network.subr revision 201216
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 201216 2009-12-29 21:06:49Z jhb $ 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 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 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 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" 101 fi 102 else 103 if checkyesno ipv6_prefer; then 104 _ipv6_opts="-ifdisabled" 105 else 106 _ipv6_opts="ifdisabled" 107 fi 108 109 # backward compatibility: $ipv6_enable 110 case $ipv6_enable in 111 [Yy][Ee][Ss]) 112 _ipv6_opts="${_ipv6_opts} accept_rtadv" 113 ;; 114 esac 115 fi 116 117 if [ -n "${_ipv6_opts}" ]; then 118 ifconfig $1 inet6 ${_ipv6_opts} 119 fi 120 121 # ifconfig_IF_ipv6 122 ifconfig_args=`ifconfig_getargs $1 ipv6` 123 if [ -n "${ifconfig_args}" ]; then 124 ifconfig $1 inet6 -ifdisabled 125 ifconfig $1 ${ifconfig_args} 126 _cfg=0 127 fi 128 129 # backward compatiblity: $ipv6_ifconfig_IF 130 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF` 131 if [ -n "${ifconfig_args}" ]; then 132 warn "\$ipv6_ifconfig_$1 is obsolete." \ 133 " Use ifconfig_$1_ipv6 instead." 134 ifconfig $1 inet6 -ifdisabled 135 ifconfig $1 inet6 ${ifconfig_args} 136 _cfg=0 137 fi 138 fi 139 140 if [ ${_cfg} -eq 0 ]; then 141 ifconfig $1 up 142 fi 143 144 if wpaif $1; then 145 /etc/rc.d/wpa_supplicant start $1 146 _cfg=0 # XXX: not sure this should count 147 fi 148 149 if dhcpif $1; then 150 if [ $_cfg -ne 0 ] ; then 151 ifconfig $1 up 152 fi 153 if syncdhcpif $1; then 154 /etc/rc.d/dhclient start $1 155 fi 156 _cfg=0 157 fi 158 159 return $_cfg 160} 161 162# ifconfig_down if 163# returns 1 if wpa_supplicant or dhclient was stopped or 164# the interface exists. 165# 166ifconfig_down() 167{ 168 local _cfg 169 _cfg=1 170 171 if wpaif $1; then 172 /etc/rc.d/wpa_supplicant stop $1 173 _cfg=0 174 fi 175 176 if dhcpif $1; then 177 /etc/rc.d/dhclient stop $1 178 _cfg=0 179 fi 180 181 if ifexists $1; then 182 ifconfig $1 down 183 _cfg=0 184 fi 185 186 return $_cfg 187} 188 189# get_if_var if var [default] 190# Return the value of the pseudo-hash corresponding to $if where 191# $var is a string containg the sub-string "IF" which will be 192# replaced with $if after the characters defined in _punct are 193# replaced with '_'. If the variable is unset, replace it with 194# $default if given. 195get_if_var() 196{ 197 local _if _punct _var _default prefix suffix 198 199 if [ $# -ne 2 -a $# -ne 3 ]; then 200 err 3 'USAGE: get_if_var name var [default]' 201 fi 202 203 _if=$1 204 _punct=". - / +" 205 for _punct_c in $_punct; do 206 _if=`ltr ${_if} ${_punct_c} '_'` 207 done 208 _var=$2 209 _default=$3 210 211 prefix=${_var%%IF*} 212 suffix=${_var##*IF} 213 eval echo \${${prefix}${_if}${suffix}-${_default}} 214} 215 216# _ifconfig_getargs if [af] 217# Echos the arguments for the supplied interface to stdout. 218# returns 1 if empty. In general, ifconfig_getargs should be used 219# outside this file. 220_ifconfig_getargs() 221{ 222 local _ifn _af 223 _ifn=$1 224 _af=${2+_$2} 225 226 if [ -z "$_ifn" ]; then 227 return 1 228 fi 229 230 get_if_var $_ifn ifconfig_IF$_af "$ifconfig_DEFAULT" 231} 232 233# ifconfig_getargs if [af] 234# Takes the result from _ifconfig_getargs and removes pseudo 235# args such as DHCP and WPA. 236ifconfig_getargs() 237{ 238 local _tmpargs _arg _args 239 _tmpargs=`_ifconfig_getargs $1 $2` 240 if [ $? -eq 1 ]; then 241 return 1 242 fi 243 _args= 244 245 for _arg in $_tmpargs; do 246 case $_arg in 247 [Dd][Hh][Cc][Pp]) ;; 248 [Nn][Oo][Aa][Uu][Tt][Oo]) ;; 249 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;; 250 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;; 251 [Ww][Pp][Aa]) ;; 252 *) 253 _args="$_args $_arg" 254 ;; 255 esac 256 done 257 258 echo $_args 259} 260 261# autoif 262# Returns 0 if the interface should be automaticly configured at 263# boot time and 1 otherwise. 