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.
This commit is contained in:
Hubert Chathi 2019-08-12 15:14:37 -07:00 committed by GitHub
parent d1b5b055be
commit f63ba7a795
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4 changed files with 49 additions and 10 deletions

1
changelog.d/5759.misc Normal file
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@ -0,0 +1 @@
Allow devices to be marked as hidden, for use by features such as cross-signing.

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@ -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
@ -36,7 +38,8 @@ DROP_DEVICE_LIST_STREAMS_NON_UNIQUE_INDEXES = (
class DeviceWorkerStore(SQLBaseStore):
def get_device(self, user_id, device_id):
"""Retrieve a device.
"""Retrieve a device. Only returns devices that are not marked as
hidden.
Args:
user_id (str): The ID of the user which owns the device
@ -48,14 +51,15 @@ class DeviceWorkerStore(SQLBaseStore):
"""
return self._simple_select_one(
table="devices",
keyvalues={"user_id": user_id, "device_id": device_id},
keyvalues={"user_id": user_id, "device_id": device_id, "hidden": False},
retcols=("user_id", "device_id", "display_name"),
desc="get_device",
)
@defer.inlineCallbacks
def get_devices_by_user(self, user_id):
"""Retrieve all of a user's registered devices.
"""Retrieve all of a user's registered devices. Only returns devices
that are not marked as hidden.
Args:
user_id (str):
@ -66,7 +70,7 @@ class DeviceWorkerStore(SQLBaseStore):
"""
devices = yield self._simple_select_list(
table="devices",
keyvalues={"user_id": user_id},
keyvalues={"user_id": user_id, "hidden": False},
retcols=("user_id", "device_id", "display_name"),
desc="get_devices_by_user",
)
@ -540,6 +544,8 @@ 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 +558,25 @@ 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)
return inserted
except StoreError:
raise
except Exception as e:
logger.error(
"store_device with device_id=%s(%r) user_id=%s(%r)"
@ -584,7 +603,7 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore):
"""
yield self._simple_delete_one(
table="devices",
keyvalues={"user_id": user_id, "device_id": device_id},
keyvalues={"user_id": user_id, "device_id": device_id, "hidden": False},
desc="delete_device",
)
@ -604,14 +623,15 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore):
table="devices",
column="device_id",
iterable=device_ids,
keyvalues={"user_id": user_id},
keyvalues={"user_id": user_id, "hidden": False},
desc="delete_devices",
)
for device_id in device_ids:
self.device_id_exists_cache.invalidate((user_id, device_id))
def update_device(self, user_id, device_id, new_display_name=None):
"""Update a device.
"""Update a device. Only updates the device if it is not marked as
hidden.
Args:
user_id (str): The ID of the user which owns the device
@ -630,7 +650,7 @@ class DeviceStore(DeviceWorkerStore, BackgroundUpdateStore):
return defer.succeed(None)
return self._simple_update_one(
table="devices",
keyvalues={"user_id": user_id, "device_id": device_id},
keyvalues={"user_id": user_id, "device_id": device_id, "hidden": False},
updatevalues=updates,
desc="update_device",
)

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@ -85,7 +85,7 @@ class EndToEndKeyWorkerStore(SQLBaseStore):
" k.key_json"
" FROM devices d"
" %s JOIN e2e_device_keys_json k USING (user_id, device_id)"
" WHERE %s"
" WHERE %s AND NOT d.hidden"
) % (
"LEFT" if include_all_devices else "INNER",
" OR ".join("(" + q + ")" for q in query_clauses),

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@ -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 DEFAULT FALSE;