#!/bin/bash
#
# Copyright (C) 2019  Red Hat, Inc.
#
# Download and extract the updates image.
#
# How to apply the updates image?
#   apply-updates http://myserver/updates.img
#
# How to run Anaconda with updates?
#   anaconda
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
# Public License for more details.  You should have received a copy of the
# GNU General Public License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.  Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.

URL="$1"

if [[ -z "${URL}" ]]; then
    echo "Specify the location of the updates image." 1>&2
    exit 1
fi

if [[ "$EUID" -ne 0 ]]; then
    echo "Root privileges are required." 1>&2
    exit 1
fi

# Clear /tmp/updates, so Anaconda can set it up again.
rm -rf /tmp/updates

# Download and extract the updates image.
(cd / ; curl -f "${URL}" | gzip -dc  | cpio -idu )