579 lines
16 KiB
PHP
579 lines
16 KiB
PHP
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<?php
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/**
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* This file contains the error handler application component.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright 2008-2013 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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Yii::import('CHtml',true);
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/**
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* CErrorHandler handles uncaught PHP errors and exceptions.
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*
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* It displays these errors using appropriate views based on the
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* nature of the error and the mode the application runs at.
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* It also chooses the most preferred language for displaying the error.
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*
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* CErrorHandler uses two sets of views:
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* <ul>
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* <li>development views, named as <code>exception.php</code>;
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* <li>production views, named as <code>error<StatusCode>.php</code>;
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* </ul>
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* where <StatusCode> stands for the HTTP error code (e.g. error500.php).
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* Localized views are named similarly but located under a subdirectory
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* whose name is the language code (e.g. zh_cn/error500.php).
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*
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* Development views are displayed when the application is in debug mode
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* (i.e. YII_DEBUG is defined as true). Detailed error information with source code
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* are displayed in these views. Production views are meant to be shown
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* to end-users and are used when the application is in production mode.
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* For security reasons, they only display the error message without any
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* sensitive information.
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*
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* CErrorHandler looks for the view templates from the following locations in order:
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* <ol>
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* <li><code>themes/ThemeName/views/system</code>: when a theme is active.</li>
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* <li><code>protected/views/system</code></li>
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* <li><code>framework/views</code></li>
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* </ol>
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* If the view is not found in a directory, it will be looked for in the next directory.
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*
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* The property {@link maxSourceLines} can be changed to specify the number
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* of source code lines to be displayed in development views.
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*
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* CErrorHandler is a core application component that can be accessed via
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* {@link CApplication::getErrorHandler()}.
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*
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* @property array $error The error details. Null if there is no error.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @package system.base
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* @since 1.0
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*/
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class CErrorHandler extends CApplicationComponent
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{
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/**
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* @var integer maximum number of source code lines to be displayed. Defaults to 25.
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*/
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public $maxSourceLines=25;
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/**
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* @var integer maximum number of trace source code lines to be displayed. Defaults to 10.
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* @since 1.1.6
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*/
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public $maxTraceSourceLines = 10;
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/**
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* @var string the application administrator information (could be a name or email link). It is displayed in error pages to end users. Defaults to 'the webmaster'.
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*/
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public $adminInfo='the webmaster';
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/**
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* @var boolean whether to discard any existing page output before error display. Defaults to true.
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*/
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public $discardOutput=true;
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/**
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* @var string the route (eg 'site/error') to the controller action that will be used to display external errors.
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* Inside the action, it can retrieve the error information by Yii::app()->errorHandler->error.
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* This property defaults to null, meaning CErrorHandler will handle the error display.
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*/
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public $errorAction;
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private $_error;
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/**
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* Handles the exception/error event.
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* This method is invoked by the application whenever it captures
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* an exception or PHP error.
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* @param CEvent $event the event containing the exception/error information
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*/
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public function handle($event)
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{
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// set event as handled to prevent it from being handled by other event handlers
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$event->handled=true;
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if($this->discardOutput)
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{
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$gzHandler=false;
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foreach(ob_list_handlers() as $h)
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{
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if(strpos($h,'gzhandler')!==false)
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$gzHandler=true;
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}
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// the following manual level counting is to deal with zlib.output_compression set to On
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// for an output buffer created by zlib.output_compression set to On ob_end_clean will fail
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for($level=ob_get_level();$level>0;--$level)
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{
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if(!@ob_end_clean())
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ob_clean();
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}
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// reset headers in case there was an ob_start("ob_gzhandler") before
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if($gzHandler && !headers_sent() && ob_list_handlers()===array())
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{
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if(function_exists('header_remove')) // php >= 5.3
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{
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header_remove('Vary');
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header_remove('Content-Encoding');
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}
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else
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{
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header('Vary:');
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header('Content-Encoding:');
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}
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}
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}
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if($event instanceof CExceptionEvent)
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$this->handleException($event->exception);
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else // CErrorEvent
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$this->handleError($event);
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}
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/**
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* Returns the details about the error that is currently being handled.
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* The error is returned in terms of an array, with the following information:
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* <ul>
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* <li>code - the HTTP status code (e.g. 403, 500)</li>
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* <li>type - the error type (e.g. 'CHttpException', 'PHP Error')</li>
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* <li>message - the error message</li>
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* <li>file - the name of the PHP script file where the error occurs</li>
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* <li>line - the line number of the code where the error occurs</li>
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* <li>trace - the call stack of the error</li>
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* <li>source - the context source code where the error occurs</li>
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* </ul>
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* @return array the error details. Null if there is no error.
