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Merge pull request #163 from vector-im/jryans/context-isolation

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Enable context isolation, bridge expected IPC
This commit is contained in:
J. Ryan Stinnett 2021-01-13 16:50:26 +00:00 committed by GitHub
commit faa217c767
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2 changed files with 43 additions and 11 deletions
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9
src/electron-main.js
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@ -1,9 +1,8 @@
/*
Copyright 2016 Aviral Dasgupta
Copyright 2016 OpenMarket Ltd
Copyright 2018, 2019 New Vector Ltd
Copyright 2017, 2019 Michael Telatynski <7t3chguy@gmail.com>
Copyright 2020 The Matrix.org Foundation C.I.C.
Copyright 2018 - 2021 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.
@ -922,11 +921,7 @@ app.on('ready', async () => {
nodeIntegration: false,
//sandbox: true, // We enable sandboxing from app.enableSandbox() above
enableRemoteModule: false,
// We don't use this: it's useful for the preload script to
// share a context with the main page so we can give select
// objects to the main page. The sandbox option isolates the
// main page from the background script.
contextIsolation: false,
contextIsolation: true,
webgl: false,
spellcheck: true,
},

45
src/preload.js
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@ -1,5 +1,5 @@
/*
Copyright 2018, 2019 New Vector Ltd
Copyright 2018, 2019, 2021 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.
@ -14,7 +14,44 @@ See the License for the specific language governing permissions and
limitations under the License.
*/
const { ipcRenderer } = require('electron');
const { contextBridge, ipcRenderer } = require("electron");
// expose ipcRenderer to the renderer process
window.ipcRenderer = ipcRenderer;
// Expose only expected IPC wrapper APIs to the renderer process to avoid
// handing out generalised messaging access.
const CHANNELS = [
"app_onAction",
"before-quit",
"check_updates",
"install_update",
"ipcCall",
"ipcReply",
"loudNotification",
"preferences",
"seshat",
"seshatReply",
"setBadgeCount",
"update-downloaded",
"userDownloadCompleted",
"userDownloadOpen",
];
contextBridge.exposeInMainWorld(
"electron",
{
on(channel, listener) {
if (!CHANNELS.includes(channel)) {
console.error(`Unknown IPC channel ${channel} ignored`);
return;
}
ipcRenderer.on(channel, listener);
},
send(channel, ...args) {
if (!CHANNELS.includes(channel)) {
console.error(`Unknown IPC channel ${channel} ignored`);
return;
}
ipcRenderer.send(channel, ...args);
},
},
);