etc/network.subr

   1 #
   2 # Copyright (c) 2003 The FreeBSD Project. All rights reserved.
   3 #
   4 # Redistribution and use in source and binary forms, with or without
   5 # modification, are permitted provided that the following conditions
   6 # are met:
   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.
  12 #
  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
  23 # SUCH DAMAGE.
  24 #
  25 # $FreeBSD$
  26 #
  27
  28 #
  29 # Subroutines commonly used from network startup scripts.
  30 # Requires that rc.conf be loaded first.
  31 #
  32
  33 # ifn_start ifn
  34 # Bring up and configure an interface.  If some configuration is applied
  35 # print the interface configuration.
  36 #
  37 ifn_start()
  38 {
  39         local ifn cfg
  40         ifn="$1"
  41         cfg=1
  42
  43         [ -z "$ifn" ] && err 1 "ifn_start called without an interface"
  44
  45         ifscript_up ${ifn} && cfg=0
  46         ifconfig_up ${ifn} && cfg=0
  47         ipv4_up ${ifn} && cfg=0
  48         ipx_up ${ifn} && cfg=0
  49         childif_create ${ifn}
  50
  51         if [ "$cfg" -eq 0 ]; then
  52                 ifconfig ${ifn}
  53         fi
  54
  55         return $cfg
  56 }
  57
  58 # ifn_start ifn
  59 # Shutdown and de-configure an interface.  If action is taken print the
  60 # interface name.
  61 #
  62 ifn_stop()
  63 {
  64         local ifn cfg
  65         ifn="$1"
  66         cfg=1
  67
  68         [ -z "$ifn" ] && return 1
  69
  70         ipx_down ${ifn} && cfg=0
  71         ipv4_down ${ifn} && cfg=0
  72         ifconfig_down ${ifn} && cfg=0
  73         ifscript_down ${ifn} && cfg=0
  74         childif_destroy
  75
  76         if [ "$cfg" -eq 0 ]; then
  77                 echo -n " ${ifn}"
  78         fi
  79
  80         return $cfg
  81 }
  82
  83 # ifconfig_up if
  84 #       Evaluate ifconfig(8) arguments for interface $if and
  85 #       run ifconfig(8) with those arguments. It returns 0 if
  86 #       arguments were found and executed or 1 if the interface
  87 #       had no arguments.  Pseudo arguments DHCP and WPA are handled
  88 #       here.
  89 #
  90 ifconfig_up()
  91 {
  92         _cfg=1
  93
  94         ifconfig_args=`ifconfig_getargs $1`
  95         if [ -n "${ifconfig_args}" ]; then
  96                 ifconfig $1 ${ifconfig_args}
  97                 ifconfig $1 up
  98                 _cfg=0
  99         fi
 100
 101         if wpaif $1; then
 102                 /etc/rc.d/wpa_supplicant start $1
 103                 _cfg=0          # XXX: not sure this should count
 104         fi
 105
 106         if dhcpif $1; then
 107                 if [ $_cfg -ne 0 ] ; then
 108                         ifconfig $1 up
 109                 fi
 110                 if syncdhcpif $1; then
 111                         /etc/rc.d/dhclient start $1
 112                 fi
 113                 _cfg=0
 114         fi
 115
 116         return $_cfg
 117 }
 118
 119 # ifconfig_down if
 120 #       returns 1 if wpa_supplicant or dhclient was stopped or
 121 #       the interface exists.
 122 #
 123 ifconfig_down()
 124 {
 125         [ -z "$1" ] && return 1
 126         _cfg=1
 127
 128         if wpaif $1; then
 129                 /etc/rc.d/wpa_supplicant stop $1
 130                 _cfg=0
 131         fi
 132
 133         if dhcpif $1; then
 134                 /etc/rc.d/dhclient stop $1
 135                 _cfg=0
 136         fi
 137
 138         if ifexists $1; then
 139                 ifconfig $1 down
 140                 _cfg=0
 141         fi
 142
 143         return $_cfg
 144 }
 145
 146 # get_if_var if var [default]
 147 #       Return the value of the pseudo-hash corresponding to $if where
 148 #       $var is a string containg the sub-string "IF" which will be
 149 #       replaced with $if after the characters defined in _punct are
 150 #       replaced with '_'. If the variable is unset, replace it with
 151 #       $default if given.
