148 lines
4.2 KiB
JavaScript
148 lines
4.2 KiB
JavaScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {ViewModel} from "../../ViewModel.js";
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import {KeyType} from "../../../matrix/ssss/index.js";
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import {createEnum} from "../../../utils/enum";
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export const Status = createEnum("Enabled", "SetupKey", "SetupPhrase", "Pending");
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export class SessionBackupViewModel extends ViewModel {
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constructor(options) {
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super(options);
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this._session = options.session;
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this._error = null;
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this._isBusy = false;
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this._dehydratedDeviceId = undefined;
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this._status = undefined;
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this._reevaluateStatus();
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this.track(this._session.hasSecretStorageKey.subscribe(() => {
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if (this._reevaluateStatus()) {
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this.emitChange("status");
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}
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}));
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}
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_reevaluateStatus() {
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if (this._isBusy) {
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return false;
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}
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let status;
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const hasSecretStorageKey = this._session.hasSecretStorageKey.get();
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if (hasSecretStorageKey === true) {
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status = this._session.sessionBackup ? Status.Enabled : Status.SetupKey;
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} else if (hasSecretStorageKey === false) {
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status = Status.SetupKey;
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} else {
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status = Status.Pending;
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}
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const changed = status !== this._status;
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this._status = status;
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return changed;
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}
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get decryptAction() {
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return this.i18n`Set up`;
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}
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get purpose() {
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return this.i18n`set up session backup`;
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}
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offerDehydratedDeviceSetup() {
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return true;
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}
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get dehydratedDeviceId() {
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return this._dehydratedDeviceId;
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}
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get isBusy() {
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return this._isBusy;
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}
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get backupVersion() {
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return this._session.sessionBackup?.version;
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}
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get status() {
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return this._status;
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}
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get error() {
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return this._error?.message;
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}
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showPhraseSetup() {
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if (this._status === Status.SetupKey) {
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this._status = Status.SetupPhrase;
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this.emitChange("status");
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}
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}
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showKeySetup() {
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if (this._status === Status.SetupPhrase) {
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this._status = Status.SetupKey;
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this.emitChange("status");
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}
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}
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async _enterCredentials(keyType, credential, setupDehydratedDevice) {
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if (credential) {
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try {
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this._isBusy = true;
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this.emitChange("isBusy");
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const key = await this._session.enableSecretStorage(keyType, credential);
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if (setupDehydratedDevice) {
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this._dehydratedDeviceId = await this._session.setupDehydratedDevice(key);
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}
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} catch (err) {
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console.error(err);
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this._error = err;
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this.emitChange("error");
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} finally {
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this._isBusy = false;
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this._reevaluateStatus();
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this.emitChange("");
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}
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}
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}
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enterSecurityPhrase(passphrase, setupDehydratedDevice) {
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this._enterCredentials(KeyType.Passphrase, passphrase, setupDehydratedDevice);
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}
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enterSecurityKey(securityKey, setupDehydratedDevice) {
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this._enterCredentials(KeyType.RecoveryKey, securityKey, setupDehydratedDevice);
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}
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async disable() {
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try {
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this._isBusy = true;
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this.emitChange("isBusy");
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await this._session.disableSecretStorage();
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} catch (err) {
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console.error(err);
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this._error = err;
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this.emitChange("error");
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} finally {
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this._isBusy = false;
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this._reevaluateStatus();
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this.emitChange("");
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}
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}
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}
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