#!/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:	Robert Bays <robert@vyatta.com>
# **** End License ****

shopt -s xpg_echo

test -f /etc/default/vyatta && \
    source /etc/default/vyatta
: ${vyatta_sbindir:=/opt/vyatta/sbin}
: ${vyatta_sysconfdir:=/opt/vyatta/etc}

if [ -n "$1" ]; then
    DRIVE=$1
else   
    DRIVE="/dev/fd0"
fi

failure ()
{
    echo "$*"
    exit 1
}

# Look and see if we have a floppy drive
if sed -n '/[0-9]\+ fd$/ { q 1 }' /proc/devices || [ ! -e $DRIVE ] ; then
    failure "No floppy device"
fi

echo "This will erase all data on floppy $DRIVE."
read -p 'Continue (y/n)? [y] ' -n 1 -t 5 yorn

if [[ "$yorn" == [nN]* ]] ; then
    echo
    exit 0
fi

fd=/media/floppy

unbind_notice="\rUnbinding config from floppy...\c"
unbind__error="\rError: Couldn't unbind ${vyatta_sysconfdir}/config."
umount_notice="\rAttempting to unmount floppy...\c"
umount__error="\rError: Couldn't unmount $DRIVE."
format_notice="\rFormatting floppy $DRIVE...    \c"
format__error="\rPlease insert a floppy disk in $DRIVE and rerun."
create_notice="\rCreating file system...        \c"
create__error="\rError: Couldn't create filesystem on floppy $DRIVE"
mount__notice="\rMounting formatted floppy...   \c"
mount___error="\rError: Couldn't mount floppy $DRIVE to $fd"
config_notice="\rSaving config...               \c"
config__error="\rError: Couldn't save config in $fd/config/config.boot"
bind___notice="\rRedirecting config directory...\c"
bind____error="\rError: redirect to floppy"
saved__notice="\rYour configuration directory was saved to: $fd/config"

mkdir -p $fd

if grep -q "$DRIVE ${vyatta_sysconfdir}/config" /proc/mounts ; then
    echo "$unbind_notice"
    /bin/umount ${vyatta_sysconfdir}/config &>/dev/null || \
	failure $unbind__error
fi

if grep -q $DRIVE /proc/mounts ; then
    echo "$umount_notice"
    /bin/umount $fd &>/dev/null || \
	failure "$umount__error"
fi

echo "$format_notice"
/usr/sbin/fdformat -n $DRIVE &>/dev/null || \
    failure "$format__error"

echo "$create_notice"
/sbin/mke2fs -q $DRIVE &>/dev/null || \
    failure "$create__error"

echo "$mount__notice"
/bin/mount /dev/fd0 $fd -t ext2 -o sync,noatime,noexec,nosuid,nodev &>/dev/null || \
    failure "$mount___error"

#
# Check to make sure we have enough space to copy the config dir
#
fd_space_avail=`df -k $fd | tail -1 | awk '{ print $4 }'`
space_needed=`du -s ${vyatta_sysconfdir}/config | awk  '{ print $1 }'`

if [ $fd_space_avail -gt $space_needed ]; then
  echo "$config_notice"
  /bin/mkdir $fd/config
  /usr/bin/find ${vyatta_sysconfdir}/config -maxdepth 1 -mindepth 1 \
    -exec /bin/cp '-a' '{}' "$fd/config" ';'
  /bin/chgrp -R vyattacfg $fd/config
  /bin/chmod -R 775 $fd/config
else
  echo 'Not enough space to save current configuration directory'
  failure "$config__error"
fi

echo "$bind___notice"
/bin/mount -o bind $fd/config ${vyatta_sysconfdir}/config &>/dev/null || \
    failure "$bind____error"
# also, bind mount config directory to /config
/bin/mkdir -p /config
/bin/mount -o bind $fd/config /config &>/dev/null || \
    failure "$bind____error"

echo "$saved__notice"

if cli-shell-api existsActive system config-management commit-revisions ; then
   val=`cli-shell-api returnActiveValue \
        system config-management commit-revisions`
   if [ $? == "0" ] ; then 
      ${vyatta_sbindir}/vyatta-config-mgmt.pl  \
          --action=update-revs --revs=$val
   fi
fi

# Local Variables:
# mode: shell-script
# sh-indentation: 4
# End: