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Editing: media.cls.php
<?php /** * The class to operate media data. * * @package LiteSpeed * @since 1.4 */ namespace LiteSpeed; defined( 'WPINC' ) || exit(); /** * Class Media * * Handles media-related optimizations like lazy loading, next-gen image replacement, and admin UI. */ class Media extends Root { const LOG_TAG = '📺'; const LIB_FILE_IMG_LAZYLOAD = 'assets/js/lazyload.min.js'; const TYPE_BATCH_RESCALE_ORI = 'batch_rescale_ori'; /** * Current page buffer content. * * @var string */ private $content; /** * WordPress uploads directory info. * * @var array */ private $_wp_upload_dir; /** * List of VPI (viewport images) to preload in <head>. * * @var array */ private $_vpi_preload_list = []; /** * The user-level next-gen format supported (''|webp|avif). * * @var string */ private $_format = ''; /** * The system-level chosen next-gen format (webp|avif). * * @var string */ private $_sys_format = ''; /** * Init. * * @since 1.4 */ public function __construct() { self::debug2( 'init' ); $this->_wp_upload_dir = wp_upload_dir(); if ( $this->conf( Base::O_IMG_OPTM_WEBP ) ) { $this->_sys_format = 'webp'; $this->_format = 'webp'; if ( 2 === $this->conf( Base::O_IMG_OPTM_WEBP ) ) { $this->_sys_format = 'avif'; $this->_format = 'avif'; } if ( ! $this->_browser_support_next_gen() ) { $this->_format = ''; } $this->_format = apply_filters( 'litespeed_next_gen_format', $this->_format ); } } /** * Hooks after user init. * * @since 7.2 * @since 7.4 Add media replace original with scaled. * @return void */ public function after_user_init() { // Hook to attachment delete action (PR#844, Issue#841) for AJAX del compatibility. add_action( 'delete_attachment', [ $this, 'delete_attachment' ], 11, 2 ); // For big images, allow to replace original with scaled image. if ( $this->conf( Base::O_MEDIA_AUTO_RESCALE_ORI ) ) { // Added priority 9 to happen before other functions added. add_filter( 'wp_update_attachment_metadata', [ $this, 'rescale_ori' ], 9, 2 ); } } /** * Init optm features. * * @since 3.0 * @access public * @return void */ public function init() { if ( is_admin() ) { return; } // Due to ajax call doesn't send correct accept header, have to limit webp to HTML only. if ( $this->webp_support() ) { // Hook to srcset. if ( function_exists( 'wp_calculate_image_srcset' ) ) { add_filter( 'wp_calculate_image_srcset', [ $this, 'webp_srcset' ], 988 ); } // Hook to mime icon // add_filter( 'wp_get_attachment_image_src', [ $this, 'webp_attach_img_src' ], 988 );// todo: need to check why not // add_filter( 'wp_get_attachment_url', [ $this, 'webp_url' ], 988 ); // disabled to avoid wp-admin display } if ( $this->conf( Base::O_MEDIA_LAZY ) && ! $this->cls( 'Metabox' )->setting( 'litespeed_no_image_lazy' ) ) { self::debug( 'Suppress default WP lazyload' ); add_filter( 'wp_lazy_loading_enabled', '__return_false' ); } /** * Replace gravatar. * * @since 3.0 */ $this->cls( 'Avatar' ); add_filter( 'litespeed_buffer_finalize', [ $this, 'finalize' ], 4 ); add_filter( 'litespeed_optm_html_head', [ $this, 'finalize_head' ] ); } /** * Handle attachment create (rescale original). * * @param array $metadata Current meta array. * @param int $attachment_id Attachment ID. * @return array Modified metadata. * @since 7.4 */ public function rescale_ori( $metadata, $attachment_id ) { // Test if create and image was resized. if ( $metadata && isset( $metadata['original_image'], $metadata['file'] ) && false !== strpos( $metadata['file'], '-scaled' ) ) { // Get rescaled file name. $path_exploded = explode( '/', strrev( $metadata['file'] ), 2 ); $rescaled_file_name = strrev( $path_exploded[0] ); // Create paths for images: resized and original. $base_path = $this->_wp_upload_dir['basedir'] . $this->_wp_upload_dir['subdir'] . '/'; $rescaled_path = $base_path . $rescaled_file_name; $new_path = $base_path . $metadata['original_image']; // Change array file key. $metadata['file'] = $this->_wp_upload_dir['subdir'] . '/' . $metadata['original_image']; if ( 0 === strpos( $metadata['file'], '/' ) ) { $metadata['file'] = substr( $metadata['file'], 1 ); } // Delete array "original_image" key. unset( $metadata['original_image'] ); if ( file_exists( $rescaled_path ) && file_exists( $new_path ) ) { // Move rescaled to original using WP_Filesystem. global $wp_filesystem; if ( ! $wp_filesystem ) { require_once ABSPATH . '/wp-admin/includes/file.php'; \WP_Filesystem(); } if ( $wp_filesystem ) { $wp_filesystem->move( $rescaled_path, $new_path, true ); } // Update meta "_wp_attached_file". update_post_meta( $attachment_id, '_wp_attached_file', $metadata['file'] ); } } return $metadata; } /** * Route media actions. * * @since 7.7 * @return void */ public function handler() { $type = Router::verify_type(); switch ( $type ) { case self::TYPE_BATCH_RESCALE_ORI: $this->_batch_rescale_ori(); break; default: break; } Admin::redirect(); } /** * Batch replace all scaled images with their originals. * * Follows the rm_bkup() pagination pattern. * * @since 7.7 * @access private */ private function _batch_rescale_ori() { global $wpdb; // phpcs:ignore WordPress.Security.NonceVerification.Recommended $offset = ! empty( $_GET['litespeed_i'] ) ? absint( wp_unslash( $_GET['litespeed_i'] ) ) : 0; $limit = 500; $count = 0; $img_q = "SELECT a.ID, b.meta_value FROM `$wpdb->posts` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID WHERE b.meta_key = '_wp_attachment_metadata' AND a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') ORDER BY a.ID LIMIT %d, %d "; // phpcs:ignore WordPress.DB.DirectDatabaseQuery, WordPress.DB.PreparedSQL.NotPrepared $list = $wpdb->get_results( $wpdb->prepare( $img_q, [ $offset * $limit, $limit ] ) ); foreach ( $list as $v ) { if ( ! $v->ID || ! $v->meta_value ) { continue; } // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged $meta_value = @maybe_unserialize( $v->meta_value ); if ( ! is_array( $meta_value ) ) { continue; } if ( empty( $meta_value['original_image'] ) || empty( $meta_value['file'] ) || false === strpos( $meta_value['file'], '-scaled' ) ) { continue; } $attachment_id = $v->ID; // Extract subdirectory from metadata file path (e.g. "2024/05/photo-scaled.jpg" → "2024/05"). $subdir = pathinfo( $meta_value['file'], PATHINFO_DIRNAME ); // Build relative paths for rename(). $scaled_filename = basename( $meta_value['file'] ); $scaled_path = $subdir . '/' . $scaled_filename; $original_path = $subdir . '/' . $meta_value['original_image']; // Verify scaled file exists before proceeding // TODO: need to ues isfile func to allow hook from offload plugins $basedir = $this->_wp_upload_dir['basedir'] . '/'; if ( ! file_exists( $basedir . $scaled_path ) ) { self::debug( 'Skipped: scaled file missing [pid] ' . $attachment_id ); continue; } // Move scaled file → original file using WP_Filesystem via rename(). $this->rename( $scaled_path, $original_path, $attachment_id ); // Update metadata: point file to original, remove original_image key. $meta_value['file'] = $subdir . '/' . $meta_value['original_image']; unset( $meta_value['original_image'] ); wp_update_attachment_metadata( $attachment_id, $meta_value ); update_post_meta( $attachment_id, '_wp_attached_file', $meta_value['file'] ); ++$count; } self::debug( 'batch_rescale_ori offset=' . $offset . ' processed=' . $count ); // Check if there are more rows to process. ++$offset; // phpcs:ignore WordPress.DB.DirectDatabaseQuery, WordPress.DB.PreparedSQL.NotPrepared $to_be_continued = $wpdb->get_row( $wpdb->prepare( $img_q, [ $offset * $limit, 1 ] ) ); if ( $to_be_continued ) { return Router::self_redirect( Router::ACTION_MEDIA, self::TYPE_BATCH_RESCALE_ORI ); } Admin_Display::success( sprintf( __( 'Batch rescale completed.', 'litespeed-cache' ) ) ); } /** * Add featured image and VPI preloads to head. * * @param string $content Current head HTML. * @return string Modified head HTML. */ public function finalize_head( $content ) { // <link rel="preload" as="image" href="xx"> if ( $this->_vpi_preload_list ) { foreach ( $this->_vpi_preload_list as $v ) { $content .= '<link rel="preload" as="image" href="' . esc_url( Str::trim_quotes( $v ) ) . '">'; } } return $content; } /** * Adjust WP default JPG quality. * * @since 3.0 * @access public * * @param int $quality Current quality. * @return int Adjusted quality. */ public function adjust_jpg_quality( $quality ) { $v = $this->conf( Base::O_IMG_OPTM_JPG_QUALITY ); if ( $v ) { return $v; } return $quality; } /** * Register admin menu. * * @since 1.6.3 * @access public * @return void */ public function after_admin_init() { /** * JPG quality control. * * @since 3.0 */ add_filter( 'jpeg_quality', [ $this, 'adjust_jpg_quality' ] ); add_filter( 'manage_media_columns', [ $this, 'media_row_title' ] ); add_filter( 'manage_media_custom_column', [ $this, 'media_row_actions' ], 10, 2 ); add_action( 'litespeed_media_row', [ $this, 'media_row_con' ] ); } /** * Media delete action hook. * * @since 2.4.3 * @access public * * @param int $post_id Post ID. * @return void */ public static function delete_attachment( $post_id ) { self::debug( 'delete_attachment [pid] ' . $post_id ); Img_Optm::cls()->reset_row( $post_id ); } /** * Return media file info if exists. * * This is for remote attachment plugins. * * @since 2.9.8 * @access public * * @param string $short_file_path Relative file path under uploads. * @param int $post_id Post ID. * @return array|false Array( url, md5, size ) or false. */ public function info( $short_file_path, $post_id ) { $short_file_path = wp_normalize_path( $short_file_path ); $basedir = $this->_wp_upload_dir['basedir'] . '/'; if ( 0 === strpos( $short_file_path, $basedir ) ) { $short_file_path = substr( $short_file_path, strlen( $basedir ) ); } $real_file = $basedir . $short_file_path; if ( file_exists( $real_file ) ) { return [ 'url' => $this->_wp_upload_dir['baseurl'] . '/' . $short_file_path, 'md5' => md5_file( $real_file ), 'size' => filesize( $real_file ), ]; } /** * WP Stateless compatibility #143 https://github.com/litespeedtech/lscache_wp/issues/143 * * @since 2.9.8 * Should return array( 'url', 'md5', 'size' ). */ $info = apply_filters( 'litespeed_media_info', [], $short_file_path, $post_id ); if ( ! empty( $info['url'] ) && ! empty( $info['md5'] ) && ! empty( $info['size'] ) ) { return $info; } return false; } /** * Delete media file. * * @since 2.9.8 * @access public * * @param string $short_file_path Relative file path under uploads. * @param int $post_id Post ID. * @return void */ public function del( $short_file_path, $post_id ) { $real_file = $this->_wp_upload_dir['basedir'] . '/' . $short_file_path; if ( file_exists( $real_file ) ) { wp_delete_file( $real_file ); self::debug( 'deleted ' . $real_file ); } do_action( 'litespeed_media_del', $short_file_path, $post_id ); } /** * Rename media file. * * @since 2.9.8 * @access public * * @param string $short_file_path Old relative path. * @param string $short_file_path_new New relative path. * @param int $post_id Post ID. * @return void */ public function rename( $short_file_path, $short_file_path_new, $post_id ) { $real_file = $this->_wp_upload_dir['basedir'] . '/' . $short_file_path; $real_file_new = $this->_wp_upload_dir['basedir'] . '/' . $short_file_path_new; if ( file_exists( $real_file ) ) { global $wp_filesystem; if ( ! $wp_filesystem ) { require_once ABSPATH . '/wp-admin/includes/file.php'; \WP_Filesystem(); } if ( $wp_filesystem ) { $wp_filesystem->move( $real_file, $real_file_new, true ); } self::debug( 'renamed ' . $real_file . ' to ' . $real_file_new ); } do_action( 'litespeed_media_rename', $short_file_path, $short_file_path_new, $post_id ); } /** * Media Admin Menu -> Image Optimization Column Title. * * @since 1.6.3 * @access public * * @param array $posts_columns Existing columns. * @return array Modified columns. */ public function media_row_title( $posts_columns ) { $posts_columns['imgoptm'] = esc_html__( 'LiteSpeed Optimization', 'litespeed-cache' ); return $posts_columns; } /** * Media Admin Menu -> Image Optimization Column. * * @since 1.6.2 * @access public * * @param string $column_name Current column name. * @param int $post_id Post ID. * @return void */ public function media_row_actions( $column_name, $post_id ) { if ( 'imgoptm' !== $column_name ) { return; } do_action( 'litespeed_media_row', $post_id ); } /** * Display image optimization info in the media list row. * * @since 3.0 * * @param int $post_id Attachment post ID. * @return void */ public function media_row_con( $post_id ) { $att_info = wp_get_attachment_metadata( $post_id ); if ( empty( $att_info['file'] ) ) { return; } $short_path = $att_info['file']; $size_meta = get_post_meta( $post_id, Img_Optm::DB_SIZE, true ); echo '<p>'; // Original image info. if ( $size_meta && ! empty( $size_meta['ori_saved'] ) ) { $percent = (int) ceil( ( (int) $size_meta['ori_saved'] * 100 ) / max( 1, (int) $size_meta['ori_total'] ) ); $extension = pathinfo( $short_path, PATHINFO_EXTENSION ); $bk_file = substr( $short_path, 0, -strlen( $extension ) ) . 'bk.' . $extension; $bk_optm_file = substr( $short_path, 0, -strlen( $extension ) ) . 'bk.optm.' . $extension; $link = Utility::build_url( Router::ACTION_IMG_OPTM, 'orig' . $post_id ); $desc = false; $cls = ''; if ( $this->info( $bk_file, $post_id ) ) { $curr_status = esc_html__( '(optm)', 'litespeed-cache' ); $desc = esc_attr__( 'Currently using optimized version of file.', 'litespeed-cache' ) . ' ' . esc_attr__( 'Click to switch to original (unoptimized) version.', 'litespeed-cache' ); } elseif ( $this->info( $bk_optm_file, $post_id ) ) { $cls .= ' litespeed-warning'; $curr_status = esc_html__( '(non-optm)', 'litespeed-cache' ); $desc = esc_attr__( 'Currently using original (unoptimized) version of file.', 'litespeed-cache' ) . ' ' . esc_attr__( 'Click to switch to optimized version.', 'litespeed-cache' ); } echo wp_kses( GUI::pie_tiny( $percent, 24, sprintf( esc_html__( 'Original file reduced by %1$s (%2$s)', 'litespeed-cache' ), $percent . '%', Utility::real_size( $size_meta['ori_saved'] ) ), 'left' ), GUI::allowed_svg_tags() ); printf( esc_html__( 'Orig saved %s', 'litespeed-cache' ), (int) $percent . '%' ); if ( $desc ) { printf( ' <a href="%1$s" class="litespeed-media-href %2$s" data-balloon-pos="left" data-balloon-break aria-label="%3$s">%4$s</a>', esc_url( $link ), esc_attr( $cls ), wp_kses_post( $desc ), esc_html( $curr_status ) ); } else { printf( ' <span class="litespeed-desc" data-balloon-pos="left" data-balloon-break aria-label="%1$s">%2$s</span>', esc_attr__( 'Using optimized version of file. ', 'litespeed-cache' ) . ' ' . esc_attr__( 'No backup of original file exists.', 'litespeed-cache' ), esc_html__( '(optm)', 'litespeed-cache' ) ); } } elseif ( $size_meta && 0 === (int) $size_meta['ori_saved'] ) { echo wp_kses( GUI::pie_tiny( 0, 24, esc_html__( 'Congratulation! Your file was already optimized', 'litespeed-cache' ), 'left' ), GUI::allowed_svg_tags() ); printf( esc_html__( 'Orig %s', 'litespeed-cache' ), '<span class="litespeed-desc">' . esc_html__( '(no savings)', 'litespeed-cache' ) . '</span>' ); } else { echo esc_html__( 'Orig', 'litespeed-cache' ) . '<span class="litespeed-left10">—</span>'; } echo '</p>'; echo '<p>'; // WebP/AVIF info. if ( $size_meta && $this->webp_support( true ) && ! empty( $size_meta[ $this->_sys_format . '_saved' ] ) ) { $is_avif = 'avif' === $this->_sys_format; $size_meta_saved = $size_meta[ $this->_sys_format . '_saved' ]; $size_meta_total = $size_meta[ $this->_sys_format . '_total' ]; $percent = ceil( ( $size_meta_saved * 100 ) / max( 1, $size_meta_total ) ); $link = Utility::build_url( Router::ACTION_IMG_OPTM, $this->_sys_format . $post_id ); $desc = false; $cls = ''; if ( $this->info( $short_path . '.' . $this->_sys_format, $post_id ) ) { $curr_status = esc_html__( '(optm)', 'litespeed-cache' ); $desc = $is_avif ? esc_attr__( 'Currently using optimized version of AVIF file.', 'litespeed-cache' ) : esc_attr__( 'Currently using optimized version of WebP file.', 'litespeed-cache' ); $desc .