WIBUHAX0R1337

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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 = '🧹';

/**
	 * 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( '❌ 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( '❌ 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( '❌ 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( '❌ 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' ) ) {
			// Can't send, already has output, need to save and wait for next run
			self::update_option($purge2 ? self::DB_QUEUE2 : self::DB_QUEUE, $curr_built);
			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;
	}
}

Nama File / Folder	Size	Action
cdn	--	NONE
data_structure	--	NONE
activation.cls.php	17.437KB	Edit File Delete File Rename
admin-display.cls.php	48.119KB	Edit File Delete File Rename
admin-settings.cls.php	11.116KB	Edit File Delete File Rename
admin.cls.php	5.046KB	Edit File Delete File Rename
api.cls.php	10.437KB	Edit File Delete File Rename
avatar.cls.php	8.682KB	Edit File Delete File Rename
base.cls.php	34.58KB	Edit File Delete File Rename
cdn.cls.php	15.918KB	Edit File Delete File Rename
cloud.cls.php	65.796KB	Edit File Delete File Rename
conf.cls.php	19.53KB	Edit File Delete File Rename
control.cls.php	24.349KB	Edit File Delete File Rename
core.cls.php	21.015KB	Edit File Delete File Rename
crawler-map.cls.php	19.428KB	Edit File Delete File Rename
crawler.cls.php	42.195KB	Edit File Delete File Rename
css.cls.php	15.271KB	Edit File Delete File Rename
data.cls.php	16.49KB	Edit File Delete File Rename
data.upgrade.func.php	3.073KB	Edit File Delete File Rename
db-optm.cls.php	10.341KB	Edit File Delete File Rename
debug2.cls.php	14.17KB	Edit File Delete File Rename
doc.cls.php	4.066KB	Edit File Delete File Rename
error.cls.php	7.383KB	Edit File Delete File Rename
esi.cls.php	27.182KB	Edit File Delete File Rename
file.cls.php	10.569KB	Edit File Delete File Rename
gui.cls.php	36.503KB	Edit File Delete File Rename
health.cls.php	2.831KB	Edit File Delete File Rename
htaccess.cls.php	24.002KB	Edit File Delete File Rename
img-optm.cls.php	65.13KB	Edit File Delete File Rename
import.cls.php	4.292KB	Edit File Delete File Rename
import.preset.cls.php	5.501KB	Edit File Delete File Rename
lang.cls.php	15.06KB	Edit File Delete File Rename
localization.cls.php	3.439KB	Edit File Delete File Rename
media.cls.php	40.368KB	Edit File Delete File Rename
metabox.cls.php	5.316KB	Edit File Delete File Rename
object-cache-wp.cls.php	24.667KB	Edit File Delete File Rename
object-cache.cls.php	20.301KB	Edit File Delete File Rename
object.lib.php	13.31KB	Edit File Delete File Rename
optimize.cls.php	38.663KB	Edit File Delete File Rename
optimizer.cls.php	9.414KB	Edit File Delete File Rename
placeholder.cls.php	14.187KB	Edit File Delete File Rename
purge.cls.php	33.95KB	Edit File Delete File Rename
report.cls.php	6.119KB	Edit File Delete File Rename
rest.cls.php	8.637KB	Edit File Delete File Rename
root.cls.php	13.987KB	Edit File Delete File Rename
router.cls.php	20.568KB	Edit File Delete File Rename
str.cls.php	3.15KB	Edit File Delete File Rename
tag.cls.php	9.259KB	Edit File Delete File Rename
task.cls.php	6.132KB	Edit File Delete File Rename
tool.cls.php	4.217KB	Edit File Delete File Rename
ucss.cls.php	14.374KB	Edit File Delete File Rename
utility.cls.php	21.763KB	Edit File Delete File Rename
vary.cls.php	20.201KB	Edit File Delete File Rename
vpi.cls.php	9.363KB	Edit File Delete File Rename