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         return $cfg
  52 }
  53
  54 # ifn_start ifn
  55 # Shutdown and de-configure an interface.  If action is taken print the
  56 # interface name.
  57 #
  58 ifn_stop()
  59 {
  60         local ifn cfg
  61         ifn="$1"
  62         cfg=1
  63
  64         [ -z "$ifn" ] && return 1
  65
  66         ipx_down ${ifn} && cfg=0
  67         ipv4_down ${ifn} && cfg=0
  68         ifconfig_down ${ifn} && cfg=0
  69         ifscript_down ${ifn} && cfg=0
  70         childif_destroy ${ifn}
  71
  72         return $cfg
  73 }
  74
  75 # ifconfig_up if
  76 #       Evaluate ifconfig(8) arguments for interface $if and
  77 #       run ifconfig(8) with those arguments. It returns 0 if
  78 #       arguments were found and executed or 1 if the interface
  79 #       had no arguments.  Pseudo arguments DHCP and WPA are handled
  80 #       here.
  81 #
  82 ifconfig_up()
  83 {
  84         _cfg=1
  85
  86         ifconfig_args=`ifconfig_getargs $1`
  87         if [ -n "${ifconfig_args}" ]; then
  88                 ifconfig $1 ${ifconfig_args}
  89                 ifconfig $1 up
  90                 _cfg=0
  91         fi
  92
  93         if wpaif $1; then
  94                 /etc/rc.d/wpa_supplicant start $1
  95                 _cfg=0          # XXX: not sure this should count
  96         fi
  97
  98         if dhcpif $1; then
  99                 if [ $_cfg -ne 0 ] ; then
 100                         ifconfig $1 up
 101                 fi
 102                 if syncdhcpif $1; then
 103                         /etc/rc.d/dhclient start $1
 104                 fi
 105                 _cfg=0
 106         fi
 107
 108         return $_cfg
 109 }
 110
 111 # ifconfig_down if
 112 #       returns 1 if wpa_supplicant or dhclient was stopped or
 113 #       the interface exists.
 114 #
 115 ifconfig_down()
 116 {
 117         [ -z "$1" ] && return 1
 118         _cfg=1
 119
 120         if wpaif $1; then
 121                 /etc/rc.d/wpa_supplicant stop $1
 122                 _cfg=0
 123         fi
 124
 125         if dhcpif $1; then
 126                 /etc/rc.d/dhclient stop $1
 127                 _cfg=0
 128         fi
 129
 130         if ifexists $1; then
 131                 ifconfig $1 down
 132                 _cfg=0
 133         fi
 134
 135         return $_cfg
 136 }
 137
 138 # get_if_var if var [default]
 139 #       Return the value of the pseudo-hash corresponding to $if where
 140 #       $var is a string containg the sub-string "IF" which will be
 141 #       replaced with $if after the characters defined in _punct are
 142 #       replaced with '_'. If the variable is unset, replace it with
 143 #       $default if given.
 144 get_if_var()
 145 {
 146         if [ $# -ne 2 -a $# -ne 3 ]; then
 147                 err 3 'USAGE: get_if_var name var [default]'
 148         fi
 149
 150         _if=$1
 151         _punct=". - / +"
 152         for _punct_c in $_punct; do
 153                 _if=`ltr ${_if} ${_punct_c} '_'`
 154         done
 155         _var=$2
 156         _default=$3
 157
 158         prefix=${_var%%IF*}
 159         suffix=${_var##*IF}
 160         eval echo \${${prefix}${_if}${suffix}-${_default}}
 161 }
 162
 163 # _ifconfig_getargs if
 164 #       Echos the arguments for the supplied interface to stdout.
 165 #       returns 1 if empty.  In general, ifconfig_getargs should be used
 166 #       outside this file.
 167 _ifconfig_getargs()
 168 {
 169         _ifn=$1
 170         if [ -z "$_ifn" ]; then
 171                 return 1
 172         fi
 173
 174         get_if_var $_ifn ifconfig_IF "$ifconfig_DEFAULT"
 175 }
 176
 177 # ifconfig_getargs if
 178 #       Takes the result from _ifconfig_getargs and removes pseudo
 179 #       args such as DHCP and WPA.
