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 IFCONFIG_CMD="/sbin/ifconfig"
  28
  29 # Maximum number of addresses expanded from a address range specification.
  30 _IPEXPANDMAX=31
  31
  32 #
  33 # Subroutines commonly used from network startup scripts.
  34 # Requires that rc.conf be loaded first.
  35 #
  36
  37 # ifn_start ifn
  38 #       Bring up and configure an interface.  If some configuration is
  39 #       applied, print the interface configuration.
  40 #
  41 ifn_start()
  42 {
  43         local ifn cfg
  44         ifn="$1"
  45         cfg=1
  46
  47         [ -z "$ifn" ] && err 1 "ifn_start called without an interface"
  48
  49         ifscript_up ${ifn} && cfg=0
  50         ifconfig_up ${ifn} && cfg=0
  51         afexists inet && ipv4_up ${ifn} && cfg=0
  52         afexists inet6 && ipv6_up ${ifn} && cfg=0
  53         afexists ipx && ipx_up ${ifn} && cfg=0
  54         childif_create ${ifn} && cfg=0
  55
  56         return $cfg
  57 }
  58
  59 # ifn_stop ifn
  60 #       Shutdown and de-configure an interface.  If action is taken,
  61 #       print the interface name.
  62 #
  63 ifn_stop()
  64 {
  65         local ifn cfg
  66         ifn="$1"
  67         cfg=1
  68
  69         [ -z "$ifn" ] && err 1 "ifn_stop called without an interface"
  70
  71         afexists ipx && ipx_down ${ifn} && cfg=0
  72         afexists inet6 && ipv6_down ${ifn} && cfg=0
  73         afexists inet && ipv4_down ${ifn} && cfg=0
  74         ifconfig_down ${ifn} && cfg=0
  75         ifscript_down ${ifn} && cfg=0
  76         childif_destroy ${ifn} && cfg=0
  77
  78         return $cfg
  79 }
  80
  81 # ifconfig_up if
  82 #       Evaluate ifconfig(8) arguments for interface $if and
  83 #       run ifconfig(8) with those arguments. It returns 0 if
  84 #       arguments were found and executed or 1 if the interface
  85 #       had no arguments.  Pseudo arguments DHCP and WPA are handled
  86 #       here.
  87 #
  88 ifconfig_up()
  89 {
  90         local _cfg _ipv6_opts ifconfig_args
  91         _cfg=1
  92
  93         # Make sure lo0 always comes up.
  94         if [ "$1" = "lo0" ]; then
  95                 _cfg=0
  96         fi
  97
  98         # ifconfig_IF
  99         ifconfig_args=`ifconfig_getargs $1`
 100         if [ -n "${ifconfig_args}" ]; then
 101                 eval ${IFCONFIG_CMD} $1 ${ifconfig_args}
 102                 _cfg=0
 103         fi
 104
 105         # inet6 specific
 106         if afexists inet6; then
 107                 if checkyesno ipv6_activate_all_interfaces; then
 108                         _ipv6_opts="-ifdisabled"
 109                 elif [ "$1" != "lo0" ]; then
 110                         _ipv6_opts="ifdisabled"
 111                 fi
 112
 113                 # backward compatibility: $ipv6_enable
 114                 case $ipv6_enable in
 115                 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
 116                         case $1 in
 117                         bridge[0-9]*)
 118                                 # No accept_rtadv by default on if_bridge(4)
 119                                 # to avoid a conflict with the member
 120                                 # interfaces.
 121                         ;;
 122                         *)
 123                                 if ! checkyesno ipv6_gateway_enable; then
 124                                         _ipv6_opts="${_ipv6_opts} accept_rtadv"
 125                                 fi
 126                         ;;
 127                         esac
 128                 ;;
 129                 esac
 130
 131                 case $ipv6_cpe_wanif in
 132                 $1)
 133                         _ipv6_opts="${_ipv6_opts} -no_radr accept_rtadv"
 134                 ;;
 135                 esac
 136
 137                 if [ -n "${_ipv6_opts}" ]; then
 138                         ${IFCONFIG_CMD} $1 inet6 ${_ipv6_opts}
 139                 fi
 140
 141                 # ifconfig_IF_ipv6
 142                 ifconfig_args=`ifconfig_getargs $1 ipv6`
 143                 if [ -n "${ifconfig_args}" ]; then
 144                         # backward compatibility: inet6 keyword
 145                         case "${ifconfig_args}" in
 146                         :*|[0-9a-fA-F]*:*)
 147                                 warn "\$ifconfig_$1_ipv6 needs " \
 148                                     "\"inet6\" keyword for an IPv6 address."
 149                                 ifconfig_args="inet6 ${ifconfig_args}"
 150                         ;;
 151                         esac
 152                         ${IFCONFIG_CMD} $1 inet6 -ifdisabled
 153                         eval ${IFCONFIG_CMD} $1 ${ifconfig_args}
 154                         _cfg=0
 155                 fi
 156
 157                 # $ipv6_prefix_IF will be handled in
 158                 # ipv6_prefix_hostid_addr_common().
 159                 ifconfig_args=`get_if_var $1 ipv6_prefix_IF`
 160                 if [ -n "${ifconfig_args}" ]; then
 161                         ${IFCONFIG_CMD} $1 inet6 -ifdisabled
 162                         _cfg=0
 163                 fi
 164
 165                 # backward compatibility: $ipv6_ifconfig_IF
 166                 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF`
 167                 if [ -n "${ifconfig_args}" ]; then
 168                         warn "\$ipv6_ifconfig_$1 is obsolete." \
 169                             "  Use ifconfig_$1_ipv6 instead."
 170                         ${IFCONFIG_CMD} $1 inet6 -ifdisabled
 171                         eval ${IFCONFIG_CMD} $1 inet6 ${ifconfig_args}
 172                         _cfg=0
 173                 fi
 174         fi
 175
 176         ifalias $1 link alias
 177         ifalias $1 ether alias
 178
 179         if [ ${_cfg} -eq 0 ]; then
 180                 ${IFCONFIG_CMD} $1 up
 181         fi
 182
 183         if wpaif $1; then
 184                 /etc/rc.d/wpa_supplicant start $1
 185                 _cfg=0          # XXX: not sure this should count
 186         elif hostapif $1; then
 187                 /etc/rc.d/hostapd start $1
 188                 _cfg=0
 189         fi
 190
 191         if dhcpif $1; then
 192                 if [ $_cfg -ne 0 ] ; then
 193                         ${IFCONFIG_CMD} $1 up
 194                 fi
 195                 if syncdhcpif $1; then
 196                         /etc/rc.d/dhclient start $1
 197                 fi
 198                 _cfg=0
 199         fi
 200
 201         return $_cfg
 202 }
 203
 204 # ifconfig_down if
 205 #       returns 1 if wpa_supplicant or dhclient was stopped or
 206 #       the interface exists.
