index.php

   1 <?php
   2 /**
   3  * This is the main web entry point for MediaWiki.
   4  *
   5  * If you are reading this in your web browser, your server is probably
   6  * not configured correctly to run PHP applications!
   7  *
   8  * See the README, INSTALL, and UPGRADE files for basic setup instructions
   9  * and pointers to the online documentation.
  10  *
  11  * http://www.mediawiki.org/
  12  *
  13  * ----------
  14  *
  15  * Copyright (C) 2001-2011 Magnus Manske, Brion Vibber, Lee Daniel Crocker,
  16  * Tim Starling, Erik Möller, Gabriel Wicke, Ævar Arnfjörð Bjarmason,
  17  * Niklas Laxström, Domas Mituzas, Rob Church, Yuri Astrakhan, Aryeh Gregor,
  18  * Aaron Schulz, Andrew Garrett, Raimond Spekking, Alexandre Emsenhuber
  19  * Siebrand Mazeland, Chad Horohoe, Roan Kattouw and others.
  20  *
  21  * This program is free software; you can redistribute it and/or modify
  22  * it under the terms of the GNU General Public License as published by
  23  * the Free Software Foundation; either version 2 of the License, or
  24  * (at your option) any later version.
  25  *
  26  * This program is distributed in the hope that it will be useful,
  27  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  28  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  29  * GNU General Public License for more details.
  30  *
  31  * You should have received a copy of the GNU General Public License along
  32  * with this program; if not, write to the Free Software Foundation, Inc.,
  33  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  34  * http://www.gnu.org/copyleft/gpl.html
  35  *
  36  * @file
  37  */
  38
  39 // Bail on old versions of PHP.  Pretty much every other file in the codebase
  40 // has structures (try/catch, foo()->bar(), etc etc) which throw parse errors in PHP 4.
  41 // Setup.php and ObjectCache.php have structures invalid in PHP 5.0 and 5.1, respectively.
  42 if ( !function_exists( 'version_compare' ) || version_compare( phpversion(), '5.2.3' ) < 0 ) {
  43         $phpversion = htmlspecialchars( phpversion() );
  44         $errorMsg = <<<ENDL
  45                 <p>
  46                         MediaWiki requires PHP 5.2.3 or higher. You are running PHP $phpversion.
  47                 </p>
  48                 <p>
  49                         Please consider <a href="http://www.php.net/downloads.php">upgrading your copy of PHP</a>.
  50                         PHP versions less than 5.3.0 are no longer supported by the PHP Group and will not receive
  51                         security or bugfix updates.
  52                 </p>
  53                 <p>
  54                         If for some reason you are unable to upgrade your PHP version, you will need to
  55                         <a href="http://www.mediawiki.org/wiki/Download">download</a> an older version
  56                         of MediaWiki from our website.  See our
  57                         <a href="http://www.mediawiki.org/wiki/Compatibility#PHP">compatibility page</a>
  58                         for details of which versions are compatible with prior versions of PHP.
  59                 </p>
  60 ENDL;
  61         wfDie( $errorMsg );
  62 }
  63
  64 # Initialise common code.  This gives us access to GlobalFunctions, the AutoLoader, and
  65 # the globals $wgRequest, $wgOut, $wgUser, $wgLang and $wgContLang, amongst others; it
  66 # does *not* load $wgTitle
  67 if ( isset( $_SERVER['MW_COMPILED'] ) ) {
  68         require ( 'phase3/includes/WebStart.php' );
  69 } else {
  70         require ( dirname( __FILE__ ) . '/includes/WebStart.php' );
  71 }
  72
  73 $mediaWiki = new MediaWiki();
  74 $mediaWiki->run();
  75
  76 /**
  77  * Display something vaguely comprehensible in the event of a totally unrecoverable error.
  78  * Does not assume access to *anything*; no globals, no autloader, no database, no localisation.
  79  * Safe for PHP4 (and putting this here means that WebStart.php and GlobalSettings.php
  80  * no longer need to be).
  81  *
  82  * Calling this function kills execution immediately.
  83  *
  84  * @param $errorMsg String fully-escaped HTML
  85  */
  86 function wfDie( $errorMsg ){
  87         // Use the version set in DefaultSettings if possible, but don't rely on it
  88         global $wgVersion, $wgLogo;
  89         $version = isset( $wgVersion ) && $wgVersion
  90                 ? htmlspecialchars( $wgVersion )
  91                 : '';
  92
  93         $script = $_SERVER['SCRIPT_NAME'];
  94         $path = pathinfo( $script, PATHINFO_DIRNAME ) . '/';
  95         $path = str_replace( '//', '/', $path );
  96
  97         $logo = isset( $wgLogo ) && $wgLogo
  98                 ? $wgLogo
  99                 : $path . 'skins/common/images/mediawiki.png';
 100         $encLogo = htmlspecialchars( $logo );
 101
 102         header( $_SERVER['SERVER_PROTOCOL'] . ' 500 MediaWiki configuration Error', true, 500 );
 103         header( 'Content-type: text/html; charset=UTF-8' );
 104         // Don't cache error pages!  They cause no end of trouble...
 105         header( 'Cache-control: none' );
 106         header( 'Pragma: nocache' );
 107
 108         ?>
 109 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 110 <html xmlns='http://www.w3.org/1999/xhtml' lang='en'>
 111         <head>
 112                 <title>MediaWiki <?php echo $version; ?></title>
 113                 <meta http-equiv='Content-Type' content='text/html; charset=utf-8' />
 114                 <style type='text/css' media='screen'>
 115                         body {
 116                                 color: #000;
 117                                 background-color: #fff;
 118                                 font-family: sans-serif;
 119                                 padding: 2em;
 120                                 text-align: center;
 121                         }
 122                         p, img, h1 {
 123                                 text-align: left;
 124                                 margin: 0.5em 0;
 125                         }
 126                         h1 {
 127                                 font-size: 120%;
 128                         }
 129                 </style>
 130         </head>
 131         <body>
 132                 <img src="<?php echo $encLogo; ?>" alt='The MediaWiki logo' />
 133                 <h1>MediaWiki <?php echo $version; ?> internal error</h1>
 134                 <div class='error'> <?php echo $errorMsg; ?> </div>
 135         </body>
 136 </html>
 137         <?php
 138         die( 1 );
 139 }