mirror of
https://salsa.debian.org/freeipa-team/freeipa.git
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ecf80900ee
The argument was not used at all. See: https://pagure.io/freeipa/issue/7689 Signed-off-by: Thomas Woerner <twoerner@redhat.com> Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
638 lines
24 KiB
Python
638 lines
24 KiB
Python
# Authors: Simo Sorce <ssorce@redhat.com>
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#
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# Copyright (C) 2007 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from __future__ import absolute_import
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from __future__ import print_function
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import logging
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import os
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import pwd
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import socket
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import dbus
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import dns.name
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from ipalib import x509
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from ipalib.install import certstore
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from ipaserver.install import service
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from ipaserver.install import installutils
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from ipapython import ipaldap
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from ipapython import ipautil
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from ipapython import kernel_keyring
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from ipalib import api, errors
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from ipalib.constants import ANON_USER
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from ipalib.install import certmonger
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from ipapython.dn import DN
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from ipapython.dogtag import KDC_PROFILE
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from ipaserver.install import replication
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from ipaserver.install import ldapupdate
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from ipaserver.install import certs
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from ipaplatform.constants import constants
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from ipaplatform.tasks import tasks
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from ipaplatform.paths import paths
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logger = logging.getLogger(__name__)
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PKINIT_ENABLED = 'pkinitEnabled'
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def get_pkinit_request_ca():
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"""
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Return the certmonger CA name which is serving the PKINIT certificate
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request. If the certificate is not tracked by Certmonger, return None
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"""
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pkinit_request_id = certmonger.get_request_id(
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{'cert-file': paths.KDC_CERT})
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if pkinit_request_id is None:
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return None
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return certmonger.get_request_value(pkinit_request_id, 'ca-name')
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def is_pkinit_enabled():
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"""
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check whether PKINIT is enabled on the master by checking for the presence
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of KDC certificate and it's tracking CA
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"""
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if os.path.exists(paths.KDC_CERT):
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pkinit_request_ca = get_pkinit_request_ca()
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if pkinit_request_ca != "SelfSign":
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return True
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return False
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class KpasswdInstance(service.SimpleServiceInstance):
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def __init__(self):
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service.SimpleServiceInstance.__init__(self, "kadmin")
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class KrbInstance(service.Service):
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def __init__(self, fstore=None):
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super(KrbInstance, self).__init__(
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"krb5kdc",
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service_desc="Kerberos KDC",
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fstore=fstore
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)
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self.fqdn = None
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self.realm = None
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self.domain = None
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self.host = None
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self.admin_password = None
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self.master_password = None
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self.suffix = None
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self.subject_base = None
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self.kdc_password = None
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self.sub_dict = None
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self.pkcs12_info = None
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self.master_fqdn = None
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self.config_pkinit = None
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suffix = ipautil.dn_attribute_property('_suffix')
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subject_base = ipautil.dn_attribute_property('_subject_base')
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def init_info(self, realm_name, host_name, setup_pkinit=False,
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subject_base=None):
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self.fqdn = host_name
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self.realm = realm_name
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self.suffix = ipautil.realm_to_suffix(realm_name)
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self.subject_base = subject_base
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self.config_pkinit = setup_pkinit
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def get_realm_suffix(self):
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return DN(('cn', self.realm), ('cn', 'kerberos'), self.suffix)
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def move_service_to_host(self, principal):
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"""
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Used to move a host/ service principal created by kadmin.local from
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cn=kerberos to reside under the host entry.
