Fixed a E_DEPRECATED
[lhc/web/wiklou.git] / includes / Wiki.php
index 061d1a9..dc4467b 100644 (file)
@@ -16,8 +16,8 @@ class MediaWiki {
         * Stores key/value pairs to circumvent global variables
         * Note that keys are case-insensitive!
         *
-        * @param String $key key to store
-        * @param mixed $value value to put for the key
+        * @param $key String: key to store
+        * @param $value Mixed: value to put for the key
         */
        function setVal( $key, &$value ) {
                $key = strtolower( $key );
@@ -28,8 +28,8 @@ class MediaWiki {
         * Retrieves key/value pairs to circumvent global variables
         * Note that keys are case-insensitive!
         *
-        * @param String $key key to get
-        * @param mixed $default default value if if the key doesn't exist
+        * @param $key String: key to get
+        * @param $default Mixed: default value if if the key doesn't exist
         */
        function getVal( $key, $default = '' ) {
                $key = strtolower( $key );
@@ -43,23 +43,35 @@ class MediaWiki {
         * Initialization of ... everything
         * Performs the request too
         *
-        * @param Title $title
-        * @param Article $article
-        * @param OutputPage $output
-        * @param User $user
-        * @param WebRequest $request
+        * @param $title Title ($wgTitle)
+        * @param $article Article
+        * @param $output OutputPage
+        * @param $user User
+        * @param $request WebRequest
         */
-       function initialize( &$title, &$article, &$output, &$user, $request ) {
+       function performRequestForTitle( &$title, &$article, &$output, &$user, $request ) {
                wfProfileIn( __METHOD__ );
-               $this->preliminaryChecks( $title, $output, $request ) ;
-               if ( !$this->initializeSpecialCases( $title, $output, $request ) ) {
-                       $new_article = $this->initializeArticle( $title, $request );
+               
+               $output->setTitle( $title );
+               
+               wfRunHooks( 'BeforeInitialize', array( &$title, &$article, &$output, &$user, $request, $this ) );
+               
+               if( !$this->preliminaryChecks( $title, $output, $request ) ) {
+                       wfProfileOut( __METHOD__ );
+                       return;
+               }
+               // Call handleSpecialCases() to deal with all special requests...
+               if( !$this->handleSpecialCases( $title, $output, $request ) ) {
+                       // ...otherwise treat it as an article view. The article
+                       // may be a redirect to another article or URL.
+                       $new_article = $this->initializeArticle( $title, $output, $request );
                        if( is_object( $new_article ) ) {
                                $article = $new_article;
                                $this->performAction( $output, $article, $title, $user, $request );
                        } elseif( is_string( $new_article ) ) {
                                $output->redirect( $new_article );
                        } else {
+                               wfProfileOut( __METHOD__ );
                                throw new MWException( "Shouldn't happen: MediaWiki::initializeArticle() returned neither an object nor a URL" );
                        }
                }
@@ -70,14 +82,13 @@ class MediaWiki {
         * Check if the maximum lag of database slaves is higher that $maxLag, and
         * if it's the case, output an error message
         *
-        * @param LoadBalancer $loadBalancer
-        * @param int $maxLag maximum lag allowed for the request, as supplied by
-        *                    the client
-        * @return bool true if the requet can continue
+        * @param $maxLag int: maximum lag allowed for the request, as supplied by
+        *                the client
+        * @return bool true if the request can continue
         */
-       function checkMaxLag( $loadBalancer, $maxLag ) {
-               list( $host, $lag ) = $loadBalancer->getMaxLag();
-               if ( $lag > $maxLag ) {
+       function checkMaxLag( $maxLag ) {
+               list( $host, $lag ) = wfGetLB()->getMaxLag();
+               if( $lag > $maxLag ) {
                        wfMaxlagError( $host, $lag, $maxLag );
                        return false;
                } else {
@@ -85,44 +96,41 @@ class MediaWiki {
                }
        }
 
