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382d455235
Props afercia, swissspidy. Fixes #34527. Built from https://develop.svn.wordpress.org/trunk@35478 git-svn-id: http://core.svn.wordpress.org/trunk@35442 1a063a9b-81f0-0310-95a4-ce76da25c4cd
961 lines
38 KiB
PHP
961 lines
38 KiB
PHP
<?php
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/**
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* oEmbed API: Top-level oEmbed functionality
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*
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* @package WordPress
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* @subpackage oEmbed
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* @since 4.4.0
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*/
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/**
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* Registers an embed handler.
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*
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* Should probably only be used for sites that do not support oEmbed.
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*
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* @since 2.9.0
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*
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* @global WP_Embed $wp_embed
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*
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* @param string $id An internal ID/name for the handler. Needs to be unique.
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* @param string $regex The regex that will be used to see if this handler should be used for a URL.
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* @param callable $callback The callback function that will be called if the regex is matched.
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* @param int $priority Optional. Used to specify the order in which the registered handlers will
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* be tested. Default 10.
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*/
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function wp_embed_register_handler( $id, $regex, $callback, $priority = 10 ) {
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global $wp_embed;
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$wp_embed->register_handler( $id, $regex, $callback, $priority );
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}
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/**
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* Unregisters a previously-registered embed handler.
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*
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* @since 2.9.0
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*
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* @global WP_Embed $wp_embed
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*
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* @param string $id The handler ID that should be removed.
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* @param int $priority Optional. The priority of the handler to be removed. Default 10.
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*/
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function wp_embed_unregister_handler( $id, $priority = 10 ) {
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global $wp_embed;
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$wp_embed->unregister_handler( $id, $priority );
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}
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/**
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* Create default array of embed parameters.
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*
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* The width defaults to the content width as specified by the theme. If the
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* theme does not specify a content width, then 500px is used.
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*
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* The default height is 1.5 times the width, or 1000px, whichever is smaller.
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*
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* The 'embed_defaults' filter can be used to adjust either of these values.
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*
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* @since 2.9.0
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*
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* @global int $content_width
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*
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* @param string $url Optional. The URL that should be embedded. Default empty.
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*
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* @return array Default embed parameters.
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*/
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function wp_embed_defaults( $url = '' ) {
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if ( ! empty( $GLOBALS['content_width'] ) )
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$width = (int) $GLOBALS['content_width'];
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if ( empty( $width ) )
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$width = 500;
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$height = min( ceil( $width * 1.5 ), 1000 );
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/**
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* Filter the default array of embed dimensions.
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*
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* @since 2.9.0
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*
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* @param int $width Width of the embed in pixels.
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* @param int $height Height of the embed in pixels.
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* @param string $url The URL that should be embedded.
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*/
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return apply_filters( 'embed_defaults', compact( 'width', 'height' ), $url );
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}
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/**
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* Attempts to fetch the embed HTML for a provided URL using oEmbed.
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*
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* @since 2.9.0
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*
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* @see WP_oEmbed
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*
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* @param string $url The URL that should be embedded.
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* @param array $args Optional. Additional arguments and parameters for retrieving embed HTML.
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* Default empty.
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* @return false|string False on failure or the embed HTML on success.
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*/
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function wp_oembed_get( $url, $args = '' ) {
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require_once( ABSPATH . WPINC . '/class-oembed.php' );
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$oembed = _wp_oembed_get_object();
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return $oembed->get_html( $url, $args );
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}
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/**
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* Adds a URL format and oEmbed provider URL pair.
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*
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* @since 2.9.0
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*
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* @see WP_oEmbed
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*
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* @param string $format The format of URL that this provider can handle. You can use asterisks
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* as wildcards.
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* @param string $provider The URL to the oEmbed provider.
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* @param boolean $regex Optional. Whether the `$format` parameter is in a RegEx format. Default false.
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*/
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function wp_oembed_add_provider( $format, $provider, $regex = false ) {
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require_once( ABSPATH . WPINC . '/class-oembed.php' );
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if ( did_action( 'plugins_loaded' ) ) {
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$oembed = _wp_oembed_get_object();
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$oembed->providers[$format] = array( $provider, $regex );
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} else {
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WP_oEmbed::_add_provider_early( $format, $provider, $regex );
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}
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}
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/**
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* Removes an oEmbed provider.
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*
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* @since 3.5.0
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*
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* @see WP_oEmbed
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*
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* @param string $format The URL format for the oEmbed provider to remove.
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* @return bool Was the provider removed successfully?
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*/
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function wp_oembed_remove_provider( $format ) {
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require_once( ABSPATH . WPINC . '/class-oembed.php' );
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if ( did_action( 'plugins_loaded' ) ) {
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$oembed = _wp_oembed_get_object();
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if ( isset( $oembed->providers[ $format ] ) ) {
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unset( $oembed->providers[ $format ] );
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return true;
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}
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} else {
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WP_oEmbed::_remove_provider_early( $format );
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}
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return false;
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}
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/**
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* Determines if default embed handlers should be loaded.
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*
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* Checks to make sure that the embeds library hasn't already been loaded. If
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* it hasn't, then it will load the embeds library.
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*
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* @since 2.9.0
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*
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* @see wp_embed_register_handler()
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*/
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function wp_maybe_load_embeds() {
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/**
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* Filter whether to load the default embed handlers.
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*
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* Returning a falsey value will prevent loading the default embed handlers.
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*
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* @since 2.9.0
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*
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* @param bool $maybe_load_embeds Whether to load the embeds library. Default true.
