includes/api/ApiPurge.php

   1 <?php
   2
   3 /**
   4  * API for MediaWiki 1.14+
   5  *
   6  * Created on Sep 2, 2008
   7  *
   8  * Copyright © 2008 Chad Horohoe
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  *
  25  * @file
  26  */
  27
  28 /**
  29  * API interface for page purging
  30  * @ingroup API
  31  */
  32 class ApiPurge extends ApiBase {
  33         private $mPageSet;
  34
  35         /**
  36          * Purges the cache of a page
  37          */
  38         public function execute() {
  39                 $params = $this->extractRequestParams();
  40
  41                 $continuationManager = new ApiContinuationManager( $this, array(), array() );
  42                 $this->setContinuationManager( $continuationManager );
  43
  44                 $forceLinkUpdate = $params['forcelinkupdate'];
  45                 $forceRecursiveLinkUpdate = $params['forcerecursivelinkupdate'];
  46                 $pageSet = $this->getPageSet();
  47                 $pageSet->execute();
  48
  49                 $result = $pageSet->getInvalidTitlesAndRevisions();
  50                 $user = $this->getUser();
  51
  52                 foreach ( $pageSet->getGoodTitles() as $title ) {
  53                         $r = array();
  54                         ApiQueryBase::addTitleInfo( $r, $title );
  55                         $page = WikiPage::factory( $title );
  56                         if ( !$user->pingLimiter( 'purge' ) ) {
  57                                 $page->doPurge(); // Directly purge and skip the UI part of purge().
  58                                 $r['purged'] = true;
  59                         } else {
  60                                 $error = $this->parseMsg( array( 'actionthrottledtext' ) );
  61                                 $this->setWarning( $error['info'] );
  62                         }
  63
  64                         if ( $forceLinkUpdate || $forceRecursiveLinkUpdate ) {
  65                                 if ( !$user->pingLimiter( 'linkpurge' ) ) {
  66                                         $popts = $page->makeParserOptions( 'canonical' );
  67
  68                                         # Parse content; note that HTML generation is only needed if we want to cache the result.
  69                                         $content = $page->getContent( Revision::RAW );
  70                                         $enableParserCache = $this->getConfig()->get( 'EnableParserCache' );
  71                                         $p_result = $content->getParserOutput(
  72                                                 $title,
  73                                                 $page->getLatest(),
  74                                                 $popts,
  75                                                 $enableParserCache
  76                                         );
  77
  78                                         # Update the links tables
  79                                         $updates = $content->getSecondaryDataUpdates(
  80                                                 $title, null, $forceRecursiveLinkUpdate, $p_result );
  81                                         DataUpdate::runUpdates( $updates );
  82
  83                                         $r['linkupdate'] = true;
  84
  85                                         if ( $enableParserCache ) {
  86                                                 $pcache = ParserCache::singleton();
  87                                                 $pcache->save( $p_result, $page, $popts );
  88                                         }
  89                                 } else {
  90                                         $error = $this->parseMsg( array( 'actionthrottledtext' ) );
  91                                         $this->setWarning( $error['info'] );
  92                                         $forceLinkUpdate = false;
  93                                 }
  94                         }
  95
  96                         $result[] = $r;
  97                 }
  98                 $apiResult = $this->getResult();
  99                 ApiResult::setIndexedTagName( $result, 'page' );
 100                 $apiResult->addValue( null, $this->getModuleName(), $result );
 101
 102                 $values = $pageSet->getNormalizedTitlesAsResult( $apiResult );
 103                 if ( $values ) {
 104                         $apiResult->addValue( null, 'normalized', $values );
 105                 }
 106                 $values = $pageSet->getConvertedTitlesAsResult( $apiResult );
 107                 if ( $values ) {
 108                         $apiResult->addValue( null, 'converted', $values );
 109                 }
 110                 $values = $pageSet->getRedirectTitlesAsResult( $apiResult );
 111                 if ( $values ) {
 112                         $apiResult->addValue( null, 'redirects', $values );
 113                 }
 114
 115                 $this->setContinuationManager( null );
 116                 $continuationManager->setContinuationIntoResult( $apiResult );
 117         }
 118
 119         /**
 120          * Get a cached instance of an ApiPageSet object
 121          * @return ApiPageSet
 122          */
 123         private function getPageSet() {
 124                 if ( !isset( $this->mPageSet ) ) {
 125                         $this->mPageSet = new ApiPageSet( $this );
 126                 }
 127
 128                 return $this->mPageSet;
 129         }
 130
 131         public function isWriteMode() {
 132                 return true;
 133         }
 134
 135         public function mustBePosted() {
 136                 // Anonymous users are not allowed a non-POST request
 137                 return !$this->getUser()->isAllowed( 'purge' );
 138         }
 139
 140         public function getAllowedParams( $flags = 0 ) {
 141                 $result = array(
 142                         'forcelinkupdate' => false,
 143                         'forcerecursivelinkupdate' => false,
 144                         'continue' => array(
 145                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 146                         ),
 147                 );
 148                 if ( $flags ) {
 149                         $result += $this->getPageSet()->getFinalParams( $flags );
 150                 }
 151
 152                 return $result;
 153         }
 154
 155         protected function getExamplesMessages() {
 156                 return array(
 157                         'action=purge&titles=Main_Page|API'
 158                                 => 'apihelp-purge-example-simple',
 159                         'action=purge&generator=allpages&gapnamespace=0&gaplimit=10'
 160                                 => 'apihelp-purge-example-generator',
 161                 );
 162         }
 163
 164         public function getHelpUrls() {
 165                 return 'https://www.mediawiki.org/wiki/API:Purge';
 166         }
 167 }