useMessageCache() ) { return wfMsgReal( $key, $args ); } else { return wfMsgReplaceArgs( $fallback, $args ); } } /* If wgShowExceptionDetails, return a HTML message with a backtrace to the error. */ function getHTML() { global $wgShowExceptionDetails; if( $wgShowExceptionDetails ) { return '

' . htmlspecialchars( $this->getMessage() ) . '

Backtrace:

' . nl2br( htmlspecialchars( $this->getTraceAsString() ) ) . "

\n"; } else { return "

Set \$wgShowExceptionDetails = true; " . "in LocalSettings.php to show detailed debugging information.

"; } } /* If wgShowExceptionDetails, return a text message with a backtrace to the error */ function getText() { global $wgShowExceptionDetails; if( $wgShowExceptionDetails ) { return $this->getMessage() . "\nBacktrace:\n" . $this->getTraceAsString() . "\n"; } else { return "

Set \$wgShowExceptionDetails = true; " . "in LocalSettings.php to show detailed debugging information.

"; } } /* Return titles of this error page */ function getPageTitle() { if ( $this->useMessageCache() ) { return wfMsg( 'internalerror' ); } else { global $wgSitename; return "$wgSitename error"; } } /** Return the requested URL and point to file and line number from which the * exception occured */ function getLogMessage() { global $wgRequest; $file = $this->getFile(); $line = $this->getLine(); $message = $this->getMessage(); return $wgRequest->getRequestURL() . " Exception from line $line of $file: $message"; } /** Output the exception report using HTML */ function reportHTML() { global $wgOut; if ( $this->useOutputPage() ) { $wgOut->setPageTitle( $this->getPageTitle() ); $wgOut->setRobotpolicy( "noindex,nofollow" ); $wgOut->setArticleRelated( false ); $wgOut->enableClientCache( false ); $wgOut->redirect( '' ); $wgOut->clearHTML(); $wgOut->addHTML( $this->getHTML() ); $wgOut->output(); } else { echo $this->htmlHeader(); echo $this->getHTML(); echo $this->htmlFooter(); } } /** Print the exception report using text */ function reportText() { echo $this->getText(); } /* Output a report about the exception and takes care of formatting. * It will be either HTML or plain text based on $wgCommandLineMode. */ function report() { global $wgCommandLineMode; if ( $wgCommandLineMode ) { $this->reportText(); } else { $log = $this->getLogMessage(); if ( $log ) { wfDebugLog( 'exception', $log ); } $this->reportHTML(); } } function htmlHeader() { global $wgLogo, $wgSitename, $wgOutputEncoding; if ( !headers_sent() ) { header( 'HTTP/1.0 500 Internal Server Error' ); header( 'Content-type: text/html; charset='.$wgOutputEncoding ); /* Don't cache error pages! They cause no end of trouble... */ header( 'Cache-control: none' ); header( 'Pragma: nocache' ); } $title = $this->getPageTitle(); echo " $title

$title

"; } function htmlFooter() { echo ""; } } /** * Exception class which takes an HTML error message, and does not * produce a backtrace. Replacement for OutputPage::fatalError(). * @addtogroup Exception */ class FatalError extends MWException { function getHTML() { return $this->getMessage(); } function getText() { return $this->getMessage(); } } /** * @addtogroup Exception */ class ErrorPageError extends MWException { public $title, $msg; /** * Note: these arguments are keys into wfMsg(), not text! */ function __construct( $title, $msg ) { $this->title = $title; $this->msg = $msg; parent::__construct( wfMsg( $msg ) ); } function report() { global $wgOut; $wgOut->showErrorPage( $this->title, $this->msg ); $wgOut->output(); } } /** * Install an exception handler for MediaWiki exception types. */ function wfInstallExceptionHandler() { set_exception_handler( 'wfExceptionHandler' ); } /** * 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"; if ( !empty( $GLOBALS['wgCommandLineMode'] ) ) { echo $message; } else { echo nl2br( htmlspecialchars( $message ) ). "\n"; } } } else { echo $e->__toString(); } } /** * Exception handler which simulates the appropriate catch() handling: * * try { * ... * } catch ( MWException $e ) { * $e->report(); * } catch ( Exception $e ) { * echo $e->__toString(); * } */ function wfExceptionHandler( $e ) { global $wgFullyInitialised; wfReportException( $e ); // Final cleanup, similar to wfErrorExit() if ( $wgFullyInitialised ) { try { wfLogProfilingData(); // uses $wgRequest, hence the $wgFullyInitialised condition } catch ( Exception $e ) {} } // Exit value should be nonzero for the benefit of shell jobs exit( 1 ); }