264autoif() 265{ 266 local _tmpargs _arg 267 _tmpargs=`_ifconfig_getargs $1` 268 269 for _arg in $_tmpargs; do 270 case $_arg in 271 [Nn][Oo][Aa][Uu][Tt][Oo]) 272 return 1 273 ;; 274 esac 275 done 276 277 return 0 278} 279 280# dhcpif if 281# Returns 0 if the interface is a DHCP interface and 1 otherwise. 282dhcpif() 283{ 284 local _tmpargs _arg 285 _tmpargs=`_ifconfig_getargs $1` 286 287 for _arg in $_tmpargs; do 288 case $_arg in 289 [Dd][Hh][Cc][Pp]) 290 return 0 291 ;; 292 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 293 return 0 294 ;; 295 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 296 return 0 297 ;; 298 esac 299 done 300 301 return 1 302} 303 304# syncdhcpif 305# Returns 0 if the interface should be configured synchronously and 306# 1 otherwise. 307syncdhcpif() 308{ 309 local _tmpargs _arg 310 _tmpargs=`_ifconfig_getargs $1` 311 312 for _arg in $_tmpargs; do 313 case $_arg in 314 [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 315 return 1 316 ;; 317 [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) 318 return 0 319 ;; 320 esac 321 done 322 323 checkyesno synchronous_dhclient 324} 325 326# wpaif if 327# Returns 0 if the interface is a WPA interface and 1 otherwise. 328wpaif() 329{ 330 local _tmpargs _arg 331 _tmpargs=`_ifconfig_getargs $1` 332 333 for _arg in $_tmpargs; do 334 case $_arg in 335 [Ww][Pp][Aa]) 336 return 0 337 ;; 338 esac 339 done 340 341 return 1 342} 343 344# afexists af 345# Returns 0 if the address family is enabled in the kernel 346# 1 otherwise. 347afexists() 348{ 349 local _af 350 _af=$1 351 352 case ${_af} in 353 inet) 354 ${SYSCTL_N} net.inet > /dev/null 2>&1 355 ;; 356 inet6) 357 ${SYSCTL_N} net.inet6 > /dev/null 2>&1 358 ;; 359 ipx) 360 ${SYSCTL_N} net.ipx > /dev/null 2>&1 361 ;; 362 atm) 363 if [ -x /sbin/atmconfig ]; then 364 /sbin/atmconfig diag list > /dev/null 2>&1 365 else 366 return 1 367 fi 368 ;; 369 *) 370 err 1 "afexists(): Unsupported address family: $_af" 371 ;; 372 esac 373} 374 375# noafif if 376# Returns 0 if the interface has no af configuration and 1 otherwise. 377noafif() 378{ 379 local _if 380 _if=$1 381 382 case $_if in 383 pflog[0-9]*|\ 384 pfsync[0-9]*|\ 385 an[0-9]*|\ 386 ath[0-9]*|\ 387 ipw[0-9]*|\ 388 iwi[0-9]*|\ 389 iwn[0-9]*|\ 390 ral[0-9]*|\ 391 wi[0-9]*|\ 392 wl[0-9]*|\ 393 wpi[0-9]*) 394 return 0 395 ;; 396 esac 397 398 return 1 399} 400 401# ipv6if if 402# Returns 0 if the interface should be configured for IPv6 and 403# 1 otherwise. 404ipv6if() 405{ 406 local _if _tmpargs i 407 _if=$1 408 409 if ! afexists inet6; then 410 return 1 411 fi 412 413 # lo0 is always IPv6-enabled 414 case $_if in 415 lo0) 416 return 0 417 ;; 418 esac 419 420 # True if $ifconfig_IF_ipv6 is defined. 421 _tmpargs=`_ifconfig_getargs $_if ipv6` 422 if [ -n "${_tmpargs}" ]; then 423 return 0 424 fi 425 426 # backward compatibility: True if $ipv6_ifconfig_IF is defined. 