2006-06-07 06:40:24 +00:00
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<?php
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2007-04-20 08:55:14 +00:00
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/**
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2007-04-21 12:42:27 +00:00
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* MediaWiki exception
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2007-04-20 08:55:14 +00:00
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* @addtogroup Exception
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*/
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2006-06-07 06:40:24 +00:00
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class MWException extends Exception
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{
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function useOutputPage() {
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2006-07-26 07:15:39 +00:00
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return !empty( $GLOBALS['wgFullyInitialised'] ) &&
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!empty( $GLOBALS['wgArticle'] ) && !empty( $GLOBALS['wgTitle'] );
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2006-06-07 06:40:24 +00:00
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}
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function useMessageCache() {
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global $wgLang;
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return is_object( $wgLang );
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}
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2007-04-21 12:42:27 +00:00
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/** Get a message from i18n */
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2006-06-07 06:40:24 +00:00
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function msg( $key, $fallback /*[, params...] */ ) {
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$args = array_slice( func_get_args(), 2 );
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if ( $this->useMessageCache() ) {
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return wfMsgReal( $key, $args );
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} else {
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return wfMsgReplaceArgs( $fallback, $args );
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}
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}
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2006-10-11 18:57:49 +00:00
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2007-04-21 12:42:27 +00:00
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/* If wgShowExceptionDetails, return a HTML message with a backtrace to the error. */
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2006-06-07 06:40:24 +00:00
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function getHTML() {
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2006-10-11 18:57:49 +00:00
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global $wgShowExceptionDetails;
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if( $wgShowExceptionDetails ) {
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return '<p>' . htmlspecialchars( $this->getMessage() ) .
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'</p><p>Backtrace:</p><p>' . nl2br( htmlspecialchars( $this->getTraceAsString() ) ) .
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"</p>\n";
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} else {
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return "<p>Set <b><tt>\$wgShowExceptionDetails = true;</tt></b> " .
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"in LocalSettings.php to show detailed debugging information.</p>";
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}
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2006-06-07 06:40:24 +00:00
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}
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2007-04-21 12:42:27 +00:00
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/* If wgShowExceptionDetails, return a text message with a backtrace to the error */
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2006-06-07 06:40:24 +00:00
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function getText() {
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2006-10-11 18:57:49 +00:00
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global $wgShowExceptionDetails;
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if( $wgShowExceptionDetails ) {
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return $this->getMessage() .
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"\nBacktrace:\n" . $this->getTraceAsString() . "\n";
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} else {
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return "<p>Set <tt>\$wgShowExceptionDetails = true;</tt> " .
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"in LocalSettings.php to show detailed debugging information.</p>";
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}
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2006-06-07 06:40:24 +00:00
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}
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2007-04-21 12:42:27 +00:00
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/* Return titles of this error page */
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2006-06-07 06:40:24 +00:00
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function getPageTitle() {
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if ( $this->useMessageCache() ) {
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return wfMsg( 'internalerror' );
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} else {
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global $wgSitename;
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return "$wgSitename error";
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}
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}
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2007-04-21 12:42:27 +00:00
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/** Return the requested URL and point to file and line number from which the
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* exception occured
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*/
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2006-08-02 17:40:09 +00:00
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function getLogMessage() {
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2007-01-16 01:45:51 +00:00
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global $wgRequest;
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2006-08-02 17:40:09 +00:00
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$file = $this->getFile();
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$line = $this->getLine();
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$message = $this->getMessage();
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2007-01-16 01:45:51 +00:00
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return $wgRequest->getRequestURL() . " Exception from line $line of $file: $message";
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2006-08-02 17:40:09 +00:00
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}
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2007-04-21 12:42:27 +00:00
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/** Output the exception report using HTML */
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2006-06-07 06:40:24 +00:00
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function reportHTML() {
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global $wgOut;
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if ( $this->useOutputPage() ) {
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$wgOut->setPageTitle( $this->getPageTitle() );
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$wgOut->setRobotpolicy( "noindex,nofollow" );
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$wgOut->setArticleRelated( false );
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$wgOut->enableClientCache( false );
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$wgOut->redirect( '' );
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$wgOut->clearHTML();
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$wgOut->addHTML( $this->getHTML() );
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$wgOut->output();
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} else {
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echo $this->htmlHeader();
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echo $this->getHTML();
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echo $this->htmlFooter();
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}
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}
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2007-04-21 12:42:27 +00:00
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/** Print the exception report using text */
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2006-06-07 06:40:24 +00:00
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function reportText() {
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echo $this->getText();
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}
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2007-04-21 12:42:27 +00:00
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/* Output a report about the exception and takes care of formatting.
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* It will be either HTML or plain text based on $wgCommandLineMode.