 152 get_if_var()
 153 {
 154         if [ $# -ne 2 -a $# -ne 3 ]; then
 155                 err 3 'USAGE: get_if_var name var [default]'
 156         fi
 157
 158         _if=$1
 159         _punct=". - / +"
 160         for _punct_c in $_punct; do
 161                 _if=`ltr ${_if} ${_punct_c} '_'`
 162         done
 163         _var=$2
 164         _default=$3
 165
 166         prefix=${_var%%IF*}
 167         suffix=${_var##*IF}
 168         eval echo \${${prefix}${_if}${suffix}-${_default}}
 169 }
 170
 171 # _ifconfig_getargs if
 172 #       Echos the arguments for the supplied interface to stdout.
 173 #       returns 1 if empty.  In general, ifconfig_getargs should be used
 174 #       outside this file.
 175 _ifconfig_getargs()
 176 {
 177         _ifn=$1
 178         if [ -z "$_ifn" ]; then
 179                 return 1
 180         fi
 181
 182         get_if_var $_ifn ifconfig_IF "$ifconfig_DEFAULT"
 183 }
 184
 185 # ifconfig_getargs if
 186 #       Takes the result from _ifconfig_getargs and removes pseudo
 187 #       args such as DHCP and WPA.
 188 ifconfig_getargs()
 189 {
 190         _tmpargs=`_ifconfig_getargs $1`
 191         if [ $? -eq 1 ]; then
 192                 return 1
 193         fi
 194         _args=
 195
 196         for _arg in $_tmpargs; do
 197                 case $_arg in
 198                 [Dd][Hh][Cc][Pp]) ;;
 199                 [Nn][Oo][Aa][Uu][Tt][Oo]) ;;
 200                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
 201                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
 202                 [Ww][Pp][Aa]) ;;
 203                 *)
 204                         _args="$_args $_arg"
 205                         ;;
 206                 esac
 207         done
 208
 209         echo $_args
 210 }
 211
 212 # autoif
 213 #       Returns 0 if the interface should be automaticly configured at
 214 #       boot time and 1 otherwise.
 215 autoif()
 216 {
 217         _tmpargs=`_ifconfig_getargs $1`
 218         for _arg in $_tmpargs; do
 219                 case $_arg in
 220                 [Nn][Oo][Aa][Uu][Tt][Oo])
 221                         return 1
 222                         ;;
 223                 esac
 224         done
 225         return 0
 226 }
 227
 228 # dhcpif if
 229 #       Returns 0 if the interface is a DHCP interface and 1 otherwise.
 230 dhcpif()
 231 {
 232         _tmpargs=`_ifconfig_getargs $1`
 233         for _arg in $_tmpargs; do
 234                 case $_arg in
 235                 [Dd][Hh][Cc][Pp])
 236                         return 0
 237                         ;;
 238                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 239                         return 0
 240                         ;;
 241                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 242                         return 0
 243                         ;;
 244                 esac
 245         done
 246         return 1
 247 }
 248
 249 # syncdhcpif
 250 #       Returns 0 if the interface should be configured synchronously and
 251 #       1 otherwise.
 252 syncdhcpif()
 253 {
 254         _tmpargs=`_ifconfig_getargs $1`
 255         for _arg in $_tmpargs; do
 256                 case $_arg in
 257                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 258                         return 1
 259                         ;;
 260                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 261                         return 0
 262                         ;;
 263                 esac
 264         done
 265         if checkyesno synchronous_dhclient; then
 266                 return 0
 267         else
 268                 return 1
 269         fi
 270 }
 271
 272 # wpaif if
 273 #       Returns 0 if the interface is a WPA interface and 1 otherwise.
 274 wpaif()
 275 {
 276         _tmpargs=`_ifconfig_getargs $1`
 277         for _arg in $_tmpargs; do
 278                 case $_arg in
 279                 [Ww][Pp][Aa])
 280                         return 0
 281                         ;;
 282                 esac
 283         done
 284         return 1
 285 }
 286
 287 # ipv6if if
 288 #       Returns 0 if the interface should be configured for IPv6 and
 289 #       1 otherwise.