 207 #
 208 ifconfig_down()
 209 {
 210         local _cfg
 211         _cfg=1
 212
 213         if wpaif $1; then
 214                 /etc/rc.d/wpa_supplicant stop $1
 215                 _cfg=0
 216         elif hostapif $1; then
 217                 /etc/rc.d/hostapd stop $1
 218                 _cfg=0
 219         fi
 220
 221         if dhcpif $1; then
 222                 /etc/rc.d/dhclient stop $1
 223                 _cfg=0
 224         fi
 225
 226         if ifexists $1; then
 227                 ${IFCONFIG_CMD} $1 down
 228                 _cfg=0
 229         fi
 230
 231         return $_cfg
 232 }
 233
 234 # get_if_var if var [default]
 235 #       Return the value of the pseudo-hash corresponding to $if where
 236 #       $var is a string containg the sub-string "IF" which will be
 237 #       replaced with $if after the characters defined in _punct are
 238 #       replaced with '_'. If the variable is unset, replace it with
 239 #       $default if given.
 240 get_if_var()
 241 {
 242         local _if _punct _punct_c _var _default prefix suffix
 243
 244         if [ $# -ne 2 -a $# -ne 3 ]; then
 245                 err 3 'USAGE: get_if_var name var [default]'
 246         fi
 247
 248         _if=$1
 249         _punct=". - / +"
 250         for _punct_c in $_punct; do
 251                 _if=`ltr ${_if} ${_punct_c} '_'`
 252         done
 253         _var=$2
 254         _default=$3
 255
 256         prefix=${_var%%IF*}
 257         suffix=${_var##*IF}
 258         eval echo \${${prefix}${_if}${suffix}-${_default}}
 259 }
 260
 261 # _ifconfig_getargs if [af]
 262 #       Prints the arguments for the supplied interface to stdout.
 263 #       Returns 1 if empty.  In general, ifconfig_getargs should be used
 264 #       outside this file.
 265 _ifconfig_getargs()
 266 {
 267         local _ifn _af
 268         _ifn=$1
 269         _af=${2+_$2}
 270
 271         if [ -z "$_ifn" ]; then
 272                 return 1
 273         fi
 274
 275         get_if_var $_ifn ifconfig_IF$_af "$ifconfig_DEFAULT"
 276 }
 277
 278 # ifconfig_getargs if [af]
 279 #       Takes the result from _ifconfig_getargs and removes pseudo
 280 #       args such as DHCP and WPA.
 281 ifconfig_getargs()
 282 {
 283         local _tmpargs _arg _args
 284         _tmpargs=`_ifconfig_getargs $1 $2`
 285         if [ $? -eq 1 ]; then
 286                 return 1
 287         fi
 288         _args=
 289
 290         for _arg in $_tmpargs; do
 291                 case $_arg in
 292                 [Dd][Hh][Cc][Pp]) ;;
 293                 [Nn][Oo][Aa][Uu][Tt][Oo]) ;;
 294                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
 295                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
 296                 [Ww][Pp][Aa]) ;;
 297                 [Hh][Oo][Ss][Tt][Aa][Pp]) ;;
 298                 *)
 299                         _args="$_args $_arg"
 300                         ;;
 301                 esac
 302         done
 303
 304         echo $_args
 305 }
 306
 307 # autoif
 308 #       Returns 0 if the interface should be automatically configured at
 309 #       boot time and 1 otherwise.
 310 autoif()
 311 {
 312         local _tmpargs _arg
 313         _tmpargs=`_ifconfig_getargs $1`
 314
 315         for _arg in $_tmpargs; do
 316                 case $_arg in
 317                 [Nn][Oo][Aa][Uu][Tt][Oo])
 318                         return 1
 319                         ;;
 320                 esac
 321         done
 322
 323         return 0
 324 }
 325
 326 # dhcpif if
 327 #       Returns 0 if the interface is a DHCP interface and 1 otherwise.
 328 dhcpif()
 329 {
 330         local _tmpargs _arg
 331         _tmpargs=`_ifconfig_getargs $1`
 332
 333         case $1 in
 334         lo[0-9]*|\
 335         stf[0-9]*|\
 336         faith[0-9]*|\
 337         lp[0-9]*|\
 338         sl[0-9]*)
 339                 return 1
 340                 ;;
 341         esac
 342         if noafif $1; then
 343                 return 1
 344         fi
 345
 346         for _arg in $_tmpargs; do
 347                 case $_arg in
 348                 [Dd][Hh][Cc][Pp])
 349                         return 0
 350                         ;;
 351                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 352                         return 0
 353                         ;;
 354                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 355                         return 0
 356                         ;;
 357                 esac
 358         done
 359
 360         return 1
 361 }
 362
 363 # syncdhcpif
 364 #       Returns 0 if the interface should be configured synchronously and
 365 #       1 otherwise.
 366 syncdhcpif()
 367 {
 368         local _tmpargs _arg
 369         _tmpargs=`_ifconfig_getargs $1`
 370
 371         if noafif $1; then
 372                 return 1
 373         fi
 374
 375         for _arg in $_tmpargs; do
 376                 case $_arg in
 377                 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 378                         return 1
 379                         ;;
 380                 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
 381                         return 0
 382                         ;;
 383                 esac
 384         done
 385
 386         checkyesno synchronous_dhclient
 387 }
 388
 389 # wpaif if
 390 #       Returns 0 if the interface is a WPA interface and 1 otherwise.
 391 wpaif()
 392 {
 393         local _tmpargs _arg
 394         _tmpargs=`_ifconfig_getargs $1`
 395
 396         for _arg in $_tmpargs; do
 397                 case $_arg in
 398                 [Ww][Pp][Aa])
 399                         return 0
 400                         ;;
 401                 esac
 402         done
 403
 404         return 1
 405 }
 406
 407 # hostapif if
 408 #       Returns 0 if the interface is a HOSTAP interface and 1 otherwise.
 409 hostapif()
 410 {
 411         local _tmpargs _arg
 412         _tmpargs=`_ifconfig_getargs $1`
 413
 414         for _arg in $_tmpargs; do
 415                 case $_arg in
 416                 [Hh][Oo][Ss][Tt][Aa][Pp])
 417                         return 0
 418                         ;;
 419                 esac
 420         done
 421
 422         return 1
 423 }
 424
 425 # afexists af
 426 #       Returns 0 if the address family is enabled in the kernel
 427 #       1 otherwise.
 428 afexists()
 429 {
 430         local _af
 431         _af=$1
 432
 433         case ${_af} in
 434         inet|inet6)
 435                 check_kern_features ${_af}
 436                 ;;
 437         ipx)
 438                 ${SYSCTL_N} net.ipx > /dev/null 2>&1
 439                 ;;
 440         atm)
 441                 if [ -x /sbin/atmconfig ]; then
 442                         /sbin/atmconfig diag list > /dev/null 2>&1
 443                 else
 444                         return 1
 445                 fi
 446                 ;;
 447         link|ether)
 448                 return 0
 449                 ;;
 450         *)
 451                 err 1 "afexists(): Unsupported address family: $_af"
 452                 ;;
 453         esac
 454 }
 455
 456 # noafif if
 457 #       Returns 0 if the interface has no af configuration and 1 otherwise.
