#!/bin/sh
#-
# Copyright (c) 2017 Rubicon Communications, LLC
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
recovery_mount=/tmp/mnt_recovery
recovery_dir=/tmp/recovered_config
mkdir -p ${recovery_mount}
mkdir -p ${recovery_dir}

CONFIG_XML_PATH=""

look_for_config_xml_config_msdos() {
	mkdir -p ${recovery_mount}
	echo -n "Looking for config.xml on "
	for try_device in `/sbin/gpart show -p | /usr/bin/egrep '(fat32|\!11|\!12|\!14)' | /usr/bin/awk '{print $3;}'`; do
		if [ ! -e /dev/${try_device} ]; then
			continue
		fi
		echo -n "${try_device}: "
		if /sbin/mount -t msdosfs /dev/${try_device} ${recovery_mount} 2>/dev/null ; then
			echo -n "[found msdos] "
			# look for config.xml
			if [ -r ${recovery_mount}/conf/config.xml  ]; then
				echo -n "[config.xml on ${try_device}] "
				CONFIG_XML_PATH="${recovery_mount}/conf/config.xml"
				return 0
			elif [ -r ${recovery_mount}/config.xml  ]; then
				echo -n "[config.xml on ${try_device}] "
				CONFIG_XML_PATH="${recovery_mount}/config.xml"
				return 0
			else
				echo -n "[no config.xml on ${try_device}, unmounting] "
				/sbin/umount ${recovery_mount}
			fi
		fi
	done
	return 1
}

# Try to locate an existing config.xml file
if look_for_config_xml_config_msdos; then
	/bin/cp -r ${CONFIG_XML_PATH} ${recovery_dir}
	# Remove rrddata if it is present
	sed -i '' -e '/<rrddata>/,/<\/rrddata>/ d' ${recovery_dir}/config.xml
	/sbin/umount ${recovery_mount} 2>&1
	echo -n "[Copied config.xml file to recovery area] "
else
	echo -n "[Could not locate an existing config.xml file!] "
fi
echo "Done."