freebsd-dev/etc/network.subr

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#
# 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.
#
1999-08-27 23:37:10 +00:00
# $FreeBSD$
#
#
# Subroutines commonly used from network startup scripts.
# Requires that rc.conf be loaded first.
#
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# ifn_start ifn
# Bring up and configure an interface. If some configuration is
# applied print the interface configuration.
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#
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
ipv4_up ${ifn} && cfg=0
ipv6_up ${ifn} && cfg=0
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ipx_up ${ifn} && cfg=0
childif_create ${ifn} && cfg=0
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return $cfg
}
# ifn_stop ifn
# Shutdown and de-configure an interface. If action is taken
# print the interface name.
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#
ifn_stop()
{
local ifn cfg
ifn="$1"
cfg=1
[ -z "$ifn" ] && err 1 "ifn_stop called without an interface"
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ipx_down ${ifn} && cfg=0
ipv6_down ${ifn} && cfg=0
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ipv4_down ${ifn} && cfg=0
ifconfig_down ${ifn} && cfg=0
ifscript_down ${ifn} && cfg=0
childif_destroy ${ifn} && cfg=0
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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 _ipv6_opts ifconfig_args
_cfg=1
# ifconfig_IF
ifconfig_args=`ifconfig_getargs $1`
if [ -n "${ifconfig_args}" ]; then
ifconfig $1 ${ifconfig_args}
_cfg=0
fi
# inet6 specific
if afexists inet6; then
if ipv6if $1; then
if checkyesno ipv6_gateway_enable; then
_ipv6_opts="-accept_rtadv"
Improve the handling of IPv6 configuration in rc.d. The ipv6_enable and ipv6_ifconfig_<interface> options have already been deprecated, these changes do not alter that. With these changes any value set for ipv6_enable will emit a warning. In order to avoid a POLA violation for the deprecation of the option ipv6_enable=NO will still disable configuration for all interfaces other than lo0. ipv6_enable=YES will not have any effect, but will emit an additional warning. Support and warnings for this option will be removed in FreeBSD 10.x. Consistent with the current code, in order for IPv6 to be configured on an interface (other than lo0) an ifconfig_<interface>_ipv6 option will have to be added to /etc/rc.conf[.local]. 1. Clean up and minor optimizations for the following functions: ifconfig_up (the ipv6 elements) ipv6if ipv6_autoconfif get_if_var _ifconfig_getargs The cleanups generally were to move the "easy" tests earlier in the functions, and consolidate duplicate code. 2. Stop overloading ipv6_prefer with the ability to disable IPv6 configuration. 3. Remove noafif() which was only ever called from ipv6_autoconfif. Instead, simplify and integrate the tests into that function, and convert the test to use is_wired_interface() instead of listing wireless interfaces explicitly. 4. Integrate backwards compatibility for ipv6_ifconfig_<interface> into _ifconfig_getargs. This dramatically simplifies the code in all of the callers, and avoids a lot of other code duplication. 5. In rc.d/netoptions, add code for an ipv6_privacy option to use RFC 4193 style pseudo-random addresses (this is what windows does by default, FYI). 6. Add support for the [NO]RTADV options in ifconfig_getargs() and ipv6_autoconfif(). In the latter, include support for the explicit addition of [-]accept_rtadv in ifconfig_<interface>_ipv6 as is done in the current code. 7. In rc.d/netif add a warning if $ipv6_enable is set, and remove the set_rcvar_obsolete for it. Also remove the latter from rc.d/ip6addrctl. 8. In /etc/defaults/rc.conf: Add an example for RTADV configuration. Set ipv6_network_interfaces to AUTO. Switch ipv6_prefer to YES. If ipv6_enable is not set this will have no effect. Add a default for ipv6_privacy (NO). 9. Document all of this in rc.conf.5.
