#!/bin/sh
#
# $NetBSD: ipfilter,v 1.10 2001/02/28 17:03:50 lukem Exp $
# $FreeBSD: src/etc/rc.d/ipfilter,v 1.10 2003/04/30 02:54:17 mtm Exp $
# $DragonFly: src/etc/rc.d/ipfilter,v 1.3 2004/01/26 17:21:15 rob Exp $
#

# PROVIDE: ipfilter
# REQUIRE: root beforenetlkm mountcritlocal tty ipmon
# BEFORE:  netif
# KEYWORD: DragonFly

. /etc/rc.subr

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

	stop_precmd="test -f ${ipfilter_rules} -o -f ${ipv6_ipfilter_rules}"

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()
{
	 # load ipfilter kernel module if needed
	if ! sysctl net.inet.ipf.fr_pass > /dev/null 2>&1; then
		if kldload ipl; then
			info 'IP-filter module loaded.'
		else
			err 1 'IP-filter module failed to load.'
		fi
	fi
	# check for ipfilter rules
	if [ ! -r "${ipfilter_rules}" ] && [ ! -r "${ipv6_ipfilter_rules}" ]
	then
		warn 'IP-filter: NO IPF RULES'
		return 1
	fi
	return 0
}

ipfilter_start()
{
	echo "Enabling ipfilter."
		${ipfilter_program:-/sbin/ipf} -EFa
		if [ -r "${ipfilter_rules}" ]; then
			${ipfilter_program:-/sbin/ipf} \
			-f "${ipfilter_rules}" ${ipfilter_flags}
		fi
		${ipfilter_program:-/sbin/ipf} -6 -EFa
		if [ -r "${ipv6_ipfilter_rules}" ]; then
			${ipfilter_program:-/sbin/ipf} -6 \
			-f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
		fi
}

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

ipfilter_reload()
{
	echo "Reloading ipfilter rules."

		 ${ipfilter_program:-/sbin/ipf} -I -Fa
		if [ -r "${ipfilter_rules}" ]; then
			${ipfilter_program:-/sbin/ipf} -I \
			-f "${ipfilter_rules}" ${ipfilter_flags}
		fi
			${ipfilter_program:-/sbin/ipf} -I -6 -Fa
			if [ -r "${ipv6_ipfilter_rules}" ]; then
			${ipfilter_program:-/sbin/ipf} -I -6 \
			-f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
		fi
		${ipfilter_program:-/sbin/ipf} -s
		/sbin/ipf -s

}

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

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

run_rc_command "$1"