mirror of
https://salsa.debian.org/freeipa-team/freeipa.git
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a45a7a20d9
Cryptography 42.0.0 introduced two new abstract properties `not_valid_before_utc` and `not_valid_after_utc`, which are non-naive UTC variants of the `not_valid_before` and `not_valid_after` properties. The old properties are deprecated. The changeset also modifies code and tests to use the new `_utc` variants. Fixes: https://pagure.io/freeipa/issue/9518 Signed-off-by: Christian Heimes <cheimes@redhat.com> Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
592 lines
23 KiB
Python
592 lines
23 KiB
Python
# Authors: Jan Cholasta <jcholast@redhat.com>
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#
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# Copyright (C) 2014 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 print_function, absolute_import
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import datetime
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import logging
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import os
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from optparse import OptionGroup # pylint: disable=deprecated-module
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import gssapi
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from ipalib.constants import (
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RENEWAL_CA_NAME, RENEWAL_REUSE_CA_NAME, RENEWAL_SELFSIGNED_CA_NAME,
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IPA_CA_CN)
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from ipalib.install import certmonger, certstore
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from ipapython import admintool, ipautil
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from ipapython.certdb import (EMPTY_TRUST_FLAGS,
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EXTERNAL_CA_TRUST_FLAGS,
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TrustFlags,
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parse_trust_flags,
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get_ca_nickname)
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from ipapython.dn import DN
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from ipaplatform.paths import paths
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from ipalib import api, errors, x509
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from ipaserver.install import certs, cainstance, installutils
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logger = logging.getLogger(__name__)
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class CACertManage(admintool.AdminTool):
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command_name = 'ipa-cacert-manage'
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usage = "%prog renew [options]\n%prog install [options] CERTFILE\n" \
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"%prog delete [options] NICKNAME\n%prog list\n%prog prune"
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description = "Manage CA certificates."
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cert_nickname = 'caSigningCert cert-pki-ca'
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@classmethod
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def add_options(cls, parser):
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super(CACertManage, cls).add_options(parser)
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parser.add_option(
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"-p", "--password", dest='password',
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help="Directory Manager password")
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renew_group = OptionGroup(parser, "Renew options")
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renew_group.add_option(
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"--self-signed", dest='self_signed',
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action='store_true',
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help="Sign the renewed certificate by itself")
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renew_group.add_option(
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"--external-ca", dest='self_signed',
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action='store_false',
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help="Sign the renewed certificate by external CA")
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ext_cas = tuple(x.value for x in x509.ExternalCAType)
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renew_group.add_option(
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"--external-ca-type", dest="external_ca_type",
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type="choice", choices=ext_cas,
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metavar="{{{0}}}".format(",".join(ext_cas)),
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help="Type of the external CA. Default: generic")
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renew_group.add_option(
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"--external-ca-profile", dest="external_ca_profile",
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type='constructor', constructor=x509.ExternalCAProfile,
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default=None, metavar="PROFILE-SPEC",
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help="Specify the certificate profile/template to use "
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"at the external CA")
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renew_group.add_option(
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"--external-cert-file", dest="external_cert_files",
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action="append", metavar="FILE",
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help="File containing the IPA CA certificate and the external CA "
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"certificate chain")
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parser.add_option_group(renew_group)
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install_group = OptionGroup(parser, "Install options")
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install_group.add_option(
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"-n", "--nickname", dest='nickname',
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help="Nickname for the certificate")
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install_group.add_option(
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"-t", "--trust-flags", dest='trust_flags', default='C,,',
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help="Trust flags for the certificate in certutil format")
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parser.add_option_group(install_group)
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delete_group = OptionGroup(parser, "Delete options")
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delete_group.add_option(
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"-f", "--force", action='store_true',
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help="Force removing the CA even if chain validation fails")
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parser.add_option_group(delete_group)
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def validate_options(self):
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super(CACertManage, self).validate_options(needs_root=True)
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installutils.check_server_configuration()
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parser = self.option_parser
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if not self.args:
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parser.error("command not provided")
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command = self.command = self.args[0]
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if command not in ('renew', 'list', 'install', 'delete', 'prune'):
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parser.error("unknown command \"%s\"" % command)
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elif command == 'install':
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if len(self.args) < 2:
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parser.error("certificate file name not provided")
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elif command == 'delete':
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if len(self.args) < 2:
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parser.error("nickname not provided")
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def run(self):
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command = self.command
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api.bootstrap(in_server=True, confdir=paths.ETC_IPA)
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api.finalize()
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self.ldap_connect()
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try:
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if command == 'renew':
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return self.renew()
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elif command == 'install':
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return self.install()
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elif command == 'list':
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return self.list()
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elif command == 'delete':
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return self.delete()
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elif command == 'prune':
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return self.prune()
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else:
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raise NotImplementedError
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finally:
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api.Backend.ldap2.disconnect()
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def ldap_connect(self):
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password = self.options.password
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if not password:
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try:
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api.Backend.ldap2.connect(ccache=os.environ.get('KRB5CCNAME'))
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except (gssapi.exceptions.GSSError, errors.ACIError):
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pass
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else:
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return
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password = installutils.read_password(
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"Directory Manager", confirm=False, validate=False)
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if password is None:
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raise admintool.ScriptError(
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"Directory Manager password required")
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api.Backend.ldap2.connect(bind_pw=password)
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def _get_ca_request_id(self, ca_name):
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"""Lookup tracking request for IPA CA, using given ca-name."""
