@ -1,23 +1,22 @@
<?php
/**
* This file contains the error handler application component .
* ErrorHandler class file .
*
* @author Qiang Xue < qiang.xue @ gmail . com >
* @link http://www.yiiframework.com/
* @copyright Copyright © 2008-2011 Yii Software LLC
* @copyright Copyright © 2008-2012 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
Yii::import('CHtml',true) ;
namespace yii\base ;
/**
* C ErrorHandler handles uncaught PHP errors and exceptions.
* ErrorHandler handles uncaught PHP errors and exceptions.
*
* It displays these errors using appropriate views based on the
* nature of the error and the mode the application runs at.
* It also chooses the most preferred language for displaying the error.
*
* C ErrorHandler uses two sets of views:
* ErrorHandler uses two sets of views:
* < ul >
* < li > development views, named as < code > exception.php< / code > ;
* < li > production views, named as < code > error< StatusCode> .php< / code > ;
@ -33,7 +32,7 @@ Yii::import('CHtml',true);
* For security reasons, they only display the error message without any
* sensitive information.
*
* C ErrorHandler looks for the view templates from the following locations in order:
* ErrorHandler looks for the view templates from the following locations in order:
* < ol >
* < li > < code > themes/ThemeName/views/system< / code > : when a theme is active.< / li >
* < li > < code > protected/views/system< / code > < / li >
@ -44,153 +43,170 @@ Yii::import('CHtml',true);
* The property {@link maxSourceLines} can be changed to specify the number
* of source code lines to be displayed in development views.
*
* C ErrorHandler is a core application component that can be accessed via
* ErrorHandler is a core application component that can be accessed via
* {@link CApplication::getErrorHandler()}.
*
* @property array $error The error details. Null if there is no error.
*
* @author Qiang Xue < qiang.xue @ gmail . com >
* @version $Id$
* @package system.base
* @since 1.0
* @since 2.0
*/
class C ErrorHandler extends C ApplicationComponent
class ErrorHandler extends ApplicationComponent
{
/**
* @var integer maximum number of source code lines to be displayed. Defaults to 25.
*/
public $maxSourceLines=25;
public $maxSourceLines = 25;
/**
* @var integer maximum number of trace source code lines to be displayed. Defaults to 10.
* @since 1.1.6
*/
public $maxTraceSourceLines = 10;
/**
* @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'.
*/
public $adminInfo='the webmaster';
public $adminInfo = 'the webmaster';
/**
* @var boolean whether to discard any existing page output before error display. Defaults to true.
*/
public $discardOutput=true;
public $discardExisting Output = true;
/**
* @var string the route (eg 'site/error') to the controller action that will be used to display external errors.
* Inside the action, it can retrieve the error information by Yii::app()->errorHandler->error.
* This property defaults to null, meaning C ErrorHandler will handle the error display.
* This property defaults to null, meaning ErrorHandler will handle the error display.
*/
public $errorAction;
private $_error;
public $exception;
public $compactOutput;
/**
* Handles the exception/error event.
* This method is invoked by the application whenever it captures
* an exception or PHP error.
* @param CEvent $event the event containing the exception/error information
*/
public function handle($event)
public function init()
{
// set event as handled to prevent it from being handled by other event handlers
$event->handled=true;
set_exception_handler(array($this, 'handleException'));
set_error_handler(array($this, 'handleError'), error_reporting());
}
if($this->discardOutput )
protected function logException($exception)
{
// the following manual level counting is to deal with zlib.output_compression set to On
for($level=ob_get_level();$level>0;--$level)
{
@ob_end_clean();
$category = get_class($exception);
if ($exception instanceof HttpException) {
$category .= '\\' . $exception->statusCode;
} elseif ($exception instanceof \ErrorException) {
$category .= '\\' . $exception->getSeverity();
}
\Yii::error((string)$exception, $category);
}
if($event instanceof CExceptionEvent)
$this->handleException($event->exception);
else // CErrorEvent
$this->handleError($event);
protected function clearOutput()
{
// the following manual level counting is to deal with zlib.output_compression set to On
for ($level = ob_get_level(); $level > 0; --$level) {
@ob_end_clean();
}
}
/**
* Returns the details about the error that is currently being handled.
* The error is returned in terms of an array, with the following information:
* < ul >
* < li > code - the HTTP status code (e.g. 403, 500)< / li >
* < li > type - the error type (e.g. 'CHttpException', 'PHP Error')< / li >
* < li > message - the error message< / li >
* < li > file - the name of the PHP script file where the error occurs< / li >
* < li > line - the line number of the code where the error occurs< / li >
* < li > trace - the call stack of the error< / li >
* < li > source - the context source code where the error occurs< / li >
* < / ul >
* @return array the error details. Null if there is no error.
