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<?php declare( strict_types = 1 ); namespace Automattic\WooCommerce\Blocks; use Automattic\WooCommerce\Internal\Utilities\BlocksUtil; /** * DependencyDetection class. * * Provides runtime detection of extensions that use Blocks related WooCommerce globals * (window.wc.*) without properly declaring their PHP script dependencies. * * This runs by default to warn developers about missing dependencies. * * @since 10.5.0 * @internal */ final class DependencyDetection { /** * WooCommerce blocks that use the tracked globals. * * Detection script only runs on pages containing these blocks. * * @var array<string> */ private const TRACKED_BLOCKS = array( 'woocommerce/checkout', 'woocommerce/cart', 'woocommerce/mini-cart', ); /** * Maps window.wc.* property names to their required script handles. * * This is the source of truth for both PHP and JS dependency detection. * Based on wcDepMap and wcHandleMap in client/blocks/bin/webpack-helpers.js. * * @var array<string, string> */ private const WC_GLOBAL_EXPORTS = array( 'wcBlocksRegistry' => 'wc-blocks-registry', 'wcSettings' => 'wc-settings', 'wcBlocksData' => 'wc-blocks-data-store', 'data' => 'wc-store-data', 'wcBlocksSharedContext' => 'wc-blocks-shared-context', 'wcBlocksSharedHocs' => 'wc-blocks-shared-hocs', 'priceFormat' => 'wc-price-format', 'blocksCheckout' => 'wc-blocks-checkout', 'blocksCheckoutEvents' => 'wc-blocks-checkout-events', 'blocksComponents' => 'wc-blocks-components', 'wcTypes' => 'wc-types', 'sanitize' => 'wc-sanitize', ); /** * Whether the proxy script was output. * * Used to ensure we only output the registry if the proxy was set up. * * @var bool */ private bool $proxy_output = false; /** * Constructor. */ public function __construct() { $this->init(); } /** * Initialize hooks. * * @since 10.5.0 */ public function init(): void { // Only run when debugging is enabled. if ( ! defined( 'WP_DEBUG' ) || ! WP_DEBUG ) { return; } // Output an early inline script to set up the Proxy before any other scripts run. add_action( 'wp_head', array( $this, 'output_early_proxy_setup' ), 1 ); add_action( 'admin_head', array( $this, 'output_early_proxy_setup' ), 1 ); // Output registry late when all scripts (including IntegrationInterface) are registered. add_action( 'wp_print_footer_scripts', array( $this, 'output_script_registry' ), 1 ); add_action( 'admin_print_footer_scripts', array( $this, 'output_script_registry' ), 1 ); } /** * Output early inline script to set up the Proxy on window.wc. * * This must run before any WooCommerce scripts to intercept access. * The script is loaded from a separate file for better IDE support and testing, * but output inline to ensure correct timing (before any enqueued scripts). * * @since 10.5.0 */ public function output_early_proxy_setup(): void { // Only run on pages that have the tracked blocks. if ( ! $this->page_has_tracked_blocks() ) { return; } // Load from the production assets directory (built by webpack and copied during release build). $script_path = __DIR__ . '/../../assets/client/blocks/dependency-detection.js'; if ( ! file_exists( $script_path ) ) { return; } // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- Local file read for inline script output. $script_content = file_get_contents( $script_path ); if ( ! $script_content ) { return; } // Inject the global-to-handle mapping from PHP (source of truth). $mapping_json = \wp_json_encode( self::WC_GLOBAL_EXPORTS ); if ( false === $mapping_json ) { return; } $script_content = str_replace( '__WC_GLOBAL_EXPORTS_PLACEHOLDER__', $mapping_json, $script_content ); // Inject the WooCommerce plugin URL for script origin detection. // This accounts for custom plugin directories (WP_PLUGIN_DIR, WP_CONTENT_DIR). $wc_plugin_url = \plugins_url( '/', WC_PLUGIN_FILE ); $script_content = str_replace( '__WC_PLUGIN_URL_PLACEHOLDER__', '"' . esc_js( $wc_plugin_url ) . '"', $script_content ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Script content is from a trusted local file, JSON is safely encoded. echo '<script id="wc-dependency-detection">' . $script_content . '</script>' . "\n"; $this->proxy_output = true; } /** * Output the script registry JSON for dependency checking. * * This runs late (wp_print_footer_scripts) to ensure all scripts, * including those registered via IntegrationInterface, are captured. * * @since 10.5.0 */ public function output_script_registry(): void { // Only output registry if the proxy was set up earlier. // This avoids the duplicate page_has_tracked_blocks() check and ensures // we don't output a registry without a proxy to consume it. if ( ! $this->proxy_output ) { return; } // Build the script registry mapping URLs to handles and dependencies. $script_registry = $this->build_script_registry(); $registry_json = \wp_json_encode( $script_registry ); if ( false === $registry_json ) { return; } // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- JSON is safely encoded by wp_json_encode. echo '<script id="wc-dependency-detection-registry">if(typeof window.wc.wcUpdateDependencyRegistry==="function"){window.wc.wcUpdateDependencyRegistry(' . $registry_json . ');}</script>' . "\n"; } /** * Build a registry of all enqueued scripts with their URLs and dependencies. * * @return array<string, array{handle: string, deps: array<string>}> */ private function build_script_registry(): array { $wp_scripts = wp_scripts(); $registry = array(); foreach ( $wp_scripts->registered as $handle => $script ) { // Skip scripts without a source URL. if ( empty( $script->src ) ) { continue; } // Get the full URL. $src = $script->src; if ( ! is_string( $src ) ) { // Skip malformed src. continue; } if ( ! preg_match( '|^(https?:)?