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fi
else
if checkyesno ipv6_activate_all_interfaces; then
_ipv6_opts="-ifdisabled"
else
_ipv6_opts="ifdisabled"
fi
# backward compatibility: $ipv6_enable
case $ipv6_enable in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
_ipv6_opts="${_ipv6_opts} accept_rtadv"
Improve the handling of IPv6 configuration in rc.d. The ipv6_enable and ipv6_ifconfig_<interface> options have already been deprecated, these changes do not alter that. With these changes any value set for ipv6_enable will emit a warning. In order to avoid a POLA violation for the deprecation of the option ipv6_enable=NO will still disable configuration for all interfaces other than lo0. ipv6_enable=YES will not have any effect, but will emit an additional warning. Support and warnings for this option will be removed in FreeBSD 10.x. Consistent with the current code, in order for IPv6 to be configured on an interface (other than lo0) an ifconfig_<interface>_ipv6 option will have to be added to /etc/rc.conf[.local]. 1. Clean up and minor optimizations for the following functions: ifconfig_up (the ipv6 elements) ipv6if ipv6_autoconfif get_if_var _ifconfig_getargs The cleanups generally were to move the "easy" tests earlier in the functions, and consolidate duplicate code. 2. Stop overloading ipv6_prefer with the ability to disable IPv6 configuration. 3. Remove noafif() which was only ever called from ipv6_autoconfif. Instead, simplify and integrate the tests into that function, and convert the test to use is_wired_interface() instead of listing wireless interfaces explicitly. 4. Integrate backwards compatibility for ipv6_ifconfig_<interface> into _ifconfig_getargs. This dramatically simplifies the code in all of the callers, and avoids a lot of other code duplication. 5. In rc.d/netoptions, add code for an ipv6_privacy option to use RFC 4193 style pseudo-random addresses (this is what windows does by default, FYI). 6. Add support for the [NO]RTADV options in ifconfig_getargs() and ipv6_autoconfif(). In the latter, include support for the explicit addition of [-]accept_rtadv in ifconfig_<interface>_ipv6 as is done in the current code. 7. In rc.d/netif add a warning if $ipv6_enable is set, and remove the set_rcvar_obsolete for it. Also remove the latter from rc.d/ip6addrctl. 8. In /etc/defaults/rc.conf: Add an example for RTADV configuration. Set ipv6_network_interfaces to AUTO. Switch ipv6_prefer to YES. If ipv6_enable is not set this will have no effect. Add a default for ipv6_privacy (NO). 9. Document all of this in rc.conf.5.
2010-04-09 01:35:09 +00:00
;;
esac
fi
if [ -n "${_ipv6_opts}" ]; then
ifconfig $1 inet6 ${_ipv6_opts}
fi
# ifconfig_IF_ipv6
ifconfig_args=`ifconfig_getargs $1 ipv6`
if [ -n "${ifconfig_args}" ]; then
ifconfig $1 inet6 -ifdisabled
ifconfig $1 ${ifconfig_args}
_cfg=0
fi
# backward compatiblity: $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 $1 inet6 -ifdisabled
ifconfig $1 inet6 ${ifconfig_args}
_cfg=0
fi
fi
if [ ${_cfg} -eq 0 ]; then
ifconfig $1 up
fi
if wpaif $1; then
/etc/rc.d/wpa_supplicant start $1
_cfg=0 # XXX: not sure this should count
fi
if dhcpif $1; then
if [ $_cfg -ne 0 ] ; then
ifconfig $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
fi
if dhcpif $1; then
/etc/rc.d/dhclient stop $1
_cfg=0
fi
if ifexists $1; then
ifconfig $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=". - / +"
for _punct_c in $_punct; do
_if=`ltr ${_if} ${_punct_c} '_'`
done
_var=$2
_default=$3
prefix=${_var%%IF*}
suffix=${_var##*IF}
eval echo \${${prefix}${_if}${suffix}-${_default}}
}
# _ifconfig_getargs if [af]
# Echos 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
_tmpargs=`_ifconfig_getargs $1 $2`
if [ $? -eq 1 ]; then
return 1
fi
_args=
for _arg in $_tmpargs; do
case $_arg in
[Dd][Hh][Cc][Pp]) ;;
[Nn][Oo][Aa][Uu][Tt][Oo]) ;;
[Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
[Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
[Ww][Pp][Aa]) ;;
*)
_args="$_args $_arg"
;;