 458 noafif()
 459 {
 460         local _if
 461         _if=$1
 462
 463         case $_if in
 464         pflog[0-9]*|\
 465         pfsync[0-9]*|\
 466         an[0-9]*|\
 467         ath[0-9]*|\
 468         ipw[0-9]*|\
 469         ipfw[0-9]*|\
 470         iwi[0-9]*|\
 471         iwn[0-9]*|\
 472         ral[0-9]*|\
 473         wi[0-9]*|\
 474         wl[0-9]*|\
 475         wpi[0-9]*)
 476                 return 0
 477                 ;;
 478         esac
 479
 480         return 1
 481 }
 482
 483 # ipv6if if
 484 #       Returns 0 if the interface should be configured for IPv6 and
 485 #       1 otherwise.
 486 ipv6if()
 487 {
 488         local _if _tmpargs i
 489         _if=$1
 490
 491         if ! afexists inet6; then
 492                 return 1
 493         fi
 494
 495         # lo0 is always IPv6-enabled
 496         case $_if in
 497         lo0)
 498                 return 0
 499                 ;;
 500         esac
 501
 502         case "${ipv6_network_interfaces}" in
 503         $_if|"$_if "*|*" $_if"|*" $_if "*|[Aa][Uu][Tt][Oo])
 504                 # True if $ifconfig_IF_ipv6 is defined.
 505                 _tmpargs=`_ifconfig_getargs $_if ipv6`
 506                 if [ -n "${_tmpargs}" ]; then
 507                         return 0
 508                 fi
 509
 510                 # True if $ipv6_prefix_IF is defined.
 511                 _tmpargs=`get_if_var $_if ipv6_prefix_IF`
 512                 if [ -n "${_tmpargs}" ]; then
 513                         return 0
 514                 fi
 515
 516                 # backward compatibility: True if $ipv6_ifconfig_IF is defined.
 517                 _tmpargs=`get_if_var $_if ipv6_ifconfig_IF`
 518                 if [ -n "${_tmpargs}" ]; then
 519                         return 0
 520                 fi
 521                 ;;
 522         esac
 523
 524         return 1
 525 }
 526
 527 # ipv6_autoconfif if
 528 #       Returns 0 if the interface should be configured for IPv6 with
 529 #       Stateless Address Configuration; 1 otherwise.
 530 ipv6_autoconfif()
 531 {
 532         local _if _tmpargs _arg
 533         _if=$1
 534
 535         case $_if in
 536         lo[0-9]*|\
 537         stf[0-9]*|\
 538         faith[0-9]*|\
 539         lp[0-9]*|\
 540         sl[0-9]*)
 541                 return 1
 542                 ;;
 543         esac
 544         if noafif $_if; then
 545                 return 1
 546         fi
 547         if ! ipv6if $_if; then
 548                 return 1
 549         fi
 550         if checkyesno ipv6_gateway_enable; then
 551                 return 1
 552         fi
 553         _tmpargs=`get_if_var $_if ipv6_prefix_IF`
 554         if [ -n "${_tmpargs}" ]; then
 555                 return 1
 556         fi
 557         # backward compatibility: $ipv6_enable
 558         case $ipv6_enable in
 559         [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
 560                 if checkyesno ipv6_gateway_enable; then
 561                         return 1
 562                 fi
 563                 case $1 in
 564                 bridge[0-9]*)
 565                         # No accept_rtadv by default on if_bridge(4)
 566                         # to avoid a conflict with the member
 567                         # interfaces.
 568                         return 1
 569                 ;;
 570                 *)
 571                         return 0
 572                 ;;
 573                 esac
 574         ;;
 575         esac
 576
 577         _tmpargs=`_ifconfig_getargs $_if ipv6`
 578         for _arg in $_tmpargs; do
 579                 case $_arg in
 580                 accept_rtadv)
 581                         return 0
 582                         ;;
 583                 esac
 584         done
 585
 586         # backward compatibility: $ipv6_ifconfig_IF
 587         _tmpargs=`get_if_var $_if ipv6_ifconfig_IF`
 588         for _arg in $_tmpargs; do
 589                 case $_arg in
 590                 accept_rtadv)
 591                         return 0
 592                         ;;
 593                 esac
 594         done
 595
 596         return 1
 597 }
 598
 599 # ifexists if
 600 #       Returns 0 if the interface exists and 1 otherwise.
 601 ifexists()
 602 {
 603         [ -z "$1" ] && return 1
 604         ${IFCONFIG_CMD} -n $1 > /dev/null 2>&1
 605 }
 606
 607 # ipv4_up if
 608 #       add IPv4 addresses to the interface $if
 609 ipv4_up()
 610 {
 611         local _if _ret
 612         _if=$1
 613         _ret=1
 614
 615         # Add 127.0.0.1/8 to lo0 unless otherwise specified.
 616         if [ "${_if}" = "lo0" ]; then
 617                 ifconfig_args=`get_if_var ${_if} ifconfig_IF`
 618                 if [ -z "${ifconfig_args}" ]; then
 619                         ${IFCONFIG_CMD} ${_if} inet 127.0.0.1/8 alias
 620                 fi
 621         fi
 622         ifalias ${_if} inet alias && _ret=0
 623
 624         return $_ret
 625 }
 626
 627 # ipv6_up if
 628 #       add IPv6 addresses to the interface $if
 629 ipv6_up()
 630 {
 631         local _if _ret
 632         _if=$1
 633         _ret=1
 634
 635         if ! ipv6if $_if; then
 636                 return 0
 637         fi
 638
 639         ifalias ${_if} inet6 alias && _ret=0
 640         ipv6_prefix_hostid_addr_common ${_if} alias && _ret=0
 641         ipv6_accept_rtadv_up ${_if} && _ret=0
 642
 643         return $_ret
 644 }
 645
 646 # ipv4_down if
 647 #       remove IPv4 addresses from the interface $if
 648 ipv4_down()
 649 {
 650         local _if _ifs _ret inetList oldifs _inet
 651         _if=$1
 652         _ifs="^"
 653         _ret=1
 654
 655         ifalias ${_if} inet -alias && _ret=0
 656
 657         inetList="`${IFCONFIG_CMD} ${_if} | grep 'inet ' | tr "\n" "$_ifs"`"
 658
 659         oldifs="$IFS"
 660         IFS="$_ifs"
 661         for _inet in $inetList ; do
 662                 # get rid of extraneous line
 663                 [ -z "$_inet" ] && break
 664
 665                 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'`
 666
 667                 IFS="$oldifs"
 668                 ${IFCONFIG_CMD} ${_if} ${_inet} delete
 669                 IFS="$_ifs"
 670                 _ret=0
 671         done
 672         IFS="$oldifs"
 673
 674         return $_ret
 675 }
 676
 677 # ipv6_down if
 678 #       remove IPv6 addresses from the interface $if
 679 ipv6_down()
 680 {
 681         local _if _ifs _ret inetList oldifs _inet6
 682         _if=$1
 683         _ifs="^"
 684         _ret=1
 685
 686         if ! ipv6if $_if; then
 687                 return 0
 688         fi
 689
 690         ipv6_accept_rtadv_down ${_if} && _ret=0
 691         ipv6_prefix_hostid_addr_common ${_if} -alias && _ret=0
 692         ifalias ${_if} inet6 -alias && _ret=0
 693
 694         inetList="`${IFCONFIG_CMD} ${_if} | grep 'inet6 ' | tr "\n" "$_ifs"`"
 695
 696         oldifs="$IFS"
 697         IFS="$_ifs"
 698         for _inet6 in $inetList ; do
 699                 # get rid of extraneous line
 700                 [ -z "$_inet6" ] && break
 701
 702                 _inet6=`expr "$_inet6" : '.*\(inet6 \([0-9a-f:]*\)\).*'`
 703
 704                 IFS="$oldifs"
 705                 ${IFCONFIG_CMD} ${_if} ${_inet6} -alias
 706                 IFS="$_ifs"
 707                 _ret=0
 708         done
 709         IFS="$oldifs"
 710
 711         return $_ret
 712 }
 713
 714 # ifalias if af action
 715 #       Configure or remove aliases for network interface $if.