-
        /**
         * Checks some initial queries
         * Note that $title here is *not* a Title object, but a string!
         *
-        * @param String $title
-        * @param String $action
-        * @param OutputPage $output
-        * @param WebRequest $request
-        * @param Language $lang
+        * @param $title String
+        * @param $action String
         * @return Title object to be $wgTitle
         */
-       function checkInitialQueries( $title, $action, &$output, $request, $lang ) {
-               if( $request->getVal( 'printable' ) == 'yes' ){
-                       $output->setPrintable();
+       function checkInitialQueries( $title, $action ) {
+               global $wgOut, $wgRequest, $wgContLang;
+               if( $wgRequest->getVal( 'printable' ) === 'yes' ) {
+                       $wgOut->setPrintable();
                }
-
-               $ret = NULL;
-
-               if ( '' == $title && 'delete' != $action ) {
-                       $ret = Title::newMainPage();
-               } elseif ( $curid = $request->getInt( 'curid' ) ) {
+               $ret = null;
+               if( $curid = $wgRequest->getInt( 'curid' ) ) {
                        # URLs like this are generated by RC, because rc_title isn't always accurate
                        $ret = Title::newFromID( $curid );
+               } elseif( $title == '' && $action != 'delete' ) {
+                       $ret = Title::newMainPage();
                } 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 );
-
+                       if( count( $wgContLang->getVariants() ) > 1 && !is_null( $ret ) && $ret->getArticleID() == 0 )
+                               $wgContLang->findVariantLink( $title, $ret );
                }
-               if ( ( $oldid = $request->getInt( 'oldid' ) )
-                       && ( is_null( $ret ) || $ret->getNamespace() != NS_SPECIAL ) ) {
-                       // Allow oldid to override a changed or missing title.
-                       $rev = Revision::newFromId( $oldid );
-                       if( $rev ) {
-                               $ret = $rev->getTitle();
+               # For non-special titles, check for implicit titles
+               if( is_null( $ret ) || $ret->getNamespace() != NS_SPECIAL ) {
+                       // We can have urls with just ?diff=,?oldid= or even just ?diff=
+                       $oldid = $wgRequest->getInt( 'oldid' );
+                       $oldid = $oldid ? $oldid : $wgRequest->getInt( 'diff' );
+                       // Allow oldid to override a changed or missing title
+                       if( $oldid ) {
+                               $rev = Revision::newFromId( $oldid );
+                               $ret = $rev ? $rev->getTitle() : $ret;
                        }
                }
                return $ret;
@@ -131,30 +139,30 @@ class MediaWiki {
        /**
         * Checks for search query and anon-cannot-read case
         *
-        * @param Title $title
-        * @param OutputPage $output
-        * @param WebRequest $request
+        * @param $title Title
+        * @param $output OutputPage
+        * @param $request WebRequest
         */
        function preliminaryChecks( &$title, &$output, $request ) {
-
                if( $request->getCheck( 'search' ) ) {
                        // Compatibility with old search URLs which didn't use Special:Search
                        // Just check for presence here, so blank requests still
                        // show the search page when using ugly URLs (bug 8054).
-                       
+
                        // Do this above the read whitelist check for security...
                        $title = SpecialPage::getTitleFor( '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
                # catch special pages etc. We check again in Article::view())
-               if ( !is_null( $title ) && !$title->userCanRead() ) {
+               if( !is_null( $title ) && !$title->userCanRead() ) {
+                       global $wgDeferredUpdateList;
                        $output->loginToUse();
-                       $output->output();
-                       exit;
+                       $this->finalCleanup( $wgDeferredUpdateList, $output );
+                       $output->disable();
+                       return false;
                }
-
+               return true;
        }
 
