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test_raw.py
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test_raw.py
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import copy
import ctypes
import ctypes.util
import os
import socket
import sys
import unittest
import gssapi.raw as gb
import gssapi.raw.misc as gbmisc
import k5test.unit as ktu
import k5test as kt
from collections.abc import Set
TARGET_SERVICE_NAME = b'host'
FQDN = (
'localhost' if sys.platform == 'darwin' else socket.getfqdn()
).encode('utf-8')
SERVICE_PRINCIPAL = TARGET_SERVICE_NAME + b'/' + FQDN
if sys.platform == 'darwin':
TARGET_SERVICE_NAME += b"@" + FQDN
class _GSSAPIKerberosTestCase(kt.KerberosTestCase):
@classmethod
def setUpClass(cls):
super(_GSSAPIKerberosTestCase, cls).setUpClass()
svc_princ = SERVICE_PRINCIPAL.decode("UTF-8")
cls.realm.kinit(svc_princ, flags=['-k'])
cls._init_env()
cls.USER_PRINC = cls.realm.user_princ.split('@')[0].encode("UTF-8")
cls.ADMIN_PRINC = cls.realm.admin_princ.split('@')[0].encode("UTF-8")
cls.KRB5_LIB_PATH = os.environ.get("GSSAPI_KRB5_MAIN_LIB", None)
@classmethod
def _init_env(cls):
cls._saved_env = copy.deepcopy(os.environ)
for k, v in cls.realm.env.items():
os.environ[k] = v
@classmethod
def _restore_env(cls):
for k in copy.deepcopy(os.environ):
if k in cls._saved_env:
os.environ[k] = cls._saved_env[k]
else:
del os.environ[k]
cls._saved_env = None
@classmethod
def tearDownClass(cls):
super(_GSSAPIKerberosTestCase, cls).tearDownClass()
cls._restore_env()
class TestBaseUtilities(_GSSAPIKerberosTestCase):
def setUp(self):
self.realm.kinit(SERVICE_PRINCIPAL.decode("UTF-8"), flags=['-k'])
def test_indicate_mechs(self):
mechs = gb.indicate_mechs()
self.assertIsInstance(mechs, set)
self.assertIn(gb.MechType.kerberos, mechs)
def test_import_name(self):
imported_name = gb.import_name(TARGET_SERVICE_NAME)
self.assertIsInstance(imported_name, gb.Name)
gb.release_name(imported_name)
def test_canonicalize_export_name(self):
imported_name = gb.import_name(self.ADMIN_PRINC,
gb.NameType.kerberos_principal)
canonicalized_name = gb.canonicalize_name(imported_name,
gb.MechType.kerberos)
self.assertIsInstance(canonicalized_name, gb.Name)
exported_name = gb.export_name(canonicalized_name)
self.assertIsInstance(exported_name, bytes)
self.assertGreater(len(exported_name), 0)
def test_duplicate_name(self):
orig_name = gb.import_name(TARGET_SERVICE_NAME)
new_name = gb.duplicate_name(orig_name)
self.assertIsNotNone(new_name)
self.assertTrue(gb.compare_name(orig_name, new_name))
def test_display_name(self):
imported_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
displ_resp = gb.display_name(imported_name)
self.assertIsNotNone(displ_resp)
displayed_name, out_type = displ_resp
self.assertIsInstance(displayed_name, bytes)
self.assertEqual(displayed_name, TARGET_SERVICE_NAME)
self.assertEqual(out_type, gb.NameType.hostbased_service)
# NB(directxman12): we don't test display_name_ext because the krb5 mech
# doesn't actually implement it
@ktu.gssapi_extension_test('rfc6680', 'RFC 6680')
@ktu.krb_provider_test(['mit'], 'Heimdal does not implemented for krb5')
def test_inquire_name_not_mech_name(self):
base_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
inquire_res = gb.inquire_name(base_name)
self.assertIsNotNone(inquire_res)
self.assertFalse(inquire_res.is_mech_name)
self.assertIsNone(inquire_res.mech)
@ktu.gssapi_extension_test('rfc6680', 'RFC 6680')
@ktu.krb_provider_test(['mit'], 'Heimdal does not implemented for krb5')
def test_inquire_name_mech_name(self):
base_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
mech_name = gb.canonicalize_name(base_name, gb.MechType.kerberos)
inquire_res = gb.inquire_name(mech_name)
self.assertIsNotNone(inquire_res)
self.assertTrue(inquire_res.is_mech_name)
self.assertIsInstance(inquire_res.mech, gb.OID)
self.assertEqual(inquire_res.mech, gb.MechType.kerberos)
@ktu.gssapi_extension_test('rfc6680', 'RFC 6680')
@ktu.gssapi_extension_test('rfc6680_comp_oid',
'RFC 6680 (COMPOSITE_EXPORT OID)')
def test_import_export_name_composite_no_attrs(self):
base_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
