ApiTag.php

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<?php
 
use MediaWiki\Revision\RevisionStore;
use Wikimedia\Rdbms\IDatabase;
use Wikimedia\Rdbms\ILoadBalancer;
 
class ApiTag extends ApiBase {
 
    use ApiBlockInfoTrait;
 
    private $dbr;
 
    private $revisionStore;
 
    public function __construct(
        ApiMain $main,
        $action,
        ILoadBalancer $loadBalancer,
        RevisionStore $revisionStore
    ) {
        parent::__construct( $main, $action );
        $this->dbr = $loadBalancer->getConnectionRef( DB_REPLICA );
        $this->revisionStore = $revisionStore;
    }
 
    public function execute() {
        $params = $this->extractRequestParams();
        $user = $this->getUser();
 
        // make sure the user is allowed
        $this->checkUserRightsAny( 'changetags' );
 
        // Fail early if the user is sitewide blocked.
        $block = $user->getBlock();
        if ( $block && $block->isSitewide() ) {
            $this->dieBlocked( $block );
        }
 
        // Check if user can add tags
        if ( $params['tags'] ) {
            $ableToTag = ChangeTags::canAddTagsAccompanyingChange( $params['tags'], $this->getAuthority() );
            if ( !$ableToTag->isOK() ) {
                $this->dieStatus( $ableToTag );
            }
        }
 
        // validate and process each revid, rcid and logid
        $this->requireAtLeastOneParameter( $params, 'revid', 'rcid', 'logid' );
        $ret = [];
        if ( $params['revid'] ) {
            foreach ( $params['revid'] as $id ) {
                $ret[] = $this->processIndividual( 'revid', $params, $id );
            }
        }
        if ( $params['rcid'] ) {
            foreach ( $params['rcid'] as $id ) {
                $ret[] = $this->processIndividual( 'rcid', $params, $id );
            }
        }
        if ( $params['logid'] ) {
            foreach ( $params['logid'] as $id ) {
                $ret[] = $this->processIndividual( 'logid', $params, $id );
            }
        }
 
        ApiResult::setIndexedTagName( $ret, 'result' );
        $this->getResult()->addValue( null, $this->getModuleName(), $ret );
    }
 
    protected function validateLogId( $logid ) {
        $result = $this->dbr->selectField( 'logging', 'log_id', [ 'log_id' => $logid ],
            __METHOD__ );
        return (bool)$result;
    }
 
    protected function processIndividual( $type, $params, $id ) {
        $user = $this->getUser();
        $idResult = [ $type => $id ];
 
        // validate the ID
        $valid = false;
        switch ( $type ) {
            case 'rcid':
                $valid = RecentChange::newFromId( $id );
                // TODO: replace use of PermissionManager
                if ( $valid && $this->getPermissionManager()->isBlockedFrom( $user, $valid->getTitle() ) ) {
                    $idResult['status'] = 'error';
                    // @phan-suppress-next-line PhanTypeMismatchArgument
                    $idResult += $this->getErrorFormatter()->formatMessage( ApiMessage::create(
                        'apierror-blocked',
                        'blocked',
                        [ 'blockinfo' => $this->getBlockDetails( $user->getBlock() ) ]
                    ) );
                    return $idResult;
                }
                break;
            case 'revid':
                $valid = $this->revisionStore->getRevisionById( $id );
                // TODO: replace use of PermissionManager
                if (
                    $valid &&
                    $this->getPermissionManager()->isBlockedFrom( $user, $valid->getPageAsLinkTarget() )
                ) {
                    $idResult['status'] = 'error';
                    // @phan-suppress-next-line PhanTypeMismatchArgument
                    $idResult += $this->getErrorFormatter()->formatMessage( ApiMessage::create(
                            'apierror-blocked',
                            'blocked',
                            [ 'blockinfo' => $this->getBlockDetails( $user->getBlock() ) ]
                    ) );
                    return $idResult;
                }
                break;
            case 'logid':
                $valid = $this->validateLogId( $id );
                break;
        }
 
        if ( !$valid ) {
            $idResult['status'] = 'error';
            // Messages: apierror-nosuchrcid apierror-nosuchrevid apierror-nosuchlogid
            $idResult += $this->getErrorFormatter()->formatMessage( [ "apierror-nosuch$type", $id ] );
            return $idResult;
        }
 
        $status = ChangeTags::updateTagsWithChecks( $params['add'],
            $params['remove'],
            ( $type === 'rcid' ? $id : null ),
            ( $type === 'revid' ? $id : null ),
            ( $type === 'logid' ? $id : null ),
            null,
            $params['reason'],
            $this->getAuthority()
        );
 
        if ( !$status->isOK() ) {
            if ( $status->hasMessage( 'actionthrottledtext' ) ) {
                $idResult['status'] = 'skipped';
            } else {
                $idResult['status'] = 'failure';
                $idResult['errors'] = $this->getErrorFormatter()->arrayFromStatus( $status, 'error' );
            }
        } else {
            $idResult['status'] = 'success';
            if ( $status->value->logId === null ) {
                $idResult['noop'] = true;
            } else {
                $idResult['actionlogid'] = $status->value->logId;
                $idResult['added'] = $status->value->addedTags;
                ApiResult::setIndexedTagName( $idResult['added'], 't' );
                $idResult['removed'] = $status->value->removedTags;
                ApiResult::setIndexedTagName( $idResult['removed'], 't' );
 
                if ( $params['tags'] ) {
                    ChangeTags::addTags( $params['tags'], null, null, $status->value->logId );
                }
            }
        }
        return $idResult;
    }
 
    public function mustBePosted() {
        return true;
    }
 
    public function isWriteMode() {
        return true;
    }
 
    public function getAllowedParams() {
        return [
            'rcid' => [
                ApiBase::PARAM_TYPE => 'integer',
                ApiBase::PARAM_ISMULTI => true,
            ],
            'revid' => [
                ApiBase::PARAM_TYPE => 'integer',
                ApiBase::PARAM_ISMULTI => true,
            ],
            'logid' => [
                ApiBase::PARAM_TYPE => 'integer',
                ApiBase::PARAM_ISMULTI => true,
            ],
            'add' => [
                ApiBase::PARAM_TYPE => 'tags',
                ApiBase::PARAM_ISMULTI => true,
            ],
            'remove' => [
                ApiBase::PARAM_TYPE => 'string',
                ApiBase::PARAM_ISMULTI => true,
            ],
            'reason' => [
                ApiBase::PARAM_DFLT => '',
            ],
            'tags' => [
                ApiBase::PARAM_TYPE => 'tags',
                ApiBase::PARAM_ISMULTI => true,
            ],
        ];
    }
 
    public function needsToken() {
        return 'csrf';
    }
 
    protected function getExamplesMessages() {
        return [
            'action=tag&revid=123&add=vandalism&token=123ABC'
                => 'apihelp-tag-example-rev',
            'action=tag&logid=123&remove=spam&reason=Wrongly+applied&token=123ABC'
                => 'apihelp-tag-example-log',
        ];
    }
 
    public function getHelpUrls() {
        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Tag';
    }
}