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wp-content/plugins/jetpack-boost/app/lib/minify/class-config.php

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+<?php
+
+namespace Automattic\Jetpack_Boost\Lib\Minify;
+
+/**
+ * Configuration management for the minification system.
+ */
+class Config {
+	/**
+	 * Get the directory path for storing static cache files.
+	 */
+	public static function get_static_cache_dir_path() {
+		return WP_CONTENT_DIR . '/boost-cache/static';
+	}
+
+	/**
+	 * Get the directory path for storing cache files.
+	 */
+	public static function get_legacy_cache_dir_path() {
+		if ( defined( 'PAGE_OPTIMIZE_CACHE_DIR' ) ) {
+			if ( empty( \PAGE_OPTIMIZE_CACHE_DIR ) ) {
+				return false;
+			}
+
+			return \PAGE_OPTIMIZE_CACHE_DIR;
+		}
+
+		return WP_CONTENT_DIR . '/cache/page_optimize';
+	}
+
+	/**
+	 * Get WordPress ABSPATH, with support for custom configuration.
+	 */
+	public static function get_abspath() {
+		return defined( 'PAGE_OPTIMIZE_ABSPATH' ) ? \PAGE_OPTIMIZE_ABSPATH : \ABSPATH;
+	}
+
+	/**
+	 * Check if static cache can be used.
+	 */
+	public static function can_use_static_cache() {
+		$cache_dir = static::get_static_cache_dir_path();
+
+		if ( ! static::ensure_dir_exists( $cache_dir ) ) {
+			static::log_error(
+				sprintf(
+				/* translators: a filesystem path to a directory */
+					__( "Disabling concatenate static cache. Unable to create cache directory '%s'.", 'jetpack-boost' ),
+					$cache_dir
+				)
+			);
+			return false;
+		}
+
+		if ( ! static::is_dir_writable( $cache_dir ) ) {
+			static::log_error(
+				sprintf(
+				/* translators: a filesystem path to a directory */
+					__( "Disabling concatenate static cache. Unable to write to cache directory '%s'.", 'jetpack-boost' ),
+					$cache_dir
+				)
+			);
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Check if cache can be used.
+	 */
+	public static function can_use_cache() {
+		$cache_dir = static::get_legacy_cache_dir_path();
+
+		if ( empty( $cache_dir ) ) {
+			static::log_error( __( 'Disabling page-optimize cache. Cache directory not defined.', 'jetpack-boost' ) );
+			return false;
+		}
+
+		if ( ! static::ensure_dir_exists( $cache_dir ) ) {
+			static::log_error(
+				sprintf(
+				/* translators: a filesystem path to a directory */
+					__( "Disabling page-optimize cache. Unable to create cache directory '%s'.", 'jetpack-boost' ),
+					$cache_dir
+				)
+			);
+			return false;
+		}
+
+		if ( ! static::is_dir_writable( $cache_dir ) ) {
+			static::log_error(
+				sprintf(
+				/* translators: a filesystem path to a directory */
+					__( "Disabling page-optimize cache. Unable to write to cache directory '%s'.", 'jetpack-boost' ),
+					$cache_dir
+				)
+			);
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Ensure a directory exists.
+	 *
+	 * @param string $dir The directory to check.
+	 * @return bool True if the directory exists, false otherwise.
+	 */
+	private static function ensure_dir_exists( $dir ) {
+		// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_mkdir
+		if ( ! is_dir( $dir ) && ! mkdir( $dir, 0775, true ) ) {
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Ensure a directory is writable.
+	 *
+	 * @param string $dir The directory to check.
+	 * @return bool True if the directory is writable, false otherwise.
+	 */
+	private static function is_dir_writable( $dir ) {
+		// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_is_writable
+		if ( ! is_dir( $dir ) || ! is_writable( $dir ) || ! is_executable( $dir ) ) {
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Log an error message if WP_DEBUG is enabled.
+	 *
+	 * @param string $message The error message to log.
+	 */
+	private static function log_error( $message ) {
+		if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
+			// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
+			error_log( $message );
+		}
+	}
+}