diff options
| -rw-r--r-- | synapse/api/auth.py | 104 | ||||
| -rw-r--r-- | tests/api/test_auth.py | 142 | ||||
| -rw-r--r-- | tests/rest/client/v1/test_presence.py | 8 | ||||
| -rw-r--r-- | tests/rest/client/v1/test_rooms.py | 28 | ||||
| -rw-r--r-- | tests/rest/client/v1/test_typing.py | 4 | ||||
| -rw-r--r-- | tests/rest/client/v1/utils.py | 3 | ||||
| -rw-r--r-- | tests/rest/client/v2_alpha/__init__.py | 4 |
7 files changed, 257 insertions, 36 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 65ee1452ce..f8ea1e2c69 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -23,6 +23,7 @@ from synapse.util.logutils import log_function from synapse.types import UserID import logging +import pymacaroons logger = logging.getLogger(__name__) @@ -40,6 +41,12 @@ class Auth(object): self.store = hs.get_datastore() self.state = hs.get_state_handler() self.TOKEN_NOT_FOUND_HTTP_STATUS = 401 + self._KNOWN_CAVEAT_PREFIXES = set([ + "gen = ", + "type = ", + "time < ", + "user_id = ", + ]) def check(self, event, auth_events): """ Checks if this event is correctly authed. @@ -359,8 +366,8 @@ class Auth(object): except KeyError: pass # normal users won't have the user_id query parameter set. - user_info = yield self.get_user_by_access_token(access_token) - user = user_info["user"] + user_info = yield self._get_user_by_access_token(access_token) + user_id = user_info["user_id"] token_id = user_info["token_id"] ip_addr = self.hs.get_ip_from_request(request) @@ -368,17 +375,17 @@ class Auth(object): "User-Agent", default=[""] )[0] - if user and access_token and ip_addr: + if user_id and access_token and ip_addr: self.store.insert_client_ip( - user=user, + user=user_id, access_token=access_token, ip=ip_addr, user_agent=user_agent ) - request.authenticated_entity = user.to_string() + request.authenticated_entity = user_id.to_string() - defer.returnValue((user, token_id,)) + defer.returnValue((user_id, token_id,)) except KeyError: raise AuthError( self.TOKEN_NOT_FOUND_HTTP_STATUS, "Missing access token.", @@ -386,7 +393,7 @@ class Auth(object): ) @defer.inlineCallbacks - def get_user_by_access_token(self, token): + def _get_user_by_access_token(self, token): """ Get a registered user's ID. Args: @@ -396,6 +403,86 @@ class Auth(object): Raises: AuthError if no user by that token exists or the token is invalid. """ + try: + ret = yield self._get_user_from_macaroon(token) + except AuthError: + # TODO(daniel): Remove this fallback when all existing access tokens + # have been re-issued as macaroons. + ret = yield self._look_up_user_by_access_token(token) + defer.returnValue(ret) + + @defer.inlineCallbacks + def _get_user_from_macaroon(self, macaroon_str): + try: + macaroon = pymacaroons.Macaroon.deserialize(macaroon_str) + self._validate_macaroon(macaroon) + + user_prefix = "user_id = " + for caveat in macaroon.caveats: + if caveat.caveat_id.startswith(user_prefix): + user_id = UserID.from_string(caveat.caveat_id[len(user_prefix):]) + # This codepath exists so that we can actually return a + # token ID, because we use token IDs in place of device + # identifiers throughout the codebase. + # TODO(daniel): Remove this fallback when device IDs are + # properly implemented. + ret = yield self._look_up_user_by_access_token(macaroon_str) + if ret["user_id"] != user_id: + logger.error( + "Macaroon user (%s) != DB user (%s)", + user_id, + ret["user_id"] + ) + raise AuthError( + self.TOKEN_NOT_FOUND_HTTP_STATUS, + "User mismatch in macaroon", + errcode=Codes.UNKNOWN_TOKEN + ) + defer.returnValue(ret) + raise AuthError( + self.TOKEN_NOT_FOUND_HTTP_STATUS, "No user caveat in macaroon", + errcode=Codes.UNKNOWN_TOKEN + ) + except (pymacaroons.exceptions.MacaroonException, TypeError, ValueError): + raise AuthError( + self.TOKEN_NOT_FOUND_HTTP_STATUS, "Invalid macaroon passed.", + errcode=Codes.UNKNOWN_TOKEN + ) + + def _validate_macaroon(self, macaroon): + v = pymacaroons.Verifier() + v.satisfy_exact("gen = 1") + v.satisfy_exact("type = access") + v.satisfy_general(lambda c: c.startswith("user_id = ")) + v.satisfy_general(self._verify_expiry) + v.verify(macaroon, self.hs.config.macaroon_secret_key) + + v = pymacaroons.Verifier() + v.satisfy_general(self._verify_recognizes_caveats) + v.verify(macaroon, self.hs.config.macaroon_secret_key) + + def _verify_expiry(self, caveat): + prefix = "time < " + if not caveat.startswith(prefix): + return False + # TODO(daniel): Enable expiry check when clients actually know how to + # refresh tokens. (And remember to enable the tests) + return True + expiry = int(caveat[len(prefix):]) + now = self.hs.get_clock().time_msec() + return now < expiry + + def _verify_recognizes_caveats(self, caveat): + first_space = caveat.find(" ") + if first_space < 0: + return False + second_space = caveat.find(" ", first_space + 1) + if second_space < 0: + return False + return caveat[:second_space + 1] in self._KNOWN_CAVEAT_PREFIXES + + @defer.inlineCallbacks + def _look_up_user_by_access_token(self, token): ret = yield self.store.get_user_by_access_token(token) if not ret: raise AuthError( @@ -403,10 +490,9 @@ class Auth(object): errcode=Codes.UNKNOWN_TOKEN ) user_info = { - "user": UserID.from_string(ret.get("name")), + "user_id": UserID.from_string(ret.get("name")), "token_id": ret.get("token_id", None), } - defer.returnValue(user_info) @defer.inlineCallbacks diff --git a/tests/api/test_auth.py b/tests/api/test_auth.py index 22fc804331..1ba85d6f83 100644 --- a/tests/api/test_auth.py +++ b/tests/api/test_auth.py @@ -14,22 +14,27 @@ # limitations under the License. from tests import unittest from twisted.internet import defer +from twisted.trial.unittest import FailTest from mock import Mock from synapse.api.auth import Auth from synapse.api.errors import AuthError +from synapse.types import UserID +from tests.utils import setup_test_homeserver + +import pymacaroons class AuthTestCase(unittest.TestCase): + @defer.inlineCallbacks def setUp(self): self.state_handler = Mock() self.store = Mock() - self.hs = Mock() + self.hs = yield setup_test_homeserver(handlers=None) self.hs.get_datastore = Mock(return_value=self.store) - self.hs.get_state_handler = Mock(return_value=self.state_handler) self.auth = Auth(self.hs) self.test_user = "@foo:bar" @@ -133,3 +138,136 @@ class AuthTestCase(unittest.TestCase): request.requestHeaders.getRawHeaders = Mock(return_value=[""]) d = self.auth.get_user_by_req(request) self.failureResultOf(d, AuthError) + + @defer.inlineCallbacks + def test_get_user_from_macaroon(self): + # TODO(danielwh): Remove this mock when we remove the + # get_user_by_access_token fallback. + self.store.get_user_by_access_token = Mock( + return_value={"name": "@baldrick:matrix.org"} + ) + + user = "@baldrick:matrix.org" + macaroon = pymacaroons.Macaroon( + location=self.hs.config.server_name, + identifier="key", + key=self.hs.config.macaroon_secret_key) + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("type = access") + macaroon.add_first_party_caveat("user_id = %s" % (user,)) + user_info = yield self.auth._get_user_from_macaroon(macaroon.serialize()) + user_id = user_info["user_id"] + self.assertEqual(UserID.from_string(user), user_id) + + @defer.inlineCallbacks + def test_get_user_from_macaroon_user_db_mismatch(self): + self.store.get_user_by_access_token = Mock( + return_value={"name": "@percy:matrix.org"} + ) + + user = "@baldrick:matrix.org" + macaroon = pymacaroons.Macaroon( + location=self.hs.config.server_name, + identifier="key", + key=self.hs.config.macaroon_secret_key) + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("type = access") + macaroon.add_first_party_caveat("user_id = %s" % (user,)) + with self.assertRaises(AuthError) as cm: + yield self.auth._get_user_from_macaroon(macaroon.serialize()) + self.assertEqual(401, cm.exception.code) + self.assertIn("User mismatch", cm.exception.msg) + + @defer.inlineCallbacks + def test_get_user_from_macaroon_missing_caveat(self): + # TODO(danielwh): Remove this mock when we remove the + # get_user_by_access_token fallback. + self.store.get_user_by_access_token = Mock( + return_value={"name": "@baldrick:matrix.org"} + ) + + macaroon = pymacaroons.Macaroon( + location=self.hs.config.server_name, + identifier="key", + key=self.hs.config.macaroon_secret_key) + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("type = access") + + with self.assertRaises(AuthError) as cm: + yield self.auth._get_user_from_macaroon(macaroon.serialize()) + self.assertEqual(401, cm.exception.code) + self.assertIn("No user caveat", cm.exception.msg) + + @defer.inlineCallbacks + def test_get_user_from_macaroon_wrong_key(self): + # TODO(danielwh): Remove this mock when we remove the + # get_user_by_access_token fallback. + self.store.get_user_by_access_token = Mock( + return_value={"name": "@baldrick:matrix.org"} + ) + + user = "@baldrick:matrix.org" + macaroon = pymacaroons.Macaroon( + location=self.hs.config.server_name, + identifier="key", + key=self.hs.config.macaroon_secret_key + "wrong") + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("type = access") + macaroon.add_first_party_caveat("user_id = %s" % (user,)) + + with self.assertRaises(AuthError) as cm: + yield self.auth._get_user_from_macaroon(macaroon.serialize()) + self.assertEqual(401, cm.exception.code) + self.assertIn("Invalid macaroon", cm.exception.msg) + + @defer.inlineCallbacks + def test_get_user_from_macaroon_unknown_caveat(self): + # TODO(danielwh): Remove this mock when we remove the + # get_user_by_access_token fallback. + self.store.get_user_by_access_token = Mock( + return_value={"name": "@baldrick:matrix.org"} + ) + + user = "@baldrick:matrix.org" + macaroon = pymacaroons.Macaroon( + location=self.hs.config.server_name, + identifier="key", + key=self.hs.config.macaroon_secret_key) + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("type = access") + macaroon.add_first_party_caveat("user_id = %s" % (user,)) + macaroon.add_first_party_caveat("cunning > fox") + + with self.assertRaises(AuthError) as cm: + yield self.auth._get_user_from_macaroon(macaroon.serialize()) + self.assertEqual(401, cm.exception.code) + self.assertIn("Invalid macaroon", cm.exception.msg) + + @defer.inlineCallbacks + def test_get_user_from_macaroon_expired(self): + # TODO(danielwh): Remove this mock when we remove the + # get_user_by_access_token fallback. + self.store.get_user_by_access_token = Mock( + return_value={"name": "@baldrick:matrix.org"} + ) + + self.todo = (FailTest, "Token expiry isn't currently enabled",) + self.store.get_user_by_access_token = Mock( + return_value={"name": "@baldrick:matrix.org"} + ) + + user = "@baldrick:matrix.org" + macaroon = pymacaroons.Macaroon( + location=self.hs.config.server_name, + identifier="key", + key=self.hs.config.macaroon_secret_key) + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("type = access") + macaroon.add_first_party_caveat("user_id = %s" % (user,)) + macaroon.add_first_party_caveat("time < 1") # ms + + self.hs.clock.now = 5000 # seconds + with self.assertRaises(AuthError) as cm: + yield self.auth._get_user_from_macaroon(macaroon.serialize()) + self.assertEqual(401, cm.exception.code) + self.assertIn("Invalid macaroon", cm.exception.msg) diff --git a/tests/rest/client/v1/test_presence.py b/tests/rest/client/v1/test_presence.py index 91547bdd06..d8d1416f59 100644 --- a/tests/rest/client/v1/test_presence.py +++ b/tests/rest/client/v1/test_presence.py @@ -72,11 +72,11 @@ class PresenceStateTestCase(unittest.TestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(myid), + "user_id": UserID.from_string(myid), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token room_member_handler = hs.handlers.room_member_handler = Mock( spec=[ @@ -159,7 +159,7 @@ class PresenceListTestCase(unittest.TestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(myid), + "user_id": UserID.from_string(myid), "token_id": 1, } @@ -169,7 +169,7 @@ class PresenceListTestCase(unittest.TestCase): ] ) - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token presence.register_servlets(hs, self.mock_resource) diff --git a/tests/rest/client/v1/test_rooms.py