cakephp2-php8/lib/Cake/Error/ErrorHandler.php
Ceeram 6bf9363217 Add option to skip exception types for logging.
add blacklisting for logging exceptions

add test for skipping exception logging, and fix typo and cs

add example to docblock in core.php for skipLog

remove app_error.php skips, those are no longer used in 2.x

use assertContains instead of assertRegExp

check for instanceof, instead of matching names
2013-03-26 15:11:39 +01:00

304 lines
10 KiB
PHP

<?php
/**
* Error handler
*
* Provides Error Capturing for Framework errors.
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.Error
* @since CakePHP(tm) v 0.10.5.1732
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::uses('Debugger', 'Utility');
App::uses('CakeLog', 'Log');
App::uses('ExceptionRenderer', 'Error');
App::uses('Router', 'Routing');
/**
*
* Error Handler provides basic error and exception handling for your application. It captures and
* handles all unhandled exceptions and errors. Displays helpful framework errors when debug > 1.
*
* ### Uncaught exceptions
*
* When debug < 1 a CakeException will render 404 or 500 errors. If an uncaught exception is thrown
* and it is a type that ErrorHandler does not know about it will be treated as a 500 error.
*
* ### Implementing application specific exception handling
*
* You can implement application specific exception handling in one of a few ways. Each approach
* gives you different amounts of control over the exception handling process.
*
* - Set Configure::write('Exception.handler', 'YourClass::yourMethod');
* - Create AppController::appError();
* - Set Configure::write('Exception.renderer', 'YourClass');
*
* #### Create your own Exception handler with `Exception.handler`
*
* This gives you full control over the exception handling process. The class you choose should be
* loaded in your app/Config/bootstrap.php, so its available to handle any exceptions. You can
* define the handler as any callback type. Using Exception.handler overrides all other exception
* handling settings and logic.
*
* #### Using `AppController::appError();`
*
* This controller method is called instead of the default exception rendering. It receives the
* thrown exception as its only argument. You should implement your error handling in that method.
* Using AppController::appError(), will supersede any configuration for Exception.renderer.
*
* #### Using a custom renderer with `Exception.renderer`
*
* If you don't want to take control of the exception handling, but want to change how exceptions are
* rendered you can use `Exception.renderer` to choose a class to render exception pages. By default
* `ExceptionRenderer` is used. Your custom exception renderer class should be placed in app/Lib/Error.
*
* Your custom renderer should expect an exception in its constructor, and implement a render method.
* Failing to do so will cause additional errors.
*
* #### Logging exceptions
*
* Using the built-in exception handling, you can log all the exceptions
* that are dealt with by ErrorHandler by setting `Exception.log` to true in your core.php.
* Enabling this will log every exception to CakeLog and the configured loggers.
*
* ### PHP errors
*
* Error handler also provides the built in features for handling php errors (trigger_error).
* While in debug mode, errors will be output to the screen using debugger. While in production mode,
* errors will be logged to CakeLog. You can control which errors are logged by setting
* `Error.level` in your core.php.
*
* #### Logging errors
*
* When ErrorHandler is used for handling errors, you can enable error logging by setting `Error.log` to true.
* This will log all errors to the configured log handlers.
*
* #### Controlling what errors are logged/displayed
*
* You can control which errors are logged / displayed by ErrorHandler by setting `Error.level`. Setting this
* to one or a combination of a few of the E_* constants will only enable the specified errors.
*
* e.g. `Configure::write('Error.level', E_ALL & ~E_NOTICE);`
*
* Would enable handling for all non Notice errors.
*
* @package Cake.Error
* @see ExceptionRenderer for more information on how to customize exception rendering.
*/
class ErrorHandler {
/**
* Set as the default exception handler by the CakePHP bootstrap process.
*
* This will either use custom exception renderer class if configured,
* or use the default ExceptionRenderer.
*
* @param Exception $exception
* @return void
* @see http://php.net/manual/en/function.set-exception-handler.php
*/
public static function handleException(Exception $exception) {
$config = Configure::read('Exception');
self::_log($exception, $config);
$renderer = $config['renderer'];
if ($renderer !== 'ExceptionRenderer') {
list($plugin, $renderer) = pluginSplit($renderer, true);
App::uses($renderer, $plugin . 'Error');
}
try {
