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Editing: network.subr
# # Copyright (c) 2003 The FreeBSD Project. All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # # $FreeBSD$ # IFCONFIG_CMD="/sbin/ifconfig" : ${netif_ipexpand_max:=2048} # # Subroutines commonly used from network startup scripts. # Requires that rc.conf be loaded first. # # ifn_start ifn # Bring up and configure an interface. If some configuration is # applied, print the interface configuration. # ifn_start() { local ifn cfg ifn="$1" cfg=1 [ -z "$ifn" ] && err 1 "ifn_start called without an interface" ifscript_up ${ifn} && cfg=0 ifconfig_up ${ifn} && cfg=0 if ! noafif $ifn; then afexists inet && ipv4_up ${ifn} && cfg=0 afexists inet6 && ipv6_up ${ifn} && cfg=0 fi childif_create ${ifn} && cfg=0 return $cfg } # ifn_stop ifn # Shutdown and de-configure an interface. If action is taken, # print the interface name. # ifn_stop() { local ifn cfg ifn="$1" cfg=1 [ -z "$ifn" ] && err 1 "ifn_stop called without an interface" if ! noafif $ifn; then afexists inet6 && ipv6_down ${ifn} && cfg=0 afexists inet && ipv4_down ${ifn} && cfg=0 fi ifconfig_down ${ifn} && cfg=0 ifscript_down ${ifn} && cfg=0 childif_destroy ${ifn} && cfg=0 return $cfg } # ifn_vnetup ifn # Move ifn to the specified vnet jail. # ifn_vnetup() { ifn_vnet0 $1 vnet } # ifn_vnetdown ifn # Reclaim ifn from the specified vnet jail. # ifn_vnetdown() { ifn_vnet0 $1 -vnet } # ifn_vnet0 ifn action # Helper function for ifn_vnetup and ifn_vnetdown. # ifn_vnet0() { local _ifn _cfg _action _vnet _ifn="$1" _action="$2" _cfg=1 if _vnet=$(vnetif $_ifn); then ${IFCONFIG_CMD} $_ifn $_action $_vnet && _cfg=0 fi return $_cfg } # ifconfig_up if # Evaluate ifconfig(8) arguments for interface $if and # run ifconfig(8) with those arguments. It returns 0 if # arguments were found and executed or 1 if the interface # had no arguments. Pseudo arguments DHCP and WPA are handled # here. # ifconfig_up() { local _cfg _ifconfig_descr _ipv6_opts ifconfig_args _cfg=1 # Make sure lo0 always comes up. if [ "$1" = "lo0" ]; then _cfg=0 fi # inet6 specific if ! noafif $1 && afexists inet6; then if checkyesno ipv6_activate_all_interfaces; then _ipv6_opts="-ifdisabled" fi # backward compatibility: $ipv6_enable case $ipv6_enable in [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) case $1 in bridge[0-9]*) # No accept_rtadv by default on if_bridge(4) # to avoid a conflict with the member # interfaces. ;; *) if ! checkyesno ipv6_gateway_enable; then _ipv6_opts="${_ipv6_opts} accept_rtadv" fi ;; esac ;; esac case $ipv6_cpe_wanif in $1) _ipv6_opts="${_ipv6_opts} -no_radr accept_rtadv" ;; esac if [ -n "${_ipv6_opts}" ]; then ${IFCONFIG_CMD} $1 inet6 ${_ipv6_opts} fi fi # ifconfig_IF ifconfig_args=`ifconfig_getargs $1` if [ -n "${ifconfig_args}" ]; then eval ${IFCONFIG_CMD} $1 ${ifconfig_args} _cfg=0 fi # inet6 specific if ! noafif $1 && afexists inet6; then # ifconfig_IF_ipv6 ifconfig_args=`ifconfig_getargs $1 ipv6` if [ -n "${ifconfig_args}" ]; then # backward compatibility: inet6 keyword case "${ifconfig_args}" in :*|[0-9a-fA-F]*:*) warn "\$ifconfig_$1_ipv6 needs leading" \ "\"inet6\" keyword for an IPv6 address." ifconfig_args="inet6 ${ifconfig_args}" ;; esac ${IFCONFIG_CMD} $1 inet6 -ifdisabled eval ${IFCONFIG_CMD} $1 ${ifconfig_args} _cfg=0 fi # $ipv6_prefix_IF will be handled in # ipv6_prefix_hostid_addr_common(). ifconfig_args=`get_if_var $1 ipv6_prefix_IF` if [ -n "${ifconfig_args}" ]; then ${IFCONFIG_CMD} $1 inet6 -ifdisabled _cfg=0 fi # backward compatibility: $ipv6_ifconfig_IF ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF` if [ -n "${ifconfig_args}" ]; then warn "\$ipv6_ifconfig_$1 is obsolete." \ " Use ifconfig_$1_ipv6 instead." ${IFCONFIG_CMD} $1 inet6 -ifdisabled eval ${IFCONFIG_CMD} $1 inet6 ${ifconfig_args} _cfg=0 fi fi ifalias $1 link alias ifalias $1 ether alias _ifconfig_descr=`get_if_var $1 ifconfig_IF_descr` if [ -n "${_ifconfig_descr}" ]; then ${IFCONFIG_CMD} $1 description "${_ifconfig_descr}" fi if wpaif $1; then /etc/rc.d/wpa_supplicant start $1 _cfg=0 # XXX: not sure this should count elif