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Jetpack – WP Security, Backup, Speed, & Growth / 16.2
Jetpack – WP Security, Backup, Speed, & Growth v16.2
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jetpack / functions.opengraph.php

functions.opengraph.php in Jetpack – WP Security, Backup, Speed, & Growth 16.2, at functions.opengraph.php

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1 <?php // phpcs:ignore WordPress.Files.FileName.NotHyphenatedLowercase
2 /**
3 * Open Graph Tags
4 *
5 * Add Open Graph tags so that Facebook (and any other service that supports them)
6 * can crawl the site better and we provide a better sharing experience.
7 *
8 * @link https://ogp.me/
9 * @link https://developers.facebook.com/docs/opengraph/
10 *
11 * @package automattic/jetpack
12 */
13
14 use Automattic\Block_Scanner;
15 use Automattic\Jetpack\Connection\Manager as Connection_Manager;
16 use Automattic\Jetpack\Current_Plan;
17 use Automattic\Jetpack\Post_Media\Images;
18 use Automattic\Jetpack\Status;
19 use Automattic\Jetpack\Status\Host;
20
21 if ( ! defined( 'ABSPATH' ) ) {
22 exit( 0 );
23 }
24
25 add_action( 'wp_head', 'jetpack_og_tags' );
26
27 /**
28 * Keep Twitter Cards from analyzing the body of a gated post.
29 *
30 * Twitter_Cards::twitter_cards_tags() runs at priority 11 and, when a card type
31 * is already set, emits only the site default image instead of images and
32 * videos parsed out of the body.
33 *
34 * @since 16.2
35 *
36 * @param array $tags Open Graph tags.
37 * @return array
38 */
39 function jetpack_og_gate_twitter_cards( $tags ) {
40 /** This filter is documented in class.jetpack.php */
41 if ( apply_filters( 'jetpack_disable_twitter_cards', false ) ) {
42 return $tags;
43 }
44
45 if ( ! is_singular() ) {
46 return $tags;
47 }
48
49 $post = get_post();
50 if ( ! $post instanceof WP_Post || ! \Automattic\Jetpack\SEO\Content_Gate::is_gated( $post ) ) {
51 return $tags;
52 }
53
54 if ( empty( $tags['twitter:text:title'] ) ) {
55 $tags['twitter:text:title'] = get_the_title( $post );
56 }
57
58 // Twitter_Cards stops once a card type is set, so carry the featured image
59 // across here; it is chosen separately and never parsed out of the body.
60 $card_type = 'summary';
61 if ( empty( $tags['twitter:image'] ) ) {
62 $image = Images::get_image(
63 $post->ID,
64 array(
65 'width' => 144,
66 'height' => 144,
67 'from_slideshow' => false,
68 'from_gallery' => false,
69 'from_attachment' => false,
70 'from_blocks' => false,
71 'from_html' => false,
72 )
73 );
74
75 // Twitter's limits: 4096px maximum, and 300x157 minimum for a large card.
76 if (
77 ! empty( $image['src'] )
78 && isset( $image['src_width'] ) && isset( $image['src_height'] )
79 && (int) $image['src_width'] <= 4096
80 && (int) $image['src_height'] <= 4096
81 ) {
82 if ( (int) $image['src_width'] >= 300 && (int) $image['src_height'] >= 157 ) {
83 $card_type = 'summary_large_image';
84 $tags['twitter:image'] = esc_url( add_query_arg( 'w', 640, $image['src'] ) );
85 } else {
86 $tags['twitter:image'] = esc_url( add_query_arg( 'w', 144, $image['src'] ) );
87 }
88
89 if ( ! empty( $image['alt_text'] ) ) {
90 $alt_length = 420;
91 $tags['twitter:image:alt'] = strlen( $image['alt_text'] ) > $alt_length
92 ? esc_attr( mb_substr( $image['alt_text'], 0, $alt_length ) . '' )
93 : esc_attr( $image['alt_text'] );
94 }
95 }
96 }
97
98 if ( empty( $tags['twitter:card'] ) ) {
99 $tags['twitter:card'] = $card_type;
100 }
101
102 return $tags;
103 }
104 add_filter( 'jetpack_open_graph_tags', 'jetpack_og_gate_twitter_cards', 10 );
105 add_action( 'web_stories_story_head', 'jetpack_og_tags' );
106
107 // Add a Fediverse Open Graph Tag when an author has connected their Mastodon account.
108 add_filter( 'jetpack_open_graph_tags', 'jetpack_add_fediverse_creator_open_graph_tag', 10, 1 );
109 add_filter( 'jetpack_open_graph_output', 'jetpack_filter_fediverse_cards_output', 10, 1 );
110
111 /**
112 * Outputs Open Graph tags generated by Jetpack.
113 */
114 function jetpack_og_tags() {
115 global $post;
116 $data = $post; // so that we don't accidentally explode the global.
117
118 $is_amp_response = ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() );
119
120 // Disable the widont filter on WP.com to avoid stray &nbsps.
121 $disable_widont = remove_filter( 'the_title', 'widont' );
122
123 $og_output = "\n";
124 if ( ! $is_amp_response ) { // Because AMP optimizes the order or the nodes in the head.