= ' ' . esc_attr__( 'Click to switch to original (unoptimized) version.', 'litespeed-cache' ); } elseif ( $this->info( $short_path . '.optm.' . $this->_sys_format, $post_id ) ) { $cls .= ' litespeed-warning'; $curr_status = esc_html__( '(non-optm)', 'litespeed-cache' ); $desc = $is_avif ? esc_attr__( 'Currently using original (unoptimized) version of AVIF file.', 'litespeed-cache' ) : esc_attr__( 'Currently using original (unoptimized) version of WebP file.', 'litespeed-cache' ); $desc .= ' ' . esc_attr__( 'Click to switch to optimized version.', 'litespeed-cache' ); } echo wp_kses( GUI::pie_tiny( $percent, 24, sprintf( $is_avif ? esc_html__( 'AVIF file reduced by %1$s (%2$s)', 'litespeed-cache' ) : esc_html__( 'WebP file reduced by %1$s (%2$s)', 'litespeed-cache' ), $percent . '%', Utility::real_size( $size_meta_saved ) ), 'left' ), GUI::allowed_svg_tags() ); printf( $is_avif ? esc_html__( 'AVIF saved %s', 'litespeed-cache' ) : esc_html__( 'WebP saved %s', 'litespeed-cache' ), '<span>' . esc_html( $percent ) . '%</span>' ); if ( $desc ) { printf( ' <a href="%1$s" class="litespeed-media-href %2$s" data-balloon-pos="left" data-balloon-break aria-label="%3$s">%4$s</a>', esc_url( $link ), esc_attr( $cls ), wp_kses_post( $desc ), esc_html( $curr_status ) ); } else { printf( ' <span class="litespeed-desc" data-balloon-pos="left" data-balloon-break aria-label="%1$s %2$s">%3$s</span>', esc_attr__( 'Using optimized version of file. ', 'litespeed-cache' ), $is_avif ? esc_attr__( 'No backup of unoptimized AVIF file exists.', 'litespeed-cache' ) : esc_attr__( 'No backup of unoptimized WebP file exists.', 'litespeed-cache' ), esc_html__( '(optm)', 'litespeed-cache' ) ); } } else { echo esc_html( $this->next_gen_image_title() ) . '<span class="litespeed-left10">—</span>'; } echo '</p>'; // Delete row btn. if ( $size_meta ) { printf( '<div class="row-actions"><span class="delete"><a href="%1$s" class="">%2$s</a></span></div>', esc_url( Utility::build_url( Router::ACTION_IMG_OPTM, Img_Optm::TYPE_RESET_ROW, false, null, [ 'id' => $post_id ] ) ), esc_html__( 'Restore from backup', 'litespeed-cache' ) ); echo '</div>'; } } /** * Get wp size info. * * NOTE: this is not used because it has to be after admin_init. * * @since 1.6.2 * @return array $sizes Data for all currently-registered image sizes. */ public function get_image_sizes() { global $_wp_additional_image_sizes; $sizes = []; foreach ( get_intermediate_image_sizes() as $_size ) { if ( in_array( $_size, [ 'thumbnail', 'medium', 'medium_large', 'large' ], true ) ) { $sizes[ $_size ]['width'] = get_option( $_size . '_size_w' ); $sizes[ $_size ]['height'] = get_option( $_size . '_size_h' ); $sizes[ $_size ]['crop'] = (bool) get_option( $_size . '_crop' ); } elseif ( isset( $_wp_additional_image_sizes[ $_size ] ) ) { $sizes[ $_size ] = [ 'width' => $_wp_additional_image_sizes[ $_size ]['width'], 'height' => $_wp_additional_image_sizes[ $_size ]['height'], 'crop' => $_wp_additional_image_sizes[ $_size ]['crop'], ]; } } return $sizes; } /** * Exclude role from optimization filter. * * @since 1.6.2 * @access public * * @param bool $sys_level Return system-level format if true. * @return string Next-gen format name or empty string. */ public function webp_support( $sys_level = false ) { if ( $sys_level ) { return $this->_sys_format; } return $this->_format; // User level next gen support. } /** * Detect if browser supports next-gen format. * * @return bool */ private function _browser_support_next_gen() { $accept = isset( $_SERVER['HTTP_ACCEPT'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_ACCEPT'] ) ) : ''; if ( $accept ) { if ( false !== strpos( $accept, 'image/' . $this->_sys_format ) ) { return true; } } $ua = isset( $_SERVER['HTTP_USER_AGENT'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) ) : ''; if ( $ua ) { $user_agents = [ 'chrome-lighthouse', 'googlebot', 'page speed' ]; foreach ( $user_agents as $user_agent ) { if ( false !== stripos( $ua, $user_agent ) ) { return true; } } if ( preg_match( '/iPhone OS (\d+)_/i', $ua, $matches ) ) { if ( $matches[1] >= 14 ) { return true; } } if ( preg_match( '/Macintosh.+Version\/([0-9.]