core130: Ship updated firewall script

[people/pmueller/ipfire-2.x.git] / src / initscripts / system / snort

#!/bin/sh
########################################################################
# Begin $rc_base/init.d/snort
#
# Description : Snort Initscript
#
# Authors     : Michael Tremer for ipfire.org - mitch@ipfire.org
#
# Version     : 01.00
#
# Notes       :
#
########################################################################

. /etc/sysconfig/rc
. ${rc_functions}

PATH=/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin; export PATH

eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
eval $(/usr/local/bin/readhash /var/ipfire/snort/settings)

ALIASFILE="/var/ipfire/ethernet/aliases"

case "$1" in
        start)
		if [ "$BLUE_NETADDRESS" ]; then
			BLUE_NET="$BLUE_NETADDRESS/$BLUE_NETMASK,"
			BLUE_IP="$BLUE_ADDRESS,"
		fi

		if [ "$ORANGE_NETADDRESS" ]; then
			ORANGE_NET="$ORANGE_NETADDRESS/$ORANGE_NETMASK,"
			ORANGE_IP="$ORANGE_ADDRESS,"
		fi

		if [ "$ENABLE_SNORT_ORANGE" == "on" ]; then
			DEVICES+="$ORANGE_DEV "
			HOMENET+="$ORANGE_IP"
		else
			HOMENET+="$ORANGE_NET"
		fi

		if [ "$ENABLE_SNORT_BLUE" == "on" ]; then
			DEVICES+="$BLUE_DEV "
			HOMENET+="$BLUE_IP"
		else
			HOMENET+="$BLUE_NET"
		fi

		if [ "$ENABLE_SNORT_GREEN" == "on" ]; then
			DEVICES+="$GREEN_DEV "
			HOMENET+="$GREEN_ADDRESS,"
		else
			HOMENET+="$GREEN_NETADDRESS/$GREEN_NETMASK,"
		fi

		if [ "$ENABLE_SNORT" == "on" ]; then
			DEVICES+=`cat /var/ipfire/red/iface 2>/dev/null`
			LOCAL_IP=`cat /var/ipfire/red/local-ipaddress 2>/dev/null`
			if [ "$LOCAL_IP" ]; then
				HOMENET+="$LOCAL_IP,"
			fi

			# Check if the red device is set to static and
			# any aliases have been configured.
			if [ "${RED_TYPE}" == "STATIC" ] && [ -s "${ALIASFILE}" ]; then
				# Read in aliases file.
				while IFS="," read -r address mode remark; do
					# Check if the alias is enabled.
					[ "${mode}" = "on" ] || continue

					# Add alias to the list of HOMENET addresses.
					HOMENET+="${address},"
				done < "${ALIASFILE}"
			fi
		fi
		HOMENET+="127.0.0.1"
		echo "ipvar HOME_NET [$HOMENET]" > /etc/snort/vars

		DNS1=`cat /var/ipfire/red/dns1 2>/dev/null`
		DNS2=`cat /var/ipfire/red/dns2 2>/dev/null`

		if [ "$DNS2" ]; then
			echo "ipvar DNS_SERVERS [$DNS1,$DNS2]" >> /etc/snort/vars
		else
			echo "ipvar DNS_SERVERS $DNS1" >> /etc/snort/vars
		fi

                for DEVICE in $DEVICES; do
                        boot_mesg "Starting Intrusion Detection System on $DEVICE..."
                        /usr/sbin/snort -c /etc/snort/snort.conf -i $DEVICE -D -l /var/log/snort --create-pidfile --nolock-pidfile --pid-path /var/run
                        evaluate_retval
			sleep 1
                        chmod 644 /var/run/snort_$DEVICE.pid
                done
	;;

        stop)
               DEVICES=""
               if [ -r /var/run/snort_$BLUE_DEV.pid ]; then
                 DEVICES+="$BLUE_DEV "
               fi
               
               if [ -r /var/run/snort_$GREEN_DEV.pid ]; then
                 DEVICES+="$GREEN_DEV "
              fi
             
              if [ -r /var/run/snort_$ORANGE_DEV.pid ]; then
                 DEVICES+="$ORANGE_DEV "
              fi
      
              RED=`cat /var/ipfire/red/iface 2>/dev/null`
              if [ -r /var/run/snort_$RED.pid ]; then
                 DEVICES+=`cat /var/ipfire/red/iface 2>/dev/null`
              fi
       
              for DEVICE in $DEVICES; do
                 boot_mesg "Stopping Intrusion Detection System on $DEVICE..."
                 killproc -p /var/run/snort_$DEVICE.pid /var/run
              done
              
              rm /var/run/snort_* >/dev/null 2>/dev/null

		# Don't report returncode of rm if snort was not started
		exit 0
        ;;
                
        status)
                statusproc /usr/sbin/snort
                ;;
                
        restart)
                $0 stop
                $0 start
                ;;
                
        *)
                echo "Usage: $0 {start|stop|restart|status}"
                exit 1
                ;;
esac

chmod 644 /var/log/snort/* 2>/dev/null

# End $rc_base/init.d/snort