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, $mRequest;
  22
  23         function RawPage( &$article, $request = false ) {
  24                 global $wgRequest, $wgInputEncoding, $wgSquidMaxage, $wgJsMimeType;
  25
  26                 $allowedCTypes = array('text/x-wiki', $wgJsMimeType, 'text/css', 'application/x-zope-edit');
  27                 $this->mArticle =& $article;
  28                 $this->mTitle =& $article->mTitle;
  29
  30                 if ( $request === false ) {
  31                         $this->mRequest =& $wgRequest;
  32                 } else {
  33                         $this->mRequest = $request;
  34                 }
  35
  36                 $ctype = $this->mRequest->getText( 'ctype' );
  37                 $smaxage = $this->mRequest->getInt( 'smaxage', $wgSquidMaxage );
  38                 $maxage = $this->mRequest->getInt( 'maxage', $wgSquidMaxage );
  39                 $this->mOldId = $this->mRequest->getInt( 'oldid' );
  40                 # special case for 'generated' raw things: user css/js
  41                 $gen = $this->mRequest->getText( 'gen' );
  42                 if($gen == 'css') {
  43                         $this->mGen = $gen;
  44                         if($smaxage == '') $smaxage = $wgSquidMaxage;
  45                         if($ctype == '') $ctype = 'text/css';
  46                 } else if ($gen == 'js') {
  47                         $this->mGen = $gen;
  48                         if($smaxage == '') $smaxage = $wgSquidMaxage;
  49                         if($ctype == '') $ctype = $wgJsMimeType;
  50                 } else {
  51                         $this->mGen = false;
  52                 }
  53                 $this->mCharset = $wgInputEncoding;
  54                 $this->mSmaxage = $smaxage;
  55                 $this->mMaxage = $maxage;
  56                 if(empty($ctype) or !in_array($ctype, $allowedCTypes)) {
  57                         $this->mContentType = 'text/x-wiki';
  58                 } else {
  59                         $this->mContentType = $ctype;
  60                 }
  61         }
  62
  63         function view() {
  64                 global $wgOut, $wgScript;
  65
  66                 if( isset( $_SERVER['SCRIPT_URL'] ) ) {
  67                         # Normally we use PHP_SELF to get the URL to the script
  68                         # as it was called, minus the query string.
  69                         #
  70                         # Some sites use Apache rewrite rules to handle subdomains,
  71                         # and have PHP set up in a weird way that causes PHP_SELF
  72                         # to contain the rewritten URL instead of the one that the
  73                         # outside world sees.
  74                         #
  75                         # If in this mode, use SCRIPT_URL instead, which mod_rewrite
  76                         # provides containing the "before" URL.
  77                         $url = $_SERVER['SCRIPT_URL'];
  78                 } else {
  79                         $url = $_SERVER['PHP_SELF'];
  80                 }
  81                 if( strcmp( $wgScript, $url ) ) {
  82                         # Internet Explorer will ignore the Content-Type header if it
  83                         # thinks it sees a file extension it recognizes. Make sure that
  84                         # all raw requests are done through the script node, which will
  85                         # have eg '.php' and should remain safe.
  86                         #
  87                         # We used to redirect to a canonical-form URL as a general
  88                         # backwards-compatibility / good-citizen nice thing. However
  89                         # a lot of servers are set up in buggy ways, resulting in
  90                         # redirect loops which hang the browser until the CSS load
  91                         # times out.
  92                         #
  93                         # Just return a 403 Forbidden and get it over with.
  94                         wfHttpError( 403, 'Forbidden',
  95                                 'Raw pages must be accessed through the primary script entry point.' );
  96                         return;
  97                 }
  98
  99                 header( "Content-type: ".$this->mContentType.'; charset='.$this->mCharset );
 100                 # allow the client to cache this for 24 hours
 101                 header( 'Cache-Control: s-maxage='.$this->mSmaxage.', max-age='.$this->mMaxage );
 102                 echo $this->getRawText();
 103                 $wgOut->disable();
 104         }
 105
 106         function getRawText() {
 107                 global $wgUser, $wgOut;
 108                 if($this->mGen) {
 109                         $sk = $wgUser->getSkin();
 110                         $sk->initPage($wgOut);
 111                         if($this->mGen == 'css') {
 112                                 return $sk->getUserStylesheet();
 113                         } else if($this->mGen == 'js') {
 114                                 return $sk->getUserJs();
 115                         }
 116                 } else {
 117                         return $this->getArticleText();
 118                 }
 119         }
 120
 121         function getArticleText () {
 122                 if( $this->mTitle ) {
 123                         # Special case for MediaWiki: messages; we can hit the message cache.
 124                         if( $this->mTitle->getNamespace() == NS_MEDIAWIKI) {
 125                                 $rawtext = wfMsgForContent( $this->mTitle->getDbkey() );
 126                                 return $rawtext;
 127                         }
 128
 129                         # else get it from the DB
 130                         $rev = Revision::newFromTitle( $this->mTitle, $this->mOldId );
 131                         if( $rev ) {
 132                                 $lastmod = wfTimestamp( TS_RFC2822, $rev->getTimestamp() );
 133                                 header( 'Last-modified: ' . $lastmod );
 134                                 return $rev->getText();
 135                         }
 136                 }
 137
 138                 # Bad title or page does not exist
 139                 if( $this->mContentType == 'text/x-wiki' ) {
 140                         # Don't return a 404 response for CSS or JavaScript;
 141                         # 404s aren't generally cached and it would create
 142                         # extra hits when user CSS/JS are on and the user doesn't
 143                         # have the pages.
 144                         header( "HTTP/1.0 404 Not Found" );
 145                 }
 146                 return '';
 147         }
 148 }
 149 ?>