125 $og_output .= "<!-- Jetpack Open Graph Tags -->\n";
126 }
127 $tags = array();
128
129 /**
130 * Filter the minimum width of the images used in Jetpack Open Graph Meta Tags.
131 *
132 * @module sharedaddy, publicize
133 *
134 * @since 2.0.0
135 *
136 * @param int 200 Minimum image width used in Jetpack Open Graph Meta Tags.
137 */
138 $image_width = absint( apply_filters( 'jetpack_open_graph_image_width', 200 ) );
139 /**
140 * Filter the minimum height of the images used in Jetpack Open Graph Meta Tags.
141 *
142 * @module sharedaddy, publicize
143 *
144 * @since 2.0.0
145 *
146 * @param int 200 Minimum image height used in Jetpack Open Graph Meta Tags.
147 */
148 $image_height = absint( apply_filters( 'jetpack_open_graph_image_height', 200 ) );
149 $description_length = 197;
150
151 if ( is_home() || is_front_page() ) {
152 $site_type = Jetpack_Options::get_option_and_ensure_autoload( 'open_graph_protocol_site_type', '' );
153 $tags['og:type'] = ! empty( $site_type ) ? $site_type : 'website';
154 $tags['og:title'] = get_bloginfo( 'name' );
155 $tags['og:description'] = get_bloginfo( 'description' );
156
157 $front_page_id = get_option( 'page_for_posts' );
158 if ( 'page' === get_option( 'show_on_front' ) && $front_page_id && is_home() ) {
159 $tags['og:url'] = get_permalink( $front_page_id );
160 } else {
161 $tags['og:url'] = home_url( '/' );
162 }
163
164 // Associate a blog's root path with one or more Facebook accounts.
165 $facebook_admins = Jetpack_Options::get_option_and_ensure_autoload( 'facebook_admins', array() );
166 if ( ! empty( $facebook_admins ) ) {
167 $tags['fb:admins'] = $facebook_admins;
168 }
169 } elseif ( is_author() ) {
170 $tags['og:type'] = 'profile';
171
172 $author = get_queried_object();
173
174 if ( is_a( $author, 'WP_User' ) ) {
175 $tags['og:title'] = $author->display_name;
176 if ( ! empty( $author->user_url ) ) {
177 $tags['og:url'] = $author->user_url;
178 } else {
179 $tags['og:url'] = get_author_posts_url( $author->ID );
180 }
181 $tags['og:description'] = $author->description;
182 $tags['profile:first_name'] = get_the_author_meta( 'first_name', $author->ID );
183 $tags['profile:last_name'] = get_the_author_meta( 'last_name', $author->ID );
184 }
185 } elseif ( is_archive() ) {
186 $tags['og:type'] = 'website';
187 $tags['og:title'] = wp_get_document_title();
188
189 $archive = get_queried_object();
190 if ( $archive instanceof WP_Term ) {
191 $tags['og:url'] = get_term_link( $archive->term_id, $archive->taxonomy );
192 $tags['og:description'] = $archive->description;
193 } elseif ( ! empty( $archive ) && is_post_type_archive() ) {
194 $tags['og:url'] = get_post_type_archive_link( $archive->name );
195 $tags['og:description'] = $archive->description;
196 }
197 } elseif ( is_singular() && is_a( $data, 'WP_Post' ) ) {
198 $tags['og:type'] = 'article';
199 if ( empty( $data->post_title ) ) {
200 $tags['og:title'] = ' ';
201 } else {
202 /** This filter is documented in core/src/wp-includes/post-template.php */
203 $tags['og:title'] = wp_kses( apply_filters( 'the_title', $data->post_title, $data->ID ), array() );
204 }
205
206 $tags['og:url'] = get_permalink( $data->ID );
207 if ( ! post_password_required( $data ) ) {
208 /*
209 * If the post author set an excerpt, use that.
210 * Otherwise, pick the post content that comes before the More tag if there is one.
211 * Do not use the post content if it contains premium content.
212 */
213 if ( ! empty( $data->post_excerpt ) ) {
214 $tags['og:description'] = jetpack_og_get_description( $data->post_excerpt );
215 } else {
216 $content = \Automattic\Jetpack\SEO\Content_Gate::is_gated( $data )
217 ? \Automattic\Jetpack\SEO\Content_Gate::public_teaser( $data )
218 : $data->post_content;
219
220 if ( '' !== $content ) {
221 $excerpt = explode( '<!--more-->', $content )[0];
222 $tags['og:description'] = jetpack_og_get_description( $excerpt );
223 }
224 }
225 }
226
227 $tags['article:published_time'] = gmdate( 'c', strtotime( $data->post_date_gmt ) );
228 $tags['article:modified_time'] = gmdate( 'c', strtotime( $data->post_modified_gmt ) );
229 if ( post_type_supports( get_post_type( $data ), 'author' ) && isset( $data->post_author ) ) {
230 $publicize_facebook_user = get_post_meta( $data->ID, '_publicize_facebook_user', true );
231 if ( ! empty( $publicize_facebook_user ) ) {
232 $tags['article:author'] = esc_url( $publicize_facebook_user );
233 }
234 }
235 } elseif ( is_search() ) {
236 if ( '' !== get_query_var( 's', '' ) ) {
237 $tags['og:title'] = wp_get_document_title();
238 }
239 }
240 /**
241 * Allow plugins to inject additional template-specific Open Graph tags.
