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add logging to key sharing and discarding in reaction to member changes

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This commit is contained in:
Bruno Windels 2021-03-03 11:51:50 +01:00
parent f3c49e51f2
commit 30481a5a9e
2 changed files with 13 additions and 4 deletions
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15
src/matrix/e2ee/RoomEncryption.js
View file

@ -79,14 +79,18 @@ export class RoomEncryption {
this._senderDeviceCache = new Map(); // purge the sender device cache
}
async writeMemberChanges(memberChanges, txn) {
async writeMemberChanges(memberChanges, txn, log) {
let shouldFlush;
const memberChangesArray = Array.from(memberChanges.values());
if (memberChangesArray.some(m => m.hasLeft)) {
log.log({
l: "discardOutboundSession",
leftUsers: memberChangesArray.filter(m => m.hasLeft).map(m => m.userId),
});
this._megolmEncryption.discardOutboundSession(this._room.id, txn);
}
if (memberChangesArray.some(m => m.hasJoined)) {
shouldFlush = await this._addShareRoomKeyOperationForNewMembers(memberChangesArray, txn);
shouldFlush = await this._addShareRoomKeyOperationForNewMembers(memberChangesArray, txn, log);
}
await this._deviceTracker.writeMemberChanges(this._room, memberChanges, txn);
return shouldFlush;
@ -310,11 +314,16 @@ export class RoomEncryption {
await removeOpTxn.complete();
}
async _addShareRoomKeyOperationForNewMembers(memberChangesArray, txn) {
async _addShareRoomKeyOperationForNewMembers(memberChangesArray, txn, log) {
const userIds = memberChangesArray.filter(m => m.hasJoined).map(m => m.userId);
const roomKeyMessage = await this._megolmEncryption.createRoomKeyMessage(
this._room.id, txn);
if (roomKeyMessage) {
log.log({
l: "share key for new members", userIds,
id: roomKeyMessage.session_id,
chain_index: roomKeyMessage.chain_index
});
this._writeRoomKeyShareOperation(roomKeyMessage, userIds, txn);
return true;
}

2
src/matrix/room/Room.js
View file

@ -256,7 +256,7 @@ export class Room extends EventEmitter {
let shouldFlushKeyShares = false;
// pass member changes to device tracker
if (roomEncryption && this.isTrackingMembers && memberChanges?.size) {
shouldFlushKeyShares = await roomEncryption.writeMemberChanges(memberChanges, txn);
shouldFlushKeyShares = await roomEncryption.writeMemberChanges(memberChanges, txn, log);
log.set("shouldFlushKeyShares", shouldFlushKeyShares);
}
// also apply (decrypted) timeline entries to the summary changes