xref: /dragonfly/usr.sbin/prefix/prefix.sh (revision 0db87cb7) 
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
33iface=$1
34prefix=$2
35
36usage() {
37    echo "usage: prefix interface prefix [set|delete]"
38}
39
40# We're now invalidating the prefix ioctls and the corresponding command.
41echo "** The prefix command is almost invalidated. Please use ifconfig(8). **"
42
43if [ X"$iface" = X -o X"$prefix" = X ]; then
44    usage
45    exit 1
46fi
47
48if [ -z $3 ]; then
49    command=set
50else
51    command=$3
52fi
53
54case $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    ;;
75esac
76