 716 #       It returns 0 if at least one alias was configured or
 717 #       removed, or 1 if there were none.
 718 #
 719 ifalias()
 720 {
 721         local _ret
 722         _ret=1
 723
 724         afexists $2 || return $_ret
 725
 726         case "$2" in
 727         inet|inet6|link|ether)
 728                 ifalias_af_common $1 $2 $3 && _ret=0
 729                 ;;
 730         esac
 731
 732         return $_ret
 733 }
 734
 735 # ifalias_expand_addr af action addr
 736 #       Expand address range ("N-M") specification in addr.
 737 #       "addr" must not include an address-family keyword.
 738 #       The results will include an address-family keyword.
 739 #
 740 ifalias_expand_addr()
 741 {
 742         local _af _action
 743
 744         _af=$1
 745         _action=$2
 746         shift 2
 747
 748         afexists $_af || return
 749         ifalias_expand_addr_$_af $_action $*
 750 }
 751
 752 # ifalias_expand_addr_inet action addr
 753 #       Helper function for ifalias_expand_addr().  Handles IPv4.
 754 #
 755 ifalias_expand_addr_inet()
 756 {
 757         local _action _arg _cidr _cidr_addr _exargs
 758         local _ipaddr _plen _range _iphead _iptail _iplow _iphigh _ipcount
 759         local _retstr _c
 760         _action=$1
 761         _arg=$2
 762         shift 2
 763         _exargs=$*
 764         _retstr=
 765
 766         case $_action:$_arg:$_exargs in
 767         *:*--*)         return ;;       # invalid
 768         tmp:*[0-9]-[0-9]*:*)            # to be expanded
 769                 _action="alias"
 770         ;;
 771         *:*[0-9]-[0-9]*:*)              # to be expanded
 772         ;;
 773         tmp:*:*netmask*)                # already expanded w/ netmask option
 774                 echo ${_arg%/[0-9]*} $_exargs && return
 775         ;;
 776         tmp:*:*)                        # already expanded w/o netmask option
 777                 echo $_arg $_exargs && return
 778         ;;
 779         *:*:*netmask*)                  # already expanded w/ netmask option
 780                 echo inet ${_arg%/[0-9]*} $_exargs && return
 781         ;;
 782         *:*:*)                          # already expanded w/o netmask option
 783                 echo inet $_arg $_exargs && return
 784         ;;
 785         esac
 786
 787         for _cidr in $_arg; do
 788                 _ipaddr=${_cidr%%/*}
 789                 _plen=${_cidr##*/}
 790                 # When subnet prefix length is not specified, use /32.
 791                 case $_plen in
 792                 $_ipaddr)       _plen=32 ;;     # "/" character not found
 793                 esac
 794
 795                 OIFS=$IFS
 796                 IFS=. set -- $_ipaddr
 797                 _range=
 798                 _iphead=
 799                 _iptail=
 800                 for _c in $@; do
 801                         case $_range:$_c in
 802                         :[0-9]*-[0-9]*)
 803                                 _range=$_c
 804                         ;;
 805                         :*)
 806                                 _iphead="${_iphead}${_iphead:+.}${_c}"
 807                         ;;
 808                         *:*)
 809                                 _iptail="${_iptail}${_iptail:+.}${_c}"
 810                         ;;
 811                         esac
 812                 done
 813                 IFS=$OIFS
 814                 _iplow=${_range%-*}
 815                 _iphigh=${_range#*-}
 816
 817                 # clear netmask when removing aliases
 818                 if [ "$_action" = "-alias" ]; then
 819                         _plen=""
 820                 fi
 821
 822                 _ipcount=$_iplow
 823                 while [ "$_ipcount" -le "$_iphigh" ]; do
 824                         _retstr="${_retstr} ${_iphead}${_iphead:+.}${_ipcount}${_iptail:+.}${_iptail}${_plen:+/}${_plen}"
 825                         if [ $_ipcount -gt $(($_iplow + $_IPEXPANDMAX)) ]; then
 826                                 warn "Range specification is too large (${_iphead}${_iphead:+.}${_iplow}${_iptail:+.}${_iptail}-${_iphead}${_iphead:+.}${_iphigh}${_iptail:+.}${_iptail}).  ${_iphead}${_iphead:+.}${_iplow}${_iptail:+.}${_iptail}-${_iphead}${_iphead:+.}${_ipcount}${_iptail:+.}${_iptail} was processed."
 827                                 break
 828                         else
 829                                 _ipcount=$(($_ipcount + 1))
 830                         fi
 831                         # Forcibly set /32 for remaining aliases.
 832                         _plen=32
 833                 done
 834         done
 835
 836         for _c in $_retstr; do
 837                 ifalias_expand_addr_inet $_action $_c $_exargs
 838         done
 839 }
 840
 841 # ifalias_expand_addr_inet6 action addr
 842 #       Helper function for ifalias_expand_addr().  Handles IPv6.
