From 1adf6a55870aa08de272591ff49db9dc49738076 Mon Sep 17 00:00:00 2001 From: Brendan Abolivier Date: Thu, 23 Apr 2020 11:22:55 +0200 Subject: [PATCH] Revert "Merge pull request #7315 from matrix-org/babolivier/request_token" This reverts commit 6f4319368b3afab661c55367b9348f9b77bc04a5, reversing changes made to 0d775fcc2d0c7b6a07dad5430256d4d6c75a9f0d. --- changelog.d/7315.feature | 1 - docs/sample_config.yaml | 10 ----- synapse/config/server.py | 21 --------- synapse/rest/client/v2_alpha/account.py | 17 +------- synapse/rest/client/v2_alpha/register.py | 12 +----- tests/rest/client/v2_alpha/test_account.py | 16 ------- tests/rest/client/v2_alpha/test_register.py | 47 +-------------------- 7 files changed, 3 insertions(+), 121 deletions(-) delete mode 100644 changelog.d/7315.feature diff --git a/changelog.d/7315.feature b/changelog.d/7315.feature deleted file mode 100644 index ebcb4741b7..0000000000 --- a/changelog.d/7315.feature +++ /dev/null @@ -1 +0,0 @@ -Allow `/requestToken` endpoints to hide the existence (or lack thereof) of 3PID associations on the homeserver. diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml index abe03b2267..2ff0dd05a2 100644 --- a/docs/sample_config.yaml +++ b/docs/sample_config.yaml @@ -409,16 +409,6 @@ retention: # longest_max_lifetime: 1y # interval: 1d -# Inhibits the /requestToken endpoints from returning an error that might leak -# information about whether an e-mail address is in use or not on this -# homeserver. -# Note that for some endpoints the error situation is the e-mail already being -# used, and for others the error is entering the e-mail being unused. -# If this option is enabled, instead of returning an error, these endpoints will -# act as if no error happened and return a fake session ID ('sid') to clients. -# -#request_token_inhibit_3pid_errors: true - ## TLS ## diff --git a/synapse/config/server.py b/synapse/config/server.py index 8acf3946eb..7525765fee 100644 --- a/synapse/config/server.py +++ b/synapse/config/server.py @@ -507,17 +507,6 @@ class ServerConfig(Config): self.enable_ephemeral_messages = config.get("enable_ephemeral_messages", False) - # Inhibits the /requestToken endpoints from returning an error that might leak - # information about whether an e-mail address is in use or not on this - # homeserver, and instead return a 200 with a fake sid if this kind of error is - # met, without sending anything. - # This is a compromise between sending an email, which could be a spam vector, - # and letting the client know which email address is bound to an account and - # which one isn't. - self.request_token_inhibit_3pid_errors = config.get( - "request_token_inhibit_3pid_errors", False, - ) - def has_tls_listener(self) -> bool: return any(l["tls"] for l in self.listeners) @@ -978,16 +967,6 @@ class ServerConfig(Config): # - shortest_max_lifetime: 3d # longest_max_lifetime: 1y # interval: 1d - - # Inhibits the /requestToken endpoints from returning an error that might leak - # information about whether an e-mail address is in use or not on this - # homeserver. - # Note that for some endpoints the error situation is the e-mail already being - # used, and for others the error is entering the e-mail being unused. - # If this option is enabled, instead of returning an error, these endpoints will - # act as if no error happened and return a fake session ID ('sid') to clients. - # - #request_token_inhibit_3pid_errors: true """ % locals() ) diff --git a/synapse/rest/client/v2_alpha/account.py b/synapse/rest/client/v2_alpha/account.py index e2fdcda655..631cc74cb4 100644 --- a/synapse/rest/client/v2_alpha/account.py +++ b/synapse/rest/client/v2_alpha/account.py @@ -30,7 +30,7 @@ from synapse.http.servlet import ( ) from synapse.push.mailer import Mailer, load_jinja2_templates from synapse.util.msisdn import phone_number_to_msisdn -from synapse.util.stringutils import assert_valid_client_secret, random_string +from synapse.util.stringutils import assert_valid_client_secret from synapse.util.threepids import check_3pid_allowed from ._base import client_patterns, interactive_auth_handler @@ -100,11 +100,6 @@ class EmailPasswordRequestTokenRestServlet(RestServlet): ) if existing_user_id is None: - 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. - return 200, {"sid": random_string(16)} - raise SynapseError(400, "Email not found", Codes.THREEPID_NOT_FOUND) if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE: @@ -383,11 +378,6 @@ class EmailThreepidRequestTokenRestServlet(RestServlet): ) if existing_user_id is not None: - 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. - return 