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ActivityPub / 2.6.0
ActivityPub v2.6.0
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← All changes | includes/transformer/class-post.php +558 -922 9.2.0 → 2.6.0 View file →
@@ -1,32 +1,21 @@
1 1 <?php
2 -/**
3 - * WordPress Post Transformer Class file.
4 - *
5 - * @package Activitypub
6 - */
7 -
8 2 namespace Activitypub\Transformer;
9 3
10 -use Activitypub\Activity\Base_Object;
11 -use Activitypub\Collection\Actors;
12 -use Activitypub\Collection\Interactions;
13 -use Activitypub\Collection\Replies;
4 +use WP_Post;
5 +use Activitypub\Shortcodes;
14 6 use Activitypub\Model\Blog;
15 -use Activitypub\Shortcodes;
7 +use Activitypub\Transformer\Base;
8 +use Activitypub\Collection\Users;
16 9
17 10 use function Activitypub\esc_hashtag;
18 -use function Activitypub\generate_post_summary;
19 -use function Activitypub\get_content_visibility;
20 -use function Activitypub\get_content_warning;
11 +use function Activitypub\is_single_user;
21 12 use function Activitypub\get_enclosures;
22 13 use function Activitypub\get_rest_url_by_path;
23 -use function Activitypub\is_post_publicly_queryable;
24 -use function Activitypub\is_single_user;
25 14 use function Activitypub\site_supports_blocks;
26 15
27 16 /**
28 - * WordPress Post Transformer.
17 + * WordPress Post Transformer
29 18 *
30 19 * The Post Transformer is responsible for transforming a WP_Post object into different other
31 20 * Object-Types.
32 21 *
@@ -35,208 +24,71 @@
35 24 * - Activitypub\Activity\Base_Object
36 25 */
37 26 class Post extends Base {
38 27 /**
39 - * The User as Actor Object.
28 + * Returns the ID of the WordPress Post.
40 29 *
41 - * @var \Activitypub\Activity\Actor
30 + * @return int The ID of the WordPress Post
42 31 */
43 - private $actor_object = null;
32 + public function get_wp_user_id() {
33 + return $this->wp_object->post_author;
34 + }
44 35
45 36 /**
46 - * The content.
37 + * Change the User-ID of the WordPress Post.
47 38 *
48 - * @var string|false False indicates not yet computed.
39 + * @return int The User-ID of the WordPress Post
49 40 */
50 - private $content = false;
41 + public function change_wp_user_id( $user_id ) {
42 + $this->wp_object->post_author = $user_id;
51 43
52 - /**
53 - * The summary.
54 - *
55 - * @var string|null|false False indicates not yet computed.
56 - */
57 - private $summary = false;
44 + return $this;
45 + }
58 46
59 47 /**
60 - * The tags.
48 + * Transforms the WP_Post object to an ActivityPub Object
61 49 *
62 - * @var array|false False indicates not yet computed.
63 - */
64 - private $tags = false;
65 -
66 - /**
67 - * The attachment.
50 + * @see \Activitypub\Activity\Base_Object
68 51 *
69 - * @var array|false False indicates not yet computed.
70 - */
71 - private $attachment = false;
72 -
73 - /**
74 - * The mentions.
75 - *
76 - * @var array|false False indicates not yet computed.
77 - */
78 - private $mentions = false;
79 -
80 - /**
81 - * The in_reply_to.
82 - *
83 - * @var string|array|null|false False indicates not yet computed.
84 - */
85 - private $in_reply_to = false;
86 -
87 - /**
88 - * Transforms the WP_Post object to an ActivityPub Object
89 - *
90 52 * @return \Activitypub\Activity\Base_Object The ActivityPub Object
91 53 */
92 54 public function to_object() {
93 - /*
94 - * A redacted (password-protected or non-public) post is, from the
95 - * Fediverse's perspective, gone — the soft-delete path that reaches here
96 - * emits a Delete. Represent it as a Tombstone: content-free by type, so
97 - * no body-derived field (content, summary, tags, @-mentions, location,
98 - * attachments…) can ever leak, even one added to the transformer later.
99 - *
100 - * Address the teardown to the public collection. A post only reaches the
101 - * soft-delete path after being federated, and only public / quiet-public
102 - * posts federate (private and local ones never do), so the original
103 - * audience was always public — broadcasting the Delete tears the copy
104 - * down everywhere it may exist. Private/direct activities are deleted via
105 - * their own outbox path and keep their original (non-public) audience, so
106 - * they are not affected by this.
107 - */
108 - if ( $this->is_redacted() ) {
109 - $tombstone = $this->to_tombstone();
110 - $tombstone->set_to( array( 'https://www.w3.org/ns/activitystreams#Public' ) );
111 -
112 - return $tombstone;
113 - }
114 -
115 - $post = $this->item;
55 + $post = $this->wp_object;
116 56 $object = parent::to_object();
117 57
118 - $content_warning = get_content_warning( $post );
119 - if ( ! empty( $content_warning ) ) {
120 - $object->set_sensitive( true );
121 - $object->set_summary( $content_warning );
122 - $object->set_summary_map( null );
123 - $object->set_dcterms( array( 'subject' => $content_warning ) );
124 - }
58 + $published = \strtotime( $post->post_date_gmt );
125 59
126 - return $object;
127 - }
60 + $object->set_published( \gmdate( 'Y-m-d\TH:i:s\Z', $published ) );
128 61
129 - /**
130 - * Returns a Tombstone object for the post.
131 - *
132 - * @return Base_Object The Tombstone object.
133 - */
134 - public function to_tombstone() {
135 - $object = new Base_Object();
136 - $object->set_type( 'Tombstone' );
137 - $object->set_id( $this->get_id() );
138 - // Preserve the permalink so the tombstone registry can resolve a request
139 - // to it, even on sites whose ActivityPub ID is the post-ID URL (?p=123).
140 - $object->set_url( $this->get_url() );
141 - $object->set_former_type( $this->get_type() );
142 - $object->set_published( $this->get_published() );
143 - $object->set_updated( $this->get_updated() );
62 + $updated = \strtotime( $post->post_modified_gmt );
144 63
145 - $deleted_at = \get_post_meta( $this->item->ID, 'activitypub_deleted_at', true );
146 - if ( $deleted_at ) {
147 - $object->set_deleted( \gmdate( ACTIVITYPUB_DATE_TIME_RFC3339, $deleted_at ) );
64 + if ( $updated > $published ) {
65 + $object->set_updated( \gmdate( 'Y-m-d\TH:i:s\Z', $updated ) );
148 66 }
149 67
150 - return $object;
151 - }
68 + $object->set_content_map(
69 + array(
70 + $this->get_locale() => $this->get_content(),
71 + )
72 + );
73 + $path = sprintf( 'actors/%d/followers', intval( $post->post_author ) );
152 74
153 - /**
154 - * Get the content visibility.
155 - *
156 - * @return string The content visibility.
157 - */
158 - public function get_content_visibility() {
159 - if ( ! $this->content_visibility ) {
160 - return get_content_visibility( $this->item );
161 - }
162 -
163 - return $this->content_visibility;
164 - }
165 -
166 - /**
167 - * Get the Interaction Policy.
168 - *
169 - * @see https://docs.gotosocial.org/en/latest/federation/interaction_policy/
170 - *
171 - * @return array The interaction policy.
172 - */
173 - public function get_interaction_policy() {
174 - return array(
175 - 'canAnnounce' => $this->get_public_interaction_policy(),
176 - 'canLike' => $this->get_public_interaction_policy(),
177 - 'canQuote' => $this->get_quote_policy(),
178 - 'canReply' => $this->get_public_interaction_policy(),
75 + $object->set_to(
76 + array(
77 + 'https://www.w3.org/ns/activitystreams#Public',
78 + get_rest_url_by_path( $path ),
79 + )
179 80 );
180 - }
181 81
182 - /**
183 - * Returns the User-Object of the Author of the Post.
184 - *
185 - * If `single_user` mode is enabled, the Blog-User is returned.
186 - *
187 - * @return \Activitypub\Activity\Actor The User-Object.
188 - */
189 - public function get_actor_object() {
190 - if ( $this->actor_object ) {
191 - return $this->actor_object;
192 - }
193 -
194 - $blog_user = new Blog();
195 - $this->actor_object = $blog_user;
196 -
197 - if ( is_single_user() ) {
198 - return $blog_user;
199 - }
200 -
201 - $user = Actors::get_by_id( $this->item->post_author );
202 -
203 - if ( $user && ! \is_wp_error( $user ) ) {
204 - $this->actor_object = $user;
205 - return $user;
206 - }
207 -
208 - return $blog_user;
82 + return $object;
209 83 }
210 84
211 85 /**
212 86 * Returns the ID of the Post.
