jetpack / modules / sharedaddy / sharing-sources.php

sharing-sources.php in Jetpack – WP Security, Backup, Speed, & Growth 11.2.2, at modules/sharedaddy/sharing-sources.php

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1	<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
2	/**
3	* Define all sharing sources.
4	*
5	* phpcs:disable Generic.Files.OneObjectStructurePerFile.MultipleFound
6	*/
7
8	use Automattic\Jetpack\Device_Detection\User_Agent_Info;
9
10	/**
11	* Base class for sharing sources.
12	* See individual sharing classes below for the implementation of this class.
13	*/
14	abstract class Sharing_Source {
15	/**
16	* Button style (icon, icon-text, text, or official).
17	*
18	* @var string
19	*/
20	public $button_style;
21
22	/**
23	* Does the service have an official version.
24	*
25	* @var bool
26	*/
27	public $smart;
28
29	/**
30	* Should the sharing link open in a new tab.
31	*
32	* @var bool
33	*/
34	protected $open_link_in_new;
35
36	/**
37	* Sharing unique ID.
38	*
39	* @var int
40	*/
41	protected $id;
42
43	/**
44	* Constructor.
45	*
46	* @param int $id Sharing source ID.
47	* @param array $settings Sharing settings.
48	*/
49	public function __construct( $id, array $settings ) {
50	$this->id = $id;
51	/**
52	* Filter the way sharing links open.
53	*
54	* By default, sharing links open in a new window.
55	*
56	* @module sharedaddy
57	*
58	* @since 3.4.0
59	*
60	* @param bool true Should Sharing links open in a new window. Default to true.
61	*/
62	$this->open_link_in_new = apply_filters( 'jetpack_open_sharing_in_new_window', true );
63
64	if ( isset( $settings['button_style'] ) ) {
65	$this->button_style = $settings['button_style'];
66	}
67
68	if ( isset( $settings['smart'] ) ) {
69	$this->smart = $settings['smart'];
70	}
71	}
72
73	/**
74	* Is a service deprecated.
75	*
76	* @return bool
77	*/
78	public function is_deprecated() {
79	return false;
80	}
81
82	/**
83	* Get the protocol to use for a sharing service, based on the site settings.
84	*
85	* @return string
86	*/
87	public function http() {
88	return is_ssl() ? 'https' : 'http';
89	}
90
91	/**
92	* Get unique sharing ID.
93	*
94	* @return int
95	*/
96	public function get_id() {
97	return $this->id;
98	}
99
100	/**
101	* Get unique sharing ID. Similar to get_id().
102	*
103	* @return int
104	*/
105	public function get_class() {
106	return $this->id;
107	}
108
109	/**
110	* Get a post's permalink to use for sharing.
111	*
112	* @param int $post_id Post ID.
113	*
114	* @return string
115	*/
116	public function get_share_url( $post_id ) {
117	/**
118	* Filter the sharing permalink.
119	*
120	* @module sharedaddy
121	*
122	* @since 1.2.0
123	*
124	* @param string get_permalink( $post_id ) Post Permalink.
125	* @param int $post_id Post ID.
126	* @param int $this->id Sharing ID.
127	*/
128	return apply_filters( 'sharing_permalink', get_permalink( $post_id ), $post_id, $this->id );
129	}
130
131	/**
132	* Get a post's title to use for sharing.
133	*
134	* @param int $post_id Post ID.
135	*
136	* @return string
137	*/
138	public function get_share_title( $post_id ) {
139	$post = get_post( $post_id );
140	/**
141	* Filter the sharing title.
142	*
143	* @module sharedaddy
144	*
145	* @since 2.8.0
146	*
147	* @param string $post->post_title Post Title.
148	* @param int $post_id Post ID.
149	* @param int $this->id Sharing ID.
150	*/
151	$title = apply_filters( 'sharing_title', $post->post_title, $post_id, $this->id );
152
153	return html_entity_decode( wp_kses( $title, null ) );
154	}
155
156	/**
157	* Does this sharing source have a custom style.
158	*
159	* @return bool
160	*/
161	public function has_custom_button_style() {
162	return false;
163	}
164
165	/**
166	* Get the HTML markup to display a sharing link.
167	*
168	* @param string $url Post URL to share.
169	* @param string $text Sharing display text.
170	* @param string $title The title for the link.
171	* @param string $query Additional query arguments to add to the link. They should be in 'foo=bar&baz=1' format.
172	* @param bool\|string $id Sharing ID to include in the data-shared attribute.
173	* @param array $data_attributes The keys are used as additional attribute names with 'data-' prefix.
174	* The values are used as the attribute values.
175	*
176	* @return string The HTML for the link.
177	*/
178	public function get_link( $url, $text, $title, $query = '', $id = false, $data_attributes = array() ) {
179	$args = func_get_args();
180	$klasses = array( 'share-' . $this->get_class(), 'sd-button' );
181
182	if ( 'icon' === $this->button_style \|\| 'icon-text' === $this->button_style ) {
183	$klasses[] = 'share-icon';
184	}
185
186	if ( 'icon' === $this->button_style ) {
187	$text = $title;
188	$klasses[] = 'no-text';
189
190	if ( true === $this->open_link_in_new ) {
191	$text .= __( ' (Opens in new window)', 'jetpack' );
192	}
193	}
194
195	/**
196	* Filter the sharing display ID.
197	*
198	* @module sharedaddy
199	*
200	* @since 3.4.0
201	*
202	* @param string\|false $id Sharing ID.
203	* @param object $this Sharing service properties.
204	* @param array $args Array of sharing service options.
205	*/
206	$id = apply_filters( 'jetpack_sharing_display_id', $id, $this, $args );
207	/**
208	* Filter the sharing display link.
209	*
210	* @module sharedaddy
211	*
212	* @since 2.8.0
213	*
214	* @param string $url Post URL.
215	* @param object $this Sharing service properties.
216	* @param string\|false $id Sharing ID.
217	* @param array $args Array of sharing service options.
218	*/
219	$url = apply_filters( 'sharing_display_link', $url, $this, $id, $args ); // backwards compatibility
220	/**
221	* Filter the sharing display link.
222	*
223	* @module sharedaddy
224	*
225	* @since 2.8.0
226	*
227	* @param string $url Post URL.
228	* @param object $this Sharing service properties.
229	* @param string\|false $id Sharing ID.
230	* @param array $args Array of sharing service options.
231	*/
232	$url = apply_filters( 'jetpack_sharing_display_link', $url, $this, $id, $args );
233	/**
234	* Filter the sharing display query.
235	*
236	* @module sharedaddy
237	*
238	* @since 2.8.0
239	*
240	* @param string $query Sharing service URL parameter.
241	* @param object $this Sharing service properties.
242	* @param string\|false $id Sharing ID.
243	* @param array $args Array of sharing service options.
244	*/
245	$query = apply_filters( 'jetpack_sharing_display_query', $query, $this, $id, $args );
246
247	if ( ! empty( $query ) ) {
248	if ( false === stripos( $url, '?' ) ) {
249	$url .= '?' . $query;
250	} else {
251	$url .= '&' . $query;
252	}
253	}
254
255	if ( 'text' === $this->button_style ) {
256	$klasses[] = 'no-icon';
257	}
258
259	/**
260	* Filter the sharing display classes.
261	*
262	* @module sharedaddy
263	*
264	* @since 3.4.0
265	*
266	* @param array $klasses Sharing service classes.
267	* @param object $this Sharing service properties.
268	* @param string\|false $id Sharing ID.
269	* @param array $args Array of sharing service options.
270	*/
271	$klasses = apply_filters( 'jetpack_sharing_display_classes', $klasses, $this, $id, $args );
272	/**
273	* Filter the sharing display title.
274	*
275	* @module sharedaddy
276	*
277	* @since 3.4.0
278	*
279	* @param string $title Sharing service title.
280	* @param object $this Sharing service properties.
281	* @param string\|false $id Sharing ID.
282	* @param array $args Array of sharing service options.
283	*/
284	$title = apply_filters( 'jetpack_sharing_display_title', $title, $this, $id, $args );
285	/**
286	* Filter the sharing display text.
287	*
288	* @module sharedaddy
289	*
290	* @since 3.4.0
291	*
292	* @param string $text Sharing service text.
293	* @param object $this Sharing service properties.
294	* @param string\|false $id Sharing ID.
295	* @param array $args Array of sharing service options.
296	*/
297	$text = apply_filters( 'jetpack_sharing_display_text', $text, $this, $id, $args );
298
299	/**
300	* Filter the sharing data attributes.
301	*
302	* @module sharedaddy
303	*
304	* @since 11.0
305	*
306	* @param array $data_attributes Attributes supplied from the sharing source.
307	* Note that 'data-' will be prepended to all keys.
308	* @param Sharing_Source $this Sharing source instance.
309	* @param string\|false $id Sharing ID.
310	* @param array $args Array of sharing service options.
311	*/
312	$data_attributes = apply_filters( 'jetpack_sharing_data_attributes', (array) $data_attributes, $this, $id, $args );
313
314	$encoded_data_attributes = '';
315	if ( ! empty( $data_attributes ) ) {
316	$encoded_data_attributes = implode(
317	' ',
318	array_map(
319	function ( $data_key, $data_value ) {
320	return sprintf(
321	'data-%s="%s"',
322	esc_attr( str_replace( array( ' ', '"' ), '', $data_key ) ),
323	esc_attr( $data_value )
324	);
325	},
326	array_keys( $data_attributes ),
327	array_values( $data_attributes )
328	)
329	);
330	}
331
332	return sprintf(
333	'<a rel="nofollow%s" data-shared="%s" class="%s" href="%s"%s title="%s" %s><span%s>%s</span></a>',
334	( true === $this->open_link_in_new ) ? ' noopener noreferrer' : '',
335	( $id ? esc_attr( $id ) : '' ),
336	implode( ' ', $klasses ),
337	$url,
338	( true === $this->open_link_in_new ) ? ' target="_blank"' : '',
339	$title,
340	$encoded_data_attributes,
341	( 'icon' === $this->button_style ) ? '></span><span class="sharing-screen-reader-text"' : '',
342	$text
343	);
344	}
345
346	/**
347	* Get an unfiltered post permalink to use when generating a sharing URL with get_link.
348	* Use instead of get_share_url for non-official styles as get_permalink ensures that process_request
349	* will be executed more reliably, in the case that the filtered URL uses a service that strips query parameters.
350	*
351	* @since 3.7.0
352	* @param int $post_id Post ID.
353	*
354	* @uses get_permalink
355	*
356	* @return string get_permalink( $post_id ) Post permalink.
357	*/
358	public function get_process_request_url( $post_id ) {
359	return get_permalink( $post_id );
360	}
361
362	/**
363	* Get sharing name.
364	*/
365	abstract public function get_name();
366
367	/**
368	* Get the markup of the sharing button.
369	*
370	* @param WP_Post $post Post object.
371	*/
372	abstract public function get_display( $post );
373
374	/**
375	* Add content specific to a service in the head.
376	*/
377	public function display_header() {
378	}
379
380	/**
381	* Add content specific to a service in the footer.
382	*/
383	public function display_footer() {
384	}
385
386	/**
387	* Does the service have advanced options.
388	*
389	* @return bool
390	*/
391	public function has_advanced_options() {
392	return false;
393	}
394
395	/**
396	* Get the AMP specific markup for a sharing button.
397	*
398	* @param \WP_Post $post The current post being viewed.
399	*
400	* @return bool\|string
401	*/
402	public function get_amp_display( $post ) {
403	// Only display markup if we're on a post.
404	if ( empty( $post ) ) {
405	return false;
406	}
407
408	return $this->build_amp_markup();
409	}
410
411	/**
412	* Generates and returns the markup for an AMP sharing button.
413	*
414	* @param array $attrs Custom attributes for rendering the social icon.
