WIBUHAX0R1337

- WIBUHAX0R1337 -

/home/coludnqa/xtrasolutionsco.com/wp-content/plugins/litespeed-cache/src/ [ Home ]

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<?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 = [];

/**
	 * 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 ];
		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 );

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 ) {
		$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 ) {
			// 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 );

// 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
	}
}

Nama File / Folder	Size	Action
cdn	--	NONE
data_structure	--	NONE
activation.cls.php	17.437KB	Edit File Delete File Rename
admin-display.cls.php	48.119KB	Edit File Delete File Rename
admin-settings.cls.php	11.116KB	Edit File Delete File Rename
admin.cls.php	5.046KB	Edit File Delete File Rename
api.cls.php	10.437KB	Edit File Delete File Rename
avatar.cls.php	8.682KB	Edit File Delete File Rename
base.cls.php	34.58KB	Edit File Delete File Rename
cdn.cls.php	15.918KB	Edit File Delete File Rename
cloud.cls.php	65.796KB	Edit File Delete File Rename
conf.cls.php	19.53KB	Edit File Delete File Rename
control.cls.php	24.349KB	Edit File Delete File Rename
core.cls.php	21.015KB	Edit File Delete File Rename
crawler-map.cls.php	19.428KB	Edit File Delete File Rename
crawler.cls.php	42.195KB	Edit File Delete File Rename
css.cls.php	15.271KB	Edit File Delete File Rename
data.cls.php	16.49KB	Edit File Delete File Rename
data.upgrade.func.php	3.073KB	Edit File Delete File Rename
db-optm.cls.php	10.341KB	Edit File Delete File Rename
debug2.cls.php	14.17KB	Edit File Delete File Rename
doc.cls.php	4.066KB	Edit File Delete File Rename
error.cls.php	7.383KB	Edit File Delete File Rename
esi.cls.php	27.182KB	Edit File Delete File Rename
file.cls.php	10.569KB	Edit File Delete File Rename
gui.cls.php	36.503KB	Edit File Delete File Rename
health.cls.php	2.831KB	Edit File Delete File Rename
htaccess.cls.php	24.002KB	Edit File Delete File Rename
img-optm.cls.php	65.13KB	Edit File Delete File Rename
import.cls.php	4.292KB	Edit File Delete File Rename
import.preset.cls.php	5.501KB	Edit File Delete File Rename
lang.cls.php	15.06KB	Edit File Delete File Rename
localization.cls.php	3.439KB	Edit File Delete File Rename
media.cls.php	40.368KB	Edit File Delete File Rename
metabox.cls.php	5.316KB	Edit File Delete File Rename
object-cache-wp.cls.php	24.667KB	Edit File Delete File Rename
object-cache.cls.php	20.301KB	Edit File Delete File Rename
object.lib.php	13.31KB	Edit File Delete File Rename
optimize.cls.php	38.663KB	Edit File Delete File Rename
optimizer.cls.php	9.414KB	Edit File Delete File Rename
placeholder.cls.php	14.187KB	Edit File Delete File Rename
purge.cls.php	33.95KB	Edit File Delete File Rename
report.cls.php	6.119KB	Edit File Delete File Rename
rest.cls.php	8.637KB	Edit File Delete File Rename
root.cls.php	13.987KB	Edit File Delete File Rename
router.cls.php	20.568KB	Edit File Delete File Rename
str.cls.php	3.15KB	Edit File Delete File Rename
tag.cls.php	9.259KB	Edit File Delete File Rename
task.cls.php	6.132KB	Edit File Delete File Rename
tool.cls.php	4.217KB	Edit File Delete File Rename
ucss.cls.php	14.374KB	Edit File Delete File Rename
utility.cls.php	21.763KB	Edit File Delete File Rename
vary.cls.php	20.201KB	Edit File Delete File Rename
vpi.cls.php	9.363KB	Edit File Delete File Rename