Supporting change for CVE-2024-47771 / GHSA-963w-49j9-gxj6

src/@types/global.d.ts

@@ -26,6 +26,7 @@ type ElectronChannel =
     | "userDownloadAction"
     | "openDesktopCapturerSourcePicker"
     | "userAccessToken"
+    | "homeserverUrl"
     | "serverSupportedVersions";
 
 declare global {

src/vector/platform/ElectronPlatform.tsx

@@ -126,6 +126,11 @@ export default class ElectronPlatform extends VectorBasePlatform {
             window.electron!.send("userAccessToken", MatrixClientPeg.get()?.getAccessToken());
         });
 
+        // `homeserverUrl` (IPC) is requested by the main process. A reply is sent over the same channel.
+        window.electron.on("homeserverUrl", () => {
+            window.electron!.send("homeserverUrl", MatrixClientPeg.get()?.getHomeserverUrl());
+        });
+
         // `serverSupportedVersions` is requested by the main process when it needs to know if the
         // server supports a particular version. This is primarily used to detect authenticated media
         // support. A reply is sent over the same channel.