fix(screenshare): reset permissions for screen capturer on osx >= 10.15

Co-authored-by: Tudor-Ovidiu Avram <tudor.potecaru@8x8.com>

Author: Potecaru Tudor

README.md

@@ -56,7 +56,8 @@ const {
 // jitsiMeetWindow - The BrowserWindow instance of the window where Jitsi Meet is loaded.
 // appName - Application name which will be displayed inside the content sharing tracking window
 // i.e. [appName] is sharing your screen.
-setupScreenSharingMain(mainWindow, appName);
+// osxBundleId - Mac Application bundleId for which screen capturer permissions will be reset if user denied them.  
+setupScreenSharingMain(mainWindow, appName, osxBundleId);
 ```
 
 

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "jitsi-meet-electron-utils",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "description": "Utilities for jitsi-meet-electron project",
   "main": "index.js",
   "scripts": {
@@ -26,6 +26,7 @@
   "license": "Apache-2.0",
   "gypfile": true,
   "dependencies": {
+    "mac-screen-capture-permissions": "^1.1.0",
     "nan": "^2.14.0",
     "postis": "^2.2.0",
     "prebuild-install": "^5.3.0",

package.json

@@ -2,6 +2,7 @@
 const electron = require('electron');
 
 const { SCREEN_SHARE_EVENTS_CHANNEL, SCREEN_SHARE_EVENTS, TRACKER_SIZE } = require('./constants');
+const { isMac } = require('./utils');
 
 /**
  * Main process component that sets up electron specific screen sharing functionality, like screen sharing
@@ -17,11 +18,15 @@ class ScreenShareMainHook {
      * @param {string} identity - Name of the application doing screen sharing, will be displayed in the
      * screen sharing tracker window text i.e. {identity} is sharing your screen.
      */
-    constructor(jitsiMeetWindow, identity) {
+    constructor(jitsiMeetWindow, identity, osxBundleId) {
         this._jitsiMeetWindow = jitsiMeetWindow;
         this._identity = identity;
         this._onScreenSharingEvent = this._onScreenSharingEvent.bind(this);
 
+        if (osxBundleId && isMac()) {
+            this._verifyScreenCapturePermissions(osxBundleId);
+        }
+
         // Listen for events coming in from the main render window and the screen share tracker window.
         electron.ipcMain.on(SCREEN_SHARE_EVENTS_CHANNEL, this._onScreenSharingEvent);
 
@@ -72,8 +77,8 @@ class ScreenShareMainHook {
         this._screenShareTracker = new electron.BrowserWindow({
             height: TRACKER_SIZE.height,
             width: TRACKER_SIZE.width,
-            x:(display.workArea.width - TRACKER_SIZE.width) / 2,
-            y:display.workArea.height - TRACKER_SIZE.height - 5,
+            x: (display.workArea.width - TRACKER_SIZE.width) / 2,
+            y: display.workArea.height - TRACKER_SIZE.height - 5,
             transparent: true,
             minimizable: true,
             maximizable: false,
@@ -99,6 +104,27 @@ class ScreenShareMainHook {
         this._screenShareTracker
             .loadURL(`file://${__dirname}/screenSharingTracker.html?sharingIdentity=${this._identity}`);
     }
+
+    /**
+     * Verifies whether app has already asked for capture permissions.
+     * If it did but the user denied, resets permissions for the app
+     *
+     * @param {string} bundleId- OSX Application BundleId
+     */
+    _verifyScreenCapturePermissions(bundleId) {
+        const {
+            hasPromptedForPermission,
+            hasScreenCapturePermission,
+            resetPermissions,
+        } = require('mac-screen-capture-permissions');
+
+        const hasPermission = hasScreenCapturePermission();
+        const promptedAlready = hasPromptedForPermission();
+
+        if (promptedAlready && !hasPermission) {
+            resetPermissions({ bundleId });
+        }
+    }
 }
 
 /**
@@ -107,7 +133,8 @@ class ScreenShareMainHook {
  * @param {BrowserWindow} jitsiMeetWindow - the BrowserWindow object which displays Jitsi Meet
  * @param {string} identity - Name of the application doing screen sharing, will be displayed in the
  * screen sharing tracker window text i.e. {identity} is sharing your screen.
+ * @param {string} bundleId- OSX Application BundleId
  */
-module.exports = function setupScreenSharingMain(jitsiMeetWindow, identity) {
-    return new ScreenShareMainHook(jitsiMeetWindow, identity);
+module.exports = function setupScreenSharingMain(jitsiMeetWindow, identity, osxBundleId) {
+    return new ScreenShareMainHook(jitsiMeetWindow, identity, osxBundleId);
 };

screensharing/main.js

@@ -0,0 +1,7 @@
+/* global process */
+
+const isMac = () => process.platform === 'darwin';
+
+module.exports = {
+  isMac,
+};