415	*
416	* @return string
417	*/
418	protected function build_amp_markup( $attrs = array() ) {
419
420	$title = sprintf(
421	/* translators: placeholder is a service name, such as "Twitter" or "Facebook". */
422	__( 'Click to share on %s', 'jetpack' ),
423	$this->get_name()
424	);
425
426	$attrs = array_merge(
427	array(
428	'type' => $this->get_id(),
429	'height' => '32px',
430	'width' => '32px',
431	'aria-label' => $title,
432	'title' => $title,
433	),
434	$attrs
435	);
436	$sharing_link = '<amp-social-share';
437	foreach ( $attrs as $key => $value ) {
438	$sharing_link .= sprintf( ' %s="%s"', sanitize_key( $key ), esc_attr( $value ) );
439	}
440	$sharing_link .= '></amp-social-share>';
441	return $sharing_link;
442	}
443
444	/**
445	* Display a preview of the sharing button.
446	*
447	* @param bool $echo Whether to echo the output or return it.
448	* @param bool $force_smart Whether to force the smart (official) services to be shown.
449	* @param null\|string $button_style Button style.
450	*
451	* @return string\|void
452	*/
453	public function display_preview( $echo = true, $force_smart = false, $button_style = null ) {
454	$text = ' ';
455	$button_style = ( ! empty( $button_style ) ) ? $button_style : $this->button_style;
456	if ( ! $this->smart && ! $force_smart ) {
457	if ( $button_style !== 'icon' ) {
458	$text = $this->get_name();
459	}
460	}
461
462	$klasses = array( 'share-' . $this->get_class(), 'sd-button' );
463
464	if ( $button_style === 'icon' \|\| $button_style === 'icon-text' ) {
465	$klasses[] = 'share-icon';
466	}
467
468	if ( $button_style === 'icon' ) {
469	$klasses[] = 'no-text';
470	}
471
472	if ( $button_style === 'text' ) {
473	$klasses[] = 'no-icon';
474	}
475
476	$is_deprecated = $this->is_deprecated();
477
478	$link = sprintf(
479	'<a rel="nofollow" class="%s" href="javascript:void(0)" title="%s"><span>%s</span></a>',
480	implode( ' ', $klasses ),
481	esc_attr(
482	$is_deprecated
483	/* translators: %1$s is the name of a deprecated Sharing Service like "Google+" */
484	? sprintf( __( 'The %1$s service has shut down. This sharing button is not displayed to your visitors and should be removed.', 'jetpack' ), $this->get_name() )
485	: $this->get_name()
486	),
487	esc_html(
488	$is_deprecated
489	/* translators: %1$s is the name of a deprecated Sharing Service like "Google+" */
490	? sprintf( __( '%1$s has shut down', 'jetpack' ), $this->get_name() )
491	: $text
492	)
493	);
494
495	$smart = ( $this->smart \|\| $force_smart ) ? 'on' : 'off';
496	$return = "<div class='option option-smart-$smart'>$link</div>";
497	if ( $echo ) {
498	echo $return; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- we escape things above.
499	}
500
501	return $return;
502	}
503
504	/**
505	* Get sharing stats for a specific post or sharing service.
506	*
507	* @param bool\|WP_Post $post Post object.
508	*
509	* @return int
510	*/
511	public function get_total( $post = false ) {
512	global $wpdb, $blog_id;
513
514	$name = strtolower( $this->get_id() );
515
516	if ( $post === false ) {
517	// get total number of shares for service
518	return (int) $wpdb->get_var( $wpdb->prepare( 'SELECT SUM( count ) FROM sharing_stats WHERE blog_id = %d AND share_service = %s', $blog_id, $name ) );
519	}
520
521	// get total shares for a post
522	return (int) $wpdb->get_var( $wpdb->prepare( 'SELECT count FROM sharing_stats WHERE blog_id = %d AND post_id = %d AND share_service = %s', $blog_id, $post->ID, $name ) );
523	}
524
525	/**
526	* Get sharing stats for all posts on the site.
527	*
528	* @return array
529	*/
530	public function get_posts_total() {
531	global $wpdb, $blog_id;
532
533	$totals = array();
534	$name = strtolower( $this->get_id() );
535
536	$my_data = $wpdb->get_results( $wpdb->prepare( 'SELECT post_id as id, SUM( count ) as total FROM sharing_stats WHERE blog_id = %d AND share_service = %s GROUP BY post_id ORDER BY count DESC ', $blog_id, $name ) );
537
538	if ( ! empty( $my_data ) ) {
539	foreach ( $my_data as $row ) {
540	$totals[] = new Sharing_Post_Total( $row->id, $row->total );
541	}
542	}
543
544	usort( $totals, array( 'Sharing_Post_Total', 'cmp' ) );
545
546	return $totals;
547	}
548
549	/**
550	* Process sharing request. Add actions that need to happen when sharing here.
551	*
552	* @param WP_Post $post Post object.
553	* @param array $post_data Array of information about the post we're sharing.
554	*
555	* @return void
556	*/
557	public function process_request( $post, array $post_data ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
558	/**
559	* Fires when a post is shared via one of the sharing buttons.
560	*
561	* @module sharedaddy
562	*
563	* @since 1.1.0
564	*
565	* @param array $args Aray of information about the sharing service.
566	*/
567	do_action(
568	'sharing_bump_stats',
569	array(
570	'service' => $this,
571	'post' => $post,
572	)
573	);
574	}
575
576	/**
577	* Redirect to an external social network site to finish sharing.
578	*
579	* @param string $url Sharing URL for a given service.
580	*/
581	public function redirect_request( $url ) {
582	wp_redirect( $url ); // phpcs:ignore WordPress.Security.SafeRedirect.wp_redirect_wp_redirect -- We allow external redirects here; we define them ourselves.
583
584	// We set up this custom header to indicate to search engines not to index this page.
585	header( 'X-Robots-Tag: noindex, nofollow' );
586	die();
587	}
588
589	/**
590	* Add extra JavaScript to a sharing service.
591	*
592	* @param string $name Sharing service name.
593	* @param array $params Array of sharing options.
594	*
595	* @return void
596	*/
597	public function js_dialog( $name, $params = array() ) {
598	if ( true !== $this->open_link_in_new ) {
599	return;
600	}
601
602	$defaults = array(
603	'menubar' => 1,
604	'resizable' => 1,
605	'width' => 600,
606	'height' => 400,
607	);
608	$params = array_merge( $defaults, $params );
609	$opts = array();
610	foreach ( $params as $key => $val ) {
611	$opts[] = "$key=$val";
612	}
613	$opts = implode( ',', $opts );
614
615	// Add JS after sharing-js has been enqueued.
616	wp_add_inline_script(
617	'sharing-js',
618	"var windowOpen;
619	( function () {
620	function matches( el, sel ) {
621	return !! (
622	el.matches && el.matches( sel ) \|\|
623	el.msMatchesSelector && el.msMatchesSelector( sel )
624	);
625	}
626
627	document.body.addEventListener( 'click', function ( event ) {
628	if ( ! event.target ) {
629	return;
630	}
631
632	var el;
633	if ( matches( event.target, 'a.share-$name' ) ) {
634	el = event.target;
635	} else if ( event.target.parentNode && matches( event.target.parentNode, 'a.share-$name' ) ) {
636	el = event.target.parentNode;
637	}
638
639	if ( el ) {
640	event.preventDefault();
641
642	// If there's another sharing window open, close it.
643	if ( typeof windowOpen !== 'undefined' ) {
644	windowOpen.close();
645	}
646	windowOpen = window.open( el.getAttribute( 'href' ), 'wpcom$name', '$opts' );
647	return false;
648	}
649	} );
650	} )();"
651	);
652	}
653	}
654
655	/**
656	* Handle the display of deprecated sharing services.
657	*/
658	abstract class Deprecated_Sharing_Source extends Sharing_Source {
659	/**
660	* Button style (icon-text, icon, or text)
661	*
662	* @var string
663	*/
664	public $button_style = 'text';
665
666	/**
667	* Does the service have an official version.
668	*
669	* @var bool
670	*/
671	public $smart = false;
672
673	/**
674	* Should the sharing link open in a new tab.
675	*
676	* @var bool
677	*/
678	protected $open_link_in_new = false;
679
680	/**
681	* Sharing unique ID.
682	*
683	* @var int
684	*/
685	protected $id;
686
687	/**
688	* Is the service deprecated.
689	*
690	* @var bool
691	*/
692	protected $deprecated = true;
693
694	/**
695	* Constructor.
696	*
697	* @param int $id Sharing source ID.
698	* @param array $settings Sharing settings.
699	*/
700	final public function __construct( $id, array $settings ) {
701	$this->id = $id;
702
703	if ( isset( $settings['button_style'] ) ) {
704	$this->button_style = $settings['button_style'];
705	}
706	}
707
708	/**
709	* Is the service deprecated.
710	*
711	* @return bool
712	*/
713	final public function is_deprecated() {
714	return true;
715	}
716
717	/**
718	* Get a post's permalink to use for sharing.
719	*
720	* @param int $post_id Post ID.
721	*
722	* @return string
723	*/
724	final public function get_share_url( $post_id ) {
725	return get_permalink( $post_id );
726	}
727
728	/**
729	* No AMP display for deprecated sources.
730	*
731	* @param \WP_Post $post The current post being viewed.
732	*/
733	final public function get_amp_display( $post ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
734	return false;
735	}
736
737	/**
738	* Display a preview of the sharing button.
739	*
740	* @param bool $echo Whether to echo the output or return it.
741	* @param bool $force_smart Whether to force the smart (official) services to be shown.
742	* @param null\|string $button_style Button style.
743	*
744	* @return string\|void
745	*/
746	final public function display_preview( $echo = true, $force_smart = false, $button_style = null ) {
747	return parent::display_preview( $echo, false, $button_style );
748	}
749
750	/**
751	* Get sharing stats for a specific post or sharing service.
752	*
753	* @param bool\|WP_Post $post Post object.
754	*
755	* @return int
756	*/
757	final public function get_total( $post = false ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
758	return 0;
759	}
760
761	/**
762	* Get sharing stats for all posts on the site.
763	*
764	* @return int\|array
765	*/
766	final public function get_posts_total() {
767	return 0;
768	}
769
770	/**
771	* Process sharing request. Add actions that need to happen when sharing here.
772	*
773	* @param WP_Post $post Post object.
774	* @param array $post_data Array of information about the post we're sharing.
775	*
776	* @return void
777	*/
778	final public function process_request( $post, array $post_data ) { // phpcs:ignore Generic.CodeAnalysis.UselessOverridingMethod.Found
779	parent::process_request( $post, $post_data );
780	}
781
782	/**
783	* Get the markup of the sharing button.
784	*
785	* @param WP_Post $post Post object.
786	*
787	* @return string
788	*/
789	final public function get_display( $post ) {
790	if ( current_user_can( 'manage_options' ) ) {
791	return $this->display_deprecated( $post );
792	}
793
794	return '';
795	}
796
797	/**
798	* Display a custom message for deprecated services.
799	*
800	* @param WP_Post $post Post object.
801	*
802	* @return string
803	*/
804	public function display_deprecated( $post ) {
805	return $this->get_link(
806	$this->get_share_url( $post->ID ),
807	/* translators: %1$s is the name of a deprecated Sharing Service like "Google+" */
808	sprintf( __( '%1$s has shut down', 'jetpack' ), $this->get_name() ),
809	/* translators: %1$s is the name of a deprecated Sharing Service like "Google+" */
810	sprintf( __( 'The %1$s service has shut down. This sharing button is not displayed to your visitors and should be removed.', 'jetpack' ), $this->get_name() )
811	);
812	}
813	}
814
815	/**
816	* Handle the display of advanced sharing services.