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*/
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if ( ! apply_filters( 'load_default_embeds', true ) ) {
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return;
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}
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wp_embed_register_handler( 'youtube_embed_url', '#https?://(www.)?youtube\.com/(?:v|embed)/([^/]+)#i', 'wp_embed_handler_youtube' );
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wp_embed_register_handler( 'googlevideo', '#http://video\.google\.([A-Za-z.]{2,5})/videoplay\?docid=([\d-]+)(.*?)#i', 'wp_embed_handler_googlevideo' );
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/**
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* Filter the audio embed handler callback.
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*
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* @since 3.6.0
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*
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* @param callable $handler Audio embed handler callback function.
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*/
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wp_embed_register_handler( 'audio', '#^https?://.+?\.(' . join( '|', wp_get_audio_extensions() ) . ')$#i', apply_filters( 'wp_audio_embed_handler', 'wp_embed_handler_audio' ), 9999 );
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/**
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* Filter the video embed handler callback.
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*
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* @since 3.6.0
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*
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* @param callable $handler Video embed handler callback function.
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*/
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wp_embed_register_handler( 'video', '#^https?://.+?\.(' . join( '|', wp_get_video_extensions() ) . ')$#i', apply_filters( 'wp_video_embed_handler', 'wp_embed_handler_video' ), 9999 );
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}
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/**
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* The Google Video embed handler callback.
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*
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* Google Video does not support oEmbed.
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*
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* @see WP_Embed::register_handler()
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* @see WP_Embed::shortcode()
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*
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* @param array $matches The RegEx matches from the provided regex when calling wp_embed_register_handler().
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* @param array $attr Embed attributes.
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* @param string $url The original URL that was matched by the regex.
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* @param array $rawattr The original unmodified attributes.
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* @return string The embed HTML.
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*/
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function wp_embed_handler_googlevideo( $matches, $attr, $url, $rawattr ) {
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// If the user supplied a fixed width AND height, use it
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if ( !empty($rawattr['width']) && !empty($rawattr['height']) ) {
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$width = (int) $rawattr['width'];
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$height = (int) $rawattr['height'];
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} else {
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list( $width, $height ) = wp_expand_dimensions( 425, 344, $attr['width'], $attr['height'] );
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}
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/**
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* Filter the Google Video embed output.
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*
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* @since 2.9.0
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*
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* @param string $html Google Video HTML embed markup.
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* @param array $matches The RegEx matches from the provided regex.
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* @param array $attr An array of embed attributes.
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* @param string $url The original URL that was matched by the regex.
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* @param array $rawattr The original unmodified attributes.
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*/
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return apply_filters( 'embed_googlevideo', '<embed type="application/x-shockwave-flash" src="http://video.google.com/googleplayer.swf?docid=' . esc_attr($matches[2]) . '&hl=en&fs=true" style="width:' . esc_attr($width) . 'px;height:' . esc_attr($height) . 'px" allowFullScreen="true" allowScriptAccess="always" />', $matches, $attr, $url, $rawattr );
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}
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/**
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* YouTube iframe embed handler callback.
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*
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* Catches YouTube iframe embed URLs that are not parsable by oEmbed but can be translated into a URL that is.
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*
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* @since 4.0.0
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*
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* @global WP_Embed $wp_embed
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*
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* @param array $matches The RegEx matches from the provided regex when calling
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* wp_embed_register_handler().
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* @param array $attr Embed attributes.
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* @param string $url The original URL that was matched by the regex.
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* @param array $rawattr The original unmodified attributes.
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* @return string The embed HTML.
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*/
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function wp_embed_handler_youtube( $matches, $attr, $url, $rawattr ) {
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global $wp_embed;
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$embed = $wp_embed->autoembed( "https://youtube.com/watch?v={$matches[2]}" );
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/**
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* Filter the YoutTube embed output.
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*
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* @since 4.0.0
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*
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* @see wp_embed_handler_youtube()
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*
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* @param string $embed YouTube embed output.
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* @param array $attr An array of embed attributes.
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* @param string $url The original URL that was matched by the regex.
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* @param array $rawattr The original unmodified attributes.
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*/
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return apply_filters( 'wp_embed_handler_youtube', $embed, $attr, $url, $rawattr );
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}
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/**
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* Audio embed handler callback.
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*
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* @since 3.6.0
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*
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* @param array $matches The RegEx matches from the provided regex when calling wp_embed_register_handler().
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* @param array $attr Embed attributes.
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* @param string $url The original URL that was matched by the regex.
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* @param array $rawattr The original unmodified attributes.
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* @return string The embed HTML.
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*/
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function wp_embed_handler_audio( $matches, $attr, $url, $rawattr ) {
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$audio = sprintf( '[audio src="%s" /]', esc_url( $url ) );
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/**
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* Filter the audio embed output.
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*
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* @since 3.6.0
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*
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* @param string $audio Audio embed output.
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* @param array $attr An array of embed attributes.
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* @param string $url The original URL that was matched by the regex.
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* @param array $rawattr The original unmodified attributes.
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*/
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return apply_filters( 'wp_embed_handler_audio', $audio, $attr, $url, $rawattr );
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}
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/**
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* Video embed handler callback.
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*
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* @since 3.6.0
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*
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* @param array $matches The RegEx matches from the provided regex when calling wp_embed_register_handler().
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* @param array $attr Embed attributes.
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* @param string $url The original URL that was matched by the regex.
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* @param array $rawattr The original unmodified attributes.
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* @return string The embed HTML.
