golden hour

/home/godaofbq/elitehyperbarics.com/wp-content/plugins/litespeed-cache/src

File/Folder	Size	Actions
activation.cls.php	14.99 KB
admin-display.cls.php	33.22 KB
admin-settings.cls.php	9.52 KB
admin.cls.php	4.44 KB
api.cls.php	11.08 KB
avatar.cls.php	6.06 KB
base.cls.php	30.23 KB
cdn	-
cdn-setup.cls.php	10.45 KB
cdn.cls.php	13.13 KB
cloud.cls.php	42.48 KB
conf.cls.php	18.58 KB
control.cls.php	21.75 KB
core.cls.php	20.05 KB
crawler-map.cls.php	14 KB
crawler.cls.php	34.69 KB
css.cls.php	13.1 KB
data.cls.php	17.41 KB
data.upgrade.func.php	21.37 KB
data_structure	-
db-optm.cls.php	9.58 KB
debug2.cls.php	13.1 KB
doc.cls.php	4.74 KB
error.cls.php	6.91 KB
esi.cls.php	26.91 KB
file.cls.php	10.13 KB
gui.cls.php	27.45 KB
health.cls.php	2.89 KB
htaccess.cls.php	23.95 KB
img-optm.cls.php	60.24 KB
import.cls.php	4.15 KB
instance.cls.php	154 B
lang.cls.php	15.47 KB
localization.cls.php	3.38 KB
media.cls.php	31.08 KB
metabox.cls.php	4.21 KB
object-cache.cls.php	15.92 KB
object.lib.php	33.97 KB
optimize.cls.php	36.67 KB
optimizer.cls.php	9.02 KB
placeholder.cls.php	14.15 KB
preset.cls.php	5.43 KB
purge.cls.php	29.79 KB
report.cls.php	5.33 KB
rest.cls.php	7.87 KB
root.cls.php	12.6 KB
router.cls.php	19.08 KB
str.cls.php	1.37 KB
tag.cls.php	8.62 KB
task.cls.php	5.83 KB
tool.cls.php	3.29 KB
ucss.cls.php	14.39 KB
utility.cls.php	20.63 KB
vary.cls.php	19.17 KB
vpi.cls.php	7.41 KB

Edit: cdn.cls.php

<?php

/**
 * The CDN class.
 *
 * @since      	1.2.3
 * @since  		1.5 Moved into /inc
 * @package    	LiteSpeed
 * @subpackage 	LiteSpeed/inc
 * @author     	LiteSpeed Technologies <info@litespeedtech.com>
 */

namespace LiteSpeed;

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

class CDN extends Root
{
	const BYPASS = 'LITESPEED_BYPASS_CDN';

private $content;

private $_cfg_cdn;
	private $_cfg_url_ori;
	private $_cfg_ori_dir;
	private $_cfg_cdn_mapping = array();
	private $_cfg_cdn_exclude;

private $cdn_mapping_hosts = array();

/**
	 * Init
	 *
	 * @since  1.2.3
	 */
	public function init()
	{
		Debug2::debug2('[CDN] init');

if (defined(self::BYPASS)) {
			Debug2::debug2('CDN bypass');
			return;
		}

if (!Router::can_cdn()) {
			if (!defined(self::BYPASS)) {
				define(self::BYPASS, true);
			}
			return;
		}

$this->_cfg_cdn = $this->conf(Base::O_CDN);
		if (!$this->_cfg_cdn) {
			if (!defined(self::BYPASS)) {
				define(self::BYPASS, true);
			}
			return;
		}