817	* Custom sharing buttons we create ourselves will be such services.
818	*/
819	abstract class Sharing_Advanced_Source extends Sharing_Source {
820	/**
821	* Does the service have advanced options.
822	*
823	* @return bool
824	*/
825	public function has_advanced_options() {
826	return true;
827	}
828
829	/**
830	* Display options for our sharing buttons.
831	*/
832	abstract public function display_options();
833
834	/**
835	* Sanitize and save options for our sharing buttons.
836	*
837	* @param array $data Data to be saved.
838	*
839	* @return void
840	*/
841	abstract public function update_options( array $data );
842
843	/**
844	* Get array of information about the service.
845	*
846	* @return array
847	*/
848	abstract public function get_options();
849	}
850
851	/**
852	* Handle the display of the email sharing button.
853	*/
854	class Share_Email extends Sharing_Source {
855	/**
856	* Service short name.
857	*
858	* @var string
859	*/
860	public $shortname = 'email';
861
862	/**
863	* Service icon font code.
864	*
865	* @var string
866	*/
867	public $icon = '\f410';
868
869	/**
870	* Constructor.
871	*
872	* @param int $id Sharing source ID.
873	* @param array $settings Sharing settings.
874	*/
875	public function __construct( $id, array $settings ) {
876	parent::__construct( $id, $settings );
877
878	if ( 'official' === $this->button_style ) {
879	$this->smart = true;
880	} else {
881	$this->smart = false;
882	}
883	}
884
885	/**
886	* Service name.
887	*
888	* @return string
889	*/
890	public function get_name() {
891	return _x( 'Email', 'as sharing source', 'jetpack' );
892	}
893
894	/**
895	* Helper function to return a nonce action based on the current post.
896	*
897	* @param WP_Post\|null $post The current post if it is defined.
898	* @return string The nonce action name.
899	*/
900	protected function get_email_share_nonce_action( $post ) {
901	if ( ! empty( $post ) && $post instanceof WP_Post ) {
902	return 'jetpack-email-share-' . $post->ID;
903	}
904
905	return 'jetpack-email-share';
906	}
907
908	/**
909	* Process sharing request. Add actions that need to happen when sharing here.
910	*
911	* @param WP_Post $post Post object.
912	* @param array $post_data Array of information about the post we're sharing.
913	*
914	* @return void
915	*/
916	public function process_request( $post, array $post_data ) {
917	$is_ajax = false;
918	if (
919	isset( $_SERVER['HTTP_X_REQUESTED_WITH'] )
920	&& strtolower( sanitize_text_field( wp_unslash( $_SERVER['HTTP_X_REQUESTED_WITH'] ) ) ) === 'xmlhttprequest'
921	) {
922	$is_ajax = true;
923	}
924
925	// Require an AJAX-driven submit and a valid nonce to process the request
926	if (
927	$is_ajax
928	&& isset( $post_data['email-share-nonce'] )
929	&& wp_verify_nonce( $post_data['email-share-nonce'], $this->get_email_share_nonce_action( $post ) )
930	) {
931	// Ensure that we bump stats
932	parent::process_request( $post, $post_data );
933	}
934
935	if ( $is_ajax ) {
936	wp_send_json_success();
937	} else {
938	wp_safe_redirect( get_permalink( $post->ID ) . '?shared=email&msg=fail' );
939	exit;
940	}
941
942	wp_die();
943	}
944
945	/**
946	* Get the markup of the sharing button.
947	*
948	* @param WP_Post $post Post object.
949	*
950	* @return string The HTML for the button.
951	*/
952	public function get_display( $post ) {
953	$tracking_url = $this->get_process_request_url( $post->ID );
954	if ( false === stripos( $tracking_url, '?' ) ) {
955	$tracking_url .= '?';
956	} else {
957	$tracking_url .= '&';
958	}
959	$tracking_url .= 'share=email';
960
961	$data_attributes = array(
962	'email-share-error-title' => __( 'Do you have email set up?', 'jetpack' ),
963	'email-share-error-text' => __(
964	"If you're having problems sharing via email, you might not have email set up for your browser. You may need to create a new email yourself.",
965	'jetpack'
966	),
967	'email-share-nonce' => wp_create_nonce( $this->get_email_share_nonce_action( $post ) ),
968	'email-share-track-url' => $tracking_url,
969	);
970
971	$post_title = $this->get_share_title( $post->ID );
972	$post_url = $this->get_share_url( $post->ID );
973
974	/** This filter is documented in plugins/jetpack/modules/sharedaddy/sharedaddy.php */
975	$email_subject = apply_filters(
976	'wp_sharing_email_send_post_subject',
977	sprintf( '[%s] %s', __( 'Shared Post', 'jetpack' ), $post_title )
978	);
979
980	$mailto_query = sprintf(
981	'subject=%s&body=%s&share=email',
982	rawurlencode( $email_subject ),
983	rawurlencode( $post_url )
984	);
985
986	return $this->get_link(
987	'mailto:',
988	_x( 'Email', 'share to', 'jetpack' ),
989	__( 'Click to email a link to a friend', 'jetpack' ),
990	$mailto_query,
991	false,
992	$data_attributes
993	);
994	}
995
996	/**
997	* AMP display for email.
998	*
999	* @param \WP_Post $post The current post being viewed.
1000	*/
1001	public function get_amp_display( $post ) { // phpcs:ignore
1002	$attrs = array(
1003	// Prevents an empty window from opening on desktop: https://github.com/ampproject/amphtml/issues/9157.
1004	'data-target' => '_self',
1005	);
1006
1007	return $this->build_amp_markup( $attrs );
1008	}
1009	}
1010
1011	/**
1012	* Twitter sharing button.
1013	*/
1014	class Share_Twitter extends Sharing_Source {
1015	/**
1016	* Service short name.
1017	*
1018	* @var string
1019	*/
1020	public $shortname = 'twitter';
1021
1022	/**
1023	* Service icon font code.
1024	*
1025	* @var string
1026	*/
1027	public $icon = '\f202';
1028
1029	/**
1030	* Length of a URL on Twitter.
1031	* 'https://dev.twitter.com/rest/reference/get/help/configuration'
1032	* ( 2015/02/06 ) short_url_length is 22, short_url_length_https is 23
1033	*
1034	* @var int
1035	*/
1036	public $short_url_length = 24;
1037
1038	/**
1039	* Constructor.
1040	*
1041	* @param int $id Sharing source ID.
1042	* @param array $settings Sharing settings.
1043	*/
1044	public function __construct( $id, array $settings ) {
1045	parent::__construct( $id, $settings );
1046
1047	if ( 'official' === $this->button_style ) {
1048	$this->smart = true;
1049	} else {
1050	$this->smart = false;
1051	}
1052	}
1053
1054	/**
1055	* Service name.
1056	*
1057	* @return string
1058	*/
1059	public function get_name() {
1060	return __( 'Twitter', 'jetpack' );
1061	}
1062
1063	/**
1064	* Determine the Twitter 'via' value for a post.
1065	*
1066	* @param WP_Post\|int $post Post object or post ID.
1067	* @return string Twitter handle without the preceding @.
1068	**/
1069	public static function sharing_twitter_via( $post ) {
1070	$post = get_post( $post );
1071	/**
1072	* Allow third-party plugins to customize the Twitter username used as "twitter:site" Twitter Card Meta Tag.
1073	*
1074	* @module sharedaddy
1075	*
1076	* @since 3.0.0
1077	*
1078	* @param string $string Twitter Username.
1079	* @param array $args Array of Open Graph Meta Tags and Twitter Cards tags.
1080	*/
1081	$twitter_site_tag_value = apply_filters(
1082	'jetpack_twitter_cards_site_tag',
1083	'',
1084	/** This action is documented in modules/sharedaddy/sharing-sources.php */
1085	array( 'twitter:creator' => apply_filters( 'jetpack_sharing_twitter_via', '', $post->ID ) )
1086	);
1087
1088	/*
1089	* Hack to remove the unwanted behavior of adding 'via @jetpack' which
1090	* was introduced with the adding of the Twitter cards.
1091	* This should be a temporary solution until a better method is setup.
1092	*/
1093	if ( 'jetpack' === $twitter_site_tag_value ) {
1094	$twitter_site_tag_value = '';
1095	}
1096
1097	/**
1098	* Filters the Twitter username used as "via" in the Twitter sharing button.
1099	*
1100	* @module sharedaddy
1101	*
1102	* @since 1.7.0
1103	*
1104	* @param string $twitter_site_tag_value Twitter Username.
1105	* @param int $post->ID Post ID.
1106	*/
1107	$twitter_site_tag_value = apply_filters( 'jetpack_sharing_twitter_via', $twitter_site_tag_value, $post->ID );
1108
1109	// Strip out anything other than a letter, number, or underscore.
1110	// This will prevent the inadvertent inclusion of an extra @, as well as normalizing the handle.
1111	return preg_replace( '/[^\da-z_]+/i', '', $twitter_site_tag_value );
1112	}
1113
1114	/**
1115	* Determine the 'related' Twitter accounts for a post.
1116	*
1117	* @param WP_Post\|int $post Post object or post ID.
1118	* @return string Comma-separated list of Twitter handles.
1119	**/
1120	public static function get_related_accounts( $post ) {
1121	$post = get_post( $post );
1122	/**
1123	* Filter the list of related Twitter accounts added to the Twitter sharing button.
1124	*
1125	* @module sharedaddy
1126	*
1127	* @since 1.7.0
1128	*
1129	* @param array $args Array of Twitter usernames. Format is 'username' => 'Optional description'
1130	* @param int $post->ID Post ID.
1131	*/
1132	$related_accounts = apply_filters( 'jetpack_sharing_twitter_related', array(), $post->ID );
1133
1134	// Example related string: account1,account2:Account 2 description,account3
1135	$related = array();
1136
1137	foreach ( $related_accounts as $related_account_username => $related_account_description ) {
1138	// Join the description onto the end of the username
1139	if ( $related_account_description ) {
1140	$related_account_username .= ':' . $related_account_description;
1141	}
1142
1143	$related[] = $related_account_username;
1144	}
1145
1146	return implode( ',', $related );
1147	}
1148
1149	/**
1150	* Get the markup of the sharing button.
1151	*
1152	* @param WP_Post $post Post object.
1153	*
1154	* @return string
1155	*/
1156	public function get_display( $post ) {
1157	$via = $this->sharing_twitter_via( $post );
1158
1159	if ( $via ) {
1160	$via = 'data-via="' . esc_attr( $via ) . '"';
1161	} else {
1162	$via = '';
1163	}
1164
1165	$related = $this->get_related_accounts( $post );
1166	if ( ! empty( $related ) && $related !== $via ) {
1167	$related = 'data-related="' . esc_attr( $related ) . '"';
1168	} else {
1169	$related = '';
1170	}
1171
1172	if ( $this->smart ) {
1173	$share_url = $this->get_share_url( $post->ID );
1174	$post_title = $this->get_share_title( $post->ID );
1175	return sprintf(
1176	'<a href="https://twitter.com/share" class="twitter-share-button" data-url="%1$s" data-text="%2$s" %3$s %4$s>Tweet</a>',
1177	esc_url( $share_url ),
1178	esc_attr( $post_title ),
1179	$via,
1180	$related
1181	);
1182	} else {
1183	if (
1184	/**
1185	* Allow plugins to disable sharing counts for specific sharing services.
1186	*
1187	* @module sharedaddy
1188	*
1189	* @since 3.0.0
1190	*
1191	* @param bool true Should sharing counts be enabled for this specific service. Default to true.
1192	* @param int $post->ID Post ID.
1193	* @param string $str Sharing service name.
