From 3a9b1fe1644ee04b27f00cb425bc0f67450cc349 Mon Sep 17 00:00:00 2001
From: SpacingBat3 <git@spacingbat3.anonaddy.com>
Date: Sun, 30 Jan 2022 19:44:18 +0100
Subject: [PATCH] Support older Electron versions.

Fix WebCord to work under Electron versions not supporting WebHID API.
---
 sources/code/global/global.ts     | 9 +++++++++
 sources/code/global/main.ts       | 7 +++++--
 sources/code/main/windows/main.ts | 1 -
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/sources/code/global/global.ts b/sources/code/global/global.ts
index 09944be1..b2599fdd 100644
--- a/sources/code/global/global.ts
+++ b/sources/code/global/global.ts
@@ -216,4 +216,13 @@ export function getAppIcon(sizes:number[]) {
 		if(existsSync("/usr/share/icons/hicolor/"+size.toString()+"x"+size.toString()+"/apps/webcord.png"))
 			return "/usr/share/icons/hicolor/"+size.toString()+"x"+size.toString()+"/apps/webcord.png";
 	return "";
+}
+
+export type SessionLatest = Electron.Session & {
+	/**
+	 * A method that is unsupported within your Electron version, but valid
+	 * for Electron releases supporting WebHID API, which are versions from
+	 * range `>=14.1.0 && <15.0.0 || >=15.1.0`.
+	 */
+	setDevicePermissionHandler: (handler: (()=>boolean)|null)=>void;
 }
\ No newline at end of file
diff --git a/sources/code/global/main.ts b/sources/code/global/main.ts
index d5bd0a99..31875f4e 100644
--- a/sources/code/global/main.ts
+++ b/sources/code/global/main.ts
@@ -63,13 +63,14 @@ console.debug = function (message?:unknown, ...optionalParams:unknown[]) {
 }
 import { app, BrowserWindow, dialog, shell } from 'electron';
 import { promises as fs } from 'fs';
-import { knownIstancesList, trustedProtocolRegExp } from './global';
+import { knownIstancesList, trustedProtocolRegExp, SessionLatest } from './global';
 import { checkVersion } from '../main/modules/update';
 import l10n from './modules/l10n';
 import createMainWindow from "../main/windows/main";
 import { AppConfig } from '../main/modules/config';
 import colors from '@spacingbat3/kolor';
 import { resolve as resolvePath, relative } from 'path';
+import { major } from "semver";
 
 // Handle command line switches:
 
@@ -180,7 +181,9 @@ app.on('web-contents-created', (_event, webContents) => {
     // Block all permission requests/checks by the default.
     webContents.session.setPermissionCheckHandler(() => false);
     webContents.session.setPermissionRequestHandler((_webContents,_permission,callback) => callback(false));
-    webContents.session.setDevicePermissionHandler(() => false);
+    // Block HID request only when Electron supports handling them.
+    if(major(process.versions.electron) >= 16 || /^(?:14|15)\.1\.\d+.*$/.test(process.versions.electron))
+        (webContents.session as SessionLatest).setDevicePermissionHandler(() => false);
     // Block navigation to the different origin.
     webContents.on('will-navigate', (event, url) => {
         const originUrl = webContents.getURL();
diff --git a/sources/code/main/windows/main.ts b/sources/code/main/windows/main.ts
index 6d4bfcd2..645f0432 100644
--- a/sources/code/main/windows/main.ts
+++ b/sources/code/main/windows/main.ts
@@ -168,7 +168,6 @@ export default function createMainWindow(startHidden: boolean, l10nStrings: l10n
             }
             return callback(returnValue);
         });
-        win.webContents.session.setDevicePermissionHandler(() => false);
     }
     win.loadFile(resolve(app.getAppPath(), 'sources/assets/web/html/load.html'))
         .catch(()=>{return;});