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<?php
/**
* The Crawler Sitemap Class.
*
* @package LiteSpeed
* @since 1.1.0
*/
namespace LiteSpeed;
defined( 'WPINC' ) || exit();
/**
* Class Crawler_Map
*
* Maintains and persists crawler sitemap/blacklist state, parses custom sitemaps,
* and exposes helpers to query & mutate crawler results.
*/
class Crawler_Map extends Root {
const LOG_TAG = 'ππΊοΈ';
const BM_MISS = 1;
const BM_HIT = 2;
const BM_BLACKLIST = 4;
/**
* Site URL used to simplify URLs.
*
* @var string
*/
private $_site_url;
/**
* Main crawler table name.
*
* @var string
*/
private $_tb;
/**
* Crawler blacklist table name.
*
* @var string
*/
private $_tb_blacklist;
/**
* Data service instance.
*
* @var \LiteSpeed\Data
*/
private $__data;
/**
* Timeout (seconds) when fetching sitemaps.
*
* @var int
*/
private $_conf_map_timeout;
/**
* Collected URLs from parsed sitemaps.
*
* @var array<int,string>
*/
private $_urls = [];
/**
* Instantiate the class.
*
* @since 1.1.0
*/
public function __construct() {
$this->_site_url = get_site_url();
$this->__data = Data::cls();
$this->_tb = $this->__data->tb( 'crawler' );
$this->_tb_blacklist = $this->__data->tb( 'crawler_blacklist' );
// Specify the timeout while parsing the sitemap.
$this->_conf_map_timeout = defined( 'LITESPEED_CRAWLER_MAP_TIMEOUT' ) ? constant( 'LITESPEED_CRAWLER_MAP_TIMEOUT' ) : 180;
}
/**
* Save URLs crawl status into DB.
*
* @since 3.0
* @access public
*
* @param array<int,array<int,array{url:string,code:int}>> $items Map of bit => [ id => [url, code] ].
* @param int $curr_crawler Current crawler index (0-based).
* @return array<int,array>
*/
public function save_map_status( $items, $curr_crawler ) {
global $wpdb;
Utility::compatibility();
$total_crawler = count( Crawler::cls()->list_crawlers() );
$total_crawler_pos = $total_crawler - 1;
// Replace current crawler's position.
$curr_crawler = (int) $curr_crawler;
foreach ( $items as $bit => $ids ) {
// $ids = [ id => [ url, code ], ... ].
if ( ! $ids ) {
continue;
}
self::debug( 'Update map [crawler] ' . $curr_crawler . ' [bit] ' . $bit . ' [count] ' . count( $ids ) );
// Update res first, then reason
$right_pos = $total_crawler_pos - $curr_crawler;
$id_all = implode(',', array_map('intval', array_keys($ids)));
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.InterpolatedNotPrepared
$wpdb->query("UPDATE `$this->_tb` SET res = CONCAT( LEFT( res, $curr_crawler ), '$bit', RIGHT( res, $right_pos ) ) WHERE id IN ( $id_all )");
// Add blacklist
if (Crawler::STATUS_BLACKLIST === $bit || Crawler::STATUS_NOCACHE === $bit) {
$q = "SELECT a.id, a.url FROM `$this->_tb_blacklist` a LEFT JOIN `$this->_tb` b ON b.url=a.url WHERE b.id IN ( $id_all )";
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
$existing = $wpdb->get_results($q, ARRAY_A);
// Update current crawler status tag in existing blacklist
if ($existing) {
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQL.NotPrepared
$count = $wpdb->query("UPDATE `$this->_tb_blacklist` SET res = CONCAT( LEFT( res, $curr_crawler ), '$bit', RIGHT( res, $right_pos ) ) WHERE id IN ( " . implode(',', array_column($existing, 'id')) . ' )');
self::debug('Update blacklist [count] ' . $count);
}
// Append new blacklist
if (count($ids) > count($existing)) {
$new_urls = array_diff(array_column($ids, 'url'), array_column($existing, 'url'));
self::debug('Insert into blacklist [count] ' . count($new_urls));
$q = "INSERT INTO `$this->_tb_blacklist` ( url, res, reason ) VALUES " . implode(',', array_fill(0, count($new_urls), '( %s, %s, %s )'));
$data = array();
$res = array_fill(0, $total_crawler, '-');
$res[$curr_crawler] = $bit;
$res = implode('', $res);
$default_reason = $total_crawler > 1 ? str_repeat(',', $total_crawler - 1) : ''; // Pre-populate default reason value first, update later
foreach ($new_urls as $url) {
$data[] = $url;
$data[] = $res;
$data[] = $default_reason;
}
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
$wpdb->query($wpdb->prepare($q, $data));
}
}
// Update sitemap reason w/ HTTP code.
