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<?php
/**
* Purge handlers for X-LiteSpeed-Purge.
*
* @since 1.1.3
* @since 2.2 Refactored. Changed access from public to private for most functions and class variables.
* @package LiteSpeed
*/
namespace LiteSpeed;
defined( 'WPINC' ) || exit();
/**
* Class Purge
*/
class Purge extends Base {
const LOG_TAG = '๐งน';
/**
* Public purge tags for X-LiteSpeed-Purge.
*
* @var array<int,string>
*/
protected $_pub_purge = [];
/**
* Public purge tags for X-LiteSpeed-Purge2.
*
* @var array<int,string>
*/
protected $_pub_purge2 = [];
/**
* Private purge tags for X-LiteSpeed-Purge (private section).
*
* @var array<int,string>
*/
protected $_priv_purge = [];
/**
* Whether to purge only current URL (QS helper).
*
* @var bool
*/
protected $_purge_single = false;
const X_HEADER = 'X-LiteSpeed-Purge';
const X_HEADER2 = 'X-LiteSpeed-Purge2';
const DB_QUEUE = 'queue';
const DB_QUEUE2 = 'queue2';
const TYPE_PURGE_ALL = 'purge_all';
const TYPE_PURGE_ALL_LSCACHE = 'purge_all_lscache';
const TYPE_PURGE_ALL_CSSJS = 'purge_all_cssjs';
const TYPE_PURGE_ALL_LOCALRES = 'purge_all_localres';
const TYPE_PURGE_ALL_CCSS = 'purge_all_ccss';
const TYPE_PURGE_ALL_UCSS = 'purge_all_ucss';
const TYPE_PURGE_ALL_LQIP = 'purge_all_lqip';
const TYPE_PURGE_ALL_VPI = 'purge_all_vpi';
const TYPE_PURGE_ALL_AVATAR = 'purge_all_avatar';
const TYPE_PURGE_ALL_OBJECT = 'purge_all_object';
const TYPE_PURGE_ALL_OPCACHE = 'purge_all_opcache';
const TYPE_PURGE_FRONT = 'purge_front';
const TYPE_PURGE_UCSS = 'purge_ucss';
const TYPE_PURGE_FRONTPAGE = 'purge_frontpage';
const TYPE_PURGE_PAGES = 'purge_pages';
const TYPE_PURGE_ERROR = 'purge_error';
/**
* Init hooks.
*
* @since 3.0
* @return void
*/
public function init() {
$purge_post_events = apply_filters(
'litespeed_purge_post_events',
[
'delete_post',
'wp_trash_post',
'wp_update_comment_count',
]
);
foreach ( $purge_post_events as $event ) {
add_action( $event, [ $this, 'purge_post' ] );
}
// Purge post only when status is/was publish.
add_action( 'transition_post_status', [ $this, 'purge_publish' ], 10, 3 );
add_action( 'wp_update_comment_count', [ $this, 'purge_feeds' ] );
if ( $this->conf( self::O_OPTM_UCSS ) ) {
add_action( 'edit_post', __NAMESPACE__ . '\Purge::purge_ucss' );
}
}
/**
* Only purge publish related status post.
*
* @since 3.0
* @param string $new_status New status.
* @param string $old_status Old status.
* @param \WP_Post $post Post object.
* @return void
*/
public function purge_publish( $new_status, $old_status, $post ) {
if ( 'publish' !== $new_status && 'publish' !== $old_status ) {
return;
}
$this->purge_post( $post->ID );
}
/**
* Handle all request actions from main cls.
*
* @since 1.8
* @since 7.6 Add VPI clear.
* @access public
*/
public function handler() {
$type = Router::verify_type();
switch ( $type ) {
case self::TYPE_PURGE_ALL:
$this->_purge_all();
break;
case self::TYPE_PURGE_ALL_LSCACHE:
$this->_purge_all_lscache();
break;
case self::TYPE_PURGE_ALL_CSSJS:
$this->_purge_all_cssjs();
break;
case self::TYPE_PURGE_ALL_LOCALRES:
$this->_purge_all_localres();
break;
case self::TYPE_PURGE_ALL_CCSS:
$this->_purge_all_ccss();
break;
case self::TYPE_PURGE_ALL_UCSS:
$this->_purge_all_ucss();
break;
case self::TYPE_PURGE_ALL_LQIP:
$this->_purge_all_lqip();
break;
case self::TYPE_PURGE_ALL_VPI:
$this->_purge_all_vpi();
break;
case self::TYPE_PURGE_ALL_AVATAR:
$this->_purge_all_avatar();
break;
case self::TYPE_PURGE_ALL_OBJECT:
$this->_purge_all_object();
break;
case self::TYPE_PURGE_ALL_OPCACHE:
$this->purge_all_opcache();
break;
case self::TYPE_PURGE_FRONT:
$this->_purge_front();
break;
case self::TYPE_PURGE_UCSS:
$this->_purge_ucss();
break;
case self::TYPE_PURGE_FRONTPAGE:
$this->_purge_frontpage();
break;
case self::TYPE_PURGE_PAGES:
$this->_purge_pages();
break;
case ( 0 === strpos( $type, self::TYPE_PURGE_ERROR ) ):
$this->_purge_error( substr( $type, strlen( self::TYPE_PURGE_ERROR ) ) );
break;
default:
break;
}
Admin::redirect();
}
/**
* Shortcut to purge all lscache.
