network.subr revision 226649
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: head/etc/network.subr 226649 2011-10-23 05:56:59Z hrs $ 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 35# applied, print the interface configuration. 36# 37ifn_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 afexists inet && ipv4_up ${ifn} && cfg=0 48 afexists inet6 && ipv6_up ${ifn} && cfg=0 49 afexists ipx && ipx_up ${ifn} && cfg=0 50 childif_create ${ifn} && cfg=0 51 52 return $cfg 53} 54 55# ifn_stop ifn 56# Shutdown and de-configure an interface. If action is taken, 57# print the interface name. 58# 59ifn_stop() 60{ 61 local ifn cfg 62 ifn="$1" 63 cfg=1 64 65 [ -z "$ifn" ] && err 1 "ifn_stop called without an interface" 66 67 afexists ipx && ipx_down ${ifn} && cfg=0 68 afexists inet6 && ipv6_down ${ifn} && cfg=0 69 afexists inet && ipv4_down ${ifn} && cfg=0 70 ifconfig_down ${ifn} && cfg=0 71 ifscript_down ${ifn} && cfg=0 72 childif_destroy ${ifn} && cfg=0 73 74 return $cfg 75} 76 77# ifconfig_up if 78# Evaluate ifconfig(8) arguments for interface $if and 79# run ifconfig(8) with those arguments. It returns 0 if 80# arguments were found and executed or 1 if the interface 81# had no arguments. Pseudo arguments DHCP and WPA are handled 82# here. 83# 84ifconfig_up() 85{ 86 local _cfg _ipv6_opts ifconfig_args 87 _cfg=1 88 89 # Make sure lo0 always comes up. 90 if [ "$1" = "lo0" ]; then 91 _cfg=0 92 fi 93 94 # ifconfig_IF 95 ifconfig_args=`ifconfig_getargs $1` 96 if [ -n "${ifconfig_args}" ]; then 97 eval ifconfig $1 ${ifconfig_args} 98 _cfg=0 99 fi 100 101 # inet6 specific 102 if afexists inet6; then 103 if checkyesno ipv6_activate_all_interfaces; then 104 _ipv6_opts="-ifdisabled" 105 elif [ "$1" != "lo0" ]; then 106 _ipv6_opts="ifdisabled" 107 fi 108 109 # backward compatibility: $ipv6_enable 110 case $ipv6_enable in 111 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 112 _ipv6_opts="${_ipv6_opts} accept_rtadv" 113 ;; 114 esac 115 116 case $ipv6_cpe_wanif in 117 $1) 118 _ipv6_opts="${_ipv6_opts} -no_radr accept_rtadv" 119 ;; 120 esac 121 122 if [ -n "${_ipv6_opts}" ]; then 123 ifconfig $1 inet6 ${_ipv6_opts} 124 fi 125 126 # ifconfig_IF_ipv6 127 ifconfig_args=`ifconfig_getargs $1 ipv6` 128 if [ -n "${ifconfig_args}" ]; then 129 # backward compatibility: inet6 keyword 130 case "${ifconfig_args}" in 131 :*|[0-9a-fA-F]*:*) 132 warn "\$ifconfig_$1_ipv6 needs " \ 133 "\"inet6\" keyword for an IPv6 address." 134 ifconfig_args="inet6 ${ifconfig_args}" 135 ;; 136 esac 137 ifconfig $1 inet6 -ifdisabled 138 eval ifconfig $1 ${ifconfig_args} 139 _cfg=0 140 fi 141 142 # backward compatiblity: $ipv6_ifconfig_IF 143 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF` 144 if [ -n "${ifconfig_args}" ]; then 145 warn "\$ipv6_ifconfig_$1 is obsolete." \ 146 " Use ifconfig_$1_ipv6 instead." 147 ifconfig $1 inet6 -ifdisabled 148 eval ifconfig $1 inet6 ${ifconfig_args} 149 _cfg=0 150 fi 151 fi 152 153 if [ ${_cfg} -eq 0 ]; then 154 ifconfig $1 up 155 fi 156 157 if wpaif $1; then 158 /etc/rc.d/wpa_supplicant start $1 159 _cfg=0 # XXX: not sure this should count 160 fi 161 162 if dhcpif $1; then 163 if [ $_cfg -ne 0 ] ; then 164 ifconfig $1 up 165 fi 166 if syncdhcpif $1; then 167 /etc/rc.d/dhclient start $1 168 fi 169 _cfg=0 170 fi 171 172 return $_cfg 173} 174 175# ifconfig_down if 176# returns 1 if wpa_supplicant or dhclient was stopped or 177# the interface exists. 