canon_name = gb.canonicalize_name(base_name,
gb.MechType.kerberos)
exported_name = gb.export_name_composite(canon_name)
self.assertIsInstance(exported_name, bytes)
imported_name = gb.import_name(exported_name,
gb.NameType.composite_export)
self.assertIsInstance(imported_name, gb.Name)
# NB(directxman12): the greet_client plugin only allows for one value
@ktu.gssapi_extension_test('rfc6680', 'RFC 6680')
@ktu.krb_plugin_test('authdata', 'greet_client')
def test_inquire_name_with_attrs(self):
base_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
canon_name = gb.canonicalize_name(base_name, gb.MechType.kerberos)
gb.set_name_attribute(canon_name, b'urn:greet:greeting',
[b'some greeting'])
inquire_res = gb.inquire_name(canon_name)
self.assertIsInstance(inquire_res.attrs, list)
self.assertEqual(inquire_res.attrs, [b"urn:greet:greeting"])
@ktu.gssapi_extension_test('rfc6680', 'RFC 6680')
@ktu.krb_plugin_test('authdata', 'greet_client')
def test_basic_get_set_delete_name_attributes_no_auth(self):
base_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
canon_name = gb.canonicalize_name(base_name, gb.MechType.kerberos)
gb.set_name_attribute(canon_name, b'urn:greet:greeting',
[b'some other val'], complete=True)
get_res = gb.get_name_attribute(canon_name, b'urn:greet:greeting')
self.assertIsNotNone(get_res)
self.assertIsInstance(get_res.values, list)
self.assertEqual(get_res.values, [b"some other val"])
self.assertIsInstance(get_res.display_values, list)
self.assertEqual(get_res.display_values, get_res.values)
self.assertTrue(get_res.complete)
self.assertFalse(get_res.authenticated)
gb.delete_name_attribute(canon_name, b'urn:greet:greeting')
# NB(directxman12): the code below currently segfaults due to the way
# that krb5 and the krb5 greet plugin is written
# gb.get_name_attribute.should_raise(
# gb.exceptions.OperationUnavailableError, canon_name,
# 'urn:greet:greeting')
@ktu.gssapi_extension_test('rfc6680', 'RFC 6680')
@ktu.krb_plugin_test('authdata', 'greet_client')
def test_import_export_name_composite(self):
base_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
canon_name = gb.canonicalize_name(base_name, gb.MechType.kerberos)
gb.set_name_attribute(canon_name, b'urn:greet:greeting', [b'some val'])
exported_name = gb.export_name_composite(canon_name)
self.assertIsInstance(exported_name, bytes)
# TODO(directxman12): when you just import a token as composite,
# appears as this name whose text is all garbled, since it contains
# all of the attributes, etc, but doesn't properly have the attributes.
# Once it's canonicalized, the attributes reappear. However, if you
# just import it as normal export, the attributes appear directly.
# It is thus unclear as to what is going on
# imported_name_raw = gb.import_name(exported_name,
# gb.NameType.composite_export)
# imported_name = gb.canonicalize_name(imported_name_r,
# gb.MechType.kerberos)
imported_name = gb.import_name(exported_name, gb.NameType.export)
self.assertIsInstance(imported_name, gb.Name)
get_res = gb.get_name_attribute(imported_name, b'urn:greet:greeting')
self.assertEqual(get_res.values, [b"some val"])
def test_compare_name(self):
service_name1 = gb.import_name(TARGET_SERVICE_NAME)
service_name2 = gb.import_name(TARGET_SERVICE_NAME)
init_name = gb.import_name(self.ADMIN_PRINC,
gb.NameType.kerberos_principal)
self.assertTrue(gb.compare_name(service_name1, service_name2))
self.assertTrue(gb.compare_name(service_name2, service_name1))
self.assertFalse(gb.compare_name(service_name1, init_name))
gb.release_name(service_name1)
gb.release_name(service_name2)
gb.release_name(init_name)
def test_display_status(self):
status_resp = gbmisc._display_status(0, False)
self.assertIsNotNone(status_resp)
status, ctx, cont = status_resp
self.assertIsInstance(status, bytes)
self.assertGreater(len(status), 0)
self.assertIsInstance(ctx, int)
self.assertIsInstance(cont, bool)
self.assertFalse(cont)
def test_acquire_creds(self):
name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
cred_resp = gb.acquire_cred(name)
self.assertIsNotNone(cred_resp)
creds, actual_mechs, ttl = cred_resp
