2 # Copyright (c) 2003 The FreeBSD Project. All rights reserved.
4 # Redistribution and use in source and binary forms, with or without
5 # modification, are permitted provided that the following conditions
7 # 1. Redistributions of source code must retain the above copyright
8 # notice, this list of conditions and the following disclaimer.
9 # 2. Redistributions in binary form must reproduce the above copyright
10 # notice, this list of conditions and the following disclaimer in the
11 # documentation and/or other materials provided with the distribution.
13 # THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
14 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 # ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
17 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 # $FreeBSD: src/etc/network.subr,v 1.163 2005/06/30 04:52:47 brooks Exp $
29 # Subroutines commonly used from network startup scripts.
30 # Requires that rc.conf be loaded first.
34 # Evaluate ifconfig(8) arguments for interface $if and
35 # run ifconfig(8) with those arguments. It returns 0 if
36 # arguments were found and executed or 1 if the interface
37 # had no arguments. Pseudo arguments DHCP and WPA are handled
44 ifconfig_args=`ifconfig_getargs $1`
45 if [ -n "${ifconfig_args}" ]; then
46 ifconfig $1 ${ifconfig_args}
51 /etc/rc.d/wpa_supplicant start $1
52 _cfg=0 # XXX: not sure this should count
56 /etc/rc.d/dhclient start $1
64 # Remove all inet entries from the $if interface. It returns
65 # 0 if inet entries were found and removed. It returns 1 if
66 # no entries were found or they could not be removed.
70 [ -z "$1" ] && return 1
74 inetList="`ifconfig $1 | grep 'inet ' | tr "\n" "$_ifs"`"
78 for _inet in $inetList ; do
79 # get rid of extraneous line
80 [ -z "$_inet" ] && break
82 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'`
85 ifconfig $1 ${_inet} delete
92 /etc/rc.d/wpa_supplicant stop $1
96 /etc/rc.d/dhclient stop $1
103 # _ifconfig_getargs if
104 # Echos the arguments for the supplied interface to stdout.
105 # returns 1 if empty. In general, ifconfig_getargs should be used
110 if [ -z "$_ifn" ]; then
114 eval _args=\$ifconfig_$1
115 if [ -z "$_args" -a -n "${pccard_ifconfig}" ]; then
116 for _if in ${removable_interfaces} ; do
117 if [ "$_if" = "$_ifn" ] ; then
118 _args=${pccard_ifconfig}
127 # ifconfig_getargs if
128 # Takes the result from _ifconfig_getargs and removes pseudo
129 # args such as DHCP and WPA.
132 _tmpargs=`_ifconfig_getargs $1`
133 if [ $? -eq 1 ]; then
139 for _arg in $_tmpargs; do
140 if [ "$is_optarg" = "no" ]; then
165 # Returns 0 if the interface is a DHCP interface and 1 otherwise.
168 _tmpargs=`_ifconfig_getargs $1`
169 for _arg in $_tmpargs; do
180 # Returns 0 if the interface is a WPA interface and 1 otherwise.
183 _tmpargs=`_ifconfig_getargs $1`
185 for _arg in $_tmpargs; do
186 if [ "$is_optarg" = "no" ]; then
203 # Configure aliases for network interface $if.
204 # It returns 0 if at least one alias was configured or
205 # 1 if there were none.
212 eval ifconfig_args=\$ifconfig_$1_alias${alias}
213 if [ -n "${ifconfig_args}" ]; then
214 ifconfig $1 ${ifconfig_args} alias
215 alias=$((${alias} + 1))
225 # Remove aliases for network interface $if.
226 # It returns 0 if at least one alias was removed or
227 # 1 if there were none.
234 eval ifconfig_args=\$ifconfig_$1_alias${alias}
235 if [ -n "${ifconfig_args}" ]; then
236 ifconfig $1 ${ifconfig_args} -alias
237 alias=$((${alias} + 1))
247 # Evaluate a startup script for the $if interface.
248 # It returns 0 if a script was found and processed or
249 # 1 if no script was found.
253 if [ -r /etc/start_if.$1 ]; then
261 # Evaluate a shutdown script for the $if interface.
262 # It returns 0 if a script was found and processed or
263 # 1 if no script was found.
267 if [ -r /etc/stop_if.$1 ]; then
274 # Create cloneable interfaces.