        /**
@@ -164,37 +172,54 @@ class MediaWiki {
         * - redirect loop
         * - special pages
         *
-        * @param Title $title
-        * @param OutputPage $output
-        * @param WebRequest $request
+        * @param $title Title
+        * @param $output OutputPage
+        * @param $request WebRequest
         * @return bool true if the request is already executed
         */
-       function initializeSpecialCases( &$title, &$output, $request ) {
+       function handleSpecialCases( &$title, &$output, $request ) {
                wfProfileIn( __METHOD__ );
-
+               global $wgContLang, $wgUser;
                $action = $this->getVal( 'Action' );
-               if( !$title || $title->getDBkey() == '' ) {
+               $perferred = $wgContLang->getPreferredVariant( false );
+
+               // Invalid titles. Bug 21776: The interwikis must redirect even if the page name is empty.
+               if( is_null($title) || ( ($title->getDBkey() == '') && ($title->getInterwiki() == '') ) ) {
                        $title = SpecialPage::getTitleFor( 'Badtitle' );
                        # Die now before we mess up $wgArticle and the skin stops working
                        throw new ErrorPageError( 'badtitle', 'badtitletext' );
-               } else if ( $title->getInterwiki() != '' ) {
+
+               // Interwiki redirects
+               } else if( $title->getInterwiki() != '' ) {
                        if( $rdfrom = $request->getVal( 'rdfrom' ) ) {
                                $url = $title->getFullURL( 'rdfrom=' . urlencode( $rdfrom ) );
                        } else {
-                               $url = $title->getFullURL();
+                               $query = $request->getValues();
+                               unset( $query['title'] );
+                               $url = $title->getFullURL( $query );
                        }
                        /* Check for a redirect loop */
-                       if ( !preg_match( '/^' . preg_quote( $this->getVal('Server'), '/' ) . '/', $url ) && $title->isLocal() ) {
+                       if( !preg_match( '/^' . preg_quote( $this->getVal('Server'), '/' ) . '/', $url ) && $title->isLocal() ) {
                                $output->redirect( $url );
                        } else {
                                $title = SpecialPage::getTitleFor( 'Badtitle' );
+                               wfProfileOut( __METHOD__ );
                                throw new ErrorPageError( 'badtitle', 'badtitletext' );
                        }
-               } else if ( ( $action == 'view' ) && !$request->wasPosted() && 
-                       (!isset( $this->GET['title'] ) || $title->getPrefixedDBKey() != $this->GET['title'] ) &&
+               // Redirect loops, no title in URL, $wgUsePathInfo URLs, and URLs with a variant
+               } else if( $action == 'view' && !$request->wasPosted() &&
+                       ( ( !isset($this->GET['title']) || $title->getPrefixedDBKey() != $this->GET['title'] ) ||
+                         // No valid variant in URL (if the main-language has multi-variants), to ensure
+                         // anonymous access would always be redirect to a URL with 'variant' parameter
+                         ( !isset($this->GET['variant']) && $wgContLang->hasVariants() && !$wgUser->isLoggedIn() ) ) &&
                        !count( array_diff( array_keys( $this->GET ), array( 'action', 'title' ) ) ) )
                {
-                       $targetUrl = $title->getFullURL();
+                       if( !$wgUser->isLoggedIn() ) {
+                               $pref = $wgContLang->getPreferredVariant( false, $fromHeader = true );
+                               $targetUrl = $title->getFullURL( '', $variant = $pref );
+                       }
+                       else
+                               $targetUrl = $title->getFullURL();
                        // Redirect to canonical url, make it a 301 to allow caching
                        if( $targetUrl == $request->getFullRequestURL() ) {
                                $message = "Redirect loop detected!\n\n" .
@@ -217,12 +242,14 @@ class MediaWiki {
                                                "to true.";
                                }
                                wfHttpError( 500, "Internal error", $message );
+                               wfProfileOut( __METHOD__ );
                                return false;
                        } else {
                                $output->setSquidMaxage( 1200 );
                                $output->redirect( $targetUrl, '301' );
                        }
-               } else if ( NS_SPECIAL == $title->getNamespace() ) {
+               // Special pages
+               } else if( NS_SPECIAL == $title->getNamespace() ) {
                        /* actions that need to be made when we have a special pages */
                        SpecialPage::executePath( $title );
                } else {
@@ -238,32 +265,28 @@ class MediaWiki {
        /**
         * Create an Article object of the appropriate class for the given page.
         *
-        * @param Title $title
+        * @param $title Title
         * @return Article object
         */
-       static function articleFromTitle( $title ) {
+       static function articleFromTitle( &$title ) {
+               if( NS_MEDIA == $title->getNamespace() ) {
+                       // FIXME: where should this go?
+                       $title = Title::makeTitle( NS_FILE, $title->getDBkey() );
+               }
+
                $article = null;
                wfRunHooks( 'ArticleFromTitle', array( &$title, &$article ) );
-               if ( $article ) {
+               if( $article ) {
                        return $article;
                }
 
