# -*- coding: utf-8 -*-

# Authors:

#   Thomas Woerner <twoerner@redhat.com>

#

# Based on ipa-client-install code

#

# Copyright (C) 2017  Red Hat

# see file 'COPYING' for use and warranty information

#

# 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/>.

ANSIBLE_METADATA = {'metadata_version': '1.0',

                    'status': ['preview'],

                    'supported_by': 'community'}

DOCUMENTATION = '''

---

module: ipaclient_fix_ca

short description: Fix IPA ca certificate

description:

Repair Fix IPA ca certificate

options:

  servers:

    description: Fully qualified name of IPA servers to enroll to

    required: no

  realm:

    description: Kerberos realm name of the IPA deployment

    required: no

  basedn:

    description: The basedn of the IPA server (of the form dc=example,dc=com)

    required: no

  allow_repair:

    description:

      Allow repair of already joined hosts. Contrary to ipaclient_force_join

      the host entry will not be changed on the server

    required: no

author:

    - Thomas Woerner

'''

EXAMPLES = '''

- name: Fix IPA ca certificate

  ipaclient_fix_ca:

    servers: ["server1.example.com","server2.example.com"]

    realm: EXAMPLE.COM

    basedn: dc=example,dc=com

    allow_repair: yes

'''

RETURN = '''

'''

import os

from ansible.module_utils.basic import AnsibleModule

from ansible.module_utils.ansible_ipa_client import (

    setup_logging,

    SECURE_PATH, paths, sysrestore, options, NUM_VERSION, get_ca_cert,

    get_ca_certs, errors

)

def main():

    module = AnsibleModule(

        argument_spec=dict(

            servers=dict(required=True, type='list'),

            realm=dict(required=True),

            basedn=dict(required=True),

            allow_repair=dict(required=True, type='bool'),

        ),

    )

    module._ansible_debug = True

    setup_logging()

    servers = module.params.get('servers')

    realm = module.params.get('realm')

    basedn = module.params.get('basedn')

    allow_repair = module.params.get('allow_repair')

    env = {'PATH': SECURE_PATH}

    fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)

    os.environ['KRB5CCNAME'] = paths.IPA_DNS_CCACHE

    options.ca_cert_file = None

    options.principal = None

    options.force = False

    options.password = None

    changed = False

    if not os.path.exists(paths.IPA_CA_CRT):

        if not allow_repair:

            module.fail_json(

                msg="%s missing, enable allow_repair to fix it." %

                paths.IPA_CA_CRT)

        # Repair missing ca.crt file

        try:

            os.environ['KRB5_CONFIG'] = env['KRB5_CONFIG'] = "/etc/krb5.conf"

            env['KRB5CCNAME'] = os.environ['KRB5CCNAME']

            if NUM_VERSION < 40100:

                get_ca_cert(fstore, options, servers[0], basedn)

            else:

                get_ca_certs(fstore, options, servers[0], basedn, realm)

            changed = True

            del os.environ['KRB5_CONFIG']

        except errors.FileError as e:

            module.fail_json(msg='%s' % e)

        except Exception as e:

            module.fail_json(msg="Cannot obtain CA certificate\n%s" % e)

    module.exit_json(changed=changed)

if __name__ == '__main__':

    main()