- Backported r5093

plugins/http_authentication/http_authentication.php

@@ -5,7 +5,7 @@
  *
  * Make use of an existing HTTP authentication and perform login with the existing user credentials
  *
- * @version 1.2
+ * @version 1.3
  * @author Thomas Bruederli
  */
 class http_authentication extends rcube_plugin
@@ -30,6 +30,12 @@ class http_authentication extends rcube_plugin
 
   function authenticate($args)
   {
+    // Allow entering other user data in login form,
+    // e.g. after log out (#1487953)
+    if (!empty($args['user'])) {
+        return $args;
+    }
+
     if (!empty($_SERVER['PHP_AUTH_USER']) && !empty($_SERVER['PHP_AUTH_PW'])) {
       $args['user'] = $_SERVER['PHP_AUTH_USER'];
       $args['pass'] = $_SERVER['PHP_AUTH_PW'];