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8a96359977
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14106 Pair-Programmed-With: Andreas Schneider <asn@samba.org> Signed-off-by: Isaac Boukris <iboukris@gmail.com> Signed-off-by: Andreas Schneider <asn@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
233 lines
8.9 KiB
Python
233 lines
8.9 KiB
Python
# Unix SMB/CIFS implementation.
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# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2009
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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"""Tests for GENSEC.
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Note that this just tests the bindings work. It does not intend to test
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the functionality, that's already done in other tests.
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"""
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from samba.credentials import Credentials
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from samba import gensec, auth
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import samba.tests
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class GensecTests(samba.tests.TestCase):
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def setUp(self):
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super(GensecTests, self).setUp()
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self.settings = {}
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self.settings["lp_ctx"] = self.lp_ctx = samba.tests.env_loadparm()
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self.settings["target_hostname"] = self.lp_ctx.get("netbios name")
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self.lp_ctx.set("spnego:simulate_w2k", "no")
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"""This is just for the API tests"""
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self.gensec = gensec.Security.start_client(self.settings)
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def test_start_mech_by_unknown_name(self):
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self.assertRaises(RuntimeError, self.gensec.start_mech_by_name, "foo")
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def test_start_mech_by_name(self):
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self.gensec.start_mech_by_name("spnego")
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def test_info_uninitialized(self):
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self.assertRaises(RuntimeError, self.gensec.session_info)
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def _test_update(self, mech, client_mech=None, client_only_opt=None):
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"""Test GENSEC by doing an exchange with ourselves using GSSAPI against a KDC"""
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"""Start up a client and server GENSEC instance to test things with"""
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if client_only_opt:
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orig_client_opt = self.lp_ctx.get(client_only_opt)
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if not orig_client_opt:
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orig_client_opt = ''
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self.lp_ctx.set(client_only_opt, "yes")
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self.gensec_client = gensec.Security.start_client(self.settings)
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self.gensec_client.set_credentials(self.get_credentials())
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self.gensec_client.want_feature(gensec.FEATURE_SEAL)
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if client_mech is not None:
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self.gensec_client.start_mech_by_name(client_mech)
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else:
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self.gensec_client.start_mech_by_sasl_name(mech)
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if client_only_opt:
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self.lp_ctx.set(client_only_opt, "no")
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self.gensec_server = gensec.Security.start_server(settings=self.settings,
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auth_context=auth.AuthContext(lp_ctx=self.lp_ctx))
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creds = Credentials()
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creds.guess(self.lp_ctx)
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creds.set_machine_account(self.lp_ctx)
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self.gensec_server.set_credentials(creds)
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self.gensec_server.want_feature(gensec.FEATURE_SEAL)
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self.gensec_server.start_mech_by_sasl_name(mech)
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client_finished = False
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server_finished = False
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server_to_client = b""
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client_to_server = b""
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"""Run the actual call loop"""
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while True:
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if not client_finished:
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if client_only_opt:
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self.lp_ctx.set(client_only_opt, "yes")
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print("running client gensec_update")
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try:
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(client_finished, client_to_server) = self.gensec_client.update(server_to_client)
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except samba.NTSTATUSError as nt:
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raise AssertionError(nt)
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if client_only_opt:
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self.lp_ctx.set(client_only_opt, "no")
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if not server_finished:
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print("running server gensec_update")
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try:
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(server_finished, server_to_client) = self.gensec_server.update(client_to_server)
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except samba.NTSTATUSError as nt:
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raise AssertionError(nt)
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if client_finished and server_finished:
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break
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if client_only_opt:
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self.lp_ctx.set(client_only_opt, orig_client_opt)
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self.assertTrue(server_finished)
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self.assertTrue(client_finished)
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session_info = self.gensec_server.session_info()
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test_bytes = b"Hello Server"
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try:
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test_wrapped = self.gensec_client.wrap(test_bytes)
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test_unwrapped = self.gensec_server.unwrap(test_wrapped)
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except samba.NTSTATUSError as e:
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self.fail(str(e))
