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<?php namespace ImageOptimization\Classes\Image; if ( ! defined( 'ABSPATH' ) ) { exit; // Exit if accessed directly. } class Image_Backup_Path_Validator { /** * Validates and resolves a backup file path. * * @param string $path Backup path stored in attachment meta. * * @return string|null Canonical resolved path if valid, null otherwise. */ public static function resolve( string $path ): ?string { if ( '' === $path ) { return null; } $resolved_path = realpath( $path ); if ( false === $resolved_path ) { return null; } $upload_dir = wp_upload_dir(); $uploads_base = realpath( $upload_dir['basedir'] ); if ( false === $uploads_base ) { $uploads_base = wp_normalize_path( $upload_dir['basedir'] ); } else { $uploads_base = wp_normalize_path( $uploads_base ); } $resolved_path = wp_normalize_path( $resolved_path ); $uploads_prefix = trailingslashit( $uploads_base ); if ( 0 !== strpos( $resolved_path, $uploads_prefix ) && rtrim( $uploads_base, '/' ) !== $resolved_path ) { return null; } return $resolved_path; } }
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