200, {"sid": random_string(16)} - raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE) if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE: @@ -451,11 +441,6 @@ class MsisdnThreepidRequestTokenRestServlet(RestServlet): existing_user_id = await self.store.get_user_id_by_threepid("msisdn", msisdn) if existing_user_id is not None: - 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. - return 200, {"sid": random_string(16)} - raise SynapseError(400, "MSISDN is already in use", Codes.THREEPID_IN_USE) if not self.hs.config.account_threepid_delegate_msisdn: diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py index 416489ae52..a09189b1b4 100644 --- a/synapse/rest/client/v2_alpha/register.py +++ b/synapse/rest/client/v2_alpha/register.py @@ -49,7 +49,7 @@ from synapse.http.servlet import ( from synapse.push.mailer import load_jinja2_templates from synapse.util.msisdn import phone_number_to_msisdn from synapse.util.ratelimitutils import FederationRateLimiter -from synapse.util.stringutils import assert_valid_client_secret, random_string +from synapse.util.stringutils import assert_valid_client_secret from synapse.util.threepids import check_3pid_allowed from ._base import client_patterns, interactive_auth_handler @@ -135,11 +135,6 @@ class EmailRegisterRequestTokenRestServlet(RestServlet): ) if existing_user_id is not None: - 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. - return 200, {"sid": random_string(16)} - raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE) if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE: @@ -207,11 +202,6 @@ class MsisdnRegisterRequestTokenRestServlet(RestServlet): ) if existing_user_id is not None: - 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. - return 200, {"sid": random_string(16)} - raise SynapseError( 400, "Phone number is already in use", Codes.THREEPID_IN_USE ) diff --git a/tests/rest/client/v2_alpha/test_account.py b/tests/rest/client/v2_alpha/test_account.py index de72dc9a40..c3facc00eb 100644 --- a/tests/rest/client/v2_alpha/test_account.py +++ b/tests/rest/client/v2_alpha/test_account.py @@ -178,22 +178,6 @@ class PasswordResetTestCase(unittest.HomeserverTestCase): # Assert we can't log in with the new password self.attempt_wrong_password_login("kermit", new_password) - @unittest.override_config({"request_token_inhibit_3pid_errors": True}) - def test_password_reset_bad_email_inhibit_error(self): - """Test that triggering a password reset with an email address that isn't bound - to an account doesn't leak the lack of binding for that address if configured - that way. - """ - self.register_user("kermit", "monkey") - self.login("kermit", "monkey") - - email = "test@example.com" - - client_secret = "foobar" - session_id = self._request_token(email, client_secret) - - self.assertIsNotNone(session_id) - def _request_token(self, email, client_secret): request, channel = self.make_request( "POST", diff --git a/tests/rest/client/v2_alpha/test_register.py b/tests/rest/client/v2_alpha/test_register.py index 18527353f5..d0c997e385 100644 --- a/tests/rest/client/v2_alpha/test_register.py +++ b/tests/rest/client/v2_alpha/test_register.py @@ -33,11 +33,7 @@ from tests import unittest class RegisterRestServletTestCase(unittest.HomeserverTestCase): - servlets = [ - login.register_servlets, - register.register_servlets, - synapse.rest.admin.register_servlets, - ] + servlets = [register.register_servlets] url = b"/_matrix/client/r0/register" def default_config(self, name="test"): @@ -264,47 +260,6 @@ class RegisterRestServletTestCase(unittest.HomeserverTestCase): [["m.login.email.identity"]], (f["stages"] for f in flows) ) - @unittest.override_config( - { - "request_token_inhibit_3pid_errors": True, - "public_baseurl": "https://test_server", - "email": { - "smtp_host": "mail_server", - "smtp_port": 2525, - "notif_from": "sender@host", - }, - } - ) - def test_request_token_existing_email_inhibit_error(self): - """Test that requesting a token via this endpoint doesn't leak existing - associations if configured that way. - """ - user_id = self.register_user("kermit", "monkey") - self.login("kermit", "monkey") - - email = "test@example.com" - - # Add a threepid - self.get_success( - self.hs.get_datastore().user_add_threepid( - user_id=user_id, - medium="email", - address=email, - validated_at=0, - added_at=0, - ) - ) - - request, channel = self.make_request( - "POST", - b"register/email/requestToken", - {"client_secret": "foobar", "email": email, "send_attempt": 1}, - ) - self.render(request) - self.assertEquals(200, channel.code, channel.result) - - self.assertIsNotNone(channel.json_body.get("sid")) - class AccountValidityTestCase(unittest.HomeserverTestCase):