golden hour

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

File/Folder	Size	Actions
activation.cls.php	17.62 KB
admin-display.cls.php	48.76 KB
admin-settings.cls.php	12.77 KB
admin.cls.php	6.13 KB
api.cls.php	10.44 KB
avatar.cls.php	9.25 KB
base.cls.php	37.66 KB
cdn	-
cdn.cls.php	17.76 KB
cloud-auth-callback.trait.php	10.43 KB
cloud-auth-ip.trait.php	4.33 KB
cloud-auth.trait.php	9.38 KB
cloud-misc.trait.php	10.32 KB
cloud-node.trait.php	5.95 KB
cloud-queue-svc.cls.php	9.33 KB
cloud-request.trait.php	19.68 KB
cloud.cls.php	7.32 KB
conf.cls.php	19.53 KB
control.cls.php	24.35 KB
core.cls.php	21.53 KB
crawler-map.cls.php	22.3 KB
crawler.cls.php	44 KB
css.cls.php	7.26 KB
data.cls.php	22.2 KB
data.upgrade.func.php	6.41 KB
data_structure	-
db-optm.cls.php	15.35 KB
debug2.cls.php	18.4 KB
doc.cls.php	5.45 KB
error.cls.php	7.35 KB
esi.cls.php	31.37 KB
file.cls.php	13.75 KB
guest.cls.php	2.75 KB
gui.cls.php	35.09 KB
health.cls.php	4.66 KB
htaccess.cls.php	29.81 KB
img-optm-manage.trait.php	31.25 KB
img-optm-pull.trait.php	22.1 KB
img-optm-send.trait.php	20.77 KB
img-optm.cls.php	5.25 KB
import.cls.php	4.29 KB
import.preset.cls.php	5.5 KB
lang.cls.php	17.02 KB
localization.cls.php	4.03 KB
media.cls.php	44.06 KB
metabox.cls.php	5.29 KB
object-cache-wp.cls.php	18.82 KB
object-cache.cls.php	21.82 KB
object.lib.php	13.85 KB
optimax.cls.php	8.94 KB
optimize.cls.php	38.74 KB
optimizer.cls.php	12.71 KB
placeholder.cls.php	17.64 KB
purge.cls.php	35.48 KB
report.cls.php	7.53 KB
rest.cls.php	7.95 KB
root.cls.php	14.29 KB
router.cls.php	20.86 KB
str.cls.php	3.08 KB
tag.cls.php	9.26 KB
task.cls.php	8.98 KB
tool.cls.php	4.58 KB
ucss.cls.php	7.34 KB
utility.cls.php	27.11 KB
vary.cls.php	21.33 KB
vpi.cls.php	4.25 KB

Edit: cdn.cls.php

<?php
/**
 * CDN handling for LiteSpeed Cache.
 *
 * Rewrites eligible asset URLs to configured CDN endpoints and integrates with WordPress filters.
 *
 * @since 1.2.3
 * @package LiteSpeed
 */

namespace LiteSpeed;

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

/**
 * Class CDN
 *
 * Processes page content and WordPress asset URLs to map to CDN domains according to settings.
 */
class CDN extends Root {
	const LOG_TAG = '[CDN]';

const BYPASS = 'LITESPEED_BYPASS_CDN';

/**
	 * The working HTML/content buffer being processed.
	 *
	 * @var string
	 */
	private $content;

/**
	 * Whether CDN feature is enabled.
	 *
	 * @var bool
	 */
	private $_cfg_cdn;

/**
	 * List of original site URLs (may include wildcards) to be replaced.
	 *
	 * @var string[]
	 */
	private $_cfg_url_ori;

/**
	 * List of directories considered internal/original for CDN rewriting.
	 *
	 * @var string[]
	 */
	private $_cfg_ori_dir;

/**
	 * CDN mapping rules; keys include mapping kinds or file extensions, values are URL(s).
	 *
	 * @var array<string,string|string[]>
	 */
	private $_cfg_cdn_mapping = [];

/**
	 * List of URL substrings/regex used to exclude items from CDN.
	 *
	 * @var string[]
	 */
	private $_cfg_cdn_exclude;

