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https://salsa.debian.org/freeipa-team/freeipa.git
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cd83afcd4b
Mistake in recent fixes made the ipa-replica-prepare include some extra files in the info file should the legacy format of NSS databases be used. https://pagure.io/freeipa/issue/7049 Reviewed-By: Christian Heimes <cheimes@redhat.com>
643 lines
26 KiB
Python
643 lines
26 KiB
Python
# Authors: Karl MacMillan <kmacmillan@mentalrootkit.com>
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# Petr Viktorin <pviktori@redhat.com>
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#
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# Copyright (C) 2008-2012 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 shutil
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import tempfile
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import time
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# pylint: disable=deprecated-module
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from optparse import OptionGroup, SUPPRESS_HELP
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# pylint: enable=deprecated-module
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import dns.resolver
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import six
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from ipaserver.install import certs, installutils, bindinstance, dsinstance, ca
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from ipaserver.install.replication import enable_replication_version_checking
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from ipaserver.install.server.replicainstall import install_ca_cert
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from ipaserver.install.bindinstance import (
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add_zone, add_fwd_rr, add_ptr_rr, dns_container_exists)
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from ipapython import ipautil, admintool, certdb
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from ipapython.dn import DN
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from ipapython import version
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from ipalib import api
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from ipalib import errors
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from ipaplatform.paths import paths
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from ipalib.constants import DOMAIN_LEVEL_0
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# pylint: disable=import-error
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if six.PY3:
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# The SafeConfigParser class has been renamed to ConfigParser in Py3
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from configparser import ConfigParser as SafeConfigParser
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else:
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from ConfigParser import SafeConfigParser
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# pylint: enable=import-error
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logger = logging.getLogger(__name__)
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UNSUPPORTED_DOMAIN_LEVEL_TEMPLATE = """
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Replica creation using '{command_name}' to generate replica file
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is supported only in {domain_level}-level IPA domain.
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The current IPA domain level is {curr_domain_level} and thus the replica must
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be created by promoting an existing IPA client.
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To set up a replica use the following procedure:
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1.) set up a client on the host using 'ipa-client-install'
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2.) promote the client to replica running 'ipa-replica-install'
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*without* replica file specified
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"""
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class ReplicaPrepare(admintool.AdminTool):
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command_name = 'ipa-replica-prepare'
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usage = "%prog [options] <replica-fqdn>"
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description = "Prepare a file for replica installation."
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@classmethod
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def add_options(cls, parser):
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super(ReplicaPrepare, cls).add_options(parser, debug_option=True)
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parser.add_option("-p", "--password", dest="password",
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help="Directory Manager password (for the existing master)")
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parser.add_option("--ip-address", dest="ip_addresses", type="ip",
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action="append", default=[], metavar="IP_ADDRESS",
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help="add A and PTR records of the future replica. This option can be used multiple times")
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parser.add_option("--reverse-zone", dest="reverse_zones",
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action="append", default=[], metavar="REVERSE_ZONE",
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help="the reverse DNS zone to use. This option can be used multiple times")
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parser.add_option("--no-reverse", dest="no_reverse",
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action="store_true", default=False,
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help="do not create reverse DNS zone")
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parser.add_option("--auto-reverse", dest="auto_reverse", default=False,
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action="store_true", help="create necessary DNS zones")
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parser.add_option("--allow-zone-overlap", dest="allow_zone_overlap",
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action="store_true", default=False, help="create DNS "
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"zone even if it already exists")
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parser.add_option("--ca", dest="ca_file", default=paths.CACERT_P12,
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metavar="FILE",
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help="location of CA PKCS#12 file, default /root/cacert.p12")
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parser.add_option('--no-wait-for-dns', dest='wait_for_dns',
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action='store_false', default=True,
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help="do not wait until the replica is resolvable in DNS")
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group = OptionGroup(parser, "SSL certificate options",
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"Only used if the server was installed using custom SSL certificates")
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group.add_option("--dirsrv-cert-file", dest="dirsrv_cert_files",
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action="append", metavar="FILE",
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help="File containing the Directory Server SSL certificate and private key")
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group.add_option("--dirsrv_pkcs12", dest="dirsrv_cert_files",
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action="append",
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help=SUPPRESS_HELP)
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group.add_option("--http-cert-file", dest="http_cert_files",
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action="append", metavar="FILE",
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help="File containing the Apache Server SSL certificate and private key")
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group.add_option("--http_pkcs12", dest="http_cert_files",
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action="append",
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help=SUPPRESS_HELP)
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group.add_option("--dirsrv-pin", dest="dirsrv_pin", sensitive=True,
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metavar="PIN",
