#!/bin/bash
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author:	Bob Gilligan <gilligan@vyatta.com>
# Description:	Standalone script to reset the root passwd to factory default
#		value.  Note:  This script can ONLY be run as a standalone
#		init program by grub.
#
# **** End License ****

# The Vyatta config file:
CF=/opt/vyatta/etc/config/config.boot

echo "Standalone root password recovery tool."

#
# Check to see if we are running in standalone mode.  We'll
# know that we are if our pid is 1.
#
if [ "$$" != "1" ]; then
    echo "This tool can only be run in standalone mode."
    exit 1
fi

#
# OK, now we know we are running in standalone mode.  Talk to the
# user.
#
echo "Do you wish to reset the reset the root password to its"
echo -n "factory setting value of \"vyatta\"? (Yes/No) [No]: "

#
# Parse the user's response
#
read response
response=${response:0:1}

if [ "$response" != "y" -a "$response" != "Y" ]; then
    echo "OK, the root password will not be reset."
    echo -n "Rebooting in 5 seconds..."
    sleep 5
    echo
    /sbin/reboot -f
fi

echo "Starting process to reset the root password..."

echo "Re-mounting root filesystem read/write..."
mount -o remount,rw /

echo "Mounting the config filesystem..."
mount /opt/vyatta/etc/config/

echo "Saving backup copy of config.boot..."
cp $CF ${CF}.before_pwrecovery

echo "Reseting the root password..."
sed -i -e "/^.* user root {/,/^.* }/s/encrypted-password: .*$/encrypted-password: \"\$1\$\$Ht7gBYnxI1xCdO\/JOnodh.\"/" $CF

echo "Root password has been reset."
echo "Logging the activity..."
echo "`date`: Root password reset to factory value" >> /var/log/messages

echo -n "Machine will reboot in 5 seconds..."
sync
sleep 5
echo
/sbin/reboot -f