139 lines
2.9 KiB
PHP
139 lines
2.9 KiB
PHP
<?php
|
|
/**
|
|
* @brief Captcha class for Form Builder
|
|
* @author <a href='http://www.invisionpower.com'>Invision Power Services, Inc.</a>
|
|
* @copyright (c) 2001 - 2016 Invision Power Services, Inc.
|
|
* @license http://www.invisionpower.com/legal/standards/
|
|
* @package IPS Community Suite
|
|
* @since 18 Apr 2013
|
|
* @version SVN_VERSION_NUMBER
|
|
*/
|
|
|
|
namespace IPS\Helpers\Form;
|
|
|
|
/* To prevent PHP errors (extending class does not exist) revealing path */
|
|
if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
|
|
{
|
|
header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
|
|
exit;
|
|
}
|
|
|
|
/**
|
|
* Captcha class for Form Builder
|
|
*/
|
|
class _Captcha extends FormAbstract
|
|
{
|
|
/**
|
|
* CAPTCHA Class
|
|
*/
|
|
protected $captcha = NULL;
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @see \IPS\Helpers\Form\Abstract::__construct
|
|
* @return void
|
|
*/
|
|
public function __construct()
|
|
{
|
|
$params = func_get_args();
|
|
if ( !isset( $params[0] ) )
|
|
{
|
|
$params[0] = 'captcha_field';
|
|
}
|
|
|
|
if ( \IPS\Settings::i()->bot_antispam_type != 'none' )
|
|
{
|
|
$class = '\IPS\Helpers\Form\Captcha\\' . ucfirst( \IPS\Settings::i()->bot_antispam_type );
|
|
if ( !class_exists( $class ) )
|
|
{
|
|
\IPS\Output::i()->error( 'unexpected_captcha', '4S262/1', 500, 'unexpected_captcha_admin' );
|
|
}
|
|
$this->captcha = new $class;
|
|
}
|
|
|
|
call_user_func_array( 'parent::__construct', $params );
|
|
$this->required = TRUE;
|
|
}
|
|
|
|
/**
|
|
* Get HTML
|
|
*
|
|
* @return string
|
|
*/
|
|
public function __toString()
|
|
{
|
|
if ( $this->captcha === NULL )
|
|
{
|
|
return '';
|
|
}
|
|
return parent::__toString();
|
|
}
|
|
|
|
/**
|
|
* Get HTML
|
|
*
|
|
* @return string
|
|
*/
|
|
public function html()
|
|
{
|
|
if ( $this->captcha === NULL )
|
|
{
|
|
return '';
|
|
}
|
|
return $this->captcha->getHtml();
|
|
}
|
|
|
|
/**
|
|
* Get Value
|
|
*
|
|
* @return bool|null TRUE/FALSE indicate if the test passed or not. NULL indicates the test failed, but the captcha system will display an error so we don't have to.
|
|
*/
|
|
public function getValue()
|
|
{
|
|
if ( $this->captcha === NULL )
|
|
{
|
|
return TRUE;
|
|
}
|
|
else
|
|
{
|
|
/* If we previously did an AJAX validate which is still valid, return true */
|
|
if ( isset( $_SESSION[ 'captcha-val-' . $this->name ] ) and $_SESSION[ 'captcha-val-' . $this->name ] > ( time() - 60 ) )
|
|
{
|
|
unset( $_SESSION[ 'captcha-val-' . $this->name ] );
|
|
return TRUE;
|
|
}
|
|
/* Otherwise, check with service */
|
|
else
|
|
{
|
|
/* Check */
|
|
$return = $this->captcha->verify();
|
|
|
|
/* If it's valid and we're doing an AJAX validate, save that in the session so the next request doesn't check again */
|
|
if ( $return and \IPS\Request::i()->isAjax() )
|
|
{
|
|
$_SESSION[ 'captcha-val-' . $this->name ] = time();
|
|
}
|
|
|
|
/* Return */
|
|
return $return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Validate
|
|
*
|
|
* @throws \InvalidArgumentException
|
|
* @return TRUE
|
|
*/
|
|
public function validate()
|
|
{
|
|
if ( $this->value !== TRUE )
|
|
{
|
|
throw new \InvalidArgumentException( 'form_bad_captcha' );
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
} |