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<?php
declare(strict_types=1);
namespace WP_Rocket\Engine\Preload;
use WP_Rocket\Admin\Options_Data;
use WP_Rocket\Event_Management\Subscriber_Interface;
class PreloadSubscriber implements Subscriber_Interface {
/**
* Homepage Preload instance
*
* @var Homepage
*/
private $homepage_preloader;
/**
* WP Rocket Options instance.
*
* @var Options_Data
*/
private $options;
/**
* Constructor.
*
* @param Homepage $homepage_preloader Homepage Preload instance.
* @param Options_Data $options WP Rocket Options instance.
*/
public function __construct( Homepage $homepage_preloader, Options_Data $options ) {
$this->homepage_preloader = $homepage_preloader;
$this->options = $options;
}
/**
* Return an array of events that this subscriber wants to listen to.
*
* @return array
*/
public static function get_subscribed_events() {
return [
'admin_notices' => [
[ 'notice_preload_triggered' ],
[ 'notice_preload_running' ],
[ 'notice_preload_complete' ],
],
'admin_post_rocket_stop_preload' => [ 'do_admin_post_stop_preload' ],
'pagely_cache_purge_after' => [ 'run_preload', 11 ],
'update_option_' . WP_ROCKET_SLUG => [
[ 'maybe_launch_preload', 11, 2 ],
[ 'maybe_cancel_preload', 10, 2 ],
],
'rocket_after_preload_after_purge_cache' => [
[ 'maybe_preload_mobile_homepage', 10, 3 ],
],
'admin_post_rocket_rollback' => [ 'stop_homepage_preload', 9 ],
'wp_rocket_upgrade' => [ 'stop_homepage_preload', 9 ],
'rocket_options_changed' => 'preload_after_options_change',
'rocket_after_clean_used_css' => 'preload_after_clean_used_css',
];
}
/**
* Launches the homepage preload
*
* @since 3.2
*
* @param string $lang The language code to preload.
*
* @return void
*/
protected function preload( $lang = '' ) {
if ( $lang ) {
$urls = (array) get_rocket_i18n_home_url( $lang );
} else {
$urls = get_rocket_i18n_uri();
}
$this->homepage_preloader->preload( $urls );
}
/**
* Launches the homepage preload if the option is active
*
* @since 3.2
*
* @return void
*/
public function run_preload() {
if ( ! $this->options->get( 'manual_preload' ) ) {
return;
}
delete_transient( 'rocket_preload_errors' );
$this->preload();
}
/**
* Cancels any preload currently running if the option is deactivated
*
* @since 3.2
*
* @param array $old_value Previous option values.
* @param array $value New option values.
*
* @return void
*/
public function maybe_cancel_preload( $old_value, $value ) {
if ( isset( $old_value['manual_preload'], $value['manual_preload'] ) && $old_value['manual_preload'] !== $value['manual_preload'] && 0 === (int) $value['manual_preload'] ) {
delete_transient( 'rocket_preload_errors' );
$this->homepage_preloader->cancel_preload();
}
}
/**
* Launches the preload if the option is activated
*
* @since 3.2
*
* @param array $old_value Previous option values.
* @param array $value New option values.
*
* @return void
*/
public function maybe_launch_preload( $old_value, $value ) {
if ( $this->homepage_preloader->is_process_running() ) {
return;
}
// These values are ignored because they don't impact the cache content.
$ignored_options = [
'cache_mobile' => true,
'purge_cron_interval' => true,
'purge_cron_unit' => true,
'sitemap_preload' => true,
'sitemaps' => true,
'database_revisions' => true,
'database_auto_drafts' => true,
'database_trashed_posts' => true,
'database_spam_comments' => true,
'database_trashed_comments' => true,
'database_all_transients' => true,
'database_optimize_tables' => true,
'schedule_automatic_cleanup' => true,
'automatic_cleanup_frequency' => true,
'do_cloudflare' => true,
'cloudflare_email' => true,
'cloudflare_api_key' => true,
'cloudflare_zone_id' => true,
'cloudflare_devmode' => true,
'cloudflare_auto_settings' => true,
'cloudflare_old_settings' => true,
'heartbeat_admin_behavior' => true,
'heartbeat_editor_behavior' => true,
'varnish_auto_purge' => true,
'analytics_enabled' => true,
'sucury_waf_cache_sync' => true,
'sucury_waf_api_key' => true,
];
// Create 2 arrays to compare.
