mirror of
https://mau.dev/maunium/synapse.git
synced 2024-10-01 01:36:05 -04:00
139 lines
4.7 KiB
Python
139 lines
4.7 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket 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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import collections
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import json
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import logging
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from twisted.internet import defer
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from synapse.api import errors
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import synapse.types
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logger = logging.getLogger(__name__)
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class E2eKeysHandler(object):
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def __init__(self, hs):
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self.store = hs.get_datastore()
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self.federation = hs.get_replication_layer()
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self.is_mine_id = hs.is_mine_id
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self.server_name = hs.hostname
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# doesn't really work as part of the generic query API, because the
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# query request requires an object POST, but we abuse the
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# "query handler" interface.
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self.federation.register_query_handler(
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"client_keys", self.on_federation_query_client_keys
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)
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@defer.inlineCallbacks
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def query_devices(self, query_body):
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""" Handle a device key query from a client
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{
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"device_keys": {
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"<user_id>": ["<device_id>"]
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}
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}
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->
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{
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"device_keys": {
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"<user_id>": {
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"<device_id>": {
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...
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}
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}
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}
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}
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"""
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device_keys_query = query_body.get("device_keys", {})
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# separate users by domain.
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# make a map from domain to user_id to device_ids
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queries_by_domain = collections.defaultdict(dict)
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for user_id, device_ids in device_keys_query.items():
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user = synapse.types.UserID.from_string(user_id)
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queries_by_domain[user.domain][user_id] = device_ids
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# do the queries
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# TODO: do these in parallel
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results = {}
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for destination, destination_query in queries_by_domain.items():
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if destination == self.server_name:
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res = yield self.query_local_devices(destination_query)
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else:
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res = yield self.federation.query_client_keys(
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destination, {"device_keys": destination_query}
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)
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res = res["device_keys"]
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for user_id, keys in res.items():
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if user_id in destination_query:
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results[user_id] = keys
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defer.returnValue((200, {"device_keys": results}))
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@defer.inlineCallbacks
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def query_local_devices(self, query):
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"""Get E2E device keys for local users
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Args:
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query (dict[string, list[string]|None): map from user_id to a list
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of devices to query (None for all devices)
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Returns:
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defer.Deferred: (resolves to dict[string, dict[string, dict]]):
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map from user_id -> device_id -> device details
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"""
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local_query = []
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result_dict = {}
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for user_id, device_ids in query.items():
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if not self.is_mine_id(user_id):
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logger.warning("Request for keys for non-local user %s",
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user_id)
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raise errors.SynapseError(400, "Not a user here")
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if not device_ids:
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local_query.append((user_id, None))
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else:
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for device_id in device_ids:
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local_query.append((user_id, device_id))
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# make sure that each queried user appears in the result dict
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result_dict[user_id] = {}
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results = yield self.store.get_e2e_device_keys(local_query)
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# Build the result structure, un-jsonify the results, and add the
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# "unsigned" section
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for user_id, device_keys in results.items():
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for device_id, device_info in device_keys.items():
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r = json.loads(device_info["key_json"])
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r["unsigned"] = {
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"device_display_name": device_info["device_display_name"],
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}
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result_dict[user_id][device_id] = r
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defer.returnValue(result_dict)
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@defer.inlineCallbacks
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def on_federation_query_client_keys(self, query_body):
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""" Handle a device key query from a federated server
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"""
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device_keys_query = query_body.get("device_keys", {})
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res = yield self.query_local_devices(device_keys_query)
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defer.returnValue({"device_keys": res})
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