#!@PREFIX@/sbin/runscript # Copyright 2009 Roy Marples # All rights reserved. Released under the 2-clause BSD license. # This script was inspired by the equivalent rc.d network from NetBSD. description="Configures network interfaces." __nl=" " depend() { need localmount after bootmisc provide net # We don't want to stop network unless we really have to keyword nostop keyword nojail noprefix novserver } uniqify() { local result= i= for i; do case " $result " in *" $i "*);; *) result="$result $i";; esac done echo "${result# *}" } reverse() { local result= i= for i; do result="$i $result" done echo "${result# *}" } sys_interfaces() { case "$RC_UNAME" in Linux) local w= rest= i= cmd=$1 while read w rest; do i=${w%%:*} [ "$i" != "$w" ] || continue if [ "$cmd" = u ]; then ifconfig "$i" | grep -q "[ ]*UP" || continue fi printf "%s " "$i" done /dev/null); do for f in /etc/ifconfig.${c}[0-9]*; do [ -f "$f" ] && printf "%s" "$f{##*.} " done done ;; *) for f in /etc/ifconfig.*; do [ -f "$f" ] && printf "%s" "${f##*.} " done for f in /etc/ip.*; do [ -f "$f" ] && printf "%s" "${f##*.} " done ;; esac echo } interfaces() { uniqify $(sys_interfaces "$@") $interfaces $(auto_interfaces) } dumpargs() { local f="$1" shift case "$@" in '') [ -f "$f" ] && cat "$f";; *"$__nl"*) echo "$@";; *) ( set -o noglob IFS=';'; set -- $@ IFS="$__nl"; echo "$*" );; esac } runip() { local int="$1" err= shift err=$(LC_ALL=C ip address add "$@" dev "$int" 2>&1) [ -z "$err" ] && return 0 if [ "$err" = "RTNETLINK answers: File exists" ]; then ip address del "$@" dev "$int" 2>/dev/null fi # Localise the error ip address add "$@" dev "$int" } routeflush() { if [ "$RC_UNAME" = Linux ]; then if [ -x /sbin/ip ]; then ip route flush scope global else # Sadly we also delete some link routes, but # this cannot be helped local dest= gate= net= flags= rest= route -n | while read dest gate net flags rest; do [ -z "$net" ] && continue case "$dest" in [0-9]*) ;; *) continue;; esac local xtra= netmask="netmask $net" case "$flags" in U) continue;; *H*) flags=-host; netmask=;; *!*) flags=-net; xtra=reject;; *) flags=-net;; esac route del $flags $dest $netmask $xtra done fi else route -qn flush fi } runargs() { dumpargs "$@" | while read -r args; do case "$args" in ''|"#"*) ;; *) ( eval vebegin "${args#*!}" eval "${args#*!}" veend $? );; esac done } start() { local cr=0 r= int= intv= cmd= args= upcmd= einfo "Starting network" routeflush if [ "$RC_UNAME" = "Linux" ]; then ifconfig lo 127.0.0.1 netmask 255.0.0.0 || cr=1 route add -net 127.0.0.0 netmask 255.0.0.0 \ gw 127.0.0.1 2>/dev/null route add -net 127.0.0.0 netmask 255.0.0.0 \ gw 127.0.0.1 reject 2>/dev/null else ifconfig lo0 127.0.0.1 netmask 255.0.0.0 || cr=1 route -q add -inet 127.0.0.0 -netmask 255.0.0.0 \ 127.0.0.1 -reject || cr=1 fi eindent for int in $(interfaces); do local func= cf= intv=$(shell_var "$int") eval upcmd=\$ifup_$intv for func in ip ifconfig; do eval cmd=\$${func}_$intv if [ -n "$cmd" -o -f /etc/"$func.$int" ]; then cf=/etc/"$func.$int" break fi done [ -n "$cf" -o -n "$upcmd" -o \ -f /etc/ifup."$int" -o -f "$cf" ] || continue veinfo "$int" case "$func" in ip) func=runip;; esac eindent runargs /etc/ifup."$int" "$upcmd" r=0 dumpargs "$cf" "$cmd" | while read -r args; do case "$args" in ''|"#"*) ;; "!"*) ( eval vebegin "${args#*!}" eval "${args#*!}" veend $? );; *) ( set -o noglob eval set -- "$args" vebegin "$@" $func "$int" "$@" veend $? );; esac done eoutdent done eoutdent eend $cr if [ -n "$defaultroute" ]; then ebegin "Setting default route $defaultroute" if [ "$RC_UNAME" = Linux ]; then route add default gw $defaultroute else route add default $defaultroute fi eend $? fi return 0 } stop() { local int= intv= cmd= downcmd= r= einfo "Stopping network" routeflush eindent for int in $(reverse $(interfaces u)); do intv=$(shell_var "$int") eval downcmd=\$ifdown_$intv eval cmd=\$ip_$intv [ -z "$cmd" ] && eval cmd=\$ifconfig_$intv if [ -n "$cmd" -o -f /etc/ip."$int" -o \ -f /etc/ifconfig."$int" -o \ -n "$downcmd" -o -f /etc/ifdown."$int" ]; then veinfo "$int" runargs /etc/ifdown."$int" "$downcmd" ifconfig "$int" down 2>/dev/null ifconfig "$int" destroy 2>/dev/null fi done eoutdent eend 0 }