+++ /dev/null
-<?php
-/**
- * MediaWiki is the to-be base class for this whole project
- *
- * @internal documentation reviewed 15 Mar 2010
- */
-class MediaWiki {
- var $params = array();
-
- /** Constructor */
- function __construct() {}
-
- /**
- * Stores key/value pairs to circumvent global variables
- * Note that keys are case-insensitive!
- *
- * @param $key String: key to store
- * @param $value Mixed: value to put for the key
- */
- function setVal( $key, &$value ) {
- $key = strtolower( $key );
- $this->params[$key] =& $value;
- }
-
- /**
- * Retrieves key/value pairs to circumvent global variables
- * Note that keys are case-insensitive!
- *
- * @param $key String: key to get
- * @param $default string default value, defaults to empty string
- * @return $default Mixed: default value if if the key doesn't exist
- */
- function getVal( $key, $default = '' ) {
- $key = strtolower( $key );
- if( isset( $this->params[$key] ) ) {
- return $this->params[$key];
- }
- return $default;
- }
-
- /**
- * Initialization of ... everything
- * Performs the request too
- *
- * @param $title Title ($wgTitle)
- * @param $article Article
- * @param $output OutputPage
- * @param $user User
- * @param $request WebRequest
- */
- function performRequestForTitle( &$title, &$article, &$output, &$user, $request ) {
- wfProfileIn( __METHOD__ );
-
- $output->setTitle( $title );
-
- wfRunHooks( 'BeforeInitialize', array( &$title, &$article, &$output, &$user, $request, $this ) );
-
- if( !$this->preliminaryChecks( $title, $output ) ) {
- wfProfileOut( __METHOD__ );
- return;
- }
- // Call handleSpecialCases() to deal with all special requests...
- if( !$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" );
- }
- }
- wfProfileOut( __METHOD__ );
- }
-
- /**
- * Check if the maximum lag of database slaves is higher that $maxLag, and
- * if it's the case, output an error message
- *
- * @param $maxLag int: maximum lag allowed for the request, as supplied by
- * the client
- * @return bool true if the request can continue
- */
- function checkMaxLag( $maxLag ) {
- list( $host, $lag ) = wfGetLB()->getMaxLag();
- if( $lag > $maxLag ) {
- wfMaxlagError( $host, $lag, $maxLag );
- return false;
- } else {
- return true;
- }
- }
-
- /**
- * Checks some initial queries
- * Note that $title here is *not* a Title object, but a string!
- *
- * @param $title String
- * @param $action String
- * @return Title object to be $wgTitle
- */
- function checkInitialQueries( $title, $action ) {
- global $wgOut, $wgRequest, $wgContLang;
- if( $wgRequest->getVal( 'printable' ) === 'yes' ) {
- $wgOut->setPrintable();
- }
-
- $curid = $wgRequest->getInt( 'curid' );
- if( $wgRequest->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).
- $ret = SpecialPage::getTitleFor( 'Search' );
- } elseif( $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( $wgContLang->getVariants() ) > 1 && !is_null( $ret ) && $ret->getArticleID() == 0 )
- $wgContLang->findVariantLink( $title, $ret );
- }
- // 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;
- }
-
- /**
- * Checks for anon-cannot-read case
- *
- * @param $title Title
- * @param $output OutputPage
- * @return boolean true if successful
- */
- function preliminaryChecks( &$title, &$output ) {
- global $wgTitle;
- // 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() ) {
- // Bug 32276: allowing the skin to generate output with $wgTitle
- // set to the input title would allow anonymous users to
- // determine whether a page exists, potentially leaking private data. In fact, the
- // curid and oldid request parameters would allow page titles to be enumerated even
- // when they are not guessable. So we reset the title to Special:Badtitle before the
- // permissions error is displayed.
- $badtitle = SpecialPage::getTitleFor( 'Badtitle' );
- $output->setTitle( $badtitle );
- $wgTitle = $badtitle;
-
- $output->loginToUse();
- $this->finalCleanup( $output );
- $output->disable();
- return false;
- }
- return true;
- }
-
- /**
- * Initialize some special cases:
- * - bad titles
- * - local interwiki redirects
- * - redirect loop
- * - special pages
- *
- * @param $title Title
- * @param $output OutputPage
- * @param $request WebRequest
- * @return bool true if the request is already executed
- */
- function handleSpecialCases( &$title, &$output, $request ) {
- wfProfileIn( __METHOD__ );
-
- $action = $this->getVal( 'Action' );
-
- // Invalid titles. Bug 21776: The interwikis must redirect even if the page name is empty.
