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<?php
/**
* Class Optml_Manager. Adds hooks for processing tags and urls.
*
* @package \Optml\Inc
* @author Optimole <friends@optimole.com>
*/
final class Optml_Manager {
/**
* Holds allowed compatibilities objects.
*
* @var Optml_compatibility[] Compatibilities objects.
*/
public static $loaded_compatibilities = [];
/**
* Cached object instance.
*
* @var Optml_Manager
*/
protected static $instance = null;
/**
* Holds the url replacer class.
*
* @access public
* @since 1.0.0
* @var Optml_Url_Replacer Replacer instance.
*/
public $url_replacer;
/**
* Holds the tag replacer class.
*
* @access public
* @since 1.0.0
* @var Optml_Tag_Replacer Replacer instance.
*/
public $tag_replacer;
/**
* Holds the lazyload replacer class.
*
* @access public
* @since 1.0.0
* @var Optml_Lazyload_Replacer Replacer instance.
*/
public $lazyload_replacer;
/**
* Holds plugin settings.
*
* @var Optml_Settings WordPress settings.
*/
protected $settings;
/**
* Possible integrations with different plugins.
*
* @var array Integrations classes.
*/
private $possible_compatibilities = [
'shortcode_ultimate',
'foogallery',
'envira',
'beaver_builder',
'jet_elements',
'revslider',
'metaslider',
'essential_grid',
'yith_quick_view',
'cache_enabler',
'elementor_builder',
'divi_builder',
'thrive',
'master_slider',
'pinterest',
'sg_optimizer',
'wp_fastest_cache',
'swift_performance',
'w3_total_cache',
'translate_press',
'give_wp',
'woocommerce',
'smart_search_woocommerce',
'facetwp',
'wp_rest_cache',
'wp_bakery',
'elementor_builder_late',
'wpml',
];
/**
* The current state of the buffer.
*
* @var boolean Buffer state.
*/
private static $ob_started = false;
/**
* Class instance method.
*
* @codeCoverageIgnore
* @static
* @return Optml_Manager
* @since 1.0.0
* @access public
*/
public static function instance() {
if ( null === self::$instance ) {
self::$instance = new self();
self::$instance->url_replacer = Optml_Url_Replacer::instance();
self::$instance->tag_replacer = Optml_Tag_Replacer::instance();
self::$instance->lazyload_replacer = Optml_Lazyload_Replacer::instance();
add_action( 'after_setup_theme', [ self::$instance, 'init' ] );
}
return self::$instance;
}
/**
* The initialize method.
*/
public function init() {
$this->settings = new Optml_Settings();
$added_sizes = $this->settings->get( 'defined_image_sizes' );
foreach ( $added_sizes as $key => $value ) {
add_image_size( $key, $value['width'], $value['height'], true );
}
foreach ( $this->possible_compatibilities as $compatibility_class ) {
$compatibility_class = 'Optml_' . $compatibility_class;
$compatibility = new $compatibility_class;
/**
* Check if we should load compatibility.
*
* @var Optml_compatibility $compatibility Class to register.
*/
if ( $compatibility->should_load() ) {
if ( $compatibility->should_load_early() ) {
$compatibility->register();
continue;
}
self::$loaded_compatibilities[ $compatibility_class ] = $compatibility;
}
}
if ( ! $this->should_replace() ) {
return;
}
$this->register_hooks();
}
/**
* Check if we should rewrite the urls.
*
* @return bool If we can replace the image.
