Preserve a query string when redirecting to and from login

public/scripts/login.js

@@ -177,9 +177,10 @@ function displayError(message) {
 
 /**
  * Redirects the user to the home page.
+ * Preserves the query string.
  */
 function redirectToHome() {
-    window.location.href = '/';
+    window.location.href = '/' + window.location.search;
 }
 
 /**

server.js

@@ -248,7 +248,9 @@ if (!disableCsrf) {
 // Host index page
 app.get('/', (request, response) => {
     if (userModule.shouldRedirectToLogin(request)) {
-        return response.redirect('/login');
+        const query = request.url.split('?')[1];
+        const redirectUrl = query ? `/login?${query}` : '/login';
+        return response.redirect(redirectUrl);
     }
 
     return response.sendFile('index.html', { root: path.join(process.cwd(), 'public') });

src/users.js

@@ -326,7 +326,7 @@ function toAvatarKey(handle) {
 }
 
 /**
- * Initializes the user storage. Currently a no-op.
+ * Initializes the user storage.
  * @param {string} dataRoot The root directory for user data
  * @returns {Promise<void>}
  */
@@ -655,6 +655,10 @@ async function createBackupArchive(handle, response) {
     archive.finalize();
 }
 
+/**
+ * Checks if any admin users are not password protected. If so, logs a warning.
+ * @returns {Promise<void>}
+ */
 async function checkAccountsProtection() {
     if (!ENABLE_ACCOUNTS) {
         return;