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
  34         private $mPageSet;
  35
  36         /**
  37          * Add all items from $values into the result
  38          * @param array $result output
  39          * @param array $values values to add
  40          * @param string $flag the name of the boolean flag to mark this element
  41          * @param string $name if given, name of the value
  42          */
  43         private static function addValues( array &$result, $values, $flag = null, $name = null ) {
  44                 foreach ( $values as $val ) {
  45                         if ( $val instanceof Title ) {
  46                                 $v = array();
  47                                 ApiQueryBase::addTitleInfo( $v, $val );
  48                         } elseif ( $name !== null ) {
  49                                 $v = array( $name => $val );
  50                         } else {
  51                                 $v = $val;
  52                         }
  53                         if ( $flag !== null ) {
  54                                 $v[$flag] = '';
  55                         }
  56                         $result[] = $v;
  57                 }
  58         }
  59
  60         /**
  61          * Purges the cache of a page
  62          */
  63         public function execute() {
  64                 $params = $this->extractRequestParams();
  65
  66                 $forceLinkUpdate = $params['forcelinkupdate'];
  67                 $forceRecursiveLinkUpdate = $params['forcerecursivelinkupdate'];
  68                 $pageSet = $this->getPageSet();
  69                 $pageSet->execute();
  70
  71                 $result = array();
  72                 self::addValues( $result, $pageSet->getInvalidTitles(), 'invalid', 'title' );
  73                 self::addValues( $result, $pageSet->getSpecialTitles(), 'special', 'title' );
  74                 self::addValues( $result, $pageSet->getMissingPageIDs(), 'missing', 'pageid' );
  75                 self::addValues( $result, $pageSet->getMissingRevisionIDs(), 'missing', 'revid' );
  76                 self::addValues( $result, $pageSet->getMissingTitles(), 'missing' );
  77                 self::addValues( $result, $pageSet->getInterwikiTitlesAsResult() );
  78
  79                 foreach ( $pageSet->getGoodTitles() as $title ) {
  80                         $r = array();
  81                         ApiQueryBase::addTitleInfo( $r, $title );
  82                         $page = WikiPage::factory( $title );
  83                         $page->doPurge(); // Directly purge and skip the UI part of purge().
  84                         $r['purged'] = '';
  85
  86                         if ( $forceLinkUpdate || $forceRecursiveLinkUpdate ) {
  87                                 if ( !$this->getUser()->pingLimiter( 'linkpurge' ) ) {
  88                                         global $wgEnableParserCache;
  89
  90                                         $popts = $page->makeParserOptions( 'canonical' );
  91
  92                                         # Parse content; note that HTML generation is only needed if we want to cache the result.
  93                                         $content = $page->getContent( Revision::RAW );
  94                                         $p_result = $content->getParserOutput( $title, $page->getLatest(), $popts, $wgEnableParserCache );
  95
  96                                         # Update the links tables
  97                                         $updates = $content->getSecondaryDataUpdates(
  98                                                 $title, null, $forceRecursiveLinkUpdate, $p_result );
  99                                         DataUpdate::runUpdates( $updates );
 100
 101                                         $r['linkupdate'] = '';
 102
 103                                         if ( $wgEnableParserCache ) {
 104                                                 $pcache = ParserCache::singleton();
 105                                                 $pcache->save( $p_result, $page, $popts );
 106                                         }
 107                                 } else {
 108                                         $error = $this->parseMsg( array( 'actionthrottledtext' ) );
 109                                         $this->setWarning( $error['info'] );
 110                                         $forceLinkUpdate = false;
 111                                 }
 112                         }
 113
 114                         $result[] = $r;
 115                 }
 116                 $apiResult = $this->getResult();
 117                 $apiResult->setIndexedTagName( $result, 'page' );
 118                 $apiResult->addValue( null, $this->getModuleName(), $result );
 119
 120                 $values = $pageSet->getNormalizedTitlesAsResult( $apiResult );
 121                 if ( $values ) {
 122                         $apiResult->addValue( null, 'normalized', $values );
 123                 }
 124                 $values = $pageSet->getConvertedTitlesAsResult( $apiResult );
 125                 if ( $values ) {
 126                         $apiResult->addValue( null, 'converted', $values );
 127                 }
 128                 $values = $pageSet->getRedirectTitlesAsResult( $apiResult );
 129                 if ( $values ) {
 130                         $apiResult->addValue( null, 'redirects', $values );
 131                 }
 132         }
 133
 134         /**
 135          * Get a cached instance of an ApiPageSet object
 136          * @return ApiPageSet
 137          */
 138         private function getPageSet() {
 139                 if ( !isset( $this->mPageSet ) ) {
 140                         $this->mPageSet = new ApiPageSet( $this );
 141                 }
 142
 143                 return $this->mPageSet;
 144         }
 145
 146         public function isWriteMode() {
 147                 return true;
 148         }
 149
 150         public function mustBePosted() {
 151                 // Anonymous users are not allowed a non-POST request
 152                 return !$this->getUser()->isAllowed( 'purge' );
 153         }
 154
 155         public function getAllowedParams( $flags = 0 ) {
 156                 $result = array(
 157                         'forcelinkupdate' => false,
 158                         'forcerecursivelinkupdate' => false
 159                 );
 160                 if ( $flags ) {
 161                         $result += $this->getPageSet()->getFinalParams( $flags );
 162                 }
 163
 164                 return $result;
 165         }
 166
 167         public function getParamDescription() {
 168                 return $this->getPageSet()->getFinalParamDescription()
 169                         + array(
 170                                 'forcelinkupdate' => 'Update the links tables',
 171                                 'forcerecursivelinkupdate' => 'Update the links table, and update ' .
 172                                         'the links tables for any page that uses this page as a template',
 173                         );
 174         }
 175
 176         public function getResultProperties() {
 177                 return array(
 178                         ApiBase::PROP_LIST => true,
 179                         '' => array(
 180                                 'ns' => array(
 181                                         ApiBase::PROP_TYPE => 'namespace',
 182                                         ApiBase::PROP_NULLABLE => true
 183                                 ),
 184                                 'title' => array(
 185                                         ApiBase::PROP_TYPE => 'string',
 186                                         ApiBase::PROP_NULLABLE => true
 187                                 ),
 188                                 'pageid' => array(
 189                                         ApiBase::PROP_TYPE => 'integer',
 190                                         ApiBase::PROP_NULLABLE => true
 191                                 ),
 192                                 'revid' => array(
 193                                         ApiBase::PROP_TYPE => 'integer',
 194                                         ApiBase::PROP_NULLABLE => true
 195                                 ),
 196                                 'invalid' => 'boolean',
 197                                 'special' => 'boolean',
 198                                 'missing' => 'boolean',
 199                                 'purged' => 'boolean',
 200                                 'linkupdate' => 'boolean',
 201                                 'iw' => array(
 202                                         ApiBase::PROP_TYPE => 'string',
 203                                         ApiBase::PROP_NULLABLE => true
 204                                 ),
 205                         )
 206                 );
 207         }
 208
 209         public function getDescription() {
 210                 return array( 'Purge the cache for the given titles.',
 211                         'Requires a POST request if the user is not logged in.'
 212                 );
 213         }
 214
 215         public function getPossibleErrors() {
 216                 return array_merge(
 217                         parent::getPossibleErrors(),
 218                         $this->getPageSet()->getFinalPossibleErrors()
 219                 );
 220         }
 221
 222         public function getExamples() {
 223                 return array(
 224                         'api.php?action=purge&titles=Main_Page|API' => 'Purge the "Main Page" and the "API" page',
 225                 );
 226         }
 227
 228         public function getHelpUrls() {
 229                 return 'https://www.mediawiki.org/wiki/API:Purge';
 230         }
 231 }