%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
/**
* Handles the critical CSS generation process.
*
* @since 2.11
* @author Remy Perona
*/
class Rocket_Critical_CSS {
/**
* Background Process instance
*
* @since 2.11
* @var object $process Background Process instance.
* @access public
*/
public $process;
/**
* Items for which we generate a critical CSS
*
* @since 2.11
* @var array $items An array of items.
* @access public
*/
public $items = array();
/**
* Path to the critical CSS directory
*
* @since 2.11
* @var string path to the critical css directory
* @access public
*/
public $critical_css_path;
/**
* The single instance of the class.
*
* @since 2.11
* @var object
*/
protected static $_instance;
/**
* Get the main instance.
*
* Ensures only one instance of class is loaded or can be loaded.
*
* @since 2.11
* @author Remy Perona
*
* @return object Main instance.
*/
public static function get_instance() {
if ( ! isset( self::$_instance ) ) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Class constructor.
*
* @since 2.11
* @author Remy Perona
*/
public function __construct() {
$this->process = new Rocket_Background_Critical_CSS_Generation();
$this->items[] = array(
'type' => 'front_page',
'url' => home_url( '/' ),
);
$this->critical_css_path = WP_ROCKET_CRITICAL_CSS_PATH . get_current_blog_id() . '/';
}
/**
* Initializes class and hooks.
*
* @since 2.11
* @author Remy Perona
*/
public function init() {
add_action( 'admin_post_rocket_generate_critical_css', array( $this, 'init_critical_css_generation' ) );
add_action( 'update_option_' . WP_ROCKET_SLUG, array( $this, 'generate_critical_css_on_activation' ), 11, 2 );
add_action( 'update_option_' . WP_ROCKET_SLUG, array( $this, 'stop_process_on_deactivation' ), 11, 2 );
if ( get_rocket_option( 'async_css' ) ) {
add_action( 'switch_theme', array( $this, 'process_handler' ) );
}
add_action( 'admin_notices', array( $this, 'critical_css_generation_running_notice' ) );
add_action( 'admin_notices', array( $this, 'critical_css_generation_complete_notice' ) );
add_action( 'admin_notices', array( $this, 'warning_critical_css_dir_permissions' ) );
add_action( 'wp_head', array( $this, 'insert_load_css' ), PHP_INT_MAX );
if ( get_rocket_option( 'minify_concatenate_css' ) ) {
add_filter( 'rocket_buffer', array( $this, 'insert_critical_css_buffer' ), 14 );
} else {
add_action( 'wp_head', array( $this, 'insert_critical_css' ), 1 );
}
add_filter( 'rocket_buffer', array( $this, 'async_css' ), 15 );
add_action( 'rocket_critical_css_generation_process_complete', 'rocket_clean_domain' );
}
/**
* Performs the critical CSS generation
*
* @since 2.11
* @author Remy Perona
*/
public function process_handler() {
/**
* Filters the critical CSS generation process
*
* Use this filter to prevent the automatic critical CSS generation.
*
* @since 2.11.5
* @author Remy Perona
*
* @param bool $do_rocket_critical_css_generation True to activate the automatic generation, false to prevent it.
*/
if ( apply_filters( 'do_rocket_critical_css_generation', true ) ) {
$this->clean_critical_css();
if ( method_exists( $this->process, 'cancel_process' ) ) {
$this->process->cancel_process();
}
$this->set_items();
foreach ( $this->items as $item ) {
$this->process->push_to_queue( $item );
}
$transient = array(
'generated' => 0,
'total' => count( $this->items ),
'items' => array(),
);
set_transient( 'rocket_critical_css_generation_process_running', $transient, HOUR_IN_SECONDS );
$this->process->save()->dispatch();
}
}
/**
* Launches the critical CSS generation from admin
*
* @since 2.11
* @author Remy Perona
*
* @see process_handler()
*/
public function init_critical_css_generation() {
if ( ! isset( $_GET['_wpnonce'] ) || ! wp_verify_nonce( $_GET['_wpnonce'], 'rocket_generate_critical_css' ) ) {
wp_nonce_ays( '' );
}
$this->process_handler();
wp_safe_redirect( esc_url_raw( wp_get_referer() ) );
die();
}
/**
* Launches the critical CSS generation when activating the async CSS option
*
* @since 2.11
* @author Remy Perona
*
* @see process_handler()
*
* @param array $old_value Previous values for WP Rocket settings.
* @param array $value New values for WP Rocket settings.
