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fetch single device key in DeviceTracker

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This commit is contained in:
Bruno Windels 2022-06-01 15:27:00 +02:00
parent 9384fdc885
commit 6f0ebeacb7
1 changed files with 52 additions and 0 deletions
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52
src/matrix/e2ee/DeviceTracker.js
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@ -309,6 +309,7 @@ export class DeviceTracker {
return await this._devicesForUserIds(roomId, userIds, txn, hsApi, log);
}
/** gets devices for the given user ids that are in the given room */
async devicesForRoomMembers(roomId, userIds, hsApi, log) {
const txn = await this._storage.readTxn([
this._storage.storeNames.userIdentities,
@ -316,6 +317,57 @@ export class DeviceTracker {
return await this._devicesForUserIds(roomId, userIds, txn, hsApi, log);
}
/** gets a single device */
async deviceForId(userId, deviceId, hsApi, log) {
const txn = await this._storage.readTxn([
this._storage.storeNames.deviceIdentities,
]);
let device = await txn.deviceIdentities.get(userId, deviceId);
if (device) {
log.set("existingDevice", true);
} else {
//// BEGIN EXTRACT (deviceKeysMap)
const deviceKeyResponse = await hsApi.queryKeys({
"timeout": 10000,
"device_keys": {
[userId]: [deviceId]
},
"token": this._getSyncToken()
}, {log}).response();
// verify signature
const verifiedKeysPerUser = log.wrap("verify", log => this._filterVerifiedDeviceKeys(deviceKeyResponse["device_keys"], log));
//// END EXTRACT
// there should only be one device in here, but still check the HS sends us the right one
const verifiedKeys = verifiedKeysPerUser
.find(vkpu => vkpu.userId === userId).verifiedKeys
.find(vk => vk["device_id"] === deviceId);
device = deviceKeysAsDeviceIdentity(verifiedKeys);
const txn = await this._storage.readWriteTxn([
this._storage.storeNames.deviceIdentities,
]);
// check again we don't have the device already.
// when updating all keys for a user we allow updating the
// device when the key hasn't changed so the device display name
// can be updated, but here we don't.
const existingDevice = await txn.deviceIdentities.get(userId, deviceId);
if (existingDevice) {
device = existingDevice;
log.set("existingDeviceAfterFetch", true);
} else {
try {
txn.deviceIdentities.set(device);
log.set("newDevice", true);
} catch (err) {
txn.abort();
throw err;
}
await txn.complete();
}
}
return device;
}
/**
* @param {string} roomId [description]
* @param {Array<string>} userIds a set of user ids to try and find the identity for. Will be check to belong to roomId.