← All changes | modules/shortcodes/facebook.php +87 -5 12.7.3 → 16.2 View file →

		@@ -4,8 +4,12 @@
4	4	*
5	5	* @package automattic/jetpack
6	6	*/
7	7
	8	+if ( ! defined( 'ABSPATH' ) ) {
	9	+ exit( 0 );
	10	+}
	11	+
8	12	define( 'JETPACK_FACEBOOK_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/(posts|photos)/([^/]+)?#' );
9	13	define( 'JETPACK_FACEBOOK_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/permalink.php\?([^\s]+)#' );
10	14	define( 'JETPACK_FACEBOOK_PHOTO_EMBED_REGEX', '#^https?://(www.)?facebook\.com/photo.php\?([^\s]+)#' );
11	15	define( 'JETPACK_FACEBOOK_PHOTO_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/photos/([^/]+)?#' );
		@@ -54,14 +58,22 @@
54	58	* @param string $url Requested URL to be embedded.
55	59	* @return string Facebook embed markup.
56	60	*/
57	61	function jetpack_facebook_embed_handler( $matches, $attr, $url ) {
	62	+ // This is a stop-gap solution until Facebook hopefully resolves this ticket
	63	+ // https://developers.facebook.com/community/threads/1675075423353415/?post_id=1675075426686748
	64	+ $extra_styles = 'style="background-color: #fff; display: inline-block;"';
	65	+
58	66	if (
59		- false !== strpos( $url, 'video.php' )
60		- || false !== strpos( $url, '/videos/' )
61		- || false !== strpos( $url, '/watch' )
	67	+ str_contains( $url, 'video.php' )
	68	+ || str_contains( $url, '/videos/' )
	69	+ || str_contains( $url, '/watch' )
62	70	) {
63		- $embed = sprintf( '<div class="fb-video" data-allowfullscreen="true" data-href="%s"></div>', esc_url( $url ) );
	71	+ $embed = sprintf(
	72	+ '<div class="fb-video" data-allowfullscreen="true" data-href="%1$s" %2$s></div>',
	73	+ esc_url( $url ),
	74	+ $extra_styles
	75	+ );
64	76	} else {
65	77	$width = 552; // As of 01/2017, the default width of Facebook embeds when no width attribute provided.
66	78
67	79	global $content_width;
		@@ -68,9 +80,14 @@
68	80	if ( is_numeric( $content_width ) && $content_width > 0 ) {
69	81	$width = min( $width, $content_width );
70	82	}
71	83
72		- $embed = sprintf( '<div class="fb-post" data-href="%s" data-width="%s"></div>', esc_url( $url ), esc_attr( $width ) );
	84	+ $embed = sprintf(
	85	+ '<div class="fb-post" data-href="%1$s" data-width="%2$s" %3$s></div>',
	86	+ esc_url( $url ),
	87	+ esc_attr( $width ),
	88	+ $extra_styles
	89	+ );
73	90	}
74	91
75	92	// Skip rendering scripts in an AMP context.
76	93	if ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) {
		@@ -116,4 +133,69 @@
116	133
117	134	return $wp_embed->shortcode( $atts, $atts['url'] );
118	135	}
119	136	add_shortcode( 'facebook', 'jetpack_facebook_shortcode_handler' );
	137	+
	138	+/**
	139	+ * Embed Reversal for Facebook
	140	+ *
	141	+ * Hooked to pre_kses, converts an embed code from www.facebook.com to an oEmbeddable URL.
	142	+ *
	143	+ * @param string $content Post content.
	144	+ *
	145	+ * @return string The filtered or the original content.
	146	+ **/
	147	+function jetpack_facebook_embed_reversal( $content ) {
	148	+ if ( ! is_string( $content ) || false === stripos( $content, 'https://www.facebook.com/plugins/post.php' ) ) {
	149	+ return $content;
	150	+ }
	151	+
	152	+ /*
	153	+ * Sample embed code:
	154	+ * <iframe src="https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2Ftechcrunch%2Fposts%2Fpfbid0997g1PXQKfyFNHNTiCgaCFevt3PRFMaUBBB9eEFPR5NsXCv8EXxBw3p9bBYezWkHl&show_text=true&width=500" width="500" height="504" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowfullscreen="true" allow="autoplay; clipboard-write; encrypted-media; picture-in-picture; web-share"></iframe>
	155	+ */
	156	+
	157	+ $regexes = array();
	158	+ $regexes[] = '#<iframe[^>]+?src="((?:https?:)?//(?:www\.)?facebook\.com/plugins/post\.php\?[^"]+)"[^>]*?>\s*?</iframe>#i';
	159	+ $regexes[] = '#&lt;iframe[^&]+?src="((?:https?:)?//(?:www\.)?facebook\.com/plugins/post\.php\?[^"]+)"[^&]*?&gt;\s*?&lt;/iframe&gt;#i';
	160	+
	161	+ foreach ( $regexes as $regex ) {
	162	+ if ( ! preg_match_all( $regex, $content, $matches, PREG_SET_ORDER ) ) {
	163	+ continue;
	164	+ }
	165	+
	166	+ foreach ( $matches as $match ) {
	167	+ if ( ! preg_match( '#(https?:)?//(?:www\.)?facebook\.com/plugins/post.php([^/]*)#i', $match[1], $url_matches ) ) {
	168	+ continue;
	169	+ }
	170	+
	171	+ $src_url = $url_matches[0];
	172	+ $parsed_url = wp_parse_url( $src_url );
	173	+ if ( empty( $parsed_url['query'] ) ) {
	174	+ continue;
	175	+ }
	176	+
	177	+ $query_args = array();
	178	+ wp_parse_str( $parsed_url['query'], $query_args );
	179	+ if ( empty( $query_args['href'] ) ) {
	180	+ continue;
	181	+ }
	182	+
	183	+ // Since we support Facebook via oEmbed, we simply leave a link on a line by itself.
	184	+ $replace_regex = sprintf( '#\s*%s\s*#', preg_quote( $match[0], '#' ) );
	185	+ $url = esc_url( $query_args['href'] );
	186	+
	187	+ $content = preg_replace( $replace_regex, sprintf( "\n\n%s\n\n", $url ), $content );
	188	+ /** This action is documented in modules/shortcodes/youtube.php */
	189	+ do_action( 'jetpack_embed_to_shortcode', 'facebook', $url );
	190	+ }
	191	+ }
	192	+
	193	+ return $content;
	194	+}
	195	+
	196	+/**
	197	+ * Embed reversal: Convert an embed code from Facebook.com to an oEmbeddable URL.
	198	+ */
	199	+if ( jetpack_shortcodes_should_hook_pre_kses() ) {
	200	+ add_filter( 'pre_kses', 'jetpack_facebook_embed_reversal' );
	201	+}