 290 ipv6if()
 291 {
 292         if ! checkyesno ipv6_enable; then
 293                 return 1
 294         fi
 295         case "${ipv6_network_interfaces}" in
 296         [Aa][Uu][Tt][Oo])
 297                 return 0
 298                 ;;
 299         ''|[Nn][Oo][Nn][Ee])
 300                 return 1
 301                 ;;
 302         esac
 303         for v6if in ${ipv6_network_interfaces}; do
 304                 if [ "${v6if}" = "${1}" ]; then
 305                         return 0
 306                 fi
 307         done
 308         return 1
 309 }
 310
 311 # ifexists if
 312 #       Returns 0 if the interface exists and 1 otherwise.
 313 ifexists()
 314 {
 315         ifconfig -n $1 > /dev/null 2>&1
 316 }
 317
 318 # ipv4_up if
 319 #  add IPv4 addresses to the interface $if
 320 ipv4_up()
 321 {
 322         _if=$1
 323         ifalias_up ${_if}
 324         ipv4_addrs_common ${_if} alias
 325 }
 326
 327 # ipv4_down if
 328 #  remove IPv4 addresses from the interface $if
 329 ipv4_down()
 330 {
 331         _if=$1
 332         _ifs="^"
 333         _ret=1
 334
 335         ifexists ${_if} || return 1
 336
 337         inetList="`ifconfig ${_if} | grep 'inet ' | tr "\n" "$_ifs"`"
 338
 339         oldifs="$IFS"
 340         IFS="$_ifs"
 341         for _inet in $inetList ; do
 342                 # get rid of extraneous line
 343                 [ -z "$_inet" ] && break
 344
 345                 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'`
 346
 347                 IFS="$oldifs"
 348                 ifconfig ${_if} ${_inet} delete
 349                 IFS="$_ifs"
 350                 _ret=0
 351         done
 352         IFS="$oldifs"
 353
 354         ifalias_down ${_if} && _ret=0
 355         ipv4_addrs_common ${_if} -alias && _ret=0
 356
 357         return $_ret
 358 }
 359
 360 # ipv4_addrs_common if action
 361 #   Evaluate the ifconfig_if_ipv4 arguments for interface $if
 362 #   and use $action to add or remove IPv4 addresses from $if.
 363 ipv4_addrs_common()
 364 {
 365         _ret=1
 366         _if=$1
 367         _action=$2
 368
 369         # get ipv4-addresses
 370         cidr_addr=`get_if_var $_if ipv4_addrs_IF`
 371
 372         for _cidr in ${cidr_addr}; do
 373                 _ipaddr=${_cidr%%/*}
 374                 _netmask="/"${_cidr##*/}
 375                 _range=${_ipaddr##*.}
 376                 _ipnet=${_ipaddr%.*}
 377                 _iplow=${_range%-*}
 378                 _iphigh=${_range#*-}
 379
 380                 # clear netmask when removing aliases
 381                 if [ "${_action}" = "-alias" ]; then
 382                         _netmask=""
 383                 fi
 384
 385                 _ipcount=${_iplow}
 386                 while [ "${_ipcount}" -le "${_iphigh}" ]; do
 387                         eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}"
 388                         _ipcount=$((${_ipcount}+1))
 389                         _ret=0
 390
 391                         # only the first ipaddr in a subnet need the real netmask
 392                         if [ "${_action}" != "-alias" ]; then
 393                                 _netmask="/32"
 394                         fi
 395                 done
 396         done
 397         return $_ret
 398 }
 399
 400 # ifalias_up if
 401 #       Configure aliases for network interface $if.
 402 #       It returns 0 if at least one alias was configured or
 403 #       1 if there were none.
 404 #
 405 ifalias_up()
 406 {
 407         _ret=1
 408         alias=0
 409         while : ; do
 410                 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
 411                 if [ -n "${ifconfig_args}" ]; then
 412                         ifconfig $1 ${ifconfig_args} alias
 413                         alias=$((${alias} + 1))
 414                         _ret=0
 415                 else
 416                         break
 417                 fi
 418         done
 419         return $_ret
 420 }
 421
 422 #ifalias_down if
 423 #       Remove aliases for network interface $if.
 424 #       It returns 0 if at least one alias was removed or
 425 #       1 if there were none.