178# 179ifconfig_down() 180{ 181 local _cfg 182 _cfg=1 183 184 if wpaif $1; then 185 /etc/rc.d/wpa_supplicant stop $1 186 _cfg=0 187 fi 188 189 if dhcpif $1; then 190 /etc/rc.d/dhclient stop $1 191 _cfg=0 192 fi 193 194 if ifexists $1; then 195 ifconfig $1 down 196 _cfg=0 197 fi 198 199 return $_cfg 200} 201 202# get_if_var if var [default] 203# Return the value of the pseudo-hash corresponding to $if where 204# $var is a string containg the sub-string "IF" which will be 205# replaced with $if after the characters defined in _punct are 206# replaced with '_'. If the variable is unset, replace it with 207# $default if given. 208get_if_var() 209{ 210 local _if _punct _punct_c _var _default prefix suffix 211 212 if [ $# -ne 2 -a $# -ne 3 ]; then 213 err 3 'USAGE: get_if_var name var [default]' 214 fi 215 216 _if=$1 217 _punct=". - / +" 218 for _punct_c in $_punct; do 219 _if=`ltr ${_if} ${_punct_c} '_'` 220 done 221 _var=$2 222 _default=$3 223 224 prefix=${_var%%IF*} 225 suffix=${_var##*IF} 226 eval echo \${${prefix}${_if}${suffix}-${_default}} 227} 228 229# _ifconfig_getargs if [af] 230# Prints the arguments for the supplied interface to stdout. 231# Returns 1 if empty. In general, ifconfig_getargs should be used 232# outside this file. 233_ifconfig_getargs() 234{ 235 local _ifn _af 236 _ifn=$1 237 _af=${2+_$2} 238 239 if [ -z "$_ifn" ]; then 240 return 1 241 fi 242 243 get_if_var $_ifn ifconfig_IF$_af "$ifconfig_DEFAULT" 244} 245 246# ifconfig_getargs if [af] 247# Takes the result from _ifconfig_getargs and removes pseudo 248# args such as DHCP and WPA. 249ifconfig_getargs() 250{ 251 local _tmpargs _arg _args 252 _tmpargs=`_ifconfig_getargs $1 $2` 253 if [ $? -eq 1 ]; then 254 return 1 255 fi 256 _args= 257 258 for _arg in $_tmpargs; do 259 case $_arg in 260 [Dd][Hh][Cc][Pp]) ;; 261 [Nn][Oo][Aa][Uu][Tt][Oo]) ;; 262 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;; 263 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;; 264 [Ww][Pp][Aa]) ;; 265 *) 266 _args="$_args $_arg" 267 ;; 268 esac 269 done 270 271 echo $_args 272} 273 274# autoif 275# Returns 0 if the interface should be automatically configured at 276# boot time and 1 otherwise. 277autoif() 278{ 279 local _tmpargs _arg 280 _tmpargs=`_ifconfig_getargs $1` 281 282 for _arg in $_tmpargs; do 283 case $_arg in 284 [Nn][Oo][Aa][Uu][Tt][Oo]) 285 return 1 286 ;; 287 esac 288 done 289 290 return 0 291} 292 293# dhcpif if 294# Returns 0 if the interface is a DHCP interface and 1 otherwise. 295dhcpif() 296{ 297 local _tmpargs _arg 298 _tmpargs=`_ifconfig_getargs $1` 299 300 if noafif $1; then 301 return 1 302 fi 303 304 for _arg in $_tmpargs; do 305 case $_arg in 306 [Dd][Hh][Cc][Pp]) 307 return 0 308 ;; 309 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 310 return 0 311 ;; 312 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 313 return 0 314 ;; 315 esac 316 done 317 318 return 1 319} 320 321# syncdhcpif 322# Returns 0 if the interface should be configured synchronously and 323# 1 otherwise. 324syncdhcpif() 325{ 326 local _tmpargs _arg 327 _tmpargs=`_ifconfig_getargs $1` 328 329 if noafif $1; then 330 return 1 331 fi 332 333 for _arg in $_tmpargs; do 334 case $_arg in 335 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 336 return 1 337 ;; 338 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 339 return 0 340 ;; 341 esac 342 done 343 344 checkyesno synchronous_dhclient 345} 346 347# wpaif if 348# Returns 0 if the interface is a WPA interface and 1 otherwise. 349wpaif() 350{ 351 local _tmpargs _arg 352 _tmpargs=`_ifconfig_getargs $1` 353 354 for _arg in $_tmpargs; do 355 case $_arg in 356 [Ww][Pp][Aa]) 357 return 0 358 ;; 359 esac 360 done 361 362 return 1 363} 364 365# afexists af 366# Returns 0 if the address family is enabled in the kernel 367# 1 otherwise. 