From 225c16508705ecfdde44e3c90060609fab020e32 Mon Sep 17 00:00:00 2001 From: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com> Date: Thu, 14 May 2020 16:32:49 +0100 Subject: Allow expired accounts to logout (#7443) --- changelog.d/7443.bugfix | 1 + synapse/api/auth.py | 50 ++++++++++++++------- synapse/rest/client/v1/logout.py | 6 +-- tests/rest/client/v1/test_login.py | 69 ++++++++++++++++++++++++++++- tests/rest/client/v2_alpha/test_register.py | 36 ++++++++++++++- 5 files changed, 140 insertions(+), 22 deletions(-) create mode 100644 changelog.d/7443.bugfix diff --git a/changelog.d/7443.bugfix b/changelog.d/7443.bugfix new file mode 100644 index 0000000000..1dddec59ed --- /dev/null +++ b/changelog.d/7443.bugfix @@ -0,0 +1 @@ +Allow expired user accounts to log out their device sessions. \ No newline at end of file diff --git a/synapse/api/auth.py b/synapse/api/auth.py index e009b1a760..3c660318fc 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -22,6 +22,7 @@ import pymacaroons from netaddr import IPAddress from twisted.internet import defer +from twisted.web.server import Request import synapse.logging.opentracing as opentracing import synapse.types @@ -162,19 +163,25 @@ class Auth(object): @defer.inlineCallbacks def get_user_by_req( - self, request, allow_guest=False, rights="access", allow_expired=False + self, + request: Request, + allow_guest: bool = False, + rights: str = "access", + allow_expired: bool = False, ): """ Get a registered user's ID. Args: - request - An HTTP request with an access_token query parameter. - allow_expired - Whether to allow the request through even if the account is - expired. If true, Synapse will still require an access token to be - provided but won't check if the account it belongs to has expired. This - works thanks to /login delivering access tokens regardless of accounts' - expiration. + request: An HTTP request with an access_token query parameter. + allow_guest: If False, will raise an AuthError if the user making the + request is a guest. + rights: The operation being performed; the access token must allow this + allow_expired: If True, allow the request through even if the account + is expired, or session token lifetime has ended. Note that + /login will deliver access tokens regardless of expiration. + Returns: - defer.Deferred: resolves to a ``synapse.types.Requester`` object + defer.Deferred: resolves to a `synapse.types.Requester` object Raises: InvalidClientCredentialsError if no user by that token exists or the token is invalid. @@ -205,7 +212,9 @@ class Auth(object): return synapse.types.create_requester(user_id, app_service=app_service) - user_info = yield self.get_user_by_access_token(access_token, rights) + user_info = yield self.get_user_by_access_token( + access_token, rights, allow_expired=allow_expired + ) user = user_info["user"] token_id = user_info["token_id"] is_guest = user_info["is_guest"] @@ -280,13 +289,17 @@ class Auth(object): return user_id, app_service @defer.inlineCallbacks - def get_user_by_access_token(self, token, rights="access"): + def get_user_by_access_token( + self, token: str, rights: str = "access", allow_expired: bool = False, + ): """ Validate access token and get user_id from it Args: - token (str): The access token to get the user by. - rights (str): The operation being performed; the access token must - allow this. + token: The access token to get the user by + rights: The operation being performed; the access token must + allow this + allow_expired: If False, raises an InvalidClientTokenError + if the token is expired Returns: Deferred[dict]: dict that includes: `user` (UserID) @@ -294,8 +307,10 @@ class Auth(object): `token_id` (int|None): access token id. May be None if guest `device_id` (str|None): device corresponding to access token Raises: + InvalidClientTokenError if a user by that token exists, but the token is + expired InvalidClientCredentialsError if no user by that token exists or the token - is invalid. + is invalid """ if rights == "access": @@ -304,7 +319,8 @@ class Auth(object): if r: valid_until_ms = r["valid_until_ms"] if ( - valid_until_ms is not None + not allow_expired + and valid_until_ms is not None and valid_until_ms < self.clock.time_msec() ): # there was a valid access token, but it has expired. @@ -575,7 +591,7 @@ class Auth(object): return user_level >= send_level @staticmethod - def has_access_token(request): + def has_access_token(request: Request): """Checks if the request has an access_token. Returns: @@ -586,7 +602,7 @@ class Auth(object): return bool(query_params) or bool(auth_headers) @staticmethod - def get_access_token_from_request(request): + def get_access_token_from_request(request: Request): """Extracts the access_token from the request. Args: diff --git a/synapse/rest/client/v1/logout.py b/synapse/rest/client/v1/logout.py index 1cf3caf832..b0c30b65be 100644 --- a/synapse/rest/client/v1/logout.py +++ b/synapse/rest/client/v1/logout.py @@ -34,10 +34,10 @@ class LogoutRestServlet(RestServlet): return 200, {} async def on_POST(self, request): - requester = await self.auth.get_user_by_req(request) + requester = await self.auth.get_user_by_req(request, allow_expired=True) if requester.device_id is None: - # the acccess token wasn't associated with a device. + # The access token wasn't associated with a device. # Just delete the access token access_token = self.auth.get_access_token_from_request(request) await self._auth_handler.delete_access_token(access_token) @@ -62,7 +62,7 @@ class