Megolm session import and export

package.json

@@ -67,6 +67,7 @@
     "react-dom": "^15.4.0",
     "react-gemini-scrollbar": "matrix-org/react-gemini-scrollbar#5e97aef",
     "sanitize-html": "^1.11.1",
+    "text-encoding-utf-8": "^1.0.1",
     "velocity-vector": "vector-im/velocity#059e3b2",
     "whatwg-fetch": "^1.0.0"
   },

src/async-components/views/dialogs/ExportE2eKeysDialog.js

@@ -0,0 +1,84 @@
+/*
+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 sdk from '../../../index';
+
+import * as MegolmExportEncryption from '../../../utils/MegolmExportEncryption';
+
+export default React.createClass({
+    displayName: 'ExportE2eKeysDialog',
+
+    getInitialState: function() {
+        return {
+            collectedPassword: false,
+        };
+    },
+
+    _onPassphraseFormSubmit: function(ev) {
+        ev.preventDefault();
+        console.log(this.refs.passphrase1.value);
+        return false;
+    },
+
+    render: function() {
+        let content;
+        if (!this.state.collectedPassword) {
+            content = (
+                <div className="mx_Dialog_content">
+                    <p>
+                        This process will allow you to export the keys for messages
+                        you have received in encrypted rooms to a local file. You
+                        will then be able to import the file into another Matrix
+                        client in the future, so that client will also be able to
+                        decrypt these messages.
+                    </p>
+                    <p>
+                        The exported file will allow anyone who can read it to decrypt
+                        any encrypted messages that you can see, so you should be
+                        careful to keep it secure. To help with this, you should enter
+                        a passphrase below, which will be used to encrypt the exported
+                        data. It will only be possible to import the data by using the
+                        same passphrase.
+                    </p>
+                    <form onSubmit={this._onPassphraseFormSubmit}>
+                        <div className="mx_TextInputDialog_label">
+                            <label htmlFor="passphrase1">Enter passphrase</label>
+                        </div>
+                        <div>
+                            <input ref="passphrase1" id="passphrase1"
+                                className="mx_TextInputDialog_input"
+                                autoFocus={true} size="64" type="password"/>
+                        </div>
+                        <div className="mx_Dialog_buttons">
+                            <input className="mx_Dialog_primary" type="submit" value="Export" />
+                        </div>
+                    </form>
+                </div>
+            );
+        }
+
+        return (
+            <div className="mx_exportE2eKeysDialog">
+                <div className="mx_Dialog_title">
+                    Export room keys
+                </div>
+                {content}
+            </div>
+        );
+    },
+});

src/index.js

@@ -28,3 +28,27 @@ module.exports.getComponent = function(componentName) {
     return Skinner.getComponent(componentName);
 };
 
+
+/* hacky functions for megolm import/export until we give it a UI */
+import * as MegolmExportEncryption from './utils/MegolmExportEncryption';
+import MatrixClientPeg from './MatrixClientPeg';
+
+window.exportKeys = function(password) {
+    return MatrixClientPeg.get().exportRoomKeys().then((k) => {
+        return MegolmExportEncryption.encryptMegolmKeyFile(
+            JSON.stringify(k), password
+        );
+    }).then((f) => {
+        console.log(new TextDecoder().decode(new Uint8Array(f)));
+    }).done();
+};
+
+window.importKeys = function(password, data) {
+    const arrayBuffer = new TextEncoder().encode(data).buffer;
+    return MegolmExportEncryption.decryptMegolmKeyFile(
+        arrayBuffer, password
+    ).then((j) => {
+        const k = JSON.parse(j);
+        return MatrixClientPeg.get().importRoomKeys(k);
+    });
+};