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help="The password to unlock the Directory Server private key")
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group.add_option("--dirsrv_pin", dest="dirsrv_pin", sensitive=True,
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help=SUPPRESS_HELP)
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group.add_option("--http-pin", dest="http_pin", sensitive=True,
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metavar="PIN",
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help="The password to unlock the Apache Server private key")
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group.add_option("--http_pin", dest="http_pin", sensitive=True,
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help=SUPPRESS_HELP)
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group.add_option("--dirsrv-cert-name", dest="dirsrv_cert_name",
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metavar="NAME",
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help="Name of the Directory Server SSL certificate to install")
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group.add_option("--http-cert-name", dest="http_cert_name",
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metavar="NAME",
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help="Name of the Apache Server SSL certificate to install")
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parser.add_option_group(group)
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def validate_options(self):
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options = self.options
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super(ReplicaPrepare, self).validate_options(needs_root=True)
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installutils.check_server_configuration()
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if not options.ip_addresses:
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if options.reverse_zones:
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self.option_parser.error("You cannot specify a --reverse-zone "
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"option without the --ip-address option")
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if options.no_reverse:
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self.option_parser.error("You cannot specify a --no-reverse "
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"option without the --ip-address option")
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elif options.reverse_zones and options.no_reverse:
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self.option_parser.error("You cannot specify a --reverse-zone "
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"option together with --no-reverse")
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# If any of the PKCS#12 options are selected, all are required.
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cert_file_req = (options.dirsrv_cert_files, options.http_cert_files)
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if any(cert_file_req) and not all(cert_file_req):
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self.option_parser.error(
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"--dirsrv-cert-file and --http-cert-file are required if any "
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"key file options are used."
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)
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if len(self.args) < 1:
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self.option_parser.error(
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"must provide the fully-qualified name of the replica")
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elif len(self.args) > 1:
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self.option_parser.error(
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"must provide exactly one name for the replica")
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else:
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[self.replica_fqdn] = self.args
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api.bootstrap(in_server=True, confdir=paths.ETC_IPA)
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api.finalize()
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# Connect to LDAP, connection is closed at the end of run()
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api.Backend.ldap2.connect()
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self.check_for_supported_domain_level()
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if api.env.host == self.replica_fqdn:
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raise admintool.ScriptError("You can't create a replica on itself")
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config_dir = dsinstance.config_dirname(
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installutils.realm_to_serverid(api.env.realm))
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if not os.path.isdir(config_dir):
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raise admintool.ScriptError(
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"could not find directory instance: %s" % config_dir)
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def load_pkcs12(self, cert_files, key_password, key_nickname):
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return installutils.load_pkcs12(
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cert_files=cert_files,
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key_password=key_password,
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key_nickname=key_nickname,
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ca_cert_files=[paths.IPA_CA_CRT],
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host_name=self.replica_fqdn)
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def ask_for_options(self):
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options = self.options
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super(ReplicaPrepare, self).ask_for_options()
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http_ca_cert = None
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dirsrv_ca_cert = None
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# get the directory manager password
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self.dirman_password = options.password
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if not options.password:
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self.dirman_password = installutils.read_password(
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"Directory Manager (existing master)",
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confirm=False, validate=False)
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if self.dirman_password is None:
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raise admintool.ScriptError(
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"Directory Manager password required")
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# Try out the password & get the subject base
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api.Backend.ldap2.disconnect()
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try:
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api.Backend.ldap2.connect(bind_pw=self.dirman_password)
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entry_attrs = api.Backend.ldap2.get_ipa_config()
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self.subject_base = entry_attrs.get(
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'ipacertificatesubjectbase', [None])[0]
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ca_enabled = api.Command.ca_is_enabled()['result']
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except errors.ACIError:
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raise admintool.ScriptError("The password provided is incorrect "
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"for LDAP server %s" % api.env.host)
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except errors.LDAPError:
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raise admintool.ScriptError(
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"Unable to connect to LDAP server %s" % api.env.host)
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except errors.DatabaseError as e:
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raise admintool.ScriptError(e.desc)
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if ca_enabled and not os.path.isfile(paths.CA_CS_CFG_PATH):
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raise admintool.ScriptError(
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"CA is not installed on this server. "
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"ipa-replica-prepare must be run on an IPA server with CA.")