+)/i', $ua, $matches ) ) { if ( version_compare( $matches[1], '16.4', '>=' ) ) { return true; } } if ( preg_match( '/Firefox\/(\d+)/i', $ua, $matches ) ) { if ( $matches[1] >= 65 ) { return true; } } } return false; } /** * Get next gen image title. * * @since 7.0 * @return string */ public function next_gen_image_title() { $next_gen_img = 'WebP'; if ( 2 === $this->conf( Base::O_IMG_OPTM_WEBP ) ) { $next_gen_img = 'AVIF'; } return $next_gen_img; } /** * Run lazy load process. * NOTE: As this is after cache finalized, can NOT set any cache control anymore. * * Only do for main page. Do NOT do for esi or dynamic content. * * @since 1.4 * @access public * * @param string $content Final buffer. * @return string The buffer. */ public function finalize( $content ) { if ( defined( 'LITESPEED_NO_LAZY' ) ) { self::debug2( 'bypass: NO_LAZY const' ); return $content; } if ( ! defined( 'LITESPEED_IS_HTML' ) ) { self::debug2( 'bypass: Not frontend HTML type' ); return $content; } if ( ! Control::is_cacheable() ) { self::debug( 'bypass: Not cacheable' ); return $content; } self::debug( 'finalize' ); $this->content = $content; $this->_finalize(); return $this->content; } /** * Run lazyload replacement for images in buffer. * * @since 1.4 * @access private * @return void */ private function _finalize() { /** * Use webp for optimized images. * * @since 1.6.2 */ if ( $this->webp_support() ) { $this->content = $this->_replace_buffer_img_webp( $this->content ); } /** * Check if URI is excluded. * * @since 3.0 */ $excludes = $this->conf( Base::O_MEDIA_LAZY_URI_EXC ); if ( ! defined( 'LITESPEED_GUEST_OPTM' ) ) { $request_uri = isset( $_SERVER['REQUEST_URI'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : ''; $result = $request_uri ? Utility::str_hit_array( $request_uri, $excludes ) : false; if ( $result ) { self::debug( 'bypass lazyload: hit URI Excludes setting: ' . $result ); return; } } $cfg_lazy = ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_MEDIA_LAZY ) ) && ! $this->cls( 'Metabox' )->setting( 'litespeed_no_image_lazy' ); $cfg_iframe_lazy = defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_MEDIA_IFRAME_LAZY ); $cfg_js_delay = defined( 'LITESPEED_GUEST_OPTM' ) || 2 === $this->conf( Base::O_OPTM_JS_DEFER ); $cfg_trim_noscript = defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_OPTM_NOSCRIPT_RM ); $cfg_vpi = defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_MEDIA_VPI ); // Preload VPI. if ( $cfg_vpi ) { $this->_parse_img_for_preload(); } if ( $cfg_lazy ) { if ( $cfg_vpi ) { add_filter( 'litespeed_media_lazy_img_excludes', [ $this->cls( 'Metabox' ), 'lazy_img_excludes' ] ); } list( $src_list, $html_list, $placeholder_list ) = $this->_parse_img(); $html_list_ori = $html_list; } else { self::debug( 'lazyload disabled' ); } // image lazy load. if ( $cfg_lazy ) { $__placeholder = Placeholder::cls(); foreach ( $html_list as $k => $v ) { $size = $placeholder_list[ $k ]; $src = $src_list[ $k ]; $html_list[ $k ] = $__placeholder->replace( $v, $src, $size ); } } if ( $cfg_lazy ) { $this->content = str_replace( $html_list_ori, $html_list, $this->content ); } // iframe lazy load. if ( $cfg_iframe_lazy ) { $html_list = $this->_parse_iframe(); $html_list_ori = $html_list; foreach ( $html_list as $k => $v ) { $snippet = $cfg_trim_noscript ? '' : '<noscript>' . $v . '</noscript>'; if ( $cfg_js_delay ) { $v = str_replace( ' src=', ' data-litespeed-src=', $v ); } else { $v = str_replace( ' src=', ' data-src=', $v ); } $v = str_replace( '<iframe ', '<iframe data-lazyloaded="1" src="about:blank" ', $v ); $snippet = $v . $snippet; $html_list[ $k ] = $snippet; } $this->content = str_replace( $html_list_ori, $html_list, $this->content ); } // Include lazyload lib js and init lazyload. if ( $cfg_lazy || $cfg_iframe_lazy ) { $lazy_lib = '<script data-no-optimize="1">window.lazyLoadOptions=Object.assign({},{threshold:' . apply_filters( 'litespeed_lazyload_threshold', 300 ) . '},window.lazyLoadOptions||{});' . File::read( LSCWP_DIR . self::LIB_FILE_IMG_LAZYLOAD ) . '</script>'; if ( $cfg_js_delay ) { // Load JS delay lib. if ( ! defined( 'LITESPEED_JS_DELAY_LIB_LOADED' ) ) { define( 'LITESPEED_JS_DELAY_LIB_LOADED', true ); $lazy_lib .= '<script data-no-optimize="1">' . File::read( LSCWP_DIR . Optimize::LIB_FILE_JS_DELAY ) . '</script>'; } } $this->content = str_replace( '</body>', $lazy_lib . '</body>', $this->content ); } } /** * Parse img src for VPI preload only. * Note: Didn't reuse the _parse_img() because it contains replacement logic which is not needed for preload. * * @since 6.2 * @since 7.6 - Added attributes fetchpriority="high" and decode="sync" for VPI images. * @return void */ private function _parse_img_for_preload() { // Load VPI setting. $is_mobile = $this->_separate_mobile(); $vpi_files = $this->cls( 'Metabox' )->setting( $is_mobile ? VPI::POST_META_MOBILE : VPI::POST_META ); if ( $vpi_files ) { $vpi_files = Utility::sanitize_lines( $vpi_files, 'basename' ); } if ( ! $vpi_files ) { return; } if ( ! $this->content ) { return; } $content = preg_replace( [ '#<!--.*-->#sU', '#<noscript([^>]*)>.*</noscript>#isU' ], '', $this->content ); if ( ! $content ) { return; } $vpi_fp_search = []; $vpi_fp_replace = []; preg_match_all('#<img\s+([^>]+)/?>#isU', $content, $matches, PREG_SET_ORDER); foreach ($matches as $match) { $attrs = Utility::parse_attr($match[1]); if ( empty( $attrs['src'] ) ) { continue; } if ( false !