*
* @since 1.0.0
* @param string|false $reason Optional reason to log.
* @return void
*/
public static function purge_all( $reason = false ) {
self::cls()->_purge_all( $reason );
}
/**
* Purge all caches (LSCache/CSS/JS/localres/object/opcache).
*
* @since 2.2
* @param string|false $reason Optional log string.
* @return void
*/
private function _purge_all( $reason = false ) {
$this->_purge_all_lscache( true );
$this->_purge_all_cssjs( true );
$this->_purge_all_localres( true );
$this->_purge_all_object( true );
$this->purge_all_opcache( true );
if ( $this->conf( self::O_CDN_CLOUDFLARE_CLEAR ) ) {
CDN\Cloudflare::purge_all( 'Purge All' );
}
$reason = is_string( $reason ) ? "( $reason )" : '';
self::debug( 'Purge all ' . $reason, 3 );
$msg = __( 'Purged all caches successfully.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
do_action( 'litespeed_purged_all' );
}
/**
* Alerts LiteSpeed Web Server to purge all pages.
*
* @since 2.2
* @param bool $silence If true, don't show admin notice.
* @return void
*/
private function _purge_all_lscache( $silence = false ) {
$this->_add( '*' );
do_action( 'litespeed_purged_all_lscache' );
if ( ! $silence ) {
$msg = __( 'Notified LiteSpeed Web Server to purge all LSCache entries.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
}
/**
* Delete all critical CSS.
*
* @since 2.3
* @param bool $silence If true, don't show admin notice.
* @return void
*/
private function _purge_all_ccss( $silence = false ) {
do_action( 'litespeed_purged_all_ccss' );
$this->cls( 'CSS' )->rm_cache_folder( 'ccss' );
$this->cls( 'Data' )->url_file_clean( 'ccss' );
if ( ! $silence ) {
$msg = __( 'Cleaned all Critical CSS files.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
}
/**
* Delete all unique CSS.
*
* @since 2.3
* @param bool $silence If true, don't show admin notice.
* @return void
*/
private function _purge_all_ucss( $silence = false ) {
do_action( 'litespeed_purged_all_ucss' );
$this->cls( 'CSS' )->rm_cache_folder( 'ucss' );
$this->cls( 'Data' )->url_file_clean( 'ucss' );
if ( ! $silence ) {
$msg = __( 'Cleaned all Unique CSS files.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
}
/**
* Purge one UCSS by URL or post ID.
*
* @since 4.5
* @param int|string $post_id_or_url Post ID or URL.
* @return void
*/
public static function purge_ucss( $post_id_or_url ) {
self::debug( 'Purge a single UCSS: ' . $post_id_or_url );
// If is post_id, generate URL.
if ( ! preg_match( '/\D/', (string) $post_id_or_url ) ) {
$post_id_or_url = get_permalink( (int) $post_id_or_url );
}
$post_id_or_url = untrailingslashit( (string) $post_id_or_url );
$existing_url_files = Data::cls()->mark_as_expired( $post_id_or_url, true );
if ( $existing_url_files ) {
self::cls( 'UCSS' )->add_to_q( $existing_url_files );
}
}
/**
* Delete all LQIP images.
*
* @since 3.0
* @param bool $silence If true, don't show admin notice.
* @return void
*/
private function _purge_all_lqip( $silence = false ) {
do_action( 'litespeed_purged_all_lqip' );
$this->cls( 'Placeholder' )->rm_cache_folder( 'lqip' );
if ( ! $silence ) {
$msg = __( 'Cleaned all LQIP files.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
}
/**
* Delete all VPI data generated
*
* @since 7.6
* @param bool $silence If true, don't show admin notice.