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*/
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public function getError()
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{
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return $this->_error;
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}
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/**
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* Handles the exception.
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* @param Exception $exception the exception captured
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*/
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protected function handleException($exception)
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{
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$app=Yii::app();
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if($app instanceof CWebApplication)
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{
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if(($trace=$this->getExactTrace($exception))===null)
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{
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$fileName=$exception->getFile();
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$errorLine=$exception->getLine();
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}
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else
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{
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$fileName=$trace['file'];
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$errorLine=$trace['line'];
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}
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$trace = $exception->getTrace();
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foreach($trace as $i=>$t)
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{
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if(!isset($t['file']))
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$trace[$i]['file']='unknown';
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if(!isset($t['line']))
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$trace[$i]['line']=0;
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if(!isset($t['function']))
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$trace[$i]['function']='unknown';
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unset($trace[$i]['object']);
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}
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$this->_error=$data=array(
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'code'=>($exception instanceof CHttpException)?$exception->statusCode:500,
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'type'=>get_class($exception),
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'errorCode'=>$exception->getCode(),
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'message'=>$exception->getMessage(),
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'file'=>$fileName,
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'line'=>$errorLine,
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'trace'=>$exception->getTraceAsString(),
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'traces'=>$trace,
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);
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if(!headers_sent())
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header("HTTP/1.0 {$data['code']} ".$this->getHttpHeader($data['code'], get_class($exception)));
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if($exception instanceof CHttpException || !YII_DEBUG)
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$this->render('error',$data);
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else
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{
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if($this->isAjaxRequest())
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$app->displayException($exception);
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else
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$this->render('exception',$data);
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}
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}
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else
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$app->displayException($exception);
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}
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/**
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* Handles the PHP error.
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* @param CErrorEvent $event the PHP error event
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*/
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protected function handleError($event)
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{
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$trace=debug_backtrace();
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// skip the first 3 stacks as they do not tell the error position
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if(count($trace)>3)
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$trace=array_slice($trace,3);
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$traceString='';
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foreach($trace as $i=>$t)
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{
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if(!isset($t['file']))
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$trace[$i]['file']='unknown';
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if(!isset($t['line']))
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$trace[$i]['line']=0;
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if(!isset($t['function']))
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$trace[$i]['function']='unknown';
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$traceString.="#$i {$trace[$i]['file']}({$trace[$i]['line']}): ";
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if(isset($t['object']) && is_object($t['object']))
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$traceString.=get_class($t['object']).'->';
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$traceString.="{$trace[$i]['function']}()\n";
|
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|
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unset($trace[$i]['object']);
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|
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}
|
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|
|
|
|||
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$app=Yii::app();
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|
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if($app instanceof CWebApplication)
|
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|
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{
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|
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switch($event->code)
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{
|
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case E_WARNING:
|
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|
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$type = 'PHP warning';
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break;
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case E_NOTICE:
|
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$type = 'PHP notice';
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break;
|
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case E_USER_ERROR:
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$type = 'User error';
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break;
|
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case E_USER_WARNING:
|
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$type = 'User warning';
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break;
|
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|
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case E_USER_NOTICE:
|
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|
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$type = 'User notice';
|
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|
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break;
|
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|
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case E_RECOVERABLE_ERROR:
|
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|
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$type = 'Recoverable error';
|
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|
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break;
|
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|
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default:
|
|||
|
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$type = 'PHP error';
|
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|
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}
|
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|
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$this->_error=$data=array(
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'code'=>500,
|
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'type'=>$type,
|
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|
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'message'=>$event->message,
|
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|
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'file'=>$event->file,
|
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|
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'line'=>$event->line,
|
|||
|
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'trace'=>$traceString,
|
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|
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'traces'=>$trace,
|
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|
|
);
|
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|
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if(!headers_sent())
|
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|
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header("HTTP/1.0 500 Internal Server Error");
|
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|
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if($this->isAjaxRequest())
|
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|
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$app->displayError($event->code,$event->message,$event->file,$event->line);
|
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|
|
elseif(YII_DEBUG)
|
|||
|
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$this->render('exception',$data);
|
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|
|
else
|
|||
|
|
$this->render('error',$data);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
$app->displayError($event->code,$event->message,$event->file,$event->line);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* whether the current request is an AJAX (XMLHttpRequest) request.
