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Merge pull request #647 from matrix-org/rav/megolm_backup_ui
Import and export for Megolm session data
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170
src/async-components/views/dialogs/ImportE2eKeysDialog.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,170 @@ | ||
| /* | ||
| Copyright 2017 Vector Creations Ltd | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| import React from 'react'; | ||
|
|
||
| import * as Matrix from 'matrix-js-sdk'; | ||
| import * as MegolmExportEncryption from '../../../utils/MegolmExportEncryption'; | ||
| import sdk from '../../../index'; | ||
|
|
||
| function readFileAsArrayBuffer(file) { | ||
| return new Promise((resolve, reject) => { | ||
| const reader = new FileReader(); | ||
| reader.onload = (e) => { | ||
| resolve(e.target.result); | ||
| }; | ||
| reader.onerror = reject; | ||
|
|
||
| reader.readAsArrayBuffer(file); | ||
| }); | ||
| } | ||
|
|
||
| const PHASE_EDIT = 1; | ||
| const PHASE_IMPORTING = 2; | ||
|
|
||
| export default React.createClass({ | ||
| displayName: 'ImportE2eKeysDialog', | ||
|
|
||
| propTypes: { | ||
| matrixClient: React.PropTypes.instanceOf(Matrix.MatrixClient).isRequired, | ||
| onFinished: React.PropTypes.func.isRequired, | ||
| }, | ||
|
|
||
| getInitialState: function() { | ||
| return { | ||
| enableSubmit: false, | ||
| phase: PHASE_EDIT, | ||
| errStr: null, | ||
| }; | ||
| }, | ||
|
|
||
| componentWillMount: function() { | ||
| this._unmounted = false; | ||
| }, | ||
|
|
||
| componentWillUnmount: function() { | ||
| this._unmounted = true; | ||
| }, | ||
|
|
||
| _onFormChange: function(ev) { | ||
| const files = this.refs.file.files || []; | ||
| this.setState({ | ||
| enableSubmit: (this.refs.passphrase.value !== "" && files.length > 0), | ||
| }); | ||
| }, | ||
|
|
||
| _onFormSubmit: function(ev) { | ||
| ev.preventDefault(); | ||
| this._startImport(this.refs.file.files[0], this.refs.passphrase.value); | ||
| return false; | ||
| }, | ||
|
|
||
| _startImport: function(file, passphrase) { | ||
| this.setState({ | ||
| errStr: null, | ||
| phase: PHASE_IMPORTING, | ||
| }); | ||
|
|
||
| return readFileAsArrayBuffer(file).then((arrayBuffer) => { | ||
| return MegolmExportEncryption.decryptMegolmKeyFile( | ||
| arrayBuffer, passphrase | ||
| ); | ||
| }).then((keys) => { | ||
| return this.props.matrixClient.importRoomKeys(JSON.parse(keys)); | ||
| }).then(() => { | ||
| // TODO: it would probably be nice to give some feedback about what we've imported here. | ||
| this.props.onFinished(true); | ||
| }).catch((e) => { | ||
| if (this._unmounted) { | ||
| return; | ||
| } | ||
| this.setState({ | ||
| errStr: e.message, | ||
| phase: PHASE_EDIT, | ||
| }); | ||
| }); | ||
| }, | ||
|
|
||
| render: function() { | ||
| const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog'); | ||
| const AccessibleButton = sdk.getComponent('views.elements.AccessibleButton'); | ||
|
|
||
| const disableForm = (this.state.phase !== PHASE_EDIT); | ||
|
|
||
| return ( | ||
| <BaseDialog className='mx_importE2eKeysDialog' | ||
| onFinished={this.props.onFinished} | ||
| title="Import room keys" | ||
| > | ||
| <form onSubmit={this._onFormSubmit}> | ||
| <div className="mx_Dialog_content"> | ||
| <p> | ||
| This process allows you to import encryption keys | ||
| that you had previously exported from another Matrix | ||
| client. You will then be able to decrypt any | ||
| messages that the other client could decrypt. | ||
| </p> | ||
| <p> | ||
| The export file will be protected with a passphrase. | ||
| You should enter the passphrase here, to decrypt the | ||
| file. | ||
| </p> | ||
| <div className='error'> | ||
| {this.state.errStr} | ||
| </div> | ||
| <div className='mx_E2eKeysDialog_inputTable'> | ||
| <div className='mx_E2eKeysDialog_inputRow'> | ||
| <div className='mx_E2eKeysDialog_inputLabel'> | ||
| <label htmlFor='importFile'> | ||
| File to import | ||
| </label> | ||
| </div> | ||
| <div className='mx_E2eKeysDialog_inputCell'> | ||
| <input ref='file' id='importFile' type='file' | ||
| autoFocus={true} | ||
| onChange={this._onFormChange} | ||
| disabled={disableForm} /> | ||
| </div> | ||
| </div> | ||
| <div className='mx_E2eKeysDialog_inputRow'> | ||
| <div className='mx_E2eKeysDialog_inputLabel'> | ||
| <label htmlFor='passphrase'> | ||
| Enter passphrase | ||
| </label> | ||
| </div> | ||
| <div className='mx_E2eKeysDialog_inputCell'> | ||
| <input ref='passphrase' id='passphrase' | ||
| size='64' type='password' | ||
| onChange={this._onFormChange} | ||
| disabled={disableForm}/> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| <div className='mx_Dialog_buttons'> | ||
| <input className='mx_Dialog_primary' type='submit' value='Import' | ||
| disabled={!this.state.enableSubmit || disableForm} | ||
| /> | ||
| <AccessibleButton element='button' onClick={this.props.onFinished} | ||
| disabled={disableForm}> | ||
| Cancel | ||
| </AccessibleButton> | ||
| </div> | ||
| </form> | ||
| </BaseDialog> | ||
| ); | ||
| }, | ||
| }); |
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