* @return void
* @access private
*/
private function _purge_all_vpi( $silence = false ) {
global $wpdb;
do_action( 'litespeed_purged_all_vpi' );
$wpdb->query( // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
$wpdb->prepare(
'DELETE FROM `' . $wpdb->postmeta . '` WHERE meta_key = %s',
VPI::POST_META
)
);
$wpdb->query( // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
$wpdb->prepare(
'DELETE FROM `' . $wpdb->postmeta . '` WHERE meta_key = %s',
VPI::POST_META_MOBILE
)
);
$this->cls( 'Placeholder' )->rm_cache_folder( 'vpi' );
if ( !$silence ) {
$msg = __( 'Cleaned all VPI data.', 'litespeed-cache' );
!defined( 'LITESPEED_PURGE_SILENT' ) && Admin_Display::success( $msg );
}
}
/**
* Delete all avatar images
*
* @since 3.0
* @param bool $silence If true, don't show admin notice.
* @return void
*/
private function _purge_all_avatar( $silence = false ) {
do_action( 'litespeed_purged_all_avatar' );
// Clear Database table
$this->cls( 'Data' )->table_truncate( 'avatar' );
// Remove the folder
$this->cls( 'Avatar' )->rm_cache_folder( 'avatar' );
if ( ! $silence ) {
$msg = __( 'Cleaned all Gravatar files.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
}
/**
* Delete all localized resources.
*
* @since 3.3
* @param bool $silence If true, don't show admin notice.
* @return void
*/
private function _purge_all_localres( $silence = false ) {
do_action( 'litespeed_purged_all_localres' );
$this->_add( Tag::TYPE_LOCALRES );
if ( ! $silence ) {
$msg = __( 'Cleaned all localized resource entries.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
}
/**
* Purge CSS/JS assets and related LSCache entries.
*
* @since 1.2.2
* @param bool $silence If true, don't show admin notice.
* @return void
*/
private function _purge_all_cssjs( $silence = false ) {
if ( wp_doing_cron() || defined( 'LITESPEED_DID_send_headers' ) ) {
self::debug( 'โ Bypassed cssjs delete as header sent (lscache purge after this point will fail) or doing cron' );
return;
}
$this->_purge_all_lscache( $silence ); // Purge CSSJS must purge lscache too to avoid 404
do_action( 'litespeed_purged_all_cssjs' );
Optimize::update_option( Optimize::ITEM_TIMESTAMP_PURGE_CSS, time() );
$this->_add( Tag::TYPE_MIN );
$this->cls( 'CSS' )->rm_cache_folder( 'css' );
$this->cls( 'CSS' )->rm_cache_folder( 'js' );
$this->cls( 'Data' )->url_file_clean( 'css' );
$this->cls( 'Data' )->url_file_clean( 'js' );
// Clear UCSS queue as it used combined CSS to generate.
$this->clear_q( 'ucss', true );
if ( ! $silence ) {
$msg = __( 'Notified LiteSpeed Web Server to purge CSS/JS entries.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
}
/**
* Purge opcode cache.
*
* @since 1.8.2
* @since 7.3 Added test for opcode cache restriction.
* @param bool $silence If true, don't show admin notice.
* @return bool True on success.
*/
public function purge_all_opcache( $silence = false ) {
if ( ! Router::opcache_enabled() ) {
self::debug( 'โ Failed to reset OPcache due to OPcache not enabled' );
if ( ! $silence ) {
$msg = __( 'OPcache is not enabled.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::error( $msg );
}
}
return false;
}
if ( Router::opcache_restricted( __FILE__ ) ) {
self::debug( 'โ Failed to reset OPcache due to OPcache is restricted. File requesting the clear is not allowed.' );
if ( ! $silence ) {
$msg = sprintf( __( 'OPcache is restricted by %s setting.', 'litespeed-cache' ), '<code>restrict_api</code>' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::error( $msg );
}
}
return false;
}
if ( ! opcache_reset() ) {
self::debug( 'โ Reset OPcache not worked' );
if ( ! $silence ) {
$msg = __( 'Reset the OPcache failed.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
return false;
}
do_action( 'litespeed_purged_all_opcache' );
self::debug( 'Reset OPcache' );
if ( ! $silence ) {
$msg = __( 'Reset the entire OPcache successfully.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
return true;
}
/**
* Purge object cache (public wrapper).
*
* @since 3.4
* @param bool $silence If true, don't show admin notice.
* @return void
*/
public static function purge_all_object( $silence = true ) {
self::cls()->_purge_all_object( $silence );
}
/**
* Purge object cache.
*
* @since 1.8
* @param bool $silence If true, don't show admin notice.
* @return bool True on success.
