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Date:      Sun, 21 Mar 2004 20:20:41 +0100
From:      Max Laier <max@love2party.net>
To:        Claus Guttesen <cguttesen@yahoo.dk>
Cc:        freebsd-current@freebsd.org
Subject:   Re: pf startup script
Message-ID:  <20040321192041.GA43656@router.laiers.local>
In-Reply-To: <20040320222504.18517.qmail@web14106.mail.yahoo.com>
References:  <024201c40eba$22912520$0201a8c0@idlewild.net> <20040320222504.18517.qmail@web14106.mail.yahoo.com>
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On Sat, Mar 20, 2004 at 11:25:04PM +0100, Claus Guttesen wrote:
> > Is there supposed to be a startup script for pf
> > installed now that it's part
> > of the base system, or am I missing something?
>=20
> A bsd-fellow suggested I used the startup-script from
> pf in the ports-col. I placed it in
> /usr/local/etc/rc.d and changed the script, so it
> would load the pf-mod. from /boot/kernel.
>=20
> You cold copy ipfilter/ipfw and make a pf-script.

I planned to commit something for a while, but real-life (i.e. exams) and
missing libpcap-support -> missing pflogd stopped me until now. Attached is
my wip-version of rc.d/pf and required diff to defaults/rc.conf. Comments
welcome, as I am not very familiar with rcNG (it's more or less a copy of
the ipfilter script).

--=20
Best regards,				| mlaier@freebsd.org
Max Laier				| ICQ #67774661
http://pf4freebsd.love2party.net/	| mlaier@EFnet
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#!/bin/sh
#
# $FreeBSD$
#

# PROVIDE: pf
# REQUIRE: root beforenetlkm mountcritlocal netif
# BEFORE:  DAEMON LOGIN
# KEYWORD: FreeBSD nojail

. /etc/rc.subr

name="pf"
rcvar=`set_rcvar`
load_rc_config $name
stop_precmd="test -f ${pf_rules}"
start_precmd="pf_prestart"
start_cmd="pf_start"
stop_cmd="pf_stop"
reload_precmd="$stop_precmd"
reload_cmd="pf_reload"
resync_precmd="$stop_precmd"
resync_cmd="pf_resync"
status_precmd="$stop_precmd"
status_cmd="pf_status"
extra_commands="reload resync status"

pf_prestart()
{
	# load pf kernel module if needed
	if ! kldstat -v | grep -q pf\$; then
		if kldload pf; then
			info 'pf module loaded.'
		else
			err 1 'pf module failed to load.'
		fi
	fi

	# check for pf rules
	if [ ! -r "${pf_rules}" ]
	then
		warn 'pf: NO PF RULESET FOUND'
		return 1
	fi
}

pf_start()
{
	echo "Enabling pf."
	if ! ${pf_program:-/sbin/pfctl} -si | grep -q "Enabled" ; then
		${pf_program:-/sbin/pfctl} -e
	fi
	${pf_program:-/sbin/pfctl} -Fa 2>&1 > /dev/null
	if [ -r "${pf_rules}" ]; then
		${pf_program:-/sbin/pfctl} \
		    -f "${pf_rules}" ${pf_flags}
	fi
}

pf_stop()
{
	if ${pf_program:-/sbin/pfctl} -si | grep -q "Enabled" ; then
		echo "Disabling pf."
		${pf_program:-/sbin/pfctl} -d
	fi
}

pf_reload()
{
	echo "Reloading pf rules."

	${pf_program:-/sbin/pfctl} -Fa 2>&1 > /dev/null
	if [ -r "${pf_rules}" ]; then
		${pf_program:-/sbin/pfctl} \
		    -f "${pf_rules}" ${pf_flags}
	fi
}

pf_resync()
{
	# Don't resync if pf is not loaded
	if ! kldstat -v | grep -q pf\$ ; then
		 return
	fi
	${pf_program:-/sbin/pfctl} -f "${pf_rules}" ${pf_flags}
}

pf_status()
{
	${pf_program:-/sbin/pfctl} -si
}

run_rc_command "$1"

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--- rc.conf~	Sat Mar 20 03:22:02 2004
+++ rc.conf	Sun Mar 21 20:07:41 2004
@@ -98,6 +98,10 @@
 				# of state tables at shutdown and boot
 ipfs_program="/sbin/ipfs"	# where the ipfs program lives
 ipfs_flags=""			# additional flags for ipfs
+pf_enable="NO"			# Set to YES to enable packet filter (pf)
+pf_rules="/etc/pf.conf"		# rules definition file for pf
+pf_program="/sbin/pfctl"	# where the pfctl program lives
+pf_flags=""			# additional flags for pfctl
 tcp_extensions="YES"		# Set to NO to turn off RFC1323 extensions.
 log_in_vain="0"			# >=1 to log connects to ports w/o listeners.
 tcp_keepalive="YES"		# Enable stale TCP connection timeout (or NO).

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