/**
	 * Hosts used by CDN mappings for quick membership checks.
	 *
	 * @var string[]
	 */
	private $cdn_mapping_hosts = [];

/**
	 * Auto-managed CDN filetype map keyed by mapping toggle.
	 *
	 * Single source of truth for the filetypes implicitly handled by the
	 * Include Images / Include CSS / Include JS toggles. Used by both
	 * CDN::init() (auto-injection) and Admin_Settings::save() (auto-stripping)
	 * so that the two sides stay in sync.
	 *
	 * @since 7.9
	 * @access public
	 * @return array<string,string[]>
	 */
	public static function auto_managed_filetypes() {
		return apply_filters(
			'litespeed_cdn_auto_managed_filetypes',
			[
				Base::CDN_MAPPING_INC_IMG => [ '.jpg', '.jpeg', '.png', '.gif', '.svg', '.webp', '.avif' ],
				Base::CDN_MAPPING_INC_CSS => [ '.css' ],
				Base::CDN_MAPPING_INC_JS  => [ '.js' ],
			]
		);
	}

/**
	 * Initialize CDN integration and register filters if enabled.
	 *
	 * @since 1.2.3
	 * @return void
	 */
	public function init() {
		self::debug2( 'init' );

if ( defined( self::BYPASS ) ) {
			self::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 = [ Base::CDN_MAPPING_INC_IMG, Base::CDN_MAPPING_INC_CSS, Base::CDN_MAPPING_INC_JS ];
		$auto_managed     = self::auto_managed_filetypes();
		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 = wp_parse_url( $this_url, PHP_URL_HOST );
			// Check img/css/js
			foreach ( $mapping_to_check as $to_check ) {
				if ( $v[ $to_check ] ) {
					self::debug2( '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 );

// Auto-inject extensions managed by this toggle via _append_cdn_mapping() to preserve multi-CDN one-to-many semantics.
					if ( ! empty( $auto_managed[ $to_check ] ) ) {
						foreach ( $auto_managed[ $to_check ] as $ext ) {
							$this->_append_cdn_mapping( $ext, $this_url );
						}
						// Set the FILETYPE sentinel so _replace_file_types() runs even with an empty manual textarea, otherwise CSS/JS replacement is silently broken.
						$this->_cfg_cdn_mapping[ Base::CDN_MAPPING_FILETYPE ] = true;
					}

if ( ! in_array( $this_host, $this->cdn_mapping_hosts, true ) ) {
						$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, true ) ) {
						$this->cdn_mapping_hosts[] = $this_host;
					}
				}
				self::debug2( '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', [ $this, 'srcset' ], 999 );
			}
			// Hook to mime icon
			add_filter( 'wp_get_attachment_image_src', [ $this, 'attach_img_src' ], 999 );
			add_filter( 'wp_get_attachment_url', [ $this, 'url_img' ], 999 );
		}

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

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

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

/**
	 * Associate all filetypes with CDN URL.
	 *
	 * @since 2.0
	 * @access private
	 *
	 * @param string $filetype Mapping key (e.g., extension or mapping constant).
	 * @param string $url      CDN base URL to use for this mapping.
	 * @return void
	 */
	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 ] = [ $this->_cfg_cdn_mapping[ $filetype ], $url ];
		}
	}

/**
	 * Whether the given type is included in CDN mappings.
	 *
	 * @since 1.6.2.1
	 *
	 * @param string $type 'css' or 'js'.
	 * @return bool True if included in CDN.
	 */
	public function inc_type( $type ) {
		if ( 'css' === $type && ! empty( $this->_cfg_cdn_mapping[ Base::CDN_MAPPING_INC_CSS ] ) ) {
			return true;
		}

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

return false;
	}

/**
	 * Run CDN processing on finalized buffer.
	 * NOTE: After cache finalized, cannot change cache control.
	 *
	 * @since 1.2.3
	 * @access public
	 *
	 * @param string $content The HTML/content buffer.
	 * @return string The processed content.
	 */
	public function finalize( $content ) {
		// Bypass REST JSON: HTML rewrites would break its escaping. Must check here, not init() — REST_REQUEST is undefined there.
		if ( $this->cls( 'REST' )->is_rest() ) {
			self::debug( 'bypassed: REST response' );
			return $content;
		}