368afexists() 369{ 370 local _af 371 _af=$1 372 373 case ${_af} in 374 inet|inet6) 375 check_kern_features ${_af} 376 ;; 377 ipx) 378 ${SYSCTL_N} net.ipx > /dev/null 2>&1 379 ;; 380 atm) 381 if [ -x /sbin/atmconfig ]; then 382 /sbin/atmconfig diag list > /dev/null 2>&1 383 else 384 return 1 385 fi 386 ;; 387 *) 388 err 1 "afexists(): Unsupported address family: $_af" 389 ;; 390 esac 391} 392 393# noafif if 394# Returns 0 if the interface has no af configuration and 1 otherwise. 395noafif() 396{ 397 local _if 398 _if=$1 399 400 case $_if in 401 pflog[0-9]*|\ 402 pfsync[0-9]*|\ 403 an[0-9]*|\ 404 ath[0-9]*|\ 405 ipw[0-9]*|\ 406 ipfw[0-9]*|\ 407 iwi[0-9]*|\ 408 iwn[0-9]*|\ 409 ral[0-9]*|\ 410 wi[0-9]*|\ 411 wl[0-9]*|\ 412 wpi[0-9]*) 413 return 0 414 ;; 415 esac 416 417 return 1 418} 419 420# ipv6if if 421# Returns 0 if the interface should be configured for IPv6 and 422# 1 otherwise. 423ipv6if() 424{ 425 local _if _tmpargs i 426 _if=$1 427 428 if ! afexists inet6; then 429 return 1 430 fi 431 432 # lo0 is always IPv6-enabled 433 case $_if in 434 lo0) 435 return 0 436 ;; 437 esac 438 439 case "${ipv6_network_interfaces}" in 440 $_if|"$_if "*|*" $_if"|*" $_if "*|[Aa][Uu][Tt][Oo]) 441 # True if $ifconfig_IF_ipv6 is defined. 442 _tmpargs=`_ifconfig_getargs $_if ipv6` 443 if [ -n "${_tmpargs}" ]; then 444 return 0 445 fi 446 447 # backward compatibility: True if $ipv6_ifconfig_IF is defined. 448 _tmpargs=`get_if_var $_if ipv6_ifconfig_IF` 449 if [ -n "${_tmpargs}" ]; then 450 return 0 451 fi 452 ;; 453 esac 454 455 return 1 456} 457 458# ipv6_autoconfif if 459# Returns 0 if the interface should be configured for IPv6 with 460# Stateless Address Configuration; 1 otherwise. 461ipv6_autoconfif() 462{ 463 local _if _tmpargs _arg 464 _if=$1 465 466 case $_if in 467 lo0|\ 468 stf[0-9]*|\ 469 faith[0-9]*|\ 470 lp[0-9]*|\ 471 sl[0-9]*) 472 return 1 473 ;; 474 esac 475 if noafif $_if; then 476 return 1 477 fi 478 if ! ipv6if $_if; then 479 return 1 480 fi 481 if checkyesno ipv6_gateway_enable; then 482 return 1 483 fi 484 _tmpargs=`get_if_var $_if ipv6_prefix_IF` 485 if [ -n "${_tmpargs}" ]; then 486 return 1 487 fi 488 # backward compatibility: $ipv6_enable 489 case $ipv6_enable in 490 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 491 return 0 492 ;; 493 esac 494 495 _tmpargs=`_ifconfig_getargs $_if ipv6` 496 for _arg in $_tmpargs; do 497 case $_arg in 498 accept_rtadv) 499 return 0 500 ;; 501 esac 502 done 503 504 # backward compatibility: $ipv6_ifconfig_IF 505 _tmpargs=`get_if_var $_if ipv6_ifconfig_IF` 506 for _arg in $_tmpargs; do 507 case $_arg in 508 accept_rtadv) 509 return 0 510 ;; 511 esac 512 done 513 514 return 1 515} 516 517# ifexists if 518# Returns 0 if the interface exists and 1 otherwise. 519ifexists() 520{ 521 [ -z "$1" ] && return 1 522 ifconfig -n $1 > /dev/null 2>&1 523} 524 525# ipv4_up if 526# add IPv4 addresses to the interface $if 527ipv4_up() 528{ 529 local _if _ret 530 _if=$1 531 _ret=1 532 533 # Add 127.0.0.1/8 to lo0 unless otherwise specified. 534 if [ "${_if}" = "lo0" ]; then 535 ifconfig_args=`get_if_var ${_if} ifconfig_IF` 536 if [ -z "${ifconfig_args}" ]; then 537 ifconfig ${_if} inet 127.0.0.1/8 alias 538 fi 539 fi 540 ifalias_up ${_if} inet && _ret=0 541 ipv4_addrs_common ${_if} alias && _ret=0 542 543 return $_ret 544} 545 546# ipv6_up if 547# add IPv6 addresses to the interface $if 548ipv6_up() 549{ 550 local _if _ret 551 _if=$1 552 _ret=1 553 554 if ! ipv6if $_if; then 555 return 0 556 fi 557 558 ifalias_up ${_if} inet6 && _ret=0 559 ipv6_prefix_hostid_addr_up ${_if} && _ret=0 560 ipv6_accept_rtadv_up ${_if} && _ret=0 561 562 # wait for DAD 563 sleep `${SYSCTL_N} net.inet6.ip6.dad_count` 564 sleep 1 565 566 return $_ret 567} 568 569# ipv4_down if 