 843 #
 844 ifalias_expand_addr_inet6()
 845 {
 846         local _action _arg _cidr _cidr_addr _exargs
 847         local _ipaddr _plen _ipleft _ipright _iplow _iphigh _ipcount
 848         local _ipv4part
 849         local _retstr _c
 850         _action=$1
 851         _arg=$2
 852         shift 2
 853         _exargs=$*
 854         _retstr=
 855
 856         case $_action:$_arg:$_exargs in
 857         *:*--*:*)       return ;;       # invalid
 858         tmp:*[0-9a-zA-Z]-[0-9a-zA-Z]*:*)# to be expanded
 859                 _action="alias"
 860         ;;
 861         *:*[0-9a-zA-Z]-[0-9a-zA-Z]*:*)  # to be expanded
 862         ;;
 863         tmp:*:*prefixlen*)      # already expanded w/ prefixlen option
 864                 echo ${_arg%/[0-9]*} $_exargs && return
 865         ;;
 866         tmp:*:*)                # already expanded w/o prefixlen option
 867                 echo $_arg $_exargs && return
 868         ;;
 869         *:*:*prefixlen*)        # already expanded w/ prefixlen option
 870                 echo inet6 ${_arg%/[0-9]*} $_exargs && return
 871         ;;
 872         *:*:*)                  # already expanded w/o prefixlen option
 873                 echo inet6 $_arg $_exargs && return
 874         ;;
 875         esac
 876
 877         for _cidr in $_arg; do
 878                 _ipaddr="${_cidr%%/*}"
 879                 _plen="${_cidr##*/}"
 880
 881                 case $_action:$_ipaddr:$_cidr in
 882                 -alias:*:*)             unset _plen ;;
 883                 *:$_cidr:$_ipaddr)      unset _plen ;;
 884                 esac
 885
 886                 if [ "${_ipaddr%:*.*.*.*}" = "$_ipaddr" ]; then
 887                         # Handle !v4mapped && !v4compat addresses.
 888
 889                         # The default prefix length is 64.
 890                         case $_ipaddr:$_cidr in
 891                         $_cidr:$_ipaddr)        _plen="64" ;;
 892                         esac
 893                         _ipleft=${_ipaddr%-*}
 894                         _ipright=${_ipaddr#*-}
 895                         _iplow=${_ipleft##*:}
 896                         _iphigh=${_ipright%%:*}
 897                         _ipleft=${_ipleft%:*}
 898                         _ipright=${_ipright#*:}
 899
 900                         if [ "$_iphigh" = "$_ipright" ]; then
 901                                 unset _ipright
 902                         else
 903                                 _ipright=:$_ipright
 904                         fi
 905
 906                         if [ -n "$_iplow" -a -n "$_iphigh" ]; then
 907                                 _iplow=$((0x$_iplow))
 908                                 _iphigh=$((0x$_iphigh))
 909                                 _ipcount=$_iplow
 910                                 while [ $_ipcount -le $_iphigh ]; do
 911                                         _r=`printf "%s:%04x%s%s" \
 912                                             $_ipleft $_ipcount $_ipright \
 913                                             ${_plen:+/}$_plen`
 914                                         _retstr="$_retstr $_r"
 915                                         if [ $_ipcount -gt $(($_iplow + $_IPEXPANDMAX)) ]
 916                                         then
 917                                                 warn "Range specification is too large $(printf '(%s:%04x%s-%s:%04x%s)' $_ipleft $_iplow $_ipright $_ipleft $_iphigh $_ipright). $(printf '%s:%04x%s-%s:%04x%s' $_ipleft $_iplow $_ipright $_ipleft $_ipcount $_ipright) was processed."
 918                                                 break
 919                                         else
 920                                                 _ipcount=$(($_ipcount + 1))
 921                                         fi
 922                                 done
 923                         else
 924                                 _retstr="${_ipaddr}${_plen:+/}${_plen}"
 925                         fi
 926
 927                         for _c in $_retstr; do
 928                                 ifalias_expand_addr_inet6 $_action $_c $_exargs
 929                         done
 930                 else
 931                         # v4mapped/v4compat should handle as an IPv4 alias
 932                         _ipv4part=${_ipaddr##*:}
 933
 934                         # Adjust prefix length if any.  If not, set the
 935                         # default prefix length as 32.
 936                         case $_ipaddr:$_cidr in
 937                         $_cidr:$_ipaddr)        _plen=32 ;;
 938                         *)                      _plen=$(($_plen - 96)) ;;
 939                         esac
 940
 941                         _retstr=`ifalias_expand_addr_inet \
 942                             tmp ${_ipv4part}${_plen:+/}${_plen}`
 943                         for _c in $_retstr; do
 944                                 ifalias_expand_addr_inet $_action $_c $_exargs
 945                         done
 946                 fi
 947         done
 948 }
 949
 950 # ifalias_af_common_handler if af action args
 951 #       Helper function for ifalias_af_common().
 952 #
 953 ifalias_af_common_handler()
 954 {
 955         local _ret _if _af _action _args _c _tmpargs
 956
 957         _ret=1
 958         _if=$1
 959         _af=$2
 960         _action=$3
 961         shift 3
 962         _args=$*
 963
 964         case $_args in
 965         ${_af}\ *)      ;;
 966         *)      return  ;;
 967         esac
 968
 969         # link(ether) does not support address removal.
 970         case $_af:$_action in
 971         link:-alias|ether:-alias)       return ;;
 972         esac
 973
 974         _tmpargs=
 975         for _c in $_args; do
 976                 case $_c in
 977                 ${_af})
 978                         case $_tmpargs in
 979                         ${_af}\ *-*)
 980                                 ifalias_af_common_handler $_if $_af $_action \
 981                                 `ifalias_expand_addr $_af $_action ${_tmpargs#${_af}\ }`
 982                         ;;
 983                         ${_af}\ *)
 984                                 ${IFCONFIG_CMD} $_if $_tmpargs $_action && _ret=0
 985                         ;;
 986                         esac
 987                         _tmpargs=$_af
 988                 ;;
 989                 *)
 990                         _tmpargs="$_tmpargs $_c"
 991                 ;;
 992                 esac
 993         done
 994         # Process the last component if any.
 995         if [ -n "$_tmpargs}" ]; then
 996                 case $_tmpargs in
 997                 ${_af}\ *-*)
 998                         ifalias_af_common_handler $_if $_af $_action \
 999                         `ifalias_expand_addr $_af $_action ${_tmpargs#${_af}\ }`
1000                 ;;
1001                 ${_af}\ *)
1002                         ${IFCONFIG_CMD} $_if $_tmpargs $_action && _ret=0
1003                 ;;
1004                 esac
1005         fi
1006
1007         return $_ret
1008 }
1009
1010 # ifalias_af_common if af action
1011 #       Helper function for ifalias().
1012 #
1013 ifalias_af_common()
1014 {
1015         local _ret _if _af _action alias ifconfig_args _aliasn _c _tmpargs _iaf
1016
1017         _ret=1
1018         _aliasn=
1019         _if=$1
1020         _af=$2
1021         _action=$3
1022
1023         # ifconfig_IF_aliasN which starts with $_af
1024         alias=0
1025         while : ; do
1026                 ifconfig_args=`get_if_var $_if ifconfig_IF_alias${alias}`
1027                 _iaf=
1028                 case $ifconfig_args in
1029                 inet\ *)        _iaf=inet ;;
1030                 inet6\ *)       _iaf=inet6 ;;
1031                 ipx\ *)         _iaf=ipx ;;
1032                 link\ *)        _iaf=link ;;
1033                 ether\ *)       _iaf=ether ;;
1034                 esac
1035
1036                 case ${_af}:${_action}:${_iaf}:"${ifconfig_args}" in
1037                 ${_af}:*:${_af}:*)
1038                         _aliasn="$_aliasn $ifconfig_args"
1039                         ;;
1040                 ${_af}:*:"":"")
1041                         break
1042                         ;;
1043                 inet:alias:"":*)
1044                         _aliasn="$_aliasn inet $ifconfig_args"
1045                         warn "\$ifconfig_${_if}_alias${alias} needs " \
1046                             "\"inet\" keyword for an IPv4 address."