hostapif $1; then /etc/rc.d/hostapd start $1 _cfg=0 elif [ ${_cfg} -eq 0 ]; then ${IFCONFIG_CMD} $1 up fi if ! noafif $1 && afexists inet6; then ipv6_accept_rtadv_up $1 && _cfg=0 fi if dhcpif $1; then if [ $_cfg -ne 0 ] ; then ${IFCONFIG_CMD} $1 up fi if syncdhcpif $1; then /etc/rc.d/dhclient start $1 fi _cfg=0 fi return $_cfg } # ifconfig_down if # returns 1 if wpa_supplicant or dhclient was stopped or # the interface exists. # ifconfig_down() { local _cfg _cfg=1 if wpaif $1; then /etc/rc.d/wpa_supplicant stop $1 _cfg=0 elif hostapif $1; then /etc/rc.d/hostapd stop $1 _cfg=0 elif dhcpif $1; then /etc/rc.d/dhclient stop $1 _cfg=0 fi if ifexists $1; then ${IFCONFIG_CMD} $1 down _cfg=0 fi return $_cfg } # get_if_var if var [default] # Return the value of the pseudo-hash corresponding to $if where # $var is a string containg the sub-string "IF" which will be # replaced with $if after the characters defined in _punct are # replaced with '_'. If the variable is unset, replace it with # $default if given. get_if_var() { local _if _punct _punct_c _var _default prefix suffix if [ $# -ne 2 -a $# -ne 3 ]; then err 3 'USAGE: get_if_var name var [default]' fi _if=$1 _punct=".-/+" ltr ${_if} "${_punct}" '_' _if _var=$2 _default=$3 prefix=${_var%%IF*} suffix=${_var##*IF} eval echo \${${prefix}${_if}${suffix}-${_default}} } # _ifconfig_getargs if [af] # Prints the arguments for the supplied interface to stdout. # Returns 1 if empty. In general, ifconfig_getargs should be used # outside this file. _ifconfig_getargs() { local _ifn _af _ifn=$1 _af=${2+_$2} if [ -z "$_ifn" ]; then return 1 fi get_if_var $_ifn ifconfig_IF$_af "$ifconfig_DEFAULT" } # ifconfig_getargs if [af] # Takes the result from _ifconfig_getargs and removes pseudo # args such as DHCP and WPA. ifconfig_getargs() { local _tmpargs _arg _args _vnet _tmpargs=`_ifconfig_getargs $1 $2` if [ $? -eq 1 ]; then return 1 fi _args= _vnet=0 for _arg in $_tmpargs; do case $_arg:$_vnet in [Dd][Hh][Cc][Pp]:0) ;; [Nn][Oo][Aa][Uu][Tt][Oo]:0) ;; [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]:0) ;; [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]:0) ;; [Ww][Pp][Aa]:0) ;; [Hh][Oo][Ss][Tt][Aa][Pp]:0) ;; vnet:0) _vnet=1 ;; *:1) _vnet=0 ;; *:0) _args="$_args $_arg" ;; esac done echo $_args } # autoif # Returns 0 if the interface should be automatically configured at # boot time and 1 otherwise. autoif() { local _tmpargs _arg _tmpargs=`_ifconfig_getargs $1` for _arg in $_tmpargs; do case $_arg in [Nn][Oo][Aa][Uu][Tt][Oo]) return 1 ;; esac done return 0 } # dhcpif if # Returns 0 if the interface is a DHCP interface and 1 otherwise. dhcpif() { local _tmpargs _arg _tmpargs=`_ifconfig_getargs $1` case $1 in lo[0-9]*|\ stf[0-9]*|\ lp[0-9]*|\ sl[0-9]*) return 1 ;; esac if noafif $1; then return 1 fi for _arg in $_tmpargs; do case $_arg in [Dd][Hh][Cc][Pp]) return 0 ;; [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) return 0 ;; [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) return 0 ;; esac done return 1 } # syncdhcpif # Returns 0 if the interface should be configured synchronously and # 1 otherwise. syncdhcpif() { local _tmpargs _arg _tmpargs=`_ifconfig_getargs $1` if noafif $1; then return 1 fi for _arg in $_tmpargs; do case $_arg in [Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) return 1 ;; [Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) return 0 ;; esac done checkyesno synchronous_dhclient } # wpaif if # Returns 0 if the interface is a WPA interface and 1 otherwise. wpaif() { local _tmpargs _arg _tmpargs=`_ifconfig_getargs $1` for _arg in $_tmpargs; do case $_arg in [Ww][Pp][Aa]) return 0 ;; esac done return 1 } # hostapif if # Returns 0 if the interface is a HOSTAP interface and 1 otherwise. hostapif() { local _tmpargs _arg _tmpargs=`_ifconfig_getargs $1` for _arg in $_tmpargs; do case $_arg in [Hh][Oo][Ss][Tt][Aa][Pp]) return 0 ;; esac done return 1 } # vnetif if # Returns 0 and echo jail if "vnet" keyword is specified on the # interface, and 1 otherwise. vnetif() { local _tmpargs _arg _vnet _tmpargs=`_ifconfig_getargs $1` _vnet=0 for _arg in $_tmpargs; do