<?php
/**
- * API for fetching the HTML to embed remote content based on a provided URL.
- * Used internally by the {@link WP_Embed} class, but is designed to be generic.
+ * API for fetching the HTML to embed remote content based on a provided URL
*
- * @link http://codex.wordpress.org/oEmbed oEmbed Codex Article
+ * Used internally by the WP_Embed class, but is designed to be generic.
+ *
+ * @link https://codex.wordpress.org/oEmbed oEmbed Codex Article
* @link http://oembed.com/ oEmbed Homepage
*
* @package WordPress
*/
/**
- * oEmbed class.
+ * Core class used to implement oEmbed functionality.
*
- * @package WordPress
- * @subpackage oEmbed
* @since 2.9.0
*/
class WP_oEmbed {
- var $providers = array();
/**
- * PHP4 constructor
+ * A list of oEmbed providers.
+ *
+ * @since 2.9.0
+ * @access public
+ * @var array
+ */
+ public $providers = array();
+
+ /**
+ * A list of an early oEmbed providers.
+ *
+ * @since 4.0.0
+ * @access public
+ * @static
+ * @var array
+ */
+ public static $early_providers = array();
+
+ /**
+ * A list of private/protected methods, used for backwards compatibility.
+ *
+ * @since 4.2.0
+ * @access private
+ * @var array
+ */
+ private $compat_methods = array( '_fetch_with_format', '_parse_json', '_parse_xml', '_parse_body' );
+
+ /**
+ * Constructor.
+ *
+ * @since 2.9.0
+ * @access public
*/
- function WP_oEmbed() {
- return $this->__construct();
+ public function __construct() {
+ $host = urlencode( home_url() );
+ $providers = array(
+ '#http://((m|www)\.)?youtube\.com/watch.*#i' => array( 'http://www.youtube.com/oembed', true ),
+ '#https://((m|www)\.)?youtube\.com/watch.*#i' => array( 'http://www.youtube.com/oembed?scheme=https', true ),
+ '#http://((m|www)\.)?youtube\.com/playlist.*#i' => array( 'http://www.youtube.com/oembed', true ),
+ '#https://((m|www)\.)?youtube\.com/playlist.*#i' => array( 'http://www.youtube.com/oembed?scheme=https', true ),
+ '#http://youtu\.be/.*#i' => array( 'http://www.youtube.com/oembed', true ),
+ '#https://youtu\.be/.*#i' => array( 'http://www.youtube.com/oembed?scheme=https', true ),
+ '#https?://(.+\.)?vimeo\.com/.*#i' => array( 'http://vimeo.com/api/oembed.{format}', true ),
+ '#https?://(www\.)?dailymotion\.com/.*#i' => array( 'https://www.dailymotion.com/services/oembed', true ),
+ '#https?://dai.ly/.*#i' => array( 'https://www.dailymotion.com/services/oembed', true ),
+ '#https?://(www\.)?flickr\.com/.*#i' => array( 'https://www.flickr.com/services/oembed/', true ),
+ '#https?://flic\.kr/.*#i' => array( 'https://www.flickr.com/services/oembed/', true ),
+ '#https?://(.+\.)?smugmug\.com/.*#i' => array( 'http://api.smugmug.com/services/oembed/', true ),
+ '#https?://(www\.)?hulu\.com/watch/.*#i' => array( 'http://www.hulu.com/api/oembed.{format}', true ),
+ 'http://i*.photobucket.com/albums/*' => array( 'http://api.photobucket.com/oembed', false ),
+ 'http://gi*.photobucket.com/groups/*' => array( 'http://api.photobucket.com/oembed', false ),
+ '#https?://(www\.)?scribd\.com/doc/.*#i' => array( 'http://www.scribd.com/services/oembed', true ),
+ '#https?://wordpress.tv/.*#i' => array( 'http://wordpress.tv/oembed/', true ),
+ '#https?://(.+\.)?polldaddy\.com/.*#i' => array( 'https://polldaddy.com/oembed/', true ),
