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<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName |
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/** |
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* Class for photon functionality. |
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* |
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* @package automattic/jetpack |
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*/ |
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|
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use Automattic\Jetpack\Assets; |
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|
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/** |
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* Class Jetpack_Photon |
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*/ |
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class Jetpack_Photon { |
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/** |
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* Singleton. |
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* |
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* @var null |
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*/ |
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private static $instance = null; |
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|
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/** |
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* Allowed extensions. |
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* |
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* @var string[] Allowed extensions must match https://code.trac.wordpress.org/browser/photon/index.php#L41 |
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*/ |
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protected static $extensions = array( |
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'gif', |
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'jpg', |
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'jpeg', |
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'png', |
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'webp', // Jetpack assumes Photon_OpenCV backend class is being used on the server. See link in docblock. |
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); |
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|
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/** |
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* Image sizes. |
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* |
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* Don't access this directly. Instead, use self::image_sizes() so it's actually populated with something. |
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* |
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* @var array Image sizes. |
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*/ |
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protected static $image_sizes = null; |
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|
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/** |
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* Singleton implementation |
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* |
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* @return object |
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*/ |
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public static function instance() { |
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if ( ! is_a( self::$instance, 'Jetpack_Photon' ) ) { |
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self::$instance = new Jetpack_Photon(); |
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self::$instance->setup(); |
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} |
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|
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return self::$instance; |
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} |
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|
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/** |
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* Silence is golden. |
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*/ |
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private function __construct() {} |
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|
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/** |
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* Register actions and filters, but only if basic Photon functions are available. |
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* The basic functions are found in ./functions.photon.php. |
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* |
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* @uses add_action, add_filter |
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* @return null |
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*/ |
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private function setup() { |
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if ( ! function_exists( 'jetpack_photon_url' ) ) { |
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return; |
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} |
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|
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// Images in post content and galleries. |
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add_filter( 'the_content', array( __CLASS__, 'filter_the_content' ), 999999 ); |
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add_filter( 'get_post_galleries', array( __CLASS__, 'filter_the_galleries' ), 999999 ); |
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add_filter( 'widget_media_image_instance', array( __CLASS__, 'filter_the_image_widget' ), 999999 ); |
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|
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// Core image retrieval. |
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add_filter( 'image_downsize', array( $this, 'filter_image_downsize' ), 10, 3 ); |
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add_filter( 'rest_request_before_callbacks', array( $this, 'should_rest_photon_image_downsize' ), 10, 3 ); |
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add_action( 'rest_after_insert_attachment', array( $this, 'should_rest_photon_image_downsize_insert_attachment' ), 10, 2 ); |
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add_filter( 'rest_request_after_callbacks', array( $this, 'cleanup_rest_photon_image_downsize' ) ); |
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|
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// Responsive image srcset substitution. |
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add_filter( 'wp_calculate_image_srcset', array( $this, 'filter_srcset_array' ), 10, 5 ); |
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add_filter( 'wp_calculate_image_sizes', array( $this, 'filter_sizes' ), 1, 2 ); // Early so themes can still easily filter. |
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|
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// Helpers for maniuplated images. |
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add_action( 'wp_enqueue_scripts', array( $this, 'action_wp_enqueue_scripts' ), 9 ); |
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|
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/** |
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* Allow Photon to disable uploaded images resizing and use its own resize capabilities instead. |
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* |
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* @module photon |
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* |
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* @since 7.1.0 |
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* |
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* @param bool false Should Photon enable noresize mode. Default to false. |
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*/ |
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if ( apply_filters( 'jetpack_photon_noresize_mode', false ) ) { |
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$this->enable_noresize_mode(); |
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} |
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} |
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|
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/** |
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* Enables the noresize mode for Photon, allowing to avoid intermediate size files generation. |
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*/ |
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private function enable_noresize_mode() { |
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jetpack_require_lib( 'class.jetpack-photon-image-sizes' ); |
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|
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// The main objective of noresize mode is to disable additional resized image versions creation. |
