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Cross-signing [1/4] -- hidden devices (#5759)
* 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.
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4 changed files with 49 additions and 10 deletions
1
changelog.d/5759.misc
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1
changelog.d/5759.misc
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Allow devices to be marked as hidden, for use by features such as cross-signing.
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@ -1,5 +1,7 @@
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# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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# Copyright 2019 New Vector Ltd
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# Copyright 2019 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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@ -20,7 +22,7 @@ from canonicaljson import json
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from twisted.internet import defer
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from synapse.api.errors import StoreError
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from synapse.api.errors import Codes, StoreError
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from synapse.metrics.background_process_metrics import run_as_background_process
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from synapse.storage._base import Cache, SQLBaseStore, db_to_json
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from synapse.storage.background_updates import BackgroundUpdateStore
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@ -36,7 +38,8 @@ DROP_DEVICE_LIST_STREAMS_NON_UNIQUE_INDEXES = (
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class DeviceWorkerStore(SQLBaseStore):
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def get_device(self, user_id, device_id):
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"""Retrieve a device.
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"""Retrieve a device. Only returns devices that are not marked as
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hidden.
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Args:
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user_id (str): The ID of the user which owns the device
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@ -48,14 +51,15 @@ class DeviceWorkerStore(SQLBaseStore):
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"""
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return self._simple_select_one(
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table="devices",
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keyvalues={"user_id": user_id, "device_id": device_id},
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keyvalues={"user_id": user_id, "device_id": device_id, "hidden": False},
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retcols=("user_id", "device_id", "display_name"),
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desc="get_device",
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)
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@defer.inlineCallbacks
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def get_devices_by_user(self, user_id):
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"""Retrieve all of a user's registered devices.
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"""Retrieve all of a user's registered devices. Only returns devices
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that are not marked as hidden.
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Args:
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user_id (str):
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@ -66,7 +70,7 @@ class DeviceWorkerStore(SQLBaseStore):
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"""
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devices = yield self._simple_select_list(
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table="devices",
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keyvalues={"user_id": user_id},
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keyvalues={"user_id": user_id, "hidden": False},
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retcols=("user_id", "device_id", "display_name"),
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desc="get_devices_by_user",
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)
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@ -540,6 +544,8 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore):
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Returns:
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defer.Deferred: boolean whether the device was inserted or an
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existing device existed with that ID.
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Raises:
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StoreError: if the device is already in use
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"""
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key = (user_id, device_id)
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if self.device_id_exists_cache.get(key, None):
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@ -552,12 +558,25 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore):
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"user_id": user_id,
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"device_id": device_id,
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"display_name": initial_device_display_name,
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"hidden": False,
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},
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desc="store_device",
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or_ignore=True,
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)
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if not inserted:
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# if the device already exists, check if it's a real device, or
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# if the device ID is reserved by something else
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hidden = yield self._simple_select_one_onecol(
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"devices",
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keyvalues={"user_id": user_id, "device_id": device_id},
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retcol="hidden",
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)
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if hidden:
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raise StoreError(400, "The device ID is in use", Codes.FORBIDDEN)
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self.device_id_exists_cache.prefill(key, True)
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return inserted
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except StoreError:
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raise
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except Exception as e:
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logger.error(
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"store_device with device_id=%s(%r) user_id=%s(%r)"
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@ -584,7 +603,7 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore):
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"""
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yield self._simple_delete_one(
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table="devices",
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keyvalues={"user_id": user_id, "device_id": device_id},
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keyvalues={"user_id": user_id, "device_id": device_id, "hidden": False},
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desc="delete_device",
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)
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@ -604,14 +623,15 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore):
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table="devices",
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column="device_id",
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iterable=device_ids,
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keyvalues={"user_id": user_id},
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keyvalues={"user_id": user_id, "hidden": False},
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desc="delete_devices",
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)
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for device_id in device_ids:
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self.device_id_exists_cache.invalidate((user_id, device_id))
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def update_device(self, user_id, device_id, new_display_name=None):
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"""Update a device.
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"""Update a device. Only updates the device if it is not marked as
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hidden.
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Args:
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user_id (str): The ID of the user which owns the device
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@ -630,7 +650,7 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore):
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return defer.succeed(None)
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return self._simple_update_one(
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table="devices",
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keyvalues={"user_id": user_id, "device_id": device_id},
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keyvalues={"user_id": user_id, "device_id": device_id, "hidden": False},
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updatevalues=updates,
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desc="update_device",
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)
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@ -85,7 +85,7 @@ class EndToEndKeyWorkerStore(SQLBaseStore):
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" k.key_json"
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" FROM devices d"
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" %s JOIN e2e_device_keys_json k USING (user_id, device_id)"
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" WHERE %s"
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" WHERE %s AND NOT d.hidden"
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) % (
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"LEFT" if include_all_devices else "INNER",
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" OR ".join("(" + q + ")" for q in query_clauses),
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18
synapse/storage/schema/delta/56/hidden_devices.sql
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18
synapse/storage/schema/delta/56/hidden_devices.sql
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/* Copyright 2019 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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-- device list needs to know which ones are "real" devices, and which ones are
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-- just used to avoid collisions
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ALTER TABLE devices ADD COLUMN hidden BOOLEAN DEFAULT FALSE;
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