+ '#https?://poll\.fm/.*#i' => array( 'https://polldaddy.com/oembed/', true ),
+ '#https?://(www\.)?funnyordie\.com/videos/.*#i' => array( 'http://www.funnyordie.com/oembed', true ),
+ '#https?://(www\.)?twitter\.com/.+?/status(es)?/.*#i' => array( 'https://publish.twitter.com/oembed', true ),
+ '#https?://(www\.)?twitter\.com/.+?/timelines/.*#i' => array( 'https://publish.twitter.com/oembed', true ),
+ '#https?://(www\.)?twitter\.com/i/moments/.*#i' => array( 'https://publish.twitter.com/oembed', true ),
+ '#https?://vine.co/v/.*#i' => array( 'https://vine.co/oembed.{format}', true ),
+ '#https?://(www\.)?soundcloud\.com/.*#i' => array( 'http://soundcloud.com/oembed', true ),
+ '#https?://(.+?\.)?slideshare\.net/.*#i' => array( 'https://www.slideshare.net/api/oembed/2', true ),
+ '#https?://(www\.)?instagr(\.am|am\.com)/p/.*#i' => array( 'https://api.instagram.com/oembed', true ),
+ '#https?://(open|play)\.spotify\.com/.*#i' => array( 'https://embed.spotify.com/oembed/', true ),
+ '#https?://(.+\.)?imgur\.com/.*#i' => array( 'http://api.imgur.com/oembed', true ),
+ '#https?://(www\.)?meetu(\.ps|p\.com)/.*#i' => array( 'http://api.meetup.com/oembed', true ),
+ '#https?://(www\.)?issuu\.com/.+/docs/.+#i' => array( 'http://issuu.com/oembed_wp', true ),
+ '#https?://(www\.)?collegehumor\.com/video/.*#i' => array( 'http://www.collegehumor.com/oembed.{format}', true ),
+ '#https?://(www\.)?mixcloud\.com/.*#i' => array( 'http://www.mixcloud.com/oembed', true ),
+ '#https?://(www\.|embed\.)?ted\.com/talks/.*#i' => array( 'http://www.ted.com/talks/oembed.{format}', true ),
+ '#https?://(www\.)?(animoto|video214)\.com/play/.*#i' => array( 'https://animoto.com/oembeds/create', true ),
+ '#https?://(.+)\.tumblr\.com/post/.*#i' => array( 'https://www.tumblr.com/oembed/1.0', true ),
+ '#https?://(www\.)?kickstarter\.com/projects/.*#i' => array( 'https://www.kickstarter.com/services/oembed', true ),
+ '#https?://kck\.st/.*#i' => array( 'https://www.kickstarter.com/services/oembed', true ),
+ '#https?://cloudup\.com/.*#i' => array( 'https://cloudup.com/oembed', true ),
+ '#https?://(www\.)?reverbnation\.com/.*#i' => array( 'https://www.reverbnation.com/oembed', true ),
+ '#https?://videopress.com/v/.*#' => array( 'https://public-api.wordpress.com/oembed/1.0/?for=' . $host, true ),
+ '#https?://(www\.)?reddit\.com/r/[^/]+/comments/.*#i' => array( 'https://www.reddit.com/oembed', true ),
+ '#https?://(www\.)?speakerdeck\.com/.*#i' => array( 'https://speakerdeck.com/oembed.{format}', true ),
+ );
+
+ if ( ! empty( self::$early_providers['add'] ) ) {
+ foreach ( self::$early_providers['add'] as $format => $data ) {
+ $providers[ $format ] = $data;
+ }
+ }
+
+ if ( ! empty( self::$early_providers['remove'] ) ) {
+ foreach ( self::$early_providers['remove'] as $format ) {
+ unset( $providers[ $format ] );
+ }
+ }
+
+ self::$early_providers = array();
+
+ /**
+ * Filter the list of whitelisted oEmbed providers.
+ *
+ * Since WordPress 4.4, oEmbed discovery is enabled for all users and allows embedding of sanitized
+ * iframes. The providers in this list are whitelisted, meaning they are trusted and allowed to
+ * embed any content, such as iframes, videos, JavaScript, and arbitrary HTML.