- if( is_null($title) || ( ( $title->getDBkey() == '' ) && ( $title->getInterwiki() == '' ) ) ) {
- $title = SpecialPage::getTitleFor( 'Badtitle' );
- $output->setTitle( $title ); // bug 21456
- // Die now before we mess up $wgArticle and the skin stops working
- throw new ErrorPageError( 'badtitle', 'badtitletext' );
-
- // Interwiki redirects
- } else if( $title->getInterwiki() != '' ) {
- $rdfrom = $request->getVal( 'rdfrom' );
- if( $rdfrom ) {
- $url = $title->getFullURL( 'rdfrom=' . urlencode( $rdfrom ) );
- } else {
- $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() ) {
- // 301 so google et al report the target as the actual url.
- $output->redirect( $url, 301 );
- } else {
- $title = SpecialPage::getTitleFor( 'Badtitle' );
- $output->setTitle( $title ); // bug 21456
- wfProfileOut( __METHOD__ );
- throw new ErrorPageError( 'badtitle', 'badtitletext' );
- }
- // Redirect loops, no title in URL, $wgUsePathInfo URLs, and URLs with a variant
- } else if ( $action == 'view' && !$request->wasPosted()
- && ( $request->getVal( 'title' ) === null || $title->getPrefixedDBKey() != $request->getVal( 'title' ) )
- && !count( array_diff( array_keys( $request->getValues() ), array( 'action', 'title' ) ) ) )
- {
- if ( $title->getNamespace() == NS_SPECIAL ) {
- list( $name, $subpage ) = SpecialPage::resolveAliasWithSubpage( $title->getDBkey() );
- if ( $name ) {
- $title = SpecialPage::getTitleFor( $name, $subpage );
- }
- }
- $targetUrl = $title->getFullURL();
- // Redirect to canonical url, make it a 301 to allow caching
- if( $targetUrl == $request->getFullRequestURL() ) {
- $message = "Redirect loop detected!\n\n" .
- "This means the wiki got confused about what page was " .
- "requested; this sometimes happens when moving a wiki " .
- "to a new server or changing the server configuration.\n\n";
-
- if( $this->getVal( 'UsePathInfo' ) ) {
- $message .= "The wiki is trying to interpret the page " .
- "title from the URL path portion (PATH_INFO), which " .
- "sometimes fails depending on the web server. Try " .
- "setting \"\$wgUsePathInfo = false;\" in your " .
- "LocalSettings.php, or check that \$wgArticlePath " .
- "is correct.";
- } else {
- $message .= "Your web server was detected as possibly not " .
- "supporting URL path components (PATH_INFO) correctly; " .
- "check your LocalSettings.php for a customized " .
- "\$wgArticlePath setting and/or toggle \$wgUsePathInfo " .
- "to true.";
- }
- wfHttpError( 500, "Internal error", $message );
- wfProfileOut( __METHOD__ );
- return false;
- } else {
- $output->setSquidMaxage( 1200 );
- $output->redirect( $targetUrl, '301' );
- }
- // Special pages
- } else if( NS_SPECIAL == $title->getNamespace() ) {
- /* actions that need to be made when we have a special pages */
- SpecialPage::executePath( $title );
- } else {
- /* No match to special cases */
- wfProfileOut( __METHOD__ );
- return false;
- }
- /* Did match a special case */
- wfProfileOut( __METHOD__ );
- return true;
- }
-
- /**
- * Create an Article object of the appropriate class for the given page.
- *
- * @param $title Title
- * @return Article object
- */
- static function articleFromTitle( &$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 ) {
- return $article;
- }
-
- switch( $title->getNamespace() ) {
- case NS_FILE:
- return new ImagePage( $title );
- case NS_CATEGORY:
- return new CategoryPage( $title );
- default:
- return new Article( $title );
- }
- }
-
- /**
- * Initialize the object to be known as $wgArticle for "standard" actions
- * Create an Article object for the page, following redirects if needed.
