#!/bin/bash
# FILE:       	wagon:back/lib/ns_lookup_send
# DESCRIPTION:	Send nslookup command to DNS master server
# USAGE:      	send [option] cmd
# ERRORS:
# 	3: not found
# 	4: server down
# 	5: other nslookup error
# 	6: nslookup refused

source /etc/wagon/config

# Ignore SC2068 and leave ${@} unquoted so it can expand
if ! res="$(/usr/bin/nslookup ${@} "${DNS_MASTER}")"
	then exit 5
fi
if <<<"${res}" grep ';; .* timed out'
	then exit 4
elif <<<"${res}" grep "\*\* .*: NXDOMAIN\|\*\*\* .*: No answer"
	then exit 3
elif <<<"${res}" grep "\*\* .*: REFUSED"
	then exit 6
else printf '%s' "${res}"
fi