+ *
+ * Supported providers:
+ *
+ * | Provider | Flavor | Supports HTTPS | Since |
+ * | ------------ | --------------------- | :------------: | --------- |
+ * | Dailymotion | dailymotion.com | Yes | 2.9.0 |
+ * | Flickr | flickr.com | Yes | 2.9.0 |
+ * | Hulu | hulu.com | Yes | 2.9.0 |
+ * | Photobucket | photobucket.com | No | 2.9.0 |
+ * | Scribd | scribd.com | Yes | 2.9.0 |
+ * | Vimeo | vimeo.com | Yes | 2.9.0 |
+ * | WordPress.tv | wordpress.tv | Yes | 2.9.0 |
+ * | YouTube | youtube.com/watch | Yes | 2.9.0 |
+ * | Funny or Die | funnyordie.com | Yes | 3.0.0 |
+ * | Polldaddy | polldaddy.com | Yes | 3.0.0 |
+ * | SmugMug | smugmug.com | Yes | 3.0.0 |
+ * | YouTube | youtu.be | Yes | 3.0.0 |
+ * | Twitter | twitter.com | Yes | 3.4.0 |
+ * | Instagram | instagram.com | Yes | 3.5.0 |
+ * | Instagram | instagr.am | Yes | 3.5.0 |
+ * | Slideshare | slideshare.net | Yes | 3.5.0 |
+ * | SoundCloud | soundcloud.com | Yes | 3.5.0 |
+ * | Dailymotion | dai.ly | Yes | 3.6.0 |
+ * | Flickr | flic.kr | Yes | 3.6.0 |
+ * | Spotify | spotify.com | Yes | 3.6.0 |
+ * | Imgur | imgur.com | Yes | 3.9.0 |
+ * | Meetup.com | meetup.com | Yes | 3.9.0 |
+ * | Meetup.com | meetu.ps | Yes | 3.9.0 |
+ * | Animoto | animoto.com | Yes | 4.0.0 |
+ * | Animoto | video214.com | Yes | 4.0.0 |
+ * | CollegeHumor | collegehumor.com | Yes | 4.0.0 |
+ * | Issuu | issuu.com | Yes | 4.0.0 |
+ * | Mixcloud | mixcloud.com | Yes | 4.0.0 |
+ * | Polldaddy | poll.fm | Yes | 4.0.0 |
+ * | TED | ted.com | Yes | 4.0.0 |
+ * | YouTube | youtube.com/playlist | Yes | 4.0.0 |
+ * | Vine | vine.co | Yes | 4.1.0 |
+ * | Tumblr | tumblr.com | Yes | 4.2.0 |
+ * | Kickstarter | kickstarter.com | Yes | 4.2.0 |
+ * | Kickstarter | kck.st | Yes | 4.2.0 |
+ * | Cloudup | cloudup.com | Yes | 4.4.0 |
+ * | ReverbNation | reverbnation.com | Yes | 4.4.0 |
+ * | VideoPress | videopress.com | Yes | 4.4.0 |
+ * | Reddit | reddit.com | Yes | 4.4.0 |
+ * | Speaker Deck | speakerdeck.com | Yes | 4.4.0 |
+ * | Twitter | twitter.com/timelines | Yes | 4.5.0 |
+ * | Twitter | twitter.com/moments | Yes | 4.5.0 |
+ *
+ * No longer supported providers:
+ *
+ * | Provider | Flavor | Supports HTTPS | Since | Removed |
+ * | ------------ | -------------------- | :------------: | --------- | --------- |
+ * | Qik | qik.com | Yes | 2.9.0 | 3.9.0 |
+ * | Viddler | viddler.com | Yes | 2.9.0 | 4.0.0 |
+ * | Revision3 | revision3.com | No | 2.9.0 | 4.2.0 |
+ * | Blip | blip.tv | No | 2.9.0 | 4.4.0 |
+ * | Rdio | rdio.com | Yes | 3.6.0 | 4.4.1 |
+ * | Rdio | rd.io | Yes | 3.6.0 | 4.4.1 |
+ *
+ * @see wp_oembed_add_provider()
+ *
+ * @since 2.9.0
+ *
+ * @param array $providers An array of popular oEmbed providers.
+ */
+ $this->providers = apply_filters( 'oembed_providers', $providers );
+
+ // Fix any embeds that contain new lines in the middle of the HTML which breaks wpautop().
+ add_filter( 'oembed_dataparse', array($this, '_strip_newlines'), 10, 3 );
}
/**
- * PHP5 constructor
+ * Exposes private/protected methods for backwards compatibility.
*
- * @uses apply_filters() Filters a list of pre-defined oEmbed providers.
+ * @since 4.0.0
+ * @access public
+ *
+ * @param callable $name Method to call.
+ * @param array $arguments Arguments to pass when calling.
+ * @return mixed|bool Return value of the callback, false otherwise.
*/
- function __construct() {
- // List out some popular sites that support oEmbed.
- // The WP_Embed class disables discovery for non-unfiltered_html users, so only providers in this array will be used for them.