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*/
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function wp_embed_handler_video( $matches, $attr, $url, $rawattr ) {
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$dimensions = '';
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if ( ! empty( $rawattr['width'] ) && ! empty( $rawattr['height'] ) ) {
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$dimensions .= sprintf( 'width="%d" ', (int) $rawattr['width'] );
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$dimensions .= sprintf( 'height="%d" ', (int) $rawattr['height'] );
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}
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$video = sprintf( '[video %s src="%s" /]', $dimensions, esc_url( $url ) );
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/**
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* Filter the video embed output.
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*
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* @since 3.6.0
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*
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* @param string $video Video embed output.
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* @param array $attr An array of embed attributes.
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* @param string $url The original URL that was matched by the regex.
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* @param array $rawattr The original unmodified attributes.
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*/
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return apply_filters( 'wp_embed_handler_video', $video, $attr, $url, $rawattr );
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}
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/**
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* Registers the oEmbed REST API route.
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*
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* @since 4.4.0
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*/
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function wp_oembed_register_route() {
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$controller = new WP_oEmbed_Controller();
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$controller->register_routes();
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}
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/**
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* Adds oEmbed discovery links in the website <head>.
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*
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* @since 4.4.0
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*/
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function wp_oembed_add_discovery_links() {
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$output = '';
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if ( is_singular() ) {
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$output .= '<link rel="alternate" type="application/json+oembed" href="' . esc_url( get_oembed_endpoint_url( get_permalink() ) ) . '" />' . "\n";
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if ( class_exists( 'SimpleXMLElement' ) ) {
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$output .= '<link rel="alternate" type="text/xml+oembed" href="' . esc_url( get_oembed_endpoint_url( get_permalink(), 'xml' ) ) . '" />' . "\n";
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}
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}
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/**
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* Filter the oEmbed discovery links HTML.
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*
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* @since 4.4.0
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*
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* @param string $output HTML of the discovery links.
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*/
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echo apply_filters( 'oembed_discovery_links', $output );
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}
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/**
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* Adds the necessary JavaScript to communicate with the embedded iframes.
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*
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* @since 4.4.0
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*/
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function wp_oembed_add_host_js() {
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wp_enqueue_script( 'wp-embed' );
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}
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/**
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* Retrieves the URL to embed a specific post in an iframe.
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*
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* @since 4.4.0
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*
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* @param int|WP_Post $post Optional. Post ID or object. Defaults to the current post.
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* @return string|false The post embed URL on success, false if the post doesn't exist.
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*/
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function get_post_embed_url( $post = null ) {
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$post = get_post( $post );
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if ( ! $post ) {
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return false;
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}
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if ( get_option( 'permalink_structure' ) ) {
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$embed_url = trailingslashit( get_permalink( $post ) ) . user_trailingslashit( 'embed' );
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} else {
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$embed_url = add_query_arg( array( 'embed' => 'true' ), get_permalink( $post ) );
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}
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/**
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* Filter the URL to embed a specific post.
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*
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* @since 4.4.0
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*
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* @param string $embed_url The post embed URL.
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* @param WP_Post $post The corresponding post object.
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*/
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return esc_url_raw( apply_filters( 'post_embed_url', $embed_url, $post ) );
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}
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/**
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* Retrieves the oEmbed endpoint URL for a given permalink.
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*
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* Pass an empty string as the first argument to get the endpoint base URL.
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*
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* @since 4.4.0
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*
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* @param string $permalink Optional. The permalink used for the `url` query arg. Default empty.
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* @param string $format Optional. The requested response format. Default 'json'.
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* @return string The oEmbed endpoint URL.
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*/
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function get_oembed_endpoint_url( $permalink = '', $format = 'json' ) {
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$url = rest_url( 'oembed/1.0/embed' );
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if ( 'json' === $format ) {
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$format = false;
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}
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if ( '' !== $permalink ) {
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$url = add_query_arg( array(
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'url' => urlencode( $permalink ),
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'format' => $format,
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), $url );
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}
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/**
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* Filter the oEmbed endpoint URL.
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*
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* @since 4.4.0
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*
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* @param string $url The URL to the oEmbed endpoint.
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* @param string $permalink The permalink used for the `url` query arg.
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* @param string $format The requested response format.
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*/
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return apply_filters( 'oembed_endpoint_url', $url, $permalink, $format );
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}
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/**
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* Retrieves the embed code for a specific post.
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*
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* @since 4.4.0
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*
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* @param int $width The width for the response.
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* @param int $height The height for the response.
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* @param int|WP_Post $post Optional. Post ID or object. Default is global `$post`.
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* @return string|false Embed code on success, false if post doesn't exist.
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*/
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function get_post_embed_html( $width, $height, $post = null ) {
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$post = get_post( $post );
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if ( ! $post ) {
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return false;
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}
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$embed_url = get_post_embed_url( $post );
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$output = '<blockquote><a href="' . get_permalink( $post ) . '">' . get_the_title( $post ) . "</a></blockquote>\n";
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$output .= "<script type='text/javascript'>\n";
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$output .= "<!--//--><![CDATA[//><!--\n";
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if ( SCRIPT_DEBUG ) {
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$output .= file_get_contents( ABSPATH . WPINC . '/js/wp-embed.js' );
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} else {
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/*
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* If you're looking at a src version of this file, you'll see an "include"
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* statement below. This is used by the `grunt build` process to directly
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* include a minified version of wp-embed.js, instead of using the
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* file_get_contents() method from above.
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*
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* If you're looking at a build version of this file, you'll see a string of
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* minified JavaScript. If you need to debug it, please turn on SCRIPT_DEBUG
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* and edit wp-embed.js directly.