$old_value_diff = array_diff_key( $old_value, $ignored_options );
$value_diff = array_diff_key( $value, $ignored_options );
// If it's different, preload.
if ( md5( wp_json_encode( $old_value_diff ) ) === md5( wp_json_encode( $value_diff ) ) ) {
return;
}
if ( isset( $value['manual_preload'] ) && 1 === (int) $value['manual_preload'] ) {
$this->preload();
}
}
/**
* After automatically preloading the homepage (after purging the cache), also preload the homepage for mobile.
*
* @since 3.5
*
* @param string $home_url URL to the homepage being preloaded.
* @param string $lang The lang of the homepage.
* @param array $args Arguments used for the preload request.
*
* @return void
*/
public function maybe_preload_mobile_homepage( $home_url, $lang, $args ) {
if ( ! $this->homepage_preloader->is_mobile_preload_enabled() ) {
return;
}
if ( empty( $args['user-agent'] ) ) {
$args['user-agent'] = 'WP Rocket/Homepage_Preload_After_Purge_Cache';
}
$args['user-agent'] = $this->homepage_preloader->get_mobile_user_agent_prefix() . ' ' . $args['user-agent'];
wp_safe_remote_get( $home_url, $args );
}
/**
* This notice is displayed when the preload is triggered from a different page than WP Rocket settings page
*
* @since 3.2
*
* @return void
*/
public function notice_preload_triggered() {
if ( ! current_user_can( 'rocket_preload_cache' ) ) {
return;
}
$screen = get_current_screen();
if ( 'settings_page_wprocket' === $screen->id ) {
return;
}
if ( ! $this->options->get( 'manual_preload', 0 ) ) {
return;
}
if ( false === get_transient( 'rocket_preload_triggered' ) ) {
return;
}
delete_transient( 'rocket_preload_triggered' );
$message = __( 'Preload: WP Rocket has started preloading your website.', 'rocket' );
if ( current_user_can( 'rocket_manage_options' ) ) {
$message .= ' ' . sprintf(
// Translators: %1$s = opening link tag, %2$s = closing link tag.
__( 'Go to the %1$sWP Rocket settings%2$s page to track progress.', 'rocket' ),
'<a href="' . esc_url( admin_url( 'options-general.php?page=' . WP_ROCKET_PLUGIN_SLUG ) ) . '">',
'</a>'
);
}
\rocket_notice_html(
[
'status' => 'info',
'message' => $message,
]
);
}
/**
* This notice is displayed when the preload is running
*
* @since 3.2
*
* @return void
*/
public function notice_preload_running() {
if ( ! current_user_can( 'rocket_preload_cache' ) ) {
return;
}
$screen = get_current_screen();
if ( 'settings_page_wprocket' !== $screen->id ) {
return;
}
$homepage_count = get_transient( 'rocket_homepage_preload_running' );
$sitemap_count = get_transient( 'rocket_sitemap_preload_running' );
if ( false === $homepage_count && false === $sitemap_count ) {
return;
}
$running = $homepage_count + $sitemap_count;
$status = 'info';
// translators: %1$s = Number of pages preloaded.
