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<?php
/**
* The Crawler Sitemap Class
*
* @since 1.1.0
*/
namespace LiteSpeed;
defined('WPINC') || exit();
class Crawler_Map extends Root
{
const LOG_TAG = 'ππΊοΈ';
const BM_MISS = 1;
const BM_HIT = 2;
const BM_BLACKLIST = 4;
private $_home_url; // Used to simplify urls
private $_tb;
private $_tb_blacklist;
private $__data;
private $_conf_map_timeout;
private $_urls = array();
/**
* Instantiate the class
*
* @since 1.1.0
*/
public function __construct()
{
$this->_home_url = get_home_url();
$this->__data = Data::cls();
$this->_tb = $this->__data->tb('crawler');
$this->_tb_blacklist = $this->__data->tb('crawler_blacklist');
$this->_conf_map_timeout = $this->conf(Base::O_CRAWLER_MAP_TIMEOUT);
}
/**
* Save URLs crawl status into DB
*
* @since 3.0
* @access public
*/
public function save_map_status($list, $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) $curr_crawler;
foreach ($list 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;
$sql_res = "CONCAT( LEFT( res, $curr_crawler ), '$bit', RIGHT( res, $right_pos ) )";
$id_all = implode(',', array_map('intval', array_keys($ids)));
$wpdb->query("UPDATE `$this->_tb` SET res = $sql_res WHERE id IN ( $id_all )");
// Add blacklist
if ($bit == 'B' || $bit == 'N') {
$q = "SELECT a.id, a.url FROM `$this->_tb_blacklist` a LEFT JOIN `$this->_tb` b ON b.url=a.url WHERE b.id IN ( $id_all )";
$existing = $wpdb->get_results($q, ARRAY_A);
// Update current crawler status tag in existing blacklist
if ($existing) {
$count = $wpdb->query("UPDATE `$this->_tb_blacklist` SET res = $sql_res WHERE id IN ( " . implode(',', array_column($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;
}
$wpdb->query($wpdb->prepare($q, $data));
}
}
// Update sitemap reason w/ HTTP code
$reason_array = array();
foreach ($ids as $id => $v2) {
$code = (int) $v2['code'];
if (empty($reason_array[$code])) {
$reason_array[$code] = array();
}
$reason_array[$code][] = (int) $id;
}
foreach ($reason_array as $code => $v2) {
// Complement comma
if ($curr_crawler) {
$code = ',' . $code;
}
if ($curr_crawler < $total_crawler_pos) {
$code .= ',';
}
$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] $count");
// Update blacklist reason
if ($bit == 'B' || $bit == 'N') {
$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
$list[$bit] = array();
}
return $list;
}
/**
* Add one record to blacklist
* NOTE: $id is sitemap table ID
*
* @since 3.0
* @access public
*/
public function blacklist_add($id)
{
global $wpdb;
$id = (int) $id;
// Build res&reason
$total_crawler = count(Crawler::cls()->list_crawlers());
$res = str_repeat('B', $total_crawler);
$reason = implode(',', array_fill(0, $total_crawler, 'Man'));
$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";
$wpdb->query($wpdb->prepare($q, array($res, $reason, $id)));
if ($row['id']) {
$q = "UPDATE `$this->_tb_blacklist` SET res = %s, reason = %s WHERE id = %d";
$wpdb->query($wpdb->prepare($q, array($res, $reason, $row['id'])));
} else {
$q = "INSERT INTO `$this->_tb_blacklist` (url, res, reason) VALUES (%s, %s, %s)";
$wpdb->query($wpdb->prepare($q, array($row['url'], $res, $reason)));
}
}
/**
* Delete one record from blacklist
*
* @since 3.0
* @access public
*/
public function blacklist_del($id)
{
global $wpdb;
if (!$this->__data->tb_exist('crawler_blacklist')) {
return;
}
$id = (int) $id;
self::debug('blacklist delete [id] ' . $id);
$wpdb->query("UPDATE `$this->_tb` SET res=REPLACE(REPLACE(res, 'N', '-'), 'B', '-') WHERE url=(SELECT url FROM `$this->_tb_blacklist` WHERE id='$id')");
$wpdb->query("DELETE FROM `$this->_tb_blacklist` WHERE id='$id'");
}
/**
* Empty blacklist
*
* @since 3.0
* @access public
*/
public function blacklist_empty()
{
global $wpdb;
if (!$this->__data->tb_exist('crawler_blacklist')) {
return;
}
self::debug('Truncate blacklist');
$wpdb->query("UPDATE `$this->_tb` SET res=REPLACE(REPLACE(res, 'N', '-'), 'B', '-')");
$wpdb->query("TRUNCATE `$this->_tb_blacklist`");
}
/**
* List blacklist
*
* @since 3.0
* @access public
*/
public function list_blacklist($limit = false, $offset = false)
{
global $wpdb;
if (!$this->__data->tb_exist('crawler_blacklist')) {
return array();
}
$q = "SELECT * FROM `$this->_tb_blacklist` ORDER BY id DESC";
if ($limit !== false) {
if ($offset === false) {
$total = $this->count_blacklist();
$offset = Utility::pagination($total, $limit, true);
}
$q .= ' LIMIT %d, %d';
$q = $wpdb->prepare($q, $offset, $limit);
}
return $wpdb->get_results($q, ARRAY_A);
}
/**
* Count blacklist
*/
public function count_blacklist()