 180 ifconfig_getargs()
 181 {
 182         _tmpargs=`_ifconfig_getargs $1`
 183         if [ $? -eq 1 ]; then
 184                 return 1
 185         fi
 186         _args=
 187
 188         for _arg in $_tmpargs; do
 189                 case $_arg in
 190                 [Dd][Hh][Cc][Pp]) ;;
 191                 [Nn][Oo][Aa][Uu][Tt][Oo]) ;;
 192                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
 193                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
 194                 [Ww][Pp][Aa]) ;;
 195                 *)
 196                         _args="$_args $_arg"
 197                         ;;
 198                 esac
 199         done
 200
 201         echo $_args
 202 }
 203
 204 # autoif
 205 #       Returns 0 if the interface should be automaticly configured at
 206 #       boot time and 1 otherwise.
 207 autoif()
 208 {
 209         _tmpargs=`_ifconfig_getargs $1`
 210         for _arg in $_tmpargs; do
 211                 case $_arg in
 212                 [Nn][Oo][Aa][Uu][Tt][Oo])
 213                         return 1
 214                         ;;
 215                 esac
 216         done
 217         return 0
 218 }
 219
 220 # dhcpif if
 221 #       Returns 0 if the interface is a DHCP interface and 1 otherwise.
 222 dhcpif()
 223 {
 224         _tmpargs=`_ifconfig_getargs $1`
 225         for _arg in $_tmpargs; do
 226                 case $_arg in
 227                 [Dd][Hh][Cc][Pp])
 228                         return 0
 229                         ;;
 230                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 231                         return 0
 232                         ;;
 233                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 234                         return 0
 235                         ;;
 236                 esac
 237         done
 238         return 1
 239 }
 240
 241 # syncdhcpif
 242 #       Returns 0 if the interface should be configured synchronously and
 243 #       1 otherwise.
 244 syncdhcpif()
 245 {
 246         _tmpargs=`_ifconfig_getargs $1`
 247         for _arg in $_tmpargs; do
 248                 case $_arg in
 249                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 250                         return 1
 251                         ;;
 252                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 253                         return 0
 254                         ;;
 255                 esac
 256         done
 257         if checkyesno synchronous_dhclient; then
 258                 return 0
 259         else
 260                 return 1
 261         fi
 262 }
 263
 264 # wpaif if
 265 #       Returns 0 if the interface is a WPA interface and 1 otherwise.
 266 wpaif()
 267 {
 268         _tmpargs=`_ifconfig_getargs $1`
 269         for _arg in $_tmpargs; do
 270                 case $_arg in
 271                 [Ww][Pp][Aa])
 272                         return 0
 273                         ;;
 274                 esac
 275         done
 276         return 1
 277 }
 278
 279 # ipv6if if
 280 #       Returns 0 if the interface should be configured for IPv6 and
 281 #       1 otherwise.
 282 ipv6if()
 283 {
 284         if ! checkyesno ipv6_enable; then
 285                 return 1
 286         fi
 287         case "${ipv6_network_interfaces}" in
 288         [Aa][Uu][Tt][Oo])
 289                 return 0
 290                 ;;
 291         ''|[Nn][Oo][Nn][Ee])
 292                 return 1
 293                 ;;
 294         esac
 295         for v6if in ${ipv6_network_interfaces}; do
 296                 if [ "${v6if}" = "${1}" ]; then
 297                         return 0
 298                 fi
 299         done
 300         return 1
 301 }
 302
 303 # ifexists if
 304 #       Returns 0 if the interface exists and 1 otherwise.
