includes/RawPage.php

   1 <?php
   2 /**
   3  * Copyright (C) 2004 Gabriel Wicke <gw@wikidev.net>
   4  * http://www.aulinx.de/
   5  * Based on PageHistory and SpecialExport
   6  *
   7  * License: GPL (http://www.gnu.org/copyleft/gpl.html)
   8  *
   9  * @author Gabriel Wicke <gw@wikidev.net>
  10  * @package MediaWiki
  11  */
  12
  13 /** */
  14 require_once( 'Revision.php' );
  15
  16 /**
  17  * @todo document
  18  * @package MediaWiki
  19  */
  20 class RawPage {
  21         var $mArticle, $mTitle, $mRequest;
  22         var $mOldId, $mGen, $mCharset;
  23         var $mSmaxage, $mMaxage;
  24         var $mContentType, $mExpandTemplates;
  25
  26         function RawPage( &$article, $request = false ) {
  27                 global $wgRequest, $wgInputEncoding, $wgSquidMaxage, $wgJsMimeType;
  28
  29                 $allowedCTypes = array('text/x-wiki', $wgJsMimeType, 'text/css', 'application/x-zope-edit');
  30                 $this->mArticle =& $article;
  31                 $this->mTitle =& $article->mTitle;
  32
  33                 if ( $request === false ) {
  34                         $this->mRequest =& $wgRequest;
  35                 } else {
  36                         $this->mRequest = $request;
  37                 }
  38
  39                 $ctype = $this->mRequest->getVal( 'ctype' );
  40                 $smaxage = $this->mRequest->getIntOrNull( 'smaxage', $wgSquidMaxage );
  41                 $maxage = $this->mRequest->getInt( 'maxage', $wgSquidMaxage );
  42                 $this->mExpandTemplates = $this->mRequest->getVal( 'templates' ) === 'expand';
  43
  44                 $oldid = $this->mRequest->getInt( 'oldid' );
  45                 switch ( $wgRequest->getText( 'direction' ) ) {
  46                         case 'next':
  47                                 $oldid = $this->mTitle->getNextRevisionId( $oldid );
  48                                 break;
  49                         case 'prev':
  50                                 $oldid = $this->mTitle->getPreviousRevisionId( $oldid );
  51                                 break;
  52                         case 'cur':
  53                                 $oldid = 0;
  54                                 break;
  55                 }
  56                 $this->mOldId = $oldid;
  57
  58                 # special case for 'generated' raw things: user css/js
  59                 $gen = $this->mRequest->getVal( 'gen' );
  60
  61                 if($gen == 'css') {
  62                         $this->mGen = $gen;
  63                         if( is_null( $smaxage ) ) $smaxage = $wgSquidMaxage;
  64                         if($ctype == '') $ctype = 'text/css';
  65                 } elseif ($gen == 'js') {
  66                         $this->mGen = $gen;
  67                         if( is_null( $smaxage ) ) $smaxage = $wgSquidMaxage;
  68                         if($ctype == '') $ctype = $wgJsMimeType;
  69                 } else {
  70                         $this->mGen = false;
  71                 }
  72                 $this->mCharset = $wgInputEncoding;
  73                 $this->mSmaxage = intval( $smaxage );
  74                 $this->mMaxage = $maxage;
  75                 if ( $ctype == '' or ! in_array( $ctype, $allowedCTypes ) ) {
  76                         $this->mContentType = 'text/x-wiki';
  77                 } else {
  78                         $this->mContentType = $ctype;
  79                 }
  80         }
  81
  82         function view() {
  83                 global $wgOut, $wgScript;
  84
  85                 if( isset( $_SERVER['SCRIPT_URL'] ) ) {
  86                         # Normally we use PHP_SELF to get the URL to the script
  87                         # as it was called, minus the query string.
  88                         #
  89                         # Some sites use Apache rewrite rules to handle subdomains,
  90                         # and have PHP set up in a weird way that causes PHP_SELF
  91                         # to contain the rewritten URL instead of the one that the
  92                         # outside world sees.
  93                         #
  94                         # If in this mode, use SCRIPT_URL instead, which mod_rewrite
  95                         # provides containing the "before" URL.
  96                         $url = $_SERVER['SCRIPT_URL'];
  97                 } else {
  98                         $url = $_SERVER['PHP_SELF'];
  99                 }
 100
 101                 $ua = @$_SERVER['HTTP_USER_AGENT'];
 102                 if( strcmp( $wgScript, $url ) && strpos( $ua, 'MSIE' ) !== false ) {
 103                         # Internet Explorer will ignore the Content-Type header if it
 104                         # thinks it sees a file extension it recognizes. Make sure that
 105                         # all raw requests are done through the script node, which will
 106                         # have eg '.php' and should remain safe.
 107                         #
 108                         # We used to redirect to a canonical-form URL as a general
 109                         # backwards-compatibility / good-citizen nice thing. However
 110                         # a lot of servers are set up in buggy ways, resulting in
 111                         # redirect loops which hang the browser until the CSS load
 112                         # times out.
 113                         #
 114                         # Just return a 403 Forbidden and get it over with.
 115                         wfHttpError( 403, 'Forbidden',
 116                                 'Raw pages must be accessed through the primary script entry point.' );
 117                         return;
 118                 }
 119
 120                 header( "Content-type: ".$this->mContentType.'; charset='.$this->mCharset );
 121                 # allow the client to cache this for 24 hours
 122                 header( 'Cache-Control: s-maxage='.$this->mSmaxage.', max-age='.$this->mMaxage );
 123                 echo $this->getRawText();
 124                 $wgOut->disable();
 125         }
 126
 127         function getRawText() {
 128                 global $wgUser, $wgOut;
 129                 if($this->mGen) {
 130                         $sk = $wgUser->getSkin();
 131                         $sk->initPage($wgOut);
 132                         if($this->mGen == 'css') {
 133                                 return $sk->getUserStylesheet();
 134                         } else if($this->mGen == 'js') {
 135                                 return $sk->getUserJs();
 136                         }
 137                 } else {
 138                         return $this->getArticleText();
 139                 }
 140         }
 141
 142         function getArticleText() {
 143                 global $wgParser;
 144
 145                 if( $this->mTitle ) {
 146                         $text = '';
 147
 148                         // If it's a MediaWiki message we can just hit the message cache
 149                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 150                                 $text = wfMsgForContentNoTrans( $this->mTitle->getDbkey() );
 151                         } else {
 152                                 // Get it from the DB
 153                                 $rev = Revision::newFromTitle( $this->mTitle, $this->mOldId );
 154                                 if ( $rev ) {
 155                                         $lastmod = wfTimestamp( TS_RFC2822, $rev->getTimestamp() );
 156                                         header( "Last-modified: $lastmod" );
 157                                         $text = $rev->isDeleted() ? '' : $rev->getText();
 158                                 } else
 159                                         $text = '';
 160                         }
 161
 162                         return $this->parseArticleText( $text );
 163                 }
 164
 165                 # Bad title or page does not exist
 166                 if( $this->mContentType == 'text/x-wiki' ) {
 167                         # Don't return a 404 response for CSS or JavaScript;
 168                         # 404s aren't generally cached and it would create
 169                         # extra hits when user CSS/JS are on and the user doesn't
 170                         # have the pages.
 171                         header( "HTTP/1.0 404 Not Found" );
 172                 }
 173                 return '';
 174         }
 175
 176         function parseArticleText( $text ) {
 177                 if ( $text === '' )
 178                         return '';
 179                 else
 180                         if ( $this->mExpandTemplates ) {
 181                                 global $wgTitle;
 182
 183                                 $parser = new Parser();
 184                                 $parser->Options( new ParserOptions() ); // We don't want this to be user-specific
 185                                 $parser->Title( $wgTitle );
 186                                 $parser->OutputType( OT_HTML );
 187
 188                                 return $parser->replaceVariables( $text );
 189                         } else
 190                                 return $text;
 191         }
 192 }
 193 ?>