Guard invalid Turnstile site key

backend/config.js

@@ -1,17 +1,19 @@
 require('dotenv').config();
 
-const TURNSTILE_SITE_KEY =
-    process.env.TURNSTILE_SITE_KEY ||
-    process.env.TURNSTILE_SITEKEY ||
-    process.env.VITE_TURNSTILE_SITE_KEY ||
-    process.env.CLOUDFLARE_TURNSTILE_SITE_KEY ||
-    '';
+const firstEnvValue = (...values) => values.find((value) => typeof value === 'string' && value.trim())?.trim() || '';
 
-const TURNSTILE_SECRET =
-    process.env.TURNSTILE_SECRET ||
-    process.env.TURNSTILE_SECRET_KEY ||
-    process.env.CLOUDFLARE_TURNSTILE_SECRET ||
-    '';
+const TURNSTILE_SITE_KEY = firstEnvValue(
+    process.env.TURNSTILE_SITE_KEY,
+    process.env.TURNSTILE_SITEKEY,
+    process.env.VITE_TURNSTILE_SITE_KEY,
+    process.env.CLOUDFLARE_TURNSTILE_SITE_KEY
+);
+
+const TURNSTILE_SECRET = firstEnvValue(
+    process.env.TURNSTILE_SECRET,
+    process.env.TURNSTILE_SECRET_KEY,
+    process.env.CLOUDFLARE_TURNSTILE_SECRET
+);
 
 module.exports = {
     PORT: process.env.PORT || 3004,

backend/routes/authRoutes.js

@@ -4,6 +4,8 @@ const { TURNSTILE_SECRET, TURNSTILE_SITE_KEY } = require('../config');
 
 const router = express.Router();
 const TURNSTILE_VERIFY_URL = 'https://challenges.cloudflare.com/turnstile/v0/siteverify';
+const TURNSTILE_SITE_KEY_PATTERN = /^[0-9]x[0-9A-Za-z_-]{20,}$/;
+const hasValidTurnstileSiteKey = TURNSTILE_SITE_KEY_PATTERN.test(TURNSTILE_SITE_KEY);
 
 const verifyCaptcha = async (captchaToken, remoteIp) => {
     if (!TURNSTILE_SECRET) return true;
@@ -37,7 +39,8 @@ const verifyCaptcha = async (captchaToken, remoteIp) => {
 router.get('/login/config', (req, res) => {
     res.json({
         captchaRequired: Boolean(TURNSTILE_SECRET),
-        turnstileSiteKey: TURNSTILE_SITE_KEY
+        turnstileSiteKey: hasValidTurnstileSiteKey ? TURNSTILE_SITE_KEY : '',
+        captchaConfigured: Boolean(TURNSTILE_SECRET && hasValidTurnstileSiteKey)
     });
 });
 

src/dataService.ts

@@ -57,6 +57,7 @@ const buildDateRangeParams = (dateRange: DateRange) => new URLSearchParams({
 
 export type LoginConfig = {
   captchaRequired: boolean;
+  captchaConfigured: boolean;
   turnstileSiteKey: string;
 };
 

src/pages/Login.tsx

@@ -27,6 +27,7 @@ const securityUnavailableMessage = 'Não foi possível carregar a verificação
 const securityConfigurationMessage = 'Verificação de segurança indisponível. Entre em contato com o administrador.';
 const securityRequiredMessage = 'Conclua a verificação de segurança para continuar.';
 const securityFailedMessage = 'Não foi possível validar a verificação de segurança. Atualize a página e tente novamente.';
+const turnstileSiteKeyPattern = /^[0-9]x[0-9A-Za-z_-]{20,}$/;
 
 const Login = () => {
   const [email, setEmail] = useState('');
@@ -41,8 +42,9 @@ const Login = () => {
   const captchaContainerRef = useRef<HTMLDivElement | null>(null);
   const captchaWidgetIdRef = useRef<string | null>(null);
   const navigate = useNavigate();
-  const captchaEnabled = Boolean(captchaRequired && turnstileSiteKey);
-  const securityMisconfigured = captchaRequired && !turnstileSiteKey;
+  const hasValidSiteKey = turnstileSiteKeyPattern.test(turnstileSiteKey);
+  const captchaEnabled = Boolean(captchaRequired && hasValidSiteKey);
+  const securityMisconfigured = captchaRequired && !hasValidSiteKey;
 
   useEffect(() => {
     let isMounted = true;
@@ -53,9 +55,9 @@ const Login = () => {
         if (!isMounted) return;
 
         setCaptchaRequired(config.captchaRequired);
-        setTurnstileSiteKey(config.turnstileSiteKey);
+        setTurnstileSiteKey(config.turnstileSiteKey.trim());
         setCaptchaReady(!config.captchaRequired);
-        if (config.captchaRequired && !config.turnstileSiteKey) {
+        if (config.captchaRequired && !config.captchaConfigured) {
           setError(securityConfigurationMessage);
         }
       } catch {
@@ -77,13 +79,14 @@ const Login = () => {
   }, []);
 
   useEffect(() => {
-    if (!turnstileSiteKey || !captchaContainerRef.current || captchaWidgetIdRef.current) return;
+    if (!hasValidSiteKey || !captchaContainerRef.current || captchaWidgetIdRef.current) return;
 
     const siteKey = turnstileSiteKey;
 
     const renderCaptcha = () => {
       if (!window.turnstile || !captchaContainerRef.current || captchaWidgetIdRef.current) return;
 
+      try {
         captchaWidgetIdRef.current = window.turnstile.render(captchaContainerRef.current, {
           sitekey: siteKey,
           theme: 'dark',
@@ -102,6 +105,11 @@ const Login = () => {
           },
         });
         setCaptchaReady(true);
+      } catch {
+        setCaptchaToken('');
+        setCaptchaReady(false);
+        setError(securityConfigurationMessage);
+      }
     };
 
     if (window.turnstile) {
@@ -128,7 +136,7 @@ const Login = () => {
     document.head.appendChild(script);
 
     return () => script.removeEventListener('load', renderCaptcha);
-  }, [turnstileSiteKey]);
+  }, [hasValidSiteKey, turnstileSiteKey]);
 
   const handleLogin = async (e: React.FormEvent) => {
     e.preventDefault();