diff options
Diffstat (limited to 'tests/http/federation/test_matrix_federation_agent.py')
| -rw-r--r-- | tests/http/federation/test_matrix_federation_agent.py | 169 |
1 files changed, 159 insertions, 10 deletions
diff --git a/tests/http/federation/test_matrix_federation_agent.py b/tests/http/federation/test_matrix_federation_agent.py index 05880a1048..ecce473b01 100644 --- a/tests/http/federation/test_matrix_federation_agent.py +++ b/tests/http/federation/test_matrix_federation_agent.py @@ -17,12 +17,14 @@ import logging from mock import Mock import treq +from service_identity import VerificationError from zope.interface import implementer from twisted.internet import defer from twisted.internet._sslverify import ClientTLSOptions, OpenSSLCertificateOptions from twisted.internet.protocol import Factory from twisted.protocols.tls import TLSMemoryBIOFactory +from twisted.web._newclient import ResponseNeverReceived from twisted.web.http import HTTPChannel from twisted.web.http_headers import Headers from twisted.web.iweb import IPolicyForHTTPS @@ -37,13 +39,29 @@ from synapse.http.federation.srv_resolver import Server from synapse.util.caches.ttlcache import TTLCache from synapse.util.logcontext import LoggingContext -from tests.http import ServerTLSContext +from tests.http import TestServerTLSConnectionFactory, get_test_ca_cert_file from tests.server import FakeTransport, ThreadedMemoryReactorClock from tests.unittest import TestCase from tests.utils import default_config logger = logging.getLogger(__name__) +test_server_connection_factory = None + + +def get_connection_factory(): + # this needs to happen once, but not until we are ready to run the first test + global test_server_connection_factory + if test_server_connection_factory is None: + test_server_connection_factory = TestServerTLSConnectionFactory(sanlist=[ + b'DNS:testserv', + b'DNS:target-server', + b'DNS:xn--bcher-kva.com', + b'IP:1.2.3.4', + b'IP:::1', + ]) + return test_server_connection_factory + class MatrixFederationAgentTests(TestCase): def setUp(self): @@ -53,12 +71,11 @@ class MatrixFederationAgentTests(TestCase): self.well_known_cache = TTLCache("test_cache", timer=self.reactor.seconds) - # for now, we disable cert verification for the test, since the cert we - # present will not be trusted. We should do better here, though. config_dict = default_config("test", parse=False) - config_dict["federation_verify_certificates"] = False - config_dict["trusted_key_servers"] = [] - config = HomeServerConfig() + config_dict["federation_custom_ca_list"] = [get_test_ca_cert_file()] + # config_dict["trusted_key_servers"] = [] + + self._config = config = HomeServerConfig() config.parse_config_dict(config_dict) self.agent = MatrixFederationAgent( @@ -77,7 +94,7 @@ class MatrixFederationAgentTests(TestCase): """ # build the test server - server_tls_protocol = _build_test_server() + server_tls_protocol = _build_test_server(get_connection_factory()) # now, tell the client protocol factory to build the client protocol (it will be a # _WrappingProtocol, around a TLSMemoryBIOProtocol, around an @@ -328,6 +345,88 @@ class MatrixFederationAgentTests(TestCase): self.reactor.pump((0.1,)) self.successResultOf(test_d) + def test_get_hostname_bad_cert(self): + """ + Test the behaviour when the certificate on the server doesn't match the hostname + """ + self.mock_resolver.resolve_service.side_effect = lambda _: [] + self.reactor.lookups["testserv1"] = "1.2.3.4" + + test_d = self._make_get_request(b"matrix://testserv1/foo/bar") + + # Nothing happened yet + self.assertNoResult(test_d) + + # No SRV record lookup yet + self.mock_resolver.resolve_service.assert_not_called() + + # there should be an attempt to connect on port 443 for the .well-known + clients = self.reactor.tcpClients + self.assertEqual(len(clients), 1) + (host, port, client_factory, _timeout, _bindAddress) = clients[0] + self.assertEqual(host, '1.2.3.4') + self.assertEqual(port, 443) + + # fonx the connection + client_factory.clientConnectionFailed(None, Exception("nope")) + + # attemptdelay on the hostnameendpoint is 0.3, so takes that long before the + # .well-known request fails. + self.reactor.pump((0.4,)) + + # now there should be a SRV lookup + self.mock_resolver.resolve_service.assert_called_once_with( + b"_matrix._tcp.testserv1" + ) + + # we should fall back to a direct connection + self.assertEqual(len(clients), 2) + (host, port, client_factory, _timeout, _bindAddress) = clients[1] + self.assertEqual(host, '1.2.3.4') + self.assertEqual(port, 