$reason_array = [];
foreach ( $ids as $row_id => $row ) {
$code = (int) $row['code'];
if ( empty( $reason_array[ $code ] ) ) {
$reason_array[ $code ] = [];
}
$reason_array[ $code ][] = (int) $row_id;
}
foreach ($reason_array as $code => $v2) {
// Complement comma
if ($curr_crawler) {
$code = ',' . $code;
}
if ($curr_crawler < $total_crawler_pos) {
$code .= ',';
}
// phpcs:ignore WordPress.DB
$count = $wpdb->query( "UPDATE `$this->_tb` SET reason=CONCAT(SUBSTRING_INDEX(reason, ',', $curr_crawler), '$code', SUBSTRING_INDEX(reason, ',', -$right_pos)) WHERE id IN (" . implode(',', $v2) . ')' );
self::debug("Update map reason [code] $code [pos] left $curr_crawler right -$right_pos [count] $count");
// Update blacklist reason
if (Crawler::STATUS_BLACKLIST === $bit || Crawler::STATUS_NOCACHE === $bit) {
// phpcs:ignore WordPress.DB
$count = $wpdb->query( "UPDATE `$this->_tb_blacklist` a LEFT JOIN `$this->_tb` b ON b.url = a.url SET a.reason=CONCAT(SUBSTRING_INDEX(a.reason, ',', $curr_crawler), '$code', SUBSTRING_INDEX(a.reason, ',', -$right_pos)) WHERE b.id IN (" . implode(',', $v2) . ')' );
self::debug("Update blacklist [code] $code [pos] left $curr_crawler right -$right_pos [count] $count");
}
}
// Reset list.
$items[ $bit ] = [];
}
return $items;
}
/**
* Add one record to blacklist.
* NOTE: $id is sitemap table ID.
*
* @since 3.0
* @access public
*
* @param int $id Sitemap row ID.
* @return void
*/
public function blacklist_add( $id ) {
global $wpdb;
$id = (int) $id;
// Build res&reason.
$total_crawler = count( Crawler::cls()->list_crawlers() );
$res = str_repeat(Crawler::STATUS_BLACKLIST, $total_crawler);
$reason = implode(',', array_fill(0, $total_crawler, 'Man'));
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.InterpolatedNotPrepared
$row = $wpdb->get_row("SELECT a.url, b.id FROM `$this->_tb` a LEFT JOIN `$this->_tb_blacklist` b ON b.url = a.url WHERE a.id = '$id'", ARRAY_A);
if (!$row) {
self::debug('blacklist failed to add [id] ' . $id);
return;
}
self::debug('Add to blacklist [url] ' . $row['url']);
$q = "UPDATE `$this->_tb` SET res = %s, reason = %s WHERE id = %d";
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
$wpdb->query($wpdb->prepare($q, array( $res, $reason, $id )));
if ($row['id']) {
$q = "UPDATE `$this->_tb_blacklist` SET res = %s, reason = %s WHERE id = %d";
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
$wpdb->query($wpdb->prepare($q, array( $res, $reason, $row['id'] )));
} else {
$q = "INSERT INTO `$this->_tb_blacklist` (url, res, reason) VALUES (%s, %s, %s)";
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
$wpdb->query($wpdb->prepare($q, array( $row['url'], $res, $reason )));
}
}
/**
* Delete one record from blacklist.
*
* @since 3.0
* @access public
*
* @param int $id Blacklist row ID.