*/
public function getError()
protected function simple()
{
return $this->_error;
if (YII_DEBUG) {
echo '< h1 > ' . get_class($exception) . "< / h1 > \n";
echo '< p > ' . $exception->getMessage() . ' (' . $exception->getFile() . ':' . $exception->getLine() . ')< / p > ';
echo '< pre > ' . $exception->getTraceAsString() . '< / pre > ';
} else
{
echo '< h1 > ' . get_class($exception) . "< / h1 > \n";
echo '< p > ' . $exception->getMessage() . '< / p > ';
}
}
/**
* Handles the exception.
* @param Exception $exception the exception captured
* @param \Exception $exception
*/
protected function handleException($exception)
{
$app=Yii::app();
if($app instanceof CWebApplication)
{
if(($trace=$this->getExactTrace($exception))===null)
public function handleException($exception)
{
$fileName=$exception->getFile();
$errorLine=$exception->getLine();
}
else
{
$fileName=$trace['file'];
$errorLine=$trace['line'];
}
$this->exception = $exception;
$trace = $exception->getTrace();
// disable error capturing to avoid recursive errors
restore_error_handler();
restore_exception_handler();
foreach($trace as $i=>$t)
{
if(!isset($t['file']))
$trace[$i]['file']='unknown';
$this->logException($exception);
if ($this->discardExistingOutput) {
$this->clearOutput();
}
if ($this->compactOutput === null) {
// not in Web application, or not in AJAX request
$this->compactOutput = !(\Yii::$application instanceof \yii\web\Application) || isset($_SERVER['HTTP_X_REQUESTED_WITH']) & & $_SERVER['HTTP_X_REQUESTED_WITH']==='XMLHttpRequest';
}
if(!isset($t['line']))
$trace[$i]['line']=0;
if ($this->compactOutput) {
$this->simple();
return;
}
if(!isset($t['function']))
$trace[$i]['function']='unknown';
if (($trace = $this->getExactTrace($exception)) === null) {
$fileName = $exception->getFile();
$errorLine = $exception->getLine();
} else {
$fileName = $trace['file'];
$errorLine = $trace['line'];
}
$trace = $exception->getTrace();
foreach ($trace as $i => $t) {
if (!isset($t['file'])) {
$trace[$i]['file'] = 'unknown';
}
if (!isset($t['line'])) {
$trace[$i]['line'] = 0;
}
if (!isset($t['function'])) {
$trace[$i]['function'] = 'unknown';
}
unset($trace[$i]['object']);
}
$this->_error=$data=array(
'code'=>($exception instanceof CHttpException)?$exception->statusCode:500,
'type'=>get_class($exception),
'errorCode'=>$exception->getCode(),
'message'=>$exception->getMessage(),
'file'=>$fileName,
'line'=>$errorLine,
'trace'=>$exception->getTraceAsString(),
'traces'=>$trace,
$this->_error = $data = array(
'code' => $exception instanceof HttpException ? $exception->statusCode : 500,
'type' => get_class($exception),
'errorCode' => $exception->getCode(),
'message' => $exception->getMessage(),
'file' => $fileName,
'line' => $errorLine,
'trace' => $exception->getTraceAsString(),
'traces' => $trace,
);
if(!headers_sent())
header("HTTP/1.0 {$data['code']} ".get_class($exception));
if (!headers_sent()) {
header("HTTP/1.0 {$data['code']} " . get_class($exception));
}
if($exception instanceof CHttpException || !YII_DEBUG)
$this->render('error',$data);
else
{
if($this->isAjaxRequest())
$app->displayException($exception);
else
$this->render('exception',$data);
if ($exception instanceof HttpException || !YII_DEBUG) {
$this->render('error', $data);
} else {
$this->render('exception', $data);
}
}
else
$app->displayException($exception);
/**
* Returns the details about the error that is currently being handled.
* The error is returned in terms of an array, with the following information:
* < ul >
* < li > code - the HTTP status code (e.g. 403, 500)< / li >
* < li > type - the error type (e.g. 'CHttpException', 'PHP Error')< / li >
* < li > message - the error message< / li >
* < li > file - the name of the PHP script file where the error occurs< / li >
* < li > line - the line number of the code where the error occurs< / li >
* < li > trace - the call stack of the error< / li >
* < li > source - the context source code where the error occurs< / li >
* < / ul >
* @return array the error details. Null if there is no error.
