No longer permit empty body when sending receipts (#12709)

1 files changed, 1 insertions, 12 deletions

diff --git a/synapse/rest/client/receipts.py b/synapse/rest/client/receipts.py
index f9caab6635..4b03eb876b 100644
--- a/synapse/rest/client/receipts.py
+++ b/synapse/rest/client/receipts.py
@@ -13,12 +13,10 @@
 # limitations under the License.
 
 import logging
-import re
 from typing import TYPE_CHECKING, Tuple
 
 from synapse.api.constants import ReceiptTypes
 from synapse.api.errors import 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
@@ -26,8 +24,6 @@ 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
 
@@ -69,14 +65,7 @@ class ReceiptRestServlet(RestServlet):
         ):
             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
-        # This call makes sure possible empty body is handled correctly
-        parse_json_object_from_request(request, allow_empty_body)
+        parse_json_object_from_request(request, allow_empty_body=False)
 
         await self.presence_handler.bump_presence_active_time(requester.user)