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send SNI for federation requests

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This commit is contained in:
Jeroen 2018-06-24 22:38:43 +02:00
parent 1d009013b3
commit 3d605853c8
15 changed files with 71 additions and 13 deletions
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2
synapse/app/client_reader.py
View file

@ -153,11 +153,13 @@ def start(config_options):
database_engine = create_engine(config.database_config)
tls_server_context_factory = context_factory.ServerContextFactory(config)
tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
ss = ClientReaderServer(
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
tls_client_options_factory=tls_client_options_factory,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,

2
synapse/app/event_creator.py
View file

@ -171,11 +171,13 @@ def start(config_options):
database_engine = create_engine(config.database_config)
tls_server_context_factory = context_factory.ServerContextFactory(config)
tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
ss = EventCreatorServer(
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
tls_client_options_factory=tls_client_options_factory,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,

2
synapse/app/federation_reader.py
View file

@ -142,11 +142,13 @@ def start(config_options):
database_engine = create_engine(config.database_config)
tls_server_context_factory = context_factory.ServerContextFactory(config)
tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
ss = FederationReaderServer(
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
tls_client_options_factory=tls_client_options_factory,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,

2
synapse/app/federation_sender.py
View file

@ -185,11 +185,13 @@ def start(config_options):
config.send_federation = True
tls_server_context_factory = context_factory.ServerContextFactory(config)
tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
ps = FederationSenderServer(
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
tls_client_options_factory=tls_client_options_factory,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,

2
synapse/app/frontend_proxy.py
View file

@ -209,11 +209,13 @@ def start(config_options):
database_engine = create_engine(config.database_config)
tls_server_context_factory = context_factory.ServerContextFactory(config)
tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
ss = FrontendProxyServer(
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
tls_client_options_factory=tls_client_options_factory,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,

2
synapse/app/homeserver.py
View file

@ -321,6 +321,7 @@ def setup(config_options):
events.USE_FROZEN_DICTS = config.use_frozen_dicts
tls_server_context_factory = context_factory.ServerContextFactory(config)
tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
database_engine = create_engine(config.database_config)
config.database_config["args"]["cp_openfun"] = database_engine.on_new_connection
@ -329,6 +330,7 @@ def setup(config_options):
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
tls_client_options_factory=tls_client_options_factory,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,

2
synapse/app/media_repository.py
View file

@ -156,11 +156,13 @@ def start(config_options):
database_engine = create_engine(config.database_config)
tls_server_context_factory = context_factory.ServerContextFactory(config)
tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
ss = MediaRepositoryServer(
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
tls_client_options_factory=tls_client_options_factory,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,

2
synapse/app/user_dir.py
View file

@ -213,11 +213,13 @@ def start(config_options):
config.update_user_directory = True
tls_server_context_factory = context_factory.ServerContextFactory(config)
tls_client_options_factory = context_factory.ClientTLSOptionsFactory(config)
ps = UserDirectoryServer(
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
tls_client_options_factory=tls_client_options_factory,
config=config,
version_string="Synapse/" + get_version_string(synapse),
database_engine=database_engine,

9
synapse/config/tls.py
View file

@ -47,6 +47,8 @@ class TlsConfig(Config):
self.tls_fingerprints = config["tls_fingerprints"]
self.tls_ignore_certificate_validation = config.get("tls_ignore_certificate_validation", False)
# Check that our own certificate is included in the list of fingerprints
# and include it if it is not.
x509_certificate_bytes = crypto.dump_certificate(
@ -73,6 +75,8 @@ class TlsConfig(Config):
tls_private_key_path = base_key_name + ".tls.key"
tls_dh_params_path = base_key_name + ".tls.dh"
tls_ignore_certificate_validation = False
return """\
# PEM encoded X509 certificate for TLS.
# You can replace the self-signed certificate that synapse
@ -117,6 +121,11 @@ class TlsConfig(Config):
#
tls_fingerprints: []
# tls_fingerprints: [{"sha256": "<base64_encoded_sha256_fingerprint>"}]
# Ignore certificate validation for TLS client connections to other
# homeservers using federation. Don't enable this in a production
# environment, unless you know what you are doing!
tls_ignore_certificate_validation: %(tls_ignore_certificate_validation)s
""" % locals()
def read_tls_certificate(self, cert_path):

