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<?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_Filter
* @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: Encrypt.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/**
* @see Zend_Filter_Interface
*/
require_once 'Zend/Filter/Interface.php';
/**
* @see Zend_Loader
*/
require_once 'Zend/Loader.php';
/**
* Encrypts a given string
*
* @category Zend
* @package Zend_Filter
* @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_Filter_Encrypt implements Zend_Filter_Interface
{
/**
* Encryption adapter
*/
protected $_adapter;
/**
* Class constructor
*
* @param string|array $options (Optional) Options to set, if null mcrypt is used
*/
public function __construct($options = null)
{
if ($options instanceof Zend_Config) {
$options = $options->toArray();
}
$this->setAdapter($options);
}
/**
* Returns the name of the set adapter
*
* @return string
*/
public function getAdapter()
{
return $this->_adapter->toString();
}
/**
* Sets new encryption options
*
* @param string|array $options (Optional) Encryption options
* @return Zend_Filter_Encrypt
*/
public function setAdapter($options = null)
{
if (is_string($options)) {
$adapter = $options;
} else if (isset($options['adapter'])) {
$adapter = $options['adapter'];
unset($options['adapter']);
} else {
$adapter = 'Mcrypt';
}
if (!is_array($options)) {
$options = array();
}
if (Zend_Loader::isReadable('Zend/Filter/Encrypt/' . ucfirst($adapter). '.php')) {
$adapter = 'Zend_Filter_Encrypt_' . ucfirst($adapter);
}
if (!class_exists($adapter)) {
Zend_Loader::loadClass($adapter);
}
$this->_adapter = new $adapter($options);
if (!$this->_adapter instanceof Zend_Filter_Encrypt_Interface) {
require_once 'Zend/Filter/Exception.php';
throw new Zend_Filter_Exception("Encoding adapter '" . $adapter . "' does not implement Zend_Filter_Encrypt_Interface");
}
return $this;
}
/**
* Calls adapter methods
*
* @param string $method Method to call
* @param string|array $options Options for this method
*/
public function __call($method, $options)
{
$part = substr($method, 0, 3);
if ((($part != 'get') and ($part != 'set')) or !method_exists($this->_adapter, $method)) {
require_once 'Zend/Filter/Exception.php';
throw new Zend_Filter_Exception("Unknown method '{$method}'");
}
return call_user_func_array(array($this->_adapter, $method), $options);
}
/**
* Defined by Zend_Filter_Interface
*
* Encrypts the content $value with the defined settings
*
* @param string $value Content to encrypt
* @return string The encrypted content
*/
public function filter($value)
{
return $this->_adapter->encrypt($value);
}
}
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