diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index c955a86be0..593c0cc6f1 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -15,6 +15,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
+import random
from typing import TYPE_CHECKING, Dict, List, Optional, Tuple
from canonicaljson import encode_canonical_json
@@ -34,6 +35,7 @@ from synapse.api.errors import (
Codes,
ConsentNotGivenError,
NotFoundError,
+ ShadowBanError,
SynapseError,
)
from synapse.api.room_versions import KNOWN_ROOM_VERSIONS, RoomVersions
@@ -716,12 +718,20 @@ class EventCreationHandler(object):
event_dict: dict,
ratelimit: bool = True,
txn_id: Optional[str] = None,
+ ignore_shadow_ban: bool = False,
) -> Tuple[EventBase, int]:
"""
Creates an event, then sends it.
See self.create_event and self.send_nonmember_event.
+
+ Raises:
+ ShadowBanError if the requester has been shadow-banned.
"""
+ if not ignore_shadow_ban and requester.shadow_banned:
+ # We randomly sleep a bit just to annoy the requester.
+ await self.clock.sleep(random.randint(1, 10))
+ raise ShadowBanError()
# We limit the number of concurrent event sends in a room so that we
# don't fork the DAG too much. If we don't limit then we can end up in
|
