data

#!/bin/bash

# ----------------------------------------------------------------------------------------
# GENERAL INFORMATION
# ----------------------------------------------------------------------------------------
#
# Written by Andrew J Freyer
# GNU General Public License
# http://github.com/andrewjfreyer/monitor
#
# PACKET INFORMATION GATHERING
#
# ----------------------------------------------------------------------------------------

# ----------------------------------------------------------------------------------------
# OBTAIN MANUFACTURER INFORMATION FOR A PARTICULAR BLUETOOTH MAC ADDRESS
# ----------------------------------------------------------------------------------------
determine_manufacturer () {

	#IF NO ADDRESS, RETURN BLANK
	if [ -n "$1" ]; then  
		local address="$1"

		#VERIFY THIS IS A MAC ADDRESS
		[[ $address =~ ([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2} ]] && manufacturer="Unknown"

		#SET THE FILE IF IT DOESN'T EXIST
		[ ! -f ".manufacturer_cache" ] && echo "" > ".manufacturer_cache"

		#CHECK CACHE
		local manufacturer=$(grep "${address:0:8}" < ".manufacturer_cache" | awk -F "\t" '{print $2}' | sort -u | head -1)

		#EXCEPTION FOR SUSPECT PRODUCTS
		[[ $address =~ ^FF:FF ]] && manufacturer="SIG Unassigned or Noncompliant OEM"

		# If no cache try if we have ieee-data
		if [ -z "$manufacturer" ] ; then
			_temp=$(echo ${address:0:8} | sed 's/://gi')
			_found=false
			local remote_result=''
			if [ ! ${_found} ] && [ -f /var/lib/ieee-data/oui.csv ] ; then
				remote_result=$(egrep ",${_temp}," /var/lib/ieee-data/oui.csv | cut -d\, -f3)
				_found=true
			fi
			if [ ! ${_found} ] && [ -f /usr/share/ieee-data/oui.csv ] ; then
				remote_result=$(egrep ",${_temp}," /usr/share/ieee-data/oui.csv | cut -d\, -f3)
				_found=true
			fi
			[ -n "$remote_result" ] && echo "${address:0:8} $remote_result" >> .manufacturer_cache
			manufacturer="$remote_result"
		fi

		#IF CACHE DOES NOT EXIST, USE MACVENDORS.COM
		if [ -z "$manufacturer" ]; then 
			local remote_result=$(curl -sL https://api.macvendors.com/${address:0:8} | grep -vi "error" | head -1 | sed 's/[^A-Za-z ]//gi')

			#MAKE SURE WE DONT' SCREW UP THE MANUFACTUERE'S FILE
			if [[ ! "$remote_result" = *html* ]]; then
				[ -n "$remote_result" ] && echo "${address:0:8}	$remote_result" >> .manufacturer_cache
				manufacturer="$remote_result"
			fi 
		fi

		#SET DEFAULT MANUFACTURER 
		[ -z "$manufacturer" ] && manufacturer="Unknown" && echo "${address:0:8}	Unknown" >> .manufacturer_cache
		echo "$manufacturer"
	fi 
}