*/
public function generate_critical_css_on_activation( $old_value, $value ) {
if ( ! empty( $_POST[ WP_ROCKET_SLUG ] ) && isset( $old_value['async_css'], $value['async_css'] ) && ( $old_value['async_css'] !== $value['async_css'] ) && 1 === (int) $value['async_css'] ) {
$this->process_handler();
}
}
/**
* Stops the critical CSS generation when deactivating the async CSS option and remove the notices
*
* @since 2.11
* @author Remy Perona
*
* @param array $old_value Previous values for WP Rocket settings.
* @param array $value New values for WP Rocket settings.
*/
public function stop_process_on_deactivation( $old_value, $value ) {
if ( ! empty( $_POST[ WP_ROCKET_SLUG ] ) && isset( $old_value['async_css'], $value['async_css'] ) && ( $old_value['async_css'] !== $value['async_css'] ) && 0 === (int) $value['async_css'] ) {
if ( method_exists( $this->process, 'cancel_process' ) ) {
$this->process->cancel_process();
}
delete_transient( 'rocket_critical_css_generation_process_running' );
delete_transient( 'rocket_critical_css_generation_process_complete' );
}
}
/**
* Deletes critical CSS files
*
* @since 2.11
* @author Remy Perona
*/
public function clean_critical_css() {
try {
$directory = new RecursiveDirectoryIterator( $this->critical_css_path, FilesystemIterator::SKIP_DOTS );
} catch ( Exception $e ) {
// no logging yet.
return;
}
try {
$files = new RecursiveIteratorIterator( $directory, RecursiveIteratorIterator::CHILD_FIRST );
} catch ( Exception $e ) {
// no logging yet.
return;
}
foreach ( $files as $file ) {
rocket_direct_filesystem()->delete( $file );
}
}
/**
* Gets all public post types
*
* @since 2.11
* @author Remy Perona
*/
public function get_public_post_types() {
global $wpdb;
$post_types = get_post_types(
array(
'public' => true,
'publicly_queryable' => true,
)
);
$post_types[] = 'page';
/**
* Filters the post types excluded from critical CSS generation
*
* @since 2.11
* @author Remy Perona
*
* @param array $excluded_post_types An array of post types names.
* @return array
*/
$excluded_post_types = apply_filters( 'rocket_cpcss_excluded_post_types', array() );
$post_types = array_diff( $post_types, $excluded_post_types );
$post_types = esc_sql( $post_types );
$post_types = "'" . implode( "','", $post_types ) . "'";
$rows = $wpdb->get_results( // WPCS: unprepared SQL ok.
"
SELECT MAX(ID) as ID, post_type
FROM (
SELECT ID, post_type
FROM $wpdb->posts
WHERE post_type IN ( $post_types )
AND post_status = 'publish'
ORDER BY post_date DESC
) AS posts
GROUP BY post_type"
);
return $rows;
}
/**
* Gets all public taxonomies
*
* @since 2.11
* @author Remy Perona
*/
public function get_public_taxonomies() {
global $wpdb;
$taxonomies = get_taxonomies(
array(
'public' => true,
'publicly_queryable' => true,
)
);
/**
* Filters the taxonomies excluded from critical CSS generation
*
* @since 2.11
* @author Remy Perona
*
* @param array $excluded_taxonomies An array of taxonomies names.
* @return array
*/
$excluded_taxonomies = apply_filters( 'rocket_cpcss_excluded_taxonomies', array(
'post_format',
'product_shipping_class',
) );
$taxonomies = array_diff( $taxonomies, $excluded_taxonomies );
$taxonomies = esc_sql( $taxonomies );
$taxonomies = "'" . implode( "','", $taxonomies ) . "'";
$rows = $wpdb->get_results( // WPCS: unprepared SQL ok.
"
SELECT MAX( term_id ) AS ID, taxonomy
FROM (
SELECT term_id, taxonomy
FROM $wpdb->term_taxonomy
WHERE taxonomy IN ( $taxonomies )
AND count > 0
) AS taxonomies
GROUP BY taxonomy
"
);
return $rows;
}
/**
* Sets the items for which we generate critical CSS
*
* @since 2.11
* @author Remy Perona
*/
public function set_items() {
$page_for_posts = get_option( 'page_for_posts' );
if ( 'page' === get_option( 'show_on_front' ) && ! empty( $page_for_posts ) ) {
$this->items[] = array(
'type' => 'home',
'url' => get_permalink( get_option( 'page_for_posts' ) ),
);
}
$post_types = $this->get_public_post_types();
foreach ( $post_types as $post_type ) {
$this->items[] = array(
'type' => $post_type->post_type,
'url' => get_permalink( $post_type->ID ),
);
}
$taxonomies = $this->get_public_taxonomies();
foreach ( $taxonomies as $taxonomy ) {
$this->items[] = array(
'type' => $taxonomy->taxonomy,
'url' => get_term_link( (int) $taxonomy->ID, $taxonomy->taxonomy ),
);
}
/**
* Filters the array containing the items to send to the critical CSS generator
*
* @since 2.11.4
* @author Remy Perona
*
* @param Array $this->items Array containing the type/url pair for each item to send.
