From ad7e570d07e498e7a9395800650aeef0f9fbc914 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Wed, 29 Nov 2017 15:44:59 +0000 Subject: [PATCH] Delete devices in various logout situations Make sure that we delete devices whenever a user is logged out due to any of the following situations: * /logout * /logout_all * change password * deactivate account (by the user or by an admin) * invalidate access token from a dynamic module Fixes #2672. --- synapse/handlers/deactivate_account.py | 8 ++++++++ synapse/handlers/device.py | 20 ++++++++++++++++++- synapse/handlers/set_password.py | 11 +++++++++++ synapse/module_api/__init__.py | 14 +++++++++++-- synapse/rest/client/v1/logout.py | 27 ++++++++++++++++++++++++-- 5 files changed, 75 insertions(+), 5 deletions(-) diff --git a/synapse/handlers/deactivate_account.py b/synapse/handlers/deactivate_account.py index 70f02c9b76..b1d3814909 100644 --- a/synapse/handlers/deactivate_account.py +++ b/synapse/handlers/deactivate_account.py @@ -26,6 +26,7 @@ class DeactivateAccountHandler(BaseHandler): def __init__(self, hs): super(DeactivateAccountHandler, self).__init__(hs) self._auth_handler = hs.get_auth_handler() + self._device_handler = hs.get_device_handler() @defer.inlineCallbacks def deactivate_account(self, user_id): @@ -39,6 +40,13 @@ class DeactivateAccountHandler(BaseHandler): """ # FIXME: Theoretically there is a race here wherein user resets # password using threepid. + + # first delete any devices belonging to the user, which will also + # delete corresponding access tokens. + yield self._device_handler.delete_all_devices_for_user(user_id) + # then delete any remaining access tokens which weren't associated with + # a device. yield self._auth_handler.delete_access_tokens_for_user(user_id) + yield self.store.user_delete_threepids(user_id) yield self.store.user_set_password_hash(user_id, None) diff --git a/synapse/handlers/device.py b/synapse/handlers/device.py index 579d8477ba..2152efc692 100644 --- a/synapse/handlers/device.py +++ b/synapse/handlers/device.py @@ -170,13 +170,31 @@ class DeviceHandler(BaseHandler): yield self.notify_device_update(user_id, [device_id]) + @defer.inlineCallbacks + def delete_all_devices_for_user(self, user_id, except_device_id=None): + """Delete all of the user's devices + + Args: + user_id (str): + except_device_id (str|None): optional device id which should not + be deleted + + Returns: + defer.Deferred: + """ + device_map = yield self.store.get_devices_by_user(user_id) + device_ids = device_map.keys() + if except_device_id is not None: + device_ids = [d for d in device_ids if d != except_device_id] + yield self.delete_devices(user_id, device_ids) + @defer.inlineCallbacks def delete_devices(self, user_id, device_ids): """ Delete several devices Args: user_id (str): - device_ids (str): The list of device IDs to delete + device_ids (List[str]): The list of device IDs to delete Returns: defer.Deferred: diff --git a/synapse/handlers/set_password.py b/synapse/handlers/set_password.py index c0d83f229c..44414e1dc1 100644 --- a/synapse/handlers/set_password.py +++ b/synapse/handlers/set_password.py @@ -27,11 +27,13 @@ class SetPasswordHandler(BaseHandler): def __init__(self, hs): super(SetPasswordHandler, self).__init__(hs) self._auth_handler = hs.get_auth_handler() + self._device_handler = hs.get_device_handler() @defer.inlineCallbacks def set_password(self, user_id, newpassword, requester=None): password_hash = self._auth_handler.hash(newpassword) + except_device_id = requester.device_id if requester else None except_access_token_id = requester.access_token_id if requester else None try: @@ -40,6 +42,15 @@ class SetPasswordHandler(BaseHandler): if e.code == 404: raise SynapseError(404, "Unknown user", Codes.NOT_FOUND) raise e + + # we want to log out all of the user's other sessions. First delete + # all his