index.php

   1 <?php
   2
   3 /**
   4  * This is the main web entry point for MediaWiki.
   5  *
   6  * If you are reading this in your web browser, your server is probably
   7  * not configured correctly to run PHP applications!
   8  *
   9  * See the README, INSTALL, and UPGRADE files for basic setup instructions
  10  * and pointers to the online documentation.
  11  *
  12  * http://www.mediawiki.org/
  13  *
  14  * ----------
  15  *
  16  * Copyright (C) 2001-2011 Magnus Manske, Brion Vibber, Lee Daniel Crocker,
  17  * Tim Starling, Erik Möller, Gabriel Wicke, Ævar Arnfjörð Bjarmason,
  18  * Niklas Laxström, Domas Mituzas, Rob Church, Yuri Astrakhan, Aryeh Gregor,
  19  * Aaron Schulz, Andrew Garrett, Raimond Spekking, Alexandre Emsenhuber
  20  * Siebrand Mazeland, Chad Horohoe, Roan Kattouw and others.
  21  *
  22  * This program is free software; you can redistribute it and/or modify
  23  * it under the terms of the GNU General Public License as published by
  24  * the Free Software Foundation; either version 2 of the License, or
  25  * (at your option) any later version.
  26  *
  27  * This program is distributed in the hope that it will be useful,
  28  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  29  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  30  * GNU General Public License for more details.
  31  *
  32  * You should have received a copy of the GNU General Public License along
  33  * with this program; if not, write to the Free Software Foundation, Inc.,
  34  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  35  * http://www.gnu.org/copyleft/gpl.html
  36  *
  37  * @file
  38  */
  39
  40 # Initialise common code
  41 require ( dirname( __FILE__ ) . '/includes/WebStart.php' );
  42
  43 wfProfileIn( 'index.php' );
  44 wfProfileIn( 'index.php-setup' );
  45
  46 # Initialize MediaWiki base class
  47 $mediaWiki = new MediaWiki( $wgRequest, $wgOut );
  48
  49 $maxLag = $wgRequest->getVal( 'maxlag' );
  50 if ( !is_null( $maxLag ) ) {
  51         list( $host, $lag ) = wfGetLB()->getMaxLag();
  52         if ( $lag > $maxLag ) {
  53                 wfMaxlagError( $host, $lag, $maxLag );
  54                 exit;
  55         }
  56 }
  57
  58 # Set title from request parameters
  59 $wgTitle = $mediaWiki->checkInitialQueries();
  60 $action = $wgRequest->getVal( 'action', 'view' );
  61
  62 wfProfileOut( 'index.php-setup' );
  63
  64 # Send Ajax requests to the Ajax dispatcher.
  65 if ( $wgUseAjax && $action == 'ajax' ) {
  66         $dispatcher = new AjaxDispatcher();
  67         $dispatcher->performAction();
  68         wfProfileOut( 'index.php' );
  69         $mediaWiki->restInPeace();
  70         exit;
  71 }
  72
  73 if ( $wgUseFileCache && $wgTitle !== null ) {
  74         wfProfileIn( 'index.php-filecache' );
  75         // Raw pages should handle cache control on their own,
  76         // even when using file cache. This reduces hits from clients.
  77         if ( $action != 'raw' && HTMLFileCache::useFileCache() ) {
  78                 /* Try low-level file cache hit */
  79                 $cache = new HTMLFileCache( $wgTitle, $action );
  80                 if ( $cache->isFileCacheGood( /* Assume up to date */ ) ) {
  81                         /* Check incoming headers to see if client has this cached */
  82                         if ( !$wgOut->checkLastModified( $cache->fileCacheTime() ) ) {
  83                                 $cache->loadFromFileCache();
  84                         }
  85                         # Do any stats increment/watchlist stuff
  86                         $wgArticle = MediaWiki::articleFromTitle( $wgTitle );
  87                         $wgArticle->viewUpdates();
  88                         # Tell $wgOut that output is taken care of
  89                         $wgOut->disable();
  90                         wfProfileOut( 'index.php-filecache' );
  91                         $mediaWiki->finalCleanup();
  92                         wfProfileOut( 'index.php' );
  93                         $mediaWiki->restInPeace();
  94                         exit;
  95                 }
  96         }
  97         wfProfileOut( 'index.php-filecache' );
  98 }
  99
 100 # Setting global variables in mediaWiki
 101 $mediaWiki->setVal( 'DisableHardRedirects', $wgDisableHardRedirects );
 102 $mediaWiki->setVal( 'EnableCreativeCommonsRdf', $wgEnableCreativeCommonsRdf );
 103 $mediaWiki->setVal( 'EnableDublinCoreRdf', $wgEnableDublinCoreRdf );
 104 $mediaWiki->setVal( 'Server', $wgServer );
 105 $mediaWiki->setVal( 'SquidMaxage', $wgSquidMaxage );
 106 $mediaWiki->setVal( 'UseExternalEditor', $wgUseExternalEditor );
 107 $mediaWiki->setVal( 'UsePathInfo', $wgUsePathInfo );
 108
 109 $mediaWiki->performRequestForTitle( $wgTitle, $wgArticle, $wgUser );
 110 $mediaWiki->finalCleanup();
 111
 112 wfProfileOut( 'index.php' );
 113
 114 $mediaWiki->restInPeace();