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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, $context = null)
    {
        if (!is_array($value) && !is_array($context)) {
            $this->_error(self::MISSING_VALUE);
            return false;
        }
        if (!is_array($value) && is_array($context)) {
            $value = $context;
        }

if (empty($value[$this->_CHALLENGE]) || empty($value[$this->_RESPONSE])) {
            $this->_error(self::MISSING_VALUE);
            return false;
        }

$service = $this->getService();
        
        $res = $service->verify($value[$this->_CHALLENGE], $value[$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();
    }
}

Nama File / Folder	Size	Action
Dumb.php	1.542KB	Edit File Delete File Rename
Figlet.php	2.193KB	Edit File Delete File Rename
ReCaptcha.php	6.388KB	Edit File Delete File Rename
Word.php	8.625KB	Edit File Delete File Rename