*/
$this->items = apply_filters( 'rocket_cpcss_items', $this->items );
}
/**
* This notice is displayed when the critical CSS generation is running
*
* @since 2.11
* @author Remy Perona
*/
public function critical_css_generation_running_notice() {
// This filter is documented in inc/admin-bar.php.
if ( ! current_user_can( apply_filters( 'rocket_capacity', 'manage_options' ) ) ) {
return;
}
$transient = get_transient( 'rocket_critical_css_generation_process_running' );
if ( ! $transient ) {
return;
}
// Translators: %1$d = number of critical CSS generated, %2$d = total number of critical CSS to generate.
$message = '<p>' . sprintf( __( 'Critical CSS generation is currently running: %1$d of %2$d page types completed. (Refresh this page to view progress)', 'rocket' ), $transient['generated'], $transient['total'] ) . '</p>';
if ( ! empty( $transient['items'] ) ) {
$message .= '<ul>';
foreach ( $transient['items'] as $item ) {
$message .= '<li>' . $item . '</li>';
}
$message .= '</ul>';
}
rocket_notice_html( array(
'status' => 'info',
'message' => $message,
) );
}
/**
* This notice is displayed when the critical CSS generation is complete
*
* @since 2.11
* @author Remy Perona
*/
public function critical_css_generation_complete_notice() {
// This filter is documented in inc/admin-bar.php.
if ( ! current_user_can( apply_filters( 'rocket_capacity', 'manage_options' ) ) ) {
return;
}
$transient = get_transient( 'rocket_critical_css_generation_process_complete' );
if ( ! $transient ) {
return;
}
if ( 0 === $transient['generated'] ) {
$status = 'error';
} elseif ( $transient['generated'] < $transient['total'] ) {
$status = 'warning';
} else {
$status = 'success';
}
// Translators: %1$d = number of critical CSS generated, %2$d = total number of critical CSS to generate.
$message = '<p>' . sprintf( __( 'Critical CSS generation finished for %1$d of %2$d page types.', 'rocket' ), $transient['generated'], $transient['total'] ) . '</p>';
if ( ! empty( $transient['items'] ) ) {
$message .= '<ul>';
foreach ( $transient['items'] as $item ) {
$message .= '<li>' . $item . '</li>';
}
$message .= '</ul>';
}
rocket_notice_html( array(
'status' => $status,
'message' => $message,
) );
delete_transient( 'rocket_critical_css_generation_process_complete' );
}
/**
* This warning is displayed when the critical CSS dir isn't writeable
*
* @since 2.11
* @author Remy Perona
*/
public function warning_critical_css_dir_permissions() {
// This filter is documented in inc/admin-bar.php.
if ( current_user_can( apply_filters( 'rocket_capacity', 'manage_options' ) )
&& ( ! rocket_direct_filesystem()->is_writable( WP_ROCKET_CRITICAL_CSS_PATH ) )
&& ( get_rocket_option( 'async_css', false ) )
&& rocket_valid_key() ) {
$boxes = get_user_meta( $GLOBALS['current_user']->ID, 'rocket_boxes', true );
if ( in_array( __FUNCTION__, (array) $boxes, true ) ) {
return;
}
$message = rocket_notice_writing_permissions( trim( str_replace( ABSPATH, '', WP_ROCKET_CRITICAL_CSS_PATH ), '/' ) );
rocket_notice_html( array(
'status' => 'error',
'dismissible' => '',
'message' => $message,
) );
}
}
/**
* Determines if critical CSS is available for the current page
*
* @since 2.11
* @author Remy Perona
*
* @return bool|string False if critical CSS file doesn't exist, file path otherwise
*/
public function get_current_page_critical_css() {
if ( is_home() && 'page' === get_option( 'show_on_front' ) ) {
$name = 'home.css';
} elseif ( is_front_page() ) {
$name = 'front_page.css';
} elseif ( is_category() ) {
$name = 'category.css';
} elseif ( is_tag() ) {
$name = 'post_tag.css';
} elseif ( is_tax() ) {
$taxonomy = get_queried_object()->term_name;
$name = $taxonomy . '.css';
} elseif ( is_singular() ) {
$post_type = get_post_type();
$name = $post_type . '.css';
} else {
$name = 'front_page.css';
}
$file = $this->critical_css_path . $name;
if ( ! rocket_direct_filesystem()->is_readable( $file ) ) {
$critical_css = get_rocket_option( 'critical_css', '' );
if ( ! empty( $critical_css ) ) {
return 'fallback';
}
return false;
}
return $file;
}
/**
* Defer loading of CSS files
*
* @since 2.10
* @author Remy Perona
*
* @param string $buffer HTML code.