$this->_cfg_url_ori = $this->conf(Base::O_CDN_ORI);
		// Parse cdn mapping data to array( 'filetype' => 'url' )
		$mapping_to_check = array(Base::CDN_MAPPING_INC_IMG, Base::CDN_MAPPING_INC_CSS, Base::CDN_MAPPING_INC_JS);
		foreach ($this->conf(Base::O_CDN_MAPPING) as $v) {
			if (!$v[Base::CDN_MAPPING_URL]) {
				continue;
			}
			$this_url = $v[Base::CDN_MAPPING_URL];
			$this_host = parse_url($this_url, PHP_URL_HOST);
			// Check img/css/js
			foreach ($mapping_to_check as $to_check) {
				if ($v[$to_check]) {
					Debug2::debug2('[CDN] mapping ' . $to_check . ' -> ' . $this_url);

// If filetype to url is one to many, make url be an array
					$this->_append_cdn_mapping($to_check, $this_url);

if (!in_array($this_host, $this->cdn_mapping_hosts)) {
						$this->cdn_mapping_hosts[] = $this_host;
					}
				}
			}
			// Check file types
			if ($v[Base::CDN_MAPPING_FILETYPE]) {
				foreach ($v[Base::CDN_MAPPING_FILETYPE] as $v2) {
					$this->_cfg_cdn_mapping[Base::CDN_MAPPING_FILETYPE] = true;

// If filetype to url is one to many, make url be an array
					$this->_append_cdn_mapping($v2, $this_url);

if (!in_array($this_host, $this->cdn_mapping_hosts)) {
						$this->cdn_mapping_hosts[] = $this_host;
					}
				}
				Debug2::debug2('[CDN] mapping ' . implode(',', $v[Base::CDN_MAPPING_FILETYPE]) . ' -> ' . $this_url);
			}
		}

if (!$this->_cfg_url_ori || !$this->_cfg_cdn_mapping) {
			if (!defined(self::BYPASS)) {
				define(self::BYPASS, true);
			}
			return;
		}

$this->_cfg_ori_dir = $this->conf(Base::O_CDN_ORI_DIR);
		// In case user customized upload path
		if (defined('UPLOADS')) {
			$this->_cfg_ori_dir[] = UPLOADS;
		}

// Check if need preg_replace
		$this->_cfg_url_ori = Utility::wildcard2regex($this->_cfg_url_ori);

$this->_cfg_cdn_exclude = $this->conf(Base::O_CDN_EXC);

if (!empty($this->_cfg_cdn_mapping[Base::CDN_MAPPING_INC_IMG])) {
			// Hook to srcset
			if (function_exists('wp_calculate_image_srcset')) {
				add_filter('wp_calculate_image_srcset', array($this, 'srcset'), 999);
			}
			// Hook to mime icon
			add_filter('wp_get_attachment_image_src', array($this, 'attach_img_src'), 999);
			add_filter('wp_get_attachment_url', array($this, 'url_img'), 999);
		}

if (!empty($this->_cfg_cdn_mapping[Base::CDN_MAPPING_INC_CSS])) {
			add_filter('style_loader_src', array($this, 'url_css'), 999);
		}

if (!empty($this->_cfg_cdn_mapping[Base::CDN_MAPPING_INC_JS])) {
			add_filter('script_loader_src', array($this, 'url_js'), 999);
		}

add_filter('litespeed_buffer_finalize', array($this, 'finalize'), 30);
	}

/**
	 * Associate all filetypes with url
	 *
	 * @since  2.0
	 * @access private
	 */
	private function _append_cdn_mapping($filetype, $url)
	{
		// If filetype to url is one to many, make url be an array
		if (empty($this->_cfg_cdn_mapping[$filetype])) {
			$this->_cfg_cdn_mapping[$filetype] = $url;
		} elseif (is_array($this->_cfg_cdn_mapping[$filetype])) {
			// Append url to filetype
			$this->_cfg_cdn_mapping[$filetype][] = $url;
		} else {
			// Convert _cfg_cdn_mapping from string to array
			$this->_cfg_cdn_mapping[$filetype] = array($this->_cfg_cdn_mapping[$filetype], $url);
		}
	}

