707 lines
22 KiB
Python
707 lines
22 KiB
Python
# Copyright 2021 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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# 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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from typing import Dict, List, Mapping, Optional, Sequence, Tuple, Type, Union
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from typing_extensions import Literal
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import synapse
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from synapse.api.errors import Codes, SynapseError
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from synapse.api.room_versions import RoomVersions
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from synapse.api.urls import FEDERATION_UNSTABLE_PREFIX, FEDERATION_V2_PREFIX
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from synapse.federation.transport.server._base import (
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Authenticator,
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BaseFederationServlet,
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)
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from synapse.http.servlet import (
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parse_boolean_from_args,
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parse_integer_from_args,
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parse_string_from_args,
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parse_strings_from_args,
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)
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from synapse.server import HomeServer
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from synapse.types import JsonDict
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from synapse.util.ratelimitutils import FederationRateLimiter
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from synapse.util.versionstring import get_version_string
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logger = logging.getLogger(__name__)
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class BaseFederationServerServlet(BaseFederationServlet):
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"""Abstract base class for federation servlet classes which provides a federation server handler.
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See BaseFederationServlet for more information.
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"""
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def __init__(
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self,
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hs: HomeServer,
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authenticator: Authenticator,
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ratelimiter: FederationRateLimiter,
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server_name: str,
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):
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super().__init__(hs, authenticator, ratelimiter, server_name)
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self.handler = hs.get_federation_server()
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class FederationSendServlet(BaseFederationServerServlet):
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PATH = "/send/(?P<transaction_id>[^/]*)/?"
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# We ratelimit manually in the handler as we queue up the requests and we
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# don't want to fill up the ratelimiter with blocked requests.
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RATELIMIT = False
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# This is when someone is trying to send us a bunch of data.
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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transaction_id: str,
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) -> Tuple[int, JsonDict]:
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"""Called on PUT /send/<transaction_id>/
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Args:
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transaction_id: The transaction_id associated with this request. This
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is *not* None.
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Returns:
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Tuple of `(code, response)`, where
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`response` is a python dict to be converted into JSON that is
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used as the response body.
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"""
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# Parse the request
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try:
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transaction_data = content
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logger.debug("Decoded %s: %s", transaction_id, str(transaction_data))
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logger.info(
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"Received txn %s from %s. (PDUs: %d, EDUs: %d)",
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transaction_id,
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origin,
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len(transaction_data.get("pdus", [])),
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len(transaction_data.get("edus", [])),
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)
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except Exception as e:
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logger.exception(e)
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return 400, {"error": "Invalid transaction"}
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code, response = await self.handler.on_incoming_transaction(
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origin, transaction_id, self.server_name, transaction_data
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)
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return code, response
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class FederationEventServlet(BaseFederationServerServlet):
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PATH = "/event/(?P<event_id>[^/]*)/?"
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# This is when someone asks for a data item for a given server data_id pair.
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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event_id: str,
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) -> Tuple[int, Union[JsonDict, str]]:
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return await self.handler.on_pdu_request(origin, event_id)
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class FederationStateV1Servlet(BaseFederationServerServlet):
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PATH = "/state/(?P<room_id>[^/]*)/?"
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# This is when someone asks for all data for a given room.
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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room_id: str,
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) -> Tuple[int, JsonDict]:
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return await self.handler.on_room_state_request(
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origin,
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room_id,
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parse_string_from_args(query, "event_id", None, required=False),
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)
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class FederationStateIdsServlet(BaseFederationServerServlet):
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PATH = "/state_ids/(?P<room_id>[^/]*)/?"
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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room_id: str,
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) -> Tuple[int, JsonDict]:
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return await self.handler.on_state_ids_request(
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origin,
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room_id,
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parse_string_from_args(query, "event_id", None, required=True),
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)
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class FederationBackfillServlet(BaseFederationServerServlet):
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PATH = "/backfill/(?P<room_id>[^/]*)/?"