esac
done
echo $_args
}
# autoif
# Returns 0 if the interface should be automaticly 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`
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`
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
}
# afexists af
# Returns 0 if the address family is enabled in the kernel
# 1 otherwise.
afexists()
{
local _af
_af=$1
case ${_af} in
inet)
${SYSCTL_N} net.inet > /dev/null 2>&1
;;
inet6)
${SYSCTL_N} net.inet6 > /dev/null 2>&1
;;
ipx)
${SYSCTL_N} net.ipx > /dev/null 2>&1
;;
atm)
if [ -x /sbin/atmconfig ]; then
/sbin/atmconfig diag list > /dev/null 2>&1
else
return 1
fi
;;
*)
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]*|\
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
# 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
lo0|\
stf[0-9]*|\
faith[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
Fix several logic bugs in the previous IPv6 variable change and re-add $ipv6_enable support for backward compatibility. From UPDATING: 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF for IPv4. For aliases, $ifconfig_IF_aliasN should be used. Note that both variables need the "inet6" keyword at the head. Do not set $ipv6_network_interfaces manually if you do not understand what you are doing. It is not needed in most cases. $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but they are obsolete. 2. $ipv6_enable is obsolete. Use $ipv6_prefer and/or "inet6 accept_rtadv" keyword in ifconfig(8) instead. If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and all configured interfaces have "inet6 accept_rtadv" in the $ifconfig_IF_ipv6. These are for backward compatibility. 3. A new variable $ipv6_prefer has been added. If NO, IPv6 functionality of interfaces with no corresponding $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, and the default address selection policy of ip6addrctl(8) is the IPv4-preferred one (see rc.d/ip6addrctl for more details). Note that if you want to configure IPv6 functionality on the disabled interfaces after boot, first you need to clear the flag by using ifconfig(8) like: ifconfig em0 inet6 -ifdisabled If YES, the default address selection policy is set as IPv6-preferred. The default value of $ipv6_prefer is NO. 4. If your system need to receive Router Advertisement messages, define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) scripts automatically invoke rtsol(8) when the interface becomes UP. The Router Advertisement messages are used for SLAAC (State-Less Address AutoConfiguration).
2009-09-26 18:59:00 +00:00
_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)
Fix several logic bugs in the previous IPv6 variable change and re-add $ipv6_enable support for backward compatibility. From UPDATING: 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF for IPv4. For aliases, $ifconfig_IF_aliasN should be used. Note that both variables need the "inet6" keyword at the head. Do not set $ipv6_network_interfaces manually if you do not understand what you are doing. It is not needed in most cases. $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but they are obsolete. 2. $ipv6_enable is obsolete. Use $ipv6_prefer and/or "inet6 accept_rtadv" keyword in ifconfig(8) instead. If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and all configured interfaces have "inet6 accept_rtadv" in the $ifconfig_IF_ipv6. These are for backward compatibility. 3. A new variable $ipv6_prefer has been added. If NO, IPv6 functionality of interfaces with no corresponding $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, and the default address selection policy of ip6addrctl(8) is the IPv4-preferred one (see rc.d/ip6addrctl for more details). Note that if you want to configure IPv6 functionality on the disabled interfaces after boot, first you need to clear the flag by using ifconfig(8) like: ifconfig em0 inet6 -ifdisabled If YES, the default address selection policy is set as IPv6-preferred. The default value of $ipv6_prefer is NO. 4. If your system need to receive Router Advertisement messages, define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) scripts automatically invoke rtsol(8) when the interface becomes UP. The Router Advertisement messages are used for SLAAC (State-Less Address AutoConfiguration).
2009-09-26 18:59:00 +00:00
return 0
;;
Fix several logic bugs in the previous IPv6 variable change and re-add $ipv6_enable support for backward compatibility. From UPDATING: 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF for IPv4. For aliases, $ifconfig_IF_aliasN should be used. Note that both variables need the "inet6" keyword at the head. Do not set $ipv6_network_interfaces manually if you do not understand what you are doing. It is not needed in most cases. $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but they are obsolete. 2. $ipv6_enable is obsolete. Use $ipv6_prefer and/or "inet6 accept_rtadv" keyword in ifconfig(8) instead. If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and all configured interfaces have "inet6 accept_rtadv" in the $ifconfig_IF_ipv6. These are for backward compatibility. 3. A new variable $ipv6_prefer has been added. If NO, IPv6 functionality of interfaces with no corresponding $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, and the default address selection policy of ip6addrctl(8) is the IPv4-preferred one (see rc.d/ip6addrctl for more details). Note that if you want to configure IPv6 functionality on the disabled interfaces after boot, first you need to clear the flag by using ifconfig(8) like: ifconfig em0 inet6 -ifdisabled If YES, the default address selection policy is set as IPv6-preferred. The default value of $ipv6_prefer is NO. 4. If your system need to receive Router Advertisement messages, define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) scripts automatically invoke rtsol(8) when the interface becomes UP. The Router Advertisement messages are used for SLAAC (State-Less Address AutoConfiguration).
