mirror of
https://github.com/element-hq/element-web.git
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184 lines
7 KiB
JavaScript
184 lines
7 KiB
JavaScript
/*
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Copyright 2017 Vector Creations 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 FileSaver from 'file-saver';
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import React, {createRef} from 'react';
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import PropTypes from 'prop-types';
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import { _t } from '../../../languageHandler';
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import { MatrixClient } from 'matrix-js-sdk';
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import * as MegolmExportEncryption from '../../../utils/MegolmExportEncryption';
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import * as sdk from '../../../index';
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const PHASE_EDIT = 1;
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const PHASE_EXPORTING = 2;
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export default class ExportE2eKeysDialog extends React.Component {
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static propTypes = {
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matrixClient: PropTypes.instanceOf(MatrixClient).isRequired,
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onFinished: PropTypes.func.isRequired,
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};
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constructor(props) {
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super(props);
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this._unmounted = false;
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this._passphrase1 = createRef();
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this._passphrase2 = createRef();
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this.state = {
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phase: PHASE_EDIT,
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errStr: null,
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};
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}
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componentWillUnmount() {
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this._unmounted = true;
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}
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_onPassphraseFormSubmit = (ev) => {
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ev.preventDefault();
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const passphrase = this._passphrase1.current.value;
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if (passphrase !== this._passphrase2.current.value) {
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this.setState({errStr: _t('Passphrases must match')});
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return false;
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}
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if (!passphrase) {
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this.setState({errStr: _t('Passphrase must not be empty')});
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return false;
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}
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this._startExport(passphrase);
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return false;
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};
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_startExport(passphrase) {
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// extra Promise.resolve() to turn synchronous exceptions into
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// asynchronous ones.
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Promise.resolve().then(() => {
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return this.props.matrixClient.exportRoomKeys();
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}).then((k) => {
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return MegolmExportEncryption.encryptMegolmKeyFile(
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JSON.stringify(k), passphrase,
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);
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}).then((f) => {
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const blob = new Blob([f], {
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type: 'text/plain;charset=us-ascii',
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});
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FileSaver.saveAs(blob, 'element-keys.txt');
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this.props.onFinished(true);
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}).catch((e) => {
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console.error("Error exporting e2e keys:", e);
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if (this._unmounted) {
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return;
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}
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const msg = e.friendlyText || _t('Unknown error');
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this.setState({
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errStr: msg,
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phase: PHASE_EDIT,
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});
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});
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this.setState({
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errStr: null,
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phase: PHASE_EXPORTING,
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});
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}
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_onCancelClick = (ev) => {
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ev.preventDefault();
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this.props.onFinished(false);
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return false;
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};
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render() {
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const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
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const disableForm = (this.state.phase === PHASE_EXPORTING);
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return (
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<BaseDialog className='mx_exportE2eKeysDialog'
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onFinished={this.props.onFinished}
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title={_t("Export room keys")}
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>
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<form onSubmit={this._onPassphraseFormSubmit}>
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<div className="mx_Dialog_content">
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<p>
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{ _t(
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'This process allows you to export the keys for messages ' +
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'you have received in encrypted rooms to a local file. You ' +
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'will then be able to import the file into another Matrix ' +
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'client in the future, so that client will also be able to ' +
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'decrypt these messages.',
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) }
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</p>
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<p>
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{ _t(
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'The exported file will allow anyone who can read it to decrypt ' +
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'any encrypted messages that you can see, so you should be ' +
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'careful to keep it secure. To help with this, you should enter ' +
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'a passphrase below, which will be used to encrypt the exported ' +
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'data. It will only be possible to import the data by using the ' +
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'same passphrase.',
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) }
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</p>
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<div className='error'>
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{ this.state.errStr }
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</div>
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<div className='mx_E2eKeysDialog_inputTable'>
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<div className='mx_E2eKeysDialog_inputRow'>
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<div className='mx_E2eKeysDialog_inputLabel'>
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<label htmlFor='passphrase1'>
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{ _t("Enter passphrase") }
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</label>
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</div>
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<div className='mx_E2eKeysDialog_inputCell'>
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<input ref={this._passphrase1} id='passphrase1'
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autoFocus={true} size='64' type='password'
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disabled={disableForm}
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/>
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</div>
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</div>
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<div className='mx_E2eKeysDialog_inputRow'>
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<div className='mx_E2eKeysDialog_inputLabel'>
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<label htmlFor='passphrase2'>
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{ _t("Confirm passphrase") }
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</label>
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</div>
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<div className='mx_E2eKeysDialog_inputCell'>
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<input ref={this._passphrase2} id='passphrase2'
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size='64' type='password'
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disabled={disableForm}
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/>
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</div>
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</div>
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</div>
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</div>
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<div className='mx_Dialog_buttons'>
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<input className='mx_Dialog_primary' type='submit' value={_t('Export')}
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disabled={disableForm}
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/>
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<button onClick={this._onCancelClick} disabled={disableForm}>
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{ _t("Cancel") }
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</button>
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</div>
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</form>
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</BaseDialog>
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);
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}
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}
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