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<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Api;
use MediaWiki\Deferred\DeferredUpdates;
use MediaWiki\Logger\LoggerFactory;
use MediaWiki\Page\WikiPageFactory;
use MediaWiki\Permissions\PermissionStatus;
use MediaWiki\Status\Status;
use MediaWiki\Title\Title;
use MediaWiki\Title\TitleFormatter;
/**
* API interface for page purging
* @ingroup API
*/
class ApiPurge extends ApiBase {
/** @var ApiPageSet|null */
private $mPageSet = null;
private WikiPageFactory $wikiPageFactory;
private TitleFormatter $titleFormatter;
public function __construct(
ApiMain $mainModule,
string $moduleName,
WikiPageFactory $wikiPageFactory,
TitleFormatter $titleFormatter
) {
parent::__construct( $mainModule, $moduleName );
$this->wikiPageFactory = $wikiPageFactory;
$this->titleFormatter = $titleFormatter;
}
/**
* Purges the cache of a page
*/
public function execute() {
$authority = $this->getAuthority();
// Fail early if the user is sitewide blocked.
$block = $authority->getBlock();
if ( $block && $block->isSitewide() ) {
$this->dieBlocked( $block );
}
$params = $this->extractRequestParams();
$continuationManager = new ApiContinuationManager( $this, [], [] );
$this->setContinuationManager( $continuationManager );
$forceLinkUpdate = $params['forcelinkupdate'];
$forceRecursiveLinkUpdate = $params['forcerecursivelinkupdate'];
$pageSet = $this->getPageSet();
$pageSet->execute();
$result = $pageSet->getInvalidTitlesAndRevisions();
$userName = $authority->getUser()->getName();
$now = wfTimestampNow();
foreach ( $pageSet->getGoodPages() as $pageIdentity ) {
$title = $this->titleFormatter->getPrefixedText( $pageIdentity );
$r = [
'ns' => $pageIdentity->getNamespace(),
'title' => $title,
];
$page = $this->wikiPageFactory->newFromTitle( $pageIdentity );
$purgeAuthStatus = PermissionStatus::newEmpty();
if ( $authority->authorizeAction( 'purge', $purgeAuthStatus ) ) {
// Directly purge and skip the UI part of purge()
$page->doPurge();
$r['purged'] = true;
} else {
if ( $purgeAuthStatus->isRateLimitExceeded() ) {
$this->addWarning( 'apierror-ratelimited' );
} else {
$this->addWarning( Status::wrap( $purgeAuthStatus )->getMessage() );
}
}
if ( $forceLinkUpdate || $forceRecursiveLinkUpdate ) {
$linkpurgeAuthStatus = PermissionStatus::newEmpty();
if ( $authority->authorizeAction( 'linkpurge', $linkpurgeAuthStatus ) ) {
# Logging to better see expensive usage patterns
if ( $forceRecursiveLinkUpdate ) {
LoggerFactory::getInstance( 'RecursiveLinkPurge' )->info(
"Recursive link purge enqueued for {title}",
[
'user' => $userName,
'title' => $title
]
);
}
$page->updateParserCache( [
'causeAction' => 'api-purge',
'causeAgent' => $userName,
] );
$page->doSecondaryDataUpdates( [
'recursive' => $forceRecursiveLinkUpdate,
'causeAction' => 'api-purge',
'causeAgent' => $userName,
'defer' => DeferredUpdates::PRESEND,
'freshness' => $now,
] );
$r['linkupdate'] = true;
} else {
if ( $linkpurgeAuthStatus->isRateLimitExceeded() ) {
$this->addWarning( 'apierror-ratelimited' );
$forceLinkUpdate = false;
$forceRecursiveLinkUpdate = false;
} else {
$this->addWarning( Status::wrap( $linkpurgeAuthStatus )->getMessage() );
}
}
}
$result[] = $r;
}
$apiResult = $this->getResult();
ApiResult::setIndexedTagName( $result, 'page' );
$apiResult->addValue( null, $this->getModuleName(), $result );
$values = $pageSet->getNormalizedTitlesAsResult( $apiResult );
if ( $values ) {
$apiResult->addValue( null, 'normalized', $values );
}
$values = $pageSet->getConvertedTitlesAsResult( $apiResult );
if ( $values ) {
$apiResult->addValue( null, 'converted', $values );
}
$values = $pageSet->getRedirectTitlesAsResult( $apiResult );
if ( $values ) {
$apiResult->addValue( null, 'redirects', $values );
}
$this->setContinuationManager( null );
$continuationManager->setContinuationIntoResult( $apiResult );
}
/**
* Get a cached instance of an ApiPageSet object
* @return ApiPageSet
*/
private function getPageSet() {
$this->mPageSet ??= new ApiPageSet( $this );
return $this->mPageSet;
}
public function isWriteMode() {
return true;
}
public function mustBePosted() {
return true;
}
public function getAllowedParams( $flags = 0 ) {
$result = [
'forcelinkupdate' => false,
'forcerecursivelinkupdate' => false,
'continue' => [
ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
],
];
if ( $flags ) {
$result += $this->getPageSet()->getFinalParams( $flags );
}
return $result;
}
protected function getExamplesMessages() {
$title = Title::newMainPage()->getPrefixedText();
$mp = rawurlencode( $title );
return [
"action=purge&titles={$mp}|API"
=> 'apihelp-purge-example-simple',
'action=purge&generator=allpages&gapnamespace=0&gaplimit=10'
=> 'apihelp-purge-example-generator',
];
}
public function getHelpUrls() {
return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Purge';
}
}
/** @deprecated class alias since 1.43 */
class_alias( ApiPurge::class, 'ApiPurge' );