1194	*/
1195	apply_filters( 'jetpack_register_post_for_share_counts', true, $post->ID, 'twitter' )
1196	) {
1197	sharing_register_post_for_share_counts( $post->ID );
1198	}
1199	return $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'Twitter', 'share to', 'jetpack' ), __( 'Click to share on Twitter', 'jetpack' ), 'share=twitter', 'sharing-twitter-' . $post->ID );
1200	}
1201	}
1202
1203	/**
1204	* Process sharing request. Add actions that need to happen when sharing here.
1205	*
1206	* @param WP_Post $post Post object.
1207	* @param array $post_data Array of information about the post we're sharing.
1208	*
1209	* @return void
1210	*/
1211	public function process_request( $post, array $post_data ) {
1212	$post_title = $this->get_share_title( $post->ID );
1213	$post_link = $this->get_share_url( $post->ID );
1214
1215	if ( function_exists( 'mb_stripos' ) ) {
1216	$strlen = 'mb_strlen';
1217	$substr = 'mb_substr';
1218	} else {
1219	$strlen = 'strlen';
1220	$substr = 'substr';
1221	}
1222
1223	$via = $this->sharing_twitter_via( $post );
1224	$related = $this->get_related_accounts( $post );
1225	if ( $via ) {
1226	$sig = " via @$via";
1227	if ( $related === $via ) {
1228	$related = false;
1229	}
1230	} else {
1231	$via = false;
1232	$sig = '';
1233	}
1234
1235	$suffix_length = $this->short_url_length + $strlen( $sig );
1236	// $sig is handled by twitter in their 'via' argument.
1237	// $post_link is handled by twitter in their 'url' argument.
1238	if ( 280 < $strlen( $post_title ) + $suffix_length ) {
1239	// The -1 is for "\xE2\x80\xA6", a UTF-8 ellipsis.
1240	$text = $substr( $post_title, 0, 280 - $suffix_length - 1 ) . "\xE2\x80\xA6";
1241	} else {
1242	$text = $post_title;
1243	}
1244
1245	// Record stats
1246	parent::process_request( $post, $post_data );
1247
1248	$url = $post_link;
1249	$twitter_url = add_query_arg(
1250	rawurlencode_deep( array_filter( compact( 'via', 'related', 'text', 'url' ) ) ),
1251	'https://twitter.com/intent/tweet'
1252	);
1253
1254	parent::redirect_request( $twitter_url );
1255	}
1256
1257	/**
1258	* Does this sharing source have a custom style.
1259	*
1260	* @return bool
1261	*/
1262	public function has_custom_button_style() {
1263	return $this->smart;
1264	}
1265
1266	/**
1267	* Add content specific to a service in the footer.
1268	*/
1269	public function display_footer() {
1270	if ( $this->smart ) {
1271	?>
1272	<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script>
1273	<?php
1274	} else {
1275	$this->js_dialog( $this->shortname, array( 'height' => 350 ) );
1276	}
1277	}
1278	}
1279
1280	/**
1281	* Reddit sharing button.
1282	*/
1283	class Share_Reddit extends Sharing_Source {
1284	/**
1285	* Service short name.
1286	*
1287	* @var string
1288	*/
1289	public $shortname = 'reddit';
1290
1291	/**
1292	* Service icon font code.
1293	*
1294	* @var string
1295	*/
1296	public $icon = '\f222';
1297
1298	/**
1299	* Constructor.
1300	*
1301	* @param int $id Sharing source ID.
1302	* @param array $settings Sharing settings.
1303	*/
1304	public function __construct( $id, array $settings ) {
1305	parent::__construct( $id, $settings );
1306
1307	if ( 'official' === $this->button_style ) {
1308	$this->smart = true;
1309	} else {
1310	$this->smart = false;
1311	}
1312	}
1313
1314	/**
1315	* Service name.
1316	*
1317	* @return string
1318	*/
1319	public function get_name() {
1320	return __( 'Reddit', 'jetpack' );
1321	}
1322
1323	/**
1324	* Get the markup of the sharing button.
1325	*
1326	* @param WP_Post $post Post object.
1327	*
1328	* @return string
1329	*/
1330	public function get_display( $post ) {
1331	if ( $this->smart ) {
1332	return '<div class="reddit_button"><iframe src="' . $this->http() . '://www.reddit.com/static/button/button1.html?newwindow=true&width=120&url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&title=' . rawurlencode( $this->get_share_title( $post->ID ) ) . '" height="22" width="120" scrolling="no" frameborder="0"></iframe></div>';
1333	} else {
1334	return $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'Reddit', 'share to', 'jetpack' ), __( 'Click to share on Reddit', 'jetpack' ), 'share=reddit' );
1335	}
1336	}
1337
1338	/**
1339	* AMP display for Reddit.
1340	*
1341	* @param \WP_Post $post The current post being viewed.
1342	*/
1343	public function get_amp_display( $post ) {
1344	$attrs = array(
1345	'data-share-endpoint' => esc_url_raw( 'https://reddit.com/submit?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&title=' . rawurlencode( $this->get_share_title( $post->ID ) ) ),
1346	);
1347
1348	return $this->build_amp_markup( $attrs );
1349	}
1350
1351	/**
1352	* Process sharing request. Add actions that need to happen when sharing here.
1353	*
1354	* @param WP_Post $post Post object.
1355	* @param array $post_data Array of information about the post we're sharing.
1356	*
1357	* @return void
1358	*/
1359	public function process_request( $post, array $post_data ) {
1360	$reddit_url = $this->http() . '://reddit.com/submit?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&title=' . rawurlencode( $this->get_share_title( $post->ID ) );
1361
1362	// Record stats
1363	parent::process_request( $post, $post_data );
1364
1365	parent::redirect_request( $reddit_url );
1366	}
1367	}
1368
1369	/**
1370	* LinkedIn sharing button.
1371	*/
1372	class Share_LinkedIn extends Sharing_Source {
1373	/**
1374	* Service short name.
1375	*
1376	* @var string
1377	*/
1378	public $shortname = 'linkedin';
1379
1380	/**
1381	* Service icon font code.
1382	*
1383	* @var string
1384	*/
1385	public $icon = '\f207';
1386
1387	/**
1388	* Constructor.
1389	*
1390	* @param int $id Sharing source ID.
1391	* @param array $settings Sharing settings.
1392	*/
1393	public function __construct( $id, array $settings ) {
1394	parent::__construct( $id, $settings );
1395
1396	if ( 'official' === $this->button_style ) {
1397	$this->smart = true;
1398	} else {
1399	$this->smart = false;
1400	}
1401	}
1402
1403	/**
1404	* Service name.
1405	*
1406	* @return string
1407	*/
1408	public function get_name() {
1409	return __( 'LinkedIn', 'jetpack' );
1410	}
1411
1412	/**
1413	* Does this sharing source have a custom style.
1414	*
1415	* @return bool
1416	*/
1417	public function has_custom_button_style() {
1418	return $this->smart;
1419	}
1420
1421	/**
1422	* Get the markup of the sharing button.
1423	*
1424	* @param WP_Post $post Post object.
1425	*
1426	* @return string
1427	*/
1428	public function get_display( $post ) {
1429	$display = '';
1430
1431	if ( $this->smart ) {
1432	$share_url = $this->get_share_url( $post->ID );
1433	$display .= sprintf( '<div class="linkedin_button"><script type="in/share" data-url="%s" data-counter="right"></script></div>', esc_url( $share_url ) );
1434	} else {
1435	$display = $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'LinkedIn', 'share to', 'jetpack' ), __( 'Click to share on LinkedIn', 'jetpack' ), 'share=linkedin', 'sharing-linkedin-' . $post->ID );
1436	}
1437
1438	/** This filter is already documented in modules/sharedaddy/sharing-sources.php */
1439	if ( apply_filters( 'jetpack_register_post_for_share_counts', true, $post->ID, 'linkedin' ) ) {
1440	sharing_register_post_for_share_counts( $post->ID );
1441	}
1442
1443	return $display;
1444	}
1445
1446	/**
1447	* Process sharing request. Add actions that need to happen when sharing here.
1448	*
1449	* @param WP_Post $post Post object.
1450	* @param array $post_data Array of information about the post we're sharing.
1451	*
1452	* @return void
1453	*/
1454	public function process_request( $post, array $post_data ) {
1455
1456	$post_link = $this->get_share_url( $post->ID );
1457
1458	// Using the same URL as the official button, which is not LinkedIn's documented sharing link
1459	// https://www.linkedin.com/cws/share?url={url}&token=&isFramed=false
1460	$linkedin_url = add_query_arg(
1461	array(
1462	'url' => rawurlencode( $post_link ),
1463	),
1464	'https://www.linkedin.com/cws/share?token=&isFramed=false'
1465	);
1466
1467	// Record stats
1468	parent::process_request( $post, $post_data );
1469
1470	parent::redirect_request( $linkedin_url );
1471	}
1472
1473	/**
1474	* Add content specific to a service in the footer.
1475	*/
1476	public function display_footer() {
1477	if ( ! $this->smart ) {
1478	$this->js_dialog(
1479	$this->shortname,
1480	array(
1481	'width' => 580,
1482	'height' => 450,
1483	)
1484	);
1485	} else {
1486	?>
1487	<script type="text/javascript">
1488	( function () {
1489	var currentScript = document.currentScript;
1490
1491	// Helper function to load an external script.
1492	function loadScript( url, cb ) {
1493	var script = document.createElement( 'script' );
1494	var prev = currentScript \|\| document.getElementsByTagName( 'script' )[ 0 ];
1495	script.setAttribute( 'async', true );
1496	script.setAttribute( 'src', url );
1497	prev.parentNode.insertBefore( script, prev );
1498	script.addEventListener( 'load', cb );
1499	}
1500
1501	function init() {
1502	loadScript( 'https://platform.linkedin.com/in.js?async=true', function () {
1503	if ( typeof IN !== 'undefined' ) {
1504	IN.init();
1505	}
1506	} );
1507	}
1508
1509	if ( document.readyState === 'loading' ) {
1510	document.addEventListener( 'DOMContentLoaded', init );
1511	} else {
1512	init();
1513	}
1514
1515	document.body.addEventListener( 'is.post-load', function() {
1516	if ( typeof IN !== 'undefined' ) {
1517	IN.parse();
1518	}
1519	} );
1520	} )();
1521	</script>
1522	<?php
1523	}
1524	}
1525	}
1526
1527	/**
1528	* Facebook sharing button.
1529	*/
1530	class Share_Facebook extends Sharing_Source {
1531	/**
1532	* Service short name.
1533	*
1534	* @var string
1535	*/
1536	public $shortname = 'facebook';
1537
1538	/**
1539	* Service icon font code.
1540	*
1541	* @var string
1542	*/
1543	public $icon = '\f204';
1544
1545	/**
1546	* Sharing type.
1547	*
1548	* @var string
1549	*/
1550	private $share_type = 'default';
1551
1552	/**
1553	* Constructor.
1554	*
1555	* @param int $id Sharing source ID.
1556	* @param array $settings Sharing settings.
1557	*/
1558	public function __construct( $id, array $settings ) {
1559	parent::__construct( $id, $settings );
1560
1561	if ( isset( $settings['share_type'] ) ) {
1562	$this->share_type = $settings['share_type'];
1563	}
1564
1565	if ( 'official' === $this->button_style ) {
1566	$this->smart = true;
1567	} else {
1568	$this->smart = false;
1569	}
1570	}
1571
1572	/**
1573	* Service name.
1574	*
1575	* @return string
1576	*/
1577	public function get_name() {
1578	return __( 'Facebook', 'jetpack' );
1579	}
1580
1581	/**
1582	* Add content specific to a service in the head.
1583	*/
1584	public function display_header() {
1585	}
1586
1587	/**
1588	* Guess locale from language code.
1589	*
1590	* @param string $lang Language code.
