#!/bin/sh

#	$OpenBSD: spamd-setup.sh,v 1.4 2003/01/22 01:38:10 deraadt Exp $
#
# Copyright (c) 2002 Theo de Raadt.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

usage() {
	echo "usage: spamd-setup [-s12] [-f file] [-w whitelist]";
	exit 1
}

case $# in
0)	usage
	;;
esac

filter() {
	grep -v '#' | cut -d' ' -f1 | sort
}

pfcmd() {
	awk '{ printf("rdr inet proto tcp from %s to any port 25 -> 127.0.0.1 port 8025\n", $1); } '
}

fetch() {
	ftp -V -o - "$1"
}

R=`mktemp /tmp/_spamdXXXXXX` || exit 1
W=`mktemp /tmp/_spamwXXXXXX` || exit 1
trap "rm -f $R $W; exit 0" 0
trap "rm -f $R $W; exit 1" 1 2 3 13 15

while :
	do case "$1" in
	-s|-1)
		fetch http://www.spews.org/spews_list_level1.txt | filter >> $R
		;;
	-2)
		fetch http://www.spews.org/spews_list_level2.txt | filter >> $R
		;;
	-f)
		cat $2 | filter >> $R
		shift
		;;
	-w)
		cat $2 | filter >> $W
		shift
		;;
	*)
		break
		;;
	esac
	shift
done

if [ $# != 0 ]; then
	usage
fi

# knock out whitelist here

cat $R | uniq | pfcmd | pfctl -a spamd:spews -f -
exit 0