diff options
Diffstat (limited to 'plugins/jetpack/modules/photon-cdn.php')
| -rw-r--r-- | plugins/jetpack/modules/photon-cdn.php | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/plugins/jetpack/modules/photon-cdn.php b/plugins/jetpack/modules/photon-cdn.php new file mode 100644 index 00000000..3190237b --- /dev/null +++ b/plugins/jetpack/modules/photon-cdn.php @@ -0,0 +1,262 @@ +<?php +/** + * Module Name: Asset CDN + * Module Description: Serve static assets from our servers + * Sort Order: 26 + * Recommendation Order: 1 + * First Introduced: 6.6 + * Requires Connection: No + * Auto Activate: No + * Module Tags: Photos and Videos, Appearance, Recommended + * Feature: Recommended, Appearance + * Additional Search Queries: photon, image, cdn, performance, speed, assets + */ + +$GLOBALS['concatenate_scripts'] = false; + +Jetpack::dns_prefetch( array( + '//c0.wp.com', +) ); + +class Jetpack_Photon_Static_Assets_CDN { + const CDN = 'https://c0.wp.com/'; + + /** + * Sets up action handlers needed for Jetpack CDN. + */ + public static function go() { + add_action( 'wp_print_scripts', array( __CLASS__, 'cdnize_assets' ) ); + add_action( 'wp_print_styles', array( __CLASS__, 'cdnize_assets' ) ); + add_action( 'admin_print_scripts', array( __CLASS__, 'cdnize_assets' ) ); + add_action( 'admin_print_styles', array( __CLASS__, 'cdnize_assets' ) ); + add_action( 'wp_footer', array( __CLASS__, 'cdnize_assets' ) ); + } + + /** + * Sets up CDN URLs for assets that are enqueued by the WordPress Core. + */ + public static function cdnize_assets() { + global $wp_scripts, $wp_styles, $wp_version; + + /** + * Filters Jetpack CDN's Core version number and locale. Can be used to override the values + * that Jetpack uses to retrieve assets. Expects the values to be returned in an array. + * + * @module photon-cdn + * + * @since 6.6.0 + * + * @param array $values array( $version = core assets version, i.e. 4.9.8, $locale = desired locale ) + */ + list( $version, $locale ) = apply_filters( + 'jetpack_cdn_core_version_and_locale', + array( $wp_version, get_locale() ) + ); + + if ( self::is_public_version( $version ) ) { + $site_url = trailingslashit( site_url() ); + foreach ( $wp_scripts->registered as $handle => $thing ) { + if ( wp_startswith( $thing->src, self::CDN ) ) { + continue; + } + $src = ltrim( str_replace( $site_url, '', $thing->src ), '/' ); + if ( self::is_js_or_css_file( $src ) && in_array( substr( $src, 0, 9 ), array( 'wp-admin/', 'wp-includ' ) ) ) { + $wp_scripts->registered[ $handle ]->src = sprintf( self::CDN . 'c/%1$s/%2$s', $version, $src ); + $wp_scripts->registered[ $handle ]->ver = null; + } + } + foreach ( $wp_styles->registered as $handle => $thing ) { + if ( wp_startswith( $thing->src, self::CDN ) ) { + continue; + } + $src = ltrim( str_replace( $site_url, '', $thing->src ), '/' ); + if ( self::is_js_or_css_file( $src ) && in_array( substr( $src, 0, 9 ), array( 'wp-admin/', 'wp-includ' ) ) ) { + $wp_styles->registered[ $handle ]->src = sprintf( self::CDN . 'c/%1$s/%2$s', $version, $src ); + $wp_styles->registered[ $handle ]->ver = null; + } + } + } + + self::cdnize_plugin_assets( 'jetpack', JETPACK__VERSION ); + if ( class_exists( 'WooCommerce' ) ) { + self::cdnize_plugin_assets( 'woocommerce', WC_VERSION ); + } + } + + /** + * Sets up CDN URLs for supported plugin assets. + * + * @param String $plugin_slug plugin slug string. + * @param String $current_version plugin version string. + * @return null|bool + */ + public static function cdnize_plugin_assets( $plugin_slug, $current_version ) { + global $wp_scripts, $wp_styles; + + /** + * Filters Jetpack CDN's plugin slug and version number. Can be used to override the values + * that Jetpack uses to retrieve assets. For example, when testing a development version of Jetpack + * the assets are not yet published, so you may need to override the version value to either + * trunk, or the latest available version. Expects the values to be returned in an array. + * + * @module photon-cdn + * + * @since 6.6.0 + * + * @param array $values array( $slug = the plugin repository slug, i.e. jetpack, $version = the plugin version, i.e. 6.6 ) + */ + list( $plugin_slug, $current_version ) = apply_filters( + 'jetpack_cdn_plugin_slug_and_version', + array( $plugin_slug, $current_version ) + ); + + $assets = self::get_plugin_assets( $plugin_slug, $current_version ); + $plugin_directory_url = plugins_url() . '/' . $plugin_slug . '/'; + + if ( is_wp_error( $assets ) || ! is_array( $assets ) ) { + return false; + } + + foreach ( $wp_scripts->registered as $handle => $thing ) { + if ( wp_startswith( $thing->src, self::CDN ) ) { + continue; + } + if ( wp_startswith( $thing->src, $plugin_directory_url ) ) { + $local_path = substr( $thing->src, strlen( $plugin_directory_url ) ); + if ( in_array( $local_path, $assets, true ) ) { + $wp_scripts->registered[ $handle ]->src = sprintf( self::CDN . 