fixup!: make parent-origin easier to upstream

Author: Joe Previte

patches/parent-origin.diff

@@ -9,17 +9,16 @@ Index: code-server/lib/vscode/src/vs/workbench/contrib/webview/browser/pre/main.
 ===================================================================
 --- code-server.orig/lib/vscode/src/vs/workbench/contrib/webview/browser/pre/main.js
 +++ code-server/lib/vscode/src/vs/workbench/contrib/webview/browser/pre/main.js
-@@ -339,12 +339,7 @@ const hostMessaging = new class HostMess
- 			throw err instanceof Error ? err : new Error(String(err));
- 		}
+@@ -317,6 +317,12 @@ const hostMessaging = new class HostMess
+ 		const id = searchParams.get('id');
 
--		if (hostname === parentOriginHash || hostname.startsWith(parentOriginHash + '.')) {
--			// validation succeeded!
--			return start(parentOrigin);
--		}
--
--		throw new Error(`Expected '${parentOriginHash}' as hostname or subdomain!`);
-+		return start(parentOrigin);
- 	}
- }();
+ 		const hostname = location.hostname;
++
++		// It is safe to run if we are on the same host.
++		const parent = new URL(parentOrigin)
++		if (parent.hostname == location.hostname) {
++			return start(parentOrigin)
++		}
 
+ 		if (!crypto.subtle) {
+ 			// cannot validate, not running in a secure context