8448) + + # make a test server, and wire up the client + http_server = self._make_connection(client_factory, expected_sni=b'testserv1') + + # there should be no requests + self.assertEqual(len(http_server.requests), 0) + + # ... and the request should have failed + e = self.failureResultOf(test_d, ResponseNeverReceived) + failure_reason = e.value.reasons[0] + self.assertIsInstance(failure_reason.value, VerificationError) + + def test_get_ip_address_bad_cert(self): + """ + Test the behaviour when the server name contains an explicit IP, but + the server cert doesn't cover it + """ + # there will be a getaddrinfo on the IP + self.reactor.lookups["1.2.3.5"] = "1.2.3.5" + + test_d = self._make_get_request(b"matrix://1.2.3.5/foo/bar") + + # Nothing happened yet + self.assertNoResult(test_d) + + # Make sure treq is trying to connect + clients = self.reactor.tcpClients + self.assertEqual(len(clients), 1) + (host, port, client_factory, _timeout, _bindAddress) = clients[0] + self.assertEqual(host, '1.2.3.5') + self.assertEqual(port, 8448) + + # make a test server, and wire up the client + http_server = self._make_connection(client_factory, expected_sni=None) + + # there should be no requests + self.assertEqual(len(http_server.requests), 0) + + # ... and the request should have failed + e = self.failureResultOf(test_d, ResponseNeverReceived) + failure_reason = e.value.reasons[0] + self.assertIsInstance(failure_reason.value, VerificationError) + def test_get_no_srv_no_well_known(self): """ Test the behaviour when the server name has no port, no SRV, and no well-known @@ -585,6 +684,49 @@ class MatrixFederationAgentTests(TestCase): self.reactor.pump((0.1,)) self.successResultOf(test_d) + def test_get_well_known_unsigned_cert(self): + """Test the behaviour when the .well-known server presents a cert + not signed by a CA + """ + + # we use the same test server as the other tests, but use an agent + # with _well_known_tls_policy left to the default, which will not + # trust it (since the presented cert is signed by a test CA) + + self.mock_resolver.resolve_service.side_effect = lambda _: [] + self.reactor.lookups["testserv"] = "1.2.3.4" + + agent = MatrixFederationAgent( + reactor=self.reactor, + tls_client_options_factory=ClientTLSOptionsFactory(self._config), + _srv_resolver=self.mock_resolver, + _well_known_cache=self.well_known_cache, + ) + + test_d = agent.request(b"GET", b"matrix://testserv/foo/bar") + + # Nothing happened yet + self.assertNoResult(test_d) + + # there should be an attempt to connect on port 443 for the .well-known + clients = self.reactor.tcpClients + self.assertEqual(len(clients), 1) + (host, port, client_factory, _timeout, _bindAddress) = clients[0] + self.assertEqual(host, '1.2.3.4') + self.assertEqual(port, 443) + + http_proto = self._make_connection( + client_factory, expected_sni=b"testserv", + ) + + # there should be no requests + self.assertEqual(len(http_proto.requests), 0) + + # and there should be a SRV lookup instead + self.mock_resolver.resolve_service.assert_called_once_with( + b"_matrix._tcp.testserv" + ) + def test_get_hostname_srv(self): """ Test the behaviour when there is a single SRV record @@ -918,11 +1060,17 @@ def _check_logcontext(context): raise AssertionError("Expected logcontext %s but was %s" % (context, current)) -def _build_test_server(): +def _build_test_server(connection_creator): """Construct a test server This builds an HTTP channel, wrapped with a TLSMemoryBIOProtocol + Args: + connection_creator (IOpenSSLServerConnectionCreator): thing to build + SSL connections + sanlist (list[bytes]): list of the SAN entries for the cert returned + by the server + Returns: TLSMemoryBIOProtocol """ @@ -931,7 +1079,7 @@ def _build_test_server(): server_factory.log = _log_request server_tls_factory = TLSMemoryBIOFactory( - ServerTLSContext(), isClient=False, wrappedFactory=server_factory + connection_creator, isClient=False, wrappedFactory=server_factory ) return server_tls_factory.buildProtocol(None) @@ -944,7 +1092,8 @@ def _log_request(request): @implementer(IPolicyForHTTPS) class TrustingTLSPolicyForHTTPS(object): - """An IPolicyForHTTPS which doesn't do any certificate verification""" + """An IPolicyForHTTPS which checks that the certificate belongs to the + right server, but doesn't check the certificate chain.""" def creatorForNetloc(self, hostname, port): certificateOptions = OpenSSLCertificateOptions() |