427 _tmpargs=`get_if_var $_if ipv6_ifconfig_IF` 428 if [ -n "${_tmpargs}" ]; then 429 return 0 430 fi 431 432 case "${ipv6_network_interfaces}" in 433 [Aa][Uu][Tt][Oo]) 434 return 0 435 ;; 436 ''|[Nn][Oo][Nn][Ee]) 437 return 1 438 ;; 439 esac 440 441 for i in ${ipv6_network_interfaces}; do 442 if [ "$i" = "$_if" ]; then 443 return 0 444 fi 445 done 446 447 return 1 448} 449 450# ipv6_autoconfif if 451# Returns 0 if the interface should be configured for IPv6 with 452# Stateless Address Configuration, 1 otherwise. 453ipv6_autoconfif() 454{ 455 local _if _tmpargs _arg 456 _if=$1 457 458 if ! ipv6if $_if; then 459 return 1 460 fi 461 if noafif $_if; then 462 return 1 463 fi 464 if checkyesno ipv6_gateway_enable; then 465 return 1 466 fi 467 _tmpargs=`get_if_var $_if ipv6_prefix_IF` 468 if [ -n "${_tmpargs}" ]; then 469 return 1 470 fi 471 472 case $_if in 473 lo0|\ 474 stf[0-9]*|\ 475 faith[0-9]*|\ 476 lp[0-9]*|\ 477 sl[0-9]*|\ 478 pflog[0-9]*|\ 479 pfsync[0-9]*) 480 return 1 481 ;; 482 esac 483 484 # backward compatibility: $ipv6_enable 485 case $ipv6_enable in 486 [Yy][Ee][Ss]) 487 return 0 488 ;; 489 esac 490 491 _tmpargs=`_ifconfig_getargs $_if ipv6` 492 for _arg in $_tmpargs; do 493 case $_arg in 494 accept_rtadv) 495 return 0 496 ;; 497 esac 498 done 499 500 # backward compatibility: $ipv6_ifconfig_IF 501 _tmpargs=`get_if_var $_if ipv6_ifconfig_IF` 502 for _arg in $_tmpargs; do 503 case $_arg in 504 accept_rtadv) 505 return 0 506 ;; 507 esac 508 done 509 510 return 1 511} 512 513# ifexists if 514# Returns 0 if the interface exists and 1 otherwise. 515ifexists() 516{ 517 [ -z "$1" ] && return 1 518 ifconfig -n $1 > /dev/null 2>&1 519} 520 521# ipv4_up if 522# add IPv4 addresses to the interface $if 523ipv4_up() 524{ 525 local _if _ret 526 _if=$1 527 _ret=1 528 529 ifalias_up ${_if} inet && _ret=0 530 ipv4_addrs_common ${_if} alias && _ret=0 531 532 return $_ret 533} 534 535# ipv6_up if 536# add IPv6 addresses to the interface $if 537ipv6_up() 538{ 539 local _if _ret 540 _if=$1 541 _ret=1 542 543 if ! ipv6if $_if; then 544 return 0 545 fi 546 547 ifalias_up ${_if} inet6 && _ret=0 548 ipv6_prefix_hostid_addr_up ${_if} && _ret=0 549 ipv6_accept_rtadv_up ${_if} && _ret=0 550 551 # wait for DAD 552 sleep `${SYSCTL_N} net.inet6.ip6.dad_count` 553 sleep 1 554 555 return $_ret 556} 557 558# ipv4_down if 559# remove IPv4 addresses from the interface $if 560ipv4_down() 561{ 562 local _if _ifs _ret inetList oldifs _inet 563 _if=$1 564 _ifs="^" 565 _ret=1 566 567 inetList="`ifconfig ${_if} | grep 'inet ' | tr "\n" "$_ifs"`" 568 569 oldifs="$IFS" 570 IFS="$_ifs" 571 for _inet in $inetList ; do 572 # get rid of extraneous line 573 [ -z "$_inet" ] && break 574 575 _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'` 576 577 IFS="$oldifs" 578 ifconfig ${_if} ${_inet} delete 579 IFS="$_ifs" 580 _ret=0 581 done 582 IFS="$oldifs" 583 584 ifalias_down ${_if} inet && _ret=0 585 ipv4_addrs_common ${_if} -alias && _ret=0 586 587 return $_ret 588} 589 590# ipv6_down if 591# remove IPv6 addresses from the interface $if 592ipv6_down() 593{ 594 local _if _ifs _ret inetList oldifs _inet6 595 _if=$1 596 _ifs="^" 597 _ret=1 598 599 if ! ipv6if $_if; then 600 return 0 601 fi 602 603 ipv6_accept_rtadv_down ${_if} && _ret=0 604 ifalias_down ${_if} inet6 && _ret=0 605 606 inetList="`ifconfig ${_if} | grep 'inet6 ' | tr "\n" "$_ifs"`" 607 608 oldifs="$IFS" 609 IFS="$_ifs" 610 for _inet6 in $inetList ; do 611 # get rid of extraneous line 612 [ -z "$_inet6" ] && break 613 614 _inet6=`expr "$_inet6" : '.*\(inet6 \([0-9a-f:]*\)\).