== strpos( $attrs['src'], 'base64' ) || 0 === strpos( $attrs['src'], 'data:' ) ) { self::debug2( 'lazyload bypassed base64 img' ); continue; } if ( false !== strpos( $attrs['src'], '{' ) ) { self::debug2( 'image src has {} ' . $attrs['src'] ); continue; } // If the src contains VPI filename, then preload it. if ( ! Utility::str_hit_array( $attrs['src'], $vpi_files ) ) { continue; } self::debug2( 'VPI preload found and matched: ' . $attrs['src'] ); $this->_vpi_preload_list[] = $attrs['src']; // Add attributes fetchpriority="high" and decode="sync" // after WP 6.3.0 use: wp_img_tag_add_loading_optimization_attrs(). $new_html = []; $attrs[ 'fetchpriority' ] = 'high'; $attrs[ 'decoding' ] = 'sync'; // create html with new attributes. foreach ( $attrs as $k => $attr ) { $new_html[] = $k . '="' . $attr . '"'; } if ( $new_html ) { $vpi_fp_search[] = $match[1]; $vpi_fp_replace[] = implode( ' ', $new_html); } } // if VPI fetchpriority changes, do the replacement if ( $vpi_fp_search && $vpi_fp_replace ) { $this->content = str_replace( $vpi_fp_search, $vpi_fp_replace, $this->content ); } unset( $vpi_fp_search ); unset( $vpi_fp_replace ); } /** * Parse img src. * * @since 1.4 * @access private * @return array{0:array,1:array,2:array} All the src & related raw html list with placeholders. */ private function _parse_img() { /** * Exclude list. * * @since 1.5 * @since 2.7.1 Changed to array. */ $excludes = apply_filters( 'litespeed_media_lazy_img_excludes', $this->conf( Base::O_MEDIA_LAZY_EXC ) ); $cls_excludes = apply_filters( 'litespeed_media_lazy_img_cls_excludes', $this->conf( Base::O_MEDIA_LAZY_CLS_EXC ) ); $cls_excludes[] = 'skip-lazy'; // https://core.trac.wordpress.org/ticket/44427 $src_list = []; $html_list = []; $placeholder_list = []; $content = preg_replace( [ '#<!--.*-->#sU', '#<noscript([^>]*)>.*</noscript>#isU', '#<script([^>]*)>.*</script>#isU', // Remove script to avoid false matches and warnings, when image size detection is turned ON. ], '', $this->content ); /** * Exclude parent classes. * * @since 3.0 */ $parent_cls_exc = apply_filters( 'litespeed_media_lazy_img_parent_cls_excludes', $this->conf( Base::O_MEDIA_LAZY_PARENT_CLS_EXC ) ); if ( $parent_cls_exc ) { self::debug2( 'Lazyload Class excludes', $parent_cls_exc ); foreach ( $parent_cls_exc as $v ) { $content = preg_replace('#<(\w+) [^>]*class=(\'|")[^\'"]*' . preg_quote($v, '#') . '[^\'"]*\2[^>]*>.*</\1>#sU', '', $content); } } $add_missing_sizes = ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_MEDIA_ADD_MISSING_SIZES ) ) && apply_filters( 'litespeed_media_add_missing_sizes', true ); preg_match_all( '#<img\s+([^>]+)/?>#isU', $content, $matches, PREG_SET_ORDER ); foreach ( $matches as $match ) { $attrs = Utility::parse_attr( $match[1] ); if ( empty( $attrs['src'] ) ) { continue; } /** * Add src validation to bypass base64 img src. * * @since 1.6 */ if ( false !== strpos( $attrs['src'], 'base64' ) || 0 === strpos( $attrs['src'], 'data:' ) ) { self::debug2( 'lazyload bypassed base64 img' ); continue; } self::debug2( 'lazyload found: ' . $attrs['src'] ); if ( ! empty( $attrs['data-no-lazy'] ) || ! empty( $attrs['data-skip-lazy'] ) || ! empty( $attrs['data-lazyloaded'] ) || ! empty( $attrs['data-src'] ) || ! empty( $attrs['data-srcset'] ) ) { self::debug2( 'bypassed' ); continue; } $hit = ! empty( $attrs['class'] ) ? Utility::str_hit_array( $attrs['class'], $cls_excludes ) : false; if ( $hit ) { self::debug2( 'lazyload image cls excludes [hit] ' . $hit ); continue; } /** * Exclude from lazyload by setting. * * @since 1.5 */ if ( $excludes && Utility::str_hit_array( $attrs['src'], $excludes ) ) { self::debug2( 'lazyload image exclude ' . $attrs['src'] ); continue; } /** * Excludes invalid image src from buddypress avatar crop. * * @see https://wordpress.org/support/topic/lazy-load-breaking-buddypress-upload-avatar-feature * @since 3.0 */ if ( false !== strpos( $attrs['src'], '{' ) ) { self::debug2( 'image src has {} ' . $attrs['src'] ); continue; } // to avoid multiple replacement. if ( in_array( $match[0], $html_list, true ) ) { continue; } // Add missing dimensions. if ( $add_missing_sizes ) { if ( empty( $attrs['width'] ) || 'auto' === $attrs['width'] || empty( $attrs['height'] ) || 'auto' === $attrs['height'] ) { self::debug( '⚠️ Missing sizes for image [src] ' . $attrs['src'] ); $dimensions = $this->_detect_dimensions( $attrs['src'] ); if ( $dimensions ) { $ori_width = $dimensions[0]; $ori_height = $dimensions[1]; // Calculate height based on width. if ( ! empty( $attrs['width'] ) && 'auto' !== $attrs['width'] ) { $ori_height = (int) ( ( $ori_height * (int) $attrs['width'] ) / max( 1, $ori_width ) ); } elseif ( ! empty( $attrs['height'] ) && 'auto' !== $attrs['height'] ) { $ori_width = (int) ( ( $ori_width * (int) $attrs['height'] ) / max( 1, $ori_height ) ); } // Remove existing width/height, then append new values $inner = Utility::remove_attr( $match[1], 'width' ); $inner = Utility::remove_attr( $inner, 'height' ); $new_html = '<img ' . $inner . ' width="' . (int) $ori_width . '" height="' . (int) $ori_height . '" />'; self::debug( 'Add missing sizes ' . $ori_width . 