network.subr revision 197139
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 197139 2009-09-12 22:13:41Z 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 applied 35# 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 ipv4_up ${ifn} && cfg=0 48 ipv6_up ${ifn} && cfg=0 49 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 print the 57# 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 ipx_down ${ifn} && cfg=0 68 ipv6_down ${ifn} && cfg=0 69 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 # ifconfig_IF 90 ifconfig_args=`ifconfig_getargs $1` 91 if [ -n "${ifconfig_args}" ]; then 92 ifconfig $1 ${ifconfig_args} 93 _cfg=0 94 fi 95 96 # inet6 specific 97 if afexists inet6; then 98 if ipv6if $1; then 99 if checkyesno ipv6_gateway_enable; then 100 _ipv6_opts="-accept_rtadv auto_linklocal" 101 else 102 _ipv6_opts="auto_linklocal" 103 fi 104 else 105 _ipv6_opts="-auto_linklocal ifdisabled" 106 fi 107 108 ifconfig $1 inet6 ${_ipv6_opts} 109 110 # ifconfig_IF_ipv6 111 ifconfig_args=`ifconfig_getargs $1 ipv6` 112 if [ -n "${ifconfig_args}" ]; then 113 ifconfig $1 inet6 -ifdisabled 114 ifconfig $1 ${ifconfig_args} 115 _cfg=0 116 fi 117 118 # backward compatiblity: $ipv6_ifconfig_IF 119 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF` 120 if [ -n "${ifconfig_args}" ]; then 121 warn "\$ipv6_ifconfig_$1 is obsolete." \ 122 " Use ifconfig_$1_ipv6 instead." 123 ifconfig $1 inet6 -ifdisabled 124 ifconfig $1 inet6 ${ifconfig_args} 125 _cfg=0 126 fi 127 fi 128 129 if [ ${_cfg} -eq 0 ]; then 130 ifconfig $1 up 131 fi 132 133 if wpaif $1; then 134 /etc/rc.d/wpa_supplicant start $1 135 _cfg=0 # XXX: not sure this should count 136 fi 137 138 if dhcpif $1; then 139 if [ $_cfg -ne 0 ] ; then 140 ifconfig $1 up 141 fi 142 if syncdhcpif $1; then 143 /etc/rc.d/dhclient start $1 144 fi 145 _cfg=0 146 fi 147 148 return $_cfg 149} 150 151# ifconfig_down if 152# returns 1 if wpa_supplicant or dhclient was stopped or 153# the interface exists. 154# 155ifconfig_down() 156{ 157 local _cfg 158 _cfg=1 159 160 if wpaif $1; then 161 /etc/rc.d/wpa_supplicant stop $1 162 _cfg=0 163 fi 164 165 if dhcpif $1; then 166 /etc/rc.d/dhclient stop $1 167 _cfg=0 168 fi 169 170 if ifexists $1; then 171 ifconfig $1 down 172 _cfg=0 173 fi 174 175 return $_cfg 176} 177 178# get_if_var if var [default] 179# Return the value of the pseudo-hash corresponding to $if where 180# $var is a string containg the sub-string "IF" which will be 181# replaced with $if after the characters defined in _punct are 182# replaced with '_'. If the variable is unset, replace it with 183# $default if given. 184get_if_var() 185{ 186 local _if _punct _var _default prefix suffix 187 188 if [ $# -ne 2 -a $# -ne 3 ]; then 189 err 3 'USAGE: get_if_var name var [default]' 190 fi 191 192 _if=$1 193 _punct=". - / +" 194 for _punct_c in $_punct; do 195 _if=`ltr ${_if} ${_punct_c} '_'` 196 done 197 _var=$2 198 _default=$3 199 200 prefix=${_var%%IF*} 201 suffix=${_var##*IF} 202 eval echo \${${prefix}${_if}${suffix}-${_default}} 203} 204 205# _ifconfig_getargs if [af] 206# Echos the arguments for the supplied interface to stdout. 