570# remove IPv4 addresses from the interface $if 571ipv4_down() 572{ 573 local _if _ifs _ret inetList oldifs _inet 574 _if=$1 575 _ifs="^" 576 _ret=1 577 578 inetList="`ifconfig ${_if} | grep 'inet ' | tr "\n" "$_ifs"`" 579 580 oldifs="$IFS" 581 IFS="$_ifs" 582 for _inet in $inetList ; do 583 # get rid of extraneous line 584 [ -z "$_inet" ] && break 585 586 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'` 587 588 IFS="$oldifs" 589 ifconfig ${_if} ${_inet} delete 590 IFS="$_ifs" 591 _ret=0 592 done 593 IFS="$oldifs" 594 595 ifalias_down ${_if} inet && _ret=0 596 ipv4_addrs_common ${_if} -alias && _ret=0 597 598 return $_ret 599} 600 601# ipv6_down if 602# remove IPv6 addresses from the interface $if 603ipv6_down() 604{ 605 local _if _ifs _ret inetList oldifs _inet6 606 _if=$1 607 _ifs="^" 608 _ret=1 609 610 if ! ipv6if $_if; then 611 return 0 612 fi 613 614 ipv6_accept_rtadv_down ${_if} && _ret=0 615 ifalias_down ${_if} inet6 && _ret=0 616 617 inetList="`ifconfig ${_if} | grep 'inet6 ' | tr "\n" "$_ifs"`" 618 619 oldifs="$IFS" 620 IFS="$_ifs" 621 for _inet6 in $inetList ; do 622 # get rid of extraneous line 623 [ -z "$_inet6" ] && break 624 625 _inet6=`expr "$_inet6" : '.*\(inet6 \([0-9a-f:]*\)\).*'` 626 627 IFS="$oldifs" 628 ifconfig ${_if} ${_inet6} -alias 629 IFS="$_ifs" 630 _ret=0 631 done 632 IFS="$oldifs" 633 634 return $_ret 635} 636 637# ipv4_addrs_common if action 638# Evaluate the ifconfig_if_ipv4 arguments for interface $if and 639# use $action to add or remove IPv4 addresses from $if. 640ipv4_addrs_common() 641{ 642 local _ret _if _action _cidr _cidr_addr 643 local _ipaddr _netmask _range _ipnet _iplow _iphigh _ipcount 644 _ret=1 645 _if=$1 646 _action=$2 647 648 # get ipv4-addresses 649 cidr_addr=`get_if_var $_if ipv4_addrs_IF` 650 651 for _cidr in ${cidr_addr}; do 652 _ipaddr=${_cidr%%/*} 653 _netmask="/"${_cidr##*/} 654 _range=${_ipaddr##*.} 655 _ipnet=${_ipaddr%.*} 656 _iplow=${_range%-*} 657 _iphigh=${_range#*-} 658 659 # clear netmask when removing aliases 660 if [ "${_action}" = "-alias" ]; then 661 _netmask="" 662 fi 663 664 _ipcount=${_iplow} 665 while [ "${_ipcount}" -le "${_iphigh}" ]; do 666 eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}" 667 _ipcount=$((${_ipcount}+1)) 668 _ret=0 669 670 # only the first ipaddr in a subnet need the real netmask 671 if [ "${_action}" != "-alias" ]; then 672 _netmask="/32" 673 fi 674 done 675 done 676 677 return $_ret 678} 679 680# ifalias_up if af 681# Configure aliases for network interface $if. 682# It returns 0 if at least one alias was configured or 683# 1 if there were none. 684# 685ifalias_up() 686{ 687 local _ret 688 _ret=1 689 690 case "$2" in 691 inet) 692 _ret=`ifalias_ipv4_up "$1"` 693 ;; 694 inet6) 695 _ret=`ifalias_ipv6_up "$1"` 696 ;; 697 esac 698 699 return $_ret 700} 701 702# ifalias_ipv4_up if 703# Helper function for ifalias_up(). Handles IPv4. 704# 705ifalias_ipv4_up() 706{ 707 local _ret alias ifconfig_args 708 _ret=1 709 710 # ifconfig_IF_aliasN which starts with "inet" 711 alias=0 712 while : ; do 713 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 714 case "${ifconfig_args}" in 715 inet\ *) 716 ifconfig $1 ${ifconfig_args} alias && _ret=0 717 ;; 718 "") 719 break 720 ;; 721 esac 722 alias=$((${alias} + 1)) 723 done 724 725 return $_ret 726} 727 728# ifalias_ipv6_up if 729# Helper function for ifalias_up(). Handles IPv6. 730# 731ifalias_ipv6_up() 732{ 733 local _ret alias ifconfig_args 734 _ret=1 735 736 # ifconfig_IF_aliasN which starts with "inet6" 737 alias=0 738 while : ; do 739 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 740 case "${ifconfig_args}" in 741 inet6\ *) 742 ifconfig $1 ${ifconfig_args} alias && _ret=0 743 ;; 744 "") 745 break 746 ;; 747 esac 748 alias=$((${alias} + 1)) 749 done 750 751 # backward compatibility: ipv6_ifconfig_IF_aliasN. 