* @return void
*/
public function blacklist_del( $id ) {
global $wpdb;
if ( ! $this->__data->tb_exist( 'crawler_blacklist' ) ) {
return;
}
$id = (int) $id;
self::debug('blacklist delete [id] ' . $id);
$sql = sprintf(
"UPDATE `%s` SET res=REPLACE(REPLACE(res, '%s', '-'), '%s', '-') WHERE url=(SELECT url FROM `%s` WHERE id=%d)",
$this->_tb,
Crawler::STATUS_NOCACHE,
Crawler::STATUS_BLACKLIST,
$this->_tb_blacklist,
$id
);
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
$wpdb->query($sql);
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.InterpolatedNotPrepared
$wpdb->query("DELETE FROM `$this->_tb_blacklist` WHERE id='$id'");
}
/**
* Empty blacklist.
*
* @since 3.0
* @access public
* @return void
*/
public function blacklist_empty() {
global $wpdb;
if ( ! $this->__data->tb_exist( 'crawler_blacklist' ) ) {
return;
}
self::debug('Truncate blacklist');
$sql = sprintf("UPDATE `%s` SET res=REPLACE(REPLACE(res, '%s', '-'), '%s', '-')", $this->_tb, Crawler::STATUS_NOCACHE, Crawler::STATUS_BLACKLIST);
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
$wpdb->query($sql);
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.InterpolatedNotPrepared
$wpdb->query("TRUNCATE `$this->_tb_blacklist`");
}
/**
* List blacklist.
*
* @since 3.0
* @access public
*
* @param int|false $limit Number of rows to fetch, or false for all.
* @param int|false $offset Offset for pagination, or false to auto-calc.
* @return array<int,array<string,mixed>>
*/
public function list_blacklist( $limit = false, $offset = false ) {
global $wpdb;
if ( ! $this->__data->tb_exist( 'crawler_blacklist' ) ) {
return [];
}
$q = "SELECT * FROM `$this->_tb_blacklist` ORDER BY id DESC";
if ( false !== $limit ) {
if ( false === $offset ) {
$total = $this->count_blacklist();
$offset = Utility::pagination($total, $limit, true);
}
$q .= ' LIMIT %d, %d';
// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
$q = $wpdb->prepare($q, $offset, $limit);
}
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
return $wpdb->get_results($q, ARRAY_A);
}
/**
* Count blacklist.
*
* @return int|false
*/
public function count_blacklist() {
global $wpdb;
if ( ! $this->__data->tb_exist( 'crawler_blacklist' ) ) {
return false;
}
$q = "SELECT COUNT(*) FROM `$this->_tb_blacklist`";
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
return $wpdb->get_var($q);
}
/**
* Empty sitemap.
*
* @since 3.0
* @access public
* @return void
*/
public function empty_map() {
Data::cls()->tb_del( 'crawler' );
$msg = __( 'Sitemap cleaned successfully', 'litespeed-cache' );
Admin_Display::success( $msg );
}
/**
* List generated sitemap.
*
* @since 3.0
* @access public
*
* @param int $limit Number of rows per page.
* @param int|bool $offset Offset for pagination, or false to auto-calc.
* @return array<int,array<string,mixed>>
*/
public function list_map( $limit, $offset = false ) {
global $wpdb;
if ( ! $this->__data->tb_exist( 'crawler' ) ) {
return [];
}
if ( false === $offset ) {
$total = $this->count_map();
$offset = Utility::pagination($total, $limit, true);
}
$type = Router::verify_type();
$req_uri_like = '';
// phpcs:ignore WordPress.Security.NonceVerification.Missing
if ( ! empty( $_POST['kw'] ) ) {
// phpcs:ignore WordPress.Security.NonceVerification.Missing
$kw = sanitize_text_field( wp_unslash( $_POST['kw'] ) );
$q = "SELECT * FROM `$this->_tb` WHERE url LIKE %s";
if ( 'hit' === $type ) {
$q .= " AND res LIKE '%" . Crawler::STATUS_HIT . "%'";
}
if ( 'miss' === $type ) {
$q .= " AND res LIKE '%" . Crawler::STATUS_MISS . "%'";
}
if ( 'blacklisted' === $type ) {
$q .= " AND res LIKE '%" . Crawler::STATUS_BLACKLIST . "%'";
}
$q .= ' ORDER BY id LIMIT %d, %d';
$req_uri_like = '%' . $wpdb->esc_like( $kw ) . '%';
return $wpdb->get_results( $wpdb->prepare( $q, $req_uri_like, $offset, $limit ), ARRAY_A ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
}
$q = "SELECT * FROM `$this->_tb`";
if ( 'hit' === $type ) {
$q .= " WHERE res LIKE '%" . Crawler::STATUS_HIT . "%'";
}
if ( 'miss' === $type ) {
$q .= " WHERE res LIKE '%" . Crawler::STATUS_MISS . "%'";
}
if ( 'blacklisted' === $type ) {
$q .= " WHERE res LIKE '%" . Crawler::STATUS_BLACKLIST . "%'";
}
$q .= ' ORDER BY id LIMIT %d, %d';
return $wpdb->get_results( $wpdb->prepare( $q, $offset, $limit ), ARRAY_A ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
}
/**
* Count sitemap.
