diff options
| -rw-r--r-- | changelog.d/3569.bugfix | 1 | ||||
| -rw-r--r-- | synapse/api/auth.py | 4 | ||||
| -rw-r--r-- | synapse/federation/transport/server.py | 2 | ||||
| -rw-r--r-- | synapse/handlers/auth.py | 29 | ||||
| -rw-r--r-- | synapse/handlers/register.py | 2 | ||||
| -rw-r--r-- | synapse/http/server.py | 35 | ||||
| -rw-r--r-- | synapse/http/servlet.py | 10 | ||||
| -rw-r--r-- | synapse/rest/client/v1/admin.py | 22 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/register.py | 12 | ||||
| -rw-r--r-- | synapse/rest/media/v1/media_storage.py | 2 | ||||
| -rw-r--r-- | synapse/state.py | 2 | ||||
| -rw-r--r-- | synapse/storage/events.py | 14 | ||||
| -rw-r--r-- | synapse/storage/signatures.py | 2 | ||||
| -rw-r--r-- | synapse/types.py | 2 | ||||
| -rw-r--r-- | synapse/util/frozenutils.py | 6 | ||||
| -rw-r--r-- | tests/api/test_auth.py | 35 | ||||
| -rw-r--r-- | tests/utils.py | 9 |
17 files changed, 122 insertions, 67 deletions
diff --git a/changelog.d/3569.bugfix b/changelog.d/3569.bugfix new file mode 100644 index 0000000000..d77f035ee0 --- /dev/null +++ b/changelog.d/3569.bugfix @@ -0,0 +1 @@ +Unicode passwords are now normalised before hashing, preventing the instance where two different devices or browsers might send a different UTF-8 sequence for the password. diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 073229b4c4..5bbbe8e2e7 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -252,10 +252,10 @@ class Auth(object): if ip_address not in app_service.ip_range_whitelist: defer.returnValue((None, None)) - if "user_id" not in request.args: + if b"user_id" not in request.args: defer.returnValue((app_service.sender, app_service)) - user_id = request.args["user_id"][0] + user_id = request.args[b"user_id"][0].decode('utf8') if app_service.sender == user_id: defer.returnValue((app_service.sender, app_service)) diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py index 3b5ea9515a..eae5f2b427 100644 --- a/synapse/federation/transport/server.py +++ b/synapse/federation/transport/server.py @@ -165,7 +165,7 @@ def _parse_auth_header(header_bytes): param_dict = dict(kv.split("=") for kv in params) def strip_quotes(value): - if value.startswith(b"\""): + if value.startswith("\""): return value[1:-1] else: return value diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py index 402e44cdef..5d03bfa5f7 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -15,6 +15,7 @@ # limitations under the License. import logging +import unicodedata import attr import bcrypt @@ -626,6 +627,7 @@ class AuthHandler(BaseHandler): # special case to check for "password" for the check_password interface # for the auth providers password = login_submission.get("password") + if login_type == LoginType.PASSWORD: if not self._password_enabled: raise SynapseError(400, "Password login has been disabled.") @@ -707,9 +709,10 @@ class AuthHandler(BaseHandler): multiple inexact matches. Args: - user_id (str): complete @user:id + user_id (unicode): complete @user:id + password (unicode): the provided password Returns: - (str) the canonical_user_id, or None if unknown user / bad password + (unicode) the canonical_user_id, or None if unknown user / bad password """ lookupres = yield self._find_user_id_and_pwd_hash(user_id) if not lookupres: @@ -849,14 +852,19 @@ class AuthHandler(BaseHandler): """Computes a secure hash of password. Args: - password (str): Password to hash. + password (unicode): Password to hash. Returns: - Deferred(str): Hashed password. + Deferred(unicode): Hashed password. """ def _do_hash(): - return bcrypt.hashpw(password.encode('utf8') + self.hs.config.password_pepper, - bcrypt.gensalt(self.bcrypt_rounds)) + # Normalise the Unicode in the password + pw = unicodedata.normalize("NFKC", password) + + return