diff options
| -rw-r--r-- | changelog.d/7991.misc | 1 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/account.py | 10 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/register.py | 7 | ||||
| -rw-r--r-- | synapse/storage/databases/main/registration.py | 25 | ||||
| -rw-r--r-- | tests/storage/test_registration.py | 31 |
5 files changed, 68 insertions, 6 deletions
diff --git a/changelog.d/7991.misc b/changelog.d/7991.misc new file mode 100644 index 0000000000..1562e3af9e --- /dev/null +++ b/changelog.d/7991.misc @@ -0,0 +1 @@ +Don't fail `/submit_token` requests on incorrect session ID if `request_token_inhibit_3pid_errors` is turned on. diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py index 203e76b9f2..3481477731 100644 --- a/synapse/rest/client/v2_alpha/account.py +++ b/synapse/rest/client/v2_alpha/account.py @@ -15,6 +15,7 @@ # See the License for the specific language governing permissions and # limitations under the License. import logging +import random from http import HTTPStatus from synapse.api.constants import LoginType @@ -109,6 +110,9 @@ class EmailPasswordRequestTokenRestServlet(RestServlet): if self.config.request_token_inhibit_3pid_errors: # Make the client think the operation succeeded. See the rationale in the # comments for request_token_inhibit_3pid_errors. + # Also wait for some random amount of time between 100ms and 1s to make it + # look like we did something. + await self.hs.clock.sleep(random.randint(1, 10) / 10) return 200, {"sid": random_string(16)} raise SynapseError(400, "Email not found", Codes.THREEPID_NOT_FOUND) @@ -448,6 +452,9 @@ class EmailThreepidRequestTokenRestServlet(RestServlet): if self.config.request_token_inhibit_3pid_errors: # Make the client think the operation succeeded. See the rationale in the # comments for request_token_inhibit_3pid_errors. + # Also wait for some random amount of time between 100ms and 1s to make it + # look like we did something. + await self.hs.clock.sleep(random.randint(1, 10) / 10) return 200, {"sid": random_string(16)} raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE) @@ -516,6 +523,9 @@ class MsisdnThreepidRequestTokenRestServlet(RestServlet): if self.hs.config.request_token_inhibit_3pid_errors: # Make the client think the operation succeeded. See the rationale in the # comments for request_token_inhibit_3pid_errors. + # Also wait for some random amount of time between 100ms and 1s to make it + # look like we did something. + await self.hs.clock.sleep(random.randint(1, 10) / 10) return 200, {"sid": random_string(16)} raise SynapseError(400, "MSISDN is already in use", Codes.THREEPID_IN_USE) diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py index be0e680ac5..51372cdb5e 100644 --- a/synapse/rest/client/v2_alpha/register.py +++ b/synapse/rest/client/v2_alpha/register.py @@ -16,6 +16,7 @@ import hmac import logging +import random from typing import List, Union import synapse @@ -131,6 +132,9 @@ class EmailRegisterRequestTokenRestServlet(RestServlet): if self.hs.config.request_token_inhibit_3pid_errors: # Make the client think the operation succeeded. See the rationale in the # comments for request_token_inhibit_3pid_errors. + # Also wait for some random amount of time between 100ms and 1s to make it + # look like we did something. + await self.hs.clock.sleep(random.randint(1, 10) / 10) return 200, {"sid": random_string(16)} raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE) @@ -203,6 +207,9 @@ class MsisdnRegisterRequestTokenRestServlet(RestServlet): if self.hs.config.request_token_inhibit_3pid_errors: # Make the client think the operation succeeded. See the rationale in the # comments for request_token_inhibit_3pid_errors. + # Also wait for some random amount of time between 100ms and 1s to make it + # look like we did something. + await self.hs.clock.sleep(random.randint(1, 10) / 10) return 200, {"sid": random_string(16)} raise SynapseError( diff --git a/synapse/storage/databases/main/registration.py b/synapse/storage/databases/main/registration.py index 068ad22b30..321a51cc6a 100644 --- a/synapse/storage/databases/main/registration.py +++ b/synapse/storage/databases/main/registration.py @@ -889,6 +889,7 @@ class RegistrationStore(RegistrationBackgroundUpdateStore): super(RegistrationStore, self).__init__(database, db_conn, hs) self._account_validity = hs.config.account_validity + self._ignore_unknown_session_error = hs.config.request_token_inhibit_3pid_errors if self._account_validity.enabled: self._clock.call_later( @@ -1302,15 +1303,22 @@ class RegistrationStore(RegistrationBackgroundUpdateStore): ) if not row: - raise ThreepidValidationError(400, "Unknown session_id") + if self._ignore_unknown_session_error: + # If we need to inhibit the error caused by an incorrect session ID, + # use None as placeholder values for the client secret and the + # validation timestamp. + # It shouldn't be an issue because they're both only checked after + # the token check, which should fail. And if it doesn't for some + # reason, the next check is on the client secret, which is NOT NULL, + # so we don't have to worry about the client secret matching by + # accident. + row = {"client_secret": None, "validated_at": None} + else: + raise ThreepidValidationError(400, "Unknown session_id") + retrieved_client_secret = row["client_secret"] validated_at = row["validated_at"] - if retrieved_client_secret != client_secret: - raise ThreepidValidationError( - 400, "This client_secret does not match the provided session_id" - ) - row = self.db_pool.simple_select_one_txn( txn, table="threepid_validation_token", @@ -1326,6 +1334,11 @@ class RegistrationStore(RegistrationBackgroundUpdateStore): expires = row["expires"] next_link = row["next_link"] + if retrieved_client_secret != client_secret: + raise ThreepidValidationError( + 400, "This client_secret does not match the provided session_id" + ) + # If the session is already validated, no need to revalidate if validated_at: return next_link diff --git a/tests/storage/test_registration.py b/tests/storage/test_registration.py index 840db66072..58f827d8d3 100644 --- a/tests/storage/test_registration.py +++ b/tests/storage/test_registration.py @@ -17,6 +17,7 @@ from twisted.internet import defer from synapse.api.constants import UserTypes +from synapse.api.errors import ThreepidValidationError from tests import unittest from tests.utils import setup_test_homeserver @@ -122,3 +123,33 @@ class RegistrationStoreTestCase(unittest.TestCase): ) res = yield self.store.is_support_user(SUPPORT_USER) self.assertTrue(res) + + @defer.inlineCallbacks + def test_3pid_inhibit_invalid_validation_session_error(self): + """Tests that enabling the configuration option to inhibit 3PID errors on + /requestToken also inhibits validation errors caused by an unknown session ID. + """ + + # Check that, with the config setting set to false (the default value), a + # validation error is caused by the unknown session ID. + try: + yield defer.ensureDeferred( + self.store.validate_threepid_session( + "fake_sid", "fake_client_secret", "fake_token", 0, + ) + ) + except ThreepidValidationError as e: + self.assertEquals(e.msg, "Unknown session_id", e) + + # Set the config setting to true. + self.store._ignore_unknown_session_error = True + + # Check that now the validation error is caused by the token not matching. + try: + yield defer.ensureDeferred( + self.store.validate_threepid_session( + "fake_sid", "fake_client_secret", "fake_token", 0, + ) + ) + except ThreepidValidationError as e: + self.assertEquals(e.msg, "Validation token not found or has expired", e) |