|
|||
|
|
* @return boolean whether the current request is an AJAX request.
|
|||
|
|
*/
|
|||
|
|
protected function isAjaxRequest()
|
|||
|
|
{
|
|||
|
|
return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH']==='XMLHttpRequest';
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Returns the exact trace where the problem occurs.
|
|||
|
|
* @param Exception $exception the uncaught exception
|
|||
|
|
* @return array the exact trace where the problem occurs
|
|||
|
|
*/
|
|||
|
|
protected function getExactTrace($exception)
|
|||
|
|
{
|
|||
|
|
$traces=$exception->getTrace();
|
|||
|
|
|
|||
|
|
foreach($traces as $trace)
|
|||
|
|
{
|
|||
|
|
// property access exception
|
|||
|
|
if(isset($trace['function']) && ($trace['function']==='__get' || $trace['function']==='__set'))
|
|||
|
|
return $trace;
|
|||
|
|
}
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Renders the view.
|
|||
|
|
* @param string $view the view name (file name without extension).
|
|||
|
|
* See {@link getViewFile} for how a view file is located given its name.
|
|||
|
|
* @param array $data data to be passed to the view
|
|||
|
|
*/
|
|||
|
|
protected function render($view,$data)
|
|||
|
|
{
|
|||
|
|
if($view==='error' && $this->errorAction!==null)
|
|||
|
|
Yii::app()->runController($this->errorAction);
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
// additional information to be passed to view
|
|||
|
|
$data['version']=$this->getVersionInfo();
|
|||
|
|
$data['time']=time();
|
|||
|
|
$data['admin']=$this->adminInfo;
|
|||
|
|
include($this->getViewFile($view,$data['code']));
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Determines which view file should be used.
|
|||
|
|
* @param string $view view name (either 'exception' or 'error')
|
|||
|
|
* @param integer $code HTTP status code
|
|||
|
|
* @return string view file path
|
|||
|
|
*/
|
|||
|
|
protected function getViewFile($view,$code)
|
|||
|
|
{
|
|||
|
|
$viewPaths=array(
|
|||
|
|
Yii::app()->getTheme()===null ? null : Yii::app()->getTheme()->getSystemViewPath(),
|
|||
|
|
Yii::app() instanceof CWebApplication ? Yii::app()->getSystemViewPath() : null,
|
|||
|
|
YII_PATH.DIRECTORY_SEPARATOR.'views',
|
|||
|
|
);
|
|||
|
|
|
|||
|
|
foreach($viewPaths as $i=>$viewPath)
|
|||
|
|
{
|
|||
|
|
if($viewPath!==null)
|
|||
|
|
{
|
|||
|
|
$viewFile=$this->getViewFileInternal($viewPath,$view,$code,$i===2?'en_us':null);
|
|||
|
|
if(is_file($viewFile))
|
|||
|
|
return $viewFile;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Looks for the view under the specified directory.
|
|||
|
|
* @param string $viewPath the directory containing the views
|
|||
|
|
* @param string $view view name (either 'exception' or 'error')
|
|||
|
|
* @param integer $code HTTP status code
|
|||
|
|
* @param string $srcLanguage the language that the view file is in
|
|||
|
|
* @return string view file path
|
|||
|
|
*/
|
|||
|
|
protected function getViewFileInternal($viewPath,$view,$code,$srcLanguage=null)
|
|||
|
|
{
|
|||
|
|
$app=Yii::app();
|
|||
|
|
if($view==='error')
|
|||
|
|
{
|
|||
|
|
$viewFile=$app->findLocalizedFile($viewPath.DIRECTORY_SEPARATOR."error{$code}.php",$srcLanguage);
|
|||
|
|
if(!is_file($viewFile))
|
|||
|
|
$viewFile=$app->findLocalizedFile($viewPath.DIRECTORY_SEPARATOR.'error.php',$srcLanguage);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
$viewFile=$viewPath.DIRECTORY_SEPARATOR."exception.php";
|
|||
|
|
return $viewFile;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Returns server version information.
|
|||
|
|
* If the application is in production mode, empty string is returned.
|
|||
|
|
* @return string server version information. Empty if in production mode.
