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                 $this->mOldId = $this->mRequest->getInt( 'oldid' );
  44                 # special case for 'generated' raw things: user css/js
  45                 $gen = $this->mRequest->getVal( 'gen' );
  46
  47                 if($gen == 'css') {
  48                         $this->mGen = $gen;
  49                         if( is_null( $smaxage ) ) $smaxage = $wgSquidMaxage;
  50                         if($ctype == '') $ctype = 'text/css';
  51                 } elseif ($gen == 'js') {
  52                         $this->mGen = $gen;
  53                         if( is_null( $smaxage ) ) $smaxage = $wgSquidMaxage;
  54                         if($ctype == '') $ctype = $wgJsMimeType;
  55                 } else {
  56                         $this->mGen = false;
  57                 }
  58                 $this->mCharset = $wgInputEncoding;
  59                 $this->mSmaxage = intval( $smaxage );
  60                 $this->mMaxage = $maxage;
  61                 if ( $ctype == '' or ! in_array( $ctype, $allowedCTypes ) ) {
  62                         $this->mContentType = 'text/x-wiki';
  63                 } else {
  64                         $this->mContentType = $ctype;
  65                 }
  66         }
  67
  68         function view() {
  69                 global $wgOut, $wgScript;
  70
  71                 if( isset( $_SERVER['SCRIPT_URL'] ) ) {
  72                         # Normally we use PHP_SELF to get the URL to the script
  73                         # as it was called, minus the query string.
  74                         #
  75                         # Some sites use Apache rewrite rules to handle subdomains,
  76                         # and have PHP set up in a weird way that causes PHP_SELF
  77                         # to contain the rewritten URL instead of the one that the
  78                         # outside world sees.
  79                         #
  80                         # If in this mode, use SCRIPT_URL instead, which mod_rewrite
  81                         # provides containing the "before" URL.
  82                         $url = $_SERVER['SCRIPT_URL'];
  83                 } else {
  84                         $url = $_SERVER['PHP_SELF'];
  85                 }
  86
  87                 $ua = @$_SERVER['HTTP_USER_AGENT'];
  88                 if( strcmp( $wgScript, $url ) && strpos( $ua, 'MSIE' ) !== false ) {
  89                         # Internet Explorer will ignore the Content-Type header if it
  90                         # thinks it sees a file extension it recognizes. Make sure that
  91                         # all raw requests are done through the script node, which will
  92                         # have eg '.php' and should remain safe.
  93                         #
  94                         # We used to redirect to a canonical-form URL as a general
  95                         # backwards-compatibility / good-citizen nice thing. However
  96                         # a lot of servers are set up in buggy ways, resulting in
  97                         # redirect loops which hang the browser until the CSS load
  98                         # times out.
  99                         #
 100                         # Just return a 403 Forbidden and get it over with.
 101                         wfHttpError( 403, 'Forbidden',
 102                                 'Raw pages must be accessed through the primary script entry point.' );
 103                         return;
 104                 }
 105
 106                 header( "Content-type: ".$this->mContentType.'; charset='.$this->mCharset );
 107                 # allow the client to cache this for 24 hours
 108                 header( 'Cache-Control: s-maxage='.$this->mSmaxage.', max-age='.$this->mMaxage );
 109                 echo $this->getRawText();
 110                 $wgOut->disable();
 111         }
 112
 113         function getRawText() {
 114                 global $wgUser, $wgOut;
 115                 if($this->mGen) {
 116                         $sk = $wgUser->getSkin();
 117                         $sk->initPage($wgOut);
 118                         if($this->mGen == 'css') {
 119                                 return $sk->getUserStylesheet();
 120                         } else if($this->mGen == 'js') {
 121                                 return $sk->getUserJs();
 122                         }
 123                 } else {
 124                         return $this->getArticleText();
 125                 }
 126         }
 127
 128         function getArticleText() {
 129                 global $wgParser;
 130
 131                 if( $this->mTitle ) {
 132                         $text = '';
 133
 134                         // If it's a MediaWiki message we can just hit the message cache
 135                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 136                                 $text = wfMsgForContentNoTrans( $this->mTitle->getDbkey() );
 137                         } else {
 138                                 // Get it from the DB
 139                                 $rev = Revision::newFromTitle( $this->mTitle, $this->mOldId );
 140                                 if ( $rev ) {
 141                                         $lastmod = wfTimestamp( TS_RFC2822, $rev->getTimestamp() );
 142                                         header( "Last-modified: $lastmod" );
 143                                         $text = $rev->isDeleted() ? '' : $rev->getText();
 144                                 } else
 145                                         $text = '';
 146                         }
 147
 148                         return $this->parseArticleText( $text );
 149                 }
 150
 151                 # Bad title or page does not exist
 152                 if( $this->mContentType == 'text/x-wiki' ) {
 153                         # Don't return a 404 response for CSS or JavaScript;
 154                         # 404s aren't generally cached and it would create
 155                         # extra hits when user CSS/JS are on and the user doesn't
 156                         # have the pages.
 157                         header( "HTTP/1.0 404 Not Found" );
 158                 }
 159                 return '';
 160         }
 161
 162         function parseArticleText( $text ) {
 163                 if ( $text === '' )
 164                         return '';
 165                 else
 166                         if ( $this->mExpandTemplates ) {
 167                                 global $wgTitle;
 168
 169                                 $parser = new Parser();
 170                                 $parser->Options( new ParserOptions() ); // We don't want this to be user-specific
 171                                 $parser->Title( $wgTitle );
 172                                 $parser->OutputType( OT_HTML );
 173
 174                                 return $parser->replaceVariables( $text );
 175                         } else
 176                                 return $text;
 177         }
 178 }
 179 ?>