Files
ansible-freeipa/roles/ipaclient/library/ipaapi.py
Thomas Woerner dc0d1fc196 ipaclient: Fix gathering of subject_base from server in ipaapi.py module
The api command to get the server config is failing with more recent
freeipa versions. Therefore another way to gather the server config using
api.Backend.rpcclient.forward has been added in case the first version
fails.

The new code is from freeipa commit 8af6accfa5734a7e9a7c92fcf38d5440482413d4
(https://github.com/freeipa/freeipa/commit/8af6accf)
2018-11-21 17:13:15 +01:00

221 lines
7.3 KiB
Python

#!/usr/bin/python
# -*- 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: ipaapi
short description: Create temporary NSS database, call IPA API for remaining enrollment parts
description:
Create temporary NSS database, call IPA API for remaining enrollment parts
options:
realm:
description: The Kerberos realm of an existing IPA deployment.
required: true
hostname:
description: The hostname of the machine to join (FQDN).
required: true
debug:
description: Turn on extra debugging
required: false
type: bool
default: no
author:
- Thomas Woerner
'''
EXAMPLES = '''
- name: IPA API calls for remaining enrollment parts
ipaapi:
servers: ["server1.example.com","server2.example.com"]
domain: example.com
hostname: client1.example.com
register: ipaapi
'''
RETURN = '''
ca_enabled:
description: Wheter the Certificate Authority is enabled or not.
returned: always
type: bool
subject_base:
description: The subject base, needed for certmonger
returned: always
type: string
sample: O=EXAMPLE.COM
'''
import os
import sys
import time
import tempfile
import inspect
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.ansible_ipa_client import *
def main():
module = AnsibleModule(
argument_spec = dict(
servers=dict(required=True, type='list'),
realm=dict(required=True),
hostname=dict(required=True),
debug=dict(required=False, type='bool', default="false")
),
supports_check_mode = True,
)
module._ansible_debug = True
realm = module.params.get('realm')
hostname = module.params.get('hostname')
servers = module.params.get('servers')
debug = module.params.get('debug')
host_principal = 'host/%s@%s' % (hostname, realm)
os.environ['KRB5CCNAME'] = paths.IPA_DNS_CCACHE
ca_certs = x509.load_certificate_list_from_file(paths.IPA_CA_CRT)
if NUM_VERSION >= 40500 and NUM_VERSION < 40590:
ca_certs = [ cert.public_bytes(serialization.Encoding.DER)
for cert in ca_certs ]
elif NUM_VERSION < 40500:
ca_certs = [ cert.der_data for cert in ca_certs ]
with certdb.NSSDatabase() as tmp_db:
api.bootstrap(context='cli_installer',
confdir=paths.ETC_IPA,
debug=debug,
delegate=False,
nss_dir=tmp_db.secdir)
if 'config_loaded' not in api.env:
module.fail_json(msg="Failed to initialize IPA API.")
# Clear out any current session keyring information
try:
delete_persistent_client_session_data(host_principal)
except ValueError:
pass
# Add CA certs to a temporary NSS database
try:
if NUM_VERSION > 40404:
tmp_db.create_db()
for i, cert in enumerate(ca_certs):
tmp_db.add_cert(cert,
'CA certificate %d' % (i + 1),
certdb.EXTERNAL_CA_TRUST_FLAGS)
else:
pwd_file = write_tmp_file(ipa_generate_password())
tmp_db.create_db(pwd_file.name)
for i, cert in enumerate(ca_certs):
tmp_db.add_cert(cert, 'CA certificate %d' % (i + 1), 'C,,')
except CalledProcessError as e:
module.fail_json(msg="Failed to add CA to temporary NSS database.")
api.finalize()
# Now, let's try to connect to the server's RPC interface
connected = False
try:
api.Backend.rpcclient.connect()
connected = True
module.debug("Try RPC connection")
api.Backend.rpcclient.forward('ping')
except errors.KerberosError as e:
if connected:
api.Backend.rpcclient.disconnect()
module.log(
"Cannot connect to the server due to Kerberos error: %s. "
"Trying with delegate=True" % e)
try:
api.Backend.rpcclient.connect(delegate=True)
module.debug("Try RPC connection")
api.Backend.rpcclient.forward('ping')
module.log("Connection with delegate=True successful")
# The remote server is not capable of Kerberos S4U2Proxy
# delegation. This features is implemented in IPA server
# version 2.2 and higher
module.warn(
"Target IPA server has a lower version than the enrolled "
"client")
module.warn(
"Some capabilities including the ipa command capability "
"may not be available")
except errors.PublicError as e2:
module.fail_json(
msg="Cannot connect to the IPA server RPC interface: %s" % e2)
except errors.PublicError as e:
module.fail_json(
msg="Cannot connect to the server due to generic error: %s" % e)
# Use the RPC directly so older servers are supported
try:
result = api.Backend.rpcclient.forward(
'ca_is_enabled',
version=u'2.107',
)
ca_enabled = result['result']
except (errors.CommandError, errors.NetworkError):
result = api.Backend.rpcclient.forward(
'env',
server=True,
version=u'2.0',
)
ca_enabled = result['result']['enable_ra']
if not ca_enabled:
disable_ra()
# Get subject base from ipa server
try:
config = api.Command['config_show']()['result']
subject_base = str(DN(config['ipacertificatesubjectbase'][0]))
except errors.PublicError as e:
try:
config = api.Backend.rpcclient.forward(
'config_show',
raw=True, # so that servroles are not queried
version=u'2.0'
)['result']
except Exception as e:
logger.debug("config_show failed %s", e, exc_info=True)
module.fail_json(
"Failed to retrieve CA certificate subject base: {}".format(e),
rval=CLIENT_INSTALL_ERROR)
else:
subject_base = str(DN(config['ipacertificatesubjectbase'][0]))
module.exit_json(changed=True,
ca_enabled=ca_enabled,
subject_base=subject_base)
if __name__ == '__main__':
main()