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![Richard van der Hoff](/assets/img/avatar_default.png)
We should now be able to get our device_id from the access_token, so the device_id on the upload request is optional. Where it is supplied, we should check that it matches. For active access_tokens without an associated device_id, we ought to register the device in the devices table. Also update the table on upgrade so that all of the existing e2e keys are associated with real devices.
333 lines
11 KiB
Python
333 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015, 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 logging
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import simplejson as json
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from canonicaljson import encode_canonical_json
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from twisted.internet import defer
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import synapse.api.errors
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import synapse.server
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import synapse.types
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from synapse.http.servlet import RestServlet, parse_json_object_from_request
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from synapse.types import UserID
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from ._base import client_v2_patterns
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logger = logging.getLogger(__name__)
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class KeyUploadServlet(RestServlet):
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"""
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POST /keys/upload HTTP/1.1
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Content-Type: application/json
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{
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"device_keys": {
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"user_id": "<user_id>",
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"device_id": "<device_id>",
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"valid_until_ts": <millisecond_timestamp>,
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"algorithms": [
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"m.olm.curve25519-aes-sha256",
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]
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"keys": {
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"<algorithm>:<device_id>": "<key_base64>",
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},
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"signatures:" {
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"<user_id>" {
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"<algorithm>:<device_id>": "<signature_base64>"
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} } },
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"one_time_keys": {
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"<algorithm>:<key_id>": "<key_base64>"
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},
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}
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"""
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PATTERNS = client_v2_patterns("/keys/upload(/(?P<device_id>[^/]+))?$",
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releases=(), v2_alpha=False)
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def __init__(self, hs):
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"""
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Args:
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hs (synapse.server.HomeServer): server
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"""
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super(KeyUploadServlet, self).__init__()
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self.store = hs.get_datastore()
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self.clock = hs.get_clock()
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self.auth = hs.get_auth()
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self.device_handler = hs.get_device_handler()
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@defer.inlineCallbacks
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def on_POST(self, request, device_id):
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requester = yield self.auth.get_user_by_req(request)
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user_id = requester.user.to_string()
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body = parse_json_object_from_request(request)
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if device_id is not None:
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# passing the device_id here is deprecated; however, we allow it
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# for now for compatibility with older clients. But if a device_id
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# was given here and in the auth, they must match.
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if (requester.device_id is not None and
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device_id != requester.device_id):
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raise synapse.api.errors.SynapseError(
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400, "Can only upload keys for current device"
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)
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self.device_handler.check_device_registered(
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user_id, device_id, "unknown device"
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)
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else:
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device_id = requester.device_id
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if device_id is None:
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raise synapse.api.errors.SynapseError(
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400,
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"To upload keys, you must pass device_id when authenticating"
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)
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time_now = self.clock.time_msec()
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# TODO: Validate the JSON to make sure it has the right keys.
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device_keys = body.get("device_keys", None)
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if device_keys:
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logger.info(
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"Updating device_keys for device %r for user %s at %d",
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device_id, user_id, time_now
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)
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# TODO: Sign the JSON with the server key
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yield self.store.set_e2e_device_keys(
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user_id, device_id, time_now,
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encode_canonical_json(device_keys)
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)
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one_time_keys = body.get("one_time_keys", None)
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if one_time_keys:
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logger.info(
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"Adding %d one_time_keys for device %r for user %r at %d",
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len(one_time_keys), device_id, user_id, time_now
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)
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key_list = []
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for key_id, key_json in one_time_keys.items():
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algorithm, key_id = key_id.split(":")
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key_list.append((
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algorithm, key_id, encode_canonical_json(key_json)
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))
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yield self.store.add_e2e_one_time_keys(
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user_id, device_id, time_now, key_list
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)
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result = yield self.store.count_e2e_one_time_keys(user_id, device_id)
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defer.returnValue((200, {"one_time_key_counts": result}))
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class KeyQueryServlet(RestServlet):
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"""
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GET /keys/query/<user_id> HTTP/1.1
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GET /keys/query/<user_id>/<device_id> HTTP/1.1
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POST /keys/query HTTP/1.1
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Content-Type: application/json
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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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HTTP/1.1 200 OK
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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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"user_id": "<user_id>", // Duplicated to be signed
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"device_id": "<device_id>", // Duplicated to be signed
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"valid_until_ts": <millisecond_timestamp>,
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"algorithms": [ // List of supported algorithms
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"m.olm.curve25519-aes-sha256",
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],
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"keys": { // Must include a ed25519 signing key
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"<algorithm>:<key_id>": "<key_base64>",
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},
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"signatures:" {
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// Must be signed with device's ed25519 key
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"<user_id>/<device_id>": {
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"<algorithm>:<key_id>": "<signature_base64>"
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}
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// Must be signed by this server.
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"<server_name>": {
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"<algorithm>:<key_id>": "<signature_base64>"
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} } } } } }
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"""
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PATTERNS = client_v2_patterns(
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"/keys/query(?:"
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"/(?P<user_id>[^/]*)(?:"
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"/(?P<device_id>[^/]*)"
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")?"