other devices. + yield self._device_handler.delete_all_devices_for_user( + user_id, except_device_id=except_device_id, + ) + + # and now delete any access tokens which weren't associated with + # devices (or were associated with this device). yield self._auth_handler.delete_access_tokens_for_user( user_id, except_token_id=except_access_token_id, ) diff --git a/synapse/module_api/__init__.py b/synapse/module_api/__init__.py index dc680ddf43..097c844d31 100644 --- a/synapse/module_api/__init__.py +++ b/synapse/module_api/__init__.py @@ -12,6 +12,7 @@ # 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. +from twisted.internet import defer from synapse.types import UserID @@ -81,6 +82,7 @@ class ModuleApi(object): reg = self.hs.get_handlers().registration_handler return reg.register(localpart=localpart) + @defer.inlineCallbacks def invalidate_access_token(self, access_token): """Invalidate an access token for a user @@ -94,8 +96,16 @@ class ModuleApi(object): Raises: synapse.api.errors.AuthError: the access token is invalid """ - - return self._auth_handler.delete_access_token(access_token) + # see if the access token corresponds to a device + user_info = yield self._auth.get_user_by_access_token(access_token) + device_id = user_info.get("device_id") + user_id = user_info["user"].to_string() + if device_id: + # delete the device, which will also delete its access tokens + yield self.hs.get_device_handler().delete_device(user_id, device_id) + else: + # no associated device. Just delete the access token. + yield self._auth_handler.delete_access_token(access_token) def run_db_interaction(self, desc, func, *args, **kwargs): """Run a function with a database connection diff --git a/synapse/rest/client/v1/logout.py b/synapse/rest/client/v1/logout.py index 6add754782..ca49955935 100644 --- a/synapse/rest/client/v1/logout.py +++ b/synapse/rest/client/v1/logout.py @@ -16,6 +16,7 @@ from twisted.internet import defer from synapse.api.auth import get_access_token_from_request +from synapse.api.errors import AuthError from .base import ClientV1RestServlet, client_path_patterns @@ -30,15 +31,30 @@ class LogoutRestServlet(ClientV1RestServlet): def __init__(self, hs): super(LogoutRestServlet, self).__init__(hs) + self._auth = hs.get_auth() self._auth_handler = hs.get_auth_handler() + self._device_handler = hs.get_device_handler() def on_OPTIONS(self, request): return (200, {}) @defer.inlineCallbacks def on_POST(self, request): - access_token = get_access_token_from_request(request) - yield self._auth_handler.delete_access_token(access_token) + try: + requester = yield self.auth.get_user_by_req(request) + except AuthError: + # this implies the access token has already been deleted. + pass + else: + if requester.device_id is None: + # the acccess token wasn't associated with a device. + # Just delete the access token + access_token = get_access_token_from_request(request) + yield self._auth_handler.delete_access_token(access_token) + else: + yield self._device_handler.delete_device( + requester.user.to_string(), requester.device_id) + defer.returnValue((200, {})) @@ -49,6 +65,7 @@ class LogoutAllRestServlet(ClientV1RestServlet): super(LogoutAllRestServlet, self).__init__(hs) self.auth = hs.get_auth() self._auth_handler = hs.get_auth_handler() + self._device_handler = hs.get_device_handler() def on_OPTIONS(self, request): return (200, {}) @@ -57,6 +74,12 @@ class LogoutAllRestServlet(ClientV1RestServlet): def on_POST(self, request): requester = yield self.auth.get_user_by_req(request) user_id = requester.user.to_string() + + # first delete all of the user's devices + yield self._device_handler.delete_all_devices_for_user(user_id) + + # .. and then delete any access tokens which weren't associated with + # devices. yield self._auth_handler.delete_access_tokens_for_user(user_id) defer.returnValue((200, {}))