$message = '<p>' . sprintf( _n( 'Preload: %1$s uncached page has now been preloaded. (refresh to see progress)', 'Preload: %1$s uncached pages have now been preloaded. (refresh to see progress)', $running, 'rocket' ), number_format_i18n( $running ) );
$message .= ' <em> - (' . date_i18n( get_option( 'date_format' ) ) . ' @ ' . date_i18n( get_option( 'time_format' ) ) . ') </em></p>';
if ( defined( 'WP_ROCKET_DEBUG' ) && WP_ROCKET_DEBUG ) {
$errors = get_transient( 'rocket_preload_errors' );
if ( false !== $errors ) {
$status = 'warning';
$message .= '<p>' . _n( 'The following error happened during gathering of the URLs to preload:', 'The following errors happened during gathering of the URLs to preload:', count( $errors['errors'] ), 'rocket' ) . '</p>';
foreach ( $errors['errors'] as $error ) {
$message .= '<p>' . $error . '</p>';
}
}
}
\rocket_notice_html(
[
'status' => $status,
'message' => $message,
'dismissible' => 'notice-preload-running',
'action' => 'stop_preload',
]
);
}
/**
* This notice is displayed after the sitemap preload is complete
*
* @since 3.2
*
* @return void
*/
public function notice_preload_complete() {
if ( ! current_user_can( 'rocket_preload_cache' ) ) {
return;
}
$screen = get_current_screen();
if ( 'settings_page_wprocket' !== $screen->id ) {
return;
}
$result = get_transient( 'rocket_preload_complete' );
if ( false === $result ) {
return;
}
$result_timestamp = get_transient( 'rocket_preload_complete_time' );
if ( false === $result_timestamp ) {
return;
}
delete_transient( 'rocket_preload_complete' );
delete_transient( 'rocket_preload_errors' );
delete_transient( 'rocket_preload_complete_time' );
// translators: %d is the number of pages preloaded.
$notice_message = sprintf( __( 'Preload complete: %d pages have been cached.', 'rocket' ), $result );
$notice_message .= ' <em> (' . $result_timestamp . ') </em>';
\rocket_notice_html(
[
'message' => $notice_message,
]
);
}
/**
* Stops currently running preload from the notice action button
*
* @since 3.2
*
* @return void
*/
public function do_admin_post_stop_preload() {
if ( ! isset( $_GET['_wpnonce'] ) || ! wp_verify_nonce( sanitize_key( $_GET['_wpnonce'] ), 'rocket_stop_preload' ) ) {
wp_nonce_ays( '' );
}
if ( ! current_user_can( 'rocket_preload_cache' ) ) {
wp_safe_redirect( wp_get_referer() );
die();
}
$this->homepage_preloader->cancel_preload();
wp_safe_redirect( wp_get_referer() );
die();
}
/**
* Stops homepage preload.
*
* @since 3.10
*
* @return void
*/
public function stop_homepage_preload() {
$this->homepage_preloader->cancel_preload();
}
/**
* Preloads the homepage after changing the options
*
* @since 3.11
*
* @param array $value An array of submitted values for the settings.
*
* @return void
*/
public function preload_after_options_change( $value ) {
$mobile = false;
if (
isset( $value['do_caching_mobile_files'] )
&&
1 === $value['do_caching_mobile_files']
) {
$mobile = true;
}
$this->preload_homepage( $mobile );
}
/**
* Preloads the homepage after cleaning the used CSS in the database
*
* @since 3.11
*
* @return void
*/
public function preload_after_clean_used_css() {
$mobile = false;
if ( $this->options->get( 'do_caching_mobile_files', 0 ) ) {
$mobile = true;
}
$this->preload_homepage( $mobile );
}
/**
* Preloads the homepage (desktop & mobile if enabled)
*
* @since 3.11
*
* @param bool $mobile True to preload the mobile version, false otherwise.
*
* @return void
*/
private function preload_homepage( $mobile = false ) {
wp_safe_remote_get(
home_url(),
[
'timeout' => 0.01,
'blocking' => false,
'user-agent' => 'WP Rocket/Homepage Preload',
'sslverify' => apply_filters( 'https_local_ssl_verify', false ), // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
]
);
if ( $mobile ) {
wp_safe_remote_get(
home_url(),
[
'timeout' => 0.01,
'blocking' => false,
'user-agent' => $this->homepage_preloader->get_mobile_user_agent_prefix() . ' WP Rocket/Homepage Preload',
'sslverify' => apply_filters( 'https_local_ssl_verify', false ), // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
]
);
}
}
}