-               if( NS_MEDIA == $title->getNamespace() ) {
-                       // FIXME: where should this go?
-                       $title = Title::makeTitle( NS_IMAGE, $title->getDBkey() );
-               }
-
                switch( $title->getNamespace() ) {
-               case NS_IMAGE:
-                       $file = wfFindFile( $title );
-                       if( $file && $file->getRedirected() ) {
+                       case NS_FILE:
+                               return new ImagePage( $title );
+                       case NS_CATEGORY:
+                               return new CategoryPage( $title );
+                       default:
                                return new Article( $title );
-                       }
-                       return new ImagePage( $title );
-               case NS_CATEGORY:
-                       return new CategoryPage( $title );
-               default:
-                       return new Article( $title );
                }
        }
 
@@ -271,46 +294,65 @@ class MediaWiki {
         * 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
+        * @param $title Title ($wgTitle)
+        * @param $output OutputPage ($wgOut)
+        * @param $request WebRequest ($wgRequest)
         * @return mixed an Article, or a string to redirect to another URL
         */
-       function initializeArticle( &$title, $request ) {
+       function initializeArticle( &$title, &$output, $request ) {
                wfProfileIn( __METHOD__ );
 
-               $action = $this->getVal( 'action' );
+               $action = $this->getVal( 'action', 'view' );
                $article = self::articleFromTitle( $title );
-
+               # NS_MEDIAWIKI has no redirects.
+               # It is also used for CSS/JS, so performance matters here...
+               if( $title->getNamespace() == NS_MEDIAWIKI ) {
+                       wfProfileOut( __METHOD__ );
+                       return $article;
+               }
                // Namespace might change when using redirects
-               if( ( $action == 'view' || $action == 'render' ) && !$request->getVal( 'oldid' ) &&
-                                               $request->getVal( 'redirect' ) != 'no' &&
-                                               !( $title->getNamespace() == NS_IMAGE && wfFindFile( $title->getText() ) ) ) {
-
+               // Check for redirects ...
+               $file = ($title->getNamespace() == NS_FILE) ? $article->getFile() : null;
+               if( ( $action == 'view' || $action == 'render' )        // ... for actions that show content
+                       && !$request->getVal( 'oldid' ) &&    // ... and are not old revisions
+                       $request->getVal( 'redirect' ) != 'no' &&       // ... unless explicitly told not to
+                       // ... and the article is not a non-redirect image page with associated file
+                       !( is_object( $file ) && $file->exists() && !$file->getRedirected() ) )
+               {
+                       # Give extensions a change to ignore/handle redirects as needed
+                       $ignoreRedirect = $target = false;
+                       
                        $dbr = wfGetDB( DB_SLAVE );
                        $article->loadPageData( $article->pageDataFromTitle( $dbr, $title ) );
 
