#!/usr/bin/bash

if [ $(/usr/bin/id -u) != 0 ]; then echo "only root can do that"; exit 2; fi

#***************************************************************************
# This file is part of the CRYPTO BONE
# File     : getIP 
# Version  : 1.1.0 (ALL-IN-ONE)
# License  : BSD
# Date     : Tuesday, 1 November 2016
# Contact  : Please send enquiries and bug-reports to innovation@senderek.ie
#
#
# Copyright (c) 2015-2017
#	Ralf Senderek, Ireland.  All rights reserved. (https://senderek.ie)
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#	   This product includes software developed by Ralf Senderek.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND  ANY EXPRESS OR 
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  IMPLIED WARRANTIES 
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
# POSSIBILITY OF SUCH DAMAGE.
#
#****************************************************************************

export SSH_AUTH_SOCK=/usr/lib/cryptobone/ssh.sock

if [  -f /usr/lib/cryptobone/cbb.config ]
then
     . /usr/lib/cryptobone/cbb.config 2> /dev/null
fi     

function scan
{
     echo scanning $1 1>&2 
     RES=$(ping -c1 -w1 $1)
     if [ $? = 0 ]
     then
          echo FOUND $1
          TEST=$(echo STATUS | ssh -l cryptobone -o "PasswordAuthentication=no" $1 /cbb/cbcontrol)
          if [ ${TEST%%:*}x != "x" ] &&  [ ${TEST%%:*} = "failed" ]
          then
               return ${1%%.*}
          fi
     else
          echo "ping seems not to work. Please check your firewall settings."
     fi

     return 0
}


if [ ${BONEIP}x != "x" ]
then
     if ping -c1 -w1 ${BONEIP} 2> /dev/null > /dev/null
     then
         exit 0
     else
         exit 2
     fi	
else
     echo "Searching ..."
     for HOST in $(arp -n | cut -c-20 | grep -v dres)
     do
          scan $HOST    
          RET=$?
	  if [ ${RET} != 0 ]
          then
               echo "BONEIP=$HOST" > /usr/lib/cryptobone/cbb.config
               exit 0
          fi
	  if [ -x /usr/bin/nmap ]
	  then
              NETWORK=${HOST%.*}
	      for IP in $(nmap -sP -n $NETWORK.0/24 | grep "report for" | cut -f5 -d' ' )
	      do
                   ping -c1 -w1 $IP 2>/dev/null > /dev/null
	      done
	  else
	      echo "You may consider to install nmap to facilitate a network scan."
	  fi
     done 
     echo "No Crypto Bone found."
     exit 1
fi

#-----------------------------------------------------------#