{
global $wpdb;
if (!$this->__data->tb_exist('crawler_blacklist')) {
return false;
}
$q = "SELECT COUNT(*) FROM `$this->_tb_blacklist`";
return $wpdb->get_var($q);
}
/**
* Empty sitemap
*
* @since 3.0
* @access public
*/
public function empty_map()
{
Data::cls()->tb_del('crawler');
$msg = __('Sitemap cleaned successfully', 'litespeed-cache');
Admin_Display::succeed($msg);
}
/**
* List generated sitemap
*
* @since 3.0
* @access public
*/
public function list_map($limit, $offset = false)
{
global $wpdb;
if (!$this->__data->tb_exist('crawler')) {
return array();
}
if ($offset === false) {
$total = $this->count_map();
$offset = Utility::pagination($total, $limit, true);
}
$type = Router::verify_type();
$where = '';
if (!empty($_POST['kw'])) {
$q = "SELECT * FROM `$this->_tb` WHERE url LIKE %s";
if ($type == 'hit') {
$q .= " AND res LIKE '%H%'";
}
if ($type == 'miss') {
$q .= " AND res LIKE '%M%'";
}
if ($type == 'blacklisted') {
$q .= " AND res LIKE '%B%'";
}
$q .= ' ORDER BY id LIMIT %d, %d';
$where = '%' . $wpdb->esc_like($_POST['kw']) . '%';
return $wpdb->get_results($wpdb->prepare($q, $where, $offset, $limit), ARRAY_A);
}
$q = "SELECT * FROM `$this->_tb`";
if ($type == 'hit') {
$q .= " WHERE res LIKE '%H%'";
}
if ($type == 'miss') {
$q .= " WHERE res LIKE '%M%'";
}
if ($type == 'blacklisted') {
$q .= " WHERE res LIKE '%B%'";
}
$q .= ' ORDER BY id LIMIT %d, %d';
// self::debug("q=$q offset=$offset, limit=$limit");
return $wpdb->get_results($wpdb->prepare($q, $offset, $limit), ARRAY_A);
}
/**
* Count sitemap
*/
public function count_map()
{
global $wpdb;
if (!$this->__data->tb_exist('crawler')) {
return false;
}
$q = "SELECT COUNT(*) FROM `$this->_tb`";
$type = Router::verify_type();
if ($type == 'hit') {
$q .= " WHERE res LIKE '%H%'";
}
if ($type == 'miss') {
$q .= " WHERE res LIKE '%M%'";
}
if ($type == 'blacklisted') {
$q .= " WHERE res LIKE '%B%'";
}
return $wpdb->get_var($q);
}
/**
* Generate sitemap
*
* @since 1.1.0
* @access public
*/
public function gen($manual = false)
{
$count = $this->_gen();
if (!$count) {
Admin_Display::error(__('No valid sitemap parsed for crawler.', 'litespeed-cache'));
return;
}
if (!defined('DOING_CRON') && $manual) {
$msg = sprintf(__('Sitemap created successfully: %d items', 'litespeed-cache'), $count);
Admin_Display::succeed($msg);
}
}
/**
* Generate the sitemap
*
* @since 1.1.0
* @access private
*/
private function _gen()
{
global $wpdb;
if (!$this->__data->tb_exist('crawler')) {
$this->__data->tb_create('crawler');
}
if (!$this->__data->tb_exist('crawler_blacklist')) {
$this->__data->tb_create('crawler_blacklist');
}
// use custom sitemap
if (!($sitemap = $this->conf(Base::O_CRAWLER_SITEMAP))) {
return false;
}
$offset = strlen($this->_home_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($this->_urls)) {
if ($this->conf(Base::O_CRAWLER_DROP_DOMAIN)) {
foreach ($this->_urls as $k => $v) {
if (stripos($v, $this->_home_url) !== 0) {
unset($this->_urls[$k]);
continue;
}
$this->_urls[$k] = substr($v, $offset);
}
}
$this->_urls = array_unique($this->_urls);
}
self::debug('Truncate sitemap');
$wpdb->query("TRUNCATE `$this->_tb`");
self::debug('Generate sitemap');
// Filter URLs in blacklist
$blacklist = $this->list_blacklist();
$full_blacklisted = array();
$partial_blacklisted = array();
foreach ($blacklist as $v) {
if (strpos($v['res'], '-') === false) {
// 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']] = array(
'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) : '';
$data = array();
foreach ($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($this->_urls);
}
/**
* Save data to table
*
* @since 3.0
* @access private
*/
private function _save($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, $data));
}
/**
* Parse custom sitemap and return urls
*
* @since 1.1.1
* @access private
*/
private function _parse($sitemap)
{
/**
* Read via wp func to avoid allow_url_fopen = off
* @since 2.2.7
*/
$response = wp_remote_get($sitemap, array('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 ' . $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 ' . $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
$this->_parse($xml_array['sitemap']['loc']);
} else {
// parse multiple sitemaps
foreach ($xml_array['sitemap'] as $val) {
$val = (array) $val;
if (!empty($val['loc'])) {
$this->_parse($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[] = $xml_array['url']['loc'];
} else {
foreach ($xml_array['url'] as $val) {
$val = (array) $val;
if (!empty($val['loc'])) {
$this->_urls[] = $val['loc'];
}
}
}
}
}
}