*'` 615 616 IFS="$oldifs" 617 ifconfig ${_if} ${_inet6} -alias 618 IFS="$_ifs" 619 _ret=0 620 done 621 IFS="$oldifs" 622 623 return $_ret 624} 625 626# ipv4_addrs_common if action 627# Evaluate the ifconfig_if_ipv4 arguments for interface $if and 628# use $action to add or remove IPv4 addresses from $if. 629ipv4_addrs_common() 630{ 631 local _ret _if _action _cidr _cidr_addr 632 local _ipaddr _netmask _range _ipnet _iplow _iphigh _ipcount 633 _ret=1 634 _if=$1 635 _action=$2 636 637 # get ipv4-addresses 638 cidr_addr=`get_if_var $_if ipv4_addrs_IF` 639 640 for _cidr in ${cidr_addr}; do 641 _ipaddr=${_cidr%%/*} 642 _netmask="/"${_cidr##*/} 643 _range=${_ipaddr##*.} 644 _ipnet=${_ipaddr%.*} 645 _iplow=${_range%-*} 646 _iphigh=${_range#*-} 647 648 # clear netmask when removing aliases 649 if [ "${_action}" = "-alias" ]; then 650 _netmask="" 651 fi 652 653 _ipcount=${_iplow} 654 while [ "${_ipcount}" -le "${_iphigh}" ]; do 655 eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}" 656 _ipcount=$((${_ipcount}+1)) 657 _ret=0 658 659 # only the first ipaddr in a subnet need the real netmask 660 if [ "${_action}" != "-alias" ]; then 661 _netmask="/32" 662 fi 663 done 664 done 665 666 return $_ret 667} 668 669# ifalias_up if af 670# Configure aliases for network interface $if. 671# It returns 0 if at least one alias was configured or 672# 1 if there were none. 673# 674ifalias_up() 675{ 676 local _ret 677 _ret=1 678 679 case "$2" in 680 inet) 681 _ret=`ifalias_ipv4_up "$1"` 682 ;; 683 inet6) 684 _ret=`ifalias_ipv6_up "$1"` 685 ;; 686 esac 687 688 return $_ret 689} 690 691# ifalias_ipv4_up if 692# Helper function for ifalias_up(). Handles IPv4. 693# 694ifalias_ipv4_up() 695{ 696 local _ret alias ifconfig_args 697 _ret=1 698 699 # ifconfig_IF_aliasN which starts with "inet" 700 alias=0 701 while : ; do 702 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 703 case "${ifconfig_args}" in 704 inet\ *) 705 ifconfig $1 ${ifconfig_args} alias && _ret=0 706 ;; 707 "") 708 break 709 ;; 710 esac 711 alias=$((${alias} + 1)) 712 done 713 714 return $_ret 715} 716 717# ifalias_ipv6_up if 718# Helper function for ifalias_up(). Handles IPv6. 719# 720ifalias_ipv6_up() 721{ 722 local _ret alias ifconfig_args 723 _ret=1 724 725 # ifconfig_IF_aliasN which starts with "inet6" 726 alias=0 727 while : ; do 728 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 729 case "${ifconfig_args}" in 730 inet6\ *) 731 ifconfig $1 ${ifconfig_args} alias && _ret=0 732 ;; 733 "") 734 break 735 ;; 736 esac 737 alias=$((${alias} + 1)) 738 done 739 740 # backward compatibility: ipv6_ifconfig_IF_aliasN. 741 alias=0 742 while : ; do 743 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}` 744 case "${ifconfig_args}" in 745 "") 746 break 747 ;; 748 *) 749 ifconfig $1 inet6 ${ifconfig_args} alias && _ret=0 750 warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \ 751 " Use ifconfig_$1_aliasN instead." 752 ;; 753 esac 754 alias=$((${alias} + 1)) 755 done 756 757 return $_ret 758} 759 760# ifalias_down if af 761# Remove aliases for network interface $if. 762# It returns 0 if at least one alias was removed or 763# 1 if there were none. 764# 765ifalias_down() 766{ 767 local _ret 768 _ret=1 769 770 case "$2" in 771 inet) 772 _ret=`ifalias_ipv4_down "$1"` 773 ;; 774 inet6) 775 _ret=`ifalias_ipv6_down "$1"` 776 ;; 777 esac 778 779 return $_ret 780} 781 782# ifalias_ipv4_down if 783# Helper function for ifalias_down(). Handles IPv4. 