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<?php
/**
* Class and methods to implement ExactDN (based on Photon implementation).
*
* @link https://ewww.io
* @package EIO
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
if ( ! class_exists( 'ExactDN' ) ) {
/**
* Enables plugin to filter the page content and replace image urls with ExactDN urls.
*/
class ExactDN extends EIO_Page_Parser {
/**
* A list of user-defined exclusions, populated by validate_user_exclusions().
*
* @access protected
* @var array $user_exclusions
*/
protected $user_exclusions = array();
/**
* A list of image sizes registered for attachments.
*
* @access protected
* @var array $image_sizes
*/
protected static $image_sizes = null;
/**
* Indicates if we are in full-page filtering mode.
*
* @access public
* @var bool $filtering_the_page
*/
public $filtering_the_page = false;
/**
* Indicates if we are in content filtering mode.
*
* @access public
* @var bool $filtering_the_content
*/
public $filtering_the_content = false;
/**
* List of permitted domains for ExactDN rewriting.
*
* @access public
* @var array $allowed_domains
*/
public $allowed_domains = array();
/**
* Path portion to remove at beginning of URL, usually for path-style S3 domains.
*
* @access public
* @var string $remove_path
*/
public $remove_path = '';
/**
* The ExactDN domain/zone.
*
* @access private
* @var float $elapsed_time
*/
private $exactdn_domain = false;
/**
* Is this a sub-folder network/multi-site install?
*
* @access private
* @var bool $sub_folder
*/
private $sub_folder = false;
/**
* The Easy IO Plan/Tier ID
*
* @access private
* @var int $plan_id
*/
private $plan_id = 1;
/**
* The detected site scheme (http/https).
*
* @access private
* @var string $scheme
*/
private $scheme = false;
/**
* Allow us to track how much overhead ExactDN introduces.
*
* @access private
* @var float $elapsed_time
*/
private $elapsed_time = 0;
/**
* Keep track of the attribute we use for srcset, in case a lazy load plugin is active.
*
* @access private
* @var string $srcset_attr
*/
private $srcset_attr = 'srcset';
/**
* Register (once) actions and filters for ExactDN. If you want to use this class, use the global.
*/
function __construct() {
parent::__construct( __FILE__ );
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
global $exactdn;
if ( is_object( $exactdn ) ) {
$this->debug_message( 'you are doing it wrong' );
return;
}
// Bail out on customizer.
if ( is_customize_preview() ) {
return;
}
$uri = add_query_arg( null, null );
$this->debug_message( "request uri is $uri" );
if ( '/robots.txt' === $uri || '/sitemap.xml' === $uri ) {
return;
}
add_filter( 'exactdn_skip_page', array( $this, 'skip_page' ), 10, 2 );
/**
* Allow pre-empting the parsers by page.
*
* @param bool Whether to skip parsing the page.
* @param string $uri The URL of the page.
*/
if ( apply_filters( 'exactdn_skip_page', false, $uri ) ) {
return;
}
if ( ! $this->scheme ) {
$site_url = get_home_url();
$scheme = 'http';
if ( strpos( $site_url, 'https://' ) !== false ) {
$this->debug_message( "$site_url contains https" );
$scheme = 'https';
} elseif ( strpos( $this->content_url, 'https://' ) !== false ) {
$this->debug_message( $this->content_url . ' contains https' );
$scheme = 'https';
} elseif ( isset( $_SERVER['HTTPS'] ) && 'off' !== $_SERVER['HTTPS'] ) {
$this->debug_message( 'page requested over https' );
$scheme = 'https';
} else {
$this->debug_message( 'using plain http' );
}
$this->scheme = $scheme;
}
if ( is_multisite() && defined( 'SUBDOMAIN_INSTALL' ) && SUBDOMAIN_INSTALL ) {
$this->debug_message( 'working in sub-domain mode' );
} elseif ( is_multisite() ) {
if ( defined( 'EXACTDN_SUB_FOLDER' ) && EXACTDN_SUB_FOLDER ) {
$this->sub_folder = true;
$this->debug_message( 'working in sub-folder mode due to constant override' );
} elseif ( defined( 'EXACTDN_SUB_FOLDER' ) ) {
$this->debug_message( 'working in sub-domain mode due to constant override' );
} elseif ( get_site_option( 'exactdn_sub_folder' ) ) {
$this->sub_folder = true;
$this->debug_message( 'working in sub-folder mode due to global option' );
} elseif ( get_current_blog_id() > 1 ) {
$network_site_url = network_site_url();
$network_domain = $this->parse_url( $network_site_url, PHP_URL_HOST );
if ( $network_domain === $this->upload_domain ) {
$this->sub_folder = true;
$this->debug_message( 'working in sub-folder mode due to matching domain' );
}
}
}
// Make sure we have an ExactDN domain to use.
if ( ! $this->setup() ) {
return;
}
// Enables scheduled health checks via wp-cron.
add_action( 'easyio_verification_checkin', array( $this, 'health_check' ) );
// Images in post content and galleries.
add_filter( 'the_content', array( $this, 'filter_the_content' ), 999999 );
// Start an output buffer before any output starts.
add_filter( $this->prefix . 'filter_page_output', array( $this, 'filter_page_output' ), 5 );
// Core image retrieval.
if ( defined( 'EIO_DISABLE_DEEP_INTEGRATION' ) && EIO_DISABLE_DEEP_INTEGRATION ) {
$this->debug_message( 'deep (image_downsize) integration disabled' );
} elseif ( ! function_exists( 'aq_resize' ) ) {
add_filter( 'image_downsize', array( $this, 'filter_image_downsize' ), 10, 3 );
} else {
$this->debug_message( 'aq_resize detected, image_downsize filter disabled' );
}
// Disable image_downsize filter during themify_get_image().
add_action( 'themify_before_post_image', array( $this, 'disable_image_downsize' ) );
if ( defined( 'EXACTDN_IMAGE_DOWNSIZE_SCALE' ) && EXACTDN_IMAGE_DOWNSIZE_SCALE ) {
add_action( 'exactdn_image_downsize_array', array( $this, 'image_downsize_scale' ) );
}
// Check REST API requests to see if ExactDN should be running.
add_filter( 'rest_request_before_callbacks', array( $this, 'parse_restapi_maybe' ), 10, 3 );
// Overrides for admin-ajax images.
add_filter( 'exactdn_admin_allow_image_downsize', array( $this, 'allow_admin_image_downsize' ), 10, 2 );
add_filter( 'exactdn_admin_allow_image_srcset', array( $this, 'allow_admin_image_downsize' ), 10, 2 );
// Overrides for "pass through" images.
add_filter( 'exactdn_pre_args', array( $this, 'exactdn_remove_args' ), 10, 3 );
// Overrides for user exclusions.
add_filter( 'exactdn_skip_image', array( $this, 'exactdn_skip_user_exclusions' ), 9, 2 );
add_filter( 'exactdn_skip_for_url', array( $this, 'exactdn_skip_user_exclusions' ), 9, 2 );
// Responsive image srcset substitution.
add_filter( 'wp_calculate_image_srcset', array( $this, 'filter_srcset_array' ), 1001, 5 );
add_filter( 'wp_calculate_image_sizes', array( $this, 'filter_sizes' ), 1, 2 ); // Early so themes can still filter.
// Filter for FacetWP JSON responses.
add_filter( 'facetwp_render_output', array( $this, 'filter_facetwp_json_output' ) );
// Filter for Envira image URLs.
add_filter( 'envira_gallery_output_item_data', array( $this, 'envira_gallery_output_item_data' ) );
add_filter( 'envira_gallery_image_src', array( $this, 'plugin_get_image_url' ) );
// Filter for NextGEN image URLs within JS.
add_filter( 'ngg_pro_lightbox_images_queue', array( $this, 'ngg_pro_lightbox_images_queue' ) );
add_filter( 'ngg_get_image_url', array( $this, 'plugin_get_image_url' ) );
// Filter for Spotlight Social Media Feeds.
add_filter( 'spotlight/instagram/server/transform_item', array( $this, 'spotlight_instagram_response' ) );
// Filter for legacy WooCommerce API endpoints.
add_filter( 'woocommerce_api_product_response', array( $this, 'woocommerce_api_product_response' ) );
// DNS prefetching.
add_filter( 'wp_resource_hints', array( $this, 'dns_prefetch' ), 10, 2 );
// Get all the script/css urls and rewrite them (if enabled).
if ( $this->get_option( 'exactdn_all_the_things' ) ) {
add_filter( 'style_loader_src', array( $this, 'parse_enqueue' ), 9999 );
add_filter( 'script_loader_src', array( $this, 'parse_enqueue' ), 9999 );
}
$this->set_option( 'exactdn_prevent_db_queries', true );
// Improve the default content_width for Twenty Nineteen.
global $content_width;
if ( function_exists( 'twentynineteen_setup' ) && 640 === (int) $content_width ) {
$content_width = 932;
}
// Configure Autoptimize with our CDN domain.
add_filter( 'autoptimize_filter_cssjs_multidomain', array( $this, 'add_cdn_domain' ) );
if ( $this->is_as3cf_cname_active() ) {
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_as3cf_cname_active' );
return;
}
$upload_url_parts = $this->parse_url( $this->site_url );
if ( empty( $upload_url_parts ) ) {
$this->debug_message( "could not break down URL: $this->site_url" );
return;
}
if ( ! $this->get_exactdn_option( 'local_domain' ) ) {
$this->set_exactdn_option( 'local_domain', $this->upload_domain );
}
$this->debug_message( "allowing images from here: $this->upload_domain" );
if (
(
false !== strpos( $this->upload_domain, 'amazonaws.com' ) ||
false !== strpos( $this->upload_domain, 'digitaloceanspaces.com' ) ||
false !== strpos( $this->upload_domain, 'storage.googleapis.com' )
)
&& ! empty( $upload_url_parts['path'] )
) {
$this->remove_path = rtrim( $upload_url_parts['path'], '/' );
$this->debug_message( "removing this from urls: $this->remove_path" );
}
if (
$this->get_exactdn_option( 'local_domain' ) !== $this->upload_domain &&
! $this->allow_image_domain( $this->get_exactdn_option( 'local_domain' ) ) &&
is_admin()
) {
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_domain_mismatch' );
}
$this->allowed_domains[] = $this->exactdn_domain;
$this->allowed_domains = apply_filters( 'exactdn_allowed_domains', $this->allowed_domains );
$this->debug_message( 'allowed domains: ' . implode( ',', $this->allowed_domains ) );
$this->get_allowed_paths();
$this->validate_user_exclusions();
}
/**
* If ExactDN is enabled, validates and configures the ExactDN domain name.
*/
function setup() {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
// If we don't have a domain yet, go grab one.
$this->plan_id = (int) $this->get_exactdn_option( 'plan_id' );
$new_site = false;
if ( ! $this->get_exactdn_domain() ) {
$this->debug_message( 'attempting to activate exactDN' );
$exactdn_domain = $this->activate_site();
$new_site = true;
} else {
$this->debug_message( 'grabbing existing exactDN domain' );
$exactdn_domain = $this->get_exactdn_domain();
}
if ( ! $exactdn_domain ) {
delete_option( $this->prefix . 'exactdn' );
delete_site_option( $this->prefix . 'exactdn' );
$this->cron_setup( false );
return false;
}
$verified = true;
// If we have a domain, verify it.
if ( $new_site ) {
$verified = $this->verify_domain( $exactdn_domain );
if ( $verified ) {
// When this is a new site that is verified, setup health check.
$this->cron_setup();
}
}
if ( $verified ) {
$this->exactdn_domain = $exactdn_domain;
$this->debug_message( 'exactdn_domain: ' . $exactdn_domain );
$this->debug_message( 'exactdn_plan_id: ' . $this->plan_id );
return true;
}
delete_option( $this->prefix . 'exactdn_domain' );
delete_option( $this->prefix . 'exactdn_verified' );
delete_site_option( $this->prefix . 'exactdn_domain' );
delete_site_option( $this->prefix . 'exactdn_verified' );
$this->cron_setup( false );
return false;
}
/**
* Setup wp_cron tasks for scheduled verification.
*
* @global object $wpdb
*
* @param bool $schedule True to add event, false to remove/unschedule it.
*/
function cron_setup( $schedule = true ) {
$this->debug_message( '<b>' . __FUNCTION__ . '()</b>' );
$event = 'easyio_verification_checkin';
// Setup scheduled optimization if the user has enabled it, and it isn't already scheduled.
if ( $schedule && ! wp_next_scheduled( $event ) ) {
$this->debug_message( "scheduling $event" );
wp_schedule_event( time() + DAY_IN_SECONDS, apply_filters( 'easyio_verification_schedule', 'daily', $event ), $event );
} elseif ( $schedule ) {
$this->debug_message( "$event already scheduled: " . wp_next_scheduled( $event ) );
} elseif ( wp_next_scheduled( $event ) ) {
$this->debug_message( "un-scheduling $event" );
wp_clear_scheduled_hook( $event );
if ( ! function_exists( 'is_plugin_active_for_network' ) && is_multisite() ) {
// Need to include the plugin library for the is_plugin_active function.
require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
}
if ( is_multisite() && is_plugin_active_for_network( constant( strtoupper( $this->prefix ) . 'PLUGIN_FILE_REL' ) ) ) {
global $wpdb;
$blogs = $wpdb->get_results( $wpdb->prepare( "SELECT blog_id FROM $wpdb->blogs WHERE site_id = %d", $wpdb->siteid ), ARRAY_A );
if ( ewww_image_optimizer_iterable( $blogs ) ) {
foreach ( $blogs as $blog ) {
switch_to_blog( $blog['blog_id'] );
wp_clear_scheduled_hook( $event );
restore_current_blog();
}
}
}
}
}
/**
* Use the Site URL to get the zone domain.
*/
function activate_site() {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( $this->is_as3cf_cname_active() ) {
global $exactdn_activate_error;
$exactdn_activate_error = 'as3cf_cname_active';
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_as3cf_cname_active' );
return false;
}
$site_url = $this->content_url();
$home_url = home_url();
$url = 'http://optimize.exactlywww.com/exactdn/activate.php';
$ssl = wp_http_supports( array( 'ssl' ) );
if ( $ssl ) {
$url = set_url_scheme( $url, 'https' );
}
add_filter( 'http_headers_useragent', $this->prefix . 'cloud_useragent', PHP_INT_MAX );
$result = wp_remote_post(
$url,
array(
'timeout' => 10,
'body' => array(
'site_url' => $site_url,
'home_url' => $home_url,
),
)
);
if ( is_wp_error( $result ) ) {
$error_message = $result->get_error_message();
$this->debug_message( "exactdn activation request failed: $error_message" );
global $exactdn_activate_error;
$exactdn_activate_error = $error_message;
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_error' );
return false;
} elseif ( ! empty( $result['body'] ) && strpos( $result['body'], 'domain' ) !== false ) {
$response = json_decode( $result['body'], true );
if ( ! empty( $response['domain'] ) ) {
if (
false !== strpos( $site_url, 'amazonaws.com' ) ||
false !== strpos( $site_url, 'digitaloceanspaces.com' ) ||
false !== strpos( $site_url, 'storage.googleapis.com' ) ||
$this->s3_active
) {
$this->set_exactdn_option( 'verify_method', -1, false );
}
if ( ! empty( $response['plan_id'] ) ) {
$this->set_exactdn_option( 'plan_id', (int) $response['plan_id'] );
$this->plan_id = (int) $response['plan_id'];
}
if ( get_option( 'exactdn_never_been_active' ) ) {
$this->set_option( $this->prefix . 'lazy_load', true );
$this->set_option( 'exactdn_lossy', true );
$this->set_option( 'exactdn_all_the_things', true );
delete_option( 'exactdn_never_been_active' );
}
if ( function_exists( 'envira_flush_all_cache' ) ) {
envira_flush_all_cache();
}
return $this->set_exactdn_domain( $response['domain'] );
}
} elseif ( ! empty( $result['body'] ) && false !== strpos( $result['body'], 'error' ) ) {
$response = json_decode( $result['body'], true );
$error_message = $response['error'];
$this->debug_message( "exactdn activation request failed: $error_message" );
global $exactdn_activate_error;
$exactdn_activate_error = $error_message;
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_error' );
return false;
}
return false;
}
/**
* Do a health check to verify the Easy IO domain is still good.
*/
function health_check() {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$this->verify_domain( $this->exactdn_domain );
$this->set_exactdn_option( 'checkin', time() - 60 );
}
/**
* Verify the ExactDN domain.
*
* @param string $domain The ExactDN domain to verify.
* @return bool Whether the domain is still valid.
*/
function verify_domain( $domain ) {
if ( empty( $domain ) ) {
return false;
}
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
// Check the time, to see how long it has been since we verified the domain.
$last_checkin = (int) $this->get_exactdn_option( 'checkin' );
if ( $this->get_exactdn_option( 'verified' ) && $last_checkin > time() ) {
$this->debug_message( 'not time yet: ' . $this->human_time_diff( $last_checkin ) );
return true;
}
$this->check_verify_method();
$this->set_exactdn_option( 'checkin', time() + HOUR_IN_SECONDS );
// Set a default error.
global $exactdn_activate_error;
$exactdn_activate_error = 'zone not verified';
// Primary check sends the test URL to the API for full verification.
