--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Mail/Protocol/Smtp/Auth/Crammd5.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,108 @@
+<?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_Mail
+ * @subpackage Protocol
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Crammd5.php 22653 2010-07-22 18:41:39Z mabe $
+ */
+
+
+/**
+ * @see Zend_Mail_Protocol_Smtp
+ */
+require_once 'Zend/Mail/Protocol/Smtp.php';
+
+
+/**
+ * Performs CRAM-MD5 authentication
+ *
+ * @category   Zend
+ * @package    Zend_Mail
+ * @subpackage Protocol
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Mail_Protocol_Smtp_Auth_Crammd5 extends Zend_Mail_Protocol_Smtp
+{
+    /**
+     * Constructor.
+     *
+     * @param  string $host   (Default: 127.0.0.1)
+     * @param  int    $port   (Default: null)
+     * @param  array  $config Auth-specific parameters
+     * @return void
+     */
+    public function __construct($host = '127.0.0.1', $port = null, $config = null)
+    {
+        if (is_array($config)) {
+            if (isset($config['username'])) {
+                $this->_username = $config['username'];
+            }
+            if (isset($config['password'])) {
+                $this->_password = $config['password'];
+            }
+        }
+
+        parent::__construct($host, $port, $config);
+    }
+
+
+    /**
+     * @todo Perform CRAM-MD5 authentication with supplied credentials
+     *
+     * @return void
+     */
+    public function auth()
+    {
+        // Ensure AUTH has not already been initiated.
+        parent::auth();
+
+        $this->_send('AUTH CRAM-MD5');
+        $challenge = $this->_expect(334);
+        $challenge = base64_decode($challenge);
+        $digest = $this->_hmacMd5($this->_password, $challenge);
+        $this->_send(base64_encode($this->_username . ' ' . $digest));
+        $this->_expect(235);
+        $this->_auth = true;
+    }
+
+
+    /**
+     * Prepare CRAM-MD5 response to server's ticket
+     *
+     * @param  string $key   Challenge key (usually password)
+     * @param  string $data  Challenge data
+     * @param  string $block Length of blocks
+     * @return string
+     */
+    protected function _hmacMd5($key, $data, $block = 64)
+    {
+        if (strlen($key) > 64) {
+            $key = pack('H32', md5($key));
+        } elseif (strlen($key) < 64) {
+            $key = str_pad($key, $block, "\0");
+        }
+
+        $k_ipad = substr($key, 0, 64) ^ str_repeat(chr(0x36), 64);
+        $k_opad = substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64);
+
+        $inner = pack('H32', md5($k_ipad . $data));
+        $digest = md5($k_opad . $inner);
+
+        return $digest;
+    }
+}