$this->content = $content;

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

/**
	 * Replace eligible URLs with CDN URLs in the working buffer.
	 *
	 * @since 1.2.3
	 * @access private
	 * @return void
	 */
	private function _finalize() {
		if ( defined( self::BYPASS ) ) {
			return;
		}

self::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 and replace according to configured attributes.
	 *
	 * @since 1.2.3
	 * @access private
	 * @return void
	 */
	private function _replace_file_types() {
		$ele_to_check = $this->conf( Base::O_CDN_ATTR );

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

self::debug2( '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) {
				// self::debug2( 'check ' . $url );
				$postfix = '.' . pathinfo((string) wp_parse_url($url, PHP_URL_PATH), PATHINFO_EXTENSION);
				if (!array_key_exists($postfix, $this->_cfg_cdn_mapping)) {
					// self::debug2( 'non-existed postfix ' . $postfix );
					continue;
				}

self::debug2( 'matched file_type ' . $postfix . ' : ' . $url );

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

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

/**
	 * Parse all images and replace their src attributes.
	 *
	 * @since 1.2.3
	 * @access private
	 * @return void
	 */
	private function _replace_img() {
		preg_match_all( '#<img([^>]+?)src=([\'"\\\]*)([^\'"\s\\\>]+)([\'"\\\]*)([^>]*)>#i', $this->content, $matches );
		foreach ( $matches[3] as $k => $url ) {
			// Backslash by the quote = escaped JSON/JS context; rewriting would corrupt the escaping.
			if ( false !== strpos( $matches[2][ $k ], '\\' ) || false !== strpos( $matches[4][ $k ], '\\' ) ) {
				continue;
			}

// Check if is a DATA-URI
			if ( false !== strpos( $url, 'data:image' ) ) {
				continue;
			}

$url2 = $this->rewrite( $url, Base::CDN_MAPPING_INC_IMG );
			if ( ! $url2 ) {
				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
	 * @return void
	 */
	private function _replace_inline_css() {
		self::debug2( '_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( [ ' ', '\t', '\n', '\r', '\0', '\x0B', '"', "'", '&quot;', '&#039;' ], '', $url );

// Skip escaped JSON/JS contexts — same family as #959152.
			if ( false !== strpos( $url, '\\' ) ) {
				continue;
			}

// Parse file postfix
			$parsed_url = wp_parse_url( $url, PHP_URL_PATH );
			if ( ! $parsed_url ) {
				continue;
			}

$postfix = '.' . pathinfo( $parsed_url, PATHINFO_EXTENSION );
			if ( array_key_exists( $postfix, $this->_cfg_cdn_mapping ) ) {
				self::debug2( 'matched file_type ' . $postfix . ' : ' . $url );
				$url2 = $this->rewrite( $url, Base::CDN_MAPPING_FILETYPE, $postfix );
				if ( ! $url2 ) {
					continue;
				}
			} elseif ( in_array( $postfix, [ 'jpg', 'jpeg', 'png', 'gif', 'svg', 'webp', 'avif' ], true ) ) {
				$url2 = $this->rewrite( $url, Base::CDN_MAPPING_INC_IMG );
				if ( ! $url2 ) {
					continue;
				}
			} else {
				continue;
			}

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

self::debug2( '_replace_inline_css done' );
	}

/**
	 * Filter: wp_get_attachment_image_src.
	 *
	 * @since 1.2.3
	 * @since 1.7 Removed static from function.
	 * @access public
	 *
	 * @param array{0:string,1:int,2:int} $img The URL of the attachment image src, the width, the height.
	 * @return array{0:string,1:int,2:int}
	 */
	public function attach_img_src( $img ) {
		if ( $img ) {
			$url = $this->rewrite( $img[0], Base::CDN_MAPPING_INC_IMG );
			if ( $url ) {
				$img[0] = $url;
			}
		}
		return $img;
	}