LogoutAllRestServlet(RestServlet): return 200, {} async def on_POST(self, request): - requester = await self.auth.get_user_by_req(request) + requester = await self.auth.get_user_by_req(request, allow_expired=True) user_id = requester.user.to_string() # first delete all of the user's devices diff --git a/tests/rest/client/v1/test_login.py b/tests/rest/client/v1/test_login.py index 1856c7ffd5..eb8f6264fd 100644 --- a/tests/rest/client/v1/test_login.py +++ b/tests/rest/client/v1/test_login.py @@ -4,7 +4,7 @@ import urllib.parse from mock import Mock import synapse.rest.admin -from synapse.rest.client.v1 import login +from synapse.rest.client.v1 import login, logout from synapse.rest.client.v2_alpha import devices from synapse.rest.client.v2_alpha.account import WhoamiRestServlet @@ -20,6 +20,7 @@ class LoginRestServletTestCase(unittest.HomeserverTestCase): servlets = [ synapse.rest.admin.register_servlets_for_client_rest_resource, login.register_servlets, + logout.register_servlets, devices.register_servlets, lambda hs, http_server: WhoamiRestServlet(hs).register(http_server), ] @@ -256,6 +257,72 @@ class LoginRestServletTestCase(unittest.HomeserverTestCase): self.render(request) self.assertEquals(channel.code, 200, channel.result) + @override_config({"session_lifetime": "24h"}) + def test_session_can_hard_logout_after_being_soft_logged_out(self): + self.register_user("kermit", "monkey") + + # log in as normal + access_token = self.login("kermit", "monkey") + + # we should now be able to make requests with the access token + request, channel = self.make_request( + b"GET", TEST_URL, access_token=access_token + ) + self.render(request) + self.assertEquals(channel.code, 200, channel.result) + + # time passes + self.reactor.advance(24 * 3600) + + # ... and we should be soft-logouted + request, channel = self.make_request( + b"GET", TEST_URL, access_token=access_token + ) + self.render(request) + self.assertEquals(channel.code, 401, channel.result) + self.assertEquals(channel.json_body["errcode"], "M_UNKNOWN_TOKEN") + self.assertEquals(channel.json_body["soft_logout"], True) + + # Now try to hard logout this session + request, channel = self.make_request( + b"POST", "/logout", access_token=access_token + ) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + + @override_config({"session_lifetime": "24h"}) + def test_session_can_hard_logout_all_sessions_after_being_soft_logged_out(self): + self.register_user("kermit", "monkey") + + # log in as normal + access_token = self.login("kermit", "monkey") + + # we should now be able to make requests with the access token + request, channel = self.make_request( + b"GET", TEST_URL, access_token=access_token + ) + self.render(request) + self.assertEquals(channel.code, 200, channel.result) + + # time passes + self.reactor.advance(24 * 3600) + + # ... and we should be soft-logouted + request, channel = self.make_request( + b"GET", TEST_URL, access_token=access_token + ) + self.render(request) + self.assertEquals(channel.code, 401, channel.result) + self.assertEquals(channel.json_body["errcode"], "M_UNKNOWN_TOKEN") + self.assertEquals(channel.json_body["soft_logout"], True) + + # Now try to hard log out all of the user's sessions + request, channel = self.make_request( + b"POST", "/logout/all", access_token=access_token + ) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + class CASTestCase(unittest.HomeserverTestCase): diff --git a/tests/rest/client/v2_alpha/test_register.py b/tests/rest/client/v2_alpha/test_register.py index a68a96f618..5637ce2090 100644 --- a/tests/rest/client/v2_alpha/test_register.py +++ b/tests/rest/client/v2_alpha/test_register.py @@ -25,7 +25,7 @@ import synapse.rest.admin from synapse.api.constants import LoginType from synapse.api.errors import Codes from synapse.appservice import ApplicationService -from synapse.rest.client.v1 import login +from synapse.rest.client.v1 import login, logout from synapse.rest.client.v2_alpha import account, account_validity, register, sync from tests import unittest @@ -313,6 +313,7 @@ class AccountValidityTestCase(unittest.HomeserverTestCase): synapse.rest.admin.register_servlets_for_client_rest_resource, login.register_servlets, sync.register_servlets, + logout.register_servlets, account_validity.register_servlets, ] @@ -405,6 +406,39 @@ class AccountValidityTestCase(unittest.HomeserverTestCase): channel.json_body["errcode"], Codes.EXPIRED_ACCOUNT, channel.result ) + def test_logging_out_expired_user(self): + user_id = self.register_user("kermit", "monkey") + tok = self.login("kermit", "monkey") + + self.register_user("admin", "adminpassword", admin=True) + admin_tok = self.login("admin", "adminpassword") + + url = "/_matrix/client/unstable/admin/account_validity/validity" + params = { + "user_id": user_id, + "expiration_ts": 0, + "enable_renewal_emails": False, + } + request_data = json.dumps(params) + request, channel = self.make_request( + b"POST", url, request_data, access_token=admin_tok + ) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + + # Try to log the user out + request, channel = self.make_request(b"POST", "/logout", access_token=tok) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + + # Log the user in again (allowed for expired accounts) + tok = self.login("kermit", "monkey") + + # Try to log out all of the user's sessions + request, channel = self.make_request(b"POST", "/logout/all", access_token=tok) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + class AccountValidityRenewalByEmailTestCase(unittest.HomeserverTestCase): -- cgit 1.4.1