- *
- * @param $title Title ($wgTitle)
- * @param $output OutputPage ($wgOut)
- * @param $request WebRequest ($wgRequest)
- * @return mixed an Article, or a string to redirect to another URL
- */
- function initializeArticle( &$title, &$output, $request ) {
- wfProfileIn( __METHOD__ );
-
- $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
- // 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( 'diff' ) && // ... and not when showing diff
- $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, $title ) );
-
- wfRunHooks( 'InitializeArticleMaybeRedirect',
- array(&$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) ) {
- // Rewrite environment to redirected article
- $rarticle = self::articleFromTitle( $target );
- $rarticle->loadPageData( $rarticle->pageDataFromTitle( $dbr, $target ) );
- if( $rarticle->exists() || ( is_object( $file ) && !$file->isLocal() ) ) {
- $rarticle->setRedirectedFrom( $title );
- $article = $rarticle;
- $title = $target;
- $output->setTitle( $title );
- }
- }
- } else {
- $title = $article->getTitle();
- }
- }
- wfProfileOut( __METHOD__ );
- return $article;
- }
-
- /**
- * Cleaning up request by doing:
- ** deferred updates, DB transaction, and the output
- *
- * @param $output OutputPage
- */
- function finalCleanup( &$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
- wfDoUpdates( true );
- $this->doJobs();
- wfProfileOut( __METHOD__ );
- }
-
- /**
- * Do a job from the job queue
- */
- function doJobs() {
- $jobRunRate = $this->getVal( 'JobRunRate' );
-
- if( $jobRunRate <= 0 || wfReadOnly() ) {
- return;
- }
- if( $jobRunRate < 1 ) {
- $max = mt_getrandmax();
- if( mt_rand( 0, $max ) > $max * $jobRunRate ) {
- return;
- }
- $n = 1;
- } else {
- $n = intval( $jobRunRate );
- }
-
- while ( $n-- && false != ( $job = Job::pop() ) ) {
- $output = $job->toString() . "\n";
- $t = -wfTime();
- $success = $job->run();
- $t += wfTime();
- $t = round( $t*1000 );
- if( !$success ) {
- $output .= "Error: " . $job->getLastError() . ", Time: $t ms\n";
- } else {
- $output .= "Success, Time: $t ms\n";
- }
- wfDebugLog( 'jobqueue', $output );
- }
- }
-
- /**
- * Ends this task peacefully
- */
- 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 $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, $this ) ) ) {
- wfProfileOut( __METHOD__ );
- return;
- }
-
- $action = $this->getVal( 'Action' );
- if( in_array( $action, $this->getVal( 'DisabledActions', array() ) ) ) {
- /* No such action; this will switch to the default case */
- $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':
- case 'revert':
- case 'rollback':
- case 'protect':
- case 'unprotect':
- case 'info':
- case 'markpatrolled':
- case 'render':
- case 'deletetrackback':
- case 'purge':
- $article->$action();
- break;
- case 'print':
- $article->view();
- break;
- case 'dublincore':
- if( !$this->getVal( 'EnableDublinCoreRdf' ) ) {
- wfHttpError( 403, 'Forbidden', wfMsg( 'nodublincore' ) );
- } else {
- $rdf = new DublinCoreRdf( $article );
- $rdf->show();
- }
- break;
- case 'creativecommons':
- if( !$this->getVal( 'EnableCreativeCommonsRdf' ) ) {
- wfHttpError( 403, 'Forbidden', wfMsg( 'nocreativecommons' ) );
- } else {
- $rdf = new CreativeCommonsRdf( $article );
- $rdf->show();
- }
- break;
- case 'credits':
- Credits::showPage( $article );
- break;
- case 'submit':
- if( session_id() == '' ) {
- /* Send a cookie so anons get talk message notifications */
- wfSetupSession();
- }
- /* Continue... */
- case 'edit':
- case 'editredlink':
- if( wfRunHooks( 'CustomEditor', array( $article, $user ) ) ) {
- $internal = $request->getVal( 'internaledit' );
- $external = $request->getVal( 'externaledit' );
- $section = $request->getVal( 'section' );
- $oldid = $request->getVal( 'oldid' );
- if( !$this->getVal( 'UseExternalEditor' ) || $action=='submit' || $internal ||
- $section || $oldid || ( !$user->getOption( 'externaleditor' ) && !$external ) ) {
- $editor = new EditPage( $article );
- $editor->submit();
- } elseif( $this->getVal( 'UseExternalEditor' ) && ( $external || $user->getOption( 'externaleditor' ) ) ) {
- $mode = $request->getVal( 'mode' );
- $extedit = new ExternalEdit( $article, $mode );
- $extedit->edit();
- }
- }
- break;
- case 'history':
- if( $request->getFullRequestURL() == $title->getInternalURL( 'action=history' ) ) {
- $output->setSquidMaxage( $this->getVal( 'SquidMaxage' ) );
- }
- $history = new HistoryPage( $article );
- $history->history();
- break;
- case 'revisiondelete':
- // For show/hide submission from history page
- $special = SpecialPage::getPage( 'Revisiondelete' );
- $special->execute( '' );
- break;
- default:
- if( wfRunHooks( 'UnknownAction', array( $action, $article ) ) ) {
- $output->showErrorPage( 'nosuchaction', 'nosuchactiontext' );
- }
- }
- wfProfileOut( __METHOD__ );
-
- }
-
-}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff