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#!/usr/bin/python2 -E
#
# Authors:
#   Rob Crittenden <rcritten@redhat.com>
#   Jan Cholasta <jcholast@redhat.com>
#
# Copyright (C) 2013  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 sys
import os
import syslog
import tempfile
import shutil
import traceback

from ipapython import dogtag, certmonger, ipautil
from ipapython import services as ipaservices
from ipalib import api, errors, x509, util
from ipaserver.install import certs, cainstance, installutils
from ipaserver.plugins.ldap2 import ldap2

def main():
    nickname = sys.argv[1]

    api.bootstrap(context='restart')
    api.finalize()

    configured_constants = dogtag.configured_constants(api)
    alias_dir = configured_constants.ALIAS_DIR
    dogtag_service = ipaservices.knownservices[configured_constants.SERVICE_NAME]
    dogtag_instance = configured_constants.PKI_INSTANCE_NAME

    # dogtag opens its NSS database in read/write mode so we need it
    # shut down so certmonger can open it read/write mode. This avoids
    # database corruption. It should already be stopped by the pre-command
    # but lets be sure.
    if dogtag_service.is_running(dogtag_instance):
        syslog.syslog(
            syslog.LOG_NOTICE, "Stopping %s" % dogtag_service.service_name)
        try:
            dogtag_service.stop(dogtag_instance)
        except Exception, e:
            syslog.syslog(
                syslog.LOG_ERR,
                "Cannot stop %s: %s" % (dogtag_service.service_name, e))
        else:
            syslog.syslog(
                syslog.LOG_NOTICE, "Stopped %s" % dogtag_service.service_name)

    # Fetch the new certificate
    db = certs.CertDB(api.env.realm, nssdir=alias_dir)
    cert = db.get_cert_from_db(nickname, pem=False)
    if not cert:
        syslog.syslog(syslog.LOG_ERR, 'No certificate %s found.' % nickname)
        sys.exit(1)

    cainstance.update_cert_config(nickname, cert, configured_constants)

    ca = cainstance.CAInstance(api.env.realm, certs.NSS_DIR)
    if ca.is_renewal_master():
        cainstance.update_people_entry(cert)

    if nickname == 'auditSigningCert cert-pki-ca':
        # Fix trust on the audit cert
        try:
            db.run_certutil(['-M',
                             '-n', nickname,
                             '-t', 'u,u,Pu'])
            syslog.syslog(
                syslog.LOG_NOTICE,
                "Updated trust on certificate %s in %s" % (nickname, db.secdir))
        except ipautil.CalledProcessError:
            syslog.syslog(
                syslog.LOG_ERR,
                "Updating trust on certificate %s failed in %s" %
                (nickname, db.secdir))

    # Now we can start the CA. Using the ipaservices start should fire
    # off the servlet to verify that the CA is actually up and responding so
    # when this returns it should be good-to-go. The CA was stopped in the
    # pre-save state.
    syslog.syslog(syslog.LOG_NOTICE, 'Starting %s' % dogtag_service.service_name)
    try:
        dogtag_service.start(dogtag_instance)
    except Exception, e:
        syslog.syslog(
            syslog.LOG_ERR,
            "Cannot start %s: %s" % (dogtag_service.service_name, e))
    else:
        syslog.syslog(
            syslog.LOG_NOTICE, "Started %s" % dogtag_service.service_name)

try:
    main()
except Exception:
    syslog.syslog(syslog.LOG_ERR, traceback.format_exc())