213 87 *
214 - * Posts past `activitypub_last_post_with_permalink_as_id` use the post-ID URL
215 - * as their canonical ActivityPub ID — stable across slug changes. Posts at
216 - * or below the threshold are *legacy* and use their permalink as the ID,
217 - * which means a slug change effectively renames the federated object.
218 - *
219 - * Known limitation: a legacy post whose slug changes in the same save as
220 - * a soft-delete transition (e.g. publish → draft + new post_name) will
221 - * emit a Delete targeting the new permalink, while remote servers cached
222 - * the original. The trash case mitigates this via the `wp_trash_post`
223 - * hook caching the pre-transition URL in `_activitypub_canonical_url`,
224 - * but draft / pending / private / password-applied transitions do not.
225 - * If you maintain a site that pre-dates the ID migration, avoid editing
226 - * the slug in the same save as the visibility change.
227 - *
228 88 * @return string The Posts ID.
229 89 */
230 90 public function get_id() {
231 - $last_legacy_id = (int) \get_option( 'activitypub_last_post_with_permalink_as_id', 0 );
232 - $post_id = (int) $this->item->ID;
233 -
234 - if ( $post_id > $last_legacy_id ) {
235 - // Generate URI based on post ID.
236 - return \add_query_arg( 'p', $post_id, \home_url( '/' ) );
237 - }
238 -
239 91 return $this->get_url();
240 92 }
241 93
242 94 /**
@@ -244,28 +96,20 @@
244 96 *
245 97 * @return string The Posts URL.
246 98 */
247 99 public function get_url() {
248 - $post = $this->item;
100 + $post = $this->wp_object;
249 101
250 - switch ( \get_post_status( $post ) ) {
251 - case 'trash':
252 - $permalink = \get_post_meta( $post->ID, '_activitypub_canonical_url', true );
253 - break;
254 - case 'draft':
255 - // Get_sample_permalink is in wp-admin, not always loaded.
256 - if ( ! \function_exists( '\get_sample_permalink' ) ) {
257 - require_once ABSPATH . 'wp-admin/includes/post.php';
258 - }
259 - $sample = \get_sample_permalink( $post->ID );
260 - $permalink = \str_replace( array( '%pagename%', '%postname%' ), $sample[1], $sample[0] );
261 - break;
262 - default:
263 - $permalink = \get_permalink( $post );
264 - break;
102 + if ( 'trash' === get_post_status( $post ) ) {
103 + $permalink = \get_post_meta( $post->ID, 'activitypub_canonical_url', true );
104 + } elseif ( 'draft' === get_post_status( $post ) && get_sample_permalink( $post->ID ) ) {
105 + $sample = get_sample_permalink( $post->ID );
106 + $permalink = str_replace( array( '%pagename%', '%postname%' ), $sample[1], $sample[0] );
107 + } else {
108 + $permalink = \get_permalink( $post );
265 109 }
266 110
267 - return \esc_url_raw( $permalink );
111 + return \esc_url( $permalink );
268 112 }
269 113
270 114 /**
271 115 * Returns the User-URL of the Author of the Post.
@@ -274,583 +118,220 @@
274 118 *
275 119 * @return string The User-URL.
276 120 */
277 121 protected function get_attributed_to() {
278 - return $this->get_actor_object()->get_id();
279 - }
122 + $blog_user = new Blog();
280 123
281 - /**
282 - * Returns the featured image as `Image`.
283 - *
284 - * @return array|null The Image or null if no image is available.
285 - */
286 - protected function get_image() {
287 - $post_id = $this->item->ID;
288 -
289 - // List post thumbnail first if this post has one.
290 - if (
291 - ! \function_exists( 'has_post_thumbnail' ) ||
292 - ! \has_post_thumbnail( $post_id )
293 - ) {
294 - return null;
124 + if ( is_single_user() ) {
125 + return $blog_user->get_url();
295 126 }
296 127
297 - $id = \get_post_thumbnail_id( $post_id );
298 - $image_size = 'large';
128 + $user = Users::get_by_id( $this->wp_object->post_author );
299 129
300 - /**
301 - * Filter the image URL returned for each post.
302 - *
303 - * @param array|false $thumbnail The image URL, or false if no image is available.
304 - * @param int $id The attachment ID.
305 - * @param string $image_size The image size to retrieve. Set to 'large' by default.
306 - */
307 - $thumbnail = \apply_filters(
308 - 'activitypub_get_image',
309 - $this->get_attachment_image_src( $id, $image_size ),
310 - $id,
311 - $image_size
312 - );
313 -
314 - if ( ! $thumbnail ) {
315 - return null;
130 + if ( $user && ! is_wp_error( $user ) ) {
131 + return $user->get_url();
316 132 }
317 133
318 - $mime_type = \get_post_mime_type( $id );
319 -
320 - $image = array(
321 - 'type' => 'Image',
322 - 'url' => \esc_url_raw( $thumbnail[0] ),
323 - 'mediaType' => \esc_attr( $mime_type ),
324 - );
325 -
326 - $alt = \get_post_meta( $id, '_wp_attachment_image_alt', true );
327 - if ( $alt ) {
328 - $image['name'] = \html_entity_decode( \wp_strip_all_tags( $alt ), ENT_QUOTES, 'UTF-8' );
329 - }
330 -
331 - return $image;
134 + return $blog_user->get_url();
332 135 }
333 136
334 137 /**
335 - * Returns an Icon, based on the Featured Image with a fallback to the site-icon.
336 - *
337 - * @return array|null The Icon or null if no icon is available.
338 - */
339 - protected function get_icon() {
340 - $post_id = $this->item->ID;
341 -
342 - // List post thumbnail first if this post has one.
343 - if ( \has_post_thumbnail( $post_id ) ) {
344 - $id = \get_post_thumbnail_id( $post_id );
345 - } else {
346 - // Try site_logo, falling back to site_icon, first.
347 - $id = \get_option( 'site_icon' );
348 - }
349 -
350 - if ( ! $id ) {
351 - return null;
352 - }
353 -
354 - $image_size = 'thumbnail';
355 -
356 - /**
357 - * Filter the image URL returned for each post.
358 - *
359 - * @param array|false $thumbnail The image URL, or false if no image is available.
360 - * @param int $id The attachment ID.
361 - * @param string $image_size The image size to retrieve. Set to 'large' by default.
362 - */
363 - $thumbnail = \apply_filters(
364 - 'activitypub_get_image',
365 - $this->get_attachment_image_src( $id, $image_size ),
366 - $id,
367 - $image_size
368 - );
369 -
370 - if ( ! $thumbnail ) {
371 - return null;
372 - }
373 -
374 - $mime_type = \get_post_mime_type( $id );
375 -
376 - $image = array(
377 - 'type' => 'Image',
378 - 'url' => \esc_url_raw( $thumbnail[0] ),
379 - 'mediaType' => \esc_attr( $mime_type ),
380 - );
381 -
382 - $alt = \get_post_meta( $id, '_wp_attachment_image_alt', true );
383 - if ( $alt ) {
384 - $image['name'] = \html_entity_decode( \wp_strip_all_tags( $alt ), ENT_QUOTES, 'UTF-8' );
385 - }
386 -
387 - return $image;
388 - }
389 -
390 - /**
391 138 * Generates all Media Attachments for a Post.
392 139 *
393 140 * @return array The Attachments.
394 141 */
395 142 protected function get_attachment() {
396 - if ( false !== $this->attachment ) {
397 - return $this->attachment;
143 + // Remove attachments from drafts.
144 + if ( 'draft' === \get_post_status( $this->wp_object ) ) {
145 + return array();
398 146 }
399 147
400 - $max_media = \get_post_meta( $this->item->ID, 'activitypub_max_image_attachments', true );
148 + // Once upon a time we only supported images, but we now support audio/video as well.
149 + // We maintain the image-centric naming for backwards compatibility.
150 + $max_media = \intval(
151 + \apply_filters(
152 + 'activitypub_max_image_attachments',
153 + \get_option( 'activitypub_max_image_attachments', ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS )
154 + )
155 + );
401 156
402 - if ( ! \is_numeric( $max_media ) ) {
403 - $max_media = \get_option( 'activitypub_max_image_attachments', ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS );
404 - }
405 -
406 - /**
407 - * Filters the maximum number of media attachments allowed in a post.
