Current File : /www/varak.net/paste.varak.net-5.6/vendor/laravel/framework/src/Illuminate/Exception/Handler.php
<?php namespace Illuminate\Exception;
use Closure;
use ErrorException;
use ReflectionFunction;
use Illuminate\Support\Contracts\ResponsePreparerInterface;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
use Symfony\Component\Debug\Exception\FatalErrorException as FatalError;
class Handler {
/**
* The response preparer implementation.
*
* @var \Illuminate\Support\Contracts\ResponsePreparerInterface
*/
protected $responsePreparer;
/**
* The plain exception displayer.
*
* @var \Illuminate\Exception\ExceptionDisplayerInterface
*/
protected $plainDisplayer;
/**
* The debug exception displayer.
*
* @var \Illuminate\Exception\ExceptionDisplayerInterface
*/
protected $debugDisplayer;
/**
* Indicates if the application is in debug mode.
*
* @var bool
*/
protected $debug;
/**
* All of the register exception handlers.
*
* @var array
*/
protected $handlers = array();
/**
* All of the handled error messages.
*
* @var array
*/
protected $handled = array();
/**
* Create a new error handler instance.
*
* @param \Illuminate\Support\Contracts\ResponsePreparerInterface $responsePreparer
* @param \Illuminate\Exception\ExceptionDisplayerInterface $plainDisplayer
* @param \Illuminate\Exception\ExceptionDisplayerInterface $debugDisplayer
* @param bool $debug
* @return void
*/
public function __construct(ResponsePreparerInterface $responsePreparer,
ExceptionDisplayerInterface $plainDisplayer,
ExceptionDisplayerInterface $debugDisplayer,
$debug = true)
{
$this->debug = $debug;
$this->plainDisplayer = $plainDisplayer;
$this->debugDisplayer = $debugDisplayer;
$this->responsePreparer = $responsePreparer;
}
/**
* Register the exception / error handlers for the application.
*
* @param string $environment
* @return void
*/
public function register($environment)
{
$this->registerErrorHandler();
$this->registerExceptionHandler();
if ($environment != 'testing') $this->registerShutdownHandler();
}
/**
* Register the PHP error handler.
*
* @return void
*/
protected function registerErrorHandler()
{
set_error_handler(array($this, 'handleError'));
}
/**
* Register the PHP exception handler.
*
* @return void
*/
protected function registerExceptionHandler()
{
set_exception_handler(array($this, 'handleUncaughtException'));
}
/**
* Register the PHP shutdown handler.
*
* @return void
*/
protected function registerShutdownHandler()
{
register_shutdown_function(array($this, 'handleShutdown'));
}
/**
* Handle a PHP error for the application.
*
* @param int $level
* @param string $message
* @param string $file
* @param int $line
* @param array $context
*
* @throws \ErrorException
*/
public function handleError($level, $message, $file = '', $line = 0, $context = array())
{
if (error_reporting() & $level)
{
throw new ErrorException($message, 0, $level, $file, $line);
}
}
/**
* Handle an exception for the application.
*
* @param \Exception $exception
* @return \Symfony\Component\HttpFoundation\Response
*/
public function handleException($exception)
{
$response = $this->callCustomHandlers($exception);
// If one of the custom error handlers returned a response, we will send that
// response back to the client after preparing it. This allows a specific
// type of exceptions to handled by a Closure giving great flexibility.
if ( ! is_null($response))
{
return $this->prepareResponse($response);
}
// If no response was sent by this custom exception handler, we will call the
// default exception displayer for the current application context and let
// it show the exception to the user / developer based on the situation.
return $this->displayException($exception);
}
/**
* Handle an uncaught exception.
*
* @param \Exception $exception
* @return void
*/
public function handleUncaughtException($exception)
{
$this->handleException($exception)->send();
}
/**
* Handle the PHP shutdown event.
*
* @return void
*/
public function handleShutdown()
{
$error = error_get_last();
// If an error has occurred that has not been displayed, we will create a fatal
// error exception instance and pass it into the regular exception handling
// code so it can be displayed back out to the developer for information.
if ( ! is_null($error))
{
extract($error);
if ( ! $this->isFatal($type)) return;
$this->handleException(new FatalError($message, $type, 0, $file, $line))->send();
}
}
/**
* Determine if the error type is fatal.