case $_arg:$_vnet in vnet:0) _vnet=1 ;; *:1) echo $_arg; return 0 ;; esac done return 1 } # afexists af # Returns 0 if the address family is enabled in the kernel # 1 otherwise. afexists() { local _af _af=$1 case ${_af} in inet|inet6) check_kern_features ${_af} ;; link|ether) return 0 ;; *) err 1 "afexists(): Unsupported address family: $_af" ;; esac } # noafif if # Returns 0 if the interface has no af configuration and 1 otherwise. noafif() { local _if _if=$1 case $_if in pflog[0-9]*|\ pfsync[0-9]*|\ usbus[0-9]*|\ an[0-9]*|\ ath[0-9]*|\ ipw[0-9]*|\ ipfw[0-9]*|\ iwi[0-9]*|\ iwn[0-9]*|\ ral[0-9]*|\ wi[0-9]*|\ wl[0-9]*|\ wpi[0-9]*) return 0 ;; esac return 1 } # ipv6if if # Returns 0 if the interface should be configured for IPv6 and # 1 otherwise. ipv6if() { local _if _tmpargs i _if=$1 if ! afexists inet6; then return 1 fi # lo0 is always IPv6-enabled case $_if in lo0) return 0 ;; esac case "${ipv6_network_interfaces}" in $_if|"$_if "*|*" $_if"|*" $_if "*|[Aa][Uu][Tt][Oo]) # True if $ifconfig_IF_ipv6 is defined. _tmpargs=`_ifconfig_getargs $_if ipv6` if [ -n "${_tmpargs}" ]; then return 0 fi # True if $ipv6_prefix_IF is defined. _tmpargs=`get_if_var $_if ipv6_prefix_IF` if [ -n "${_tmpargs}" ]; then return 0 fi # backward compatibility: True if $ipv6_ifconfig_IF is defined. _tmpargs=`get_if_var $_if ipv6_ifconfig_IF` if [ -n "${_tmpargs}" ]; then return 0 fi ;; esac return 1 } # ipv6_autoconfif if # Returns 0 if the interface should be configured for IPv6 with # Stateless Address Configuration; 1 otherwise. ipv6_autoconfif() { local _if _tmpargs _arg _if=$1 case $_if in lo[0-9]*|\ stf[0-9]*|\ lp[0-9]*|\ sl[0-9]*) return 1 ;; esac if noafif $_if; then return 1 fi if ! ipv6if $_if; then return 1 fi if checkyesno ipv6_gateway_enable; then return 1 fi _tmpargs=`get_if_var $_if ipv6_prefix_IF` if [ -n "${_tmpargs}" ]; then return 1 fi # backward compatibility: $ipv6_enable case $ipv6_enable in [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) if checkyesno ipv6_gateway_enable; then return 1 fi case $1 in bridge[0-9]*) # No accept_rtadv by default on if_bridge(4) # to avoid a conflict with the member # interfaces. return 1 ;; *) return 0 ;; esac ;; esac _tmpargs=`_ifconfig_getargs $_if ipv6` for _arg in $_tmpargs; do case $_arg in accept_rtadv) return 0 ;; esac done # backward compatibility: $ipv6_ifconfig_IF _tmpargs=`get_if_var $_if ipv6_ifconfig_IF` for _arg in $_tmpargs; do case $_arg in accept_rtadv) return 0 ;; esac done return 1 } # ifexists if # Returns 0 if the interface exists and 1 otherwise. ifexists() { [ -z "$1" ] && return 1 ${IFCONFIG_CMD} -n $1 > /dev/null 2>&1 } # ipv4_up if # add IPv4 addresses to the interface $if ipv4_up() { local _if _ret _if=$1 _ret=1 # Add 127.0.0.1/8 to lo0 unless otherwise specified. if [ "${_if}" = "lo0" ]; then ifconfig_args=`get_if_var ${_if} ifconfig_IF` if [ -z "${ifconfig_args}" ]; then ${IFCONFIG_CMD} ${_if} inet 127.0.0.1/8 alias fi fi ifalias ${_if} inet alias && _ret=0 return $_ret } # ipv6_up if # add IPv6 addresses to the interface $if ipv6_up() { local _if _ret _if=$1 _ret=1 if ! ipv6if $_if; then return 0 fi ifalias ${_if} inet6 alias && _ret=0 ipv6_prefix_hostid_addr_common ${_if} alias && _ret=0 return $_ret } # ipv4_down if # remove IPv4 addresses from the interface $if ipv4_down() { local _if _ifs _ret inetList oldifs _inet _if=$1 _ifs="^" _ret=1 ifalias ${_if} inet -alias && _ret=0 inetList="`${IFCONFIG_CMD} ${_if} | grep 'inet ' | tr "\n\t" "$_ifs"`" oldifs="$IFS" IFS="$_ifs" for _inet in $inetList ; do # get rid of extraneous line case $_inet in inet\ *) ;; *) continue ;; esac _inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'` IFS="$oldifs" ${IFCONFIG_CMD} ${_if} ${_inet} delete IFS="$_ifs" _ret=0 done IFS="$oldifs" return $_ret } # ipv6_down if # remove IPv6 addresses from the interface $if ipv6_down() { local _if _ifs _ret inetList oldifs _inet6 _if=$1 _ifs="^" _ret=1 if ! ipv6if $_if; then return 0 fi ipv6_accept_rtadv_down ${_if} && _ret=0 ipv6_prefix_hostid_addr_common ${_if} -alias && _ret=0 ifalias ${_if} inet6 -alias && _ret=0 inetList="`${IFCONFIG_CMD} ${_if} | grep 'inet6 ' | tr "\n\t" "$_ifs"`" oldifs="$IFS" IFS="$_ifs" for _inet6 in $inetList ; do # get rid of extraneous line case $_inet6 in inet6\ *) ;; *) continue ;; esac _inet6=`expr "$_inet6" : '.