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<?php
declare(strict_types=1);
namespace WP_Rocket\ThirdParty\Hostings;
use WP_Rocket\Event_Management\Subscriber_Interface;
class LiteSpeed implements Subscriber_Interface {
/**
* Litespeed headers
*
* @var array
*/
private $headers = [];
/**
* Subscribed events for Litespeed.
*
* @since 3.9.2
* @inheritDoc
*/
public static function get_subscribed_events() {
return [
'before_rocket_clean_domain' => 'litespeed_clean_domain',
'before_rocket_clean_file' => 'litespeed_clean_file',
'before_rocket_clean_home' => [ 'litespeed_clean_home', 10, 2 ],
];
}
/**
* Add purge headers to the request
*
* @since 3.9.2
*
* @return void
*/
public function litespeed_send_headers() {
if ( empty( $this->headers ) ) {
return;
}
foreach ( $this->headers as $header ) {
@header( "X-LiteSpeed-Purge: {$header}", false ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
}
}
/**
* Purge all pages in LiteSpeed
*
* @since 3.9.2
*
* @return void
*/
public function litespeed_clean_domain() {
$this->litespeed_header_purge_all();
}
/**
* Purge a specific page
*
* @since 3.9.2
*
* @param string $url The url to purge.
*
* @return void
*/
public function litespeed_clean_file( $url ) {
$this->litespeed_header_purge_url( trailingslashit( $url ) );
}
/**
* Purge the homepage and its pagination
*
* @since 3.9.2
*
* @param string $root The path of home cache file.
* @param string $lang The current lang to purge.
*
* @return void
*/
public function litespeed_clean_home( $root, $lang ) {
$home_url = trailingslashit( get_rocket_i18n_home_url( $lang ) );
$urls = [
'home' => trailingslashit( get_rocket_i18n_home_url( $lang ) ),
'pagination' => $home_url . trailingslashit( $GLOBALS['wp_rewrite']->pagination_base ),
];
array_walk(
$urls,
function( &$url ) {
$url = wp_parse_url( $url, PHP_URL_PATH );
}
);
$urls = array_filter( $urls );
if ( empty( $urls ) ) {
return;
}
$this->send_header( 'X-LiteSpeed-Purge: ' . $urls['home'] );
$this->send_header( 'X-LiteSpeed-Purge: ' . $urls['pagination'] );
}
/**
* Set LiteSpeed header for the URL to purge
*
* @since 3.9.2
*
* @param string $url The URL to purge.
*
* @return void
*/
private function litespeed_header_purge_url( $url ) {
$path = wp_parse_url( $url, PHP_URL_PATH );
if ( ! $path ) {
return;
}
$header = 'X-LiteSpeed-Purge: ' . $path;
$this->send_header( $header );
}
/**
* Set LiteSpeed header to purge all
*
* @since 3.9.2
*
* @return void
*/
private function litespeed_header_purge_all() {
$this->send_header( 'X-LiteSpeed-Purge: *', true );
}
/**
* If header is not in header_list() send it
*
* @since 3.9.2
*
* @param string $header To be sent.
* @param boolean $replace header.
*
* @return void
*/
private function send_header( $header, $replace = false ) {
if ( headers_sent() || in_array( $header, headers_list(), true ) ) {
return;
}
$this->headers[] = $header;
@header( $header, $replace ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
}
}