784# 785ifalias_ipv4_down() 786{ 787 local _ret alias ifconfig_args 788 _ret=1 789 790 # ifconfig_IF_aliasN which starts with "inet" 791 alias=0 792 while : ; do 793 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 794 case "${ifconfig_args}" in 795 inet\ *) 796 ifconfig $1 ${ifconfig_args} -alias && _ret=0 797 ;; 798 "") 799 break 800 ;; 801 esac 802 alias=$((${alias} + 1)) 803 done 804 805 return $_ret 806} 807 808# ifalias_ipv6_down if 809# Helper function for ifalias_down(). Handles IPv6. 810# 811ifalias_ipv6_down() 812{ 813 local _ret alias ifconfig_args 814 _ret=1 815 816 # ifconfig_IF_aliasN which starts with "inet6" 817 alias=0 818 while : ; do 819 ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}` 820 case "${ifconfig_args}" in 821 inet6\ *) 822 ifconfig $1 ${ifconfig_args} -alias && _ret=0 823 ;; 824 "") 825 break 826 ;; 827 esac 828 alias=$((${alias} + 1)) 829 done 830 831 # backward compatibility: ipv6_ifconfig_IF_aliasN. 832 alias=0 833 while : ; do 834 ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}` 835 case "${ifconfig_args}" in 836 "") 837 break 838 ;; 839 *) 840 ifconfig $1 inet6 ${ifconfig_args} -alias && _ret=0 841 warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \ 842 " Use ifconfig_$1_aliasN instead." 843 ;; 844 esac 845 alias=$((${alias} + 1)) 846 done 847 848 return $_ret 849} 850 851# ipv6_prefix_hostid_addr_up if 852# add IPv6 prefix + hostid addr to the interface $if 853ipv6_prefix_hostid_addr_up() 854{ 855 local _if prefix laddr hostid j address 856 _if=$1 857 prefix=`get_if_var ${_if} ipv6_prefix_IF` 858 859 if [ -n "${prefix}" ]; then 860 laddr=`network6_getladdr ${_if}` 861 hostid=${laddr#fe80::} 862 hostid=${hostid%\%*} 863 864 for j in ${prefix}; do 865 address=$j\:${hostid} 866 ifconfig ${_if} inet6 ${address} prefixlen 64 alias 867 868 # if I am a router, add subnet router 869 # anycast address (RFC 2373). 870 if checkyesno ipv6_gateway_enable; then 871 ifconfig ${_if} inet6 $j:: prefixlen 64 \ 872 alias anycast 873 fi 874 done 875 fi 876} 877 878# ipv6_accept_rtadv_up if 879# Enable accepting Router Advertisement and send Router 880# Solicitation message 881ipv6_accept_rtadv_up() 882{ 883 if ipv6_autoconfif $1; then 884 ifconfig $1 inet6 accept_rtadv up 885 rtsol ${rtsol_flags} $1 886 fi 887} 888 889# ipv6_accept_rtadv_down if 890# Disable accepting Router Advertisement 891ipv6_accept_rtadv_down() 892{ 893 if ipv6_autoconfif $1; then 894 ifconfig $1 inet6 -accept_rtadv 895 fi 896} 897 898# ifscript_up if 899# Evaluate a startup script for the $if interface. 900# It returns 0 if a script was found and processed or 901# 1 if no script was found. 902# 903ifscript_up() 904{ 905 if [ -r /etc/start_if.$1 ]; then 906 . /etc/start_if.$1 907 return 0 908 else 909 return 1 910 fi 911} 912 913# ifscript_down if 914# Evaluate a shutdown script for the $if interface. 915# It returns 0 if a script was found and processed or 916# 1 if no script was found. 917# 918ifscript_down() 919{ 920 if [ -r /etc/stop_if.$1 ]; then 921 . /etc/stop_if.$1 922 return 0 923 else 924 return 1 925 fi 926} 927 928# clone_up 929# Create cloneable interfaces. 930# 931clone_up() 932{ 933 local _prefix _list ifn 934 _prefix= 935 _list= 936 937 # create_args_IF 938 for ifn in ${cloned_interfaces}; do 939 ifconfig ${ifn} create `get_if_var ${ifn} create_args_IF` 940 if [ $? -eq 0 ]; then 941 _list="${_list}${_prefix}${ifn}" 942 [ -z "$_prefix" ] && _prefix=' ' 943 fi 944 done 945 debug "Cloned: ${_list}" 946} 947 948# clone_down 949# Destroy cloned interfaces. Destroyed interfaces are echoed to 950# standard output. 