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fix lint error, and incorporate suggestions from richvdh and krombel

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Signed-off-by: Hubert Chathi <hubert@uhoreg.ca>
This commit is contained in:
Hubert Chathi
2017-10-12 09:04:12 -04:00
parent 8f252992e4
commit dcab4eb70b
1 changed files with 9 additions and 10 deletions
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19
src/crypto/OlmDevice.js
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@@ -107,7 +107,7 @@ function OlmDevice(sessionStore) {
// event and we don't consider it a replay attack. // event and we don't consider it a replay attack.
// //
// Keys are strings of form "<senderKey>|<session_id>|<message_index>" // Keys are strings of form "<senderKey>|<session_id>|<message_index>"
// Values are objects containing the event ID and timestamp. // Values are objects of the form "{id: <event id>, timestamp: <ts>}"
this._inboundGroupSessionMessageIndexes = {}; this._inboundGroupSessionMessageIndexes = {};
} }
@@ -813,7 +813,6 @@ OlmDevice.prototype.decryptGroupMessage = async function(
roomId, senderKey, sessionId, body, eventId, timestamp, roomId, senderKey, sessionId, body, eventId, timestamp,
) { ) {
const self = this; const self = this;
const argumentsLength = arguments.length;
function decrypt(session, sessionData) { function decrypt(session, sessionData) {
const res = session.decrypt(body); const res = session.decrypt(body);
@@ -828,14 +827,14 @@ OlmDevice.prototype.decryptGroupMessage = async function(
// and timestamp from the last time we used this message index, then we // and timestamp from the last time we used this message index, then we
// don't consider it a replay attack. // don't consider it a replay attack.
const messageIndexKey = senderKey + "|" + sessionId + "|" + res.message_index; const messageIndexKey = senderKey + "|" + sessionId + "|" + res.message_index;
if (messageIndexKey in self._inboundGroupSessionMessageIndexes if (messageIndexKey in self._inboundGroupSessionMessageIndexes) {
&& (argumentsLength <= 4 // Compatibility for older old versions. const msgInfo = self._inboundGroupSessionMessageIndexes[messageIndexKey];
|| self._inboundGroupSessionMessageIndexes[messageIndexKey].id !== eventId if (msgInfo.id !== eventId || msgInfo.timestamp !== timestamp) {
|| self._inboundGroupSessionMessageIndexes[messageIndexKey].timestamp !== timestamp)) { throw new Error(
throw new Error( "Duplicate message index, possible replay attack: " +
"Duplicate message index, possible replay attack: " + messageIndexKey,
messageIndexKey, );
); }
} }
self._inboundGroupSessionMessageIndexes[messageIndexKey] = { self._inboundGroupSessionMessageIndexes[messageIndexKey] = {
id: eventId, id: eventId,