*/
private function _purge_all_object( $silence = false ) {
if ( ! defined( 'LSCWP_OBJECT_CACHE' ) ) {
self::debug( 'Failed to flush object cache due to object cache not enabled' );
if ( ! $silence ) {
$msg = __( 'Object cache is not enabled.', 'litespeed-cache' );
Admin_Display::error( $msg );
}
return false;
}
do_action( 'litespeed_purged_all_object' );
$this->cls( 'Object_Cache' )->flush();
self::debug( 'Flushed object cache' );
if ( ! $silence ) {
$msg = __( 'Purge all object caches successfully.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
return true;
}
/**
* Add public purge tags for current request.
*
* @since 1.1.3
* @param string|array<int,string> $tags Tags to add.
* @param bool $purge2 Whether to send via X-LiteSpeed-Purge2.
* @return void
*/
public static function add( $tags, $purge2 = false ) {
self::cls()->_add( $tags, $purge2 );
}
/**
* Add tags to purge list.
*
* @since 2.2
* @param string|array<int,string> $tags Tags.
* @param bool $purge2 Use Purge2 header.
* @return void
*/
private function _add( $tags, $purge2 = false ) {
if ( ! is_array( $tags ) ) {
$tags = [ $tags ];
}
$tags = $this->_prepend_bid( $tags );
if ( ! array_diff( $tags, $purge2 ? $this->_pub_purge2 : $this->_pub_purge ) ) {
return;
}
if ( $purge2 ) {
$this->_pub_purge2 = array_unique( array_merge( $this->_pub_purge2, $tags ) );
} else {
$this->_pub_purge = array_unique( array_merge( $this->_pub_purge, $tags ) );
}
self::debug( 'added ' . implode( ',', $tags ) . ( $purge2 ? ' [Purge2]' : '' ), 8 );
// Send purge header immediately or queue if headers already sent or delayed.
$curr_built = $this->_build( $purge2 );
if ( defined( 'LITESPEED_CLI' ) ) {
self::debug( 'CLI request, queue stored: ' . $curr_built );
} else {
if ( ! headers_sent() ) {
header( $curr_built );
}
if ( wp_doing_cron() || defined( 'LITESPEED_DID_send_headers' ) || apply_filters( 'litespeed_delay_purge', false ) ) {
self::update_option( $purge2 ? self::DB_QUEUE2 : self::DB_QUEUE, $curr_built );
self::debug( 'Output existed, queue stored: ' . $curr_built );
}
self::debug( $curr_built );
}
}
/**
* Add private purge tags for current request.
*
* @since 1.1.3
* @param string|array<int,string> $tags Tags.
* @return void
*/
public static function add_private( $tags ) {
self::cls()->_add_private( $tags );
}
/**
* Add private ESI tag to purge list.
*
* @since 3.0
* @param string $tag ESI tag.
* @return void
*/
public static function add_private_esi( $tag ) {
self::add_private( Tag::TYPE_ESI . $tag );
}
/**
* Add private all tag to purge list.
*
* @since 3.0
* @return void
*/
public static function add_private_all() {
self::add_private( '*' );
}
/**
* Add private purge tags.
*
* @since 2.2
* @param string|array<int,string> $tags Tags.
* @return void
*/
private function _add_private( $tags ) {
if ( ! is_array( $tags ) ) {
$tags = [ $tags ];
}
$tags = $this->_prepend_bid( $tags );
if ( ! array_diff( $tags, $this->_priv_purge ) ) {
return;
}
self::debug( 'added [private] ' . implode( ',', $tags ), 3 );
$this->_priv_purge = array_unique( array_merge( $this->_priv_purge, $tags ) );
// Send header immediately or skip if sent.
$built = $this->_build();
if ( $built && ! headers_sent() ) {
header( $built );
}
}
/**
* Add current blog ID prefix to tags (multisite).
*
* @since 4.0
* @param array<int,string> $tags Tags.
* @return array<int,string>
*/
private function _prepend_bid( $tags ) {
if ( in_array( '*', $tags, true ) ) {
return [ '*' ];
}
$curr_bid = is_multisite() ? get_current_blog_id() : '';
foreach ( $tags as $k => $v ) {
$tags[ $k ] = $curr_bid . '_' . $v;
}
return $tags;
}
/**
* Activate `purge single url tag` for Admin QS.
*
* @since 1.1.3
* @return void
*/
public static function set_purge_single() {
self::cls()->_purge_single = true;
do_action( 'litespeed_purged_single' );
}
/**
* Purge frontend url (based on HTTP_REFERER).
*
* @since 1.3
* @since 2.2 Access changed from public to private, renamed from `frontend_purge`.
* @return void
*/
private function _purge_front() {
if ( empty( $_SERVER['HTTP_REFERER'] ) ) {
exit( 'no referer' );
}
$ref = esc_url_raw( wp_unslash( $_SERVER['HTTP_REFERER'] ) );
$this->purge_url( $ref );
do_action( 'litespeed_purged_front', $ref );
wp_safe_redirect( $ref );
exit;
}
/**
* Purge single UCSS (via referer or `url_tag`).