408 - *
409 - * Despite the name suggesting only images, this filter controls the maximum number
410 - * of all media attachments (images, audio, and video) that can be included in an
411 - * ActivityPub post. The name is maintained for backwards compatibility.
412 - *
413 - * @param int $max_media Maximum number of media attachments. Default ACTIVITYPUB_MAX_IMAGE_ATTACHMENTS.
414 - */
415 - $max_media = (int) \apply_filters( 'activitypub_max_image_attachments', $max_media );
416 -
417 - if ( 0 === $max_media ) {
418 - $this->attachment = array();
419 -
420 - return $this->attachment;
421 - }
422 -
423 157 $media = array(
424 - 'image' => array(),
425 158 'audio' => array(),
426 159 'video' => array(),
160 + 'image' => array(),
427 161 );
428 - $id = $this->item->ID;
162 + $id = $this->wp_object->ID;
429 163
430 - // List post thumbnail first if this post has one.
431 - if ( \has_post_thumbnail( $id ) ) {
164 + // list post thumbnail first if this post has one
165 + if ( \function_exists( 'has_post_thumbnail' ) && \has_post_thumbnail( $id ) ) {
432 166 $media['image'][] = array( 'id' => \get_post_thumbnail_id( $id ) );
433 167 }
434 168
435 169 $media = $this->get_enclosures( $media );
436 170
437 - if ( site_supports_blocks() && \has_blocks( $this->item->post_content ) ) {
171 + if ( site_supports_blocks() && \has_blocks( $this->wp_object->post_content ) ) {
438 172 $media = $this->get_block_attachments( $media, $max_media );
439 173 } else {
440 - $media = $this->parse_html_images( $media, $max_media, $this->item->post_content );
174 + $media = $this->get_classic_editor_images( $media, $max_media );
441 175 }
442 176
443 - $media = $this->filter_media_by_object_type( $media, \get_post_format( $this->item ), $this->item );
177 + $media = self::filter_media_by_object_type( $media, \get_post_format( $this->wp_object ), $this->wp_object );
178 + $unique_ids = \array_unique( \array_column( $media, 'id' ) );
179 + $media = \array_intersect_key( $media, $unique_ids );
180 + $media = \array_slice( $media, 0, $max_media );
444 181
445 - /**
446 - * Filter the attachment IDs for a post.
447 - *
448 - * @param array $media The media array grouped by type.
449 - * @param \WP_Post $item The post object.
450 - *
451 - * @return array The filtered attachment IDs.
452 - */
453 - $media = \apply_filters( 'activitypub_attachment_ids', $media, $this->item );
454 -
455 - // Deduplicate and limit after filter to ensure plugins adding attachments don't cause duplicates.
456 - $media = $this->filter_unique_attachments( $media );
457 - $media = \array_slice( $media, 0, $max_media );
458 -
459 - $attachments = \array_filter( \array_map( array( $this, 'transform_attachment' ), $media ) );
460 -
461 - /**
462 - * Filter the attachments for a post.
463 - *
464 - * @param array $attachments The attachments.
465 - * @param \WP_Post $item The post object.
466 - *
467 - * @return array The filtered attachments.
468 - */
469 - $this->attachment = \apply_filters( 'activitypub_attachments', $attachments, $this->item );
470 -
471 - return $this->attachment;
182 + return \array_filter( \array_map( array( self::class, 'wp_attachment_to_activity_attachment' ), $media ) );
472 183 }
473 184
474 185 /**
475 - * Returns the ActivityStreams 2.0 Object-Type for a Post based on the
476 - * settings and the Post-Type.
186 + * Get media attachments from blocks. They will be formatted as ActivityPub attachments, not as WP attachments.
477 187 *
478 - * @see https://www.w3.org/TR/activitystreams-vocabulary/#activity-types
188 + * @param array $media The media array grouped by type.
189 + * @param int $max_media The maximum number of attachments to return.
479 190 *
480 - * @return string The Object-Type.
191 + * @return array The attachments.
481 192 */
482 - protected function get_type() {
483 - $post_format_setting = \get_option( 'activitypub_object_type', ACTIVITYPUB_DEFAULT_OBJECT_TYPE );
484 -
485 - if ( 'wordpress-post-format' !== $post_format_setting ) {
486 - $object_type = \ucfirst( $post_format_setting );
487 - } elseif ( ! \post_type_supports( $this->item->post_type, 'title' ) || ! $this->item->post_title ) {
488 - $object_type = 'Note';
489 - } elseif ( 'page' === \get_post_type( $this->item ) ) {
490 - $object_type = 'Page';
491 - } elseif ( ! \get_post_format( $this->item ) ) {
492 - $object_type = 'Article';
493 - } else {
494 - $object_type = 'Note';
193 + protected function get_block_attachments( $media, $max_media ) {
194 + // max media can't be negative or zero
195 + if ( $max_media <= 0 ) {
196 + return array();
495 197 }
496 198
497 - /**
498 - * Filters the ActivityPub object type for a post.
499 - *
500 - * Allows downstream consumers to override the discriminator that
501 - * decides whether a post federates as Note, Article, or Page.
502 - * The filtered value propagates to all internal callers of
503 - * get_type(), including former_type/tombstone handling,
504 - * summary and title decisions, the content template, and the
505 - * preview guard, not only the wire-format type property.
506 - *
507 - * @since 8.1.1
508 - *
509 - * @param string $object_type The computed ActivityPub object type.
510 - * @param \WP_Post $post The WordPress post being transformed.
511 - */
512 - return \apply_filters( 'activitypub_post_object_type', $object_type, $this->item );
513 - }
199 + $blocks = \parse_blocks( $this->wp_object->post_content );
200 + $media = self::get_media_from_blocks( $blocks, $media );
514 201
515 - /**
516 - * Returns the Audience for the Post.
517 - *
518 - * @return string|null The audience.
519 - */
520 - public function get_audience() {
521 - $actor_mode = \get_option( 'activitypub_actor_mode', ACTIVITYPUB_ACTOR_MODE );
522 -
523 - if ( ACTIVITYPUB_ACTOR_AND_BLOG_MODE === $actor_mode ) {
524 - $blog = new Blog();
525 - return $blog->get_id();
526 - }
527 -
528 - return null;
202 + return $media;
529 203 }
530 204
531 205 /**
532 - * Returns a list of Tags, used in the Post.
206 + * Get image attachments from the classic editor.
207 + * This is imperfect as the contained images aren't necessarily the
208 + * same as the attachments.
533 209 *
534 - * This includes Hash-Tags and Mentions.
210 + * @param int $max_images The maximum number of images to return.
535 211 *
536 - * @return array The list of Tags.
212 + * @return array The attachment IDs.
537 213 */
538 - protected function get_tag() {
539 - if ( false !== $this->tags ) {
540 - return $this->tags;
214 + protected function get_classic_editor_image_attachments( $max_images ) {
215 + // max images can't be negative or zero
216 + if ( $max_images <= 0 ) {
217 + return array();
541 218 }
542 219
543 - $tags = parent::get_tag();
220 + $images = array();
221 + $query = new \WP_Query(
222 + array(
223 + 'post_parent' => $this->wp_object->ID,
224 + 'post_status' => 'inherit',
225 + 'post_type' => 'attachment',
226 + 'post_mime_type' => 'image',
227 + 'order' => 'ASC',
228 + 'orderby' => 'menu_order ID',
229 + 'posts_per_page' => $max_images,
230 + )
231 + );
544 232
545 - $post_tags = \get_the_tags( $this->item->ID );
546 - if ( $post_tags ) {
547 - foreach ( $post_tags as $post_tag ) {
548 - // Tag can be empty.
549 - if ( ! $post_tag ) {
550 - continue;
551 - }
552 -
553 - $tags[] = array(
554 - 'type' => 'Hashtag',
555 - 'href' => \esc_url_raw( \get_tag_link( $post_tag->term_id ) ),
556 - 'name' => esc_hashtag( $post_tag->name ),
557 - );
233 + foreach ( $query->get_posts() as $attachment ) {
234 + if ( ! \in_array( $attachment->ID, $images, true ) ) {
235 + $images[] = array( 'id' => $attachment->ID );
558 236 }
559 237 }
560 238
561 - $this->tags = \array_unique( $tags, SORT_REGULAR );
562 -
563 - return $this->tags;
239 + return $images;
564 240 }
565 241
566 242 /**
567 - * Returns the summary for the ActivityPub Item.
243 + * Get image embeds from the classic editor by parsing HTML.