*\(inet6 \([0-9a-f:]*\)\).*'` IFS="$oldifs" ${IFCONFIG_CMD} ${_if} ${_inet6} -alias IFS="$_ifs" _ret=0 done IFS="$oldifs" return $_ret } # ifalias if af action # Configure or remove aliases for network interface $if. # It returns 0 if at least one alias was configured or # removed, or 1 if there were none. # ifalias() { local _ret _ret=1 afexists $2 || return $_ret case "$2" in inet|inet6|link|ether) ifalias_af_common $1 $2 $3 && _ret=0 ;; esac return $_ret } # ifalias_expand_addr af action addr # Expand address range ("N-M") specification in addr. # "addr" must not include an address-family keyword. # The results will include an address-family keyword. # ifalias_expand_addr() { local _af _action _af=$1 _action=$2 shift 2 afexists $_af || return ifalias_expand_addr_$_af $_action $* } # ifalias_expand_addr_inet action addr # Helper function for ifalias_expand_addr(). Handles IPv4. # ifalias_expand_addr_inet() { local _action _arg _cidr _cidr_addr _exargs local _ipaddr _plen _range _iphead _iptail _iplow _iphigh _ipcount local _retstr _c _action=$1 _arg=$2 shift 2 _exargs=$* _retstr= case $_action:$_arg:$_exargs in *:*--*) return ;; # invalid tmp:*[0-9]-[0-9]*:*) # to be expanded _action="alias" ;; *:*[0-9]-[0-9]*:*) # to be expanded ;; tmp:*:*netmask*) # already expanded w/ netmask option echo ${_arg%/[0-9]*} $_exargs && return ;; tmp:*:*) # already expanded w/o netmask option echo $_arg $_exargs && return ;; *:*:*netmask*) # already expanded w/ netmask option echo inet ${_arg%/[0-9]*} $_exargs && return ;; *:*:*) # already expanded w/o netmask option echo inet $_arg $_exargs && return ;; esac for _cidr in $_arg; do _ipaddr=${_cidr%%/*} _plen=${_cidr##*/} # When subnet prefix length is not specified, use /32. case $_plen in $_ipaddr) _plen=32 ;; # "/" character not found esac OIFS=$IFS IFS=. set -- $_ipaddr _range= _iphead= _iptail= for _c in $@; do case $_range:$_c in :[0-9]*-[0-9]*) _range=$_c ;; :*) _iphead="${_iphead}${_iphead:+.}${_c}" ;; *:*) _iptail="${_iptail}${_iptail:+.}${_c}" ;; esac done IFS=$OIFS _iplow=${_range%-*} _iphigh=${_range#*-} # clear netmask when removing aliases if [ "$_action" = "-alias" ]; then _plen="" fi _ipcount=$_iplow while [ "$_ipcount" -le "$_iphigh" ]; do _retstr="${_retstr} ${_iphead}${_iphead:+.}${_ipcount}${_iptail:+.}${_iptail}${_plen:+/}${_plen}" if [ $_ipcount -gt $(($_iplow + $netif_ipexpand_max)) ]; then warn "Range specification is too large (${_iphead}${_iphead:+.}${_iplow}${_iptail:+.}${_iptail}-${_iphead}${_iphead:+.}${_iphigh}${_iptail:+.}${_iptail}). ${_iphead}${_iphead:+.}${_iplow}${_iptail:+.}${_iptail}-${_iphead}${_iphead:+.}${_ipcount}${_iptail:+.}${_iptail} was processed. Increase \$netif_ipexpand_max in rc.conf." break else _ipcount=$(($_ipcount + 1)) fi # Forcibly set /32 for remaining aliases. _plen=32 done done for _c in $_retstr; do ifalias_expand_addr_inet $_action $_c $_exargs done } # ifalias_expand_addr_inet6 action addr # Helper function for ifalias_expand_addr(). Handles IPv6. # ifalias_expand_addr_inet6() { local _action _arg _cidr _cidr_addr _exargs local _ipaddr _plen _ipleft _ipright _iplow _iphigh _ipcount local _ipv4part local _retstr _c _action=$1 _arg=$2 shift 2 _exargs=$* _retstr= case $_action:$_arg:$_exargs in *:*--*:*) return ;; # invalid tmp:*[0-9a-zA-Z]-[0-9a-zA-Z]*:*)# to be expanded _action="alias" ;; *:*[0-9a-zA-Z]-[0-9a-zA-Z]*:*) # to be expanded ;; tmp:*:*prefixlen*) # already expanded w/ prefixlen option echo ${_arg%/[0-9]*} $_exargs && return ;; tmp:*:*) # already expanded w/o prefixlen option echo $_arg $_exargs && return ;; *:*:*prefixlen*) # already expanded w/ prefixlen option echo inet6 ${_arg%/[0-9]*} $_exargs && return ;; *:*:*) # already expanded w/o prefixlen option echo inet6 $_arg $_exargs && return ;; esac for _cidr in $_arg; do _ipaddr="${_cidr%%/*}" _plen="${_cidr##*/}" case $_action:$_ipaddr:$_cidr in -alias:*:*) unset _plen ;; *:$_cidr:$_ipaddr) unset _plen ;; esac if [ "${_ipaddr%:*.