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*/
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$output .=<<<JS
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!function(a,b){"use strict";function c(){if(!e){e=!0;var a,c,d,f=-1!==navigator.appVersion.indexOf("MSIE 10"),g=!!navigator.userAgent.match(/Trident.*rv\:11\./);if(f||g)for(a=b.querySelectorAll(".wp-embedded-content[security]"),d=0;d<a.length;d++)c=a[d].cloneNode(!0),c.removeAttribute("security"),a[d].parentNode.replaceChild(c,a[d])}}var d=b.querySelector&&a.addEventListener,e=!1;a.wp=a.wp||{},a.wp.receiveEmbedMessage||(a.wp.receiveEmbedMessage=function(c){var d=c.data;if(d.secret||d.message||d.value){var e,f,g,h,i,j=b.querySelectorAll('iframe[data-secret="'+d.secret+'"]'),k=b.querySelectorAll('blockquote[data-secret="'+d.secret+'"]');for(e=0;e<k.length;e++)k[e].style.display="none";for(e=0;e<j.length;e++)f=j[e],f.style.display="","height"===d.message&&(g=parseInt(d.value,10),g>1e3?g=1e3:200>~~g&&(g=200),f.height=g),"link"===d.message&&(h=b.createElement("a"),i=b.createElement("a"),h.href=f.getAttribute("src"),i.href=d.value,i.host===h.host&&b.activeElement===f&&(a.top.location.href=d.value))}},d&&(a.addEventListener("message",a.wp.receiveEmbedMessage,!1),b.addEventListener("DOMContentLoaded",c,!1),a.addEventListener("load",c,!1)))}(window,document);
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JS;
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}
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$output .= "\n//--><!]]>";
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$output .= "\n</script>";
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$output .= sprintf(
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'<iframe sandbox="allow-scripts" security="restricted" src="%1$s" width="%2$d" height="%3$d" title="%4$s" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe>',
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esc_url( $embed_url ),
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absint( $width ),
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absint( $height ),
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esc_attr__( 'Embedded WordPress Post' )
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);
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/**
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* Filter the embed HTML output for a given post.
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*
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* @since 4.4.0
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*
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* @param string $output The default HTML.
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* @param WP_Post $post Current post object.
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* @param int $width Width of the response.
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* @param int $height Height of the response.
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*/
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return apply_filters( 'embed_html', $output, $post, $width, $height );
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}
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/**
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* Retrieves the oEmbed response data for a given post.
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*
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* @since 4.4.0
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*
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* @param WP_Post|int $post Post object or ID.
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* @param int $width The requested width.
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* @return array|false Response data on success, false if post doesn't exist.
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*/
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function get_oembed_response_data( $post, $width ) {
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$post = get_post( $post );
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if ( ! $post ) {
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return false;
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}
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if ( 'publish' !== get_post_status( $post ) ) {
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return false;
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}
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/**
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* Filter the allowed minimum and maximum widths for the oEmbed response.
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*
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* @since 4.4.0
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*
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* @param array $min_max_width {
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* Minimum and maximum widths for the oEmbed response.
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*
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* @type int $min Minimum width. Default 200.
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* @type int $max Maximum width. Default 600.
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* }
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*/
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$min_max_width = apply_filters( 'oembed_min_max_width', array(
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'min' => 200,
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'max' => 600
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) );
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$width = min( max( $min_max_width['min'], $width ), $min_max_width['max'] );
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$height = max( ceil( $width / 16 * 9 ), 200 );
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$data = array(
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'version' => '1.0',
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'provider_name' => get_bloginfo( 'name' ),
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'provider_url' => get_home_url(),
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'author_name' => get_bloginfo( 'name' ),
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'author_url' => get_home_url(),
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'title' => $post->post_title,
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'type' => 'link',
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);
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$author = get_userdata( $post->post_author );
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if ( $author ) {
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$data['author_name'] = $author->display_name;
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$data['author_url'] = get_author_posts_url( $author->ID );
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}
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/**
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* Filter the oEmbed response data.
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*
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* @since 4.4.0
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*
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* @param array $data The response data.
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* @param WP_Post $post The post object.
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* @param int $width The requested width.
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* @param int $height The calculated height.
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*/
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return apply_filters( 'oembed_response_data', $data, $post, $width, $height );
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}
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/**
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* Filters the oEmbed response data to return an iframe embed code.
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*
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* @since 4.4.0
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*
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* @param array $data The response data.
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* @param WP_Post $post The post object.
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* @param int $width The requested width.
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* @param int $height The calculated height.
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* @return array The modified response data.
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*/
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function get_oembed_response_data_rich( $data, $post, $width, $height ) {
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$data['width'] = absint( $width );
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$data['height'] = absint( $height );
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$data['type'] = 'rich';
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$data['html'] = get_post_embed_html( $width, $height, $post );
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// Add post thumbnail to response if available.
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$thumbnail_id = false;
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if ( has_post_thumbnail( $post->ID ) ) {
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$thumbnail_id = get_post_thumbnail_id( $post->ID );
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}
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if ( 'attachment' === get_post_type( $post ) ) {
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if ( wp_attachment_is_image( $post ) ) {
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$thumbnail_id = $post->ID;
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} else if ( wp_attachment_is( 'video', $post ) ) {
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$thumbnail_id = get_post_thumbnail_id( $post );
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$data['type'] = 'video';
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}
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}
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if ( $thumbnail_id ) {
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list( $thumbnail_url, $thumbnail_width, $thumbnail_height ) = wp_get_attachment_image_src( $thumbnail_id, array( $width, 99999 ) );
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$data['thumbnail_url'] = $thumbnail_url;
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$data['thumbnail_width'] = $thumbnail_width;
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$data['thumbnail_height'] = $thumbnail_height;
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}
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return $data;
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}
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/**
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* Ensures that the specified format is either 'json' or 'xml'.