568 244 *
569 - * The summary will be generated based on the user settings and only if the
570 - * object type is not set to `note`.
245 + * @param int $max_images The maximum number of images to return.
571 246 *
572 - * @return string|null The summary or null if the object type is `note`.
247 + * @return array The attachments.
573 248 */
574 - protected function get_summary() {
575 - if ( 'Note' === $this->get_type() ) {
576 - return null;
249 + protected function get_classic_editor_image_embeds( $max_images ) {
250 + // if someone calls that function directly, bail
251 + if ( ! \class_exists( '\WP_HTML_Tag_Processor' ) ) {
252 + return array();
577 253 }
578 254
579 - if ( false !== $this->summary ) {
580 - return $this->summary;
255 + // max images can't be negative or zero
256 + if ( $max_images <= 0 ) {
257 + return array();
581 258 }
582 259
583 - $this->summary = generate_post_summary( $this->item );
260 + $images = array();
261 + $base = \wp_get_upload_dir()['baseurl'];
262 + $content = \get_post_field( 'post_content', $this->wp_object );
263 + $tags = new \WP_HTML_Tag_Processor( $content );
584 264
585 - return $this->summary;
586 - }
265 + // This linter warning is a false positive - we have to
266 + // re-count each time here as we modify $images.
267 + // phpcs:ignore Squiz.PHP.DisallowSizeFunctionsInLoops.Found
268 + while ( $tags->next_tag( 'img' ) && ( \count( $images ) <= $max_images ) ) {
269 + $src = $tags->get_attribute( 'src' );
587 270
588 - /**
589 - * Returns the title for the ActivityPub Item.
590 - *
591 - * The title will be generated based on the user settings and only if the
592 - * object type is not set to `note`.
593 - *
594 - * @return string|null The title or null if the object type is `note`.
595 - */
596 - protected function get_name() {
597 - if ( 'Note' === $this->get_type() ) {
598 - return null;
599 - }
271 + // If the img source is in our uploads dir, get the
272 + // associated ID. Note: if there's a -500x500
273 + // type suffix, we remove it, but we try the original
274 + // first in case the original image is actually called
275 + // that. Likewise, we try adding the -scaled suffix for
276 + // the case that this is a small version of an image
277 + // that was big enough to get scaled down on upload:
278 + // https://make.wordpress.org/core/2019/10/09/introducing-handling-of-big-images-in-wordpress-5-3/
279 + if ( null !== $src && \str_starts_with( $src, $base ) ) {
280 + $img_id = \attachment_url_to_postid( $src );
600 281
601 - $title = \get_the_title( $this->item->ID );
282 + if ( 0 === $img_id ) {
283 + $count = 0;
284 + $src = preg_replace( '/-(?:\d+x\d+)(\.[a-zA-Z]+)$/', '$1', $src, 1, $count );
285 + if ( $count > 0 ) {
286 + $img_id = \attachment_url_to_postid( $src );
287 + }
288 + }
602 289
603 - if ( ! $title ) {
604 - return null;
605 - }
290 + if ( 0 === $img_id ) {
291 + $src = preg_replace( '/(\.[a-zA-Z]+)$/', '-scaled$1', $src );
292 + $img_id = \attachment_url_to_postid( $src );
293 + }
606 294
607 - return \wp_strip_all_tags(
608 - \html_entity_decode(
609 - $title
610 - )
611 - );
612 - }
613 -
614 - /**
615 - * Returns the content for the ActivityPub Item.
616 - *
617 - * The content will be generated based on the user settings.
618 - *
619 - * @return string The content.
620 - */
621 - protected function get_content() {
622 - if ( false !== $this->content ) {
623 - return $this->content;
624 - }
625 -
626 - global $post;
627 -
628 - // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
629 - $post = $this->item;
630 - $content = $this->get_post_content_template();
631 -
632 - /**
633 - * Provides an action hook so plugins can add their own hooks/filters before AP content is generated.
634 - *
635 - * Example: if a plugin adds a filter to `the_content` to add a button to the end of posts, it can also remove that filter here.
636 - *
637 - * @param \WP_Post $post The post object.
638 - */
639 - \do_action( 'activitypub_before_get_content', $post );
640 -
641 - // It seems that shortcodes are only applied to published posts.
642 - if ( \is_preview() ) {
643 - $post->post_status = 'publish';
644 - }
645 -
646 - // Register our shortcodes just in time.
647 - Shortcodes::register();
648 - // Fill in the shortcodes.
649 - \setup_postdata( $post );
650 - $content = \do_shortcode( $content );
651 - \wp_reset_postdata();
652 -
653 - // Don't need these anymore, should never appear in a post.
654 - Shortcodes::unregister();
655 -
656 - /**
657 - * Filters the post content after it was transformed for ActivityPub.
658 - *
659 - * @param string $content The transformed post content.
660 - * @param \WP_Post $post The post object being transformed.
661 - */
662 - $this->content = \apply_filters( 'activitypub_the_content', $content, $post );
663 -
664 - return $this->content;
665 - }
666 -
667 - /**
668 - * Returns the in-reply-to URL of the post.
669 - *
670 - * @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-inreplyto
671 - *
672 - * @return string|array|null The in-reply-to URL of the post.
673 - */
674 - protected function get_in_reply_to() {
675 - if ( false !== $this->in_reply_to ) {
676 - return $this->in_reply_to;
677 - }
678 -
679 - if ( ! site_supports_blocks() ) {
680 - $this->in_reply_to = null;
681 - return $this->in_reply_to;
682 - }
683 -
684 - $reply_urls = array();
685 - $blocks = \parse_blocks( $this->item->post_content );
686 -
687 - foreach ( $blocks as $block ) {
688 - if ( 'activitypub/reply' === $block['blockName'] && isset( $block['attrs']['url'] ) ) {
689 -
690 - // Check if the URL has been validated as ActivityPub. Default to true for backwards compatibility.
691 - if ( $block['attrs']['isValidActivityPub'] ?? true ) {
692 - $reply_urls[] = $block['attrs']['url'];
295 + if ( 0 !== $img_id ) {
296 + $images[] = array(
297 + 'id' => $img_id,
298 + 'alt' => $tags->get_attribute( 'alt' ),
299 + );
693 300 }
694 301 }
695 302 }
696 303
697 - if ( empty( $reply_urls ) ) {
698 - $this->in_reply_to = null;
699 -
700 - return $this->in_reply_to;
701 - }
702 -
703 - if ( 1 === \count( $reply_urls ) ) {
704 - $this->in_reply_to = \current( $reply_urls );
705 -
706 - return $this->in_reply_to;
707 - }
708 -
709 - $this->in_reply_to = \array_values( \array_unique( $reply_urls ) );
710 -
711 - return $this->in_reply_to;
304 + return $images;
712 305 }
713 306
714 307 /**
715 - * Returns the published date of the post.
308 + * Get post images from the classic editor.
309 + * Note that audio/video attachments are only supported in the block editor.
716 310 *
717 - * @return string The published date of the post.
718 - */
719 - protected function get_published() {
720 - $published = \strtotime( $this->item->post_date_gmt );
721 -
722 - return \gmdate( ACTIVITYPUB_DATE_TIME_RFC3339, $published );
723 - }
724 -
725 - /**
726 - * Returns the updated date of the post.
311 + * @param array $media The media array grouped by type.
312 + * @param int $max_images The maximum number of images to return.
727 313 *
728 - * @return string|null The updated date of the post.
314 + * @return array The attachments.
729 315 */
730 - protected function get_updated() {
731 - $published = \strtotime( $this->item->post_date_gmt );
732 - $updated = \strtotime( $this->item->post_modified_gmt );
733 -
734 - if ( $updated > $published ) {
735 - return \gmdate( ACTIVITYPUB_DATE_TIME_RFC3339, $updated );
316 + protected function get_classic_editor_images( $media, $max_images ) {
317 + // max images can't be negative or zero
318 + if ( $max_images <= 0 ) {
319 + return array();
736 320 }
737 321
738 - return null;
739 - }
740 -
741 - /**
742 - * Returns the location of the post as a Place object.
743 - *
744 - * Uses WordPress Geodata post meta fields to build the location.
745 - *
746 - * @see https://codex.wordpress.org/Geodata
747 - * @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-location
748 - *
749 - * @return array|null The Place object or null if no public geodata is available.
750 - */
751 - protected function get_location() {
752 - $post_id = $this->item->ID;
753 - $meta = \get_post_meta( $post_id );
754 -
755 - // If geo_public exists and is explicitly set to 0, don't share location.