*.*.*}" = "$_ipaddr" ]; then # Handle !v4mapped && !v4compat addresses. # The default prefix length is 64. case $_ipaddr:$_cidr in $_cidr:$_ipaddr) _plen="64" ;; esac _ipleft=${_ipaddr%-*} _ipright=${_ipaddr#*-} _iplow=${_ipleft##*:} _iphigh=${_ipright%%:*} _ipleft=${_ipleft%:*} _ipright=${_ipright#*:} if [ "$_iphigh" = "$_ipright" ]; then unset _ipright else _ipright=:$_ipright fi if [ -n "$_iplow" -a -n "$_iphigh" ]; then _iplow=$((0x$_iplow)) _iphigh=$((0x$_iphigh)) _ipcount=$_iplow while [ $_ipcount -le $_iphigh ]; do _r=`printf "%s:%04x%s%s" \ $_ipleft $_ipcount $_ipright \ ${_plen:+/}$_plen` _retstr="$_retstr $_r" if [ $_ipcount -gt $(($_iplow + $netif_ipexpand_max)) ] then warn "Range specification is too large $(printf '(%s:%x%s-%s:%x%s)' "$_ipleft" "$_iplow" "$_ipright" "$_ipleft" "$_iphigh" "$_ipright"). $(printf '%s:%x%s-%s:%x%s' "$_ipleft" "$_iplow" "$_ipright" "$_ipleft" "$_ipcount" "$_ipright") was processed. Increase \$netif_ipexpand_max in rc.conf." break else _ipcount=$(($_ipcount + 1)) fi done else _retstr="${_ipaddr}${_plen:+/}${_plen}" fi for _c in $_retstr; do ifalias_expand_addr_inet6 $_action $_c $_exargs done else # v4mapped/v4compat should handle as an IPv4 alias _ipv4part=${_ipaddr##*:} # Adjust prefix length if any. If not, set the # default prefix length as 32. case $_ipaddr:$_cidr in $_cidr:$_ipaddr) _plen=32 ;; *) _plen=$(($_plen - 96)) ;; esac _retstr=`ifalias_expand_addr_inet \ tmp ${_ipv4part}${_plen:+/}${_plen}` for _c in $_retstr; do ifalias_expand_addr_inet $_action $_c $_exargs done fi done } # ifalias_af_common_handler if af action args # Helper function for ifalias_af_common(). # ifalias_af_common_handler() { local _ret _if _af _action _args _c _tmpargs _ret=1 _if=$1 _af=$2 _action=$3 shift 3 _args=$* case $_args in ${_af}\ *) ;; *) return ;; esac # link(ether) does not support address removal. case $_af:$_action in link:-alias|ether:-alias) return ;; esac _tmpargs= for _c in $_args; do case $_c in ${_af}) case $_tmpargs in ${_af}\ *[0-9a-fA-F]-*) ifalias_af_common_handler $_if $_af $_action \ `ifalias_expand_addr $_af $_action ${_tmpargs#${_af}\ }` ;; ${_af}\ *) ${IFCONFIG_CMD} $_if $_tmpargs $_action && _ret=0 ;; esac _tmpargs=$_af ;; *) _tmpargs="$_tmpargs $_c" ;; esac done # Process the last component if any. if [ -n "$_tmpargs}" ]; then case $_tmpargs in ${_af}\ *[0-9a-fA-F]-*) ifalias_af_common_handler $_if $_af $_action \ `ifalias_expand_addr $_af $_action ${_tmpargs#${_af}\ }` ;; ${_af}\ *) ${IFCONFIG_CMD} $_if $_tmpargs $_action && _ret=0 ;; esac fi return $_ret } # ifalias_af_common if af action # Helper function for ifalias(). # ifalias_af_common() { local _ret _if _af _action alias ifconfig_args _aliasn _c _tmpargs _iaf local _vif _punct=".-/+" _ret=1 _aliasn= _if=$1 _af=$2 _action=$3 # Normalize $_if before using it in a pattern to list_vars() ltr "$_if" "$_punct" "_" _vif # ifconfig_IF_aliasN which starts with $_af for alias in `list_vars ifconfig_${_vif}_alias[0-9]\* | sort_lite -nk1.$((9+${#_vif}+7))` do eval ifconfig_args=\"\$$alias\" _iaf= case $ifconfig_args in inet\ *) _iaf=inet ;; inet6\ *) _iaf=inet6 ;; link\ *) _iaf=link ;; ether\ *) _iaf=ether ;; esac case ${_af}:${_action}:${_iaf}:"${ifconfig_args}" in ${_af}:*:${_af}:*) _aliasn="$_aliasn $ifconfig_args" ;; ${_af}:*:"":"") break ;; inet:alias:"":*) _aliasn="$_aliasn inet $ifconfig_args" warn "\$${alias} needs leading" \ "\"inet\" keyword for an IPv4 address." esac done # backward compatibility: ipv6_ifconfig_IF_aliasN. case $_af in inet6) for alias in `list_vars ipv6_ifconfig_${_vif}_alias[0-9]\* | sort_lite -nk1.