329 lines
6.2 KiB
Plaintext
329 lines
6.2 KiB
Plaintext
# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
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# Released under the 2-clause BSD license.
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ifconfig_depend()
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{
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program /sbin/ifconfig /bin/ifconfig
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provide interface
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}
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_up()
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{
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ifconfig "${IFACE}" up
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}
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_down()
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{
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ifconfig "${IFACE}" down
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}
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_exists()
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{
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[ -e /sys/class/net/"$IFACE" ]
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}
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_ifindex()
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{
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local index=-1
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local f v
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if [ -e /sys/class/net/"${IFACE}"/ifindex ]; then
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index=$(cat /sys/class/net/"${IFACE}"/ifindex)
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else
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for f in /sys/class/net/*/ifindex ; do
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v=$(cat $f)
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[ $v -gt $index ] && index=$v
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done
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: $(( index += 1 ))
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fi
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echo "${index}"
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return 0
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}
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_is_wireless()
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{
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# Support new sysfs layout
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[ -d /sys/class/net/"${IFACE}"/wireless -o \
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-d /sys/class/net/"${IFACE}"/phy80211 ] && return 0
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[ ! -e /proc/net/wireless ] && return 1
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grep -Eq "^[[:space:]]*${IFACE}:" /proc/net/wireless
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}
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_set_flag()
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{
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ifconfig "${IFACE}" "$1"
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}
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_get_mac_address()
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{
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local mac=$(LC_ALL=C ifconfig "${IFACE}" | \
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sed -n -e 's/.* \(HWaddr\|ether\) \(..:..:..:..:..:..\).*/\2/p')
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case "${mac}" in
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00:00:00:00:00:00);;
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44:44:44:44:44:44);;
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FF:FF:FF:FF:FF:FF);;
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"");;
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*) echo "${mac}"; return 0;;
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esac
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return 1
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}
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_set_mac_address()
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{
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ifconfig "${IFACE}" hw ether "$1"
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}
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_get_inet_address()
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{
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set -- $(LC_ALL=C ifconfig "${IFACE}" |
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sed -n -e 's/.*\(inet addr:\|inet \)\([^ ]*\).*\(Mask:\|netmask \)\([^ ]*\).*/\2 \4/p')
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[ -z "$1" ] && return 1
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echo -n "$1"
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shift
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echo "/$(_netmask2cidr "$1")"
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}
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_get_inet_addresses()
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{
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local iface=${IFACE} i=0
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local addrs="$(_get_inet_address)"
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while true; do
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local IFACE="${iface}:${i}"
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_exists || break
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local addr="$(_get_inet_address)"
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[ -n "${addr}" ] && addrs="${addrs}${addrs:+ }${addr}"
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: $(( i += 1 ))
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done
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echo "${addrs}"
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}
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_cidr2netmask()
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{
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local cidr="$1" netmask="" done=0 i=0 sum=0 cur=128
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local octets= frac=
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local octets=$(( cidr / 8 ))
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local frac=$(( cidr % 8 ))
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while [ ${octets} -gt 0 ]; do
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netmask="${netmask}.255"
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: $(( octets -= 1 ))
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: $(( done += 1 ))
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done
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if [ ${done} -lt 4 ]; then
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while [ ${i} -lt ${frac} ]; do
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: $(( sum += cur ))
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: $(( cur /= 2 ))
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: $(( i += 1 ))
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done
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netmask="${netmask}.${sum}"
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: $(( done += 1 ))
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while [ ${done} -lt 4 ]; do
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netmask="${netmask}.0"
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: $(( done += 1 ))
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done
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fi
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echo "${netmask#.*}"
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}
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_add_address()
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{
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if [ "$1" = "127.0.0.1/8" -a "${IFACE}" = "lo" ]; then
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ifconfig "${IFACE}" "$@" 2>/dev/null
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return 0
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fi
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case "$1" in
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*:*) ifconfig "${IFACE}" inet6 add "$@"; return $?;;
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esac
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# IPv4 is tricky - ifconfig requires an aliased device
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# for multiple addresses
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local iface="${IFACE}"
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if LC_ALL=C ifconfig "${iface}" | grep -Eq '\<inet (addr:)?.*'; then
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# Get the last alias made for the interface and add 1 to it
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i=$(ifconfig | sed '1!G;h;$!d' | grep -m 1 -o "^${iface}:[0-9]*" \
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| sed -n -e 's/'"${iface}"'://p')
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: $(( i = ${i:-0} + 1 ))
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iface="${iface}:${i}"
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fi
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# ifconfig doesn't like CIDR addresses
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local ip="${1%%/*}" cidr="${1##*/}" netmask=
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if [ -n "${cidr}" -a "${cidr}" != "${ip}" ]; then
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netmask="$(_cidr2netmask "${cidr}")"
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shift
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set -- "${ip}" netmask "${netmask}" "$@"
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fi
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local arg= cmd=
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while [ -n "$1" ]; do
