551 lines
21 KiB
Python
551 lines
21 KiB
Python
# Copyright 2015, 2016 OpenMarket 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.
|
|
import itertools
|
|
import logging
|
|
from collections import defaultdict
|
|
from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple, Union
|
|
|
|
from synapse.api.constants import AccountDataTypes, EduTypes, Membership, PresenceState
|
|
from synapse.api.errors import Codes, StoreError, SynapseError
|
|
from synapse.api.filtering import FilterCollection
|
|
from synapse.api.presence import UserPresenceState
|
|
from synapse.events.utils import (
|
|
SerializeEventConfig,
|
|
format_event_for_client_v2_without_room_id,
|
|
format_event_raw,
|
|
)
|
|
from synapse.handlers.presence import format_user_presence_state
|
|
from synapse.handlers.sync import (
|
|
ArchivedSyncResult,
|
|
InvitedSyncResult,
|
|
JoinedSyncResult,
|
|
KnockedSyncResult,
|
|
SyncConfig,
|
|
SyncResult,
|
|
)
|
|
from synapse.http.server import HttpServer
|
|
from synapse.http.servlet import RestServlet, parse_boolean, parse_integer, parse_string
|
|
from synapse.http.site import SynapseRequest
|
|
from synapse.logging.opentracing import trace_with_opname
|
|
from synapse.types import JsonDict, Requester, StreamToken
|
|
from synapse.util import json_decoder
|
|
|
|
from ._base import client_patterns, set_timeline_upper_limit
|
|
|
|
if TYPE_CHECKING:
|
|
from synapse.server import HomeServer
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class SyncRestServlet(RestServlet):
|
|
"""
|
|
|
|
GET parameters::
|
|
timeout(int): How long to wait for new events in milliseconds.
|
|
since(batch_token): Batch token when asking for incremental deltas.
|
|
set_presence(str): What state the device presence should be set to.
|
|
default is "online".
|
|
filter(filter_id): A filter to apply to the events returned.
|
|
|
|
Response JSON::
|
|
{
|
|
"next_batch": // batch token for the next /sync
|
|
"presence": // presence data for the user.
|
|
"rooms": {
|
|
"join": { // Joined rooms being updated.
|
|
"${room_id}": { // Id of the room being updated
|
|
"event_map": // Map of EventID -> event JSON.
|
|
"timeline": { // The recent events in the room if gap is "true"
|
|
"limited": // Was the per-room event limit exceeded?
|
|
// otherwise the next events in the room.
|
|
"events": [] // list of EventIDs in the "event_map".
|
|
"prev_batch": // back token for getting previous events.
|
|
}
|
|
"state": {"events": []} // list of EventIDs updating the
|
|
// current state to be what it should
|
|
// be at the end of the batch.
|
|
"ephemeral": {"events": []} // list of event objects
|
|
}
|
|
},
|
|
"invite": {}, // Invited rooms being updated.
|
|
"leave": {} // Archived rooms being updated.
|
|
}
|
|
}
|
|
"""
|
|
|
|
PATTERNS = client_patterns("/sync$")
|
|
ALLOWED_PRESENCE = {"online", "offline", "unavailable"}
|
|
CATEGORY = "Sync requests"
|
|
|
|
def __init__(self, hs: "HomeServer"):
|
|
super().__init__()
|
|
self.hs = hs
|
|
self.auth = hs.get_auth()
|
|
self.store = hs.get_datastores().main
|
|
self.sync_handler = hs.get_sync_handler()
|
|
self.clock = hs.get_clock()
|
|
self.filtering = hs.get_filtering()
|
|
self.presence_handler = hs.get_presence_handler()
|
|
self._server_notices_sender = hs.get_server_notices_sender()
|
|
self._event_serializer = hs.get_event_client_serializer()
|
|
self._msc2654_enabled = hs.config.experimental.msc2654_enabled
|
|
self._msc3773_enabled = hs.config.experimental.msc3773_enabled
|
|
|
|
async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
|
|
# This will always be set by the time Twisted calls us.
|
|
assert request.args is not None
|
|
|
|
if b"from" in request.args:
|
|
# /events used to use 'from', but /sync uses 'since'.
|
|
# Lets be helpful and whine if we see a 'from'.
|
|
raise SynapseError(
|
|
400, "'from' is not a valid query parameter. Did you mean 'since'?"
