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Diffstat (limited to 'plugins/jetpack/modules/shortcodes/facebook.php')
| -rw-r--r-- | plugins/jetpack/modules/shortcodes/facebook.php | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/plugins/jetpack/modules/shortcodes/facebook.php b/plugins/jetpack/modules/shortcodes/facebook.php new file mode 100644 index 00000000..e2b11e3f --- /dev/null +++ b/plugins/jetpack/modules/shortcodes/facebook.php @@ -0,0 +1,106 @@ +<?php +/** + * Facebook embeds + * + * @package Jetpack + */ + +define( 'JETPACK_FACEBOOK_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/(posts|photos)/([^/]+)?#' ); +define( 'JETPACK_FACEBOOK_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/permalink.php\?([^\s]+)#' ); +define( 'JETPACK_FACEBOOK_PHOTO_EMBED_REGEX', '#^https?://(www.)?facebook\.com/photo.php\?([^\s]+)#' ); +define( 'JETPACK_FACEBOOK_PHOTO_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/photos/([^/]+)?#' ); +define( 'JETPACK_FACEBOOK_VIDEO_EMBED_REGEX', '#^https?://(www.)?facebook\.com/video.php\?([^\s]+)#' ); +define( 'JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/videos/([^/]+)?#' ); + + +/* + * Example URL: https://www.facebook.com/VenusWilliams/posts/10151647007373076 + */ +wp_embed_register_handler( 'facebook', JETPACK_FACEBOOK_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); + +/* + * Example URL: https://www.facebook.com/permalink.php?id=222622504529111&story_fbid=559431180743788 + */ +wp_embed_register_handler( 'facebook-alternate', JETPACK_FACEBOOK_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); + +/* + * Photos are handled on a different endpoint; e.g. https://www.facebook.com/photo.php?fbid=10151609960150073&set=a.398410140072.163165.106666030072&type=1 + */ +wp_embed_register_handler( 'facebook-photo', JETPACK_FACEBOOK_PHOTO_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); + +/* + * Photos (from pages for example) can be at + */ +wp_embed_register_handler( 'facebook-alternate-photo', JETPACK_FACEBOOK_PHOTO_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); + +/* + * Videos e.g. https://www.facebook.com/video.php?v=772471122790796 + */ +wp_embed_register_handler( 'facebook-video', JETPACK_FACEBOOK_VIDEO_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); + +/* + * Videos https://www.facebook.com/WhiteHouse/videos/10153398464269238/ + */ +wp_embed_register_handler( 'facebook-alternate-video', JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' ); + +/** + * Callback to modify output of embedded Facebook posts. + * + * @param array $matches Regex partial matches against the URL passed. + * @param array $attr Attributes received in embed response. + * @param array $url Requested URL to be embedded. + */ +function jetpack_facebook_embed_handler( $matches, $attr, $url ) { + if ( false !== strpos( $url, 'video.php' ) || false !== strpos( $url, '/videos/' ) ) { + $embed = sprintf( '<div class="fb-video" data-allowfullscreen="true" data-href="%s"></div>', esc_url( $url ) ); + } else { + $width = 552; // As of 01/2017, the default width of Facebook embeds when no width attribute provided. + + global $content_width; + if ( isset( $content_width ) ) { + $width = min( $width, $content_width ); + } + + $embed = sprintf( '<fb:post href="%s" data-width="%s"></fb:post>', esc_url( $url ), esc_attr( $width ) ); + } + + // since Facebook is a faux embed, we need to load the JS SDK in the wpview embed iframe. + if ( + defined( 'DOING_AJAX' ) + && DOING_AJAX + // No need to check for a nonce here, that's already handled by Core further up. + && ! empty( $_POST['action'] ) // phpcs:ignore WordPress.Security.NonceVerification.Missing + && 'parse-embed' === $_POST['action'] // phpcs:ignore WordPress.Security.NonceVerification.Missing + ) { + ob_start(); + wp_scripts()->do_items( array( 'jetpack-facebook-embed' ) ); + $scripts = ob_get_clean(); + return $embed . $scripts; + } else { + wp_enqueue_script( 'jetpack-facebook-embed' ); + return $embed; + } +} + +/** + * Shortcode handler. + * + * @param array $atts Shortcode attributes. + */ +function jetpack_facebook_shortcode_handler( $atts ) { + global $wp_embed; + + if ( empty( $atts['url'] ) ) { + return; + } + + if ( ! preg_match( JETPACK_FACEBOOK_EMBED_REGEX, $atts['url'] ) + && ! preg_match( JETPACK_FACEBOOK_PHOTO_EMBED_REGEX, $atts['url'] ) + && ! preg_match( JETPACK_FACEBOOK_VIDEO_EMBED_REGEX, $atts['url'] ) + && ! preg_match( JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX, $atts['url'] ) ) { + return; + } + + return $wp_embed->shortcode( $atts, $atts['url'] ); +} +add_shortcode( 'facebook', 'jetpack_facebook_shortcode_handler' ); |