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ðŸ“„ activation.cls.php(14.9 KB)
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ðŸ“„ crawler.cls.php(40.64 KB)
ðŸ“„ css.cls.php(15.14 KB)
ðŸ“„ data.cls.php(17.61 KB)
ðŸ“„ data.upgrade.func.php(23.11 KB)
ðŸ“ data_structure
ðŸ“„ db-optm.cls.php(9.82 KB)
ðŸ“„ debug2.cls.php(13.08 KB)
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ðŸ“„ img-optm.cls.php(64.1 KB)
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ðŸ“„ lang.cls.php(14.89 KB)
ðŸ“„ localization.cls.php(3.39 KB)
ðŸ“„ media.cls.php(32.7 KB)
ðŸ“„ metabox.cls.php(4.21 KB)
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ðŸ“„ object.lib.php(33.97 KB)
ðŸ“„ optimize.cls.php(36.96 KB)
ðŸ“„ optimizer.cls.php(9.4 KB)
ðŸ“„ placeholder.cls.php(14.09 KB)
ðŸ“„ purge.cls.php(30.49 KB)
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ðŸ“„ tag.cls.php(8.9 KB)
ðŸ“„ task.cls.php(5.92 KB)
ðŸ“„ tool.cls.php(3.42 KB)
ðŸ“„ ucss.cls.php(14.17 KB)
ðŸ“„ utility.cls.php(20.67 KB)
ðŸ“„ vary.cls.php(20.09 KB)
ðŸ“„ vpi.cls.php(7.19 KB)

Editing: ucss.cls.php

<?php

/**
 * The ucss class.
 *
 * @since      	5.1
 */

namespace LiteSpeed;

defined('WPINC') || exit();

class UCSS extends Base
{
	const LOG_TAG = '[UCSS]';

const TYPE_GEN = 'gen';
	const TYPE_CLEAR_Q = 'clear_q';

protected $_summary;
	private $_ucss_whitelist;
	private $_queue;

/**
	 * Init
	 *
	 * @since  3.0
	 */
	public function __construct()
	{
		$this->_summary = self::get_summary();

add_filter('litespeed_ucss_whitelist', array($this->cls('Data'), 'load_ucss_whitelist'));
	}

/**
	 * Uniform url tag for ucss usage
	 * @since 4.7
	 */
	public static function get_url_tag($request_url = false)
	{
		$url_tag = $request_url;
		if (is_404()) {
			$url_tag = '404';
		} elseif (apply_filters('litespeed_ucss_per_pagetype', false)) {
			$url_tag = Utility::page_type();
			self::debug('litespeed_ucss_per_pagetype filter altered url to ' . $url_tag);
		}

return $url_tag;
	}

/**
	 * Get UCSS path
	 *
	 * @since  4.0
	 */
	public function load($request_url, $dry_run = false)
	{
		// Check UCSS URI excludes
		$ucss_exc = apply_filters('litespeed_ucss_exc', $this->conf(self::O_OPTM_UCSS_EXC));
		if ($ucss_exc && ($hit = Utility::str_hit_array($request_url, $ucss_exc))) {
			self::debug('UCSS bypassed due to UCSS URI Exclude setting: ' . $hit);
			Core::comment('QUIC.cloud UCSS bypassed by setting');
			return false;
		}

$filepath_prefix = $this->_build_filepath_prefix('ucss');

$url_tag = self::get_url_tag($request_url);

$vary = $this->cls('Vary')->finalize_full_varies();
		$filename = $this->cls('Data')->load_url_file($url_tag, $vary, 'ucss');
		if ($filename) {
			$static_file = LITESPEED_STATIC_DIR . $filepath_prefix . $filename . '.css';

if (file_exists($static_file)) {
				self::debug2('existing ucss ' . $static_file);
				// Check if is error comment inside only
				$tmp = File::read($static_file);
				if (substr($tmp, 0, 2) == '/*' && substr(trim($tmp), -2) == '*/') {
					self::debug2('existing ucss is error only: ' . $tmp);
					Core::comment('QUIC.cloud UCSS bypassed due to generation error ❌ ' . $filepath_prefix . $filename . '.css');
					return false;
				}

Core::comment('QUIC.cloud UCSS loaded ✅');

return $filename . '.css';
			}
		}

if ($dry_run) {
			return false;
		}

Core::comment('QUIC.cloud UCSS in queue');

$uid = get_current_user_id();

$ua = $this->_get_ua();

// Store it for cron
		$this->_queue = $this->load_queue('ucss');

if (count($this->_queue) > 500) {
			self::debug('UCSS Queue is full - 500');
			return false;
		}

