initial pseudocode WIP for e2e online backups

2018-01-15 02:02:48 +00:00
parent 952f2c6a21
commit a233af67ea
4 changed files with 247 additions and 0 deletions
--- a/src/SuggestKeyRestoreHandler.js
+++ b/src/SuggestKeyRestoreHandler.js
@@ -0,0 +1,96 @@
+/*
+Copyright 2018 New Vector 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 sdk from './index';
+import Modal from './Modal';
+
+export default class SuggestKeyRestoreHandler {
+    constructor(matrixClient) {
+        this._matrixClient = matrixClient;
+    }
+
+    handleSuggestKeyRestore() {
+        const onVerifyDevice = () => {
+            const DeviceVerifyDialog = sdk.getComponent('views.dialogs.DeviceVerifyDialog');
+
+            Modal.createTrackedDialog('Key Restore', 'Starting verification', DeviceVerifyDialog, {
+                // userId: this.props.userId,
+                // device: this.state.deviceInfo,
+                onFinished: (verified) => {
+                    if (verified) {
+                        this.props.onFinished();
+                    }
+                },
+            });
+        };
+
+        const onRecoverFromBackup = () => {
+             // XXX: we need this so that you can get at it from UserSettings too
+             // * prompt for recovery key
+             // * Download the current backup version info from the server and check the key decrypts it okay.
+             // * Check that the public key for that backup version matches the recovery key
+             // * show a spinner
+             // * Download all the existing keys from the server
+             // * Decrypt them using the recovery key
+             // * Add them to the local store (which encrypts them as normal with "DEFAULT KEY"
+             // * Enable incremental backups for this device.
+        };
+
+        const onIgnoreSuggestion = () => {
+        };
+
+        const onFinished = () => {
+            this.suggestBackup();
+        };
+
+        // FIXME: need a way to know if an account has ever touched E2E before.
+        // Perhaps we can extend toDevice to include a flag if it's the first time the
+        // server has ever sent a room_key to a client or something?
+        const virginAccount = false;
+
+        if (virginAccount) {
+            this.suggestBackup();
+            return;
+        }
+
+        const SuggestKeyRestoreDialog = sdk.getComponent("dialogs.SuggestKeyRestoreDialog");
+        Modal.createTrackedDialog('Key Restore', 'Key Restore', SuggestKeyRestoreDialog, {
+            matrixClient: this._matrixClient,
+            isOnlyDevice: false, // FIXME
+            hasOnlineBackup: false, // FIXME
+            onVerifyDevice: onVerifyDevice,
+            onRecoverFromBackup: onRecoverFromBackup,
+            onIgnoreSuggestion: onIgnoreSuggestion,
+            onFinished: onFinished,
+        });
+    }
+
+    suggestBackup() {
+        if (hasOnlineBackup) return;
+
+        const onStartNewBackup = () => {
+          // XXX: we need this so that you can get at it from UserSettings too
+          // * Upload all their existing keys from their session store to the backup using the bulk upload API.
+          //   (Having re-encrypted them using the backup keypair rather than the static one used to store them on disk)
+        };
+
+        const SuggestKeyBackupDialog = sdk.getComponent("dialogs.SuggestKeyBackupDialog");
+        Modal.createTrackedDialog('Key Backup', 'Key Backup', SuggestKeyBackupDialog, {
+            onStartNewBackup: onStartNewBackup,
+        });        
+    }    
+}
+