dlook

#!/bin/bash

#djoslin 7/2018

#gather zone data from dns servers then search with grep.
#assumes access to dallas.
#save script somewhere on your path.
#chmod a+x dlook.

path=$(dirname "$0")
dnslist=$path/dnslist.txt
dns_server=daldnsslave10.dal.moz.com

function getrecords
{
	ping -q -c1 $dns_server  2>/dev/null 1>/dev/null
	if [ "$?" -eq "0" ]; then
		host -l tuk.moz.com $dns_server > $dnslist
		host -l dal.moz.com $dns_server >> $dnslist
	else
		echo "Cannot reach $dns_server. If remote, try opening VPN to dallas."
	fi
}

if [  ! -f $dnslist ]; then
	getrecords
else
	age=`perl -e 'printf "%d\n" ,(time()-((stat(shift))[9]))/60;' $dnslist`
	if [ "$age" -gt "120" ]; then
		getrecords
	fi
fi

if [ $1 ]; then
  grep $1 $dnslist
else
  echo "Enter a string to grep against all hosts in dns."
fi