1591	*
1592	* @return string\|bool
1593	*/
1594	public function guess_locale_from_lang( $lang ) {
1595	if ( 'en' === $lang \|\| 'en_US' === $lang \|\| ! $lang ) {
1596	return 'en_US';
1597	}
1598
1599	if ( ! class_exists( 'GP_Locales' ) ) {
1600	if ( ! defined( 'JETPACK__GLOTPRESS_LOCALES_PATH' ) \|\| ! file_exists( JETPACK__GLOTPRESS_LOCALES_PATH ) ) {
1601	return false;
1602	}
1603
1604	require JETPACK__GLOTPRESS_LOCALES_PATH;
1605	}
1606
1607	if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
1608	// WP.com: get_locale() returns 'it'
1609	$locale = GP_Locales::by_slug( $lang );
1610	} else {
1611	// Jetpack: get_locale() returns 'it_IT';
1612	$locale = GP_Locales::by_field( 'wp_locale', $lang );
1613	}
1614
1615	if ( ! $locale ) {
1616	return false;
1617	}
1618
1619	if ( empty( $locale->facebook_locale ) ) {
1620	if ( empty( $locale->wp_locale ) ) {
1621	return false;
1622	} else {
1623	// Facebook SDK is smart enough to fall back to en_US if a
1624	// locale isn't supported. Since supported Facebook locales
1625	// can fall out of sync, we'll attempt to use the known
1626	// wp_locale value and rely on said fallback.
1627	return $locale->wp_locale;
1628	}
1629	}
1630
1631	return $locale->facebook_locale;
1632	}
1633
1634	/**
1635	* Get the markup of the sharing button.
1636	*
1637	* @param WP_Post $post Post object.
1638	*
1639	* @return string
1640	*/
1641	public function get_display( $post ) {
1642	if ( $this->smart ) {
1643	$share_url = $this->get_share_url( $post->ID );
1644	$fb_share_html = '<div class="fb-share-button" data-href="' . esc_attr( $share_url ) . '" data-layout="button_count"></div>';
1645	/**
1646	* Filter the output of the Facebook Sharing button.
1647	*
1648	* @module sharedaddy
1649	*
1650	* @since 3.6.0
1651	*
1652	* @param string $fb_share_html Facebook Sharing button HTML.
1653	* @param string $share_url URL of the post to share.
1654	*/
1655	return apply_filters( 'jetpack_sharing_facebook_official_button_output', $fb_share_html, $share_url );
1656	}
1657
1658	/** This filter is already documented in modules/sharedaddy/sharing-sources.php */
1659	if ( apply_filters( 'jetpack_register_post_for_share_counts', true, $post->ID, 'facebook' ) ) {
1660	sharing_register_post_for_share_counts( $post->ID );
1661	}
1662	return $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'Facebook', 'share to', 'jetpack' ), __( 'Click to share on Facebook', 'jetpack' ), 'share=facebook', 'sharing-facebook-' . $post->ID );
1663	}
1664
1665	/**
1666	* AMP display for Facebook.
1667	*
1668	* @param \WP_Post $post The current post being viewed.
1669	*/
1670	public function get_amp_display( $post ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
1671	$attrs = array(
1672	/** This filter is documented in modules/sharedaddy/sharing-sources.php */
1673	'data-param-app_id' => apply_filters( 'jetpack_sharing_facebook_app_id', '249643311490' ),
1674	);
1675
1676	return $this->build_amp_markup( $attrs );
1677	}
1678
1679	/**
1680	* Process sharing request. Add actions that need to happen when sharing here.
1681	*
1682	* @param WP_Post $post Post object.
1683	* @param array $post_data Array of information about the post we're sharing.
1684	*
1685	* @return void
1686	*/
1687	public function process_request( $post, array $post_data ) {
1688	$fb_url = $this->http() . '://www.facebook.com/sharer.php?u=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&t=' . rawurlencode( $this->get_share_title( $post->ID ) );
1689
1690	// Record stats
1691	parent::process_request( $post, $post_data );
1692
1693	parent::redirect_request( $fb_url );
1694	}
1695
1696	/**
1697	* Add content specific to a service in the footer.
1698	*/
1699	public function display_footer() {
1700	$this->js_dialog( $this->shortname );
1701	if ( $this->smart ) {
1702	$locale = $this->guess_locale_from_lang( get_locale() );
1703	if ( ! $locale ) {
1704	$locale = 'en_US';
1705	}
1706	/**
1707	* Filter the App ID used in the official Facebook Share button.
1708	*
1709	* @since 3.8.0
1710	*
1711	* @param int $fb_app_id Facebook App ID. Default to 249643311490 (WordPress.com's App ID).
1712	*/
1713	$fb_app_id = apply_filters( 'jetpack_sharing_facebook_app_id', '249643311490' );
1714	if ( is_numeric( $fb_app_id ) ) {
1715	$fb_app_id = '&appId=' . $fb_app_id;
1716	} else {
1717	$fb_app_id = '';
1718	}
1719	?>
1720	<div id="fb-root"></div>
1721	<script>(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = 'https://connect.facebook.net/<?php echo esc_attr( $locale ); ?>/sdk.js#xfbml=1<?php echo esc_attr( $fb_app_id ); ?>&version=v2.3'; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk'));</script>
1722	<script>
1723	document.body.addEventListener( 'is.post-load', function() {
1724	if ( 'undefined' !== typeof FB ) {
1725	FB.XFBML.parse();
1726	}
1727	} );
1728	</script>
1729	<?php
1730	}
1731	}
1732	}
1733
1734	/**
1735	* Print button.
1736	*/
1737	class Share_Print extends Sharing_Source {
1738	/**
1739	* Service short name.
1740	*
1741	* @var string
1742	*/
1743	public $shortname = 'print';
1744
1745	/**
1746	* Service icon font code.
1747	*
1748	* @var string
1749	*/
1750	public $icon = '\f469';
1751
1752	/**
1753	* Constructor.
1754	*
1755	* @param int $id Sharing source ID.
1756	* @param array $settings Sharing settings.
1757	*/
1758	public function __construct( $id, array $settings ) {
1759	parent::__construct( $id, $settings );
1760
1761	if ( 'official' === $this->button_style ) {
1762	$this->smart = true;
1763	} else {
1764	$this->smart = false;
1765	}
1766	}
1767
1768	/**
1769	* Service name.
1770	*
1771	* @return string
1772	*/
1773	public function get_name() {
1774	return __( 'Print', 'jetpack' );
1775	}
1776
1777	/**
1778	* Get the markup of the sharing button.
1779	*
1780	* @param WP_Post $post Post object.
1781	*
1782	* @return string
1783	*/
1784	public function get_display( $post ) {
1785	return $this->get_link( $this->get_process_request_url( $post->ID ) . ( ( is_single() \|\| is_page() ) ? '#print' : '' ), _x( 'Print', 'share to', 'jetpack' ), __( 'Click to print', 'jetpack' ) );
1786	}
1787
1788	/**
1789	* AMP display for Print.
1790	*
1791	* @param \WP_Post $post The current post being viewed.
1792	*/
1793	public function get_amp_display( $post ) {
1794	if ( empty( $post ) ) {
1795	return false;
1796	}
1797
1798	return '<button class="amp-social-share print" on="tap:AMP.print">Print</button>';
1799	}
1800	}
1801
1802	/**
1803	* Press This Button.
1804	*/
1805	class Share_PressThis extends Sharing_Source {
1806	/**
1807	* Service short name.
1808	*
1809	* @var string
1810	*/
1811	public $shortname = 'pressthis';
1812
1813	/**
1814	* Service icon font code.
1815	*
1816	* @var string
1817	*/
1818	public $icon = '\f205';
1819
1820	/**
1821	* Constructor.
1822	*
1823	* @param int $id Sharing source ID.
1824	* @param array $settings Sharing settings.
1825	*/
1826	public function __construct( $id, array $settings ) {
1827	parent::__construct( $id, $settings );
1828
1829	if ( 'official' === $this->button_style ) {
1830	$this->smart = true;
1831	} else {
1832	$this->smart = false;
1833	}
1834	}
1835
1836	/**
1837	* Service name.
1838	*
1839	* @return string
1840	*/
1841	public function get_name() {
1842	return __( 'Press This', 'jetpack' );
1843	}
1844
1845	/**
1846	* Process sharing request. Add actions that need to happen when sharing here.
1847	*
1848	* @param WP_Post $post Post object.
1849	* @param array $post_data Array of information about the post we're sharing.
1850	*
1851	* @return void
1852	*/
1853	public function process_request( $post, array $post_data ) {
1854	global $current_user;
1855
1856	$primary_blog = (int) get_user_meta( $current_user->ID, 'primary_blog', true );
1857	if ( $primary_blog ) {
1858	$primary_blog_details = get_blog_details( $primary_blog );
1859	} else {
1860	$primary_blog_details = false;
1861	}
1862
1863	if ( $primary_blog_details ) {
1864	$blogs = array( $primary_blog_details );
1865	} elseif ( function_exists( 'get_active_blogs_for_user' ) ) {
1866	$blogs = get_active_blogs_for_user();
1867	if ( empty( $blogs ) ) {
1868	$blogs = get_blogs_of_user( $current_user->ID );
1869	}
1870	} else {
1871	$blogs = get_blogs_of_user( $current_user->ID );
1872	}
1873
1874	if ( empty( $blogs ) ) {
1875	wp_safe_redirect( get_permalink( $post->ID ) );
1876	die();
1877	}
1878
1879	$blog = current( $blogs );
1880
1881	$args = array(
1882	'u' => rawurlencode( $this->get_share_url( $post->ID ) ),
1883	);
1884
1885	$args['url-scan-submit'] = 'Scan';
1886	$args['_wpnonce'] = wp_create_nonce( 'scan-site' );
1887
1888	$url = $blog->siteurl . '/wp-admin/press-this.php';
1889	$url = add_query_arg( $args, $url );
1890
1891	// Record stats
1892	parent::process_request( $post, $post_data );
1893
1894	parent::redirect_request( $url );
1895	}
1896
1897	/**
1898	* Get the markup of the sharing button.
1899	*
1900	* @param WP_Post $post Post object.
1901	*
1902	* @return string
1903	*/
1904	public function get_display( $post ) {
1905	return $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'Press This', 'share to', 'jetpack' ), __( 'Click to Press This!', 'jetpack' ), 'share=press-this' );
1906	}
1907
1908	/**
1909	* No AMP display for PressThis.
1910	*
1911	* @param \WP_Post $post The current post being viewed.
1912	*/
1913	public function get_amp_display( $post ) { // phpcs:ignore
1914	return false;
1915	}
1916	}
1917
1918	/**
1919	* Custom (user-defined) sharing button.
1920	*/
1921	class Share_Custom extends Sharing_Advanced_Source {
1922	/**
1923	* Sharing service name.
1924	*
1925	* @var string
1926	*/
1927	private $name;
1928
1929	/**
1930	* Sharing icon.
1931	*
1932	* @var string
1933	*/
1934	private $icon;
1935
1936	/**
1937	* Sharing service URL.
1938	*
1939	* @var string
1940	*/
1941	private $url;
1942
1943	/**
1944	* Does the service have an official version.
1945	*
1946	* @var bool
1947	*/
1948	public $smart = true;
1949
1950	/**
1951	* Service short name.
1952	*
1953	* @var string
1954	*/
1955	public $shortname;
1956
1957	/**
1958	* Custom sharing class.
1959	*
1960	* @return string
1961	*/
1962	public function get_class() {
1963	return 'custom share-custom-' . sanitize_html_class( strtolower( $this->name ) );
1964	}
1965
1966	/**
1967	* Constructor.
1968	*
1969	* @param int $id Sharing source ID.
1970	* @param array $settings Sharing settings.
