registry = $registry;
$this->DB = $this->registry->DB();
$this->settings =& $this->registry->fetchSettings();
$this->request =& $this->registry->fetchRequest();
$this->lang = $this->registry->getClass('class_localization');
$this->member = $this->registry->member();
$this->memberData =& $this->registry->member()->fetchMemberData();
/* Settings */
$this->public_key = trim( $this->settings['recaptcha_public_key'] );
$this->private_key = trim( $this->settings['recaptcha_private_key'] );
$this->useSSL = $this->settings['logins_over_https'];
}
/**
* Gets the challenge HTML (javascript and non-javascript version).
* This is called from the browser, and the resulting reCAPTCHA HTML widget
* is embedded within the HTML form it was called from.
*
* @access public
* @return string Form HTML to display
*/
public function getTemplate()
{
if ( ! $this->public_key )
{
return '';
}
if ($this->useSSL)
{
$server = RECAPTCHA_API_SECURE_SERVER;
}
else
{
$server = RECAPTCHA_API_SERVER;
}
$html = '';
$html .= "";
$html .= '
';
//-----------------------------------------
// Return Template Bit
//-----------------------------------------
return $this->registry->output->getTemplate('global_other')->captchaRecaptcha( $html );
}
/**
* Validate the input code
*
* @access public
* @return boolean Validation successful
* @since 1.0
*/
public function validate()
{
if ( !$this->private_key )
{
return '';
}
$captcha_unique_id = $_REQUEST['recaptcha_challenge_field'];
$captcha_input = $_REQUEST['recaptcha_response_field'];
if ( $captcha_input == null || strlen($captcha_input) == 0 || $captcha_unique_id == null || strlen($captcha_unique_id) == 0)
{
return false;
}
$response = $this->_recaptchaPost( RECAPTCHA_VERIFY_SERVER, "/verify",
array (
'privatekey' => $this->private_key,
'remoteip' => $this->member->ip_address,
'challenge' => $captcha_unique_id,
'response' => $captcha_input
)
);
$answers = explode( "\n", $response [1] );
if ( trim($answers[0]) == 'true' )
{
return TRUE;
}
else
{
/**
* It's an error
*/
$this->error = $answers[1];
return FALSE;
}
}
/**
* Gets a URL where the user can sign up for reCAPTCHA. If your application
* has a configuration page where you enter a key, you should provide a link
* using this function.
*
* @access public
* @param string $domain The domain where the page is hosted
* @param string $appname The name of your application
*/
public function getSignupUrl( $domain = null, $appname = null )
{
return "http://recaptcha.net/api/getkey?" . $this->_encodeQueryString( array( 'domain' => $domain, 'app' => $appname ) );
}
/**
* Submits an HTTP POST to a reCAPTCHA server
*
* @access private
* @param string $host
* @param string $path
* @param array $data
* @param int port
* @return array response
*/
private function _recaptchaPost( $host, $path, $data, $port = 80 )
{
$req = $this->_encodeQueryString( $data );
$http_request = "POST $path HTTP/1.0\r\n";
$http_request .= "Host: $host\r\n";
$http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n";
$http_request .= "Content-Length: " . strlen($req) . "\r\n";
$http_request .= "User-Agent: reCAPTCHA/PHP\r\n";
$http_request .= "\r\n";
$http_request .= $req;
$response = '';
if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) )
{
return false;
}
fwrite($fs, $http_request);
while ( !feof($fs) )
{
$response .= fgets($fs, 1160); // One TCP-IP packet
}
fclose($fs);
$response = explode( "\r\n\r\n", $response, 2 );
return $response;
}
/**
* Encode array of data into a query string
*
* @access private
* @param array $data
* @return string query string
*/
private function _encodeQueryString( $data )
{
$req = "";
foreach ( $data as $key => $value )
{
$req .= $key . '=' . urlencode( stripslashes($value) ) . '&';
}
// Cut the last '&'
$req = substr( $req, 0, strlen($req)-1 );
return $req;
}
}