bcrypt.hashpw( + pw.encode('utf8') + self.hs.config.password_pepper.encode("utf8"), + bcrypt.gensalt(self.bcrypt_rounds), + ).decode('ascii') return make_deferred_yieldable( threads.deferToThreadPool( @@ -868,16 +876,19 @@ class AuthHandler(BaseHandler): """Validates that self.hash(password) == stored_hash. Args: - password (str): Password to hash. - stored_hash (str): Expected hash value. + password (unicode): Password to hash. + stored_hash (unicode): Expected hash value. Returns: Deferred(bool): Whether self.hash(password) == stored_hash. """ def _do_validate_hash(): + # Normalise the Unicode in the password + pw = unicodedata.normalize("NFKC", password) + return bcrypt.checkpw( - password.encode('utf8') + self.hs.config.password_pepper, + pw.encode('utf8') + self.hs.config.password_pepper.encode("utf8"), stored_hash.encode('utf8') ) diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py index 7caff0cbc8..234f8e8019 100644 --- a/synapse/handlers/register.py +++ b/synapse/handlers/register.py @@ -131,7 +131,7 @@ class RegistrationHandler(BaseHandler): Args: localpart : The local part of the user ID to register. If None, one will be generated. - password (str) : The password to assign to this user so they can + password (unicode) : The password to assign to this user so they can login again. This can be None which means they cannot login again via a password (e.g. the user is an application service user). generate_token (bool): Whether a new access token should be diff --git a/synapse/http/server.py b/synapse/http/server.py index c70fdbdfd2..1940c1c4f4 100644 --- a/synapse/http/server.py +++ b/synapse/http/server.py @@ -13,12 +13,13 @@ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. + import cgi import collections import logging -import urllib -from six.moves import http_client +from six import PY3 +from six.moves import http_client, urllib from canonicaljson import encode_canonical_json, encode_pretty_printed_json, json @@ -264,6 +265,7 @@ class JsonResource(HttpServer, resource.Resource): self.hs = hs def register_paths(self, method, path_patterns, callback): + method = method.encode("utf-8") # method is bytes on py3 for path_pattern in path_patterns: logger.debug("Registering for %s %s", method, path_pattern.pattern) self.path_regexs.setdefault(method, []).append( @@ -296,8 +298,19 @@ class JsonResource(HttpServer, resource.Resource): # here. If it throws an exception, that is handled by the wrapper # installed by @request_handler. + def _unquote(s): + if PY3: + # On Python 3, unquote is unicode -> unicode + return urllib.parse.unquote(s) + else: + # On Python 2, unquote is bytes -> bytes We need to encode the + # URL again (as it was decoded by _get_handler_for request), as + # ASCII because it's a URL, and then decode it to get the UTF-8 + # characters that were quoted. + return urllib.parse.unquote(s.encode('ascii')).decode('utf8') + kwargs = intern_dict({ - name: urllib.unquote(value).decode("UTF-8") if value else value + name: _unquote(value) if value else value for name, value in group_dict.items() }) @@ -313,9 +326,9 @@ class JsonResource(HttpServer, resource.Resource): request (twisted.web.http.Request): Returns: - Tuple[Callable, dict[str, str]]: callback method, and the dict - mapping keys to path components as specified in the handler's - path match regexp. + Tuple[Callable, dict[unicode, unicode]]: callback method, and the + dict mapping keys to path components as specified in the + handler's path match regexp. The callback will normally be a method registered via register_paths, so will return (possibly via Deferred) either @@ -327,7 +340,7 @@ class JsonResource(HttpServer, resource.Resource): # Loop through all the registered callbacks to