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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room_id: str,
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) -> Tuple[int, JsonDict]:
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versions = [x.decode("ascii") for x in query[b"v"]]
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limit = parse_integer_from_args(query, "limit", None)
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if not limit:
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return 400, {"error": "Did not include limit param"}
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return await self.handler.on_backfill_request(origin, room_id, versions, limit)
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class FederationQueryServlet(BaseFederationServerServlet):
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PATH = "/query/(?P<query_type>[^/]*)"
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# This is when we receive a server-server Query
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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query_type: str,
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) -> Tuple[int, JsonDict]:
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args = {k.decode("utf8"): v[0].decode("utf-8") for k, v in query.items()}
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args["origin"] = origin
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return await self.handler.on_query_request(query_type, args)
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class FederationMakeJoinServlet(BaseFederationServerServlet):
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PATH = "/make_join/(?P<room_id>[^/]*)/(?P<user_id>[^/]*)"
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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room_id: str,
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user_id: str,
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) -> Tuple[int, JsonDict]:
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"""
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Args:
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origin: The authenticated server_name of the calling server
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content: (GETs don't have bodies)
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query: Query params from the request.
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**kwargs: the dict mapping keys to path components as specified in
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the path match regexp.
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Returns:
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Tuple of (response code, response object)
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"""
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supported_versions = parse_strings_from_args(query, "ver", encoding="utf-8")
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if supported_versions is None:
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supported_versions = ["1"]
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result = await self.handler.on_make_join_request(
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origin, room_id, user_id, supported_versions=supported_versions
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)
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return 200, result
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class FederationMakeLeaveServlet(BaseFederationServerServlet):
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PATH = "/make_leave/(?P<room_id>[^/]*)/(?P<user_id>[^/]*)"
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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room_id: str,
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user_id: str,
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) -> Tuple[int, JsonDict]:
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result = await self.handler.on_make_leave_request(origin, room_id, user_id)
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return 200, result
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class FederationV1SendLeaveServlet(BaseFederationServerServlet):
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PATH = "/send_leave/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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event_id: str,
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) -> Tuple[int, Tuple[int, JsonDict]]:
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result = await self.handler.on_send_leave_request(origin, content, room_id)
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return 200, (200, result)
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class FederationV2SendLeaveServlet(BaseFederationServerServlet):
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PATH = "/send_leave/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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PREFIX = FEDERATION_V2_PREFIX
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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event_id: str,
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) -> Tuple[int, JsonDict]:
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result = await self.handler.on_send_leave_request(origin, content, room_id)
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return 200, result
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class FederationMakeKnockServlet(BaseFederationServerServlet):
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PATH = "/make_knock/(?P<room_id>[^/]*)/(?P<user_id>[^/]*)"
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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room_id: str,
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user_id: str,
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) -> Tuple[int, JsonDict]:
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# Retrieve the room versions the remote homeserver claims to support
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supported_versions = parse_strings_from_args(
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query, "ver", required=True, encoding="utf-8"
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)
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result = await self.handler.on_make_knock_request(
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origin, room_id, user_id, supported_versions=supported_versions
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)
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return 200, result
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class FederationV1SendKnockServlet(BaseFederationServerServlet):
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PATH = "/send_knock/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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event_id: str,
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) -> Tuple[int, JsonDict]:
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result = await self.handler.on_send_knock_request(origin, content, room_id)
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return 200, result
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class FederationEventAuthServlet(BaseFederationServerServlet):
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PATH = "/event_auth/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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room_id: str,
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event_id: str,
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) -> Tuple[int, JsonDict]:
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return await self.handler.on_event_auth(origin, room_id, event_id)
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class FederationV1SendJoinServlet(BaseFederationServerServlet):
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PATH = "/send_join/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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event_id: str,
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) -> Tuple[int, Tuple[int, JsonDict]]:
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# TODO(paul): assert that event_id parsed from path actually
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# match those given in content
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result = await self.handler.on_send_join_request(origin, content, room_id)
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return 200, (200, result)
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class FederationV2SendJoinServlet(BaseFederationServerServlet):
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PATH = "/send_join/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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PREFIX = FEDERATION_V2_PREFIX
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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event_id: str,
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) -> Tuple[int, JsonDict]:
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# TODO(paul): assert that event_id parsed from path actually
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# match those given in content
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result = await self.handler.on_send_join_request(origin, content, room_id)
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return 200, result
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class FederationV1InviteServlet(BaseFederationServerServlet):
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PATH = "/invite/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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event_id: str,
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) -> Tuple[int, Tuple[int, JsonDict]]:
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# We don't get a room version, so we have to assume its EITHER v1 or
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# v2. This is "fine" as the only difference between V1 and V2 is the
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# state resolution algorithm, and we don't use that for processing
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# invites
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result = await self.handler.on_invite_request(
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origin, content, room_version_id=RoomVersions.V1.identifier
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)
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# V1 federation API is defined to return a content of `[200, {...}]`
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# due to a historical bug.