 305 ifexists()
 306 {
 307         ifconfig -n $1 > /dev/null 2>&1
 308 }
 309
 310 # ipv4_up if
 311 #  add IPv4 addresses to the interface $if
 312 ipv4_up()
 313 {
 314         _if=$1
 315         ifalias_up ${_if}
 316         ipv4_addrs_common ${_if} alias
 317 }
 318
 319 # ipv4_down if
 320 #  remove IPv4 addresses from the interface $if
 321 ipv4_down()
 322 {
 323         _if=$1
 324         _ifs="^"
 325         _ret=1
 326
 327         ifexists ${_if} || return 1
 328
 329         inetList="`ifconfig ${_if} | grep 'inet ' | tr "\n" "$_ifs"`"
 330
 331         oldifs="$IFS"
 332         IFS="$_ifs"
 333         for _inet in $inetList ; do
 334                 # get rid of extraneous line
 335                 [ -z "$_inet" ] && break
 336
 337                 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'`
 338
 339                 IFS="$oldifs"
 340                 ifconfig ${_if} ${_inet} delete
 341                 IFS="$_ifs"
 342                 _ret=0
 343         done
 344         IFS="$oldifs"
 345
 346         ifalias_down ${_if} && _ret=0
 347         ipv4_addrs_common ${_if} -alias && _ret=0
 348
 349         return $_ret
 350 }
 351
 352 # ipv4_addrs_common if action
 353 #   Evaluate the ifconfig_if_ipv4 arguments for interface $if
 354 #   and use $action to add or remove IPv4 addresses from $if.
 355 ipv4_addrs_common()
 356 {
 357         _ret=1
 358         _if=$1
 359         _action=$2
 360
 361         # get ipv4-addresses
 362         cidr_addr=`get_if_var $_if ipv4_addrs_IF`
 363
 364         for _cidr in ${cidr_addr}; do
 365                 _ipaddr=${_cidr%%/*}
 366                 _netmask="/"${_cidr##*/}
 367                 _range=${_ipaddr##*.}
 368                 _ipnet=${_ipaddr%.*}
 369                 _iplow=${_range%-*}
 370                 _iphigh=${_range#*-}
 371
 372                 # clear netmask when removing aliases
 373                 if [ "${_action}" = "-alias" ]; then
 374                         _netmask=""
 375                 fi
 376
 377                 _ipcount=${_iplow}
 378                 while [ "${_ipcount}" -le "${_iphigh}" ]; do
 379                         eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}"
 380                         _ipcount=$((${_ipcount}+1))
 381                         _ret=0
 382
 383                         # only the first ipaddr in a subnet need the real netmask
 384                         if [ "${_action}" != "-alias" ]; then
 385                                 _netmask="/32"
 386                         fi
 387                 done
 388         done
 389         return $_ret
 390 }
 391
 392 # ifalias_up if
 393 #       Configure aliases for network interface $if.
 394 #       It returns 0 if at least one alias was configured or
 395 #       1 if there were none.
 396 #
 397 ifalias_up()
 398 {
 399         _ret=1
 400         alias=0
 401         while : ; do
 402                 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
 403                 if [ -n "${ifconfig_args}" ]; then
 404                         ifconfig $1 ${ifconfig_args} alias
 405                         alias=$((${alias} + 1))
 406                         _ret=0
 407                 else
 408                         break
 409                 fi
 410         done
 411         return $_ret
 412 }
 413
 414 #ifalias_down if
 415 #       Remove aliases for network interface $if.
 416 #       It returns 0 if at least one alias was removed or
 417 #       1 if there were none.
 418 #
 419 ifalias_down()
 420 {
 421         _ret=1
 422         alias=0
 423         while : ; do
 424                 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
 425                 if [ -n "${ifconfig_args}" ]; then
 426                         ifconfig $1 ${ifconfig_args} -alias
 427                         alias=$((${alias} + 1))
 428                         _ret=0
 429                 else
 430                         break
 431                 fi
 432         done
 433         return $_ret
 434 }
 435
 436 # ifscript_up if
 437 #       Evaluate a startup script for the $if interface.
 438 #       It returns 0 if a script was found and processed or
 439 #       1 if no script was found.
 440 #
 441 ifscript_up()
 442 {
 443         if [ -r /etc/start_if.$1 ]; then
 444                 . /etc/start_if.$1
 445                 return 0
 446         fi
 447         return 1
 448 }
 449
 450 # ifscript_down if
 451 #       Evaluate a shutdown script for the $if interface.
 452 #       It returns 0 if a script was found and processed or
 453 #       1 if no script was found.
 454 #
 455 ifscript_down()
 456 {
 457         if [ -r /etc/stop_if.$1 ]; then
 458                 . /etc/stop_if.$1
 459                 return 0
 460         fi
 461         return 1
 462 }
 463
 464 # Create cloneable interfaces.