207# returns 1 if empty. In general, ifconfig_getargs should be used 208# outside this file. 209_ifconfig_getargs() 210{ 211 local _ifn _af 212 _ifn=$1 213 _af=${2+_$2} 214 215 if [ -z "$_ifn" ]; then 216 return 1 217 fi 218 219 get_if_var $_ifn ifconfig_IF$_af "$ifconfig_DEFAULT" 220} 221 222# ifconfig_getargs if [af] 223# Takes the result from _ifconfig_getargs and removes pseudo 224# args such as DHCP and WPA. 225ifconfig_getargs() 226{ 227 local _tmpargs _arg _args 228 _tmpargs=`_ifconfig_getargs $1 $2` 229 if [ $? -eq 1 ]; then 230 return 1 231 fi 232 _args= 233 234 for _arg in $_tmpargs; do 235 case $_arg in 236 [Dd][Hh][Cc][Pp]) ;; 237 [Nn][Oo][Aa][Uu][Tt][Oo]) ;; 238 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;; 239 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;; 240 [Ww][Pp][Aa]) ;; 241 *) 242 _args="$_args $_arg" 243 ;; 244 esac 245 done 246 247 echo $_args 248} 249 250# autoif 251# Returns 0 if the interface should be automaticly configured at 252# boot time and 1 otherwise. 253autoif() 254{ 255 local _tmpargs _arg 256 _tmpargs=`_ifconfig_getargs $1` 257 258 for _arg in $_tmpargs; do 259 case $_arg in 260 [Nn][Oo][Aa][Uu][Tt][Oo]) 261 return 1 262 ;; 263 esac 264 done 265 266 return 0 267} 268 269# dhcpif if 270# Returns 0 if the interface is a DHCP interface and 1 otherwise. 271dhcpif() 272{ 273 local _tmpargs _arg 274 _tmpargs=`_ifconfig_getargs $1` 275 276 for _arg in $_tmpargs; do 277 case $_arg in 278 [Dd][Hh][Cc][Pp]) 279 return 0 280 ;; 281 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 282 return 0 283 ;; 284 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 285 return 0 286 ;; 287 esac 288 done 289 290 return 1 291} 292 293# syncdhcpif 294# Returns 0 if the interface should be configured synchronously and 295# 1 otherwise. 296syncdhcpif() 297{ 298 local _tmpargs _arg 299 _tmpargs=`_ifconfig_getargs $1` 300 301 for _arg in $_tmpargs; do 302 case $_arg in 303 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 304 return 1 305 ;; 306 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 307 return 0 308 ;; 309 esac 310 done 311 312 checkyesno synchronous_dhclient 313} 314 315# wpaif if 316# Returns 0 if the interface is a WPA interface and 1 otherwise. 317wpaif() 318{ 319 local _tmpargs _arg 320 _tmpargs=`_ifconfig_getargs $1` 321 322 for _arg in $_tmpargs; do 323 case $_arg in 324 [Ww][Pp][Aa]) 325 return 0 326 ;; 327 esac 328 done 329 330 return 1 331} 332 333# afexists af 334# Returns 0 if the address family is enabled in the kernel 335# 1 otherwise. 336afexists() 337{ 338 local _af 339 _af=$1 340 341 case ${_af} in 342 inet) 343 ${SYSCTL_N} net.inet > /dev/null 2>&1 344 ;; 345 inet6) 346 ${SYSCTL_N} net.inet6 > /dev/null 2>&1 347 ;; 348 *) 349 err 1 "afexists(): Unsupported address family: $_af" 350 ;; 351 esac 352} 353 354# noafif if 355# Returns 0 if the interface has no af configuration and 1 otherwise. 356noafif() 357{ 358 local _if 359 _if=$1 360 361 case $_if in 362 pflog[0-9]*|\ 363 pfsync[0-9]*|\ 364 an[0-9]*|\ 365 ath[0-9]*|\ 366 ipw[0-9]*|\ 367 iwi[0-9]*|\ 368 iwn[0-9]*|\ 369 ral[0-9]*|\ 370 wi[0-9]*|\ 371 wl[0-9]*|\ 372 wpi[0-9]*) 373 return 0 374 ;; 375 esac 376 377 return 1 378} 379 380# ipv6if if 381# Returns 0 if the interface should be configured for IPv6 and 382# 1 otherwise. 