- // Add to this list using the wp_oembed_add_provider() function (see it's PHPDoc for details).
- $this->providers = apply_filters( 'oembed_providers', array(
- '#http://(www\.)?youtube.com/watch.*#i' => array( 'http://www.youtube.com/oembed', true ),
- 'http://blip.tv/file/*' => array( 'http://blip.tv/oembed/', false ),
- '#http://(www\.)?vimeo\.com/.*#i' => array( 'http://www.vimeo.com/api/oembed.{format}', true ),
- '#http://(www\.)?dailymotion\.com/.*#i' => array( 'http://www.dailymotion.com/api/oembed', true ),
- '#http://(www\.)?flickr\.com/.*#i' => array( 'http://www.flickr.com/services/oembed/', true ),
- '#http://(www\.)?hulu\.com/watch/.*#i' => array( 'http://www.hulu.com/api/oembed.{format}', true ),
- '#http://(www\.)?viddler\.com/.*#i' => array( 'http://lab.viddler.com/services/oembed/', true ),
- 'http://qik.com/*' => array( 'http://qik.com/api/oembed.{format}', false ),
- 'http://revision3.com/*' => array( 'http://revision3.com/api/oembed/', false ),
- 'http://i*.photobucket.com/albums/*' => array( 'http://photobucket.com/oembed', false ),
- 'http://gi*.photobucket.com/groups/*' => array( 'http://photobucket.com/oembed', false ),
- '#http://(www\.)?scribd\.com/.*#i' => array( 'http://www.scribd.com/services/oembed', true ),
- 'http://wordpress.tv/*' => array( 'http://wordpress.tv/oembed/', false ),
- ) );
-
- // Fix Scribd embeds. They contain new lines in the middle of the HTML which breaks wpautop().
- add_filter( 'oembed_dataparse', array(&$this, 'strip_scribd_newlines'), 10, 3 );
+ public function __call( $name, $arguments ) {
+ if ( in_array( $name, $this->compat_methods ) ) {
+ return call_user_func_array( array( $this, $name ), $arguments );
+ }
+ return false;
}
/**
- * The do-it-all function that takes a URL and attempts to return the HTML.
+ * Takes a URL and returns the corresponding oEmbed provider's URL, if there is one.
+ *
+ * @since 4.0.0
+ * @access public
*
* @see WP_oEmbed::discover()
- * @see WP_oEmbed::fetch()
- * @see WP_oEmbed::data2html()
*
- * @param string $url The URL to the content that should be attempted to be embedded.
- * @param array $args Optional arguments. Usually passed from a shortcode.
- * @return bool|string False on failure, otherwise the UNSANITIZED (and potentially unsafe) HTML that should be used to embed.
+ * @param string $url The URL to the content.
+ * @param string|array $args Optional provider arguments.
+ * @return false|string False on failure, otherwise the oEmbed provider URL.
*/
- function get_html( $url, $args = '' ) {
+ public function get_provider( $url, $args = '' ) {
+
$provider = false;
if ( !isset($args['discover']) )
list( $providerurl, $regex ) = $data;
// Turn the asterisk-type provider URLs into regex
- if ( !$regex )
+ if ( !$regex ) {
$matchmask = '#' . str_replace( '___wildcard___', '(.+)', preg_quote( str_replace( '*', '___wildcard___', $matchmask ), '#' ) ) . '#i';
+ $matchmask = preg_replace( '|^#http\\\://|', '#https?\://', $matchmask );
+ }
if ( preg_match( $matchmask, $url ) ) {
$provider = str_replace( '{format}', 'json', $providerurl ); // JSON is easier to deal with than XML
if ( !$provider && $args['discover'] )
$provider = $this->discover( $url );
- if ( !$provider || false === $data = $this->fetch( $provider, $url, $args ) )
+ return $provider;
+ }
+
+ /**
+ * Adds an oEmbed provider.
+ *
+ * The provider is removed just-in-time when wp_oembed_add_provider() is called before
+ * the {@see 'plugins_loaded'} hook.
+ *
+ * The just-in-time addition is for the benefit of the {@see 'oembed_providers'} filter.
+ *
+ * @static
+ * @since 4.0.0
+ * @access public
+ *
+ * @see wp_oembed_add_provider()
+ *
+ * @param string $format Format of URL that this provider can handle. You can use
+ * asterisks as wildcards.
+ * @param string $provider The URL to the oEmbed provider..