951# 952clone_down() 953{ 954 local _prefix _list ifn 955 _prefix= 956 _list= 957 958 for ifn in ${cloned_interfaces}; do 959 ifconfig ${ifn} destroy 960 if [ $? -eq 0 ]; then 961 _list="${_list}${_prefix}${ifn}" 962 [ -z "$_prefix" ] && _prefix=' ' 963 fi 964 done 965 debug "Destroyed clones: ${_list}" 966} 967 968# childif_create 969# Create and configure child interfaces. Return 0 if child 970# interfaces are created. 971# 972childif_create() 973{ 974 local cfg child child_vlans child_wlans create_args debug_flags ifn i 975 cfg=1 976 ifn=$1 977 978 # Create wireless interfaces 979 child_wlans=`get_if_var $ifn wlans_IF` 980 981 for child in ${child_wlans}; do 982 create_args="wlandev $ifn `get_if_var $child create_args_IF`" 983 debug_flags="`get_if_var $child wlandebug_IF`" 984 985 if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then 986 ifconfig $child create ${create_args} && cfg=0 987 if [ -n "${debug_flags}" ]; then 988 wlandebug -i $child ${debug_flags} 989 fi 990 else 991 i=`ifconfig wlan create ${create_args}` 992 if [ -n "${debug_flags}" ]; then 993 wlandebug -i $i ${debug_flags} 994 fi 995 ifconfig $i name $child && cfg=0 996 fi 997 if autoif $child; then 998 ifn_start $child 999 fi 1000 done 1001 1002 # Create vlan interfaces 1003 child_vlans=`get_if_var $ifn vlans_IF` 1004 1005 if [ -n "${child_vlans}" ]; then 1006 load_kld if_vlan 1007 fi 1008 1009 for child in ${child_vlans}; do 1010 if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then 1011 child="${ifn}.${child}" 1012 create_args=`get_if_var $child create_args_IF` 1013 ifconfig $child create ${create_args} && cfg=0 1014 else 1015 create_args="vlandev $ifn `get_if_var $child create_args_IF`" 1016 if expr $child : 'vlan[0-9][0-9]*$' >/dev/null 2>&1; then 1017 ifconfig $child create ${create_args} && cfg=0 1018 else 1019 i=`ifconfig vlan create ${create_args}` 1020 ifconfig $i name $child && cfg=0 1021 fi 1022 fi 1023 if autoif $child; then 1024 ifn_start $child 1025 fi 1026 done 1027 1028 return ${cfg} 1029} 1030 1031# childif_destroy 1032# Destroy child interfaces. 1033# 1034childif_destroy() 1035{ 1036 local cfg child child_vlans child_wlans ifn 1037 cfg=1 1038 1039 child_wlans=`get_if_var $ifn wlans_IF` 1040 for child in ${child_wlans}; do 1041 if ! ifexists $child; then 1042 continue 1043 fi 1044 if autoif $child; then 1045 ifn_stop $child 1046 fi 1047 ifconfig $child destroy && cfg=0 1048 done 1049 1050 child_vlans=`get_if_var $ifn vlans_IF` 1051 for child in ${child_vlans}; do 1052 if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then 1053 child="${ifn}.${child}" 1054 fi 1055 if ! ifexists $child; then 1056 continue 1057 fi 1058 if autoif $child; then 1059 ifn_stop $child 1060 fi 1061 ifconfig $child destroy && cfg=0 1062 done 1063 1064 return ${cfg} 1065} 1066 1067# ng_mkpeer 1068# Create netgraph nodes. 1069# 1070ng_mkpeer() 1071{ 1072 ngctl -f - 2> /dev/null <<EOF 1073mkpeer $* 1074msg dummy nodeinfo 1075EOF 1076} 1077 1078# ng_create_one 1079# Create netgraph nodes. 1080# 1081ng_create_one() 1082{ 1083 local t 1084 1085 ng_mkpeer $* | while read line; do 1086 t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'` 1087 if [ -n "${t}" ]; then 1088 echo ${t} 1089 return 1090 fi 1091 done 1092} 1093 1094# gif_up 1095# Create gif(4) tunnel interfaces. 