#!/bin/sh
#
# $NetBSD: ipfilter,v 1.10 2001/02/28 17:03:50 lukem Exp $
# $FreeBSD$
#

# PROVIDE: ipfilter
# REQUIRE: root beforenetlkm mountcritlocal tty
# KEYWORD: FreeBSD NetBSD

. /etc/rc.subr

name="ipfilter"
rcvar=`set_rcvar`
load_rc_config $name

case ${OSTYPE} in
FreeBSD)
	stop_precmd="test -f ${ipfilter_rules}"
	;;
NetBSD)
	stop_precmd="test -f /etc/ipf.conf -o -f /etc/ipf6.conf"
	;;
esac

start_precmd="ipfilter_prestart"
start_cmd="ipfilter_start"
stop_cmd="ipfilter_stop"
reload_precmd="$stop_precmd"
reload_cmd="ipfilter_reload"
resync_precmd="$stop_precmd"
resync_cmd="ipfilter_resync"
status_precmd="$stop_precmd"
status_cmd="ipfilter_status"
extra_commands="reload resync status"

ipfilter_prestart()
{
case ${OSTYPE} in
FreeBSD)
	# load ipfilter kernel module if needed
	if ! sysctl net.inet.ipf.fr_pass > /dev/null 2>&1; then
		if kldload ipl ; then
			echo 'IP-filter module loaded.'
		else
			warn 'IP-filter module failed to load.'
			return 1
		fi
	fi

	# check for ipfilter rules
	if [ ! -r "${ipfilter_rules}" ]; then
		warn 'IP-filter: NO IPF RULES'
		return 1
	fi
	;;
NetBSD)
	if [ ! -f /etc/ipf.conf ] && [ ! -f /etc/ipf6.conf ]; then
		warn "/etc/ipf*.conf not readable; ipfilter start aborted."
			#
			# If booting directly to multiuser, send SIGTERM to
			# the parent (/etc/rc) to abort the boot
			#
		if [ "$autoboot" = yes ]; then
			echo "ERROR: ABORTING BOOT (sending SIGTERM to parent)!"
			kill -TERM $$
			exit 1
		fi
		return 1
	fi
	;;
esac
	return 0
}

ipfilter_start()
{
	echo "Enabling ipfilter."
	case ${OSTYPE} in
	FreeBSD)
		${ipfilter_program:-/sbin/ipf} -Fa -f \
	    	    "${ipfilter_rules}" ${ipfilter_flags}
		;;
	NetBSD)
		/sbin/ipf -E -Fa
		if [ -f /etc/ipf.conf ]; then
			/sbin/ipf -f /etc/ipf.conf
		fi
		if [ -f /etc/ipf6.conf ]; then
			/sbin/ipf -6 -f /etc/ipf6.conf
		fi
		;;
	esac
}

ipfilter_stop()
{
	case ${OSTYPE} in
	FreeBSD)
		echo "Saving firewall state tables"
		${ipfs_program:-/sbin/ipfs} -W ${ipfs_flags}
		;;
	NetBSD)
		;;
	esac
	# XXX - The following command is not effective for 'lkm's
	echo "Disabling ipfilter."
	/sbin/ipf -D
}

ipfilter_reload()
{
	echo "Reloading ipfilter rules."

	case ${OSTYPE} in
	FreeBSD)
		${ipfilter_program:-/sbin/ipf} -I -Fa -f \
	    	    "${ipfilter_rules}" ${ipfilter_flags}
		;;
	NetBSD)
		/sbin/ipf -I -Fa
		if [ -f /etc/ipf.conf ] && ! /sbin/ipf -I -f /etc/ipf.conf; then
			err 1 "reload of ipf.conf failed; not swapping to" \
			    " new ruleset."
		fi
		if [ -f /etc/ipf6.conf ] && \
		    ! /sbin/ipf -I -6 -f /etc/ipf6.conf; then
			err 1 "reload of ipf6.conf failed; not swapping to" \
			    " new ruleset."
		fi
		/sbin/ipf -s
		;;
	esac

}

ipfilter_resync()
{
	case ${OSTYPE} in
	FreeBSD)
		# Don't resync if ipfilter is not loaded
		[ sysctl net.inet.ipf.fr_pass > /dev/null 2>&1 ] && return
		;;
	esac
	${ipfilter_program:-/sbin/ipf} -y ${ipfilter_flags}
}

ipfilter_status()
{
	${ipfilter_program:-/sbin/ipf} -V
}

run_rc_command "$1"