+ * @param bool $regex Optional. Whether the $format parameter is in a regex format.
+ * Default false.
+ */
+ public static function _add_provider_early( $format, $provider, $regex = false ) {
+ if ( empty( self::$early_providers['add'] ) ) {
+ self::$early_providers['add'] = array();
+ }
+
+ self::$early_providers['add'][ $format ] = array( $provider, $regex );
+ }
+
+ /**
+ * Removes an oEmbed provider.
+ *
+ * The provider is removed just-in-time when wp_oembed_remove_provider() is called before
+ * the {@see 'plugins_loaded'} hook.
+ *
+ * The just-in-time removal is for the benefit of the {@see 'oembed_providers'} filter.
+ *
+ * @since 4.0.0
+ * @access public
+ * @static
+ *
+ * @see wp_oembed_remove_provider()
+ *
+ * @param string $format The format of URL that this provider can handle. You can use
+ * asterisks as wildcards.
+ */
+ public static function _remove_provider_early( $format ) {
+ if ( empty( self::$early_providers['remove'] ) ) {
+ self::$early_providers['remove'] = array();
+ }
+
+ self::$early_providers['remove'][] = $format;
+ }
+
+ /**
+ * The do-it-all function that takes a URL and attempts to return the HTML.
+ *
+ * @see WP_oEmbed::fetch()
+ * @see WP_oEmbed::data2html()
+ *
+ * @since 2.9.0
+ * @access public
+ *
+ * @param string $url The URL to the content that should be attempted to be embedded.
+ * @param array|string $args Optional. Arguments, usually passed from a shortcode. Default empty.
+ * @return false|string False on failure, otherwise the UNSANITIZED (and potentially unsafe) HTML that should be used to embed.
+ */
+ public function get_html( $url, $args = '' ) {
+ /**
+ * Filters the oEmbed result before any HTTP requests are made.
+ *
+ * This allows one to short-circuit the default logic, perhaps by
+ * replacing it with a routine that is more optimal for your setup.
+ *
+ * Passing a non-null value to the filter will effectively short-circuit retrieval,
+ * returning the passed value instead.
+ *
+ * @since 4.5.3
+ *
+ * @param null|string $result The UNSANITIZED (and potentially unsafe) HTML that should be used to embed. Default null.
+ * @param string $url The URL to the content that should be attempted to be embedded.
+ * @param array $args Optional. Arguments, usually passed from a shortcode. Default empty.
+ */
+ $pre = apply_filters( 'pre_oembed_result', null, $url, $args );
+
+ if ( null !== $pre ) {
+ return $pre;
+ }
+
+ $provider = $this->get_provider( $url, $args );
+
+ if ( ! $provider || false === $data = $this->fetch( $provider, $url, $args ) ) {
return false;
+ }
+ /**
+ * Filter the HTML returned by the oEmbed provider.
+ *
+ * @since 2.9.0
+ *
+ * @param string $data The returned oEmbed HTML.
+ * @param string $url URL of the content to be embedded.
+ * @param array $args Optional arguments, usually passed from a shortcode.
+ */
return apply_filters( 'oembed_result', $this->data2html( $data, $url ), $url, $args );
}
/**
- * Attempts to find oEmbed provider discovery <link> tags at the given URL.
+ * Attempts to discover link tags at the given URL for an oEmbed provider.
*
- * @param string $url The URL that should be inspected for discovery <link> tags.
- * @return bool|string False on failure, otherwise the oEmbed provider URL.
+ * @since 2.9.0
+ * @access public
+ *
+ * @param string $url The URL that should be inspected for discovery `<link>` tags.
+ * @return false|string False on failure, otherwise the oEmbed provider URL.
*/
- function discover( $url ) {
+ public function discover( $url ) {
$providers = array();
+ $args = array(
+ 'limit_response_size' => 153600, // 150 KB
+ );
+
+ /**
+ * Filter oEmbed remote get arguments.
+ *
+ * @since 4.0.0
+ *
+ * @see WP_Http::request()
+ *
+ * @param array $args oEmbed remote get arguments.
+ * @param string $url URL to be inspected.
+ */
+ $args = apply_filters( 'oembed_remote_get_args', $args, $url );
// Fetch URL content
- if ( $html = wp_remote_retrieve_body( wp_remote_get( $url ) ) ) {
-
- // <link> types that contain oEmbed provider URLs
+ $request = wp_safe_remote_get( $url, $args );
+ if ( $html = wp_remote_retrieve_body( $request ) ) {
+
+ /**
+ * Filter the link types that contain oEmbed provider URLs.