 426 #
 427 ifalias_down()
 428 {
 429         _ret=1
 430         alias=0
 431         while : ; do
 432                 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
 433                 if [ -n "${ifconfig_args}" ]; then
 434                         ifconfig $1 ${ifconfig_args} -alias
 435                         alias=$((${alias} + 1))
 436                         _ret=0
 437                 else
 438                         break
 439                 fi
 440         done
 441         return $_ret
 442 }
 443
 444 # ifscript_up if
 445 #       Evaluate a startup script for the $if interface.
 446 #       It returns 0 if a script was found and processed or
 447 #       1 if no script was found.
 448 #
 449 ifscript_up()
 450 {
 451         if [ -r /etc/start_if.$1 ]; then
 452                 . /etc/start_if.$1
 453                 return 0
 454         fi
 455         return 1
 456 }
 457
 458 # ifscript_down if
 459 #       Evaluate a shutdown script for the $if interface.
 460 #       It returns 0 if a script was found and processed or
 461 #       1 if no script was found.
 462 #
 463 ifscript_down()
 464 {
 465         if [ -r /etc/stop_if.$1 ]; then
 466                 . /etc/stop_if.$1
 467                 return 0
 468         fi
 469         return 1
 470 }
 471
 472 # Create cloneable interfaces.
 473 #
 474 clone_up()
 475 {
 476         _prefix=
 477         _list=
 478         for ifn in ${cloned_interfaces}; do
 479                 ifconfig ${ifn} create `get_if_var ${ifn} create_args_IF`
 480                 if [ $? -eq 0 ]; then
 481                         _list="${_list}${_prefix}${ifn}"
 482                         [ -z "$_prefix" ] && _prefix=' '
 483                 fi
 484         done
 485         debug "Cloned: ${_list}"
 486 }
 487
 488 # Destroy cloned interfaces. Destroyed interfaces are echoed
 489 # to standard output.
 490 #
 491 clone_down()
 492 {
 493         _prefix=
 494         _list=
 495         for ifn in ${cloned_interfaces}; do
 496                 ifconfig ${ifn} destroy
 497                 if [ $? -eq 0 ]; then
 498                         _list="${_list}${_prefix}${ifn}"
 499                         [ -z "$_prefix" ] && _prefix=' '
 500                 fi
 501         done
 502         debug "Destroyed clones: ${_list}"
 503 }
 504
 505 # Create and configure child interfaces.
 506 # Return 0 if child interfaces are created.
 507 #
 508 childif_create()
 509 {
 510         local cfg child child_wlans create_args ifn i
 511         cfg=1
 512
 513         ifn=$1
 514
 515         # Create wireless interfaces
 516         child_wlans=`get_if_var $ifn wlans_IF`
 517         if [ -z "${child_wlans}" ]; then
 518                 child_wlans=`get_if_var $ifn vaps_IF`
 519                 if [ -n "${child_wlans}" ]; then
 520                         warn "soon to be deleted vaps_$ifn variable defined use wlans_$ifn"
 521                 fi
 522         fi
 523
 524         for child in ${child_wlans}; do
 525                 create_args="wlandev $ifn `get_if_var $child create_args_IF` `get_if_var $child vap_create_IF`"
 526                 if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then
 527                         ifconfig $child create ${create_args} && cfg=0
 528                 else
 529                         i=`ifconfig wlan create ${create_args}`
 530                         ifconfig $i name $child && cfg=0
 531                 fi
 532                 ifn_start $child
 533         done
 534
 535         return ${cfg}
 536 }
 537
 538 # Destroy child interfaces.
 539 #
 540 childif_destroy()
 541 {
 542         local cfg child child_wlans ifn
 543
 544         child_wlans="`get_if_var $ifn wlans_IF` `get_if_var $ifn vaps_IF`"
 545         for child in ${child_wlans}; do
 546                 ifconfig $child destroy && cfg=0
 547         done
 548 }
 549
 550 # Create netgraph nodes.
