diff -r 877f952ae2bd -r 6b6c2214f778 web/lib/Zend/Validate/Ldap/Dn.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Validate/Ldap/Dn.php	Thu Mar 21 19:52:38 2013 +0100
@@ -0,0 +1,65 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Validate
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Abstract.php 24807 2012-05-15 12:10:42Z adamlundrigan $
+ */
+
+/**
+ * @see Zend_Validate_Interface
+ */
+require_once 'Zend/Validate/Abstract.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Validate
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Validate_Ldap_Dn extends Zend_Validate_Abstract
+{
+
+    const MALFORMED = 'malformed';
+    
+    /**
+     * Validation failure message template definitions.
+     *
+     * @var array
+     */
+    protected $_messageTemplates = array(
+        self::MALFORMED => 'DN is malformed',
+    );
+    
+    /**
+     * Defined by Zend_Validate_Interface.
+     *
+     * Returns true if and only if $value is a valid DN.
+     *
+     * @param string $value The value to be validated.
+     * 
+     * @return boolean
+     */
+    public function isValid($value) 
+    {
+        $valid = Zend_Ldap_Dn::checkDn($value);
+        if ($valid === false) {
+            $this->_error(self::MALFORMED);
+            return false;
+        }
+        return true;
+    }
+}
\ No newline at end of file