#!/bin/bash
#
# nombre              : restore-ldap
# descripción         : Permite realizar una restauración de la configuración y la B.D. LDAP
# autor               : Esteban M. Navas Martín
# fecha creación      : 05042016
# última modificación : 06042017
# uso                 : restore-ldap [-c|--config] backup-config-ldap-file [-d|--data] backup-data-ldap-file
# instalación         : Guardar en  /usr/local/sbin/

#
# Copyright 2015, Esteban M. Navas Martín <algodelinux@gmail.com>
#
# 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 at <http://www.gnu.org/licenses/> for
# more details.
#

basenameconfig="backup-config-ldap"
basenamedb="backup-db-ldap"

function uso {
   echo "Debe indicar si desea restaurar la configuración o los datos:"
   echo "USO: $(basename $0) --config $basenameconfig.ldif (para restaurar la configuración)"
   echo "USO: $(basename $0) --data $basenamedb.ldif (para restaurar los datos)"
}

function restorefile {
  local filename=$1
  local filetype=$2

  /bin/systemctl stop slapd.service

  if [ -f $filename ]; then
     case "$filetype" in
         "config") rm -r /etc/ldap/slapd.d/*; slapadd -n 0 -F /etc/ldap/slapd.d -l $filename; chown -R openldap:openldap /etc/ldap/slapd.d ;;
         "data")  rm -r /var/lib/ldap/*; slapadd -n 1 -F /etc/ldap/slapd.d -l $filename; chown -R openldap:openldap /var/lib/ldap ;;
         *) echo "Error al indicar el tipo" ;;
     esac
     /usr/sbin/slapindex -vF /etc/ldap/slapd.d; /bin/systemctl start slapd.service && /bin/systemctl restart pdns-recursor.service && /bin/systemctl restart pdns.service && sleep 2 && /bin/systemctl restart isc-dhcp-server.service

  else
     echo "El fichero $filename no existe."
  fi
}

# Si no hay parámetros, mostramos ayuda y finalizamos
if [ -z "$1" ]; then
   uso
   exit 1;
fi

# read the options
TEMP=`getopt -o hc:d: --long help,config:,data: -n "$0" -- "$@"`
eval set -- "$TEMP"

# extract options and their arguments into variables.
while true; do
   case "$1" in
       -c|--config)
            case "$2" in
                "") fileconfig=" "; shift 2 ;;
                *) restorefile $2 config; shift 2 ;;
            esac ;;
       -d|--data)
            case "$2" in
                "") filedata=" "; shift 2 ;;
                *) restorefile $2 data; shift 2 ;;
            esac ;;
       --)  shift ; break ;;
       -h | *) # Display help.
            uso
            exit 0 ;;
   esac
done