 465 #
 466 clone_up()
 467 {
 468         _prefix=
 469         _list=
 470         for ifn in ${cloned_interfaces}; do
 471                 ifconfig ${ifn} create `get_if_var ${ifn} create_args_IF`
 472                 if [ $? -eq 0 ]; then
 473                         _list="${_list}${_prefix}${ifn}"
 474                         [ -z "$_prefix" ] && _prefix=' '
 475                 fi
 476         done
 477         debug "Cloned: ${_list}"
 478 }
 479
 480 # Destroy cloned interfaces. Destroyed interfaces are echoed
 481 # to standard output.
 482 #
 483 clone_down()
 484 {
 485         _prefix=
 486         _list=
 487         for ifn in ${cloned_interfaces}; do
 488                 ifconfig ${ifn} destroy
 489                 if [ $? -eq 0 ]; then
 490                         _list="${_list}${_prefix}${ifn}"
 491                         [ -z "$_prefix" ] && _prefix=' '
 492                 fi
 493         done
 494         debug "Destroyed clones: ${_list}"
 495 }
 496
 497 # Create and configure child interfaces.
 498 # Return 0 if child interfaces are created.
 499 #
 500 childif_create()
 501 {
 502         local cfg child child_wlans create_args ifn i
 503         cfg=1
 504
 505         ifn=$1
 506
 507         # Create wireless interfaces
 508         child_wlans=`get_if_var $ifn wlans_IF`
 509         if [ -z "${child_wlans}" ]; then
 510                 child_wlans=`get_if_var $ifn vaps_IF`
 511                 if [ -n "${child_wlans}" ]; then
 512                         warn "soon to be deleted vaps_$ifn variable defined use wlans_$ifn"
 513                 fi
 514         fi
 515
 516         for child in ${child_wlans}; do
 517                 create_args="wlandev $ifn `get_if_var $child create_args_IF` `get_if_var $child vap_create_IF`"
 518                 if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then
 519                         ifconfig $child create ${create_args} && cfg=0
 520                 else
 521                         i=`ifconfig wlan create ${create_args}`
 522                         ifconfig $i name $child && cfg=0
 523                 fi
 524                 ifn_start $child
 525         done
 526
 527         return ${cfg}
 528 }
 529
 530 # Destroy child interfaces.
 531 #
 532 childif_destroy()
 533 {
 534         local cfg child child_wlans ifn
 535
 536         child_wlans="`get_if_var $ifn wlans_IF` `get_if_var $ifn vaps_IF`"
 537         for child in ${child_wlans}; do
 538                 ifconfig $child destroy && cfg=0
 539         done
 540 }
 541
 542 # Create netgraph nodes.
 543 #
 544 ng_mkpeer() {
 545         ngctl -f - 2> /dev/null <<EOF
 546 mkpeer $*
 547 msg dummy nodeinfo
 548 EOF
 549 }
 550
 551 ng_create_one() {
 552         ng_mkpeer $* | while read line; do
 553                 t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'`
 554                 if [ -n "${t}" ]; then
 555                         echo ${t}
 556                         return
 557                 fi
 558         done
 559 }
 560
 561 gif_up() {
 562         for i in ${gif_interfaces}; do
 563                 peers=`get_if_var $i gifconfig_IF`
 564                 case ${peers} in
 565                 '')
 566                         continue
 567                         ;;
 568                 *)
 569                         if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then
 570                                 ifconfig $i create >/dev/null 2>&1
 571                         else
 572                                 gif=`ifconfig gif create`
 573                                 ifconfig $gif name $i
 574                         fi
 575                         ifconfig $i tunnel ${peers}
 576                         ifconfig $i up
 577                         ;;
 578                 esac
 579         done
 580 }
 581
 582 # ng_fec_create ifn
 583 # Configure Fast EtherChannel for interface $ifn. Returns 0 if FEC
 584 # arguments were found and configured; returns !0 otherwise.
