api.php

   1 <?php
   2 /**
   3  * This file is the entry point for all API queries.
   4  *
   5  * It begins by checking whether the API is enabled on this wiki; if not,
   6  * it informs the user that s/he should set $wgEnableAPI to true and exits.
   7  * Otherwise, it constructs a new ApiMain using the parameter passed to it
   8  * as an argument in the URL ('?action=') and with write-enabled set to the
   9  * value of $wgEnableWriteAPI as specified in LocalSettings.php.
  10  * It then invokes "execute()" on the ApiMain object instance, which
  11  * produces output in the format specified in the URL.
  12  *
  13  * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License along
  26  * with this program; if not, write to the Free Software Foundation, Inc.,
  27  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  28  * http://www.gnu.org/copyleft/gpl.html
  29  *
  30  * @file
  31  */
  32
  33 use MediaWiki\Logger\LegacyLogger;
  34
  35 // So extensions (and other code) can check whether they're running in API mode
  36 define( 'MW_API', true );
  37
  38 // Bail on old versions of PHP, or if composer has not been run yet to install
  39 // dependencies. Using dirname( __FILE__ ) here because __DIR__ is PHP5.3+.
  40 require_once dirname( __FILE__ ) . '/includes/PHPVersionCheck.php';
  41 wfEntryPointCheck( 'api.php' );
  42
  43 require __DIR__ . '/includes/WebStart.php';
  44
  45 $starttime = microtime( true );
  46
  47 // URL safety checks
  48 if ( !$wgRequest->checkUrlExtension() ) {
  49         return;
  50 }
  51
  52 // Verify that the API has not been disabled
  53 if ( !$wgEnableAPI ) {
  54         header( $_SERVER['SERVER_PROTOCOL'] . ' 500 MediaWiki configuration Error', true, 500 );
  55         echo 'MediaWiki API is not enabled for this site. Add the following line to your LocalSettings.php'
  56                 . '<pre><b>$wgEnableAPI=true;</b></pre>';
  57         die( 1 );
  58 }
  59
  60 // Set a dummy $wgTitle, because $wgTitle == null breaks various things
  61 // In a perfect world this wouldn't be necessary
  62 $wgTitle = Title::makeTitle( NS_SPECIAL, 'Badtitle/dummy title for API calls set in api.php' );
  63
  64 // RequestContext will read from $wgTitle, but it will also whine about it.
  65 // In a perfect world this wouldn't be necessary either.
  66 RequestContext::getMain()->setTitle( $wgTitle );
  67
  68 try {
  69         /* Construct an ApiMain with the arguments passed via the URL. What we get back
  70          * is some form of an ApiMain, possibly even one that produces an error message,
  71          * but we don't care here, as that is handled by the ctor.
  72          */
  73         $processor = new ApiMain( RequestContext::getMain(), $wgEnableWriteAPI );
  74
  75         // Last chance hook before executing the API
  76         Hooks::run( 'ApiBeforeMain', array( &$processor ) );
  77         if ( !$processor instanceof ApiMain ) {
  78                 throw new MWException( 'ApiBeforeMain hook set $processor to a non-ApiMain class' );
  79         }
  80 } catch ( Exception $e ) {
  81         // Crap. Try to report the exception in API format to be friendly to clients.
  82         ApiMain::handleApiBeforeMainException( $e );
  83         $processor = false;
  84 }
  85
  86 // Process data & print results
  87 if ( $processor ) {
  88         $processor->execute();
  89 }
  90
  91 // Log what the user did, for book-keeping purposes.
  92 $endtime = microtime( true );
  93
  94 // Log the request
  95 if ( $wgAPIRequestLog ) {
  96         $items = array(
  97                 wfTimestamp( TS_MW ),
  98                 $endtime - $starttime,
  99                 $wgRequest->getIP(),
 100                 $wgRequest->getHeader( 'User-agent' )
 101         );
 102         $items[] = $wgRequest->wasPosted() ? 'POST' : 'GET';
 103         if ( $processor ) {
 104                 try {
 105                         $manager = $processor->getModuleManager();
 106                         $module = $manager->getModule( $wgRequest->getVal( 'action' ), 'action' );
 107                 } catch ( Exception $ex ) {
 108                         $module = null;
 109                 }
 110                 if ( !$module || $module->mustBePosted() ) {
 111                         $items[] = "action=" . $wgRequest->getVal( 'action' );
 112                 } else {
 113                         $items[] = wfArrayToCgi( $wgRequest->getValues() );
 114                 }
 115         } else {
 116                 $items[] = "failed in ApiBeforeMain";
 117         }
 118         LegacyLogger::emit( implode( ',', $items ) . "\n", $wgAPIRequestLog );
 119         wfDebug( "Logged API request to $wgAPIRequestLog\n" );
 120 }
 121
 122 $mediawiki = new MediaWiki();
 123 $mediawiki->doPostOutputShutdown( 'fast' );