1047                 esac
1048                 alias=$(($alias + 1))
1049         done
1050
1051         # backward compatibility: ipv6_ifconfig_IF_aliasN.
1052         case $_af in
1053         inet6)
1054                 alias=0
1055                 while : ; do
1056                         ifconfig_args=`get_if_var $_if ipv6_ifconfig_IF_alias${alias}`
1057                         case ${_action}:"${ifconfig_args}" in
1058                         *:"")
1059                                 break
1060                         ;;
1061                         alias:*)
1062                                 _aliasn="${_aliasn} inet6 ${ifconfig_args}"
1063                                 warn "\$ipv6_ifconfig_${_if}_alias${alias} " \
1064                                     "is obsolete.  Use ifconfig_$1_aliasN " \
1065                                     "instead."
1066                         ;;
1067                         esac
1068                         alias=$(($alias + 1))
1069                 done
1070         esac
1071
1072         # backward compatibility: ipv4_addrs_IF.
1073         for _tmpargs in `get_if_var $_if ipv4_addrs_IF`; do
1074                 _aliasn="$_aliasn inet $_tmpargs"
1075         done
1076
1077         # Handle ifconfig_IF_aliases, ifconfig_IF_aliasN, and the others.
1078         _tmpargs=
1079         for _c in `get_if_var $_if ifconfig_IF_aliases` $_aliasn; do
1080                 case $_c in
1081                 inet|inet6|ipx|link|ether)
1082                         case $_tmpargs in
1083                         ${_af}\ *)
1084                                 eval ifalias_af_common_handler $_if $_af $_action $_tmpargs && _ret=0
1085                         ;;
1086                         esac
1087                         _tmpargs=$_c
1088                 ;;
1089                 *)
1090                         _tmpargs="$_tmpargs $_c"
1091                 esac
1092         done
1093         # Process the last component
1094         case $_tmpargs in
1095         ${_af}\ *)
1096                 ifalias_af_common_handler $_if $_af $_action $_tmpargs && _ret=0
1097         ;;
1098         esac
1099
1100         return $_ret
1101 }
1102
1103 # ipv6_prefix_hostid_addr_common if action
1104 #       Add or remove IPv6 prefix + hostid addr on the interface $if
1105 #
1106 ipv6_prefix_hostid_addr_common()
1107 {
1108         local _if _action prefix j
1109         _if=$1
1110         _action=$2
1111         prefix=`get_if_var ${_if} ipv6_prefix_IF`
1112
1113         if [ -n "${prefix}" ]; then
1114                 for j in ${prefix}; do
1115                         # The default prefixlen is 64.
1116                         plen=${j#*/}
1117                         case $j:$plen in
1118                         $plen:$j)       plen=64 ;;
1119                         *)              j=${j%/*} ;;
1120                         esac
1121
1122                         # Normalize the last part by removing ":"
1123                         j=${j%::*}
1124                         j=${j%:}
1125                         ${IFCONFIG_CMD} ${_if} inet6 $j:: \
1126                                 prefixlen $plen eui64 ${_action}
1127
1128                         # if I am a router, add subnet router
1129                         # anycast address (RFC 2373).
1130                         if checkyesno ipv6_gateway_enable; then
1131                                 ${IFCONFIG_CMD} ${_if} inet6 $j:: \
1132                                         prefixlen $plen ${_action} anycast
1133                         fi
1134                 done
1135         fi
1136 }
1137
1138 # ipv6_accept_rtadv_up if
1139 #       Enable accepting Router Advertisement and send Router
1140 #       Solicitation message
1141 ipv6_accept_rtadv_up()
1142 {
1143         if ipv6_autoconfif $1; then
1144                 ${IFCONFIG_CMD} $1 inet6 accept_rtadv up
1145                 if ! checkyesno rtsold_enable; then
1146                         rtsol ${rtsol_flags} $1
1147                 fi
1148         fi
1149 }
1150
1151 # ipv6_accept_rtadv_down if
1152 #       Disable accepting Router Advertisement
1153 ipv6_accept_rtadv_down()
1154 {
1155         if ipv6_autoconfif $1; then
1156                 ${IFCONFIG_CMD} $1 inet6 -accept_rtadv
1157         fi
1158 }
1159
1160 # ifscript_up if
1161 #       Evaluate a startup script for the $if interface.
1162 #       It returns 0 if a script was found and processed or
1163 #       1 if no script was found.
1164 #
1165 ifscript_up()
1166 {
1167         if [ -r /etc/start_if.$1 ]; then
1168                 . /etc/start_if.$1
1169                 return 0
1170         else
1171                 return 1
1172         fi
1173 }
1174
1175 # ifscript_down if
1176 #       Evaluate a shutdown script for the $if interface.
1177 #       It returns 0 if a script was found and processed or
1178 #       1 if no script was found.
1179 #
1180 ifscript_down()
1181 {
1182         if [ -r /etc/stop_if.$1 ]; then
1183                 . /etc/stop_if.$1
1184                 return 0
1185         else
1186                 return 1
1187         fi
1188 }
1189
1190 # clone_up
1191 #       Create cloneable interfaces.
1192 #
1193 clone_up()
1194 {
1195         local _prefix _list ifn
1196         _prefix=
1197         _list=
1198
1199         # create_args_IF
1200         for ifn in ${cloned_interfaces}; do
1201                 ${IFCONFIG_CMD} ${ifn} create `get_if_var ${ifn} create_args_IF`
1202                 if [ $? -eq 0 ]; then
1203                         _list="${_list}${_prefix}${ifn}"
1204                         [ -z "$_prefix" ] && _prefix=' '
1205                 fi
1206         done
1207         debug "Cloned: ${_list}"
1208 }
1209
1210 # clone_down
1211 #       Destroy cloned interfaces. Destroyed interfaces are echoed to
1212 #       standard output.
1213 #
1214 clone_down()
1215 {
1216         local _prefix _list ifn
1217         _prefix=
1218         _list=
1219
1220         for ifn in ${cloned_interfaces}; do
1221                 ${IFCONFIG_CMD} -n ${ifn} destroy
1222                 if [ $? -eq 0 ]; then
1223                         _list="${_list}${_prefix}${ifn}"
1224                         [ -z "$_prefix" ] && _prefix=' '
1225                 fi
1226         done
1227         debug "Destroyed clones: ${_list}"
1228 }
1229
1230 # childif_create
1231 #       Create and configure child interfaces.  Return 0 if child
1232 #       interfaces are created.
