#! /bin/bash

### BEGIN INIT INFO
# Provides:		telnetd
# Required-Start:	$remote_fs $syslog
# Required-Stop:	$remote_fs $syslog
# Default-Start:
# Default-Stop:
# Short-Description:	Busybox telnet daemon
### END INIT INFO

declare progname=${0##*/}
declare action=$1; shift

port=$1; shift
addr=$1; shift

: ${port:=23}
: ${bb:=/bin/busybox}

test -x $bb  || exit 0

running_pid ()
{
    pidof $bb | while read pid ; do
	f=$(tr '\000' '\t' < /proc/$pid/cmdline 2>/dev/null | cut -f2)
	if [ "$f" == telnetd ] ; then
	    echo $pid
	    return
	fi
    done
    false
}

start_telnetd ()
{
    if [ -n "$addr" ]
    then $bb telnetd -p $port -b $addr
    else $bb telnetd -p $port
    fi
}


start ()
{
    local -i pid=$( running_pid )

    [ $pid -ne 0 ] && return
    start_telnetd
}

stop ()
{
    local -i pid=$( running_pid )
    if [ $pid -ne 0 ]
    then kill $pid
    else return 0
    fi
}

restart()
{
    local -i pid=$( running_pid )
    if [ $pid -ne 0 ] 
    then kill $pid
	 sleep 1
    fi
    start_telnetd
}

status ()
{
    local -i pid=$( running_pid )
    if [ $pid -ne 0 ]
    then echo running
	 return
    else
	 echo not running
         false
    fi
}

case "$action" in
  start)	start;;
  stop)		stop;;
  restart)	restart;;
  status)	status;;
  *)	echo "Usage: $progname {start|stop|restart|status}"
	exit 1
esac