 585 ng_fec_create() {
 586          local req_iface iface bogus
 587          req_iface="$1"
 588
 589          ngctl shutdown ${req_iface}: > /dev/null 2>&1
 590
 591          bogus=""
 592          while true; do
 593                  iface=`ng_create_one fec dummy fec`
 594                  if [ -z "${iface}" ]; then
 595                          exit 2
 596                  fi
 597                  if [ "${iface}" = "${req_iface}" ]; then
 598                          break
 599                  fi
 600                  bogus="${bogus} ${iface}"
 601          done
 602
 603          for iface in ${bogus}; do
 604                  ngctl shutdown ${iface}:
 605          done
 606 }
 607
 608 fec_up() {
 609         for i in ${fec_interfaces}; do
 610                 ng_fec_create $i
 611                 for j in `get_if_var $i fecconfig_IF`; do
 612                         case ${j} in
 613                         '')
 614                                 continue
 615                                 ;;
 616                         *)
 617                                 ngctl msg ${i}: add_iface "\"${j}\""
 618                                 ;;
 619                         esac
 620                 done
 621         done
 622 }
 623
 624 #
 625 # ipx_up ifn
 626 # Configure any IPX addresses for interface $ifn. Returns 0 if IPX
 627 # arguments were found and configured; returns 1 otherwise.
 628 #
 629 ipx_up()
 630 {
 631         ifn="$1"
 632         ifconfig_args=`get_if_var $ifn ifconfig_IF_ipx`
 633         if [ -n "${ifconfig_args}" ]; then
 634                 ifconfig ${ifn} ${ifconfig_args}
 635                 return 0
 636         fi
 637         return 1
 638 }
 639
 640 # ipx_down ifn
 641 #       Remove IPX addresses for interface $ifn. Returns 0 if IPX
 642 #       addresses were found and unconfigured. It returns 1, otherwise.
 643 #
 644 ipx_down()
 645 {
 646         [ -z "$1" ] && return 1
 647         _ifs="^"
 648         _ret=1
 649
 650         ifexists $1 || return 1
 651
 652         ipxList="`ifconfig $1 | grep 'ipx ' | tr "\n" "$_ifs"`"
 653
 654         oldifs="$IFS"
 655         IFS="$_ifs"
 656         for _ipx in $ipxList ; do
 657                 # get rid of extraneous line
 658                 [ -z "$_ipx" ] && break
 659
 660                 _ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'`
 661
 662                 IFS="$oldifs"
 663                 ifconfig $1 ${_ipx} delete
 664                 IFS="$_ifs"
 665                 _ret=0
 666         done
 667         IFS="$oldifs"
 668
 669         return $_ret
 670 }
 671
 672 # ifnet_rename
 673 #       Rename all requested interfaces.
 674 #
 675 ifnet_rename()
 676 {
 677
 678         _ifn_list="`ifconfig -l`"
 679         [ -z "$_ifn_list" ] && return 0
 680         for _if in ${_ifn_list} ; do
 681                 _ifname=`get_if_var $_if ifconfig_IF_name`
 682                 if [ ! -z "$_ifname" ]; then
 683                         ifconfig $_if name $_ifname
 684                 fi
 685         done
 686         return 0
 687 }
 688
 689 #
 690 # list_net_interfaces type
 691 #       List all network interfaces. The type of interface returned
 692 #       can be controlled by the type argument. The type
 693 #       argument can be any of the following:
 694 #               nodhcp - all interfaces, excluding DHCP configured interfaces
 695 #               dhcp   - list only DHCP configured interfaces
 696 #       If no argument is specified all network interfaces are output.
 697 #       Note that the list will include cloned interfaces if applicable.
 698 #       Cloned interfaces must already exist to have a chance to appear
 699 #       in the list if ${network_interfaces} is set to `auto'.
 700 #
 701 list_net_interfaces()
 702 {
 703         type=$1
 704
 705         # Get a list of ALL the interfaces and make lo0 first if it's there.