*
* @since 4.7
* @return void
*/
private function _purge_ucss() {
if ( empty( $_SERVER['HTTP_REFERER'] ) ) {
exit( 'no referer' );
}
$ref = esc_url_raw( wp_unslash( $_SERVER['HTTP_REFERER'] ) );
$url_tag = ! empty( $_GET['url_tag'] ) ? sanitize_text_field( wp_unslash( $_GET['url_tag'] ) ) : $ref; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
self::debug( 'Purge ucss [url_tag] ' . $url_tag );
do_action( 'litespeed_purge_ucss', $url_tag );
$this->purge_url( $ref );
wp_safe_redirect( $ref );
exit;
}
/**
* Purge the front page.
*
* @since 1.0.3
* @return void
*/
private function _purge_frontpage() {
$this->_add( Tag::TYPE_FRONTPAGE );
if ( 'LITESPEED_SERVER_OLS' !== LITESPEED_SERVER_TYPE ) {
$this->_add_private( Tag::TYPE_FRONTPAGE );
}
$msg = __( 'Notified LiteSpeed Web Server to purge the front page.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
do_action( 'litespeed_purged_frontpage' );
}
/**
* Purge all pages.
*
* @since 1.0.15
* @return void
*/
private function _purge_pages() {
$this->_add( Tag::TYPE_PAGES );
$msg = __( 'Notified LiteSpeed Web Server to purge all pages.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
do_action( 'litespeed_purged_pages' );
}
/**
* Purge error pages (403/404/500).
*
* @since 1.0.14
* @param string|false $type Error type.
* @return void
*/
private function _purge_error( $type = false ) {
$this->_add( Tag::TYPE_HTTP );
if ( ! $type || ! in_array( (string) $type, [ '403', '404', '500' ], true ) ) {
return;
}
$this->_add( Tag::TYPE_HTTP . $type );
$msg = __( 'Notified LiteSpeed Web Server to purge error pages.', 'litespeed-cache' );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( $msg );
}
}
/**
* Purge selected category by slug.
*
* @since 1.0.7
* @param string $value Category slug.
* @return void
*/
public function purge_cat( $value ) {
$val = trim( (string) $value );
if ( '' === $val ) {
return;
}
if ( 0 === preg_match( '/^[a-zA-Z0-9-]+$/', $val ) ) {
self::debug( "$val cat invalid" );
return;
}
$cat = get_category_by_slug( $val );
if ( false === $cat ) {
self::debug( "$val cat not existed/published" );
return;
}
self::add( Tag::TYPE_ARCHIVE_TERM . $cat->term_id );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( sprintf( __( 'Purge category %s', 'litespeed-cache' ), $val ) );
}
do_action( 'litespeed_purged_cat', $value );
}
/**
* Purge selected tag by slug.
*
* @since 1.0.7
* @param string $val Tag slug.
* @return void
*/
public function purge_tag( $val ) {
$val = trim( (string) $val );
if ( '' === $val ) {
return;
}
if ( 0 === preg_match( '/^[a-zA-Z0-9-]+$/', $val ) ) {
self::debug( "$val tag invalid" );
return;
}
$term = get_term_by( 'slug', $val, 'post_tag' );
if ( false === $term ) {
self::debug( "$val tag not exist" );
return;
}
self::add( Tag::TYPE_ARCHIVE_TERM . $term->term_id );
if ( ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( sprintf( __( 'Purge tag %s', 'litespeed-cache' ), $val ) );
}
do_action( 'litespeed_purged_tag', $val );
}
/**
* Purge selected url (relative allowed).
*
* @since 1.0.7
* @param string $url URL.
* @param bool $purge2 Use Purge2 header.
* @param bool $quite If true, do not show admin notice.
* @return void
*/
public function purge_url( $url, $purge2 = false, $quite = false ) {
$val = trim( (string) $url );
if ( '' === $val ) {
return;
}
if ( false !== strpos( $val, '<' ) ) {
self::debug( "$val url contains <" );
return;
}
$val = Utility::make_relative( $val );
$hash = Tag::get_uri_tag( $val );
if ( false === $hash ) {
self::debug( "$val url invalid" );
return;
}
self::add( $hash, $purge2 );
if ( ! $quite && ! defined( 'LITESPEED_PURGE_SILENT' ) ) {
Admin_Display::success( sprintf( __( 'Purge url %s', 'litespeed-cache' ), $val ) );
}
do_action( 'litespeed_purged_link', $url );
}
/**
* Purge a list based on admin selection.