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self.assertEqual(test_bytes, test_unwrapped)
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test_bytes = b"Hello Client"
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test_wrapped = self.gensec_server.wrap(test_bytes)
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test_unwrapped = self.gensec_client.unwrap(test_wrapped)
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self.assertEqual(test_bytes, test_unwrapped)
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client_session_key = self.gensec_client.session_key()
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server_session_key = self.gensec_server.session_key()
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self.assertEqual(client_session_key, server_session_key)
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def test_update(self):
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self._test_update("GSSAPI")
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def test_update_spnego(self):
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self._test_update("GSS-SPNEGO")
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def test_update_spnego_downgrade(self):
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self._test_update("GSS-SPNEGO", "spnego", "gensec:gssapi_krb5")
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def test_update_no_optimistic_spnego(self):
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self._test_update("GSS-SPNEGO", "spnego", "spnego:client_no_optimistic")
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def test_update_w2k_spnego_client(self):
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self.lp_ctx.set("spnego:simulate_w2k", "yes")
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# Re-start the client with this set
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self.gensec = gensec.Security.start_client(self.settings)
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# Unset it for the server
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self.lp_ctx.set("spnego:simulate_w2k", "no")
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self._test_update("GSS-SPNEGO")
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def test_update_w2k_spnego_server(self):
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# Re-start the client with this set
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self.gensec = gensec.Security.start_client(self.settings)
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# Unset it for the server
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self.lp_ctx.set("spnego:simulate_w2k", "yes")
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self._test_update("GSS-SPNEGO")
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def test_update_w2k_spnego(self):
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self.lp_ctx.set("spnego:simulate_w2k", "no")
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# Re-start the client with this set
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self.gensec = gensec.Security.start_client(self.settings)
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self._test_update("GSS-SPNEGO")
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def test_update_gss_krb5_to_spnego(self):
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self._test_update("GSS-SPNEGO", "gssapi_krb5")
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def test_update_ntlmssp_to_spnego(self):
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self._test_update("GSS-SPNEGO", "ntlmssp")
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def test_max_update_size(self):
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"""Test GENSEC by doing an exchange with ourselves using GSSAPI against a KDC"""
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"""Start up a client and server GENSEC instance to test things with"""
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self.gensec_client = gensec.Security.start_client(self.settings)
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self.gensec_client.set_credentials(self.get_credentials())
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self.gensec_client.want_feature(gensec.FEATURE_SIGN)
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self.gensec_client.set_max_update_size(5)
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self.gensec_client.start_mech_by_name("spnego")
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self.gensec_server = gensec.Security.start_server(settings=self.settings,
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auth_context=auth.AuthContext(lp_ctx=self.lp_ctx))
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creds = Credentials()
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creds.guess(self.lp_ctx)
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creds.set_machine_account(self.lp_ctx)
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self.gensec_server.set_credentials(creds)
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self.gensec_server.want_feature(gensec.FEATURE_SIGN)
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self.gensec_server.set_max_update_size(5)
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self.gensec_server.start_mech_by_name("spnego")
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client_finished = False
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server_finished = False
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server_to_client = b""
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"""Run the actual call loop"""
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i = 0
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while not client_finished or not server_finished:
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i += 1
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if not client_finished:
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print("running client gensec_update: %d: %r" % (len(server_to_client), server_to_client))
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(client_finished, client_to_server) = self.gensec_client.update(server_to_client)
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if not server_finished:
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print("running server gensec_update: %d: %r" % (len(client_to_server), client_to_server))
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(server_finished, server_to_client) = self.gensec_server.update(client_to_server)
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"""Here we expect a lot more than the typical 1 or 2 roundtrips"""
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self.assertTrue(i > 10)
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session_info = self.gensec_server.session_info()
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test_bytes = b"Hello Server"
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test_wrapped = self.gensec_client.wrap(test_bytes)
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test_unwrapped = self.gensec_server.unwrap(test_wrapped)
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self.assertEqual(test_bytes, test_unwrapped)
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test_bytes = b"Hello Client"
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test_wrapped = self.gensec_server.wrap(test_bytes)
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test_unwrapped = self.gensec_client.unwrap(test_wrapped)
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self.assertEqual(test_bytes, test_unwrapped)
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client_session_key = self.gensec_client.session_key()
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server_session_key = self.gensec_server.session_key()
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self.assertEqual(client_session_key, server_session_key)
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