Added a function that returns the list of supported formats to ApiMain
[lhc/web/wiklou.git] / includes / Exception.php
index 5e7e1ca..67ad329 100644 (file)
@@ -39,7 +39,7 @@ class MWException extends Exception {
                        }
                }
 
-               return is_object( $wgLang );
+               return $wgLang instanceof Language;
        }
 
        /**
@@ -88,7 +88,7 @@ class MWException extends Exception {
                $args = array_slice( func_get_args(), 2 );
 
                if ( $this->useMessageCache() ) {
-                       return wfMsgReal( $key, $args );
+                       return wfMsgNoTrans( $key, $args );
                } else {
                        return wfMsgReplaceArgs( $fallback, $args );
                }
@@ -133,13 +133,8 @@ class MWException extends Exception {
 
        /* Return titles of this error page */
        function getPageTitle() {
-               if ( $this->useMessageCache() ) {
-                       return wfMsg( 'internalerror' );
-               } else {
-                       global $wgSitename;
-
-                       return "$wgSitename error";
-               }
+               global $wgSitename;
+               return $this->msg( 'internalerror', "$wgSitename error" );
        }
 
        /**
@@ -226,7 +221,7 @@ class MWException extends Exception {
         * $wgOut to output the exception.
         */
        function htmlHeader() {
-               global $wgLogo, $wgOutputEncoding;
+               global $wgLogo, $wgOutputEncoding, $wgLang;
 
                if ( !headers_sent() ) {
                        header( 'HTTP/1.0 500 Internal Server Error' );
@@ -236,23 +231,51 @@ class MWException extends Exception {
                        header( 'Pragma: nocache' );
                }
 
-               $logo = htmlspecialchars( $wgLogo, ENT_QUOTES );
-               $title = htmlspecialchars( $this->getPageTitle() );
+               $head = Html::element( 'title', null, $this->getPageTitle() ) . "\n";
+               $head .= Html::inlineStyle( <<<ENDL
+       body {
+               color: #000;
+               background-color: #fff;
+               font-family: sans-serif;
+               padding: 2em;
+               text-align: center;
+       }
+       p, img, h1 {
+               text-align: left;
+               margin: 0.5em 0;
+       }
+       h1 {
+               font-size: 120%;
+       }
+ENDL
+               );
 
-               return "<html>
-               <head>
-               <title>$title</title>
-               </head>
-               <body>
-               <h1><img src='$logo' style='float:left;margin-right:1em' alt=''/>$title</h1>
-               ";
+               $dir = 'ltr';
+               $code = 'en';
+
+               if ( $wgLang instanceof Language ) {
+                       $dir = $wgLang->getDir();
+                       $code = $wgLang->getCode();
+               }
+
+               $header = Html::element( 'img', array(
+                       'src' => $wgLogo,
+                       'alt' => '' ) );
+
+               $attribs = array( 'dir' => $dir, 'lang' => $code );
+
+               return
+                       Html::htmlHeader( $attribs ) .
+                       Html::rawElement( 'head', null, $head ) . "\n".
+                       Html::openElement( 'body' ) . "\n" .
+                       $header . "\n";
        }
 
        /**
         * print the end of the html page if not using $wgOut.
         */
        function htmlFooter() {
-               return "</body></html>";
+               return Html::closeElement( 'body' ) . Html::closeElement( 'html' );
        }
 
        /**
@@ -283,28 +306,154 @@ class FatalError extends MWException {
 }
 
 /**
+ * An error page which can definitely be safely rendered using the OutputPage
  * @ingroup Exception
  */
 class ErrorPageError extends MWException {
-       public $title, $msg;
+       public $title, $msg, $params;
 
        /**
         * Note: these arguments are keys into wfMsg(), not text!
         */
-       function __construct( $title, $msg ) {
+       function __construct( $title, $msg, $params = null ) {
                $this->title = $title;
                $this->msg = $msg;
-               parent::__construct( wfMsg( $msg ) );
+               $this->params = $params;
+
+               if( $msg instanceof Message ){
+                       parent::__construct( $msg );
+               } else {
+                       parent::__construct( wfMsg( $msg ) );
+               }
        }
 
        function report() {
                global $wgOut;
 
