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# 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 logging
import re
from typing import TYPE_CHECKING, Tuple
from synapse.api.constants import ReadReceiptEventFields, ReceiptTypes
from synapse.api.errors import Codes, SynapseError
from synapse.http import get_request_user_agent
from synapse.http.server import HttpServer
from synapse.http.servlet import RestServlet, parse_json_object_from_request
from synapse.http.site import SynapseRequest
from synapse.types import JsonDict
from ._base import client_patterns
pattern = re.compile(r"(?:Element|SchildiChat)/1\.[012]\.")
if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
class ReceiptRestServlet(RestServlet):
PATTERNS = client_patterns(
"/rooms/(?P<room_id>[^/]*)"
"/receipt/(?P<receipt_type>[^/]*)"
"/(?P<event_id>[^/]*)$"
)
def __init__(self, hs: "HomeServer"):
super().__init__()
self.hs = hs
self.auth = hs.get_auth()
self.receipts_handler = hs.get_receipts_handler()
self.presence_handler = hs.get_presence_handler()
async def on_POST(
self, request: SynapseRequest, room_id: str, receipt_type: str, event_id: str
) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
if receipt_type != ReceiptTypes.READ:
raise SynapseError(400, "Receipt type must be 'm.read'")
# Do not allow older SchildiChat and Element Android clients (prior to Element/1.[012].x) to send an empty body.
user_agent = get_request_user_agent(request)
allow_empty_body = False
if "Android" in user_agent:
if pattern.match(user_agent) or "Riot" in user_agent:
allow_empty_body = True
body = parse_json_object_from_request(request, allow_empty_body)
hidden = body.get(ReadReceiptEventFields.MSC2285_HIDDEN, False)
if not isinstance(hidden, bool):
raise SynapseError(
400,
"Param %s must be a boolean, if given"
% ReadReceiptEventFields.MSC2285_HIDDEN,
Codes.BAD_JSON,
)
await self.presence_handler.bump_presence_active_time(requester.user)
await self.receipts_handler.received_client_receipt(
room_id,
receipt_type,
user_id=requester.user.to_string(),
event_id=event_id,
hidden=hidden,
)
return 200, {}
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
ReceiptRestServlet(hs).register(http_server)
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