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return 200, (200, result)
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class FederationV2InviteServlet(BaseFederationServerServlet):
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PATH = "/invite/(?P<room_id>[^/]*)/(?P<event_id>[^/]*)"
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PREFIX = FEDERATION_V2_PREFIX
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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event_id: str,
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) -> Tuple[int, JsonDict]:
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# TODO(paul): assert that room_id/event_id parsed from path actually
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# match those given in content
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room_version = content["room_version"]
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event = content["event"]
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invite_room_state = content["invite_room_state"]
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# Synapse expects invite_room_state to be in unsigned, as it is in v1
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# API
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event.setdefault("unsigned", {})["invite_room_state"] = invite_room_state
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result = await self.handler.on_invite_request(
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origin, event, room_version_id=room_version
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)
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return 200, result
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class FederationThirdPartyInviteExchangeServlet(BaseFederationServerServlet):
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PATH = "/exchange_third_party_invite/(?P<room_id>[^/]*)"
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async def on_PUT(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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) -> Tuple[int, JsonDict]:
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await self.handler.on_exchange_third_party_invite_request(content)
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return 200, {}
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class FederationClientKeysQueryServlet(BaseFederationServerServlet):
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PATH = "/user/keys/query"
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async def on_POST(
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self, origin: str, content: JsonDict, query: Dict[bytes, List[bytes]]
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) -> Tuple[int, JsonDict]:
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return await self.handler.on_query_client_keys(origin, content)
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class FederationUserDevicesQueryServlet(BaseFederationServerServlet):
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PATH = "/user/devices/(?P<user_id>[^/]*)"
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async def on_GET(
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self,
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origin: str,
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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user_id: str,
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) -> Tuple[int, JsonDict]:
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return await self.handler.on_query_user_devices(origin, user_id)
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class FederationClientKeysClaimServlet(BaseFederationServerServlet):
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PATH = "/user/keys/claim"
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async def on_POST(
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self, origin: str, content: JsonDict, query: Dict[bytes, List[bytes]]
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) -> Tuple[int, JsonDict]:
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response = await self.handler.on_claim_client_keys(origin, content)
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return 200, response
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class FederationGetMissingEventsServlet(BaseFederationServerServlet):
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# TODO(paul): Why does this path alone end with "/?" optional?
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PATH = "/get_missing_events/(?P<room_id>[^/]*)/?"