242 *
243 * @module sharedaddy, publicize
244 *
245 * @since 3.0.0
246 *
247 * @param array $tags Array of Open Graph Meta tags.
248 * @param array $args Array of image size parameters.
249 */
250 $tags = apply_filters( 'jetpack_open_graph_base_tags', $tags, compact( 'image_width', 'image_height' ) );
251
252 // Re-enable widont if we had disabled it.
253 if ( $disable_widont ) {
254 add_filter( 'the_title', 'widont' );
255 }
256
257 /**
258 * Do not return any Open Graph Meta tags if we don't have any info about a post.
259 *
260 * @module sharedaddy, publicize
261 *
262 * @since 3.0.0
263 *
264 * @param bool true Do not return any Open Graph Meta tags if we don't have any info about a post.
265 */
266 if ( empty( $tags ) && apply_filters( 'jetpack_open_graph_return_if_empty', true ) ) {
267 return;
268 }
269
270 $tags['og:site_name'] = get_bloginfo( 'name' );
271
272 // Get image info and build tags.
273 if ( ! post_password_required() ) {
274 $image_info = jetpack_og_get_image( $image_width, $image_height );
275 $tags['og:image'] = $image_info['src'];
276
277 if ( ! empty( $image_info['width'] ) ) {
278 $tags['og:image:width'] = (int) $image_info['width'];
279 }
280 if ( ! empty( $image_info['height'] ) ) {
281 $tags['og:image:height'] = (int) $image_info['height'];
282 }
283 // If we have an image, add the alt text even if it's empty.
284 if ( ! empty( $image_info['src'] ) && isset( $image_info['alt_text'] ) ) {
285 $tags['og:image:alt'] = esc_attr( $image_info['alt_text'] );
286 }
287 }
288
289 // Facebook whines if you give it an empty title.
290 if ( empty( $tags['og:title'] ) ) {
291 $tags['og:title'] = __( '(no title)', 'jetpack' );
292 }
293
294 // Shorten the description if it's too long.
295 if ( isset( $tags['og:description'] ) ) {
296 $tags['og:description'] = strlen( $tags['og:description'] ) > $description_length ? mb_substr( $tags['og:description'], 0, $description_length ) . '' : $tags['og:description'];
297 }
298
299 // Try to add OG locale tag if the WP->FB data mapping exists.
300 if ( defined( 'JETPACK__GLOTPRESS_LOCALES_PATH' ) && file_exists( JETPACK__GLOTPRESS_LOCALES_PATH ) ) {
301 require_once JETPACK__GLOTPRESS_LOCALES_PATH;
302 $_locale = get_locale();
303
304 // We have to account for w.org vs WP.com locale divergence.
305 if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
306 $gp_locale = GP_Locales::by_field( 'slug', $_locale );
307 } else {
308 $gp_locale = GP_Locales::by_field( 'wp_locale', $_locale );
309 }
310 }
311
312 if ( isset( $gp_locale->facebook_locale ) && ! empty( $gp_locale->facebook_locale ) ) {
313 $tags['og:locale'] = $gp_locale->facebook_locale;
314 }
315
316 /**
317 * Allow the addition of additional Open Graph Meta tags, or modify the existing tags.
318 *
319 * @module sharedaddy, publicize
320 *
321 * @since 2.0.0
322 *
323 * @param array $tags Array of Open Graph Meta tags.
324 * @param array $args Array of image size parameters.
325 */
326 $tags = apply_filters( 'jetpack_open_graph_tags', $tags, compact( 'image_width', 'image_height' ) );
327
328 // secure_urls need to go right after each og:image to work properly so we will abstract them here.
329 $tags['og:image:secure_url'] = ( empty( $tags['og:image:secure_url'] ) ) ? '' : $tags['og:image:secure_url'];
330 $secure = $tags['og:image:secure_url'];
331 unset( $tags['og:image:secure_url'] );
332 $secure_image_num = 0;
333
334 $allowed_empty_tags = array(
335 'og:image:alt',
336 );
337
338 foreach ( (array) $tags as $tag_property => $tag_content ) {
339 // to accommodate multiple images.
340 $tag_content = (array) $tag_content;
341 $tag_content = array_unique( array_filter( $tag_content, 'is_scalar' ) );
342
343 foreach ( $tag_content as $tag_content_single ) {
344 if ( empty( $tag_content_single ) && ! in_array( $tag_property, $allowed_empty_tags, true ) ) {
345 continue; // Only allow certain empty tags.