1971	*/
1972	public function __construct( $id, array $settings ) {
1973	parent::__construct( $id, $settings );
1974
1975	if ( isset( $settings['name'] ) ) {
1976	$this->name = $settings['name'];
1977	$this->shortname = preg_replace( '/[^a-z0-9]*/', '', $settings['name'] );
1978	}
1979
1980	if ( isset( $settings['icon'] ) ) {
1981	$this->icon = $settings['icon'];
1982
1983	$new_icon = esc_url_raw( wp_specialchars_decode( $this->icon, ENT_QUOTES ) );
1984	$i = 0;
1985	while ( $new_icon !== $this->icon ) {
1986	if ( $i > 5 ) {
1987	$this->icon = false;
1988	break;
1989	} else {
1990	$this->icon = $new_icon;
1991	$new_icon = esc_url_raw( wp_specialchars_decode( $this->icon, ENT_QUOTES ) );
1992	}
1993	$i++;
1994	}
1995	}
1996
1997	if ( isset( $settings['url'] ) ) {
1998	$this->url = $settings['url'];
1999	}
2000	}
2001
2002	/**
2003	* Service name.
2004	*
2005	* @return string
2006	*/
2007	public function get_name() {
2008	return $this->name;
2009	}
2010
2011	/**
2012	* Get the markup of the sharing button.
2013	*
2014	* @param WP_Post $post Post object.
2015	*
2016	* @return string
2017	*/
2018	public function get_display( $post ) {
2019	$str = $this->get_link(
2020	$this->get_process_request_url( $post->ID ),
2021	esc_html( $this->name ),
2022	sprintf(
2023	/* Translators: placeholder is the name of a social network. */
2024	__( 'Click to share on %s', 'jetpack' ),
2025	esc_attr( $this->name )
2026	),
2027	'share=' . $this->id
2028	);
2029	return str_replace( '<span>', '<span style="' . esc_attr( 'background-image:url("' . addcslashes( esc_url_raw( $this->icon ), '"' ) . '");' ) . '">', $str );
2030	}
2031
2032	/**
2033	* No AMP display for custom elements.
2034	*
2035	* @param \WP_Post $post The current post being viewed.
2036	*/
2037	public function get_amp_display( $post ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
2038	return false;
2039	}
2040
2041	/**
2042	* Process sharing request. Add actions that need to happen when sharing here.
2043	*
2044	* @param WP_Post $post Post object.
2045	* @param array $post_data Array of information about the post we're sharing.
2046	*
2047	* @return void
2048	*/
2049	public function process_request( $post, array $post_data ) {
2050	$url = str_replace( '&', '&', $this->url );
2051	$url = str_replace( '%post_id%', rawurlencode( $post->ID ), $url );
2052	$url = str_replace( '%post_url%', rawurlencode( $this->get_share_url( $post->ID ) ), $url );
2053	$url = str_replace( '%post_full_url%', rawurlencode( get_permalink( $post->ID ) ), $url );
2054	$url = str_replace( '%post_title%', rawurlencode( $this->get_share_title( $post->ID ) ), $url );
2055	$url = str_replace( '%home_url%', rawurlencode( home_url() ), $url );
2056	$url = str_replace( '%post_slug%', rawurlencode( $post->post_name ), $url );
2057
2058	if ( strpos( $url, '%post_tags%' ) !== false ) {
2059	$tags = get_the_tags( $post->ID );
2060	$tagged = '';
2061
2062	if ( $tags ) {
2063	$tagged_raw = array();
2064	foreach ( $tags as $tag ) {
2065	$tagged_raw[] = rawurlencode( $tag->name );
2066	}
2067
2068	$tagged = implode( ',', $tagged_raw );
2069	}
2070
2071	$url = str_replace( '%post_tags%', $tagged, $url );
2072	}
2073
2074	if ( strpos( $url, '%post_excerpt%' ) !== false ) {
2075	$url_excerpt = $post->post_excerpt;
2076	if ( empty( $url_excerpt ) ) {
2077	$url_excerpt = $post->post_content;
2078	}
2079
2080	$url_excerpt = wp_strip_all_tags( strip_shortcodes( $url_excerpt ) );
2081	$url_excerpt = wp_html_excerpt( $url_excerpt, 100 );
2082	$url_excerpt = rtrim( preg_replace( '/[^ .]*$/', '', $url_excerpt ) );
2083	$url = str_replace( '%post_excerpt%', rawurlencode( $url_excerpt ), $url );
2084	}
2085
2086	// Record stats
2087	parent::process_request( $post, $post_data );
2088
2089	parent::redirect_request( $url );
2090	}
2091
2092	/**
2093	* Display options for our sharing buttons.
2094	*
2095	* @return void
2096	*/
2097	public function display_options() {
2098	?>
2099	<div class="input">
2100	<table class="form-table">
2101	<tbody>
2102	<tr>
2103	<th scope="row"><?php esc_html_e( 'Label', 'jetpack' ); ?></th>
2104	<td><input type="text" name="name" value="<?php echo esc_attr( $this->name ); ?>" /></td>
2105	</tr>
2106
2107	<tr>
2108	<th scope="row"><?php esc_html_e( 'URL', 'jetpack' ); ?></th>
2109	<td><input type="text" name="url" value="<?php echo esc_attr( $this->url ); ?>" /></td>
2110	</tr>
2111
2112	<tr>
2113	<th scope="row"><?php esc_html_e( 'Icon', 'jetpack' ); ?></th>
2114	<td><input type="text" name="icon" value="<?php echo esc_attr( $this->icon ); ?>" /></td>
2115	</tr>
2116
2117	<tr>
2118	<th scope="row"></th>
2119	<td>
2120	<input class="button-secondary" type="submit" value="<?php esc_attr_e( 'Save', 'jetpack' ); ?>" />
2121	<a href="#" class="remove"><small><?php esc_html_e( 'Remove Service', 'jetpack' ); ?></small></a>
2122	</td>
2123	</tr>
2124	</tbody>
2125	</table>
2126	</div>
2127	<?php
2128	}
2129
2130	/**
2131	* Sanitize and save options for our sharing buttons.
2132	*
2133	* @param array $data Data to be saved.
2134	*
2135	* @return void
2136	*/
2137	public function update_options( array $data ) {
2138	$name = trim( wp_html_excerpt( wp_kses( stripslashes( $data['name'] ), array() ), 30 ) );
2139	$url = trim( esc_url_raw( $data['url'] ) );
2140	$icon = trim( esc_url_raw( $data['icon'] ) );
2141
2142	if ( $name ) {
2143	$this->name = $name;
2144	}
2145
2146	if ( $url ) {
2147	$this->url = $url;
2148	}
2149
2150	if ( $icon ) {
2151	$this->icon = $icon;
2152	}
2153	}
2154
2155	/**
2156	* Get array of information about the service.
2157	*
2158	* @return array
2159	*/
2160	public function get_options() {
2161	return array(
2162	'name' => $this->name,
2163	'icon' => $this->icon,
2164	'url' => $this->url,
2165	);
2166	}
2167
2168	/**
2169	* Display a preview of the sharing button.
2170	*
2171	* @param bool $echo Whether to echo the output or return it.
2172	* @param bool $force_smart Whether to force the smart (official) services to be shown.
2173	* @param null\|string $button_style Button style.
2174	*
2175	* @return void
2176	*/
2177	public function display_preview( $echo = true, $force_smart = false, $button_style = null ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
2178	$opts = $this->get_options();
2179
2180	$text = ' ';
2181	if ( ! $this->smart ) {
2182	if ( $this->button_style !== 'icon' ) {
2183	$text = $this->get_name();
2184	}
2185	}
2186
2187	$klasses = array( 'share-' . $this->shortname );
2188
2189	if ( $this->button_style === 'icon' \|\| $this->button_style === 'icon-text' ) {
2190	$klasses[] = 'share-icon';
2191	}
2192
2193	if ( $this->button_style === 'icon' ) {
2194	$text = '';
2195	$klasses[] = 'no-text';
2196	}
2197
2198	if ( $this->button_style === 'text' ) {
2199	$klasses[] = 'no-icon';
2200	}
2201
2202	$link = sprintf(
2203	'<a rel="nofollow" class="%s" href="javascript:void(0)" title="%s"><span style="background-image:url("%s") !important;background-position:left center;background-repeat:no-repeat;">%s</span></a>',
2204	esc_attr( implode( ' ', $klasses ) ),
2205	esc_attr( $this->get_name() ),
2206	addcslashes( esc_url_raw( $opts['icon'] ), '"' ),
2207	esc_html( $text )
2208	);
2209	?>
2210	<div class="option option-smart-off">
2211	<?php echo $link; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- escaped above. ?>
2212	</div>
2213	<?php
2214	}
2215	}
2216
2217	/**
2218	* Tumblr sharing service.
2219	*/
2220	class Share_Tumblr extends Sharing_Source {
2221	/**
2222	* Service short name.
2223	*
2224	* @var string
2225	*/
2226	public $shortname = 'tumblr';
2227
2228	/**
2229	* Service icon font code.
2230	*
2231	* @var string
2232	*/
2233	public $icon = '\f214';
2234
2235	/**
2236	* Constructor.
2237	*
2238	* @param int $id Sharing source ID.
2239	* @param array $settings Sharing settings.
2240	*/
2241	public function __construct( $id, array $settings ) {
2242	parent::__construct( $id, $settings );
2243	if ( 'official' === $this->button_style ) {
2244	$this->smart = true;
2245	} else {
2246	$this->smart = false;
2247	}
2248	}
2249
2250	/**
2251	* Service name.
2252	*
2253	* @return string
2254	*/
2255	public function get_name() {
2256	return __( 'Tumblr', 'jetpack' );
2257	}
2258
2259	/**
2260	* Get the markup of the sharing button.
2261	*
2262	* @param WP_Post $post Post object.
2263	*
2264	* @return string
2265	*/
2266	public function get_display( $post ) {
2267	if ( $this->smart ) {
2268	$target = '';
2269	if ( true === $this->open_link_in_new ) {
2270	$target = '_blank';
2271	}
2272
2273	/**
2274	* If we are looking at a single post, let Tumblr figure out the post type (text, photo, link, quote, chat, or video)
2275	* based on the content available on the page.
2276	* If we are not looking at a single post, content from other posts can appear on the page and Tumblr will pick that up.
2277	* In this case, we want Tumblr to focus on our current post, so we will limit the post type to link, where we can give Tumblr a link to our post.
2278	*/
2279	if ( ! is_single() ) {
2280	$posttype = 'data-posttype="link"';
2281	} else {
2282	$posttype = '';
2283	}
2284
2285	// Documentation: https://www.tumblr.com/docs/en/share_button
2286	return sprintf(
2287	'<a class="tumblr-share-button" target="%1$s" href="%2$s" data-title="%3$s" data-content="%4$s" title="%5$s"%6$s>%5$s</a>',
2288	$target,
2289	'https://www.tumblr.com/share',
2290	$this->get_share_title( $post->ID ),
2291	$this->get_share_url( $post->ID ),
2292	__( 'Share on Tumblr', 'jetpack' ),
2293	$posttype
2294	);
2295	} else {
2296	return $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'Tumblr', 'share to', 'jetpack' ), __( 'Click to share on Tumblr', 'jetpack' ), 'share=tumblr' );
2297	}
2298	}
2299
2300	/**
2301	* Process sharing request. Add actions that need to happen when sharing here.
2302	*
2303	* @param WP_Post $post Post object.
2304	* @param array $post_data Array of information about the post we're sharing.
2305	*
2306	* @return void
2307	*/
2308	public function process_request( $post, array $post_data ) {
2309	// Record stats
2310	parent::process_request( $post, $post_data );
2311
2312	// Redirect to Tumblr's sharing endpoint (a la their bookmarklet)
2313	$url = 'https://www.tumblr.com/share?v=3&u=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&t=' . rawurlencode( $this->get_share_title( $post->ID ) ) . '&s=';
2314
2315	parent::redirect_request( $url );
2316	}
2317
2318	/**
2319	* Add content specific to a service in the footer.