 551 #
 552 ng_mkpeer() {
 553         ngctl -f - 2> /dev/null <<EOF
 554 mkpeer $*
 555 msg dummy nodeinfo
 556 EOF
 557 }
 558
 559 ng_create_one() {
 560         ng_mkpeer $* | while read line; do
 561                 t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'`
 562                 if [ -n "${t}" ]; then
 563                         echo ${t}
 564                         return
 565                 fi
 566         done
 567 }
 568
 569 gif_up() {
 570         for i in ${gif_interfaces}; do
 571                 peers=`get_if_var $i gifconfig_IF`
 572                 case ${peers} in
 573                 '')
 574                         continue
 575                         ;;
 576                 *)
 577                         if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then
 578                                 ifconfig $i create >/dev/null 2>&1
 579                         else
 580                                 gif=`ifconfig gif create`
 581                                 ifconfig $gif name $i
 582                         fi
 583                         ifconfig $i tunnel ${peers}
 584                         ifconfig $i up
 585                         ;;
 586                 esac
 587         done
 588 }
 589
 590 # ng_fec_create ifn
 591 # Configure Fast EtherChannel for interface $ifn. Returns 0 if FEC
 592 # arguments were found and configured; returns !0 otherwise.
 593 ng_fec_create() {
 594          local req_iface iface bogus
 595          req_iface="$1"
 596
 597          ngctl shutdown ${req_iface}: > /dev/null 2>&1
 598
 599          bogus=""
 600          while true; do
 601                  iface=`ng_create_one fec dummy fec`
 602                  if [ -z "${iface}" ]; then
 603                          exit 2
 604                  fi
 605                  if [ "${iface}" = "${req_iface}" ]; then
 606                          break
 607                  fi
 608                  bogus="${bogus} ${iface}"
 609          done
 610
 611          for iface in ${bogus}; do
 612                  ngctl shutdown ${iface}:
 613          done
 614 }
 615
 616 fec_up() {
 617         for i in ${fec_interfaces}; do
 618                 ng_fec_create $i
 619                 for j in `get_if_var $i fecconfig_IF`; do
 620                         case ${j} in
 621                         '')
 622                                 continue
 623                                 ;;
 624                         *)
 625                                 ngctl msg ${i}: add_iface "\"${j}\""
 626                                 ;;
 627                         esac
 628                 done
 629         done
 630 }
 631
 632 #
 633 # ipx_up ifn
 634 # Configure any IPX addresses for interface $ifn. Returns 0 if IPX
 635 # arguments were found and configured; returns 1 otherwise.
 636 #
 637 ipx_up()
 638 {
 639         ifn="$1"
 640         ifconfig_args=`get_if_var $ifn ifconfig_IF_ipx`
 641         if [ -n "${ifconfig_args}" ]; then
 642                 ifconfig ${ifn} ${ifconfig_args}
 643                 return 0
 644         fi
 645         return 1
 646 }
 647
 648 # ipx_down ifn
 649 #       Remove IPX addresses for interface $ifn. Returns 0 if IPX
 650 #       addresses were found and unconfigured. It returns 1, otherwise.
 651 #
 652 ipx_down()
 653 {
 654         [ -z "$1" ] && return 1
 655         _ifs="^"
 656         _ret=1
 657
 658         ifexists $1 || return 1
 659
 660         ipxList="`ifconfig $1 | grep 'ipx ' | tr "\n" "$_ifs"`"
 661
 662         oldifs="$IFS"
 663         IFS="$_ifs"
 664         for _ipx in $ipxList ; do
 665                 # get rid of extraneous line
 666                 [ -z "$_ipx" ] && break
 667
 668                 _ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'`
 669
 670                 IFS="$oldifs"
 671                 ifconfig $1 ${_ipx} delete
 672                 IFS="$_ifs"
 673                 _ret=0
 674         done
 675         IFS="$oldifs"
 676
 677         return $_ret
 678 }
 679
 680 # ifnet_rename
 681 #       Rename all requested interfaces.
 682 #
 683 ifnet_rename()
 684 {
 685
 686         _ifn_list="`ifconfig -l`"
 687         [ -z "$_ifn_list" ] && return 0
 688         for _if in ${_ifn_list} ; do
 689                 _ifname=`get_if_var $_if ifconfig_IF_name`
 690                 if [ ! -z "$_ifname" ]; then
 691                         ifconfig $_if name $_ifname
 692                 fi
 693         done
 694         return 0
 695 }
 696
 697 #
 698 # list_net_interfaces type
 699 #       List all network interfaces. The type of interface returned
 700 #       can be controlled by the type argument. The type
 701 #       argument can be any of the following:
 702 #               nodhcp - all interfaces, excluding DHCP configured interfaces
 703 #               dhcp   - list only DHCP configured interfaces
 704 #       If no argument is specified all network interfaces are output.
 705 #       Note that the list will include cloned interfaces if applicable.