* @return string Updated HTML code
*/
public function async_css( $buffer ) {
if ( ! get_rocket_option( 'async_css' ) ) {
return $buffer;
}
if ( is_rocket_post_excluded_option( 'async_css' ) ) {
return $buffer;
}
if ( ! $this->get_current_page_critical_css() ) {
return $buffer;
}
$excluded_css = array_flip( get_rocket_exclude_async_css() );
// Get all css files with this regex.
preg_match_all( apply_filters( 'rocket_async_css_regex_pattern', '/(?=<link[^>]*\s(rel\s*=\s*[\'"]stylesheet["\']))<link[^>]*\shref\s*=\s*[\'"]([^\'"]+)[\'"](.*)>/iU' ), $buffer, $tags_match );
if ( ! isset( $tags_match[0] ) ) {
return $buffer;
}
$noscripts = '';
foreach ( $tags_match[0] as $i => $tag ) {
// Strip query args.
$path = rocket_extract_url_component( $tags_match[2][ $i ], PHP_URL_PATH );
// Check if this file should be deferred.
if ( isset( $excluded_css[ $path ] ) ) {
continue;
}
$preload = str_replace( 'stylesheet', 'preload', $tags_match[1][ $i ] );
$onload = preg_replace( '~' . preg_quote( $tags_match[3][ $i ], '~' ) . '~iU', ' as="style" onload=""' . $tags_match[3][ $i ] . '>', $tags_match[3][ $i ] );
$tag = str_replace( $tags_match[3][ $i ] . '>', $onload, $tag );
$tag = str_replace( $tags_match[1][ $i ], $preload, $tag );
$tag = str_replace( 'onload=""', 'onload="this.onload=null;this.rel=\'stylesheet\'"', $tag );
$buffer = str_replace( $tags_match[0][ $i ], $tag, $buffer );
$noscripts .= '<noscript>' . $tags_match[0][ $i ] . '</noscript>';
}
$buffer = str_replace( '</body>', $noscripts . '</body>', $buffer );
return $buffer;
}
/**
* Insert critical CSS before combined CSS when option is active
*
* @since 2.11.5
* @author Remy Perona
*
* @param string $buffer HTML output of the page.
* @return string Updated HTML output
*/
public function insert_critical_css_buffer( $buffer ) {
if ( ! get_rocket_option( 'async_css' ) ) {
return $buffer;
}
if ( is_rocket_post_excluded_option( 'async_css' ) ) {
return $buffer;
}
$current_page_critical_css = $this->get_current_page_critical_css();
if ( ! $current_page_critical_css ) {
return $buffer;
}
if ( 'fallback' === $current_page_critical_css ) {
$critical_css_content = get_rocket_option( 'critical_css', '' );
} else {
$critical_css_content = rocket_direct_filesystem()->get_contents( $this->get_current_page_critical_css() );
}
if ( ! $critical_css_content ) {
return $buffer;
}
$buffer = preg_replace( '/<head(.*)>/U', '<head$1><style id="rocket-critical-css">' . wp_strip_all_tags( $critical_css_content ) . '</style>', $buffer, 1 );
return $buffer;
}
/**
* Insert critical CSS in the <head>
*
* @since 2.10
* @author Remy Perona
*/
public function insert_critical_css() {
global $pagenow;
if ( ! get_rocket_option( 'async_css' ) ) {
return;
}
if ( is_rocket_post_excluded_option( 'async_css' ) ) {
return;
}
$current_page_critical_css = $this->get_current_page_critical_css();
if ( ! $current_page_critical_css ) {
return;
}
// Don't apply on wp-login.php/wp-register.php.
if ( 'wp-login.php' === $pagenow || 'wp-register.php' === $pagenow ) {
return;
}
if ( ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) || ( defined( 'DONOTASYNCCSS' ) && DONOTASYNCCSS ) ) {
return;
}
// Don't apply if user is logged-in and cache for logged-in user is off.
if ( is_user_logged_in() && ! get_rocket_option( 'cache_logged_user' ) ) {
return;
}
// This filter is documented in inc/front/process.php.