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// This filter handles removal of additional sizes. |
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add_filter( 'intermediate_image_sizes_advanced', array( __CLASS__, 'filter_photon_noresize_intermediate_sizes' ) ); |
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|
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// Load the noresize srcset solution on priority of 20, allowing other plugins to set sizes earlier. |
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add_filter( 'wp_get_attachment_metadata', array( __CLASS__, 'filter_photon_norezise_maybe_inject_sizes' ), 20, 2 ); |
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|
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// Photonize thumbnail URLs in the API response. |
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add_filter( 'rest_api_thumbnail_size_urls', array( __CLASS__, 'filter_photon_noresize_thumbnail_urls' ) ); |
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|
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// This allows to assign the Photon domain to images that normally use the home URL as base. |
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add_filter( 'jetpack_photon_domain', array( __CLASS__, 'filter_photon_norezise_domain' ), 10, 2 ); |
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|
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add_filter( 'the_content', array( __CLASS__, 'filter_content_add' ), 0 ); |
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|
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// Jetpack hooks in at six nines (999999) so this filter does at seven. |
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add_filter( 'the_content', array( __CLASS__, 'filter_content_remove' ), 9999999 ); |
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|
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// Regular Photon operation mode filter doesn't run when is_admin(), so we need an additional filter. |
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// This is temporary until Jetpack allows more easily running these filters for is_admin(). |
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if ( is_admin() ) { |
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add_filter( 'image_downsize', array( $this, 'filter_image_downsize' ), 5, 3 ); |
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|
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// Allows any image that gets passed to Photon to be resized via Photon. |
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add_filter( 'jetpack_photon_admin_allow_image_downsize', '__return_true' ); |
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} |
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} |
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|
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/** |
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* This is our catch-all to strip dimensions from intermediate images in content. |
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* Since this primarily only impacts post_content we do a little dance to add the filter early |
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* to `the_content` and then remove it later on in the same hook. |
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* |
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* @param String $content the post content. |
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* @return String the post content unchanged. |
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*/ |
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public static function filter_content_add( $content ) { |
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add_filter( 'jetpack_photon_pre_image_url', array( __CLASS__, 'strip_image_dimensions_maybe' ) ); |
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return $content; |
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} |
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|
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/** |
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* Removing the content filter that was set previously. |
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* |
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* @param String $content the post content. |
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* @return String the post content unchanged. |
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*/ |
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public static function filter_content_remove( $content ) { |
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remove_filter( 'jetpack_photon_pre_image_url', array( __CLASS__, 'strip_image_dimensions_maybe' ) ); |
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return $content; |
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} |
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|
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/** |
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* Short circuits the Photon filter to enable Photon processing for any URL. |
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* |
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* @param String $photon_url a proposed Photon URL for the media file. |
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* |
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* @return String an URL to be used for the media file. |
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*/ |
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public static function filter_photon_norezise_domain( $photon_url ) { |
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return $photon_url; |
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} |
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|
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/** |
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* Disables intermediate sizes to disallow resizing. |
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* |
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* @return array Empty array. |
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*/ |
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public static function filter_photon_noresize_intermediate_sizes() { |
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return array(); |
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} |
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|
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/** |
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* Filter thumbnail URLS to not generate. |
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* |
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* @param array $sizes Image sizes. |
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* |
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* @return mixed |
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*/ |
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public static function filter_photon_noresize_thumbnail_urls( $sizes ) { |
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foreach ( $sizes as $size => $url ) { |
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$parts = explode( '?', $url ); |
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$arguments = isset( $parts[1] ) ? $parts[1] : array(); |
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|
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$sizes[ $size ] = jetpack_photon_url( $url, wp_parse_args( $arguments ) ); |
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} |
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|
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return $sizes; |
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} |
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|
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/** |
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* Inject image sizes to attachment metadata. |
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* |
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* @param array $data Attachment metadata. |
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* @param int $attachment_id Attachment's post ID. |
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* |
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* @return array Attachment metadata. |
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*/ |
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public static function filter_photon_norezise_maybe_inject_sizes( $data, $attachment_id ) { |
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// Can't do much if data is empty. |
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if ( empty( $data ) ) { |
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return $data; |
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} |
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$sizes_already_exist = ( |
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true === is_array( $data ) |
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&& true === array_key_exists( 'sizes', $data ) |
