<?php
+/**
+ * @defgroup Exception Exception
+ */
/**
* MediaWiki exception
- * @addtogroup Exception
+ * @ingroup Exception
*/
class MWException extends Exception {
-
/**
* Should the exception use $wgOut to output the error ?
* @return bool
*/
function useOutputPage() {
- return !empty( $GLOBALS['wgFullyInitialised'] ) &&
+ return $this->useMessageCache() &&
+ !empty( $GLOBALS['wgFullyInitialised'] ) &&
( !empty( $GLOBALS['wgArticle'] ) || ( !empty( $GLOBALS['wgOut'] ) && !$GLOBALS['wgOut']->isArticle() ) ) &&
!empty( $GLOBALS['wgTitle'] );
}
*/
function useMessageCache() {
global $wgLang;
+ foreach ( $this->getTrace() as $frame ) {
+ if ( isset( $frame['class'] ) && $frame['class'] === 'LocalisationCache' ) {
+ return false;
+ }
+ }
return is_object( $wgLang );
}
/**
* Run hook to allow extensions to modify the text of the exception
*
- * @param String $name class name of the exception
- * @param Array $args arguments to pass to the callback functions
- * @return mixed string to output or null if any hook has been called
+ * @param $name String: class name of the exception
+ * @param $args Array: arguments to pass to the callback functions
+ * @return Mixed: string to output or null if any hook has been called
*/
function runHooks( $name, $args = array() ) {
global $wgExceptionHooks;
/**
* Get a message from i18n
*
- * @param String $key message name
- * @param String $fallback default message if the message cache can't be
- * called by the exception
+ * @param $key String: message name
+ * @param $fallback String: default message if the message cache can't be
+ * called by the exception
* The function also has other parameters that are arguments for the message
* @return String message with arguments replaced
*/
function getHTML() {
global $wgShowExceptionDetails;
if( $wgShowExceptionDetails ) {
- return '<p>' . htmlspecialchars( $this->getMessage() ) .
+ return '<p>' . nl2br( htmlspecialchars( $this->getMessage() ) ) .
'</p><p>Backtrace:</p><p>' . nl2br( htmlspecialchars( $this->getTraceAsString() ) ) .
"</p>\n";
} else {
* Return the requested URL and point to file and line number from which the
* exception occured
*
- * @return string
+ * @return String
*/
function getLogMessage() {
global $wgRequest;
$file = $this->getFile();
$line = $this->getLine();
$message = $this->getMessage();
- return $wgRequest->getRequestURL() . " Exception from line $line of $file: $message";
+ if ( isset( $wgRequest ) ) {
+ $url = $wgRequest->getRequestURL();
+ if ( !$url ) {
+ $url = '[no URL]';
+ }
+ } else {
+ $url = '[no req]';
+ }
+
+ return "$url Exception from line $line of $file: $message";
}
/** Output the exception report using HTML */
global $wgOut;
if ( $this->useOutputPage() ) {
$wgOut->setPageTitle( $this->getPageTitle() );
- $wgOut->setRobotpolicy( "noindex,nofollow" );
+ $wgOut->setRobotPolicy( "noindex,nofollow" );
$wgOut->setArticleRelated( false );
$wgOut->enableClientCache( false );
$wgOut->redirect( '' );
if( $hookResult = $this->runHooks( get_class( $this ) . "Raw" ) ) {
die( $hookResult );
}
- echo $this->htmlHeader();
- echo $this->getHTML();
- echo $this->htmlFooter();
+ if ( defined( 'MEDIAWIKI_INSTALL' ) || $this->htmlBodyOnly() ) {
+ echo $this->getHTML();
+ } else {
+ echo $this->htmlHeader();
+ echo $this->getHTML();
+ echo $this->htmlFooter();
+ }
}
}
/**
* Output a report about the exception and takes care of formatting.
- * It will be either HTML or plain text based on $wgCommandLineMode.
+ * It will be either HTML or plain text based on isCommandLine().