 706         #
 707         case ${network_interfaces} in
 708         [Aa][Uu][Tt][Oo])
 709                 _prefix=''
 710                 _autolist="`ifconfig -l`"
 711                 _lo=
 712                 for _if in ${_autolist} ; do
 713                         if autoif $_if; then
 714                                 if [ "$_if" = "lo0" ]; then
 715                                         _lo="lo0 "
 716                                 else
 717                                         _tmplist="${_tmplist}${_prefix}${_if}"
 718                                         [ -z "$_prefix" ] && _prefix=' '
 719                                 fi
 720                         fi
 721                 done
 722                 _tmplist="${_lo}${_tmplist}"
 723                 ;;
 724         *)
 725                 if [ -z "$type" ]; then
 726                         warn "Values of network_interfaces other than" \
 727                             "AUTO are deprecated"
 728                 fi
 729                 _tmplist="${network_interfaces} ${cloned_interfaces}"
 730                 ;;
 731         esac
 732
 733         if [ -z "$type" ]; then
 734                 echo $_tmplist
 735                 return 0
 736         fi
 737
 738         # Separate out dhcp and non-dhcp interfaces
 739         #
 740         _aprefix=
 741         _bprefix=
 742         for _if in ${_tmplist} ; do
 743                 if dhcpif $_if; then
 744                         _dhcplist="${_dhcplist}${_aprefix}${_if}"
 745                         [ -z "$_aprefix" ] && _aprefix=' '
 746                 elif [ -n "`_ifconfig_getargs $_if`" ]; then
 747                         _nodhcplist="${_nodhcplist}${_bprefix}${_if}"
 748                         [ -z "$_bprefix" ] && _bprefix=' '
 749                 fi
 750         done
 751
 752         case "$type" in
 753         nodhcp)
 754                 echo $_nodhcplist
 755                 ;;
 756         dhcp)
 757                 echo $_dhcplist
 758                 ;;
 759         esac
 760         return 0
 761 }
 762
 763 # get_default_if -address_family
 764 #       Get the interface of the default route for the given address family.
 765 #       The -address_family argument must be suitable passing to route(8).
 766 #
 767 get_default_if()
 768 {
 769         routeget="`route -n get $1 default 2>/dev/null`"
 770         oldifs="$IFS"
 771         IFS="
 772 "
 773         defif=
 774         for line in $routeget ; do
 775                 case $line in
 776                 *interface:*)
 777                         defif=${line##*: }
 778                         ;;
 779                 esac
 780         done
 781         IFS=${oldifs}
 782
 783         echo $defif
 784 }
 785
 786 hexdigit()
 787 {
 788         if [ $1 -lt 10 ]; then
 789                 echo $1
 790         else
 791                 case $1 in
 792                 10)     echo a ;;
 793                 11)     echo b ;;
 794                 12)     echo c ;;
 795                 13)     echo d ;;
 796                 14)     echo e ;;
 797                 15)     echo f ;;
 798                 esac
 799         fi
 800 }
 801
 802 hexprint()
 803 {
 804         val=$1
 805         str=''
 806
 807         dig=`hexdigit $((${val} & 15))`
 808         str=${dig}${str}
 809         val=$((${val} >> 4))
 810         while [ ${val} -gt 0 ]; do
 811                 dig=`hexdigit $((${val} & 15))`
 812                 str=${dig}${str}
 813                 val=$((${val} >> 4))
 814         done
 815
 816         echo ${str}
 817 }
 818
 819 # Setup the interfaces for IPv6
 820 network6_interface_setup()
 821 {
 822         interfaces=$*
 823         rtsol_interfaces=''
 824         case ${ipv6_gateway_enable} in
 825         [Yy][Ee][Ss])
 826                 rtsol_available=no
 827                 ;;
 828         *)
 829                 rtsol_available=yes
 830                 ;;
 831         esac
 832         for i in $interfaces; do
 833                 rtsol_interface=yes
 834                 prefix=`get_if_var $i ipv6_prefix_IF`
 835                 if [ -n "${prefix}" ]; then
 836                         rtsol_available=no
 837                         rtsol_interface=no
 838                         laddr=`network6_getladdr $i`
 839                         hostid=`expr "${laddr}" : 'fe80::\(.*\)%\(.*\)'`
 840                         for j in ${prefix}; do
 841                                 address=$j\:${hostid}
 842                                 ifconfig $i inet6 ${address} prefixlen 64 alias
 843
 844                                 case ${ipv6_gateway_enable} in
 845                                 [Yy][Ee][Ss])
 846                                         # subnet-router anycast address
 847                                         # (rfc2373)
 848                                         ifconfig $i inet6 $j:: prefixlen 64 \
 849                                                 alias anycast
 850                                         ;;
 851                                 esac
 852                         done
 853                 fi
 854                 ipv6_ifconfig=`get_if_var $i ipv6_ifconfig_IF`
 855                 if [ -n "${ipv6_ifconfig}" ]; then
 856                         rtsol_available=no
 857                         rtsol_interface=no
 858                         ifconfig $i inet6 ${ipv6_ifconfig} alias
 859                 fi
 860
 861                 if [ ${rtsol_available} = yes -a ${rtsol_interface} = yes ]
 862                 then
 863                         case ${i} in
 864                         lo0|gif[0-9]*|stf[0-9]*|faith[0-9]*|lp[0-9]*|sl[0-9]*|tun[0-9]*|pflog[0-9]*|pfsync[0-9]*)
 865                                 ;;
 866                         *)
 867                                 rtsol_interfaces="${rtsol_interfaces} ${i}"
 868                                 ;;
 869                         esac
 870                 else
 871                         ifconfig $i inet6
 872                 fi
 873         done
 874
 875         if [ ${rtsol_available} = yes -a -n "${rtsol_interfaces}" ]; then
 876                 # Act as endhost - automatically configured.