/**
	 * If include css/js in CDN
	 *
	 * @since  1.6.2.1
	 * @return bool true if included in CDN
	 */
	public function inc_type($type)
	{
		if ($type == 'css' && !empty($this->_cfg_cdn_mapping[Base::CDN_MAPPING_INC_CSS])) {
			return true;
		}

if ($type == 'js' && !empty($this->_cfg_cdn_mapping[Base::CDN_MAPPING_INC_JS])) {
			return true;
		}

return false;
	}

/**
	 * Run CDN process
	 * NOTE: As this is after cache finalized, can NOT set any cache control anymore
	 *
	 * @since  1.2.3
	 * @access public
	 * @return  string The content that is after optimization
	 */
	public function finalize($content)
	{
		$this->content = $content;

$this->_finalize();
		return $this->content;
	}

/**
	 * Replace CDN url
	 *
	 * @since  1.2.3
	 * @access private
	 */
	private function _finalize()
	{
		if (defined(self::BYPASS)) {
			return;
		}

Debug2::debug('CDN _finalize');

// Start replacing img src
		if (!empty($this->_cfg_cdn_mapping[Base::CDN_MAPPING_INC_IMG])) {
			$this->_replace_img();
			$this->_replace_inline_css();
		}

if (!empty($this->_cfg_cdn_mapping[Base::CDN_MAPPING_FILETYPE])) {
			$this->_replace_file_types();
		}
	}

/**
	 * Parse all file types
	 *
	 * @since  1.2.3
	 * @access private
	 */
	private function _replace_file_types()
	{
		$ele_to_check = $this->conf(Base::O_CDN_ATTR);

foreach ($ele_to_check as $v) {
			if (!$v || strpos($v, '.') === false) {
				Debug2::debug2('[CDN] replace setting bypassed: no . attribute ' . $v);
				continue;
			}

Debug2::debug2('[CDN] replace attribute ' . $v);

$v = explode('.', $v);
			$attr = preg_quote($v[1], '#');
			if ($v[0]) {
				$pattern = '#<' . preg_quote($v[0], '#') . '([^>]+)' . $attr . '=([\'"])(.+)\g{2}#iU';
			} else {
				$pattern = '# ' . $attr . '=([\'"])(.+)\g{1}#iU';
			}

preg_match_all($pattern, $this->content, $matches);

if (empty($matches[$v[0] ? 3 : 2])) {
				continue;
			}

foreach ($matches[$v[0] ? 3 : 2] as $k2 => $url) {
				// Debug2::debug2( '[CDN] check ' . $url );
				$postfix = '.' . pathinfo((string) parse_url($url, PHP_URL_PATH), PATHINFO_EXTENSION);
				if (!array_key_exists($postfix, $this->_cfg_cdn_mapping)) {
					// Debug2::debug2( '[CDN] non-existed postfix ' . $postfix );
					continue;
				}

Debug2::debug2('[CDN] matched file_type ' . $postfix . ' : ' . $url);

if (!($url2 = $this->rewrite($url, Base::CDN_MAPPING_FILETYPE, $postfix))) {
					continue;
				}

$attr = str_replace($url, $url2, $matches[0][$k2]);
				$this->content = str_replace($matches[0][$k2], $attr, $this->content);
			}
		}
	}

/**
	 * Parse all images
	 *
	 * @since  1.2.3
	 * @access private
	 */
	private function _replace_img()
	{
		preg_match_all('#<img([^>]+?)src=([\'"\\\]*)([^\'"\s\\\>]+)([\'"\\\]*)([^>]*)>#i', $this->content, $matches);
		foreach ($matches[3] as $k => $url) {
			// Check if is a DATA-URI
			if (strpos($url, 'data:image') !== false) {
				continue;
			}

if (!($url2 = $this->rewrite($url, Base::CDN_MAPPING_INC_IMG))) {
				continue;
			}