*
* @since 1.0.7
* @return void
*/
public function purge_list() {
if ( ! isset( $_REQUEST[ Admin_Display::PURGEBYOPT_SELECT ], $_REQUEST[ Admin_Display::PURGEBYOPT_LIST ] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
return;
}
$sel = sanitize_text_field( wp_unslash( $_REQUEST[ Admin_Display::PURGEBYOPT_SELECT ] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$list_buf = sanitize_textarea_field( wp_unslash( $_REQUEST[ Admin_Display::PURGEBYOPT_LIST ] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
if ( '' === $list_buf ) {
return;
}
$list_buf = str_replace( ',', "\n", $list_buf );
$raw_list = explode( "\n", $list_buf );
switch ( $sel ) {
case Admin_Display::PURGEBY_CAT:
$cb = 'purge_cat';
break;
case Admin_Display::PURGEBY_PID:
$cb = 'purge_post';
break;
case Admin_Display::PURGEBY_TAG:
$cb = 'purge_tag';
break;
case Admin_Display::PURGEBY_URL:
$cb = 'purge_url';
break;
default:
return;
}
array_map( [ $this, $cb ], $raw_list );
// For redirection (safe copy back to GET).
$_GET[ Admin_Display::PURGEBYOPT_SELECT ] = $sel; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
/**
* Purge ESI.
*
* @since 3.0
* @param string $tag ESI tag.
* @return void
*/
public static function purge_esi( $tag ) {
self::add( Tag::TYPE_ESI . $tag );
do_action( 'litespeed_purged_esi', $tag );
}
/**
* Purge a certain post type.
*
* @since 3.0
* @param string $post_type Post type.
* @return void
*/
public static function purge_posttype( $post_type ) {
self::add( Tag::TYPE_ARCHIVE_POSTTYPE . $post_type );
self::add( $post_type );
do_action( 'litespeed_purged_posttype', $post_type );
}
/**
* Purge all related tags to a post.
*
* @since 1.0.0
* @param int $pid Post ID.
* @return void
*/
public function purge_post( $pid ) {
$pid = (int) $pid;
// Ignore the status we don't care.
$status = get_post_status( $pid );
if ( ! $pid || ! in_array( $status, [ 'publish', 'trash', 'private', 'draft' ], true ) ) {
return;
}
$purge_tags = $this->_get_purge_tags_by_post( $pid );
if ( ! $purge_tags ) {
return;
}
self::add( $purge_tags );
if ( $this->conf( self::O_CACHE_REST ) ) {
self::add( Tag::TYPE_REST );
}
do_action( 'litespeed_purged_post', $pid );
}
/**
* Purge a widget by ID (or discover Recent Comments widget).
*
* Hooked to load-widgets.php.
*
* @since 1.1.3
* @param string|null $widget_id Widget ID.
* @return void
*/
public static function purge_widget( $widget_id = null ) {
if ( null === $widget_id ) {
if ( empty( $_POST['widget-id'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing
return;
}
$widget_id = sanitize_text_field( wp_unslash( $_POST['widget-id'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Missing
if ( '' === $widget_id ) {
return;
}
}
self::add( Tag::TYPE_WIDGET . $widget_id );
self::add_private( Tag::TYPE_WIDGET . $widget_id );
do_action( 'litespeed_purged_widget', $widget_id );
}
/**
* Purges the comment widget when the count is updated.
*
* @since 1.1.3
* @global \WP_Widget_Factory $wp_widget_factory
* @return void
*/
public static function purge_comment_widget() {
global $wp_widget_factory;
if ( ! isset( $wp_widget_factory->widgets['WP_Widget_Recent_Comments'] ) ) {
return;
}
$recent_comments = $wp_widget_factory->widgets['WP_Widget_Recent_Comments'];
if ( null !== $recent_comments ) {
self::add( Tag::TYPE_WIDGET . $recent_comments->id );
self::add_private( Tag::TYPE_WIDGET . $recent_comments->id );
do_action( 'litespeed_purged_comment_widget', $recent_comments->id );
}
}
/**
* Purges feeds on comment count update.
*
* @since 1.0.9
* @return void
*/
public function purge_feeds() {
if ( $this->conf( self::O_CACHE_TTL_FEED ) > 0 ) {
self::add( Tag::TYPE_FEED );
}
do_action( 'litespeed_purged_feeds' );
}
/**
* Purges all private cache entries when the user logs out.
*
* @since 1.1.3
* @return void
*/
public static function purge_on_logout() {
self::add_private_all();
do_action( 'litespeed_purged_on_logout' );
}
/**
* Finalize purge tags before output.
