checkImages.php

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<?php
use MediaWiki\FileRepo\File\FileSelectQueryBuilder;
 
require_once __DIR__ . '/Maintenance.php';
 
class CheckImages extends Maintenance {
 
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Check images to see if they exist, are readable, etc' );
        $this->setBatchSize( 1000 );
    }
 
    public function execute() {
        $start = '';
        $dbr = $this->getReplicaDB();
 
        $numImages = 0;
        $numGood = 0;
 
        $repo = $this->getServiceContainer()->getRepoGroup()->getLocalRepo();
        do {
            $queryBuilder = FileSelectQueryBuilder::newForFile( $dbr );
 
            $res = $queryBuilder->where( $dbr->expr( 'img_name', '>', $start ) )
                ->limit( $this->getBatchSize() )
                ->caller( __METHOD__ )->fetchResultSet();
            foreach ( $res as $row ) {
                $numImages++;
                $start = $row->img_name;
                $file = $repo->newFileFromRow( $row );
                $path = $file->getPath();
                if ( !$path ) {
                    $this->output( "{$row->img_name}: not locally accessible\n" );
                    continue;
                }
                $size = $repo->getFileSize( $file->getPath() );
                if ( $size === false ) {
                    $this->output( "{$row->img_name}: missing\n" );
                    continue;
                }
 
                if ( $size == 0 && $row->img_size != 0 ) {
                    $this->output( "{$row->img_name}: truncated, was {$row->img_size}\n" );
                    continue;
                }
 
                if ( $size != $row->img_size ) {
                    $this->output( "{$row->img_name}: size mismatch DB={$row->img_size}, "
                        . "actual={$size}\n" );
                    continue;
                }
 
                $numGood++;
            }
        } while ( $res->numRows() );
 
        $this->output( "Good images: $numGood/$numImages\n" );
    }
}
 
$maintClass = CheckImages::class;
require_once RUN_MAINTENANCE_IF_MAIN;