346 }
347
348 switch ( $tag_property ) {
349 case 'og:url':
350 case 'og:image':
351 case 'og:image:url':
352 case 'og:image:secure_url':
353 case 'og:audio':
354 case 'og:audio:url':
355 case 'og:audio:secure_url':
356 case 'og:video':
357 case 'og:video:url':
358 case 'og:video:secure_url':
359 $og_tag = sprintf( '<meta property="%s" content="%s" />', esc_attr( $tag_property ), esc_url( $tag_content_single ) );
360 break;
361 default:
362 $og_tag = sprintf( '<meta property="%s" content="%s" />', esc_attr( $tag_property ), esc_attr( $tag_content_single ) );
363 }
364 /**
365 * Filter the HTML Output of each Open Graph Meta tag.
366 *
367 * @module sharedaddy, publicize
368 *
369 * @since 2.0.0
370 *
371 * @param string $og_tag HTML HTML Output of each Open Graph Meta tag.
372 */
373 $og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
374 $og_output .= "\n";
375
376 if ( 'og:image' === $tag_property ) {
377 if ( is_array( $secure ) && ! empty( $secure[ $secure_image_num ] ) ) {
378 $og_tag = sprintf( '<meta property="og:image:secure_url" content="%s" />', esc_url( $secure[ $secure_image_num ] ) );
379 /** This filter is documented in functions.opengraph.php */
380 $og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
381 $og_output .= "\n";
382 } elseif ( ! is_array( $secure ) && ! empty( $secure ) ) {
383 $og_tag = sprintf( '<meta property="og:image:secure_url" content="%s" />', esc_url( $secure ) );
384 /** This filter is documented in functions.opengraph.php */
385 $og_output .= apply_filters( 'jetpack_open_graph_output', $og_tag );
386 $og_output .= "\n";
387 }
388 ++$secure_image_num;
389 }
390 }
391 }
392
393 if ( ! $is_amp_response ) { // Because AMP optimizes the order or the nodes in the head.
394 $og_output .= "\n<!-- End Jetpack Open Graph Tags -->";
395 }
396 $og_output .= "\n";
397 // This is trusted output or added by a filter.
398 echo $og_output; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
399 }
400
401 /**
402 * Returns an image used in social shares.
403 *
404 * @since 2.0.0
405 *
406 * @param int $width Minimum width for the image. Default is 200 based on Facebook's requirement.
407 * @param int $height Minimum height for the image. Default is 200 based on Facebook's requirement.
408 * @param null $deprecated Deprecated.
409 *
410 * @return array The source ('src'), 'width', and 'height' of the image.
411 */
412 function jetpack_og_get_image( $width = 200, $height = 200, $deprecated = null ) {
413 if ( ! empty( $deprecated ) ) {
414 _deprecated_argument( __FUNCTION__, 'jetpack-6.6.0' );
415 }
416 $image = array();
417
418 if ( is_singular() && ! is_home() ) {
419 // Grab obvious image if post is an attachment page for an image.
420 if ( is_attachment( get_the_ID() ) && str_starts_with( get_post_mime_type(), 'image' ) ) {
421 $image['src'] = wp_get_attachment_url( get_the_ID() );
422 $image['alt_text'] = Images::get_alt_text( get_the_ID() );
423 }
424
425 // Attempt to find something good for this post using our generalized PostImages code.
426 if ( empty( $image ) ) {
427 $image_args = array(
428 'width' => $width,
429 'height' => $height,
430 );
431 // Every source but the featured image is parsed out of the body.
432 if ( \Automattic\Jetpack\SEO\Content_Gate::is_gated( get_post( get_the_ID() ) ) ) {
433 $image_args += array(
434 'from_slideshow' => false,
435 'from_gallery' => false,
436 'from_attachment' => false,
437 'from_blocks' => false,
438 'from_html' => false,
439 );
440 }
441 $post_image = Images::get_image( get_the_ID(), $image_args );
442 if ( ! empty( $post_image ) && is_array( $post_image ) ) {
443 $image['src'] = $post_image['src'];
444 if ( isset( $post_image['src_width'] ) && isset( $post_image['src_height'] ) ) {
445 $image['width'] = $post_image['src_width'];
446 $image['height'] = $post_image['src_height'];
447 }
448 if ( ! empty( $post_image['alt_text'] ) ) {
449 $image['alt_text'] = $post_image['alt_text'];
450 }
451 }
452 }
453 } elseif ( is_author() ) {
454 $author = get_queried_object();
455 if ( is_a( $author, 'WP_User' ) ) {
456 $image['src'] = get_avatar_url(
457 $author->user_email,
458 array(
459 'size' => $width,
460 )
461 );
462 $image['alt_text'] = $author->display_name;
463 }
464 }
465
466 /*
467 * Generate a fallback social image,
468 * dynamically generated based on the site name,
469 * a representative image of the site,
470 * and a custom template used by our Social Image Generator.
471 */
472 if ( empty( $image ) ) {
473 $site_image = jetpack_og_get_fallback_social_image( $width, $height );
474 if ( ! empty( $site_image ) ) {
475 $image['src'] = $site_image['src'];
476 $image['width'] = $site_image['width'];
477 $image['height'] = $site_image['height'];
478 }
479 }
480
481 // If we didn't get an explicit alt tag from the image, set a default.