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criteria = {
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'cert-database': paths.PKI_TOMCAT_ALIAS_DIR,
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'cert-nickname': self.cert_nickname,
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'ca-name': ca_name,
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}
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return certmonger.get_request_id(criteria)
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def renew(self):
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ca = cainstance.CAInstance(api.env.realm)
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if not ca.is_configured():
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raise admintool.ScriptError("CA is not configured on this system")
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self.request_id = self._get_ca_request_id(RENEWAL_CA_NAME)
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if self.request_id is None:
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# if external CA renewal was interrupted, the request may have
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# been left with the "dogtag-ipa-ca-renew-agent-reuse" CA;
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# look for it too
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self.request_id = self._get_ca_request_id(RENEWAL_REUSE_CA_NAME)
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if self.request_id is None:
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raise admintool.ScriptError(
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"CA certificate is not tracked by certmonger")
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logger.debug(
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"Found certmonger request id %r", self.request_id)
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db = certs.CertDB(api.env.realm, nssdir=paths.PKI_TOMCAT_ALIAS_DIR)
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cert = db.get_cert_from_db(self.cert_nickname)
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options = self.options
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if options.external_cert_files:
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return self.renew_external_step_2(ca, cert)
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if options.self_signed is not None:
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self_signed = options.self_signed
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else:
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self_signed = cert.is_self_signed()
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if self_signed:
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return self.renew_self_signed(ca)
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else:
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return self.renew_external_step_1(ca)
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def renew_self_signed(self, ca):
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print("Renewing CA certificate, please wait")
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msg = "You cannot specify {} when renewing a self-signed CA"
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if self.options.external_ca_type:
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raise admintool.ScriptError(msg.format("--external-ca-type"))
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if self.options.external_ca_profile:
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raise admintool.ScriptError(msg.format("--external-ca-profile"))
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try:
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ca.set_renewal_master()
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except errors.NotFound:
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raise admintool.ScriptError("CA renewal master not found")
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self.resubmit_request(RENEWAL_SELFSIGNED_CA_NAME)
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db = certs.CertDB(api.env.realm, nssdir=paths.PKI_TOMCAT_ALIAS_DIR)
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cert = db.get_cert_from_db(self.cert_nickname)
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update_ipa_ca_entry(api, cert)
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print("CA certificate successfully renewed")
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def renew_external_step_1(self, ca):
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print("Exporting CA certificate signing request, please wait")
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options = self.options
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if not options.external_ca_type:
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options.external_ca_type = x509.ExternalCAType.GENERIC.value
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if options.external_ca_type == x509.ExternalCAType.MS_CS.value \
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and options.external_ca_profile is None:
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options.external_ca_profile = x509.MSCSTemplateV1(u"SubCA")
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if options.external_ca_profile is not None:
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# check that profile is valid for the external ca type
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if options.external_ca_type \
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not in options.external_ca_profile.valid_for:
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raise admintool.ScriptError(
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"External CA profile specification '{}' "
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"cannot be used with external CA type '{}'."