 877                 # You can configure only single interface, as
 878                 # specification assumes that autoconfigured host has
 879                 # single interface only.
 880                 sysctl net.inet6.ip6.accept_rtadv=1
 881                 set ${rtsol_interfaces}
 882                 ifconfig $1 up
 883                 rtsol ${rtsol_flags} $1
 884         fi
 885
 886         for i in $interfaces; do
 887                 alias=0
 888                 while : ; do
 889                         ipv6_ifconfig=`get_if_var $i ipv6_ifconfig_IF_alias${alias}`
 890                         if [ -z "${ipv6_ifconfig}" ]; then
 891                                 break;
 892                         fi
 893                         ifconfig $i inet6 ${ipv6_ifconfig} alias
 894                         alias=$((${alias} + 1))
 895                 done
 896         done
 897 }
 898
 899 # Setup IPv6 to IPv4 mapping
 900 network6_stf_setup()
 901 {
 902         case ${stf_interface_ipv4addr} in
 903         [Nn][Oo] | '')
 904                 ;;
 905         *)
 906                 # assign IPv6 addr and interface route for 6to4 interface
 907                 stf_prefixlen=$((16+${stf_interface_ipv4plen:-0}))
 908                 OIFS="$IFS"
 909                 IFS=".$IFS"
 910                 set ${stf_interface_ipv4addr}
 911                 IFS="$OIFS"
 912                 hexfrag1=`hexprint $(($1*256 + $2))`
 913                 hexfrag2=`hexprint $(($3*256 + $4))`
 914                 ipv4_in_hexformat="${hexfrag1}:${hexfrag2}"
 915                 case ${stf_interface_ipv6_ifid} in
 916                 [Aa][Uu][Tt][Oo] | '')
 917                         for i in ${ipv6_network_interfaces}; do
 918                                 laddr=`network6_getladdr ${i}`
 919                                 case ${laddr} in
 920                                 '')
 921                                         ;;
 922                                 *)
 923                                         break
 924                                         ;;
 925                                 esac
 926                         done
 927                         stf_interface_ipv6_ifid=`expr "${laddr}" : \
 928                                                       'fe80::\(.*\)%\(.*\)'`
 929                         case ${stf_interface_ipv6_ifid} in
 930                         '')
 931                                 stf_interface_ipv6_ifid=0:0:0:1
 932                                 ;;
 933                         esac
 934                         ;;
 935                 esac
 936                 ifconfig stf0 create >/dev/null 2>&1
 937                 ifconfig stf0 inet6 2002:${ipv4_in_hexformat}:${stf_interface_ipv6_slaid:-0}:${stf_interface_ipv6_ifid} \
 938                         prefixlen ${stf_prefixlen}
 939                 # disallow packets to malicious 6to4 prefix
 940                 route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject
 941                 route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject
 942                 route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject
 943                 route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject
 944                 ;;
 945         esac
 946 }
 947
 948 # Setup static routes
 949 network6_static_routes_setup()
 950 {
 951         # Set up any static routes.