*/
public function should_replace() {
if ( apply_filters( 'optml_should_replace_page', false ) ) {
return false;
}
if ( apply_filters( 'optml_force_replacement', false ) === true ) {
return true;
}
if ( ( is_admin() && ! self::is_ajax_request() ) || ! $this->settings->is_connected() || ! $this->settings->is_enabled() || is_customize_preview() ) {
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'preview', $_GET ) && ! empty( $_GET['preview'] ) ) {
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'optml_off', $_GET ) && 'true' == $_GET['optml_off'] ) { // phpcs:ignore WordPress.PHP.StrictComparisons.LooseComparison
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'elementor-preview', $_GET ) && ! empty( $_GET['elementor-preview'] ) ) {
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'ct_builder', $_GET ) && ! empty( $_GET['ct_builder'] ) ) {
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'et_fb', $_GET ) && ! empty( $_GET['et_fb'] ) ) {
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'tve', $_GET ) && $_GET['tve'] == 'true' ) { // phpcs:ignore WordPress.PHP.StrictComparisons.LooseComparison
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'trp-edit-translation', $_GET ) && ( $_GET['trp-edit-translation'] == 'true' || $_GET['trp-edit-translation'] == 'preview' ) ) { // phpcs:ignore WordPress.PHP.StrictComparisons.LooseComparison
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'context', $_GET ) && $_GET['context'] == 'edit' ) { // phpcs:ignore WordPress.PHP.StrictComparisons.LooseComparison
return false; // @codeCoverageIgnore
}
// avada
if ( array_key_exists( 'fb-edit', $_GET ) && ! empty( $_GET['fb-edit'] ) ) {
return false; // @codeCoverageIgnore
}
if ( array_key_exists( 'builder', $_GET ) && ! empty( $_GET['builder'] )
&& array_key_exists( 'builder_id', $_GET ) && ! empty( $_GET['builder_id'] ) ) {
return false; // @codeCoverageIgnore
}
/**
* Disable replacement on POST request and when user is logged in, but allows for sample image call widget in dashboard
*/
if (
isset( $_SERVER['REQUEST_METHOD'] ) &&
$_SERVER['REQUEST_METHOD'] == 'POST' && // phpcs:ignore WordPress.PHP.StrictComparisons.LooseComparison
is_user_logged_in()
&& ( ! isset( $_GET['quality'] ) || ! current_user_can( 'manage_options' ) )
) {
return false; // @codeCoverageIgnore
}
if ( class_exists( 'FLBuilderModel', false ) ) {
$post_data = FLBuilderModel::get_post_data();
if ( isset( $_GET['fl_builder'] ) || isset( $post_data['fl_builder'] ) ) {
return false;
}
}
$filters = $this->settings->get_filters();
return Optml_Filters::should_do_page( $filters[ Optml_Settings::FILTER_TYPE_OPTIMIZE ][ Optml_Settings::FILTER_URL ], $filters[ Optml_Settings::FILTER_TYPE_OPTIMIZE ][ Optml_Settings::FILTER_URL_MATCH ] );
}
/**
* Check if we are in a ajax contex where we should enable replacement.
*
* @return bool Is ajax request?
*/
public static function is_ajax_request() {
if ( apply_filters( 'optml_force_replacement_on', false ) === true ) {
return true;
}
if ( ! function_exists( 'is_user_logged_in' ) ) {
return false;
}
// Disable for logged in users to avoid unexpected results.
if ( is_user_logged_in() ) {
return false;
}
if ( ! function_exists( 'wp_doing_ajax' ) ) {
return false;
}
if ( ! wp_doing_ajax() ) {
return false;
}
if ( isset( $_REQUEST['action'] ) && strpos( $_REQUEST['action'], 'wpmdb' ) !== false ) {
return false;
}
return true;
}
/**
* Register frontend replacer hooks.
*/
public function register_hooks() {
do_action( 'optml_replacer_setup' );
if ( $this->settings->get( 'native_lazyload' ) === 'disabled' ) {
add_filter( 'wp_lazy_loading_enabled', '__return_false' );
}
add_filter( 'the_content', [ $this, 'process_images_from_content' ], PHP_INT_MAX );
/**
* When we have to process cdn images, i.e MIRROR is defined,
* we need this as late as possible for other replacers to occur.
* Otherwise, we can hook first to avoid any other plugins to take care of replacement.
*/
add_action(
self::is_ajax_request() ? 'init' : 'template_redirect',
[
$this,
'process_template_redirect_content',
],
defined( 'OPTML_SITE_MIRROR' ) ? PHP_INT_MAX : PHP_INT_MIN
);
add_action( 'template_redirect', [ $this, 'register_after_setup' ] );
add_action( 'rest_api_init', [ $this, 'process_template_redirect_content' ], PHP_INT_MIN );
foreach ( self::$loaded_compatibilities as $registered_compatibility ) {
$registered_compatibility->register();
}
}
/**
* Run after Optimole is fully setup.
*/
public function register_after_setup() {
do_action( 'optml_after_setup' );
}
/**
* Filter raw HTML content for urls.
*
* @param string $html HTML to filter.
*
* @return mixed Filtered content.
*/
public function replace_content( $html ) {
if ( defined( 'REST_REQUEST' ) && REST_REQUEST && is_user_logged_in() && ( apply_filters( 'optml_force_replacement', false ) !== true ) ) {
return $html;
}
$html = $this->add_html_class( $html );
$html = $this->process_images_from_content( $html );
if ( $this->settings->get( 'video_lazyload' ) === 'enabled' ) {
$html = apply_filters( 'optml_video_replace', $html );
if ( Optml_Lazyload_Replacer::found_iframe() === true ) {
if ( strpos( $html, Optml_Lazyload_Replacer::IFRAME_TEMP_COMMENT ) !== false ) {
$html = str_replace( Optml_Lazyload_Replacer::IFRAME_TEMP_COMMENT, Optml_Lazyload_Replacer::IFRAME_PLACEHOLDER_CLASS, $html );
} else {
$html = preg_replace( '/<head>(.*)<\/head>/ism', '<head> $1' . Optml_Lazyload_Replacer::IFRAME_PLACEHOLDER_STYLE . '</head>', $html );
}
}
}
$html = apply_filters( 'optml_url_pre_process', $html );
$html = $this->process_urls_from_content( $html );
$html = apply_filters( 'optml_url_post_process', $html );
return $html;
}
/**
* Adds a filter that allows adding classes to the HTML tag.
