#!/bin/sh -e
PATH=/usr/sbin:/usr/bin:/sbin:/bin
if [ ! -x /usr/sbin/unbound ]; then
exit 0
fi
if [ ! -f /etc/unbound/unbound_control.key ]; then
exit 0
fi
if [ ! -x /lib/resolvconf/list-records ]; then
exit 1
fi
RESOLVCONF_FILES="$(/lib/resolvconf/list-records)"
if [ -n "$RESOLVCONF_FILES" ]; then
NS_IPS="$(sed -rne 's/^[[:space:]]*nameserver[[:space:]]+//p' $RESOLVCONF_FILES \
| egrep -v '^(127\.|::1)' | sort -u)"
else
NS_IPS=""
fi
if [ -n "$NS_IPS" ]; then
FWD="$(echo $NS_IPS | tr '\n' ' ')"
unbound-control forward $FWD 1>/dev/null 2>&1 || true
else
unbound-control forward off 1>/dev/null 2>&1 || true
fi