+ *
+ * @since 2.9.0
+ *
+ * @param array $format Array of oEmbed link types. Accepts 'application/json+oembed',
+ * 'text/xml+oembed', and 'application/xml+oembed' (incorrect,
+ * used by at least Vimeo).
+ */
$linktypes = apply_filters( 'oembed_linktypes', array(
'application/json+oembed' => 'json',
'text/xml+oembed' => 'xml',
- 'application/xml+oembed' => 'xml', // Incorrect, but used by at least Vimeo
+ 'application/xml+oembed' => 'xml',
) );
// Strip <body>
- $html = substr( $html, 0, stripos( $html, '</head>' ) );
+ if ( $html_head_end = stripos( $html, '</head>' ) ) {
+ $html = substr( $html, 0, $html_head_end );
+ }
// Do a quick check
$tagfound = false;
}
}
- if ( $tagfound && preg_match_all( '/<link([^<>]+)>/i', $html, $links ) ) {
+ if ( $tagfound && preg_match_all( '#<link([^<>]+)/?>#iU', $html, $links ) ) {
foreach ( $links[1] as $link ) {
$atts = shortcode_parse_atts( $link );
if ( !empty($atts['type']) && !empty($linktypes[$atts['type']]) && !empty($atts['href']) ) {
- $providers[$linktypes[$atts['type']]] = $atts['href'];
+ $providers[$linktypes[$atts['type']]] = htmlspecialchars_decode( $atts['href'] );
// Stop here if it's JSON (that's all we need)
if ( 'json' == $linktypes[$atts['type']] )
/**
* Connects to a oEmbed provider and returns the result.
*
- * @param string $provider The URL to the oEmbed provider.
- * @param string $url The URL to the content that is desired to be embedded.
- * @param array $args Optional arguments. Usually passed from a shortcode.
- * @return bool|object False on failure, otherwise the result in the form of an object.
+ * @since 2.9.0
+ * @access public
+ *
+ * @param string $provider The URL to the oEmbed provider.
+ * @param string $url The URL to the content that is desired to be embedded.
+ * @param array|string $args Optional. Arguments, usually passed from a shortcode. Default empty.
+ * @return false|object False on failure, otherwise the result in the form of an object.
*/
- function fetch( $provider, $url, $args = '' ) {
- $args = wp_parse_args( $args, wp_embed_defaults() );
-
- $provider = add_query_arg( 'format', 'json', $provider ); // JSON is easier to deal with than XML
+ public function fetch( $provider, $url, $args = '' ) {
+ $args = wp_parse_args( $args, wp_embed_defaults( $url ) );
- $provider = add_query_arg( 'maxwidth', $args['width'], $provider );
- $provider = add_query_arg( 'maxheight', $args['height'], $provider );
+ $provider = add_query_arg( 'maxwidth', (int) $args['width'], $provider );
+ $provider = add_query_arg( 'maxheight', (int) $args['height'], $provider );
$provider = add_query_arg( 'url', urlencode($url), $provider );
- if ( !$result = wp_remote_retrieve_body( wp_remote_get( $provider ) ) )
+ /**
+ * Filter the oEmbed URL to be fetched.
+ *
+ * @since 2.9.0
+ *
+ * @param string $provider URL of the oEmbed provider.
+ * @param string $url URL of the content to be embedded.
+ * @param array $args Optional arguments, usually passed from a shortcode.
+ */
+ $provider = apply_filters( 'oembed_fetch_url', $provider, $url, $args );
+
+ foreach ( array( 'json', 'xml' ) as $format ) {
+ $result = $this->_fetch_with_format( $provider, $format );
+ if ( is_wp_error( $result ) && 'not-implemented' == $result->get_error_code() )
+ continue;
+ return ( $result && ! is_wp_error( $result ) ) ? $result : false;
+ }
+ return false;
+ }
+
+ /**
+ * Fetches result from an oEmbed provider for a specific format and complete provider URL
+ *
+ * @since 3.0.0
+ * @access private
+ *
+ * @param string $provider_url_with_args URL to the provider with full arguments list (url, maxheight, etc.)
+ * @param string $format Format to use
+ * @return false|object|WP_Error False on failure, otherwise the result in the form of an object.
