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