$api_url = 'http://optimize.exactlywww.com/exactdn/verify.php';
$ssl = wp_http_supports( array( 'ssl' ) );
if ( $ssl ) {
$api_url = set_url_scheme( $api_url, 'https' );
}
if ( ! defined( 'EXACTDN_LOCAL_DOMAIN' ) && (int) $this->get_exactdn_option( 'verify_method' ) > 0 ) {
// Test with an image file that should be available on the ExactDN zone.
$test_url = plugins_url( '/images/test.png', constant( strtoupper( $this->prefix ) . 'PLUGIN_FILE' ) );
$local_domain = $this->parse_url( $test_url, PHP_URL_HOST );
$test_url = str_replace( $local_domain, $domain, $test_url );
$this->debug_message( "test url is $test_url" );
add_filter( 'http_headers_useragent', $this->prefix . 'cloud_useragent', PHP_INT_MAX );
$test_result = wp_remote_post(
$api_url,
array(
'timeout' => 10,
'body' => array(
'alias' => $domain,
'url' => $test_url,
'origin' => $this->content_url(),
),
)
);
if ( is_wp_error( $test_result ) ) {
$error_message = $test_result->get_error_message();
$this->debug_message( "exactdn (1) verification request failed: $error_message" );
$exactdn_activate_error = $error_message;
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_error' );
return false;
} elseif ( ! empty( $test_result['body'] ) && false === strpos( $test_result['body'], 'error' ) ) {
$response = json_decode( $test_result['body'], true );
if ( ! empty( $response['success'] ) ) {
$this->debug_message( 'exactdn (real-world) verification succeeded' );
$this->set_exactdn_option( 'verified', 1, false );
$this->set_exactdn_option( 'verify_method', -1, false ); // After initial activation, use simpler API verification.
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_success' );
return true;
}
} elseif ( ! empty( $test_result['body'] ) ) {
$response = json_decode( $test_result['body'], true );
$error_message = $response['error'];
$this->debug_message( "exactdn (1) verification request failed: $error_message" );
$exactdn_activate_error = $error_message;
if ( false !== strpos( $error_message, 'not found' ) ) {
delete_option( $this->prefix . 'exactdn_domain' );
delete_site_option( $this->prefix . 'exactdn_domain' );
}
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_error' );
return false;
}
if ( ! empty( $test_result['response']['code'] ) && 200 !== (int) $test_result['response']['code'] ) {
$this->debug_message( 'received response code: ' . $test_result['response']['code'] );
}
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_error' );
return false;
}
// Secondary test against the API db.
add_filter( 'http_headers_useragent', $this->prefix . 'cloud_useragent', PHP_INT_MAX );
$result = wp_remote_post(
$api_url,
array(
'timeout' => 10,
'body' => array(
'alias' => $domain,
'origin' => $this->content_url(),
),
)
);
if ( is_wp_error( $result ) ) {
$error_message = $result->get_error_message();
$this->debug_message( "exactdn verification request failed: $error_message" );
$exactdn_activate_error = $error_message;
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_error' );
return false;
} elseif ( ! empty( $result['body'] ) && false === strpos( $result['body'], 'error' ) ) {
$response = json_decode( $result['body'], true );
if ( ! empty( $response['success'] ) ) {
if ( ! empty( $response['plan_id'] ) ) {
$this->set_exactdn_option( 'plan_id', (int) $response['plan_id'] );
$this->plan_id = (int) $response['plan_id'];
}
$this->debug_message( 'exactdn verification via API succeeded' );
$this->set_exactdn_option( 'verified', 1, false );
if ( empty( $last_checkin ) ) {
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_success' );
}
return true;
}
} elseif ( ! empty( $result['body'] ) ) {
$response = json_decode( $result['body'], true );
$error_message = $response['error'];
$this->debug_message( "exactdn verification request failed: $error_message" );
$exactdn_activate_error = $error_message;
if ( false !== strpos( $error_message, 'not found' ) ) {
delete_option( $this->prefix . 'exactdn_domain' );
delete_site_option( $this->prefix . 'exactdn_domain' );
}
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_error' );
return false;
}
if ( ! empty( $result['response']['code'] ) && 200 !== (int) $result['response']['code'] ) {
$this->debug_message( 'received response code: ' . $result['response']['code'] );
}
add_action( 'admin_notices', $this->prefix . 'notice_exactdn_activation_error' );
return false;
}
/**
* Run a simulation to decide which verification method to use.
*/
function check_verify_method() {
if ( ! $this->get_exactdn_option( 'verify_method' ) ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
// Prelim test with a known valid image to ensure http(s) connectivity.
$sim_url = 'https://optimize.exactdn.com/exactdn/testorig.jpg';
add_filter( 'http_headers_useragent', $this->prefix . 'cloud_useragent', PHP_INT_MAX );
$sim_result = wp_remote_get( $sim_url );
if ( is_wp_error( $sim_result ) ) {
$error_message = $sim_result->get_error_message();
$this->debug_message( "exactdn (simulated) verification request failed: $error_message" );
} elseif ( ! empty( $sim_result['body'] ) && strlen( $sim_result['body'] ) > 300 ) {
if ( 'ffd8ff' === bin2hex( substr( $sim_result['body'], 0, 3 ) ) ) {
$this->debug_message( 'exactdn (simulated) verification succeeded' );
$this->set_exactdn_option( 'verify_method', 1, false );
return;
}
} else {
$this->debug_message( 'exactdn (simulated) verification request failed, error unknown' );
}
$this->set_exactdn_option( 'verify_method', -1, false );
}
}
/**
* Allow external classes/functions to check the Easy IO Plan ID (to customize UI).
*
* @return int The currently validated plan ID (1-3).
*/
function get_plan_id() {
return (int) $this->plan_id;
}
/**
* Validate the ExactDN domain.
*
* @param string $domain The unverified ExactDN domain.
* @return string The validated ExactDN domain.
*/
function sanitize_domain( $domain ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( ! $domain ) {
return;
}
$domain = trim( $domain );
if ( strlen( $domain ) > 80 ) {
$this->debug_message( "$domain too long" );
return false;
}
if ( ! preg_match( '#^[A-Za-z0-9\.\-]+$#', $domain ) ) {
$this->debug_message( "$domain has bad characters" );
return false;
}
return $domain;
}
/**
* Get the ExactDN domain name to use.
*
* @return string The ExactDN domain name for this site or network.
*/
function get_exactdn_domain() {
if ( defined( 'EXACTDN_DOMAIN' ) && EXACTDN_DOMAIN ) {
return $this->sanitize_domain( EXACTDN_DOMAIN );
}
if ( is_multisite() ) {
if ( $this->sub_folder ) {
return $this->sanitize_domain( get_site_option( $this->prefix . 'exactdn_domain' ) );
}
}
return $this->sanitize_domain( get_option( $this->prefix . 'exactdn_domain' ) );
}
/**
* Method to override the ExactDN domain at runtime, use with caution.
*
* @param string $domain The ExactDN domain to use instead.
*/
function set_domain( $domain ) {
if ( is_string( $domain ) ) {
$this->exactdn_domain = $domain;
}
}
/**
* Get the ExactDN option.
*
* @param string $option_name The name of the ExactDN option.
* @return int The numerical value of the option.
*/
function get_exactdn_option( $option_name ) {
if ( defined( 'EXACTDN_DOMAIN' ) && EXACTDN_DOMAIN ) {
return get_option( $this->prefix . 'exactdn_' . $option_name );
}
if ( is_multisite() ) {
if ( $this->sub_folder ) {
return get_site_option( $this->prefix . 'exactdn_' . $option_name );
}
}
return get_option( $this->prefix . 'exactdn_' . $option_name );
}
/**
* Set the ExactDN domain name to use.
*
* @param string $domain The ExactDN domain name for this site or network.
*/
function set_exactdn_domain( $domain ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( defined( 'EXACTDN_DOMAIN' ) && $this->sanitize_domain( EXACTDN_DOMAIN ) ) {
return true;
}
$domain = $this->sanitize_domain( $domain );
if ( ! $domain ) {
return false;
}
if ( is_multisite() ) {
if ( $this->sub_folder ) {
update_site_option( $this->prefix . 'exactdn_domain', $domain );
return $domain;
}
}
update_option( $this->prefix . 'exactdn_domain', $domain );
return $domain;
}
/**
* Set an option for ExactDN.
*
* @param string $option_name The name of the ExactDN option.
* @param int $option_value The value to set for the ExactDN option.
* @param bool $autoload Optional. Whether to load the option when WordPress starts up.
*/
function set_exactdn_option( $option_name, $option_value, $autoload = null ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( defined( 'EXACTDN_DOMAIN' ) && EXACTDN_DOMAIN ) {
return update_option( $this->prefix . 'exactdn_' . $option_name, $option_value, $autoload );
}
if ( is_multisite() ) {
if ( $this->sub_folder ) {
return update_site_option( $this->prefix . 'exactdn_' . $option_name, $option_value );
}
}
return update_option( $this->prefix . 'exactdn_' . $option_name, $option_value, $autoload );
}
/**
* Check to see if a CNAME is configured in WP Offload Media.
*
* @return bool True if a CNAME is active, false otherwise.
*/
function is_as3cf_cname_active() {
// Find the WP Offload Media domain/path.
global $as3cf;
if ( class_exists( 'Amazon_S3_And_CloudFront' ) && is_object( $as3cf ) ) {
if ( 'storage' !== $as3cf->get_setting( 'delivery-provider' ) ) {
$this->debug_message( 'active delivery provider: ' . $as3cf->get_setting( 'delivery-provider' ) );
if ( $as3cf->get_setting( 'enable-delivery-domain' ) && $as3cf->get_setting( 'delivery-domain' ) ) {
$delivery_domain = $as3cf->get_setting( 'delivery-domain' );
$this->debug_message( "found WOM CNAME domain: $delivery_domain" );
return true;
}
}
}
return false;
}
/**
* Get the paths for wp-content, wp-includes, and the uploads directory.
* These are used to help determine which URLs are allowed to be rewritten for Easy IO.
*/
function get_allowed_paths() {
$wp_content_path = trim( $this->parse_url( content_url(), PHP_URL_PATH ), '/' );
$wp_include_path = trim( $this->parse_url( includes_url(), PHP_URL_PATH ), '/' );
$this->debug_message( "wp-content path: $wp_content_path" );
$this->debug_message( "wp-includes path: $wp_include_path" );
$this->content_path = basename( $wp_content_path );
$this->include_path = basename( $wp_include_path );
$this->uploads_path = basename( $wp_content_path );
// NOTE: $this->uploads_path is not currently in use, so we'll see if anyone needs it.
$uploads_info = wp_get_upload_dir();
if ( ! empty( $uploads_info['baseurl'] ) && ! empty( $wp_content_path ) && false === strpos( $uploads_info['baseurl'], $wp_content_path ) ) {
$uploads_path = trim( $this->parse_url( $uploads_info['baseurl'], PHP_URL_PATH ), '/' );
$this->debug_message( "wp uploads path: $uploads_path" );
$this->uploads_path = basename( $uploads_path );
}
}
/**
* Validate the user-defined exclusions for "all the things" rewriting.
*/
function validate_user_exclusions() {
$user_exclusions = $this->get_option( 'exactdn_exclude' );
if ( ! empty( $user_exclusions ) ) {
if ( is_string( $user_exclusions ) ) {
$user_exclusions = array( $user_exclusions );
}
if ( is_array( $user_exclusions ) ) {
foreach ( $user_exclusions as $exclusion ) {
if ( ! is_string( $exclusion ) ) {
continue;
}
if ( $this->content_path && false !== strpos( $exclusion, $this->content_path ) ) {
$exclusion = preg_replace( '#([^"\'?>]+?)?' . $this->content_path . '/#i', '', $exclusion );
}
$this->user_exclusions[] = ltrim( $exclusion, '/' );
}
}
}
$this->user_exclusions[] = 'plugins/anti-captcha/';
}
/**
* Get $content_width, with a filter.
*
* @return bool|string The content width, if set. Default false.
*/
function get_content_width() {
$content_width = isset( $GLOBALS['content_width'] ) && is_numeric( $GLOBALS['content_width'] ) && $GLOBALS['content_width'] > 100 ? $GLOBALS['content_width'] : 1920;
if ( function_exists( 'twentynineteen_setup' ) && 640 === (int) $content_width ) {
$content_width = 932;
}
if ( defined( 'EXACTDN_CONTENT_WIDTH' ) && EXACTDN_CONTENT_WIDTH ) {
$content_width = EXACTDN_CONTENT_WIDTH;
}
/**
* Filter the Content Width value.
*
* @param string $content_width Content Width value.
*/
return (int) apply_filters( 'exactdn_content_width', $content_width );
}
/**
* Get width within an ExactDN url.
*
* @param string $url The ExactDN url to parse.
* @return string The width, if found.
*/
public function get_exactdn_width_from_url( $url ) {
$url_args = $this->parse_url( $url, PHP_URL_QUERY );
if ( ! $url_args ) {
return '';
}
$args = explode( '&', $url_args );
foreach ( $args as $arg ) {
if ( preg_match( '#w=(\d+)#', $arg, $width_match ) ) {
return $width_match[1];
}
if ( preg_match( '#resize=(\d+)#', $arg, $width_match ) ) {
return $width_match[1];
}
if ( preg_match( '#fit=(\d+)#', $arg, $width_match ) ) {
return $width_match[1];
}
}
return '';
}
/**
* Identify images in page content, and if images are local (uploaded to the current site), pass through ExactDN.
*
* @param string $content The page/post content.
* @return string The content with ExactDN image urls.
*/
function filter_page_output( $content ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$this->filtering_the_page = true;
$content = $this->filter_the_content( $content );
/**
* Allow parsing the full page content after ExactDN is finished with it.
*
* @param string $content The fully-parsed HTML code of the page.
*/
$content = apply_filters( 'exactdn_the_page', $content );
$this->filtering_the_page = false;
$this->debug_message( "parsing page took $this->elapsed_time seconds" );
return $content;
}
/**
* Identify images in the content, and if images are local (uploaded to the current site), pass through ExactDN.
*
* @param string $content The page/post content.
* @return string The content with ExactDN image urls.
*/
function filter_the_content( $content ) {
if ( $this->is_json( $content ) ) {
return $content;
}
$started = microtime( true );
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$images = $this->get_images_from_html( $content, true );
if ( ! empty( $images ) ) {
$this->debug_message( 'we have images to parse' );
$content_width = false;
if ( ! $this->filtering_the_page ) {
$this->filtering_the_content = true;
$this->debug_message( 'filtering the content' );
$content_width = $this->get_content_width();
$this->debug_message( "configured content_width: $content_width" );
}
$resize_existing = defined( 'EXACTDN_RESIZE_EXISTING' ) && EXACTDN_RESIZE_EXISTING;
$image_sizes = $this->image_sizes();
foreach ( $images[0] as $index => $tag ) {
// Default to resize, though fit may be used in certain cases where a dimension cannot be ascertained.
$transform = 'resize';
// Start with a clean slate each time.
$attachment_id = false;
$exactdn_url = false;
$width = false;
$lazy = false;
$srcset_fill = false;
// Flag if we need to munge a fullsize URL.
$fullsize_url = false;
// Identify image source.
$src = $images['img_url'][ $index ];
$src_orig = $images['img_url'][ $index ];
if ( is_string( $src ) ) {
$this->debug_message( $src );
} else {
$this->debug_message( '$src is not a string?' );
}
/**
* Allow specific images to be skipped by ExactDN.
*
* @param bool false Should ExactDN ignore this image. Default false.
* @param string $src Image URL.
* @param string $tag Image HTML Tag.
*/
if ( apply_filters( 'exactdn_skip_image', false, $src, $tag ) ) {
continue;
}
$this->debug_message( 'made it passed the filters' );
// Log 0-size Pinterest schema images.
if ( strpos( $tag, 'data-pin-description=' ) && strpos( $tag, 'width="0" height="0"' ) ) {
$this->debug_message( 'data-pin/Pinterest image' );
}
// Pre-empt srcset fill if the surrounding link has a background image or if there is a data-desktop attribute indicating a potential slider.
if ( strpos( $tag, 'background-image:' ) || strpos( $tag, 'data-desktop=' ) ) {
$srcset_fill = false;
}
/**
* Documented in generate_url, in this case used to detect images that should bypass srcset fill.
*
* @param array|string $args Array of ExactDN arguments.
* @param string $image_url Image URL.
* @param string|null $scheme Image scheme. Default to null.
*/
$args = apply_filters( 'exactdn_pre_args', array( 'test' => 'lazy-test' ), $src, null );
if ( empty( $args ) ) {
$srcset_fill = false;
}
// Support Lazy Load plugins.
// Don't modify $tag yet as we need unmodified version later.
$lazy_load_src = $this->get_attribute( $images['img_tag'][ $index ], 'data-lazy-src' );
if ( $lazy_load_src ) {
$placeholder_src = $src;
$placeholder_src_orig = $src;
$src = $lazy_load_src;
$src_orig = $lazy_load_src;
$this->srcset_attr = 'data-lazy-srcset';
$lazy = true;
$srcset_fill = true;
}
// Must be a legacy Jetpack thing as far as I can tell, no matches found in any currently installed plugins.
$lazy_load_src = $this->get_attribute( $images['img_tag'][ $index ], 'data-lazy-original' );
if ( ! $lazy && $lazy_load_src ) {
$placeholder_src = $src;
$placeholder_src_orig = $src;
$src = $lazy_load_src;
$src_orig = $lazy_load_src;
$lazy = true;
}
if ( ! $lazy && strpos( $images['img_tag'][ $index ], 'a3-lazy-load/assets/images/lazy_placeholder' ) ) {
$lazy_load_src = $this->get_attribute( $images['img_tag'][ $index ], 'data-src' );
}
if (
! $lazy &&
strpos( $images['img_tag'][ $index ], ' data-src=' ) &&
strpos( $images['img_tag'][ $index ], 'lazyload' ) &&
(
strpos( $images['img_tag'][ $index ], 'data:image/gif' ) ||
strpos( $images['img_tag'][ $index ], 'data:image/svg' )
)
) {
$lazy_load_src = $this->get_attribute( $images['img_tag'][ $index ], 'data-src' );
$this->debug_message( "found eio ll src: $lazy_load_src" );
}
if ( ! $lazy && $lazy_load_src ) {
$placeholder_src = $src;
$placeholder_src_orig = $src;
$src = $lazy_load_src;
$src_orig = $lazy_load_src;
$this->srcset_attr = 'data-srcset';
$lazy = true;
$srcset_fill = true;
}
if ( ! $lazy && strpos( $images['img_tag'][ $index ], 'revslider/admin/assets/images/dummy' ) ) {
$lazy_load_src = $this->get_attribute( $images['img_tag'][ $index ], 'data-lazyload' );
}
if ( ! $lazy && $lazy_load_src ) {
$placeholder_src = $src;
$placeholder_src_orig = $src;
$src = $lazy_load_src;
$src_orig = $lazy_load_src;
$lazy = true;
}
if ( $lazy ) {
$this->debug_message( 'handling lazy image' );
}
$is_relative = false;
// Check for relative URLs that start with a slash.
if (
'/' === substr( $src, 0, 1 ) &&
'/' !== substr( $src, 1, 1 ) &&
false === strpos( $this->upload_domain, 'amazonaws.com' ) &&
false === strpos( $this->upload_domain, 'digitaloceanspaces.com' ) &&
false === strpos( $this->upload_domain, 'storage.googleapis.com' )
) {
$src = '//' . $this->upload_domain . $src;
$is_relative = true;
}
// Check if image URL should be used with ExactDN.
if ( $this->validate_image_url( $src ) ) {
$this->debug_message( 'url validated' );
// Find the width and height attributes.
$width = $this->get_attribute( $images['img_tag'][ $index ], 'width' );
$height = $this->get_attribute( $images['img_tag'][ $index ], 'height' );
// Can't pass both a relative width and height, so unset the dimensions in favor of not breaking the horizontal layout.
if ( false !== strpos( $width, '%' ) ) {
$width = false;
}
if ( false !== strpos( $height, '%' ) ) {
$height = false;
}
// Falsify them if empty.
$width = $width && is_numeric( $width ) ? $width : false;
$height = $height && is_numeric( $height ) ? $height : false;
// Get width/height attributes from the URL/file if they are missing.
$insert_dimensions = false;
if ( apply_filters( 'eio_add_missing_width_height_attrs', $this->get_option( $this->prefix . 'add_missing_dims' ) ) && ( empty( $width ) || empty( $height ) ) ) {
$this->debug_message( 'missing width attr or height attr' );
$insert_dimensions = true;
}
// See if there is a width/height set in the style attribute.
$style_width = $this->get_img_style_width( $images['img_tag'][ $index ] );
$style_height = $this->get_img_style_height( $images['img_tag'][ $index ] );
if ( $style_width && $style_height ) {
$width = min( $style_width, $width );
$height = min( $style_height, $height );
} elseif ( $style_width && $style_width < $width ) {
$width = $style_width;
$transform = 'fit';
} elseif ( $style_height && $style_height < $height ) {
$height = $style_height;
$transform = 'fit';
}
// Detect WP registered image size from HTML class.
if ( preg_match( '#class=["|\']?[^"\']*size-([^"\'\s]+)[^"\']*["|\']?#i', $images['img_tag'][ $index ], $size ) ) {
$size = array_pop( $size );
$this->debug_message( "detected $size" );
if ( false === $width && false === $height && 'full' !== $size && array_key_exists( $size, $image_sizes ) ) {
$width = (int) $image_sizes[ $size ]['width'];
$height = (int) $image_sizes[ $size ]['height'];
$transform = $image_sizes[ $size ]['crop'] ? 'resize' : 'fit';
}
} else {
unset( $size );
}
list( $filename_width, $filename_height ) = $this->get_dimensions_from_filename( $src );
if ( false === $width && false === $height ) {
$width = $filename_width;
$height = $filename_height;
}
// WP Attachment ID, if uploaded to this site.
$attachment_id = $this->get_attribute( $images['img_tag'][ $index ], 'data-id' );
if ( empty( $attachment_id ) ) {
$this->debug_message( 'data-id not found, looking for wp-image-x in class' );
preg_match( '#class=["|\']?[^"\']*wp-image-([\d]+)[^"\']*["|\']?#i', $images['img_tag'][ $index ], $attachment_id );
}
if ( ! $this->get_option( 'exactdn_prevent_db_queries' ) && empty( $attachment_id ) ) {
$this->debug_message( 'looking for attachment id' );
$attachment_id = attachment_url_to_postid( $src );
}
if ( ! $this->get_option( 'exactdn_prevent_db_queries' ) && ! empty( $attachment_id ) ) {
if ( is_array( $attachment_id ) ) {
$attachment_id = intval( array_pop( $attachment_id ) );
}
$this->debug_message( "using attachment id ($attachment_id) to get source image" );
if ( $attachment_id ) {
$this->debug_message( "detected attachment $attachment_id" );
$attachment = get_post( $attachment_id );
// Basic check on returned post object.
if ( is_object( $attachment ) && ! is_wp_error( $attachment ) && 'attachment' === $attachment->post_type ) {
$src_per_wp = wp_get_attachment_image_src( $attachment_id, 'full' );
if ( $src_per_wp && is_array( $src_per_wp ) ) {
$this->debug_message( "src retrieved from db: {$src_per_wp[0]}, checking for match" );
$fullsize_url_path = $this->parse_url( $src_per_wp[0], PHP_URL_PATH );
if ( is_null( $fullsize_url_path ) ) {
$src_per_wp = false;
} elseif ( $fullsize_url_path ) {
$fullsize_url_basename = pathinfo( $fullsize_url_path, PATHINFO_FILENAME );
$this->debug_message( "looking for $fullsize_url_basename in $src" );
if ( strpos( wp_basename( $src ), $fullsize_url_basename ) === false ) {
$this->debug_message( 'fullsize url does not match' );
$src_per_wp = false;
}
} else {
$src_per_wp = false;
}
}
if ( $src_per_wp && $this->validate_image_url( $src_per_wp[0] ) ) {
$this->debug_message( "detected $width filenamew $filename_width" );
if ( $resize_existing || ( $width && (int) $filename_width !== (int) $width ) ) {
$this->debug_message( 'resizing existing or width does not match' );
$src = $src_per_wp[0];
}
$fullsize_url = true;
// Prevent image distortion if a detected dimension exceeds the image's natural dimensions.
if ( ( false !== $width && $width > $src_per_wp[1] ) || ( false !== $height && $height > $src_per_wp[2] ) ) {
$width = false === $width ? false : min( $width, $src_per_wp[1] );
$height = false === $height ? false : min( $height, $src_per_wp[2] );
$this->debug_message( "constrained to attachment dims, w=$width and h=$height" );
}
// If no width and height are found, max out at source image's natural dimensions.
// Otherwise, respect registered image sizes' cropping setting.
if ( false === $width && false === $height ) {
$width = $src_per_wp[1];
$height = $src_per_wp[2];
$transform = 'fit';
$this->debug_message( "no dims, using attachment dims, w=$width and h=$height" );
} elseif ( isset( $size ) && array_key_exists( $size, $image_sizes ) && isset( $image_sizes[ $size ]['crop'] ) ) {
$transform = (bool) $image_sizes[ $size ]['crop'] ? 'resize' : 'fit';
$this->debug_message( 'attachment size set to crop' );
}
}
} else {
unset( $attachment_id );
unset( $attachment );
}
}
}
$constrain_width = (int) $content_width;
if ( ! empty( $images['figure_class'][ $index ] ) && false !== strpos( $images['figure_class'][ $index ], 'alignfull' ) && current_theme_supports( 'align-wide' ) ) {
$constrain_width = (int) apply_filters( 'exactdn_full_align_image_width', max( 1920, $content_width ) );
} elseif ( ! empty( $images['figure_class'][ $index ] ) && false !== strpos( $images['figure_class'][ $index ], 'alignwide' ) && current_theme_supports( 'align-wide' ) ) {
$constrain_width = (int) apply_filters( 'exactdn_wide_align_image_width', max( 1500, $content_width ) );
}
if ( ! empty( $images['div_class'][ $index ] ) && false !== strpos( $images['div_class'][ $index ], 'alignfull' ) && current_theme_supports( 'align-wide' ) ) {
$constrain_width = (int) apply_filters( 'exactdn_full_align_image_width', max( 1920, $content_width ) );
} elseif ( ! empty( $images['div_class'][ $index ] ) && false !== strpos( $images['div_class'][ $index ], 'alignwide' ) && current_theme_supports( 'align-wide' ) ) {
$constrain_width = (int) apply_filters( 'exactdn_wide_align_image_width', max( 1500, $content_width ) );
}
// If width is available, constrain to $content_width.
if ( false !== $width && false === strpos( $width, '%' ) && is_numeric( $constrain_width ) ) {
if ( $width > $constrain_width && false !== $height && false === strpos( $height, '%' ) ) {
$this->debug_message( 'constraining to content width' );
$height = round( ( $constrain_width * $height ) / $width );
$width = $constrain_width;
} elseif ( $width > $constrain_width ) {
$this->debug_message( 'constraining to content width' );
$width = $constrain_width;
}
}
// Set a width if none is found and $content_width is available.
// If width is set in this manner and height is available, use `fit` instead of `resize` to prevent skewing.
if ( false === $width && is_numeric( $constrain_width ) ) {
$width = (int) $constrain_width;
if ( false !== $height ) {
$transform = 'fit';
}
}
// Override fit by class/id/attr 'img-crop'.
if ( 'fit' === $transform && strpos( $images['img_tag'][ $index ], 'img-crop' ) ) {
$transform = 'resize';
}
// Detect if image source is for a custom-cropped thumbnail and prevent further URL manipulation.
if ( ! $fullsize_url && preg_match_all( '#-e[a-z0-9]+(-\d+x\d+)?\.(' . implode( '|', $this->extensions ) . '){1}$#i', wp_basename( $src ), $filename ) ) {
$fullsize_url = true;
}
// Build array of ExactDN args and expose to filter before passing to ExactDN URL function.
$args = array();
if ( false !== $width && false !== $height && false === strpos( $width, '%' ) && false === strpos( $height, '%' ) ) {
$args[ $transform ] = $width . ',' . $height;
} elseif ( false !== $width ) {
$args['w'] = $width;
} elseif ( false !== $height ) {
$args['h'] = $height;
}
if ( ! $resize_existing && ( ! $width || (int) $filename_width === (int) $width ) ) {
$this->debug_message( 'preventing resize' );
$args = array();
} elseif ( ! $fullsize_url ) {
// Build URL, first maybe removing WP's resized string so we pass the original image to ExactDN (for higher quality).
$src = $this->strip_image_dimensions_maybe( $src );
}
if ( ! $this->get_option( 'exactdn_prevent_db_queries' ) && ! empty( $attachment_id ) ) {
$this->debug_message( 'using attachment id to check smart crop' );
$args = $this->maybe_smart_crop( $args, $attachment_id );
}
/**
* Filter the array of ExactDN arguments added to an image.
* By default, only includes width and height values.
*
* @param array $args Array of ExactDN Arguments.
* @param array $args {
* Array of image details.
*
* @type $tag Image tag (Image HTML output).
* @type $src Image URL.
* @type $src_orig Original Image URL.
* @type $width Image width.
* @type $height Image height.
* }
*/
$args = apply_filters( 'exactdn_post_image_args', $args, compact( 'tag', 'src', 'src_orig', 'width', 'height' ) );
$this->debug_message( "width $width" );
$this->debug_message( "height $height" );
$this->debug_message( "transform $transform" );
$exactdn_url = $this->generate_url( $src, $args );
$this->debug_message( "new url $exactdn_url" );
// Modify image tag if ExactDN function provides a URL
// Ensure changes are only applied to the current image by copying and modifying the matched tag, then replacing the entire tag with our modified version.
if ( $src !== $exactdn_url ) {
$new_tag = $tag;
// If present, replace the link href with an ExactDN URL for the full-size image.
if ( defined( 'EIO_PRESERVE_LINKED_IMAGES' ) && EIO_PRESERVE_LINKED_IMAGES && ! empty( $images['link_url'][ $index ] ) && $this->validate_image_url( $images['link_url'][ $index ] ) ) {
$new_tag = preg_replace(
'#(href=["|\'])' . $images['link_url'][ $index ] . '(["|\'])#i',
'\1' . $this->generate_url(
$images['link_url'][ $index ],
array(
'lossy' => 0,
'strip' => 'none',
)
) . '\2',
$new_tag,
1
);
} elseif ( ! empty( $images['link_url'][ $index ] ) && $this->validate_image_url( $images['link_url'][ $index ] ) ) {
$new_tag = preg_replace(
'#(href=["|\'])' . $images['link_url'][ $index ] . '(["|\'])#i',
'\1' . $this->generate_url( $images['link_url'][ $index ] ) . '\2',
$new_tag,
1
);
}
$srcset_url = false;
// Insert new image src into the srcset as well, if we have a width.
if ( false !== $width && false === strpos( $width, '%' ) && $width ) {
$srcset_url = $exactdn_url . ' ' . (int) $width . 'w, ';
}
$srcset_attr = $this->get_attribute( $new_tag, $this->srcset_attr );
if ( $srcset_attr ) {
$new_srcset_attr = $srcset_attr;
if ( $srcset_url && false === strpos( $srcset_attr, ' ' . (int) $width . 'w' ) && ! preg_match( '/\s(1|2|3)x/', $srcset_attr ) ) {
$this->debug_message( 'src not in srcset, adding' );
$new_srcset_attr = $srcset_url . $new_srcset_attr;
}
$new_srcset_attr = $this->srcset_replace( $new_srcset_attr );
if ( $new_srcset_attr && $new_srcset_attr !== $srcset_attr ) {
$this->set_attribute( $new_tag, $this->srcset_attr, $new_srcset_attr, true );
}
}
// Check if content width pushed the respimg sizes attribute too far down.
if ( ! empty( $constrain_width ) && (int) $constrain_width !== (int) $content_width ) {
$sizes_attr = $this->get_attribute( $new_tag, 'sizes' );
$new_sizes_attr = str_replace( ' ' . $content_width . 'px', ' ' . $constrain_width . 'px', $sizes_attr );
if ( $sizes_attr !== $new_sizes_attr ) {
$new_tag = str_replace( $sizes_attr, $new_sizes_attr, $new_tag );
}
}
// Cleanup ExactDN URL.
$exactdn_url = str_replace( '&', '&', esc_url( $exactdn_url ) );
// Supplant the original source value with our ExactDN URL.
$this->debug_message( "replacing $src_orig with $exactdn_url" );
if ( $is_relative ) {
$this->set_attribute( $new_tag, 'src', $exactdn_url, true );
} else {
$new_tag = str_replace( $src_orig, $exactdn_url, $new_tag );
}
// If Lazy Load is in use, pass placeholder image through ExactDN.
if ( isset( $placeholder_src ) && $this->validate_image_url( $placeholder_src ) ) {
$placeholder_src = $this->generate_url( $placeholder_src );
if ( $placeholder_src !== $placeholder_src_orig ) {
$new_tag = str_replace( $placeholder_src_orig, str_replace( '&', '&', esc_url( $placeholder_src ) ), $new_tag );
}
unset( $placeholder_src );
}
if ( $insert_dimensions && $filename_width > 0 && $filename_height > 0 ) {
$this->debug_message( "filling in width = $filename_width and height = $filename_height" );
$this->set_attribute( $new_tag, 'width', $filename_width, true );
$this->set_attribute( $new_tag, 'height', $filename_height, true );
}
// Replace original tag with modified version.