+ */
+ private function _fetch_with_format( $provider_url_with_args, $format ) {
+ $provider_url_with_args = add_query_arg( 'format', $format, $provider_url_with_args );
+
+ /** This filter is documented in wp-includes/class-oembed.php */
+ $args = apply_filters( 'oembed_remote_get_args', array(), $provider_url_with_args );
+
+ $response = wp_safe_remote_get( $provider_url_with_args, $args );
+ if ( 501 == wp_remote_retrieve_response_code( $response ) )
+ return new WP_Error( 'not-implemented' );
+ if ( ! $body = wp_remote_retrieve_body( $response ) )
return false;
+ $parse_method = "_parse_$format";
+ return $this->$parse_method( $body );
+ }
- $result = trim( $result );
+ /**
+ * Parses a json response body.
+ *
+ * @since 3.0.0
+ * @access private
+ *
+ * @param string $response_body
+ * @return object|false
+ */
+ private function _parse_json( $response_body ) {
+ $data = json_decode( trim( $response_body ) );
+ return ( $data && is_object( $data ) ) ? $data : false;
+ }
- // JSON?
- // Example content: http://vimeo.com/api/oembed.json?url=http%3A%2F%2Fvimeo.com%2F240975
- if ( $data = json_decode($result) ) {
- return $data;
- }
+ /**
+ * Parses an XML response body.
+ *
+ * @since 3.0.0
+ * @access private
+ *
+ * @param string $response_body
+ * @return object|false
+ */
+ private function _parse_xml( $response_body ) {
+ if ( ! function_exists( 'libxml_disable_entity_loader' ) )
+ return false;
- // Must be XML. Only parse it if PHP5 is installed. (PHP4 isn't worth the trouble.)
- // Example content: http://vimeo.com/api/oembed.xml?url=http%3A%2F%2Fvimeo.com%2F240975
- elseif ( function_exists('simplexml_load_string') ) {
- $errors = libxml_use_internal_errors( 'true' );
+ $loader = libxml_disable_entity_loader( true );
+ $errors = libxml_use_internal_errors( true );
- $data = simplexml_load_string( $result );
+ $return = $this->_parse_xml_body( $response_body );
- libxml_use_internal_errors( $errors );
+ libxml_use_internal_errors( $errors );
+ libxml_disable_entity_loader( $loader );
- if ( is_object($data) )
- return $data;
+ return $return;
+ }
+
+ /**
+ * Serves as a helper function for parsing an XML response body.
+ *
+ * @since 3.6.0
+ * @access private
+ *
+ * @param string $response_body
+ * @return object|false
+ */
+ private function _parse_xml_body( $response_body ) {
+ if ( ! function_exists( 'simplexml_import_dom' ) || ! class_exists( 'DOMDocument', false ) )
+ return false;
+
+ $dom = new DOMDocument;
+ $success = $dom->loadXML( $response_body );
+ if ( ! $success )
+ return false;
+
+ if ( isset( $dom->doctype ) )
+ return false;
+
+ foreach ( $dom->childNodes as $child ) {
+ if ( XML_DOCUMENT_TYPE_NODE === $child->nodeType )
+ return false;
}
- return false;
+ $xml = simplexml_import_dom( $dom );
+ if ( ! $xml )
+ return false;
+
+ $return = new stdClass;
+ foreach ( $xml as $key => $value ) {
+ $return->$key = (string) $value;
+ }
+
+ return $return;
}
/**
- * Converts a data object from {@link WP_oEmbed::fetch()} and returns the HTML.
+ * Converts a data object from WP_oEmbed::fetch() and returns the HTML.
+ *
+ * @since 2.9.0
+ * @access public
*
* @param object $data A data object result from an oEmbed provider.
* @param string $url The URL to the content that is desired to be embedded.
- * @return bool|string False on error, otherwise the HTML needed to embed.
+ * @return false|string False on error, otherwise the HTML needed to embed.
