#!/bin/bash
#
# Univention Server
#  helper script: activates accounts with krb5ValidStart >= now
#
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#
# Copyright 2021-2023 Univention GmbH
#
# https://www.univention.de/
#
# All rights reserved.
#
# The source code of this program is made available
# under the terms of the GNU Affero General Public License version 3
# (GNU AGPL V3) as published by the Free Software Foundation.
#
# Binary versions of this program provided by Univention to you as
# well as other copyrighted, protected or trademarked materials like
# Logos, graphics, fonts, specific documentations and configurations,
# cryptographic keys etc. are subject to a license agreement between
# you and Univention and not subject to the GNU AGPL V3.
#
# In the case you use this program under the terms of the GNU AGPL V3,
# the program is provided 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License with the Debian GNU/Linux or Univention distribution in file
# /usr/share/common-licenses/AGPL-3; if not, see
# <https://www.gnu.org/licenses/>.

ts_utc=$(date --utc +"%Y%m%d%H%M%SZ")

while read -r DN; do
	ldif=$(ldapsearch -Y EXTERNAL -H LDAPI:// -LLL -o ldif-wrap=no -b "$DN" -s base "(krb5ValidEnd<=$ts_utc)" 1.1 2>/dev/null | ldapsearch-decode64 | sed -n 's/^dn: //p')
	if [ -z "$ldif" ]; then
		udm users/user modify \
		--dn "$DN" \
		--set disabled=0 \
		--remove accountActivationDate
	else
		## Edge case clean up, account has expired due to krb5ValidEnd, so disabled state must not change, but krb5ValidStart should be unset
		udm users/user modify \
		--dn "$DN" \
		--remove accountActivationDate
	fi
done < <(ldapsearch -Y EXTERNAL -H LDAPI:// -LLL -o ldif-wrap=no "(krb5ValidStart<=$ts_utc)" 1.1 2>/dev/null | ldapsearch-decode64 | sed -n 's/^dn: //p')
