#!/bin/sh
#
# smtpcheck
# John Simpson <jms1@jms1.net> 2005-10-07
#
# djb's "tcprulescheck" program relies on environment variables being 
# set, which is a pain when you're working on a command line.
#
# this script reads an IP address from the command line, does a dns 
# query to find out what name corresponds to the IP, and sets up the
# environment variables so that tcprulescheck can do its job.
#
###############################################################################
#
# Copyright (C) 2005 John Simpson.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
# or visit http://www.gnu.org/licenses/gpl.txt
#
###############################################################################

# the cdb file against which you want to check the IP addresses.
CDB="/etc/tcp/smtp.cdb"

TCPREMOTEIP=${1:?No IP address specified}
export TCPREMOTEIP

while [ -n "$TCPREMOTEIP" ]
do
	echo "(checking $TCPREMOTEIP)"

	n=`dnsname $TCPREMOTEIP`
	if [ -n "$n" ]
	then
		TCPREMOTEHOST=$n
		export TCPREMOTEHOST
	else
		export -n TCPREMOTEHOST
	fi

	tcprulescheck $CDB

	shift
	TCPREMOTEIP=${1:-}

	if [ -n "$TCPREMOTEIP" ]
	then
		echo ""
	fi
done