280 for ifn in ${cloned_interfaces}; do
281 ifconfig ${ifn} create
282 if [ $? -eq 0 ]; then
283 _list="${_list}${_prefix}${ifn}"
284 [ -z "$_prefix" ] && _prefix=' '
287 debug "Cloned: ${_list}"
290 # Destroy cloned interfaces. Destroyed interfaces are echoed
291 # to standard output.
297 for ifn in ${cloned_interfaces}; do
298 ifconfig ${ifn} destroy
299 if [ $? -eq 0 ]; then
300 _list="${_list}${_prefix}${ifn}"
301 [ -z "$_prefix" ] && _prefix=' '
304 debug "Destroyed clones: ${_list}"
308 case ${gif_interfaces} in
312 for i in ${gif_interfaces}; do
313 eval peers=\$gifconfig_$i
319 ifconfig $i create >/dev/null 2>&1
320 ifconfig $i tunnel ${peers}
330 # Rename all requested interfaces.
335 _ifn_list="`ifconfig -l`"
336 [ -z "$_ifn_list" ] && return 0
337 for _if in ${_ifn_list} ; do
338 eval _ifname=\$ifconfig_${_if}_name
339 if [ ! -z "$_ifname" ]; then
340 ifconfig $_if name $_ifname
347 # list_net_interfaces type
348 # List all network interfaces. The type of interface returned
349 # can be controlled by the type argument. The type
350 # argument can be any of the following:
351 # nodhcp - all interfaces, excluding DHCP configured interfaces
352 # dhcp - list only DHCP configured interfaces
353 # If no argument is specified all network interfaces are output.
354 # Note that the list will include cloned interfaces if applicable.
355 # Cloned interfaces must already exist to have a chance to appear
356 # in the list if ${network_interfaces} is set to `auto'.
358 list_net_interfaces()
362 # Get a list of ALL the interfaces. NOTE: cloned interfaces
363 # have already been configured so they should show up in the
364 # ifconfig -l output.
366 case ${network_interfaces} in
368 _autolist="`ifconfig -l`"
370 for _if in ${_autolist} ; do
371 if [ "$_if" = "lo0" ]; then
374 _tmplist="${_tmplist} ${_if}"
377 _tmplist="${_lo} ${_tmplist}"
380 _tmplist="${network_interfaces} ${cloned_interfaces}"
384 if [ -z "$type" ]; then
389 # Separate out dhcp and non-dhcp interfaces
393 for _if in ${_tmplist} ; do
394 eval _ifarg="\$ifconfig_${_if}"
397 _dhcplist="${_dhcplist}${_aprefix}${_if}"
398 [ -z "$_aprefix" ] && _aprefix=' '
401 _nodhcplist="${_nodhcplist}${_bprefix}${_if}"
402 [ -z "$_bprefix" ] && _bprefix=' '
420 if [ $1 -lt 10 ]; then
439 dig=`hexdigit $((${val} & 15))`
442 while [ ${val} -gt 0 ]; do
443 dig=`hexdigit $((${val} & 15))`
451 # Setup the interfaces for IPv6
452 network6_interface_setup()
456 case ${ipv6_gateway_enable} in
464 for i in $interfaces; do
466 eval prefix=\$ipv6_prefix_$i
467 if [ -n "${prefix}" ]; then
470 laddr=`network6_getladdr $i`
471 hostid=`expr "${laddr}" : 'fe80::\(.*\)%\(.*\)'`
472 for j in ${prefix}; do
473 address=$j\:${hostid}
474 ifconfig $i inet6 ${address} prefixlen 64 alias
476 case ${ipv6_gateway_enable} in
478 # subnet-router anycast address
480 ifconfig $i inet6 $j:: prefixlen 64 \
486 eval ipv6_ifconfig=\$ipv6_ifconfig_$i
487 if [ -n "${ipv6_ifconfig}" ]; then
490 ifconfig $i inet6 ${ipv6_ifconfig} alias
493 if [ ${rtsol_available} = yes -a ${rtsol_interface} = yes ]
496 lo0|gif[0-9]*|stf[0-9]*|faith[0-9]*|lp[0-9]*|sl[0-9]*|tun[0-9]*)
499 rtsol_interfaces="${rtsol_interfaces} ${i}"
507 if [ ${rtsol_available} = yes -a -n "${rtsol_interfaces}" ]; then
508 # Act as endhost - automatically configured.