756 - if ( isset( $meta['geo_public'] ) && '0' === $meta['geo_public'][0] ) {
757 - return null;
322 + if ( \count( $media['image'] ) <= $max_images ) {
323 + if ( \class_exists( '\WP_HTML_Tag_Processor' ) ) {
324 + $media['image'] = \array_merge( $media['image'], $this->get_classic_editor_image_embeds( $max_images ) );
325 + } else {
326 + $media['image'] = \array_merge( $media['image'], $this->get_classic_editor_image_attachments( $max_images ) );
327 + }
758 328 }
759 329
760 - // Both latitude and longitude are required for a valid location.
761 - // Use is_numeric() instead of empty() since 0 is a valid coordinate (Equator/Prime Meridian).
762 - $has_latitude = isset( $meta['geo_latitude'][0] ) && \is_numeric( $meta['geo_latitude'][0] );
763 - $has_longitude = isset( $meta['geo_longitude'][0] ) && \is_numeric( $meta['geo_longitude'][0] );
764 -
765 - if ( ! $has_latitude || ! $has_longitude ) {
766 - return null;
767 - }
768 -
769 - $place = array(
770 - 'type' => 'Place',
771 - 'latitude' => (float) $meta['geo_latitude'][0],
772 - 'longitude' => (float) $meta['geo_longitude'][0],
773 - );
774 -
775 - // Add the address/name if available.
776 - if ( ! empty( $meta['geo_address'][0] ) ) {
777 - $place['name'] = \sanitize_text_field( $meta['geo_address'][0] );
778 - }
779 -
780 - /**
781 - * Filter the location Place object for a post.
782 - *
783 - * @param array $place The Place object.
784 - * @param \WP_Post $post The post object.
785 - * @param int $post_id The post ID.
786 - *
787 - * @return array|null The filtered Place object or null to disable location.
788 - */
789 - return \apply_filters( 'activitypub_post_location', $place, $this->item, $post_id );
330 + return $media;
790 331 }
791 332
792 333 /**
793 - * Helper function to extract the @-Mentions from the post content.
794 - *
795 - * @return array The list of @-Mentions.
796 - */
797 - protected function get_mentions() {
798 - if ( false !== $this->mentions ) {
799 - return $this->mentions;
800 - }
801 -
802 - /**
803 - * Filter the mentions in the post content.
804 - *
805 - * @param array $mentions The mentions.
806 - * @param string $content The post content.
807 - * @param \WP_Post $post The post object.
808 - *
809 - * @return array The filtered mentions.
810 - */
811 - $this->mentions = \apply_filters(
812 - 'activitypub_extract_mentions',
813 - array(),
814 - $this->item->post_content . ' ' . $this->item->post_excerpt,
815 - $this->item
816 - );
817 -
818 - return $this->mentions;
819 - }
820 -
821 - /**
822 - * Whether the post should be redacted from ActivityPub representations.
823 - *
824 - * Redaction is fail-closed at a single boundary: `to_object()` returns a
825 - * Tombstone instead of transforming the post, so no body-derived field
826 - * (content, summary, name, preview, attachments, image/icon, tags, mentions,
827 - * in-reply-to, location) is ever read — not even one added to the transformer
828 - * later. This is the only caller of this gate.
829 - *
830 - * A post is redacted exactly when it is not publicly queryable — the same
831 - * predicate the scheduler uses to decide a federated post should emit a
832 - * Delete (`is_post_publicly_queryable()`), so the two never disagree. That
833 - * covers non-public status, password protection, the `local`/`private`
834 - * content-visibility meta, and a post type that no longer supports
835 - * ActivityPub. The Fediverse Preview keeps working because
836 - * `is_post_publicly_queryable()` itself treats a draft/pending/scheduled
837 - * post as queryable during a `?preview=true` request from a user who can
838 - * edit it.
839 - *
840 - * Note: we deliberately rely on `is_post_publicly_queryable()` rather than
841 - * `post_password_required()`. Federation output is per-instance, never
842 - * per-request, and `post_password_required()` returns false when a valid
843 - * `wp-postpass` cookie is on the current request (e.g. an editor who unlocked
844 - * the post), which would leak the protected body into an outbox snapshot.
845 - *
846 - * @return boolean True if the post must be redacted, false otherwise.
847 - */
848 - protected function is_redacted() {
849 - return ! is_post_publicly_queryable( $this->item );
850 - }
851 -
852 - /**
853 334 * Get enclosures for a post.
854 335 *
855 336 * @param array $media The media array grouped by type.
856 337 *
@@ -855,10 +336,10 @@
855 336 * @param array $media The media array grouped by type.
856 337 *
857 338 * @return array The media array extended with enclosures.
858 339 */
859 - protected function get_enclosures( $media ) {
860 - $enclosures = get_enclosures( $this->item->ID );
340 + public function get_enclosures( $media ) {
341 + $enclosures = get_enclosures( $this->wp_object->ID );
861 342
862 343 if ( ! $enclosures ) {
863 344 return $media;
864 345 }
@@ -863,22 +344,20 @@
863 344 return $media;
864 345 }
865 346
866 347 foreach ( $enclosures as $enclosure ) {
867 - // Check if URL is an attachment.
348 + // check if URL is an attachment
868 349 $attachment_id = \attachment_url_to_postid( $enclosure['url'] );
869 -
870 350 if ( $attachment_id ) {
871 - $enclosure['id'] = $attachment_id;
872 - $enclosure['url'] = \wp_get_attachment_url( $attachment_id );
351 + $enclosure['id'] = $attachment_id;
352 + $enclosure['url'] = \wp_get_attachment_url( $attachment_id );
873 353 $enclosure['mediaType'] = \get_post_mime_type( $attachment_id );
874 354 }
875 355
876 - $mime_type = $enclosure['mediaType'];
877 - $media_type = \strtok( $mime_type, '/' );
878 - $enclosure['type'] = \ucfirst( $media_type );
356 + $mime_type = $enclosure['mediaType'];
357 + $mime_type_parts = \explode( '/', $mime_type );
879 358
880 - switch ( $media_type ) {
359 + switch ( $mime_type_parts[0] ) {
881 360 case 'image':
882 361 $media['image'][] = $enclosure;
883 362 break;
884 363 case 'audio':
@@ -893,39 +372,20 @@
893 372 return $media;
894 373 }
895 374
896 375 /**
897 - * Get media attachments from blocks. They will be formatted as ActivityPub attachments, not as WP attachments.
898 - *
899 - * @param array $media The media array grouped by type.
900 - * @param int $max_media The maximum number of attachments to return.
901 - *
902 - * @return array The attachments.
903 - */
904 - protected function get_block_attachments( $media, $max_media ) {
905 - // Max media can't be negative or zero.
906 - if ( $max_media <= 0 ) {
907 - return array();
908 - }
909 -
910 - $blocks = \parse_blocks( $this->item->post_content );
911 -
912 - return $this->get_media_from_blocks( $blocks, $media );
913 - }
914 -
915 - /**
916 376 * Recursively get media IDs from blocks.
377 + * @param array $blocks The blocks to search for media IDs
378 + * @param array $media The media IDs to append new IDs to
379 + * @param int $max_media The maximum number of media to return.
917 380 *
918 - * @param array $blocks The blocks to search for media IDs.
919 - * @param array $media The media IDs to append new IDs to.
920 - *
921 381 * @return array The image IDs.
922 382 */
923 - protected function get_media_from_blocks( $blocks, $media ) {
383 + protected static function get_media_from_blocks( $blocks, $media ) {
924 384 foreach ( $blocks as $block ) {
925 - // Recurse into inner blocks.