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*
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* @since 4.4.0
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*
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* @param string $format The oEmbed response format. Accepts 'json' or 'xml'.
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* @return string The format, either 'xml' or 'json'. Default 'json'.
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*/
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function wp_oembed_ensure_format( $format ) {
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if ( ! in_array( $format, array( 'json', 'xml' ), true ) ) {
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return 'json';
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}
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return $format;
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}
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/**
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* Hooks into the REST API output to print XML instead of JSON.
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*
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* This is only done for the oEmbed API endpoint,
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* which supports both formats.
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*
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* @access private
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* @since 4.4.0
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*
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* @param bool $served Whether the request has already been served.
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* @param WP_HTTP_ResponseInterface $result Result to send to the client. Usually a WP_REST_Response.
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* @param WP_REST_Request $request Request used to generate the response.
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* @param WP_REST_Server $server Server instance.
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* @return true
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*/
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function _oembed_rest_pre_serve_request( $served, $result, $request, $server ) {
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$params = $request->get_params();
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if ( '/oembed/1.0/embed' !== $request->get_route() || 'GET' !== $request->get_method() ) {
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return $served;
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}
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if ( ! isset( $params['format'] ) || 'xml' !== $params['format'] ) {
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return $served;
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}
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// Embed links inside the request.
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$data = $server->response_to_data( $result, false );
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if ( 404 === $result->get_status() ) {
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$data = $data[0];
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}
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if ( ! class_exists( 'SimpleXMLElement' ) ) {
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status_header( 501 );
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die( get_status_header_desc( 501 ) );
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}
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$result = _oembed_create_xml( $data );
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// Bail if there's no XML.
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if ( ! $result ) {
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status_header( 501 );
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return get_status_header_desc( 501 );
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}
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if ( ! headers_sent() ) {
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$server->send_header( 'Content-Type', 'text/xml; charset=' . get_option( 'blog_charset' ) );
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}
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echo $result;
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return true;
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}
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/**
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* Creates an XML string from a given array.
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*
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* @since 4.4.0
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* @access private
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*
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* @param array $data The original oEmbed response data.
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* @param SimpleXMLElement $node Optional. XML node to append the result to recursively.
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* @return string|false XML string on success, false on error.
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*/
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function _oembed_create_xml( $data, $node = null ) {
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if ( ! is_array( $data ) || empty( $data ) ) {
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return false;
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}
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if ( null === $node ) {
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$node = new SimpleXMLElement( '<oembed></oembed>' );
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}
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foreach ( $data as $key => $value ) {
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if ( is_numeric( $key ) ) {
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$key = 'oembed';
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}
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if ( is_array( $value ) ) {
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$item = $node->addChild( $key );
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_oembed_create_xml( $value, $item );
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} else {
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$node->addChild( $key, esc_html( $value ) );
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}
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}
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return $node->asXML();
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}
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/**
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* Filters the given oEmbed HTML.
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*
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* If the `$url` isn't on the trusted providers list,
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* we need to filter the HTML heavily for security.
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*
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* Only filters 'rich' and 'html' response types.
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*
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* @since 4.4.0
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*
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* @param string $result The oEmbed HTML result.
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* @param object $data A data object result from an oEmbed provider.
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* @param string $url The URL of the content to be embedded.
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* @return string The filtered and sanitized oEmbed result.
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*/
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function wp_filter_oembed_result( $result, $data, $url ) {
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if ( false === $result || ! in_array( $data->type, array( 'rich', 'video' ) ) ) {
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return $result;
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}
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require_once( ABSPATH . WPINC . '/class-oembed.php' );
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$wp_oembed = _wp_oembed_get_object();
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// Don't modify the HTML for trusted providers.
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if ( false !== $wp_oembed->get_provider( $url, array( 'discover' => false ) ) ) {
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return $result;
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}
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$allowed_html = array(
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'a' => array(
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'href' => true,
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),
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'blockquote' => array(),
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'iframe' => array(
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'src' => true,
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'width' => true,
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'height' => true,
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'frameborder' => true,
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'marginwidth' => true,
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'marginheight' => true,
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'scrolling' => true,
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'title' => true,
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'class' => true,
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),
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);
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$html = wp_kses( $result, $allowed_html );
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preg_match( '|(<blockquote>.*?</blockquote>)?.*(<iframe.*?></iframe>)|ms', $html, $content );
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// We require at least the iframe to exist.
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if ( empty( $content[2] ) ) {
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return false;
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}
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$html = $content[1] . $content[2];
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if ( ! empty( $content[1] ) ) {
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// We have a blockquote to fall back on. Hide the iframe by default.
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$html = str_replace( '<iframe', '<iframe style="display:none;"', $html );
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}
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$html = str_replace( '<iframe', '<iframe sandbox="allow-scripts" security="restricted"', $html );
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preg_match( '/ src=[\'"]([^\'"]*)[\'"]/', $html, $results );
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if ( ! empty( $results ) ) {
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$secret = wp_generate_password( 10, false );
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$url = esc_url( "{$results[1]}#?secret=$secret" );
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$html = str_replace( $results[0], " src=\"$url\" data-secret=\"$secret\"", $html );
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$html = str_replace( '<blockquote', "<blockquote data-secret=\"$secret\"", $html );
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}
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return $html;
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}
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/**
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* Filters the string in the 'more' link displayed after a trimmed excerpt.