$content = str_replace( $tag, $new_tag, $content );
}
} elseif ( ! $lazy && $this->validate_image_url( $src, true ) ) {
$this->debug_message( "found a potential exactdn src url to wrangle, and maybe insert into srcset: $src" );
$args = array();
$new_tag = $tag;
$width = $this->get_attribute( $images['img_tag'][ $index ], 'width' );
$height = $this->get_attribute( $images['img_tag'][ $index ], 'height' );
// Making sure the width/height are numeric.
if ( false === strpos( $new_tag, 'srcset' ) && strpos( $src, '?' ) && (int) $width > 2 && (int) $height > 2 ) {
$url_params = urldecode( $this->parse_url( $src, PHP_URL_QUERY ) );
if ( $url_params && false !== strpos( $url_params, 'resize=' ) ) {
$this->debug_message( 'existing resize param' );
} elseif ( $url_params && false !== strpos( $url_params, 'fit=' ) ) {
$this->debug_message( 'existing fit param' );
} elseif ( $url_params && false === strpos( $url_params, 'w=' ) && false === strpos( $url_params, 'h=' ) && false === strpos( $url_params, 'crop=' ) ) {
$this->debug_message( 'no size params, so add the width/height' );
$args = array();
$transform = 'fit';
// Or optionally as crop/resize.
if ( strpos( $new_tag, 'img-crop' ) ) {
$transform = 'resize';
}
$args[ $transform ] = $width . ',' . $height;
}
}
if ( $args ) {
$args = apply_filters( 'exactdn_post_image_args', $args, compact( 'new_tag', 'src', 'src', 'width', 'height' ) );
$new_src = $this->generate_url( $src, $args );
if ( $new_src && $src !== $new_src ) {
$new_tag = str_replace( $src, $new_src, $new_tag );
}
}
$srcset_url = false;
if ( $width ) {
$this->debug_message( 'found the width' );
// Insert new image src into the srcset as well, if we have a width.
if (
false !== $width &&
false === strpos( $width, '%' ) &&
false !== strpos( $src, $width ) &&
false !== strpos( $src, $this->exactdn_domain )
) {
$exactdn_url = $src;
$srcset_url = $exactdn_url . ' ' . (int) $width . 'w, ';
}
}
$srcset_attr = $this->get_attribute( $new_tag, $this->srcset_attr );
if ( $srcset_attr ) {
$new_srcset_attr = $srcset_attr;
if ( $srcset_url && false === strpos( $srcset_attr, ' ' . (int) $width . 'w' ) && ! preg_match( '/\s(1|2|3)x/', $srcset_attr ) ) {
$this->debug_message( 'src not in srcset, adding' );
$new_srcset_attr = $srcset_url . $new_srcset_attr;
}
$new_srcset_attr = $this->srcset_replace( $new_srcset_attr );
if ( $new_srcset_attr && $new_srcset_attr !== $srcset_attr ) {
$this->set_attribute( $new_tag, $this->srcset_attr, $new_srcset_attr, true );
}
}
if ( $new_tag && $new_tag !== $tag ) {
// Replace original tag with modified version.
$content = str_replace( $tag, $new_tag, $content );
}
} elseif ( $lazy && ! empty( $placeholder_src ) && $this->validate_image_url( $placeholder_src ) ) {
$this->debug_message( "parsing $placeholder_src for $src" );
$new_tag = $tag;
// If Lazy Load is in use, pass placeholder image through ExactDN.
$placeholder_src = $this->generate_url( $placeholder_src );
if ( $placeholder_src !== $placeholder_src_orig ) {
$new_tag = str_replace( $placeholder_src_orig, str_replace( '&', '&', esc_url( $placeholder_src ) ), $new_tag );
// Replace original tag with modified version.
$content = str_replace( $tag, $new_tag, $content );
}
unset( $placeholder_src );
} else {
$this->debug_message( "unparsed $src, srcset fill coming up" );
} // End if().
// At this point, we discard the original src in favor of the ExactDN url.
if ( ! empty( $exactdn_url ) ) {
$src = $exactdn_url;
}
// This is disabled by default, not much reason to do this with the lazy loader auto-scaling.
if ( ! is_feed() && $srcset_fill && defined( 'EIO_SRCSET_FILL' ) && EIO_SRCSET_FILL && false !== strpos( $src, $this->exactdn_domain ) ) {
if ( ! $this->get_attribute( $images['img_tag'][ $index ], $this->srcset_attr ) && ! $this->get_attribute( $images['img_tag'][ $index ], 'sizes' ) ) {
$this->debug_message( "srcset filling with $src" );
$zoom = false;
// If $width is empty, we'll search the url for a width param, then we try searching the img element, with fall back to the filename.
if ( empty( $width ) || ! is_numeric( $width ) ) {
// This only searches for w, resize, or fit flags, others are ignored.
$width = $this->get_exactdn_width_from_url( $src );
if ( $width ) {
$zoom = true;
}
}
$width_attr = $this->get_attribute( $images['img_tag'][ $index ], 'width' );
// Get width/height attributes from the URL/file if they are missing.
$insert_dimensions = false;
if ( apply_filters( 'eio_add_missing_width_height_attrs', $this->get_option( $this->prefix . 'add_missing_dims' ) ) && empty( $width_attr ) ) {
$this->debug_message( 'missing width attr or height attr' );
$insert_dimensions = true;
}
if ( empty( $width ) || ! is_numeric( $width ) ) {
$width = $width_attr;
}
list( $filename_width, $filename_height ) = $this->get_dimensions_from_filename( $src );
if ( empty( $width ) || ! is_numeric( $width ) ) {
$width = $filename_width;
}
if ( empty( $width ) || ! is_numeric( $width ) ) {
$width = $this->get_attribute( $images['img_tag'][ $index ], 'data-actual-width' );
}
if ( false !== strpos( $src, 'crop=' ) || false !== strpos( $src, '&h=' ) || false !== strpos( $src, '?h=' ) ) {
$width = false;
}
$new_tag = $images['img_tag'][ $index ];
// Then add a srcset and sizes.
if ( $width ) {
$srcset = $this->generate_image_srcset( $src, $width, $zoom, $filename_width );
if ( $srcset ) {
$this->set_attribute( $new_tag, $this->srcset_attr, $srcset );
$this->set_attribute( $new_tag, 'sizes', sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $width ) );
}
}
if ( $insert_dimensions && $filename_width > 0 && $filename_height > 0 ) {
$this->debug_message( "filling in width = $filename_width and height = $filename_height" );
$this->set_attribute( $new_tag, 'width', $filename_width, true );
$this->set_attribute( $new_tag, 'height', $filename_height, true );
}
if ( $new_tag !== $images['img_tag'][ $index ] ) {
// Replace original tag with modified version.
$content = str_replace( $images['img_tag'][ $index ], $new_tag, $content );
}
}
}
} // End foreach().
} // End if();
// Process <a> elements in the page for image URLs.
$content = $this->filter_image_links( $content );
// Process <picture> elements in the page.
$content = $this->filter_picture_images( $content );
// Process background images on HTML elements.
$element_types = apply_filters( 'eio_allowed_background_image_elements', array( 'div', 'li', 'span', 'section', 'a' ) );
foreach ( $element_types as $element_type ) {
$content = $this->filter_bg_images( $content, $element_type );
}
if ( $this->filtering_the_page ) {
$content = $this->filter_prz_thumb( $content );
}
if ( $this->filtering_the_page ) {
$content = $this->filter_style_blocks( $content );
}
if ( $this->filtering_the_page && $this->get_option( 'exactdn_all_the_things' ) ) {
$this->debug_message( 'rewriting all other wp-content/wp-includes urls' );
$content = $this->filter_all_the_things( $content );
}
$this->debug_message( 'done parsing page' );
$this->filtering_the_content = false;
$elapsed_time = microtime( true ) - $started;
$this->debug_message( "parsing the_content took $elapsed_time seconds" );
$this->elapsed_time += microtime( true ) - $started;
$this->debug_message( "parsing the page took $this->elapsed_time seconds so far" );
if ( ! $this->get_option( 'exactdn_prevent_db_queries' ) && $this->elapsed_time > .5 ) {
$this->set_option( 'exactdn_prevent_db_queries', true );
}
if ( $this->filtering_the_page && $this->get_option( $this->prefix . 'debug' ) && 0 !== strpos( $content, '{' ) && false === strpos( '$content', '<loc>' ) ) {
$content .= '<!-- Easy IO processing time: ' . $this->elapsed_time . ' seconds -->';
}
return $content;
}
/**
* Parse the HTML for a/link elements to rewrite.
*
* @param string $content The HTML content to parse.
* @return string The filtered HTML content.
*/
function filter_image_links( $content ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$elements = $this->get_elements_from_html( $content, 'a' );
if ( $this->is_iterable( $elements ) ) {
$args = array();
if ( defined( 'EIO_PRESERVE_LINKED_IMAGES' ) && EIO_PRESERVE_LINKED_IMAGES ) {
$args = array(
'lossy' => 0,
'strip' => 'none',
);
}
foreach ( $elements as $index => $element ) {
if ( false === strpos( $element, 'href' ) ) {
continue;
}
$this->debug_message( 'parsing a link for hrefs' );
$link_url = $this->get_attribute( $element, 'href' );
if ( empty( $link_url ) ) {
continue;
}
/** This filter is already documented in class-exactdn.php */
if ( apply_filters( 'exactdn_skip_image', false, $link_url, $element ) ) {
continue;
}
$full_link_url = $link_url;
// Check for relative URLs that start with a slash.
if (
'/' === substr( $link_url, 0, 1 ) &&
'/' !== substr( $link_url, 1, 1 ) &&
false === strpos( $this->upload_domain, 'amazonaws.com' ) &&
false === strpos( $this->upload_domain, 'digitaloceanspaces.com' ) &&
false === strpos( $this->upload_domain, 'storage.googleapis.com' )
) {
$full_link_url = '//' . $this->upload_domain . $link_url;
}
if ( $this->validate_image_url( $full_link_url ) ) {
$exactdn_url = $this->generate_url( $full_link_url, $args );
if ( $exactdn_url && $exactdn_url !== $link_url && false !== strpos( $exactdn_url, $this->exactdn_domain ) ) {
$this->debug_message( 'updating link URL in element' );
$element = str_replace( $link_url, $exactdn_url, $element );
if ( $element && $element !== $elements[ $index ] ) {
$this->debug_message( 'updating link element in content' );
$content = str_replace( $elements[ $index ], $element, $content );
}
}
}
}
}
return $content;
}
/**
* Parse page content for picture elements to rewrite.
*
* @param string $content The HTML content to parse.
* @return string The filtered HTML content.
*/
function filter_picture_images( $content ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( false === strpos( $content, '<picture' ) ) {
$this->debug_message( 'no picture elements, done' );
return $content;
}
// Images listed as picture/source elements.
$pictures = $this->get_picture_tags_from_html( $content );
if ( $this->is_iterable( $pictures ) ) {
foreach ( $pictures as $index => $picture ) {
$sources = $this->get_elements_from_html( $picture, 'source' );
if ( $this->is_iterable( $sources ) ) {
foreach ( $sources as $source ) {
$this->debug_message( "parsing a picture source: $source" );
$srcset = $this->get_attribute( $source, 'srcset' );
if ( $srcset ) {
$new_srcset = $this->srcset_replace( $srcset );
if ( $new_srcset && $new_srcset !== $srcset ) {
$new_source = str_replace( $srcset, $new_srcset, $source );
$picture = str_replace( $source, $new_source, $picture );
}
}
}
if ( $picture !== $pictures[ $index ] ) {
$this->debug_message( 'rewrote source for picture element' );
$content = str_replace( $pictures[ $index ], $picture, $content );
}
}
}
}
return $content;
}
/**
* Parse page content looking for elements with CSS background-image properties.
*
* @param string $content The HTML content to parse.
* @param string $tag_type The type of HTML tag to look for.
* @return string The filtered HTML content.
*/
function filter_bg_images( $content, $tag_type ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$content_width = false;
if ( ! $this->filtering_the_page ) {
$content_width = $this->get_content_width();
}
$this->debug_message( "content width is $content_width" );
// Process background images on elements.
$elements = $this->get_elements_from_html( $content, $tag_type );
if ( $this->is_iterable( $elements ) ) {
foreach ( $elements as $index => $element ) {
$this->debug_message( "parsing a $tag_type" );
if ( false === strpos( $element, 'background:' ) && false === strpos( $element, 'background-image:' ) ) {
continue;
}
$style = $this->get_attribute( $element, 'style' );
if ( empty( $style ) ) {
continue;
}
$this->debug_message( "checking style attr for background-image: $style" );
$bg_image_url = $this->get_background_image_url( $style );
$orig_bg_url = $bg_image_url;
// Check for relative URLs that start with a slash.
if (
'/' === substr( $bg_image_url, 0, 1 ) &&
'/' !== substr( $bg_image_url, 1, 1 ) &&
false === strpos( $this->upload_domain, 'amazonaws.com' ) &&
false === strpos( $this->upload_domain, 'digitaloceanspaces.com' ) &&
false === strpos( $this->upload_domain, 'storage.googleapis.com' )
) {
$bg_image_url = '//' . $this->upload_domain . $bg_image_url;
}
if ( $this->validate_image_url( $bg_image_url ) ) {
/** This filter is already documented in class-exactdn.php */
if ( apply_filters( 'exactdn_skip_image', false, $bg_image_url, $element ) ) {
continue;
}
$args = array();
$element_class = $this->get_attribute( $element, 'class' );
if ( false !== strpos( $element_class, 'alignfull' ) && current_theme_supports( 'align-wide' ) ) {
$args['w'] = apply_filters( 'exactdn_full_align_bgimage_width', 1920, $bg_image_url );
} elseif ( false !== strpos( $element_class, 'wp-block-cover' ) && false !== strpos( $element_class, 'has-parallax' ) ) {
$args['w'] = apply_filters( 'exactdn_wp_cover_parallax_bgimage_width', 1920, $bg_image_url );
} elseif ( false !== strpos( $element_class, 'alignwide' ) && current_theme_supports( 'align-wide' ) ) {
$args['w'] = apply_filters( 'exactdn_wide_align_bgimage_width', 1500, $bg_image_url );
} elseif ( false !== strpos( $element_class, 'et_parallax_bg' ) ) {
$args['w'] = apply_filters( 'exactdn_et_parallax_bgimage_width', 1920, $bg_image_url );
} elseif ( 'div' === $tag_type && $content_width ) {
$args['w'] = apply_filters( 'exactdn_content_bgimage_width', $content_width, $bg_image_url );
}
if ( isset( $args['w'] ) && empty( $args['w'] ) ) {
unset( $args['w'] );
}
$exactdn_bg_image_url = $this->generate_url( $bg_image_url, $args );
if ( $bg_image_url !== $exactdn_bg_image_url ) {
$new_style = str_replace( $orig_bg_url, $exactdn_bg_image_url, $style );
$element = str_replace( $style, $new_style, $element );
}
}
if ( $element !== $elements[ $index ] ) {
$content = str_replace( $elements[ $index ], $element, $content );
}
}
}
return $content;
}
/**
* Parse page content looking for CSS blocks with background-image properties.
*
* @param string $content The HTML content to parse.
* @return string The filtered HTML content.
*/
function filter_style_blocks( $content ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
// Process background images on elements.
$elements = $this->get_style_tags_from_html( $content );
if ( $this->is_iterable( $elements ) ) {
foreach ( $elements as $eindex => $element ) {
$this->debug_message( 'parsing a style block, starts with: ' . str_replace( "\n", '', substr( $element, 0, 50 ) ) );
if ( false === strpos( $element, 'background:' ) && false === strpos( $element, 'background-image:' ) ) {
continue;
}
$bg_images = $this->get_background_images( $element );
if ( $this->is_iterable( $bg_images ) ) {
foreach ( $bg_images as $bindex => $bg_image ) {
$this->debug_message( "parsing a background CSS rule: $bg_image" );
$bg_image_url = $this->get_background_image_url( $bg_image );
$this->debug_message( "found potential background image url: $bg_image_url" );
if ( $this->validate_image_url( $bg_image_url ) ) {
/** This filter is already documented in class-exactdn.php */
if ( apply_filters( 'exactdn_skip_image', false, $bg_image_url, $element ) ) {
continue;
}
$exactdn_bg_image_url = $this->generate_url( $bg_image_url );
if ( $bg_image_url !== $exactdn_bg_image_url ) {
$this->debug_message( "replacing $bg_image_url with $exactdn_bg_image_url" );
$bg_image = str_replace( $bg_image_url, $exactdn_bg_image_url, $bg_image );
if ( $bg_image !== $bg_images[ $bindex ] ) {
$this->debug_message( "replacing bg url with $bg_image" );
$element = str_replace( $bg_images[ $bindex ], $bg_image, $element );
}
}
}
}
}
if ( $element !== $elements[ $eindex ] ) {
$this->debug_message( 'replacing style block' );
$content = str_replace( $elements[ $eindex ], $element, $content );
}
}
}
return $content;
}
/**
* Parse page content looking for thumburl from personalization.com.
*
* @param string $content The HTML content to parse.
* @return string The filtered HTML content.
*/
function filter_prz_thumb( $content ) {
if ( ! class_exists( 'WooCommerce' ) || false === strpos( $content, 'productDetailsForPrz' ) ) {
return $content;
}
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$prz_match = preg_match( '#productDetailsForPrz=[^<]+?thumbnailUrl:\'([^\']+?)\'[^<]+?</script>#', $content, $prz_detail_matches );
if ( $prz_match && ! empty( $prz_detail_matches[1] ) && $this->validate_image_url( $prz_detail_matches[1] ) ) {
$prz_thumb = $this->generate_url( $prz_detail_matches[1], apply_filters( 'exactdn_personalizationdotcom_thumb_args', '', $prz_detail_matches[1] ) );
if ( $prz_thumb !== $prz_detail_matches ) {
$content = str_replace( "thumbnailUrl:'{$prz_detail_matches[1]}'", "thumbnailUrl:'$prz_thumb'", $content );
}
}
return $content;
}
/**
* Parse page content looking for wp-content/wp-includes URLs to rewrite.