385 + // recurse into inner blocks
926 386 if ( ! empty( $block['innerBlocks'] ) ) {
927 - $media = $this->get_media_from_blocks( $block['innerBlocks'], $media );
387 + $media = self::get_media_from_blocks( $block['innerBlocks'], $media );
928 388 }
929 389
930 390 switch ( $block['blockName'] ) {
931 391 case 'core/image':
@@ -930,76 +390,21 @@
930 390 switch ( $block['blockName'] ) {
931 391 case 'core/image':
932 392 case 'core/cover':
933 393 if ( ! empty( $block['attrs']['id'] ) ) {
934 - $alt = '';
935 - $processor = new \WP_HTML_Tag_Processor( $block['innerHTML'] );
936 - if ( $processor->next_tag( array( 'tag_name' => 'img' ) ) ) {
937 - $alt = $processor->get_attribute( 'alt' ) ?? '';
938 - }
394 + $alt = '';
395 + $check = preg_match( '/<img.*?alt\s*=\s*([\"\'])(.*?)\1.*>/i', $block['innerHTML'], $match );
939 396
940 - $found = false;
941 - foreach ( $media['image'] as $i => $image ) {
942 - if ( isset( $image['id'] ) && $image['id'] === $block['attrs']['id'] ) {
943 - $media['image'][ $i ]['alt'] = $alt;
944 - $found = true;
945 - break;
946 - }
397 + if ( $check ) {
398 + $alt = $match[2];
947 399 }
948 400
949 - if ( ! $found ) {
950 - $media['image'][] = array(
951 - 'id' => $block['attrs']['id'],
952 - 'alt' => $alt,
953 - );
954 - }
401 + $media['image'][] = array(
402 + 'id' => $block['attrs']['id'],
403 + 'alt' => $alt,
404 + );
955 405 }
956 406 break;
957 - case 'core/media-text':
958 - if ( ! empty( $block['attrs']['mediaId'] ) ) {
959 - $media_id = $block['attrs']['mediaId'];
960 -
961 - // Media & Text holds either an image or a video; the default is image.
962 - if ( 'video' === ( $block['attrs']['mediaType'] ?? 'image' ) ) {
963 - $video = array( 'id' => $media_id );
964 -
965 - // The poster is stored as an HTML attribute on the <video> tag, not in block attrs.
966 - $processor = new \WP_HTML_Tag_Processor( $block['innerHTML'] );
967 - if ( $processor->next_tag( array( 'tag_name' => 'video' ) ) ) {
968 - $poster = $processor->get_attribute( 'poster' );
969 - if ( ! empty( $poster ) ) {
970 - $video['icon'] = \esc_url_raw( $poster );
971 - }
972 - }
973 -
974 - $media['video'][] = $video;
975 - } else {
976 - $alt = '';
977 - $processor = new \WP_HTML_Tag_Processor( $block['innerHTML'] );
978 - if ( $processor->next_tag( array( 'tag_name' => 'img' ) ) ) {
979 - $alt = $processor->get_attribute( 'alt' ) ?? '';
980 - }
981 -
982 - // Update alt in place if the image was already collected, so a
983 - // duplicate ID does not get dropped (and its alt lost) later.
984 - $found = false;
985 - foreach ( $media['image'] as $i => $image ) {
986 - if ( isset( $image['id'] ) && $image['id'] === $media_id ) {
987 - $media['image'][ $i ]['alt'] = $alt;
988 - $found = true;
989 - break;
990 - }
991 - }
992 -
993 - if ( ! $found ) {
994 - $media['image'][] = array(
995 - 'id' => $media_id,
996 - 'alt' => $alt,
997 - );
998 - }
999 - }
1000 - }
1001 - break;
1002 407 case 'core/audio':
1003 408 if ( ! empty( $block['attrs']['id'] ) ) {
1004 409 $media['audio'][] = array( 'id' => $block['attrs']['id'] );
1005 410 }
@@ -1006,29 +411,18 @@
1006 411 break;
1007 412 case 'core/video':
1008 413 case 'videopress/video':
1009 414 if ( ! empty( $block['attrs']['id'] ) ) {
1010 - $video = array( 'id' => $block['attrs']['id'] );
1011 -
1012 - // The poster is stored as an HTML attribute on the <video> tag, not in block attrs.
1013 - $processor = new \WP_HTML_Tag_Processor( $block['innerHTML'] );
1014 - if ( $processor->next_tag( array( 'tag_name' => 'video' ) ) ) {
1015 - $poster = $processor->get_attribute( 'poster' );
1016 - if ( ! empty( $poster ) ) {
1017 - $video['icon'] = \esc_url_raw( $poster );
1018 - }
1019 - }
1020 -
1021 - $media['video'][] = $video;
415 + $media['video'][] = array( 'id' => $block['attrs']['id'] );
1022 416 }
1023 417 break;
1024 418 case 'jetpack/slideshow':
1025 419 case 'jetpack/tiled-gallery':
1026 420 if ( ! empty( $block['attrs']['ids'] ) ) {
1027 - $media['image'] = \array_merge(
421 + $media['image'] = array_merge(
1028 422 $media['image'],
1029 - \array_map(
1030 - static function ( $id ) {
423 + array_map(
424 + function ( $id ) {
1031 425 return array( 'id' => $id );
1032 426 },
1033 427 $block['attrs']['ids']
1034 428 )
@@ -1051,195 +445,437 @@
1051 445
1052 446 /**
1053 447 * Filter media IDs by object type.
1054 448 *
1055 - * @param array $media The media array grouped by type.
1056 - * @param string $type The object type.
1057 - * @param \WP_Post $item The post object.
449 + * @param array $media The media array grouped by type.
450 + * @param string $type The object type.
1058 451 *
1059 452 * @return array The filtered media IDs.
1060 453 */
1061 - protected function filter_media_by_object_type( $media, $type, $item ) {
1062 - /**
1063 - * Filter the object type for media attachments.
1064 - *
1065 - * @param string $type The object type.
1066 - * @param \WP_Post $item The post object.
1067 - *
1068 - * @return string The filtered object type.
1069 - */
1070 - $type = \apply_filters( 'filter_media_by_object_type', \strtolower( $type ), $item );
454 + protected static function filter_media_by_object_type( $media, $type, $wp_object ) {
455 + $type = \apply_filters( 'filter_media_by_object_type', \strtolower( $type ), $wp_object );
1071 456
1072 457 if ( ! empty( $media[ $type ] ) ) {
1073 458 return $media[ $type ];
1074 459 }
1075 460
1076 - return \array_filter( \array_merge( ...\array_values( $media ) ) );
461 + return array_filter( array_merge( array(), ...array_values( $media ) ) );
1077 462 }
1078 463
1079 464 /**
1080 - * Get the context of the post.
465 + * Converts a WordPress Attachment to an ActivityPub Attachment.
1081 466 *
1082 - * @see https://www.w3.org/TR/activitystreams-vocabulary/#dfn-context
467 + * @param array $media The Attachment array.
1083 468 *
1084 - * @return string The context of the post.
469 + * @return array The ActivityPub Attachment.
1085 470 */
1086 - protected function get_context() {
1087 - return get_rest_url_by_path( \sprintf( 'posts/%d/context', $this->item->ID ) );
471 + public static function wp_attachment_to_activity_attachment( $media ) {
472 + if ( ! isset( $media['id'] ) ) {
473 + return $media;
474 + }
475 +
476 + $id = $media['id'];
477 + $attachment = array();
478 + $mime_type = \get_post_mime_type( $id );
479 + $mime_type_parts = \explode( '/', $mime_type );
480 + // switching on image/audio/video
481 + switch ( $mime_type_parts[0] ) {
482 + case 'image':
483 + $image_size = 'large';
484 +
485 + /**
486 + * Filter the image URL returned for each post.
487 + *
488 + * @param array|false $thumbnail The image URL, or false if no image is available.
489 + * @param int $id The attachment ID.
490 + * @param string $image_size The image size to retrieve. Set to 'large' by default.
491 + */
492 + $thumbnail = apply_filters(
493 + 'activitypub_get_image',
494 + self::get_wordpress_attachment( $id, $image_size ),
495 + $id,
496 + $image_size
497 + );
498 +
499 + if ( $thumbnail ) {
500 + $image = array(
501 + 'type' => 'Image',
502 + 'url' => \esc_url( $thumbnail[0] ),
503 + 'mediaType' => \esc_attr( $mime_type ),
504 + );
505 +
506 + if ( ! empty( $media['alt'] ) ) {
507 + $image['name'] = \wp_strip_all_tags( \html_entity_decode( $media['alt'] ) );
508 + } else {
509 + $alt = \get_post_meta( $id, '_wp_attachment_image_alt', true );
510 + if ( $alt ) {
511 + $image['name'] = \wp_strip_all_tags( \html_entity_decode( $alt ) );
512 + }
513 + }
514 +
515 + $attachment = $image;
516 + }
517 + break;
518 +
519 + case 'audio':
520 + case 'video':
521 + $attachment = array(
522 + 'type' => 'Document',
523 + 'mediaType' => \esc_attr( $mime_type ),
524 + 'url' => \esc_url( \wp_get_attachment_url( $id ) ),
525 + 'name' => \esc_attr( \get_the_title( $id ) ),
526 + );
527 + $meta = wp_get_attachment_metadata( $id );
528 + // height and width for videos
529 + if ( isset( $meta['width'] ) && isset( $meta['height'] ) ) {
530 + $attachment['width'] = \esc_attr( $meta['width'] );
531 + $attachment['height'] = \esc_attr( $meta['height'] );
532 + }
533 + // @todo: add `icon` support for audio/video attachments. Maybe use post thumbnail?