$((14+${#_vif}+7))` do eval ifconfig_args=\"\$$alias\" case ${_action}:"${ifconfig_args}" in *:"") break ;; alias:*) _aliasn="${_aliasn} inet6 ${ifconfig_args}" warn "\$${alias} is obsolete. " \ "Use ifconfig_${_vif}_aliasN instead." ;; esac done esac # backward compatibility: ipv4_addrs_IF. for _tmpargs in `get_if_var $_if ipv4_addrs_IF`; do _aliasn="$_aliasn inet $_tmpargs" done # Handle ifconfig_IF_aliases, ifconfig_IF_aliasN, and the others. _tmpargs= for _c in `get_if_var $_if ifconfig_IF_aliases` $_aliasn; do case $_c in inet|inet6|link|ether) case $_tmpargs in ${_af}\ *) eval ifalias_af_common_handler $_if $_af $_action $_tmpargs && _ret=0 ;; esac _tmpargs=$_c ;; *) _tmpargs="$_tmpargs $_c" esac done # Process the last component case $_tmpargs in ${_af}\ *) ifalias_af_common_handler $_if $_af $_action $_tmpargs && _ret=0 ;; esac return $_ret } # ipv6_prefix_hostid_addr_common if action # Add or remove IPv6 prefix + hostid addr on the interface $if # ipv6_prefix_hostid_addr_common() { local _if _action prefix j _if=$1 _action=$2 prefix=`get_if_var ${_if} ipv6_prefix_IF` if [ -n "${prefix}" ]; then for j in ${prefix}; do # The default prefixlen is 64. plen=${j#*/} case $j:$plen in $plen:$j) plen=64 ;; *) j=${j%/*} ;; esac # Normalize the last part by removing ":" j=${j%::*} j=${j%:} ${IFCONFIG_CMD} ${_if} inet6 $j:: \ prefixlen $plen eui64 ${_action} # if I am a router, add subnet router # anycast address (RFC 2373). if checkyesno ipv6_gateway_enable; then ${IFCONFIG_CMD} ${_if} inet6 $j:: \ prefixlen $plen ${_action} anycast fi done fi } # ipv6_accept_rtadv_up if # Enable accepting Router Advertisement and send Router # Solicitation message ipv6_accept_rtadv_up() { if ipv6_autoconfif $1; then ${IFCONFIG_CMD} $1 inet6 accept_rtadv up if [ -x /sbin/rtsol ]; then /sbin/rtsol ${rtsol_flags} $1 fi return 0 fi return 1 } # ipv6_accept_rtadv_down if # Disable accepting Router Advertisement ipv6_accept_rtadv_down() { if ipv6_autoconfif $1; then ${IFCONFIG_CMD} $1 inet6 -accept_rtadv fi } # ifscript_up if # Evaluate a startup script for the $if interface. # It returns 0 if a script was found and processed or # 1 if no script was found. # ifscript_up() { if [ -r /etc/start_if.$1 ]; then . /etc/start_if.$1 return 0 else return 1 fi } # ifscript_down if # Evaluate a shutdown script for the $if interface. # It returns 0 if a script was found and processed or # 1 if no script was found. # ifscript_down() { if [ -r /etc/stop_if.$1 ]; then . /etc/stop_if.$1 return 0 else return 1 fi } # wlan_up # Create IEEE802.11 interfaces. # wlan_up() { local _list _iflist parent child_wlans child create_args debug_flags _list= _iflist=$* # Parse wlans_$parent="$child ..." for parent in `set | sed -nE 's/wlans_([a-z]+[0-9]+)=.*/\1/p'`; do child_wlans=`get_if_var $parent wlans_IF` for child in ${child_wlans}; do create_args="wlandev $parent `get_if_var $child create_args_IF`" debug_flags="`get_if_var $child wlandebug_IF`" case $_iflist in ""|$child|$child\ *|*\ $child\ *|*\ $child) ;; *) continue ;; esac # Skip if ${child} already exists. if ${IFCONFIG_CMD} $child > /dev/null 2>&1; then continue fi if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then ${IFCONFIG_CMD} $child create ${create_args} && cfg=0 else ${IFCONFIG_CMD} wlan create ${create_args} name $child && cfg=0 fi if [ $? -eq 0 ]; then _list="$_list $child" fi if [ -n "${debug_flags}" ]; then wlandebug -i $child ${debug_flags} fi done done if [ -n "${_list# }" ]; then echo "Created wlan(4) interfaces: ${_list# }." fi debug "Created wlan(4)s: ${_list# }" } # wlan_down # Destroy IEEE802.11 interfaces. # wlan_down() { local _list _iflist parent child_wlans child _list= _iflist=$* # Parse wlans_$parent="$child ..." for parent in `set | sed -nE 's/wlans_([a-z]+[0-9]+)=.*/\1/p'`; do child_wlans=`get_if_var $parent wlans_IF` for child in ${child_wlans}; do case $_iflist in ""|$child|$child\ *|*\ $child\ *|*\ $child) ;; *) continue ;; esac # Skip if ${child} doesn't exists. if ! ${IFCONFIG_CMD} $child > /dev/null 2>&1; then continue fi ${IFCONFIG_CMD} -n ${child} destroy if [ $? -eq 0 ]; then _list="$_list $child" fi done done if [ -n "${_list# }" ]; then echo "Destroyed wlan(4) interfaces: ${_list# }." fi debug "Destroyed wlan(4)s: ${_list# }" } # clone_up # Create cloneable interfaces. # clone_up() { local _list ifn ifopt _iflist _inet6 _n tmpargs _list= _iflist=$* # create_args_IF for ifn in ${cloned_interfaces}; do # Parse ifn:ifopt. OIFS=$IFS; IFS=:; set -- $ifn; ifn=$1; ifopt=$2; IFS=$OIFS case $_iflist in ""|$ifn|$ifn\ *|*\ $ifn\ *|*\ $ifn) ;; *) continue ;; esac case $ifn in epair[0-9]*) # epair(4) uses epair[0-9] for creation and # epair[0-9][ab] for configuration. # # Skip if ${ifn}a or ${ifn}b already exist. if ${IFCONFIG_CMD} ${ifn}a > /dev/null 2>&1; then continue elif ${IFCONFIG_CMD} ${ifn}b > /dev/null 2>&1; then continue fi ${IFCONFIG_CMD} ${ifn} create \ `get_if_var ${ifn} create_args_IF` if [ $? -eq 0 ]; then _list="$_list ${ifn}a ${ifn}b" fi ;; *) # Skip if ${ifn} already exists. if ${IFCONFIG_CMD} $ifn > /dev/null 2>&1; then continue fi ${IFCONFIG_CMD} ${ifn} create \ `get_if_var ${ifn} create_args_IF` if [ $? -eq 0 ]; then _list="$_list $ifn" fi esac done for ifn in ${gif_interfaces}; do # Parse ifn:ifopt. OIFS=$IFS; IFS=:; set -- $ifn; ifn=$1; ifopt=$2; IFS=$OIFS case $_iflist in ""|$ifn|$ifn\ *|*\ $ifn\ *|*\ $ifn) ;; *) continue ;; esac # Skip if ifn already exists. if ${IFCONFIG_CMD} $ifn > /dev/null 2>&1; then continue fi case $ifn in gif[0-9]*) ${IFCONFIG_CMD} $ifn create ;; *) _n=$(${IFCONFIG_CMD} gif create) ${IFCONFIG_CMD} $_n name $ifn ;; esac if [ $? -eq 0 ]; then _list="$_list $ifn" tmpargs=$(get_if_var $ifn gifconfig_IF) _inet6='' case "$tmpargs" in '') ;; inet6[[:space:]]*) tmpargs=${tmpargs#inet6} _inet6=inet6 # FALLTHROUGH ;& *) ${IFCONFIG_CMD} $ifn $_inet6 tunnel $tmpargs ;; esac fi done if [ -n "${_list# }" ]; then echo "Created clone interfaces: ${_list# }." fi debug "Cloned: ${_list# }" } # clone_down # Destroy cloned interfaces. Destroyed interfaces are echoed to # standard output. # clone_down() { local _list ifn _difn ifopt _iflist _sticky _list= _iflist=$* : ${cloned_interfaces_sticky:=NO} if checkyesno cloned_interfaces_sticky; then _sticky=1 else _sticky=0 fi for ifn in ${cloned_interfaces} ${gif_interfaces}; do # Parse ifn:ifopt. OIFS=$IFS; IFS=:; set -- $ifn; ifn=$1; ifopt=$2; IFS=$OIFS case $ifopt:$_sticky in sticky:*) continue ;; # :sticky => not destroy nosticky:*) ;; # :nosticky => destroy *:1) continue ;; # global sticky knob == 1 esac case $_iflist in ""|$ifn|$ifn\ *|*\ $ifn\ *|*\ $ifn) ;; *) continue ;; esac case $ifn in epair[0-9]*) # Note: epair(4) uses epair[0-9] for removal and # epair[0-9][ab] for configuration. # # Skip if both of ${ifn}a and ${ifn}b do not exist. if ${IFCONFIG_CMD} ${ifn}a > /dev/null 2>&1; then _difn=${ifn}a elif ${IFCONFIG_CMD} ${ifn}b > /dev/null 2>&1; then _difn=${ifn}b else continue fi ${IFCONFIG_CMD} -n $_difn destroy if [ $? -eq 0 ]; then _list="$_list ${ifn}a ${ifn}b" fi ;; *) # Skip if ifn does not exist. if ! ${IFCONFIG_CMD} $ifn > /dev/null 2>&1; then continue fi ${IFCONFIG_CMD} -n ${ifn} destroy if [ $? -eq 0 ]; then _list="$_list $ifn" fi ;; esac done if [ -n "${_list# }" ]; then echo "Destroyed clone interfaces: ${_list# }." fi debug "Destroyed clones: ${_list# }" } # childif_create # Create and configure child interfaces. Return 0 if child # interfaces are created. # childif_create() { local cfg child child_vlans create_args debug_flags ifn i cfg=1 ifn=$1 # Create vlan interfaces child_vlans=`get_if_var $ifn vlans_IF` if [ -n "${child_vlans}" ]; then load_kld if_vlan fi for child in ${child_vlans}; do if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then child="${ifn}.${child}" create_args=`get_if_var $child create_args_IF` ${IFCONFIG_CMD} $child create ${create_args} && cfg=0 else create_args="vlandev $ifn `get_if_var $child create_args_IF`" if expr $child : 'vlan[0-9][0-9]*$' >/dev/null 2>&1; then ${IFCONFIG_CMD} $child create ${create_args} && cfg=0 else i=`${IFCONFIG_CMD} vlan create ${create_args}` ${IFCONFIG_CMD} $i name $child && cfg=0 fi fi if autoif $child; then ifn_start $child fi done return ${cfg} } # childif_destroy # Destroy child interfaces. # childif_destroy() { local cfg child child_vlans ifn cfg=1 child_vlans=`get_if_var $ifn vlans_IF` for child in ${child_vlans}; do if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then child="${ifn}.