383ipv6if() 384{ 385 local _if i 386 _if=$1 387 388 if ! afexists inet6; then 389 return 1 390 fi 391 392 # lo0 is always IPv6-enabled 393 case $_if in 394 lo0) 395 return 0 396 ;; 397 esac 398 399 case "${ipv6_network_interfaces}" in 400 [Aa][Uu][Tt][Oo]) 401 return 0 402 ;; 403 ''|[Nn][Oo][Nn][Ee]) 404 return 1 405 ;; 406 esac 407 408 for i in ${ipv6_network_interfaces}; do 409 if [ "$i" = "$_if" ]; then 410 return 0 411 fi 412 done 413 414 return 1 415} 416 417# ipv6_autoconfif if 418# Returns 0 if the interface should be configured for IPv6 with 419# Stateless Address Configuration, 1 otherwise. 420ipv6_autoconfif() 421{ 422 local _if _tmpargs _arg 423 _if=$1 424 425 if ! ipv6if $_if; then 426 return 1 427 fi 428 if noafif $_if; then 429 return 1 430 fi 431 if checkyesno ipv6_gateway_enable; then 432 return 1 433 fi 434 435 case $_if in 436 lo0|\ 437 stf[0-9]*|\ 438 faith[0-9]*|\ 439 lp[0-9]*|\ 440 sl[0-9]*) 441 return 1 442 ;; 443 esac 444 445 _tmpargs=`_ifconfig_getargs $_if ipv6` 446 for _arg in $_tmpargs; do 447 case $_arg in 448 accept_rtadv) 449 return 0 450 ;; 451 esac 452 done 453 454 return 1 455} 456 457# ifexists if 458# Returns 0 if the interface exists and 1 otherwise. 459ifexists() 460{ 461 [ -z "$1" ] && return 1 462 ifconfig -n $1 > /dev/null 2>&1 463} 464 465# ipv4_up if 466# add IPv4 addresses to the interface $if 467ipv4_up() 468{ 469 local _if _ret 470 _if=$1 471 _ret=1 472 473 ifalias_up ${_if} inet && _ret=0 474 ipv4_addrs_common ${_if} alias && _ret=0 475 476 return $_ret 477} 478 479# ipv6_up if 480# add IPv6 addresses to the interface $if 481ipv6_up() 482{ 483 local _if _ret 484 _if=$1 485 _ret=1 486 487 if ! ipv6if $_if; then 488 return 0 489 fi 490 491 ifalias_up ${_if} inet6 && _ret=0 492 ipv6_prefix_hostid_addr_up ${_if} && _ret=0 493 ipv6_accept_rtadv_up ${_if} && _ret=0 494 495 # wait for DAD 496 sleep `${SYSCTL_N} net.inet6.ip6.dad_count` 497 sleep 1 498 499 return $_ret 500} 501 502# ipv4_down if 503# remove IPv4 addresses from the interface $if 504ipv4_down() 505{ 506 local _if _ifs _ret inetList oldifs _inet 507 _if=$1 508 _ifs="^" 509 _ret=1 510 511 inetList="`ifconfig ${_if} | grep 'inet ' | tr "\n" "$_ifs"`" 512 513 oldifs="$IFS" 514 IFS="$_ifs" 515 for _inet in $inetList ; do 516 # get rid of extraneous line 517 [ -z "$_inet" ] && break 518 519 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'` 520 521 IFS="$oldifs" 522 ifconfig ${_if} ${_inet} delete 523 IFS="$_ifs" 524 _ret=0 525 done 526 IFS="$oldifs" 527 528 ifalias_down ${_if} inet && _ret=0 529 ipv4_addrs_common ${_if} -alias && _ret=0 530 531 return $_ret 532} 533 534# ipv6_down if 535# remove IPv6 addresses from the interface $if 536ipv6_down() 537{ 538 local _if _ifs _ret inetList oldifs _inet6 539 _if=$1 540 _ifs="^" 541 _ret=1 542 543 if ! ipv6if $_if; then 544 return 0 545 fi 546 547 ipv6_accept_rtadv_down ${_if} && _ret=0 548 ifalias_down ${_if} inet6 && _ret=0 549 550 inetList="`ifconfig ${_if} | grep 'inet6 ' | tr "\n" "$_ifs"`" 551 552 oldifs="$IFS" 553 IFS="$_ifs" 554 for _inet6 in $inetList ; do 555 # get rid of extraneous line 556 [ -z "$_inet6" ] && break 557 558 _inet6=`expr "$_inet6" : '.