2320	*/
2321	public function display_footer() {
2322	if ( $this->smart ) {
2323	// phpcs:disable WordPress.WP.EnqueuedResources.NonEnqueuedScript
2324	?>
2325	<script id="tumblr-js" type="text/javascript" src="https://assets.tumblr.com/share-button.js"></script>
2326	<?php
2327	// phpcs:enable WordPress.WP.EnqueuedResources.NonEnqueuedScript
2328	} else {
2329	$this->js_dialog(
2330	$this->shortname,
2331	array(
2332	'width' => 450,
2333	'height' => 450,
2334	)
2335	);
2336	}
2337	}
2338	}
2339
2340	/**
2341	* Pinterest sharing service.
2342	*/
2343	class Share_Pinterest extends Sharing_Source {
2344	/**
2345	* Service short name.
2346	*
2347	* @var string
2348	*/
2349	public $shortname = 'pinterest';
2350
2351	/**
2352	* Service icon font code.
2353	*
2354	* @var string
2355	*/
2356	public $icon = '\f209';
2357
2358	/**
2359	* Constructor.
2360	*
2361	* @param int $id Sharing source ID.
2362	* @param array $settings Sharing settings.
2363	*/
2364	public function __construct( $id, array $settings ) {
2365	parent::__construct( $id, $settings );
2366	if ( 'official' === $this->button_style ) {
2367	$this->smart = true;
2368	} else {
2369	$this->smart = false;
2370	}
2371	}
2372
2373	/**
2374	* Service name.
2375	*
2376	* @return string
2377	*/
2378	public function get_name() {
2379	return __( 'Pinterest', 'jetpack' );
2380	}
2381
2382	/**
2383	* Get image representative of the post to pass on to Pinterest.
2384	*
2385	* @param WP_Post $post Post object.
2386	*
2387	* @return string
2388	*/
2389	public function get_image( $post ) {
2390	if ( class_exists( 'Jetpack_PostImages' ) ) {
2391	$image = Jetpack_PostImages::get_image( $post->ID, array( 'fallback_to_avatars' => true ) );
2392	if ( ! empty( $image ) ) {
2393	return $image['src'];
2394	}
2395	}
2396
2397	/**
2398	* Filters the default image used by the Pinterest Pin It share button.
2399	*
2400	* @module sharedaddy
2401	*
2402	* @since 3.6.0
2403	*
2404	* @param string $url Default image URL.
2405	*/
2406	return apply_filters( 'jetpack_sharing_pinterest_default_image', 'https://s0.wp.com/i/blank.jpg' );
2407	}
2408
2409	/**
2410	* Get Pinterest external sharing URL.
2411	*
2412	* @param WP_Post $post Post object.
2413	*
2414	* @return string
2415	*/
2416	public function get_external_url( $post ) {
2417	$url = 'https://www.pinterest.com/pin/create/button/?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&media=' . rawurlencode( $this->get_image( $post ) ) . '&description=' . rawurlencode( $post->post_title );
2418
2419	/**
2420	* Filters the Pinterest share URL used in sharing button output.
2421	*
2422	* @module sharedaddy
2423	*
2424	* @since 3.6.0
2425	*
2426	* @param string $url Pinterest share URL.
2427	*/
2428	return apply_filters( 'jetpack_sharing_pinterest_share_url', $url );
2429	}
2430
2431	/**
2432	* Get Pinterest widget type.
2433	*
2434	* @return string
2435	*/
2436	public function get_widget_type() {
2437	/**
2438	* Filters the Pinterest widget type.
2439	*
2440	* @see https://business.pinterest.com/en/widget-builder
2441	*
2442	* @module sharedaddy
2443	*
2444	* @since 3.6.0
2445	*
2446	* @param string $type Pinterest widget type. Default of 'buttonPin' for single-image selection. 'buttonBookmark' for multi-image modal.
2447	*/
2448	return apply_filters( 'jetpack_sharing_pinterest_widget_type', 'buttonPin' );
2449	}
2450
2451	/**
2452	* Get the markup of the sharing button.
2453	*
2454	* @param WP_Post $post Post object.
2455	*
2456	* @return string
2457	*/
2458	public function get_display( $post ) {
2459	$display = '';
2460
2461	if ( $this->smart ) {
2462	$display = sprintf(
2463	'<div class="pinterest_button"><a href="%s" data-pin-do="%s" data-pin-config="beside"><img src="//assets.pinterest.com/images/pidgets/pinit_fg_en_rect_gray_20.png" /></a></div>',
2464	esc_url( $this->get_external_url( $post ) ),
2465	esc_attr( $this->get_widget_type() )
2466	);
2467	} else {
2468	$display = $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'Pinterest', 'share to', 'jetpack' ), __( 'Click to share on Pinterest', 'jetpack' ), 'share=pinterest', 'sharing-pinterest-' . $post->ID );
2469	}
2470
2471	/** This filter is already documented in modules/sharedaddy/sharing-sources.php */
2472	if ( apply_filters( 'jetpack_register_post_for_share_counts', true, $post->ID, 'linkedin' ) ) {
2473	sharing_register_post_for_share_counts( $post->ID );
2474	}
2475
2476	return $display;
2477	}
2478
2479	/**
2480	* Process sharing request. Add actions that need to happen when sharing here.
2481	*
2482	* @param WP_Post $post Post object.
2483	* @param array $post_data Array of information about the post we're sharing.
2484	*
2485	* @return void
2486	*/
2487	public function process_request( $post, array $post_data ) {
2488	// Record stats
2489	parent::process_request( $post, $post_data );
2490	// If we're triggering the multi-select panel, then we don't need to redirect to Pinterest
2491	if ( ! isset( $_GET['js_only'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
2492	$pinterest_url = esc_url_raw( $this->get_external_url( $post ) );
2493	parent::redirect_request( $pinterest_url );
2494	} else {
2495	echo '// share count bumped';
2496	die();
2497	}
2498	}
2499
2500	/**
2501	* Add content specific to a service in the footer.
2502	*/
2503	public function display_footer() {
2504	/**
2505	* Filter the Pin it button appearing when hovering over images when using the official button style.
2506	*
2507	* @module sharedaddy
2508	*
2509	* @since 3.6.0
2510	*
2511	* @param bool $jetpack_pinit_over True by default, displays the Pin it button when hovering over images.
2512	*/
2513	$jetpack_pinit_over = apply_filters( 'jetpack_pinit_over_button', true );
2514	?>
2515	<?php if ( $this->smart ) : ?>
2516	<script type="text/javascript">
2517	( function () {
2518	// Pinterest shared resources
2519	var s = document.createElement( 'script' );
2520	s.type = 'text/javascript';
2521	s.async = true;
2522	<?php
2523	if ( $jetpack_pinit_over ) {
2524	echo "s.setAttribute( 'data-pin-hover', true );";
2525	}
2526	?>
2527	s.src = window.location.protocol + '//assets.pinterest.com/js/pinit.js';
2528	var x = document.getElementsByTagName( 'script' )[ 0 ];
2529	x.parentNode.insertBefore(s, x);
2530	// if 'Pin it' button has 'counts' make container wider
2531	function init() {
2532	var shares = document.querySelectorAll( 'li.share-pinterest' );
2533	for ( var i = 0; i < shares.length; i++ ) {
2534	var share = shares[ i ];
2535	if ( share.querySelector( 'a span:visible' ) ) {
2536	share.style.width = '80px';
2537	}
2538	}
2539	}
2540
2541	if ( document.readyState !== 'complete' ) {
2542	document.addEventListener( 'load', init );
2543	} else {
2544	init();
2545	}
2546	} )();
2547	</script>
2548	<?php elseif ( 'buttonPin' !== $this->get_widget_type() ) : ?>
2549	<script type="text/javascript">
2550	( function () {
2551	function init() {
2552	document.body.addEventListener( 'click', function ( e ) {
2553	if ( e.target && (
2554	e.target.matches && e.target.matches( 'a.share-pinterest' ) \|\|
2555	e.target.msMatchesSelector && e.target.msMatchesSelector( 'a.share-pinterest' )
2556	) ) {
2557	e.preventDefault();
2558	// Load Pinterest Bookmarklet code
2559	var s = document.createElement( 'script' );
2560	s.type = 'text/javascript';
2561	s.src = window.location.protocol + '//assets.pinterest.com/js/pinmarklet.js?r=' + ( Math.random() * 99999999 );
2562	var x = document.getElementsByTagName( 'script' )[ 0 ];
2563	x.parentNode.insertBefore( s, x );
2564	// Trigger Stats
2565	var s = document.createElement( 'script' );
2566	s.type = 'text/javascript';
2567	s.src = e.target.href + ( e.target.href.indexOf( '?' ) ? '&' : '?' ) + 'js_only=1';
2568	var x = document.getElementsByTagName( 'script' )[ '0' ];
2569	x.parentNode.insertBefore( s, x );
2570	}
2571	} );
2572	}
2573
2574	if ( document.readyState === 'loading' ) {
2575	document.addEventListener( 'DOMContentLoaded', init );
2576	} else {
2577	init();
2578	}
2579	} )();
2580	</script>
2581	<?php
2582	endif;
2583	}
2584	}
2585
2586	/**
2587	* Pocket sharing service.
2588	*/
2589	class Share_Pocket extends Sharing_Source {
2590	/**
2591	* Service short name.
2592	*
2593	* @var string
2594	*/
2595	public $shortname = 'pocket';
2596
2597	/**
2598	* Service icon font code.
2599	*
2600	* @var string
2601	*/
2602	public $icon = '\f224';
2603
2604	/**
2605	* Constructor.
2606	*
2607	* @param int $id Sharing source ID.
2608	* @param array $settings Sharing settings.
2609	*/
2610	public function __construct( $id, array $settings ) {
2611	parent::__construct( $id, $settings );
2612
2613	if ( 'official' === $this->button_style ) {
2614	$this->smart = true;
2615	} else {
2616	$this->smart = false;
2617	}
2618	}
2619
2620	/**
2621	* Service name.
2622	*
2623	* @return string
2624	*/
2625	public function get_name() {
2626	return __( 'Pocket', 'jetpack' );
2627	}
2628
2629	/**
2630	* Process sharing request. Add actions that need to happen when sharing here.
2631	*
2632	* @param WP_Post $post Post object.
2633	* @param array $post_data Array of information about the post we're sharing.
2634	*
2635	* @return void
2636	*/
2637	public function process_request( $post, array $post_data ) {
2638	// Record stats
2639	parent::process_request( $post, $post_data );
2640
2641	$pocket_url = esc_url_raw( 'https://getpocket.com/save/?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&title=' . rawurlencode( $this->get_share_title( $post->ID ) ) );
2642
2643	parent::redirect_request( $pocket_url );
2644	}
2645
2646	/**
2647	* Get the markup of the sharing button.
2648	*
2649	* @param WP_Post $post Post object.
2650	*
2651	* @return string
2652	*/
2653	public function get_display( $post ) {
2654	if ( $this->smart ) {
2655	$post_count = 'horizontal';
2656
2657	$button = '';
2658	$button .= '<div class="pocket_button">';
2659	$button .= sprintf( '<a href="https://getpocket.com/save" class="pocket-btn" data-lang="%s" data-save-url="%s" data-pocket-count="%s" >%s</a>', 'en', esc_attr( $this->get_share_url( $post->ID ) ), $post_count, esc_attr__( 'Pocket', 'jetpack' ) );
2660	$button .= '</div>';
2661
2662	return $button;
2663	} else {
2664	return $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'Pocket', 'share to', 'jetpack' ), __( 'Click to share on Pocket', 'jetpack' ), 'share=pocket' );
2665	}
2666
2667	}
2668
2669	/**
2670	* AMP display for Pocket.
