ibeacon_scan

#!/bin/bash
# iBeacon Scan by Radius Networks

if [[ $1 == "parse" ]]; then
	packet=""
	capturing=""
	count=0
	while read line
	do
		count=$[count + 1]
		if [ "$capturing" ]; then
			if [[ $line =~ ^[0-9a-fA-F]{2}\ [0-9a-fA-F] ]]; then
				packet="$packet $line"
			else
				if [[ $packet =~ ^04\ 3E\ 2A\ 02\ 01\ .{26}\ 02\ 01\ .{14}\ 02\ 15 ]]; then
					#echo $packet
					UUID=`echo $packet | sed 's/^.\{69\}\(.\{47\}\).*$/\1/'`
					MAJOR=`echo $packet | sed 's/^.\{117\}\(.\{5\}\).*$/\1/'`
					MINOR=`echo $packet | sed 's/^.\{123\}\(.\{5\}\).*$/\1/'`
					POWER=`echo $packet | sed 's/^.\{129\}\(.\{2\}\).*$/\1/'`
					MAC=`echo $packet | sed 's/^.\{21\}\(.\{17\}\).*$/\1/'`
					UUID=`echo $UUID | sed -e 's/\ //g' -e 's/^\(.\{8\}\)\(.\{4\}\)\(.\{4\}\)\(.\{4\}\)\(.\{12\}\)$/\1-\2-\3-\4-\5/'`
					MAJOR=`echo $MAJOR | sed 's/\ //g'`
					MAJOR=`echo "ibase=16; $MAJOR" | bc`
					MINOR=`echo $MINOR | sed 's/\ //g'`
					MINOR=`echo "ibase=16; $MINOR" | bc`
					POWER=`echo "ibase=16; $POWER" | bc`
					POWER=$[POWER - 256]
					RSSI=`echo $packet | sed 's/^.\{132\}\(.\{2\}\).*$/\1/'`
					RSSI=`echo "ibase=16; $RSSI" | bc`
					RSSI=$[RSSI - 256]
					MAC=`echo $MAC | sed 's/^\(.*\) \(.*\) \(.*\) \(.*\) \(.*\) \(.*\)/\6 \5 \4 \3 \2 \1/g'`

					echo "$UUID, $MAJOR, $MINOR, $POWER, $RSSI, $MAC" | nc -U /tmp/ibeacon.sock

					#if [[ $2 == "-b" ]]; then
					#		 echo "$UUID, $MAJOR, $MINOR, $POWER, $RSSI, $MAC"
					#else
					#		 echo "UUID: $UUID MAJOR: $MAJOR MINOR: $MINOR POWER: $POWER RSSI: $RSSI MAC: $MAC"
					#fi
				fi
				capturing=""
				packet=""
			fi
		fi

		if [ ! "$capturing" ]; then
			if [[ $line =~ ^\> ]]; then
				packet=`echo $line | sed 's/^>.\(.*$\)/\1/'`
				capturing=1
			fi
		fi
	done
else
	sudo hcitool lescan --duplicates 1>/dev/null &
	if [ "$(pidof hcitool)" ]; then
		sudo hcidump --raw | ./$0 parse $1
	fi
fi