load.php

   1 <?php
   2 /**
   3  * This file is the entry point for the resource loader.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @author Roan Kattouw
  22  * @author Trevor Parscal
  23  *
  24  */
  25
  26 // We want error messages to not be interpreted as CSS or JS
  27 function wfDie( $msg = '' ) {
  28         header( $_SERVER['SERVER_PROTOCOL'] . ' 500 MediaWiki configuration Error', true, 500 );
  29         echo "/* $msg */";
  30         die( 1 );
  31 }
  32
  33 // Die on unsupported PHP versions
  34 if( !function_exists( 'version_compare' ) || version_compare( phpversion(), '5.2.3' ) < 0 ){
  35         $version = htmlspecialchars( $wgVersion );
  36         wfDie( "MediaWiki $version requires at least PHP version 5.2.3." );
  37 }
  38
  39 if ( isset( $_SERVER['MW_COMPILED'] ) ) {
  40         require ( 'phase3/includes/WebStart.php' );
  41 } else {
  42         require ( dirname( __FILE__ ) . '/includes/WebStart.php' );
  43 }
  44
  45 wfProfileIn( 'load.php' );
  46
  47 // URL safety checks
  48 //
  49 // See RawPage.php for details; summary is that MSIE can override the
  50 // Content-Type if it sees a recognized extension on the URL, such as
  51 // might be appended via PATH_INFO after 'load.php'.
  52 //
  53 // Some resources can contain HTML-like strings (e.g. in messages)
  54 // which will end up triggering HTML detection and execution.
  55 //
  56 if ( $wgRequest->isPathInfoBad() ) {
  57         wfHttpError( 403, 'Forbidden',
  58                 'Invalid file extension found in PATH_INFO or QUERY_STRING.' );
  59         return;
  60 }
  61
  62 // Respond to resource loading request
  63 $resourceLoader = new ResourceLoader();
  64 $resourceLoader->respond( new ResourceLoaderContext( $resourceLoader, $wgRequest ) );
  65
  66 wfProfileOut( 'load.php' );
  67 wfLogProfilingData();
  68
  69 // Shut down the database.  foo()->bar() syntax is not supported in PHP4, and this file
  70 // needs to *parse* in PHP4, although we'll never get down here to worry about = vs =&
  71 $lb = wfGetLBFactory();
  72 $lb->shutdown();