fix unable to login if authentication is delegated to another CAS server issue

Author: vasusadariya

app/views/AuthenticationWebView.tsx

@@ -105,10 +105,11 @@ const AuthenticationWebView = () => {
 		}
 		if (authType === 'saml' || authType === 'cas') {
 			const parsedUrl = parse(url, true);
-			// ticket -> cas / validate & saml_idp_credentialToken -> saml
-			if (parsedUrl.pathname?.includes('validate') || parsedUrl.query?.ticket || parsedUrl.query?.saml_idp_credentialToken) {
-				let payload: ICredentials;
-				if (authType === 'saml') {
+		// Only close the webview when redirected back to the Rocket.Chat server
+		// This prevents premature closure when CAS delegates to another CAS server for MFA
+		const isRocketChatServer = url.includes(server);
+		// ticket -> cas / validate & saml_idp_credentialToken -> saml
+		if (isRocketChatServer && (parsedUrl.pathname?.includes('validate') || parsedUrl.query?.ticket || parsedUrl.query?.saml_idp_credentialToken)) {
 					const token = parsedUrl.query?.saml_idp_credentialToken || ssoToken;
 					const credentialToken = { credentialToken: token };
 					payload = { ...credentialToken, saml: true };