*\(inet6 \([0-9a-f:]*\)\).*'` 559 560 IFS="$oldifs" 561 ifconfig ${_if} ${_inet6} -alias 562 IFS="$_ifs" 563 _ret=0 564 done 565 IFS="$oldifs" 566 567 return $_ret 568} 569 570# ipv4_addrs_common if action 571# Evaluate the ifconfig_if_ipv4 arguments for interface $if 572# and use $action to add or remove IPv4 addresses from $if. 573ipv4_addrs_common() 574{ 575 local _ret _if _action _cidr _cidr_addr 576 local _ipaddr _netmask _range _ipnet _iplow _iphigh _ipcount 577 _ret=1 578 _if=$1 579 _action=$2 580 581 # get ipv4-addresses 582 cidr_addr=`get_if_var $_if ipv4_addrs_IF` 583 584 for _cidr in ${cidr_addr}; do 585 _ipaddr=${_cidr%%/*} 586 _netmask="/"${_cidr##*/} 587 _range=${_ipaddr##*.} 588 _ipnet=${_ipaddr%.*} 589 _iplow=${_range%-*} 590 _iphigh=${_range#*-} 591 592 # clear netmask when removing aliases 593 if [ "${_action}" = "-alias" ]; then 594 _netmask="" 595 fi 596 597 _ipcount=${_iplow} 598 while [ "${_ipcount}" -le "${_iphigh}" ]; do 599 eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}" 600 _ipcount=$((${_ipcount}+1)) 601 _ret=0 602 603 # only the first ipaddr in a subnet need the real netmask 604 if [ "${_action}" != "-alias" ]; then 605 _netmask="/32" 606 fi 607 done 608 done 609 610 return $_ret 611} 612 613# ifalias_up if af 614# Configure aliases for network interface $if. 615# It returns 0 if at least one alias was configured or 616# 1 if there were none. 617# 618ifalias_up() 619{ 620 local _ret 621 _ret=1 622 623 case "$2" in 624 inet) 625 _ret=`ifalias_ipv4_up "$1"` 626 ;; 627 inet6) 628 _ret=`ifalias_ipv6_up "$1"` 629 ;; 630 esac 631 632 return $_ret 633} 634 635# ifalias_ipv4_up if 636# Helper function for ifalias_up(). Handles IPv4. 637# 638ifalias_ipv4_up() 639{ 640 local _ret alias ifconfig_args 641 _ret=1 642 643 # ifconfig_IF_aliasN which starts with "inet" 644 alias=0 645 while : ; do 646 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 647 case "${ifconfig_args}" in 648 inet\ *) 649 ifconfig $1 ${ifconfig_args} alias && _ret=0 650 ;; 651 "") 652 break 653 ;; 654 esac 655 alias=$((${alias} + 1)) 656 done 657 658 return $_ret 659} 660 661# ifalias_ipv6_up if 662# Helper function for ifalias_up(). Handles IPv6. 663# 664ifalias_ipv6_up() 665{ 666 local _ret alias ifconfig_args 667 _ret=1 668 669 # ifconfig_IF_aliasN which starts with "inet6" 670 alias=0 671 while : ; do 672 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 673 case "${ifconfig_args}" in 674 inet6\ *) 675 ifconfig $1 ${ifconfig_args} alias && _ret=0 676 ;; 677 "") 678 break 679 ;; 680 esac 681 alias=$((${alias} + 1)) 682 done 683 684 # backward compatibility: ipv6_ifconfig_IF_aliasN. 685 alias=0 686 while : ; do 687 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}` 688 case "${ifconfig_args}" in 689 "") 690 break 691 ;; 692 *) 693 ifconfig $1 inet6 ${ifconfig_args} alias && _ret=0 694 warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." 695 " Use ifconfig_$1_aliasN instead." 