARTTIME
        running || errcode=$?
        log_end_msg $errcode
	;;
  status)

        log_daemon_msg "Checking status of $DESC" "$NAME"
        if running ;  then
            log_progress_msg "running"
            log_end_msg 0
        else
            log_progress_msg "apparently not running"
            log_end_msg 1
            exit 1
        fi
        ;;
  # Use this if the daemon cannot reload
  reload)
        log_warning_msg "Reloading $NAME daemon: not implemented, as the daemon"
        log_warning_msg "cannot re-read the config file (use restart)."
        ;;
  *)
	N=/etc/init.d/$NAME
	echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2
	exit 1
	;;
esac

exit 0