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")?",
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releases=()
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)
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def __init__(self, hs):
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super(KeyQueryServlet, self).__init__()
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self.store = hs.get_datastore()
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self.auth = hs.get_auth()
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self.federation = hs.get_replication_layer()
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self.is_mine = hs.is_mine
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@defer.inlineCallbacks
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def on_POST(self, request, user_id, device_id):
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yield self.auth.get_user_by_req(request)
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body = parse_json_object_from_request(request)
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result = yield self.handle_request(body)
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defer.returnValue(result)
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@defer.inlineCallbacks
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def on_GET(self, request, user_id, device_id):
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requester = yield self.auth.get_user_by_req(request)
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auth_user_id = requester.user.to_string()
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user_id = user_id if user_id else auth_user_id
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device_ids = [device_id] if device_id else []
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result = yield self.handle_request(
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{"device_keys": {user_id: device_ids}}
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)
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defer.returnValue(result)
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@defer.inlineCallbacks
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def handle_request(self, body):
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local_query = []
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remote_queries = {}
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for user_id, device_ids in body.get("device_keys", {}).items():
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user = UserID.from_string(user_id)
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if self.is_mine(user):
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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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else:
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remote_queries.setdefault(user.domain, {})[user_id] = list(
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device_ids
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)
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results = yield self.store.get_e2e_device_keys(local_query)
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json_result = {}
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for user_id, device_keys in results.items():
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for device_id, json_bytes in device_keys.items():
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json_result.setdefault(user_id, {})[device_id] = json.loads(
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json_bytes
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)
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for destination, device_keys in remote_queries.items():
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remote_result = yield self.federation.query_client_keys(
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destination, {"device_keys": device_keys}
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)
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for user_id, keys in remote_result["device_keys"].items():
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if user_id in device_keys:
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json_result[user_id] = keys
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defer.returnValue((200, {"device_keys": json_result}))
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class OneTimeKeyServlet(RestServlet):
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"""
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GET /keys/claim/<user-id>/<device-id>/<algorithm> HTTP/1.1
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POST /keys/claim HTTP/1.1
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{
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"one_time_keys": {
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"<user_id>": {
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"<device_id>": "<algorithm>"
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} } }
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HTTP/1.1 200 OK
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{
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"one_time_keys": {
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"<user_id>": {
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"<device_id>": {
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"<algorithm>:<key_id>": "<key_base64>"
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} } } }
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"""
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PATTERNS = client_v2_patterns(
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"/keys/claim(?:/?|(?:/"
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"(?P<user_id>[^/]*)/(?P<device_id>[^/]*)/(?P<algorithm>[^/]*)"
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")?)",
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releases=()
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)
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def __init__(self, hs):
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super(OneTimeKeyServlet, self).__init__()
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self.store = hs.get_datastore()
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self.auth = hs.get_auth()
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self.clock = hs.get_clock()
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self.federation = hs.get_replication_layer()
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self.is_mine = hs.is_mine
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@defer.inlineCallbacks
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def on_GET(self, request, user_id, device_id, algorithm):
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yield self.auth.get_user_by_req(request)
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result = yield self.handle_request(
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{"one_time_keys": {user_id: {device_id: algorithm}}}
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)
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defer.returnValue(result)
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@defer.inlineCallbacks
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def on_POST(self, request, user_id, device_id, algorithm):
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yield self.auth.get_user_by_req(request)
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body = parse_json_object_from_request(request)
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result = yield self.handle_request(body)
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defer.returnValue(result)
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@defer.inlineCallbacks
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def handle_request(self, body):
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local_query = []
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remote_queries = {}
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for user_id, device_keys in body.get("one_time_keys", {}).items():
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user = UserID.from_string(user_id)
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if self.is_mine(user):
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for device_id, algorithm in device_keys.items():
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local_query.append((user_id, device_id, algorithm))
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else:
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remote_queries.setdefault(user.domain, {})[user_id] = (
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device_keys
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)
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results = yield self.store.claim_e2e_one_time_keys(local_query)
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json_result = {}
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for user_id, device_keys in results.items():
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for device_id, keys in device_keys.items():
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for key_id, json_bytes in keys.items():
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json_result.setdefault(user_id, {})[device_id] = {
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key_id: json.loads(json_bytes)
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}
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for destination, device_keys in remote_queries.items():
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remote_result = yield self.federation.claim_client_keys(
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destination, {"one_time_keys": device_keys}
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)
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for user_id, keys in remote_result["one_time_keys"].items():
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if user_id in device_keys:
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json_result[user_id] = keys
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defer.returnValue((200, {"one_time_keys": json_result}))
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def register_servlets(hs, http_server):
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KeyUploadServlet(hs).register(http_server)
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KeyQueryServlet(hs).register(http_server)
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OneTimeKeyServlet(hs).register(http_server)
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