#!/bin/sh
#
# Copyright (C) Matthieu Patou <mat@matws.net> 2010-2011
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

FROMWHERE=/usr/local/samba
WHERE=/usr/local/backups
if [ -n "$1" ] && [ "$1" = "-h" -o "$1" = "--usage" ]; then
	echo "samba_backup [provisiondir] [destinationdir]"
	echo "Will backup your provision located in provisiondir to archive stored in destinationdir"
	echo "Default provisiondir: $FROMWHERE"
	echo "Default destinationdir: $WHERE"
	exit 0
fi

[ -n "$1" -a -d "$1" ]&&FROMWHERE=$1
[ -n "$2" -a -d "$2" ]&&WHERE=$2

DIRS="private etc sysvol"
#Number of days to keep the backup
DAYS=90
WHEN=`date +%d%m%y`

if [ ! -d $WHERE ]; then
	echo "Missing backup directorty $WHERE"
	exit 1
fi

if [ ! -d $FROMWHERE ]; then
	echo "Missing or wrong provision directorty $FROMWHERE"
	exit 1
fi

cd $FROMWHERE
for d in $DIRS;do
	relativedirname=`find . -type d -name "$d" -prune`
	n=`echo $d | sed 's/\//_/g'`
	if [ "$d" = "private" ]; then
		find $relativedirname -name "*.ldb.bak" -exec rm {} \;
		for ldb in `find $relativedirname -name "*.ldb"`; do
			tdbbackup $ldb
			if [ $? -ne 0 ]; then
				echo "Error while backuping $ldb"
				exit 1
			fi
		done
		tar cjf ${WHERE}/samba4_${n}.${WHEN}.tar.bz2  $relativedirname --exclude=*.ldb >/dev/null 2>&1
		if [ $? -ne 0 ]; then
			echo "Error while archiving ${WHERE}/samba4_${n}.${WHEN}.tar.bz2"
			exit 1
		fi
		find $relativedirname -name "*.ldb.bak" -exec rm {} \;
	else
		tar cjf ${WHERE}/${n}.${WHEN}.tar.bz2  $relativedirname >/dev/null 2>&1
		if [ $? -ne 0 ]; then
			echo "Error while archiving ${WHERE}/${n}.${WHEN}.tar.bz2"
			exit 1
		fi
	fi
done

find $WHERE -name "samba4_*bz2" -mtime +90 -exec rm  {} \; >/dev/null 2>&1