34
synapse/crypto/context_factory.py
View file

@ -14,7 +14,8 @@
from twisted.internet import ssl
from OpenSSL import SSL, crypto
from twisted.internet._sslverify import _defaultCurveName
from twisted.internet._sslverify import _defaultCurveName, ClientTLSOptions, OpenSSLCertificateOptions, \
optionsForClientTLS
import logging
@ -48,3 +49,34 @@ class ServerContextFactory(ssl.ContextFactory):
def getContext(self):
return self._context
class ClientTLSOptionsNoCertVerification(ClientTLSOptions):
"""Redefinition of ClientTLSOptions to completely ignore certificate
validation. Should be kept in sync with the original class in Twisted.
This version of ClientTLSOptions is only intended for development use."""
def __init__(self, *args, **kwargs):
super(ClientTLSOptionsNoCertVerification, self).__init__(*args, **kwargs)
def do_nothing(*_args, **_kwargs):
pass
self._ctx.set_info_callback(do_nothing)
class ClientTLSOptionsFactory(object):
"""Factory for Twisted ClientTLSOptions that are used to make connections
to remote servers for federation."""
def __init__(self, config):
self._ignore_certificate_validation = config.tls_ignore_certificate_validation
def get_options(self, host):
if self._ignore_certificate_validation:
return ClientTLSOptionsNoCertVerification(
unicode(host),
OpenSSLCertificateOptions(verify=False).getContext()
)
else:
return optionsForClientTLS(unicode(host))

4
synapse/crypto/keyclient.py
View file

@ -28,14 +28,14 @@ KEY_API_V1 = b"/_matrix/key/v1/"
@defer.inlineCallbacks
def fetch_server_key(server_name, ssl_context_factory, path=KEY_API_V1):
def fetch_server_key(server_name, tls_client_options_factory, path=KEY_API_V1):
"""Fetch the keys for a remote server."""
factory = SynapseKeyClientFactory()
factory.path = path
factory.host = server_name
endpoint = matrix_federation_endpoint(
reactor, server_name, ssl_context_factory, timeout=30
reactor, server_name, tls_client_options_factory, timeout=30
)
for i in range(5):

4
synapse/crypto/keyring.py
View file

@ -510,7 +510,7 @@ class Keyring(object):
continue
(response, tls_certificate) = yield fetch_server_key(
server_name, self.hs.tls_server_context_factory,
server_name, self.tls_client_options_factory,
path=(b"/_matrix/key/v2/server/%s" % (
urllib.quote(requested_key_id),
)).encode("ascii"),
@ -653,7 +653,7 @@ class Keyring(object):
# Try to fetch the key from the remote server.
(response, tls_certificate) = yield fetch_server_key(
server_name, self.hs.tls_server_context_factory
server_name, self.hs.tls_client_options_factory
)
# Check the response.

11
synapse/http/endpoint.py
View file

@ -26,7 +26,6 @@ import time
logger = logging.getLogger(__name__)
SERVER_CACHE = {}
# our record of an individual server which can be tried to reach a destination.
@ -38,15 +37,15 @@ _Server = collections.namedtuple(
)
def matrix_federation_endpoint(reactor, destination, ssl_context_factory=None,
def matrix_federation_endpoint(reactor, destination, tls_client_options_factory=None,
timeout=None):
"""Construct an endpoint for the given matrix destination.
Args:
reactor: Twisted reactor.
destination (bytes): The name of the server to connect to.
ssl_context_factory (twisted.internet.ssl.ContextFactory): Factory
which generates SSL contexts to use for TLS.
tls_client_options_factory (synapse.crypto.context_factory.ClientTLSOptionsFactory):
Factory which generates TLS options for client connections.
timeout (int): connection timeout in seconds
"""
@ -59,13 +58,13 @@ def matrix_federation_endpoint(reactor, destination, ssl_context_factory=None,
if timeout is not None:
endpoint_kw_args.update(timeout=timeout)
if ssl_context_factory is None:
if tls_client_options_factory is None:
transport_endpoint = HostnameEndpoint
default_port = 8008
else:
def transport_endpoint(reactor, host, port, timeout):
return wrapClientTLS(
ssl_context_factory,
tls_client_options_factory.get_options(unicode(host)),
HostnameEndpoint(reactor, host, port, timeout=timeout))
default_port = 8448

4
synapse/http/matrixfederationclient.py
View file

@ -62,14 +62,14 @@ MAX_SHORT_RETRIES = 3
class MatrixFederationEndpointFactory(object):
def __init__(self, hs):
self.tls_server_context_factory = hs.tls_server_context_factory
self.tls_client_options_factory = hs.tls_client_options_factory
def endpointForURI(self, uri):
destination = uri.netloc
return matrix_federation_endpoint(
reactor, destination, timeout=10,
ssl_context_factory=self.tls_server_context_factory
tls_client_options_factory = self.tls_client_options_factory
)

2
tests/utils.py
View file

@ -114,6 +114,7 @@ def setup_test_homeserver(name="test", datastore=None, config=None, reactor=None
database_engine=db_engine,
room_list_handler=object(),
tls_server_context_factory=Mock(),
tls_client_options_factory=Mock(),
reactor=reactor,
**kargs
)
@ -134,6 +135,7 @@ def setup_test_homeserver(name="test", datastore=None, config=None, reactor=None
database_engine=db_engine,
room_list_handler=object(),
tls_server_context_factory=Mock(),
tls_client_options_factory=Mock(),
**kargs
)