$queue_k = (strlen($vary) > 32 ? md5($vary) : $vary) . ' ' . $url_tag;
		$this->_queue[$queue_k] = array(
			'url' => apply_filters('litespeed_ucss_url', $request_url),
			'user_agent' => substr($ua, 0, 200),
			'is_mobile' => $this->_separate_mobile(),
			'is_webp' => $this->cls('Media')->webp_support() ? 1 : 0,
			'uid' => $uid,
			'vary' => $vary,
			'url_tag' => $url_tag,
		); // Current UA will be used to request
		$this->save_queue('ucss', $this->_queue);
		self::debug('Added queue_ucss [url_tag] ' . $url_tag . ' [UA] ' . $ua . ' [vary] ' . $vary . ' [uid] ' . $uid);

// Prepare cache tag for later purge
		Tag::add('UCSS.' . md5($queue_k));

return false;
	}

/**
	 * Get User Agent
	 *
	 * @since  5.3
	 */
	private function _get_ua()
	{
		return !empty($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';
	}

/**
	 * Add rows to q
	 *
	 * @since  5.3
	 */
	public function add_to_q($url_files)
	{
		// Store it for cron
		$this->_queue = $this->load_queue('ucss');

if (count($this->_queue) > 500) {
			self::debug('UCSS Queue is full - 500');
			return false;
		}

$ua = $this->_get_ua();
		foreach ($url_files as $url_file) {
			$vary = $url_file['vary'];
			$request_url = $url_file['url'];
			$is_mobile = $url_file['mobile'];
			$is_webp = $url_file['webp'];
			$url_tag = self::get_url_tag($request_url);

$queue_k = (strlen($vary) > 32 ? md5($vary) : $vary) . ' ' . $url_tag;
			$q = array(
				'url' => apply_filters('litespeed_ucss_url', $request_url),
				'user_agent' => substr($ua, 0, 200),
				'is_mobile' => $is_mobile,
				'is_webp' => $is_webp,
				'uid' => false,
				'vary' => $vary,
				'url_tag' => $url_tag,
			); // Current UA will be used to request

self::debug('Added queue_ucss [url_tag] ' . $url_tag . ' [UA] ' . $ua . ' [vary] ' . $vary . ' [uid] false');
			$this->_queue[$queue_k] = $q;
		}
		$this->save_queue('ucss', $this->_queue);
	}

/**
	 * Generate UCSS
	 *
	 * @since  4.0
	 */
	public static function cron($continue = false)
	{
		$_instance = self::cls();
		return $_instance->_cron_handler($continue);
	}

/**
	 * Handle UCSS cron
	 *
	 * @since 4.2
	 */
	private function _cron_handler($continue)
	{
		$this->_queue = $this->load_queue('ucss');

if (empty($this->_queue)) {
			return;
		}

// For cron, need to check request interval too
		if (!$continue) {
			if (!empty($this->_summary['curr_request']) && time() - $this->_summary['curr_request'] < 300 && !$this->conf(self::O_DEBUG)) {
				self::debug('Last request not done');
				return;
			}
		}

$i = 0;
		foreach ($this->_queue as $k => $v) {
			if (!empty($v['_status'])) {
				continue;
			}

self::debug('cron job [tag] ' . $k . ' [url] ' . $v['url'] . ($v['is_mobile'] ? ' 📱 ' : '') . ' [UA] ' . $v['user_agent']);

if (!isset($v['is_webp'])) {
				$v['is_webp'] = false;
			}

$i++;
			$res = $this->_send_req($v['url'], $k, $v['uid'], $v['user_agent'], $v['vary'], $v['url_tag'], $v['is_mobile'], $v['is_webp']);
			if (!$res) {
				// Status is wrong, drop this this->_queue
				$this->_queue = $this->load_queue('ucss');
				unset($this->_queue[$k]);
				$this->save_queue('ucss', $this->_queue);

if (!$continue) {
					return;
				}

if ($i > 3) {
					GUI::print_loading(count($this->_queue), 'UCSS');
					return Router::self_redirect(Router::ACTION_UCSS, self::TYPE_GEN);
				}

continue;
			}

// Exit queue if out of quota or service is hot
			if ($res === 'out_of_quota' || $res === 'svc_hot') {
				return;
			}

$this->_queue = $this->load_queue('ucss');
			$this->_queue[$k]['_status'] = 'requested';
			$this->save_queue('ucss', $this->_queue);
			self::debug('Saved to queue [k] ' . $k);

// only request first one
			if (!$continue) {
				return;
			}

if ($i > 3) {
				GUI::print_loading(count($this->_queue), 'UCSS');
				return Router::self_redirect(Router::ACTION_UCSS, self::TYPE_GEN);
			}
		}
	}

