#!/bin/sh
#
# This file is part of OpenMediaVault.
#
# @license   http://www.gnu.org/licenses/gpl.html GPL Version 3
# @author    Volker Theile <volker.theile@openmediavault.org>
# @copyright Copyright (c) 2009-2012 Volker Theile
#
# OpenMediaVault 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
# any later version.
#
# OpenMediaVault 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 OpenMediaVault. If not, see <http://www.gnu.org/licenses/>.

set -e

. /etc/default/openmediavault
. /usr/share/openmediavault/scripts/helper-functions

OMV_AVAHIDAEMON_NFSSERVICE=${OMV_AVAHIDAEMON_NFSSERVICE:-"/etc/avahi/services/nfs*.service"}
OMV_AVAHIDAEMON_NFSSERVICE_PORT=${OMV_AVAHIDAEMON_NFSSERVICE_PORT:-"2049"}

# Is the service enabled? Announce this service via DNS-SD?
rm -f ${OMV_AVAHIDAEMON_NFSSERVICE}
[ "$(omv_config_get "//services/nfs/enable")" = "0" -o "$(omv_config_get "//services/nfs/dnssd/enable")" = "0" ] && exit 0

# Announce duplicate shares only once (emulate SQL 'DISTINCT' to filter
# duplicates).
name=$(omv_config_get "//services/nfs/dnssd/name")
xmlstarlet sel -t -m "//services/nfs/shares/share[not(sharedfolderref=preceding-sibling::*/sharedfolderref)]" \
  -v sharedfolderref -i "position() != last()" -n -b \
  ${OMV_CONFIG_FILE} | xmlstarlet unesc |
  while read sfref; do
	  sfname=$(omv_get_sharedfolder_name ${sfref})
	  filename="/etc/avahi/services/nfs-${sfname}.service"
	  cat <<EOF > ${filename}
<?xml version="1.0" standalone='no'?>
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
<service-group>
  <name replace-wildcards="yes">${name} - ${sfname}</name>
  <service>
    <type>_nfs._tcp</type>
    <port>${OMV_AVAHIDAEMON_NFSSERVICE_PORT}</port>
    <txt-record>path=${OMV_NFSD_EXPORT_DIR}/${sfname}</txt-record>
  </service>
</service-group>
EOF
  done

# Create '/etc/avahi/services/nfs.service' file.
#cat <<EOF > ${OMV_AVAHIDAEMON_NFSSERVICE}
#<?xml version="1.0" standalone='no'?>
#<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
#<service-group>
#  <name replace-wildcards="yes">${OMV_AVAHIDAEMON_NFSSERVICE_NAME}</name>
#EOF

# Announce duplicate shares only once (emulate SQL 'DISTINCT' to filter
# duplicates).
#xmlstarlet sel -t -m "//services/nfs/shares/share[not(sharedfolderref=preceding-sibling::*/sharedfolderref)]" \
#  -v sharedfolderref -i "position() != last()" -n -b \
#  ${OMV_CONFIG_FILE} | xmlstarlet unesc |
#  while read sfref; do
#	  sfname=$(omv_get_sharedfolder_name ${sfref})
#cat <<EOF >> ${OMV_AVAHIDAEMON_NFSSERVICE}
#  <service>
#    <type>_nfs._tcp</type>
#    <port>${OMV_AVAHIDAEMON_NFSSERVICE_PORT}</port>
#    <txt-record>path=${OMV_NFSD_EXPORT_DIR}/${sfname}</txt-record>
#  </service>
#EOF
#  done

#cat <<EOF >> ${OMV_AVAHIDAEMON_NFSSERVICE}
#</service-group>
#EOF