534 + break;
535 + }
536 +
537 + return \apply_filters( 'activitypub_attachment', $attachment, $id );
1088 538 }
1089 539
1090 540 /**
1091 - * Gets the template to use to generate the content of the activitypub item.
541 + * Return details about an image attachment.
1092 542 *
1093 - * @return string The Template.
543 + * @param int $id The attachment ID.
544 + * @param string $image_size The image size to retrieve. Set to 'large' by default.
545 + *
546 + * @return array|false Array of image data, or boolean false if no image is available.
1094 547 */
1095 - protected function get_post_content_template() {
1096 - $content = \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT );
1097 - $template = $content ?: ACTIVITYPUB_CUSTOM_POST_CONTENT;
548 + protected static function get_wordpress_attachment( $id, $image_size = 'large' ) {
549 + /**
550 + * Hook into the image retrieval process. Before image retrieval.
551 + *
552 + * @param int $id The attachment ID.
553 + * @param string $image_size The image size to retrieve. Set to 'large' by default.
554 + */
555 + do_action( 'activitypub_get_image_pre', $id, $image_size );
1098 556
557 + $image = \wp_get_attachment_image_src( $id, $image_size );
558 +
559 + /**
560 + * Hook into the image retrieval process. After image retrieval.
561 + *
562 + * @param int $id The attachment ID.
563 + * @param string $image_size The image size to retrieve. Set to 'large' by default.
564 + */
565 + do_action( 'activitypub_get_image_post', $id, $image_size );
566 +
567 + return $image;
568 + }
569 +
570 + /**
571 + * Returns the ActivityStreams 2.0 Object-Type for a Post based on the
572 + * settings and the Post-Type.
573 + *
574 + * @see https://www.w3.org/TR/activitystreams-vocabulary/#activity-types
575 + *
576 + * @return string The Object-Type.
577 + */
578 + protected function get_type() {
1099 579 $post_format_setting = \get_option( 'activitypub_object_type', ACTIVITYPUB_DEFAULT_OBJECT_TYPE );
1100 - $type = $this->get_type();
1101 580
1102 - if ( 'wordpress-post-format' === $post_format_setting ) {
1103 - $template = '';
581 + if ( 'wordpress-post-format' !== $post_format_setting ) {
582 + return \ucfirst( $post_format_setting );
583 + }
1104 584
1105 - /*
1106 - * If the post is a note, not a reply, and does not have mentions
1107 - * force the inclusion of the post title.
1108 - */
1109 - if (
1110 - 'Note' === $type
1111 - && empty( $this->get_in_reply_to() )
1112 - && empty( $this->get_mentions() )
1113 - ) {
1114 - $template .= '[ap_title type="html"]';
1115 - }
585 + $has_title = post_type_supports( $this->wp_object->post_type, 'title' );
1116 586
1117 - $template .= '[ap_content]';
587 + if ( ! $has_title ) {
588 + return 'Note';
1118 589 }
1119 590
1120 - /**
1121 - * Filters the template used to generate ActivityPub object content.
1122 - *
1123 - * This filter allows developers to modify the template that determines how post
1124 - * content is formatted in ActivityPub objects. The template can include special
1125 - * shortcodes like [ap_title] and [ap_content] that are processed during content
1126 - * generation.
1127 - *
1128 - * @since 7.6.0 Added the $type parameter.
1129 - *
1130 - * @param string $template The template string containing shortcodes.
1131 - * @param \WP_Post $item The WordPress post object being transformed.
1132 - * @param string $type ActivityStreams 2.0 Object-Type for the post.
1133 - */
1134 - return \apply_filters( 'activitypub_object_content_template', $template, $this->item, $type );
591 + // Default to Article.
592 + $object_type = 'Note';
593 + $post_format = 'standard';
594 +
595 + if ( \get_theme_support( 'post-formats' ) ) {
596 + $post_format = \get_post_format( $this->wp_object );
597 + }
598 +
599 + $post_type = \get_post_type( $this->wp_object );
600 + switch ( $post_type ) {
601 + case 'post':
602 + switch ( $post_format ) {
603 + case 'standard':
604 + case '':
605 + $object_type = 'Article';
606 + break;
607 + default:
608 + $object_type = 'Note';
609 + break;
610 + }
611 + break;
612 + case 'page':
613 + $object_type = 'Page';
614 + break;
615 + default:
616 + $object_type = 'Note';
617 + break;
618 + }
619 +
620 + return $object_type;
1135 621 }
1136 622
1137 623 /**
1138 - * Get the replies Collection.
624 + * Returns a list of Mentions, used in the Post.
1139 625 *
1140 - * @return array|null The replies collection on success or null on failure.
626 + * @see https://docs.joinmastodon.org/spec/activitypub/#Mention
627 + *
628 + * @return array The list of Mentions.
1141 629 */
1142 - public function get_replies() {
1143 - return Replies::get_collection( $this->item );
630 + protected function get_cc() {
631 + $cc = array();
632 +
633 + $mentions = $this->get_mentions();
634 + if ( $mentions ) {
635 + foreach ( $mentions as $url ) {
636 + $cc[] = $url;
637 + }
638 + }
639 +
640 + return $cc;
1144 641 }
1145 642
643 +
644 + public function get_audience() {
645 + if ( is_single_user() ) {
646 + return null;
647 + } else {
648 + $blog = new Blog();
649 + return $blog->get_id();
650 + }
651 + }
652 +
1146 653 /**
1147 - * Get the likes Collection.
654 + * Returns a list of Tags, used in the Post.
1148 655 *
1149 - * @return array The likes collection.
656 + * This includes Hash-Tags and Mentions.
657 + *
658 + * @return array The list of Tags.
1150 659 */
1151 - public function get_likes() {
1152 - return array(
1153 - 'id' => get_rest_url_by_path( \sprintf( 'posts/%d/likes', $this->item->ID ) ),
1154 - 'type' => 'Collection',
1155 - 'totalItems' => Interactions::count_by_type( $this->item->ID, 'like' ),
1156 - );
660 + protected function get_tag() {
661 + $tags = array();
662 +
663 + $post_tags = \get_the_tags( $this->wp_object->ID );
664 + if ( $post_tags ) {
665 + foreach ( $post_tags as $post_tag ) {
666 + $tag = array(
667 + 'type' => 'Hashtag',
668 + 'href' => \esc_url( \get_tag_link( $post_tag->term_id ) ),
669 + 'name' => esc_hashtag( $post_tag->name ),
670 + );
671 + $tags[] = $tag;
672 + }
673 + }
674 +
675 + $mentions = $this->get_mentions();
676 + if ( $mentions ) {
677 + foreach ( $mentions as $mention => $url ) {
678 + $tag = array(
679 + 'type' => 'Mention',
680 + 'href' => \esc_url( $url ),
681 + 'name' => \esc_html( $mention ),
682 + );
683 + $tags[] = $tag;
684 + }
685 + }
686 +
687 + return $tags;
1157 688 }
1158 689
1159 690 /**
1160 - * Get the shares Collection.
691 + * Returns the summary for the ActivityPub Item.
1161 692 *
1162 - * @return array The Shares collection.
693 + * The summary will be generated based on the user settings and only if the
694 + * object type is not set to `note`.
695 + *
696 + * @return string|null The summary or null if the object type is `note`.
1163 697 */
1164 - public function get_shares() {
1165 - return array(
1166 - 'id' => get_rest_url_by_path( \sprintf( 'posts/%d/shares', $this->item->ID ) ),
1167 - 'type' => 'Collection',
1168 - 'totalItems' => Interactions::count_by_type( $this->item->ID, 'repost' ) + Interactions::count_by_type( $this->item->ID, 'quote' ),
1169 - );
698 + protected function get_summary() {
699 + if ( 'Note' === $this->get_type() ) {
700 + return null;
701 + }
702 +
703 + // Remove Teaser from drafts.