/**
	 * Send to QC API to generate UCSS
	 *
	 * @since  2.3
	 * @access private
	 */
	private function _send_req($request_url, $queue_k, $uid, $user_agent, $vary, $url_tag, $is_mobile, $is_webp)
	{
		// Check if has credit to push or not
		$err = false;
		$allowance = $this->cls('Cloud')->allowance(Cloud::SVC_UCSS, $err);
		if (!$allowance) {
			self::debug('❌ No credit: ' . $err);
			$err && Admin_Display::error(Error::msg($err));
			return 'out_of_quota';
		}

set_time_limit(120);

// Update css request status
		$this->_summary['curr_request'] = time();
		self::save_summary();

// Gather guest HTML to send
		$html = $this->cls('CSS')->prepare_html($request_url, $user_agent, $uid);

if (!$html) {
			return false;
		}

// Parse HTML to gather all CSS content before requesting
		$css = false;
		list(, $html) = $this->prepare_css($html, $is_webp, true); // Use this to drop CSS from HTML as we don't need those CSS to generate UCSS
		$filename = $this->cls('Data')->load_url_file($url_tag, $vary, 'css');
		$filepath_prefix = $this->_build_filepath_prefix('css');
		$static_file = LITESPEED_STATIC_DIR . $filepath_prefix . $filename . '.css';
		self::debug('Checking combined file ' . $static_file);
		if (file_exists($static_file)) {
			$css = File::read($static_file);
		}

if (!$css) {
			self::debug('❌ No combined css');
			return false;
		}

$data = array(
			'url' => $request_url,
			'queue_k' => $queue_k,
			'user_agent' => $user_agent,
			'is_mobile' => $is_mobile ? 1 : 0, // todo:compatible w/ tablet
			'is_webp' => $is_webp ? 1 : 0,
			'html' => $html,
			'css' => $css,
		);
		if (!isset($this->_ucss_whitelist)) {
			$this->_ucss_whitelist = $this->_filter_whitelist();
		}
		$data['whitelist'] = $this->_ucss_whitelist;

self::debug('Generating: ', $data);

$json = Cloud::post(Cloud::SVC_UCSS, $data, 30);
		if (!is_array($json)) {
			return $json;
		}

// Old version compatibility
		if (empty($json['status'])) {
			if (!empty($json['ucss'])) {
				$this->_save_con('ucss', $json['ucss'], $queue_k, $is_mobile, $is_webp);
			}

// Delete the row
			return false;
		}

// Unknown status, remove this line
		if ($json['status'] != 'queued') {
			return false;
		}

// Save summary data
		$this->_summary['last_spent'] = time() - $this->_summary['curr_request'];
		$this->_summary['last_request'] = $this->_summary['curr_request'];
		$this->_summary['curr_request'] = 0;
		self::save_summary();

return true;
	}

/**
	 * Save UCSS content
	 *
	 * @since 4.2
	 */
	private function _save_con($type, $css, $queue_k, $is_mobile, $is_webp)
	{
		// Add filters
		$css = apply_filters('litespeed_' . $type, $css, $queue_k);
		self::debug2('con: ', $css);

if (substr($css, 0, 2) == '/*' && substr($css, -2) == '*/') {
			self::debug('❌ empty ' . $type . ' [content] ' . $css);
			// continue; // Save the error info too
		}

// Write to file
		$filecon_md5 = md5($css);

$filepath_prefix = $this->_build_filepath_prefix($type);
		$static_file = LITESPEED_STATIC_DIR . $filepath_prefix . $filecon_md5 . '.css';

File::save($static_file, $css, true);

$url_tag = $this->_queue[$queue_k]['url_tag'];
		$vary = $this->_queue[$queue_k]['vary'];
		self::debug2("Save URL to file [file] $static_file [vary] $vary");

$this->cls('Data')->save_url($url_tag, $vary, $type, $filecon_md5, dirname($static_file), $is_mobile, $is_webp);

Purge::add(strtoupper($type) . '.' . md5($queue_k));
	}

/**
	 * Prepare CSS from HTML for CCSS generation only. UCSS will used combined CSS directly.
	 * Prepare refined HTML for both CCSS and UCSS.
	 *
	 * @since  3.4.3
	 */
	public function prepare_css($html, $is_webp = false, $dryrun = false)
	{
		$css = '';
		preg_match_all('#<link ([^>]+)/?>|<style([^>]*)>([^<]+)</style>#isU', $html, $matches, PREG_SET_ORDER);
		foreach ($matches as $match) {
			$debug_info = '';
			if (strpos($match[0], '<link') === 0) {
				$attrs = Utility::parse_attr($match[1]);

if (empty($attrs['rel'])) {
					continue;
				}

if ($attrs['rel'] != 'stylesheet') {
					if ($attrs['rel'] != 'preload' || empty($attrs['as']) || $attrs['as'] != 'style') {
						continue;
					}
				}

if (!empty($attrs['media']) && strpos($attrs['media'], 'print') !== false) {
					continue;
				}

if (empty($attrs['href'])) {
					continue;
				}

// Check Google fonts hit
				if (strpos($attrs['href'], 'fonts.googleapis.com') !== false) {
					$html = str_replace($match[0], '', $html);
					continue;
				}