'x' . $ori_height . ' to ' . $attrs['src'] ); $this->content = str_replace( $match[0], $new_html, $this->content ); $match[0] = $new_html; $attrs['width'] = $ori_width; $attrs['height'] = $ori_height; } } } $placeholder = false; if ( ! empty( $attrs['width'] ) && 'auto' !== $attrs['width'] && ! empty( $attrs['height'] ) && 'auto' !== $attrs['height'] ) { $placeholder = (int) $attrs['width'] . 'x' . (int) $attrs['height']; } $src_list[] = $attrs['src']; $html_list[] = $match[0]; $placeholder_list[] = $placeholder; } return [ $src_list, $html_list, $placeholder_list ]; } /** * Detect the original sizes. * * @since 4.0 * * @param string $src Source URL/path. * @return array|false getimagesize array or false. */ private function _detect_dimensions( $src ) { $pathinfo = Utility::is_internal_file( $src ); if ( $pathinfo ) { $src = $pathinfo[0]; } elseif ( apply_filters( 'litespeed_media_ignore_remote_missing_sizes', false ) ) { return false; } if ( 0 === strpos( $src, '//' ) ) { $src = 'https:' . $src; } try { $sizes = getimagesize( $src ); } catch ( \Exception $e ) { return false; } if ( ! empty( $sizes[0] ) && ! empty( $sizes[1] ) ) { return $sizes; } return false; } /** * Parse iframe src. * * @since 1.4 * @access private * @return array All the related raw html list (full <iframe> tags). */ private function _parse_iframe() { $cls_excludes = apply_filters( 'litespeed_media_iframe_lazy_cls_excludes', $this->conf( Base::O_MEDIA_IFRAME_LAZY_CLS_EXC ) ); $cls_excludes[] = 'skip-lazy'; // https://core.trac.wordpress.org/ticket/44427 $html_list = []; $content = preg_replace( '#<!--.*-->#sU', '', $this->content ); /** * Exclude parent classes. * * @since 3.0 */ $parent_cls_exc = apply_filters( 'litespeed_media_iframe_lazy_parent_cls_excludes', $this->conf( Base::O_MEDIA_IFRAME_LAZY_PARENT_CLS_EXC ) ); if ( $parent_cls_exc ) { self::debug2( 'Iframe Lazyload Class excludes', $parent_cls_exc ); foreach ( $parent_cls_exc as $v ) { $content = preg_replace('#<(\w+) [^>]*class=(\'|")[^\'"]*' . preg_quote($v, '#') . '[^\'"]*\2[^>]*>.*</\1>#sU', '', $content); } } preg_match_all( '#<iframe \s*([^>]+)></iframe>#isU', $content, $matches, PREG_SET_ORDER ); foreach ( $matches as $match ) { $attrs = Utility::parse_attr( $match[1] ); if ( empty( $attrs['src'] ) ) { continue; } self::debug2( 'found iframe: ' . $attrs['src'] ); if ( ! empty( $attrs['data-no-lazy'] ) || ! empty( $attrs['data-skip-lazy'] ) || ! empty( $attrs['data-lazyloaded'] ) || ! empty( $attrs['data-src'] ) ) { self::debug2( 'bypassed' ); continue; } $hit = ! empty( $attrs['class'] ) ? Utility::str_hit_array( $attrs['class'], $cls_excludes ) : false; if ( $hit ) { self::debug2( 'iframe lazyload cls excludes [hit] ' . $hit ); continue; } if ( apply_filters( 'litespeed_iframe_lazyload_exc', false, $attrs['src'] ) ) { self::debug2( 'bypassed by filter' ); continue; } // to avoid multiple replacement. if ( in_array( $match[0], $html_list, true ) ) { continue; } $html_list[] = $match[0]; } return $html_list; } /** * Replace image src to webp/avif in buffer. * * @since 1.6.2 * @access private * * @param string $content HTML content. * @return string Modified content. */ private function _replace_buffer_img_webp( $content ) { /** * Added custom element & attribute support. * * @since 2.2.2 */ $webp_ele_to_check = $this->conf( Base::O_IMG_OPTM_WEBP_ATTR ); foreach ( $webp_ele_to_check as $v ) { if ( ! $v || false === strpos( $v, '.' ) ) { self::debug2( 'buffer_webp no . attribute ' . $v ); continue; } self::debug2( 'buffer_webp attribute ' . $v ); $v = explode( '.', $v ); $attr = preg_quote( $v[1], '#' ); if ( $v[0] ) { $pattern = '#<' . preg_quote( $v[0], '#' ) . '([^>]+)' . $attr . '=([\'"])(.+)\2#iU'; } else { $pattern = '# ' . $attr . '=([\'"])(.+)\1#iU'; } preg_match_all( $pattern, $content, $matches ); foreach ( $matches[ $v[0] ? 3 : 2 ] as $k2 => $url ) { // Check if is a DATA-URI. if ( false !== strpos( $url, 'data:image' ) ) { continue; } $url2 = $this->replace_webp( $url ); if ( ! $url2 ) { continue; } if ( $v[0] ) { $html_snippet = sprintf( '<' . $v[0] . '%1$s' . $v[1] . '=%2$s', $matches[1][ $k2 ], $matches[2][ $k2 ] . $url2 . $matches[2][ $k2 ] ); } else { $html_snippet = sprintf( ' ' . $v[1] . '=%1$s', $matches[1][ $k2 ] . $url2 . $matches[1][ $k2 ] ); } $content = str_replace( $matches[0][ $k2 ], $html_snippet, $content ); } } // parse srcset. // todo: should apply this to cdn too. if ( ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_IMG_OPTM_WEBP_REPLACE_SRCSET ) ) && $this->webp_support() ) { $content = Utility::srcset_replace( $content, [ $this, 'replace_webp' ] ); } // Replace background-image. if ( ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_IMG_OPTM_WEBP ) ) && $this->webp_support() ) { $content = $this->replace_background_webp( $content ); } return $content; } /** * Replace background image in inline styles and JSON blobs. * * @since 4.0 * * @param string $content HTML content. * @return string Modified content. */ public function replace_background_webp( $content ) { self::debug2( 'Start replacing background WebP/AVIF.' ); // Handle Elementor's data-settings JSON encoded background-images. $content = $this->replace_urls_in_json( $content ); preg_match_all( '#url\(([^)]+)\)#iU', $content, $matches ); foreach ( $matches[1] as $k => $url ) { // Check if is a DATA-URI. if ( false !