696 ;; 697 esac 698 alias=$((${alias} + 1)) 699 done 700 701 return $_ret 702} 703 704#ifalias_down if af 705# Remove aliases for network interface $if. 706# It returns 0 if at least one alias was removed or 707# 1 if there were none. 708# 709ifalias_down() 710{ 711 local _ret 712 _ret=1 713 714 case "$2" in 715 inet) 716 _ret=`ifalias_ipv4_down "$1"` 717 ;; 718 inet6) 719 _ret=`ifalias_ipv6_down "$1"` 720 ;; 721 esac 722 723 return $_ret 724} 725 726#ifalias_ipv4_down if 727# Helper function for ifalias_down(). Handles IPv4. 728# 729ifalias_ipv4_down() 730{ 731 local _ret alias ifconfig_args 732 _ret=1 733 734 # ifconfig_IF_aliasN which starts with "inet" 735 alias=0 736 while : ; do 737 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 738 case "${ifconfig_args}" in 739 inet\ *) 740 ifconfig $1 ${ifconfig_args} -alias && _ret=0 741 ;; 742 "") 743 break 744 ;; 745 esac 746 alias=$((${alias} + 1)) 747 done 748 749 return $_ret 750} 751 752#ifalias_ipv6_down if 753# Helper function for ifalias_down(). Handles IPv6. 754# 755ifalias_ipv6_down() 756{ 757 local _ret alias ifconfig_args 758 _ret=1 759 760 # ifconfig_IF_aliasN which starts with "inet6" 761 alias=0 762 while : ; do 763 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 764 case "${ifconfig_args}" in 765 inet6\ *) 766 ifconfig $1 ${ifconfig_args} -alias && _ret=0 767 ;; 768 "") 769 break 770 ;; 771 esac 772 alias=$((${alias} + 1)) 773 done 774 775 # backward compatibility: ipv6_ifconfig_IF_aliasN. 776 while : ; do 777 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}` 778 case "${ifconfig_args}" in 779 "") 780 break 781 ;; 782 *) 783 ifconfig $1 inet6 ${ifconfig_args} -alias 784 alias=$((${alias} + 1)) 785 warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." 786 " Use ifconfig_$1_aliasN instead." 787 _ret=0 788 ;; 789 esac 790 done 791 792 return $_ret 793} 794 795# ipv6_prefix_hostid_addr_up if 796# add IPv6 prefix + hostid addr to the interface $if 797ipv6_prefix_hostid_addr_up() 798{ 799 local _if prefix laddr hostid j address 800 _if=$1 801 prefix=`get_if_var ${_if} ipv6_prefix_IF` 802 803 if [ -n "${prefix}" ]; then 804 laddr=`network6_getladdr ${_if}` 805 hostid=${laddr#fe80::} 806 hostid=${hostid%\%*} 807 808 for j in ${prefix}; do 809 address=$j\:${hostid} 810 ifconfig ${_if} inet6 ${address} prefixlen 64 alias 811 812 # if I am a router, add subnet router 813 # anycast address (RFC 2373). 814 if checkyesno ipv6_gateway_enable; then 815 ifconfig ${_if} inet6 $j:: prefixlen 64 \ 816 alias anycast 817 fi 818 done 819 fi 820} 821 822# ipv6_accept_rtadv_up if 823# Enable accepting Router Advertisement and send Router 824# Solicitation message 825ipv6_accept_rtadv_up() 826{ 827 if ipv6_autoconfif $1; then 828 ifconfig $1 inet6 accept_rtadv up 829 rtsol ${rtsol_flags} $1 830 fi 831} 832 833# ipv6_accept_rtadv_down if 834# Disable accepting Router Advertisement 835ipv6_accept_rtadv_down() 836{ 837 if ipv6_autoconfif $1; then 838 ifconfig $1 inet6 -accept_rtadv 839 fi 840} 841 842# ifscript_up if 843# Evaluate a startup script for the $if interface. 844# It returns 0 if a script was found and processed or 845# 1 if no script was found. 846# 847ifscript_up() 848{ 849 if [ -r /etc/start_if.$1 ]; then 850 . /etc/start_if.