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.format(
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options.external_ca_profile.unparsed_input,
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options.external_ca_type)
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)
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self.resubmit_request(
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RENEWAL_REUSE_CA_NAME,
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profile=options.external_ca_profile)
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print(("The next step is to get %s signed by your CA and re-run "
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"ipa-cacert-manage as:" % paths.IPA_CA_CSR))
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print("ipa-cacert-manage renew "
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"--external-cert-file=/path/to/signed_certificate "
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"--external-cert-file=/path/to/external_ca_certificate")
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def renew_external_step_2(self, ca, old_cert):
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print("Importing the renewed CA certificate, please wait")
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options = self.options
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conn = api.Backend.ldap2
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old_spki = old_cert.public_key_info_bytes
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cert_file, ca_file = installutils.load_external_cert(
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options.external_cert_files, DN(old_cert.subject))
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with open(cert_file.name, 'rb') as f:
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new_cert_data = f.read()
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new_cert = x509.load_pem_x509_certificate(new_cert_data)
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new_spki = new_cert.public_key_info_bytes
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if new_cert.subject != old_cert.subject:
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raise admintool.ScriptError(
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"Subject name mismatch (visit "
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"http://www.freeipa.org/page/Troubleshooting for "
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"troubleshooting guide)")
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if new_cert.subject_bytes != old_cert.subject_bytes:
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raise admintool.ScriptError(
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"Subject name encoding mismatch (visit "
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"http://www.freeipa.org/page/Troubleshooting for "
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"troubleshooting guide)")
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if new_spki != old_spki:
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raise admintool.ScriptError(
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"Subject public key info mismatch (visit "
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"http://www.freeipa.org/page/Troubleshooting for "
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"troubleshooting guide)")
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with certs.NSSDatabase() as tmpdb:
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tmpdb.create_db()
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tmpdb.add_cert(old_cert, 'IPA CA', EXTERNAL_CA_TRUST_FLAGS)
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try:
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tmpdb.add_cert(new_cert, 'IPA CA', EXTERNAL_CA_TRUST_FLAGS)
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except ipautil.CalledProcessError as e:
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raise admintool.ScriptError(
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"Not compatible with the current CA certificate: %s" % e)
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ca_certs = x509.load_certificate_list_from_file(ca_file.name)
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for ca_cert in ca_certs:
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tmpdb.add_cert(
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ca_cert, str(DN(ca_cert.subject)), EXTERNAL_CA_TRUST_FLAGS)
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try:
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tmpdb.verify_ca_cert_validity('IPA CA')
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except ValueError as e:
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raise admintool.ScriptError(
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"Not a valid CA certificate: %s (visit "
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"http://www.freeipa.org/page/Troubleshooting for "
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"troubleshooting guide)" % e)
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trust_chain = tmpdb.get_trust_chain('IPA CA')[:-1]
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for nickname in trust_chain:
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try:
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ca_cert = tmpdb.get_cert(nickname)
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except RuntimeError:
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break
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certstore.put_ca_cert_nss(
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conn,
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api.env.basedn,
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ca_cert,
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nickname,
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EMPTY_TRUST_FLAGS)
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dn = DN(('cn', self.cert_nickname), ('cn', 'ca_renewal'),
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('cn', 'ipa'), ('cn', 'etc'), api.env.basedn)
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try:
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entry = conn.get_entry(dn, ['usercertificate'])
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entry['usercertificate'] = [new_cert]
