From: Steven Barth Date: Wed, 29 Jan 2014 11:59:32 +0000 (+0100) Subject: Add example status script X-Git-Tag: debian/1.1+git20160131-1~91 X-Git-Url: https://git.decadent.org.uk/gitweb/?a=commitdiff_plain;h=b4a0f3d74b04074eae21e88fbf5b8f2ddc150f86;p=odhcp6c.git Add example status script --- diff --git a/odhcp6c-example-script.sh b/odhcp6c-example-script.sh new file mode 100755 index 0000000..6215257 --- /dev/null +++ b/odhcp6c-example-script.sh @@ -0,0 +1,153 @@ +#!/bin/sh +[ -z "$2" ] && echo "Error: should be run by odhcpc6c" && exit 1 + +update_resolv() { + local device="$1" + local dns="$2" + + ( + flock -n 9 + grep -v "#odhcp6c:$device:" /etc/resolv.conf > /tmp/resolv.conf.tmp + for c in $dns; do + echo "nameserver $c #odhcp6c:$device:" >> /tmp/resolv.conf.tmp + done + mv /tmp/resolv.conf.tmp /etc/resolv.conf + ) 9>/tmp/resolv.conf.lock + rm -f /tmp/resolv.conf.lock /tmp/resolv.conf.tmp +} + +setup_interface () { + local device="$1" + + # Merge RA-DNS + for radns in $RA_DNS; do + local duplicate=0 + for dns in $RDNSS; do + [ "$radns" = "$dns" ] && duplicate=1 + done + [ "$duplicate" = 0 ] && RDNSS="$RDNSS $radns" + done + + local dnspart="" + for dns in $RDNSS; do + if [ -z "$dnspart" ]; then + dnspart="\"$dns\"" + else + dnspart="$dnspart, \"$dns\"" + fi + done + + update_resolv "$device" "$dns" + + local prefixpart="" + for entry in $PREFIXES; do + local addr="${entry%%,*}" + entry="${entry#*,}" + local preferred="${entry%%,*}" + entry="${entry#*,}" + local valid="${entry%%,*}" + entry="${entry#*,}" + [ "$entry" = "$valid" ] && entry= + + local class="" + local excluded="" + + while [ -n "$entry" ]; do + local key="${entry%%=*}" + entry="${entry#*=}" + local val="${entry%%,*}" + entry="${entry#*,}" + [ "$entry" = "$val" ] && entry= + + if [ "$key" = "class" ]; then + class=", \"class\": $val" + elif [ "$key" = "excluded" ]; then + excluded=", \"excluded\": \"$val\"" + fi + done + + local prefix="{\"address\": \"$addr\", \"preferred\": $preferred, \"valid\": $valid $class $excluded}" + + if [ -z "$prefixpart" ]; then + prefixpart="$prefix" + else + prefixpart="$prefixpart, $prefix" + fi + + # TODO: delete this somehow when the prefix disappears + ip -6 route add unreachable "$addr" + done + + ip -6 route flush dev "$device" + ip -6 address flush dev "$device" scope global + + # Merge addresses + for entry in $RA_ADDRESSES; do + local duplicate=0 + local addr="${entry%%/*}" + for dentry in $ADDRESSES; do + local daddr="${dentry%%/*}" + [ "$addr" = "$daddr" ] && duplicate=1 + done + [ "$duplicate" = "0" ] && ADDRESSES="$ADDRESSES $entry" + done + + for entry in $ADDRESSES; do + local addr="${entry%%,*}" + entry="${entry#*,}" + local preferred="${entry%%,*}" + entry="${entry#*,}" + local valid="${entry%%,*}" + + ip -6 address add "$addr" dev "$device" preferred_lft "$preferred" valid_lft "$valid" + done + + for entry in $RA_ROUTES; do + local addr="${entry%%,*}" + entry="${entry#*,}" + local gw="${entry%%,*}" + entry="${entry#*,}" + local valid="${entry%%,*}" + entry="${entry#*,}" + local metric="${entry%%,*}" + + if [ -n "$gw" ]; then + ip -6 route add "$addr" via "$gw" metric "$metric" dev "$device" from "::/128" + else + ip -6 route add "$addr" metric "$metric" dev "$device" + fi + + for prefix in $PREFIXES; do + local paddr="${prefix%%,*}" + [ -n "$gw" ] && ip -6 route add "$addr" via "$gw" metric "$metric" dev "$device" from "$paddr" + done + done +} + +teardown_interface() { + local device="$1" + ip -6 route flush dev "$device" + ip -6 address flush dev "$device" scope global + update_resolv "$device" "" +} + +case "$2" in + bound) + teardown_interface "$1" + setup_interface "$1" + ;; + informed|updated|rebound|ra-updated) + setup_interface "$1" + ;; + stopped|unbound) + teardown_interface "$1" + ;; + started) + teardown_interface "$1" + ;; +esac + +# user rules +[ -f /etc/odhcp6c.user ] && . /etc/odhcp6c.user + +exit 0