$1 851 return 0 852 else 853 return 1 854 fi 855} 856 857# ifscript_down if 858# Evaluate a shutdown script for the $if interface. 859# It returns 0 if a script was found and processed or 860# 1 if no script was found. 861# 862ifscript_down() 863{ 864 if [ -r /etc/stop_if.$1 ]; then 865 . /etc/stop_if.$1 866 return 0 867 else 868 return 1 869 fi 870} 871 872# Create cloneable interfaces. 873# 874clone_up() 875{ 876 local _prefix _list ifn 877 _prefix= 878 _list= 879 880 # create_args_IF 881 for ifn in ${cloned_interfaces}; do 882 ifconfig ${ifn} create `get_if_var ${ifn} create_args_IF` 883 if [ $? -eq 0 ]; then 884 _list="${_list}${_prefix}${ifn}" 885 [ -z "$_prefix" ] && _prefix=' ' 886 fi 887 done 888 debug "Cloned: ${_list}" 889} 890 891# Destroy cloned interfaces. Destroyed interfaces are echoed 892# to standard output. 893# 894clone_down() 895{ 896 local _prefix _list ifn 897 _prefix= 898 _list= 899 900 for ifn in ${cloned_interfaces}; do 901 ifconfig ${ifn} destroy 902 if [ $? -eq 0 ]; then 903 _list="${_list}${_prefix}${ifn}" 904 [ -z "$_prefix" ] && _prefix=' ' 905 fi 906 done 907 debug "Destroyed clones: ${_list}" 908} 909 910# Create and configure child interfaces. 911# Return 0 if child interfaces are created. 912# 913childif_create() 914{ 915 local cfg child child_wlans create_args debug_flags ifn i 916 cfg=1 917 ifn=$1 918 919 # Create wireless interfaces 920 child_wlans=`get_if_var $ifn wlans_IF` 921 922 for child in ${child_wlans}; do 923 create_args="wlandev $ifn `get_if_var $child create_args_IF`" 924 debug_flags="`get_if_var $child wlandebug_IF`" 925 926 if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then 927 ifconfig $child create ${create_args} && cfg=0 928 if [ -n "${debug_flags}" ]; then 929 wlandebug -i $child ${debug_flags} 930 fi 931 else 932 i=`ifconfig wlan create ${create_args}` 933 if [ -n "${debug_flags}" ]; then 934 wlandebug -i $i ${debug_flags} 935 fi 936 ifconfig $i name $child && cfg=0 937 fi 938 if autoif $child; then 939 ifn_start $child 940 fi 941 done 942 943 return ${cfg} 944} 945 946# Destroy child interfaces. 947# 948childif_destroy() 949{ 950 local cfg child child_wlans ifn 951 cfg=1 952 953 child_wlans="`get_if_var $ifn wlans_IF` `get_if_var $ifn vaps_IF`" 954 for child in ${child_wlans}; do 955 ifconfig $child destroy && cfg=0 956 done 957 958 return ${cfg} 959} 960 961# Create netgraph nodes. 962# 963ng_mkpeer() { 964 ngctl -f - 2> /dev/null <<EOF 965mkpeer $* 966msg dummy nodeinfo 967EOF 968} 969 970ng_create_one() { 971 local t 972 973 ng_mkpeer $* | while read line; do 974 t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'` 975 if [ -n "${t}" ]; then 976 echo ${t} 977 return 978 fi 979 done 980} 981 982gif_up() { 983 local i peers 984 985 for i in ${gif_interfaces}; do 986 peers=`get_if_var $i gifconfig_IF` 987 case ${peers} in 988 '') 989 continue 990 ;; 991 *) 992 if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then 993 ifconfig $i create >/dev/null 2>&1 994 else 995 gif=`ifconfig gif create` 996 ifconfig $gif name $i 997 fi 998 ifconfig $i tunnel ${peers} 999 ifconfig $i up 1000 ;; 1001 esac 1002 done 1003} 1004 1005# ng_fec_create ifn 1006# Configure Fast EtherChannel for interface $ifn. Returns 0 if FEC 1007# arguments were found and configured; returns !0 otherwise. 