2009-09-26 18:59:00 +00:00
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 -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
ifalias_up ${_if} inet && _ret=0
ipv4_addrs_common ${_if} 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_up ${_if} inet6 && _ret=0
ipv6_prefix_hostid_addr_up ${_if} && _ret=0
ipv6_accept_rtadv_up ${_if} && _ret=0
# wait for DAD
sleep `${SYSCTL_N} net.inet6.ip6.dad_count`
sleep 1
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
inetList="`ifconfig ${_if} | grep 'inet ' | tr "\n" "$_ifs"`"
oldifs="$IFS"
IFS="$_ifs"
for _inet in $inetList ; do
# get rid of extraneous line
[ -z "$_inet" ] && break
_inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'`
IFS="$oldifs"
ifconfig ${_if} ${_inet} delete
IFS="$_ifs"
_ret=0
done
IFS="$oldifs"
ifalias_down ${_if} inet && _ret=0
ipv4_addrs_common ${_if} -alias && _ret=0
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
ifalias_down ${_if} inet6 && _ret=0
inetList="`ifconfig ${_if} | grep 'inet6 ' | tr "\n" "$_ifs"`"
oldifs="$IFS"
IFS="$_ifs"
for _inet6 in $inetList ; do
# get rid of extraneous line
[ -z "$_inet6" ] && break
_inet6=`expr "$_inet6" : '.*\(inet6 \([0-9a-f:]*\)\).*'`
IFS="$oldifs"
ifconfig ${_if} ${_inet6} -alias
IFS="$_ifs"
_ret=0
done
IFS="$oldifs"
return $_ret
}
# ipv4_addrs_common if action
# Evaluate the ifconfig_if_ipv4 arguments for interface $if and
# use $action to add or remove IPv4 addresses from $if.
ipv4_addrs_common()
{
local _ret _if _action _cidr _cidr_addr
local _ipaddr _netmask _range _ipnet _iplow _iphigh _ipcount
_ret=1
_if=$1
_action=$2
# get ipv4-addresses
cidr_addr=`get_if_var $_if ipv4_addrs_IF`
for _cidr in ${cidr_addr}; do
_ipaddr=${_cidr%%/*}
_netmask="/"${_cidr##*/}
_range=${_ipaddr##*.}
_ipnet=${_ipaddr%.*}
_iplow=${_range%-*}
_iphigh=${_range#*-}
# clear netmask when removing aliases
if [ "${_action}" = "-alias" ]; then
_netmask=""
fi
_ipcount=${_iplow}
while [ "${_ipcount}" -le "${_iphigh}" ]; do
eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}"
_ipcount=$((${_ipcount}+1))
_ret=0
# only the first ipaddr in a subnet need the real netmask
if [ "${_action}" != "-alias" ]; then
_netmask="/32"
fi
done
done
return $_ret
}
# ifalias_up if af
# Configure aliases for network interface $if.
# It returns 0 if at least one alias was configured or
# 1 if there were none.
#
ifalias_up()
{
local _ret
_ret=1
case "$2" in
inet)
_ret=`ifalias_ipv4_up "$1"`
;;
inet6)
_ret=`ifalias_ipv6_up "$1"`
;;