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async def on_POST(
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self,
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origin: str,
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content: JsonDict,
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query: Dict[bytes, List[bytes]],
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room_id: str,
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) -> Tuple[int, JsonDict]:
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limit = int(content.get("limit", 10))
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earliest_events = content.get("earliest_events", [])
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latest_events = content.get("latest_events", [])
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result = await self.handler.on_get_missing_events(
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origin,
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room_id=room_id,
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earliest_events=earliest_events,
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latest_events=latest_events,
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limit=limit,
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)
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return 200, result
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class On3pidBindServlet(BaseFederationServerServlet):
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PATH = "/3pid/onbind"
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REQUIRE_AUTH = False
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async def on_POST(
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self, origin: Optional[str], content: JsonDict, query: Dict[bytes, List[bytes]]
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) -> Tuple[int, JsonDict]:
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if "invites" in content:
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last_exception = None
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for invite in content["invites"]:
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try:
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if "signed" not in invite or "token" not in invite["signed"]:
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message = (
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"Rejecting received notification of third-"
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"party invite without signed: %s" % (invite,)
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)
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logger.info(message)
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raise SynapseError(400, message)
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await self.handler.exchange_third_party_invite(
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invite["sender"],
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invite["mxid"],
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invite["room_id"],
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invite["signed"],
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)
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except Exception as e:
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last_exception = e
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if last_exception:
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raise last_exception
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return 200, {}
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class FederationVersionServlet(BaseFederationServlet):
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PATH = "/version"
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REQUIRE_AUTH = False
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async def on_GET(
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self,
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origin: Optional[str],
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content: Literal[None],
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query: Dict[bytes, List[bytes]],
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) -> Tuple[int, JsonDict]:
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return (
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200,
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{"server": {"name": "Synapse", "version": get_version_string(synapse)}},
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|
)
|
|
|
|
|
|
class FederationSpaceSummaryServlet(BaseFederationServlet):
|
|
PREFIX = FEDERATION_UNSTABLE_PREFIX + "/org.matrix.msc2946"
|
|
PATH = "/spaces/(?P<room_id>[^/]*)"
|
|
|
|
def __init__(
|
|
self,
|
|
hs: HomeServer,
|
|
authenticator: Authenticator,
|
|
ratelimiter: FederationRateLimiter,
|
|
server_name: str,
|
|
