<?php
+/**
+ * MediaWiki is the to-be base class for this whole project
+ */
class MediaWiki {
- var $params = array () ;
+ var $GET; /* Stores the $_GET variables at time of creation, can be changed */
+ var $params = array();
- function setVal ( $key , &$value ) {
- $this->param[strtolower($key)] = $value ;
+ /**
+ * Constructor
+ */
+ function MediaWiki () {
+ $this->GET = $_GET;
}
- function getVal ( $key , $default = "" ) {
- $key = strtolower ( $key ) ;
- if ( isset ( $this->params[$key] ) ) {
- return $this->params[$key] ;
+ /**
+ * Stores key/value pairs to circumvent global variables
+ * Note that keys are case-insensitive!
+ */
+ function setVal( $key, &$value ) {
+ $key = strtolower( $key );
+ $this->params[$key] =& $value;
+ }
+
+ /**
+ * Retieves key/value pairs to circumvent global variables
+ * Note that keys are case-insensitive!
+ */
+ function getVal( $key, $default = '' ) {
+ $key = strtolower( $key );
+ if( isset( $this->params[$key] ) ) {
+ return $this->params[$key];
+ }
+ return $default;
+ }
+
+ /**
+ * Initialization of ... everything
+ @return Article either the object to become $wgArticle, or NULL
+ */
+ function initialize ( &$title, &$output, &$user, $request) {
+ wfProfileIn( 'MediaWiki::initialize' );
+ $this->preliminaryChecks ( $title, $output, $request ) ;
+ $article = NULL;
+ if ( !$this->initializeSpecialCases( $title, $output, $request ) ) {
+ $article = $this->initializeArticle( $title, $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;
+ }
+
+ /**
+ * 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);
+
+ $search = $request->getText( 'search' );
+ if( !is_null( $search ) && $search !== '' ) {
+ // Compatibility with old search URLs which didn't use Special:Search
+ // Do this above the read whitelist check for security...
+ $title = Title::makeTitle( NS_SPECIAL, '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
+ # catch special pages etc. We check again in Article::view())
+ if ( !is_null( $title ) && !$title->userCanRead() ) {
+ $output->loginToUse();
+ $output->output();
+ exit;
+ }
+
+ }
+
+ /**
+ * Initialize the object to be known as $wgArticle for special cases
+ */
+ function initializeSpecialCases ( &$title, &$output, $request ) {
+
+ wfProfileIn( 'MediaWiki::initializeSpecialCases' );
+
+ $search = $this->getVal('Search');
+ $action = $this->getVal('Action');
+ if( !$this->getVal('DisableInternalSearch') && !is_null( $search ) && $search !== '' ) {
+ require_once( 'includes/SpecialSearch.php' );
+ $title = Title::makeTitle( NS_SPECIAL, 'Search' );
+ wfSpecialSearch();
+ } else if( !$title or $title->getDBkey() == '' ) {
+ $title = Title::newFromText( wfMsgForContent( 'badtitle' ) );
+ $output->errorpage( 'badtitle', 'badtitletext' );
+ } else if ( $title->getInterwiki() != '' ) {
+ if( $rdfrom = $request->getVal( 'rdfrom' ) ) {
+ $url = $title->getFullURL( 'rdfrom=' . urlencode( $rdfrom ) );
+ } else {
+ $url = $title->getFullURL();
+ }
+ /* Check for a redirect loop */
+ if ( !preg_match( '/^' . preg_quote( $this->getVal('Server'), '/' ) . '/', $url ) && $title->isLocal() ) {
+ $output->redirect( $url );
+ } else {
+ $title = Title::newFromText( wfMsgForContent( 'badtitle' ) );
+ $output->errorpage( 'badtitle', 'badtitletext' );
+ }
+ } else if ( ( $action == 'view' ) &&
+ (!isset( $this->GET['title'] ) || $title->getPrefixedDBKey() != $this->GET['title'] ) &&
+ !count( array_diff( array_keys( $this->GET ), array( 'action', 'title' ) ) ) )
+ {
+ /* Redirect to canonical url, make it a 301 to allow caching */
+ $output->setSquidMaxage( 1200 );
+ $output->redirect( $title->getFullURL(), '301');
+ } 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( 'MediaWiki::initializeSpecialCases' );
+ return false;
+ }
+ /* Did match a special case */
+ wfProfileOut( 'MediaWiki::initializeSpecialCases' );
+ return true;
+ }
+
+ /**
+ * Create an Article object of the appropriate class for the given page.
+ * @param Title $title
+ * @return Article
+ */
+ function articleFromTitle( $title ) {
+ if( NS_MEDIA == $title->getNamespace() ) {
+ // FIXME: where should this go?
+ $title = Title::makeTitle( NS_IMAGE, $title->getDBkey() );
+ }
+
+ 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 );
+ }
+ }
+
+ /**
+ * 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;
+ }
+ }
+ 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;
+ }
}
- return $default ;
+ wfProfileOut( 'MediaWiki::initializeArticle' );
+ return $article;
}
- function performAction ( $action , &$output , &$article , &$title , &$user , &$request ) {
+ /**
+ * Cleaning up by doing deferred updates, calling loadbalancer and doing the output
+ */
+ function finalCleanup ( &$deferredUpdates, &$loadBalancer, &$output ) {
+ wfProfileIn( 'MediaWiki::finalCleanup' );
+ $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->commitAll();
+ $output->output();
+ wfProfileOut( 'MediaWiki::finalCleanup' );
+ }
+
+ /**
+ * Deferred updates aren't really deferred anymore. It's important to report errors to the
+ * user, and that means doing this before OutputPage::output(). Note that for page saves,
+ * the client will wait until the script exits anyway before following the redirect.