482 if ( empty( $image['alt_text'] ) ) {
483 /**
484 * Filter the default Open Graph image alt text, used when the Open Graph image from the post does not have an alt text.
485 *
486 * @since 10.4
487 *
488 * @param string $str Default Open Graph image alt text.
489 */
490 $image['alt_text'] = apply_filters( 'jetpack_open_graph_image_default_alt_text', '' );
491 }
492
493 return $image;
494 }
495
496 /**
497 * Get a fallback social image for the site.
498 *
499 * @since 14.9
500 *
501 * @param int $width The width of the image.
502 * @param int $height The height of the image.
503 *
504 * @return array The source ('src'), 'width', 'height', and source type of the image.
505 */
506 function jetpack_og_get_fallback_social_image( $width, $height ) {
507 // Default template.
508 $template = 'edge';
509
510 // Let's get the site's representative image.
511 $site_image = jetpack_og_get_site_image( $width, $height );
512
513 /**
514 * Define your own site's representative image,
515 * to override any fallback image found by looking through site's logo, site icon, and blavatar.
516 * This will allow you to overwrite the default fallback image generated dynamically.
517 *
518 * @since 15.0
519 *
520 * @param array $site_image Your own site's representative image.
521 * @param array $site_image The site's representative image picked by Jetpack. {
522 * @type string $src The source of the image.
523 * @type int $width The width of the image.
524 * @type int $height The height of the image.
525 * @type string $type The type of the image.
526 * }
527 */
528 $custom_site_image = apply_filters( 'jetpack_og_default_site_image', array(), $site_image );
529 if ( ! empty( $custom_site_image['src'] ) ) {
530 return $custom_site_image;
531 }
532
533 if ( empty( $site_image['src'] ) ) {
534 // When using the default blank image, use a different template in Social Image Generator.
535 $template = 'highway';
536 $site_image['src'] = jetpack_og_get_site_fallback_blank_image();
537 }
538
539 // Return the site image if we are in offline mode instead of attempting to generate a dynamic one.
540 if ( ( new Status() )->is_offline_mode() ) {
541 return $site_image;
542 }
543
544 /*
545 * Only attempt to generate a dynamic fallback image
546 * if we have a healthy connection to WPCOM.
547 * and if the site has the right plan.
548 */
549 if (
550 ( ( new Host() )->is_wpcom_simple()
551 || ( new Connection_Manager() )->is_connected()
552 )
553 && Current_Plan::supports( 'social-image-generator' )
554 ) {
555 /**
556 * Allow filtering the template to use with Social Image Generator.
557 * Available templates: highway, dois, fullscreen, edge.
558 *
559 * @since 14.9
560 *
561 * @param string $template The template to use.
562 */
563 $template = apply_filters( 'jetpack_og_fallback_social_image_template', $template );
564
565 // Let's generate the image.
566 $site_image = jetpack_og_generate_fallback_social_image( $site_image, $template );
567 }
568
569 return $site_image;
570 }
571
572 /**
573 * Get the site's representative image.
574 *
575 * @since 14.9
576 *
577 * @param int $width The width of the image.
578 * @param int $height The height of the image.
579 *
580 * @return array The source ('src'), 'width', 'height', and source type of the image.
581 */
582 function jetpack_og_get_site_image( $width, $height ) {
583 // First fall back, blavatar.
584 if ( function_exists( 'blavatar_domain' ) ) {
585 $blavatar_domain = blavatar_domain( site_url() );
586 if ( blavatar_exists( $blavatar_domain ) ) {
587 return array(
588 'src' => blavatar_url( $blavatar_domain, 'img', $width, false, true ),
589 'width' => $width,
590 'height' => $height,
591 'type' => 'blavatar',
592 );
593 }
594 }
595
596 // Second fall back, Site Logo.
597 if (
598 function_exists( 'jetpack_has_site_logo' )
599 && jetpack_has_site_logo()
600 ) {
601 $image_id = jetpack_get_site_logo( 'id' );
602 $logo = wp_get_attachment_image_src( $image_id, 'full' );
603 if (
604 isset( $logo[0] ) && isset( $logo[1] ) && isset( $logo[2] )
605 && ( _jetpack_og_get_image_validate_size( $logo[1], $logo[2], $width, $height ) )
606 ) {
607 return array(
608 'src' => $logo[0],
609 'width' => $logo[1],
610 'height' => $logo[2],
611 'type' => 'site_logo',
612 );
613 }
614 }
615
616 // Third fall back, Core's site logo.
617 if ( has_custom_logo() ) {
618 $custom_logo_id = get_theme_mod( 'custom_logo' );
619 $sl_details = wp_get_attachment_image_src(
620 $custom_logo_id,
621 'full'
622 );
623 if (
624 isset( $sl_details[0] ) && isset( $sl_details[1] ) && isset( $sl_details[2] )
625 && ( _jetpack_og_get_image_validate_size( $sl_details[1], $sl_details[2], $width, $height ) )
626 ) {
627 return array(
628 'src' => $sl_details[0],
629 'width' => $sl_details[1],
630 'height' => $sl_details[2],
631 'alt_text' => Images::get_alt_text( $custom_logo_id ),
632 );
633 }
634 }
635
636 // Fourth fall back, Core Site Icon, if valid in size.
