ipfilter revision 128470 
150476Speter#!/bin/sh
247857Sbrian#
347857Sbrian# $NetBSD: ipfilter,v 1.10 2001/02/28 17:03:50 lukem Exp $
447857Sbrian# $FreeBSD: head/etc/rc.d/ipfilter 128470 2004-04-20 13:30:49Z darrenr $
547857Sbrian#
647857Sbrian
747857Sbrian# PROVIDE: ipfilter
888078Scjc# REQUIRE: root mountcritlocal
947857Sbrian# BEFORE:  netif
1047857Sbrian# KEYWORD: FreeBSD nojail
1188078Scjc
1247857Sbrian. /etc/rc.subr
1347857Sbrian
1488078Scjcname="ipfilter"
1547857Sbrianrcvar=`set_rcvar`
1647857Sbrianload_rc_config $name
1747857Sbrianstop_precmd="test -f ${ipfilter_rules} -o -f ${ipv6_ipfilter_rules}"
18
19start_precmd="ipfilter_prestart"
20start_cmd="ipfilter_start"
21stop_cmd="ipfilter_stop"
22reload_precmd="$stop_precmd"
23reload_cmd="ipfilter_reload"
24resync_precmd="$stop_precmd"
25resync_cmd="ipfilter_resync"
26status_precmd="$stop_precmd"
27status_cmd="ipfilter_status"
28extra_commands="reload resync status"
29
30ipfilter_loaded()
31{
32	if ! kldstat -v | grep "IP Filter" > /dev/null 2>&1; then
33		return 1
34	else
35		return 0
36	fi
37}
38
39ipfilter_prestart()
40{
41	# load ipfilter kernel module if needed
42	if ! ipfilter_loaded; then
43		if kldload ipl; then
44			info 'IP-filter module loaded.'
45		else
46			err 1 'IP-filter module failed to load.'
47		fi
48	fi
49
50	# check for ipfilter rules
51	if [ ! -r "${ipfilter_rules}" ] && [ ! -r "${ipv6_ipfilter_rules}" ]
52	then
53		warn 'IP-filter: NO IPF RULES'
54		return 1
55	fi
56	return 0
57}
58
59ipfilter_start()
60{
61	echo "Enabling ipfilter."
62	if [ `sysctl -n net.inet.ipf.fr_running` -eq 0 ]; then
63		${ipfilter_program:-/sbin/ipf} -E
64	fi
65	${ipfilter_program:-/sbin/ipf} -Fa
66	if [ -r "${ipfilter_rules}" ]; then
67		${ipfilter_program:-/sbin/ipf} \
68		    -f "${ipfilter_rules}" ${ipfilter_flags}
69	fi
70	${ipfilter_program:-/sbin/ipf} -6 -Fa
71	if [ -r "${ipv6_ipfilter_rules}" ]; then
72		${ipfilter_program:-/sbin/ipf} -6 \
73		    -f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
74	fi
75}
76
77ipfilter_stop()
78{
79	# XXX - The ipf -D command is not effective for 'lkm's
80	if [ `sysctl -n net.inet.ipf.fr_running` -eq 1 ]; then
81		echo "Saving firewall state tables"
82		${ipfs_program:-/sbin/ipfs} -W ${ipfs_flags}
83		echo "Disabling ipfilter."
84		${ipfilter_program:-/sbin/ipf} -D
85	fi
86}
87
88ipfilter_reload()
89{
90	echo "Reloading ipfilter rules."
91
92	${ipfilter_program:-/sbin/ipf} -I -Fa
93	if [ -r "${ipfilter_rules}" ]; then
94		${ipfilter_program:-/sbin/ipf} -I \
95		    -f "${ipfilter_rules}" ${ipfilter_flags}
96	fi
97	${ipfilter_program:-/sbin/ipf} -I -6 -Fa
98	if [ -r "${ipv6_ipfilter_rules}" ]; then
99		${ipfilter_program:-/sbin/ipf} -I -6 \
100		    -f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
101	fi
102	${ipfilter_program:-/sbin/ipf} -s
103
104}
105
106ipfilter_resync()
107{
108	# Don't resync if ipfilter is not loaded
109	if ! ipfilter_loaded; then
110		 return
111	fi
112	${ipfilter_program:-/sbin/ipf} -y ${ipfilter_flags}
113}
114
115ipfilter_status()
116{
117	${ipfilter_program:-/sbin/ipf} -V
118}
119
120run_rc_command "$1"
121