1233 #
1234 childif_create()
1235 {
1236         local cfg child child_vlans child_wlans create_args debug_flags ifn i
1237         cfg=1
1238         ifn=$1
1239
1240         # Create wireless interfaces
1241         child_wlans=`get_if_var $ifn wlans_IF`
1242
1243         for child in ${child_wlans}; do
1244                 create_args="wlandev $ifn `get_if_var $child create_args_IF`"
1245                 debug_flags="`get_if_var $child wlandebug_IF`"
1246
1247                 if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then
1248                         ${IFCONFIG_CMD} $child create ${create_args} && cfg=0
1249                         if [ -n "${debug_flags}" ]; then
1250                                 wlandebug -i $child ${debug_flags}
1251                         fi
1252                 else
1253                         i=`${IFCONFIG_CMD} wlan create ${create_args}`
1254                         if [ -n "${debug_flags}" ]; then
1255                                 wlandebug -i $i ${debug_flags}
1256                         fi
1257                         ${IFCONFIG_CMD} $i name $child && cfg=0
1258                 fi
1259                 if autoif $child; then
1260                         ifn_start $child
1261                 fi
1262         done
1263
1264         # Create vlan interfaces
1265         child_vlans=`get_if_var $ifn vlans_IF`
1266
1267         if [ -n "${child_vlans}" ]; then
1268                 load_kld if_vlan
1269         fi
1270
1271         for child in ${child_vlans}; do
1272                 if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then
1273                         child="${ifn}.${child}"
1274                         create_args=`get_if_var $child create_args_IF`
1275                         ${IFCONFIG_CMD} $child create ${create_args} && cfg=0
1276                 else
1277                         create_args="vlandev $ifn `get_if_var $child create_args_IF`"
1278                         if expr $child : 'vlan[0-9][0-9]*$' >/dev/null 2>&1; then
1279                                 ${IFCONFIG_CMD} $child create ${create_args} && cfg=0
1280                         else
1281                                 i=`${IFCONFIG_CMD} vlan create ${create_args}`
1282                                 ${IFCONFIG_CMD} $i name $child && cfg=0
1283                         fi
1284                 fi
1285                 if autoif $child; then
1286                         ifn_start $child
1287                 fi
1288         done
1289
1290         return ${cfg}
1291 }
1292
1293 # childif_destroy
1294 #       Destroy child interfaces.
1295 #
1296 childif_destroy()
1297 {
1298         local cfg child child_vlans child_wlans ifn
1299         cfg=1
1300
1301         child_wlans=`get_if_var $ifn wlans_IF`
1302         for child in ${child_wlans}; do
1303                 if ! ifexists $child; then
1304                         continue
1305                 fi
1306                 ${IFCONFIG_CMD} -n $child destroy && cfg=0
1307         done
1308
1309         child_vlans=`get_if_var $ifn vlans_IF`
1310         for child in ${child_vlans}; do
1311                 if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then
1312                         child="${ifn}.${child}"
1313                 fi
1314                 if ! ifexists $child; then
1315                         continue
1316                 fi
1317                 ${IFCONFIG_CMD} -n $child destroy && cfg=0
1318         done
1319
1320         return ${cfg}
1321 }
1322
1323 # ng_mkpeer
1324 #       Create netgraph nodes.
1325 #
1326 ng_mkpeer()
1327 {
1328         ngctl -f - 2> /dev/null <<EOF
1329 mkpeer $*
1330 msg dummy nodeinfo
1331 EOF
1332 }
1333
1334 # ng_create_one
1335 #       Create netgraph nodes.
1336 #
1337 ng_create_one()
1338 {
1339         local t
1340
1341         ng_mkpeer $* | while read line; do
1342                 t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'`
1343                 if [ -n "${t}" ]; then
1344                         echo ${t}
1345                         return
1346                 fi
1347         done
1348 }
1349
1350 # gif_up
1351 #       Create gif(4) tunnel interfaces.
1352 gif_up()
1353 {
1354         local i peers
1355
1356         for i in ${gif_interfaces}; do
1357                 peers=`get_if_var $i gifconfig_IF`
1358                 case ${peers} in
1359                 '')
1360                         continue
1361                         ;;
1362                 *)
1363                         if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then
1364                                 ${IFCONFIG_CMD} $i create >/dev/null 2>&1
1365                         else
1366                                 gif=`${IFCONFIG_CMD} gif create`
1367                                 ${IFCONFIG_CMD} $gif name $i
1368                         fi
1369                         ${IFCONFIG_CMD} $i tunnel ${peers}
1370                         ${IFCONFIG_CMD} $i up
1371                         ;;
1372                 esac
1373         done
1374 }
1375
1376 # ng_fec_create ifn
1377 #       Configure Fast EtherChannel for interface $ifn. Returns 0 if
1378 #       FEC arguments were found and configured; returns !0 otherwise.
1379 ng_fec_create()
1380 {
1381          local req_iface iface bogus
1382          req_iface="$1"
1383
1384          ngctl shutdown ${req_iface}: > /dev/null 2>&1
1385
1386          bogus=""
1387          while true; do
1388                  iface=`ng_create_one fec dummy fec`
1389                  if [ -z "${iface}" ]; then
1390                          exit 2
1391                  fi
1392                  if [ "${iface}" = "${req_iface}" ]; then
1393                          break
1394                  fi
1395                  bogus="${bogus} ${iface}"
1396          done
1397
1398          for iface in ${bogus}; do
1399                  ngctl shutdown ${iface}:
1400          done
1401 }
1402
1403 # fec_up
1404 #       Create Fast EtherChannel interfaces.
1405 fec_up()
1406 {
1407         local i j
1408
1409         for i in ${fec_interfaces}; do
1410                 ng_fec_create $i
1411                 for j in `get_if_var $i fecconfig_IF`; do
1412                         case ${j} in
1413                         '')
1414                                 continue
1415                                 ;;
1416                         *)
1417                                 ngctl msg ${i}: add_iface "\"${j}\""
1418                                 ;;
1419                         esac
1420                 done
1421         done
1422 }
1423
1424 # ipx_up ifn
1425 #       Configure any IPX addresses for interface $ifn. Returns 0 if
1426 #       IPX arguments were found and configured; returns 1 otherwise.
1427 #
1428 ipx_up()
1429 {
1430         local ifn
1431         ifn="$1"
1432
1433         # ifconfig_IF_ipx
1434         ifconfig_args=`_ifconfig_getargs $ifn ipx`
1435         if [ -n "${ifconfig_args}" ]; then
1436                 ${IFCONFIG_CMD} ${ifn} ${ifconfig_args}
1437                 return 0
1438         fi
1439
1440         return 1
1441 }
1442
1443 # ipx_down ifn
1444 #       Remove IPX addresses for interface $ifn. Returns 0 if IPX
1445 #       addresses were found and unconfigured. It returns 1, otherwise.
