#!/bin/bash
# Copyright (C) 2011-2013 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
#
# See the License for the specific language governing permissions and
# limitations under the License.

set -e

# The puppet modules should install unbound.
dd of=/tmp/forwarding.conf <<EOF
forward-zone:
  name: "."
  forward-addr: 8.8.8.8
EOF

mv /tmp/forwarding.conf /etc/unbound/
chown root:root /etc/unbound/forwarding.conf
chmod a+r /etc/unbound/forwarding.conf

# HPCloud has selinux enabled by default, Rackspace apparently not.
# Regardless, apply the correct context.
if [ -x /sbin/restorecon ] ; then
    chcon system_u:object_r:named_conf_t:s0 /etc/unbound/forwarding.conf
fi

# Overwrite /etc/resolv.conf at boot
dd of=/etc/rc.local <<EOF

#!/bin/bash
set -o xtrace

# Some providers inject dynamic network config statically. Work around this
# for DNS nameservers. This is expected to fail on some nodes so remove -e.
set +e
sed -i -e 's/^\(DNS[0-9]*=[.0-9]\+\)/#\1/g' /etc/sysconfig/network-scripts/ifcfg-*
set -e

echo 'nameserver 127.0.0.1' > /etc/resolv.conf

exit 0
EOF

echo 'include: /etc/unbound/forwarding.conf' >> /etc/unbound/unbound.conf