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*
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* Replaces '[...]' (appended to automatically generated excerpts) with an
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* ellipsis and a "Continue reading" link in the embed template.
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*
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* @since 4.4.0
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*
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* @param string $more_string Default 'more' string.
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* @return string 'Continue reading' link prepended with an ellipsis.
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*/
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function wp_embed_excerpt_more( $more_string ) {
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if ( ! is_embed() ) {
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return $more_string;
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}
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$link = sprintf( '<a href="%1$s" class="wp-embed-more" target="_top">%2$s</a>',
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esc_url( get_permalink() ),
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/* translators: %s: Name of current post */
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sprintf( __( 'Continue reading %s' ), '<span class="screen-reader-text">' . get_the_title() . '</span>' )
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);
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return ' … ' . $link;
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}
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/**
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* Displays the post excerpt for the embed template.
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*
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* Intended to be used in 'The Loop'.
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*
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* @since 4.4.0
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*/
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function the_excerpt_embed() {
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$output = get_the_excerpt();
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/**
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* Filter the post excerpt for the embed template.
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*
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* @since 4.4.0
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*
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* @param string $output The current post excerpt.
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*/
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echo apply_filters( 'the_excerpt_embed', $output );
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}
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/**
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* Filters the post excerpt for the embed template.
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*
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* Shows players for video and audio attachments.
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*
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* @since 4.4.0
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*
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* @param string $content The current post excerpt.
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* @return string The modified post excerpt.
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*/
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function wp_embed_excerpt_attachment( $content ) {
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if ( is_attachment() ) {
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return prepend_attachment( '' );
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}
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return $content;
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}
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/**
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* Enqueue embed iframe default CSS and JS & fire do_action('enqueue_embed_scripts')
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*
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* Enqueue PNG fallback CSS for embed iframe for legacy versions of IE.
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*
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* Allows plugins to queue scripts for the embed iframe end using wp_enqueue_script().
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* Runs first in oembed_head().
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*
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* @since 4.4.0
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*/
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function enqueue_embed_scripts() {
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wp_enqueue_style( 'open-sans' );
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wp_enqueue_style( 'wp-embed-template-ie' );
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/**
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* Fires when scripts and styles are enqueued for the embed iframe.
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*
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* @since 4.4.0
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*/
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do_action( 'enqueue_embed_scripts' );
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}
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|
|
/**
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* Prints the CSS in the embed iframe header.
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|
*
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|
* @since 4.4.0
|
|
*/
|
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function print_embed_styles() {
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?>
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<style type="text/css">
|
|
<?php
|
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if ( SCRIPT_DEBUG ) {
|
|
readfile( ABSPATH . WPINC . "/css/wp-embed-template.css" );
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} else {
|
|
/*
|
|
* If you're looking at a src version of this file, you'll see an "include"
|
|
* statement below. This is used by the `grunt build` process to directly
|
|
* include a minified version of wp-oembed-embed.css, instead of using the
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|
* readfile() method from above.
|
|
*
|
|
* If you're looking at a build version of this file, you'll see a string of
|
|
* minified CSS. If you need to debug it, please turn on SCRIPT_DEBUG
|
|
* and edit wp-embed-template.css directly.
|
|
*/
|
|
?>
|
|