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"""
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service_dn = DN(('krbprincipalname', principal), self.get_realm_suffix())
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service_entry = api.Backend.ldap2.get_entry(service_dn)
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api.Backend.ldap2.delete_entry(service_entry)
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# Create a host entry for this master
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host_dn = DN(
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('fqdn', self.fqdn), ('cn', 'computers'), ('cn', 'accounts'),
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self.suffix)
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host_entry = api.Backend.ldap2.make_entry(
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host_dn,
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objectclass=[
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'top', 'ipaobject', 'nshost', 'ipahost', 'ipaservice',
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'pkiuser', 'krbprincipalaux', 'krbprincipal',
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'krbticketpolicyaux', 'ipasshhost'],
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krbextradata=service_entry['krbextradata'],
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krblastpwdchange=service_entry['krblastpwdchange'],
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krbprincipalname=service_entry['krbprincipalname'],
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krbcanonicalname=service_entry['krbcanonicalname'],
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krbprincipalkey=service_entry['krbprincipalkey'],
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serverhostname=[self.fqdn.split('.',1)[0]],
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cn=[self.fqdn],
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fqdn=[self.fqdn],
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ipauniqueid=['autogenerate'],
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managedby=[host_dn],
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)
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if 'krbpasswordexpiration' in service_entry:
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host_entry['krbpasswordexpiration'] = service_entry[
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'krbpasswordexpiration']
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if 'krbticketflags' in service_entry:
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host_entry['krbticketflags'] = service_entry['krbticketflags']
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api.Backend.ldap2.add_entry(host_entry)
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# Add the host to the ipaserver host group
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ld = ldapupdate.LDAPUpdate(ldapi=True)
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ld.update([os.path.join(paths.UPDATES_DIR,
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'20-ipaservers_hostgroup.update')])
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def __common_setup(self, realm_name, host_name, domain_name, admin_password):
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self.fqdn = host_name
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self.realm = realm_name.upper()
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self.host = host_name.split(".")[0]
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self.ip = socket.getaddrinfo(host_name, None, socket.AF_UNSPEC, socket.SOCK_STREAM)[0][4][0]
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self.domain = domain_name
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self.suffix = ipautil.realm_to_suffix(self.realm)
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self.kdc_password = ipautil.ipa_generate_password()
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self.admin_password = admin_password
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self.dm_password = admin_password
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self.__setup_sub_dict()
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self.backup_state("running", self.is_running())
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try:
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self.stop()
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except Exception:
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# It could have been not running
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pass
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def __common_post_setup(self):
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self.step("creating anonymous principal", self.add_anonymous_principal)
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self.step("starting the KDC", self.__start_instance)
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self.step("configuring KDC to start on boot", self.__enable)
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def create_instance(self, realm_name, host_name, domain_name, admin_password, master_password, setup_pkinit=False, pkcs12_info=None, subject_base=None):
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self.master_password = master_password
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self.pkcs12_info = pkcs12_info
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self.subject_base = subject_base
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self.config_pkinit = setup_pkinit
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self.__common_setup(realm_name, host_name, domain_name, admin_password)
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self.step("adding kerberos container to the directory", self.__add_krb_container)
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self.step("configuring KDC", self.__configure_instance)
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self.step("initialize kerberos container", self.__init_ipa_kdb)
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self.step("adding default ACIs", self.__add_default_acis)
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self.step("creating a keytab for the directory", self.__create_ds_keytab)
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self.step("creating a keytab for the machine", self.__create_host_keytab)
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self.step("adding the password extension to the directory", self.__add_pwd_extop_module)
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self.__common_post_setup()
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self.start_creation()
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self.kpasswd = KpasswdInstance()
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self.kpasswd.create_instance('KPASSWD', self.fqdn, self.suffix,