*
* @since 1.1.3
* @return void
*/
private function _finalize() {
if ( ! defined( 'LITESPEED_DID_' . __FUNCTION__ ) ) {
define( 'LITESPEED_DID_' . __FUNCTION__, true );
} else {
return;
}
do_action( 'litespeed_purge_finalize' );
// Append unique uri purge tags if Admin QS is `PURGESINGLE` or `PURGE`.
if ( $this->_purge_single ) {
$tags = [ Tag::build_uri_tag() ];
$this->_pub_purge = array_merge( $this->_pub_purge, $this->_prepend_bid( $tags ) );
}
if ( ! empty( $this->_pub_purge ) ) {
$this->_pub_purge = array_unique( $this->_pub_purge );
}
if ( ! empty( $this->_priv_purge ) ) {
$this->_priv_purge = array_unique( $this->_priv_purge );
}
}
/**
* Gather and return purge header string.
*
* @since 1.1.0
* @return string Purge header line.
*/
public static function output() {
$instance = self::cls();
$instance->_finalize();
return $instance->_build();
}
/**
* Build the current purge header(s).
*
* @since 1.1.5
* @param bool $purge2 Whether to build X-LiteSpeed-Purge2.
* @return string Purge header line.
*/
private function _build( $purge2 = false ) {
if ( $purge2 ) {
if ( empty( $this->_pub_purge2 ) ) {
return '';
}
} elseif ( empty( $this->_pub_purge ) && empty( $this->_priv_purge ) ) {
return '';
}
$purge_header = '';
$private_prefix = self::X_HEADER . ': private,';
// Handle purge2.
if ( $purge2 ) {
$public_tags = $this->_append_prefix( $this->_pub_purge2 );
if ( empty( $public_tags ) ) {
return '';
}
$purge_header = self::X_HEADER2 . ': public,';
if ( Control::is_stale() ) {
$purge_header .= 'stale,';
}
$purge_header .= implode( ',', $public_tags );
return $purge_header;
}
if ( ! empty( $this->_pub_purge ) ) {
$public_tags = $this->_append_prefix( $this->_pub_purge );
if ( empty( $public_tags ) ) {
return ''; // If this ends up empty, private will also end up empty
}
$purge_header = self::X_HEADER . ': public,';
if ( Control::is_stale() ) {
$purge_header .= 'stale,';
}
$purge_header .= implode( ',', $public_tags );
$private_prefix = ';private,';
}
// Private purge tags.
if ( ! empty( $this->_priv_purge ) ) {
$private_tags = $this->_append_prefix( $this->_priv_purge, true );
$purge_header .= $private_prefix . implode( ',', $private_tags );
}
return $purge_header;
}
/**
* Append LS tag prefix to tags; handle '*' across network.
*
* @since 1.1.0
* @param array<int,string> $purge_tags Tags.
* @param bool $is_private Private tags.
* @return array<int,string>
*/
private function _append_prefix( $purge_tags, $is_private = false ) {
$curr_bid = is_multisite() ? get_current_blog_id() : '';
$purge_tags = apply_filters( 'litespeed_purge_tags', $purge_tags, $is_private );
if ( ! in_array( '*', $purge_tags, true ) ) {
$tags = [];
foreach ( $purge_tags as $val ) {
$tags[] = LSWCP_TAG_PREFIX . $val;
}
return $tags;
}
// Purge All: maybe reset crawler.
if ( ! $is_private && $this->conf( self::O_CRAWLER ) ) {
Crawler::cls()->reset_pos();
}
if ( ( defined( 'LSWCP_EMPTYCACHE' ) && LSWCP_EMPTYCACHE ) || $is_private ) {
return [ '*' ];
}
if ( is_multisite() && ! $this->_is_subsite_purge() ) {
$blogs = Activation::get_network_ids();
if ( empty( $blogs ) ) {
self::debug( 'build_purge_headers: blog list is empty' );
return [];
}
$tags = [];
foreach ( $blogs as $blog_id ) {
$tags[] = LSWCP_TAG_PREFIX . $blog_id . '_';
}
return $tags;
}
return [ LSWCP_TAG_PREFIX . $curr_bid . '_' ];
}
/**
* Check if this is a subsite purge in multisite.
*
* @since 4.0
* @return bool
*/
private function _is_subsite_purge() {
if ( ! is_multisite() ) {
return false;
}
if ( is_network_admin() ) {
return false;
}
if ( defined( 'LSWCP_EMPTYCACHE' ) && LSWCP_EMPTYCACHE ) {
return false;
}
// Ajax network contexts.
if ( Router::is_ajax() && ( check_ajax_referer( 'updates', false, false ) || check_ajax_referer( 'litespeed-purgeall-network', false, false ) ) ) {
return false;
}
return true;
}
/**
* Get purge tags related to a post.