*
* @param int $type
* @return bool
*/
protected function isFatal($type)
{
return in_array($type, array(E_ERROR, E_CORE_ERROR, E_COMPILE_ERROR, E_PARSE));
}
/**
* Handle a console exception.
*
* @param \Exception $exception
* @return void
*/
public function handleConsole($exception)
{
return $this->callCustomHandlers($exception, true);
}
/**
* Handle the given exception.
*
* @param \Exception $exception
* @param bool $fromConsole
* @return void
*/
protected function callCustomHandlers($exception, $fromConsole = false)
{
foreach ($this->handlers as $handler)
{
// If this exception handler does not handle the given exception, we will just
// go the next one. A handler may type-hint an exception that it handles so
// we can have more granularity on the error handling for the developer.
if ( ! $this->handlesException($handler, $exception))
{
continue;
}
elseif ($exception instanceof HttpExceptionInterface)
{
$code = $exception->getStatusCode();
}
// If the exception doesn't implement the HttpExceptionInterface, we will just
// use the generic 500 error code for a server side error. If it implements
// the HttpException interfaces we'll grab the error code from the class.
else
{
$code = 500;
}
// We will wrap this handler in a try / catch and avoid white screens of death
// if any exceptions are thrown from a handler itself. This way we will get
// at least some errors, and avoid errors with no data or not log writes.
try
{
$response = $handler($exception, $code, $fromConsole);
}
catch (\Exception $e)
{
$response = $this->formatException($e);
}
// If this handler returns a "non-null" response, we will return it so it will
// get sent back to the browsers. Once the handler returns a valid response
// we will cease iterating through them and calling these other handlers.
if (isset($response) && ! is_null($response))
{
return $response;
}
}
}
/**
* Display the given exception to the user.
*
* @param \Exception $exception
* @return void
*/
protected function displayException($exception)
{
$displayer = $this->debug ? $this->debugDisplayer : $this->plainDisplayer;
return $displayer->display($exception);
}
/**
* Determine if the given handler handles this exception.
*
* @param \Closure $handler
* @param \Exception $exception
* @return bool
*/
protected function handlesException(Closure $handler, $exception)
{
$reflection = new ReflectionFunction($handler);
return $reflection->getNumberOfParameters() == 0 || $this->hints($reflection, $exception);
}
/**
* Determine if the given handler type hints the exception.
*
* @param \ReflectionFunction $reflection
* @param \Exception $exception
* @return bool
*/
protected function hints(ReflectionFunction $reflection, $exception)
{
$parameters = $reflection->getParameters();
$expected = $parameters[0];
return ! $expected->getClass() || $expected->getClass()->isInstance($exception);
}
/**
* Format an exception thrown by a handler.
*
* @param \Exception $e
* @return string
*/
protected function formatException(\Exception $e)
{
if ($this->debug)
{
$location = $e->getMessage().' in '.$e->getFile().':'.$e->getLine();
return 'Error in exception handler: '.$location;
}
return 'Error in exception handler.';
}
/**
* Register an application error handler.
*
* @param \Closure $callback
* @return void
*/
public function error(Closure $callback)
{
array_unshift($this->handlers, $callback);
}
/**
* Register an application error handler at the bottom of the stack.
*
* @param \Closure $callback
* @return void
*/
public function pushError(Closure $callback)
{
$this->handlers[] = $callback;
}
/**
* Prepare the given response.
*
* @param mixed $response
* @return \Illuminate\Http\Response
*/
protected function prepareResponse($response)
{
return $this->responsePreparer->prepareResponse($response);
}
/**
* Determine if we are running in the console.
*
* @return bool
*/
public function runningInConsole()
{
return php_sapi_name() == 'cli';
}
/**
* Set the debug level for the handler.
*
* @param bool $debug
* @return void
*/
public function setDebug($debug)
{
$this->debug = $debug;
}
}
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