usr.sbin/prefix/prefix.sh

   1 #!/bin/sh
   2
   3 #       $KAME: prefix.sh,v 1.12 2001/05/26 23:38:10 itojun Exp $
   4 #       $FreeBSD: src/usr.sbin/prefix/prefix.sh,v 1.1.2.1 2001/07/03 11:02:08 ume Exp $
   5 #       $DragonFly: src/usr.sbin/prefix/prefix.sh,v 1.2 2003/06/17 04:30:01 dillon Exp $
   6
   7 # Copyright (c) 2001 WIDE Project. All rights reserved.
   8 #
   9 # Redistribution and use in source and binary forms, with or without
  10 # modification, are permitted provided that the following conditions
  11 # are met:
  12 # 1. Redistributions of source code must retain the above copyright
  13 #    notice, this list of conditions and the following disclaimer.
  14 # 2. Redistributions in binary form must reproduce the above copyright
  15 #    notice, this list of conditions and the following disclaimer in the
  16 #    documentation and/or other materials provided with the distribution.
  17 # 3. Neither the name of the project nor the names of its contributors
  18 #    may be used to endorse or promote products derived from this software
  19 #    without specific prior written permission.
  20 #
  21 # THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  22 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24 # ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  25 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32
  33 iface=$1
  34 prefix=$2
  35
  36 usage() {
  37     echo "usage: prefix interface prefix [set|delete]"
  38 }
  39
  40 # We're now invalidating the prefix ioctls and the corresponding command.
  41 echo "** The prefix command is almost invalidated. Please use ifconfig(8). **"
  42
  43 if [ X"$iface" = X -o X"$prefix" = X ]; then
  44     usage
  45     exit 1
  46 fi
  47
  48 if [ -z $3 ]; then
  49     command=set
  50 else
  51     command=$3
  52 fi
  53
  54 case $command in
  55     set)
  56         laddr=`ifconfig $iface inet6 | grep 'inet6 fe80:' | head -1 | awk '{print $2}'`
  57         if [ X"$laddr" = X ]; then
  58             echo "prefix: no interface ID found"
  59             exit 1
  60         fi
  61         hostid=`echo $laddr | sed -e 's/^fe80:[0-9a-fA-F]*:/fe80::/' -e 's/^fe80:://' -e 's/%.*//'`
  62         address=$2$hostid
  63         exec ifconfig $iface inet6 $address prefixlen 64 alias
  64     ;;
  65     delete)
  66         addrs=`ifconfig $iface inet6 | grep "inet6 $prefix" |  awk '{print $2}'`
  67         for a in $addrs; do
  68             ifconfig $iface inet6 $a -alias
  69         done
  70     ;;
  71     *)
  72         usage
  73         exit 1
  74     ;;
  75 esac