esac
return $_ret
}
# ifalias_ipv4_up if
# Helper function for ifalias_up(). Handles IPv4.
#
ifalias_ipv4_up()
{
local _ret alias ifconfig_args
_ret=1
# ifconfig_IF_aliasN which starts with "inet"
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
inet\ *)
ifconfig $1 ${ifconfig_args} alias && _ret=0
;;
"")
break
;;
esac
alias=$((${alias} + 1))
done
return $_ret
}
# ifalias_ipv6_up if
# Helper function for ifalias_up(). Handles IPv6.
#
ifalias_ipv6_up()
{
local _ret alias ifconfig_args
_ret=1
# ifconfig_IF_aliasN which starts with "inet6"
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
inet6\ *)
ifconfig $1 ${ifconfig_args} alias && _ret=0
;;
"")
break
;;
esac
alias=$((${alias} + 1))
done
# backward compatibility: ipv6_ifconfig_IF_aliasN.
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
"")
break
;;
*)
ifconfig $1 inet6 ${ifconfig_args} alias && _ret=0
Fix several logic bugs in the previous IPv6 variable change and re-add $ipv6_enable support for backward compatibility. From UPDATING: 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF for IPv4. For aliases, $ifconfig_IF_aliasN should be used. Note that both variables need the "inet6" keyword at the head. Do not set $ipv6_network_interfaces manually if you do not understand what you are doing. It is not needed in most cases. $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but they are obsolete. 2. $ipv6_enable is obsolete. Use $ipv6_prefer and/or "inet6 accept_rtadv" keyword in ifconfig(8) instead. If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and all configured interfaces have "inet6 accept_rtadv" in the $ifconfig_IF_ipv6. These are for backward compatibility. 3. A new variable $ipv6_prefer has been added. If NO, IPv6 functionality of interfaces with no corresponding $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, and the default address selection policy of ip6addrctl(8) is the IPv4-preferred one (see rc.d/ip6addrctl for more details). Note that if you want to configure IPv6 functionality on the disabled interfaces after boot, first you need to clear the flag by using ifconfig(8) like: ifconfig em0 inet6 -ifdisabled If YES, the default address selection policy is set as IPv6-preferred. The default value of $ipv6_prefer is NO. 4. If your system need to receive Router Advertisement messages, define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) scripts automatically invoke rtsol(8) when the interface becomes UP. The Router Advertisement messages are used for SLAAC (State-Less Address AutoConfiguration).
2009-09-26 18:59:00 +00:00
warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \
" Use ifconfig_$1_aliasN instead."
;;
esac
alias=$((${alias} + 1))
done
return $_ret
}
# ifalias_down if af
# Remove aliases for network interface $if.
# It returns 0 if at least one alias was removed or
# 1 if there were none.
#
ifalias_down()
{
local _ret
_ret=1
case "$2" in
inet)
_ret=`ifalias_ipv4_down "$1"`
;;
inet6)
_ret=`ifalias_ipv6_down "$1"`
;;
esac
return $_ret
}
# ifalias_ipv4_down if
# Helper function for ifalias_down(). Handles IPv4.
#
ifalias_ipv4_down()
{
local _ret alias ifconfig_args
_ret=1
# ifconfig_IF_aliasN which starts with "inet"
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
inet\ *)
ifconfig $1 ${ifconfig_args} -alias && _ret=0
;;
"")
break
;;
esac
alias=$((${alias} + 1))
done
return $_ret
}
# ifalias_ipv6_down if
# Helper function for ifalias_down(). Handles IPv6.
#
ifalias_ipv6_down()
{
local _ret alias ifconfig_args
_ret=1
# ifconfig_IF_aliasN which starts with "inet6"
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
inet6\ *)
ifconfig $1 ${ifconfig_args} -alias && _ret=0
;;
"")
break
;;
esac
alias=$((${alias} + 1))