$html_snippet = sprintf('<img %1$s src=%2$s %3$s>', $matches[1][$k], $matches[2][$k] . $url2 . $matches[4][$k], $matches[5][$k]);
			$this->content = str_replace($matches[0][$k], $html_snippet, $this->content);
		}
	}

/**
	 * Parse and replace all inline styles containing url()
	 *
	 * @since  1.2.3
	 * @access private
	 */
	private function _replace_inline_css()
	{
		Debug2::debug2('[CDN] _replace_inline_css', $this->_cfg_cdn_mapping);

/**
		 * Excludes `\` from URL matching
		 * @see  #959152 - WordPress LSCache CDN Mapping causing malformed URLS
		 * @see  #685485
		 * @since 3.0
		 */
		preg_match_all('/url$(?![\'"]?data)[\'"]?([^$\'"\\\]+)[\'"]?\)/i', $this->content, $matches);
		foreach ($matches[1] as $k => $url) {
			$url = str_replace(array(' ', '\t', '\n', '\r', '\0', '\x0B', '"', "'", '&quot;', '&#039;'), '', $url);

// Parse file postfix
			$postfix = '.' . pathinfo(parse_url($url, PHP_URL_PATH), PATHINFO_EXTENSION);
			if (array_key_exists($postfix, $this->_cfg_cdn_mapping)) {
				Debug2::debug2('[CDN] matched file_type ' . $postfix . ' : ' . $url);
				if (!($url2 = $this->rewrite($url, Base::CDN_MAPPING_FILETYPE, $postfix))) {
					continue;
				}
			} elseif (in_array($postfix, array('jpg', 'jpeg', 'png', 'gif', 'svg', 'webp', 'avif'))) {
				if (!($url2 = $this->rewrite($url, Base::CDN_MAPPING_INC_IMG))) {
					continue;
				}
			} else {
				continue;
			}

$attr = str_replace($matches[1][$k], $url2, $matches[0][$k]);
			$this->content = str_replace($matches[0][$k], $attr, $this->content);
		}

Debug2::debug2('[CDN] _replace_inline_css done');
	}

/**
	 * Hook to wp_get_attachment_image_src
	 *
	 * @since  1.2.3
	 * @since  1.7 Removed static from function
	 * @access public
	 * @param  array $img The URL of the attachment image src, the width, the height
	 * @return array
	 */
	public function attach_img_src($img)
	{
		if ($img && ($url = $this->rewrite($img[0], Base::CDN_MAPPING_INC_IMG))) {
			$img[0] = $url;
		}
		return $img;
	}

/**
	 * Try to rewrite one URL with CDN
	 *
	 * @since  1.7
	 * @access public
	 */
	public function url_img($url)
	{
		if ($url && ($url2 = $this->rewrite($url, Base::CDN_MAPPING_INC_IMG))) {
			$url = $url2;
		}
		return $url;
	}

/**
	 * Try to rewrite one URL with CDN
	 *
	 * @since  1.7
	 * @access public
	 */
	public function url_css($url)
	{
		if ($url && ($url2 = $this->rewrite($url, Base::CDN_MAPPING_INC_CSS))) {
			$url = $url2;
		}
		return $url;
	}

/**
	 * Try to rewrite one URL with CDN
	 *
	 * @since  1.7
	 * @access public
	 */
	public function url_js($url)
	{
		if ($url && ($url2 = $this->rewrite($url, Base::CDN_MAPPING_INC_JS))) {
			$url = $url2;
		}
		return $url;
	}

/**
	 * Hook to replace WP responsive images
	 *
	 * @since  1.2.3
	 * @since  1.7 Removed static from function
	 * @access public
	 * @param  array $srcs
	 * @return array
	 */
	public function srcset($srcs)
	{
		if ($srcs) {
			foreach ($srcs as $w => $data) {
				if (!($url = $this->rewrite($data['url'], Base::CDN_MAPPING_INC_IMG))) {
					continue;
				}
				$srcs[$w]['url'] = $url;
			}
		}
		return $srcs;
	}