):
|
|
super().__init__(hs, authenticator, ratelimiter, server_name)
|
|
self.handler = hs.get_room_summary_handler()
|
|
|
|
async def on_GET(
|
|
self,
|
|
origin: str,
|
|
content: Literal[None],
|
|
query: Mapping[bytes, Sequence[bytes]],
|
|
room_id: str,
|
|
) -> Tuple[int, JsonDict]:
|
|
suggested_only = parse_boolean_from_args(query, "suggested_only", default=False)
|
|
|
|
max_rooms_per_space = parse_integer_from_args(query, "max_rooms_per_space")
|
|
if max_rooms_per_space is not None and max_rooms_per_space < 0:
|
|
raise SynapseError(
|
|
400,
|
|
"Value for 'max_rooms_per_space' must be a non-negative integer",
|
|
Codes.BAD_JSON,
|
|
)
|
|
|
|
exclude_rooms = parse_strings_from_args(query, "exclude_rooms", default=[])
|
|
|
|
return 200, await self.handler.federation_space_summary(
|
|
origin, room_id, suggested_only, max_rooms_per_space, exclude_rooms
|
|
)
|
|
|
|
# TODO When switching to the stable endpoint, remove the POST handler.
|
|
async def on_POST(
|
|
self,
|
|
origin: str,
|
|
content: JsonDict,
|
|
query: Mapping[bytes, Sequence[bytes]],
|
|
room_id: str,
|
|
) -> Tuple[int, JsonDict]:
|
|
suggested_only = content.get("suggested_only", False)
|
|
if not isinstance(suggested_only, bool):
|
|
raise SynapseError(
|
|
400, "'suggested_only' must be a boolean", Codes.BAD_JSON
|
|
)
|
|
|
|
exclude_rooms = content.get("exclude_rooms", [])
|
|
if not isinstance(exclude_rooms, list) or any(
|
|
not isinstance(x, str) for x in exclude_rooms
|
|
):
|
|
raise SynapseError(400, "bad value for 'exclude_rooms'", Codes.BAD_JSON)
|
|
|
|
max_rooms_per_space = content.get("max_rooms_per_space")
|
|
if max_rooms_per_space is not None:
|
|
if not isinstance(max_rooms_per_space, int):
|
|
raise SynapseError(
|
|
400, "bad value for 'max_rooms_per_space'", Codes.BAD_JSON
|
|
)
|
|
if max_rooms_per_space < 0:
|
|
raise SynapseError(
|
|
400,
|
|
"Value for 'max_rooms_per_space' must be a non-negative integer",
|
|
Codes.BAD_JSON,
|
|
)
|
|
|
|
return 200, await self.handler.federation_space_summary(
|
|
origin, room_id, suggested_only, max_rooms_per_space, exclude_rooms
|
|
)
|
|
|
|
|
|
class FederationRoomHierarchyServlet(BaseFederationServlet):
|
|
PREFIX = FEDERATION_UNSTABLE_PREFIX + "/org.matrix.msc2946"
|
|
PATH = "/hierarchy/(?P<room_id>[^/]*)"
|
|
|
|
def __init__(
|
|
self,
|
|
hs: HomeServer,
|
|
authenticator: Authenticator,
|
|
ratelimiter: FederationRateLimiter,
|
|
server_name: str,
|
|
):
|
|
super().__init__(hs, authenticator, ratelimiter, server_name)
|
|
self.handler = hs.get_room_summary_handler()
|
|
|
|
async def on_GET(
|
|
self,
|
|
origin: str,
|
|
content: Literal[None],
|
|
query: Mapping[bytes, Sequence[bytes]],
|
|
room_id: str,
|
|
) -> Tuple[int, JsonDict]:
|
|
suggested_only = parse_boolean_from_args(query, "suggested_only", default=False)
|
|
return 200, await self.handler.get_federation_hierarchy(
|
|
origin, room_id, suggested_only
|
|
)
|
|
|
|
|
|
class RoomComplexityServlet(BaseFederationServlet):
|
|
"""
|
|
Indicates to other servers how complex (and therefore likely
|
|
resource-intensive) a public room this server knows about is.
|
|
"""
|
|
|
|
PATH = "/rooms/(?P<room_id>[^/]*)/complexity"
|
|
PREFIX = FEDERATION_UNSTABLE_PREFIX
|
|
|
|
def __init__(
|
|
self,
|
|
hs: HomeServer,
|
|
authenticator: Authenticator,
|
|
ratelimiter: FederationRateLimiter,
|
|
server_name: str,
|
|
):
|
|
super().__init__(hs, authenticator, ratelimiter, server_name)
|
|
self._store = self.hs.get_datastore()
|
|
|
|
async def on_GET(
|
|
self,
|
|
origin: str,
|
|
content: Literal[None],
|
|
query: Dict[bytes, List[bytes]],
|
|
room_id: str,
|
|
) -> Tuple[int, JsonDict]:
|
|
is_public = await self._store.is_room_world_readable_or_publicly_joinable(
|
|
room_id
|
|
)
|
|
|
|
if not is_public:
|
|
raise SynapseError(404, "Room not found", errcode=Codes.INVALID_PARAM)
|
|
|
|
complexity = await self._store.get_room_complexity(room_id)
|
|
return 200, complexity
|
|
|
|
|
|
FEDERATION_SERVLET_CLASSES: Tuple[Type[BaseFederationServlet], ...] = (
|
|
FederationSendServlet,
|
|
FederationEventServlet,
|
|
FederationStateV1Servlet,
|
|
FederationStateIdsServlet,
|
|
FederationBackfillServlet,
|
|
FederationQueryServlet,
|
|
FederationMakeJoinServlet,
|
|
FederationMakeLeaveServlet,
|
|
FederationEventServlet,
|
|
FederationV1SendJoinServlet,
|
|
FederationV2SendJoinServlet,
|
|
FederationV1SendLeaveServlet,
|
|
FederationV2SendLeaveServlet,
|
|
FederationV1InviteServlet,
|
|
FederationV2InviteServlet,
|
|
FederationGetMissingEventsServlet,
|
|
FederationEventAuthServlet,
|
|
FederationClientKeysQueryServlet,
|
|
FederationUserDevicesQueryServlet,
|
|
FederationClientKeysClaimServlet,
|
|
FederationThirdPartyInviteExchangeServlet,
|
|
On3pidBindServlet,
|
|
FederationVersionServlet,
|
|
RoomComplexityServlet,
|
|
FederationSpaceSummaryServlet,
|
|
FederationRoomHierarchyServlet,
|
|
FederationV1SendKnockServlet,
|
|
FederationMakeKnockServlet,
|
|
)
|