* Fix explicit s-maxage=0 on raw pages; should help with proxy issues in
[lhc/web/wiklou.git] / includes / Wiki.php
index 0c8633e..407a3b6 100644 (file)
@@ -28,7 +28,7 @@ class MediaWiki {
         * Retieves key/value pairs to circumvent global variables
         * Note that keys are case-insensitive!
         */
-       function getVal( $key, $default = "" ) {
+       function getVal( $key, $default = '' ) {
                $key = strtolower( $key );
                if( isset( $this->params[$key] ) ) {
                        return $this->params[$key];
@@ -40,19 +40,57 @@ class MediaWiki {
         * Initialization of ... everything
         @return Article either the object to become $wgArticle, or NULL
         */
-       function initialize ( &$title, &$output, &$user, $request ) {
+       function initialize ( &$title, &$output, &$user, $request) {
                wfProfileIn( 'MediaWiki::initialize' );
-               $this->preliminaryChecks ( $title , $output , $request ) ;
+               $this->preliminaryChecks ( $title, $output, $request ) ;
                $article = NULL;
                if ( !$this->initializeSpecialCases( $title, $output, $request ) ) {
                        $article = $this->initializeArticle( $title, $request );
-                       $this->performAction( $output, $article, $title, $user, $request );
+                       if( is_object( $article ) ) {
+                               $this->performAction( $output, $article, $title, $user, $request );
+                       } elseif( is_string( $article ) ) {
+                               $output->redirect( $article );
+                       } else {
+                               wfDebugDieBacktrace( "Shouldn't happen: MediaWiki::initializeArticle() returned neither an object nor a URL" );
+                       }
                }
                wfProfileOut( 'MediaWiki::initialize' );
                return $article;
        }
        
-       function preliminaryChecks ( &$title , &$output , $request ) {
+       /**
+        * Checks some initial queries
+        * Note that $title here is *not* a Title object, but a string!
+        */
+       function checkInitialQueries( $title,$action,&$output,$request, $lang) {
+               if ($request->getVal( 'printable' ) == 'yes') {
+                       $output->setPrintable();
+               }
+               
+               $ret = NULL ;
+               
+               
+               if ( '' == $title && 'delete' != $action ) {
+                       $ret = Title::newFromText( wfMsgForContent( 'mainpage' ) );
+               } elseif ( $curid = $request->getInt( 'curid' ) ) {
+                       # URLs like this are generated by RC, because rc_title isn't always accurate
+                       $ret = Title::newFromID( $curid );
+               } else {
+                       $ret = Title::newFromURL( $title );
+                       /* check variant links so that interwiki links don't have to worry about
+                          the possible different language variants
+                       */
+                       if( count($lang->getVariants()) > 1 && !is_null($ret) && $ret->getArticleID() == 0 )
+                               $lang->findVariantLink( $title, $ret );
+               
+               }
+               return $ret ;
+       }
+       
+       /**
+        * Checks for search query and anon-cannot-read case
+        */
+       function preliminaryChecks ( &$title, &$output, $request ) {
        
                # Debug statement for user levels
                // print_r($wgUser);
@@ -63,7 +101,7 @@ class MediaWiki {
                        // Do this above the read whitelist check for security...
                        $title = Title::makeTitle( NS_SPECIAL, 'Search' );
                }
-               $this->setVal( "Search", $search );
+               $this->setVal( 'Search', $search );
 
                # If the user is not logged in, the Namespace:title of the article must be in
                # the Read array in order for the user to see it. (We have to check here to
@@ -126,46 +164,80 @@ class MediaWiki {
        }
 
        /**
-        * Initialize the object to be known as $wgArticle for "standard" actions
+        * Create an Article object of the appropriate class for the given page.
+        * @param Title $title
+        * @return Article
         */
-       function initializeArticle( &$title, $request ) {
-
-               wfProfileIn( 'MediaWiki::initializeArticle' );
-               
-               $action = $this->getVal('Action');
-
+       function articleFromTitle( $title ) {
                if( NS_MEDIA == $title->getNamespace() ) {
+                       // FIXME: where should this go?
                        $title = Title::makeTitle( NS_IMAGE, $title->getDBkey() );
                }
        
-               $ns = $title->getNamespace();
+               switch( $title->getNamespace() ) {
+               case NS_IMAGE:
+                       require_once( 'includes/ImagePage.php' );
+                       return new ImagePage( $title );
+               case NS_CATEGORY:
+                       require_once( 'includes/CategoryPage.php' );
+                       return new CategoryPage( $title );
+               default:
+                       return new Article( $title );
+               }
+       }
        
