mirror of
https://github.com/ansible-collections/community.general.git
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88ef840750
Simplify regex for identifying order number in DN (#7646) (#7697)
Assume that if a string of digits occurs between curly braces anywhere
in the first component of the DN, that this is an order number. The
sequence does not necessarily have to occur after an equals sign.
(cherry picked from commit a5cd4ebea2)
Co-authored-by: Aaron Sowry <aeneby@users.noreply.github.com>
145 lines
4.9 KiB
Python
145 lines
4.9 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (c) 2016, Peter Sagerson <psagers@ignorare.net>
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# Copyright (c) 2016, Jiri Tyr <jiri.tyr@gmail.com>
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# Copyright (c) 2017-2018 Keller Fuchs (@KellerFuchs) <kellerfuchs@hashbang.sh>
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#
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# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
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# SPDX-License-Identifier: GPL-3.0-or-later
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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import re
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import traceback
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from ansible.module_utils.common.text.converters import to_native
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try:
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import ldap
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import ldap.dn
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import ldap.filter
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import ldap.sasl
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HAS_LDAP = True
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SASCL_CLASS = {
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'gssapi': ldap.sasl.gssapi,
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'external': ldap.sasl.external,
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}
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except ImportError:
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HAS_LDAP = False
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def gen_specs(**specs):
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specs.update({
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'bind_dn': dict(),
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'bind_pw': dict(default='', no_log=True),
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'ca_path': dict(type='path'),
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'dn': dict(required=True),
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'referrals_chasing': dict(type='str', default='anonymous', choices=['disabled', 'anonymous']),
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'server_uri': dict(default='ldapi:///'),
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'start_tls': dict(default=False, type='bool'),
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'validate_certs': dict(default=True, type='bool'),
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'sasl_class': dict(choices=['external', 'gssapi'], default='external', type='str'),
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'xorder_discovery': dict(choices=['enable', 'auto', 'disable'], default='auto', type='str'),
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'client_cert': dict(default=None, type='path'),
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'client_key': dict(default=None, type='path'),
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})
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return specs
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def ldap_required_together():
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return [['client_cert', 'client_key']]
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class LdapGeneric(object):
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def __init__(self, module):
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# Shortcuts
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self.module = module
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self.bind_dn = self.module.params['bind_dn']
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self.bind_pw = self.module.params['bind_pw']
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self.ca_path = self.module.params['ca_path']
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self.referrals_chasing = self.module.params['referrals_chasing']
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self.server_uri = self.module.params['server_uri']
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self.start_tls = self.module.params['start_tls']
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self.verify_cert = self.module.params['validate_certs']
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self.sasl_class = self.module.params['sasl_class']
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self.xorder_discovery = self.module.params['xorder_discovery']
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self.client_cert = self.module.params['client_cert']
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self.client_key = self.module.params['client_key']
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# Establish connection
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self.connection = self._connect_to_ldap()
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if self.xorder_discovery == "enable" or (self.xorder_discovery == "auto" and not self._xorder_dn()):
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# Try to find the X_ORDERed version of the DN
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self.dn = self._find_dn()
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else:
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self.dn = self.module.params['dn']
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def fail(self, msg, exn):
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self.module.fail_json(
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msg=msg,
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details=to_native(exn),
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exception=traceback.format_exc()
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)
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def _find_dn(self):
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dn = self.module.params['dn']
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explode_dn = ldap.dn.explode_dn(dn)
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if len(explode_dn) > 1:
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try:
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escaped_value = ldap.filter.escape_filter_chars(explode_dn[0])
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filterstr = "(%s)" % escaped_value
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dns = self.connection.search_s(','.join(explode_dn[1:]),
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ldap.SCOPE_ONELEVEL, filterstr)
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if len(dns) == 1:
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dn, dummy = dns[0]
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except Exception:
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pass
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return dn
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def _connect_to_ldap(self):
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if not self.verify_cert:
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ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, ldap.OPT_X_TLS_NEVER)
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if self.ca_path:
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ldap.set_option(ldap.OPT_X_TLS_CACERTFILE, self.ca_path)
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if self.client_cert and self.client_key:
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ldap.set_option(ldap.OPT_X_TLS_CERTFILE, self.client_cert)
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ldap.set_option(ldap.OPT_X_TLS_KEYFILE, self.client_key)
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connection = ldap.initialize(self.server_uri)
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if self.referrals_chasing == 'disabled':
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# Switch off chasing of referrals (https://github.com/ansible-collections/community.general/issues/1067)
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connection.set_option(ldap.OPT_REFERRALS, 0)
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if self.start_tls:
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try:
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connection.start_tls_s()
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except ldap.LDAPError as e:
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self.fail("Cannot start TLS.", e)
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try:
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if self.bind_dn is not None:
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connection.simple_bind_s(self.bind_dn, self.bind_pw)
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else:
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klass = SASCL_CLASS.get(self.sasl_class, ldap.sasl.external)
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connection.sasl_interactive_bind_s('', klass())
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except ldap.LDAPError as e:
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self.fail("Cannot bind to the server.", e)
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return connection
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def _xorder_dn(self):
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# match X_ORDERed DNs
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regex = r".+\{\d+\}.+"
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explode_dn = ldap.dn.explode_dn(self.module.params['dn'])
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return re.match(regex, explode_dn[0]) is not None
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