implement room.ephemeral.(not_)rooms filter on /sync

src/api/client_server/sync.rs

@@ -1101,6 +1101,7 @@ async fn load_joined_room(
 		.map(|(_, pdu)| pdu.to_sync_room_event())
 		.collect();
 
+	let edus = if filter.room.ephemeral.room_allowed(room_id) {
 		let mut edus: Vec<_> = services()
 			.rooms
 			.read_receipt
@@ -1119,6 +1120,11 @@ async fn load_joined_room(
 			);
 		}
 
+		edus
+	} else {
+		vec![]
+	};
+
 	// Save the state after this sync so we can send the correct state diff next
 	// sync
 	services()

src/utils/filter.rs

@@ -137,6 +137,7 @@ pub(crate) struct CompiledFilterDefinition<'a> {
 pub(crate) struct CompiledRoomFilter<'a> {
 	rooms: AllowDenyList<'a, RoomId>,
 	pub(crate) timeline: CompiledRoomEventFilter<'a>,
+	pub(crate) ephemeral: CompiledRoomEventFilter<'a>,
 	pub(crate) state: CompiledRoomEventFilter<'a>,
 }
 
@@ -168,6 +169,7 @@ impl<'a> TryFrom<&'a RoomFilter> for CompiledRoomFilter<'a> {
 			// all of the sub-filters
 			rooms: AllowDenyList::from_slices(source.rooms.as_deref(), &source.not_rooms),
 			timeline: (&source.timeline).try_into()?,
+			ephemeral: (&source.ephemeral).try_into()?,
 			state: (&source.state).try_into()?,
 		})
 	}