#!/usr/bin/env python

import os

def configure(conf):
    kerberos_py = conf.srcdir + "/python/samba/provision/kerberos_implementation.py"

    f = open(kerberos_py, 'w')
    try:
        header = """#
# Copyright (c) 2016      Andreas Schneider <asn@samba.org>
#
# 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 for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
"""
        f.write(header)

        data = """kdb_modules_dir = "{0}"
kdc_default_config_dir = "{1}"
"""

        if conf.env.HEIMDAL_KRB5_CONFIG:
            f.write(data.format("", ""))
        else:
            modulesdir = "%s/krb5/plugins/kdb" % conf.env.LIBDIR
            paths = [ "/var/kerberos/krb5kdc", "/var/lib/kerberos/krb5kdc" ]
            kdc_path = None
            for p in paths:
                if os.path.exists(p):
                    kdc_path = p

            f.write(data.format(modulesdir, kdc_path))
    finally:
        f.close()