-                       // Follow redirects only for... redirects
-                       if( $article->mIsRedirect ) {
-                               $target = $article->followRedirect();
+                       wfRunHooks( 'InitializeArticleMaybeRedirect', 
+                               array(&$title,&$request,&$ignoreRedirect,&$target,&$article) );
+
+                       // Follow redirects only for... redirects.
+                       // If $target is set, then a hook wanted to redirect.
+                       if( !$ignoreRedirect && ($target || $article->isRedirect()) ) {
+                               # Is the target already set by an extension?
+                               $target = $target ? $target : $article->followRedirect();
                                if( is_string( $target ) ) {
                                        if( !$this->getVal( 'DisableHardRedirects' ) ) {
                                                // we'll need to redirect
+                                               wfProfileOut( __METHOD__ );
                                                return $target;
                                        }
                                }
-                               if( is_object( $target ) ) {
+                               if( is_object($target) ) {
                                        // Rewrite environment to redirected article
                                        $rarticle = self::articleFromTitle( $target );
                                        $rarticle->loadPageData( $rarticle->pageDataFromTitle( $dbr, $target ) );
-                                       if ( $rarticle->mTitle->exists() ) {
+                                       if( $rarticle->exists() || ( is_object( $file ) && !$file->isLocal() ) ) {
                                                $rarticle->setRedirectedFrom( $title );
                                                $article = $rarticle;
                                                $title = $target;
+                                               $output->setTitle( $title );
                                        }
                                }
                        } else {
-                               $title = $article->mTitle;
+                               $title = $article->getTitle();
                        }
                }
                wfProfileOut( __METHOD__ );
@@ -318,21 +360,23 @@ class MediaWiki {
        }
 
        /**
-        * Cleaning up by doing deferred updates, calling loadbalancer and doing the
-        * output
+        * Cleaning up request by doing:
+        ** deferred updates, DB transaction, and the output
         *
-        * @param Array $deferredUpdates array of updates to do 
-        * @param LoadBalancer $loadBalancer
-        * @param OutputPage $output
+        * @param $deferredUpdates array of updates to do
+        * @param $output OutputPage
         */
-       function finalCleanup( &$deferredUpdates, &$loadBalancer, &$output ) {
+       function finalCleanup( &$deferredUpdates, &$output ) {
                wfProfileIn( __METHOD__ );
+               # Now commit any transactions, so that unreported errors after
+               # output() don't roll back the whole DB transaction
+               $factory = wfGetLBFactory();
+               $factory->commitMasterChanges();
+               # Output everything!
+               $output->output();
+               # Do any deferred jobs
                $this->doUpdates( $deferredUpdates );
                $this->doJobs();
-               $loadBalancer->saveMasterPos();
-               # Now commit any transactions, so that unreported errors after output() don't roll back the whole thing
-               $loadBalancer->commitMasterChanges();
-               $output->output();
                wfProfileOut( __METHOD__ );
        }
 
@@ -342,7 +386,7 @@ class MediaWiki {
         * Note that for page saves, the client will wait until the script exits
         * anyway before following the redirect.
         *
-        * @param Array $updates array of objects that hold an update to do
+        * @param $updates array of objects that hold an update to do
         */
        function doUpdates( &$updates ) {
                wfProfileIn( __METHOD__ );
@@ -351,13 +395,13 @@ class MediaWiki {
                        wfProfileOut( __METHOD__ );
                        return;
                }
-               
+
                $dbw = wfGetDB( DB_MASTER );
                foreach( $updates as $up ) {
                        $up->doUpdate();
 
                        # Commit after every update to prevent lock contention
-                       if ( $dbw->trxLevel() ) {
+                       if( $dbw->trxLevel() ) {
                                $dbw->commit();
                        }
                }
@@ -370,12 +414,12 @@ class MediaWiki {
        function doJobs() {
                $jobRunRate = $this->getVal( 'JobRunRate' );
 
-               if ( $jobRunRate <= 0 || wfReadOnly() ) {
+               if( $jobRunRate <= 0 || wfReadOnly() ) {
                        return;
                }
-               if ( $jobRunRate < 1 ) {
+               if( $jobRunRate < 1 ) {
                        $max = mt_getrandmax();
-                       if ( mt_rand( 0, $max ) > $max * $jobRunRate ) {
+                       if( mt_rand( 0, $max ) > $max * $jobRunRate ) {
                                return;
                        }
                        $n = 1;
@@ -389,7 +433,7 @@ class MediaWiki {
                        $success = $job->run();
                        $t += wfTime();
                        $t = round( $t*1000 );
-                       if ( !$success ) {
+                       if( !$success ) {
                                $output .= "Error: " . $job->getLastError() . ", Time: $t ms\n";
                        } else {
                                $output .= "Success, Time: $t ms\n";
@@ -403,22 +447,26 @@ class MediaWiki {
         */
        function restInPeace() {
                wfLogProfilingData();
+               # Commit and close up!
+               $factory = wfGetLBFactory();
+               $factory->commitMasterChanges();
+               $factory->shutdown();
                wfDebug( "Request ended normally\n" );
        }
 