*
* @param string $content The HTML content to parse.
* @return string The filtered HTML content.
*/
function filter_all_the_things( $content ) {
if ( $this->exactdn_domain && $this->upload_domain && $this->content_path ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$upload_domain = $this->upload_domain;
if ( 0 === strpos( $this->upload_domain, 'www.' ) ) {
$upload_domain = substr( $this->upload_domain, 4 );
}
$escaped_upload_domain = str_replace( '.', '\.', $upload_domain );
$this->debug_message( $escaped_upload_domain );
if ( ! empty( $this->user_exclusions ) ) {
$content = preg_replace( '#(https?:)?//(?:www\.)?' . $escaped_upload_domain . '([^"\'?>]+?)?/' . $this->content_path . '/([^"\'?>]+?)?(' . implode( '|', $this->user_exclusions ) . ')#i', '$1//' . $this->upload_domain . '$2/?wpcontent-bypass?/$3$4', $content );
}
if ( strpos( $content, '<use ' ) ) {
// Pre-empt rewriting of files within <use> tags, particularly to prevent security errors for SVGs.
$this->debug_message( 'searching for use tags: #(<use.+?href=["\'])(https?:)?//(?:www\.)?' . $escaped_upload_domain . '([^"\'?>]+?)/' . $this->content_path . '/#is' );
$content = preg_replace( '#(<use\s+?(?>xlink:)?href=["\'])(https?:)?//(?>www\.)?' . $escaped_upload_domain . '([^"\'?>]+?)?/' . $this->content_path . '/#is', '$1$2//' . $this->upload_domain . '$3/?wpcontent-bypass?/', $content );
}
// Pre-empt rewriting of wp-includes and wp-content if the extension is not allowed by using a temporary placeholder.
$content = preg_replace( '#(https?:)?//(?:www\.)?' . $escaped_upload_domain . '([^"\'?>]+?)?/' . $this->content_path . '/([^"\'?>]+?)\.(htm|html|php|ashx|m4v|mov|wvm|qt|webm|ogv|mp4|m4p|mpg|mpeg|mpv)#i', '$1//' . $this->upload_domain . '$2/?wpcontent-bypass?/$3.$4', $content );
// Pre-empt partial paths that are used by JS to build other URLs.
$content = str_replace( $this->content_path . '/themes/jupiter"', '?wpcontent-bypass?/themes/jupiter"', $content );
$content = str_replace( $this->content_path . '/plugins/onesignal-free-web-push-notifications/sdk_files/"', '?wpcontent-bypass?/plugins/onesignal-free-web-push-notifications/sdk_files/"', $content );
$content = str_replace( $this->content_path . '/plugins/u-shortcodes/shortcodes/monthview/"', '?wpcontent-bypass?/plugins/u-shortcodes/shortcodes/monthview/"', $content );
if (
false !== strpos( $this->upload_domain, 'amazonaws.com' ) ||
false !== strpos( $this->upload_domain, 'digitaloceanspaces.com' ) ||
false !== strpos( $this->upload_domain, 'storage.googleapis.com' )
) {
$this->debug_message( 'searching for #(https?:)?//(?:www\.)?' . $escaped_upload_domain . $this->remove_path . '/#i and replacing with $1//' . $this->exactdn_domain . '/' );
$content = preg_replace( '#(https?:)?//(?:www\.)?' . $escaped_upload_domain . $this->remove_path . '/#i', '$1//' . $this->exactdn_domain . '/', $content );
} else {
$this->debug_message( 'searching for #(https?:)?//(?:www\.)?' . $escaped_upload_domain . '(/[^"\'?&>:/]+?)*?/(nextgen-image|' . $this->include_path . '|' . $this->content_path . ')/#i and replacing with $1//' . $this->exactdn_domain . '$2/$3/' );
$content = preg_replace( '#(https?:)?//(?:www\.)?' . $escaped_upload_domain . '(/[^"\'?&>:/]+?)*?/(nextgen-image|' . $this->include_path . '|' . $this->content_path . ')/#i', '$1//' . $this->exactdn_domain . '$2/$3/', $content );
}
$content = str_replace( '?wpcontent-bypass?', $this->content_path, $content );
}
return $content;
}
/**
* Allow resizing of images for some admin-ajax requests.
*
* @param bool $allow Will normally be false, unless already modified by another function.
* @param array $image Bunch of information about the image, but we don't care about that here.
* @return bool True if it's an allowable admin-ajax request, false for all other admin requests.
*/
function allow_admin_image_downsize( $allow, $image ) {
if ( ! wp_doing_ajax() ) {
return $allow;
}
if ( ! empty( $_REQUEST['action'] ) && 'alm_get_posts' === $_REQUEST['action'] ) { // phpcs:ignore WordPress.Security.NonceVerification
return true;
}
if ( ! empty( $_POST['action'] ) && 'eddvbugm_viewport_downloads' === $_POST['action'] ) { // phpcs:ignore WordPress.Security.NonceVerification
return true;
}
if ( ! empty( $_POST['action'] ) && 'Essential_Grid_Front_request_ajax' === $_POST['action'] ) { // phpcs:ignore WordPress.Security.NonceVerification
return true;
}
if ( ! empty( $_POST['action'] ) && 'filter_listing' === $_POST['action'] && ! empty( $_POST['layout'] ) && ! empty( $_POST['paged'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
return true;
}
if ( ! empty( $_POST['action'] ) && 'mabel-rpn-getnew-purchased-products' === $_POST['action'] ) { // phpcs:ignore WordPress.Security.NonceVerification
return true;
}
if ( ! empty( $_POST['action'] ) && 'um_activity_load_wall' === $_POST['action'] ) { // phpcs:ignore WordPress.Security.NonceVerification
return true;
}
if ( ! empty( $_POST['action'] ) && 'vc_get_vc_grid_data' === $_POST['action'] ) { // phpcs:ignore WordPress.Security.NonceVerification
return true;
}
return $allow;
}
/**
* Disable resizing of images during image_downsize().
*
* @param mixed $param Could be anything (or nothing), we just pass it along untouched.
* @return mixed Just the same value, going back out the door.
*/
function disable_image_downsize( $param = false ) {
remove_filter( 'image_downsize', array( $this, 'filter_image_downsize' ) );
add_action( 'themify_after_post_image', array( $this, 'enable_image_downsize' ) );
return $param;
}
/**
* Re-enable resizing of images during image_downsize().
*/
function enable_image_downsize() {
add_filter( 'image_downsize', array( $this, 'filter_image_downsize' ), 10, 3 );
}
/**
* Change the default for processing an array of dimensions to scaling instead of cropping.
*
* @param array $exactdn_args The ExactDN args generated by filter_image_downsize() when $size is an array.
* @return array $exactdn_args The ExactDN args, with resize (crop) changed to fit (scale).
*/
function image_downsize_scale( $exactdn_args ) {
if ( ! is_array( $exactdn_args ) ) {
return $exactdn_args;
}
if ( ! empty( $exactdn_args['resize'] ) ) {
$exactdn_args['fit'] = $exactdn_args['resize'];
unset( $exactdn_args['resize'] );
}
return $exactdn_args;
}
/**
* Filter post thumbnail image retrieval, passing images through ExactDN.
*
* @param array|bool $image Defaults to false, but may be a url if another plugin/theme has already filtered the value.
* @param int $attachment_id The ID number for the image attachment.
* @param string|array $size The name of the image size or an array of width and height. Default 'medium'.
* @uses is_admin, apply_filters, wp_get_attachment_url, this::validate_image_url, this::image_sizes, this::generate_url
* @filter image_downsize
* @return string|bool
*/
function filter_image_downsize( $image, $attachment_id, $size ) {
$started = microtime( true );
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( is_array( $attachment_id ) || is_object( $attachment_id ) ) {
return $image;
}
// Don't foul up the admin side of things, unless a plugin wants to.
if ( is_admin() &&
/**
* Provide plugins a way of running ExactDN for images in the WordPress Dashboard (wp-admin).
*
* Note: enabling this will result in ExactDN URLs added to your post content, which could make migrations across domains (and off ExactDN) a bit more challenging.
*
* @param bool false Allow ExactDN to run on the Dashboard. Default to false.
* @param array $args {
* Array of image details.
*
* @type array|bool $image Image URL or false.
* @type int $attachment_id Attachment ID of the image.
* @type array|string $size Image size. Can be a string (name of the image size, e.g. full) or an array of height and width.
* }
*/
false === apply_filters( 'exactdn_admin_allow_image_downsize', false, compact( 'image', 'attachment_id', 'size' ) )
) {
return $image;
}
/**
* Provide plugins a way of preventing ExactDN from being applied to images retrieved from WordPress Core.
*
* @param bool false Stop ExactDN from being applied to the image. Default to false.
* @param array $args {
* Array of image details.
*
* @type string|bool $image Image URL or false.
* @type int $attachment_id Attachment ID of the image.
* @type array|string $size Image size. Can be a string (name of the image size, e.g. full) or an array of height and width.
* }
*/
if ( apply_filters( 'exactdn_override_image_downsize', false, compact( 'image', 'attachment_id', 'size' ) ) ) {
return $image;
}
if ( function_exists( 'aq_resize' ) ) {
$this->debug_message( 'aq_resize detected, image_downsize filter bypassed' );
return $image;
}
// BFI Thumb integration, usually Elementor, possibly others.
if ( is_array( $size ) && ! empty( $size['bfi_thumb'] ) ) {
$this->debug_message( 'bfi_thumb detected, image_downsize filter bypassed' );
return $image;
}
if ( $this->filtering_the_content || $this->filtering_the_page ) {
$this->debug_message( 'end image_downsize early' );
return $image;
}
// Get the image URL and proceed with ExactDN replacement if successful.
$image_url = wp_get_attachment_url( $attachment_id );
/** This filter is already documented in class-exactdn.php */
if ( apply_filters( 'exactdn_skip_image', false, $image_url, null ) ) {
return $image;
}
$this->debug_message( "image_url: $image_url" );
$this->debug_message( "attachment_id: $attachment_id" );
if ( is_string( $size ) || is_int( $size ) ) {
$this->debug_message( $size );
} elseif ( is_array( $size ) ) {
foreach ( $size as $dimension ) {
$this->debug_message( 'dimension: ' . $dimension );
}
}
// Set this to true later when we know we have size meta.
$has_size_meta = false;
// To indicate whether or not we've already tried to get meta from the db.
$got_meta = false;
if ( $image_url ) {
// Check if image URL should be used with ExactDN.
if ( ! $this->validate_image_url( $image_url ) ) {
return $image;
}
$intermediate = true; // For the fourth array item returned by the image_downsize filter.
$resize_existing = defined( 'EXACTDN_RESIZE_EXISTING' ) && EXACTDN_RESIZE_EXISTING;
// If an image is requested with a size known to WordPress, use that size's settings with ExactDN.
if ( is_string( $size ) && array_key_exists( $size, $this->image_sizes() ) ) {
$image_args = $this->image_sizes();
$image_args = $image_args[ $size ];
$this->debug_message( "image args for $size: " . $this->implode( ',', $image_args ) );
$exactdn_args = array();
$image_meta = image_get_intermediate_size( $attachment_id, $size );
// 'full' is a special case: We need consistent data regardless of the requested size.
if ( 'full' === $size ) {
$image_meta = wp_get_attachment_metadata( $attachment_id );
$intermediate = false;
$got_meta = true;
} elseif ( ! $image_meta ) {
$this->debug_message( 'still do not have meta, getting it now' );
// If we still don't have any image meta at this point, it's probably from a custom thumbnail size
// for an image that was uploaded before the custom image was added to the theme. Try to determine the size manually.
$image_meta = wp_get_attachment_metadata( $attachment_id );
$got_meta = true;
if ( isset( $image_meta['width'], $image_meta['height'] ) ) {
$image_resized = image_resize_dimensions( $image_meta['width'], $image_meta['height'], $image_args['width'], $image_args['height'], $image_args['crop'] );
if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image.
$image_meta['width'] = $image_resized[6];
$image_meta['height'] = $image_resized[7];
}
}
}
if ( isset( $image_meta['width'], $image_meta['height'] ) ) {
$image_args['width'] = $image_meta['width'];
$image_args['height'] = $image_meta['height'];
global $content_width;
if ( defined( 'EXACTDN_CONTENT_WIDTH' ) && ! empty( $content_width ) ) {
$real_content_width = $content_width;
$content_width = EXACTDN_CONTENT_WIDTH;
}
// NOTE: it will constrain an image to $content_width which is expected behavior in core, so far as I can see.
list( $image_args['width'], $image_args['height'] ) = image_constrain_size_for_editor( $image_args['width'], $image_args['height'], $size, 'display' );
if ( defined( 'EXACTDN_CONTENT_WIDTH' ) && ! empty( $real_content_width ) ) {
$content_width = $real_content_width;
}
$has_size_meta = true;
$this->debug_message( 'image args constrained: ' . $this->implode( ',', $image_args ) );
}
$transform = $image_args['crop'] ? 'resize' : 'fit';
// Check specified image dimensions and account for possible zero values; ExactDN fails to resize if a dimension is zero.
if ( ! $image_args['width'] || ! $image_args['height'] ) {
if ( ! $image_args['width'] && 0 < $image_args['height'] ) {
$exactdn_args['h'] = $image_args['height'];
} elseif ( ! $image_args['height'] && 0 < $image_args['width'] ) {
$exactdn_args['w'] = $image_args['width'];
}
} else {
if ( ! isset( $image_meta['sizes'] ) && empty( $got_meta ) ) {
$size_meta = $image_meta;
// Because we don't have the "real" meta, just the height/width for the specific size.
$this->debug_message( 'getting attachment meta now' );
$image_meta = wp_get_attachment_metadata( $attachment_id );
}
if ( 'resize' === $transform && $image_meta && isset( $image_meta['width'], $image_meta['height'] ) ) {
// Lets make sure that we don't upscale images since wp never upscales them as well.
$smaller_width = ( ( $image_meta['width'] < $image_args['width'] ) ? $image_meta['width'] : $image_args['width'] );
$smaller_height = ( ( $image_meta['height'] < $image_args['height'] ) ? $image_meta['height'] : $image_args['height'] );
$exactdn_args[ $transform ] = $smaller_width . ',' . $smaller_height;
} else {
$exactdn_args[ $transform ] = $image_args['width'] . ',' . $image_args['height'];
}
}
if (
! empty( $image_meta['sizes'] ) && ! empty( $image_meta['width'] ) && ! empty( $image_meta['height'] ) &&
(int) $image_args['width'] === (int) $image_meta['width'] &&
(int) $image_args['height'] === (int) $image_meta['height']
) {
$this->debug_message( 'image args match size of original, just use that' );
$size = 'full';
}
if ( empty( $image_meta['sizes'] ) && ! empty( $size_meta ) ) {
$image_meta['sizes'][ $size ] = $size_meta;
}
if ( ! empty( $image_meta['sizes'] ) && 'full' !== $size && ! empty( $image_meta['sizes'][ $size ]['file'] ) ) {
$image_url_basename = wp_basename( $image_url );
$intermediate_url = str_replace( $image_url_basename, $image_meta['sizes'][ $size ]['file'], $image_url );
if ( empty( $image_meta['width'] ) || empty( $image_meta['height'] ) ) {
list( $filename_width, $filename_height ) = $this->get_dimensions_from_filename( $intermediate_url );
}
$filename_width = $image_meta['width'] ? $image_meta['width'] : $filename_width;
$filename_height = $image_meta['height'] ? $image_meta['height'] : $filename_height;
if ( $filename_width && $filename_height && $image_args['width'] === $filename_width && $image_args['height'] === $filename_height ) {
$this->debug_message( "changing $image_url to $intermediate_url" );
$image_url = $intermediate_url;
} else {
$resize_existing = true;
}
} else {
$resize_existing = true;
}
$exactdn_args = $resize_existing && 'full' !== $size ? $this->maybe_smart_crop( $exactdn_args, $attachment_id, $image_meta ) : array();
/**
* Filter the ExactDN arguments added to an image, when that image size is a string.
* Image size will be a string (e.g. "full", "medium") when it is known to WordPress.
*
* @param array $exactdn_args ExactDN arguments.
* @param array $args {
* Array of image details.
*
* @type array $image_args Image arguments (width, height, crop).
* @type string $image_url Image URL.
* @type int $attachment_id Attachment ID of the image.
* @type string $size Image size name.
* @type string $transform Value can be resize or fit.
* }
*/
$exactdn_args = apply_filters( 'exactdn_image_downsize_string', $exactdn_args, compact( 'image_args', 'image_url', 'attachment_id', 'size', 'transform' ) );
// Generate ExactDN URL.
$image = array(
$this->generate_url( $image_url, $exactdn_args ),
$has_size_meta ? $image_args['width'] : false,
$has_size_meta ? $image_args['height'] : false,
$intermediate,
);
} elseif ( is_array( $size ) ) {
// Pull width and height values from the provided array, if possible.