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case "$1" in
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brd)
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if [ "$2" = "+" ]; then
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shift
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else
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cmd="${cmd} broadcast"
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fi
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;;
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peer) cmd="${cmd} pointopoint";;
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*) cmd="${cmd} $1";;
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esac
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shift
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done
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ifconfig "${iface}" ${cmd}
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}
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_add_route()
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{
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local inet6= family=
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if [ "$1" = "-A" -o "$1" = "-f" -o "$1" = "-family" ]; then
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family="-A $2"
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shift; shift
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elif [ "$1" = "-4" ]; then
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family="-A inet"
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shift
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elif [ "$1" = "-6" ]; then
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family="-A inet6"
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shift
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fi
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if [ -n "${metric}" ]; then
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set -- "$@" metric ${metric}
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fi
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if [ $# -eq 3 ]; then
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set -- "$1" "$2" gw "$3"
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elif [ "$3" = "via" ]; then
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local one=$1 two=$2
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shift; shift; shift
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set -- "${one}" "${two}" gw "$@"
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fi
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case "$@" in
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*:*) [ "$1" = "-net" ] && shift;;
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esac
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route ${family} add "$@" dev "${IFACE}"
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}
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_delete_addresses()
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{
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# We don't remove addresses from aliases
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case "${IFACE}" in
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*:*) return 0;;
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esac
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einfo "Removing addresses"
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eindent
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# iproute2 can add many addresses to an iface unlike ifconfig ...
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# iproute2 added addresses cause problems for ifconfig
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# as we delete an address, a new one appears, so we have to
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# keep polling
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while true; do
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local addr=$(_get_inet_address)
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[ -z "${addr}" ] && break
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if [ "${addr}" = "127.0.0.1/8" ]; then
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# Don't delete the loopback address
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[ "${IFACE}" = "lo" -o "${IFACE}" = "lo0" ] && break
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fi
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einfo "${addr}"
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ifconfig "${IFACE}" 0.0.0.0 || break
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done
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# Remove IPv6 addresses
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local addr=
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for addr in $(LC_ALL=C ifconfig "${IFACE}" | \
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sed -n -e 's/^.*\(inet6 addr:\|inet6\) \([^ ]*\) .*\(Scope:[^L]\|scopeid [^<]*<[^l]\).*/\2/p'); do
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if [ "${IFACE}" = "lo" ]; then
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case "${addr}" in
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"::1/128"|"/128") continue;;
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esac
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fi
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einfo "${addr}"
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ifconfig "${IFACE}" inet6 del "${addr}"
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done
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return 0
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}
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_has_carrier()
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{
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return 0
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}
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_tunnel()
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{
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iptunnel "$@"
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}
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ifconfig_pre_start()
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{
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local tunnel=
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eval tunnel=\$iptunnel_${IFVAR}
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if [ -n "${tunnel}" ]; then
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# Set our base metric to 1000
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metric=1000
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ebegin "Creating tunnel ${IFVAR}"
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iptunnel add ${tunnel}
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eend $? || return 1
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_up
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fi
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# MTU support
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local mtu=
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eval mtu=\$mtu_${IFVAR}
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[ -n "${mtu}" ] && ifconfig "${IFACE}" mtu "${mtu}"
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# TX Queue Length support
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local len=
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eval len=\$txqueuelen_${IFVAR}
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[ -n "${len}" ] && ifconfig "${IFACE}" txqueuelen "${len}"
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return 0
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}
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ifconfig_post_stop()
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{
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# Don't delete sit0 as it's a special tunnel
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[ "${IFACE}" = "sit0" ] && return 0
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[ -z "$(iptunnel show "${IFACE}" 2>/dev/null)" ] && return 0
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ebegin "Destroying tunnel ${IFACE}"
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iptunnel del "${IFACE}"
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eend $?
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}
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# Is the interface administratively/operationally up?
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# The 'UP' status in ifconfig/iproute2 is the administrative status
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# Operational state is available in iproute2 output as 'state UP', or the
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# operstate sysfs variable.
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# 0: up
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# 1: down
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# 2: invalid arguments
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is_admin_up()
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{
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local iface="$1"
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[ -z "$iface" ] && iface="$IFACE"
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ifconfig "${iface}" | \
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sed -n '1,1{ /flags=.*[<,]UP[,>]/{ q 0 }}; q 1; '
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}
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is_oper_up()
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{
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local iface="$1"
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[ -z "$iface" ] && iface="$IFACE"
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read state </sys/class/net/"${iface}"/operstate
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[ "x$state" = "up" ]
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}
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