/**
	 * Try to rewrite one image URL with CDN.
	 *
	 * @since 1.7
	 * @access public
	 *
	 * @param string $url Original URL.
	 * @return string URL after rewriting, or original if not applicable.
	 */
	public function url_img( $url ) {
		if ( $url ) {
			$url2 = $this->rewrite( $url, Base::CDN_MAPPING_INC_IMG );
			if ( $url2 ) {
				$url = $url2;
			}
		}
		return $url;
	}

/**
	 * Try to rewrite one CSS URL with CDN.
	 *
	 * @since 1.7
	 * @access public
	 *
	 * @param string $url Original URL.
	 * @return string URL after rewriting, or original if not applicable.
	 */
	public function url_css( $url ) {
		if ( $url ) {
			$url2 = $this->rewrite( $url, Base::CDN_MAPPING_INC_CSS );
			if ( $url2 ) {
				$url = $url2;
			}
		}
		return $url;
	}

/**
	 * Try to rewrite one JS URL with CDN.
	 *
	 * @since 1.7
	 * @access public
	 *
	 * @param string $url Original URL.
	 * @return string URL after rewriting, or original if not applicable.
	 */
	public function url_js( $url ) {
		if ( $url ) {
			$url2 = $this->rewrite( $url, Base::CDN_MAPPING_INC_JS );
			if ( $url2 ) {
				$url = $url2;
			}
		}
		return $url;
	}

/**
	 * Filter responsive image sources for CDN.
	 *
	 * @since 1.2.3
	 * @since 1.7 Removed static from function.
	 * @access public
	 *
	 * @param array<int,array{url:string}> $srcs Srcset array.
	 * @return array<int,array{url:string}>
	 */
	public function srcset( $srcs ) {
		if ( $srcs ) {
			foreach ( $srcs as $w => $data ) {
				$url = $this->rewrite( $data['url'], Base::CDN_MAPPING_INC_IMG );
				if ( ! $url ) {
					continue;
				}
				$srcs[ $w ]['url'] = $url;
			}
		}
		return $srcs;
	}

/**
	 * Replace an URL with mapped CDN URL, if applicable.
	 *
	 * @since 1.2.3
	 * @access public
	 *
	 * @param string       $url          Target URL.
	 * @param string       $mapping_kind Mapping kind (e.g., Base::CDN_MAPPING_INC_IMG or Base::CDN_MAPPING_FILETYPE).
	 * @param string|false $postfix      File extension (with dot) when mapping by file type.
	 * @return string|false Replaced URL on success, false when not applicable.
	 */
	public function rewrite( $url, $mapping_kind, $postfix = false ) {
		self::debug2( 'rewrite ' . $url );
		$url_parsed = wp_parse_url( $url );

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

// Only images under wp-content/wp-includes can be replaced
		$is_internal_folder = Utility::str_hit_array( $url_parsed['path'], $this->_cfg_ori_dir );
		if ( ! $is_internal_folder ) {
			self::debug2( '-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 ) ) {
				self::debug2( '-rewrite failed: host not internal' );
				return false;
			}
		}

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

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

$url_parsed = wp_parse_url( $url );
		}

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

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

// If filetype to url is one to many, need to random one
		if ( is_array( $final_url ) ) {
			$final_url = $final_url[ array_rand( $final_url ) ];
		}

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

return $url;
	}

/**
	 * Check if the given URL matches any configured "original" URLs for CDN.
	 *
	 * @since 2.1
	 * @access private
	 *
	 * @param string $url URL to test.
	 * @return bool True if URL is one of the originals.
	 */
	private function _is_ori_url( $url ) {
		$url_parsed = wp_parse_url( $url );

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

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

return false;
	}

/**
	 * Check if the host is one of the CDN mapping hosts.
	 *
	 * @since 1.2.3
	 *
	 * @param string $host Hostname to check.
	 * @return bool False when bypassed, otherwise true if internal CDN host.
	 */
	public static function internal( $host ) {
		if ( defined( self::BYPASS ) ) {
			return false;
		}

$instance = self::cls();

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