'p/%1$s/%2$s/%3$s', $plugin_slug, $current_version, $local_path ); + $wp_scripts->registered[ $handle ]->ver = null; + } + } + } + foreach ( $wp_styles->registered as $handle => $thing ) { + if ( wp_startswith( $thing->src, self::CDN ) ) { + continue; + } + if ( wp_startswith( $thing->src, $plugin_directory_url ) ) { + $local_path = substr( $thing->src, strlen( $plugin_directory_url ) ); + if ( in_array( $local_path, $assets, true ) ) { + $wp_styles->registered[ $handle ]->src = sprintf( self::CDN . 'p/%1$s/%2$s/%3$s', $plugin_slug, $current_version, $local_path ); + $wp_styles->registered[ $handle ]->ver = null; + } + } + } + } + + /** + * Returns cdn-able assets for a given plugin. + * + * @param string $plugin plugin slug string. + * @param string $version plugin version number string. + * @return array|bool Will return false if not a public version. + */ + public static function get_plugin_assets( $plugin, $version ) { + if ( 'jetpack' === $plugin && JETPACK__VERSION === $version ) { + if ( ! self::is_public_version( $version ) ) { + return false; + } + + $assets = array(); // The variable will be redefined in the included file. + + include JETPACK__PLUGIN_DIR . 'modules/photon-cdn/jetpack-manifest.php'; + return $assets; + } + + /** + * Used for other plugins to provide their bundled assets via filter to + * prevent the need of storing them in an option or an external api request + * to w.org. + * + * @module photon-cdn + * + * @since 6.6.0 + * + * @param array $assets The assets array for the plugin. + * @param string $version The version of the plugin being requested. + */ + $assets = apply_filters( "jetpack_cdn_plugin_assets-{$plugin}", null, $version ); + if ( is_array( $assets ) ) { + return $assets; + } + + if ( ! self::is_public_version( $version ) ) { + return false; + } + + $cache = Jetpack_Options::get_option( 'static_asset_cdn_files', array() ); + if ( isset( $cache[ $plugin ][ $version ] ) ) { + if ( is_array( $cache[ $plugin ][ $version ] ) ) { + return $cache[ $plugin ][ $version ]; + } + if ( is_numeric( $cache[ $plugin ][ $version ] ) ) { + // Cache an empty result for up to 24h. + if ( intval( $cache[ $plugin ][ $version ] ) + DAY_IN_SECONDS > time() ) { + return array(); + } + } + } + + $url = sprintf( 'http://downloads.wordpress.org/plugin-checksums/%s/%s.json', $plugin, $version ); + + if ( wp_http_supports( array( 'ssl' ) ) ) { + $url = set_url_scheme( $url, 'https' ); + } + + $response = wp_remote_get( $url ); + + $body = trim( wp_remote_retrieve_body( $response ) ); + $body = json_decode( $body, true ); + + $return = time(); + if ( is_array( $body ) ) { + $return = array_filter( array_keys( $body['files'] ), array( __CLASS__, 'is_js_or_css_file' ) ); + } + + $cache[ $plugin ] = array(); + $cache[ $plugin ][ $version ] = $return; + Jetpack_Options::update_option( 'static_asset_cdn_files', $cache, true ); + + return $return; + } + + /** + * Checks a path whether it is a JS or CSS file. + * + * @param String $path file path. + * @return Boolean whether the file is a JS or CSS. + */ + public static function is_js_or_css_file( $path ) { + return ( false === strpos( $path, '?' ) ) && in_array( substr( $path, -3 ), array( 'css', '.js' ), true ); + } + + /** + * Checks whether the version string indicates a production version. + * + * @param String $version the version string. + * @param Boolean $include_beta_and_rc whether to count beta and RC versions as production. + * @return Boolean + */ + public static function is_public_version( $version, $include_beta_and_rc = false ) { + if ( preg_match( '/^\d+(\.\d+)+$/', $version ) ) { + // matches `1` `1.2` `1.2.3`. + return true; + } elseif ( $include_beta_and_rc && preg_match( '/^\d+(\.\d+)+(-(beta|rc|pressable)\d?)$/i', $version ) ) { + // matches `1.2.3` `1.2.3-beta` `1.2.3-pressable` `1.2.3-beta1` `1.2.3-rc` `1.2.3-rc2`. + return true; + } + // unrecognized version. + return false; + } +} +/** + * Allow plugins to short-circuit the Asset CDN, even when the module is on. + * + * @module photon-cdn + * + * @since 6.7.0 + * + * @param false bool Should the Asset CDN be blocked? False by default. + */ +if ( true !== apply_filters( 'jetpack_force_disable_site_accelerator', false ) ) { + Jetpack_Photon_Static_Assets_CDN::go(); +} |