self.assertIsInstance(creds, gb.Creds)
self.assertIn(gb.MechType.kerberos, actual_mechs)
if sys.platform != 'darwin':
self.assertIsInstance(ttl, int)
gb.release_name(name)
gb.release_cred(creds)
@ktu.gssapi_extension_test('cred_imp_exp', 'credentials import-export')
def test_cred_import_export(self):
creds = gb.acquire_cred(None).creds
token = gb.export_cred(creds)
imported_creds = gb.import_cred(token)
inquire_orig = gb.inquire_cred(creds, name=True)
inquire_imp = gb.inquire_cred(imported_creds, name=True)
self.assertTrue(gb.compare_name(inquire_orig.name, inquire_imp.name))
def test_context_time(self):
target_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
ctx_resp = gb.init_sec_context(target_name)
client_token1 = ctx_resp[3]
client_ctx = ctx_resp[0]
server_name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
server_creds = gb.acquire_cred(server_name)[0]
server_resp = gb.accept_sec_context(client_token1,
acceptor_creds=server_creds)
server_tok = server_resp[3]
client_resp2 = gb.init_sec_context(target_name,
context=client_ctx,
input_token=server_tok)
ctx = client_resp2[0]
ttl = gb.context_time(ctx)
self.assertIsInstance(ttl, int)
self.assertGreater(ttl, 0)
def test_inquire_context(self):
target_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
ctx_resp = gb.init_sec_context(target_name)
client_token1 = ctx_resp[3]
client_ctx = ctx_resp[0]
server_name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
server_creds = gb.acquire_cred(server_name)[0]
server_resp = gb.accept_sec_context(client_token1,
acceptor_creds=server_creds)
server_tok = server_resp[3]
client_resp2 = gb.init_sec_context(target_name,
context=client_ctx,
input_token=server_tok)
ctx = client_resp2[0]
inq_resp = gb.inquire_context(ctx)
self.assertIsNotNone(inq_resp)
src_name, target_name, ttl, mech_type, flags, local_est, is_open = \
inq_resp
self.assertIsInstance(src_name, gb.Name)
self.assertIsInstance(target_name, gb.Name)
self.assertIsInstance(ttl, int)
self.assertEqual(mech_type, gb.MechType.kerberos)
self.assertIsInstance(flags, Set)
self.assertGreater(len(flags), 0)
self.assertIsInstance(local_est, bool)
self.assertTrue(local_est)
self.assertIsInstance(is_open, bool)
self.assertTrue(is_open)
# NB(directxman12): We don't test `process_context_token` because
# there is no clear non-deprecated way to test it
@ktu.gssapi_extension_test('s4u', 'S4U')
def test_add_cred_impersonate_name(self):
server_name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
password = self.realm.password('user')
self.realm.kinit(self.realm.user_princ, password=password,
flags=["-f"])
name = gb.import_name(b"user", gb.NameType.kerberos_principal)
client_creds = gb.acquire_cred(name, usage="initiate").creds
cctx_res = gb.init_sec_context(
server_name, creds=client_creds,
flags=gb.RequirementFlag.delegate_to_peer)
self.realm.kinit(SERVICE_PRINCIPAL.decode("utf-8"), flags=["-k"])
server_creds = gb.acquire_cred(server_name, usage="both").creds
sctx_res = gb.accept_sec_context(cctx_res.token, server_creds)
self.assertTrue(gb.inquire_context(sctx_res.context).complete)
input_creds = gb.Creds()
imp_resp = gb.add_cred_impersonate_name(input_creds,
sctx_res.delegated_creds,
server_name,
gb.MechType.kerberos)
self.assertIsNotNone(imp_resp)
self.assertIsInstance(imp_resp, gb.AddCredResult)
self.assertIsInstance(imp_resp.creds, gb.Creds)
self.assertIn(gb.MechType.kerberos, imp_resp.mechs)
self.assertIsInstance(imp_resp.init_lifetime, int)
self.assertGreater(imp_resp.init_lifetime, 0)
self.assertIsInstance(imp_resp.accept_lifetime, int)
self.assertEqual(imp_resp.accept_lifetime, 0)
@ktu.gssapi_extension_test('s4u', 'S4U')
def test_acquire_creds_impersonate_name(self):
server_name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
password = self.realm.password('user')
self.realm.kinit(self.realm.user_princ, password=password,
flags=["-f"])
name = gb.import_name(b'user', gb.NameType.kerberos_principal)
client_creds = gb.acquire_cred(name, usage="initiate").creds
cctx_res = gb.init_sec_context(
server_name, creds=client_creds,
flags=gb.RequirementFlag.delegate_to_peer)
