#!/bin/sh
  
  usage() {
  	(

  	echo "Usage: $0 <board-IP> [board-port [board-in-port]]"

  	echo ""
  	echo "If port is not specified, '6666' will be used"
  	[ -z "$*" ] && exit 0
  	echo ""
  	echo "ERROR: $*"
  	exit 1
  	) 1>&2
  	exit $?
  }
  
  while [ -n "$1" ] ; do
  	case $1 in
  		-h|--help) usage;;
  		--)        break;;
  		-*)        usage "Invalid option $1";;
  		*)         break;;
  	esac
  	shift
  done
  
  ip=$1

  board_out_port=${2:-6666}
  board_in_port=${3:-${board_out_port}}

  echo Board out port: ${board_out_port}
  echo Board in port: ${board_in_port}
  
  if [ -z "${ip}" ] || [ -n "$4" ] ; then

  	usage "Invalid number of arguments"
  fi
  
  for nc in netcat nc ; do

  	type ${nc} >/dev/null 2>&1 && break

  done
  
  trap "stty icanon echo intr ^C" 0 2 3 5 10 13 15
  echo "NOTE: the interrupt signal (normally ^C) has been remapped to ^T"
  
  stty -icanon -echo intr ^T

  (

  if type ncb 2>/dev/null ; then
  	# see if ncb is in $PATH

  	exec ncb ${board_out_port}

  
  elif [ -x ${0%/*}/ncb ] ; then
  	# maybe it's in the same dir as the netconsole script

  	exec ${0%/*}/ncb ${board_out_port}

  
  else
  	# blah, just use regular netcat

  	while ${nc} -u -l -p ${board_out_port} < /dev/null ; do

  		:
  	done
  fi

  ) &
  pid=$!

  ${nc} -u ${ip} ${board_in_port}

  kill ${pid} 2>/dev/null