$debug_info = $attrs['href'];

// Load CSS content
				if (!$dryrun) {
					// Dryrun will not load CSS but just drop them
					$con = $this->cls('Optimizer')->load_file($attrs['href']);
					if (!$con) {
						continue;
					}
				} else {
					$con = '';
				}
			} else {
				// Inline style
				$attrs = Utility::parse_attr($match[2]);

if (!empty($attrs['media']) && strpos($attrs['media'], 'print') !== false) {
					continue;
				}

Debug2::debug2('[CSS] Load inline CSS ' . substr($match[3], 0, 100) . '...', $attrs);
				$con = $match[3];

$debug_info = '__INLINE__';
			}

$con = Optimizer::minify_css($con);
			if ($is_webp && $this->cls('Media')->webp_support()) {
				$con = $this->cls('Media')->replace_background_webp($con);
			}

if (!empty($attrs['media']) && $attrs['media'] !== 'all') {
				$con = '@media ' . $attrs['media'] . '{' . $con . "}\n";
			} else {
				$con = $con . "\n";
			}

$con = '/* ' . $debug_info . ' */' . $con;
			$css .= $con;

$html = str_replace($match[0], '', $html);
		}

return array($css, $html);
	}

/**
	 * Filter the comment content, add quotes to selector from whitelist. Return the json
	 *
	 * @since 3.3
	 */
	private function _filter_whitelist()
	{
		$whitelist = array();
		$list = apply_filters('litespeed_ucss_whitelist', $this->conf(self::O_OPTM_UCSS_SELECTOR_WHITELIST));
		foreach ($list as $k => $v) {
			if (substr($v, 0, 2) === '//') {
				continue;
			}
			// Wrap in quotes for selectors
			if (substr($v, 0, 1) !== '/' && strpos($v, '"') === false && strpos($v, "'") === false) {
				// $v = "'$v'";
			}
			$whitelist[] = $v;
		}

return $whitelist;
	}

/**
	 * Notify finished from server
	 * @since 5.1
	 */
	public function notify()
	{
		$post_data = \json_decode(file_get_contents('php://input'), true);
		if (is_null($post_data)) {
			$post_data = $_POST;
		}
		self::debug('notify() data', $post_data);

$this->_queue = $this->load_queue('ucss');

list($post_data) = $this->cls('Cloud')->extract_msg($post_data, 'ucss');

$notified_data = $post_data['data'];
		if (empty($notified_data) || !is_array($notified_data)) {
			self::debug('❌ notify exit: no notified data');
			return Cloud::err('no notified data');
		}

// Check if its in queue or not
		$valid_i = 0;
		foreach ($notified_data as $v) {
			if (empty($v['request_url'])) {
				self::debug('❌ notify bypass: no request_url', $v);
				continue;
			}
			if (empty($v['queue_k'])) {
				self::debug('❌ notify bypass: no queue_k', $v);
				continue;
			}

if (empty($this->_queue[$v['queue_k']])) {
				self::debug('❌ notify bypass: no this queue [q_k]' . $v['queue_k']);
				continue;
			}

// Save data
			if (!empty($v['data_ucss'])) {
				$is_mobile = $this->_queue[$v['queue_k']]['is_mobile'];
				$is_webp = $this->_queue[$v['queue_k']]['is_webp'];
				$this->_save_con('ucss', $v['data_ucss'], $v['queue_k'], $is_mobile, $is_webp);

$valid_i++;
			}

unset($this->_queue[$v['queue_k']]);
			self::debug('notify data handled, unset queue [q_k] ' . $v['queue_k']);
		}
		$this->save_queue('ucss', $this->_queue);

self::debug('notified');

return Cloud::ok(array('count' => $valid_i));
	}

/**
	 * Handle all request actions from main cls
	 *
	 * @since  2.3
	 * @access public
	 */
	public function handler()
	{
		$type = Router::verify_type();

switch ($type) {
			case self::TYPE_GEN:
				self::cron(true);
				break;

case self::TYPE_CLEAR_Q:
				$this->clear_q('ucss');
				break;

default:
				break;
		}

Admin::redirect();
	}
}

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