//|', $src ) ) { // Relative URL - make it absolute. $src = $wp_scripts->base_url . $src; } // Skip WooCommerce's own scripts - we don't need to check those. if ( $this->is_woocommerce_script( $src ) ) { continue; } // Skip WordPress core scripts - they won't use wc.* globals. if ( $this->is_wordpress_core_script( $src ) ) { continue; } // Normalize the URL for consistent matching. $src = $this->normalize_url( $src ); $registry[ $src ] = array( 'handle' => $handle, 'deps' => $this->get_all_dependencies( $script->deps ), ); } return $registry; } /** * Check if a script URL belongs to WooCommerce core. * * Checks if the script is loaded from the WooCommerce core plugin directory, * not from third-party extensions that may use similar handle naming. * * @param string $url Script URL. * @return bool */ private function is_woocommerce_script( string $url ): bool { // Get the WooCommerce plugin URL (accounts for custom plugin directories). $wc_plugin_url = \plugins_url( '/', WC_PLUGIN_FILE ); // Check if the URL starts with the WooCommerce plugin URL and is in a known subdirectory. if ( strpos( $url, $wc_plugin_url ) !== 0 ) { return false; } // Get the path after the WooCommerce plugin URL. $relative_path = substr( $url, strlen( $wc_plugin_url ) ); // Check if it's in one of the known WooCommerce asset directories. return (bool) preg_match( '#^(client|assets|build|vendor)/#', $relative_path ); } /** * Check if a script URL belongs to WordPress core. * * WordPress core scripts (wp-includes, wp-admin) won't use wc.* globals, * so we can skip them to reduce registry size. * * @param string $url Script URL. * @return bool */ private function is_wordpress_core_script( string $url ): bool { return (bool) preg_match( '#/(wp-includes|wp-admin)/#', $url ); } /** * Recursively get all dependencies including nested ones. * * @param array<string> $deps Direct dependencies. * @return array<string> All dependencies (flattened). */ private function get_all_dependencies( array $deps ): array { $wp_scripts = wp_scripts(); $all_deps = array(); $deps_to_process = $deps; while ( ! empty( $deps_to_process ) ) { $handle = array_shift( $deps_to_process ); if ( in_array( $handle, $all_deps, true ) ) { continue; } $all_deps[] = $handle; // Add nested dependencies to process. if ( isset( $wp_scripts->registered[ $handle ] ) ) { foreach ( $wp_scripts->registered[ $handle ]->deps as $nested_dep ) { if ( ! in_array( $nested_dep, $all_deps, true ) ) { $deps_to_process[] = $nested_dep; } } } } // Filter to only include WooCommerce handles we care about. $wc_handles = array_values( self::WC_GLOBAL_EXPORTS ); return array_values( array_filter( $all_deps, function ( $dep ) use ( $wc_handles ) { return in_array( $dep, $wc_handles, true ); } ) ); } /** * Check if the current page contains any of the tracked blocks. * Checks post content, widget areas, and template parts (header) for blocks. * * @return bool True if page has tracked blocks. */ private function page_has_tracked_blocks(): bool { // Check post content for blocks. foreach ( self::TRACKED_BLOCKS as $block_name ) { if ( \has_block( $block_name ) ) { return true; } } // Check widget areas for mini-cart (classic themes). $mini_cart_in_widgets = BlocksUtil::get_blocks_from_widget_area( 'woocommerce/mini-cart' ); if ( ! empty( $mini_cart_in_widgets ) ) { return true; } // Check header template part for mini-cart (block themes). try { $mini_cart_in_header = BlocksUtil::get_block_from_template_part( 'woocommerce/mini-cart', 'header' ); if ( ! empty( $mini_cart_in_header ) ) { return true; } } catch ( \Throwable $e ) { // phpcs:ignore Generic.CodeAnalysis.EmptyStatement.DetectedCatch // Template part may not exist in all themes, silently continue. } return false; } /** * Normalize a URL by removing query strings and hash fragments. * * This helps match URLs in stack traces which don't include query strings. * * @param string $url URL to normalize. * @return string Normalized URL without query string or hash. */ private function normalize_url( string $url ): string { $scheme = wp_parse_url( $url, PHP_URL_SCHEME ); $host = wp_parse_url( $url, PHP_URL_HOST ); $path = wp_parse_url( $url, PHP_URL_PATH ); if ( $scheme && $host && $path ) { $port = wp_parse_url( $url, PHP_URL_PORT ); return $scheme . '://' . $host . ( $port ? ':' . $port : '' ) . $path; } return $url; } }
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