 706 #       Cloned interfaces must already exist to have a chance to appear
 707 #       in the list if ${network_interfaces} is set to `auto'.
 708 #
 709 list_net_interfaces()
 710 {
 711         type=$1
 712
 713         # Get a list of ALL the interfaces and make lo0 first if it's there.
 714         #
 715         case ${network_interfaces} in
 716         [Aa][Uu][Tt][Oo])
 717                 _prefix=''
 718                 _autolist="`ifconfig -l`"
 719                 _lo=
 720                 for _if in ${_autolist} ; do
 721                         if autoif $_if; then
 722                                 if [ "$_if" = "lo0" ]; then
 723                                         _lo="lo0 "
 724                                 else
 725                                         _tmplist="${_tmplist}${_prefix}${_if}"
 726                                         [ -z "$_prefix" ] && _prefix=' '
 727                                 fi
 728                         fi
 729                 done
 730                 _tmplist="${_lo}${_tmplist}"
 731                 ;;
 732         *)
 733                 if [ -z "$type"]; then
 734                         warn "Values of network_interfaces other than" \
 735                             "AUTO are deprecated"
 736                 fi
 737                 _tmplist="${network_interfaces} ${cloned_interfaces}"
 738                 ;;
 739         esac
 740
 741         if [ -z "$type" ]; then
 742                 echo $_tmplist
 743                 return 0
 744         fi
 745
 746         # Separate out dhcp and non-dhcp interfaces
 747         #
 748         _aprefix=
 749         _bprefix=
 750         for _if in ${_tmplist} ; do
 751                 if dhcpif $_if; then
 752                         _dhcplist="${_dhcplist}${_aprefix}${_if}"
 753                         [ -z "$_aprefix" ] && _aprefix=' '
 754                 elif [ -n "`_ifconfig_getargs $_if`" ]; then
 755                         _nodhcplist="${_nodhcplist}${_bprefix}${_if}"
 756                         [ -z "$_bprefix" ] && _bprefix=' '
 757                 fi
 758         done
 759
 760         case "$type" in
 761         nodhcp)
 762                 echo $_nodhcplist
 763                 ;;
 764         dhcp)
 765                 echo $_dhcplist
 766                 ;;
 767         esac
 768         return 0
 769 }
 770
 771 hexdigit()
 772 {
 773         if [ $1 -lt 10 ]; then
 774                 echo $1
 775         else
 776                 case $1 in
 777                 10)     echo a ;;
 778                 11)     echo b ;;
 779                 12)     echo c ;;
 780                 13)     echo d ;;
 781                 14)     echo e ;;
 782                 15)     echo f ;;
 783                 esac
 784         fi
 785 }
 786
 787 hexprint()
 788 {
 789         val=$1
 790         str=''
 791
 792         dig=`hexdigit $((${val} & 15))`
 793         str=${dig}${str}
 794         val=$((${val} >> 4))
 795         while [ ${val} -gt 0 ]; do
 796                 dig=`hexdigit $((${val} & 15))`
 797                 str=${dig}${str}
 798                 val=$((${val} >> 4))
 799         done
 800
 801         echo ${str}
 802 }
 803
 804 # Setup the interfaces for IPv6
 805 network6_interface_setup()
 806 {
 807         interfaces=$*
 808         rtsol_interfaces=''
 809         case ${ipv6_gateway_enable} in
 810         [Yy][Ee][Ss])
 811                 rtsol_available=no
 812                 ;;
 813         *)
 814                 rtsol_available=yes
 815                 ;;
 816         esac
 817         for i in $interfaces; do
 818                 rtsol_interface=yes
 819                 prefix=`get_if_var $i ipv6_prefix_IF`
 820                 if [ -n "${prefix}" ]; then
 821                         rtsol_available=no
 822                         rtsol_interface=no
 823                         laddr=`network6_getladdr $i`
 824                         hostid=`expr "${laddr}" : 'fe80::\(.*\)%\(.*\)'`
 825                         for j in ${prefix}; do
 826                                 address=$j\:${hostid}
 827                                 ifconfig $i inet6 ${address} prefixlen 64 alias
 828
 829                                 case ${ipv6_gateway_enable} in
 830                                 [Yy][Ee][Ss])
 831                                         # subnet-router anycast address
 832                                         # (rfc2373)
 833                                         ifconfig $i inet6 $j:: prefixlen 64 \
 834                                                 alias anycast
 835                                         ;;
 836                                 esac
 837                         done
 838                 fi
 839                 ipv6_ifconfig=`get_if_var $i ipv6_ifconfig_IF`
 840                 if [ -n "${ipv6_ifconfig}" ]; then
 841                         rtsol_available=no
 842                         rtsol_interface=no
 843                         ifconfig $i inet6 ${ipv6_ifconfig} alias
 844                 fi
 845
 846                 if [ ${rtsol_available} = yes -a ${rtsol_interface} = yes ]
 847                 then
 848                         case ${i} in
 849                         lo0|gif[0-9]*|stf[0-9]*|faith[0-9]*|lp[0-9]*|sl[0-9]*|tun[0-9]*|pflog[0-9]*|pfsync[0-9]*)
 850                                 ;;
 851                         *)
 852                                 rtsol_interfaces="${rtsol_interfaces} ${i}"
 853                                 ;;
 854                         esac
 855                 else
 856                         ifconfig $i inet6
 857                 fi
 858         done
 859
 860         if [ ${rtsol_available} = yes -a -n "${rtsol_interfaces}" ]; then
 861                 # Act as endhost - automatically configured.