${child}" fi if ! ifexists $child; then continue fi ${IFCONFIG_CMD} -n $child destroy && cfg=0 done return ${cfg} } # ng_mkpeer # Create netgraph nodes. # ng_mkpeer() { ngctl -f - 2> /dev/null <<EOF mkpeer $* msg dummy nodeinfo EOF } # ng_create_one # Create netgraph nodes. # ng_create_one() { local t ng_mkpeer $* | while read line; do t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'` if [ -n "${t}" ]; then echo ${t} return fi done } # ifnet_rename [ifname] # Rename interfaces if ifconfig_IF_name is defined. # ifnet_rename() { local _if _ifname # ifconfig_IF_name for _if in ${*:-$(${IFCONFIG_CMD} -l)}; do _ifname=`get_if_var $_if ifconfig_IF_name` if [ ! -z "$_ifname" ]; then ${IFCONFIG_CMD} $_if name $_ifname fi done return 0 } # list_net_interfaces type # List all network interfaces. The type of interface returned # can be controlled by the type argument. The type # argument can be any of the following: # nodhcp - all interfaces, excluding DHCP configured interfaces # dhcp - list only DHCP configured interfaces # noautoconf - all interfaces, excluding IPv6 Stateless # Address Autoconf configured interfaces # autoconf - list only IPv6 Stateless Address Autoconf # configured interfaces # If no argument is specified all network interfaces are output. # Note that the list will include cloned interfaces if applicable. # Cloned interfaces must already exist to have a chance to appear # in the list if ${network_interfaces} is set to `auto'. # list_net_interfaces() { local type _tmplist _list _autolist _lo _if type=$1 # Get a list of ALL the interfaces and make lo0 first if it's there. # _tmplist= case ${network_interfaces} in [Aa][Uu][Tt][Oo]) _autolist="`${IFCONFIG_CMD} -l`" _lo= for _if in ${_autolist} ; do if autoif $_if; then if [ "$_if" = "lo0" ]; then _lo="lo0 " else _tmplist="${_tmplist} ${_if}" fi fi done _tmplist="${_lo}${_tmplist# }" ;; *) for _if in ${network_interfaces} ${cloned_interfaces}; do # epair(4) uses epair[0-9] for creation and # epair[0-9][ab] for configuration. case $_if in epair[0-9]*) _tmplist="$_tmplist ${_if}a ${_if}b" ;; *) _tmplist="$_tmplist $_if" ;; esac done # # lo0 is effectively mandatory, so help prevent foot-shooting # case "$_tmplist" in lo0|'lo0 '*|*' lo0'|*' lo0 '*) # This is fine, do nothing _tmplist="${_tmplist# }" ;; *) _tmplist="lo0 ${_tmplist# }" ;; esac ;; esac _list= case "$type" in nodhcp) for _if in ${_tmplist} ; do if ! dhcpif $_if && \ [ -n "`_ifconfig_getargs $_if`" ]; then _list="${_list# } ${_if}" fi done ;; dhcp) for _if in ${_tmplist} ; do if dhcpif $_if; then _list="${_list# } ${_if}" fi done ;; noautoconf) for _if in ${_tmplist} ; do if ! ipv6_autoconfif $_if && \ [ -n "`_ifconfig_getargs $_if ipv6`" ]; then _list="${_list# } ${_if}" fi done ;; autoconf) for _if in ${_tmplist} ; do if ipv6_autoconfif $_if; then _list="${_list# } ${_if}" fi done ;; *) _list=${_tmplist} ;; esac echo $_list return 0 } # get_default_if -address_family # Get the interface of the default route for the given address family. # The -address_family argument must be suitable passing to route(8). # get_default_if() { local routeget oldifs defif line defif= oldifs="$IFS" IFS=" " for line in `route -n get $1 default 2>/dev/null`; do case $line in *interface:*) defif=${line##*: } ;; esac done IFS=${oldifs} echo $defif } # hexdigit arg # Echo decimal number $arg (single digit) in hexadecimal format. hexdigit() { printf '%x\n' "$1" } # hexprint arg # Echo decimal number $arg (multiple digits) in hexadecimal format. hexprint() { printf '%x\n' "$1" } is_wired_interface() { local media case `${IFCONFIG_CMD} $1 2>/dev/null` in *media:?Ethernet*) media=Ethernet ;; esac test "$media" = "Ethernet" } # network6_getladdr if [flag] # Echo link-local address from $if if any. # If flag is defined, tentative ones will be excluded. network6_getladdr() { local _if _flag proto addr rest _if=$1 _flag=$2 ${IFCONFIG_CMD} $_if 2>/dev/null | while read proto addr rest; do case "${proto}/${addr}/${_flag}/${rest}" in inet6/fe80::*//*) echo ${addr} ;; inet6/fe80:://*tentative*) # w/o flag sleep `${SYSCTL_N} net.inet6.ip6.dad_count` network6_getladdr $_if $_flags ;; inet6/fe80::/*/*tentative*) # w/ flag echo ${addr} ;; *) continue ;; esac return done }
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