1446 #
1447 ipx_down()
1448 {
1449         local _if _ifs _ret ipxList oldifs _ipx
1450         _if=$1
1451         _ifs="^"
1452         _ret=1
1453         ipxList="`${IFCONFIG_CMD} ${_if} | grep 'ipx ' | tr "\n" "$_ifs"`"
1454         oldifs="$IFS"
1455
1456         IFS="$_ifs"
1457         for _ipx in $ipxList ; do
1458                 # get rid of extraneous line
1459                 [ -z "$_ipx" ] && break
1460
1461                 _ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'`
1462
1463                 IFS="$oldifs"
1464                 ${IFCONFIG_CMD} ${_if} ${_ipx} delete
1465                 IFS="$_ifs"
1466                 _ret=0
1467         done
1468         IFS="$oldifs"
1469
1470         return $_ret
1471 }
1472
1473 # ifnet_rename
1474 #       Rename all requested interfaces.
1475 #
1476 ifnet_rename()
1477 {
1478         local _if _ifname
1479
1480         # ifconfig_IF_name
1481         for _if in `${IFCONFIG_CMD} -l`; do
1482                 _ifname=`get_if_var $_if ifconfig_IF_name`
1483                 if [ ! -z "$_ifname" ]; then
1484                         ${IFCONFIG_CMD} $_if name $_ifname
1485                 fi
1486         done
1487
1488         return 0
1489 }
1490
1491 # list_net_interfaces type
1492 #       List all network interfaces. The type of interface returned
1493 #       can be controlled by the type argument. The type
1494 #       argument can be any of the following:
1495 #               nodhcp  - all interfaces, excluding DHCP configured interfaces
1496 #               dhcp    - list only DHCP configured interfaces
1497 #               noautoconf      - all interfaces, excluding IPv6 Stateless
1498 #                                 Address Autoconf configured interfaces
1499 #               autoconf        - list only IPv6 Stateless Address Autoconf
1500 #                                 configured interfaces
1501 #       If no argument is specified all network interfaces are output.
1502 #       Note that the list will include cloned interfaces if applicable.
1503 #       Cloned interfaces must already exist to have a chance to appear
1504 #       in the list if ${network_interfaces} is set to `auto'.
1505 #
1506 list_net_interfaces()
1507 {
1508         local type _tmplist _list _autolist _lo _if
1509         type=$1
1510
1511         # Get a list of ALL the interfaces and make lo0 first if it's there.
1512         #
1513         _tmplist=
1514         case ${network_interfaces} in
1515         [Aa][Uu][Tt][Oo])
1516                 _autolist="`${IFCONFIG_CMD} -l`"
1517                 _lo=
1518                 for _if in ${_autolist} ; do
1519                         if autoif $_if; then
1520                                 if [ "$_if" = "lo0" ]; then
1521                                         _lo="lo0 "
1522                                 else
1523                                         _tmplist="${_tmplist} ${_if}"
1524                                 fi
1525                         fi
1526                 done
1527                 _tmplist="${_lo}${_tmplist# }"
1528                 ;;
1529         *)
1530                 _tmplist="${network_interfaces} ${cloned_interfaces}"
1531
1532                 # lo0 is effectively mandatory, so help prevent foot-shooting
1533                 #
1534                 case "$_tmplist" in
1535                 lo0|'lo0 '*|*' lo0'|*' lo0 '*) ;; # This is fine, do nothing
1536                 *)      _tmplist="lo0 ${_tmplist}" ;;
1537                 esac
1538                 ;;
1539         esac
1540
1541         _list=
1542         case "$type" in
1543         nodhcp)
1544                 for _if in ${_tmplist} ; do
1545                         if ! dhcpif $_if && \
1546                            [ -n "`_ifconfig_getargs $_if`" ]; then
1547                                 _list="${_list# } ${_if}"
1548                         fi
1549                 done
1550                 ;;
1551         dhcp)
1552                 for _if in ${_tmplist} ; do
1553                         if dhcpif $_if; then
1554                                 _list="${_list# } ${_if}"
1555                         fi
1556                 done
1557                 ;;
1558         noautoconf)
1559                 for _if in ${_tmplist} ; do
1560                         if ! ipv6_autoconfif $_if && \
1561                            [ -n "`_ifconfig_getargs $_if ipv6`" ]; then
1562                                 _list="${_list# } ${_if}"
1563                         fi
1564                 done
1565                 ;;
1566         autoconf)
1567                 for _if in ${_tmplist} ; do
1568                         if ipv6_autoconfif $_if; then
1569                                 _list="${_list# } ${_if}"
1570                         fi
1571                 done
1572                 ;;
1573         *)
1574                 _list=${_tmplist}
1575                 ;;
1576         esac
1577
1578         echo $_list
1579
1580         return 0
1581 }
1582
1583 # get_default_if -address_family
1584 #       Get the interface of the default route for the given address family.
1585 #       The -address_family argument must be suitable passing to route(8).
1586 #
1587 get_default_if()
1588 {
1589         local routeget oldifs defif line
1590         defif=
1591         oldifs="$IFS"
1592         IFS="
1593 "
1594         for line in `route -n get $1 default 2>/dev/null`; do
1595                 case $line in
1596                 *interface:*)
1597                         defif=${line##*: }
1598                         ;;
1599                 esac
1600         done
1601         IFS=${oldifs}
1602
1603         echo $defif
1604 }
1605
1606 # hexdigit arg
1607 #       Echo decimal number $arg (single digit) in hexadecimal format.
1608 hexdigit()
1609 {
1610         printf '%x\n' "$1"
1611 }
1612
1613 # hexprint arg
1614 #       Echo decimal number $arg (multiple digits) in hexadecimal format.
1615 hexprint()
1616 {
1617         printf '%x\n' "$1"
1618 }
1619
1620 is_wired_interface()
1621 {
1622         local media
1623
1624         case `${IFCONFIG_CMD} $1 2>/dev/null` in
1625         *media:?Ethernet*) media=Ethernet ;;
1626         esac
1627
1628         test "$media" = "Ethernet"
1629 }
1630
1631 # network6_getladdr if [flag]
1632 #       Echo link-local address from $if if any.
1633 #       If flag is defined, tentative ones will be excluded.
1634 network6_getladdr()
1635 {
1636         local _if _flag proto addr rest
1637         _if=$1
1638         _flag=$2
1639
1640         ${IFCONFIG_CMD} $_if 2>/dev/null | while read proto addr rest; do
1641                 case "${proto}/${addr}/${_flag}/${rest}" in
1642                 inet6/fe80::*//*)
1643                         echo ${addr}
1644                 ;;
1645                 inet6/fe80:://*tentative*)      # w/o flag
1646                         sleep `${SYSCTL_N} net.inet6.ip6.dad_count`
1647                         network6_getladdr $_if $_flags
1648                 ;;
1649                 inet6/fe80::/*/*tentative*)     # w/ flag
1650                         echo ${addr}
1651                 ;;
1652                 *)
1653                         continue
1654                 ;;
1655                 esac
1656
1657                 return
1658         done
1659 }