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&& true === is_array( $data['sizes'] ) |
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&& false === empty( $data['sizes'] ) |
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); |
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if ( $sizes_already_exist ) { |
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return $data; |
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} |
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// Missing some critical data we need to determine sizes, not processing. |
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if ( ! isset( $data['file'] ) |
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|| ! isset( $data['width'] ) |
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|| ! isset( $data['height'] ) |
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) { |
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return $data; |
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} |
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|
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$mime_type = get_post_mime_type( $attachment_id ); |
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$attachment_is_image = preg_match( '!^image/!', $mime_type ); |
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|
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if ( 1 === $attachment_is_image ) { |
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$image_sizes = new Jetpack_Photon_ImageSizes( $attachment_id, $data ); |
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$data['sizes'] = $image_sizes->generate_sizes_meta(); |
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} |
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return $data; |
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} |
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|
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/** |
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* Inject image sizes to Jetpack REST API responses. This wraps the filter_photon_norezise_maybe_inject_sizes function. |
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* |
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* @param array $sizes Attachment sizes data. |
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* @param int $attachment_id Attachment's post ID. |
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* |
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* @return array Attachment sizes array. |
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*/ |
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public static function filter_photon_norezise_maybe_inject_sizes_api( $sizes, $attachment_id ) { |
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return self::filter_photon_norezise_maybe_inject_sizes( wp_get_attachment_metadata( $attachment_id ), $attachment_id ); |
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} |
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|
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/** |
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* * IN-CONTENT IMAGE MANIPULATION FUNCTIONS |
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**/ |
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|
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/** |
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* Match all images and any relevant <a> tags in a block of HTML. |
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* |
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* @param string $content Some HTML. |
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* @return array An array of $images matches, where $images[0] is |
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* an array of full matches, and the link_url, img_tag, |
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* and img_url keys are arrays of those matches. |
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*/ |
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public static function parse_images_from_html( $content ) { |
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$images = array(); |
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|
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if ( preg_match_all( '#(?:<a[^>]+?href=["|\'](?P<link_url>[^\s]+?)["|\'][^>]*?>\s*)?(?P<img_tag><(?:img|amp-img|amp-anim)[^>]*?\s+?src=["|\'](?P<img_url>[^\s]+?)["|\'].*?>){1}(?:\s*</a>)?#is', $content, $images ) ) { |
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foreach ( $images as $key => $unused ) { |
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// Simplify the output as much as possible, mostly for confirming test results. |
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if ( is_numeric( $key ) && $key > 0 ) { |
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unset( $images[ $key ] ); |
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} |
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} |
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|
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return $images; |
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} |
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|
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return array(); |
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} |
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|
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/** |
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* Try to determine height and width from strings WP appends to resized image filenames. |
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* |
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* @param string $src The image URL. |
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* @return array An array consisting of width and height. |
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*/ |
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public static function parse_dimensions_from_filename( $src ) { |
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$width_height_string = array(); |
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|
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if ( preg_match( '#-(\d+)x(\d+)\.(?:' . implode( '|', self::$extensions ) . '){1}$#i', $src, $width_height_string ) ) { |
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$width = (int) $width_height_string[1]; |
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$height = (int) $width_height_string[2]; |
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|
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if ( $width && $height ) { |
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return array( $width, $height ); |
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} |
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} |
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|
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return array( false, false ); |
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} |
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|
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/** |
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* Identify images in post content, and if images are local (uploaded to the current site), pass through Photon. |
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* |
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* @param string $content The content. |
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* |
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* @uses self::validate_image_url, apply_filters, jetpack_photon_url, esc_url |
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* @filter the_content |
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* |
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* @return string |
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*/ |
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public static function filter_the_content( $content ) { |
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$images = self::parse_images_from_html( $content ); |
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|
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if ( ! empty( $images ) ) { |
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$content_width = Jetpack::get_content_width(); |
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|
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$image_sizes = self::image_sizes(); |
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|
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$upload_dir = wp_get_upload_dir(); |
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|
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foreach ( $images[0] as $index => $tag ) { |
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// Default to resize, though fit may be used in certain cases where a dimension cannot be ascertained. |
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$transform = 'resize'; |
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|
