initial pseudocode WIP for e2e online backups
Matthew Hodgson
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/*
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Copyright 2018 New Vector Ltd
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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 sdk from './index';
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import Modal from './Modal';
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export default class SuggestKeyRestoreHandler {
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constructor(matrixClient) {
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this._matrixClient = matrixClient;
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}
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handleSuggestKeyRestore() {
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const onVerifyDevice = () => {
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const DeviceVerifyDialog = sdk.getComponent('views.dialogs.DeviceVerifyDialog');
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Modal.createTrackedDialog('Key Restore', 'Starting verification', DeviceVerifyDialog, {
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// userId: this.props.userId,
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// device: this.state.deviceInfo,
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onFinished: (verified) => {
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if (verified) {
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this.props.onFinished();
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}
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},
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});
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};
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const onRecoverFromBackup = () => {
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// XXX: we need this so that you can get at it from UserSettings too
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// * prompt for recovery key
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// * Download the current backup version info from the server and check the key decrypts it okay.
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// * Check that the public key for that backup version matches the recovery key
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// * show a spinner
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// * Download all the existing keys from the server
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// * Decrypt them using the recovery key
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// * Add them to the local store (which encrypts them as normal with "DEFAULT KEY"
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// * Enable incremental backups for this device.
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};
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const onIgnoreSuggestion = () => {
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};
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const onFinished = () => {
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this.suggestBackup();
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};
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// FIXME: need a way to know if an account has ever touched E2E before.
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// Perhaps we can extend toDevice to include a flag if it's the first time the
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// server has ever sent a room_key to a client or something?
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const virginAccount = false;
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if (virginAccount) {
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this.suggestBackup();
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return;
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}
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const SuggestKeyRestoreDialog = sdk.getComponent("dialogs.SuggestKeyRestoreDialog");
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Modal.createTrackedDialog('Key Restore', 'Key Restore', SuggestKeyRestoreDialog, {
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matrixClient: this._matrixClient,
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isOnlyDevice: false, // FIXME
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hasOnlineBackup: false, // FIXME
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onVerifyDevice: onVerifyDevice,
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onRecoverFromBackup: onRecoverFromBackup,
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onIgnoreSuggestion: onIgnoreSuggestion,
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onFinished: onFinished,
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});
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}
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suggestBackup() {
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if (hasOnlineBackup) return;
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const onStartNewBackup = () => {
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// XXX: we need this so that you can get at it from UserSettings too
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// * Upload all their existing keys from their session store to the backup using the bulk upload API.
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// (Having re-encrypted them using the backup keypair rather than the static one used to store them on disk)
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};
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const SuggestKeyBackupDialog = sdk.getComponent("dialogs.SuggestKeyBackupDialog");
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Modal.createTrackedDialog('Key Backup', 'Key Backup', SuggestKeyBackupDialog, {
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onStartNewBackup: onStartNewBackup,
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});
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}
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}
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@ -1129,6 +1129,12 @@ export default React.createClass({
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cli.on("crypto.roomKeyRequestCancellation", (req) => {
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krh.handleKeyRequestCancellation(req);
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});
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const skrh = new SuggestKeyRestoreHandler(cli);
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cli.on("crypto.suggestKeyRestore", () => {
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skrh.handleSuggestKeyRestore();
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});
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cli.on("Room", (room) => {
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if (MatrixClientPeg.get().isCryptoEnabled()) {
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const blacklistEnabled = SettingsStore.getValueAt(
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@ -0,0 +1,68 @@
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/*
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Copyright 2018 New Vector Ltd
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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 Modal from '../../../Modal';
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import React from 'react';
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import PropTypes from 'prop-types';
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import sdk from '../../../index';
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import { _t, _td } from '../../../languageHandler';
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/**
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* Dialog which asks the user whether they want to restore megolm keys
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* from various sources when they first start using E2E on a new device.
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*/
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export default React.createClass({
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propTypes: {
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onStartNewBackup: PropTypes.func.isRequired,
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},
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render: function() {
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const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
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return (
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<BaseDialog className='mx_SuggestKeyRestoreDialog'
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onFinished={this.props.onFinished}
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title={_t('Backup encryption keys on your server?')}
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>
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<div>
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<p>To avoid ever losing your encrypted message history, you
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can save your encryption keys on the server, protected by a recovery key.
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</p>
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<p>To maximise security, your recovery key is never stored by the app,
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so you must store it yourself somewhere safe.</p>
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<p>
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<p>Warning: storing your encryption keys on the server means that
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if someone gains access to your account and also steals your recovery key,
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they will be able to read all of your encrypted conversation history.
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</p>
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<p>Do you wish to generate a recovery key and backup your encryption
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keys on the server?
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<div className="mx_Dialog_buttons">
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<button onClick={this.props.onStartNewBackup}>
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{ _t("Generate recovery key and enable online backups") }
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</button>
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<button onClick={this.props.onFinished}>
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{ _t("I'll stick to manual backups") }
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</button>
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</div>
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</div>
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</BaseDialog>
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);
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},
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});
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@ -0,0 +1,77 @@
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/*
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Copyright 2018 New Vector Ltd
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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 Modal from '../../../Modal';
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import React from 'react';
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import PropTypes from 'prop-types';
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import sdk from '../../../index';
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import { _t, _td } from '../../../languageHandler';
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/**
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* Dialog which asks the user whether they want to restore megolm keys
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* from various sources when they first start using E2E on a new device.
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*/
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export default React.createClass({
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propTypes: {
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matrixClient: PropTypes.object.isRequired,
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isOnlyDevice: PropTypes.bool.isRequired,
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hasOnlineBackup: PropTypes.bool.isRequired,
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onVerifyDevice: PropTypes.func.isRequired,
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onImportBackup: PropTypes.func.isRequired,
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onRecoverFromBackup: PropTypes.func.isRequired,
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onIgnoreSuggestion: PropTypes.func.isRequired,
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},
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render: function() {
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const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
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return (
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<BaseDialog className='mx_SuggestKeyRestoreDialog'
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onFinished={this.props.onFinished}
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title={_t('Restore encryption keys')}
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>
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<div>
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<p>We don't have a way to decrypt older messages on this device.</p>
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<p>Your options are:</p>
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<li>
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{ !this.props.isOnlyDevice ? <ul>Verify this device from one or more of your other ones to automatically sync keys</ul>: '' }
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{ this.props.hasOnlineBackup ? <ul>Enter your recovery key to restore encryption keys from your online backup</ul> : '' }
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<ul>Import encryption keys from an offline backup</ul>
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<ul>Continue without restoring keys, syncing keys from your other devices on a best effort basis</ul>
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</li>
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<div className="mx_Dialog_buttons">
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<button onClick={this.props.onVerifyDevice}>
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{ _t('Verify this device') }
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</button>
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<button onClick={this.props.onRecoverFromBackup}>
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{ _t('Restore from online backup') }
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</button>
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<button onClick={this.props.onImportBackup}>
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{ _t('Restore from offline backup') }
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</button>
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<button onClick={this.props.onIgnoreClicked}>
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{ _t('Ignore request') }
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</button>
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</div>
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</div>
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</BaseDialog>
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);
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},
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});
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