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<?php
/**
* Project: 4SEO
*
* @package 4SEO
* @copyright Copyright Weeblr llc - 2020-2024
* @author Yannick Gaultier - Weeblr llc
* @license GNU General Public License version 3; see LICENSE.md
* @version 6.2.0.2478
* @date 2024-10-03
*/
namespace Weeblr\Forseo\Platform;
use Weeblr\Wblib\Forseo\Base;
use Weeblr\Wblib\Forseo\System;
use Joomla\CMS\Exception;
// no direct access
defined('_JEXEC') || defined('WBLIB_EXEC') || die;
/**
* Intercepts errors on Joomla 3. init method only called on the frontend.
*
* @package Weeblr\Forseo\Platform
*/
class Errorhandlerj3 extends Base\Base
{
/**
* @var callable The upstream error handler, shared with all Joomla versions.
*/
private $appHandler = null;
/**
* @var callable Pre-existing Joomla exception handler, used when 4SEO should not handle an exception.
*/
private $platformExceptionHandler = null;
/**
* Hooks up with Joomla 3 event dispatching to intercept 404 errors.
*
* @param callable $appHandler
*/
public function init($appHandler)
{
$this->appHandler = $appHandler;
\JError::setErrorHandling(
E_ERROR,
'callback',
[
$this,
'handleError'
]
);
$this->platformExceptionHandler = set_exception_handler(
[
$this,
'exceptionProxy'
]
);
}
/**
* Proxy method for handling exception and passing them
* on to the shared error/Exception handler.
*
* Copied from Joomla redirect system plugin.
*
* @param \Thowable|\Exception $exception
*
* @throws \Throwable
*/
public function exceptionProxy($exception)
{
// If this isn't a Throwable then bail out
if (!($exception instanceof \Throwable) && !($exception instanceof \Exception))
{
throw new InvalidArgumentException(
sprintf('The error handler requires an Exception or Throwable object, a "%s" object was given instead.', get_class($exception))
);
}
$this->handleError($exception);
}
/**
* Joomla 3 wrapper around error handling. Calls 4SEO error handler
* and pass-thru to previous Joomla error handler if 4SEO should not handle.
*
* @param \Throwable| \Exception $error
*
* @throws \Throwable
*/
public function handleError($error)
{
// pass on to 4SEO: if handled, it won't return.
call_user_func_array(
$this->appHandler,
[$error]
);
// Proxy to the previous exception handler if available, otherwise just render the error page
if ($this->platformExceptionHandler)
{
call_user_func_array(
$this->platformExceptionHandler,
[$error]
);
}
else
{
Exception\ExceptionHandler::render($error);
}
}
}