39ab3cfc9f
And while we're at it... update a random assortment of code using wfEmptyMsg to use the new wfMessage class and our exists/isBlank/isDisabled methods.
252 lines
7.3 KiB
PHP
252 lines
7.3 KiB
PHP
<?php
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/**
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* Raw page text accessor
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*
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* Copyright © 2004 Gabriel Wicke <wicke@wikidev.net>
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* http://wikidev.net/
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*
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* Based on HistoryPage and SpecialExport
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*
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* License: GPL (http://www.gnu.org/copyleft/gpl.html)
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*
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* @author Gabriel Wicke <wicke@wikidev.net>
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* @file
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*/
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/**
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* A simple method to retrieve the plain source of an article,
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* using "action=raw" in the GET request string.
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*/
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class RawPage {
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var $mArticle, $mTitle, $mRequest;
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var $mOldId, $mGen, $mCharset, $mSection;
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var $mSmaxage, $mMaxage;
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var $mContentType, $mExpandTemplates;
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function __construct( Article $article, $request = false ) {
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global $wgRequest, $wgInputEncoding, $wgSquidMaxage, $wgJsMimeType, $wgGroupPermissions;
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$allowedCTypes = array( 'text/x-wiki', $wgJsMimeType, 'text/css', 'application/x-zope-edit' );
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$this->mArticle = $article;
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$this->mTitle = $article->mTitle;
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if( $request === false ) {
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$this->mRequest = $wgRequest;
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} else {
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$this->mRequest = $request;
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}
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$ctype = $this->mRequest->getVal( 'ctype' );
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$smaxage = $this->mRequest->getIntOrNull( 'smaxage' );
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$maxage = $this->mRequest->getInt( 'maxage', $wgSquidMaxage );
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$this->mExpandTemplates = $this->mRequest->getVal( 'templates' ) === 'expand';
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$this->mUseMessageCache = $this->mRequest->getBool( 'usemsgcache' );
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$this->mSection = $this->mRequest->getIntOrNull( 'section' );
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$oldid = $this->mRequest->getInt( 'oldid' );
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switch( $wgRequest->getText( 'direction' ) ) {
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case 'next':
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# output next revision, or nothing if there isn't one
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if( $oldid ) {
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$oldid = $this->mTitle->getNextRevisionId( $oldid );
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}
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$oldid = $oldid ? $oldid : -1;
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break;
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case 'prev':
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# output previous revision, or nothing if there isn't one
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if( !$oldid ) {
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# get the current revision so we can get the penultimate one
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$this->mArticle->getTouched();
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$oldid = $this->mArticle->mLatest;
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}
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$prev = $this->mTitle->getPreviousRevisionId( $oldid );
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$oldid = $prev ? $prev : -1 ;
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break;
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case 'cur':
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$oldid = 0;
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break;
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}
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$this->mOldId = $oldid;
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# special case for 'generated' raw things: user css/js
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$gen = $this->mRequest->getVal( 'gen' );
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if( $gen == 'css' ) {
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$this->mGen = $gen;
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if( is_null( $smaxage ) ) {
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$smaxage = $wgSquidMaxage;
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}
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if( $ctype == '' ) {
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$ctype = 'text/css';
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}
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} elseif( $gen == 'js' ) {
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$this->mGen = $gen;
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if( is_null( $smaxage ) ) $smaxage = $wgSquidMaxage;
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if($ctype == '') $ctype = $wgJsMimeType;
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} else {
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$this->mGen = false;
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}
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$this->mCharset = $wgInputEncoding;
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# Force caching for CSS and JS raw content, default: 5 minutes
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if( is_null( $smaxage ) && ( $ctype == 'text/css' || $ctype == $wgJsMimeType ) ) {
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global $wgForcedRawSMaxage;
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$this->mSmaxage = intval( $wgForcedRawSMaxage );
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} else {
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$this->mSmaxage = intval( $smaxage );
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}
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$this->mMaxage = $maxage;
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# Output may contain user-specific data;
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# vary generated content for open sessions and private wikis
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if( $this->mGen || !$wgGroupPermissions['*']['read'] ) {
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$this->mPrivateCache = $this->mSmaxage == 0 || session_id() != '';
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} else {
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$this->mPrivateCache = false;
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}
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if( $ctype == '' || !in_array( $ctype, $allowedCTypes ) ) {
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$this->mContentType = 'text/x-wiki';
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} else {
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$this->mContentType = $ctype;
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}
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}
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function view() {
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global $wgOut, $wgRequest;
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if( $wgRequest->isPathInfoBad() ) {
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# Internet Explorer will ignore the Content-Type header if it
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# thinks it sees a file extension it recognizes. Make sure that
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# all raw requests are done through the script node, which will
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# have eg '.php' and should remain safe.