        /**
         * Perform one of the "standard" actions
         *
-        * @param OutputPage $output
-        * @param Article $article
-        * @param Title $title
-        * @param User $user
-        * @param WebRequest $request
+        * @param $output OutputPage
+        * @param $article Article
+        * @param $title Title
+        * @param $user User
+        * @param $request WebRequest
         */
        function performAction( &$output, &$article, &$title, &$user, &$request ) {
                wfProfileIn( __METHOD__ );
 
-               if ( !wfRunHooks( 'MediaWikiPerformAction', array( $output, $article, $title, $user, $request ) ) ) {
+               if( !wfRunHooks( 'MediaWikiPerformAction', array( $output, $article, $title, $user, $request, $this ) ) ) {
                        wfProfileOut( __METHOD__ );
                        return;
                }
@@ -429,11 +477,27 @@ class MediaWiki {
                        $action = 'nosuchaction';
                }
 
+               # Workaround for bug #20966: inability of IE to provide an action dependent
+               # on which submit button is clicked.
+               if ( $action === 'historysubmit' ) {
+                       if ( $request->getBool( 'revisiondelete' ) ) {
+                               $action = 'revisiondelete';
+                       } else {
+                               $action = 'view';
+                       }
+               }
+
                switch( $action ) {
                        case 'view':
                                $output->setSquidMaxage( $this->getVal( 'SquidMaxage' ) );
                                $article->view();
                                break;
+                       case 'raw': // includes JS/CSS
+                               wfProfileIn( __METHOD__.'-raw' );
+                               $raw = new RawPage( $article );
+                               $raw->view();
+                               wfProfileOut( __METHOD__.'-raw' );
+                               break;
                        case 'watch':
                        case 'unwatch':
                        case 'delete':
@@ -455,21 +519,20 @@ class MediaWiki {
                                if( !$this->getVal( 'EnableDublinCoreRdf' ) ) {
                                        wfHttpError( 403, 'Forbidden', wfMsg( 'nodublincore' ) );
                                } else {
-                                       require_once( 'includes/Metadata.php' );
-                                       wfDublinCoreRdf( $article );
+                                       $rdf = new DublinCoreRdf( $article );
+                                       $rdf->show();
                                }
                                break;
                        case 'creativecommons':
                                if( !$this->getVal( 'EnableCreativeCommonsRdf' ) ) {
                                        wfHttpError( 403, 'Forbidden', wfMsg( 'nocreativecommons' ) );
                                } else {
-                                       require_once( 'includes/Metadata.php' );
-                                       wfCreativeCommonsRdf( $article );
+                                       $rdf = new CreativeCommonsRdf( $article );
+                                       $rdf->show();
                                }
                                break;
                        case 'credits':
-                               require_once( 'includes/Credits.php' );
-                               showCreditsPage( $article );
+                               Credits::showPage( $article );
                                break;
                        case 'submit':
                                if( session_id() == '' ) {
@@ -499,12 +562,13 @@ class MediaWiki {
                                if( $request->getFullRequestURL() == $title->getInternalURL( 'action=history' ) ) {
                                        $output->setSquidMaxage( $this->getVal( 'SquidMaxage' ) );
                                }
-                               $history = new PageHistory( $article );
+                               $history = new HistoryPage( $article );
                                $history->history();
                                break;
-                       case 'raw':
-                               $raw = new RawPage( $article );
-                               $raw->view();
+                       case 'revisiondelete':
+                               # For show/hide submission from history page
+                               $special = SpecialPage::getPage( 'Revisiondelete' );
+                               $special->execute( '' );
                                break;
                        default:
                                if( wfRunHooks( 'UnknownAction', array( $action, $article ) ) ) {
@@ -516,4 +580,3 @@ class MediaWiki {
        }
 
 }; /* End of class MediaWiki */
-