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|
#!/bin/sh
[ -z "$2" ] && echo "Error: should be run by odhcpc6c" && exit 1
update_resolv() {
local device="$1"
local dns="$2"
(
flock 9
grep -v "#odhcp6c:$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
chmod 0644 /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" ""
}
(
flock 9
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
) 9>/tmp/odhcp6c.lock.$1
rm -f /tmp/odhcp6c.lock.$1
|