check if the method # and path regex match for path_entry in self.path_regexs.get(request.method, []): - m = path_entry.pattern.match(request.path) + m = path_entry.pattern.match(request.path.decode('ascii')) if m: # We found a match! return path_entry.callback, m.groupdict() @@ -383,7 +396,7 @@ class RootRedirect(resource.Resource): self.url = path def render_GET(self, request): - return redirectTo(self.url, request) + return redirectTo(self.url.encode('ascii'), request) def getChild(self, name, request): if len(name) == 0: @@ -404,12 +417,14 @@ def respond_with_json(request, code, json_object, send_cors=False, return if pretty_print: - json_bytes = encode_pretty_printed_json(json_object) + "\n" + json_bytes = (encode_pretty_printed_json(json_object) + "\n" + ).encode("utf-8") else: if canonical_json or synapse.events.USE_FROZEN_DICTS: + # canonicaljson already encodes to bytes json_bytes = encode_canonical_json(json_object) else: - json_bytes = json.dumps(json_object) + json_bytes = json.dumps(json_object).encode("utf-8") return respond_with_json_bytes( request, code, json_bytes, diff --git a/synapse/http/servlet.py b/synapse/http/servlet.py index 882816dc8f..69f7085291 100644 --- a/synapse/http/servlet.py +++ b/synapse/http/servlet.py @@ -171,8 +171,16 @@ def parse_json_value_from_request(request, allow_empty_body=False): if not content_bytes and allow_empty_body: return None + # Decode to Unicode so that simplejson will return Unicode strings on + # Python 2 try: - content = json.loads(content_bytes) + content_unicode = content_bytes.decode('utf8') + except UnicodeDecodeError: + logger.warn("Unable to decode UTF-8") + raise SynapseError(400, "Content not JSON.", errcode=Codes.NOT_JSON) + + try: + content = json.loads(content_unicode) except Exception as e: logger.warn("Unable to parse JSON: %s", e) raise SynapseError(400, "Content not JSON.", errcode=Codes.NOT_JSON) diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/client/v1/admin.py index 99f6c6e3c3..80d625eecc 100644 --- a/synapse/rest/client/v1/admin.py +++ b/synapse/rest/client/v1/admin.py @@ -18,6 +18,7 @@ import hashlib import hmac import logging +from six import text_type from six.moves import http_client from twisted.internet import defer @@ -131,7 +132,10 @@ class UserRegisterServlet(ClientV1RestServlet): 400, "username must be specified", errcode=Codes.BAD_JSON, ) else: - if (not isinstance(body['username'], str) or len(body['username']) > 512): + if ( + not isinstance(body['username'], text_type) + or len(body['username']) > 512 + ): raise SynapseError(400, "Invalid username") username = body["username"].encode("utf-8") @@ -143,7 +147,10 @@ class UserRegisterServlet(ClientV1RestServlet): 400, "password must be specified", errcode=Codes.BAD_JSON, ) else: - if (not isinstance(body['password'], str) or len(body['password']) > 512): + if ( + not isinstance(body['password'], text_type) + or len(body['password']) > 512 + ): raise SynapseError(400, "Invalid password") password = body["password"].encode("utf-8") @@ -166,17 +173,18 @@ class UserRegisterServlet(ClientV1RestServlet): want_mac.update(b"admin" if admin else b"notadmin") want_mac = want_mac.hexdigest() - if not hmac.compare_digest(want_mac, got_mac): - raise SynapseError( - 403, "HMAC incorrect", - ) + if not hmac.compare_digest(want_mac, got_mac.encode('ascii')): + raise SynapseError(403, "HMAC incorrect") # Reuse the parts of RegisterRestServlet to reduce code duplication from synapse.rest.client.v2_alpha.register import RegisterRestServlet + register = RegisterRestServlet(self.hs) (user_id, _) = yield register.registration_handler.register( - localpart=username.lower(), password=password, admin=bool(admin), + localpart=body['username'].lower(), + password=body["password"], + admin=bool(admin), generate_token=False, ) diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py