*
* @param string $content The HTML content.
*
* @return mixed
*/
public function add_html_class( $content ) {
if ( empty( $content ) ) {
return $content;
}
$additional_html_classes = apply_filters( 'optml_additional_html_classes', [] );
if ( ! $additional_html_classes ) {
return $content;
}
if ( preg_match( '/<html.*>/ismU', $content, $matches, PREG_OFFSET_CAPTURE ) === 1 ) {
$add_classes = implode( ' ', $additional_html_classes );
foreach ( $matches as $match ) {
if ( strpos( $match[0], 'class' ) !== false ) {
$new_tag = str_replace( [ 'class="', "class='" ], [ 'class="' . $add_classes, "class='" . $add_classes ], $match[0] );
} else {
$new_tag = str_replace( 'html ', 'html class="' . $add_classes . '" ', $match[0] );
}
$content = str_replace( $match[0], $new_tag, $content );
}
}
return $content;
}
/**
* Adds a filter with detected images tags and the content.
*
* @param string $content The HTML content.
*
* @return mixed
*/
public function process_images_from_content( $content ) {
if ( self::should_ignore_image_tags() ) {
return $content;
}
$images = self::parse_images_from_html( $content );
if ( empty( $images ) ) {
return $content;
}
return apply_filters( 'optml_content_images_tags', $content, $images );
}
/**
* Check if we are on a amp endpoint.
*
* IMPORTANT: This needs to be used after parse_query hook, otherwise will return false positives.
*
* @return bool
*/
public static function should_ignore_image_tags() {
// Ignore image tags replacement in amp context as they are not available.
if ( function_exists( 'is_amp_endpoint' ) ) {
return is_amp_endpoint();
}
if ( function_exists( 'ampforwp_is_amp_endpoint' ) ) {
return ampforwp_is_amp_endpoint();
}
// Ignore image tag replacement in feed context as we don't need it.
if ( is_feed() ) {
return true;
}
return apply_filters( 'optml_should_ignore_image_tags', false ) === true;
}
/**
* Match all images and any relevant <a> tags in a block of HTML.
*
* @param string $content Some HTML.
*
* @return array An array of $images matches, where $images[0] is
* an array of full matches, and the link_url, img_tag,
* and img_url keys are arrays of those matches.
*/
public static function parse_images_from_html( $content ) {
$images = [];
$header_start = null;
$header_end = null;
if ( preg_match( '/<header.*<\/header>/ismU', $content, $matches, PREG_OFFSET_CAPTURE ) === 1 ) {
$header_start = $matches[0][1];
$header_end = $header_start + strlen( $matches[0][0] );
}
$regex = '/(?:<a[^>]+?href=["|\'](?P<link_url>[^\s]+?)["|\'][^>]*?>\s*)?(?P<img_tag>(?:<noscript\s*>\s*)?<img[^>]*?\s?(?:' . implode( '|', array_merge( [ 'src' ], Optml_Tag_Replacer::possible_src_attributes() ) ) . ')=["\'\\\\]*?(?P<img_url>[' . Optml_Config::$chars . ']{10,}).*?>(?:\s*<\/noscript\s*>)?){1}(?:\s*<\/a>)?/ismu';
if ( preg_match_all( $regex, $content, $images, PREG_OFFSET_CAPTURE ) ) {
if ( OPTML_DEBUG ) {
do_action( 'optml_log', $images );
}
foreach ( $images as $key => $unused ) {
// Simplify the output as much as possible, mostly for confirming test results.
if ( is_numeric( $key ) && $key > 0 ) {
unset( $images[ $key ] );
continue;
}
$is_no_script = false;
foreach ( $unused as $url_key => $url_value ) {
if ( $key === 'img_url' ) {
$images[ $key ][ $url_key ] = rtrim( $url_value[0], '\\' );
continue;
}
$images[ $key ][ $url_key ] = $url_value[0];
if ( $key === 0 ) {
$images['in_header'][ $url_key ] = $header_start !== null ? ( $url_value[1] > $header_start && $url_value[1] < $header_end ) : false;
// Check if we are in the noscript context.
if ( $is_no_script === false ) {
$is_no_script = strpos( $images[0][ $url_key ], '<noscript' ) !== false ? true : false;
}
if ( $is_no_script ) {
$images['in_header'][ $url_key ] = true;
$is_no_script = strpos( $images[0][ $url_key ], '</noscript' ) !== false ? false : true;
}
}
}
}
return $images;
}
return [];
}
/**
* Process url replacement from raw html strings.