752 alias=0 753 while : ; do 754 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}` 755 case "${ifconfig_args}" in 756 "") 757 break 758 ;; 759 *) 760 ifconfig $1 inet6 ${ifconfig_args} alias && _ret=0 761 warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \ 762 " Use ifconfig_$1_aliasN instead." 763 ;; 764 esac 765 alias=$((${alias} + 1)) 766 done 767 768 return $_ret 769} 770 771# ifalias_down if af 772# Remove aliases for network interface $if. 773# It returns 0 if at least one alias was removed or 774# 1 if there were none. 775# 776ifalias_down() 777{ 778 local _ret 779 _ret=1 780 781 case "$2" in 782 inet) 783 _ret=`ifalias_ipv4_down "$1"` 784 ;; 785 inet6) 786 _ret=`ifalias_ipv6_down "$1"` 787 ;; 788 esac 789 790 return $_ret 791} 792 793# ifalias_ipv4_down if 794# Helper function for ifalias_down(). Handles IPv4. 795# 796ifalias_ipv4_down() 797{ 798 local _ret alias ifconfig_args 799 _ret=1 800 801 # ifconfig_IF_aliasN which starts with "inet" 802 alias=0 803 while : ; do 804 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 805 case "${ifconfig_args}" in 806 inet\ *) 807 ifconfig $1 ${ifconfig_args} -alias && _ret=0 808 ;; 809 "") 810 break 811 ;; 812 esac 813 alias=$((${alias} + 1)) 814 done 815 816 return $_ret 817} 818 819# ifalias_ipv6_down if 820# Helper function for ifalias_down(). Handles IPv6. 821# 822ifalias_ipv6_down() 823{ 824 local _ret alias ifconfig_args 825 _ret=1 826 827 # ifconfig_IF_aliasN which starts with "inet6" 828 alias=0 829 while : ; do 830 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 831 case "${ifconfig_args}" in 832 inet6\ *) 833 ifconfig $1 ${ifconfig_args} -alias && _ret=0 834 ;; 835 "") 836 break 837 ;; 838 esac 839 alias=$((${alias} + 1)) 840 done 841 842 # backward compatibility: ipv6_ifconfig_IF_aliasN. 843 alias=0 844 while : ; do 845 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}` 846 case "${ifconfig_args}" in 847 "") 848 break 849 ;; 850 *) 851 ifconfig $1 inet6 ${ifconfig_args} -alias && _ret=0 852 warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \ 853 " Use ifconfig_$1_aliasN instead." 854 ;; 855 esac 856 alias=$((${alias} + 1)) 857 done 858 859 return $_ret 860} 861 862# ipv6_prefix_hostid_addr_up if 863# add IPv6 prefix + hostid addr to the interface $if 864ipv6_prefix_hostid_addr_up() 865{ 866 local _if prefix laddr hostid j address 867 _if=$1 868 prefix=`get_if_var ${_if} ipv6_prefix_IF` 869 870 if [ -n "${prefix}" ]; then 871 laddr=`network6_getladdr ${_if}` 872 hostid=${laddr#fe80::} 873 hostid=${hostid%\%*} 874 875 for j in ${prefix}; do 876 address=$j\:${hostid} 877 ifconfig ${_if} inet6 ${address} prefixlen 64 alias 878 879 # if I am a router, add subnet router 880 # anycast address (RFC 2373). 881 if checkyesno ipv6_gateway_enable; then 882 ifconfig ${_if} inet6 $j:: prefixlen 64 \ 883 alias anycast 884 fi 885 done 886 fi 887} 888 889# ipv6_accept_rtadv_up if 890# Enable accepting Router Advertisement and send Router 891# Solicitation message 892ipv6_accept_rtadv_up() 893{ 894 if ipv6_autoconfif $1; then 895 ifconfig $1 inet6 accept_rtadv up 896 if ! checkyesno rtsold_enable; then 897 rtsol ${rtsol_flags} $1 898 fi 899 fi 900} 901 902# ipv6_accept_rtadv_down if 903# Disable accepting Router Advertisement 904ipv6_accept_rtadv_down() 905{ 906 if ipv6_autoconfif $1; then 907 ifconfig $1 inet6 -accept_rtadv 908 fi 909} 910 911# ifscript_up if 912# Evaluate a startup script for the $if interface. 