done
# backward compatibility: ipv6_ifconfig_IF_aliasN.
Fix several logic bugs in the previous IPv6 variable change and re-add $ipv6_enable support for backward compatibility. From UPDATING: 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF for IPv4. For aliases, $ifconfig_IF_aliasN should be used. Note that both variables need the "inet6" keyword at the head. Do not set $ipv6_network_interfaces manually if you do not understand what you are doing. It is not needed in most cases. $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but they are obsolete. 2. $ipv6_enable is obsolete. Use $ipv6_prefer and/or "inet6 accept_rtadv" keyword in ifconfig(8) instead. If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and all configured interfaces have "inet6 accept_rtadv" in the $ifconfig_IF_ipv6. These are for backward compatibility. 3. A new variable $ipv6_prefer has been added. If NO, IPv6 functionality of interfaces with no corresponding $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, and the default address selection policy of ip6addrctl(8) is the IPv4-preferred one (see rc.d/ip6addrctl for more details). Note that if you want to configure IPv6 functionality on the disabled interfaces after boot, first you need to clear the flag by using ifconfig(8) like: ifconfig em0 inet6 -ifdisabled If YES, the default address selection policy is set as IPv6-preferred. The default value of $ipv6_prefer is NO. 4. If your system need to receive Router Advertisement messages, define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) scripts automatically invoke rtsol(8) when the interface becomes UP. The Router Advertisement messages are used for SLAAC (State-Less Address AutoConfiguration).
2009-09-26 18:59:00 +00:00
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
"")
break
;;
*)
Fix several logic bugs in the previous IPv6 variable change and re-add $ipv6_enable support for backward compatibility. From UPDATING: 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF for IPv4. For aliases, $ifconfig_IF_aliasN should be used. Note that both variables need the "inet6" keyword at the head. Do not set $ipv6_network_interfaces manually if you do not understand what you are doing. It is not needed in most cases. $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but they are obsolete. 2. $ipv6_enable is obsolete. Use $ipv6_prefer and/or "inet6 accept_rtadv" keyword in ifconfig(8) instead. If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and all configured interfaces have "inet6 accept_rtadv" in the $ifconfig_IF_ipv6. These are for backward compatibility. 3. A new variable $ipv6_prefer has been added. If NO, IPv6 functionality of interfaces with no corresponding $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, and the default address selection policy of ip6addrctl(8) is the IPv4-preferred one (see rc.d/ip6addrctl for more details). Note that if you want to configure IPv6 functionality on the disabled interfaces after boot, first you need to clear the flag by using ifconfig(8) like: ifconfig em0 inet6 -ifdisabled If YES, the default address selection policy is set as IPv6-preferred. The default value of $ipv6_prefer is NO. 4. If your system need to receive Router Advertisement messages, define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) scripts automatically invoke rtsol(8) when the interface becomes UP. The Router Advertisement messages are used for SLAAC (State-Less Address AutoConfiguration).
2009-09-26 18:59:00 +00:00
ifconfig $1 inet6 ${ifconfig_args} -alias && _ret=0
warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \
" Use ifconfig_$1_aliasN instead."
;;
esac
Fix several logic bugs in the previous IPv6 variable change and re-add $ipv6_enable support for backward compatibility. From UPDATING: 1. To use IPv6, simply define $ifconfig_IF_ipv6 like $ifconfig_IF for IPv4. For aliases, $ifconfig_IF_aliasN should be used. Note that both variables need the "inet6" keyword at the head. Do not set $ipv6_network_interfaces manually if you do not understand what you are doing. It is not needed in most cases. $ipv6_ifconfig_IF and $ipv6_ifconfig_IF_aliasN still work, but they are obsolete. 2. $ipv6_enable is obsolete. Use $ipv6_prefer and/or "inet6 accept_rtadv" keyword in ifconfig(8) instead. If you define $ipv6_enable=YES, it means $ipv6_prefer=YES and all configured interfaces have "inet6 accept_rtadv" in the $ifconfig_IF_ipv6. These are for backward compatibility. 3. A new variable $ipv6_prefer has been added. If NO, IPv6 functionality of interfaces with no corresponding $ifconfig_IF_ipv6 is disabled by using "inet6 ifdisabled" flag, and the default address selection policy of ip6addrctl(8) is the IPv4-preferred one (see rc.d/ip6addrctl for more details). Note that if you want to configure IPv6 functionality on the disabled interfaces after boot, first you need to clear the flag by using ifconfig(8) like: ifconfig em0 inet6 -ifdisabled If YES, the default address selection policy is set as IPv6-preferred. The default value of $ipv6_prefer is NO. 4. If your system need to receive Router Advertisement messages, define "inet6 accept_rtadv" in $ifconfig_IF_ipv6. The rc(8) scripts automatically invoke rtsol(8) when the interface becomes UP. The Router Advertisement messages are used for SLAAC (State-Less Address AutoConfiguration).