|
|||
|
|
*/
|
|||
|
|
protected function getVersionInfo()
|
|||
|
|
{
|
|||
|
|
if(YII_DEBUG)
|
|||
|
|
{
|
|||
|
|
$version='<a href="http://www.yiiframework.com/">Yii Framework</a>/'.Yii::getVersion();
|
|||
|
|
if(isset($_SERVER['SERVER_SOFTWARE']))
|
|||
|
|
$version=$_SERVER['SERVER_SOFTWARE'].' '.$version;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
$version='';
|
|||
|
|
return $version;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Converts arguments array to its string representation
|
|||
|
|
*
|
|||
|
|
* @param array $args arguments array to be converted
|
|||
|
|
* @return string string representation of the arguments array
|
|||
|
|
*/
|
|||
|
|
protected function argumentsToString($args)
|
|||
|
|
{
|
|||
|
|
$count=0;
|
|||
|
|
|
|||
|
|
$isAssoc=$args!==array_values($args);
|
|||
|
|
|
|||
|
|
foreach($args as $key => $value)
|
|||
|
|
{
|
|||
|
|
$count++;
|
|||
|
|
if($count>=5)
|
|||
|
|
{
|
|||
|
|
if($count>5)
|
|||
|
|
unset($args[$key]);
|
|||
|
|
else
|
|||
|
|
$args[$key]='...';
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if(is_object($value))
|
|||
|
|
$args[$key] = get_class($value);
|
|||
|
|
elseif(is_bool($value))
|
|||
|
|
$args[$key] = $value ? 'true' : 'false';
|
|||
|
|
elseif(is_string($value))
|
|||
|
|
{
|
|||
|
|
if(strlen($value)>64)
|
|||
|
|
$args[$key] = '"'.substr($value,0,64).'..."';
|
|||
|
|
else
|
|||
|
|
$args[$key] = '"'.$value.'"';
|
|||
|
|
}
|
|||
|
|
elseif(is_array($value))
|
|||
|
|
$args[$key] = 'array('.$this->argumentsToString($value).')';
|
|||
|
|
elseif($value===null)
|
|||
|
|
$args[$key] = 'null';
|
|||
|
|
elseif(is_resource($value))
|
|||
|
|
$args[$key] = 'resource';
|
|||
|
|
|
|||
|
|
if(is_string($key))
|
|||
|
|
{
|
|||
|
|
$args[$key] = '"'.$key.'" => '.$args[$key];
|
|||
|
|
}
|
|||
|
|
elseif($isAssoc)
|
|||
|
|
{
|
|||
|
|
$args[$key] = $key.' => '.$args[$key];
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
$out = implode(", ", $args);
|
|||
|
|
|
|||
|
|
return $out;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Returns a value indicating whether the call stack is from application code.
|
|||
|
|
* @param array $trace the trace data
|
|||
|
|
* @return boolean whether the call stack is from application code.
|
|||
|
|
*/
|
|||
|
|
protected function isCoreCode($trace)
|
|||
|
|
{
|
|||
|
|
if(isset($trace['file']))
|
|||
|
|
{
|
|||
|
|
$systemPath=realpath(dirname(__FILE__).'/..');
|
|||
|
|
return $trace['file']==='unknown' || strpos(realpath($trace['file']),$systemPath.DIRECTORY_SEPARATOR)===0;
|
|||
|
|
}
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Renders the source code around the error line.
