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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/>.
#
import os
import tempfile
import shutil
from six.moves.urllib.parse import urlsplit
from ipapython import (admintool, ipautil, ipaldap, sysrestore, certmonger,
certdb)
from ipaplatform import services
from ipaplatform.paths import paths
from ipaplatform.tasks import tasks
from ipalib import api, errors, x509, certstore
from ipalib.constants import IPA_CA_CN
IPA_CA_NICKNAME = 'caSigningCert cert-pki-ca'
RENEWAL_CA_NAME = 'dogtag-ipa-ca-renew-agent'
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):
fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
if (not fstore.has_files() and
not os.path.exists(paths.IPA_DEFAULT_CONF)):
raise admintool.ScriptError(
"IPA client is not configured on this system.")
api.bootstrap(context='cli_installer')
api.finalize()
server = urlsplit(api.env.jsonrpc_uri).hostname
ldap = ipaldap.IPAdmin(server)
tmpdir = tempfile.mkdtemp(prefix="tmp-")
ccache_name = os.path.join(tmpdir, 'ccache')
try:
principal = str('host/%s@%s' % (api.env.host, api.env.realm))
ipautil.kinit_keytab(principal, paths.KRB5_KEYTAB, ccache_name)
os.environ['KRB5CCNAME'] = ccache_name
api.Backend.rpcclient.connect()
try:
result = api.Backend.rpcclient.forward(
'ca_is_enabled',
version=u'2.107',
)
ca_enabled = result['result']
except (errors.CommandError, errors.NetworkError):
result = api.Backend.rpcclient.forward(
'env',
server=True,
version=u'2.0',
)
ca_enabled = result['result']['enable_ra']
ldap.do_sasl_gssapi_bind()
certs = certstore.get_ca_certs(ldap, api.env.basedn,
api.env.realm, ca_enabled)
# find lightweight CAs (on renewal master only)
lwcas = []
for ca_obj in api.Command.ca_find()['result']:
if IPA_CA_CN not in ca_obj['cn']:
lwcas.append(ca_obj)
api.Backend.rpcclient.disconnect()
finally:
shutil.rmtree(tmpdir)
server_fstore = sysrestore.FileStore(paths.SYSRESTORE)
if server_fstore.has_files():
self.update_server(certs)
for entry in lwcas:
self.server_track_lightweight_ca(entry)
self.update_client(certs)
def update_client(self, certs):
self.update_file(paths.IPA_CA_CRT, certs)
ipa_db = certdb.NSSDatabase(paths.IPA_NSSDB_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:
self.log.error("Failed to remove %s from %s: %s",
nickname, ipa_db.secdir, e)
break
self.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(self, certs):
instance = '-'.join(api.env.realm.split('.'))
self.update_db(
paths.ETC_DIRSRV_SLAPD_INSTANCE_TEMPLATE % instance, certs)
if services.knownservices.dirsrv.is_running():
services.knownservices.dirsrv.restart(instance)
self.update_db(paths.HTTPD_ALIAS_DIR, certs)
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
self.log.debug("resubmitting certmonger request '%s'", request_id)
certmonger.resubmit_request(
request_id, profile='ipaRetrievalOrReuse')
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)
self.log.debug("modifying certmonger request '%s'", request_id)
certmonger.modify(request_id, profile='ipaCACertRenewal')
self.update_file(paths.CA_CRT, certs)
def server_track_lightweight_ca(self, entry):
nickname = "{} {}".format(IPA_CA_NICKNAME, entry['ipacaid'][0])
criteria = {
'cert-database': paths.PKI_TOMCAT_ALIAS_DIR,
'cert-nickname': nickname,
'ca-name': RENEWAL_CA_NAME,
}
request_id = certmonger.get_request_id(criteria)
if request_id is None:
try:
certmonger.dogtag_start_tracking(
secdir=paths.PKI_TOMCAT_ALIAS_DIR,
pin=certmonger.get_pin('internal'),
pinfile=None,
nickname=nickname,
ca=RENEWAL_CA_NAME,
pre_command='stop_pkicad',
post_command='renew_ca_cert "%s"' % nickname,
)
request_id = certmonger.get_request_id(criteria)
certmonger.modify(request_id, profile='ipaCACertRenewal')
self.log.debug(
'Lightweight CA renewal: '
'added tracking request for "%s"', nickname)
except RuntimeError as e:
self.log.error(
'Lightweight CA renewal: Certmonger failed to '
'start tracking certificate: %s', e)
else:
self.log.debug(
'Lightweight CA renewal: '
'already tracking certificate "%s"', nickname)
def update_file(self, filename, certs, mode=0o444):
certs = (c[0] for c in certs if c[2] is not False)
try:
x509.write_certificate_list(certs, filename)
except Exception as e:
self.log.error("failed to update %s: %s", filename, e)
def update_db(self, 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:
self.log.error(
"failed to update %s in %s: %s", nickname, path, e)
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