-               $wgOut->showErrorPage( $this->title, $this->msg );
+               if ( $wgOut->getTitle() ) {
+                       $wgOut->debug( 'Original title: ' . $wgOut->getTitle()->getPrefixedText() . "\n" );
+               }
+               $wgOut->setPageTitle( wfMsg( $this->title ) );
+               $wgOut->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
+               $wgOut->setRobotPolicy( 'noindex,nofollow' );
+               $wgOut->setArticleRelated( false );
+               $wgOut->enableClientCache( false );
+               $wgOut->mRedirect = '';
+               $wgOut->clearHTML();
+
+               if( $this->msg instanceof Message ){
+                       $wgOut->addHTML( $this->msg->parse() );
+               } else {
+                       $wgOut->addWikiMsgArray( $this->msg, $this->params );
+               }
+
+               $wgOut->returnToMain();
                $wgOut->output();
        }
 }
 
+/**
+ * Show an error when a user tries to do something they do not have the necessary
+ * permissions for.
+ */
+class PermissionsError extends ErrorPageError {
+       public $permission;
+
+       function __construct( $permission ) {
+               global $wgLang;
+
+               $this->permission = $permission;
+
+               $groups = array_map(
+                       array( 'User', 'makeGroupLinkWiki' ),
+                       User::getGroupsWithPermission( $this->permission )
+               );
+
+               if( $groups ) {
+                       parent::__construct(
+                               'badaccess',
+                               'badaccess-groups',
+                               array(
+                                       $wgLang->commaList( $groups ),
+                                       count( $groups )
+                               )
+                       );
+               } else {
+                       parent::__construct(
+                               'badaccess',
+                               'badaccess-group0'
+                       );
+               }
+       }
+}
+
+/**
+ * Show an error when the wiki is locked/read-only and the user tries to do
+ * something that requires write access
+ */
+class ReadOnlyError extends ErrorPageError {
+       public function __construct(){
+               parent::__construct(
+                       'readonly',
+                       'readonlytext',
+                       wfReadOnlyReason()
+               );
+       }
+}
+
+/**
+ * Show an error when the user hits a rate limit
+ */
+class ThrottledError extends ErrorPageError {
+       public function __construct(){
+               parent::__construct(
+                       'actionthrottled',
+                       'actionthrottledtext'
+               );
+       }
+       public function report(){
+               global $wgOut;
+               $wgOut->setStatusCode( 503 );
+               return parent::report();
+       }
+}
+
+/**
+ * Show an error when the user tries to do something whilst blocked
+ */
+class UserBlockedError extends ErrorPageError {
+       public function __construct( Block $block ){
+               global $wgLang;
+
+               $blockerUserpage = $block->getBlocker()->getUserPage();
+               $link = "[[{$blockerUserpage->getPrefixedText()}|{$blockerUserpage->getText()}]]";
+
+               $reason = $block->mReason;
+               if( $reason == '' ) {
+                       $reason = wfMsg( 'blockednoreason' );
+               }
+
+               /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
+                * This could be a username, an IP range, or a single IP. */
+               $intended = $block->getTarget();
+
+               parent::__construct(
+                       'blockedtitle',
+                       $block->mAuto ? 'autoblocketext' : 'blockedtext',
+                       array(
+                               $link,
+                               $reason,
+                               wfGetIP(),
+                               $block->getBlocker()->getName(),
+                               $block->getId(),
+                               $wgLang->formatExpiry( $block->mExpiry ),
+                               $intended,
+                               $wgLang->timeanddate( wfTimestamp( TS_MW, $block->mTimestamp ), true )
+                       )
+               );
+       }
+}
+
 /**
  * Install an exception handler for MediaWiki exception types.
  */
@@ -322,6 +471,7 @@ function wfReportException( Exception $e ) {
 
        if ( $e instanceof MWException ) {
                try {
+                       // Try and show the exception prettily, with the normal skin infrastructure
                        $e->report();
                } catch ( Exception $e2 ) {
                        // Exception occurred from within exception handler
@@ -343,7 +493,7 @@ function wfReportException( Exception $e ) {
                        if ( $cmdLine ) {
                                wfPrintError( $message );
                        } else {
-                               echo nl2br( htmlspecialchars( $message ) ) . "\n";
+                               wfDie( htmlspecialchars( $message ) ) . "\n";
                        }
                }
        } else {
@@ -357,7 +507,7 @@ function wfReportException( Exception $e ) {
                if ( $cmdLine ) {
                        wfPrintError( $message );
                } else {
-                       echo nl2br( htmlspecialchars( $message ) ) . "\n";
+                       wfDie( htmlspecialchars( $message ) ) . "\n";
                }
        }
 }