api.php

   1 <?php
   2 /**
   3  * This file is the entry point for all API queries.
   4  *
   5  * It begins by constructing a new ApiMain using the parameter passed to it
   6  * as an argument in the URL ('?action='). It then invokes "execute()" on the
   7  * ApiMain object instance, which produces output in the format specified in
   8  * the URL.
   9  *
  10  * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License along
  23  * with this program; if not, write to the Free Software Foundation, Inc.,
  24  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  25  * http://www.gnu.org/copyleft/gpl.html
  26  *
  27  * @file
  28  */
  29
  30 use MediaWiki\Logger\LegacyLogger;
  31
  32 // So extensions (and other code) can check whether they're running in API mode
  33 define( 'MW_API', true );
  34
  35 require __DIR__ . '/includes/WebStart.php';
  36
  37 $starttime = microtime( true );
  38
  39 // URL safety checks
  40 if ( !$wgRequest->checkUrlExtension() ) {
  41         return;
  42 }
  43
  44 // PATH_INFO can be used for stupid things. We don't support it for api.php at
  45 // all, so error out if it's present.
  46 if ( isset( $_SERVER['PATH_INFO'] ) && $_SERVER['PATH_INFO'] != '' ) {
  47         $correctUrl = wfAppendQuery( wfScript( 'api' ), $wgRequest->getQueryValues() );
  48         $correctUrl = wfExpandUrl( $correctUrl, PROTO_CANONICAL );
  49         header( "Location: $correctUrl", true, 301 );
  50         echo 'This endpoint does not support "path info", i.e. extra text between "api.php"'
  51                 . 'and the "?". Remove any such text and try again.';
  52         die( 1 );
  53 }
  54
  55 // Set a dummy $wgTitle, because $wgTitle == null breaks various things
  56 // In a perfect world this wouldn't be necessary
  57 $wgTitle = Title::makeTitle( NS_SPECIAL, 'Badtitle/dummy title for API calls set in api.php' );
  58
  59 // RequestContext will read from $wgTitle, but it will also whine about it.
  60 // In a perfect world this wouldn't be necessary either.
  61 RequestContext::getMain()->setTitle( $wgTitle );
  62
  63 try {
  64         /* Construct an ApiMain with the arguments passed via the URL. What we get back
  65          * is some form of an ApiMain, possibly even one that produces an error message,
  66          * but we don't care here, as that is handled by the constructor.
  67          */
  68         $processor = new ApiMain( RequestContext::getMain(), true );
  69
  70         // Last chance hook before executing the API
  71         Hooks::run( 'ApiBeforeMain', [ &$processor ] );
  72         if ( !$processor instanceof ApiMain ) {
  73                 throw new MWException( 'ApiBeforeMain hook set $processor to a non-ApiMain class' );
  74         }
  75 } catch ( Exception $e ) { // @todo Remove this block when HHVM is no longer supported
  76         // Crap. Try to report the exception in API format to be friendly to clients.
  77         ApiMain::handleApiBeforeMainException( $e );
  78         $processor = false;
  79 } catch ( Throwable $e ) {
  80         // Crap. Try to report the exception in API format to be friendly to clients.
  81         ApiMain::handleApiBeforeMainException( $e );
  82         $processor = false;
  83 }
  84
  85 // Process data & print results
  86 if ( $processor ) {
  87         $processor->execute();
  88 }
  89
  90 // Log what the user did, for book-keeping purposes.
  91 $endtime = microtime( true );
  92
  93 // Log the request
  94 if ( $wgAPIRequestLog ) {
  95         $items = [
  96                 wfTimestamp( TS_MW ),
  97                 $endtime - $starttime,
  98                 $wgRequest->getIP(),
  99                 $wgRequest->getHeader( 'User-agent' )
 100         ];
 101         $items[] = $wgRequest->wasPosted() ? 'POST' : 'GET';
 102         if ( $processor ) {
 103                 try {
 104                         $manager = $processor->getModuleManager();
 105                         $module = $manager->getModule( $wgRequest->getVal( 'action' ), 'action' );
 106                 } catch ( Exception $ex ) { // @todo Remove this block when HHVM is no longer supported
 107                         $module = null;
 108                 } catch ( Throwable $ex ) {
 109                         $module = null;
 110                 }
 111                 if ( !$module || $module->mustBePosted() ) {
 112                         $items[] = "action=" . $wgRequest->getVal( 'action' );
 113                 } else {
 114                         $items[] = wfArrayToCgi( $wgRequest->getValues() );
 115                 }
 116         } else {
 117                 $items[] = "failed in ApiBeforeMain";
 118         }
 119         LegacyLogger::emit( implode( ',', $items ) . "\n", $wgAPIRequestLog );
 120         wfDebug( "Logged API request to $wgAPIRequestLog\n" );
 121 }
 122
 123 $mediawiki = new MediaWiki();
 124 $mediawiki->doPostOutputShutdown( 'fast' );