From d1c7c2a98a133bdae7747601699a6b9ae0f90c8b Mon Sep 17 00:00:00 2001 From: Hubert Chathi Date: Wed, 24 Jul 2019 23:21:52 -0400 Subject: allow devices to be marked as "hidden" This is a prerequisite for cross-signing, as it allows us to create other things that live within the device namespace, so they can be used for signatures. --- synapse/storage/devices.py | 63 ++++++++++++++++++------ synapse/storage/schema/delta/56/signing_keys.sql | 18 +++++++ 2 files changed, 65 insertions(+), 16 deletions(-) create mode 100644 synapse/storage/schema/delta/56/signing_keys.sql diff --git a/synapse/storage/devices.py b/synapse/storage/devices.py index d2b113a4e7..b73401bc26 100644 --- a/synapse/storage/devices.py +++ b/synapse/storage/devices.py @@ -1,5 +1,7 @@ # -*- coding: utf-8 -*- # Copyright 2016 OpenMarket Ltd +# Copyright 2019 New Vector Ltd +# Copyright 2019 The Matrix.org Foundation C.I.C. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -20,7 +22,7 @@ from canonicaljson import json from twisted.internet import defer -from synapse.api.errors import StoreError +from synapse.api.errors import Codes, StoreError from synapse.metrics.background_process_metrics import run_as_background_process from synapse.storage._base import Cache, SQLBaseStore, db_to_json from synapse.storage.background_updates import BackgroundUpdateStore @@ -35,6 +37,7 @@ DROP_DEVICE_LIST_STREAMS_NON_UNIQUE_INDEXES = ( class DeviceWorkerStore(SQLBaseStore): + @defer.inlineCallbacks def get_device(self, user_id, device_id): """Retrieve a device. @@ -46,12 +49,15 @@ class DeviceWorkerStore(SQLBaseStore): Raises: StoreError: if the device is not found """ - return self._simple_select_one( + ret = yield self._simple_select_one( table="devices", keyvalues={"user_id": user_id, "device_id": device_id}, - retcols=("user_id", "device_id", "display_name"), + retcols=("user_id", "device_id", "display_name", "hidden"), desc="get_device", ) + if ret["hidden"]: + raise StoreError(404, "No row found (devices)") + return ret @defer.inlineCallbacks def get_devices_by_user(self, user_id): @@ -67,11 +73,11 @@ class DeviceWorkerStore(SQLBaseStore): devices = yield self._simple_select_list( table="devices", keyvalues={"user_id": user_id}, - retcols=("user_id", "device_id", "display_name"), + retcols=("user_id", "device_id", "display_name", "hidden"), desc="get_devices_by_user", ) - defer.returnValue({d["device_id"]: d for d in devices}) + defer.returnValue({d["device_id"]: d for d in devices if not d["hidden"]}) @defer.inlineCallbacks def get_devices_by_remote(self, destination, from_stream_id, limit): @@ -540,6 +546,8 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore): Returns: defer.Deferred: boolean whether the device was inserted or an existing device existed with that ID. + Raises: + StoreError: if the device is already in use """ key = (user_id, device_id) if self.device_id_exists_cache.get(key, None): @@ -552,12 +560,25 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore): "user_id": user_id, "device_id": device_id, "display_name": initial_device_display_name, + "hidden": False, }, desc="store_device", or_ignore=True, ) + if not inserted: + # if the device already exists, check if it's a real device, or + # if the device ID is reserved by something else + hidden = yield self._simple_select_one_onecol( + "devices", + keyvalues={"user_id": user_id, "device_id": device_id}, + retcol="hidden", + ) + if hidden: + raise StoreError(400, "The device ID is in use", Codes.FORBIDDEN) self.device_id_exists_cache.prefill(key, True) defer.returnValue(inserted) + except StoreError: + raise except Exception as e: logger.error( "store_device with device_id=%s(%r) user_id=%s(%r)" @@ -582,11 +603,11 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore): Returns: defer.Deferred """ - yield self._simple_delete_one( - table="devices", - keyvalues={"user_id": user_id, "device_id": device_id}, - desc="delete_device", - ) + sql = """ + DELETE FROM devices + WHERE user_id = ? AND device_id = ? AND NOT COALESCE(hidden, ?) + """ + yield self._execute("delete_device", None, sql, user_id, device_id, False) self.device_id_exists_cache.invalidate((user_id, device_id)) @@ -600,13 +621,21 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore): Returns: defer.Deferred """ - yield self._simple_delete_many( - table="devices", - column="device_id", - iterable=device_ids, - keyvalues={"user_id": user_id}, - desc="delete_devices", + + if not device_ids or len(device_ids) == 0: + return + sql = """ + DELETE FROM devices + WHERE user_id = ? AND device_id IN (%s) AND NOT COALESCE(hidden, ?) + """ % ( + ",".join("?" for _ in device_ids) ) + values = [user_id] + values.extend(device_ids) + values.append(False) + + yield self._execute("delete_devices", None, sql, *values) + for device_id in device_ids: self.device_id_exists_cache.invalidate((user_id, device_id)) @@ -628,6 +657,8 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore): updates["display_name"] = new_display_name if not updates: return defer.succeed(None) + # FIXME: should only update if hidden is not True. But updating the + # display name of a hidden device should be harmless return self._simple_update_one( table="devices", keyvalues={"user_id": user_id, "device_id": device_id}, diff --git a/synapse/storage/schema/delta/56/signing_keys.sql b/synapse/storage/schema/delta/56/signing_keys.sql new file mode 100644 index 0000000000..51c96d3116 --- /dev/null +++ b/synapse/storage/schema/delta/56/signing_keys.sql @@ -0,0 +1,18 @@ +/* Copyright 2019 New Vector Ltd + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * 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. + */ + +-- device list needs to know which ones are "real" devices, and which ones are +-- just used to avoid collisions +ALTER TABLE devices ADD COLUMN hidden BOOLEAN NULLABLE; -- cgit 1.4.1