*
* @since 1.0.0
* @param int $post_id Post ID.
* @return array<int,string>
*/
private function _get_purge_tags_by_post( $post_id ) {
if ( $this->conf( self::O_PURGE_POST_ALL ) ) {
return [ '*' ];
}
do_action( 'litespeed_api_purge_post', $post_id );
$purge_tags = [];
// Post itself.
$purge_tags[] = Tag::TYPE_POST . $post_id;
$post_status = get_post_status( $post_id );
if ( function_exists( 'is_post_status_viewable' ) && is_post_status_viewable( $post_status ) ) {
$purge_tags[] = Tag::get_uri_tag( wp_make_link_relative( get_permalink( $post_id ) ) );
}
// Avoid overriding global $post: use explicit post object.
$the_post = get_post( $post_id );
$post_type = $the_post ? $the_post->post_type : '';
// Widgets: recent posts.
global $wp_widget_factory;
$recent_posts = isset( $wp_widget_factory->widgets['WP_Widget_Recent_Posts'] ) ? $wp_widget_factory->widgets['WP_Widget_Recent_Posts'] : null;
if ( null !== $recent_posts ) {
$purge_tags[] = Tag::TYPE_WIDGET . $recent_posts->id;
}
// get adjacent posts id as related post tag
if ( 'post' === $post_type ) {
$prev_post = get_previous_post();
$next_post = get_next_post();
if ( ! empty( $prev_post->ID ) ) {
$purge_tags[] = Tag::TYPE_POST . $prev_post->ID;
self::debug( '--------purge_tags prev is: ' . $prev_post->ID );
}
if ( ! empty( $next_post->ID ) ) {
$purge_tags[] = Tag::TYPE_POST . $next_post->ID;
self::debug( '--------purge_tags next is: ' . $next_post->ID );
}
}
if ( $this->conf( self::O_PURGE_POST_TERM ) ) {
$taxonomies = get_object_taxonomies( $post_type );
// self::debug('purge by post, check tax = ' . var_export($taxonomies, true));
foreach ( $taxonomies as $tax ) {
$terms = get_the_terms( $post_id, $tax );
if ( ! empty( $terms ) ) {
foreach ( $terms as $term ) {
$purge_tags[] = Tag::TYPE_ARCHIVE_TERM . $term->term_id;
}
}
}
}
if ( $this->conf( self::O_CACHE_TTL_FEED ) ) {
$purge_tags[] = Tag::TYPE_FEED;
}
// Author archives.
if ( $this->conf( self::O_PURGE_POST_AUTHOR ) ) {
$purge_tags[] = Tag::TYPE_AUTHOR . get_post_field( 'post_author', $post_id );
}
// Post type archives.
if ( $this->conf( self::O_PURGE_POST_POSTTYPE ) && get_post_type_archive_link( $post_type ) ) {
$purge_tags[] = Tag::TYPE_ARCHIVE_POSTTYPE . $post_type;
$purge_tags[] = $post_type;
}
if ( $this->conf( self::O_PURGE_POST_FRONTPAGE ) ) {
$purge_tags[] = Tag::TYPE_FRONTPAGE;
}
if ( $this->conf( self::O_PURGE_POST_HOMEPAGE ) ) {
$purge_tags[] = Tag::TYPE_HOME;
}
if ( $this->conf( self::O_PURGE_POST_PAGES ) ) {
$purge_tags[] = Tag::TYPE_PAGES;
}
if ( $this->conf( self::O_PURGE_POST_PAGES_WITH_RECENT_POSTS ) ) {
$purge_tags[] = Tag::TYPE_PAGES_WITH_RECENT_POSTS;
}
// Date archives (use gmdate as per WPCS).
$date_gmt = $the_post ? strtotime( $the_post->post_date_gmt ) : false;
if ( $date_gmt ) {
if ( $this->conf( self::O_PURGE_POST_DATE ) ) {
$purge_tags[] = Tag::TYPE_ARCHIVE_DATE . gmdate( 'Ymd', $date_gmt );
}
if ( $this->conf( self::O_PURGE_POST_MONTH ) ) {
$purge_tags[] = Tag::TYPE_ARCHIVE_DATE . gmdate( 'Ym', $date_gmt );
}
if ( $this->conf( self::O_PURGE_POST_YEAR ) ) {
$purge_tags[] = Tag::TYPE_ARCHIVE_DATE . gmdate( 'Y', $date_gmt );
}
}
return array_unique( array_filter( $purge_tags ) );
}
/**
* Run a filter and also purge all (utility for hooks).
*
* @since 1.1.5
* @param string $val Filter value.
* @return string Same value.
*/
public static function filter_with_purge_all( $val ) {
self::purge_all();
return $val;
}
}