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realm=self.realm)
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def create_replica(self, realm_name,
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master_fqdn, host_name,
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domain_name, admin_password,
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setup_pkinit=False, pkcs12_info=None,
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subject_base=None):
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self.pkcs12_info = pkcs12_info
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self.subject_base = subject_base
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self.master_fqdn = master_fqdn
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self.config_pkinit = setup_pkinit
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self.__common_setup(realm_name, host_name, domain_name, admin_password)
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self.step("configuring KDC", self.__configure_instance)
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self.step("adding the password extension to the directory", self.__add_pwd_extop_module)
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self.__common_post_setup()
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self.start_creation()
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self.kpasswd = KpasswdInstance()
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self.kpasswd.create_instance('KPASSWD', self.fqdn, self.suffix)
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def __enable(self):
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self.backup_state("enabled", self.is_enabled())
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# We do not let the system start IPA components on its own,
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# Instead we reply on the IPA init script to start only enabled
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# components as found in our LDAP configuration tree
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self.ldap_configure('KDC', self.fqdn, None, self.suffix)
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def __start_instance(self):
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try:
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self.start()
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except Exception:
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logger.critical("krb5kdc service failed to start")
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def __setup_sub_dict(self):
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if os.path.exists(paths.COMMON_KRB5_CONF_DIR):
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includes = 'includedir {}'.format(paths.COMMON_KRB5_CONF_DIR)
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else:
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includes = ''
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self.sub_dict = dict(FQDN=self.fqdn,
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IP=self.ip,
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PASSWORD=self.kdc_password,
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SUFFIX=self.suffix,
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DOMAIN=self.domain,
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HOST=self.host,
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SERVER_ID=installutils.realm_to_serverid(self.realm),
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REALM=self.realm,
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KRB5KDC_KADM5_ACL=paths.KRB5KDC_KADM5_ACL,
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DICT_WORDS=paths.DICT_WORDS,
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KRB5KDC_KADM5_KEYTAB=paths.KRB5KDC_KADM5_KEYTAB,
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KDC_CERT=paths.KDC_CERT,
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KDC_KEY=paths.KDC_KEY,
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CACERT_PEM=paths.CACERT_PEM,
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KDC_CA_BUNDLE_PEM=paths.KDC_CA_BUNDLE_PEM,
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CA_BUNDLE_PEM=paths.CA_BUNDLE_PEM,
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INCLUDES=includes)
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# IPA server/KDC is not a subdomain of default domain
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# Proper domain-realm mapping needs to be specified
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domain = dns.name.from_text(self.domain)
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fqdn = dns.name.from_text(self.fqdn)
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if not fqdn.is_subdomain(domain):
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logger.debug("IPA FQDN '%s' is not located in default domain '%s'",
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fqdn, domain)
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server_domain = fqdn.parent().to_unicode(omit_final_dot=True)
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logger.debug("Domain '%s' needs additional mapping in krb5.conf",
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server_domain)
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dr_map = " .%(domain)s = %(realm)s\n %(domain)s = %(realm)s\n" \
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% dict(domain=server_domain, realm=self.realm)
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else:
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dr_map = ""
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self.sub_dict['OTHER_DOMAIN_REALM_MAPS'] = dr_map
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# Configure KEYRING CCACHE if supported
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if kernel_keyring.is_persistent_keyring_supported():
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logger.debug("Enabling persistent keyring CCACHE")
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self.sub_dict['OTHER_LIBDEFAULTS'] = \
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" default_ccache_name = KEYRING:persistent:%{uid}\n"
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else:
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logger.debug("Persistent keyring CCACHE is not enabled")
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self.sub_dict['OTHER_LIBDEFAULTS'] = ''
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# Create kadm5.acl if it doesn't exist
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if not os.path.exists(paths.KRB5KDC_KADM5_ACL):
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open(paths.KRB5KDC_KADM5_ACL, 'a').close()
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os.chmod(paths.KRB5KDC_KADM5_ACL, 0o600)
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def __add_krb_container(self):