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// Start with a clean attachment ID each time. |
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$attachment_id = false; |
| 330 |
|
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// Flag if we need to munge a fullsize URL. |
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$fullsize_url = false; |
| 333 |
|
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// Identify image source. |
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$src_orig = $images['img_url'][ $index ]; |
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$src = $src_orig; |
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|
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/** |
| 339 |
* Allow specific images to be skipped by Photon. |
| 340 |
* |
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* @module photon |
| 342 |
* |
| 343 |
* @since 2.0.3 |
| 344 |
* |
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* @param bool false Should Photon ignore this image. Default to false. |
| 346 |
* @param string $src Image URL. |
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* @param string $tag Image Tag (Image HTML output). |
| 348 |
*/ |
| 349 |
if ( apply_filters( 'jetpack_photon_skip_image', false, $src, $tag ) ) { |
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continue; |
| 351 |
} |
| 352 |
|
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// Support Automattic's Lazy Load plugin. |
| 354 |
// Can't modify $tag yet as we need unadulterated version later. |
| 355 |
if ( preg_match( '#data-lazy-src=["|\'](.+?)["|\']#i', $images['img_tag'][ $index ], $lazy_load_src ) ) { |
| 356 |
$placeholder_src_orig = $src; |
| 357 |
$placeholder_src = $placeholder_src_orig; |
| 358 |
$src_orig = $lazy_load_src[1]; |
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$src = $src_orig; |
| 360 |
} elseif ( preg_match( '#data-lazy-original=["|\'](.+?)["|\']#i', $images['img_tag'][ $index ], $lazy_load_src ) ) { |
| 361 |
$placeholder_src_orig = $src; |
| 362 |
$placeholder_src = $placeholder_src_orig; |
| 363 |
$src_orig = $lazy_load_src[1]; |
| 364 |
$src = $src_orig; |
| 365 |
} |
| 366 |
|
| 367 |
// Check if image URL should be used with Photon. |
| 368 |
if ( self::validate_image_url( $src ) ) { |
| 369 |
// Find the width and height attributes. |
| 370 |
$width = false; |
| 371 |
$height = false; |
| 372 |
|
| 373 |
// First, check the image tag. Note we only check for pixel sizes now; HTML4 percentages have never been correctly |
| 374 |
// supported, so we stopped pretending to support them in JP 9.1.0. |
| 375 |
if ( preg_match( '#[\s|"|\']width=["|\']?([\d%]+)["|\']?#i', $images['img_tag'][ $index ], $width_string ) ) { |
| 376 |
$width = false === strpos( $width_string[1], '%' ) ? $width_string[1] : false; |
| 377 |
} |
| 378 |
|
| 379 |
if ( preg_match( '#[\s|"|\']height=["|\']?([\d%]+)["|\']?#i', $images['img_tag'][ $index ], $height_string ) ) { |
| 380 |
$height = false === strpos( $height_string[1], '%' ) ? $height_string[1] : false; |
| 381 |
} |
| 382 |
|
| 383 |
// Detect WP registered image size from HTML class. |
| 384 |
if ( preg_match( '#class=["|\']?[^"\']*size-([^"\'\s]+)[^"\']*["|\']?#i', $images['img_tag'][ $index ], $size ) ) { |
| 385 |
$size = array_pop( $size ); |
| 386 |
|
| 387 |
if ( false === $width && false === $height && 'full' !== $size && array_key_exists( $size, $image_sizes ) ) { |
| 388 |
$width = (int) $image_sizes[ $size ]['width']; |
| 389 |
$height = (int) $image_sizes[ $size ]['height']; |
| 390 |
$transform = $image_sizes[ $size ]['crop'] ? 'resize' : 'fit'; |
| 391 |
} |
| 392 |
} else { |
| 393 |
unset( $size ); |
| 394 |
} |
| 395 |
|
| 396 |
// WP Attachment ID, if uploaded to this site. |
| 397 |
if ( |
| 398 |
preg_match( '#class=["|\']?[^"\']*wp-image-([\d]+)[^"\']*["|\']?#i', $images['img_tag'][ $index ], $attachment_id ) && |
| 399 |
0 === strpos( $src, $upload_dir['baseurl'] ) && |
| 400 |
/** |
| 401 |
* Filter whether an image using an attachment ID in its class has to be uploaded to the local site to go through Photon. |
| 402 |
* |
| 403 |
* @module photon |
| 404 |
* |
| 405 |
* @since 2.0.3 |
| 406 |
* |
| 407 |
* @param bool false Was the image uploaded to the local site. Default to false. |
| 408 |
* @param array $args { |
| 409 |
* Array of image details. |
| 410 |
* |
| 411 |
* @type $src Image URL. |
| 412 |
* @type tag Image tag (Image HTML output). |
| 413 |
* @type $images Array of information about the image. |
| 414 |
* @type $index Image index. |
| 415 |
* } |
| 416 |
*/ |
| 417 |
apply_filters( 'jetpack_photon_image_is_local', false, compact( 'src', 'tag', 'images', 'index' ) ) |
| 418 |
) { |
| 419 |
$attachment_id = (int) array_pop( $attachment_id ); |
| 420 |
|
| 421 |
if ( $attachment_id ) { |
| 422 |
$attachment = get_post( $attachment_id ); |
| 423 |
|
| 424 |
// Basic check on returned post object. |
| 425 |
if ( is_object( $attachment ) && ! is_wp_error( $attachment ) && 'attachment' === $attachment->post_type ) { |
| 426 |
$src_per_wp = wp_get_attachment_image_src( $attachment_id, isset( $size ) ? $size : 'full' ); |
| 427 |
|
| 428 |
if ( self::validate_image_url( $src_per_wp[0] ) ) { |
| 429 |
$src = $src_per_wp[0]; |
| 430 |
$fullsize_url = true; |
| 431 |
|
| 432 |
// Prevent image distortion if a detected dimension exceeds the image's natural dimensions. |
| 433 |
if ( ( false !== $width && $width > $src_per_wp[1] ) || ( false !== $height && $height > $src_per_wp[2] ) ) { |
| 434 |
$width = false === $width ? false : min( $width, $src_per_wp[1] ); |
| 435 |
$height = false === $height ? false : min( $height, $src_per_wp[2] ); |
| 436 |
} |
| 437 |
|
| 438 |
// If no width and height are found, max out at source image's natural dimensions. |
| 439 |
// Otherwise, respect registered image sizes' cropping setting. |
| 440 |
if ( false === $width && false === $height ) { |
| 441 |
$width = $src_per_wp[1]; |
| 442 |
$height = $src_per_wp[2]; |
| 443 |
$transform = 'fit'; |
| 444 |
} elseif ( isset( $size ) && array_key_exists( $size, $image_sizes ) && isset( $image_sizes[ $size ]['crop'] ) ) { |
| 445 |
$transform = (bool) $image_sizes[ $size ]['crop'] ? 'resize' : 'fit'; |
| 446 |
} |
| 447 |
} |
| 448 |
} else { |
| 449 |
unset( $attachment_id ); |
| 450 |
unset( $attachment ); |
| 451 |
} |
| 452 |
} |
| 453 |
} |
| 454 |
|
| 455 |
// If image tag lacks width and height arguments, try to determine from strings WP appends to resized image filenames. |
| 456 |
if ( false === $width && false === $height ) { |
| 457 |
list( $width, $height ) = self::parse_dimensions_from_filename( $src ); |
| 458 |
} |
| 459 |
|
| 460 |
$width_orig = $width; |
| 461 |
$height_orig = $height; |
| 462 |
$transform_orig = $transform; |
| 463 |
|
| 464 |
// If width is available, constrain to $content_width. |
| 465 |
if ( false !== $width && is_numeric( $content_width ) && $width > $content_width ) { |
| 466 |
if ( false !== $height ) { |
| 467 |
$height = round( ( $content_width * $height ) / $width ); |
| 468 |
} |
| 469 |
$width = $content_width; |
| 470 |
} |
| 471 |
|
| 472 |
// Set a width if none is found and $content_width is available. |
| 473 |
// If width is set in this manner and height is available, use `fit` instead of `resize` to prevent skewing. |
| 474 |
if ( false === $width && is_numeric( $content_width ) ) { |
| 475 |
$width = (int) $content_width; |
| 476 |
|
| 477 |
if ( false !== $height ) { |
| 478 |
$transform = 'fit'; |
| 479 |
} |
| 480 |
} |
| 481 |
|
| 482 |
// Detect if image source is for a custom-cropped thumbnail and prevent further URL manipulation. |
| 483 |
if ( ! $fullsize_url && preg_match_all( '#-e[a-z0-9]+(-\d+x\d+)?\.(' . implode( '|', self::$extensions ) . '){1}$#i', basename( $src ), $filename ) ) { |
| 484 |
$fullsize_url = true; |
| 485 |
} |
| 486 |
|
| 487 |
// Build URL, first maybe removing WP's resized string so we pass the original image to Photon. |
| 488 |
if ( ! $fullsize_url && 0 === strpos( $src, $upload_dir['baseurl'] ) ) { |
| 489 |
$src = self::strip_image_dimensions_maybe( $src ); |
| 490 |
} |
| 491 |
|
| 492 |
// Build array of Photon args and expose to filter before passing to Photon URL function. |
| 493 |
$args = array(); |
| 494 |
|
| 495 |
if ( false !== $width && false !== $height ) { |
| 496 |
$args[ $transform ] = $width . ',' . $height; |
| 497 |
} elseif ( false !== $width ) { |
| 498 |
$args['w'] = $width; |
| 499 |
} elseif ( false !== $height ) { |
| 500 |
$args['h'] = $height; |
| 501 |
} |
| 502 |
|
| 503 |
/** |
| 504 |
* Filter the array of Photon arguments added to an image when it goes through Photon. |
| 505 |
* By default, only includes width and height values. |
| 506 |
* |
| 507 |
* @see https://developer.wordpress.com/docs/photon/api/ |
| 508 |
* |
| 509 |
* @module photon |
| 510 |
* |
| 511 |
* @since 2.0.0 |
| 512 |
* |
| 513 |
* @param array $args Array of Photon Arguments. |
| 514 |
* @param array $details { |
| 515 |
* Array of image details. |
| 516 |
* |
| 517 |
* @type string $tag Image tag (Image HTML output). |
| 518 |
* @type string $src Image URL. |
| 519 |
* @type string $src_orig Original Image URL. |
| 520 |
* @type int|false $width Image width. |
| 521 |
