diff options
Diffstat (limited to 'synapse/events')
| -rw-r--r-- | synapse/events/utils.py | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/synapse/events/utils.py b/synapse/events/utils.py index 5022e0fcb3..0f8a3b5ad8 100644 --- a/synapse/events/utils.py +++ b/synapse/events/utils.py @@ -22,6 +22,7 @@ from synapse.api.constants import EventTypes, RelationTypes from synapse.api.errors import Codes, SynapseError from synapse.api.room_versions import RoomVersion from synapse.util.async_helpers import yieldable_gather_results +from synapse.util.frozenutils import unfreeze from . import EventBase @@ -402,10 +403,19 @@ class EventClientSerializer: # If there is an edit replace the content, preserving existing # relations. + # Ensure we take copies of the edit content, otherwise we risk modifying + # the original event. + edit_content = edit.content.copy() + + # Unfreeze the event content if necessary, so that we may modify it below + edit_content = unfreeze(edit_content) + serialized_event["content"] = edit_content.get("m.new_content", {}) + + # Check for existing relations relations = event.content.get("m.relates_to") - serialized_event["content"] = edit.content.get("m.new_content", {}) if relations: - serialized_event["content"]["m.relates_to"] = relations + # Keep the relations, ensuring we use a dict copy of the original + serialized_event["content"]["m.relates_to"] = relations.copy() else: serialized_event["content"].pop("m.relates_to", None) |