#!/usr/bin/python3
#
# Univention SSL
#  checks validity of the local SSL certificate
#
# SPDX-FileCopyrightText: 2006-2025 Univention GmbH
# SPDX-License-Identifier: AGPL-3.0-only

import calendar
import time

from M2Crypto import X509

from univention.config_registry import ConfigRegistry


_bc = ConfigRegistry()
_bc.load()


def get_validity_date(certFile):
    """returns the validity date fo the locale SSL certificate or None on failure"""
    try:
        x509 = X509.load_cert(certFile)
        return str(x509.get_not_after())
    except Exception:
        return None


def get_validity_days(certFile):
    """
    returns the validity of the local SSL certificate in days. If the
    validity could not be determined 0 is returned
    """
    after = get_validity_date(certFile)
    if after:
        time_after = time.strptime(after, "%b %d %H:%M:%S %Y %Z")
        return calendar.timegm(time_after) // 60 // 60 // 24

    return 0


if __name__ == '__main__':
    fqdn = '.'.join([_bc['hostname'], _bc['domainname']])
    caExpiry = False

    days = get_validity_days('/etc/univention/ssl/%s/cert.pem' % fqdn)
    days_ca = get_validity_days('/etc/univention/ssl/ucsCA/CAcert.pem')

    if days and days != _bc.get('ssl/validity/host', -1):
        _bc['ssl/validity/host'] = str(days)
        _bc.save()

    if days_ca and days_ca != _bc.get('ssl/validity/root', -1):
        _bc['ssl/validity/root'] = str(days_ca)
        _bc.save()