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if not ca_enabled and not options.http_cert_files:
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raise admintool.ScriptError(
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"Cannot issue certificates: a CA is not installed. Use the "
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"--http-cert-file, --dirsrv-cert-file options to provide "
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"custom certificates.")
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if self.subject_base is not None:
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self.subject_base = DN(self.subject_base)
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# Validate more options using the password
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try:
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installutils.verify_fqdn(self.replica_fqdn, local_hostname=False)
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except installutils.BadHostError as e:
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if isinstance(e, installutils.HostLookupError):
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if not options.ip_addresses:
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if dns_container_exists(api.env.basedn):
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logger.info('You might use the --ip-address option '
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'to create a DNS entry if the DNS zone '
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'is managed by IPA.')
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raise
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else:
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# The host doesn't exist in DNS but we're adding it.
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pass
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else:
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raise
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if options.ip_addresses:
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if not dns_container_exists(api.env.basedn):
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logger.error(
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"It is not possible to add a DNS record automatically "
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"because DNS is not managed by IPA. Please create DNS "
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"record manually and then omit --ip-address option.")
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raise admintool.ScriptError("Cannot add DNS record")
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options.reverse_zones = bindinstance.check_reverse_zones(
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options.ip_addresses, options.reverse_zones, options, False,
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True)
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_host, zone = self.replica_fqdn.split('.', 1)
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if not bindinstance.dns_zone_exists(zone, api=api):
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logger.error("DNS zone %s does not exist in IPA managed DNS "
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"server. Either create DNS zone or omit "
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"--ip-address option.", zone)
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raise admintool.ScriptError("Cannot add DNS record")
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self.http_pin = self.dirsrv_pin = None
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if options.http_cert_files:
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if options.http_pin is None:
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options.http_pin = installutils.read_password(
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"Enter Apache Server private key unlock",
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confirm=False, validate=False, retry=False)
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if options.http_pin is None:
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raise admintool.ScriptError(
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"Apache Server private key unlock password required")
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http_pkcs12_file, http_pin, http_ca_cert = self.load_pkcs12(
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options.http_cert_files, options.http_pin,
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options.http_cert_name)
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self.http_pkcs12_file = http_pkcs12_file
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self.http_pin = http_pin
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if options.dirsrv_cert_files:
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if options.dirsrv_pin is None:
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options.dirsrv_pin = installutils.read_password(
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"Enter Directory Server private key unlock",
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confirm=False, validate=False, retry=False)
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if options.dirsrv_pin is None:
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raise admintool.ScriptError(
