#!/bin/sh
#
# $FreeBSD$
#

# PROVIDE: ipfilter
# REQUIRE: FILESYSTEMS
# KEYWORD: nojail

. /etc/rc.subr

name="ipfilter"
desc="IP packet filter"
rcvar="ipfilter_enable"
load_rc_config $name
stop_precmd="test -f ${ipfilter_rules} -o -f ${ipv6_ipfilter_rules}"

start_precmd="$stop_precmd"
start_cmd="ipfilter_start"
stop_cmd="ipfilter_stop"
reload_precmd="$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"
required_modules="ipl:ipfilter"

ipfilter_start()
{
	echo "Enabling ipfilter."
	if ! ${ipfilter_program:-/sbin/ipf} -V | grep -q 'Running: yes'; then
		${ipfilter_program:-/sbin/ipf} -E
	fi
	${ipfilter_program:-/sbin/ipf} -Fa
	if [ -r "${ipfilter_rules}" ]; then
		${ipfilter_program:-/sbin/ipf} \
		    -f "${ipfilter_rules}" ${ipfilter_flags}
	fi
	if [ -r "${ipv6_ipfilter_rules}" ]; then
		${ipfilter_program:-/sbin/ipf} -6 \
		    -f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
	fi
}

ipfilter_stop()
{
	if ${ipfilter_program:-/sbin/ipf} -V | grep -q 'Running: yes'; then
		echo "Saving firewall state tables"
		${ipfs_program:-/sbin/ipfs} -W ${ipfs_flags}
		echo "Disabling ipfilter."
		${ipfilter_program:-/sbin/ipf} -D
	fi
}

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}
		if [ $? -ne 0 ]; then
			err 1 'Load of rules into alternate set failed; aborting reload'
		fi
	fi
	if [ -r "${ipv6_ipfilter_rules}" ]; then
		${ipfilter_program:-/sbin/ipf} -I -6 \
		    -f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
		if [ $? -ne 0 ]; then
			err 1 'Load of IPv6 rules into alternate set failed; aborting reload'
		fi
	fi
	${ipfilter_program:-/sbin/ipf} -s

}

ipfilter_resync()
{
	${ipfilter_program:-/sbin/ipf} -y ${ipfilter_flags}
}

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

run_rc_command "$1"