913# It returns 0 if a script was found and processed or 914# 1 if no script was found. 915# 916ifscript_up() 917{ 918 if [ -r /etc/start_if.$1 ]; then 919 . /etc/start_if.$1 920 return 0 921 else 922 return 1 923 fi 924} 925 926# ifscript_down if 927# Evaluate a shutdown script for the $if interface. 928# It returns 0 if a script was found and processed or 929# 1 if no script was found. 930# 931ifscript_down() 932{ 933 if [ -r /etc/stop_if.$1 ]; then 934 . /etc/stop_if.$1 935 return 0 936 else 937 return 1 938 fi 939} 940 941# clone_up 942# Create cloneable interfaces. 943# 944clone_up() 945{ 946 local _prefix _list ifn 947 _prefix= 948 _list= 949 950 # create_args_IF 951 for ifn in ${cloned_interfaces}; do 952 ifconfig ${ifn} create `get_if_var ${ifn} create_args_IF` 953 if [ $? -eq 0 ]; then 954 _list="${_list}${_prefix}${ifn}" 955 [ -z "$_prefix" ] && _prefix=' ' 956 fi 957 done 958 debug "Cloned: ${_list}" 959} 960 961# clone_down 962# Destroy cloned interfaces. Destroyed interfaces are echoed to 963# standard output. 964# 965clone_down() 966{ 967 local _prefix _list ifn 968 _prefix= 969 _list= 970 971 for ifn in ${cloned_interfaces}; do 972 ifconfig -n ${ifn} destroy 973 if [ $? -eq 0 ]; then 974 _list="${_list}${_prefix}${ifn}" 975 [ -z "$_prefix" ] && _prefix=' ' 976 fi 977 done 978 debug "Destroyed clones: ${_list}" 979} 980 981# childif_create 982# Create and configure child interfaces. Return 0 if child 983# interfaces are created. 984# 985childif_create() 986{ 987 local cfg child child_vlans child_wlans create_args debug_flags ifn i 988 cfg=1 989 ifn=$1 990 991 # Create wireless interfaces 992 child_wlans=`get_if_var $ifn wlans_IF` 993 994 for child in ${child_wlans}; do 995 create_args="wlandev $ifn `get_if_var $child create_args_IF`" 996 debug_flags="`get_if_var $child wlandebug_IF`" 997 998 if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then 999 ifconfig $child create ${create_args} && cfg=0 1000 if [ -n "${debug_flags}" ]; then 1001 wlandebug -i $child ${debug_flags} 1002 fi 1003 else 1004 i=`ifconfig wlan create ${create_args}` 1005 if [ -n "${debug_flags}" ]; then 1006 wlandebug -i $i ${debug_flags} 1007 fi 1008 ifconfig $i name $child && cfg=0 1009 fi 1010 if autoif $child; then 1011 ifn_start $child 1012 fi 1013 done 1014 1015 # Create vlan interfaces 1016 child_vlans=`get_if_var $ifn vlans_IF` 1017 1018 if [ -n "${child_vlans}" ]; then 1019 load_kld if_vlan 1020 fi 1021 1022 for child in ${child_vlans}; do 1023 if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then 1024 child="${ifn}.${child}" 1025 create_args=`get_if_var $child create_args_IF` 1026 ifconfig $child create ${create_args} && cfg=0 1027 else 1028 create_args="vlandev $ifn `get_if_var $child create_args_IF`" 1029 if expr $child : 'vlan[0-9][0-9]*$' >/dev/null 2>&1; then 1030 ifconfig $child create ${create_args} && cfg=0 1031 else 1032 i=`ifconfig vlan create ${create_args}` 1033 ifconfig $i name $child && cfg=0 1034 fi 1035 fi 1036 if autoif $child; then 1037 ifn_start $child 1038 fi 1039 done 1040 1041 return ${cfg} 1042} 1043 1044# childif_destroy 1045# Destroy child interfaces. 1046# 1047childif_destroy() 1048{ 1049 local cfg child child_vlans child_wlans ifn 1050 cfg=1 1051 1052 child_wlans=`get_if_var $ifn wlans_IF` 1053 for child in ${child_wlans}; do 1054 if ! ifexists $child; then 1055 continue 1056 fi 1057 ifconfig -n $child destroy && cfg=0 1058 done 1059 1060 child_vlans=`get_if_var $ifn vlans_IF` 1061 for child in ${child_vlans}; do 1062 if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then 1063 child="${ifn}.${child}" 1064 fi 1065 if ! ifexists $child; then 1066 continue 1067 fi 1068 ifconfig -n $child destroy && cfg=0 1069 done 1070 1071 return ${cfg} 1072} 1073 1074# ng_mkpeer 1075# Create netgraph nodes. 