 862                 # You can configure only single interface, as
 863                 # specification assumes that autoconfigured host has
 864                 # single interface only.
 865                 sysctl net.inet6.ip6.accept_rtadv=1
 866                 set ${rtsol_interfaces}
 867                 ifconfig $1 up
 868                 rtsol ${rtsol_flags} $1
 869         fi
 870
 871         for i in $interfaces; do
 872                 alias=0
 873                 while : ; do
 874                         ipv6_ifconfig=`get_if_var $i ipv6_ifconfig_IF_alias${alias}`
 875                         if [ -z "${ipv6_ifconfig}" ]; then
 876                                 break;
 877                         fi
 878                         ifconfig $i inet6 ${ipv6_ifconfig} alias
 879                         alias=$((${alias} + 1))
 880                 done
 881         done
 882 }
 883
 884 # Setup IPv6 to IPv4 mapping
 885 network6_stf_setup()
 886 {
 887         case ${stf_interface_ipv4addr} in
 888         [Nn][Oo] | '')
 889                 ;;
 890         *)
 891                 # assign IPv6 addr and interface route for 6to4 interface
 892                 stf_prefixlen=$((16+${stf_interface_ipv4plen:-0}))
 893                 OIFS="$IFS"
 894                 IFS=".$IFS"
 895                 set ${stf_interface_ipv4addr}
 896                 IFS="$OIFS"
 897                 hexfrag1=`hexprint $(($1*256 + $2))`
 898                 hexfrag2=`hexprint $(($3*256 + $4))`
 899                 ipv4_in_hexformat="${hexfrag1}:${hexfrag2}"
 900                 case ${stf_interface_ipv6_ifid} in
 901                 [Aa][Uu][Tt][Oo] | '')
 902                         for i in ${ipv6_network_interfaces}; do
 903                                 laddr=`network6_getladdr ${i}`
 904                                 case ${laddr} in
 905                                 '')
 906                                         ;;
 907                                 *)
 908                                         break
 909                                         ;;
 910                                 esac
 911                         done
 912                         stf_interface_ipv6_ifid=`expr "${laddr}" : \
 913                                                       'fe80::\(.*\)%\(.*\)'`
 914                         case ${stf_interface_ipv6_ifid} in
 915                         '')
 916                                 stf_interface_ipv6_ifid=0:0:0:1
 917                                 ;;
 918                         esac
 919                         ;;
 920                 esac
 921                 ifconfig stf0 create >/dev/null 2>&1
 922                 ifconfig stf0 inet6 2002:${ipv4_in_hexformat}:${stf_interface_ipv6_slaid:-0}:${stf_interface_ipv6_ifid} \
 923                         prefixlen ${stf_prefixlen}
 924                 # disallow packets to malicious 6to4 prefix
 925                 route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject
 926                 route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject
 927                 route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject
 928                 route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject
 929                 ;;
 930         esac
 931 }
 932
 933 # Setup static routes
 934 network6_static_routes_setup()
 935 {
 936         # Set up any static routes.