$error = new $renderer($exception);
$error->render();
} catch (Exception $e) {
set_error_handler(Configure::read('Error.handler')); // Should be using configured ErrorHandler
Configure::write('Error.trace', false); // trace is useless here since it's internal
$message = sprintf("[%s] %s\n%s", // Keeping same message format
get_class($e),
$e->getMessage(),
$e->getTraceAsString()
);
trigger_error($message, E_USER_ERROR);
}
}
/**
* Generates a formatted error message
* @param Exception $exception Exception instance
* @return string Formatted message
*/
protected static function _getMessage($exception) {
$message = sprintf("[%s] %s",
get_class($exception),
$exception->getMessage()
);
if (method_exists($exception, 'getAttributes')) {
$attributes = $exception->getAttributes();
if ($attributes) {
$message .= "\nException Attributes: " . var_export($exception->getAttributes(), true);
}
}
if (php_sapi_name() !== 'cli') {
$request = Router::getRequest();
if ($request) {
$message .= "\nRequest URL: " . $request->here();
}
}
$message .= "\nStack Trace:\n" . $exception->getTraceAsString();
return $message;
}
/**
* Handles exception logging
*
* @param Exception $exception
* @param array $config
* @return boolean
*/
protected static function _log(Exception $exception, $config) {
if (empty($config['log'])) {
return false;
}
if (!empty($config['skipLog'])) {
foreach ((array)$config['skipLog'] as $class) {
if ($exception instanceof $class) {
return false;
}
}
}
return CakeLog::write(LOG_ERR, self::_getMessage($exception));
}
/**
* Set as the default error handler by CakePHP. Use Configure::write('Error.handler', $callback), to use your own
* error handling methods. This function will use Debugger to display errors when debug > 0. And
* will log errors to CakeLog, when debug == 0.
*
* You can use Configure::write('Error.level', $value); to set what type of errors will be handled here.
* Stack traces for errors can be enabled with Configure::write('Error.trace', true);
*
* @param integer $code Code of error
* @param string $description Error description
* @param string $file File on which error occurred
* @param integer $line Line that triggered the error
* @param array $context Context
* @return boolean true if error was handled
*/
public static function handleError($code, $description, $file = null, $line = null, $context = null) {
if (error_reporting() === 0) {
return false;
}
$errorConfig = Configure::read('Error');
list($error, $log) = self::mapErrorCode($code);
if ($log === LOG_ERR) {
return self::handleFatalError($code, $description, $file, $line);
}
$debug = Configure::read('debug');
if ($debug) {
$data = array(
'level' => $log,
'code' => $code,
'error' => $error,
'description' => $description,
'file' => $file,
'line' => $line,
'context' => $context,
'start' => 2,
'path' => Debugger::trimPath($file)
);
return Debugger::getInstance()->outputError($data);
} else {
$message = $error . ' (' . $code . '): ' . $description . ' in [' . $file . ', line ' . $line . ']';
if (!empty($errorConfig['trace'])) {
$trace = Debugger::trace(array('start' => 1, 'format' => 'log'));
$message .= "\nTrace:\n" . $trace . "\n";
}
return CakeLog::write($log, $message);
}
}
/**
* Generate an error page when some fatal error happens.
*
* @param integer $code Code of error
* @param string $description Error description
* @param string $file File on which error occurred
* @param integer $line Line that triggered the error
* @return boolean
*/
public static function handleFatalError($code, $description, $file, $line) {
$logMessage = 'Fatal Error (' . $code . '): ' . $description . ' in [' . $file . ', line ' . $line . ']';
CakeLog::write(LOG_ERR, $logMessage);
$exceptionHandler = Configure::read('Exception.handler');
if (!is_callable($exceptionHandler)) {
return false;
}
if (ob_get_level()) {
ob_end_clean();
}
if (Configure::read('debug')) {
call_user_func($exceptionHandler, new FatalErrorException($description, 500, $file, $line));
} else {
call_user_func($exceptionHandler, new InternalErrorException());
}
return false;
}
/**
* Map an error code into an Error word, and log location.
*
* @param integer $code Error code to map
* @return array Array of error word, and log location.
*/
public static function mapErrorCode($code) {
$error = $log = null;
switch ($code) {
case E_PARSE:
case E_ERROR:
case E_CORE_ERROR:
case E_COMPILE_ERROR:
case E_USER_ERROR:
$error = 'Fatal Error';
$log = LOG_ERR;
break;
case E_WARNING:
case E_USER_WARNING:
case E_COMPILE_WARNING:
case E_RECOVERABLE_ERROR:
$error = 'Warning';
$log = LOG_WARNING;
break;
case E_NOTICE:
case E_USER_NOTICE:
$error = 'Notice';
$log = LOG_NOTICE;
break;
case E_STRICT:
$error = 'Strict';
$log = LOG_NOTICE;
break;
case E_DEPRECATED:
case E_USER_DEPRECATED:
$error = 'Deprecated';
$log = LOG_NOTICE;
break;
}
return array($error, $log);
}
}