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<?php |
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/** |
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* Facebook embeds |
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* |
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* @package automattic/jetpack |
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*/ |
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|
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define( 'JETPACK_FACEBOOK_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/(posts|photos)/([^/]+)?#' ); |
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define( 'JETPACK_FACEBOOK_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/permalink.php\?([^\s]+)#' ); |
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define( 'JETPACK_FACEBOOK_PHOTO_EMBED_REGEX', '#^https?://(www.)?facebook\.com/photo.php\?([^\s]+)#' ); |
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define( 'JETPACK_FACEBOOK_PHOTO_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/photos/([^/]+)?#' ); |
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define( 'JETPACK_FACEBOOK_VIDEO_EMBED_REGEX', '#^https?://(www.)?facebook\.com/(?:video.php|watch\/?)\?([^\s]+)#' ); |
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define( 'JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/videos/([^/]+)?#' ); |
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|
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/* |
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* Example URL: https://www.facebook.com/VenusWilliams/posts/10151647007373076 |
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*/ |
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wp_embed_register_handler( 'facebook', JETPACK_FACEBOOK_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); |
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|
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/* |
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* Example URL: https://www.facebook.com/permalink.php?id=222622504529111&story_fbid=559431180743788 |
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*/ |
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wp_embed_register_handler( 'facebook-alternate', JETPACK_FACEBOOK_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); |
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|
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/* |
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* Photos are handled on a different endpoint; e.g. https://www.facebook.com/photo.php?fbid=10151609960150073&set=a.398410140072.163165.106666030072&type=1 |
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*/ |
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wp_embed_register_handler( 'facebook-photo', JETPACK_FACEBOOK_PHOTO_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); |
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|
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/* |
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* Photos (from pages for example) can be at |
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*/ |
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wp_embed_register_handler( 'facebook-alternate-photo', JETPACK_FACEBOOK_PHOTO_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); |
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|
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/* |
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* Videos |
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* |
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* Formats: |
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* https://www.facebook.com/video.php?v=2836814009877992 |
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* https://www.facebook.com/watch/?v=2836814009877992 |
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*/ |
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wp_embed_register_handler( 'facebook-video', JETPACK_FACEBOOK_VIDEO_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); |
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|
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/* |
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* Videos https://www.facebook.com/WhiteHouse/videos/10153398464269238/ |
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*/ |
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wp_embed_register_handler( 'facebook-alternate-video', JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); |
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|
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/** |
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* Callback to modify output of embedded Facebook posts. |
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* |
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* @param array $matches Regex partial matches against the URL passed. |
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* @param array $attr Attributes received in embed response. |
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* @param string $url Requested URL to be embedded. |
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* @return string Facebook embed markup. |
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*/ |
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function jetpack_facebook_embed_handler( $matches, $attr, $url ) { |
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if ( |
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false !== strpos( $url, 'video.php' ) |
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|| false !== strpos( $url, '/videos/' ) |
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|| false !== strpos( $url, '/watch' ) |
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) { |
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$embed = sprintf( '<div class="fb-video" data-allowfullscreen="true" data-href="%s"></div>', esc_url( $url ) ); |
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} else { |
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$width = 552; // As of 01/2017, the default width of Facebook embeds when no width attribute provided. |
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|
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global $content_width; |
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if ( isset( $content_width ) ) { |
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$width = min( $width, $content_width ); |
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} |
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|
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$embed = sprintf( '<div class="fb-post" data-href="%s" data-width="%s"></div>', esc_url( $url ), esc_attr( $width ) ); |
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} |
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|
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// Skip rendering scripts in an AMP context. |
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if ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) { |
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return $embed; |
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} |
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|
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// since Facebook is a faux embed, we need to load the JS SDK in the wpview embed iframe. |
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if ( |
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defined( 'DOING_AJAX' ) |
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&& DOING_AJAX |
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// No need to check for a nonce here, that's already handled by Core further up. |
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&& ! empty( $_POST['action'] ) // phpcs:ignore WordPress.Security.NonceVerification.Missing |
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&& 'parse-embed' === $_POST['action'] // phpcs:ignore WordPress.Security.NonceVerification.Missing |
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) { |
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ob_start(); |
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wp_scripts()->do_items( array( 'jetpack-facebook-embed' ) ); |
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$scripts = ob_get_clean(); |
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return $embed . $scripts; |
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} else { |
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wp_enqueue_script( 'jetpack-facebook-embed' ); |
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return $embed; |
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} |
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} |
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|
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/** |
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* Shortcode handler. |
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* |
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* @param array $atts Shortcode attributes. |
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*/ |
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function jetpack_facebook_shortcode_handler( $atts ) { |
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global $wp_embed; |
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|
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if ( empty( $atts['url'] ) ) { |
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return; |
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} |
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|
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if ( ! preg_match( JETPACK_FACEBOOK_EMBED_REGEX, $atts['url'] ) |
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&& ! preg_match( JETPACK_FACEBOOK_PHOTO_EMBED_REGEX, $atts['url'] ) |
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&& ! preg_match( JETPACK_FACEBOOK_VIDEO_EMBED_REGEX, $atts['url'] ) |
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&& ! preg_match( JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX, $atts['url'] ) ) { |
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return; |
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} |
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|
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return $wp_embed->shortcode( $atts, $atts['url'] ); |
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} |
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add_shortcode( 'facebook', 'jetpack_facebook_shortcode_handler' ); |
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|
