HardenedBSD/etc/rc.d/pf

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

# PROVIDE: pf
# REQUIRE: root mountcritlocal netif pflog pfsync
# BEFORE:  routing
# KEYWORD: nojail

. /etc/rc.subr

name="pf"
rcvar=`set_rcvar`
load_rc_config $name
start_precmd="pf_prestart"
start_cmd="pf_start"
stop_cmd="pf_stop"
check_cmd="pf_check"
reload_cmd="pf_reload"
resync_cmd="pf_resync"
status_cmd="pf_status"
extra_commands="check reload resync status"
required_files="$pf_rules"

pf_prestart()
{
	# load pf kernel module if needed
	if ! kldstat -q -m pf ; then
		if kldload pf ; then
			info 'pf module loaded.'
		else
			warn 'pf module failed to load.'
			return 1
		fi
	fi
	return 0
}

pf_start()
{
	echo "Enabling pf."
	$pf_program -Fall > /dev/null 2>&1
	$pf_program -f "$pf_rules" $pf_flags
	if ! $pf_program -s info | grep -q "Enabled" ; then
		$pf_program -e
	fi
}

pf_stop()
{
	if $pf_program -s info | grep -q "Enabled" ; then
		echo "Disabling pf."
		$pf_program -d
	fi
}

pf_check()
{
	echo "Checking pf rules."
	$pf_program -n -f "$pf_rules"
}

pf_reload()
{
	echo "Reloading pf rules."
	$pf_program -n -f "$pf_rules" || return 1
	# Flush everything but existing state entries that way when
	# rules are read in, it doesn't break established connections.
	$pf_program -Fnat -Fqueue -Frules -FSources -Finfo -FTables -Fosfp > /dev/null 2>&1
	$pf_program -f "$pf_rules" $pf_flags
}

pf_resync()
{
	$pf_program -f "$pf_rules" $pf_flags
}

pf_status()
{
	$pf_program -s info
}

run_rc_command "$1"