self.realm.kinit(SERVICE_PRINCIPAL.decode("utf-8"), flags=["-k"])
server_creds = gb.acquire_cred(server_name, usage='both').creds
sctx_res = gb.accept_sec_context(cctx_res.token, server_creds)
self.assertTrue(gb.inquire_context(sctx_res.context).complete)
imp_resp = gb.acquire_cred_impersonate_name(sctx_res.delegated_creds,
server_name)
self.assertIsInstance(imp_resp, gb.AcquireCredResult)
self.assertIsInstance(imp_resp.creds, gb.Creds)
self.assertIn(gb.MechType.kerberos, imp_resp.mechs)
self.assertIsInstance(imp_resp.lifetime, int)
self.assertGreater(imp_resp.lifetime, 0)
@ktu.gssapi_extension_test('s4u', 'S4U')
@ktu.krb_minversion_test('1.11',
'returning delegated S4U2Proxy credentials',
provider='mit')
def test_always_get_delegated_creds(self):
svc_princ = SERVICE_PRINCIPAL.decode("UTF-8")
self.realm.kinit(svc_princ, flags=['-k', '-f'])
target_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
client_token = gb.init_sec_context(target_name).token
# if our acceptor creds have a usage of both, we get
# s4u2proxy delegated credentials
server_creds = gb.acquire_cred(None, usage='both').creds
server_ctx_resp = gb.accept_sec_context(client_token,
acceptor_creds=server_creds)
self.assertIsNotNone(server_ctx_resp)
self.assertIsInstance(server_ctx_resp.delegated_creds, gb.Creds)
@ktu.gssapi_extension_test('rfc5588', 'RFC 5588')
def test_store_cred_acquire_cred(self):
# we need to acquire a forwardable ticket
svc_princ = SERVICE_PRINCIPAL.decode("UTF-8")
self.realm.kinit(svc_princ, flags=['-k', '-f'])
target_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
client_creds = gb.acquire_cred(None, usage='initiate').creds
client_ctx_resp = gb.init_sec_context(
target_name, creds=client_creds,
flags=gb.RequirementFlag.delegate_to_peer)
client_token = client_ctx_resp[3]
server_creds = gb.acquire_cred(None, usage='accept').creds
server_ctx_resp = gb.accept_sec_context(client_token,
acceptor_creds=server_creds)
deleg_creds = server_ctx_resp.delegated_creds
self.assertIsNotNone(deleg_creds)
store_res = gb.store_cred(deleg_creds, usage='initiate',
mech=gb.MechType.kerberos,
set_default=True, overwrite=True)
self.assertIsNotNone(store_res)
if self.realm.provider.lower() != 'heimdal':
# Heimdal does not return this info as expected
self.assertEqual(store_res.usage, "initiate")
self.assertIn(gb.MechType.kerberos, store_res.mechs)
deleg_name = gb.inquire_cred(deleg_creds).name
acq_resp = gb.acquire_cred(deleg_name, usage='initiate')
self.assertIsNotNone(acq_resp)
@ktu.gssapi_extension_test('cred_store', 'credentials store')
def test_store_cred_into_acquire_cred(self):
CCACHE = 'FILE:{tmpdir}/other_ccache'.format(tmpdir=self.realm.tmpdir)
KT = '{tmpdir}/other_keytab'.format(tmpdir=self.realm.tmpdir)
store = {b'ccache': CCACHE.encode('UTF-8'),
b'keytab': KT.encode('UTF-8')}
princ_name = 'service/cs@' + self.realm.realm
self.realm.addprinc(princ_name)
self.realm.extract_keytab(princ_name, KT)
self.realm.kinit(princ_name, None, ['-k', '-t', KT])
initial_creds = gb.acquire_cred(None, usage='initiate').creds
# NB(sross): overwrite because the ccache doesn't exist yet
expected_usage = 'initiate'
store_kwargs = {}
if self.realm.provider.lower() == 'heimdal':
expected_usage = 'both'
store_kwargs['mech'] = gb.MechType.kerberos
store_kwargs['usage'] = 'initiate'
store_res = gb.store_cred_into(store, initial_creds, overwrite=True,
**store_kwargs)
self.assertIsNotNone(store_res.mechs)
self.assertEqual(store_res.usage, expected_usage)
name = gb.import_name(princ_name.encode('UTF-8'))
retrieve_res = gb.acquire_cred_from(store, name)
self.assertIsNotNone(retrieve_res)
self.assertIsNotNone(retrieve_res.creds)
self.assertIsInstance(retrieve_res.creds, gb.Creds)
self.assertIn(gb.MechType.kerberos, retrieve_res.mechs)
self.assertIsInstance(retrieve_res.lifetime, int)
def test_add_cred(self):
if sys.platform == 'darwin':
self.skipTest('macOS fails to find the credential')
target_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
client_ctx_resp = gb.init_sec_context(target_name)
client_token = client_ctx_resp[3]
del client_ctx_resp # free all the things (except the token)!