1008ng_fec_create() 1009{ 1010 local req_iface iface bogus 1011 req_iface="$1" 1012 1013 ngctl shutdown ${req_iface}: > /dev/null 2>&1 1014 1015 bogus="" 1016 while true; do 1017 iface=`ng_create_one fec dummy fec` 1018 if [ -z "${iface}" ]; then 1019 exit 2 1020 fi 1021 if [ "${iface}" = "${req_iface}" ]; then 1022 break 1023 fi 1024 bogus="${bogus} ${iface}" 1025 done 1026 1027 for iface in ${bogus}; do 1028 ngctl shutdown ${iface}: 1029 done 1030} 1031 1032fec_up() { 1033 local i j 1034 1035 for i in ${fec_interfaces}; do 1036 ng_fec_create $i 1037 for j in `get_if_var $i fecconfig_IF`; do 1038 case ${j} in 1039 '') 1040 continue 1041 ;; 1042 *) 1043 ngctl msg ${i}: add_iface "\"${j}\"" 1044 ;; 1045 esac 1046 done 1047 done 1048} 1049 1050# 1051# ipx_up ifn 1052# Configure any IPX addresses for interface $ifn. Returns 0 if IPX 1053# arguments were found and configured; returns 1 otherwise. 1054# 1055ipx_up() 1056{ 1057 local ifn 1058 ifn="$1" 1059 1060 # ifconfig_IF_ipx 1061 ifconfig_args=`_ifconfig_getargs $ifn ipx` 1062 if [ -n "${ifconfig_args}" ]; then 1063 ifconfig ${ifn} ${ifconfig_args} 1064 return 0 1065 fi 1066 1067 return 1 1068} 1069 1070# ipx_down ifn 1071# Remove IPX addresses for interface $ifn. Returns 0 if IPX 1072# addresses were found and unconfigured. It returns 1, otherwise. 1073# 1074ipx_down() 1075{ 1076 local _if _ifs _ret ipxList oldifs _ipx 1077 _if=$1 1078 _ifs="^" 1079 _ret=1 1080 ipxList="`ifconfig ${_if} | grep 'ipx ' | tr "\n" "$_ifs"`" 1081 oldifs="$IFS" 1082 1083 IFS="$_ifs" 1084 for _ipx in $ipxList ; do 1085 # get rid of extraneous line 1086 [ -z "$_ipx" ] && break 1087 1088 _ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'` 1089 1090 IFS="$oldifs" 1091 ifconfig ${_if} ${_ipx} delete 1092 IFS="$_ifs" 1093 _ret=0 1094 done 1095 IFS="$oldifs" 1096 1097 return $_ret 1098} 1099 1100# ifnet_rename 1101# Rename all requested interfaces. 1102# 1103ifnet_rename() 1104{ 1105 local _if _ifname 1106 1107 # ifconfig_IF_name 1108 for _if in `ifconfig -l`; do 1109 _ifname=`get_if_var $_if ifconfig_IF_name` 1110 if [ ! -z "$_ifname" ]; then 1111 ifconfig $_if name $_ifname 1112 fi 1113 done 1114 1115 return 0 1116} 1117 1118# list_net_interfaces type 1119# List all network interfaces. The type of interface returned 1120# can be controlled by the type argument. The type 1121# argument can be any of the following: 1122# nodhcp - all interfaces, excluding DHCP configured interfaces 1123# dhcp - list only DHCP configured interfaces 1124# noautoconf - all interfaces, excluding IPv6 Stateless 1125# Address Autoconf configured interfaces 1126# autoconf - list only IPv6 Stateless Address Autoconf 1127# configured interfaces 1128# If no argument is specified all network interfaces are output. 1129# Note that the list will include cloned interfaces if applicable. 1130# Cloned interfaces must already exist to have a chance to appear 1131# in the list if ${network_interfaces} is set to `auto'. 