body,html{padding:0;margin:0}body{font-family:sans-serif}.screen-reader-text{clip:rect(1px,1px,1px,1px);height:1px;overflow:hidden;position:absolute!important;width:1px}.dashicons{display:inline-block;width:20px;height:20px;background-color:transparent;background-repeat:no-repeat;-webkit-background-size:20px 20px;background-size:20px;background-position:center;-webkit-transition:background .1s ease-in;transition:background .1s ease-in;position:relative;top:5px}.dashicons-no{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20viewBox%3D%270%200%2020%2020%27%3E%3Cpath%20d%3D%27M15.55%2013.7l-2.19%202.06-3.42-3.65-3.64%203.43-2.06-2.18%203.64-3.43-3.42-3.64%202.18-2.06%203.43%203.64%203.64-3.42%202.05%202.18-3.64%203.43z%27%20fill%3D%27%23fff%27%2F%3E%3C%2Fsvg%3E")}.dashicons-admin-comments{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20viewBox%3D%270%200%2020%2020%27%3E%3Cpath%20d%3D%27M5%202h9q.82%200%201.41.59T16%204v7q0%20.82-.59%201.41T14%2013h-2l-5%205v-5H5q-.82%200-1.41-.59T3%2011V4q0-.82.59-1.41T5%202z%27%20fill%3D%27%2382878c%27%2F%3E%3C%2Fsvg%3E")}.wp-embed-comments a:hover .dashicons-admin-comments{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20viewBox%3D%270%200%2020%2020%27%3E%3Cpath%20d%3D%27M5%202h9q.82%200%201.41.59T16%204v7q0%20.82-.59%201.41T14%2013h-2l-5%205v-5H5q-.82%200-1.41-.59T3%2011V4q0-.82.59-1.41T5%202z%27%20fill%3D%27%230073aa%27%2F%3E%3C%2Fsvg%3E")}.dashicons-share{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20viewBox%3D%270%200%2020%2020%27%3E%3Cpath%20d%3D%27M14.5%2012q1.24%200%202.12.88T17.5%2015t-.88%202.12-2.12.88-2.12-.88T11.5%2015q0-.34.09-.69l-4.38-2.3Q6.32%2013%205%2013q-1.24%200-2.12-.88T2%2010t.88-2.12T5%207q1.3%200%202.21.99l4.38-2.3q-.09-.35-.09-.69%200-1.24.88-2.12T14.5%202t2.12.88T17.5%205t-.88%202.12T14.5%208q-1.3%200-2.21-.99l-4.38%202.3Q8%209.66%208%2010t-.09.69l4.38%202.3q.89-.99%202.21-.99z%27%20fill%3D%27%2382878c%27%2F%3E%3C%2Fsvg%3E");display:none}.js .dashicons-share{display:inline-block}.wp-embed-share-dialog-open:hover .dashicons-share{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20viewBox%3D%270%200%2020%2020%27%3E%3Cpath%20d%3D%27M14.5%2012q1.24%200%202.12.88T17.5%2015t-.88%202.12-2.12.88-2.12-.88T11.5%2015q0-.34.09-.69l-4.38-2.3Q6.32%2013%205%2013q-1.24%200-2.12-.88T2%2010t.88-2.12T5%207q1.3%200%202.21.99l4.38-2.3q-.09-.35-.09-.69%200-1.24.88-2.12T14.5%202t2.12.88T17.5%205t-.88%202.12T14.5%208q-1.3%200-2.21-.99l-4.38%202.3Q8%209.66%208%2010t-.09.69l4.38%202.3q.89-.99%202.21-.99z%27%20fill%3D%27%230073aa%27%2F%3E%3C%2Fsvg%3E")}.wp-embed{padding:25px;font:400 14px/1.5 'Open Sans',sans-serif;color:#82878c;background:#fff;border:1px solid #e5e5e5;-webkit-box-shadow:0 1px 1px rgba(0,0,0,.05);box-shadow:0 1px 1px rgba(0,0,0,.05);overflow:auto;zoom:1}.wp-embed a{color:#82878c;text-decoration:none}.wp-embed a:hover{text-decoration:underline}.wp-embed-featured-image{margin-bottom:20px}.wp-embed-featured-image img{width:100%;height:auto;border:none}.wp-embed-featured-image.square{float:left;max-width:10pc;margin-right:20px}.wp-embed p{margin:0}p.wp-embed-heading{margin:0 0 15px;font-weight:700;font-size:22px;line-height:1.3}.wp-embed-heading a{color:#32373c}.wp-embed .wp-embed-more{color:#b4b9be}.wp-embed-footer{display:table;width:100%;margin-top:30px}.wp-embed-site-icon{position:absolute;top:50%;left:0;-webkit-transform:translateY(-50%);-ms-transform:translateY(-50%);transform:translateY(-50%);height:25px;width:25px;border:0}.wp-embed-site-title{font-weight:700;line-height:25px}.wp-embed-site-title a{position:relative;display:inline-block;padding-left:35px}.wp-embed-meta,.wp-embed-site-title{display:table-cell}.wp-embed-meta{text-align:right;white-space:nowrap;vertical-align:middle}.wp-embed-comments,.wp-embed-share{display:inline}.wp-embed-comments a,.wp-embed-share-tab-button{display:inline-block}.wp-embed-meta a:hover{text-decoration:none;color:#0073aa}.wp-embed-comments a{line-height:25px}.wp-embed-comments+.wp-embed-share{margin-left:10px}.wp-embed-share-dialog{position:absolute;top:0;left:0;right:0;bottom:0;background-color:#222;background-color:rgba(10,10,10,.9);color:#fff;opacity:1;-webkit-transition:opacity .25s ease-in-out;transition:opacity .25s ease-in-out}.wp-embed-share-dialog.hidden{opacity:0;visibility:hidden}.wp-embed-share-dialog-close,.wp-embed-share-dialog-open{margin:-8px 0 0;padding:0;background:0 0;border:none;cursor:pointer;outline:0}.wp-embed-share-dialog-close .dashicons,.wp-embed-share-dialog-open .dashicons{padding:4px}.wp-embed-share-dialog-open .dashicons{top:8px}.wp-embed-share-dialog-close:focus .dashicons,.wp-embed-share-dialog-open:focus .dashicons{-webkit-box-shadow:0 0 0 1px #5b9dd9,0 0 2px 1px rgba(30,140,190,.8);box-shadow:0 0 0 1px #5b9dd9,0 0 2px 1px rgba(30,140,190,.8);-webkit-border-radius:100%;border-radius:100%}.wp-embed-share-dialog-close{position:absolute;top:20px;right:20px;font-size:22px}.wp-embed-share-dialog-close:hover{text-decoration:none}.wp-embed-share-dialog-close .dashicons{height:24px;width:24px;-webkit-background-size:24px 24px;background-size:24px}.wp-embed-share-dialog-content{height:100%;-webkit-transform-style:preserve-3d;transform-style:preserve-3d;overflow:hidden}.wp-embed-share-dialog-text{margin-top:25px;padding:20px}.wp-embed-share-tabs{margin:0 0 20px;padding:0;list-style:none}.wp-embed-share-tab-button button{margin:0;padding:0;border:none;background:0 0;font-size:1pc;line-height:1.3;color:#aaa;cursor:pointer;-webkit-transition:color .1s ease-in;transition:color .1s ease-in}.wp-embed-share-tab-button [aria-selected=true],.wp-embed-share-tab-button button:hover{color:#fff}.wp-embed-share-tab-button+.wp-embed-share-tab-button{margin:0 0 0 10px;padding:0 0 0 11px;border-left:1px solid #aaa}.wp-embed-share-tab[aria-hidden=true]{display:none}p.wp-embed-share-description{margin:0;font-size:14px;line-height:1;font-style:italic;color:#aaa}.wp-embed-share-input{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;width:100%;border:none;height:28px;margin:0 0 10px;padding:0 5px;font:400 14px/1.5 'Open Sans',sans-serif;resize:none;cursor:text}textarea.wp-embed-share-input{height:72px}html[dir=rtl] .wp-embed-featured-image.square{float:right;margin-right:0;margin-left:20px}html[dir=rtl] .wp-embed-site-title a{padding-left:0;padding-right:35px}html[dir=rtl] .wp-embed-site-icon{margin-right:0;margin-left:10px;left:auto;right:0}html[dir=rtl] .wp-embed-meta{text-align:left}html[dir=rtl] .wp-embed-share{margin-left:0;margin-right:10px}html[dir=rtl] .wp-embed-share-dialog-close{right:auto;left:20px}html[dir=rtl] .wp-embed-share-tab-button+.wp-embed-share-tab-button{margin:0 10px 0 0;padding:0 11px 0 0;border-left:none;border-right:1px solid #aaa}
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<?php
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}
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?>
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</style>
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<?php
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}
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/**
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* Prints the JavaScript in the embed iframe header.