server_name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
server_creds = gb.acquire_cred(server_name, usage='both')[0]
server_ctx_resp = gb.accept_sec_context(client_token,
acceptor_creds=server_creds)
input_creds = gb.Creds()
imp_resp = gb.add_cred(input_creds,
server_ctx_resp[1],
gb.MechType.kerberos)
self.assertIsNotNone(imp_resp)
new_creds, actual_mechs, output_init_ttl, output_accept_ttl = imp_resp
self.assertIsInstance(new_creds, gb.Creds)
self.assertIn(gb.MechType.kerberos, actual_mechs)
self.assertIsInstance(output_init_ttl, int)
self.assertIsInstance(output_accept_ttl, int)
# NB(sross): we skip testing add_cred with mutate for the same reasons
# that testing add_cred in the high-level API is skipped
def test_inquire_creds(self):
name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
cred = gb.acquire_cred(name).creds
inq_resp = gb.inquire_cred(cred)
self.assertIsNotNone(inq_resp)
self.assertIsInstance(inq_resp.name, gb.Name)
if self.realm.provider.lower() == 'heimdal':
name = gb.import_name(self.realm.host_princ.encode('utf-8'),
gb.NameType.kerberos_principal)
self.assertTrue(gb.compare_name(name, inq_resp.name))
if sys.platform == 'darwin':
self.assertEqual(inq_resp.usage, "accept")
else:
self.assertIsInstance(inq_resp.lifetime, int)
self.assertEqual(inq_resp.usage, "both")
self.assertIn(gb.MechType.kerberos, inq_resp.mechs)
def test_create_oid_from_bytes(self):
kerberos_bytes = gb.MechType.kerberos.__bytes__()
new_oid = gb.OID(elements=kerberos_bytes)
self.assertEqual(new_oid, gb.MechType.kerberos)
del new_oid # make sure we can dealloc
def test_error_dispatch(self):
err_code1 = gb.ParameterReadError.CALLING_CODE
err_code2 = gb.BadNameError.ROUTINE_CODE
err = gb.GSSError(err_code1 | err_code2, 0)
self.assertIsInstance(err, gb.NameReadError)
self.assertEqual(err.maj_code, err_code1 | err_code2)
def test_inquire_names_for_mech(self):
res = gb.inquire_names_for_mech(gb.MechType.kerberos)
self.assertIsNotNone(res)
self.assertIn(gb.NameType.kerberos_principal, res)
def test_inquire_mechs_for_name(self):
name = gb.import_name(self.USER_PRINC,
gb.NameType.kerberos_principal)
res = gb.inquire_mechs_for_name(name)
self.assertIsNotNone(res)
self.assertIn(gb.MechType.kerberos, res)
@ktu.gssapi_extension_test('password', 'Password')
def test_acquire_cred_with_password(self):
password = self.realm.password('user')
self.realm.kinit(self.realm.user_princ, password=password)
name = gb.import_name(b'user', gb.NameType.kerberos_principal)
imp_resp = gb.acquire_cred_with_password(name,
password.encode('UTF-8'))
self.assertIsNotNone(imp_resp)
imp_creds, actual_mechs, output_ttl = imp_resp
self.assertIsNotNone(imp_creds)
self.assertIsInstance(imp_creds, gb.Creds)
if sys.platform == 'darwin':
self.assertIn(gb.OID.from_int_seq('1.3.6.1.5.2.5'), actual_mechs)
else:
self.assertIn(gb.MechType.kerberos, actual_mechs)
self.assertIsInstance(output_ttl, int)
@ktu.gssapi_extension_test('password_add', 'Password (add)')
def test_add_cred_with_password(self):
password = self.realm.password('user')
self.realm.kinit(self.realm.user_princ, password=password)
name = gb.import_name(b'user', gb.NameType.kerberos_principal)
input_creds = gb.Creds()
imp_resp = gb.add_cred_with_password(input_creds, name,
gb.MechType.kerberos,
password.encode('UTF-8'))
self.assertIsNotNone(imp_resp)
new_creds, actual_mechs, output_init_ttl, output_accept_ttl = imp_resp
self.assertIsInstance(new_creds, gb.Creds)
self.assertIn(gb.MechType.kerberos, actual_mechs)
self.assertIsInstance(output_init_ttl, int)
self.assertIsInstance(output_accept_ttl, int)
@ktu.gssapi_extension_test('rfc5587', 'RFC 5587')
def test_rfc5587(self):
if sys.platform == "darwin":
self.skipTest("too many edge cases on macOS")
mechs = gb.indicate_mechs_by_attrs(None, None, None)
self.assertIsInstance(mechs, set)
self.assertGreater(len(mechs), 0)
# We're validating RFC 5587 here: by iterating over all mechanisms,
# we can query their attributes and build a mapping of attr->{mechs}.
# To test indicate_mechs_by_attrs, we can use this mapping and
# ensure that, when the attribute is placed in a slot, we get the
# expected result (e.g., attr in have --> mechs are present).
attrs_dict = {}
known_attrs_dict = {}
for mech in mechs:
self.assertIsInstance(mech, gb.OID)
inquire_out = gb.inquire_attrs_for_mech(mech)
mech_attrs = inquire_out.mech_attrs
known_mech_attrs = inquire_out.known_mech_attrs
self.assertIsInstance(mech_attrs, set)
self.assertIsInstance(known_mech_attrs, set)