1096gif_up() 1097{ 1098 local i peers 1099 1100 for i in ${gif_interfaces}; do 1101 peers=`get_if_var $i gifconfig_IF` 1102 case ${peers} in 1103 '') 1104 continue 1105 ;; 1106 *) 1107 if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then 1108 ifconfig $i create >/dev/null 2>&1 1109 else 1110 gif=`ifconfig gif create` 1111 ifconfig $gif name $i 1112 fi 1113 ifconfig $i tunnel ${peers} 1114 ifconfig $i up 1115 ;; 1116 esac 1117 done 1118} 1119 1120# ng_fec_create ifn 1121# Configure Fast EtherChannel for interface $ifn. Returns 0 if 1122# FEC arguments were found and configured; returns !0 otherwise. 1123ng_fec_create() 1124{ 1125 local req_iface iface bogus 1126 req_iface="$1" 1127 1128 ngctl shutdown ${req_iface}: > /dev/null 2>&1 1129 1130 bogus="" 1131 while true; do 1132 iface=`ng_create_one fec dummy fec` 1133 if [ -z "${iface}" ]; then 1134 exit 2 1135 fi 1136 if [ "${iface}" = "${req_iface}" ]; then 1137 break 1138 fi 1139 bogus="${bogus} ${iface}" 1140 done 1141 1142 for iface in ${bogus}; do 1143 ngctl shutdown ${iface}: 1144 done 1145} 1146 1147# fec_up 1148# Create Fast EtherChannel interfaces. 1149fec_up() 1150{ 1151 local i j 1152 1153 for i in ${fec_interfaces}; do 1154 ng_fec_create $i 1155 for j in `get_if_var $i fecconfig_IF`; do 1156 case ${j} in 1157 '') 1158 continue 1159 ;; 1160 *) 1161 ngctl msg ${i}: add_iface "\"${j}\"" 1162 ;; 1163 esac 1164 done 1165 done 1166} 1167 1168# ipx_up ifn 1169# Configure any IPX addresses for interface $ifn. Returns 0 if 1170# IPX arguments were found and configured; returns 1 otherwise. 1171# 1172ipx_up() 1173{ 1174 local ifn 1175 ifn="$1" 1176 1177 # ifconfig_IF_ipx 1178 ifconfig_args=`_ifconfig_getargs $ifn ipx` 1179 if [ -n "${ifconfig_args}" ]; then 1180 ifconfig ${ifn} ${ifconfig_args} 1181 return 0 1182 fi 1183 1184 return 1 1185} 1186 1187# ipx_down ifn 1188# Remove IPX addresses for interface $ifn. Returns 0 if IPX 1189# addresses were found and unconfigured. It returns 1, otherwise. 1190# 1191ipx_down() 1192{ 1193 local _if _ifs _ret ipxList oldifs _ipx 1194 _if=$1 1195 _ifs="^" 1196 _ret=1 1197 ipxList="`ifconfig ${_if} | grep 'ipx ' | tr "\n" "$_ifs"`" 1198 oldifs="$IFS" 1199 1200 IFS="$_ifs" 1201 for _ipx in $ipxList ; do 1202 # get rid of extraneous line 1203 [ -z "$_ipx" ] && break 1204 1205 _ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'` 1206 1207 IFS="$oldifs" 1208 ifconfig ${_if} ${_ipx} delete 1209 IFS="$_ifs" 1210 _ret=0 1211 done 1212 IFS="$oldifs" 1213 1214 return $_ret 1215} 1216 1217# ifnet_rename 1218# Rename all requested interfaces. 1219# 1220ifnet_rename() 1221{ 1222 local _if _ifname 1223 1224 # ifconfig_IF_name 1225 for _if in `ifconfig -l`; do 1226 _ifname=`get_if_var $_if ifconfig_IF_name` 1227 if [ ! -z "$_ifname" ]; then 1228 ifconfig $_if name $_ifname 1229 fi 1230 done 1231 1232 return 0 1233} 1234 1235# list_net_interfaces type 1236# List all network interfaces. The type of interface returned 1237# can be controlled by the type argument. The type 1238# argument can be any of the following: 1239# nodhcp - all interfaces, excluding DHCP configured interfaces 1240# dhcp - list only DHCP configured interfaces 1241# noautoconf - all interfaces, excluding IPv6 Stateless 1242# Address Autoconf configured interfaces 1243# autoconf - list only IPv6 Stateless Address Autoconf 1244# configured interfaces 1245# If no argument is specified all network interfaces are output. 1246# Note that the list will include cloned interfaces if applicable. 1247# Cloned interfaces must already exist to have a chance to appear 1248# in the list if ${network_interfaces} is set to `auto'. 