== strpos( $url, 'data:image' ) ) { continue; } /** * Support quotes in src `background-image: url('src')`. * * @since 2.9.3 */ $url = trim( $url, '\'"' ); // Fix Elementor's Slideshow unusual background images like style="background-image: url("https://xxxx.png");" if ( 0 === strpos( $url, '"' ) && '"' === substr( $url, -6 ) ) { $url = substr( $url, 6, -6 ); } $url2 = $this->replace_webp( $url ); if ( ! $url2 ) { continue; } $html_snippet = str_replace( $url, $url2, $matches[0][ $k ] ); $content = str_replace( $matches[0][ $k ], $html_snippet, $content ); } return $content; } /** * Replace images in json data settings attributes. * * @since 6.2 * * @param string $content HTML content to scan and modify. * @return string Modified content with replaced URLs inside JSON attributes. */ public function replace_urls_in_json( $content ) { $pattern = '/data-settings="(.*?)"/i'; $parent_class = $this; preg_match_all( $pattern, $content, $matches, PREG_SET_ORDER ); foreach ( $matches as $match ) { // Check if the string contains HTML entities. $is_encoded = preg_match( '/"|<|>|&|'/', $match[1] ); // Decode HTML entities in the JSON string. $json_string = html_entity_decode( $match[1] ); $json_data = \json_decode( $json_string, true ); if ( JSON_ERROR_NONE === json_last_error() && is_array( $json_data ) ) { $did_webp_replace = false; array_walk_recursive( $json_data, /** * Replace URLs in JSON data recursively. * * @param mixed $item Value (modified in place). * @param string $key Array key. */ function ( &$item, $key ) use ( &$did_webp_replace, $parent_class ) { if ( 'url' === $key ) { $item_image = $parent_class->replace_webp( $item ); if ( $item_image ) { $item = $item_image; $did_webp_replace = true; } } } ); if ( $did_webp_replace ) { // Re-encode the modified array back to a JSON string. $new_json_string = wp_json_encode( $json_data ); // Re-encode the JSON string to HTML entities only if it was originally encoded. if ( $is_encoded ) { $new_json_string = htmlspecialchars( $new_json_string, ENT_QUOTES | 0 ); // ENT_HTML401 for PHP>=5.4. } // Replace the old JSON string in the content with the new, modified JSON string. $content = str_replace( $match[1], $new_json_string, $content ); } } } return $content; } /** * Replace internal image src to webp or avif. * * @since 1.6.2 * @access public * * @param string $url Image URL. * @return string|false Replaced URL or false if not applicable. */ public function replace_webp( $url ) { if ( ! $this->webp_support() ) { self::debug2( 'No next generation format chosen in setting, bypassed' ); return false; } // Parse extension from URL path. $url_path = wp_parse_url( $url, PHP_URL_PATH ); $postfix = $url_path ? strtolower( pathinfo( $url_path, PATHINFO_EXTENSION ) ) : ''; // Only process image formats that can be converted to WebP/AVIF. if ( ! in_array( $postfix, [ 'jpg', 'jpeg', 'png', 'gif' ], true ) ) { self::debug2( 'not convertible format, bypassed' ); return false; } self::debug2( $this->_sys_format . ' replacing: ' . substr( $url, 0, 200 ) . ' [.' . $postfix . ']' ); /** * WebP/AVIF API hook. * NOTE: As $url may contain query strings, check filters which may parse_url before appending format. * * @since 2.9.5 * @see #751737 - API docs for WebP generation */ $ori_check = apply_filters( 'litespeed_media_check_ori', Utility::is_internal_file( $url ), $url ); if ( $ori_check ) { // check if has webp/avif file. $has_next = apply_filters( 'litespeed_media_check_webp', Utility::is_internal_file( $url, $this->_sys_format ), $url ); if ( $has_next ) { $url .= '.' . $this->_sys_format; } else { self::debug2( '-no WebP or AVIF file, bypassed' ); return false; } } else { self::debug2( '-no file, bypassed' ); return false; } self::debug2( '- replaced to: ' . $url ); return $url; } /** * Hook to wp_get_attachment_image_src. * * @since 1.6.2 * @access public * * @param array $img The URL, width, height array. * @return array */ public function webp_attach_img_src( $img ) { self::debug2( 'changing attach src: ' . $img[0] ); $url = $img ? $this->replace_webp( $img[0] ) : false; if ( $url ) { $img[0] = $url; } return $img; } /** * Try to replace img url. * * @since 1.6.2 * @access public * * @param string $url Image URL. * @return string */ public function webp_url( $url ) { $url2 = $url ? $this->replace_webp( $url ) : false; if ( $url2 ) { $url = $url2; } return $url; } /** * Hook to replace WP responsive images. * * @since 1.6.2 * @access public * * @param array $srcs Srcset array. * @return array */ public function webp_srcset( $srcs ) { if ( $srcs ) { foreach ( $srcs as $w => $data ) { $url = $this->replace_webp( $data['url'] ); if ( ! $url ) { continue; } $srcs[ $w ]['url'] = $url; } } return $srcs; } }
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