$width = isset( $size[0] ) && $size[0] < 9999 ? (int) $size[0] : false;
$height = isset( $size[1] ) && $size[1] < 9999 ? (int) $size[1] : false;
// Don't bother if necessary parameters aren't passed.
if ( ! $width || ! $height ) {
return $image;
}
$this->debug_message( "requested w$width by h$height" );
$image_meta = wp_get_attachment_metadata( $attachment_id );
if ( isset( $image_meta['width'], $image_meta['height'] ) ) {
$image_resized = image_resize_dimensions( $image_meta['width'], $image_meta['height'], $width, $height, true );
if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image.
$width = $image_resized[6];
$height = $image_resized[7];
$this->debug_message( "using resize dims w$width by h$height" );
} else {
$width = $image_meta['width'];
$height = $image_meta['height'];
$this->debug_message( "using meta dims w$width by h$height" );
}
$has_size_meta = true;
}
global $content_width;
if ( defined( 'EXACTDN_CONTENT_WIDTH' ) && ! empty( $content_width ) ) {
$real_content_width = $content_width;
$content_width = EXACTDN_CONTENT_WIDTH;
}
list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size );
$this->debug_message( "constrained to w$width by h$height" );
if ( defined( 'EXACTDN_CONTENT_WIDTH' ) && ! empty( $real_content_width ) ) {
$content_width = $real_content_width;
}
// Expose arguments to a filter before passing to ExactDN.
$exactdn_args = array(
'resize' => $width . ',' . $height,
);
$exactdn_args = $this->maybe_smart_crop( $exactdn_args, $attachment_id, $image_meta );
/**
* Filter the ExactDN arguments added to an image, when the image size is an array of height and width values.
*
* @param array $exactdn_args ExactDN arguments/parameters.
* @param array $args {
* Array of image details.
*
* @type int $width Image width.
* @type int $height Image height.
* @type string $image_url Image URL.
* @type int $attachment_id Attachment ID of the image.
* }
*/
$exactdn_args = apply_filters( 'exactdn_image_downsize_array', $exactdn_args, compact( 'width', 'height', 'image_url', 'attachment_id' ) );
// Generate ExactDN URL.
$image = array(
$this->generate_url( $image_url, $exactdn_args ),
$has_size_meta ? $width : false,
$has_size_meta ? $height : false,
$intermediate,
);
}
}
if ( ! empty( $image[0] ) && is_string( $image[0] ) ) {
$this->debug_message( $image[0] );
}
$this->debug_message( 'end image_downsize' );
$elapsed_time = microtime( true ) - $started;
$this->debug_message( "parsing image_downsize took $elapsed_time seconds" );
$this->elapsed_time += microtime( true ) - $started;
return $image;
}
/**
* Replaces images within a srcset attribute with Easy IO URLs.
*
* @param string $srcset A valid srcset attribute from an img element.
* @return string The srcset attribute with Easy IO URLs.
*/
function srcset_replace( $srcset ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$srcset_urls = explode( ' ', $srcset );
if ( $this->is_iterable( $srcset_urls ) && count( $srcset_urls ) > 1 ) {
$this->debug_message( 'parsing srcset urls' );
foreach ( $srcset_urls as $srcurl ) {
if ( is_numeric( substr( $srcurl, 0, 1 ) ) ) {
continue;
}
$trailing = ' ';
if ( ',' === substr( $srcurl, -1 ) ) {
$trailing = ',';
$srcurl = rtrim( $srcurl, ',' );
}
$this->debug_message( "looking for $srcurl from srcset" );
$new_srcurl = $srcurl;
// Check for relative URLs that start with a slash.
if (
'/' === substr( $srcurl, 0, 1 ) &&
'/' !== substr( $srcurl, 1, 1 ) &&
false === strpos( $this->upload_domain, 'amazonaws.com' ) &&
false === strpos( $this->upload_domain, 'digitaloceanspaces.com' ) &&
false === strpos( $this->upload_domain, 'storage.googleapis.com' )
) {
$new_srcurl = '//' . $this->upload_domain . $new_srcurl;
}
if ( $this->validate_image_url( $new_srcurl ) ) {
$srcset = str_replace( $srcurl . $trailing, $this->generate_url( $new_srcurl ) . $trailing, $srcset );
$this->debug_message( "replaced $srcurl in srcset" );
}
}
} elseif ( $this->validate_image_url( $srcset ) ) {
return $this->generate_url( $srcset );
}
return $srcset;
}
/**
* Filters an array of image `srcset` values, replacing each URL with its ExactDN equivalent.
*
* @param array $sources An array of image urls and widths.
* @param array $size_array Array of width and height values in pixels.
* @param string $image_src The 'src' of the image.
* @param array $image_meta The image metadata as returned by 'wp_get_attachment_metadata()'.
* @param int $attachment_id Image attachment ID or 0.
* @uses this::validate_image_url, this::generate_url, this::parse_from_filename
* @uses this::strip_image_dimensions_maybe, this::get_content_width
* @return array An array of ExactDN image urls and widths.
*/
public function filter_srcset_array( $sources = array(), $size_array = array(), $image_src = '', $image_meta = array(), $attachment_id = 0 ) {
$started = microtime( true );
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
// Don't foul up the admin side of things, unless a plugin wants to.
if ( is_admin() &&
/**
* Provide plugins a way of running ExactDN for images in the WordPress Dashboard (wp-admin).
*
* @param bool false Stop ExactDN from being run on the Dashboard. Default to false, use true to run in wp-admin.
* @param array $args {
* Array of image details.
*
* @type string|bool $image Image URL or false.
* @type int $attachment_id Attachment ID of the image.
* }
*/
false === apply_filters( 'exactdn_admin_allow_image_srcset', false, compact( 'image_src', 'attachment_id' ) )
) {
return $sources;
}
if ( ! is_array( $sources ) ) {
return $sources;
}
$this->debug_message( "image_src = $image_src" );
$upload_dir = wp_get_upload_dir();
$resize_existing = defined( 'EXACTDN_RESIZE_EXISTING' ) && EXACTDN_RESIZE_EXISTING;
$w_descriptor = true;
foreach ( $sources as $i => $source ) {
if ( 'x' === $source['descriptor'] ) {
$w_descriptor = false;
}
if ( ! $this->validate_image_url( $source['url'] ) ) {
continue;
}
/** This filter is already documented in class-exactdn.php */
if ( apply_filters( 'exactdn_skip_image', false, $source['url'], $source ) ) {
continue;
}
$url = $source['url'];
list( $width, $height ) = $this->get_dimensions_from_filename( $url );
if ( ! $resize_existing && 'w' === $source['descriptor'] && (int) $source['value'] === (int) $width ) {
$this->debug_message( "preventing further processing for $url" );
$sources[ $i ]['url'] = $this->generate_url( $source['url'] );
continue;
}
if ( $image_meta && ! empty( $image_meta['width'] ) ) {
if ( ( $height && (int) $image_meta['height'] === (int) $height && $width && (int) $image_meta['width'] === (int) $width ) ||
( ! $height && ! $width && (int) $image_meta['width'] === (int) $source['value'] )
) {
$this->debug_message( "preventing further processing for (detected) full-size $url" );
$sources[ $i ]['url'] = $this->generate_url( $source['url'] );
continue;
}
}
$this->debug_message( 'continuing: ' . $width . ' vs. ' . $source['value'] );
// It's quicker to get the full size with the data we have already, if available.
if ( ! empty( $attachment_id ) ) {
$url = wp_get_attachment_url( $attachment_id );
} else {
$url = $this->strip_image_dimensions_maybe( $url );
}
$this->debug_message( "building srcs from $url" );
$args = array();
if ( 'w' === $source['descriptor'] ) {
if ( $height && ( (int) $source['value'] === (int) $width ) ) {
$args['resize'] = $width . ',' . $height;
} else {
$args['w'] = $source['value'];
}
}
$args = $this->maybe_smart_crop( $args, $attachment_id, $image_meta );
$sources[ $i ]['url'] = $this->generate_url( $url, $args );
}
/**
* At this point, $sources is the original srcset with ExactDN URLs.
* Now, we're going to construct additional sizes based on multiples of the content_width.
*/
/**
* Filter the multiplier ExactDN uses to create new srcset items.
* Return false to short-circuit and bypass auto-generation.
*
* @param array|bool $multipliers Array of multipliers to use or false to bypass.
*/
$multipliers = apply_filters( 'exactdn_srcset_multipliers', array( .2, .4, .6, .8, 1, 2, 3, 1920 ) );
$this->debug_message( "building url from {$upload_dir['baseurl']} and {$image_meta['file']}" );
$url = trailingslashit( $upload_dir['baseurl'] ) . $image_meta['file'];
if ( ! $w_descriptor ) {
$this->debug_message( 'using x descriptors instead of w' );
$multipliers = array_filter( $multipliers, 'is_int' );
}
if (
/** Short-circuit via exactdn_srcset_multipliers filter. */
is_array( $multipliers )
/** This filter is already documented in class-exactdn.php */
&& ! apply_filters( 'exactdn_skip_image', false, $url, null )
/** The original url is valid/allowed. */
&& $this->validate_image_url( $url )
/** Verify basic meta is intact. */
&& isset( $image_meta['width'] ) && isset( $image_meta['height'] ) && isset( $image_meta['file'] )
/** Verify we have the requested width/height. */
&& isset( $size_array[0] ) && isset( $size_array[1] )
) {
$fullwidth = $image_meta['width'];
$fullheight = $image_meta['height'];
$reqwidth = $size_array[0];
$reqheight = $size_array[1];
$this->debug_message( "filling additional sizes with requested w $reqwidth h $reqheight full w $fullwidth full h $fullheight" );
$constrained_size = wp_constrain_dimensions( $fullwidth, $fullheight, $reqwidth );
$expected_size = array( $reqwidth, $reqheight );
$this->debug_message( 'constrained w: ' . $constrained_size[0] );
$this->debug_message( 'constrained h: ' . $constrained_size[1] );
if ( abs( $constrained_size[0] - $expected_size[0] ) <= 1 && abs( $constrained_size[1] - $expected_size[1] ) <= 1 ) {
$this->debug_message( 'soft cropping' );
$crop = 'soft';
$base = $this->get_content_width(); // Provide a default width if none set by the theme.
} else {
$this->debug_message( 'hard cropping' );
$crop = 'hard';
$base = $reqwidth;
}
$this->debug_message( "base width: $base" );
$currentwidths = array_keys( $sources );
$newsources = null;
foreach ( $multipliers as $multiplier ) {
$newwidth = intval( $base * $multiplier );
if ( 1920 === (int) $multiplier ) {
$newwidth = 1920;
if ( ! $w_descriptor || 1920 >= $reqwidth || 'soft' !== $crop ) {
continue;
}
}
if ( $newwidth < 50 ) {
continue;
}
foreach ( $currentwidths as $currentwidth ) {
// If a new width would be within 50 pixels of an existing one or larger than the full size image, skip.
if ( abs( $currentwidth - $newwidth ) < 50 || ( $newwidth > $fullwidth ) ) {
continue 2; // Back to the foreach ( $multipliers as $multiplier ).
}
} // foreach ( $currentwidths as $currentwidth ){
if ( 1 === $multiplier && abs( $newwidth - $fullwidth ) < 5 ) {
$args = array();
} elseif ( 'soft' === $crop ) {
$args = array(
'w' => $newwidth,
);
} else { // hard crop, e.g. add_image_size( 'example', 200, 200, true ).
$args = array(
'zoom' => $multiplier,
'resize' => $reqwidth . ',' . $reqheight,
);
}
$args = $this->maybe_smart_crop( $args, $attachment_id, $image_meta );
$newsources[ $newwidth ] = array(
'url' => $this->generate_url( $url, $args ),
'descriptor' => ( $w_descriptor ? 'w' : 'x' ),
'value' => ( $w_descriptor ? $newwidth : $multiplier ),
);
$currentwidths[] = $newwidth;
} // foreach ( $multipliers as $multiplier )
if ( is_array( $newsources ) ) {
$sources = array_replace( $sources, $newsources );
}
} // if ( isset( $image_meta['width'] ) && isset( $image_meta['file'] ) )
$elapsed_time = microtime( true ) - $started;
$this->debug_message( "parsing srcset took $elapsed_time seconds" );
/* $this->debug_message( print_r( $sources, true ) ); */
$this->elapsed_time += microtime( true ) - $started;
return $sources;
}
/**
* Filters an array of image `sizes` values, using $content_width instead of image's full size.
*
* @param array $sizes An array of media query breakpoints.
* @param array $size Width and height of the image.
* @uses this::get_content_width
* @return array An array of media query breakpoints.
*/
public function filter_sizes( $sizes, $size ) {
$started = microtime( true );
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( ! doing_filter( 'the_content' ) ) {
return $sizes;
}
$content_width = $this->get_content_width();
if ( ( is_array( $size ) && $size[0] < $content_width ) ) {
return $sizes;
}
$elapsed_time = microtime( true ) - $started;
$this->debug_message( "parsing sizes took $elapsed_time seconds" );
$this->elapsed_time += microtime( true ) - $started;
return sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $content_width );
}
/**
* Creates an image `srcset` attribute based on the detected width.
*
* @param string $url The url of the image.
* @param int $width Image width to use for calculations.
* @param bool $zoom Whether to use zoom or w param.
* @param int $filename_width The width derived from the filename, or false.
* @uses this::generate_url
* @return string A srcset attribute with ExactDN image urls and widths.
*/
public function generate_image_srcset( $url, $width, $zoom = false, $filename_width = false ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
// Don't foul up the admin side of things.
if ( is_admin() ) {
return '';
}
if ( ! is_numeric( $width ) ) {
return '';
}
/**
* Filter the multiplier ExactDN uses to create new srcset items.
* Return false to short-circuit and bypass auto-generation.
*
* @param array|bool $multipliers Array of multipliers to use or false to bypass.
*/
$multipliers = apply_filters( 'exactdn_srcset_multipliers', array( .2, .4, .6, .8, 1, 2, 3, 1920 ) );
/**
* Filter the width ExactDN will use to create srcset attribute.
* Return a falsy value to short-circuit and bypass srcset fill.
*
* @param int|bool $width The max width for this $url, or false to bypass.
*/
$width = (int) apply_filters( 'exactdn_srcset_fill_width', $width, $url );
if ( ! $width ) {
return '';
}
$srcset = '';
$currentwidths = array();
if (
/** Short-circuit via exactdn_srcset_multipliers filter. */
is_array( $multipliers )
&& $width
/** This filter is already documented in class-exactdn.php */
&& ! apply_filters( 'exactdn_skip_image', false, $url, null )
) {
$sources = null;
foreach ( $multipliers as $multiplier ) {
$newwidth = intval( $width * $multiplier );
if ( 1920 === (int) $multiplier ) {
if ( $multiplier >= $width ) {
continue;
}
$newwidth = 1920;
}
if ( $newwidth < 50 ) {
continue;
}
foreach ( $currentwidths as $currentwidth ) {
// If a new width would be within 50 pixels of an existing one or larger than the full size image, skip.
if ( 1 !== $multiplier && abs( $currentwidth - $newwidth ) < 50 ) {
continue 2; // Back to the foreach ( $multipliers as $multiplier ).
}
} // foreach ( $currentwidths as $currentwidth ){
if ( $filename_width && $newwidth > $filename_width ) {
continue;
}
if ( 1 === $multiplier ) {
$args = array();
} elseif ( $zoom && $multiplier <= 10 ) {
$args = array(
'zoom' => $multiplier,
);
} else {
$args = array(
'w' => $newwidth,
);
}
$sources[ $newwidth ] = array(
'url' => $this->generate_url( $url, $args ),
'descriptor' => 'w',
'value' => $newwidth,
);
$currentwidths[] = $newwidth;
}
}
if ( ! empty( $sources ) ) {
foreach ( $sources as $source ) {
$srcset .= str_replace( ' ', '%20', $source['url'] ) . ' ' . $source['value'] . $source['descriptor'] . ', ';
}
}
/* $this->debug_message( print_r( $sources, true ) ); */
return rtrim( $srcset, ', ' );
}
/**
* Check for smart-cropping plugin to adjust cropping parameters.
* Currently supports Theia Smart Thumbnails using the theiaSmartThumbnails_position meta.
*
* @param array $args The arguments that have been generated so far.
* @param int $attachment_id The ID number for the current image.
* @param array $meta Optional. The attachment (image) metadata. Default false.
* @return array The arguments, possibly altered for smart cropping.
*/
function maybe_smart_crop( $args, $attachment_id, $meta = false ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( ! empty( $args['crop'] ) ) {
$this->debug_message( 'already cropped' );
return $args;
}
// Doing something other than a hard crop, or we don't know what the ID is.
if ( empty( $args['resize'] ) || empty( $attachment_id ) ) {
$this->debug_message( 'not resizing, so no custom crop' );
return $args;
}
// TST is not active.
if ( ! defined( 'TST_VERSION' ) && ! defined( 'THEIA_SMART_THUMBNAILS_VERSION' ) ) {
$this->debug_message( 'no TST plugin' );
return $args;
}
if ( ! $meta || ! is_array( $meta ) || empty( $meta['sizes'] ) ) {
$meta = wp_get_attachment_metadata( $attachment_id );
if ( ! is_array( $meta ) || empty( $meta ) ) {
$this->debug_message( 'unusable meta retrieved' );
return $args;
}
}
if ( ! empty( $meta['tst_thumbnail_version'] ) ) {
$args['theia_smart_thumbnails_file_version'] = (int) $meta['tst_thumbnail_version'];
return $args;
}
$this->debug_message( 'no tst version in meta' );
return $args;
}
/**
* Check if this is a REST API request that we should handle (or not).
