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Diffstat (limited to 'net.Linux/ifconfig.sh')
| -rw-r--r-- | net.Linux/ifconfig.sh | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/net.Linux/ifconfig.sh b/net.Linux/ifconfig.sh new file mode 100644 index 0000000..637c42f --- /dev/null +++ b/net.Linux/ifconfig.sh @@ -0,0 +1,239 @@ +# Copyright 2004-2007 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 + +ifconfig_depend() { + program /sbin/ifconfig + provide interface +} + +_get_mac_address() { + local mac=$(LC_ALL=C ifconfig "${IFACE}" | \ + sed -n -e 's/.* HWaddr \(..:..:..:..:..:..\).*/\1/p') + + + case "${mac}" in + 00:00:00:00:00:00) ;; + 44:44:44:44:44:44) ;; + FF:FF:FF:FF:FF:FF) ;; + "") ;; + *) echo "${mac}"; return 0 ;; + esac + + return 1 +} + +_up() { + ifconfig "${IFACE}" up +} + +_down() { + ifconfig "${IFACE}" down +} + +_exists() { + grep -Eq "^[[:space:]]*${IFACE}:[[:space:]]*" /proc/net/dev +} + +_ifindex() { + local line= i=-2 + while read line ; do + i=$((${i} + 1)) + [ ${i} -lt 1 ] && continue + case "${line}" in + "${IFACE}: "*) echo "${i}"; return 0;; + esac + done < /proc/net/dev + return 1 +} + +_is_wireless() { + # Support new sysfs layout + [ -d /sys/class/net/"${IFACE}"/wireless ] && return 0 + + [ ! -e /proc/net/wireless ] && return 1 + grep -Eq "^[[:space:]]*${IFACE}:[[:space:]]+" /proc/net/wireless +} + +_get_inet_address() { + set -- $(LC_ALL=C ifconfig "${IFACE}" | + sed -n -e 's/.*inet addr:\([^ ]*\).*Mask:\([^ ]*\).*/\1 \2/p') + echo -n "$1" + shift + echo "/$(_netmask2cidr "$1")" +} + +_get_inet_addresses() { + local iface=${IFACE} i=0 + local addrs="$(_get_inet_address)" + + while true ; do + local IFACE="${iface}:${i}" + _exists || break + local addr="$(_get_inet_address)" + [ -n "${addr}" ] && addrs="${addrs}${addrs:+ }${addr}" + i=$((${i} + 1)) + done + echo "${addrs}" +} + +_cidr2netmask() { + local cidr="$1" netmask="" done=0 i=0 sum=0 cur=128 + local octets= frac= + + local octets=$((${cidr} / 8)) + local frac=$((${cidr} % 8)) + while [ ${octets} -gt 0 ] ; do + netmask="${netmask}.255" + octets=$((${octets} - 1)) + done=$((${done} + 1)) + done + + if [ ${done} -lt 4 ] ; then + while [ ${i} -lt ${frac} ] ; do + sum=$((${sum} + ${cur})) + cur=$((${cur} / 2)) + i=$((i + 1)) + done + netmask="${netmask}.${sum}" + done=$((${done} + 1)) + + while [ ${done} -lt 4 ] ; do + netmask="${netmask}.0" + done=$((${done} + 1)) + done + fi + + echo "${netmask#.*}" +} + +_add_address() { + if [ "$1" = "127.0.0.1/8" -a "${IFACE}" = "lo" ] ; then + ifconfig "${IFACE}" "$@" 2>/dev/null + return 0 + fi + + case "$1" in + *:*) ifconfig "${IFACE}" inet6 add "$@"; return $?;; + esac + + # IPv4 is tricky - ifconfig requires an aliased device + # for multiple addresses + local iface="${IFACE}" + if LC_ALL=C ifconfig "${iface}" | grep -Eq "\<inet addr:.*" ; then + # Get the last alias made for the interface and add 1 to it + i=$(ifconfig | sed '1!G;h;$!d' | grep -m 1 -o "^${iface}:[0-9]*" \ + | sed -n -e 's/'"${iface}"'://p') + i=$((${i:-0} + 1)) + iface="${iface}:${i}" + fi + + # ifconfig doesn't like CIDR addresses + local ip="${1%%/*}" cidr="${1##*/}" netmask= + if [ -n "${cidr}" -a "${cidr}" != "${ip}" ]; then + netmask="$(_cidr2netmask "${cidr}")" + shift + set -- "${ip}" netmask "${netmask}" "$@" + fi + +# # Support iproute2 style config where possible +# r="${config[@]}" +# config=( ${r//brd +/} ) +# config=( "${config[@]//brd/broadcast}" ) +# config=( "${config[@]//peer/pointopoint}" ) +# fi + + ifconfig "${iface}" "$@" +} + +_add_route() { + if [ $# -eq 3 ] ; then + set -- "$1" "$2" gw "$3" + elif [ "$3" = "via" ] ; then + local one=$1 two=$2 + shift ; shift; shift + set -- "${one}" "${two}" gw "$@" + fi + + if [ -n "${metric}" ] ; then + set -- "$@" metric ${metric} + fi + + route add "$@" +} + +_delete_addresses() { + # We don't remove addresses from aliases + case "${IFACE}" in + *:*) return 0 ;; + esac + + einfo "Removing addresses" + eindent + # iproute2 can add many addresses to an iface unlike ifconfig ... + # iproute2 added addresses cause problems for ifconfig + # as we delete an address, a new one appears, so we have to + # keep polling + while true ; do + local addr=$(LC_ALL=C ifconfig "${IFACE}" | + sed -n -e 's/.*inet addr:\([^ ]*\).*/\1/p') + + [ -z "${addr}" ] && break + + if [ "${addr}" = "127.0.0.1/8" ] ; then + # Don't delete the loopback address + [ "${IFACE}" = "lo" -o "${IFACE}" = "lo0" ] && break + fi + ifconfig "${IFACE}" 0.0.0.0 || break + done + + # Remove IPv6 addresses + local addr= + for addr in $(LC_ALL=C ifconfig "${IFACE}" | \ + sed -n -e 's/^.*inet6 addr: \([^ ]*\) Scope:[^L].*/\1/p') ; do + [ "${addr}" = "::1/128" -a "${IFACE}" = "lo" ] && continue + einfo "${addr}" + ifconfig "${IFACE}" inet6 del "${addr}" + done + + return 0 +} + +_has_carrier() { + return 0 +} + +_tunnel() { + iptunnel "$@" +} + +ifconfig_pre_start() { + # MTU support + local mtu= + eval mtu=\$mtu_${IFVAR} + [ -n "${mtu}" ] && ifconfig "${IFACE}" mtu "${mtu}" + + local tunnel= + + eval tunnel=\$iptunnel_${IFVAR} + [ -z "${tunnel}" ] && return 0 + + # Set our base metric to 1000 + metric=1000 + + ebegin "Creating tunnel ${IFVAR}" + iptunnel add "${tunnel}" + eend $? +} + +ifconfig_post_stop() { + # Don't delete sit0 as it's a special tunnel + [ "${IFACE}" = "sit0" ] && return 0 + + [ -z "$(iptunnel show "${IFACE}" 2>/dev/null)" ] && return 0 + + ebegin "Destroying tunnel ${IFACE}" + iptunnel del "${IFACE}" + eend $? +} + +# vim: set ts=4 : |