b/tests/rest/client/v1/test_rooms.py index 34ab47d02e..be1d52f720 100644 --- a/tests/rest/client/v1/test_rooms.py +++ b/tests/rest/client/v1/test_rooms.py @@ -56,10 +56,10 @@ class RoomPermissionsTestCase(RestTestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.auth_user_id), + "user_id": UserID.from_string(self.auth_user_id), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token def _insert_client_ip(*args, **kwargs): return defer.succeed(None) @@ -441,10 +441,10 @@ class RoomsMemberListTestCase(RestTestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.auth_user_id), + "user_id": UserID.from_string(self.auth_user_id), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token def _insert_client_ip(*args, **kwargs): return defer.succeed(None) @@ -519,10 +519,10 @@ class RoomsCreateTestCase(RestTestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.auth_user_id), + "user_id": UserID.from_string(self.auth_user_id), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token def _insert_client_ip(*args, **kwargs): return defer.succeed(None) @@ -610,11 +610,11 @@ class RoomTopicTestCase(RestTestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.auth_user_id), + "user_id": UserID.from_string(self.auth_user_id), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token def _insert_client_ip(*args, **kwargs): return defer.succeed(None) @@ -715,10 +715,10 @@ class RoomMemberStateTestCase(RestTestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.auth_user_id), + "user_id": UserID.from_string(self.auth_user_id), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token def _insert_client_ip(*args, **kwargs): return defer.succeed(None) @@ -840,10 +840,10 @@ class RoomMessagesTestCase(RestTestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.auth_user_id), + "user_id": UserID.from_string(self.auth_user_id), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token def _insert_client_ip(*args, **kwargs): return defer.succeed(None) @@ -935,10 +935,10 @@ class RoomInitialSyncTestCase(RestTestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.auth_user_id), + "user_id": UserID.from_string(self.auth_user_id), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token def _insert_client_ip(*args, **kwargs): return defer.succeed(None) diff --git a/tests/rest/client/v1/test_typing.py b/tests/rest/client/v1/test_typing.py index 1c4519406d..da6fc975f7 100644 --- a/tests/rest/client/v1/test_typing.py +++ b/tests/rest/client/v1/test_typing.py @@ -63,11 +63,11 @@ class RoomTypingTestCase(RestTestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.auth_user_id), + "user_id": UserID.from_string(self.auth_user_id), "token_id": 1, } - hs.get_v1auth().get_user_by_access_token = _get_user_by_access_token + hs.get_v1auth()._get_user_by_access_token = _get_user_by_access_token def _insert_client_ip(*args, **kwargs): return defer.succeed(None) diff --git a/tests/rest/client/v1/utils.py b/tests/rest/client/v1/utils.py index c472d53043..85096a0326 100644 --- a/tests/rest/client/v1/utils.py +++ b/tests/rest/client/v1/utils.py @@ -37,9 +37,6 @@ class RestTestCase(unittest.TestCase): self.mock_resource = None self.auth_user_id = None - def mock_get_user_by_access_token(self, token=None): - return self.auth_user_id - @defer.inlineCallbacks def create_room_as(self, room_creator, is_public=True, tok=None): temp_id = self.auth_user_id diff --git a/tests/rest/client/v2_alpha/__init__.py b/tests/rest/client/v2_alpha/__init__.py index ef972a53aa..7d0f77a3ee 100644 --- a/tests/rest/client/v2_alpha/__init__.py +++ b/tests/rest/client/v2_alpha/__init__.py @@ -45,10 +45,10 @@ class V2AlphaRestTestCase(unittest.TestCase): def _get_user_by_access_token(token=None): return { - "user": UserID.from_string(self.USER_ID), + "user_id": UserID.from_string(self.USER_ID), "token_id": 1, } - hs.get_auth().get_user_by_access_token = _get_user_by_access_token + hs.get_auth()._get_user_by_access_token = _get_user_by_access_token for r in self.TO_REGISTER: r.register_servlets(hs, self.mock_resource) |