*/
- function data2html( $data, $url ) {
- if ( !is_object($data) || empty($data->type) )
+ public function data2html( $data, $url ) {
+ if ( ! is_object( $data ) || empty( $data->type ) )
return false;
+ $return = false;
+
switch ( $data->type ) {
case 'photo':
- if ( empty($data->url) || empty($data->width) || empty($data->height) )
- return false;
+ if ( empty( $data->url ) || empty( $data->width ) || empty( $data->height ) )
+ break;
+ if ( ! is_string( $data->url ) || ! is_numeric( $data->width ) || ! is_numeric( $data->height ) )
+ break;
- $title = ( !empty($data->title) ) ? $data->title : '';
- $return = '<img src="' . esc_attr( clean_url( $data->url ) ) . '" alt="' . esc_attr($title) . '" width="' . esc_attr($data->width) . '" height="' . esc_attr($data->height) . '" />';
+ $title = ! empty( $data->title ) && is_string( $data->title ) ? $data->title : '';
+ $return = '<a href="' . esc_url( $url ) . '"><img src="' . esc_url( $data->url ) . '" alt="' . esc_attr($title) . '" width="' . esc_attr($data->width) . '" height="' . esc_attr($data->height) . '" /></a>';
break;
case 'video':
case 'rich':
- $return = ( !empty($data->html) ) ? $data->html : false;
+ if ( ! empty( $data->html ) && is_string( $data->html ) )
+ $return = $data->html;
break;
case 'link':
- $return = ( !empty($data->title) ) ? '<a href="' . clean_url($url) . '">' . esc_html($data->title) . '</a>' : false;
+ if ( ! empty( $data->title ) && is_string( $data->title ) )
+ $return = '<a href="' . esc_url( $url ) . '">' . esc_html( $data->title ) . '</a>';
break;
- default;
+ default:
$return = false;
}
- // You can use this filter to add support for custom data types or to filter the result
+ /**
+ * Filter the returned oEmbed HTML.
+ *
+ * Use this filter to add support for custom data types, or to filter the result.
+ *
+ * @since 2.9.0
+ *
+ * @param string $return The returned oEmbed HTML.
+ * @param object $data A data object result from an oEmbed provider.
+ * @param string $url The URL of the content to be embedded.
+ */
return apply_filters( 'oembed_dataparse', $return, $data, $url );
}
/**
- * Strip new lines from the HTML if it's a Scribd embed.
+ * Strips any new lines from the HTML.
+ *
+ * @since 2.9.0 as strip_scribd_newlines()
+ * @since 3.0.0
+ * @access public
*
* @param string $html Existing HTML.
* @param object $data Data object from WP_oEmbed::data2html()
* @param string $url The original URL passed to oEmbed.
* @return string Possibly modified $html
*/
- function strip_scribd_newlines( $html, $data, $url ) {
- if ( preg_match( '#http://(www\.)?scribd.com/.*#i', $url ) )
- $html = str_replace( array( "\r\n", "\n" ), '', $html );
+ public function _strip_newlines( $html, $data, $url ) {
+ if ( false === strpos( $html, "\n" ) ) {
+ return $html;
+ }
+
+ $count = 1;
+ $found = array();
+ $token = '__PRE__';
+ $search = array( "\t", "\n", "\r", ' ' );
+ $replace = array( '__TAB__', '__NL__', '__CR__', '__SPACE__' );
+ $tokenized = str_replace( $search, $replace, $html );
- return $html;
+ preg_match_all( '#(<pre[^>]*>.+?</pre>)#i', $tokenized, $matches, PREG_SET_ORDER );
+ foreach ( $matches as $i => $match ) {
+ $tag_html = str_replace( $replace, $search, $match[0] );
+ $tag_token = $token . $i;
+
+ $found[ $tag_token ] = $tag_html;
+ $html = str_replace( $tag_html, $tag_token, $html, $count );
+ }
+
+ $replaced = str_replace( $replace, $search, $html );
+ $stripped = str_replace( array( "\r\n", "\n" ), '', $replaced );
+ $pre = array_values( $found );
+ $tokens = array_keys( $found );
+
+ return str_replace( $tokens, $pre, $stripped );
}
}
/**
- * Returns the initialized {@link WP_oEmbed} object
+ * Returns the initialized WP_oEmbed object.
*
* @since 2.9.0
* @access private
*
- * @see WP_oEmbed
- * @uses WP_oEmbed
+ * @staticvar WP_oEmbed $wp_oembed
*
* @return WP_oEmbed object.
*/
-function &_wp_oembed_get_object() {
- static $wp_oembed;
+function _wp_oembed_get_object() {
+ static $wp_oembed = null;
- if ( is_null($wp_oembed) )
+ if ( is_null( $wp_oembed ) ) {
$wp_oembed = new WP_oEmbed();
-
+ }
return $wp_oembed;
}
-
-?>
\ No newline at end of file
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