* @type int|false $height Image height. |
| 522 |
* @type int|false $width_orig Original image width before constrained by content_width. |
| 523 |
* @type int|false $height_orig Original Image height before constrained by content_width. |
| 524 |
* @type string $transform Transform. |
| 525 |
* @type string $transform_orig Original transform before constrained by content_width. |
| 526 |
* } |
| 527 |
*/ |
| 528 |
$args = apply_filters( 'jetpack_photon_post_image_args', $args, compact( 'tag', 'src', 'src_orig', 'width', 'height', 'width_orig', 'height_orig', 'transform', 'transform_orig' ) ); |
| 529 |
|
| 530 |
$photon_url = jetpack_photon_url( $src, $args ); |
| 531 |
|
| 532 |
// Modify image tag if Photon function provides a URL |
| 533 |
// 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. |
| 534 |
if ( $src !== $photon_url ) { |
| 535 |
$new_tag = $tag; |
| 536 |
|
| 537 |
// If present, replace the link href with a Photoned URL for the full-size image. |
| 538 |
if ( ! empty( $images['link_url'][ $index ] ) && self::validate_image_url( $images['link_url'][ $index ] ) ) { |
| 539 |
$new_tag = preg_replace( '#(href=["|\'])' . preg_quote( $images['link_url'][ $index ], '#' ) . '(["|\'])#i', '\1' . jetpack_photon_url( $images['link_url'][ $index ] ) . '\2', $new_tag, 1 ); |
| 540 |
} |
| 541 |
|
| 542 |
// Supplant the original source value with our Photon URL. |
| 543 |
$photon_url = esc_url( $photon_url ); |
| 544 |
$new_tag = str_replace( $src_orig, $photon_url, $new_tag ); |
| 545 |
|
| 546 |
// If Lazy Load is in use, pass placeholder image through Photon. |
| 547 |
if ( isset( $placeholder_src ) && self::validate_image_url( $placeholder_src ) ) { |
| 548 |
$placeholder_src = jetpack_photon_url( $placeholder_src ); |
| 549 |
|
| 550 |
if ( $placeholder_src !== $placeholder_src_orig ) { |
| 551 |
$new_tag = str_replace( $placeholder_src_orig, esc_url( $placeholder_src ), $new_tag ); |
| 552 |
} |
| 553 |
|
| 554 |
unset( $placeholder_src ); |
| 555 |
} |
| 556 |
|
| 557 |
// If we are not transforming the image with resize, fit, or letterbox (lb), then we should remove |
| 558 |
// the width and height arguments (including HTML4 percentages) from the image to prevent distortion. |
| 559 |
// Even if $args['w'] and $args['h'] are present, Photon does not crop to those dimensions. Instead, |
| 560 |
// it appears to favor height. |
| 561 |
// |
| 562 |
// If we are transforming the image via one of those methods, let's update the width and height attributes. |
| 563 |
if ( empty( $args['resize'] ) && empty( $args['fit'] ) && empty( $args['lb'] ) ) { |
| 564 |
$new_tag = preg_replace( '#(?<=\s)(width|height)=["|\']?[\d%]+["|\']?\s?#i', '', $new_tag ); |
| 565 |
} else { |
| 566 |
$resize_args = isset( $args['resize'] ) ? $args['resize'] : false; |
| 567 |
if ( false === $resize_args ) { |
| 568 |
$resize_args = ( ! $resize_args && isset( $args['fit'] ) ) |
| 569 |
? $args['fit'] |
| 570 |
: false; |
| 571 |
} |
| 572 |
if ( false === $resize_args ) { |
| 573 |
$resize_args = ( ! $resize_args && isset( $args['lb'] ) ) |
| 574 |
? $args['lb'] |
| 575 |
: false; |
| 576 |
} |
| 577 |
|
| 578 |
$resize_args = array_map( 'trim', explode( ',', $resize_args ) ); |
| 579 |
|
| 580 |
// (?<=\s) - Ensure width or height attribute is preceded by a space |
| 581 |
// (width=["|\']?) - Matches, and captures, width=, width=", or width=' |
| 582 |
// [\d%]+ - Matches 1 or more digits or percent signs |
| 583 |
// (["|\']?) - Matches, and captures, ", ', or empty string |
| 584 |
// \s - Ensures there's a space after the attribute |
| 585 |
$new_tag = preg_replace( '#(?<=\s)(width=["|\']?)[\d%]+(["|\']?)\s?#i', sprintf( '${1}%d${2} ', $resize_args[0] ), $new_tag ); |
| 586 |
$new_tag = preg_replace( '#(?<=\s)(height=["|\']?)[\d%]+(["|\']?)\s?#i', sprintf( '${1}%d${2} ', $resize_args[1] ), $new_tag ); |
| 587 |
} |
| 588 |
|
| 589 |
// Tag an image for dimension checking. |
| 590 |
if ( ! self::is_amp_endpoint() ) { |
| 591 |
$new_tag = preg_replace( '#(\s?/)?>(\s*</a>)?$#i', ' data-recalc-dims="1"\1>\2', $new_tag ); |
| 592 |
} |
| 593 |
|
| 594 |
// Replace original tag with modified version. |
| 595 |
$content = str_replace( $tag, $new_tag, $content ); |
| 596 |
} |
| 597 |
} elseif ( preg_match( '#^http(s)?://i[\d]{1}.wp.com#', $src ) && ! empty( $images['link_url'][ $index ] ) && self::validate_image_url( $images['link_url'][ $index ] ) ) { |
| 598 |
$new_tag = preg_replace( '#(href=["|\'])' . preg_quote( $images['link_url'][ $index ], '#' ) . '(["|\'])#i', '\1' . jetpack_photon_url( $images['link_url'][ $index ] ) . '\2', $tag, 1 ); |
| 599 |
|
| 600 |
$content = str_replace( $tag, $new_tag, $content ); |
| 601 |
} |
| 602 |
} |
| 603 |
} |
| 604 |
|
| 605 |
return $content; |
| 606 |
} |
| 607 |
|
| 608 |
/** |
| 609 |
* Filter Core galleries |
| 610 |
* |
| 611 |
* @param array $galleries Gallery array. |
| 612 |
* |
| 613 |
* @return array |
| 614 |
*/ |
| 615 |
public static function filter_the_galleries( $galleries ) { |
| 616 |
if ( empty( $galleries ) || ! is_array( $galleries ) ) { |
| 617 |
return $galleries; |
| 618 |
} |
| 619 |
|
| 620 |
// Pass by reference, so we can modify them in place. |
| 621 |
foreach ( $galleries as &$this_gallery ) { |
| 622 |
if ( is_string( $this_gallery ) ) { |
| 623 |
$this_gallery = self::filter_the_content( $this_gallery ); |
| 624 |
} |
| 625 |
} |
| 626 |
unset( $this_gallery ); // break the reference. |
| 627 |
|
| 628 |
return $galleries; |
| 629 |
} |
| 630 |
|
| 631 |
/** |
| 632 |
* Runs the image widget through photon. |
| 633 |
* |
| 634 |
* @param array $instance Image widget instance data. |
| 635 |
* @return array |
| 636 |
*/ |
| 637 |
public static function filter_the_image_widget( $instance ) { |
| 638 |
if ( Jetpack::is_module_active( 'photon' ) && ! $instance['attachment_id'] && $instance['url'] ) { |
| 639 |
jetpack_photon_url( |
| 640 |
$instance['url'], |
| 641 |
array( |
| 642 |
'w' => $instance['width'], |
| 643 |
'h' => $instance['height'], |
| 644 |
) |
| 645 |
); |
| 646 |
} |
| 647 |
|
| 648 |
return $instance; |
| 649 |
} |
| 650 |
|
| 651 |
/** |
| 652 |
* * CORE IMAGE RETRIEVAL |
| 653 |
**/ |
| 654 |
|
| 655 |
/** |
| 656 |
* Filter post thumbnail image retrieval, passing images through Photon |
| 657 |
* |
| 658 |
* @param string|bool $image Image URL. |
| 659 |
* @param int $attachment_id Attachment ID. |
| 660 |
* @param string|array $size Declared size or a size array. |
| 661 |
* @uses is_admin, apply_filters, wp_get_attachment_url, self::validate_image_url, this::image_sizes, jetpack_photon_url |
| 662 |
* @filter image_downsize |
| 663 |
* @return string|bool |
| 664 |
*/ |
| 665 |
public function filter_image_downsize( $image, $attachment_id, $size ) { |
| 666 |
// Don't foul up the admin side of things, unless a plugin wants to. |
| 667 |
if ( is_admin() && |
| 668 |
/** |
| 669 |
* Provide plugins a way of running Photon for images in the WordPress Dashboard (wp-admin). |
| 670 |
* |
| 671 |
* Note: enabling this will result in Photon URLs added to your post content, which could make migrations across domains (and off Photon) a bit more challenging. |
| 672 |
* |
| 673 |
* @module photon |
| 674 |
* |
| 675 |
* @since 4.8.0 |
| 676 |
* |
| 677 |
* @param bool false Stop Photon from being run on the Dashboard. Default to false. |
| 678 |
* @param array $args { |
| 679 |
* Array of image details. |
| 680 |
* |
| 681 |
* @type $image Image URL. |
| 682 |
* @type $attachment_id Attachment ID of the image. |
| 683 |
* @type $size Image size. Can be a string (name of the image size, e.g. full) or an array of width and height. |
| 684 |
* } |
| 685 |
*/ |
| 686 |
false === apply_filters( 'jetpack_photon_admin_allow_image_downsize', false, compact( 'image', 'attachment_id', 'size' ) ) |
| 687 |
) { |
| 688 |
return $image; |
| 689 |
} |
| 690 |
|
| 691 |
/** |
| 692 |
* Provide plugins a way of preventing Photon from being applied to images retrieved from WordPress Core. |
| 693 |
* |
| 694 |
* @module photon |
| 695 |
* |
| 696 |
* @since 2.0.0 |
| 697 |
* |
| 698 |
* @param bool false Stop Photon from being applied to the image. Default to false. |
| 699 |
* @param array $args { |
| 700 |
* Array of image details. |
| 701 |
* |
| 702 |
* @type $image Image URL. |
| 703 |
* @type $attachment_id Attachment ID of the image. |
| 704 |
* @type $size Image size. Can be a string (name of the image size, e.g. full) or an array of width and height. |
| 705 |
* } |
| 706 |
*/ |
| 707 |
if ( apply_filters( 'jetpack_photon_override_image_downsize', false, compact( 'image', 'attachment_id', 'size' ) ) ) { |
| 708 |
return $image; |
| 709 |
} |
| 710 |
|
| 711 |
// Get the image URL and proceed with Photon-ification if successful. |
| 712 |
$image_url = wp_get_attachment_url( $attachment_id ); |
| 713 |
|
| 714 |
// Set this to true later when we know we have size meta. |
| 715 |
$has_size_meta = false; |
| 716 |
|
| 717 |
if ( $image_url ) { |
| 718 |
// Check if image URL should be used with Photon. |
| 719 |
if ( ! self::validate_image_url( $image_url ) ) { |
| 720 |
return $image; |
| 721 |
} |
| 722 |
|
| 723 |
$intermediate = true; // For the fourth array item returned by the image_downsize filter. |
| 724 |
|
| 725 |
