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#
# This file is part of pyasn1-modules software.
#
# Created by Russ Housley
# Copyright (c) 2019, Vigil Security, LLC
# License: http://snmplabs.com/pyasn1/license.html
#
import sys
import unittest
from pyasn1.codec.der.decoder import decode as der_decoder
from pyasn1.codec.der.encoder import encode as der_encoder
from pyasn1_modules import pem
from pyasn1_modules import rfc5280
from pyasn1_modules import rfc6010
class UnconstrainedCCCExtensionTestCase(unittest.TestCase):
unconstrained_pem_text = "MB0GCCsGAQUFBwESBBEwDzANBgsqhkiG9w0BCRABAA=="
def setUp(self):
self.asn1Spec = rfc5280.Extension()
def testDerCodec(self):
substrate = pem.readBase64fromText(self.unconstrained_pem_text)
asn1Object, rest = der_decoder(substrate, asn1Spec=self.asn1Spec)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
self.assertEqual(
rfc6010.id_pe_cmsContentConstraints, asn1Object['extnID'])
evalue, rest = der_decoder(
asn1Object['extnValue'],
asn1Spec=rfc6010.CMSContentConstraints())
self.assertFalse(rest)
self.assertTrue(evalue.prettyPrint())
self.assertEqual(asn1Object['extnValue'], der_encoder(evalue))
self.assertEqual(
rfc6010.id_ct_anyContentType, evalue[0]['contentType'])
class ConstrainedCCCExtensionTestCase(unittest.TestCase):
constrained_pem_text = """\
MIG7BggrBgEFBQcBEgSBrjCBqzA0BgsqhkiG9w0BCRABEDAlMCMGCyqGSIb3DQEJ
EAwBMRQMElZpZ2lsIFNlY3VyaXR5IExMQzAwBgpghkgBZQIBAk4CMCIwIAYLKoZI
hvcNAQkQDAsxEQwPa3RhLmV4YW1wbGUuY29tMDEGCyqGSIb3DQEJEAEZMCIwIAYL
KoZIhvcNAQkQDAsxEQwPa3RhLmV4YW1wbGUuY29tMA4GCSqGSIb3DQEHAQoBAQ==
"""
def setUp(self):
self.asn1Spec = rfc5280.Extension()
def testDerCodec(self):
substrate = pem.readBase64fromText(self.constrained_pem_text)
asn1Object, rest = der_decoder(substrate, asn1Spec=self.asn1Spec)
self.assertFalse(rest)
self.assertTrue(asn1Object.prettyPrint())
self.assertEqual(substrate, der_encoder(asn1Object))
self.assertEqual(
rfc6010.id_pe_cmsContentConstraints, asn1Object['extnID'])
evalue, rest = der_decoder(
asn1Object['extnValue'],
asn1Spec=rfc6010.CMSContentConstraints())
self.assertFalse(rest)
self.assertTrue(evalue.prettyPrint())
self.assertEqual(asn1Object['extnValue'], der_encoder(evalue))
constraint_count = 0
attribute_count = 0
cannot_count = 0
for ccc in evalue:
constraint_count += 1
if ccc['canSource'] == 1:
cannot_count += 1
if ccc['attrConstraints'].hasValue():
for attr in ccc['attrConstraints']:
attribute_count += 1
self.assertEqual(4, constraint_count)
self.assertEqual(3, attribute_count)
self.assertEqual(1, cannot_count)
def testExtensionsMap(self):
substrate = pem.readBase64fromText(self.constrained_pem_text)
asn1Object, rest = der_decoder(substrate, asn1Spec=self.asn1Spec)
self.assertIn(asn1Object['extnID'], rfc5280.certificateExtensionsMap)
suite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
if __name__ == '__main__':
unittest.TextTestRunner(verbosity=2).run(suite)
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