|
|||
|
|
* @param string $file source file path
|
|||
|
|
* @param integer $errorLine the error line number
|
|||
|
|
* @param integer $maxLines maximum number of lines to display
|
|||
|
|
* @return string the rendering result
|
|||
|
|
*/
|
|||
|
|
protected function renderSourceCode($file,$errorLine,$maxLines)
|
|||
|
|
{
|
|||
|
|
$errorLine--; // adjust line number to 0-based from 1-based
|
|||
|
|
if($errorLine<0 || ($lines=@file($file))===false || ($lineCount=count($lines))<=$errorLine)
|
|||
|
|
return '';
|
|||
|
|
|
|||
|
|
$halfLines=(int)($maxLines/2);
|
|||
|
|
$beginLine=$errorLine-$halfLines>0 ? $errorLine-$halfLines:0;
|
|||
|
|
$endLine=$errorLine+$halfLines<$lineCount?$errorLine+$halfLines:$lineCount-1;
|
|||
|
|
$lineNumberWidth=strlen($endLine+1);
|
|||
|
|
|
|||
|
|
$output='';
|
|||
|
|
for($i=$beginLine;$i<=$endLine;++$i)
|
|||
|
|
{
|
|||
|
|
$isErrorLine = $i===$errorLine;
|
|||
|
|
$code=sprintf("<span class=\"ln".($isErrorLine?' error-ln':'')."\">%0{$lineNumberWidth}d</span> %s",$i+1,CHtml::encode(str_replace("\t",' ',$lines[$i])));
|
|||
|
|
if(!$isErrorLine)
|
|||
|
|
$output.=$code;
|
|||
|
|
else
|
|||
|
|
$output.='<span class="error">'.$code.'</span>';
|
|||
|
|
}
|
|||
|
|
return '<div class="code"><pre>'.$output.'</pre></div>';
|
|||
|
|
}
|
|||
|
|
/**
|
|||
|
|
* Return correct message for each known http error code
|
|||
|
|
* @param integer $httpCode error code to map
|
|||
|
|
* @param string $replacement replacement error string that is returned if code is unknown
|
|||
|
|
* @return string the textual representation of the given error code or the replacement string if the error code is unknown
|
|||
|
|
*/
|
|||
|
|
protected function getHttpHeader($httpCode, $replacement='')
|
|||
|
|
{
|
|||
|
|
$httpCodes = array(
|
|||
|
|
100 => 'Continue',
|
|||
|
|
101 => 'Switching Protocols',
|
|||
|
|
102 => 'Processing',
|
|||
|
|
118 => 'Connection timed out',
|
|||
|
|
200 => 'OK',
|
|||
|
|
201 => 'Created',
|
|||
|
|
202 => 'Accepted',
|
|||
|
|
203 => 'Non-Authoritative',
|
|||
|
|
204 => 'No Content',
|
|||
|
|
205 => 'Reset Content',
|
|||
|
|
206 => 'Partial Content',
|
|||
|
|
207 => 'Multi-Status',
|
|||
|
|
210 => 'Content Different',
|
|||
|
|
300 => 'Multiple Choices',
|
|||
|
|
301 => 'Moved Permanently',
|
|||
|
|
302 => 'Found',
|
|||
|
|
303 => 'See Other',
|
|||
|
|
304 => 'Not Modified',
|
|||
|
|
305 => 'Use Proxy',
|
|||
|
|
307 => 'Temporary Redirect',
|
|||
|
|
310 => 'Too many Redirect',
|
|||
|
|
400 => 'Bad Request',
|
|||
|
|
401 => 'Unauthorized',
|
|||
|
|
402 => 'Payment Required',
|
|||
|
|
403 => 'Forbidden',
|
|||
|
|
404 => 'Not Found',
|
|||
|
|
405 => 'Method Not Allowed',
|
|||
|
|
406 => 'Not Acceptable',
|
|||
|
|
407 => 'Proxy Authentication Required',
|
|||
|
|
408 => 'Request Time-out',
|
|||
|
|
409 => 'Conflict',
|
|||
|
|
410 => 'Gone',
|
|||
|
|
411 => 'Length Required',
|
|||
|
|
412 => 'Precondition Failed',
|
|||
|
|
413 => 'Request Entity Too Large',
|
|||
|
|
414 => 'Request-URI Too Long',
|
|||
|
|
415 => 'Unsupported Media Type',
|
|||
|
|
416 => 'Requested range unsatisfiable',
|
|||
|
|
417 => 'Expectation failed',
|
|||
|
|
418 => 'I’m a teapot',
|
|||
|
|
422 => 'Unprocessable entity',
|
|||
|
|
423 => 'Locked',
|
|||
|
|
424 => 'Method failure',
|
|||
|
|
425 => 'Unordered Collection',
|
|||
|
|
426 => 'Upgrade Required',
|
|||
|
|
449 => 'Retry With',
|
|||
|
|
450 => 'Blocked by Windows Parental Controls',
|
|||
|
|
500 => 'Internal Server Error',
|
|||
|
|
501 => 'Not Implemented',
|
|||
|
|
502 => 'Bad Gateway ou Proxy Error',
|
|||
|
|
503 => 'Service Unavailable',
|
|||
|
|
504 => 'Gateway Time-out',
|
|||
|
|
505 => 'HTTP Version not supported',
|
|||
|
|
507 => 'Insufficient storage',
|
|||
|
|
509 => 'Bandwidth Limit Exceeded',
|
|||
|
|
);
|
|||
|
|
if(isset($httpCodes[$httpCode]))
|
|||
|
|
return $httpCodes[$httpCode];
|
|||
|
|
else
|
|||
|
|
return $replacement;
|
|||
|
|
}
|
|||
|
|
}
|