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self._ldap_mod("kerberos.ldif", self.sub_dict)
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def __add_default_acis(self):
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self._ldap_mod("default-aci.ldif", self.sub_dict)
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def __template_file(self, path, chmod=0o644, client_template=False):
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if client_template:
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sharedir = paths.USR_SHARE_IPA_CLIENT_DIR
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else:
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sharedir = paths.USR_SHARE_IPA_DIR
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template = os.path.join(
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sharedir, os.path.basename(path) + ".template")
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conf = ipautil.template_file(template, self.sub_dict)
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self.fstore.backup_file(path)
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with open(path, 'w') as f:
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if chmod is not None:
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os.fchmod(f.fileno(), chmod)
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f.write(conf)
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def __init_ipa_kdb(self):
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# kdb5_util may take a very long time when entropy is low
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installutils.check_entropy()
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#populate the directory with the realm structure
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args = ["kdb5_util", "create", "-s",
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"-r", self.realm,
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"-x", "ipa-setup-override-restrictions"]
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dialogue = (
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# Enter KDC database master key:
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self.master_password + '\n',
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# Re-enter KDC database master key to verify:
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self.master_password + '\n',
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)
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try:
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ipautil.run(args, nolog=(self.master_password,), stdin=''.join(dialogue))
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except ipautil.CalledProcessError as error:
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logger.debug("kdb5_util failed with %s", error)
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raise RuntimeError("Failed to initialize kerberos container")
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def __configure_instance(self):
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self.__template_file(paths.KRB5KDC_KDC_CONF, chmod=None)
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self.__template_file(paths.KRB5_CONF)
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self.__template_file(paths.KRB5_FREEIPA, client_template=True)
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self.__template_file(paths.HTML_KRB5_INI)
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self.__template_file(paths.KRB_CON)
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self.__template_file(paths.HTML_KRBREALM_CON)
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MIN_KRB5KDC_WITH_WORKERS = "1.9"
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cpus = os.sysconf('SC_NPROCESSORS_ONLN')
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workers = False
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result = ipautil.run([paths.KLIST, '-V'],
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raiseonerr=False, capture_output=True)
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if result.returncode == 0:
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verstr = result.output.split()[-1]
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ver = tasks.parse_ipa_version(verstr)
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min = tasks.parse_ipa_version(MIN_KRB5KDC_WITH_WORKERS)
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if ver >= min:
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workers = True
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# Write down config file
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# We write realm and also number of workers (for multi-CPU systems)
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replacevars = {'KRB5REALM':self.realm}
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appendvars = {}
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if workers and cpus > 1:
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appendvars = {'KRB5KDC_ARGS': "'-w %s'" % str(cpus)}
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ipautil.backup_config_and_replace_variables(self.fstore, paths.SYSCONFIG_KRB5KDC_DIR,
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replacevars=replacevars,
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appendvars=appendvars)
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tasks.restore_context(paths.SYSCONFIG_KRB5KDC_DIR)
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#add the password extop module
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def __add_pwd_extop_module(self):
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self._ldap_mod("pwd-extop-conf.ldif", self.sub_dict)
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def __create_ds_keytab(self):
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ldap_principal = "ldap/" + self.fqdn + "@" + self.realm
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installutils.kadmin_addprinc(ldap_principal)
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self.move_service(ldap_principal)
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self.fstore.backup_file(paths.DS_KEYTAB)
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installutils.create_keytab(paths.DS_KEYTAB, ldap_principal)
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vardict = {"KRB5_KTNAME": paths.DS_KEYTAB}
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ipautil.config_replace_variables(paths.SYSCONFIG_DIRSRV,
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replacevars=vardict)
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pent = pwd.getpwnam(constants.DS_USER)
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os.chown(paths.DS_KEYTAB, pent.pw_uid, pent.pw_gid)
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def __create_host_keytab(self):
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host_principal = "host/" + self.fqdn + "@" + self.realm