// If an image is requested with a size known to WordPress, use that size's settings with Photon. |
| 726 |
// WP states that `add_image_size()` should use a string for the name, but doesn't enforce that. |
| 727 |
// Due to differences in how Core and Photon check for the registered image size, we check both types. |
| 728 |
if ( ( is_string( $size ) || is_int( $size ) ) && array_key_exists( $size, self::image_sizes() ) ) { |
| 729 |
$image_args = self::image_sizes(); |
| 730 |
$image_args = $image_args[ $size ]; |
| 731 |
|
| 732 |
$photon_args = array(); |
| 733 |
|
| 734 |
$image_meta = image_get_intermediate_size( $attachment_id, $size ); |
| 735 |
|
| 736 |
// 'full' is a special case: We need consistent data regardless of the requested size. |
| 737 |
if ( 'full' === $size ) { |
| 738 |
$image_meta = wp_get_attachment_metadata( $attachment_id ); |
| 739 |
$intermediate = false; |
| 740 |
} elseif ( ! $image_meta ) { |
| 741 |
// If we still don't have any image meta at this point, it's probably from a custom thumbnail size |
| 742 |
// for an image that was uploaded before the custom image was added to the theme. Try to determine the size manually. |
| 743 |
$image_meta = wp_get_attachment_metadata( $attachment_id ); |
| 744 |
|
| 745 |
if ( isset( $image_meta['width'], $image_meta['height'] ) ) { |
| 746 |
$image_resized = image_resize_dimensions( $image_meta['width'], $image_meta['height'], $image_args['width'], $image_args['height'], $image_args['crop'] ); |
| 747 |
if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image. |
| 748 |
$image_meta['width'] = $image_resized[6]; |
| 749 |
$image_meta['height'] = $image_resized[7]; |
| 750 |
} |
| 751 |
} |
| 752 |
} |
| 753 |
|
| 754 |
if ( isset( $image_meta['width'], $image_meta['height'] ) ) { |
| 755 |
$image_args['width'] = (int) $image_meta['width']; |
| 756 |
$image_args['height'] = (int) $image_meta['height']; |
| 757 |
|
| 758 |
list( $image_args['width'], $image_args['height'] ) = image_constrain_size_for_editor( $image_args['width'], $image_args['height'], $size, 'display' ); |
| 759 |
$has_size_meta = true; |
| 760 |
} |
| 761 |
|
| 762 |
// Expose determined arguments to a filter before passing to Photon. |
| 763 |
$transform = $image_args['crop'] ? 'resize' : 'fit'; |
| 764 |
|
| 765 |
// Check specified image dimensions and account for possible zero values; photon fails to resize if a dimension is zero. |
| 766 |
if ( 0 === $image_args['width'] || 0 === $image_args['height'] ) { |
| 767 |
if ( 0 === $image_args['width'] && 0 < $image_args['height'] ) { |
| 768 |
$photon_args['h'] = $image_args['height']; |
| 769 |
} elseif ( 0 === $image_args['height'] && 0 < $image_args['width'] ) { |
| 770 |
$photon_args['w'] = $image_args['width']; |
| 771 |
} |
| 772 |
} else { |
| 773 |
$image_meta = wp_get_attachment_metadata( $attachment_id ); |
| 774 |
if ( ( 'resize' === $transform ) && $image_meta ) { |
| 775 |
if ( isset( $image_meta['width'], $image_meta['height'] ) ) { |
| 776 |
// Lets make sure that we don't upscale images since wp never upscales them as well. |
| 777 |
$smaller_width = ( ( $image_meta['width'] < $image_args['width'] ) ? $image_meta['width'] : $image_args['width'] ); |
| 778 |
$smaller_height = ( ( $image_meta['height'] < $image_args['height'] ) ? $image_meta['height'] : $image_args['height'] ); |
| 779 |
|
| 780 |
$photon_args[ $transform ] = $smaller_width . ',' . $smaller_height; |
| 781 |
} |
| 782 |
} else { |
| 783 |
$photon_args[ $transform ] = $image_args['width'] . ',' . $image_args['height']; |
| 784 |
} |
| 785 |
} |
| 786 |
|
| 787 |
/** |
| 788 |
* Filter the Photon Arguments added to an image when going through Photon, when that image size is a string. |
| 789 |
* Image size will be a string (e.g. "full", "medium") when it is known to WordPress. |
| 790 |
* |
| 791 |
* @module photon |
| 792 |
* |
| 793 |
* @since 2.0.0 |
| 794 |
* |
| 795 |
* @param array $photon_args Array of Photon arguments. |
| 796 |
* @param array $args { |
| 797 |
* Array of image details. |
| 798 |
* |
| 799 |
* @type array $image_args Array of Image arguments (width, height, crop). |
| 800 |
* @type string $image_url Image URL. |
| 801 |
* @type int $attachment_id Attachment ID of the image. |
| 802 |
* @type string|int $size Image size. Can be a string (name of the image size, e.g. full) or an integer. |
| 803 |
* @type string $transform Value can be resize or fit. |
| 804 |
* @see https://developer.wordpress.com/docs/photon/api |
| 805 |
* } |
| 806 |
*/ |
| 807 |
$photon_args = apply_filters( 'jetpack_photon_image_downsize_string', $photon_args, compact( 'image_args', 'image_url', 'attachment_id', 'size', 'transform' ) ); |
| 808 |
|
| 809 |
// Generate Photon URL. |
| 810 |
$image = array( |
| 811 |
jetpack_photon_url( $image_url, $photon_args ), |
| 812 |
$has_size_meta ? $image_args['width'] : false, |
| 813 |
$has_size_meta ? $image_args['height'] : false, |
| 814 |
$intermediate, |
| 815 |
); |
| 816 |
} elseif ( is_array( $size ) ) { |
| 817 |
// Pull width and height values from the provided array, if possible. |
| 818 |
$width = isset( $size[0] ) ? (int) $size[0] : false; |
| 819 |
$height = isset( $size[1] ) ? (int) $size[1] : false; |
| 820 |
|
| 821 |
// Don't bother if necessary parameters aren't passed. |
| 822 |
if ( ! $width || ! $height ) { |
| 823 |
return $image; |
| 824 |
} |
| 825 |
|
| 826 |
$image_meta = wp_get_attachment_metadata( $attachment_id ); |
| 827 |
if ( isset( $image_meta['width'], $image_meta['height'] ) ) { |
| 828 |
$image_resized = image_resize_dimensions( $image_meta['width'], $image_meta['height'], $width, $height ); |
| 829 |
|
| 830 |
if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image. |
| 831 |
$width = $image_resized[6]; |
| 832 |
$height = $image_resized[7]; |
| 833 |
} else { |
| 834 |
$width = $image_meta['width']; |
| 835 |
$height = $image_meta['height']; |
| 836 |
} |
| 837 |
|
| 838 |
$has_size_meta = true; |
| 839 |
} |
| 840 |
|
| 841 |
list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size ); |
| 842 |
|
| 843 |
// Expose arguments to a filter before passing to Photon. |
| 844 |
$photon_args = array( |
| 845 |
'fit' => $width . ',' . $height, |
| 846 |
); |
| 847 |
|
| 848 |
/** |
| 849 |
* Filter the Photon Arguments added to an image when going through Photon, |
| 850 |
* when the image size is an array of height and width values. |
| 851 |
* |
| 852 |
* @module photon |
| 853 |
* |
| 854 |
* @since 2.0.0 |
| 855 |
* |
| 856 |
* @param array $photon_args Array of Photon arguments. |
| 857 |
* @param array $args { |
| 858 |
* Array of image details. |
| 859 |
* |
| 860 |
* @type $width Image width. |
| 861 |
* @type height Image height. |
| 862 |
* @type $image_url Image URL. |
| 863 |
* @type $attachment_id Attachment ID of the image. |
| 864 |
* } |
| 865 |
*/ |
| 866 |
$photon_args = apply_filters( 'jetpack_photon_image_downsize_array', $photon_args, compact( 'width', 'height', 'image_url', 'attachment_id' ) ); |
| 867 |
|
| 868 |
// Generate Photon URL. |
| 869 |
$image = array( |
| 870 |
jetpack_photon_url( $image_url, $photon_args ), |
| 871 |
$has_size_meta ? $width : false, |
| 872 |
$has_size_meta ? $height : false, |
| 873 |
$intermediate, |
| 874 |
); |
| 875 |
} |
| 876 |
} |
| 877 |
|
| 878 |
return $image; |
| 879 |
} |
| 880 |
|
| 881 |
/** |
| 882 |
* Filters an array of image `srcset` values, replacing each URL with its Photon equivalent. |
| 883 |
* |
| 884 |
* @since 3.8.0 |
| 885 |
* @since 4.0.4 Added automatically additional sizes beyond declared image sizes. |
| 886 |
* |
| 887 |
* @param array $sources An array of image urls and widths. |
| 888 |
* @param array $size_array The size array for srcset. |
| 889 |
* @param array $image_src The image srcs. |
| 890 |
* @param array $image_meta The image meta. |
| 891 |
* @param int $attachment_id Attachment ID. |
| 892 |
* |
| 893 |
* @uses self::validate_image_url, jetpack_photon_url, Jetpack_Photon::parse_from_filename |
| 894 |
* @uses Jetpack_Photon::strip_image_dimensions_maybe, Jetpack::get_content_width |
| 895 |
* |
| 896 |
* @return array An array of Photon image urls and widths. |
| 897 |
*/ |
| 898 |
public function filter_srcset_array( $sources = array(), $size_array = array(), $image_src = array(), $image_meta = array(), $attachment_id = 0 ) { |
| 899 |
if ( ! is_array( $sources ) ) { |
| 900 |
return $sources; |
| 901 |
} |
| 902 |
$upload_dir = wp_get_upload_dir(); |
| 903 |
|
| 904 |
foreach ( $sources as $i => $source ) { |
| 905 |
if ( ! self::validate_image_url( $source['url'] ) ) { |
| 906 |
continue; |
| 907 |
} |
| 908 |
|
| 909 |
/** This filter is already documented in class.photon.php */ |
| 910 |
if ( apply_filters( 'jetpack_photon_skip_image', false, $source['url'], $source ) ) { |
| 911 |
continue; |
| 912 |
} |
| 913 |
|
| 914 |
$url = $source['url']; |
| 915 |
list( $width, $height ) = self::parse_dimensions_from_filename( $url ); |
| 916 |
|
| 917 |
// It's quicker to get the full size with the data we have already, if available. |
| 918 |
if ( ! empty( $attachment_id ) ) { |
| 919 |
$url = wp_get_attachment_url( $attachment_id ); |
| 920 |
} else { |
| 921 |
$url = self::strip_image_dimensions_maybe( $url ); |
| 922 |
} |
| 923 |
|
| 924 |
$args = array(); |
| 925 |
if ( 'w' === $source['descriptor'] ) { |