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conn.update_entry(entry)
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except errors.NotFound:
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entry = conn.make_entry(
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dn,
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objectclass=['top', 'pkiuser', 'nscontainer'],
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cn=[self.cert_nickname],
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usercertificate=[new_cert])
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conn.add_entry(entry)
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except errors.EmptyModlist:
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pass
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update_ipa_ca_entry(api, new_cert)
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try:
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ca.set_renewal_master()
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except errors.NotFound:
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raise admintool.ScriptError("CA renewal master not found")
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self.resubmit_request(RENEWAL_REUSE_CA_NAME)
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print("CA certificate successfully renewed")
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def resubmit_request(self, ca=RENEWAL_CA_NAME, profile=None):
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timeout = api.env.startup_timeout + 60
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cm_profile = None
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if isinstance(profile, x509.MSCSTemplateV1):
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cm_profile = profile.unparsed_input
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cm_template = None
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if isinstance(profile, x509.MSCSTemplateV2):
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cm_template = profile.unparsed_input
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logger.debug("resubmitting certmonger request '%s'", self.request_id)
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certmonger.resubmit_request(self.request_id, ca=ca, profile=cm_profile,
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template_v2=cm_template, is_ca=True)
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try:
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state = certmonger.wait_for_request(self.request_id, timeout)
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except RuntimeError:
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raise admintool.ScriptError(
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"Resubmitting certmonger request '%s' timed out, "
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"please check the request manually" % self.request_id)
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ca_error = certmonger.get_request_value(self.request_id, 'ca-error')
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if state != 'MONITORING' or ca_error:
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raise admintool.ScriptError(
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"Error resubmitting certmonger request '%s', "
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"please check the request manually" % self.request_id)
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logger.debug("modifying certmonger request '%s'", self.request_id)
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certmonger.modify(self.request_id,
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ca=RENEWAL_CA_NAME,
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profile='', template_v2='')
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def install(self):
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print("Installing CA certificate, please wait")
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options = self.options
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ca_certs = certstore.get_ca_certs_nss(api.Backend.ldap2,
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api.env.basedn,
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api.env.realm,
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False)
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with certs.NSSDatabase() as tmpdb:
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tmpdb.create_db()
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tmpdb.import_files(self.args[1:])
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imported = tmpdb.list_certs()
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logger.debug("loaded raw certs '%s'", imported)
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if len(imported) > 1 and options.nickname:
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raise admintool.ScriptError(
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"Nickname can only be used if only a single "
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"certificate is loaded")
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# If a nickname was provided re-import the cert
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if options.nickname:
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(nickname, trust_flags) = imported[0]
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cert = tmpdb.get_cert(nickname)
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tmpdb.delete_cert(nickname)
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tmpdb.add_cert(cert, options.nickname, EXTERNAL_CA_TRUST_FLAGS)
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imported = tmpdb.list_certs()
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for ca_cert, ca_nickname, ca_trust_flags in ca_certs:
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tmpdb.add_cert(ca_cert, ca_nickname, ca_trust_flags)
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for nickname, trust_flags in imported:
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if trust_flags.has_key:
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continue
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tmpdb.trust_root_cert(nickname, EXTERNAL_CA_TRUST_FLAGS)
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for nickname, trust_flags in imported:
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try:
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tmpdb.verify_ca_cert_validity(nickname)
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except ValueError as e:
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raise admintool.ScriptError(
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"Not a valid CA certificate: %s (visit "
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"http://www.freeipa.org/page/Troubleshooting for "
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"troubleshooting guide)" % e)
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else:
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print("Verified %s" % nickname)
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trust_flags = options.trust_flags.split(',')
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if (set(options.trust_flags) - set(',CPTcgpuw') or
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len(trust_flags) not in [3, 4]):
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raise admintool.ScriptError("Invalid trust flags")
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extra_flags = trust_flags[3:]
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extra_usages = set()
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if extra_flags:
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if 'C' in extra_flags[0]:
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extra_usages.add(x509.EKU_PKINIT_KDC)
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if 'T' in extra_flags[0]:
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extra_usages.add(x509.EKU_PKINIT_CLIENT_AUTH)
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trust_flags = parse_trust_flags(','.join(trust_flags[:3]))
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trust_flags = TrustFlags(trust_flags.has_key,
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trust_flags.trusted,
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trust_flags.ca,
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trust_flags.usages | extra_usages)
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for nickname, _trust_flags in imported:
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try:
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cert = tmpdb.get_cert(nickname)
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certstore.put_ca_cert_nss(
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api.Backend.ldap2, api.env.basedn, cert, nickname,
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trust_flags)
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except ValueError as e:
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raise admintool.ScriptError(
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"Failed to install the certificate: %s" % e)
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print("CA certificate successfully installed")
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def list(self):
|
|
ca_certs = certstore.get_ca_certs_nss(api.Backend.ldap2,
|
|
api.env.basedn,
|
|
api.env.realm,
|
|
False)
|
|
for _ca_cert, ca_nickname, _ca_trust_flags in ca_certs:
|
|
print(ca_nickname)
|
|
|
|
def _delete_by_nickname(self, nicknames, options):
|
|
conn = api.Backend.ldap2
|
|
|
|
ca_certs = certstore.get_ca_certs_nss(api.Backend.ldap2,
|
|
api.env.basedn,
|
|
api.env.realm,
|
|
False)
|
|
|
|
ipa_ca_nickname = get_ca_nickname(api.env.realm)
|
|
|
|
for nickname in nicknames:
|
|
found = False
|
|
for _ca_cert, ca_nickname, _ca_trust_flags in ca_certs:
|
|
if ca_nickname == nickname:
|
|
if ca_nickname == ipa_ca_nickname:
|
|
raise admintool.ScriptError(
|
|
'The IPA CA cannot be removed with this tool'
|
|
)
|
|
else:
|
|
found = True
|
|
break
|
|
|
|
if not found:
|
|
raise admintool.ScriptError(
|
|
'Unknown CA \'{}\''.format(nickname)
|
|
)
|
|
|
|
with certs.NSSDatabase() as tmpdb:
|
|
tmpdb.create_db()
|
|
for ca_cert, ca_nickname, ca_trust_flags in ca_certs:
|
|
tmpdb.add_cert(ca_cert, ca_nickname, ca_trust_flags)
|
|
loaded = tmpdb.list_certs()
|
|
logger.debug("loaded raw certs '%s'", loaded)
|
|
|
|
for nickname in nicknames:
|
|
tmpdb.delete_cert(nickname)
|
|
|
|
for ca_nickname, _trust_flags in loaded:
|
|
if ca_nickname in nicknames:
|
|
continue
|
|
if ipa_ca_nickname in nicknames:
|
|
raise admintool.ScriptError(
|
|
"The IPA CA cannot be removed")
|
|
logger.debug("Verifying %s", ca_nickname)
|
|
try:
|
|
tmpdb.verify_ca_cert_validity(ca_nickname)
|
|
except ValueError as e:
|
|
msg = "Verifying \'%s\' failed. Removing part of the " \
|
|
"chain? %s" % (nickname, e)
|
|
if options.force:
|
|
print(msg)
|
|
continue
|
|
raise admintool.ScriptError(msg)
|
|
else:
|
|
logger.debug("Verified %s", ca_nickname)
|
|
|
|
for _ca_cert, ca_nickname, _ca_trust_flags in ca_certs:
|
|
if ca_nickname in nicknames:
|
|
container_dn = DN(('cn', 'certificates'), ('cn', 'ipa'),
|
|
('cn', 'etc'), api.env.basedn)
|
|
dn = DN(('cn', nickname), container_dn)
|
|
logger.debug("Deleting %s", ca_nickname)
|
|
conn.delete_entry(dn)
|
|
return
|
|
|
|
def delete(self):
|
|
nickname = self.args[1]
|
|
self._delete_by_nickname([nickname], self.options)
|
|
|
|
def prune(self):
|
|
expired_certs = []
|
|
ca_certs = certstore.get_ca_certs_nss(api.Backend.ldap2,
|
|
api.env.basedn,
|
|
api.env.realm,
|
|
False)
|
|
|
|
now = datetime.datetime.now(tz=datetime.timezone.utc)
|
|
for ca_cert, ca_nickname, _ca_trust_flags in ca_certs:
|
|
if ca_cert.not_valid_after_utc < now:
|
|
expired_certs.append(ca_nickname)
|
|
|
|
|
|
if expired_certs:
|
|
self._delete_by_nickname(expired_certs, self.options)
|
|
|
|
print("Expired certificates deleted:")
|
|
for nickname in expired_certs:
|
|
print(nickname)
|
|
print("Run ipa-certupdate on enrolled machines to apply changes.")
|
|
else:
|
|
print("No certificates were deleted")
|
|
|
|
|
|
def update_ipa_ca_entry(api, cert):
|
|
"""
|
|
The Issuer DN of the IPA CA may have changed. Update the IPA CA entry.
|
|
|
|
:param api: finalised API object, with *connected* LDAP backend
|
|
:param cert: a python-cryptography Certificate object
|
|
|
|
"""
|
|
try:
|
|
entry = api.Backend.ldap2.get_entry(
|
|
DN(('cn', IPA_CA_CN), api.env.container_ca, api.env.basedn),
|
|
['ipacaissuerdn'])
|
|
entry['ipacaissuerdn'] = [DN(cert.issuer)]
|
|
api.Backend.ldap2.update_entry(entry)
|
|
except errors.EmptyModlist:
|
|
pass
|