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*/
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2006-06-07 06:40:24 +00:00
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function report() {
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global $wgCommandLineMode;
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if ( $wgCommandLineMode ) {
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$this->reportText();
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} else {
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2006-08-02 17:40:09 +00:00
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$log = $this->getLogMessage();
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if ( $log ) {
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wfDebugLog( 'exception', $log );
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}
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2006-06-07 06:40:24 +00:00
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$this->reportHTML();
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}
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}
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function htmlHeader() {
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global $wgLogo, $wgSitename, $wgOutputEncoding;
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if ( !headers_sent() ) {
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header( 'HTTP/1.0 500 Internal Server Error' );
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header( 'Content-type: text/html; charset='.$wgOutputEncoding );
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/* Don't cache error pages! They cause no end of trouble... */
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header( 'Cache-control: none' );
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header( 'Pragma: nocache' );
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}
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$title = $this->getPageTitle();
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echo "<html>
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<head>
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<title>$title</title>
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</head>
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<body>
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<h1><img src='$wgLogo' style='float:left;margin-right:1em' alt=''>$title</h1>
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";
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}
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function htmlFooter() {
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echo "</body></html>";
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2006-07-11 17:40:11 +00:00
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}
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2006-08-02 17:40:09 +00:00
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2006-06-07 06:40:24 +00:00
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}
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/**
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2006-07-11 17:40:11 +00:00
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* Exception class which takes an HTML error message, and does not
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2006-06-07 06:40:24 +00:00
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* produce a backtrace. Replacement for OutputPage::fatalError().
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2007-04-20 08:55:14 +00:00
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* @addtogroup Exception
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2006-06-07 06:40:24 +00:00
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*/
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class FatalError extends MWException {
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function getHTML() {
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return $this->getMessage();
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}
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function getText() {
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return $this->getMessage();
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}
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}
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2007-04-20 08:55:14 +00:00
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/**
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* @addtogroup Exception
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*/
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2006-06-07 06:40:24 +00:00
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class ErrorPageError extends MWException {
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public $title, $msg;
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/**
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* Note: these arguments are keys into wfMsg(), not text!
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*/
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function __construct( $title, $msg ) {
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$this->title = $title;
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$this->msg = $msg;
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parent::__construct( wfMsg( $msg ) );
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}
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function report() {
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global $wgOut;
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$wgOut->showErrorPage( $this->title, $this->msg );
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$wgOut->output();
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}
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}
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/**
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* Install an exception handler for MediaWiki exception types.
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*/
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function wfInstallExceptionHandler() {
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set_exception_handler( 'wfExceptionHandler' );
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}
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/**
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* Report an exception to the user
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*/
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function wfReportException( Exception $e ) {
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2006-11-29 05:45:03 +00:00
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if ( $e instanceof MWException ) {
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2006-06-07 06:40:24 +00:00
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try {
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$e->report();
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} catch ( Exception $e2 ) {
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// Exception occurred from within exception handler
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2006-07-11 17:40:11 +00:00
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// Show a simpler error message for the original exception,
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2006-06-07 06:40:24 +00:00
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// don't try to invoke report()
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$message = "MediaWiki internal error.\n\n" .
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2006-07-11 17:40:11 +00:00
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"Original exception: " . $e->__toString() .
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"\n\nException caught inside exception handler: " .
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2006-06-07 06:40:24 +00:00
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$e2->__toString() . "\n";
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if ( !empty( $GLOBALS['wgCommandLineMode'] ) ) {
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echo $message;
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} else {
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echo nl2br( htmlspecialchars( $message ) ). "\n";
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}
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}
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} else {
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echo $e->__toString();
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}
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}
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/**
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* Exception handler which simulates the appropriate catch() handling:
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2006-07-11 17:40:11 +00:00
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*
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2006-06-07 06:40:24 +00:00
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* try {
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* ...
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* } catch ( MWException $e ) {
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* $e->report();
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* } catch ( Exception $e ) {
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* echo $e->__toString();
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* }
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*/
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function wfExceptionHandler( $e ) {
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global $wgFullyInitialised;
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wfReportException( $e );
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2007-04-21 12:42:27 +00:00
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2006-06-07 06:40:24 +00:00
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// Final cleanup, similar to wfErrorExit()
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if ( $wgFullyInitialised ) {
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try {
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2006-07-14 05:35:31 +00:00
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wfLogProfilingData(); // uses $wgRequest, hence the $wgFullyInitialised condition
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2006-06-07 06:40:24 +00:00
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} catch ( Exception $e ) {}
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}
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// Exit value should be nonzero for the benefit of shell jobs
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exit( 1 );
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}
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2007-06-29 01:19:14 +00:00
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