1249# 1250list_net_interfaces() 1251{ 1252 local type _tmplist _list _autolist _lo _if 1253 type=$1 1254 1255 # Get a list of ALL the interfaces and make lo0 first if it's there. 1256 # 1257 _tmplist= 1258 case ${network_interfaces} in 1259 [Aa][Uu][Tt][Oo]) 1260 _autolist="`ifconfig -l`" 1261 _lo= 1262 for _if in ${_autolist} ; do 1263 if autoif $_if; then 1264 if [ "$_if" = "lo0" ]; then 1265 _lo="lo0 " 1266 else 1267 _tmplist="${_tmplist} ${_if}" 1268 fi 1269 fi 1270 done 1271 _tmplist="${_lo}${_tmplist# }" 1272 ;; 1273 *) 1274 _tmplist="${network_interfaces} ${cloned_interfaces}" 1275 1276 # lo0 is effectively mandatory, so help prevent foot-shooting 1277 # 1278 case "$_tmplist" in 1279 lo0|'lo0 '*|*' lo0'|*' lo0 '*) ;; # This is fine, do nothing 1280 *) _tmplist="lo0 ${_tmplist}" ;; 1281 esac 1282 ;; 1283 esac 1284 1285 _list= 1286 case "$type" in 1287 nodhcp) 1288 for _if in ${_tmplist} ; do 1289 if ! dhcpif $_if && \ 1290 [ -n "`_ifconfig_getargs $_if`" ]; then 1291 _list="${_list# } ${_if}" 1292 fi 1293 done 1294 ;; 1295 dhcp) 1296 for _if in ${_tmplist} ; do 1297 if dhcpif $_if; then 1298 _list="${_list# } ${_if}" 1299 fi 1300 done 1301 ;; 1302 noautoconf) 1303 for _if in ${_tmplist} ; do 1304 if ! ipv6_autoconfif $_if && \ 1305 [ -n "`_ifconfig_getargs $_if ipv6`" ]; then 1306 _list="${_list# } ${_if}" 1307 fi 1308 done 1309 ;; 1310 autoconf) 1311 for _if in ${_tmplist} ; do 1312 if ipv6_autoconfif $_if; then 1313 _list="${_list# } ${_if}" 1314 fi 1315 done 1316 ;; 1317 *) 1318 _list=${_tmplist} 1319 ;; 1320 esac 1321 1322 echo $_list 1323 1324 return 0 1325} 1326 1327# get_default_if -address_family 1328# Get the interface of the default route for the given address family. 1329# The -address_family argument must be suitable passing to route(8). 1330# 1331get_default_if() 1332{ 1333 local routeget oldifs defif line 1334 defif= 1335 oldifs="$IFS" 1336 IFS=" 1337" 1338 for line in `route -n get $1 default 2>/dev/null`; do 1339 case $line in 1340 *interface:*) 1341 defif=${line##*: } 1342 ;; 1343 esac 1344 done 1345 IFS=${oldifs} 1346 1347 echo $defif 1348} 1349 1350# hexdigit arg 1351# Echo decimal number $arg (single digit) in hexadecimal format. 1352hexdigit() 1353{ 1354 if [ $1 -lt 10 ]; then 1355 echo $1 1356 else 1357 case $1 in 1358 10) echo a ;; 1359 11) echo b ;; 1360 12) echo c ;; 1361 13) echo d ;; 1362 14) echo e ;; 1363 15) echo f ;; 1364 esac 1365 fi 1366} 1367 1368# hexprint arg 1369# Echo decimal number $arg (multiple digits) in hexadecimal format. 1370hexprint() 1371{ 1372 local val str dig 1373 val=$1 1374 str='' 1375 dig=`hexdigit $((${val} & 15))` 1376 str=${dig}${str} 1377 val=$((${val} >> 4)) 1378 1379 while [ ${val} -gt 0 ]; do 1380 dig=`hexdigit $((${val} & 15))` 1381 str=${dig}${str} 1382 val=$((${val} >> 4)) 1383 done 1384 1385 echo ${str} 1386} 1387 1388is_wired_interface() 1389{ 1390 local media 1391 1392 case `ifconfig $1 2>/dev/null` in 1393 *media:?Ethernet*) media=Ethernet ;; 1394 esac 1395 1396 test "$media" = "Ethernet" 1397} 1398 1399# network6_getladdr if [flag] 1400# Echo link-local address from $if if any. 1401# If flag is defined, tentative ones will be excluded. 1402network6_getladdr() 1403{ 1404 local proto addr rest 1405 ifconfig $1 2>/dev/null | while read proto addr rest; do 1406 case ${proto} in 1407 inet6) 1408 case ${addr} in 1409 fe80::*) 1410 if [ -z "$2" ]; then 1411 echo ${addr} 1412 return 1413 fi 1414 case ${rest} in 1415 *tentative*) 1416 continue 1417 ;; 1418 *) 1419 echo ${addr} 1420 return 1421 esac 1422 esac 1423 esac 1424 done 1425} 1426