637 if ( has_site_icon() ) {
638 $image_id = get_option( 'site_icon' );
639 $icon = wp_get_attachment_image_src( $image_id, 'full' );
640 if (
641 isset( $icon[0] ) && isset( $icon[1] ) && isset( $icon[2] )
642 && ( _jetpack_og_get_image_validate_size( $icon[1], $icon[2], $width, $height ) )
643 ) {
644 return array(
645 'src' => $icon[0],
646 'width' => $icon[1],
647 'height' => $icon[2],
648 'type' => 'site_icon',
649 );
650 }
651 }
652
653 return array(
654 'src' => '',
655 'width' => $width,
656 'height' => $height,
657 'type' => 'blank',
658 );
659 }
660
661 /**
662 * Get the site's fallback image.
663 *
664 * @since 14.9
665 *
666 * @return string
667 */
668 function jetpack_og_get_site_fallback_blank_image() {
669 /**
670 * Filter the default Open Graph Image tag, used when no Image can be found in a post.
671 *
672 * @since 3.0.0
673 *
674 * @param string $str Default Image URL.
675 */
676 return apply_filters( 'jetpack_open_graph_image_default', 'https://s0.wp.com/i/blank.jpg' );
677 }
678
679 /**
680 * Get available templates for Social Image Generator.
681 *
682 * @since 14.9
683 *
684 * @return array The available templates.
685 */
686 function jetpack_og_get_available_templates() {
687 if ( ! class_exists( '\Automattic\Jetpack\Publicize\Social_Image_Generator\Templates' ) ) {
688 return array();
689 }
690
691 return \Automattic\Jetpack\Publicize\Social_Image_Generator\Templates::TEMPLATES;
692 }
693
694 /**
695 * Get a social image token from Social Image Generator.
696 *
697 * @since 14.9
698 *
699 * @param string $site_title The site title.
700 * @param string $image_url The image URL.
701 * @param string $template The template to use.
702 *
703 * @return string|WP_Error The social image token, or a WP_Error if the token could not be generated.
704 */
705 function jetpack_og_get_social_image_token( $site_title, $image_url, $template ) {
706 // Let's check if we have a cached token.
707 $cache_key = wp_hash( $site_title . $image_url . $template );
708 $transient_name = 'jetpack_og_social_image_token_' . $cache_key;
709 $cached_token = get_transient( $transient_name );
710
711 if ( ! empty( $cached_token ) ) {
712 return $cached_token;
713 }
714
715 /**
716 * Filter the social image token for testing purposes.
717 *
718 * @since 14.9
719 *
720 * @param string|WP_Error|null $token The token to return, or null to use default behavior.
721 */
722 $token = apply_filters( 'jetpack_og_get_social_image_token', null );
723 if ( null !== $token ) {
724 return $token;
725 }
726
727 if ( ! function_exists( '\Automattic\Jetpack\Publicize\Social_Image_Generator\fetch_token' ) ) {
728 return new WP_Error( 'jetpack_og_get_social_image_token_error', __( 'Social Image Generator is not available.', 'jetpack' ) );
729 }
730
731 $token = \Automattic\Jetpack\Publicize\Social_Image_Generator\fetch_token( $site_title, $image_url, $template );
732
733 /*
734 * We want to cache 2 types of responses:
735 * - Successful responses with a token.
736 * - WP_Error responses that denote a WordPress.com connection issue.
737 */
738 if (
739 ! is_wp_error( $token )
740 || (
741 is_wp_error( $token )
742 && 'invalid_user_permission_publicize' === $token->get_error_code()
743 )
744 ) {
745 set_transient( $transient_name, $token, DAY_IN_SECONDS );
746 }
747
748 return $token;
749 }
750
751 /**
752 * Generate and create a fallback social image.
753 *
754 * @since 14.9
755 *
756 * @param array $representative_image The representative image of the site.
757 * @param string $template The template to use.
758 *
759 * @return array The source ('src'), 'width', and 'height' of the image.
760 */
761 function jetpack_og_generate_fallback_social_image( $representative_image, $template ) {
762 $site_title = get_bloginfo( 'name' );
763 $fallback_image = array(
764 'src' => $representative_image['src'],
765 'width' => $representative_image['width'],
766 'height' => $representative_image['height'],
767 );
768
769 // Ensure that we use a valid template.
770 if (
771 ! in_array(
772 $template,
773 jetpack_og_get_available_templates(),
774 true
775 )
776 ) {
777 $template = 'edge';
778 }
779
780 // Let's generate the token matching the image..
781 $token = jetpack_og_get_social_image_token( $site_title, $representative_image['src'], $template );
782
783 if ( is_wp_error( $token ) ) {
784 return $fallback_image;
785 }
786
787 // Build the image URL and return it.
788 return array(
789 'src' => sprintf(
790 'https://s0.wp.com/_si/?t=%s',
791 $token
792 ),
793 'width' => 1200,
794 'height' => 630,
795 );
796 }
797
798 /**
799 * Validate the width and height against required width and height
800 *
801 * @param int $width Width of the image.
