#!/bin/sh
#set HOME_NET to LAN network

BASEDIR=/packetprotector
IP=`nvram get lan_ipaddr`
NETMASK=`nvram get lan_netmask`
NETWORK=`/sbin/ipcalc -n $IP $NETMASK | cut -d "=" -f 2`
PREFIX=`/sbin/ipcalc -p $IP $NETMASK | cut -d "=" -f 2`
CIDR="$NETWORK\/$PREFIX"

#forward slash is escaped (above) for use in sed (below)
sed -i "s/^var HOME_NET .*/var HOME_NET $CIDR/" $BASEDIR/etc/snort/snort.conf
sed -i "s/^var HOME_NET .*/var HOME_NET $CIDR/" $BASEDIR/etc/snort/snort-inline.conf 
