etc/rc.d/ipfilter

   1 #!/bin/sh
   2 #
   3 # $NetBSD: ipfilter,v 1.10 2001/02/28 17:03:50 lukem Exp $
   4 # $FreeBSD: src/etc/rc.d/ipfilter,v 1.10 2003/04/30 02:54:17 mtm Exp $
   5 # $DragonFly: src/etc/rc.d/ipfilter,v 1.6 2005/11/19 21:47:32 swildner Exp $
   6 #
   7
   8 # PROVIDE: ipfilter
   9 # REQUIRE: root mountcritlocal tty ipmon
  10 # BEFORE:  netif
  11 # KEYWORD: nojail
  12
  13 . /etc/rc.subr
  14
  15 name="ipfilter"
  16 rcvar=`set_rcvar`
  17 load_rc_config $name
  18 stop_precmd="test -f ${ipfilter_rules} -o -f ${ipv6_ipfilter_rules}"
  19
  20 start_precmd="ipfilter_prestart"
  21 start_cmd="ipfilter_start"
  22 stop_cmd="ipfilter_stop"
  23 reload_precmd="$stop_precmd"
  24 reload_cmd="ipfilter_reload"
  25 resync_precmd="$stop_precmd"
  26 resync_cmd="ipfilter_resync"
  27 status_precmd="$stop_precmd"
  28 status_cmd="ipfilter_status"
  29 extra_commands="reload resync status"
  30
  31 ipfilter_loaded()
  32 {
  33         if ! kldstat -v | grep "IP Filter" > /dev/null 2>&1; then
  34                 return 1
  35         else
  36                 return 0
  37         fi
  38 }
  39
  40 ipfilter_prestart()
  41 {
  42         # load ipfilter kernel module if needed
  43         if ! ipfilter_loaded; then
  44                 if kldload ipl; then
  45                         info 'IP-filter module loaded.'
  46                 else
  47                         err 1 'IP-filter module failed to load.'
  48                 fi
  49         fi
  50
  51         # check for ipfilter rules
  52         if [ ! -r "${ipfilter_rules}" ] && [ ! -r "${ipv6_ipfilter_rules}" ]
  53         then
  54                 warn 'IP-filter: NO IPF RULES'
  55                 return 1
  56         fi
  57         return 0
  58 }
  59
  60 ipfilter_start()
  61 {
  62         echo "Enabling ipfilter."
  63         if [ `sysctl -n net.inet.ipf.fr_running` -eq 0 ]; then
  64                 ${ipfilter_program:-/sbin/ipf} -E
  65         fi
  66         ${ipfilter_program:-/sbin/ipf} -Fa
  67         if [ -r "${ipfilter_rules}" ]; then
  68                 ${ipfilter_program:-/sbin/ipf} \
  69                     -f "${ipfilter_rules}" ${ipfilter_flags}
  70         fi
  71         ${ipfilter_program:-/sbin/ipf} -6 -Fa
  72         if [ -r "${ipv6_ipfilter_rules}" ]; then
  73                 ${ipfilter_program:-/sbin/ipf} -6 \
  74                     -f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
  75         fi
  76 }
  77
  78 ipfilter_stop()
  79 {
  80         # XXX - The ipf -D command is not effective for 'lkm's
  81         if [ `sysctl -n net.inet.ipf.fr_running` -eq 1 ]; then
  82                 echo "Saving firewall state tables"
  83                 ${ipfs_program:-/sbin/ipfs} -W ${ipfs_flags}
  84                 echo "Disabling ipfilter."
  85                 ${ipfilter_program:-/sbin/ipf} -D
  86         fi
  87 }
  88
  89 ipfilter_reload()
  90 {
  91         echo "Reloading ipfilter rules."
  92
  93         ${ipfilter_program:-/sbin/ipf} -I -Fa
  94         if [ -r "${ipfilter_rules}" ]; then
  95                 ${ipfilter_program:-/sbin/ipf} -I \
  96                     -f "${ipfilter_rules}" ${ipfilter_flags}
  97         fi
  98         ${ipfilter_program:-/sbin/ipf} -I -6 -Fa
  99         if [ -r "${ipv6_ipfilter_rules}" ]; then
 100                 ${ipfilter_program:-/sbin/ipf} -I -6 \
 101                     -f "${ipv6_ipfilter_rules}" ${ipfilter_flags}
 102         fi
 103         ${ipfilter_program:-/sbin/ipf} -s
 104
 105 }
 106
 107 ipfilter_resync()
 108 {
 109         # Don't resync if ipfilter is not loaded
 110         if ! ipfilter_loaded; then
 111                  return
 112         fi
 113         ${ipfilter_program:-/sbin/ipf} -y ${ipfilter_flags}
 114 }
 115
 116 ipfilter_status()
 117 {
 118         ${ipfilter_program:-/sbin/ipf} -V
 119 }
 120
 121 run_rc_command "$1"