|
|
)
|
|
|
|
requester = await self.auth.get_user_by_req(request, allow_guest=True)
|
|
user = requester.user
|
|
device_id = requester.device_id
|
|
|
|
timeout = parse_integer(request, "timeout", default=0)
|
|
since = parse_string(request, "since")
|
|
set_presence = parse_string(
|
|
request,
|
|
"set_presence",
|
|
default="online",
|
|
allowed_values=self.ALLOWED_PRESENCE,
|
|
)
|
|
filter_id = parse_string(request, "filter")
|
|
full_state = parse_boolean(request, "full_state", default=False)
|
|
|
|
logger.debug(
|
|
"/sync: user=%r, timeout=%r, since=%r, "
|
|
"set_presence=%r, filter_id=%r, device_id=%r",
|
|
user,
|
|
timeout,
|
|
since,
|
|
set_presence,
|
|
filter_id,
|
|
device_id,
|
|
)
|
|
|
|
# Stream position of the last ignored users account data event for this user,
|
|
# if we're initial syncing.
|
|
# We include this in the request key to invalidate an initial sync
|
|
# in the response cache once the set of ignored users has changed.
|
|
# (We filter out ignored users from timeline events, so our sync response
|
|
# is invalid once the set of ignored users changes.)
|
|
last_ignore_accdata_streampos: Optional[int] = None
|
|
if not since:
|
|
# No `since`, so this is an initial sync.
|
|
last_ignore_accdata_streampos = await self.store.get_latest_stream_id_for_global_account_data_by_type_for_user(
|
|
user.to_string(), AccountDataTypes.IGNORED_USER_LIST
|
|
)
|
|
|
|
request_key = (
|
|
user,
|
|
timeout,
|
|
since,
|
|
filter_id,
|
|
full_state,
|
|
device_id,
|
|
last_ignore_accdata_streampos,
|
|
)
|
|
|
|
if filter_id is None:
|
|
filter_collection = self.filtering.DEFAULT_FILTER_COLLECTION
|
|
elif filter_id.startswith("{"):
|
|
try:
|
|
filter_object = json_decoder.decode(filter_id)
|
|
except Exception:
|
|
raise SynapseError(400, "Invalid filter JSON", errcode=Codes.NOT_JSON)
|
|
self.filtering.check_valid_filter(filter_object)
|
|
set_timeline_upper_limit(
|
|
filter_object, self.hs.config.server.filter_timeline_limit
|
|
)
|
|
filter_collection = FilterCollection(self.hs, filter_object)
|
|
else:
|
|
try:
|
|
filter_collection = await self.filtering.get_user_filter(
|
|
user, filter_id
|
|
)
|
|
except StoreError as err:
|
|
if err.code != 404:
|
|
raise
|
|
# fix up the description and errcode to be more useful
|
|
raise SynapseError(400, "No such filter", errcode=Codes.INVALID_PARAM)
|
|
|
|
sync_config = SyncConfig(
|
|
user=user,
|
|
filter_collection=filter_collection,
|
|
is_guest=requester.is_guest,
|
|
request_key=request_key,
|
|
device_id=device_id,
|
|
)
|
|
|
|
since_token = None
|
|
if since is not None:
|
|
since_token = await StreamToken.from_string(self.store, since)
|
|
|
|
# send any outstanding server notices to the user.
|
|
await self._server_notices_sender.on_user_syncing(user.to_string())
|
|
|
|
affect_presence = set_presence != PresenceState.OFFLINE
|
|
|
|
context = await self.presence_handler.user_syncing(
|
|
user.to_string(),
|
|
requester.device_id,
|
|
affect_presence=affect_presence,
|
|
presence_state=set_presence,
|
|
)
|
|
with context:
|
|
sync_result = await self.sync_handler.wait_for_sync_for_user(
|
|
requester,
|
|
sync_config,
|
|
since_token=since_token,
|
|
timeout=timeout,
|
|
full_state=full_state,
|
|
)
|
|
|
|
# the client may have disconnected by now; don't bother to serialize the
|
|
# response if so.
|
|
if request._disconnected:
|
|
logger.info("Client has disconnected; not serializing response.")