1076# 1077ng_mkpeer() 1078{ 1079 ngctl -f - 2> /dev/null <<EOF 1080mkpeer $* 1081msg dummy nodeinfo 1082EOF 1083} 1084 1085# ng_create_one 1086# Create netgraph nodes. 1087# 1088ng_create_one() 1089{ 1090 local t 1091 1092 ng_mkpeer $* | while read line; do 1093 t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'` 1094 if [ -n "${t}" ]; then 1095 echo ${t} 1096 return 1097 fi 1098 done 1099} 1100 1101# gif_up 1102# Create gif(4) tunnel interfaces. 1103gif_up() 1104{ 1105 local i peers 1106 1107 for i in ${gif_interfaces}; do 1108 peers=`get_if_var $i gifconfig_IF` 1109 case ${peers} in 1110 '') 1111 continue 1112 ;; 1113 *) 1114 if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then 1115 ifconfig $i create >/dev/null 2>&1 1116 else 1117 gif=`ifconfig gif create` 1118 ifconfig $gif name $i 1119 fi 1120 ifconfig $i tunnel ${peers} 1121 ifconfig $i up 1122 ;; 1123 esac 1124 done 1125} 1126 1127# ng_fec_create ifn 1128# Configure Fast EtherChannel for interface $ifn. Returns 0 if 1129# FEC arguments were found and configured; returns !0 otherwise. 1130ng_fec_create() 1131{ 1132 local req_iface iface bogus 1133 req_iface="$1" 1134 1135 ngctl shutdown ${req_iface}: > /dev/null 2>&1 1136 1137 bogus="" 1138 while true; do 1139 iface=`ng_create_one fec dummy fec` 1140 if [ -z "${iface}" ]; then 1141 exit 2 1142 fi 1143 if [ "${iface}" = "${req_iface}" ]; then 1144 break 1145 fi 1146 bogus="${bogus} ${iface}" 1147 done 1148 1149 for iface in ${bogus}; do 1150 ngctl shutdown ${iface}: 1151 done 1152} 1153 1154# fec_up 1155# Create Fast EtherChannel interfaces. 1156fec_up() 1157{ 1158 local i j 1159 1160 for i in ${fec_interfaces}; do 1161 ng_fec_create $i 1162 for j in `get_if_var $i fecconfig_IF`; do 1163 case ${j} in 1164 '') 1165 continue 1166 ;; 1167 *) 1168 ngctl msg ${i}: add_iface "\"${j}\"" 1169 ;; 1170 esac 1171 done 1172 done 1173} 1174 1175# ipx_up ifn 1176# Configure any IPX addresses for interface $ifn. Returns 0 if 1177# IPX arguments were found and configured; returns 1 otherwise. 1178# 1179ipx_up() 1180{ 1181 local ifn 1182 ifn="$1" 1183 1184 # ifconfig_IF_ipx 1185 ifconfig_args=`_ifconfig_getargs $ifn ipx` 1186 if [ -n "${ifconfig_args}" ]; then 1187 ifconfig ${ifn} ${ifconfig_args} 1188 return 0 1189 fi 1190 1191 return 1 1192} 1193 1194# ipx_down ifn 1195# Remove IPX addresses for interface $ifn. Returns 0 if IPX 1196# addresses were found and unconfigured. It returns 1, otherwise. 1197# 1198ipx_down() 1199{ 1200 local _if _ifs _ret ipxList oldifs _ipx 1201 _if=$1 1202 _ifs="^" 1203 _ret=1 1204 ipxList="`ifconfig ${_if} | grep 'ipx ' | tr "\n" "$_ifs"`" 1205 oldifs="$IFS" 1206 1207 IFS="$_ifs" 1208 for _ipx in $ipxList ; do 1209 # get rid of extraneous line 1210 [ -z "$_ipx" ] && break 1211 1212 _ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'` 1213 1214 IFS="$oldifs" 1215 ifconfig ${_if} ${_ipx} delete 1216 IFS="$_ifs" 1217 _ret=0 1218 done 1219 IFS="$oldifs" 1220 1221 return $_ret 1222} 1223 1224# ifnet_rename 1225# Rename all requested interfaces. 1226# 1227ifnet_rename() 1228{ 1229 local _if _ifname 1230 1231 # ifconfig_IF_name 1232 for _if in `ifconfig -l`; do 1233 _ifname=`get_if_var $_if ifconfig_IF_name` 1234 if [ ! -z "$_ifname" ]; then 1235 ifconfig $_if name $_ifname 1236 fi 1237 done 1238 1239 return 0 1240} 1241 1242# list_net_interfaces type 1243# List all network interfaces. The type of interface returned 1244# can be controlled by the type argument. The type 1245# argument can be any of the following: 1246# nodhcp - all interfaces, excluding DHCP configured interfaces 1247# dhcp - list only DHCP configured interfaces 1248# noautoconf - all interfaces, excluding IPv6 Stateless 1249# Address Autoconf configured interfaces 1250# autoconf - list only IPv6 Stateless Address Autoconf 1251# configured interfaces 1252# If no argument is specified all network interfaces are output. 