# Copyright (c) 2007-2008 Roy Marples # Released under the 2-clause BSD license. ifconfig_depend() { program /sbin/ifconfig provide interface } _up() { ifconfig "${IFACE}" up } _down() { ifconfig "${IFACE}" down } _exists() { grep -Eq "^[[:space:]]*${IFACE}:" /proc/net/dev } _ifindex() { local line= i=-2 while read line; do : $(( i += 1 )) [ ${i} -lt 1 ] && continue case "${line}" in "${IFACE}:"*) echo "${i}"; return 0;; esac done < /proc/net/dev # Return the next available index : $(( i += 1 )) echo "${i}" return 1 } _is_wireless() { # Support new sysfs layout [ -d /sys/class/net/"${IFACE}"/wireless -o \ -d /sys/class/net/"${IFACE}"/phy80211 ] && return 0 [ ! -e /proc/net/wireless ] && return 1 grep -Eq "^[[:space:]]*${IFACE}:" /proc/net/wireless } _set_flag() { ifconfig "${IFACE}" "$1" } _get_mac_address() { local mac=$(LC_ALL=C ifconfig "${IFACE}" | \ sed -n -e 's/.* \(HWaddr\|ether\) \(..:..:..:..:..:..\).*/\2/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 } _set_mac_address() { ifconfig "${IFACE}" hw ether "$1" } _get_inet_address() { set -- $(LC_ALL=C ifconfig "${IFACE}" | sed -n -e 's/.*\(inet addr:\|inet \)\([^ ]*\).*\(Mask:\|netmask \)\([^ ]*\).*/\2 \4/p') [ -z "$1" ] && return 1 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}" : $(( i += 1 )) done echo "${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 -= 1 )) : $(( done += 1 )) done if [ ${done} -lt 4 ]; then while [ ${i} -lt ${frac} ]; do : $(( sum += cur )) : $(( cur /= 2 )) : $(( i += 1 )) done netmask="${netmask}.${sum}" : $(( done += 1 )) while [ ${done} -lt 4 ]; do netmask="${netmask}.0" : $(( done += 1 )) done fi echo "${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 '\/dev/null)" ] && return 0 ebegin "Destroying tunnel ${IFACE}" iptunnel del "${IFACE}" eend $? }