 952         case ${ipv6_defaultrouter} in
 953         [Nn][Oo] | '')
 954                 ;;
 955         *)
 956                 ipv6_static_routes="default ${ipv6_static_routes}"
 957                 ipv6_route_default="default ${ipv6_defaultrouter}"
 958                 ;;
 959         esac
 960         case ${ipv6_static_routes} in
 961         [Nn][Oo] | '')
 962                 ;;
 963         *)
 964                 for i in ${ipv6_static_routes}; do
 965                         ipv6_route_args=`get_if_var $i ipv6_route_IF`
 966                         route add -inet6 ${ipv6_route_args}
 967                 done
 968                 ;;
 969         esac
 970 }
 971
 972 # Setup faith
 973 network6_faith_setup()
 974 {
 975         case ${ipv6_faith_prefix} in
 976         [Nn][Oo] | '')
 977                 ;;
 978         *)
 979                 sysctl net.inet6.ip6.keepfaith=1
 980                 ifconfig faith0 create >/dev/null 2>&1
 981                 ifconfig faith0 up
 982                 for prefix in ${ipv6_faith_prefix}; do
 983                         prefixlen=`expr "${prefix}" : ".*/\(.*\)"`
 984                         case ${prefixlen} in
 985                         '')
 986                                 prefixlen=96
 987                                 ;;
 988                         *)
 989                                 prefix=`expr "${prefix}" : \
 990                                              "\(.*\)/${prefixlen}"`
 991                                 ;;
 992                         esac
 993                         route add -inet6 ${prefix} -prefixlen ${prefixlen} ::1
 994                         route change -inet6 ${prefix} -prefixlen ${prefixlen} \
 995                                 -ifp faith0
 996                 done
 997                 ;;
 998         esac
 999 }
1000
1001 # Install the "default interface" to kernel, which will be used
1002 # as the default route when there's no router.
1003 network6_default_interface_setup()
1004 {
1005         # Choose IPv6 default interface if it is not clearly specified.
1006         case ${ipv6_default_interface} in
1007         '')
1008                 for i in ${ipv6_network_interfaces}; do
1009                         case $i in
1010                         lo0|faith[0-9]*)
1011                                 continue
1012                                 ;;
1013                         esac
1014                         laddr=`network6_getladdr $i exclude_tentative`
1015                         case ${laddr} in
1016                         '')
1017                                 ;;
1018                         *)
1019                                 ipv6_default_interface=$i
1020                                 break
1021                                 ;;
1022                         esac
1023                 done
1024                 ;;
1025         esac
1026
1027         # Disallow unicast packets without outgoing scope identifiers,
1028         # or route such packets to a "default" interface, if it is specified.
1029         route add -inet6 fe80:: -prefixlen 10 ::1 -reject
1030         case ${ipv6_default_interface} in
1031         [Nn][Oo] | '')
1032                 route add -inet6 ff02:: -prefixlen 16 ::1 -reject
1033                 ;;
1034         *)
1035                 laddr=`network6_getladdr ${ipv6_default_interface}`
1036                 route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \
1037                         -cloning
1038
1039                 # Disable installing the default interface with the
1040                 # case net.inet6.ip6.forwarding=0 and
1041                 # net.inet6.ip6.accept_rtadv=0, due to avoid conflict
1042                 # between the default router list and the manual
1043                 # configured default route.
1044                 case ${ipv6_gateway_enable} in
1045                 [Yy][Ee][Ss])
1046                         ;;
1047                 *)
1048                         if [ `sysctl -n net.inet6.ip6.accept_rtadv` -eq 1 ]
1049                         then
1050                                 ndp -I ${ipv6_default_interface}
1051                         fi
1052                         ;;
1053                 esac
1054                 ;;
1055         esac
1056 }
1057
1058 network6_getladdr()
1059 {
1060         ifconfig $1 2>/dev/null | while read proto addr rest; do
1061                 case ${proto} in
1062                 inet6)
1063                         case ${addr} in
1064                         fe80::*)
1065                                 if [ -z "$2" ]; then
1066                                         echo ${addr}
1067                                         return
1068                                 fi
1069                                 case ${rest} in
1070                                 *tentative*)
1071                                         continue
1072                                         ;;
1073                                 *)
1074                                         echo ${addr}
1075                                         return
1076                                 esac
1077                         esac
1078                 esac
1079         done
1080 }