| 926 |
if ( $height && ( (int) $source['value'] === $width ) ) { |
| 927 |
$args['resize'] = $width . ',' . $height; |
| 928 |
} else { |
| 929 |
$args['w'] = $source['value']; |
| 930 |
} |
| 931 |
} |
| 932 |
|
| 933 |
$sources[ $i ]['url'] = jetpack_photon_url( $url, $args ); |
| 934 |
} |
| 935 |
|
| 936 |
/** |
| 937 |
* At this point, $sources is the original srcset with Photonized URLs. |
| 938 |
* Now, we're going to construct additional sizes based on multiples of the content_width. |
| 939 |
* This will reduce the gap between the largest defined size and the original image. |
| 940 |
*/ |
| 941 |
|
| 942 |
/** |
| 943 |
* Filter the multiplier Photon uses to create new srcset items. |
| 944 |
* Return false to short-circuit and bypass auto-generation. |
| 945 |
* |
| 946 |
* @module photon |
| 947 |
* |
| 948 |
* @since 4.0.4 |
| 949 |
* |
| 950 |
* @param array|bool $multipliers Array of multipliers to use or false to bypass. |
| 951 |
*/ |
| 952 |
$multipliers = apply_filters( 'jetpack_photon_srcset_multipliers', array( 2, 3 ) ); |
| 953 |
$url = trailingslashit( $upload_dir['baseurl'] ) . $image_meta['file']; |
| 954 |
|
| 955 |
if ( |
| 956 |
/** Short-circuit via jetpack_photon_srcset_multipliers filter. */ |
| 957 |
is_array( $multipliers ) |
| 958 |
/** This filter is already documented in class.photon.php */ |
| 959 |
&& ! apply_filters( 'jetpack_photon_skip_image', false, $url, null ) |
| 960 |
/** Verify basic meta is intact. */ |
| 961 |
&& isset( $image_meta['width'] ) && isset( $image_meta['height'] ) && isset( $image_meta['file'] ) |
| 962 |
/** Verify we have the requested width/height. */ |
| 963 |
&& isset( $size_array[0] ) && isset( $size_array[1] ) |
| 964 |
) { |
| 965 |
|
| 966 |
$fullwidth = $image_meta['width']; |
| 967 |
$fullheight = $image_meta['height']; |
| 968 |
$reqwidth = $size_array[0]; |
| 969 |
$reqheight = $size_array[1]; |
| 970 |
|
| 971 |
$constrained_size = wp_constrain_dimensions( $fullwidth, $fullheight, $reqwidth ); |
| 972 |
$expected_size = array( $reqwidth, $reqheight ); |
| 973 |
|
| 974 |
if ( abs( $constrained_size[0] - $expected_size[0] ) <= 1 && abs( $constrained_size[1] - $expected_size[1] ) <= 1 ) { |
| 975 |
$crop = 'soft'; |
| 976 |
$base = Jetpack::get_content_width() ? Jetpack::get_content_width() : 1000; // Provide a default width if none set by the theme. |
| 977 |
} else { |
| 978 |
$crop = 'hard'; |
| 979 |
$base = $reqwidth; |
| 980 |
} |
| 981 |
|
| 982 |
$currentwidths = array_keys( $sources ); |
| 983 |
$newsources = null; |
| 984 |
|
| 985 |
foreach ( $multipliers as $multiplier ) { |
| 986 |
|
| 987 |
$newwidth = $base * $multiplier; |
| 988 |
foreach ( $currentwidths as $currentwidth ) { |
| 989 |
// If a new width would be within 100 pixes of an existing one or larger than the full size image, skip. |
| 990 |
if ( abs( $currentwidth - $newwidth ) < 50 || ( $newwidth > $fullwidth ) ) { |
| 991 |
continue 2; // Bump out back to the $multipliers as $multiplier. |
| 992 |
} |
| 993 |
} //end foreach ( $currentwidths as $currentwidth ){ |
| 994 |
|
| 995 |
if ( 'soft' === $crop ) { |
| 996 |
$args = array( |
| 997 |
'w' => $newwidth, |
| 998 |
); |
| 999 |
} else { // hard crop, e.g. add_image_size( 'example', 200, 200, true ). |
| 1000 |
$args = array( |
| 1001 |
'zoom' => $multiplier, |
| 1002 |
'resize' => $reqwidth . ',' . $reqheight, |
| 1003 |
); |
| 1004 |
} |
| 1005 |
|
| 1006 |
$newsources[ $newwidth ] = array( |
| 1007 |
'url' => jetpack_photon_url( $url, $args ), |
| 1008 |
'descriptor' => 'w', |
| 1009 |
'value' => $newwidth, |
| 1010 |
); |
| 1011 |
} //end foreach ( $multipliers as $multiplier ) |
| 1012 |
if ( is_array( $newsources ) ) { |
| 1013 |
$sources = array_replace( $sources, $newsources ); |
| 1014 |
} |
| 1015 |
} //end if isset( $image_meta['width'] ) && isset( $image_meta['file'] ) ) |
| 1016 |
|
| 1017 |
return $sources; |
| 1018 |
} |
| 1019 |
|
| 1020 |
/** |
| 1021 |
* Filters an array of image `sizes` values, using $content_width instead of image's full size. |
| 1022 |
* |
| 1023 |
* @since 4.0.4 |
| 1024 |
* @since 4.1.0 Returns early for images not within the_content. |
| 1025 |
* @param array $sizes An array of media query breakpoints. |
| 1026 |
* @param array $size Width and height of the image. |
| 1027 |
* @uses Jetpack::get_content_width |
| 1028 |
* @return array An array of media query breakpoints. |
| 1029 |
*/ |
| 1030 |
public function filter_sizes( $sizes, $size ) { |
| 1031 |
if ( ! doing_filter( 'the_content' ) ) { |
| 1032 |
return $sizes; |
| 1033 |
} |
| 1034 |
$content_width = Jetpack::get_content_width(); |
| 1035 |
if ( ! $content_width ) { |
| 1036 |
$content_width = 1000; |
| 1037 |
} |
| 1038 |
|
| 1039 |
if ( ( is_array( $size ) && $size[0] < $content_width ) ) { |
| 1040 |
return $sizes; |
| 1041 |
} |
| 1042 |
|
| 1043 |
return sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $content_width ); |
| 1044 |
} |
| 1045 |
|
| 1046 |
/** |
| 1047 |
* * GENERAL FUNCTIONS |
| 1048 |
**/ |
| 1049 |
|
| 1050 |
/** |
| 1051 |
* Ensure image URL is valid for Photon. |
| 1052 |
* Though Photon functions address some of the URL issues, we should avoid unnecessary processing if we know early on that the image isn't supported. |
| 1053 |
* |
| 1054 |
* @param string $url Image URL. |
| 1055 |
* @uses wp_parse_args |
| 1056 |
* @return bool |
| 1057 |
*/ |
| 1058 |
protected static function validate_image_url( $url ) { |
| 1059 |
$parsed_url = wp_parse_url( $url ); |
| 1060 |
|
| 1061 |
if ( ! $parsed_url ) { |
| 1062 |
return false; |
| 1063 |
} |
| 1064 |
|
| 1065 |
// Parse URL and ensure needed keys exist, since the array returned by `wp_parse_url` only includes the URL components it finds. |
| 1066 |
$url_info = wp_parse_args( |
| 1067 |
$parsed_url, |
| 1068 |
array( |
| 1069 |
'scheme' => null, |
| 1070 |
'host' => null, |
| 1071 |
'port' => null, |
| 1072 |
'path' => null, |
| 1073 |
) |
| 1074 |
); |
| 1075 |
|
| 1076 |
// Bail if scheme isn't http or port is set that isn't port 80. |
| 1077 |
if ( |
| 1078 |
( 'http' !== $url_info['scheme'] || ! in_array( $url_info['port'], array( 80, null ), true ) ) && |
| 1079 |
/** |
| 1080 |
* Allow Photon to fetch images that are served via HTTPS. |
| 1081 |
* |
| 1082 |
* @module photon |
| 1083 |
* |
| 1084 |
* @since 2.4.0 |
| 1085 |
* @since 3.9.0 Default to false. |
| 1086 |
* |
| 1087 |
* @param bool $reject_https Should Photon ignore images using the HTTPS scheme. Default to false. |
| 1088 |
*/ |
| 1089 |
apply_filters( 'jetpack_photon_reject_https', false ) |
| 1090 |
) { |
| 1091 |
return false; |
| 1092 |
} |
| 1093 |
|
| 1094 |
// Bail if no host is found. |
| 1095 |
if ( is_null( $url_info['host'] ) ) { |
| 1096 |
return false; |
| 1097 |
} |
| 1098 |
|
| 1099 |
// Bail if the image already went through Photon. |
| 1100 |
if ( preg_match( '#^i[\d]{1}.wp.com$#i', $url_info['host'] ) ) { |
| 1101 |
return false; |
| 1102 |
} |
| 1103 |
|
| 1104 |
// Bail if no path is found. |
| 1105 |
if ( is_null( $url_info['path'] ) ) { |
| 1106 |
return false; |
| 1107 |
} |
| 1108 |
|
| 1109 |
// Ensure image extension is acceptable. |
| 1110 |
if ( ! in_array( strtolower( pathinfo( $url_info['path'], PATHINFO_EXTENSION ) ), self::$extensions, true ) ) { |
| 1111 |
return false; |
| 1112 |
} |
| 1113 |
|
| 1114 |
// If we got this far, we should have an acceptable image URL |
| 1115 |
// But let folks filter to decline if they prefer. |
| 1116 |
/** |
| 1117 |
* Overwrite the results of the validation steps an image goes through before to be considered valid to be used by Photon. |
| 1118 |
* |
| 1119 |
* @module photon |
| 1120 |
* |
| 1121 |
* @since 3.0.0 |
| 1122 |
* |
| 1123 |
* @param bool true Is the image URL valid and can it be used by Photon. Default to true. |
| 1124 |
* @param string $url Image URL. |
| 1125 |
* @param array $parsed_url Array of information about the image. |
| 1126 |
*/ |
| 1127 |
return apply_filters( 'photon_validate_image_url', true, $url, $parsed_url ); |
| 1128 |
} |
| 1129 |
|
| 1130 |
/** |
| 1131 |
* Checks if the file exists before it passes the file to photon. |
| 1132 |
* |
| 1133 |
* @param string $src The image URL. |
| 1134 |
* @return string |
| 1135 |
**/ |
| 1136 |
public static function strip_image_dimensions_maybe( $src ) { |
| 1137 |
$stripped_src = $src; |
| 1138 |
|
| 1139 |
// Build URL, first removing WP's resized string so we pass the original image to Photon. |
| 1140 |
if ( preg_match( '#(-\d+x\d+)\.(' . implode( '|', self::$extensions ) . '){1}$#i', $src, $src_parts ) ) { |
| 1141 |
$stripped_src = str_replace( $src_parts[1], '', $src ); |
| 1142 |
$upload_dir = wp_get_upload_dir(); |
| 1143 |
|
| 1144 |
// Extracts the file path to the image minus the base url. |
| 1145 |
$file_path = substr( $stripped_src, strlen( $upload_dir['baseurl'] ) ); |
| 1146 |
|
| 1147 |
if ( file_exists( $upload_dir['basedir'] . $file_path ) ) { |
| 1148 |
$src = $stripped_src; |
| 1149 |
} |
| 1150 |
} |
| 1151 |
|
| 1152 |
return $src; |
| 1153 |
} |
| 1154 |
|
| 1155 |
/** |
| 1156 |
* Provide an array of available image sizes and corresponding dimensions. |
| 1157 |
* Similar to get_intermediate_image_sizes() except that it includes image sizes' dimensions, not just their names. |
| 1158 |
* |
| 1159 |
