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#!/bin/sh
#
# $NetBSD: ipfilter,v 1.10 2001/02/28 17:03:50 lukem Exp $
# $FreeBSD$
#
# PROVIDE: ipfilter
# REQUIRE: root beforenetlkm mountcritlocal ipmon
# BEFORE: netif
# KEYWORD: FreeBSD
. /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 ! kldstat -v | grep "IP Filter" > /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."
if [ `sysctl -n net.inet.ipf.fr_running` -eq 0 ]; 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
${ipfilter_program:-/sbin/ipf} -6 -Fa
if [ -r "${ipv6_ipfilter_rules}" ]; then
${ipfilter_program:-/sbin/ipf} -6 \
-f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
fi
}
ipfilter_stop()
{
# XXX - The ipf -D command is not effective for 'lkm's
if [ `sysctl -n net.inet.ipf.fr_running` -eq 1 ]; 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}
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
}
ipfilter_resync()
{
# Don't resync if ipfilter is not loaded
if ! kldstat -v | grep "IP Filter" > /dev/null 2>&1; then
return
fi
${ipfilter_program:-/sbin/ipf} -y ${ipfilter_flags}
}
ipfilter_status()
{
${ipfilter_program:-/sbin/ipf} -V
}
run_rc_command "$1"
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