#!/usr/bin/python3
#
# Univention Monitoring Plugin
#  check_univention_smbd: check smbd status
#
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# Copyright 2007-2024 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,
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# the program is provided in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
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import subprocess

from univention.config_registry import ucr
from univention.monitoring import Alert


class SMBD(Alert):

    def write_metrics(self):
        smb_host = ucr['hostname']
        # TODO: ? smb_user = 'guest'

        # See Bug #45454, since samba erratum 165 this no longer works
        # for now only remove the -U "$SMB_USER"
        try:
            subprocess.check_output(['/usr/bin/smbclient', '-N', '-L', smb_host], stderr=subprocess.DEVNULL).decode('UTF-8', 'replace')
        except FileNotFoundError:
            self.write_metric('univention_smbd_accessible', -1)
            self.log.debug('Cannot find smbclient executable')
            return
        except subprocess.CalledProcessError as exc:
            self.write_metric('univention_smbd_accessible', 0)
            self.log.debug('smbclient failed: %s' % (exc.output.decode('UTF-8', 'replace'),))
            return
        self.write_metric('univention_smbd_accessible', 1)


if __name__ == '__main__':
    SMBD.main()