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installutils.kadmin_addprinc(host_principal)
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self.fstore.backup_file(paths.KRB5_KEYTAB)
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installutils.create_keytab(paths.KRB5_KEYTAB, host_principal)
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# Make sure access is strictly reserved to root only for now
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os.chown(paths.KRB5_KEYTAB, 0, 0)
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os.chmod(paths.KRB5_KEYTAB, 0o600)
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self.move_service_to_host(host_principal)
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def _wait_for_replica_kdc_entry(self):
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master_dn = self.api.Object.server.get_dn(self.fqdn)
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kdc_dn = DN(('cn', 'KDC'), master_dn)
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ldap_uri = ipaldap.get_ldap_uri(self.master_fqdn)
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with ipaldap.LDAPClient(
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ldap_uri, cacert=paths.IPA_CA_CRT, start_tls=True
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) as remote_ldap:
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remote_ldap.gssapi_bind()
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replication.wait_for_entry(
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remote_ldap,
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kdc_dn,
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timeout=api.env.replication_wait_timeout
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)
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def _call_certmonger(self, certmonger_ca='IPA'):
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subject = str(DN(('cn', self.fqdn), self.subject_base))
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krbtgt = "krbtgt/" + self.realm + "@" + self.realm
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certpath = (paths.KDC_CERT, paths.KDC_KEY)
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try:
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prev_helper = None
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# on the first CA-ful master without '--no-pkinit', we issue the
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# certificate by contacting Dogtag directly
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use_dogtag_submit = all(
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[self.master_fqdn is None,
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self.pkcs12_info is None,
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self.config_pkinit])
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if use_dogtag_submit:
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ca_args = [
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paths.CERTMONGER_DOGTAG_SUBMIT,
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'--ee-url', 'https://%s:8443/ca/ee/ca' % self.fqdn,
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'--certfile', paths.RA_AGENT_PEM,
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'--keyfile', paths.RA_AGENT_KEY,
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'--cafile', paths.IPA_CA_CRT,
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'--agent-submit'
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]
|
|
helper = " ".join(ca_args)
|
|
prev_helper = certmonger.modify_ca_helper(
|
|
certmonger_ca, helper
|
|
)
|
|
|
|
certmonger.request_and_wait_for_cert(
|
|
certpath=certpath,
|
|
subject=subject,
|
|
principal=krbtgt,
|
|
ca=certmonger_ca,
|
|
dns=self.fqdn,
|
|
storage='FILE',
|
|
profile=KDC_PROFILE,
|
|
post_command='renew_kdc_cert',
|
|
perms=(0o644, 0o600),
|
|
resubmit_timeout=api.env.replication_wait_timeout
|
|
)
|
|
except dbus.DBusException as e:
|
|
# if the certificate is already tracked, ignore the error
|
|
name = e.get_dbus_name()
|
|
if name != 'org.fedorahosted.certmonger.duplicate':
|
|
logger.error("Failed to initiate the request: %s", e)
|
|
return
|
|
finally:
|
|
if prev_helper is not None:
|
|
certmonger.modify_ca_helper(certmonger_ca, prev_helper)
|
|
|
|
def pkinit_enable(self):
|
|
"""
|
|
advertise enabled PKINIT feature in master's KDC entry in LDAP
|
|
"""
|
|
service.set_service_entry_config(
|
|
'KDC', self.fqdn, [PKINIT_ENABLED], self.suffix)
|
|
|
|
def pkinit_disable(self):
|
|
"""
|
|
unadvertise enabled PKINIT feature in master's KDC entry in LDAP
|
|
"""
|
|
ldap = api.Backend.ldap2
|
|
dn = DN(('cn', 'KDC'),
|
|
('cn', self.fqdn),
|
|
('cn', 'masters'),
|
|
('cn', 'ipa'),
|
|
('cn', 'etc'),
|
|
self.suffix)
|
|
|
|
entry = ldap.get_entry(dn, ['ipaConfigString'])
|
|
|
|
config = entry.setdefault('ipaConfigString', [])
|
|
config = [value for value in config
|
|
if value.lower() != PKINIT_ENABLED.lower()]
|
|
entry['ipaConfigString'][:] = config
|
|
|
|
try:
|
|
ldap.update_entry(entry)
|
|
except errors.EmptyModlist:
|
|
pass
|
|
|
|
def _install_pkinit_ca_bundle(self):
|
|
ca_certs = certstore.get_ca_certs(self.api.Backend.ldap2,
|
|
self.api.env.basedn,
|
|
self.api.env.realm,
|
|
False)
|
|
ca_certs = [c for c, _n, t, _u in ca_certs if t is not False]
|
|
x509.write_certificate_list(ca_certs, paths.CACERT_PEM, mode=0o644)
|
|
|
|
def issue_selfsigned_pkinit_certs(self):
|
|
self._call_certmonger(certmonger_ca="SelfSign")
|
|
with open(paths.CACERT_PEM, 'w'):
|
|
pass
|
|
|
|
def issue_ipa_ca_signed_pkinit_certs(self):
|
|
try:
|
|
self._call_certmonger()
|
|
self._install_pkinit_ca_bundle()
|
|
self.pkinit_enable()
|
|
except RuntimeError as e:
|
|
logger.warning("PKINIT certificate request failed: %s", e)
|
|
logger.warning("Failed to configure PKINIT")
|
|
|
|
self.print_msg("Full PKINIT configuration did not succeed")
|
|
self.print_msg(
|
|
"The setup will only install bits "
|
|
"essential to the server functionality")
|
|
self.print_msg(
|
|
"You can enable PKINIT after the "
|
|
"setup completed using 'ipa-pkinit-manage'")
|
|
|
|
self.stop_tracking_certs()
|
|
self.issue_selfsigned_pkinit_certs()
|
|
|
|
def install_external_pkinit_certs(self):
|
|
certs.install_pem_from_p12(self.pkcs12_info[0],
|
|
self.pkcs12_info[1],
|
|
paths.KDC_CERT)
|
|
certs.install_key_from_p12(self.pkcs12_info[0],
|
|
self.pkcs12_info[1],
|
|
paths.KDC_KEY)
|
|
self._install_pkinit_ca_bundle()
|
|
self.pkinit_enable()
|
|
|
|
def setup_pkinit(self):
|
|
if self.pkcs12_info:
|
|
self.install_external_pkinit_certs()
|
|
elif self.config_pkinit:
|
|
self.issue_ipa_ca_signed_pkinit_certs()
|
|
|
|
def enable_ssl(self):
|
|
"""
|
|
generate PKINIT certificate for KDC. If `--no-pkinit` was specified,
|
|
only configure local self-signed KDC certificate for use as a FAST
|
|
channel generator for WebUI. Do not advertise the installation steps in
|
|
this case.
