#!/bin/sh
#
# koha-dump: dump all contents and configs for a Koha site
# Copyright 2010  Catalyst IT, Ltd
# 
# 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/>.


set -e


# Make sure the files we create are not accessible by anyone else.
umask 0077


die() {
    echo "$@" 1>&2
    exit 1
}


# Parse command line.
[ "$#" = 1 ] || die "Usage: $0 instancename"
name="$1"
kohaconfig="/etc/koha/sites/$name/koha-conf.xml"
date="$(date +%Y-%m-%d)"

echo "Dumping Koha site $name:"


# Dump database.
mysqlhost="$( xmlstarlet sel -t -v 'yazgfs/config/hostname' $kohaconfig )"
mysqldb="$( xmlstarlet sel -t -v 'yazgfs/config/database' $kohaconfig )"
mysqluser="$( xmlstarlet sel -t -v 'yazgfs/config/user' $kohaconfig )"
mysqlpass="$( xmlstarlet sel -t -v 'yazgfs/config/pass' $kohaconfig )"
backupdir="$( xmlstarlet sel -t -v 'yazgfs/config/backupdir' $kohaconfig )"
[ -z "$backupdir" ] && backupdir="/var/spool/koha/$name"
dbdump="$backupdir/$name-$date.sql.gz"
echo "* DB to $dbdump"
mysqldump --databases --host="$mysqlhost" \
    --user="$mysqluser" --password="$mysqlpass" "$mysqldb" | 
    gzip > "$dbdump"
chown "root:$name-koha" "$dbdump"
chmod g+r "$dbdump"


# Dump configs, logs, etc.
metadump="$backupdir/$name-$date.tar.gz"
echo "* configs, logs to $metadump"
tar -C / -czf "$metadump" \
    "etc/koha/sites/$name" \
    "etc/apache2/sites-available/$name" \
    "etc/apache2/sites-enabled/$name" \
    "var/lib/koha/$name" \
    "var/log/koha/$name"

echo "Done."