Don't require an existence check before calling loadPageData(). Added an accessor...
[lhc/web/wiklou.git] / includes / RawPage.php
index 2a806d8..119f0c9 100644 (file)
  * Copyright (C) 2004 Gabriel Wicke <gw@wikidev.net>
  * http://www.aulinx.de/
  * Based on PageHistory and SpecialExport
- * 
+ *
  * License: GPL (http://www.gnu.org/copyleft/gpl.html)
  *
  * @author Gabriel Wicke <gw@wikidev.net>
  * @package MediaWiki
  */
 
+/** */
+require_once( 'Revision.php' );
+
 /**
  * @todo document
  * @package MediaWiki
  */
 class RawPage {
+       var $mArticle, $mTitle, $mRequest;
+       var $mOldId, $mGen, $mCharset;
+       var $mSmaxage, $mMaxage;
+       var $mContentType, $mExpandTemplates;
+
+       function RawPage( &$article, $request = false ) {
+               global $wgRequest, $wgInputEncoding, $wgSquidMaxage, $wgJsMimeType;
 
-       function RawPage( $article ) {
-               global $wgRequest, $wgInputEncoding, $wgSquidMaxage;
-               $allowedCTypes = array('text/x-wiki', 'text/javascript', 'text/css', 'application/x-zope-edit');
+               $allowedCTypes = array('text/x-wiki', $wgJsMimeType, 'text/css', 'application/x-zope-edit');
                $this->mArticle =& $article;
                $this->mTitle =& $article->mTitle;
-                       
-               $ctype = $wgRequest->getText( 'ctype' );
-               $smaxage = $wgRequest->getInt( 'smaxage', $wgSquidMaxage );
-               $maxage = $wgRequest->getInt( 'maxage', $wgSquidMaxage );
-               $this->mOldId = $wgRequest->getInt( 'oldid' );
+
+               if ( $request === false ) {
+                       $this->mRequest =& $wgRequest;
+               } else {
+                       $this->mRequest = $request;
+               }
+
+               $ctype = $this->mRequest->getVal( 'ctype' );
+               $smaxage = $this->mRequest->getIntOrNull( 'smaxage', $wgSquidMaxage );
+               $maxage = $this->mRequest->getInt( 'maxage', $wgSquidMaxage );
+               $this->mExpandTemplates = $this->mRequest->getVal( 'templates' ) === 'expand';
+               
+               $oldid = $this->mRequest->getInt( 'oldid' );
+               switch ( $wgRequest->getText( 'direction' ) ) {
+                       case 'next':
+                               # output next revision, or nothing if there isn't one
+                               if ( $oldid ) {
+                                       $oldid = $this->mTitle->getNextRevisionId( $oldid );
+                               }
+                               $oldid = $oldid ? $oldid : -1;
+                               break;
+                       case 'prev':
+                               # output previous revision, or nothing if there isn't one
+                               if ( ! $oldid ) {
+                                       # get the current revision so we can get the penultimate one
+                                       $this->mArticle->getTouched();
+                                       $oldid = $this->mArticle->mLatest;
+                               }
+                               $prev = $this->mTitle->getPreviousRevisionId( $oldid );
+                               $oldid = $prev ? $prev : -1 ;
+                               break;
+                       case 'cur':
+                               $oldid = 0;
+                               break;
+               }
+               $this->mOldId = $oldid;
+               
                # special case for 'generated' raw things: user css/js
-               $gen = $wgRequest->getText( 'gen' );
+               $gen = $this->mRequest->getVal( 'gen' );
+
                if($gen == 'css') {
                        $this->mGen = $gen;
-                       if($smaxage == '') $smaxage = $wgSquidMaxage;
+                       if( is_null( $smaxage ) ) $smaxage = $wgSquidMaxage;
                        if($ctype == '') $ctype = 'text/css';
-               } else if ($gen == 'js') {
+               } elseif ($gen == 'js') {
                        $this->mGen = $gen;
-                       if($smaxage == '') $smaxage = $wgSquidMaxage;
-                       if($ctype == '') $ctype = 'text/javascript';
+                       if( is_null( $smaxage ) ) $smaxage = $wgSquidMaxage;
+                       if($ctype == '') $ctype = $wgJsMimeType;
                } else {
                        $this->mGen = false;
                }
                $this->mCharset = $wgInputEncoding;
-               $this->mSmaxage = $smaxage;
+               $this->mSmaxage = intval( $smaxage );
                $this->mMaxage = $maxage;
-               if(empty($ctype) or !in_array($ctype, $allowedCTypes)) {
+               if ( $ctype == '' or ! in_array( $ctype, $allowedCTypes ) ) {
                        $this->mContentType = 'text/x-wiki';
                } else {
                        $this->mContentType = $ctype;
                }
        }
-       
+
        function view() {
-               global $wgUser, $wgOut;
+               global $wgOut, $wgScript;
+
+               if( isset( $_SERVER['SCRIPT_URL'] ) ) {
+                       # Normally we use PHP_SELF to get the URL to the script
+                       # as it was called, minus the query string.
+                       #
+                       # Some sites use Apache rewrite rules to handle subdomains,
+                       # and have PHP set up in a weird way that causes PHP_SELF
+                       # to contain the rewritten URL instead of the one that the
+                       # outside world sees.
+                       #
+                       # If in this mode, use SCRIPT_URL instead, which mod_rewrite
+                       # provides containing the "before" URL.
+                       $url = $_SERVER['SCRIPT_URL'];
+               } else {
+                       $url = $_SERVER['PHP_SELF'];
+               }
+               
+               $ua = @$_SERVER['HTTP_USER_AGENT'];
+               if( strcmp( $wgScript, $url ) && strpos( $ua, 'MSIE' ) !== false ) {
+                       # Internet Explorer will ignore the Content-Type header if it
+                       # thinks it sees a file extension it recognizes. Make sure that
+                       # all raw requests are done through the script node, which will
+                       # have eg '.php' and should remain safe.
+                       #
+                       # We used to redirect to a canonical-form URL as a general
+                       # backwards-compatibility / good-citizen nice thing. However
+                       # a lot of servers are set up in buggy ways, resulting in
+                       # redirect loops which hang the browser until the CSS load
+                       # times out.
+                       #
+                       # Just return a 403 Forbidden and get it over with.
+                       wfHttpError( 403, 'Forbidden',
+                               'Raw pages must be accessed through the primary script entry point.' );
+                       return;
+               }
+
                header( "Content-type: ".$this->mContentType.'; charset='.$this->mCharset );
                # allow the client to cache this for 24 hours
                header( 'Cache-Control: s-maxage='.$this->mSmaxage.', max-age='.$this->mMaxage );
+               echo $this->getRawText();
+               $wgOut->disable();
+       }
+
+       function getRawText() {
+               global $wgUser, $wgOut;
                if($this->mGen) {
                        $sk = $wgUser->getSkin();
                        $sk->initPage($wgOut);
                        if($this->mGen == 'css') {
-                               echo $sk->getUserStylesheet();
+                               return $sk->getUserStylesheet();
                        } else if($this->mGen == 'js') {
-                               echo $sk->getUserJs();
+                               return $sk->getUserJs();
                        }
                } else {
-                       echo $this->getrawtext();
+                       return $this->getArticleText();
                }
-               $wgOut->disable();
        }
-       
-       function getrawtext () {
-               global $wgInputEncoding, $wgContLang;
-               $fname = 'RawPage::getrawtext';
-               
-               if( !$this->mTitle ) return '';
-               $dbr =& wfGetDB( DB_SLAVE );
-               extract( $dbr->tableNames( 'cur', 'old' ) );
-
-               $t = $dbr->strencode( $this->mTitle->getDBKey() );
-               $ns = $this->mTitle->getNamespace();
-               # special case
-               if($ns == NS_MEDIAWIKI) {
-                       $rawtext = wfMsg($t);
-                       return $rawtext;
+
+       function getArticleText() {
+               if( $this->mTitle ) {
+                       $text = '';
+
+                       // If it's a MediaWiki message we can just hit the message cache
+                       if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
+                               $text = wfMsgForContentNoTrans( $this->mTitle->getDbkey() );
+                       } else {
+                               // Get it from the DB
+                               $rev = Revision::newFromTitle( $this->mTitle, $this->mOldId );
+                               if ( $rev ) {
+                                       $lastmod = wfTimestamp( TS_RFC2822, $rev->getTimestamp() );
+                                       header( "Last-modified: $lastmod" );
+                                       $text = $rev->isDeleted() ? '' : $rev->getText();
+                               } else
+                                       $text = '';
+                       }
+
+                       return $this->parseArticleText( $text );
                }
-               # else get it from the DB
-               if(!empty($this->mOldId)) {
-                       $sql = "SELECT old_text AS text,old_timestamp AS timestamp,".
-                                   "old_user AS user,old_flags AS flags FROM $old " .
-                       "WHERE old_id={$this->mOldId}";
-               } else {
-                       $sql = "SELECT cur_id as id,cur_timestamp as timestamp,cur_user as user,cur_user_text as user_text," .
-                       "cur_restrictions as restrictions,cur_comment as comment,cur_text as text FROM $cur " .
-                       "WHERE cur_namespace=$ns AND cur_title='$t'";
+
+               # Bad title or page does not exist
+               if( $this->mContentType == 'text/x-wiki' ) {
+                       # Don't return a 404 response for CSS or JavaScript;
+                       # 404s aren't generally cached and it would create
+                       # extra hits when user CSS/JS are on and the user doesn't
+                       # have the pages.
+                       header( "HTTP/1.0 404 Not Found" );
                }
-               $res = $dbr->query( $sql, $fname );
-               if( $s = $dbr->fetchObject( $res ) ) {
-                       $rawtext = Article::getRevisionText( $s, "" );
-                       header( 'Last-modified: '.gmdate( "D, j M Y H:i:s", wfTimestamp2Unix( $s->timestamp )).' GMT' );
-                       return $rawtext;
-               } else {
+               return '';
+       }
+
+       function parseArticleText( $text ) {
+               if ( $text === '' )
                        return '';
-               }
+               else
+                       if ( $this->mExpandTemplates ) {
+                               global $wgTitle;
+
+                               $parser = new Parser();
+                               $parser->Options( new ParserOptions() ); // We don't want this to be user-specific
+                               $parser->Title( $wgTitle );
+                               $parser->OutputType( OT_HTML );
+
+                               return $parser->replaceVariables( $text );
+                       } else
+                               return $text;
        }
 }
 ?>