|
|
"""
|
|
if self.master_fqdn is not None:
|
|
self._wait_for_replica_kdc_entry()
|
|
|
|
if self.config_pkinit:
|
|
self.steps = []
|
|
self.step("installing X509 Certificate for PKINIT",
|
|
self.setup_pkinit)
|
|
self.start_creation()
|
|
else:
|
|
self.issue_selfsigned_pkinit_certs()
|
|
|
|
try:
|
|
self.restart()
|
|
except Exception:
|
|
logger.critical("krb5kdc service failed to restart")
|
|
raise
|
|
|
|
def get_anonymous_principal_name(self):
|
|
return "%s@%s" % (ANON_USER, self.realm)
|
|
|
|
def add_anonymous_principal(self):
|
|
# Create the special anonymous principal
|
|
princ_realm = self.get_anonymous_principal_name()
|
|
dn = DN(('krbprincipalname', princ_realm), self.get_realm_suffix())
|
|
try:
|
|
self.api.Backend.ldap2.get_entry(dn)
|
|
except errors.NotFound:
|
|
installutils.kadmin_addprinc(princ_realm)
|
|
self._ldap_mod("anon-princ-aci.ldif", self.sub_dict)
|
|
|
|
try:
|
|
self.api.Backend.ldap2.set_entry_active(dn, True)
|
|
except errors.AlreadyActive:
|
|
pass
|
|
|
|
def __convert_to_gssapi_replication(self):
|
|
repl = replication.ReplicationManager(self.realm,
|
|
self.fqdn,
|
|
self.dm_password)
|
|
repl.convert_to_gssapi_replication(self.master_fqdn,
|
|
r_binddn=DN(('cn', 'Directory Manager')),
|
|
r_bindpw=self.dm_password)
|
|
|
|
def stop_tracking_certs(self):
|
|
certmonger.stop_tracking(certfile=paths.KDC_CERT)
|
|
|
|
def uninstall(self):
|
|
if self.is_configured():
|
|
self.print_msg("Unconfiguring %s" % self.service_name)
|
|
|
|
running = self.restore_state("running")
|
|
enabled = self.restore_state("enabled")
|
|
|
|
try:
|
|
self.stop()
|
|
except Exception:
|
|
pass
|
|
|
|
for f in [paths.KRB5KDC_KDC_CONF, paths.KRB5_CONF]:
|
|
try:
|
|
self.fstore.restore_file(f)
|
|
except ValueError as error:
|
|
logger.debug("%s", error)
|
|
|
|
# disabled by default, by ldap_configure()
|
|
if enabled:
|
|
self.enable()
|
|
|
|
# stop tracking and remove certificates
|
|
self.stop_tracking_certs()
|
|
installutils.remove_file(paths.CACERT_PEM)
|
|
installutils.remove_file(paths.KDC_CERT)
|
|
installutils.remove_file(paths.KDC_KEY)
|
|
|
|
if running:
|
|
self.restart()
|
|
|
|
self.kpasswd = KpasswdInstance()
|
|
self.kpasswd.uninstall()
|