*
* @param string $html Raw html.
*
* @return string Processed string.
*/
public function process_urls_from_content( $html ) {
$extracted_urls = $this->extract_urls_from_content( $html );
if ( OPTML_DEBUG ) {
do_action( 'optml_log', 'matched urls' );
do_action( 'optml_log', $extracted_urls );
}
return $this->do_url_replacement( $html, $extracted_urls );
}
/**
* Method to extract assets from content.
*
* @param string $content The HTML content.
*
* @return array
*/
public function extract_urls_from_content( $content ) {
$extensions = array_keys( Optml_Config::$image_extensions );
if ( $this->settings->use_cdn() && ! self::should_ignore_image_tags() ) {
$extensions = array_merge( $extensions, array_keys( Optml_Config::$assets_extensions ) );
}
$regex = '/(?:[(|\s\';",=\]])((?:http|\/|\\\\){1}(?:[' . Optml_Config::$chars . ']{10,}\.(?:' . implode( '|', $extensions ) . ')))(?=(?:http|>|%3F|\?|"|&|,|\s|\'|\)|\||\\\\|}|\[))/Uu';
preg_match_all(
$regex,
$content,
$urls
);
return $this->normalize_urls( $urls[1] );
}
/**
* Normalize extracted urls.
*
* @param array $urls Raw urls extracted.
*
* @return array Normalized array.
*/
private function normalize_urls( $urls ) {
$urls = array_map(
function ( $value ) {
$value = str_replace( '"', '', $value );
return rtrim( $value, '\\";\'' );
},
$urls
);
$urls = array_unique( $urls );
return array_values( $urls );
}
/**
* Process string content and replace possible urls.
*
* @param string $html String content.
* @param array $extracted_urls Urls to check.
*
* @return string Processed html.
*/
private function do_url_replacement( $html, $extracted_urls ) {
$extracted_urls = apply_filters( 'optml_extracted_urls', $extracted_urls );
if ( empty( $extracted_urls ) ) {
return $html;
}
$slashed_config = addcslashes( Optml_Config::$service_url, '/' );
$extracted_urls = array_filter(
$extracted_urls,
function ( $value ) use ( $slashed_config ) {
return strpos( $value, Optml_Config::$service_url ) === false && strpos( $value, $slashed_config ) === false || Optml_Media_Offload::is_not_processed_image( $value );
}
);
$upload_resource = $this->tag_replacer->get_upload_resource();
$urls = array_combine( $extracted_urls, $extracted_urls );
$urls = array_map(
function ( $url ) use ( $upload_resource ) {
$is_slashed = strpos( $url, '\/' ) !== false;
$is_relative = strpos(
$url,
$is_slashed ?
addcslashes( $upload_resource['content_path'], '/' ) :
$upload_resource['content_path']
) === 0;
if ( $is_relative ) {
$url = $upload_resource['content_host'] . $url;
}
return apply_filters( 'optml_content_url', $url );
},
$urls
);
foreach ( $urls as $origin => $replace ) {
$html = preg_replace( '/(?<![\/|:|\\w])' . preg_quote( $origin, '/' ) . '/m', $replace, $html );
}
return $html;
}
/**
* Init html replacer handler.
*/
public function process_template_redirect_content() {
// Early exit if function was already called, we don't want duplicate ob_start
if ( self::$ob_started === true ) {
return;
}
self::$ob_started = true;
// We no longer need this if the handler was started.
remove_filter( 'the_content', [$this, 'process_images_from_content'], PHP_INT_MAX );
ob_start(
[&$this, 'replace_content']
);
}
/**
* Throw error on object clone
*
* The whole idea of the singleton design pattern is that there is a single
* object therefore, we don't want the object to be cloned.
*
* @codeCoverageIgnore
* @access public
* @return void
* @since 1.0.0
*/
public function __clone() {
// Cloning instances of the class is forbidden.
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'optimole-wp' ), '1.0.0' );
}
/**
* Disable unserializing of the class
*
* @codeCoverageIgnore
* @access public
* @return void
* @since 1.0.0
*/
public function __wakeup() {
// Unserializing instances of the class is forbidden.
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'optimole-wp' ), '1.0.0' );
}
}
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