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# Authors: Jan Cholasta <jcholast@redhat.com>
#
# Copyright (C) 2014 Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import absolute_import
import logging
import os
import tempfile
import shutil
from urllib.parse import urlsplit
from ipalib.install import certmonger, certstore, sysrestore
from ipalib.install.kinit import kinit_keytab
from ipapython import admintool, certdb, ipaldap, ipautil
from ipaplatform import services
from ipaplatform.paths import paths
from ipaplatform.tasks import tasks
from ipalib import api, errors, x509
from ipalib.constants import IPA_CA_NICKNAME, RENEWAL_CA_NAME
from ipalib.util import check_client_configuration
logger = logging.getLogger(__name__)
class CertUpdate(admintool.AdminTool):
command_name = 'ipa-certupdate'
usage = "%prog [options]"
description = ("Update local IPA certificate databases with certificates "
"from the server.")
def validate_options(self):
super(CertUpdate, self).validate_options(needs_root=True)
def run(self):
check_client_configuration()
api.bootstrap(context='cli_installer', confdir=paths.ETC_IPA)
api.finalize()
api.Backend.rpcclient.connect()
run_with_args(api)
api.Backend.rpcclient.disconnect()
def run_with_args(api):
"""
Run the certupdate procedure with the given API object.
:param api: API object with ldap2/rpcclient backend connected
(such that Commands can be invoked)
"""
server = urlsplit(api.env.jsonrpc_uri).hostname
ldap = ipaldap.LDAPClient.from_hostname_secure(server)
tmpdir = tempfile.mkdtemp(prefix="tmp-")
ccache_name = os.path.join(tmpdir, 'ccache')
old_krb5ccname = os.environ.get('KRB5CCNAME')
try:
principal = str('host/%s@%s' % (api.env.host, api.env.realm))
kinit_keytab(principal, paths.KRB5_KEYTAB, ccache_name)
os.environ['KRB5CCNAME'] = ccache_name
try:
result = api.Command.ca_is_enabled(version=u'2.107')
ca_enabled = result['result']
except (errors.CommandError, errors.NetworkError):
result = api.Command.env(server=True, version=u'2.0')
ca_enabled = result['result']['enable_ra']
ldap.gssapi_bind()
certs = certstore.get_ca_certs(
ldap, api.env.basedn, api.env.realm, ca_enabled)
if ca_enabled:
lwcas = api.Command.ca_find()['result']
else:
lwcas = []
finally:
if old_krb5ccname is None:
del os.environ['KRB5CCNAME']
else:
os.environ['KRB5CCNAME'] = old_krb5ccname
shutil.rmtree(tmpdir)
server_fstore = sysrestore.FileStore(paths.SYSRESTORE)
if server_fstore.has_files():
update_server(certs)
try:
# pylint: disable=import-error,ipa-forbidden-import
from ipaserver.install import cainstance
# pylint: enable=import-error,ipa-forbidden-import
cainstance.add_lightweight_ca_tracking_requests(lwcas)
except Exception:
logger.exception(
"Failed to add lightweight CA tracking requests")
update_client(certs)
def update_client(certs):
update_file(paths.IPA_CA_CRT, certs)
update_file(paths.KDC_CA_BUNDLE_PEM, certs)
update_file(paths.CA_BUNDLE_PEM, certs)
ipa_db = certdb.NSSDatabase(api.env.nss_dir)
# Remove old IPA certs from /etc/ipa/nssdb
for nickname in ('IPA CA', 'External CA cert'):
while ipa_db.has_nickname(nickname):
try:
ipa_db.delete_cert(nickname)
except ipautil.CalledProcessError as e:
logger.error(
"Failed to remove %s from %s: %s",
nickname, ipa_db.secdir, e)
break
update_db(ipa_db.secdir, certs)
tasks.remove_ca_certs_from_systemwide_ca_store()
tasks.insert_ca_certs_into_systemwide_ca_store(certs)
def update_server(certs):
instance = '-'.join(api.env.realm.split('.'))
update_db(paths.ETC_DIRSRV_SLAPD_INSTANCE_TEMPLATE % instance, certs)
if services.knownservices.dirsrv.is_running():
services.knownservices.dirsrv.restart(instance)
if services.knownservices.httpd.is_running():
services.knownservices.httpd.restart()
criteria = {
'cert-database': paths.PKI_TOMCAT_ALIAS_DIR,
'cert-nickname': IPA_CA_NICKNAME,
'ca-name': RENEWAL_CA_NAME,
}
request_id = certmonger.get_request_id(criteria)
if request_id is not None:
timeout = api.env.startup_timeout + 60
# The dogtag-ipa-ca-renew-agent-reuse Certmonger CA never
# actually renews the certificate; it only pulls it from the
# ca_renewal LDAP cert store.
#
# Why is this needed? If the CA cert gets renewed long
# before its notAfter (expiry) date (e.g. to switch from
# self-signed to external, or to switch to new external CA),
# then the other (i.e. not caRenewalMaster) CA replicas will
# not promptly pick up the new CA cert. So we make
# ipa-certupdate always check for an updated CA cert.
#
logger.debug("resubmitting certmonger request '%s'", request_id)
certmonger.resubmit_request(
request_id, ca='dogtag-ipa-ca-renew-agent-reuse', profile='')
try:
state = certmonger.wait_for_request(request_id, timeout)
except RuntimeError:
raise admintool.ScriptError(
"Resubmitting certmonger request '%s' timed out, "
"please check the request manually" % request_id)
ca_error = certmonger.get_request_value(request_id, 'ca-error')
if state != 'MONITORING' or ca_error:
raise admintool.ScriptError(
"Error resubmitting certmonger request '%s', "
"please check the request manually" % request_id)
logger.debug("modifying certmonger request '%s'", request_id)
certmonger.modify(request_id, ca='dogtag-ipa-ca-renew-agent')
update_file(paths.CA_CRT, certs)
update_file(paths.CACERT_PEM, certs)
def update_file(filename, certs, mode=0o644):
certs = (c[0] for c in certs if c[2] is not False)
try:
x509.write_certificate_list(certs, filename, mode=mode)
except Exception as e:
logger.error("failed to update %s: %s", filename, e)
def update_db(path, certs):
db = certdb.NSSDatabase(path)
for cert, nickname, trusted, eku in certs:
trust_flags = certstore.key_policy_to_trust_flags(trusted, True, eku)
try:
db.add_cert(cert, nickname, trust_flags)
except ipautil.CalledProcessError as e:
logger.error("failed to update %s in %s: %s", nickname, path, e)
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