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import v1.0.0-RC4 | 2009-05-20

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libs/Zend/Captcha/ReCaptcha.php Normal file
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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_Captcha
* @subpackage Adapter
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_Captcha_Base */
require_once 'Zend/Captcha/Base.php';
/** Zend_Service_ReCaptcha */
require_once 'Zend/Service/ReCaptcha.php';
/**
* ReCaptcha adapter
*
* Allows to insert captchas driven by ReCaptcha service
*
* @see http://recaptcha.net/apidocs/captcha/
*
* @category Zend
* @package Zend_Captcha
* @subpackage Adapter
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: $
*/
class Zend_Captcha_ReCaptcha extends Zend_Captcha_Base
{
/**
* Recaptcha public key
*
* @var string
*/
protected $_pubkey;
/**
* Recaptcha private key
*
* @var string
*/
protected $_privkey;
/**@+
* ReCaptcha Field names
* @var string
*/
protected $_CHALLENGE = 'recaptcha_challenge_field';
protected $_RESPONSE = 'recaptcha_response_field';
/**@-*/
/**
* Recaptcha service object
*
* @var Zend_Service_Recaptcha
*/
protected $_service;
/**
* Parameters defined by the service
*
* @var array
*/
protected $_serviceParams = array();
/**#@+
* Error codes
* @const string
*/
const MISSING_VALUE = 'missingValue';
const ERR_CAPTCHA = 'errCaptcha';
const BAD_CAPTCHA = 'badCaptcha';
/**#@-*/
/**
* Error messages
* @var array
*/
protected $_messageTemplates = array(
self::MISSING_VALUE => 'Missing captcha fields',
self::ERR_CAPTCHA => 'Failed to validate captcha',
self::BAD_CAPTCHA => 'Captcha value is wrong: %value%',
);
/**
* Retrieve ReCaptcha Private key
*
* @return string
*/
public function getPrivkey()
{
return $this->_privkey;
}
/**
* Retrieve ReCaptcha Public key
*
* @return string
*/
public function getPubkey()
{
return $this->_pubkey;
}
/**
* Set ReCaptcha Private key
*
* @param string $_privkey
* @return Zend_Captcha_ReCaptcha
*/
public function setPrivkey($privkey)
{
$this->_privkey = $privkey;
return $this;
}
/**
* Set ReCaptcha public key
*
* @param string $_pubkey
* @return Zend_Captcha_ReCaptcha
*/
public function setPubkey($pubkey)
{
$this->_pubkey = $pubkey;
return $this;
}
/**
* Constructor
*
* @param array|Zend_Config $options
* @return void
*/
public function __construct($options = null)
{
parent::__construct($options);
$this->setService(new Zend_Service_ReCaptcha($this->getPubKey(), $this->getPrivKey()));
$this->_serviceParams = $this->getService()->getParams();
if ($options instanceof Zend_Config) {
$options = $options->toArray();
}
if (!empty($options)) {
$this->setOptions($options);
}
}
/**
* Set service object
*
* @param Zend_Service_ReCaptcha $service
* @return Zend_Captcha_ReCaptcha
*/
public function setService(Zend_Service_ReCaptcha $service)
{
$this->_service = $service;
return $this;
}
/**
* Retrieve ReCaptcha service object
*
* @return Zend_Service_ReCaptcha
*/
public function getService()
{
return $this->_service;
}
/**
* Set option
*
* If option is a service parameter, proxies to the service.
*
* @param string $key
* @param mixed $value
* @return Zend_Captcha_ReCaptcha
*/
public function setOption($key, $value)
{
$service = $this->getService();
if (isset($this->_serviceParams[$key])) {
$service->setParam($key, $value);
return $this;
}
return parent::setOption($key, $value);
}
/**
* Generate captcha
*
* @see Zend_Form_Captcha_Adapter::generate()
* @return string
*/
public function generate()
{
return "";
}
/**
* Validate captcha
*
* @see Zend_Validate_Interface::isValid()
* @param mixed $value
* @return boolean
*/
public function isValid($value, $context = null)
{
if (empty($context[$this->_CHALLENGE]) || empty($context[$this->_RESPONSE])) {
$this->_error(self::MISSING_VALUE);
return false;
}
$service = $this->getService();
$res = $service->verify($context[$this->_CHALLENGE], $context[$this->_RESPONSE]);
if (!$res) {
$this->_error(self::ERR_CAPTCHA);
return false;
}
if (!$res->isValid()) {
$this->_error(self::BAD_CAPTCHA, $res->getErrorCode());
$service->setParam('error', $res->getErrorCode());
return false;
}
return true;
}
/**
* Render captcha
*
* @param Zend_View $view
* @param mixed $element
* @return string
*/
public function render(Zend_View_Interface $view, $element = null)
{
return $this->getService()->getHTML();
}
}