index d6cf915d86..2f64155d13 100644 --- a/synapse/rest/client/v2_alpha/register.py +++ b/synapse/rest/client/v2_alpha/register.py @@ -193,15 +193,15 @@ class RegisterRestServlet(RestServlet): def on_POST(self, request): body = parse_json_object_from_request(request) - kind = "user" - if "kind" in request.args: - kind = request.args["kind"][0] + kind = b"user" + if b"kind" in request.args: + kind = request.args[b"kind"][0] - if kind == "guest": + if kind == b"guest": ret = yield self._do_guest_registration(body) defer.returnValue(ret) return - elif kind != "user": + elif kind != b"user": raise UnrecognizedRequestError( "Do not understand membership kind: %s" % (kind,) ) @@ -389,8 +389,8 @@ class RegisterRestServlet(RestServlet): assert_params_in_dict(params, ["password"]) desired_username = params.get("username", None) - new_password = params.get("password", None) guest_access_token = params.get("guest_access_token", None) + new_password = params.get("password", None) if desired_username is not None: desired_username = desired_username.lower() diff --git a/synapse/rest/media/v1/media_storage.py b/synapse/rest/media/v1/media_storage.py index b25993fcb5..a6189224ee 100644 --- a/synapse/rest/media/v1/media_storage.py +++ b/synapse/rest/media/v1/media_storage.py @@ -177,7 +177,7 @@ class MediaStorage(object): if res: with res: consumer = BackgroundFileConsumer( - open(local_path, "w"), self.hs.get_reactor()) + open(local_path, "wb"), self.hs.get_reactor()) yield res.write_to_consumer(consumer) yield consumer.wait() defer.returnValue(local_path) diff --git a/synapse/state.py b/synapse/state.py index 033f55d967..e1092b97a9 100644 --- a/synapse/state.py +++ b/synapse/state.py @@ -577,7 +577,7 @@ def _make_state_cache_entry( def _ordered_events(events): def key_func(e): - return -int(e.depth), hashlib.sha1(e.event_id.encode()).hexdigest() + return -int(e.depth), hashlib.sha1(e.event_id.encode('ascii')).hexdigest() return sorted(events, key=key_func) diff --git a/synapse/storage/events.py b/synapse/storage/events.py index c98e524ba1..61223da1a5 100644 --- a/synapse/storage/events.py +++ b/synapse/storage/events.py @@ -67,7 +67,13 @@ state_delta_reuse_delta_counter = Counter( def encode_json(json_object): - return frozendict_json_encoder.encode(json_object) + """ + Encode a Python object as JSON and return it in a Unicode string. + """ + out = frozendict_json_encoder.encode(json_object) + if isinstance(out, bytes): + out = out.decode('utf8') + return out class _EventPeristenceQueue(object): @@ -1058,7 +1064,7 @@ class EventsStore(EventFederationStore, EventsWorkerStore, BackgroundUpdateStore metadata_json = encode_json( event.internal_metadata.get_dict() - ).decode("UTF-8") + ) sql = ( "UPDATE event_json SET internal_metadata = ?" @@ -1172,8 +1178,8 @@ class EventsStore(EventFederationStore, EventsWorkerStore, BackgroundUpdateStore "room_id": event.room_id, "internal_metadata": encode_json( event.internal_metadata.get_dict() - ).decode("UTF-8"), - "json": encode_json(event_dict(event)).decode("UTF-8"), + ), + "json": encode_json(event_dict(event)), } for event, _ in events_and_contexts ], diff --git a/synapse/storage/signatures.py b/synapse/storage/signatures.py index 470212aa2a..5623391f6e 100644 --- a/synapse/storage/signatures.py +++ b/synapse/storage/signatures.py @@ -74,7 +74,7 @@ class SignatureWorkerStore(SQLBaseStore): txn (cursor): event_id (str): Id for the Event. Returns: - A dict of algorithm -> hash. + A dict[unicode, bytes] of algorithm -> hash. """ query = ( "SELECT algorithm, hash" diff --git a/synapse/types.py b/synapse/types.py index 08f058f714..41afb27a74 100644 --- a/synapse/types.py +++ b/synapse/types.py @@ -137,7 +137,7 @@ class DomainSpecificString( @classmethod def from_string(cls, s): """Parse the string given by 's' into a structure object.""" - if len(s) < 1 or s[0] != cls.SIGIL: + if len(s) < 1 or s[0:1] != cls.SIGIL: raise SynapseError(400, "Expected %s string to start with '%s'" % ( cls.