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#
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# We used to redirect to a canonical-form URL as a general
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# backwards-compatibility / good-citizen nice thing. However
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# a lot of servers are set up in buggy ways, resulting in
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# redirect loops which hang the browser until the CSS load
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# times out.
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#
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# Just return a 403 Forbidden and get it over with.
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wfHttpError( 403, 'Forbidden',
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'Invalid file extension found in PATH_INFO. ' .
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'Raw pages must be accessed through the primary script entry point.' );
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return;
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}
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header( 'Content-type: ' . $this->mContentType . '; charset=' . $this->mCharset );
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# allow the client to cache this for 24 hours
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$mode = $this->mPrivateCache ? 'private' : 'public';
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header( 'Cache-Control: ' . $mode . ', s-maxage=' . $this->mSmaxage . ', max-age=' . $this->mMaxage );
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global $wgUseFileCache;
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if( $wgUseFileCache && HTMLFileCache::useFileCache() ) {
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$cache = new HTMLFileCache( $this->mTitle, 'raw' );
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if( $cache->isFileCacheGood( /* Assume up to date */ ) ) {
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$cache->loadFromFileCache();
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$wgOut->disable();
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return;
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} else {
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ob_start( array( &$cache, 'saveToFileCache' ) );
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}
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}
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$text = $this->getRawText();
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if( !wfRunHooks( 'RawPageViewBeforeOutput', array( &$this, &$text ) ) ) {
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wfDebug( __METHOD__ . ": RawPageViewBeforeOutput hook broke raw page output.\n" );
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}
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echo $text;
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$wgOut->disable();
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}
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function getRawText() {
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global $wgUser, $wgOut;
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if( $this->mGen ) {
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$sk = $wgUser->getSkin();
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if( !StubObject::isRealObject( $wgOut ) ) {
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$wgOut->_unstub( 2 );
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}
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$sk->initPage( $wgOut );
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if( $this->mGen == 'css' ) {
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return $sk->generateUserStylesheet();
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} else if( $this->mGen == 'js' ) {
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return $sk->generateUserJs();
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}
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} else {
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return $this->getArticleText();
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}
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}
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function getArticleText() {
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$found = false;
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$text = '';
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if( $this->mTitle ) {
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// If it's a MediaWiki message we can just hit the message cache
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if( $this->mUseMessageCache && $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
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$key = $this->mTitle->getDBkey();
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$msg = wfMessage( $key )->inContentLanguage();
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# If the message doesn't exist, return a blank
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$text = !$msg->exists() ? '' : $msg->plain();
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$found = true;
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} else {
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// Get it from the DB
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$rev = Revision::newFromTitle( $this->mTitle, $this->mOldId );
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if( $rev ) {
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$lastmod = wfTimestamp( TS_RFC2822, $rev->getTimestamp() );
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header( "Last-modified: $lastmod" );
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if( !is_null( $this->mSection ) ) {
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global $wgParser;
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$text = $wgParser->getSection( $rev->getText(), $this->mSection );
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} else {
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$text = $rev->getText();
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}
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$found = true;
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}
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}
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}
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# Bad title or page does not exist
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if( !$found && $this->mContentType == 'text/x-wiki' ) {
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# Don't return a 404 response for CSS or JavaScript;
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# 404s aren't generally cached and it would create
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# extra hits when user CSS/JS are on and the user doesn't
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# have the pages.
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header( 'HTTP/1.0 404 Not Found' );
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}
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// Special-case for empty CSS/JS
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//
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// Internet Explorer for Mac handles empty files badly;
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// particularly so when keep-alive is active. It can lead
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// to long timeouts as it seems to sit there waiting for
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// more data that never comes.
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//
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// Give it a comment...
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if( strlen( $text ) == 0 &&
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( $this->mContentType == 'text/css' ||
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$this->mContentType == 'text/javascript' ) ) {
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return '/* Empty */';
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}
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return $this->parseArticleText( $text );
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}
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function parseArticleText( $text ) {
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if( $text === '' ) {
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return '';
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} else {
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if( $this->mExpandTemplates ) {
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global $wgParser;
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return $wgParser->preprocess( $text, $this->mTitle, new ParserOptions() );
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} else {
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return $text;
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}
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}
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}
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}
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