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