-               /* Namespace might change when using redirects */
-               $article = new Article( $title );
-               if( $action == 'view' && !$request->getVal( 'oldid' ) ) {
-                       $rTitle = Title::newFromRedirect( $article->fetchContent() );
-                       if( $rTitle ) {
-                               /* Reload from the page pointed to later */
-                               $article->mContentLoaded = false;
-                               $ns = $rTitle->getNamespace();
-                               $wasRedirected = true;
+       /**
+        * Initialize the object to be known as $wgArticle for "standard" actions
+        * Create an Article object for the page, following redirects if needed.
+        * @param Title $title
+        * @param Request $request
+        * @param string $action
+        * @return mixed an Article, or a string to redirect to another URL
+        */
+       function initializeArticle( $title, $request ) {
+               global $wgTitle;
+               wfProfileIn( 'MediaWiki::initializeArticle' );
+               
+               $action = $this->getVal('Action');
+               $article = $this->articleFromTitle( $title );
+               
+               // Namespace might change when using redirects
+               if( $action == 'view' && !$request->getVal( 'oldid' ) && 
+                                               $request->getVal( 'redirect' ) != 'no' ) {
+                       $dbr=&wfGetDB(DB_SLAVE);
+                       
+                       // If we don't check for existance we'll get "Trying to get
+                       // property of non-object" E_NOTICE in Article::loadPageData() when
+                       // viewing a page that does not exist
+                       if ( $article->exists() ) {
+                               $article->loadPageData($article->pageDataFromTitle($dbr,$title));
+                       }
+                       
+                       /* Follow redirects only for... redirects */
+                       if ($article->mIsRedirect) {
+                               $target = $article->followRedirect();
+                               if( is_string( $target ) ) {
+                                       global $wgDisableHardRedirects;
+                                       if( !$wgDisableHardRedirects ) {
+                                               // we'll need to redirect
+                                               return $target;
+                                       }
                                }
-               }
-
-               /* Categories and images are handled by a different class */
-               if( $ns == NS_IMAGE ) {
-                       $b4 = $title->getPrefixedText();
-                       unset( $article );
-                       require_once( 'includes/ImagePage.php' );
-                       $article = new ImagePage( $title );
-                       if( isset( $wasRedirected ) && $request->getVal( 'redirect' ) != 'no' ) {
-                               $article->mTitle = $rTitle;
-                               $article->mRedirectedFrom = $b4;
+                               if( is_object( $target ) ) {
+                                       /* Rewrite environment to redirected article */
+                                       $rarticle = $this->articleFromTitle($target);
+                                       $rarticle->loadPageData($rarticle->pageDataFromTitle($dbr,$target));
+                                       if ($rarticle->mTitle->mArticleID) {
+                                               $article = $rarticle;
+                                               $wgTitle = $target;
+                                               $article->setRedirectedFrom( $title );
+                                       } else {
+                                               $wgTitle = $title;
+                                       }
+                               }
+                       } else {
+                               $wgTitle = $article->mTitle;
                        }
-               } elseif( $ns == NS_CATEGORY ) {
-                       unset( $article );
-                       require_once( 'includes/CategoryPage.php' );
-                       $article = new CategoryPage( $title );
                }
                wfProfileOut( 'MediaWiki::initializeArticle' );
                return $article;
@@ -174,7 +246,7 @@ class MediaWiki {
        /**
         * Cleaning up by doing deferred updates, calling loadbalancer and doing the output
         */
-       function finalCleanup ( &$deferredUpdates , &$loadBalancer , &$output ) {
+       function finalCleanup ( &$deferredUpdates, &$loadBalancer, &$output ) {
                wfProfileIn( 'MediaWiki::finalCleanup' );
                $this->doUpdates( $deferredUpdates );
                $loadBalancer->saveMasterPos();
@@ -217,7 +289,7 @@ class MediaWiki {
                $action = $this->getVal('Action');
                if( in_array( $action, $this->getVal('DisabledActions',array()) ) ) {
                        /* No such action; this will switch to the default case */
-                       $action = "nosuchaction"; 
+                       $action = 'nosuchaction';
                }
 
                switch( $action ) {
@@ -312,4 +384,3 @@ class MediaWiki {
 }; /* End of class MediaWiki */
 
 ?>
-