 937         case ${ipv6_defaultrouter} in
 938         [Nn][Oo] | '')
 939                 ;;
 940         *)
 941                 ipv6_static_routes="default ${ipv6_static_routes}"
 942                 ipv6_route_default="default ${ipv6_defaultrouter}"
 943                 ;;
 944         esac
 945         case ${ipv6_static_routes} in
 946         [Nn][Oo] | '')
 947                 ;;
 948         *)
 949                 for i in ${ipv6_static_routes}; do
 950                         ipv6_route_args=`get_if_var $i ipv6_route_IF`
 951                         route add -inet6 ${ipv6_route_args}
 952                 done
 953                 ;;
 954         esac
 955 }
 956
 957 # Setup faith
 958 network6_faith_setup()
 959 {
 960         case ${ipv6_faith_prefix} in
 961         [Nn][Oo] | '')
 962                 ;;
 963         *)
 964                 sysctl net.inet6.ip6.keepfaith=1
 965                 ifconfig faith0 create >/dev/null 2>&1
 966                 ifconfig faith0 up
 967                 for prefix in ${ipv6_faith_prefix}; do
 968                         prefixlen=`expr "${prefix}" : ".*/\(.*\)"`
 969                         case ${prefixlen} in
 970                         '')
 971                                 prefixlen=96
 972                                 ;;
 973                         *)
 974                                 prefix=`expr "${prefix}" : \
 975                                              "\(.*\)/${prefixlen}"`
 976                                 ;;
 977                         esac
 978                         route add -inet6 ${prefix} -prefixlen ${prefixlen} ::1
 979                         route change -inet6 ${prefix} -prefixlen ${prefixlen} \
 980                                 -ifp faith0
 981                 done
 982                 ;;
 983         esac
 984 }
 985
 986 # Install the "default interface" to kernel, which will be used
 987 # as the default route when there's no router.
 988 network6_default_interface_setup()
 989 {
 990         # Choose IPv6 default interface if it is not clearly specified.
 991         case ${ipv6_default_interface} in
 992         '')
 993                 for i in ${ipv6_network_interfaces}; do
 994                         case $i in
 995                         lo0|faith[0-9]*)
 996                                 continue
 997                                 ;;
 998                         esac
 999                         laddr=`network6_getladdr $i exclude_tentative`
1000                         case ${laddr} in
1001                         '')
1002                                 ;;
1003                         *)
1004                                 ipv6_default_interface=$i
1005                                 break
1006                                 ;;
1007                         esac
1008                 done
1009                 ;;
1010         esac
1011
1012         # Disallow unicast packets without outgoing scope identifiers,
1013         # or route such packets to a "default" interface, if it is specified.
1014         route add -inet6 fe80:: -prefixlen 10 ::1 -reject
1015         case ${ipv6_default_interface} in
1016         [Nn][Oo] | '')
1017                 route add -inet6 ff02:: -prefixlen 16 ::1 -reject
1018                 ;;
1019         *)
1020                 laddr=`network6_getladdr ${ipv6_default_interface}`
1021                 route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \
1022                         -cloning
1023
1024                 # Disable installing the default interface with the
1025                 # case net.inet6.ip6.forwarding=0 and
1026                 # net.inet6.ip6.accept_rtadv=0, due to avoid conflict
1027                 # between the default router list and the manual
1028                 # configured default route.
1029                 case ${ipv6_gateway_enable} in
1030                 [Yy][Ee][Ss])
1031                         ;;
1032                 *)
1033                         if [ `sysctl -n net.inet6.ip6.accept_rtadv` -eq 1 ]
1034                         then
1035                                 ndp -I ${ipv6_default_interface}
1036                         fi
1037                         ;;
1038                 esac
1039                 ;;
1040         esac
1041 }
1042
1043 network6_getladdr()
1044 {
1045         ifconfig $1 2>/dev/null | while read proto addr rest; do
1046                 case ${proto} in
1047                 inet6)
1048                         case ${addr} in
1049                         fe80::*)
1050                                 if [ -z "$2" ]; then
1051                                         echo ${addr}
1052                                         return
1053                                 fi
1054                                 case ${rest} in
1055                                 *tentative*)
1056                                         continue
1057                                         ;;
1058                                 *)
1059                                         echo ${addr}
1060                                         return
1061                                 esac
1062                         esac
1063                 esac
1064         done
1065 }