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prevent multiple checks if a new room key is better

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This commit is contained in:
Bruno Windels 2021-03-05 10:07:48 +01:00
parent d08c41c13a
commit 5682e715e6
1 changed files with 4 additions and 2 deletions
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6
src/matrix/e2ee/megolm/decryption/RoomKey.js
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@ -6,9 +6,10 @@ export class BaseRoomKey {
this._isBetter = null; this._isBetter = null;
} }
async createSessionInfo(olm, pickleKey, txn) { async createSessionInfo(olm, pickleKey, txn) {
if (this._isBetter === false) {
return;
}
const session = new olm.InboundGroupSession(); const session = new olm.InboundGroupSession();
try { try {
this._loadSessionKey(session); this._loadSessionKey(session);
@ -32,6 +33,7 @@ export class BaseRoomKey {
async _isBetterThanKnown(session, olm, pickleKey, txn) { async _isBetterThanKnown(session, olm, pickleKey, txn) {
let isBetter = true; let isBetter = true;
// TODO: we could potentially have a small speedup here if we looked first in the SessionCache here...
const existingSessionEntry = await txn.inboundGroupSessions.get(this.roomId, this.senderKey, this.sessionId); const existingSessionEntry = await txn.inboundGroupSessions.get(this.roomId, this.senderKey, this.sessionId);
if (existingSessionEntry?.session) { if (existingSessionEntry?.session) {
const existingSession = new olm.InboundGroupSession(); const existingSession = new olm.InboundGroupSession();