*
* @return int|false
*/
public function count_map() {
global $wpdb;
if ( ! $this->__data->tb_exist( 'crawler' ) ) {
return false;
}
$q = "SELECT COUNT(*) FROM `$this->_tb`";
$type = Router::verify_type();
if ( 'hit' === $type ) {
$q .= " WHERE res LIKE '%" . Crawler::STATUS_HIT . "%'";
}
if ( 'miss' === $type ) {
$q .= " WHERE res LIKE '%" . Crawler::STATUS_MISS . "%'";
}
if ( 'blacklisted' === $type ) {
$q .= " WHERE res LIKE '%" . Crawler::STATUS_BLACKLIST . "%'";
}
return $wpdb->get_var( $q ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
}
/**
* Generate sitemap.
*
* @since 1.1.0
* @access public
*
* @param bool $manual Whether triggered manually from UI.
* @return void
*/
public function gen( $manual = false ) {
$count = $this->_gen();
if ( ! $count ) {
Admin_Display::error( __( 'No valid sitemap parsed for crawler.', 'litespeed-cache' ) );
return;
}
if ( ! wp_doing_cron() && $manual ) {
$msg = sprintf( __( 'Sitemap created successfully: %d items', 'litespeed-cache' ), $count );
Admin_Display::success( $msg );
}
}
/**
* Generate the sitemap.
*
* @since 1.1.0
* @access private
* @return int|false Number of URLs generated or false on failure.
*/
private function _gen() {
global $wpdb;
if ( ! $this->__data->tb_exist( 'crawler' ) ) {
$this->__data->tb_create( 'crawler' );
}
if ( ! $this->__data->tb_exist( 'crawler_blacklist' ) ) {
$this->__data->tb_create( 'crawler_blacklist' );
}
// Use custom sitemap.
$sitemap = $this->conf( Base::O_CRAWLER_SITEMAP );
if ( ! $sitemap ) {
return false;
}
$offset = strlen( $this->_site_url );
$sitemap = Utility::sanitize_lines( $sitemap );
try {
foreach ( $sitemap as $this_map ) {
$this->_parse( $this_map );
}
} catch ( \Exception $e ) {
self::debug( 'β failed to parse custom sitemap: ' . $e->getMessage() );
}
if ( is_array( $this->_urls ) && ! empty( $this->_urls ) ) {
if ( defined( 'LITESPEED_CRAWLER_DROP_DOMAIN' ) && constant( 'LITESPEED_CRAWLER_DROP_DOMAIN' ) ) {
foreach ( $this->_urls as $k => $v ) {
if ( 0 !== stripos( $v, $this->_site_url ) ) {
unset( $this->_urls[ $k ] );
continue;
}
$this->_urls[ $k ] = substr( $v, $offset );
}
}
$this->_urls = array_values( array_unique( $this->_urls ) );
}
self::debug( 'Truncate sitemap' );
$wpdb->query( "TRUNCATE `$this->_tb`" ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.DirectDatabaseQuery.DirectQuery
self::debug( 'Generate sitemap' );
// Filter URLs in blacklist.
$blacklist = $this->list_blacklist();
$full_blacklisted = [];
$partial_blacklisted = [];
foreach ( $blacklist as $v ) {
if ( false === strpos( $v['res'], '-' ) ) {
// Full blacklisted.
$full_blacklisted[] = $v['url'];
} else {
// Replace existing reason.