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"Directory Server private key unlock password required")
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dirsrv_pkcs12_file, dirsrv_pin, dirsrv_ca_cert = self.load_pkcs12(
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options.dirsrv_cert_files, options.dirsrv_pin,
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options.dirsrv_cert_name)
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self.dirsrv_pkcs12_file = dirsrv_pkcs12_file
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self.dirsrv_pin = dirsrv_pin
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if (options.http_cert_files and options.dirsrv_cert_files and
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http_ca_cert != dirsrv_ca_cert):
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raise admintool.ScriptError(
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"Apache Server SSL certificate and Directory Server SSL "
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"certificate are not signed by the same CA certificate")
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def run(self):
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options = self.options
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super(ReplicaPrepare, self).run()
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logger.info("Preparing replica for %s from %s",
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self.replica_fqdn, api.env.host)
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enable_replication_version_checking(
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api.env.realm,
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self.dirman_password)
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self.top_dir = tempfile.mkdtemp("ipa")
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self.dir = os.path.join(self.top_dir, "realm_info")
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os.mkdir(self.dir)
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os.chmod(self.dir, 0o700)
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try:
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self.copy_ds_certificate()
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self.copy_httpd_certificate()
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self.retrieve_ca_certs()
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self.copy_misc_files()
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self.save_config()
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self.package_replica_file()
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finally:
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shutil.rmtree(self.top_dir)
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if options.ip_addresses:
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self.add_dns_records()
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if options.wait_for_dns:
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self.wait_for_dns()
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# Close LDAP connection that was opened in validate_options()
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api.Backend.ldap2.disconnect()
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def copy_ds_certificate(self):
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options = self.options
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passwd_fname = os.path.join(self.dir, "dirsrv_pin.txt")
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with open(passwd_fname, "w") as fd:
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fd.write("%s\n" % (self.dirsrv_pin or ''))
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if options.dirsrv_cert_files:
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logger.info("Copying SSL certificate for the Directory Server")
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self.copy_info_file(self.dirsrv_pkcs12_file.name, "dscert.p12")
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else:
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if os.path.isfile(options.ca_file):
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# Since it is possible that the Directory Manager password
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# has changed since ipa-server-install, we need to regenerate
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# the CA PKCS#12 file and update the pki admin user password
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self.regenerate_ca_file(options.ca_file)
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self.update_pki_admin_password()
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self.copy_info_file(options.ca_file, "cacert.p12")
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else:
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raise admintool.ScriptError("Root CA PKCS#12 not "
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"found in %s" % options.ca_file)
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logger.info(
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"Creating SSL certificate for the Directory Server")
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self.export_certdb("dscert", passwd_fname)
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if not options.dirsrv_cert_files:
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logger.info(
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"Creating SSL certificate for the dogtag Directory Server")