1253# Note that the list will include cloned interfaces if applicable. 1254# Cloned interfaces must already exist to have a chance to appear 1255# in the list if ${network_interfaces} is set to `auto'. 1256# 1257list_net_interfaces() 1258{ 1259 local type _tmplist _list _autolist _lo _if 1260 type=$1 1261 1262 # Get a list of ALL the interfaces and make lo0 first if it's there. 1263 # 1264 _tmplist= 1265 case ${network_interfaces} in 1266 [Aa][Uu][Tt][Oo]) 1267 _autolist="`ifconfig -l`" 1268 _lo= 1269 for _if in ${_autolist} ; do 1270 if autoif $_if; then 1271 if [ "$_if" = "lo0" ]; then 1272 _lo="lo0 " 1273 else 1274 _tmplist="${_tmplist} ${_if}" 1275 fi 1276 fi 1277 done 1278 _tmplist="${_lo}${_tmplist# }" 1279 ;; 1280 *) 1281 _tmplist="${network_interfaces} ${cloned_interfaces}" 1282 1283 # lo0 is effectively mandatory, so help prevent foot-shooting 1284 # 1285 case "$_tmplist" in 1286 lo0|'lo0 '*|*' lo0'|*' lo0 '*) ;; # This is fine, do nothing 1287 *) _tmplist="lo0 ${_tmplist}" ;; 1288 esac 1289 ;; 1290 esac 1291 1292 _list= 1293 case "$type" in 1294 nodhcp) 1295 for _if in ${_tmplist} ; do 1296 if ! dhcpif $_if && \ 1297 [ -n "`_ifconfig_getargs $_if`" ]; then 1298 _list="${_list# } ${_if}" 1299 fi 1300 done 1301 ;; 1302 dhcp) 1303 for _if in ${_tmplist} ; do 1304 if dhcpif $_if; then 1305 _list="${_list# } ${_if}" 1306 fi 1307 done 1308 ;; 1309 noautoconf) 1310 for _if in ${_tmplist} ; do 1311 if ! ipv6_autoconfif $_if && \ 1312 [ -n "`_ifconfig_getargs $_if ipv6`" ]; then 1313 _list="${_list# } ${_if}" 1314 fi 1315 done 1316 ;; 1317 autoconf) 1318 for _if in ${_tmplist} ; do 1319 if ipv6_autoconfif $_if; then 1320 _list="${_list# } ${_if}" 1321 fi 1322 done 1323 ;; 1324 *) 1325 _list=${_tmplist} 1326 ;; 1327 esac 1328 1329 echo $_list 1330 1331 return 0 1332} 1333 1334# get_default_if -address_family 1335# Get the interface of the default route for the given address family. 1336# The -address_family argument must be suitable passing to route(8). 1337# 1338get_default_if() 1339{ 1340 local routeget oldifs defif line 1341 defif= 1342 oldifs="$IFS" 1343 IFS=" 1344" 1345 for line in `route -n get $1 default 2>/dev/null`; do 1346 case $line in 1347 *interface:*) 1348 defif=${line##*: } 1349 ;; 1350 esac 1351 done 1352 IFS=${oldifs} 1353 1354 echo $defif 1355} 1356 1357# hexdigit arg 1358# Echo decimal number $arg (single digit) in hexadecimal format. 1359hexdigit() 1360{ 1361 printf '%x\n' "$1" 1362} 1363 1364# hexprint arg 1365# Echo decimal number $arg (multiple digits) in hexadecimal format. 1366hexprint() 1367{ 1368 printf '%x\n' "$1" 1369} 1370 1371is_wired_interface() 1372{ 1373 local media 1374 1375 case `ifconfig $1 2>/dev/null` in 1376 *media:?Ethernet*) media=Ethernet ;; 1377 esac 1378 1379 test "$media" = "Ethernet" 1380} 1381 1382# network6_getladdr if [flag] 1383# Echo link-local address from $if if any. 1384# If flag is defined, tentative ones will be excluded. 1385network6_getladdr() 1386{ 1387 local proto addr rest 1388 ifconfig $1 2>/dev/null | while read proto addr rest; do 1389 case ${proto} in 1390 inet6) 1391 case ${addr} in 1392 fe80::*) 1393 if [ -z "$2" ]; then 1394 echo ${addr} 1395 return 1396 fi 1397 case ${rest} in 1398 *tentative*) 1399 continue 1400 ;; 1401 *) 1402 echo ${addr} 1403 return 1404 esac 1405 esac 1406 esac 1407 done 1408} 1409