|
|
return 200, {}
|
|
|
|
time_now = self.clock.time_msec()
|
|
# We know that the the requester has an access token since appservices
|
|
# cannot use sync.
|
|
response_content = await self.encode_response(
|
|
time_now, sync_result, requester, filter_collection
|
|
)
|
|
|
|
logger.debug("Event formatting complete")
|
|
return 200, response_content
|
|
|
|
@trace_with_opname("sync.encode_response")
|
|
async def encode_response(
|
|
self,
|
|
time_now: int,
|
|
sync_result: SyncResult,
|
|
requester: Requester,
|
|
filter: FilterCollection,
|
|
) -> JsonDict:
|
|
logger.debug("Formatting events in sync response")
|
|
if filter.event_format == "client":
|
|
event_formatter = format_event_for_client_v2_without_room_id
|
|
elif filter.event_format == "federation":
|
|
event_formatter = format_event_raw
|
|
else:
|
|
raise Exception("Unknown event format %s" % (filter.event_format,))
|
|
|
|
serialize_options = SerializeEventConfig(
|
|
event_format=event_formatter,
|
|
requester=requester,
|
|
only_event_fields=filter.event_fields,
|
|
)
|
|
stripped_serialize_options = SerializeEventConfig(
|
|
event_format=event_formatter,
|
|
requester=requester,
|
|
include_stripped_room_state=True,
|
|
)
|
|
|
|
joined = await self.encode_joined(
|
|
sync_result.joined, time_now, serialize_options
|
|
)
|
|
|
|
invited = await self.encode_invited(
|
|
sync_result.invited, time_now, stripped_serialize_options
|
|
)
|
|
|
|
knocked = await self.encode_knocked(
|
|
sync_result.knocked, time_now, stripped_serialize_options
|
|
)
|
|
|
|
archived = await self.encode_archived(
|
|
sync_result.archived, time_now, serialize_options
|
|
)
|
|
|
|
logger.debug("building sync response dict")
|
|
|
|
response: JsonDict = defaultdict(dict)
|
|
response["next_batch"] = await sync_result.next_batch.to_string(self.store)
|
|
|
|
if sync_result.account_data:
|
|
response["account_data"] = {"events": sync_result.account_data}
|
|
if sync_result.presence:
|
|
response["presence"] = SyncRestServlet.encode_presence(
|
|
sync_result.presence, time_now
|
|
)
|
|
|
|
if sync_result.to_device:
|
|
response["to_device"] = {"events": sync_result.to_device}
|
|
|
|
if sync_result.device_lists.changed:
|
|
response["device_lists"]["changed"] = list(sync_result.device_lists.changed)
|
|
if sync_result.device_lists.left:
|
|
response["device_lists"]["left"] = list(sync_result.device_lists.left)
|
|
|
|
# We always include this because https://github.com/vector-im/element-android/issues/3725
|
|
# The spec isn't terribly clear on when this can be omitted and how a client would tell
|
|
# the difference between "no keys present" and "nothing changed" in terms of whole field
|
|
# absent / individual key type entry absent
|
|
# Corresponding synapse issue: https://github.com/matrix-org/synapse/issues/10456
|
|
response["device_one_time_keys_count"] = sync_result.device_one_time_keys_count
|
|
|
|
# https://github.com/matrix-org/matrix-doc/blob/54255851f642f84a4f1aaf7bc063eebe3d76752b/proposals/2732-olm-fallback-keys.md