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self.export_certdb("dogtagcert", passwd_fname)
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logger.info("Saving dogtag Directory Server port")
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port_fname = os.path.join(
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self.dir, "dogtag_directory_port.txt")
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with open(port_fname, "w") as fd:
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fd.write("389\n")
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def copy_httpd_certificate(self):
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options = self.options
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passwd_fname = os.path.join(self.dir, "http_pin.txt")
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with open(passwd_fname, "w") as fd:
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fd.write("%s\n" % (self.http_pin or ''))
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if options.http_cert_files:
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logger.info("Copying SSL certificate for the Web Server")
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self.copy_info_file(self.http_pkcs12_file.name, "httpcert.p12")
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else:
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logger.info("Creating SSL certificate for the Web Server")
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self.export_certdb("httpcert", passwd_fname)
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logger.info("Exporting RA certificate")
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self.export_ra_pkcs12()
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def copy_misc_files(self):
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logger.info("Copying additional files")
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cacert_filename = paths.CACERT_PEM
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if os.path.isfile(cacert_filename):
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self.copy_info_file(cacert_filename, "cacert.pem")
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self.copy_info_file(paths.IPA_DEFAULT_CONF, "default.conf")
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def retrieve_ca_certs(self):
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logger.info("Retrieving CA certificates")
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dest = os.path.join(self.dir, "ca.crt")
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install_ca_cert(api.Backend.ldap2, api.env.basedn,
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api.env.realm, paths.IPA_CA_CRT, destfile=dest)
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def save_config(self):
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logger.info("Finalizing configuration")
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config = SafeConfigParser()
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config.add_section("realm")
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config.set("realm", "realm_name", api.env.realm)
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config.set("realm", "master_host_name", api.env.host)
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config.set("realm", "domain_name", api.env.domain)
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config.set("realm", "destination_host", self.replica_fqdn)
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config.set("realm", "subject_base", str(self.subject_base))
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config.set("realm", "version", str(version.NUM_VERSION))
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with open(os.path.join(self.dir, "realm_info"), "w") as fd:
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config.write(fd)
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def package_replica_file(self):
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replicafile = paths.REPLICA_INFO_TEMPLATE % self.replica_fqdn
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encfile = "%s.gpg" % replicafile
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logger.info("Packaging replica information into %s", encfile)
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ipautil.run(
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[paths.TAR, "cf", replicafile, "-C", self.top_dir, "realm_info"])
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installutils.encrypt_file(
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replicafile, encfile, self.dirman_password, self.top_dir)
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os.chmod(encfile, 0o600)
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installutils.remove_file(replicafile)
|
|
|
|
def add_dns_records(self):
|
|
options = self.options
|
|
|
|
logger.info("Adding DNS records for %s", self.replica_fqdn)
|
|
name, domain = self.replica_fqdn.split(".", 1)
|
|
|
|
for reverse_zone in options.reverse_zones:
|
|
logger.info("Adding reverse zone %s", reverse_zone)
|
|
add_zone(reverse_zone)
|
|
|
|
for ip in options.ip_addresses:
|
|
ip_address = str(ip)
|
|
try:
|
|
add_fwd_rr(domain, name, ip_address)
|
|
except errors.PublicError as e:
|
|
raise admintool.ScriptError(
|
|
"Could not add A/AAAA DNS record for the replica: %s" % e)
|
|
|
|
if not options.no_reverse:
|
|
reverse_zone = bindinstance.find_reverse_zone(ip)
|
|
if reverse_zone is None:
|
|
logger.warning(
|
|
"Could not find any IPA managed reverse zone. "
|
|
"Not creating PTR records")
|
|
return
|
|
try:
|
|
add_ptr_rr(reverse_zone, ip_address, self.replica_fqdn)
|
|
except errors.PublicError as e:
|
|
raise admintool.ScriptError(
|
|
"Could not add PTR DNS record for the replica: %s"
|
|
% e)
|
|
|
|
def check_dns(self, replica_fqdn):
|
|
"""Return true if the replica hostname is resolvable"""
|
|
resolver = dns.resolver.Resolver()
|
|
exceptions = (dns.resolver.NXDOMAIN, dns.resolver.NoAnswer,
|
|
dns.resolver.Timeout, dns.resolver.NoNameservers)
|
|
|
|
try:
|
|
resolver.query(replica_fqdn, 'A', 'IN')
|
|
except exceptions:
|
|
try:
|
|
resolver.query(replica_fqdn, 'AAAA', 'IN')
|
|
except exceptions:
|
|
return False
|
|
except Exception as e:
|
|
logger.warning('Exception while waiting for DNS record: %s: %s',
|
|
type(e).__name__, e)
|
|
|
|
return True
|
|
|
|
def wait_for_dns(self):
|
|
# Make sure replica_fqdn has a trailing dot, so the
|
|
# 'search' directive in /etc/resolv.conf doesn't apply
|
|
replica_fqdn = self.replica_fqdn
|
|
if not replica_fqdn.endswith('.'):
|
|
replica_fqdn += '.'
|
|
|
|
if self.check_dns(replica_fqdn):
|
|
logger.debug('%s A/AAAA record resolvable', replica_fqdn)
|
|
return
|
|
|
|
logger.info('Waiting for %s A or AAAA record to be resolvable',
|
|
replica_fqdn)
|
|
print('This can be safely interrupted (Ctrl+C)')
|
|
|
|
try:
|
|
while not self.check_dns(replica_fqdn):
|
|
time.sleep(1)
|
|
except KeyboardInterrupt:
|
|
logger.info('Interrupted')
|
|
else:
|
|
logger.debug('%s A/AAAA record resolvable', replica_fqdn)
|
|
|
|
def copy_info_file(self, source, dest):
|
|
"""Copy a file into the info directory
|
|
|
|
:param source: The source file (an absolute path)
|
|
:param dest: The destination file (relative to the info directory)
|
|
"""
|
|
dest_path = os.path.join(self.dir, dest)
|
|
logger.debug('Copying %s to %s', source, dest_path)
|
|
try:
|
|
shutil.copy(source, dest_path)
|
|
except IOError as e:
|
|
raise admintool.ScriptError("File copy failed: %s" % e)
|
|
|
|
def remove_info_file(self, filename):
|
|
"""Remove a file from the info directory
|
|
|
|
:param filename: The unneeded file (relative to the info directory)
|
|
"""
|
|
installutils.remove_file(os.path.join(self.dir, filename))
|
|
|
|
def export_certdb(self, fname, passwd_fname):
|
|
"""Export a cert database
|
|
|
|
:param fname: The file to export to (relative to the info directory)
|
|
:param passwd_fname: File that holds the cert DB password
|
|
"""
|
|
hostname = self.replica_fqdn
|
|
subject_base = self.subject_base
|
|
ca_subject = ca.lookup_ca_subject(api, subject_base)
|
|
nickname = "Server-Cert"
|
|
|
|
try:
|
|
db = certs.CertDB(
|
|
api.env.realm, nssdir=self.dir, host_name=api.env.host,
|
|
subject_base=subject_base, ca_subject=ca_subject)
|
|
db.create_passwd_file()
|
|
db.create_from_cacert()
|
|
db.create_server_cert(nickname, hostname)
|
|
|
|
pkcs12_fname = os.path.join(self.dir, fname + ".p12")
|
|
|
|
try:
|
|
db.export_pkcs12(pkcs12_fname, passwd_fname, nickname)
|
|
except ipautil.CalledProcessError as e:
|
|
logger.info("error exporting Server certificate: %s", e)
|
|
installutils.remove_file(pkcs12_fname)
|
|
installutils.remove_file(passwd_fname)
|
|
|
|
for fname in (certdb.NSS_DBM_FILES + certdb.NSS_SQL_FILES):
|
|
self.remove_info_file(fname)
|
|
self.remove_info_file("noise.txt")
|
|
|
|
orig_filename = passwd_fname + ".orig"
|
|
if os.path.isfile(orig_filename):
|
|
installutils.remove_file(orig_filename)
|
|
except errors.CertificateOperationError as e:
|
|
raise admintool.ScriptError(str(e))
|
|
|
|
def export_ra_pkcs12(self):
|
|
if (os.path.exists(paths.RA_AGENT_PEM) and
|
|
os.path.exists(paths.RA_AGENT_KEY)):
|
|
with ipautil.write_tmp_file(self.dirman_password) as f:
|
|
ipautil.run([
|
|
paths.OPENSSL,
|
|
"pkcs12", "-export",
|
|
"-inkey", paths.RA_AGENT_KEY,
|
|
"-in", paths.RA_AGENT_PEM,
|
|
"-out", os.path.join(self.dir, "ra.p12"),
|
|
"-passout", "file:{pwfile}".format(pwfile=f.name)
|
|
])
|
|
|
|
def update_pki_admin_password(self):
|
|
dn = DN('uid=admin', 'ou=people', 'o=ipaca')
|
|
api.Backend.ldap2.modify_password(dn, self.dirman_password)
|
|
|
|
def regenerate_ca_file(self, ca_file):
|
|
dm_pwd_fd = ipautil.write_tmp_file(self.dirman_password)
|
|
|
|
keydb_pwd = ''
|
|
with open(paths.PKI_TOMCAT_PASSWORD_CONF) as f:
|
|
for line in f.readlines():
|
|
key, value = line.strip().split('=')
|
|
if key == 'internal':
|
|
keydb_pwd = value
|
|
break
|
|
|
|
keydb_pwd_fd = ipautil.write_tmp_file(keydb_pwd)
|
|
|
|
ipautil.run([
|
|
paths.PKCS12EXPORT,
|
|
'-d', paths.PKI_TOMCAT_ALIAS_DIR,
|
|
'-p', keydb_pwd_fd.name,
|
|
'-w', dm_pwd_fd.name,
|
|
'-o', ca_file
|
|
])
|
|
|
|
def check_for_supported_domain_level(self):
|
|
"""
|
|
check if we are in 0-level topology. If not, raise an error pointing
|
|
the user to the replica promotion pathway
|
|
"""
|
|
|
|
domain_level = dsinstance.get_domain_level(api)
|
|
if domain_level > DOMAIN_LEVEL_0:
|
|
logger.error(
|
|
'%s',
|
|
UNSUPPORTED_DOMAIN_LEVEL_TEMPLATE.format(
|
|
command_name=self.command_name,
|
|
domain_level=DOMAIN_LEVEL_0,
|
|
curr_domain_level=domain_level
|
|
)
|
|
)
|
|
raise errors.InvalidDomainLevelError(
|
|
reason="'{command}' is allowed only in domain level "
|
|
"{prep_domain_level}".format(
|
|
command=self.command_name,
|
|
prep_domain_level=DOMAIN_LEVEL_0
|
|
)
|
|
)
|