704 + if ( 'draft' === \get_post_status( $this->wp_object ) ) {
705 + return \__( '(This post is being modified)', 'activitypub' );
706 + }
707 +
708 + $content = \get_post_field( 'post_content', $this->wp_object->ID );
709 + $content = \html_entity_decode( $content );
710 + $content = \wp_strip_all_tags( $content );
711 + $content = \trim( $content );
712 + $content = \preg_replace( '/\R+/m', "\n\n", $content );
713 + $content = \preg_replace( '/[\r\t]/', '', $content );
714 +
715 + $excerpt_more = \apply_filters( 'activitypub_excerpt_more', '[...]' );
716 + $length = 500;
717 + $length = $length - strlen( $excerpt_more );
718 +
719 + if ( \strlen( $content ) > $length ) {
720 + $content = \wordwrap( $content, $length, '</activitypub-summary>' );
721 + $content = \explode( '</activitypub-summary>', $content, 2 );
722 + $content = $content[0];
723 + }
724 +
725 + return $content . ' ' . $excerpt_more;
1170 726 }
1171 727
1172 728 /**
1173 - * Get the preview of the post.
729 + * Returns the title for the ActivityPub Item.
1174 730 *
1175 - * @return array|null The preview of the post or null if the post is not an Article.
731 + * The title will be generated based on the user settings and only if the
732 + * object type is not set to `note`.
733 + *
734 + * @return string|null The title or null if the object type is `note`.
1176 735 */
1177 - public function get_preview() {
1178 - if ( 'Article' !== $this->get_type() ) {
736 + protected function get_name() {
737 + if ( 'Note' === $this->get_type() ) {
1179 738 return null;
1180 739 }
1181 740
1182 - return array(
1183 - 'type' => 'Note',
1184 - 'content' => $this->get_summary(),
1185 - );
741 + $title = \get_the_title( $this->wp_object->ID );
742 +
743 + if ( $title ) {
744 + return \wp_strip_all_tags(
745 + \html_entity_decode(
746 + $title
747 + )
748 + );
749 + }
750 +
751 + return null;
1186 752 }
1187 753
1188 754 /**
1189 - * Get the quote policy.
755 + * Returns the content for the ActivityPub Item.
1190 756 *
1191 - * @return array The quote policy.
757 + * The content will be generated based on the user settings.
758 + *
759 + * @return string The content.
1192 760 */
1193 - private function get_quote_policy() {
1194 - $policy = \get_post_meta( $this->item->ID, 'activitypub_interaction_policy_quote', true );
761 + protected function get_content() {
762 + // Remove Content from drafts.
763 + if ( 'draft' === \get_post_status( $this->wp_object ) ) {
764 + return \__( '(This post is being modified)', 'activitypub' );
765 + }
1195 766
1196 - // Fall back to global default if not set.
1197 - if ( ! $policy ) {
1198 - $policy = \get_option( 'activitypub_default_quote_policy', ACTIVITYPUB_INTERACTION_POLICY_ANYONE );
1199 - }
767 + global $post;
1200 768
1201 - switch ( $policy ) {
1202 - case ACTIVITYPUB_INTERACTION_POLICY_FOLLOWERS:
1203 - return array( 'automaticApproval' => get_rest_url_by_path( \sprintf( 'actors/%d/followers', $this->item->post_author ) ) );
769 + /**
770 + * Provides an action hook so plugins can add their own hooks/filters before AP content is generated.
771 + *
772 + * Example: if a plugin adds a filter to `the_content` to add a button to the end of posts, it can also remove that filter here.
773 + *
774 + * @param WP_Post $post The post object.
775 + */
776 + do_action( 'activitypub_before_get_content', $post );
1204 777
1205 - case ACTIVITYPUB_INTERACTION_POLICY_ME:
1206 - return array( 'automaticApproval' => $this->get_self_interaction_policy() );
778 + add_filter( 'render_block_core/embed', array( self::class, 'revert_embed_links' ), 10, 2 );
1207 779
780 + // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
781 + $post = $this->wp_object;
782 + $content = $this->get_post_content_template();
783 +
784 + // Register our shortcodes just in time.
785 + Shortcodes::register();
786 + // Fill in the shortcodes.
787 + setup_postdata( $post );
788 + $content = do_shortcode( $content );
789 + wp_reset_postdata();
790 +
791 + $content = \wpautop( $content );
792 + $content = \preg_replace( '/[\n\r\t]/', '', $content );
793 + $content = \trim( $content );
794 +
795 + $content = \apply_filters( 'activitypub_the_content', $content, $post );
796 +
797 + // Don't need these any more, should never appear in a post.
798 + Shortcodes::unregister();
799 +
800 + return $content;
801 + }
802 +
803 + /**
804 + * Gets the template to use to generate the content of the activitypub item.
805 + *
806 + * @return string The Template.
807 + */
808 + protected function get_post_content_template() {
809 + $type = \get_option( 'activitypub_post_content_type', 'content' );
810 +
811 + switch ( $type ) {
812 + case 'excerpt':
813 + $template = "[ap_excerpt]\n\n[ap_permalink type=\"html\"]";
814 + break;
815 + case 'title':
816 + $template = "<h2>[ap_title]</h2>\n\n[ap_permalink type=\"html\"]";
817 + break;
818 + case 'content':
819 + $template = "[ap_content]\n\n[ap_permalink type=\"html\"]\n\n[ap_hashtags]";
820 + break;
1208 821 default:
1209 - return $this->get_public_interaction_policy();
822 + $template = \get_option( 'activitypub_custom_post_content', ACTIVITYPUB_CUSTOM_POST_CONTENT );
823 + break;
1210 824 }
825 +
826 + $post_format_setting = \get_option( 'activitypub_object_type', ACTIVITYPUB_DEFAULT_OBJECT_TYPE );
827 +
828 + if ( 'wordpress-post-format' === $post_format_setting ) {
829 + $template = '[ap_content]';
830 + }
831 +
832 + return apply_filters( 'activitypub_object_content_template', $template, $this->wp_object );
1211 833 }
1212 834
1213 835 /**
1214 - * Get the public interaction policy.
836 + * Helper function to get the @-Mentions from the post content.
1215 837 *
1216 - * @return array The public interaction policy.
838 + * @return array The list of @-Mentions.
1217 839 */
1218 - private function get_public_interaction_policy() {
1219 - return array(
1220 - 'automaticApproval' => 'https://www.w3.org/ns/activitystreams#Public',
1221 - 'always' => 'https://www.w3.org/ns/activitystreams#Public',
1222 - );
840 + protected function get_mentions() {
841 + return apply_filters( 'activitypub_extract_mentions', array(), $this->wp_object->post_content, $this->wp_object );
1223 842 }
1224 843
1225 844 /**
1226 - * Get the actor ID(s) for the `me` audience for use in interaction policies.
845 + * Returns the locale of the post.
1227 846 *
1228 - * @return string|array The actor ID(s).
847 + * @return string The locale of the post.
1229 848 */
1230 - private function get_self_interaction_policy() {
1231 - switch ( \get_option( 'activitypub_actor_mode', ACTIVITYPUB_ACTOR_MODE ) ) {
1232 - case ACTIVITYPUB_BLOG_MODE:
1233 - return ( new Blog() )->get_id();
849 + public function get_locale() {
850 + $post_id = $this->wp_object->ID;
851 + $lang = \strtolower( \strtok( \get_locale(), '_-' ) );
1234 852
1235 - case ACTIVITYPUB_ACTOR_AND_BLOG_MODE:
1236 - return array(
1237 - $this->get_actor_object()->get_id(),
1238 - ( new Blog() )->get_id(),
1239 - );
853 + /**
854 + * Filter the locale of the post.
855 + *
856 + * @param string $lang The locale of the post.
857 + * @param int $post_id The post ID.
858 + * @param WP_Post $post The post object.
859 + *
860 + * @return string The filtered locale of the post.
861 + */
862 + return apply_filters( 'activitypub_post_locale', $lang, $post_id, $this->wp_object );
863 + }
1240 864
1241 - default:
1242 - return $this->get_actor_object()->get_id();
1243 - }
865 + /**
866 + * Transform Embed blocks to block level link.
867 + *
868 + * Remote servers will simply drop iframe elements, rendering incomplete content.
869 + *
870 + * @see https://www.w3.org/TR/activitypub/#security-sanitizing-content
871 + * @see https://www.w3.org/wiki/ActivityPub/Primer/HTML
872 + *
873 + * @param string $block_content The block content (html)
874 + * @param object $block The block object
875 + *
876 + * @return string A block level link
877 + */
878 + public static function revert_embed_links( $block_content, $block ) {
879 + return '<p><a href="' . esc_url( $block['attrs']['url'] ) . '">' . $block['attrs']['url'] . '</a></p>';
1244 880 }
1245 881 }