|
|
# states that this field should always be included, as long as the server supports the feature.
|
|
response[
|
|
"org.matrix.msc2732.device_unused_fallback_key_types"
|
|
] = sync_result.device_unused_fallback_key_types
|
|
response[
|
|
"device_unused_fallback_key_types"
|
|
] = sync_result.device_unused_fallback_key_types
|
|
|
|
if joined:
|
|
response["rooms"][Membership.JOIN] = joined
|
|
if invited:
|
|
response["rooms"][Membership.INVITE] = invited
|
|
if knocked:
|
|
response["rooms"][Membership.KNOCK] = knocked
|
|
if archived:
|
|
response["rooms"][Membership.LEAVE] = archived
|
|
|
|
return response
|
|
|
|
@staticmethod
|
|
def encode_presence(events: List[UserPresenceState], time_now: int) -> JsonDict:
|
|
return {
|
|
"events": [
|
|
{
|
|
"type": EduTypes.PRESENCE,
|
|
"sender": event.user_id,
|
|
"content": format_user_presence_state(
|
|
event, time_now, include_user_id=False
|
|
),
|
|
}
|
|
for event in events
|
|
]
|
|
}
|
|
|
|
@trace_with_opname("sync.encode_joined")
|
|
async def encode_joined(
|
|
self,
|
|
rooms: List[JoinedSyncResult],
|
|
time_now: int,
|
|
serialize_options: SerializeEventConfig,
|
|
) -> JsonDict:
|
|
"""
|
|
Encode the joined rooms in a sync result
|
|
|
|
Args:
|
|
rooms: list of sync results for rooms this user is joined to
|
|
time_now: current time - used as a baseline for age calculations
|
|
serialize_options: Event serializer options
|
|
Returns:
|
|
The joined rooms list, in our response format
|
|
"""
|
|
joined = {}
|
|
for room in rooms:
|
|
joined[room.room_id] = await self.encode_room(
|
|
room, time_now, joined=True, serialize_options=serialize_options
|
|
)
|
|
|
|
return joined
|
|
|
|
@trace_with_opname("sync.encode_invited")
|
|
async def encode_invited(
|
|
self,
|
|
rooms: List[InvitedSyncResult],
|
|
time_now: int,
|
|
serialize_options: SerializeEventConfig,
|
|
) -> JsonDict:
|
|
"""
|
|
Encode the invited rooms in a sync result
|
|
|
|
Args:
|
|
rooms: list of sync results for rooms this user is invited to
|
|
time_now: current time - used as a baseline for age calculations
|
|
serialize_options: Event serializer options
|
|
|
|
Returns:
|
|
The invited rooms list, in our response format
|
|
"""
|
|
invited = {}
|
|
for room in rooms:
|
|
invite = self._event_serializer.serialize_event(
|
|
room.invite, time_now, config=serialize_options
|
|
)
|
|
unsigned = dict(invite.get("unsigned", {}))
|
|
invite["unsigned"] = unsigned
|
|
invited_state = list(unsigned.pop("invite_room_state", []))
|
|
invited_state.append(invite)
|
|
invited[room.room_id] = {"invite_state": {"events": invited_state}}
|
|
|
|
return invited
|
|
|
|
@trace_with_opname("sync.encode_knocked")
|
|
async def encode_knocked(
|
|
self,
|
|
rooms: List[KnockedSyncResult],
|
|
time_now: int,
|
|
serialize_options: SerializeEventConfig,
|
|
) -> Dict[str, Dict[str, Any]]:
|
|
"""
|
|
Encode the rooms we've knocked on in a sync result.
|
|
|
|
Args:
|
|
rooms: list of sync results for rooms this user is knocking on
|
|
time_now: current time - used as a baseline for age calculations
|
|
serialize_options: Event serializer options
|
|
|
|
Returns:
|
|
The list of rooms the user has knocked on, in our response format.
|
|
"""
|
|
knocked = {}
|
|
for room in rooms:
|
|
knock = self._event_serializer.serialize_event(
|
|
room.knock, time_now, config=serialize_options
|
|
)