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*
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* @since 4.4.0
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*/
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function print_embed_scripts() {
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?>
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<script type="text/javascript">
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<?php
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if ( SCRIPT_DEBUG ) {
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readfile( ABSPATH . WPINC . "/js/wp-embed-template.js" );
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} else {
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/*
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* If you're looking at a src version of this file, you'll see an "include"
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* statement below. This is used by the `grunt build` process to directly
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* include a minified version of wp-embed-template.js, instead of using the
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* readfile() method from above.
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*
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* If you're looking at a build version of this file, you'll see a string of
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* minified JavaScript. If you need to debug it, please turn on SCRIPT_DEBUG
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* and edit wp-embed-template.js directly.
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*/
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?>
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!function(a,b){"use strict";function c(b,c){a.parent.postMessage({message:b,value:c,secret:g},"*")}function d(){function d(){k.className=k.className.replace("hidden",""),n[0].select()}function e(){k.className+=" hidden",b.querySelector(".wp-embed-share-dialog-open").focus()}function f(a){var c=b.querySelector('.wp-embed-share-tab-button [aria-selected="true"]');c.setAttribute("aria-selected","false"),b.querySelector("#"+c.getAttribute("aria-controls")).setAttribute("aria-hidden","true"),a.target.setAttribute("aria-selected","true"),b.querySelector("#"+a.target.getAttribute("aria-controls")).setAttribute("aria-hidden","false")}function g(a){var c,d,e=a.target,f=e.parentElement.previousElementSibling,g=e.parentElement.nextElementSibling;if(37===a.keyCode)c=f;else{if(39!==a.keyCode)return!1;c=g}"rtl"===b.documentElement.getAttribute("dir")&&(c=c===f?g:f),c&&(d=c.firstElementChild,e.setAttribute("tabindex","-1"),e.setAttribute("aria-selected",!1),b.querySelector("#"+e.getAttribute("aria-controls")).setAttribute("aria-hidden","true"),d.setAttribute("tabindex","0"),d.setAttribute("aria-selected","true"),d.focus(),b.querySelector("#"+d.getAttribute("aria-controls")).setAttribute("aria-hidden","false"))}function h(a){var b,d=a.target;b=d.hasAttribute("href")?d.getAttribute("href"):d.parentElement.getAttribute("href"),c("link",b),a.preventDefault()}if(!i){i=!0;var j,k=b.querySelector(".wp-embed-share-dialog"),l=b.querySelector(".wp-embed-share-dialog-open"),m=b.querySelector(".wp-embed-share-dialog-close"),n=b.querySelectorAll(".wp-embed-share-input"),o=b.querySelectorAll(".wp-embed-share-tab-button button"),p=b.getElementsByTagName("a");if(n)for(j=0;j<n.length;j++)n[j].addEventListener("click",function(a){a.target.select()});if(l&&l.addEventListener("click",function(a){d(),a.preventDefault()}),m&&m.addEventListener("click",function(a){e(),a.preventDefault()}),o)for(j=0;j<o.length;j++)o[j].addEventListener("click",f),o[j].addEventListener("keydown",g);if(b.addEventListener("keydown",function(a){27===a.keyCode&&-1===k.className.indexOf("hidden")&&e()},!1),a.self!==a.top)for(c("height",Math.ceil(b.body.getBoundingClientRect().height)),j=0;j<p.length;j++)p[j].addEventListener("click",h)}}function e(){a.self!==a.top&&(clearTimeout(f),f=setTimeout(function(){c("height",Math.ceil(b.body.getBoundingClientRect().height))},100))}var f,g=a.location.hash.replace(/.*secret=([\d\w]{10}).*/,"$1"),h=b.querySelector&&a.addEventListener,i=!1;h&&(b.documentElement.className=b.documentElement.className.replace(/\bno-js\b/,"")+" js",b.addEventListener("DOMContentLoaded",d,!1),a.addEventListener("load",d,!1),a.addEventListener("resize",e,!1))}(window,document);
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<?php
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}
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?>
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</script>
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<?php
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}
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/**
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* Prepare the oembed HTML to be displayed in an RSS feed.
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*
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* @since 4.4.0
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* @access private
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*
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* @param string $content The content to filter.
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* @return string The filtered content.
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*/
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function _oembed_filter_feed_content( $content ) {
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return str_replace( '<iframe sandbox="allow-scripts" security="restricted" style="display:none;"', '<iframe sandbox="allow-scripts" security="restricted"', $content );
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}
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