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ChangeTagValidator.php
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ChangeTagValidator.php
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<?php
namespace MediaWiki\Extension\AbuseFilter\ChangeTags;
use ChangeTags;
use MediaWiki\Status\Status;
/**
* Service for testing whether filters can tag edits and other changes
* with a specific tag
* @todo Use DI when available in core (T245964)
*/
class ChangeTagValidator {
public const SERVICE_NAME = 'AbuseFilterChangeTagValidator';
/** @var ChangeTagsManager */
private $changeTagsManager;
/**
* @param ChangeTagsManager $changeTagsManager
*/
public function __construct( ChangeTagsManager $changeTagsManager ) {
$this->changeTagsManager = $changeTagsManager;
}
/**
* Check whether a filter is allowed to use a tag
*
* @param string $tag Tag name
* @return Status
*/
public function validateTag( string $tag ): Status {
$tagNameStatus = ChangeTags::isTagNameValid( $tag );
if ( !$tagNameStatus->isGood() ) {
return $tagNameStatus;
}
$canAddStatus = ChangeTags::canAddTagsAccompanyingChange( [ $tag ] );
if ( $canAddStatus->isGood() ) {
return $canAddStatus;
}
if ( $tag === $this->changeTagsManager->getCondsLimitTag() ) {
return Status::newFatal( 'abusefilter-tag-reserved' );
}
// note: these are both local and global tags
$alreadyDefinedTags = $this->changeTagsManager->getTagsDefinedByFilters();
if ( in_array( $tag, $alreadyDefinedTags, true ) ) {
return Status::newGood();
}
// note: this check is only done for the local wiki
// global filters could interfere with existing tags on remote wikis
$canCreateTagStatus = ChangeTags::canCreateTag( $tag );
if ( $canCreateTagStatus->isGood() ) {
return $canCreateTagStatus;
}
return Status::newFatal( 'abusefilter-edit-bad-tags' );
}
}

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