*
* @param WP_HTTP_Response $response Result to send to the client. Usually a WP_REST_Response.
* @param WP_REST_Server $handler ResponseHandler instance (usually WP_REST_Server).
* @param WP_REST_Request $request Request used to generate the response.
* @return WP_HTTP_Response The result, unaltered.
*/
function parse_restapi_maybe( $response, $handler, $request ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( ! is_a( $request, 'WP_REST_Request' ) ) {
$this->debug_message( 'oddball REST request or handler' );
return $response; // Something isn't right, bail.
}
$route = $request->get_route();
if ( is_string( $route ) ) {
$this->debug_message( "current REST route is $route" );
}
if ( is_string( $route ) && false !== strpos( $route, 'wp/v2/media/' ) && ! empty( $request['context'] ) && 'edit' === $request['context'] ) {
$this->debug_message( 'REST API media endpoint from post editor' );
// We don't want ExactDN urls anywhere near the editor, so disable everything we can.
add_filter( 'exactdn_override_image_downsize', '__return_true', PHP_INT_MAX );
add_filter( 'exactdn_skip_image', '__return_true', PHP_INT_MAX ); // This skips existing srcset indices.
add_filter( 'exactdn_srcset_multipliers', '__return_false', PHP_INT_MAX ); // This one skips the additional multipliers.
} elseif ( is_string( $route ) && false !== strpos( $route, 'wp/v2/media' ) && ! empty( $request['post'] ) && ! empty( $request->get_file_params() ) ) {
$this->debug_message( 'REST API media endpoint (new upload)' );
// We don't want ExactDN urls anywhere near the editor, so disable everything we can.
add_filter( 'exactdn_override_image_downsize', '__return_true', PHP_INT_MAX );
add_filter( 'exactdn_skip_image', '__return_true', PHP_INT_MAX ); // This skips existing srcset indices.
add_filter( 'exactdn_srcset_multipliers', '__return_false', PHP_INT_MAX ); // This one skips the additional multipliers.
} elseif ( is_string( $route ) && false !== strpos( $route, '/ToolsetBlocks/' ) ) {
$this->debug_message( 'REST API media endpoint (ToolsetBlocks)' );
// We don't want ExactDN urls anywhere near the editor, so disable everything we can.
add_filter( 'exactdn_override_image_downsize', '__return_true', PHP_INT_MAX );
add_filter( 'exactdn_skip_image', '__return_true', PHP_INT_MAX ); // This skips existing srcset indices.
add_filter( 'exactdn_srcset_multipliers', '__return_false', PHP_INT_MAX ); // This one skips the additional multipliers.
} elseif ( is_string( $route ) && false !== strpos( $route, '/toolset-dynamic-sources/' ) ) {
$this->debug_message( 'REST API media endpoint (toolset-dynamic-sources)' );
// We don't want ExactDN urls anywhere near the editor, so disable everything we can.
add_filter( 'exactdn_override_image_downsize', '__return_true', PHP_INT_MAX );
add_filter( 'exactdn_skip_image', '__return_true', PHP_INT_MAX ); // This skips existing srcset indices.
add_filter( 'exactdn_srcset_multipliers', '__return_false', PHP_INT_MAX ); // This one skips the additional multipliers.
}
return $response;
}
/**
* Make sure the image domain is on the list of approved domains.
*
* @param string $domain The hostname to validate.
* @return bool True if the hostname is allowed, false otherwise.
*/
public function allow_image_domain( $domain ) {
$domain = trim( $domain );
foreach ( $this->allowed_domains as $allowed ) {
$allowed = trim( $allowed );
if ( $domain === $allowed ) {
return true;
}
}
return false;
}
/**
* Ensure image URL is valid for ExactDN.
* Though ExactDN functions address some of the URL issues, we should avoid unnecessary processing if we know early on that the image isn't supported.
*
* @param string $url The image url to be validated.
* @param bool $exactdn_is_valid Optional. Whether an ExactDN URL should be considered valid. Default false.
* @uses wp_parse_args
* @return bool True if the url is considerd valid, false otherwise.
*/
protected function validate_image_url( $url, $exactdn_is_valid = false ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( ! is_string( $url ) ) {
$this->debug_message( 'cannot validate uri when variable is not a string' );
return false;
}
if ( false !== strpos( $url, 'data:image/' ) ) {
$this->debug_message( "could not parse data uri: $url" );
return false;
}
$parsed_url = $this->parse_url( $url );
if ( ! $parsed_url ) {
$this->debug_message( "could not parse: $url" );
return false;
}
// Parse URL and ensure needed keys exist, since the array returned by `parse_url` only includes the URL components it finds.
$url_info = wp_parse_args(
$parsed_url,
array(
'scheme' => null,
'host' => null,
'port' => null,
'path' => null,
)
);
// Bail if scheme isn't http or port is set that isn't port 80.
if (
( 'http' !== $url_info['scheme'] || ( 80 !== (int) $url_info['port'] && ! is_null( $url_info['port'] ) ) ) &&
/**
* Tells ExactDN to ignore images that are served via HTTPS.
*
* @param bool $reject_https Should ExactDN ignore images using the HTTPS scheme. Default to false.
*/
apply_filters( 'exactdn_reject_https', false )
) {
$this->debug_message( 'rejected https via filter' );
return false;
}
// Bail if no host is found.
if ( is_null( $url_info['host'] ) ) {
$this->debug_message( 'null host' );
return false;
}
// Bail if the image already went through ExactDN.
if ( ! $exactdn_is_valid && $this->exactdn_domain === $url_info['host'] ) {
$this->debug_message( 'exactdn image' );
return false;
}
// Bail if the image already went through Photon to avoid conflicts.
if ( preg_match( '#^i[\d]{1}.wp.com$#i', $url_info['host'] ) ) {
$this->debug_message( 'photon/wp.com image' );
return false;
}
// Bail if no path is found.
if ( is_null( $url_info['path'] ) ) {
$this->debug_message( 'null path' );
return false;
}
// Ensure image extension is acceptable, unless it's a dynamic NextGEN image.
if ( ! in_array( strtolower( pathinfo( $url_info['path'], PATHINFO_EXTENSION ) ), $this->extensions, true ) && false === strpos( $url_info['path'], 'nextgen-image/' ) ) {
$this->debug_message( 'invalid extension' );
return false;
}
// Make sure this is an allowed image domain/hostname for ExactDN on this site.
if ( ! $this->allow_image_domain( $url_info['host'] ) ) {
$this->debug_message( 'invalid host for ExactDN' );
return false;
}
// If we got this far, we should have an acceptable image URL,
// but let folks filter to decline if they prefer.
/**
* Overwrite the results of the previous validation steps an image goes through to be considered valid for ExactDN.
*
* @param bool true Is the image URL valid and can it be used by ExactDN. Default to true.
* @param string $url Image URL.
* @param array $parsed_url Array of information about the image url.
*/
return apply_filters( 'exactdn_validate_image_url', true, $url, $parsed_url );
}
/**
* Checks if the file exists before it passes the file to ExactDN.
*
* @param string $src The image URL.
* @return string The possibly altered URL without dimensions.
**/
protected function strip_image_dimensions_maybe( $src ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$stripped_src = $src;
// Build URL, first removing WP's resized string so we pass the original image to ExactDN.
if ( preg_match( '#(-\d+x\d+)\.(' . implode( '|', $this->extensions ) . '){1}(?:\?.+)?$#i', $src, $src_parts ) ) {
$stripped_src = str_replace( $src_parts[1], '', $src );
$upload_dir = wp_get_upload_dir();
// Extracts the file path to the image minus the base url.
$file_path = substr( $stripped_src, strlen( $upload_dir['baseurl'] ) );
if ( is_file( $upload_dir['basedir'] . $file_path ) ) {
$src = $stripped_src;
}
$this->debug_message( 'stripped dims' );
}
return $src;
}
/**
* Provide an array of available image sizes and corresponding dimensions.
* Similar to get_intermediate_image_sizes() except that it includes image sizes' dimensions, not just their names.
*
* @global $wp_additional_image_sizes
* @uses get_option
* @return array
*/
protected function image_sizes() {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( is_null( self::$image_sizes ) ) {
global $_wp_additional_image_sizes;
// Populate an array matching the data structure of $_wp_additional_image_sizes so we have a consistent structure for image sizes.
$images = array(
'thumb' => array(
'width' => intval( get_option( 'thumbnail_size_w' ) ),
'height' => intval( get_option( 'thumbnail_size_h' ) ),
'crop' => (bool) get_option( 'thumbnail_crop' ),
),
'medium' => array(
'width' => intval( get_option( 'medium_size_w' ) ),
'height' => intval( get_option( 'medium_size_h' ) ),
'crop' => false,
),
'large' => array(
'width' => intval( get_option( 'large_size_w' ) ),
'height' => intval( get_option( 'large_size_h' ) ),
'crop' => false,
),
'full' => array(
'width' => null,
'height' => null,
'crop' => false,
),
);
// Compatibility mapping as found in wp-includes/media.php.
$images['thumbnail'] = $images['thumb'];
// Update class variable, merging in $_wp_additional_image_sizes if any are set.
if ( is_array( $_wp_additional_image_sizes ) && ! empty( $_wp_additional_image_sizes ) ) {
self::$image_sizes = array_merge( $images, $_wp_additional_image_sizes );
} else {
self::$image_sizes = $images;
}
}
return is_array( self::$image_sizes ) ? self::$image_sizes : array();
}
/**
* Handle image urls within the NextGEN pro lightbox displays.
*
* @param array $images An array of NextGEN images and associated attributes.
* @return array The ExactDNified array of images.
*/
function ngg_pro_lightbox_images_queue( $images ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( $this->is_iterable( $images ) ) {
foreach ( $images as $index => $image ) {
if ( ! empty( $image['image'] ) && $this->validate_image_url( $image['image'] ) ) {
$images[ $index ]['image'] = $this->generate_url( $image['image'] );
}
if ( ! empty( $image['thumb'] ) && $this->validate_image_url( $image['thumb'] ) ) {
$images[ $index ]['thumb'] = $this->generate_url( $image['thumb'] );
}
if ( ! empty( $image['full_image'] ) && $this->validate_image_url( $image['full_image'] ) ) {
$images[ $index ]['full_image'] = $this->generate_url( $image['full_image'] );
}
if ( $this->is_iterable( $image['srcsets'] ) ) {
foreach ( $image['srcsets'] as $size => $srcset ) {
if ( $this->validate_image_url( $srcset ) ) {
$images[ $index ]['srcsets'][ $size ] = $this->generate_url( $srcset );
}
}
}
if ( $this->is_iterable( $image['full_srcsets'] ) ) {
foreach ( $image['full_srcsets'] as $size => $srcset ) {
if ( $this->validate_image_url( $srcset ) ) {
$images[ $index ]['full_srcsets'][ $size ] = $this->generate_url( $srcset );
}
}
}
}
}
return $images;
}
/**
* Handle image urls within the Envira pro displays.
*
* @param array $image An Envira gallery image with associated attributes.
* @return array The ExactDNified array of data.
*/
function envira_gallery_output_item_data( $image ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( $this->is_iterable( $image ) ) {
foreach ( $image as $index => $attr ) {
if ( is_string( $attr ) && 0 === strpos( $attr, 'http' ) && $this->validate_image_url( $attr ) ) {
$image[ $index ] = $this->generate_url( $attr );
}
}
if ( ! empty( $image['opts']['thumb'] ) && $this->validate_image_url( $image['opts']['thumb'] ) ) {
$image['opts']['thumb'] = $this->generate_url( $image['opts']['thumb'] );
}
}
return $image;
}
/**
* Parse template data from FacetWP that will be included in JSON response.
* https://facetwp.com/documentation/developers/output/facetwp_render_output/
*
* @param array $output The full array of FacetWP data.
* @return array The FacetWP data with Easy IO URLs.
*/
function filter_facetwp_json_output( $output ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( empty( $output['template'] ) || ! is_string( $output['template'] ) ) {
$this->debug_message( 'no template data available' );
if ( $this->function_exists( 'print_r' ) ) {
$this->debug_message( print_r( $output, true ) );
}
return $output;
}
$this->filtering_the_page = true;
$template = $this->filter_the_content( $output['template'] );
if ( $template ) {
$this->debug_message( 'template data modified' );
$output['template'] = $template;
}
return $output;
}
/**
* Handle direct image urls within Plugins.
*
* @param string $image A url for an image.
* @return string The ExactDNified image url.
*/
function plugin_get_image_url( $image ) {
// Don't foul up the admin side of things, unless a plugin wants to.
if ( is_admin() &&
/**
* Provide plugins a way of running ExactDN for images in the WordPress Dashboard (wp-admin).
*
* @param bool false Stop ExactDN from being run on the Dashboard. Default to false, use true to run in wp-admin.
* @param array $args {
* Array of image details.
*
* @type string|bool $image Image URL or false.
* @type int $attachment_id Attachment ID of the image.
* }
*/
false === apply_filters( 'exactdn_admin_allow_plugin_url', false, $image )
) {
return $image;
}
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( $this->validate_image_url( $image ) ) {
return $this->generate_url( $image );
}
return $image;
}
/**
* Handle images in Spotlight's Instagram response/endpoint.
*
* @param array $data The Instagram item data.
* @return array The Instagram data with ExactDNified image urls.
*/
function spotlight_instagram_response( $data ) {
if ( is_array( $data ) && ! empty( $data['thumbnails']['s'] ) ) {
if ( $this->validate_image_url( $data['thumbnails']['s'] ) ) {
$data['thumbnails']['s'] = $this->generate_url( $data['thumbnails']['s'] );
}
}
if ( is_array( $data ) && ! empty( $data['thumbnails']['m'] ) ) {
if ( $this->validate_image_url( $data['thumbnails']['m'] ) ) {
$data['thumbnails']['m'] = $this->generate_url( $data['thumbnails']['m'] );
}
}
return $data;
}
/**
* Handle images in legacy WooCommerce API endpoints.
*
* @param array $product_data The product information that will be returned via the API.
* @return array The product information with ExactDNified image urls.
*/
function woocommerce_api_product_response( $product_data ) {
if ( is_array( $product_data ) && ! empty( $product_data['featured_src'] ) ) {
if ( $this->validate_image_url( $product_data['featured_src'] ) ) {
$product_data['featured_src'] = $this->generate_url( $product_data['featured_src'] );
}
}
return $product_data;
}
/**
* Suppress query args for certain files, typically for placholder images.
*
* @param array|string $args Array of ExactDN arguments.
* @param string $image_url Image URL.
* @param string|null $scheme Image scheme. Default to null.
* @return array Empty if it matches our search, otherwise just $args untouched.
*/
function exactdn_remove_args( $args, $image_url, $scheme ) {
if ( strpos( $image_url, 'ewww/lazy/placeholder' ) ) {
return array();
}
if ( strpos( $image_url, 'easyio/lazy/placeholder' ) ) {
return array();
}
if ( strpos( $image_url, 'swis/lazy/placeholder' ) ) {
return array();
}
if ( strpos( $image_url, '/dummy.png' ) ) {
return array();
}
if ( strpos( $image_url, '/lazy.png' ) ) {
return array();
}
if ( strpos( $image_url, 'lazy_placeholder.gif' ) ) {
return array();
}
if ( strpos( $image_url, '/assets/images/' ) ) {
return array();
}
if ( strpos( $image_url, 'LayerSlider/static/img' ) ) {
return array();
}
if ( strpos( $image_url, 'lazy-load/images/' ) ) {
return array();
}
if ( strpos( $image_url, 'public/images/spacer.' ) ) {
return array();
}
if ( '.svg' === substr( $image_url, -4 ) ) {
return array();
}
return $args;
}
/**
* Exclude pages from being processed for things like page builders.
*
* @since 6.1.9
*
* @param boolean $skip Whether ExactDN should skip processing.
* @param string $uri The URI of the page (no domain or scheme included).
* @return boolean True to skip the page, unchanged otherwise.
*/
function skip_page( $skip = false, $uri = '' ) {
if ( false !== strpos( $uri, '?brizy-edit' ) ) {
return true;
}
if ( false !== strpos( $uri, '&builder=true' ) ) {
return true;
}
if ( false !== strpos( $uri, 'cornerstone=' ) || false !== strpos( $uri, 'cornerstone-endpoint' ) ) {
return true;
}
if ( false !== strpos( $uri, 'ct_builder=' ) ) {
return true;
}
if ( false !== strpos( $uri, 'ct_render_shortcode=' ) || false !== strpos( $uri, 'action=oxy_render' ) ) {
return true;
}
if ( false !== strpos( $uri, 'elementor-preview=' ) ) {
return true;
}
if ( false !== strpos( $uri, 'et_fb=' ) ) {
return true;
}
if ( false !== strpos( $uri, 'fb-edit=' ) ) {
return true;
}
if ( false !== strpos( $uri, '?fl_builder' ) ) {
return true;
}
if ( false !== strpos( $uri, 'tatsu=' ) ) {
return true;
}
if ( false !== strpos( $uri, 'tve=true' ) ) {
return true;
}
return $skip;
}
/**
* Exclude images and other resources from being processed based on user specified list.