802 * @param int $height Height of the image.
803 * @param int $req_width Required width to pass validation.
804 * @param int $req_height Required height to pass validation.
805 *
806 * @return bool - True if the image passed the required size validation
807 */
808 function _jetpack_og_get_image_validate_size( $width, $height, $req_width, $req_height ) {
809 if ( ! $width || ! $height ) {
810 return false;
811 }
812
813 $valid_width = ( $width >= $req_width );
814 $valid_height = ( $height >= $req_height );
815 $is_image_acceptable = $valid_width && $valid_height;
816
817 return $is_image_acceptable;
818 }
819
820 /**
821 * Gets a gravatar URL of the specified size.
822 *
823 * @param string $email E-mail address to get gravatar for.
824 * @param int $width Size of returned gravatar.
825 * @return array|bool|mixed|string
826 */
827 function jetpack_og_get_image_gravatar( $email, $width ) {
828 return get_avatar_url(
829 $email,
830 array(
831 'size' => $width,
832 )
833 );
834 }
835
836 /**
837 * Clean up text meant to be used as Description Open Graph tag.
838 *
839 * There should be:
840 * - no links
841 * - no shortcodes
842 * - no html tags or their contents
843 * - no content within wp:query blocks
844 * - not too many words.
845 *
846 * @param string $description Text coming from WordPress (autogenerated or manually generated by author).
847 * @param WP_Post|null $data Information about our post.
848 *
849 * @return string $description Cleaned up description string.
850 */
851 function jetpack_og_get_description( $description = '', $data = null ) {
852 // Remove content within wp:query blocks.
853 $description = jetpack_og_remove_query_blocks( $description );
854
855 // Remove tags such as <style or <script.
856 $description = wp_strip_all_tags( $description );
857
858 /*
859 * Clean up any plain text entities left into formatted entities.
860 * Intentionally not using a filter to prevent pollution.
861 * @see https://github.com/Automattic/jetpack/pull/2899#issuecomment-151957382
862 */
863 $description = wp_kses(
864 trim(
865 convert_chars(
866 wptexturize( $description )
867 )
868 ),
869 array()
870 );
871
872 // Remove shortcodes.
873 $description = strip_shortcodes( $description );
874
875 // Remove links.
876 $description = preg_replace(
877 '@https?://[\S]+@',
878 '',
879 $description
880 );
881
882 /*
883 * Limit things to a small text blurb.
884 * There isn't a hard limit set by Facebook, so let's rely on WP's own limit.
885 * (55 words or the localized equivalent).
886 * This limit can be customized with the wp_trim_words filter.
887 */
888 $description = wp_trim_words( $description );
889
890 // Let's set a default if we have no text by now.
891 if ( empty( $description ) ) {
892 /**
893 * Filter the fallback `og:description` used when no excerpt information is provided.
894 *
895 * @module sharedaddy, publicize
896 *
897 * @since 3.9.0
898 *
899 * @param string $var Fallback og:description. Default is translated `Visit the post for more'.
900 * @param object $data Post object for the current post.
901 */
902 $description = apply_filters(
903 'jetpack_open_graph_fallback_description',
904 __( 'Visit the post for more.', 'jetpack' ),
905 $data
906 );
907 }
908
909 return $description;
910 }
911
912 /**
913 * Remove content within wp:query blocks from the description.
914 *
915 * @since 14.9
916 *
917 * @param string $description The description text that may contain block markup.
918 * @return string The description with wp:query blocks removed.
919 */
920 function jetpack_og_remove_query_blocks( $description ) {
921 // Handle non-string input
922 if ( ! is_string( $description ) ) {
923 return '';
924 }
925
926 $output = '';
927 $offset = 0;
928 $depth = 0;
929 $in_query_block = false;
930
931 $scanner = Block_Scanner::create( $description );
932 if ( ! $scanner ) {
933 return $description;
934 }
935
936 while ( $scanner->next_delimiter() ) {
937 $span = $scanner->get_span();
938 $match_at = $span->start;
939 $length = $span->length;
940
941 // Check if this is a query block.
942 if ( $scanner->is_block_type( 'query' ) ) {
943 switch ( $scanner->get_delimiter_type() ) {
944 case Block_Scanner::OPENER:
945 if ( ! $in_query_block ) {
946 // Copy content before the query block.
947 $output .= substr( $description, $offset, $match_at - $offset );
948 $in_query_block = true;
949 }
950 ++$depth;
951 break;
952
953 case Block_Scanner::CLOSER:
954 --$depth;
955 if ( $in_query_block && $depth === 0 ) {
956 // We've exited the query block, continue from after it.
957 $in_query_block = false;
958 $offset = $match_at + $length;
959
960 // Remove extra newline if present
961 if (
962 str_starts_with( substr( $description, $offset ), "\n" )
963 && str_ends_with( $output, "\n" )
964 ) {
965 ++$offset;
966 }
967 }
968 break;
969
970 case Block_Scanner::VOID:
971 // Void query blocks should be removed entirely.
