Fix GitHub authentication (#47)

* Restore auth relay patch

Fixes coder/code-server#4795.

* Fix callback URIs behind a sub-path

Author: code-asher

extensions/github-authentication/src/githubServer.ts

@@ -15,7 +15,12 @@ import { Log } from './common/logger';
 const localize = nls.loadMessageBundle();
 
 const NETWORK_ERROR = 'network error';
-const AUTH_RELAY_SERVER = 'vscode-auth.github.com';
+/**
+ * Change the auth relay server to our own as Microsoft's does not support
+ * self-hosted instances.
+ * @author coder
+ */
+const AUTH_RELAY_SERVER = 'auth.code-server.dev';
 // const AUTH_RELAY_STAGING_SERVER = 'client-auth-staging-14a768b.herokuapp.com';
 
 class UriEventHandler extends vscode.EventEmitter<vscode.Uri> implements vscode.UriHandler {

src/vs/code/browser/workbench/workbench.ts

@@ -34,6 +34,12 @@ function doCreateUri(path: string, queryValues: Map<string, string>): URI {
 		});
 	}
 
+	/**
+	 * Preserve the current path so it works with reverse proxies serving behind a
+	 * sub-path.
+	 * @author coder
+	 */
+	path = (window.location.pathname + "/" + path).replace(/\/\/+/g, "/")
 	return URI.parse(window.location.href).with({ path, query });
 }