Require the user to log in before submitting NUIDs

index.php

@@ -2,15 +2,28 @@
 
 require_once 'config.inc.php';
 
-if (!isset($_FILES, $_FILES['userfile'])) {
-    echo '
-    <h1>Upload a file containing NUIDs</h1>
+$auth = UNL_Auth::factory('SimpleCAS');
+
+if (isset($_GET['logout'])) {
+    $auth->logout();
+}
+
+if (!$auth->isLoggedIn()) {
+    echo "You must log in first";
+    $auth->login();
+    exit;
+}
+
+echo '<h1>Upload a file containing NUIDs</h1>
     <form action="" method="post" enctype="multipart/form-data">
         File <input type="file" name="userfile" />
         <input type="submit" name="submit" />
     </form>
-    ';
-    exit;
+    <a href="?logout">Logout</a>';
+
+if (!isset($_FILES, $_FILES['userfile'])) {
+    echo 'Upload a file';
+    exit();
 }
 
 if (!($contents = file($_FILES['userfile']['tmp_name']))) {