*/
public function getError()
{
return $this->_error;
}
/**
@ -199,34 +215,33 @@ class CErrorHandler extends CApplicationComponent
*/
protected function handleError($event)
{
$trace=debug_backtrace();
$trace = debug_backtrace();
// skip the first 3 stacks as they do not tell the error position
if(count($trace)>3)
$trace=array_slice($trace,3);
$traceString='';
foreach($trace as $i=>$t)
if (count($trace) > 3)
$trace = array_slice($trace, 3);
$traceString = '';
foreach ($trace as $i => $t)
{
if(!isset($t['file']))
$trace[$i]['file']='unknown';
if (!isset($t['file']))
$trace[$i]['file'] = 'unknown';
if(!isset($t['line']))
$trace[$i]['line']=0;
if (!isset($t['line']))
$trace[$i]['line'] = 0;
if(!isset($t['function']))
$trace[$i]['function']='unknown';
if (!isset($t['function']))
$trace[$i]['function'] = 'unknown';
$traceString.="#$i {$trace[$i]['file']}({$trace[$i]['line']}): ";
if(isset($t['object']) & & is_object($t['object']))
$traceString.=get_class($t['object']).'->';
$traceString.="{$trace[$i]['function']}()\n";
$traceString .= "#$i {$trace[$i]['file']}({$trace[$i]['line']}): ";
if (isset($t['object']) & & is_object($t['object']))
$traceString .= get_class($t['object']) . '->';
$traceString .= "{$trace[$i]['function']}()\n";
unset($trace[$i]['object']);
}
$app=Yii::app();
if($app instanceof CWebApplication)
{
switch($event->code)
$app = Yii::app();
if ($app instanceof CWebApplication) {
switch ($event->code)
{
case E_WARNING:
$type = 'PHP warning';
@ -249,52 +264,42 @@ class CErrorHandler extends CApplicationComponent
default:
$type = 'PHP error';
}
$this->_error=$data=array(
'code'=>500,
'type'=>$type,
'message'=>$event->message,
'file'=>$event->file,
'line'=>$event->line,
'trace'=>$traceString,
'traces'=>$trace,
$this->_error = $data = array(
'code' => 500,
'type' => $type,
'message' => $event->message,
'file' => $event->file,
'line' => $event->line,
'trace' => $traceString,
'traces' => $trace,
);
if(!headers_sent())
if (!headers_sent())
header("HTTP/1.0 500 PHP Error");
if($this->isAjaxRequest())
$app->displayError($event->code,$event->message,$event->file,$event->line);
else if(YII_DEBUG)
$this->render('exception',$data);
if ($this->isAjaxRequest())
$app->displayError($event->code, $event->message, $event->file, $event->line);
else if (YII_DEBUG)
$this->render('exception', $data);
else
$this->render('error',$data);
$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';
$app->displayError($event->code, $event->message, $event->file, $event->line);
}
/**
* Returns the exact trace where the problem occurs.
* @param Exception $exception the uncaught exception
* @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)
{
$traces = $exception->getTrace();
foreach ($traces as $trace) {
// property access exception
if(isset($trace['function']) & & ($trace['function']==='__get' || $trace['function']==='__set'))
if (isset($trace['function']) & & ($trace['function'] === '__get' || $trace['function'] === '__set')) {
return $trace;
}
}
return null;
}
@ -304,17 +309,17 @@ class CErrorHandler extends CApplicationComponent
* 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,$data)
protected function render($view, $data)
{
if($view==='error' & & $this->errorAction!==null)
if ($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']));
$data['version'] = $this->getVersionInfo();
$data['time'] = time();
$data['admin'] = $this->adminInfo;
include($this->getViewFile($view, $data['code']));
}
}
@ -324,20 +329,19 @@ class CErrorHandler extends CApplicationComponent
* @param integer $code HTTP status code
* @return string view file path
*/
protected function getViewFile($view,$code)
protected function getViewFile($view, $code)
{
$viewPaths=array(
Yii::app()->getTheme()===null ? null : Yii::app()->getTheme()->getSystemViewPath(),
$viewPaths = array(
Yii::app()->getTheme() === null ? null : Yii::app()->getTheme()->getSystemViewPath(),
Yii::app() instanceof CWebApplication ? Yii::app()->getSystemViewPath() : null,
YII_PATH.DIRECTORY_SEPARATOR.'views',
YII_PATH . DIRECTORY_SEPARATOR . 'views',
);
foreach($viewPaths as $i=>$viewPath)
{
if($viewPath!==null)
foreach ($viewPaths as $i => $viewPath)
{
$viewFile=$this->getViewFileInternal($viewPath,$view,$code,$i===2?'en_us':null);
if(is_file($viewFile))
if ($viewPath !== null) {
$viewFile = $this->getViewFileInternal($viewPath, $view, $code, $i === 2 ? 'en_us' : null);
if (is_file($viewFile))