972 if ( ! $in_query_block ) {
973 $output .= substr( $description, $offset, $match_at - $offset );
974 $offset = $match_at + $length;
975 // Remove extra newline if present
976 if (
977 str_starts_with( substr( $description, $offset ), "\n" )
978 && str_ends_with( $output, "\n" )
979 ) {
980 ++$offset;
981 }
982 }
983 break;
984 }
985 } elseif ( ! $in_query_block ) {
986 // Not a query block, copy content including the delimiter if we're not inside a query block.
987 $output .= substr( $description, $offset, $match_at - $offset + $length );
988 $offset = $match_at + $length;
989 }
990 }
991
992 // Add any remaining content after the last delimiter.
993 if ( ! $in_query_block ) {
994 $output .= substr( $description, $offset );
995 }
996
997 return $output;
998 }
999
1000 /**
1001 * Display a Fediverse actor Open Graph tag when the post author has a Mastodon connection.
1002 *
1003 * @see https://blog.joinmastodon.org/2024/07/highlighting-journalism-on-mastodon/
1004 *
1005 * @since 13.8
1006 *
1007 * @param array $tags Current tags.
1008 *
1009 * @return array
1010 */
1011 function jetpack_add_fediverse_creator_open_graph_tag( $tags ) {
1012 /*
1013 * Let's not do this on WordPress.com Simple for now,
1014 * because of its performance impact.
1015 * See p1723574138779019/1723572983.803009-slack-C01U2KGS2PQ
1016 */
1017 if ( ( new Host() )->is_wpcom_simple() ) {
1018 return $tags;
1019 }
1020
1021 // Let's not add any tags when the ActivityPub plugin already adds its own.
1022 $is_activitypub_opengraph_integration_active = get_option( 'activitypub_use_opengraph' );
1023 if ( $is_activitypub_opengraph_integration_active ) {
1024 return $tags;
1025 }
1026
1027 // We pull the Mastodon connection data from Publicize.
1028 if ( ! function_exists( 'publicize_init' ) ) {
1029 return $tags;
1030 }
1031 $publicize = publicize_init();
1032
1033 global $post;
1034 if (
1035 ! is_singular()
1036 || ! $post instanceof WP_Post
1037 || ! isset( $post->ID )
1038 || empty( $post->post_author )
1039 ) {
1040 return $tags;
1041 }
1042
1043 $post_mastodon_connections = array();
1044
1045 // Loop through active connections.
1046 foreach ( (array) $publicize->get_services( 'connected' ) as $service_name => $connections ) {
1047 if ( 'mastodon' !== $service_name ) {
1048 continue;
1049 }
1050
1051 // services can have multiple connections. Store them all in our array.
1052 foreach ( $connections as $connection ) {
1053 $connection_id = $publicize->get_connection_id( $connection );
1054 $connection_meta = $publicize->get_connection_meta( $connection );
1055
1056 $connection_data = $connection_meta['connection_data'] ?? array();
1057 $mastodon_handle = $connection_meta['external_display'] ?? '';
1058 $connection_user_id = $connection_data['user_id'] ?? 0;
1059
1060 if ( empty( $mastodon_handle ) ) {
1061 continue;
1062 }
1063
1064 // Did we skip this connection for this post?
1065 if ( get_post_meta( $post->ID, $publicize->POST_SKIP_PUBLICIZE . $connection_id, true ) ) { // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
1066 continue;
1067 }
1068
1069 $post_mastodon_connections[] = array(
1070 'user_id' => (int) $connection_user_id,
1071 'connection_id' => (int) $connection_id,
1072 'handle' => $mastodon_handle,
1073 'global' => 0 === (int) $connection_user_id,
1074 );
1075 }
1076 }
1077
1078 // If we have no Mastodon connections, skip.
1079 if ( empty( $post_mastodon_connections ) ) {
1080 return $tags;
1081 }
1082
1083 /*
1084 * Select a single Mastodon connection to use.
1085 * It should be either the first connection belonging to the post author,
1086 * or the first global connection.
1087 */
1088 foreach ( $post_mastodon_connections as $mastodon_connection ) {
1089 if ( (int) $post->post_author === $mastodon_connection['user_id'] ) {
1090 $tags['fediverse:creator'] = esc_attr( $mastodon_connection['handle'] );
1091 break;
1092 }
1093
1094 if ( $mastodon_connection['global'] ) {
1095 $tags['fediverse:creator'] = esc_attr( $mastodon_connection['handle'] );
1096 break;
1097 }
1098 }
1099
1100 return $tags;
1101 }
1102
1103 /**
1104 * Update the markup for the Open Graph tag to match the expected output for Mastodon
1105 * (name instead of property).
1106 *
1107 * @since 13.8
1108 *
1109 * @param string $og_tag A single OG tag.
1110 *
1111 * @return string Result of the OG tag.
1112 */
1113 function jetpack_filter_fediverse_cards_output( $og_tag ) {
1114 return ( str_contains( $og_tag, 'fediverse:' ) ) ? preg_replace( '/property="([^"]+)"/', 'name="\1"', $og_tag ) : $og_tag;
1115 }
1116