2671	*
2672	* @param \WP_Post $post The current post being viewed.
2673	*/
2674	public function get_amp_display( $post ) {
2675	$attrs = array(
2676	'data-share-endpoint' => esc_url_raw( 'https://getpocket.com/save/?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&title=' . rawurlencode( $this->get_share_title( $post->ID ) ) ),
2677	);
2678
2679	return $this->build_amp_markup( $attrs );
2680	}
2681
2682	/**
2683	* Add content specific to a service in the footer.
2684	*/
2685	public function display_footer() {
2686	if ( $this->smart ) :
2687	?>
2688	<script>
2689	( function () {
2690	var currentScript = document.currentScript;
2691
2692	// Don't use Pocket's default JS as it we need to force init new Pocket share buttons loaded via JS.
2693	function jetpack_sharing_pocket_init() {
2694	var script = document.createElement( 'script' );
2695	var prev = currentScript \|\| document.getElementsByTagName( 'script' )[ 0 ];
2696	script.setAttribute( 'async', true );
2697	script.setAttribute( 'src', 'https://widgets.getpocket.com/v1/j/btn.js?v=1' );
2698	prev.parentNode.insertBefore( script, prev );
2699	}
2700
2701	if ( document.readyState === 'loading' ) {
2702	document.addEventListener( 'DOMContentLoaded', jetpack_sharing_pocket_init );
2703	} else {
2704	jetpack_sharing_pocket_init();
2705	}
2706	document.body.addEventListener( 'is.post-load', jetpack_sharing_pocket_init );
2707	} )();
2708	</script>
2709	<?php
2710	else :
2711	$this->js_dialog(
2712	$this->shortname,
2713	array(
2714	'width' => 450,
2715	'height' => 450,
2716	)
2717	);
2718	endif;
2719
2720	}
2721
2722	}
2723
2724	/**
2725	* Telegram sharing service.
2726	*/
2727	class Share_Telegram extends Sharing_Source {
2728	/**
2729	* Service short name.
2730	*
2731	* @var string
2732	*/
2733	public $shortname = 'telegram';
2734
2735	/**
2736	* Constructor.
2737	*
2738	* @param int $id Sharing source ID.
2739	* @param array $settings Sharing settings.
2740	*/
2741	public function __construct( $id, array $settings ) { // phpcs:ignore Generic.CodeAnalysis.UselessOverridingMethod.Found
2742	parent::__construct( $id, $settings );
2743	}
2744
2745	/**
2746	* Service name.
2747	*
2748	* @return string
2749	*/
2750	public function get_name() {
2751	return __( 'Telegram', 'jetpack' );
2752	}
2753
2754	/**
2755	* Process sharing request. Add actions that need to happen when sharing here.
2756	*
2757	* @param WP_Post $post Post object.
2758	* @param array $post_data Array of information about the post we're sharing.
2759	*
2760	* @return void
2761	*/
2762	public function process_request( $post, array $post_data ) {
2763	// Record stats
2764	parent::process_request( $post, $post_data );
2765
2766	$telegram_url = esc_url_raw( 'https://telegram.me/share/url?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&text=' . rawurlencode( $this->get_share_title( $post->ID ) ) );
2767
2768	parent::redirect_request( $telegram_url );
2769	}
2770
2771	/**
2772	* Get the markup of the sharing button.
2773	*
2774	* @param WP_Post $post Post object.
2775	*
2776	* @return string
2777	*/
2778	public function get_display( $post ) {
2779	return $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'Telegram', 'share to', 'jetpack' ), __( 'Click to share on Telegram', 'jetpack' ), 'share=telegram' );
2780	}
2781
2782	/**
2783	* AMP display for Telegram.
2784	*
2785	* @param \WP_Post $post The current post being viewed.
2786	*/
2787	public function get_amp_display( $post ) {
2788	$attrs = array(
2789	'data-share-endpoint' => esc_url_raw( 'https://telegram.me/share/url?url=' . rawurlencode( $this->get_share_url( $post->ID ) ) . '&text=' . rawurlencode( $this->get_share_title( $post->ID ) ) ),
2790	);
2791
2792	return $this->build_amp_markup( $attrs );
2793	}
2794
2795	/**
2796	* Add content specific to a service in the footer.
2797	*/
2798	public function display_footer() {
2799	$this->js_dialog(
2800	$this->shortname,
2801	array(
2802	'width' => 450,
2803	'height' => 450,
2804	)
2805	);
2806	}
2807	}
2808
2809	/**
2810	* WhatsApp sharing service.
2811	*/
2812	class Jetpack_Share_WhatsApp extends Sharing_Source {
2813	/**
2814	* Service short name.
2815	*
2816	* @var string
2817	*/
2818	public $shortname = 'jetpack-whatsapp';
2819
2820	/**
2821	* Constructor.
2822	*
2823	* @param int $id Sharing source ID.
2824	* @param array $settings Sharing settings.
2825	*/
2826	public function __construct( $id, array $settings ) { // phpcs:ignore Generic.CodeAnalysis.UselessOverridingMethod.Found
2827	parent::__construct( $id, $settings );
2828	}
2829
2830	/**
2831	* Service name.
2832	*
2833	* @return string
2834	*/
2835	public function get_name() {
2836	return __( 'WhatsApp', 'jetpack' );
2837	}
2838
2839	/**
2840	* Get the markup of the sharing button.
2841	*
2842	* @param WP_Post $post Post object.
2843	*
2844	* @return string
2845	*/
2846	public function get_display( $post ) {
2847	return $this->get_link( $this->get_process_request_url( $post->ID ), _x( 'WhatsApp', 'share to', 'jetpack' ), __( 'Click to share on WhatsApp', 'jetpack' ), 'share=jetpack-whatsapp' );
2848	}
2849
2850	/**
2851	* AMP display for Whatsapp.
2852	*
2853	* @param \WP_Post $post The current post being viewed.
2854	*/
2855	public function get_amp_display( $post ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
2856	$attrs = array(
2857	'type' => 'whatsapp',
2858	);
2859
2860	return $this->build_amp_markup( $attrs );
2861	}
2862
2863	/**
2864	* Process sharing request. Add actions that need to happen when sharing here.
2865	*
2866	* @param WP_Post $post Post object.
2867	* @param array $post_data Array of information about the post we're sharing.
2868	*
2869	* @return void
2870	*/
2871	public function process_request( $post, array $post_data ) {
2872	// Record stats
2873	parent::process_request( $post, $post_data );
2874
2875	// Firefox for desktop doesn't handle the "api.whatsapp.com" URL properly, so use "web.whatsapp.com"
2876	if ( User_Agent_Info::is_firefox_desktop() ) {
2877	$url = 'https://web.whatsapp.com/send?text=';
2878	} else {
2879	$url = 'https://api.whatsapp.com/send?text=';
2880	}
2881
2882	$url .= rawurlencode( $this->get_share_title( $post->ID ) . ' ' . $this->get_share_url( $post->ID ) );
2883
2884	parent::redirect_request( $url );
2885	}
2886	}
2887
2888	/**
2889	* Skype sharing service.
2890	*/
2891	class Share_Skype extends Sharing_Source {
2892	/**
2893	* Service short name.
2894	*
2895	* @var string
2896	*/
2897	public $shortname = 'skype';
2898
2899	/**
2900	* Service icon font code.
2901	*
2902	* @var string
2903	*/
2904	public $icon = '\f220';
2905
2906	/**
2907	* Sharing type.
2908	*
2909	* @var string
2910	*/
2911	private $share_type = 'default';
2912
2913	/**
2914	* Constructor.
2915	*
2916	* @param int $id Sharing source ID.
2917	* @param array $settings Sharing settings.
2918	*/
2919	public function __construct( $id, array $settings ) {
2920	parent::__construct( $id, $settings );
2921
2922	if ( isset( $settings['share_type'] ) ) {
2923	$this->share_type = $settings['share_type'];
2924	}
2925
2926	if ( 'official' === $this->button_style ) {
2927	$this->smart = true;
2928	} else {
2929	$this->smart = false;
2930	}
2931
2932	}
2933
2934	/**
2935	* Service name.
2936	*
2937	* @return string
2938	*/
2939	public function get_name() {
2940	return __( 'Skype', 'jetpack' );
2941	}
2942
2943	/**
2944	* Get the markup of the sharing button.
2945	*
2946	* @param WP_Post $post Post object.
2947	*
2948	* @return string
2949	*/
2950	public function get_display( $post ) {
2951	if ( $this->smart ) {
2952	$skype_share_html = sprintf(
2953	'<div class="skype-share" data-href="%1$s" data-lang="%2$s" data-style="small" data-source="jetpack" ></div>',
2954	esc_attr( $this->get_share_url( $post->ID ) ),
2955	'en-US'
2956	);
2957	return $skype_share_html;
2958	}
2959
2960	/** This filter is already documented in modules/sharedaddy/sharing-sources.php */
2961	if ( apply_filters( 'jetpack_register_post_for_share_counts', true, $post->ID, 'skype' ) ) {
2962	sharing_register_post_for_share_counts( $post->ID );
2963	}
2964	return $this->get_link(
2965	$this->get_process_request_url( $post->ID ),
2966	_x( 'Skype', 'share to', 'jetpack' ),
2967	__( 'Click to share on Skype', 'jetpack' ),
2968	'share=skype',
2969	'sharing-skype-' . $post->ID
2970	);
2971	}
2972
2973	/**
2974	* AMP display for Skype.
2975	*
2976	* @param \WP_Post $post The current post being viewed.
2977	*/
2978	public function get_amp_display( $post ) {
2979	$attrs = array(
2980	'data-share-endpoint' => sprintf(
2981	'https://web.skype.com/share?url=%1$s&lang=%2$s=&source=jetpack',
2982	rawurlencode( $this->get_share_url( $post->ID ) ),
2983	'en-US'
2984	),
2985	);
2986
2987	return $this->build_amp_markup( $attrs );
2988	}
2989
2990	/**
2991	* Process sharing request. Add actions that need to happen when sharing here.
2992	*
2993	* @param WP_Post $post Post object.
2994	* @param array $post_data Array of information about the post we're sharing.
2995	*
2996	* @return void
2997	*/
2998	public function process_request( $post, array $post_data ) {
2999	$skype_url = sprintf(
3000	'https://web.skype.com/share?url=%1$s&lang=%2$s=&source=jetpack',
3001	rawurlencode( $this->get_share_url( $post->ID ) ),
3002	'en-US'
3003	);
3004
3005	// Record stats
3006	parent::process_request( $post, $post_data );
3007
3008	parent::redirect_request( $skype_url );
3009	}
3010
3011	/**
3012	* Add content specific to a service in the footer.
3013	*/
3014	public function display_footer() {
3015	if ( $this->smart ) :
3016	?>
3017	<script>
3018	(function(r, d, s) {
3019	r.loadSkypeWebSdkAsync = r.loadSkypeWebSdkAsync \|\| function(p) {
3020	var js, sjs = d.getElementsByTagName(s)[0];
3021	if (d.getElementById(p.id)) { return; }
3022	js = d.createElement(s);
3023	js.id = p.id;
3024	js.src = p.scriptToLoad;
3025	js.onload = p.callback
3026	sjs.parentNode.insertBefore(js, sjs);
3027	};
3028	var p = {
3029	scriptToLoad: 'https://swx.cdn.skype.com/shared/v/latest/skypewebsdk.js',
3030	id: 'skype_web_sdk'
3031	};
3032	r.loadSkypeWebSdkAsync(p);
3033	})(window, document, 'script');
3034	</script>
3035	<?php
3036	else :
3037	$this->js_dialog(
3038	$this->shortname,
3039	array(
3040	'width' => 305,
3041	'height' => 665,
3042	)
3043	);
3044	endif;
3045	}
3046	}
3047