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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Admin
*/
/**
* Handles the request for getting the Ryte status.
*/
class WPSEO_OnPage implements WPSEO_WordPress_Integration {
/**
* The name of the user meta key for storing the dismissed status.
*
* @var string
*/
const USER_META_KEY = 'wpseo_dismiss_onpage';
/**
* Is the request started by pressing the fetch button.
*
* @var boolean
*/
private $is_manual_request = false;
/**
* Constructs the object.
*/
public function __construct() {
$this->catch_redo_listener();
}
/**
* Sets up the hooks.
*
* @return void
*/
public function register_hooks() {
// Adds admin notice if necessary.
add_filter( 'admin_init', array( $this, 'show_notice' ) );
if ( ! self::is_active() ) {
return;
}
// Adds weekly schedule to the cron job schedules.
add_filter( 'cron_schedules', array( $this, 'add_weekly_schedule' ) );
// Sets the action for the Ryte fetch.
add_action( 'wpseo_onpage_fetch', array( $this, 'fetch_from_onpage' ) );
}
/**
* Shows a notice when the website is not indexable.
*
* @return void
*/
public function show_notice() {
$notification = $this->get_indexability_notification();
$notification_center = Yoast_Notification_Center::get();
if ( $this->should_show_notice() ) {
$notification_center->add_notification( $notification );
return;
}
$notification_center->remove_notification( $notification );
}
/**
* Determines if we can use the functionality.
*
* @return bool True if this functionality can be used.
*/
public static function is_active() {
if ( wp_doing_ajax() ) {
return false;
}
if ( ! WPSEO_Options::get( 'onpage_indexability' ) ) {
return false;
}
return true;
}
/**
* Hooks to run on plugin activation.
*/
public function activate_hooks() {
if ( $this->get_option()->is_enabled() ) {
$this->schedule_cron();
return;
}
$this->unschedule_cron();
}
/**
* Adds a weekly cron schedule.
*
* @param array $schedules Currently scheduled items.
*
* @return array Enriched list of schedules.
*/
public function add_weekly_schedule( $schedules ) {
if ( ! is_array( $schedules ) ) {
$schedules = array();
}
$schedules['weekly'] = array(
'interval' => WEEK_IN_SECONDS,
'display' => __( 'Once Weekly', 'wordpress-seo' ),
);
return $schedules;
}
/**
* Fetches the data from Ryte.
*
* @return bool True if this has been run.
*/
public function fetch_from_onpage() {
$onpage_option = $this->get_option();
if ( ! $onpage_option->should_be_fetched() ) {
return false;
}
$new_status = $this->request_indexability();
if ( false === $new_status ) {
return false;
}
// Updates the timestamp in the option.
$onpage_option->set_last_fetch( time() );
// The currently indexability status.
$old_status = $onpage_option->get_status();
$onpage_option->set_status( $new_status );
$onpage_option->save_option();
// Check if the status has been changed.
if ( $old_status !== $new_status && $new_status !== WPSEO_OnPage_Option::CANNOT_FETCH ) {
$this->notify_admins();
}
return true;
}
/**
* Retrieves the option to use.
*
* @return WPSEO_OnPage_Option The option.
*/
protected function get_option() {
return new WPSEO_OnPage_Option();
}
/**
* Builds the indexability notification.
*
* @return Yoast_Notification The notification.
*/
private function get_indexability_notification() {
$notice = sprintf(
/* translators: 1: opens a link to a related knowledge base article. 2: closes the link */
__( '%1$sYour homepage cannot be indexed by search engines%2$s. This is very bad for SEO and should be fixed.', 'wordpress-seo' ),
'<a href="' . WPSEO_Shortlinker::get( 'https://yoa.st/onpageindexerror' ) . '" target="_blank">',
'</a>'
);
return new Yoast_Notification(
$notice,
array(
'type' => Yoast_Notification::ERROR,
'id' => 'wpseo-dismiss-onpageorg',
'capabilities' => 'wpseo_manage_options',
)
);
}
/**
* Sends a request to Ryte to get the indexability.
*
* @return int|bool The indexability value.
*/
protected function request_indexability() {
$parameters = array();
if ( $this->wordfence_protection_enabled() ) {
$parameters['wf_strict'] = 1;
}
$request = new WPSEO_OnPage_Request();
$response = $request->do_request( get_option( 'home' ), $parameters );
if ( isset( $response['is_indexable'] ) ) {
return (int) $response['is_indexable'];
}
return WPSEO_OnPage_Option::CANNOT_FETCH;
}
/**
* Should the notice being given?
*
* @return bool True if a notice should be shown.
*/
protected function should_show_notice() {
if ( ! $this->get_option()->is_enabled() ) {
return false;
}
// If development mode is on or the blog is not public, just don't show this notice.
if ( WPSEO_Utils::is_development_mode() || ( '0' === get_option( 'blog_public' ) ) ) {
return false;
}
return $this->get_option()->get_status() === WPSEO_OnPage_Option::IS_NOT_INDEXABLE;
}
/**
* Notifies the admins.
*
* @return void
*/
protected function notify_admins() {
/*
* Let's start showing the notices to all admins by removing the hide-notice meta data for each admin resulting
* in popping up the notice again.
*/
delete_metadata( 'user', 0, self::USER_META_KEY, '', true );
}
/**
* Schedules the cronjob to get the new indexibility status.
*
* @return void
*/
private function schedule_cron() {
if ( wp_next_scheduled( 'wpseo_onpage_fetch' ) ) {
return;
}
wp_schedule_event( time(), 'weekly', 'wpseo_onpage_fetch' );
}
/**
* Unschedules the cronjob to get the new indexibility status.
*
* @return void
*/
private function unschedule_cron() {
if ( ! wp_next_scheduled( 'wpseo_onpage_fetch' ) ) {
return;
}
wp_clear_scheduled_hook( 'wpseo_onpage_fetch' );
}
/**
* Redo the fetch request for Ryte.
*
* @return void
*/
private function catch_redo_listener() {
if ( ! self::is_active() ) {
return;
}
if ( filter_input( INPUT_GET, 'wpseo-redo-onpage' ) === '1' ) {
$this->is_manual_request = true;
add_action( 'admin_init', array( $this, 'fetch_from_onpage' ) );
}
}
/**
* Checks if WordFence protects the site against 'fake' Google crawlers.
*
* @return boolean True if WordFence protects the site.
*/
private function wordfence_protection_enabled() {
if ( ! class_exists( 'wfConfig' ) ) {
return false;
}
if ( ! method_exists( 'wfConfig', 'get' ) ) {
return false;
}
return (bool) wfConfig::get( 'blockFakeBots' );
}
}
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