*
* @since 4.6.0
*
* @param boolean $skip Whether ExactDN should skip processing.
* @param string $url Resource URL.
* @return boolean True to skip the resource, unchanged otherwise.
*/
function exactdn_skip_user_exclusions( $skip, $url ) {
if ( $this->user_exclusions ) {
foreach ( $this->user_exclusions as $exclusion ) {
if ( false !== strpos( $url, $exclusion ) ) {
$this->debug_message( "user excluded $url via $exclusion" );
return true;
}
}
}
return $skip;
}
/**
* Converts a local script/css url to use ExactDN.
*
* @param string $url URL to the resource being parsed.
* @return string The ExactDN version of the resource, if it was local.
*/
function parse_enqueue( $url ) {
if ( is_admin() ) {
return $url;
}
if ( did_action( 'cornerstone_boot_app' ) || did_action( 'cs_before_preview_frame' ) ) {
return $url;
}
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$parsed_url = $this->parse_url( $url );
if ( false !== strpos( $url, 'wp-admin/' ) ) {
return $url;
}
if ( false !== strpos( $url, 'xmlrpc.php' ) ) {
return $url;
}
/**
* Allow specific URLs to avoid going through ExactDN.
*
* @param bool false Should the URL be returned as is, without going through ExactDN. Default to false.
* @param string $url Resource URL.
* @param array|string $args Array of ExactDN arguments.
* @param string|null $scheme URL scheme. Default to null.
*/
if ( true === apply_filters( 'exactdn_skip_for_url', false, $url, array(), null ) ) {
return $url;
}
// Unable to parse.
if ( ! $parsed_url || ! is_array( $parsed_url ) || empty( $parsed_url['host'] ) || empty( $parsed_url['path'] ) ) {
$this->debug_message( 'src url no good' );
return $url;
}
// No PHP files shall pass.
if ( preg_match( '/\.php$/', $parsed_url['path'] ) ) {
return $url;
}
// Make sure this is an allowed image domain/hostname for ExactDN on this site.
if ( ! $this->allow_image_domain( $parsed_url['host'] ) ) {
$this->debug_message( "invalid host for ExactDN: {$parsed_url['host']}" );
return $url;
}
// Figure out which CDN (sub)domain to use.
if ( empty( $this->exactdn_domain ) ) {
$this->debug_message( 'no exactdn domain configured' );
return $url;
}
// You can't run an ExactDN URL through again because query strings are stripped.
// So if the image is already an ExactDN URL, append the new arguments to the existing URL.
if ( $this->exactdn_domain === $parsed_url['host'] ) {
$this->debug_message( 'url already has exactdn domain' );
return $url;
}
$scheme = $this->scheme;
if ( isset( $parsed_url['scheme'] ) && 'https' === $parsed_url['scheme'] ) {
$scheme = 'https';
}
global $wp_version;
// If a resource doesn't have a version string, we add one to help with cache-busting.
if (
false !== strpos( $url, $this->content_path . '/themes/' ) &&
( empty( $parsed_url['query'] ) || 'ver=' . $wp_version === $parsed_url['query'] )
) {
$modified = $this->function_exists( 'filemtime' ) ? filemtime( get_template_directory() ) : '';
if ( empty( $modified ) ) {
$modified = $this->version;
}
/**
* Allows a custom version string for resources that are missing one.
*
* @param string Defaults to the modified time of the theme folder, and falls back to the plugin version.
*/
$parsed_url['query'] = apply_filters( 'exactdn_version_string', "m=$modified" );
} elseif (
false !== strpos( $url, $this->content_path . '/plugins/' ) &&
( empty( $parsed_url['query'] ) || 'ver=' . $wp_version === $parsed_url['query'] )
) {
$parsed_url['query'] = '';
$path = $this->url_to_path_exists( $url );
if ( $path ) {
$modified = $this->function_exists( 'filemtime' ) ? filemtime( dirname( $path ) ) : '';
if ( empty( $modified ) ) {
$modified = $this->version;
}
/**
* Allows a custom version string for resources that are missing one.
*
* @param string Defaults to the modified time of the folder, and falls back to the plugin version.
*/
$parsed_url['query'] = apply_filters( 'exactdn_version_string', "m=$modified" );
}
} elseif ( empty( $parsed_url['query'] ) ) {
$parsed_url['query'] = apply_filters( 'exactdn_version_string', 'm=' . $this->version );
}
$exactdn_url = $scheme . '://' . $this->exactdn_domain . '/' . ltrim( $parsed_url['path'], '/' ) . '?' . $parsed_url['query'];
$this->debug_message( "exactdn css/script url: $exactdn_url" );
return $this->url_scheme( $exactdn_url, $scheme );
}
/**
* Generates an ExactDN URL.
*
* @param string $image_url URL to the publicly accessible image you want to manipulate.
* @param array|string $args An array of arguments, i.e. array( 'w' => '300', 'resize' => '123,456' ), or in string form (w=123&h=456).
* @param string $scheme Indicates http or https, other schemes are invalid.
* @return string The raw final URL. You should run this through esc_url() before displaying it.
*/
function generate_url( $image_url, $args = array(), $scheme = null ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$image_url = trim( $image_url );
$this->debug_message( "starting with $image_url" );
if ( is_null( $scheme ) ) {
$scheme = $this->scheme;
}
if ( is_string( $scheme ) ) {
$this->debug_message( "starting scheme: $scheme" );
} else {
$this->debug_message( 'no starting scheme' );
}
/**
* Disables ExactDN URL processing for local development.
*
* @param bool false default
*/
if ( true === apply_filters( 'exactdn_development_mode', false ) ) {
$this->debug_message( 'skipping in dev mode' );
return $image_url;
}
/**
* Allow specific URLs to avoid going through ExactDN.
*
* @param bool false Should the URL be returned as is, without going through ExactDN. Default to false.
* @param string $image_url Resource URL.
* @param array|string $args Array of ExactDN arguments.
* @param string|null $scheme URL scheme. Default to null.
*/
if ( true === apply_filters( 'exactdn_skip_for_url', false, $image_url, $args, $scheme ) ) {
$this->debug_message( 'skipping via filter' );
return $image_url;
}
$jpg_quality = apply_filters( 'jpeg_quality', null, 'image_resize' );
$webp_quality = apply_filters( 'webp_quality', 75, 'image/webp' );
$more_args = array();
if ( false === strpos( $image_url, 'strip=all' ) && $this->get_option( $this->prefix . 'metadata_remove' ) ) {
$more_args['strip'] = 'all';
}
if ( false !== strpos( $image_url, 'lossy=1' ) && isset( $args['lossy'] ) && 0 === $args['lossy'] ) {
$image_url = str_replace( 'lossy=1', 'lossy=0', $image_url );
unset( $args['lossy'] );
} elseif ( isset( $args['lossy'] ) && false !== strpos( $image_url, 'lossy=0' ) ) {
unset( $args['lossy'] );
} elseif ( $this->plan_id > 1 && false === strpos( $image_url, 'lossy=' ) && ! $this->get_option( 'exactdn_lossy' ) ) {
$more_args['lossy'] = 0;
} elseif ( false === strpos( $image_url, 'lossy=' ) && 1 === $this->plan_id ) {
$more_args['lossy'] = 1;
} elseif ( false === strpos( $image_url, 'lossy=' ) && $this->get_option( 'exactdn_lossy' ) ) {
$more_args['lossy'] = is_numeric( $this->get_option( 'exactdn_lossy' ) ) ? (int) $this->get_option( 'exactdn_lossy' ) : 80;
}
if ( $this->plan_id > 1 && false === strpos( $image_url, 'quality=' ) && ! is_null( $jpg_quality ) && 82 !== (int) $jpg_quality ) {
$more_args['quality'] = $jpg_quality;
}
if ( $this->plan_id > 1 && false === strpos( $image_url, 'quality=' ) && 75 !== (int) $webp_quality && $webp_quality < $jpg_quality ) {
$more_args['quality'] = $webp_quality;
}
if ( defined( 'EIO_WEBP_SHARP_YUV' ) && EIO_WEBP_SHARP_YUV ) {
$more_args['sharp'] = 1;
}
// Merge given args with the automatic (option-based) args, and also makes sure args is an array if it was previously a string.
$args = wp_parse_args( $args, $more_args );
/**
* Filter the original image URL before it goes through ExactDN.
*
* @param string $image_url Image URL.
* @param array|string $args Array of ExactDN arguments.
* @param string|null $scheme Image scheme. Default to null.
*/
$image_url = apply_filters( 'exactdn_pre_image_url', $image_url, $args, $scheme );
$this->debug_message( "after exactdn_pre_image_url: $image_url" );
if ( empty( $image_url ) ) {
return $image_url;
}
$image_url_parts = $this->parse_url( $image_url );
// Unable to parse.
if ( ! is_array( $image_url_parts ) || empty( $image_url_parts['host'] ) || empty( $image_url_parts['path'] ) ) {
$this->debug_message( 'src url no good' );
return $image_url;
}
if ( isset( $image_url_parts['scheme'] ) && 'https' === $image_url_parts['scheme'] ) {
if ( is_array( $args ) && false === strpos( $image_url, 'ssl=' ) ) {
$this->debug_message( 'adding ssl=1' );
$args['ssl'] = 1;
}
$this->debug_message( 'setting scheme to https' );
$scheme = 'https';
}
/**
* Filter the ExactDN image parameters before they are applied to an image.
*
* @param array|string $args Array of ExactDN arguments.
* @param string $image_url Image URL.
* @param string|null $scheme Image scheme. Default to null.
*/
$args = apply_filters( 'exactdn_pre_args', $args, $image_url, $scheme );
if ( is_array( $args ) ) {
// Convert values that are arrays into strings.
foreach ( $args as $arg => $value ) {
if ( is_array( $value ) ) {
$args[ $arg ] = implode( ',', $value );
}
}
// Encode argument values.
$args = rawurlencode_deep( $args );
}
$this->debug_message( $image_url_parts['host'] );
$this->debug_message( $image_url_parts['path'] );
// Figure out which CDN (sub)domain to use.
if ( empty( $this->exactdn_domain ) ) {
$this->debug_message( 'no exactdn domain configured' );
return $image_url;
}
// You can't run an ExactDN URL through again because query strings are stripped.
// So if the image is already an ExactDN URL, append the new arguments to the existing URL.
if ( $this->exactdn_domain === $image_url_parts['host'] ) {
$this->debug_message( 'url already has exactdn domain' );
$exactdn_url = add_query_arg( $args, $image_url );
$exactdn_url = str_replace( '&', '&', $exactdn_url );
$exactdn_url = str_replace( '#038;', '&', $exactdn_url );
return $this->url_scheme( $exactdn_url, $scheme );
}
// ExactDN doesn't support query strings so we ignore them and look only at the path.
// However some source images are served via PHP so check the no-query-string extension.
// For future proofing, this is a blacklist of common issues rather than a whitelist.
$extension = pathinfo( $image_url_parts['path'], PATHINFO_EXTENSION );
if ( ( empty( $extension ) && false === strpos( $image_url_parts['path'], 'nextgen-image/' ) ) || in_array( $extension, array( 'php', 'ashx' ), true ) ) {
$this->debug_message( 'bad extension' );
return $image_url;
}
if ( $this->remove_path && 0 === strpos( $image_url_parts['path'], $this->remove_path ) ) {
$image_url_parts['path'] = substr( $image_url_parts['path'], strlen( $this->remove_path ) );
$this->debug_message( "trimming $this->remove_path from " . $image_url_parts['path'] );
}
$domain = 'http://' . $this->exactdn_domain . '/';
$exactdn_url = $domain . ltrim( $image_url_parts['path'], '/' );
$this->debug_message( "bare exactdn url: $exactdn_url" );
/**
* Add query strings to ExactDN URL.
* By default, ExactDN doesn't support query strings so we ignore them.
* This setting is ExactDN Server dependent.
*
* @param bool false Should query strings be added to the image URL. Default is false.
* @param string $image_url_parts['host'] Image URL's host.
*/
if ( isset( $image_url_parts['query'] ) && apply_filters( 'exactdn_add_query_string_to_domain', false, $image_url_parts['host'] ) ) {
$exactdn_url .= '?q=' . rawurlencode( $image_url_parts['query'] );
}
// This makes sure we populate args with the existing TST image version.
if ( ! empty( $image_url_parts['query'] ) && false !== strpos( $image_url_parts['query'], 'theia_smart' ) ) {
$args = wp_parse_args( $image_url_parts['query'], $args );
}
// Clear out args for some files (like videos) that might go through image_downsize.
if ( ! empty( $extension ) && in_array( $extension, array( 'mp4', 'm4p', 'm4v', 'mov', 'wvm', 'qt', 'ogv', 'mpg', 'mpeg', 'mpv' ), true ) ) {
$args = array();
}
if ( $args ) {
if ( is_array( $args ) ) {
$exactdn_url = add_query_arg( $args, $exactdn_url );
$exactdn_url = str_replace( '&', '&', $exactdn_url );
$exactdn_url = str_replace( '#038;', '&', $exactdn_url );
} else {
// You can pass a query string for complicated requests, although this should have been converted to an array already.
$exactdn_url .= '?' . $args;
}
}
$this->debug_message( "exactdn url with args: $exactdn_url" );
return $this->url_scheme( $exactdn_url, $scheme );
}
/**
* Prepends schemeless urls or replaces non-http scheme with a valid scheme, defaults to 'http'.
*
* @param string $url The URL to parse.
* @param string|null $scheme Retrieve specific URL component.
* @return string Result of parse_url.
*/
function url_scheme( $url, $scheme ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( ! in_array( $scheme, array( 'http', 'https' ), true ) ) {
$this->debug_message( 'not a valid scheme' );
if ( preg_match( '#^(https?:)?//#', $url ) ) {
$this->debug_message( 'url has a valid scheme already' );
return $url;
}
$this->debug_message( 'invalid scheme provided, and url sucks, defaulting to http' );
$scheme = 'http';
}
$this->debug_message( "valid $scheme - $url" );
return preg_replace( '#^([a-z:]+)?//#i', "$scheme://", $url );
}
/**
* A wrapper for human_time_diff() that gives sub-minute times in seconds.
*
* @param int $from Unix timestamp from which the difference begins.
* @param int $to Optional. Unix timestamp to end the time difference. Default is time().
* @return string Human readable time difference.
*/
function human_time_diff( $from, $to = '' ) {
if ( empty( $to ) ) {
$to = time();
}
$diff = (int) abs( $to - $from );
if ( $diff < 60 ) {
return "$diff sec";
}
return human_time_diff( $from, $to );
}
/**
* Adds link to header which enables DNS prefetching and preconnect for faster speed.
*
* @param array $hints A list of hints for a particular relationship type.
* @param string $relationship_type The type of hint being filtered: dns-prefetch, preconnect, etc.
* @return array The list of hints, potentially with the ExactDN domain added in.
*/
function dns_prefetch( $hints, $relationship_type ) {
if ( 'dns-prefetch' === $relationship_type && $this->exactdn_domain ) {
$hints[] = '//' . $this->exactdn_domain;
}
if ( 'preconnect' === $relationship_type && $this->exactdn_domain ) {
$hints[] = '//' . $this->exactdn_domain;
}
return $hints;
}
/**
* Adds the ExactDN domain to the list of 'local' domains for Autoptimize.
*
* @param array $domains A list of domains considered 'local' by Autoptimize.
* @return array The same list, with the ExactDN domain appended.
*/
function add_cdn_domain( $domains ) {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
if ( is_array( $domains ) && ! in_array( $this->exactdn_domain, $domains, true ) ) {
$this->debug_message( 'adding to CDN domain/host list: ' . $this->exactdn_domain );
$domains[] = $this->exactdn_domain;
}
return $domains;
}
/**
* Checks the configured alias for savings information.
*
* @return array The original size of all images that have been compressed by Easy IO along with how much was saved.
*/
function savings() {
$this->debug_message( '<b>' . __METHOD__ . '()</b>' );
$url = 'http://optimize.exactlywww.com/exactdn/savings.php';
$ssl = wp_http_supports( array( 'ssl' ) );
if ( $ssl ) {
$url = set_url_scheme( $url, 'https' );
}
add_filter( 'http_headers_useragent', $this->prefix . 'cloud_useragent', PHP_INT_MAX );
$result = wp_remote_post(
$url,
array(
'timeout' => 10,
'body' => array(
'alias' => $this->exactdn_domain,
),
)
);
if ( is_wp_error( $result ) ) {
$error_message = $result->get_error_message();
$this->debug_message( "savings request failed: $error_message" );
} elseif ( ! empty( $result['body'] ) ) {
$this->debug_message( "savings data retrieved: {$result['body']}" );
$response = json_decode( $result['body'], true );
if ( is_array( $response ) && ! empty( $response['original'] ) && ! empty( $response['savings'] ) ) {
return $response;
}
}
return false;
}
}
global $exactdn;
$exactdn = new ExactDN();
}