|
|
|
|
# Extract the `unsigned` key from the knock event.
|
|
# This is where we (cheekily) store the knock state events
|
|
unsigned = knock.setdefault("unsigned", {})
|
|
|
|
# Duplicate the dictionary in order to avoid modifying the original
|
|
unsigned = dict(unsigned)
|
|
|
|
# Extract the stripped room state from the unsigned dict
|
|
# This is for clients to get a little bit of information about
|
|
# the room they've knocked on, without revealing any sensitive information
|
|
knocked_state = list(unsigned.pop("knock_room_state", []))
|
|
|
|
# Append the actual knock membership event itself as well. This provides
|
|
# the client with:
|
|
#
|
|
# * A knock state event that they can use for easier internal tracking
|
|
# * The rough timestamp of when the knock occurred contained within the event
|
|
knocked_state.append(knock)
|
|
|
|
# Build the `knock_state` dictionary, which will contain the state of the
|
|
# room that the client has knocked on
|
|
knocked[room.room_id] = {"knock_state": {"events": knocked_state}}
|
|
|
|
return knocked
|
|
|
|
@trace_with_opname("sync.encode_archived")
|
|
async def encode_archived(
|
|
self,
|
|
rooms: List[ArchivedSyncResult],
|
|
time_now: int,
|
|
serialize_options: SerializeEventConfig,
|
|
) -> JsonDict:
|
|
"""
|
|
Encode the archived rooms in a sync result
|
|
|
|
Args:
|
|
rooms: list of sync results for rooms this user is joined to
|
|
time_now: current time - used as a baseline for age calculations
|
|
serialize_options: Event serializer options
|
|
Returns:
|
|
The archived rooms list, in our response format
|
|
"""
|
|
joined = {}
|
|
for room in rooms:
|
|
joined[room.room_id] = await self.encode_room(
|
|
room, time_now, joined=False, serialize_options=serialize_options
|
|
)
|
|
|
|
return joined
|
|
|
|
async def encode_room(
|
|
self,
|
|
room: Union[JoinedSyncResult, ArchivedSyncResult],
|
|
time_now: int,
|
|
joined: bool,
|
|
serialize_options: SerializeEventConfig,
|
|
) -> JsonDict:
|
|
"""
|
|
Args:
|
|
room: sync result for a single room
|
|
time_now: current time - used as a baseline for age calculations
|
|
token_id: ID of the user's auth token - used for namespacing
|
|
of transaction IDs
|
|
joined: True if the user is joined to this room - will mean
|
|
we handle ephemeral events
|
|
only_fields: Optional. The list of event fields to include.
|
|
event_formatter: function to convert from federation format
|
|
to client format
|
|
Returns:
|
|
The room, encoded in our response format
|
|
"""
|
|
state_dict = room.state
|
|
timeline_events = room.timeline.events
|
|
|
|
state_events = state_dict.values()
|
|
|
|
for event in itertools.chain(state_events, timeline_events):
|
|
# We've had bug reports that events were coming down under the
|
|
# wrong room.
|
|
if event.room_id != room.room_id:
|
|
logger.warning(
|
|
"Event %r is under room %r instead of %r",
|
|
event.event_id,
|
|
room.room_id,
|
|
event.room_id,
|
|
)
|
|
|
|
serialized_state = self._event_serializer.serialize_events(
|
|
state_events, time_now, config=serialize_options
|
|
)
|
|
serialized_timeline = self._event_serializer.serialize_events(
|
|
timeline_events,
|
|
time_now,
|
|
config=serialize_options,
|
|
bundle_aggregations=room.timeline.bundled_aggregations,
|
|
)
|
|
|
|
account_data = room.account_data
|
|
|
|
result: JsonDict = {
|
|
"timeline": {
|
|
"events": serialized_timeline,
|
|
"prev_batch": await room.timeline.prev_batch.to_string(self.store),
|
|
"limited": room.timeline.limited,
|
|
},
|
|
"state": {"events": serialized_state},
|
|
"account_data": {"events": account_data},
|
|
}
|
|
|
|
if joined:
|
|
assert isinstance(room, JoinedSyncResult)
|
|
ephemeral_events = room.ephemeral
|
|
result["ephemeral"] = {"events": ephemeral_events}
|
|
result["unread_notifications"] = room.unread_notifications
|
|
if room.unread_thread_notifications:
|
|
result["unread_thread_notifications"] = room.unread_thread_notifications
|
|
if self._msc3773_enabled:
|
|
result[
|
|
"org.matrix.msc3773.unread_thread_notifications"
|
|
] = room.unread_thread_notifications
|
|
result["summary"] = room.summary
|
|
if self._msc2654_enabled:
|
|
result["org.matrix.msc2654.unread_count"] = room.unread_count
|
|
|
|
return result
|
|
|
|
|
|
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
|
|
SyncRestServlet(hs).register(http_server)
|