providers = apply_filters( 'oembed_providers', array( '#https?://(www\.)?youtube.com/watch.*#i' => array( 'http://www.youtube.com/oembed', true ), 'http://youtu.be/*' => array( 'http://www.youtube.com/oembed', false ), 'http://blip.tv/*' => array( 'http://blip.tv/oembed/', false ), '#https?://(www\.)?vimeo\.com/.*#i' => array( 'http://vimeo.com/api/oembed.{format}', true ), '#https?://(www\.)?dailymotion\.com/.*#i' => array( 'http://www.dailymotion.com/services/oembed', true ), '#https?://(www\.)?flickr\.com/.*#i' => array( 'http://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 ), '#https?://(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 ), '#https?://(www\.)?scribd\.com/.*#i' => array( 'http://www.scribd.com/services/oembed', true ), 'http://wordpress.tv/*' => array( 'http://wordpress.tv/oembed/', false ), '#https?://(.+\.)?polldaddy\.com/.*#i' => array( 'http://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( 'http://api.twitter.com/1/statuses/oembed.{format}', true ), '#https?://(www\.)?soundcloud\.com/.*#i' => array( 'http://soundcloud.com/oembed', true ), '#https?://(www\.)?slideshare.net/*#' => array( 'http://www.slideshare.net/api/oembed/2', true ), '#http://instagr(\.am|am\.com)/p/.*#i' => array( 'http://api.instagram.com/oembed', true ), ) ); // 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 ); } /** * The do-it-all function that takes a URL and attempts to return the HTML. * * @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. */ function get_html( $url, $args = '' ) { $provider = false; if ( !isset($args['discover']) ) $args['discover'] = true; foreach ( $this->providers as $matchmask => $data ) { list( $providerurl, $regex ) = $data; // Turn the asterisk-type provider URLs into regex if ( !$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', $providerurl ); // JSON is easier to deal with than XML break; } } if ( !$provider && $args['discover'] ) $provider = $this->discover( $url ); if ( !$provider || false === $data = $this->fetch( $provider, $url, $args ) ) return false; return apply_filters( 'oembed_result', $this->data2html( $data, $url ), $url, $args ); } /** * Attempts to find oEmbed provider discovery tags at the given URL. * * @param string $url The URL that should be inspected for discovery tags. * @return bool|string False on failure, otherwise the oEmbed provider URL. */ function discover( $url ) { $providers = array(); // Fetch URL content if ( $html = wp_remote_retrieve_body( wp_remote_get( $url, array( 'reject_unsafe_urls' => true ) ) ) ) { // types that contain oEmbed provider URLs $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 ) ); // Strip $html = substr( $html, 0, stripos( $html, '' ) ); // Do a quick check $tagfound = false; foreach ( $linktypes as $linktype => $format ) { if ( stripos($html, $linktype) ) { $tagfound = true; break; } } if ( $tagfound && preg_match_all( '/]+)>/i', $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']; // Stop here if it's JSON (that's all we need) if ( 'json' == $linktypes[$atts['type']] ) break; } } } } // JSON is preferred to XML if ( !empty($providers['json']) ) return $providers['json']; elseif ( !empty($providers['xml']) ) return $providers['xml']; else return false; } /** * 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. */ function fetch( $provider, $url, $args = '' ) { $args = wp_parse_args( $args, wp_embed_defaults() ); $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 ); $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 bool|object False on failure, otherwise the result in the form of an object. */ function _fetch_with_format( $provider_url_with_args, $format ) { $provider_url_with_args = add_query_arg( 'format', $format, $provider_url_with_args ); $response = wp_remote_get( $provider_url_with_args, array( 'reject_unsafe_urls' => true ) ); 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 ); } /** * Parses a json response body. * * @since 3.0.0 * @access private */ function _parse_json( $response_body ) { return ( ( $data = json_decode( trim( $response_body ) ) ) && is_object( $data ) ) ? $data : false; } /** * Parses an XML response body. * * @since 3.0.0 * @access private */ function _parse_xml( $response_body ) { if ( !function_exists('simplexml_load_string') ) { return false; } if ( ! function_exists( 'libxml_disable_entity_loader' ) ) return false; $loader = libxml_disable_entity_loader( true ); $errors = libxml_use_internal_errors( true ); $data = simplexml_load_string( $response_body ); libxml_use_internal_errors( $errors ); $return = false; if ( is_object( $data ) ) { $return = new stdClass; foreach ( $data as $key => $value ) { $return->$key = (string) $value; } } libxml_disable_entity_loader( $loader ); return $return; } /** * Converts a data object from {@link WP_oEmbed::fetch()} and returns the HTML. * * @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. */ 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 ) ) break; if ( ! is_string( $data->url ) || ! is_numeric( $data->width ) || ! is_numeric( $data->height ) ) break; $title = ! empty( $data->title ) && is_string( $data->title ) ? $data->title : ''; $return = '' . esc_attr($title) . ''; break; case 'video': case 'rich': if ( ! empty( $data->html ) && is_string( $data->html ) ) $return = $data->html; break; case 'link': if ( ! empty( $data->title ) && is_string( $data->title ) ) $return = '' . esc_html( $data->title ) . ''; break; default: $return = false; } // You can use this filter to add support for custom data types or to filter the result return apply_filters( 'oembed_dataparse', $return, $data, $url ); } /** * Strip any new lines from the HTML. * * @access private * @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_newlines( $html, $data, $url ) { if ( false !== strpos( $html, "\n" ) ) $html = str_replace( array( "\r\n", "\n" ), '', $html ); return $html; } } /** * Returns the initialized {@link WP_oEmbed} object * * @since 2.9.0 * @access private * * @see WP_oEmbed * @uses WP_oEmbed * * @return WP_oEmbed object. */ function _wp_oembed_get_object() { static $wp_oembed; if ( is_null($wp_oembed) ) $wp_oembed = new WP_oEmbed(); return $wp_oembed; }