2009-09-26 18:59:00 +00:00
alias=$((${alias} + 1))
done
return $_ret
}
# ipv6_prefix_hostid_addr_up if
# add IPv6 prefix + hostid addr to the interface $if
ipv6_prefix_hostid_addr_up()
{
local _if prefix laddr hostid j address
_if=$1
prefix=`get_if_var ${_if} ipv6_prefix_IF`
if [ -n "${prefix}" ]; then
laddr=`network6_getladdr ${_if}`
hostid=${laddr#fe80::}
hostid=${hostid%\%*}
for j in ${prefix}; do
address=$j\:${hostid}
ifconfig ${_if} inet6 ${address} prefixlen 64 alias
# if I am a router, add subnet router
# anycast address (RFC 2373).
if checkyesno ipv6_gateway_enable; then
ifconfig ${_if} inet6 $j:: prefixlen 64 \
alias 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 $1 inet6 accept_rtadv up
if ! checkyesno rtsold_enable; then
rtsol ${rtsol_flags} $1
fi
fi
}
# ipv6_accept_rtadv_down if
# Disable accepting Router Advertisement
ipv6_accept_rtadv_down()
{
if ipv6_autoconfif $1; then
ifconfig $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
}
# clone_up
# Create cloneable interfaces.
#
clone_up()
{
local _prefix _list ifn
_prefix=
_list=
# create_args_IF
for ifn in ${cloned_interfaces}; do
ifconfig ${ifn} create `get_if_var ${ifn} create_args_IF`
if [ $? -eq 0 ]; then
_list="${_list}${_prefix}${ifn}"
[ -z "$_prefix" ] && _prefix=' '
fi
done
debug "Cloned: ${_list}"
}
# clone_down
# Destroy cloned interfaces. Destroyed interfaces are echoed to
# standard output.
#
clone_down()
{
local _prefix _list ifn
_prefix=
_list=
for ifn in ${cloned_interfaces}; do
ifconfig -n ${ifn} destroy
if [ $? -eq 0 ]; then
_list="${_list}${_prefix}${ifn}"
[ -z "$_prefix" ] && _prefix=' '
fi
done
debug "Destroyed clones: ${_list}"
}
# childif_create
# Create and configure child interfaces. Return 0 if child
# interfaces are created.
2008-04-20 20:37:21 +00:00
#
childif_create()
{
local cfg child child_vlans child_wlans create_args debug_flags ifn i
2008-04-20 20:37:21 +00:00
cfg=1
ifn=$1
# Create wireless interfaces
child_wlans=`get_if_var $ifn wlans_IF`
for child in ${child_wlans}; do
create_args="wlandev $ifn `get_if_var $child create_args_IF`"
debug_flags="`get_if_var $child wlandebug_IF`"
2008-04-20 20:37:21 +00:00
if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then
ifconfig $child create ${create_args} && cfg=0
if [ -n "${debug_flags}" ]; then
wlandebug -i $child ${debug_flags}
fi
2008-04-20 20:37:21 +00:00
else
i=`ifconfig wlan create ${create_args}`
if [ -n "${debug_flags}" ]; then
wlandebug -i $i ${debug_flags}
fi
2008-04-20 20:37:21 +00:00
ifconfig $i name $child && cfg=0
fi
if autoif $child; then
ifn_start $child
fi
2008-04-20 20:37:21 +00:00
done
# 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 $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 $child create ${create_args} && cfg=0