return $viewFile;
}
}
@ -351,17 +355,16 @@ class CErrorHandler extends CApplicationComponent
* @param string $srcLanguage the language that the view file is in
* @return string view file path
*/
protected function getViewFileInternal($viewPath,$view,$code,$srcLanguage=null)
protected function getViewFileInternal($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);
$app = Yii::app();
if ($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";
$viewFile = $viewPath . DIRECTORY_SEPARATOR . "exception.php";
return $viewFile;
}
@ -372,14 +375,14 @@ class CErrorHandler extends CApplicationComponent
*/
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;
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 = '';
}
else
$version='';
return $version;
}
@ -391,47 +394,43 @@ class CErrorHandler extends CApplicationComponent
*/
protected function argumentsToString($args)
{
$count=0;
$count = 0;
$isAssoc=$args!==array_values($args);
$isAssoc = $args !== array_values($args);
foreach($args as $key => $value)
foreach ($args as $key => $value)
{
$count++;
if($count>=5)
{
if($count>5)
if ($count >= 5) {
if ($count > 5)
unset($args[$key]);
else
$args[$key]='...';
$args[$key] = '...';
continue;
}
if(is_object($value))
if (is_object($value))
$args[$key] = get_class($value);
else if(is_bool($value))
else if (is_bool($value))
$args[$key] = $value ? 'true' : 'false';
else if(is_string($value))
{
if(strlen($value)>64)
$args[$key] = '"'.substr($value,0,64).'..."';
else if (is_string($value)) {
if (strlen($value) > 64)
$args[$key] = '"' . substr($value, 0, 64) . '..."';
else
$args[$key] = '"'.$value.'"';
$args[$key] = '"' . $value . '"';
}
else if(is_array($value))
$args[$key] = 'array('.$this->argumentsToString($value).')';
else if($value===null)
else if (is_array($value))
$args[$key] = 'array(' . $this->argumentsToString($value) . ')';
else if ($value === null)
$args[$key] = 'null';
else if(is_resource($value))
else if (is_resource($value))
$args[$key] = 'resource';
if(is_string($key))
{
$args[$key] = '"'.$key.'" => '.$args[$key];
if (is_string($key)) {
$args[$key] = '"' . $key . '" => ' . $args[$key];
}
else if($isAssoc)
{
$args[$key] = $key.' => '.$args[$key];
else if ($isAssoc) {
$args[$key] = $key . ' => ' . $args[$key];
}
}
$out = implode(", ", $args);
@ -446,10 +445,9 @@ class CErrorHandler extends CApplicationComponent
*/
protected function isCoreCode($trace)
{
if(isset($trace['file']))
{
$systemPath=realpath(dirname(__FILE__).'/..');
return $trace['file']==='unknown' || strpos(realpath($trace['file']),$systemPath.DIRECTORY_SEPARATOR)===0;
if (isset($trace['file'])) {
$systemPath = realpath(dirname(__FILE__) . '/..');
return $trace['file'] === 'unknown' || strpos(realpath($trace['file']), $systemPath . DIRECTORY_SEPARATOR) === 0;
}
return false;
}
@ -461,27 +459,49 @@ class CErrorHandler extends CApplicationComponent
* @param integer $maxLines maximum number of lines to display
* @return string the rendering result
*/
protected function renderSourceCode($file,$errorLine,$maxLines)
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))<= $errorLine)
if ($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);
$halfLines = (int)($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)
$output = '';
for ($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;
$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 > ';
$output .= '< span class = "error" > ' . $code . '< / span > ';
}
return '< div class = "code" > < pre > '.$output.'< / pre > < / div > ';
return '< div class = "code" > < pre > ' . $output . '< / pre > < / div > ';
}
/**
* Handles PHP execution errors such as warnings, notices.
*
* This method is implemented as a PHP error handler. It requires
* that constant YII_ENABLE_ERROR_HANDLER be defined true.
*
* This method will first raise an `error` event.
* If the error is not handled by any event handler, it will call
* {@link getErrorHandler errorHandler} to process the error.
*
* The application will be terminated by this method.
*
* @param integer $code the level of the error raised
* @param string $message the error message
* @param string $file the filename that the error was raised in
* @param integer $line the line number the error was raised at
*/
public function handleError($code, $message, $file, $line)
{
throw new \ErrorException($message, 0, $code, $file, $line);
}
}
Qiang Xue
13 years ago