* @global $wp_additional_image_sizes |
| 1160 |
* @uses get_option |
| 1161 |
* @return array |
| 1162 |
*/ |
| 1163 |
protected static function image_sizes() { |
| 1164 |
if ( null === self::$image_sizes ) { |
| 1165 |
global $_wp_additional_image_sizes; |
| 1166 |
|
| 1167 |
// Populate an array matching the data structure of $_wp_additional_image_sizes so we have a consistent structure for image sizes. |
| 1168 |
$images = array( |
| 1169 |
'thumb' => array( |
| 1170 |
'width' => (int) get_option( 'thumbnail_size_w' ), |
| 1171 |
'height' => (int) get_option( 'thumbnail_size_h' ), |
| 1172 |
'crop' => (bool) get_option( 'thumbnail_crop' ), |
| 1173 |
), |
| 1174 |
'medium' => array( |
| 1175 |
'width' => (int) get_option( 'medium_size_w' ), |
| 1176 |
'height' => (int) get_option( 'medium_size_h' ), |
| 1177 |
'crop' => false, |
| 1178 |
), |
| 1179 |
'medium_large' => array( |
| 1180 |
'width' => (int) get_option( 'medium_large_size_w' ), |
| 1181 |
'height' => (int) get_option( 'medium_large_size_h' ), |
| 1182 |
'crop' => false, |
| 1183 |
), |
| 1184 |
'large' => array( |
| 1185 |
'width' => (int) get_option( 'large_size_w' ), |
| 1186 |
'height' => (int) get_option( 'large_size_h' ), |
| 1187 |
'crop' => false, |
| 1188 |
), |
| 1189 |
'full' => array( |
| 1190 |
'width' => null, |
| 1191 |
'height' => null, |
| 1192 |
'crop' => false, |
| 1193 |
), |
| 1194 |
); |
| 1195 |
|
| 1196 |
// Compatibility mapping as found in wp-includes/media.php. |
| 1197 |
$images['thumbnail'] = $images['thumb']; |
| 1198 |
|
| 1199 |
// Update class variable, merging in $_wp_additional_image_sizes if any are set. |
| 1200 |
if ( is_array( $_wp_additional_image_sizes ) && ! empty( $_wp_additional_image_sizes ) ) { |
| 1201 |
self::$image_sizes = array_merge( $images, $_wp_additional_image_sizes ); |
| 1202 |
} else { |
| 1203 |
self::$image_sizes = $images; |
| 1204 |
} |
| 1205 |
} |
| 1206 |
|
| 1207 |
return is_array( self::$image_sizes ) ? self::$image_sizes : array(); |
| 1208 |
} |
| 1209 |
|
| 1210 |
/** |
| 1211 |
* Pass og:image URLs through Photon |
| 1212 |
* |
| 1213 |
* @param array $tags Open graph tags. |
| 1214 |
* @param array $parameters Image parameters. |
| 1215 |
* @uses jetpack_photon_url |
| 1216 |
* @return array Open graph tags. |
| 1217 |
*/ |
| 1218 |
public function filter_open_graph_tags( $tags, $parameters ) { |
| 1219 |
if ( empty( $tags['og:image'] ) ) { |
| 1220 |
return $tags; |
| 1221 |
} |
| 1222 |
|
| 1223 |
$photon_args = array( |
| 1224 |
'fit' => sprintf( '%d,%d', 2 * $parameters['image_width'], 2 * $parameters['image_height'] ), |
| 1225 |
); |
| 1226 |
|
| 1227 |
if ( is_array( $tags['og:image'] ) ) { |
| 1228 |
$images = array(); |
| 1229 |
foreach ( $tags['og:image'] as $image ) { |
| 1230 |
$images[] = jetpack_photon_url( $image, $photon_args ); |
| 1231 |
} |
| 1232 |
$tags['og:image'] = $images; |
| 1233 |
} else { |
| 1234 |
$tags['og:image'] = jetpack_photon_url( $tags['og:image'], $photon_args ); |
| 1235 |
} |
| 1236 |
|
| 1237 |
return $tags; |
| 1238 |
} |
| 1239 |
|
| 1240 |
/** |
| 1241 |
* Enqueue Photon helper script |
| 1242 |
* |
| 1243 |
* @uses wp_enqueue_script, plugins_url |
| 1244 |
* @action wp_enqueue_script |
| 1245 |
* @return null |
| 1246 |
*/ |
| 1247 |
public function action_wp_enqueue_scripts() { |
| 1248 |
if ( self::is_amp_endpoint() ) { |
| 1249 |
return; |
| 1250 |
} |
| 1251 |
wp_enqueue_script( |
| 1252 |
'jetpack-photon', |
| 1253 |
Assets::get_file_url_for_environment( |
| 1254 |
'_inc/build/photon/photon.min.js', |
| 1255 |
'modules/photon/photon.js' |
| 1256 |
), |
| 1257 |
array(), |
| 1258 |
20191001, |
| 1259 |
true |
| 1260 |
); |
| 1261 |
} |
| 1262 |
|
| 1263 |
/** |
| 1264 |
* Determine if image_downsize should utilize Photon via REST API. |
| 1265 |
* |
| 1266 |
* The WordPress Block Editor (Gutenberg) and other REST API consumers using the wp/v2/media endpoint, especially in the "edit" |
| 1267 |
* context is more akin to the is_admin usage of Photon (see filter_image_downsize). Since consumers are trying to edit content in posts, |
| 1268 |
* Photon should not fire as it will fire later on display. By aborting an attempt to Photonize an image here, we |
| 1269 |
* prevents issues like https://github.com/Automattic/jetpack/issues/10580 . |
| 1270 |
* |
| 1271 |
* To determine if we're using the wp/v2/media endpoint, we hook onto the `rest_request_before_callbacks` filter and |
| 1272 |
* if determined we are using it in the edit context, we'll false out the `jetpack_photon_override_image_downsize` filter. |
| 1273 |
* |
| 1274 |
* @see Jetpack_Photon::filter_image_downsize() |
| 1275 |
* |
| 1276 |
* @param null|WP_Error $response REST API response. |
| 1277 |
* @param array $endpoint_data Endpoint data. Not used, but part of the filter. |
| 1278 |
* @param WP_REST_Request $request Request used to generate the response. |
| 1279 |
* |
| 1280 |
* @return null|WP_Error The original response object without modification. |
| 1281 |
*/ |
| 1282 |
public function should_rest_photon_image_downsize( $response, $endpoint_data, $request ) { |
| 1283 |
if ( ! is_a( $request, 'WP_REST_Request' ) ) { |
| 1284 |
return $response; // Something odd is happening. Do nothing and return the response. |
| 1285 |
} |
| 1286 |
|
| 1287 |
if ( is_wp_error( $response ) ) { |
| 1288 |
// If we're going to return an error, we don't need to do anything with Photon. |
| 1289 |
return $response; |
| 1290 |
} |
| 1291 |
|
| 1292 |
$this->should_rest_photon_image_downsize_override( $request ); |
| 1293 |
|
| 1294 |
return $response; |
| 1295 |
|
| 1296 |
} |
| 1297 |
|
| 1298 |
/** |
| 1299 |
* Helper function to check if a WP_REST_Request is the media endpoint in the edit context. |
| 1300 |
* |
| 1301 |
* @param WP_REST_Request $request The current REST request. |
| 1302 |
*/ |
| 1303 |
private function should_rest_photon_image_downsize_override( WP_REST_Request $request ) { |
| 1304 |
$route = $request->get_route(); |
| 1305 |
|
| 1306 |
if ( |
| 1307 |
( |
| 1308 |
false !== strpos( $route, 'wp/v2/media' ) |
| 1309 |
&& 'edit' === $request->get_param( 'context' ) |
| 1310 |
) |
| 1311 |
|| false !== strpos( $route, 'wpcom/v2/external-media/copy' ) |
| 1312 |
) { |
| 1313 |
// Don't use `__return_true()`: Use something unique. See ::_override_image_downsize_in_rest_edit_context() |
| 1314 |
// Late execution to avoid conflict with other plugins as we really don't want to run in this situation. |
| 1315 |
add_filter( |
| 1316 |
'jetpack_photon_override_image_downsize', |
| 1317 |
array( |
| 1318 |
$this, |
| 1319 |
'override_image_downsize_in_rest_edit_context', |
| 1320 |
), |
| 1321 |
999999 |
| 1322 |
); |
| 1323 |
} |
| 1324 |
} |
| 1325 |
|
| 1326 |
/** |
| 1327 |
* Brings in should_rest_photon_image_downsize for the rest_after_insert_attachment hook. |
| 1328 |
* |
| 1329 |
* @since 8.7.0 |
| 1330 |
* |
| 1331 |
* @param WP_Post $attachment Inserted or updated attachment object. |
| 1332 |
* @param WP_REST_Request $request Request object. |
| 1333 |
*/ |
| 1334 |
public function should_rest_photon_image_downsize_insert_attachment( WP_Post $attachment, WP_REST_Request $request ) { |
| 1335 |
if ( ! is_a( $request, 'WP_REST_Request' ) ) { |
| 1336 |
// Something odd is happening. |
| 1337 |
return; |
| 1338 |
} |
| 1339 |
|
| 1340 |
$this->should_rest_photon_image_downsize_override( $request ); |
| 1341 |
|
| 1342 |
} |
| 1343 |
|
| 1344 |
/** |
| 1345 |
* Remove the override we may have added in ::should_rest_photon_image_downsize() |
| 1346 |
* Since ::_override_image_downsize_in_rest_edit_context() is only |
| 1347 |
* every used here, we can always remove it without ever worrying |
| 1348 |
* about breaking any other configuration. |
| 1349 |
* |
| 1350 |
* @param mixed $response REST API Response. |
| 1351 |
* @return mixed Unchanged $response |
| 1352 |
*/ |
| 1353 |
public function cleanup_rest_photon_image_downsize( $response ) { |
| 1354 |
remove_filter( |
| 1355 |
'jetpack_photon_override_image_downsize', |
| 1356 |
array( |
| 1357 |
$this, |
| 1358 |
'override_image_downsize_in_rest_edit_context', |
| 1359 |
), |
| 1360 |
999999 |
| 1361 |
); |
| 1362 |
return $response; |
| 1363 |
} |
| 1364 |
|
| 1365 |
/** |
| 1366 |
* Used internally by ::should_rest_photon_image_downsize() to not photonize |
| 1367 |
* image URLs in ?context=edit REST requests. |
| 1368 |
* MUST NOT be used anywhere else. |
| 1369 |
* We use a unique function instead of __return_true so that we can clean up |
| 1370 |
* after ourselves without breaking anyone else's filters. |
| 1371 |
* |
| 1372 |
* @internal |
| 1373 |
* @return true |
| 1374 |
*/ |
| 1375 |
public function override_image_downsize_in_rest_edit_context() { |
| 1376 |
return true; |
| 1377 |
} |
| 1378 |
|
| 1379 |
/** |
| 1380 |
* Return whether the current page is AMP. |
| 1381 |
* |
| 1382 |
* This is only present for the sake of WordPress.com where the Jetpack_AMP_Support |
| 1383 |
* class does not yet exist. This mehod may only be called at the wp action or later. |
| 1384 |
* |
| 1385 |
* @return bool Whether AMP page. |
| 1386 |
*/ |
| 1387 |
private static function is_amp_endpoint() { |
| 1388 |
return class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request(); |
| 1389 |
} |
| 1390 |
} |
| 1391 |
|
