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# Authors:
# Rob Crittenden <rcritten@@redhat.com>
# John Dennis <jdennis@redhat.com>
#
# Copyright (C) 2009 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; version 2 only
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Backend plugin for RA activities.
The `ra` plugin provides access to the CA to issue, retrieve, and revoke
certificates via the following methods:
* `ra.check_request_status()` - check certificate request status.
* `ra.get_certificate()` - retrieve an existing certificate.
* `ra.request_certificate()` - request a new certificate.
* `ra.revoke_certificate()` - revoke a certificate.
* `ra.take_certificate_off_hold()` - take a certificate off hold.
"""
from ipalib import api, SkipPluginModule
if api.env.ra_plugin != 'selfsign':
# In this case, abort loading this plugin module...
raise SkipPluginModule(reason='selfsign is not selected as RA plugin, it is %s' % api.env.ra_plugin)
from ipalib import Backend
from ipalib import errors
from ipalib import x509
from ipalib import pkcs10
from ipapython.certdb import CA_NICKNAME
import subprocess
import os
import re
from ipaserver.plugins import rabase
from ipaserver.install import certs
import tempfile
from ipalib import _
from ipalib.plugins.cert import get_csr_hostname
from nss.error import NSPRError
class ra(rabase.rabase):
"""
Request Authority backend plugin.
"""
def request_certificate(self, csr, request_type='pkcs10'):
"""
:param csr: The certificate signing request.
:param request_type: The request type (defaults to ``'pkcs10'``).
Submit certificate signing request.
The command returns a dict with these possible key/value pairs.
Some key/value pairs may be absent.
+---------------+---------------+---------------+
|result name |result type |comments |
+===============+===============+===============+
|serial_number |unicode [1]_ | |
+---------------+---------------+---------------+
|certificate |unicode [2]_ | |
+---------------+---------------+---------------+
|request_id |unicode | |
+---------------+---------------+---------------+
|subject |unicode | |
+---------------+---------------+---------------+
.. [1] Passed through XMLRPC as decimal string. Can convert to
optimal integer type (int or long) via int(serial_number)
.. [2] Base64 encoded
"""
try:
config = api.Command['config_show']()['result']
subject_base = config.get('ipacertificatesubjectbase')[0]
hostname = get_csr_hostname(csr)
base = re.split(',\s*(?=\w+=)', subject_base)
base.insert(0,'CN=%s' % hostname)
subject_base = ",".join(base)
request = pkcs10.load_certificate_request(csr)
# python-nss normalizes the request subject
request_subject = str(pkcs10.get_subject(request))
if str(subject_base).lower() != request_subject.lower():
raise errors.CertificateOperationError(error=_('Request subject "%(request_subject)s" does not match the form "%(subject_base)s"') % \
{'request_subject' : request_subject, 'subject_base' : subject_base})
except errors.CertificateOperationError, e:
raise e
except NSPRError, e:
raise errors.CertificateOperationError(error=_('unable to decode csr: %s' % e))
# certutil wants the CSR to have have a header and footer. Add one
# if it isn't there.
s = csr.find('-----BEGIN NEW CERTIFICATE REQUEST-----')
if s == -1:
s = csr.find('-----BEGIN CERTIFICATE REQUEST-----')
if s == -1:
csr = '-----BEGIN NEW CERTIFICATE REQUEST-----\n' + csr + \
'\n-----END NEW CERTIFICATE REQUEST-----\n'
try:
(csr_fd, csr_name) = tempfile.mkstemp()
os.write(csr_fd, csr)
os.close(csr_fd)
except Exception, e:
try:
os.remove(csr_name)
except:
pass
self.log.error('unable to create temporary csr file: %s' % e)
raise errors.CertificateOperationError(error=_('file operation'))
try:
(cert_fd, cert_name) = tempfile.mkstemp()
os.close(cert_fd)
except Exception, e:
try:
os.remove(csr_name)
except:
pass
try:
os.remove(cert_name)
except:
pass
self.log.error('unable to create temporary certificate file: %s' % e)
raise errors.CertificateOperationError(error=_('file operation'))
try:
serialno = certs.next_serial(self.serial_file)
except Exception, e:
try:
os.remove(csr_name)
except:
pass
try:
os.remove(cert_name)
except:
pass
self.log.error('next_serial() failed: %s' % e)
raise errors.CertificateOperationError(error=_('cannot obtain next serial number'))
try:
args = [
"/usr/bin/certutil",
"-C",
"-d", self.sec_dir,
"-c", CA_NICKNAME,
"-i", csr_name,
"-o", cert_name,
"-m", str(serialno),
"-v", "60",
"-1",
"-5",
"-6",
"-a",
"-f", self.pwd_file]
self.log.debug("issue cert: %s" % str(args))
p = subprocess.Popen(args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE, close_fds=True)
p.stdin.write("0\n1\n2\n3\n9\ny\n")
p.stdin.write("0\n9\nn\n")
p.stdin.write("1\n9\nn\n")
(stdout, stderr) = p.communicate()
status = p.returncode
self.log.debug("stdout = %s" % stdout)
self.log.debug("stderr = %s" % stderr)
if status != 0:
try:
os.remove(cert_name)
except:
pass
self.log.error('certutil failed: %s' % stderr)
raise errors.CertificateOperationError(error=_('certutil failure'))
finally:
try:
os.remove(csr_name)
except:
pass
try:
cert_fd = open(cert_name)
cert = cert_fd.read()
cert_fd.close()
finally:
try:
os.remove(cert_name)
except:
pass
try:
subject = x509.get_subject(cert)
serial = x509.get_serial_number(cert)
except NSPRError, e:
self.log.error('Unable to decode certificate in entry: %s' % str(e))
raise errors.CertificateOperationError(error='Unable to decode certificate in entry: %s' % str(e))
# To make it look like dogtag return just the base64 data.
cert = cert.replace('\n','')
cert = cert.replace('\r','')
s = cert.find('-----BEGIN CERTIFICATE-----')
e = cert.find('-----END CERTIFICATE-----')
s = s + 27
cert = cert[s:e]
cmd_result = {}
cmd_result['serial_number'] = unicode(serial) # convert long to decimal unicode string
cmd_result['certificate'] = unicode(cert)
cmd_result['subject'] = unicode(subject)
return cmd_result
api.register(ra)
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