$rocket_cache_search = apply_filters( 'rocket_cache_search', false );
// Don't apply on search page.
if ( is_search() && ! $rocket_cache_search ) {
return;
}
// Don't apply on excluded pages.
if ( in_array( $_SERVER['REQUEST_URI'], get_rocket_option( 'cache_reject_uri', array() ), true ) ) {
return;
}
// Don't apply on 404 page.
if ( is_404() ) {
return;
}
if ( 'fallback' === $current_page_critical_css ) {
$critical_css_content = get_rocket_option( 'critical_css', '' );
} else {
$critical_css_content = rocket_direct_filesystem()->get_contents( $this->get_current_page_critical_css() );
}
if ( ! $critical_css_content ) {
return;
}
echo '<style id="rocket-critical-css">' . wp_strip_all_tags( $critical_css_content ) . '</style>';
}
/**
* Insert loadCSS script in <head>
*
* @since 2.11.2 Updated loadCSS rel=preload polyfill to version 2.0.1
* @since 2.10
* @author Remy Perona
*/
public function insert_load_css() {
global $pagenow;
if ( ! get_rocket_option( 'async_css' ) ) {
return;
}
if ( is_rocket_post_excluded_option( 'async_css' ) ) {
return;
}
if ( ! $this->get_current_page_critical_css() ) {
return;
}
// Don't apply on wp-login.php/wp-register.php.
if ( 'wp-login.php' === $pagenow || 'wp-register.php' === $pagenow ) {
return;
}
if ( ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) || ( defined( 'DONOTASYNCCSS' ) && DONOTASYNCCSS ) ) {
return;
}
// Don't apply if user is logged-in and cache for logged-in user is off.
if ( is_user_logged_in() && ! get_rocket_option( 'cache_logged_user' ) ) {
return;
}
// This filter is documented in inc/front/process.php.
$rocket_cache_search = apply_filters( 'rocket_cache_search', false );
// Don't apply on search page.
if ( is_search() && ! $rocket_cache_search ) {
return;
}
// Don't apply on excluded pages.
if ( in_array( $_SERVER['REQUEST_URI'], get_rocket_option( 'cache_reject_uri', array() ), true ) ) {
return;
}
// Don't apply on 404 page.
if ( is_404() ) {
return;
}
echo <<<JS
<script>
/*! loadCSS rel=preload polyfill. [c]2017 Filament Group, Inc. MIT License */
(function(w){"use strict";if(!w.loadCSS){w.loadCSS=function(){}}
var rp=loadCSS.relpreload={};rp.support=(function(){var ret;try{ret=w.document.createElement("link").relList.supports("preload")}catch(e){ret=!1}
return function(){return ret}})();rp.bindMediaToggle=function(link){var finalMedia=link.media||"all";function enableStylesheet(){link.media=finalMedia}
if(link.addEventListener){link.addEventListener("load",enableStylesheet)}else if(link.attachEvent){link.attachEvent("onload",enableStylesheet)}
setTimeout(function(){link.rel="stylesheet";link.media="only x"});setTimeout(enableStylesheet,3000)};rp.poly=function(){if(rp.support()){return}
var links=w.document.getElementsByTagName("link");for(var i=0;i<links.length;i++){var link=links[i];if(link.rel==="preload"&&link.getAttribute("as")==="style"&&!link.getAttribute("data-loadcss")){link.setAttribute("data-loadcss",!0);rp.bindMediaToggle(link)}}};if(!rp.support()){rp.poly();var run=w.setInterval(rp.poly,500);if(w.addEventListener){w.addEventListener("load",function(){rp.poly();w.clearInterval(run)})}else if(w.attachEvent){w.attachEvent("onload",function(){rp.poly();w.clearInterval(run)})}}
if(typeof exports!=="undefined"){exports.loadCSS=loadCSS}
else{w.loadCSS=loadCSS}}(typeof global!=="undefined"?global:this))
</script>
JS;
}
}
Zerion Mini Shell 1.0