$v['reason'] = explode( ',', $v['reason'] );
$v['reason'] = array_map(
function ( $element ) {
return $element ? 'Existed' : '';
},
$v['reason']
);
$v['reason'] = implode( ',', $v['reason'] );
$partial_blacklisted[ $v['url'] ] = [
'res' => $v['res'],
'reason' => $v['reason'],
];
}
}
// Drop all blacklisted URLs.
$this->_urls = array_diff( $this->_urls, $full_blacklisted );
// Default res & reason.
$crawler_count = count( Crawler::cls()->list_crawlers() );
$default_res = str_repeat( '-', $crawler_count );
$default_reason = $crawler_count > 1 ? str_repeat( ',', $crawler_count - 1 ) : '';
$data = [];
foreach ( $this->_urls as $url ) {
$data[] = $url;
$data[] = array_key_exists( $url, $partial_blacklisted ) ? $partial_blacklisted[ $url ]['res'] : $default_res;
$data[] = array_key_exists( $url, $partial_blacklisted ) ? $partial_blacklisted[ $url ]['reason'] : $default_reason;
}
foreach ( array_chunk( $data, 300 ) as $data2 ) {
$this->_save( $data2 );
}
// Reset crawler.
Crawler::cls()->reset_pos();
return count( $this->_urls );
}
/**
* Save data to table.
*
* @since 3.0
* @access private
*
* @param array<int,string> $data Flat array (url,res,reason, url,res,reason, ...).
* @param string $fields Fields list for insert (default url,res,reason).
* @return void
*/
private function _save( $data, $fields = 'url,res,reason' ) {
global $wpdb;
if ( empty( $data ) ) {
return;
}
$q = "INSERT INTO `$this->_tb` ( {$fields} ) VALUES ";
// Add placeholder.
$q .= Utility::chunk_placeholder( $data, $fields );
// Store data.
$wpdb->query( $wpdb->prepare( $q, $data ) ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.PreparedSQL.NotPrepared
}
/**
* Parse custom sitemap and collect urls.
*
* @since 1.1.1
* @access private
*
* @param string $sitemap Absolute sitemap URL.
* @return void
* @throws \Exception If remote read or parsing fails.
*/
private function _parse( $sitemap ) {
/**
* Read via wp func to avoid allow_url_fopen = off
*
* @since 2.2.7
*/
$response = wp_safe_remote_get(
$sitemap,
[
'timeout' => $this->_conf_map_timeout,
'sslverify' => false,
]
);
if ( is_wp_error( $response ) ) {
$error_message = $response->get_error_message();
self::debug( 'failed to read sitemap: ' . $error_message );
throw new \Exception( 'Failed to remote read ' . esc_url( $sitemap ) );
}
$xml_object = simplexml_load_string($response['body'], null, LIBXML_NOCDATA);
if (!$xml_object) {
if ($this->_urls) {
return;
}
throw new \Exception('Failed to parse xml ' . esc_url( $sitemap ));
}
// start parsing.
$xml_array = (array) $xml_object;
if ( ! empty( $xml_array['sitemap'] ) ) {
// parse sitemap set.
if ( is_object( $xml_array['sitemap'] ) ) {
$xml_array['sitemap'] = (array) $xml_array['sitemap'];
}
if ( ! empty( $xml_array['sitemap']['loc'] ) ) {
// is single sitemap.
$this->_parse( (string) $xml_array['sitemap']['loc'] );
} else {
// parse multiple sitemaps.
foreach ( (array) $xml_array['sitemap'] as $val ) {
$val = (array) $val;
if ( ! empty( $val['loc'] ) ) {
$this->_parse( (string) $val['loc'] ); // recursive parse sitemap.
}
}
}
} elseif ( ! empty( $xml_array['url'] ) ) {
// parse url set.
if ( is_object( $xml_array['url'] ) ) {
$xml_array['url'] = (array) $xml_array['url'];
}
// if only 1 element.
if ( ! empty( $xml_array['url']['loc'] ) ) {
$this->_urls[] = (string) $xml_array['url']['loc'];
} else {
foreach ( (array) $xml_array['url'] as $val ) {
$val = (array) $val;
if ( ! empty( $val['loc'] ) ) {
$this->_urls[] = (string) $val['loc'];
}
}
}
}
}
}