__name__, cls.SIGIL, )) diff --git a/synapse/util/frozenutils.py b/synapse/util/frozenutils.py index 581c6052ac..014edea971 100644 --- a/synapse/util/frozenutils.py +++ b/synapse/util/frozenutils.py @@ -13,7 +13,7 @@ # See the License for the specific language governing permissions and # limitations under the License. -from six import string_types +from six import binary_type, text_type from canonicaljson import json from frozendict import frozendict @@ -26,7 +26,7 @@ def freeze(o): if isinstance(o, frozendict): return o - if isinstance(o, string_types): + if isinstance(o, (binary_type, text_type)): return o try: @@ -41,7 +41,7 @@ def unfreeze(o): if isinstance(o, (dict, frozendict)): return dict({k: unfreeze(v) for k, v in o.items()}) - if isinstance(o, string_types): + if isinstance(o, (binary_type, text_type)): return o try: diff --git a/tests/api/test_auth.py b/tests/api/test_auth.py index 5f158ec4b9..a82d737e71 100644 --- a/tests/api/test_auth.py +++ b/tests/api/test_auth.py @@ -46,7 +46,7 @@ class AuthTestCase(unittest.TestCase): self.auth = Auth(self.hs) self.test_user = "@foo:bar" - self.test_token = "_test_token_" + self.test_token = b"_test_token_" # this is overridden for the appservice tests self.store.get_app_service_by_token = Mock(return_value=None) @@ -61,7 +61,7 @@ class AuthTestCase(unittest.TestCase): self.store.get_user_by_access_token = Mock(return_value=user_info) request = Mock(args={}) - request.args["access_token"] = [self.test_token] + request.args[b"access_token"] = [self.test_token] request.requestHeaders.getRawHeaders = mock_getRawHeaders() requester = yield self.auth.get_user_by_req(request) self.assertEquals(requester.user.to_string(), self.test_user) @@ -70,7 +70,7 @@ class AuthTestCase(unittest.TestCase): self.store.get_user_by_access_token = Mock(return_value=None) request = Mock(args={}) - request.args["access_token"] = [self.test_token] + request.args[b"access_token"] = [self.test_token] request.requestHeaders.getRawHeaders = mock_getRawHeaders() d = self.auth.get_user_by_req(request) self.failureResultOf(d, AuthError) @@ -98,7 +98,7 @@ class AuthTestCase(unittest.TestCase): request = Mock(args={}) request.getClientIP.return_value = "127.0.0.1" - request.args["access_token"] = [self.test_token] + request.args[b"access_token"] = [self.test_token] request.requestHeaders.getRawHeaders = mock_getRawHeaders() requester = yield self.auth.get_user_by_req(request) self.assertEquals(requester.user.to_string(), self.test_user) @@ -115,7 +115,7 @@ class AuthTestCase(unittest.TestCase): request = Mock(args={}) request.getClientIP.return_value = "192.168.10.10" - request.args["access_token"] = [self.test_token] + request.args[b"access_token"] = [self.test_token] request.requestHeaders.getRawHeaders = mock_getRawHeaders() requester = yield self.auth.get_user_by_req(request) self.assertEquals(requester.user.to_string(), self.test_user) @@ -131,7 +131,7 @@ class AuthTestCase(unittest.TestCase): request = Mock(args={}) request.getClientIP.return_value = "131.111.8.42" - request.args["access_token"] = [self.test_token] + request.args[b"access_token"] = [self.test_token] request.requestHeaders.getRawHeaders = mock_getRawHeaders() d = self.auth.get_user_by_req(request) self.failureResultOf(d, AuthError) @@ -141,7 +141,7 @@ class AuthTestCase(unittest.TestCase): self.store.get_user_by_access_token = Mock(return_value=None) request = Mock(args={}) - request.args["access_token"] = [self.test_token] + request.args[b"access_token"] = [self.test_token] request.requestHeaders.getRawHeaders = mock_getRawHeaders() d = self.auth.get_user_by_req(request) self.failureResultOf(d, AuthError) @@ -158,7 +158,7 @@ class AuthTestCase(unittest.TestCase): @defer.inlineCallbacks def test_get_user_by_req_appservice_valid_token_valid_user_id(self): - masquerading_user_id = "@doppelganger:matrix.org" + masquerading_user_id = b"@doppelganger:matrix.org" app_service = Mock( token="foobar", url="a_url", sender=self.test_user, ip_range_whitelist=None, @@ -169,14 +169,17 @@ class AuthTestCase(unittest.TestCase): request = Mock(args={}) request.getClientIP.return_value = "127.0.0.1" - request.args["access_token"] = [self.test_token] - request.args["user_id"] = [masquerading_user_id] + request.args[b"access_token"] = [self.test_token] + request.args[b"user_id"] = [masquerading_user_id] request.requestHeaders.getRawHeaders = mock_getRawHeaders() requester = yield self.auth.get_user_by_req(request) - self.assertEquals(requester.user.to_string(), masquerading_user_id) + self.assertEquals( + requester.user.to_string(), + masquerading_user_id.decode('utf8') + ) def test_get_user_by_req_appservice_valid_token_bad_user_id(self): - masquerading_user_id = "@doppelganger:matrix.org" + masquerading_user_id = b"@doppelganger:matrix.org" app_service = Mock( token="foobar", url="a_url", sender=self.test_user, ip_range_whitelist=None, @@ -187,8 +190,8 @@ class AuthTestCase(unittest.TestCase): request = Mock(args={}) request.getClientIP.return_value = "127.0.0.1" - request.args["access_token"] = [self.test_token] - request.args["user_id"] = [masquerading_user_id] + request.args[b"access_token"] = [self.test_token] + request.args[b"user_id"] = [masquerading_user_id] request.requestHeaders.getRawHeaders = mock_getRawHeaders() d = self.auth.get_user_by_req(request) self.failureResultOf(d, AuthError) @@ -418,7 +421,7 @@ class AuthTestCase(unittest.TestCase): # check the token works request = Mock(args={}) - request.args["access_token"] = [token] + request.args[b"access_token"] = [token.encode('ascii')] request.requestHeaders.getRawHeaders = mock_getRawHeaders() requester = yield self.auth.get_user_by_req(request, allow_guest=True) self.assertEqual(UserID.from_string(USER_ID), requester.user) @@ -431,7 +434,7 @@ class AuthTestCase(unittest.TestCase): # the token should *not* work now request = Mock(args={}) - request.args["access_token"] = [guest_tok] + request.args[b"access_token"] = [guest_tok.encode('ascii')] request.requestHeaders.getRawHeaders = mock_getRawHeaders() with self.assertRaises(AuthError) as cm: diff --git a/tests/utils.py b/tests/utils.py index c3dbff8507..9bff3ff3b9 100644 --- a/tests/utils.py +++ b/tests/utils.py @@ -193,7 +193,7 @@ class MockHttpResource(HttpServer): self.prefix = prefix def trigger_get(self, path): - return self.trigger("GET", path, None) + return self.trigger(b"GET", path, None) @patch('twisted.web.http.Request') @defer.inlineCallbacks @@ -227,7 +227,7 @@ class MockHttpResource(HttpServer): headers = {} if federation_auth: - headers[b"Authorization"] = ["X-Matrix origin=test,key=,sig="] + headers[b"Authorization"] = [b"X-Matrix origin=test,key=,sig="] mock_request.requestHeaders.getRawHeaders = mock_getRawHeaders(headers) # return the right path if the event requires it @@ -241,6 +241,9 @@ class MockHttpResource(HttpServer): except Exception: pass + if isinstance(path, bytes): + path = path.decode('utf8') + for (method, pattern, func) in self.callbacks: if http_method != method: continue @@ -249,7 +252,7 @@ class MockHttpResource(HttpServer): if matcher: try: args = [ - urlparse.unquote(u).decode("UTF-8") + urlparse.unquote(u) for u in matcher.groups() ] |