*/
function report() {
- global $wgCommandLineMode;
- if ( $wgCommandLineMode ) {
- fwrite( STDERR, $this->getText() );
+ $log = $this->getLogMessage();
+ if ( $log ) {
+ wfDebugLog( 'exception', $log );
+ }
+ if ( self::isCommandLine() ) {
+ wfPrintError( $this->getText() );
} else {
- $log = $this->getLogMessage();
- if ( $log ) {
- wfDebugLog( 'exception', $log );
- }
$this->reportHTML();
}
}
header( 'Pragma: nocache' );
}
$title = $this->getPageTitle();
- echo "<html>
+ return "<html>
<head>
<title>$title</title>
</head>
<body>
- <h1><img src='$wgLogo' style='float:left;margin-right:1em' alt=''>$title</h1>
+ <h1><img src='$wgLogo' style='float:left;margin-right:1em' alt=''/>$title</h1>
";
}
* print the end of the html page if not using $wgOut.
*/
function htmlFooter() {
- echo "</body></html>";
+ return "</body></html>";
+ }
+
+ /**
+ * headers handled by subclass?
+ */
+ function htmlBodyOnly() {
+ return false;
+ }
+
+ static function isCommandLine() {
+ return !empty( $GLOBALS['wgCommandLineMode'] ) && !defined( 'MEDIAWIKI_INSTALL' );
}
}
/**
* Exception class which takes an HTML error message, and does not
* produce a backtrace. Replacement for OutputPage::fatalError().
- * @addtogroup Exception
+ * @ingroup Exception
*/
class FatalError extends MWException {
function getHTML() {
}
/**
- * @addtogroup Exception
+ * @ingroup Exception
*/
class ErrorPageError extends MWException {
public $title, $msg;
* Report an exception to the user
*/
function wfReportException( Exception $e ) {
- if ( $e instanceof MWException ) {
- try {
- $e->report();
- } catch ( Exception $e2 ) {
- // Exception occurred from within exception handler
- // Show a simpler error message for the original exception,
- // don't try to invoke report()
- $message = "MediaWiki internal error.\n\n" .
- "Original exception: " . $e->__toString() .
- "\n\nException caught inside exception handler: " .
- $e2->__toString() . "\n";
+ $cmdLine = MWException::isCommandLine();
+ if ( $e instanceof MWException ) {
+ try {
+ $e->report();
+ } catch ( Exception $e2 ) {
+ // Exception occurred from within exception handler
+ // Show a simpler error message for the original exception,
+ // don't try to invoke report()
+ $message = "MediaWiki internal error.\n\n";
+ if ( $GLOBALS['wgShowExceptionDetails'] )
+ $message .= "Original exception: " . $e->__toString();
+ $message .= "\n\nException caught inside exception handler";
+ if ( $GLOBALS['wgShowExceptionDetails'] )
+ $message .= ": " . $e2->__toString();
+ $message .= "\n";
+ if ( $cmdLine ) {
+ wfPrintError( $message );
+ } else {
+ echo nl2br( htmlspecialchars( $message ) ). "\n";
+ }
+ }
+ } else {
+ $message = "Unexpected non-MediaWiki exception encountered, of type \"" . get_class( $e ) . "\"\n" .
+ $e->__toString() . "\n";
+ if ( $GLOBALS['wgShowExceptionDetails'] ) {
+ $message .= "\n" . $e->getTraceAsString() ."\n";
+ }
+ if ( $cmdLine ) {
+ wfPrintError( $message );
+ } else {
+ echo nl2br( htmlspecialchars( $message ) ). "\n";
+ }
+ }
+}
- if ( !empty( $GLOBALS['wgCommandLineMode'] ) ) {
- fwrite( STDERR, $message );
- } else {
- echo nl2br( htmlspecialchars( $message ) ). "\n";
- }
- }
- } else {
- echo $e->__toString();
- }
+/**
+ * Print a message, if possible to STDERR.
+ * Use this in command line mode only (see isCommandLine)
+ */
+function wfPrintError( $message ) {
+ #NOTE: STDERR may not be available, especially if php-cgi is used from the command line (bug #15602).
+ # Try to produce meaningful output anyway. Using echo may corrupt output to STDOUT though.
+ if ( defined( 'STDERR' ) ) {
+ fwrite( STDERR, $message );
+ } else {
+ echo( $message );
+ }
}
/**