+ */
+ function doUpdates ( &$updates ) {
+ wfProfileIn( 'MediaWiki::doUpdates' );
+ foreach( $updates as $up ) {
+ $up->doUpdate();
+ }
+ wfProfileOut( 'MediaWiki::doUpdates' );
+ }
+
+ /**
+ * Do a job from the job queue
+ */
+ function doJobs() {
+ global $wgJobLogFile, $wgJobRunRate;
+
+ if ( $wgJobRunRate <= 0 ) {
+ return;
+ }
+ if ( $wgJobRunRate < 1 ) {
+ $max = mt_getrandmax();
+ if ( mt_rand( 0, $max ) > $max * $wgJobRunRate ) {
+ return;
+ }
+ $n = 1;
+ } else {
+ $n = intval( $wgJobRunRate );
+ }
+
+ require_once( 'JobQueue.php' );
+
+ while ( $n-- && false != ($job = Job::pop())) {
+ $output = $job->toString() . "\n";
+ if ( !$job->run() ) {
+ $output .= "Error: " . $job->getLastError() . "\n";
+ }
+ if ( $wgJobLogFile ) {
+ error_log( $output, 3, $wgJobLogFile );
+ }
+ }
+ }
+
+ /**
+ * Ends this task peacefully
+ */
+ function restInPeace ( &$loadBalancer ) {
+ wfProfileClose();
+ logProfilingData();
+ $loadBalancer->closeAll();
+ wfDebug( "Request ended normally\n" );
+ }
+
+ /**
+ * Perform one of the "standard" actions
+ */
+ function performAction( &$output, &$article, &$title, &$user, &$request ) {
+
+ wfProfileIn( 'MediaWiki::performAction' );
+
+ $action = $this->getVal('Action');
+ if( in_array( $action, $this->getVal('DisabledActions',array()) ) ) {
+ /* No such action; this will switch to the default case */
+ $action = 'nosuchaction';
+ }
+
switch( $action ) {
case 'view':
- $output->setSquidMaxage( $this->getVal('SquidMaxage') );
+ $output->setSquidMaxage( $this->getVal( 'SquidMaxage' ) );
$article->view();
break;
case 'watch':
$article->view();
break;
case 'dublincore':
- if( !$this->getVal('EnableDublinCoreRdf') ) {
+ if( !$this->getVal( 'EnableDublinCoreRdf' ) ) {
wfHttpError( 403, 'Forbidden', wfMsg( 'nodublincore' ) );
} else {
require_once( 'includes/Metadata.php' );
}
break;
case 'creativecommons':
- if( !$this->getVal('EnableCreativeCommonsRdf') ) {
- wfHttpError( 403, 'Forbidden', wfMsg('nocreativecommons') );
+ if( !$this->getVal( 'EnableCreativeCommonsRdf' ) ) {
+ wfHttpError( 403, 'Forbidden', wfMsg( 'nocreativecommons' ) );
} else {
require_once( 'includes/Metadata.php' );
wfCreativeCommonsRdf( $article );
showCreditsPage( $article );
break;
case 'submit':
- if( !$this->getVal('CommandLineMode') && !$request->checkSessionCookie() ) {
- # Send a cookie so anons get talk message notifications
+ if( !$this->getVal( 'CommandLineMode' ) && !$request->checkSessionCookie() ) {
+ /* Send a cookie so anons get talk message notifications */
User::SetupSession();
}
- # Continue...
+ /* Continue... */
case 'edit':
$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') && !$external)) {
+ if( !$this->getVal( 'UseExternalEditor' ) || $action=='submit' || $internal ||
+ $section || $oldid || ( !$user->getOption( 'externaleditor' ) && !$external ) ) {
require_once( 'includes/EditPage.php' );
$editor = new EditPage( $article );
$editor->submit();
- } elseif($this->getVal('UseExternalEditor') && ($external || $user->getOption('externaleditor'))) {
+ } elseif( $this->getVal( 'UseExternalEditor' ) && ( $external || $user->getOption( 'externaleditor' ) ) ) {
require_once( 'includes/ExternalEdit.php' );
$mode = $request->getVal( 'mode' );
$extedit = new ExternalEdit( $article, $mode );
}
break;
case 'history':
- if ($_SERVER['REQUEST_URI'] == $title->getInternalURL('action=history')) {
- $output->setSquidMaxage( $this->getVal('SquidMaxage') );
+ if( $_SERVER['REQUEST_URI'] == $title->getInternalURL( 'action=history' ) ) {
+ $output->setSquidMaxage( $this->getVal( 'SquidMaxage' ) );
}
require_once( 'includes/PageHistory.php' );
$history = new PageHistory( $article );
$raw->view();
break;
default:
- if (wfRunHooks('UnknownAction', array($action, $article))) {
+ if( wfRunHooks( 'UnknownAction', array( $action, $article ) ) ) {
$output->errorpage( 'nosuchaction', 'nosuchactiontext' );
}
}
+ wfProfileOut( 'MediaWiki::performAction' );
+
+
}
-} ; # End of class MediaWiki
+}; /* End of class MediaWiki */
?>
-