# Verify that we get data for every available
# attribute. Testing the contents of a few known
# attributes is done in test_display_mech_attr().
for mech_attr in mech_attrs:
self.assertIsInstance(mech_attr, gb.OID)
display_out = gb.display_mech_attr(mech_attr)
self.assertIsInstance(display_out.name, bytes)
self.assertIsInstance(display_out.short_desc, bytes)
self.assertIsInstance(display_out.long_desc, bytes)
if mech_attr not in attrs_dict:
attrs_dict[mech_attr] = set()
attrs_dict[mech_attr].add(mech)
for mech_attr in known_mech_attrs:
self.assertIsInstance(mech_attr, gb.OID)
display_out = gb.display_mech_attr(mech_attr)
self.assertIsInstance(display_out.name, bytes)
self.assertIsInstance(display_out.short_desc, bytes)
self.assertIsInstance(display_out.long_desc, bytes)
if mech_attr not in known_attrs_dict:
known_attrs_dict[mech_attr] = set()
known_attrs_dict[mech_attr].add(mech)
for attr, expected_mechs in attrs_dict.items():
attrs = set([attr])
mechs = gb.indicate_mechs_by_attrs(attrs, None, None)
self.assertGreater(len(mechs), 0)
self.assertEqual(mechs, expected_mechs)
mechs = gb.indicate_mechs_by_attrs(None, attrs, None)
for expected_mech in expected_mechs:
self.assertNotIn(expected_mech, mechs)
if self.realm.provider.lower() != 'heimdal':
# Heimdal doesn't fully implement gss_indicate_mechs_by_attrs
for attr, expected_mechs in known_attrs_dict.items():
attrs = set([attr])
mechs = gb.indicate_mechs_by_attrs(None, None, attrs)
self.assertGreater(len(mechs), 0)
self.assertEqual(mechs, expected_mechs)
@ktu.gssapi_extension_test('rfc5587', 'RFC 5587')
def test_display_mech_attr(self):
test_attrs = [
# oid, name, short_desc, long_desc
# Taken from krb5/src/tests/gssapi/t_saslname
[gb.OID.from_int_seq("1.3.6.1.5.5.13.24"),
b"GSS_C_MA_CBINDINGS", b"channel-bindings",
b"Mechanism supports channel bindings."],
[gb.OID.from_int_seq("1.3.6.1.5.5.13.1"),
b"GSS_C_MA_MECH_CONCRETE", b"concrete-mech",
b"Mechanism is neither a pseudo-mechanism nor a composite "
b"mechanism."]
]
if self.realm.provider.lower() == 'heimdal':
test_attrs[0][3] = b""
test_attrs[1][3] = b"Indicates that a mech is neither a " \
b"pseudo-mechanism nor a composite mechanism"
for attr in test_attrs:
display_out = gb.display_mech_attr(attr[0])
self.assertEqual(display_out.name, attr[1])
self.assertEqual(display_out.short_desc, attr[2])
self.assertEqual(display_out.long_desc, attr[3])
@ktu.gssapi_extension_test('rfc5801', 'SASL Names')
def test_sasl_names(self):
mechs = gb.indicate_mechs()
for mech in mechs:
out = gb.inquire_saslname_for_mech(mech)
out_smn = out.sasl_mech_name
if out_smn:
self.assertIsInstance(out_smn, bytes)
self.assertGreater(len(out_smn), 0)
out_mn = out.mech_name
self.assertIsInstance(out_mn, bytes)
out_md = out.mech_description
self.assertIsInstance(out_md, bytes)
# Heimdal fails with Unknown mech-code on sanon
if not (self.realm.provider.lower() == 'heimdal' and
mech.dotted_form == '1.3.6.1.4.1.5322.26.1.110'):
cmp_mech = gb.inquire_mech_for_saslname(out_smn)
self.assertIsNotNone(cmp_mech)
# For some reason macOS sometimes returns this for mechs
if not (sys.platform == 'darwin' and
cmp_mech.dotted_form == '1.2.752.43.14.2'):
self.assertEqual(cmp_mech, mech)
@ktu.gssapi_extension_test('rfc4178', 'Negotiation Mechanism')
def test_set_neg_mechs(self):
all_mechs = gb.indicate_mechs()
spnego_mech = gb.OID.from_int_seq("1.3.6.1.5.5.2")
krb5_mech = gb.OID.from_int_seq("1.2.840.113554.1.2.2")
ntlm_mech = gb.OID.from_int_seq("1.3.6.1.4.1.311.2.2.10")
server_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
username = gb.import_name(name=b"user",
name_type=gb.NameType.user)
krb5_client_creds = gb.acquire_cred(
None, usage='initiate',
mechs=[krb5_mech, spnego_mech]).creds
try:
ntlm_client_creds = gb.acquire_cred_with_password(
name=username,
password=b'password',
mechs=[ntlm_mech, spnego_mech]).creds
except gb.GSSError:
self.skipTest('You do not have the GSSAPI gss-ntlmssp mech '
'installed')
server_creds = gb.acquire_cred(server_name, usage='accept',
mechs=all_mechs).creds
neg_resp = gb.set_neg_mechs(server_creds, [ntlm_mech])
self.assertIsNone(neg_resp)
client_ctx_resp = gb.init_sec_context(server_name,
creds=ntlm_client_creds,
mech=spnego_mech)
client_token = client_ctx_resp.token
server_ctx_resp = gb.accept_sec_context(client_token,
acceptor_creds=server_creds)
self.assertIsNotNone(server_ctx_resp)
client_ctx_resp = gb.init_sec_context(server_name,
creds=krb5_client_creds,
mech=spnego_mech)
client_token = client_ctx_resp.token
self.assertRaises(gb.GSSError, gb.accept_sec_context, client_token,
acceptor_creds=server_creds)
neg_resp = gb.set_neg_mechs(server_creds, [krb5_mech])
self.assertIsNone(neg_resp)
client_ctx_resp = gb.init_sec_context(server_name,
creds=krb5_client_creds,
mech=spnego_mech)
client_token = client_ctx_resp.token
server_ctx_resp = gb.accept_sec_context(client_token,
acceptor_creds=server_creds)
self.assertIsNotNone(server_ctx_resp)
client_ctx_resp = gb.init_sec_context(server_name,
creds=ntlm_client_creds,
mech=spnego_mech)
client_token = client_ctx_resp.token
self.assertRaises(gb.GSSError, gb.accept_sec_context, client_token,
acceptor_creds=server_creds)
@ktu.gssapi_extension_test('ggf', 'Global Grid Forum')
@ktu.gssapi_extension_test('s4u', 'S4U')
@ktu.krb_minversion_test('1.16',
'querying impersonator name of krb5 GSS '
'Credential using the '
'GSS_KRB5_GET_CRED_IMPERSONATOR OID',
provider='mit')
def test_inquire_cred_by_oid_impersonator(self):
svc_princ = SERVICE_PRINCIPAL.decode("UTF-8")
self.realm.kinit(svc_princ, flags=['-k', '-f'])
target_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
client_token = gb.init_sec_context(target_name).token
# if our acceptor creds have a usage of both, we get
# s4u2proxy delegated credentials
server_creds = gb.acquire_cred(None, usage='both').creds
server_ctx_resp = gb.accept_sec_context(client_token,
acceptor_creds=server_creds)
self.assertIsNotNone(server_ctx_resp)
self.assertIsNotNone(server_ctx_resp.delegated_creds)
self.assertIsInstance(server_ctx_resp.delegated_creds, gb.Creds)
# GSS_KRB5_GET_CRED_IMPERSONATOR
oid = gb.OID.from_int_seq("1.2.840.113554.1.2.2.5.14")
info = gb.inquire_cred_by_oid(server_ctx_resp.delegated_creds, oid)
self.assertIsInstance(info, list)
self.assertGreater(len(info), 0)
self.assertIsInstance(info[0], bytes)
self.assertEqual(info[0], b"%s@%s" % (
SERVICE_PRINCIPAL, self.realm.realm.encode('utf-8')))
@ktu.gssapi_extension_test('ggf', 'Global Grid Forum')
def test_inquire_sec_context_by_oid(self):
target_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
ctx_resp1 = gb.init_sec_context(target_name)
server_name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
server_creds = gb.acquire_cred(server_name)[0]
server_resp = gb.accept_sec_context(ctx_resp1[3],
acceptor_creds=server_creds)
server_ctx = server_resp[0]
server_tok = server_resp[3]
client_resp2 = gb.init_sec_context(target_name,
context=ctx_resp1[0],
input_token=server_tok)
client_ctx = client_resp2[0]
# GSS_C_INQ_SSPI_SESSION_KEY
session_key_oid = gb.OID.from_int_seq("1.2.840.113554.1.2.2.5.5")
client_key = gb.inquire_sec_context_by_oid(client_ctx, session_key_oid)
server_key = gb.inquire_sec_context_by_oid(server_ctx, session_key_oid)
self.assertIsInstance(client_key, list)
self.assertGreater(len(client_key), 0)
self.assertIsInstance(server_key, list)
self.assertGreater(len(server_key), 0)
self.assertCountEqual(client_key, server_key)
@ktu.gssapi_extension_test('ggf', 'Global Grid Forum')
def test_inquire_sec_context_by_oid_should_raise_error(self):
target_name = gb.import_name(TARGET_SERVICE_NAME,
gb.NameType.hostbased_service)
ctx_resp1 = gb.init_sec_context(target_name)
server_name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
server_creds = gb.acquire_cred(server_name)[0]
server_resp = gb.accept_sec_context(ctx_resp1[3],
acceptor_creds=server_creds)
client_resp2 = gb.init_sec_context(target_name,
context=ctx_resp1[0],
input_token=server_resp[3])
client_ctx = client_resp2[0]
invalid_oid = gb.OID.from_int_seq("1.2.3.4.5.6.7.8.9")
self.assertRaises(gb.GSSError, gb.inquire_sec_context_by_oid,
client_ctx, invalid_oid)
@ktu.gssapi_extension_test('ggf', 'Global Grid Forum')
@ktu.gssapi_extension_test('password', 'Add Credential with Password')
def test_set_sec_context_option(self):
if sys.platform == 'darwin':
self.skipTest("macOS NTLM does not implement this OID")
ntlm_mech = gb.OID.from_int_seq("1.3.6.1.4.1.311.2.2.10")
username = gb.import_name(name=b"user",
name_type=gb.NameType.user)
try:
cred = gb.acquire_cred_with_password(name=username,
password=b"password",
mechs=[ntlm_mech])
except gb.GSSError:
self.skipTest('You do not have the GSSAPI gss-ntlmssp mech '
'installed')
server = gb.import_name(name=b"server",
name_type=gb.NameType.hostbased_service)
orig_context = gb.init_sec_context(server, creds=cred.creds,
mech=ntlm_mech)[0]
# GSS_NTLMSSP_RESET_CRYPTO_OID_STRING
reset_mech = gb.OID.from_int_seq("1.3.6.1.4.1.7165.655.1.3")
out_context = gb.set_sec_context_option(reset_mech,
context=orig_context,
value=b"\x00" * 4)
self.assertIsInstance(out_context, gb.SecurityContext)
@ktu.gssapi_extension_test('ggf', 'Global Grid Forum')
@ktu.gssapi_extension_test('password', 'Add Credential with Password')
def test_set_sec_context_option_fail(self):
ntlm_mech = gb.OID.from_int_seq("1.3.6.1.4.1.311.2.2.10")
username = gb.import_name(name=b"user",
name_type=gb.NameType.user)
try:
cred = gb.acquire_cred_with_password(name=username,
password=b"password",
mechs=[ntlm_mech])
except gb.GSSError:
self.skipTest('You do not have the GSSAPI gss-ntlmssp mech '
'installed')
server = gb.import_name(name=b"server",
name_type=gb.NameType.hostbased_service)
context = gb.init_sec_context(server, creds=cred.creds,
mech=ntlm_mech)[0]
# GSS_NTLMSSP_RESET_CRYPTO_OID_STRING
reset_mech = gb.OID.from_int_seq("1.3.6.1.4.1.7165.655.1.3")
# will raise a GSSError if no data was passed in
self.assertRaises(gb.GSSError, gb.set_sec_context_option, reset_mech,
context)
@ktu.gssapi_extension_test('set_cred_opt', 'Kitten Set Credential Option')
@ktu.krb_minversion_test('1.14',
'GSS_KRB5_CRED_NO_CI_FLAGS_X was added in MIT '
'krb5 1.14', provider='mit')
def test_set_cred_option(self):
name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
# GSS_KRB5_CRED_NO_CI_FLAGS_X
no_ci_flags_x = gb.OID.from_int_seq("1.2.752.43.13.29")
orig_cred = gb.acquire_cred(name).creds
# nothing much we can test here apart from it doesn't fail and the
# id of the return cred is the same as the input one
output_cred = gb.set_cred_option(no_ci_flags_x, creds=orig_cred)
self.assertIsInstance(output_cred, gb.Creds)
@ktu.gssapi_extension_test('set_cred_opt', 'Kitten Set Credential Option')
def test_set_cred_option_should_raise_error(self):
name = gb.import_name(SERVICE_PRINCIPAL,
gb.NameType.kerberos_principal)
orig_cred = gb.acquire_cred(name).creds
# this is a fake OID and shouldn't work at all
invalid_oid = gb.OID.from_int_seq("1.2.3.4.5.6.7.8.9")
self.assertRaises(gb.GSSError, gb.set_cred_option, invalid_oid,
orig_cred, b"\x00")
@ktu.gssapi_extension_test('krb5', 'Kerberos Extensions')
@ktu.krb_provider_test(['mit'], 'Cannot revert ccache on Heimdal')
# https://github.com/heimdal/heimdal/issues/803
def test_krb5_ccache_name(self):
provider = self.realm.provider.lower()
new_ccache = os.path.join(self.realm.tmpdir, 'ccache-new')
new_env = self.realm.env.copy()
new_env['KRB5CCNAME'] = new_ccache
self.realm.kinit(self.realm.user_princ,
password=self.realm.password('user'),
env=new_env)
old_ccache = gb.krb5_ccache_name(new_ccache.encode('utf-8'))
try:
if provider == 'heimdal':
# Heimdal never returns the old name - see above link
self.assertTrue(old_ccache is None)
else:
self.assertEqual(old_ccache.decode('utf-8'), self.realm.ccache)
cred_resp = gb.acquire_cred(usage='initiate').creds
princ_name = gb.inquire_cred(cred_resp, name=True).name
name = gb.display_name(princ_name, name_type=False).name
self.assertEqual(name, self.realm.user_princ.encode('utf-8'))
if provider != 'heimdal':