#!/bin/sh
#------------------------------------------------------------------------------
# /var/install/bin/ldapserver-backup-database - backup LDAP database
#
# Copyright (c) 2009-2023  The Eisfair Team, team(at)eisfair(dot)org
#
# Creation   : 2009-11-17 jed
# Last Update: $Id$
#
# Usage:
#   ldapserver-backup-database         - run in interactive mode.
#
#   ldapserver-backup-database --help  - show this help.
#
#   ldapserver-backup-database -backupfile <ldif-backup-file>
#                                      - create ldif backup file in batch mode.
#
#   ldapserver-backup-database -backuppath <ldif-backup-path>
#                                      - create ldif backup file in batch mode.
#
# 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 2 of the License, or
# (at your option) any later version.
#------------------------------------------------------------------------------

# read eislib
. /var/install/include/eislib

#exec 2>/tmp/ldapserver-backup-database-trace-$$.log
#set -x

# command line parameter
batch=0
quiet=0
if [ $# -gt 0 ]
then
    # read parameter(s)
    while [ $# -gt 0 ]
    do
        case $1 in
            -backupfile|--backupfile )
                batch=1
                ldap_backup_file="$2"
                shift; shift
                ;;
            -backuppath|--backuppath )
                batch=1
                ldap_backup_path="`echo "$2" | sed 's#/$##'`"
                shift; shift
                ;;
            -help|--help|-?|/? )
                echo
                echo "Usage:"
                echo "  ldapserver-backup-database         - run in interactive mode"
                echo
                echo "  ldapserver-backup-database --help  - show this help"
                echo
                echo "  ldapserver-backup-database -backupfile <ldif-backup-file>"
                echo "                                     - create ldif backup file in batch mode"
                echo
                echo "  ldapserver-backup-database -backuppath <ldif-backup-path>"
                echo "                                     - create ldif backup file in batch mode"
                exit 1
                ;;
            * )
                break
                ;;
        esac
    done
fi

ldap_confpath=/etc/openldap
ldap_datapath=/var/lib/openldap
tmppath='/tmp'

configfile=/etc/config.d/ldapserver
ldapserver_logfile=${ldap_datapath}/ldapserver-ldap-backup.log

exit_code=0
if [ -f ${configfile} ]
then
    . ${configfile}

    if [ -z "${ldap_backup_path}" ]
    then
        if [ "${LDAPSERVER_BACKUP}" = 'yes' ]
        then
            ldap_backup_path="${LDAPSERVER_BACKUP_PATH}"
        else
            ldap_backup_path="${tmppath}"
        fi
    fi

    if [ -z "${ldap_backup_file}" ]
    then
        # backup path given, set default file name
        ldap_backup_file=${ldap_backup_path}/`echo ${LDAPSERVER_LDAP_BASEDN} | sed -e 's/dc= *//g' -e 's/[ ,]*//g'`-${EISDATE}-${EISTIME}.ldif
    fi


    if [ ${batch} -eq 0 ]
    then
        # interactive mode
        clrhome
        mecho --info "Backup LDAP database"
        mecho

        ldap_backup_file=$(/var/install/bin/ask "Please enter the backup file name (full path) [q]" "${ldap_backup_file}" "+")
        if [ "${ldap_backup_file}" = "q" -o "${ldap_backup_file}" = "Q" ]
        then
            exit 0
        fi
    fi

    destpath="`dirname ${ldap_backup_file}`"

    if [ ${batch} -eq 1 -a ! -d "${destpath}" ]
    then
        # make sure that directory path exists in batch mode
        mkdir -p "${destpath}"
    fi

    if [ -d "${destpath}" ]
    then
        if [ -f ${ldap_backup_file} ]
        then
            if [ ${batch} -eq 0 ]
            then
                # interactive mode
                mecho --warn "The LDAP backup file '${ldap_backup_file}' already exists."
                mecho
                if /var/install/bin/ask "Do you want to overwrite it" "no"
                then
                    rm -f ${ldap_backup_file}
                else
                    mecho --error "LDAP database backup aborted."
                    exit 1
                fi
            else
                # batch mode
                mv ${ldap_backup_file} ${ldap_backup_file}.backup
            fi
        fi

        # check if directory path is accessible and writeble
        touch ${ldap_backup_file}.TEST 2>/dev/null

        if [ $? -eq 0 ]
        then
            # directory path is accessible and writeble, go on ...
            rm -f ${ldap_backup_file}.TEST

            # remove previous backup file
            rm -f ${ldapserver_logfile}

            echo "date: ${EISDATE} ${EISTIME}" > ${ldapserver_logfile}

            # shutdown server
            /usr/sbin/service stop ldapserver 2>&1 | /usr/bin/ansifilter >> ${ldapserver_logfile}
            echo >> ${ldapserver_logfile}

            # backup LDAP database
            /usr/sbin/slapcat -v -f ${ldap_confpath}/slapd.conf -l ${ldap_backup_file} >> ${ldapserver_logfile} 2>> ${ldapserver_logfile}
            ret=$?

            if [ ${ret} -eq 0 ]
            then
                if [ ${batch} -eq 0 ]
                then
                    # interactive mode
                    mecho "LDAP directory successfully safed to file '${ldap_backup_file}."
                fi
            else
                mecho --error "Error '${ret}' during backup of LDAP directory tree. Please try again!"
                exit_code=5
            fi

            echo >> ${ldapserver_logfile}

            # start server
            /usr/sbin/service start ldapserver 2>&1 | /usr/bin/ansifilter >> ${ldapserver_logfile}

            if [ ${batch} -eq 0 ]
            then
                # interactive mode
                # check if show-doc.cui supports colors
                color=''
                frame=''
                if $(grep -qE "^MENU=['\"]/var/install/bin/show-menu['\"]"  /etc/config.d/setup)
                then
                    color='--nocolor'
                    frame='--noframe'
                fi

                sleep 3
                /var/install/bin/show-doc.cui ${color} ${frame} --follow --title ${ldapserver_logfile} ${ldapserver_logfile}
            fi
        else
            mecho --error "Destination directory '${destpath}' unaccessible!"
            exit_code=4
        fi
    else
        mecho --error "Destination directory '${destpath}' doesn't exist!"
        exit_code=3
    fi
else
    mecho --error "Configuration file '${configfile}' doesn't exist!"
    exit_code=2
fi

exit ${exit_code}