1132# 1133list_net_interfaces() 1134{ 1135 local type _tmplist _list _autolist _lo _if 1136 type=$1 1137 1138 # Get a list of ALL the interfaces and make lo0 first if it's there. 1139 # 1140 _tmplist= 1141 case ${network_interfaces} in 1142 [Aa][Uu][Tt][Oo]) 1143 _autolist="`ifconfig -l`" 1144 _lo= 1145 for _if in ${_autolist} ; do 1146 if autoif $_if; then 1147 if [ "$_if" = "lo0" ]; then 1148 _lo="lo0 " 1149 else 1150 _tmplist="${_tmplist} ${_if}" 1151 fi 1152 fi 1153 done 1154 _tmplist="${_lo}${_tmplist# }" 1155 ;; 1156 *) 1157 _tmplist="${network_interfaces} ${cloned_interfaces}" 1158 1159 # lo0 is effectively mandatory, so help prevent foot-shooting 1160 # 1161 case "$_tmplist" in 1162 lo0|'lo0 '*|*' lo0'|*' lo0 '*) ;; # This is fine, do nothing 1163 *) _tmplist="lo0 ${_tmplist}" ;; 1164 esac 1165 ;; 1166 esac 1167 1168 _list= 1169 case "$type" in 1170 nodhcp) 1171 for _if in ${_tmplist} ; do 1172 if ! dhcpif $_if && \ 1173 [ -n "`_ifconfig_getargs $_if`" ]; then 1174 _list="${_list# } ${_if}" 1175 fi 1176 done 1177 ;; 1178 dhcp) 1179 for _if in ${_tmplist} ; do 1180 if dhcpif $_if; then 1181 _list="${_list# } ${_if}" 1182 fi 1183 done 1184 ;; 1185 noautoconf) 1186 for _if in ${_tmplist} ; do 1187 if ! ipv6_autoconfif $_if && \ 1188 [ -n "`_ifconfig_getargs $_if ipv6`" ]; then 1189 _list="${_list# } ${_if}" 1190 fi 1191 done 1192 ;; 1193 autoconf) 1194 for _if in ${_tmplist} ; do 1195 if ipv6_autoconfif $_if; then 1196 _list="${_list# } ${_if}" 1197 fi 1198 done 1199 ;; 1200 *) 1201 _list=${_tmplist} 1202 ;; 1203 esac 1204 1205 echo $_list 1206 1207 return 0 1208} 1209 1210# get_default_if -address_family 1211# Get the interface of the default route for the given address family. 1212# The -address_family argument must be suitable passing to route(8). 1213# 1214get_default_if() 1215{ 1216 local routeget oldifs defif line 1217 defif= 1218 oldifs="$IFS" 1219 IFS=" 1220" 1221 for line in `route -n get $1 default 2>/dev/null`; do 1222 case $line in 1223 *interface:*) 1224 defif=${line##*: } 1225 ;; 1226 esac 1227 done 1228 IFS=${oldifs} 1229 1230 echo $defif 1231} 1232 1233hexdigit() 1234{ 1235 if [ $1 -lt 10 ]; then 1236 echo $1 1237 else 1238 case $1 in 1239 10) echo a ;; 1240 11) echo b ;; 1241 12) echo c ;; 1242 13) echo d ;; 1243 14) echo e ;; 1244 15) echo f ;; 1245 esac 1246 fi 1247} 1248 1249hexprint() 1250{ 1251 local val str dig 1252 val=$1 1253 str='' 1254 dig=`hexdigit $((${val} & 15))` 1255 str=${dig}${str} 1256 val=$((${val} >> 4)) 1257 1258 while [ ${val} -gt 0 ]; do 1259 dig=`hexdigit $((${val} & 15))` 1260 str=${dig}${str} 1261 val=$((${val} >> 4)) 1262 done 1263 1264 echo ${str} 1265} 1266 1267is_wired_interface() 1268{ 1269 local media 1270 1271 case `ifconfig $1 2>/dev/null` in 1272 *media:?Ethernet*) media=Ethernet ;; 1273 esac 1274 1275 test "$media" = "Ethernet" 1276} 1277 1278network6_getladdr() 1279{ 1280 local proto addr rest 1281 ifconfig $1 2>/dev/null | while read proto addr rest; do 1282 case ${proto} in 1283 inet6) 1284 case ${addr} in 1285 fe80::*) 1286 if [ -z "$2" ]; then 1287 echo ${addr} 1288 return 1289 fi 1290 case ${rest} in 1291 *tentative*) 1292 continue 1293 ;; 1294 *) 1295 echo ${addr} 1296 return 1297 esac 1298 esac 1299 esac 1300 done 1301} 1302