else
i=`ifconfig vlan create ${create_args}`
ifconfig $i name $child && cfg=0
fi
fi
if autoif $child; then
ifn_start $child
fi
done
return ${cfg}
2008-04-20 20:37:21 +00:00
}
# childif_destroy
# Destroy child interfaces.
2008-04-20 20:37:21 +00:00
#
childif_destroy()
{
local cfg child child_vlans child_wlans ifn
cfg=1
2008-04-20 20:37:21 +00:00
child_wlans=`get_if_var $ifn wlans_IF`
for child in ${child_wlans}; do
if ! ifexists $child; then
continue
fi
ifconfig -n $child destroy && cfg=0
done
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 -n $child destroy && cfg=0
2008-04-20 20:37:21 +00:00
done
return ${cfg}
2008-04-20 20:37:21 +00:00
}
# 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
}
# gif_up
# Create gif(4) tunnel interfaces.
gif_up()
{
local i peers
for i in ${gif_interfaces}; do
peers=`get_if_var $i gifconfig_IF`
case ${peers} in
'')
continue
;;
*)
if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then
ifconfig $i create >/dev/null 2>&1
else
gif=`ifconfig gif create`
ifconfig $gif name $i
fi
ifconfig $i tunnel ${peers}
ifconfig $i up
;;
esac
done
}
# ng_fec_create ifn
# Configure Fast EtherChannel for interface $ifn. Returns 0 if
# FEC arguments were found and configured; returns !0 otherwise.
ng_fec_create()
{
local req_iface iface bogus
req_iface="$1"
ngctl shutdown ${req_iface}: > /dev/null 2>&1
bogus=""
while true; do
iface=`ng_create_one fec dummy fec`
if [ -z "${iface}" ]; then
exit 2
fi
if [ "${iface}" = "${req_iface}" ]; then
break
fi
bogus="${bogus} ${iface}"
done
for iface in ${bogus}; do
ngctl shutdown ${iface}:
done
}
# fec_up
# Create Fast EtherChannel interfaces.
fec_up()
{
local i j
for i in ${fec_interfaces}; do
ng_fec_create $i
for j in `get_if_var $i fecconfig_IF`; do
case ${j} in
'')
continue
;;
*)
ngctl msg ${i}: add_iface "\"${j}\""
;;
esac
done
done
}
# ipx_up ifn
# Configure any IPX addresses for interface $ifn. Returns 0 if
# IPX arguments were found and configured; returns 1 otherwise.
#
ipx_up()
{
local ifn
ifn="$1"
# ifconfig_IF_ipx
ifconfig_args=`_ifconfig_getargs $ifn ipx`
if [ -n "${ifconfig_args}" ]; then
ifconfig ${ifn} ${ifconfig_args}
return 0
fi
return 1
}
# ipx_down ifn
# Remove IPX addresses for interface $ifn. Returns 0 if IPX
# addresses were found and unconfigured. It returns 1, otherwise.
#
ipx_down()
{
local _if _ifs _ret ipxList oldifs _ipx
_if=$1
_ifs="^"
_ret=1
ipxList="`ifconfig ${_if} | grep 'ipx ' | tr "\n" "$_ifs"`"
oldifs="$IFS"
IFS="$_ifs"
for _ipx in $ipxList ; do
# get rid of extraneous line
[ -z "$_ipx" ] && break
_ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'`
IFS="$oldifs"
ifconfig ${_if} ${_ipx} delete
IFS="$_ifs"
_ret=0
done
IFS="$oldifs"
return $_ret
}
# ifnet_rename
# Rename all requested interfaces.
#
ifnet_rename()
{
local _if _ifname
# ifconfig_IF_name
for _if in `ifconfig -l`; do
_ifname=`get_if_var $_if ifconfig_IF_name`
if [ ! -z "$_ifname" ]; then
ifconfig $_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 -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}${_tmplist# }"
;;
*)
_tmplist="${network_interfaces} ${cloned_interfaces}"
# lo0 is effectively mandatory, so help prevent foot-shooting
#
case "$_tmplist" in
lo0|'lo0 '*|*' lo0'|*' lo0 '*) ;; # This is fine, do nothing
*) _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 $_list
2004-06-06 11:46:29 +00:00
return 0
}
# get_default_if -address_family
# Get the interface of the default route for the given address family.
# The -address_family argument must be suitable passing to route(8).
#
get_default_if()
{
local routeget oldifs defif line
defif=
oldifs="$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 $1 2>/dev/null` in
*media:?Ethernet*) media=Ethernet ;;
esac
test "$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 proto addr rest
ifconfig $1 2>/dev/null | while read proto addr rest; do
case ${proto} in
inet6)
case ${addr} in
fe80::*)
if [ -z "$2" ]; then
echo ${addr}
return
fi
case ${rest} in
*tentative*)
continue
;;
*)
echo ${addr}
return
esac
esac
esac
done
}