509 # You can configure only single interface, as
510 # specification assumes that autoconfigured host has
511 # single interface only.
512 sysctl net.inet6.ip6.accept_rtadv=1
513 set ${rtsol_interfaces}
518 for i in $interfaces; do
521 eval ipv6_ifconfig=\$ipv6_ifconfig_${i}_alias${alias}
522 if [ -z "${ipv6_ifconfig}" ]; then
525 ifconfig $i inet6 ${ipv6_ifconfig} alias
526 alias=$((${alias} + 1))
531 # Setup IPv6 to IPv4 mapping
534 case ${stf_interface_ipv4addr} in
538 # assign IPv6 addr and interface route for 6to4 interface
539 stf_prefixlen=$((16+${stf_interface_ipv4plen:-0}))
542 set ${stf_interface_ipv4addr}
544 hexfrag1=`hexprint $(($1*256 + $2))`
545 hexfrag2=`hexprint $(($3*256 + $4))`
546 ipv4_in_hexformat="${hexfrag1}:${hexfrag2}"
547 case ${stf_interface_ipv6_ifid} in
548 [Aa][Uu][Tt][Oo] | '')
549 for i in ${ipv6_network_interfaces}; do
550 laddr=`network6_getladdr ${i}`
559 stf_interface_ipv6_ifid=`expr "${laddr}" : \
560 'fe80::\(.*\)%\(.*\)'`
561 case ${stf_interface_ipv6_ifid} in
563 stf_interface_ipv6_ifid=0:0:0:1
568 ifconfig stf0 create >/dev/null 2>&1
569 ifconfig stf0 inet6 2002:${ipv4_in_hexformat}:${stf_interface_ipv6_slaid:-0}:${stf_interface_ipv6_ifid} \
570 prefixlen ${stf_prefixlen}
571 # disallow packets to malicious 6to4 prefix
572 route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject
573 route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject
574 route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject
575 route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject
580 # Setup static routes
581 network6_static_routes_setup()
583 # Set up any static routes.
584 case ${ipv6_defaultrouter} in
588 ipv6_static_routes="default ${ipv6_static_routes}"
589 ipv6_route_default="default ${ipv6_defaultrouter}"
592 case ${ipv6_static_routes} in
596 for i in ${ipv6_static_routes}; do
597 eval ipv6_route_args=\$ipv6_route_${i}
598 route add -inet6 ${ipv6_route_args}
605 network6_faith_setup()
607 case ${ipv6_faith_prefix} in
611 sysctl net.inet6.ip6.keepfaith=1
612 ifconfig faith0 create >/dev/null 2>&1
614 for prefix in ${ipv6_faith_prefix}; do
615 prefixlen=`expr "${prefix}" : ".*/\(.*\)"`
621 prefix=`expr "${prefix}" : \
622 "\(.*\)/${prefixlen}"`
625 route add -inet6 ${prefix} -prefixlen ${prefixlen} ::1
626 route change -inet6 ${prefix} -prefixlen ${prefixlen} \
633 # Install the "default interface" to kernel, which will be used
634 # as the default route when there's no router.
635 network6_default_interface_setup()
637 # Choose IPv6 default interface if it is not clearly specified.
638 case ${ipv6_default_interface} in
640 for i in ${ipv6_network_interfaces}; do
646 laddr=`network6_getladdr $i exclude_tentative`
651 ipv6_default_interface=$i
659 # Disallow unicast packets without outgoing scope identifiers,
660 # or route such packets to a "default" interface, if it is specified.
661 route add -inet6 fe80:: -prefixlen 10 ::1 -reject
662 case ${ipv6_default_interface} in
664 route add -inet6 ff02:: -prefixlen 16 ::1 -reject
667 laddr=`network6_getladdr ${ipv6_default_interface}`
668 route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \
671 # Disable installing the default interface with the
672 # case net.inet6.ip6.forwarding=0 and
673 # net.inet6.ip6.accept_rtadv=0, due to avoid conflict
674 # between the default router list and the manual
675 # configured default route.
676 case ${ipv6_gateway_enable} in
680 if [ `sysctl -n net.inet6.ip6.accept_rtadv` -eq 1 ]
682 ndp -I ${ipv6_default_interface}
692 ifconfig $1 2>/dev/null | while read proto addr rest; do