/**
	 * Replace URL to CDN URL
	 *
	 * @since  1.2.3
	 * @access public
	 * @param  string $url
	 * @return string        Replaced URL
	 */
	public function rewrite($url, $mapping_kind, $postfix = false)
	{
		Debug2::debug2('[CDN] rewrite ' . $url);
		$url_parsed = parse_url($url);

if (empty($url_parsed['path'])) {
			Debug2::debug2('[CDN] -rewrite bypassed: no path');
			return false;
		}

// Only images under wp-cotnent/wp-includes can be replaced
		$is_internal_folder = Utility::str_hit_array($url_parsed['path'], $this->_cfg_ori_dir);
		if (!$is_internal_folder) {
			Debug2::debug2('[CDN] -rewrite failed: path not match: ' . LSCWP_CONTENT_FOLDER);
			return false;
		}

// Check if is external url
		if (!empty($url_parsed['host'])) {
			if (!Utility::internal($url_parsed['host']) && !$this->_is_ori_url($url)) {
				Debug2::debug2('[CDN] -rewrite failed: host not internal');
				return false;
			}
		}

$exclude = Utility::str_hit_array($url, $this->_cfg_cdn_exclude);
		if ($exclude) {
			Debug2::debug2('[CDN] -abort excludes ' . $exclude);
			return false;
		}

// Fill full url before replacement
		if (empty($url_parsed['host'])) {
			$url = Utility::uri2url($url);
			Debug2::debug2('[CDN] -fill before rewritten: ' . $url);

$url_parsed = parse_url($url);
		}

$scheme = !empty($url_parsed['scheme']) ? $url_parsed['scheme'] . ':' : '';
		if ($scheme) {
			// Debug2::debug2( '[CDN] -scheme from url: ' . $scheme );
		}

// Find the mapping url to be replaced to
		if (empty($this->_cfg_cdn_mapping[$mapping_kind])) {
			return false;
		}
		if ($mapping_kind !== Base::CDN_MAPPING_FILETYPE) {
			$final_url = $this->_cfg_cdn_mapping[$mapping_kind];
		} else {
			// select from file type
			$final_url = $this->_cfg_cdn_mapping[$postfix];
		}

// If filetype to url is one to many, need to random one
		if (is_array($final_url)) {
			$final_url = $final_url[mt_rand(0, count($final_url) - 1)];
		}

// Now lets replace CDN url
		foreach ($this->_cfg_url_ori as $v) {
			if (strpos($v, '*') !== false) {
				$url = preg_replace('#' . $scheme . $v . '#iU', $final_url, $url);
			} else {
				$url = str_replace($scheme . $v, $final_url, $url);
			}
		}
		Debug2::debug2('[CDN] -rewritten: ' . $url);

return $url;
	}

/**
	 * Check if is original URL of CDN or not
	 *
	 * @since  2.1
	 * @access private
	 */
	private function _is_ori_url($url)
	{
		$url_parsed = parse_url($url);

$scheme = !empty($url_parsed['scheme']) ? $url_parsed['scheme'] . ':' : '';

foreach ($this->_cfg_url_ori as $v) {
			$needle = $scheme . $v;
			if (strpos($v, '*') !== false) {
				if (preg_match('#' . $needle . '#iU', $url)) {
					return true;
				}
			} else {
				if (strpos($url, $needle) === 0) {
					return true;
				}
			}
		}

return false;
	}

/**
	 * Check if the host is the CDN internal host
	 *
	 * @since  1.2.3
	 *
	 */
	public static function internal($host)
	{
		if (defined(self::BYPASS)) {
			return false;
		}

$instance = self::cls();

return in_array($host, $instance->cdn_mapping_hosts); // todo: can add $this->_is_ori_url() check in future
	}
}