3 * @copyright Copyright (C) 2010-2023, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Protocol\ActivityPub;
25 use Friendica\Content\Feature;
26 use Friendica\Content\Smilies;
27 use Friendica\Content\Text\BBCode;
28 use Friendica\Core\Cache\Enum\Duration;
29 use Friendica\Core\Logger;
30 use Friendica\Core\Protocol;
31 use Friendica\Core\System;
32 use Friendica\Database\DBA;
34 use Friendica\Model\APContact;
35 use Friendica\Model\Contact;
36 use Friendica\Model\GServer;
37 use Friendica\Model\Item;
38 use Friendica\Model\Photo;
39 use Friendica\Model\Post;
40 use Friendica\Model\Tag;
41 use Friendica\Model\User;
42 use Friendica\Network\HTTPException;
43 use Friendica\Protocol\Activity;
44 use Friendica\Protocol\ActivityPub;
45 use Friendica\Protocol\Relay;
46 use Friendica\Util\DateTimeFormat;
47 use Friendica\Util\HTTPSignature;
48 use Friendica\Util\LDSignature;
49 use Friendica\Util\Map;
50 use Friendica\Util\Network;
51 use Friendica\Util\Strings;
52 use Friendica\Util\XML;
55 * ActivityPub Transmitter Protocol class
62 const CACHEKEY_FEATURED = 'transmitter:getFeatured:';
63 const CACHEKEY_CONTACTS = 'transmitter:getContacts:';
66 * Add relay servers to the list of inboxes
68 * @param array $inboxes
69 * @return array inboxes with added relay servers
71 public static function addRelayServerInboxes(array $inboxes = []): array
73 foreach (Relay::getList(['inbox']) as $contact) {
74 $inboxes[$contact['inbox']] = $contact['inbox'];
81 * Add relay servers to the list of inboxes
83 * @param array $inboxes
84 * @return array inboxes with added relay servers
86 public static function addRelayServerInboxesForItem(int $item_id, array $inboxes = []): array
88 $item = Post::selectFirst(['uid'], ['id' => $item_id]);
93 $relays = Relay::getDirectRelayList($item_id);
98 foreach ($relays as $relay) {
99 $contact = Contact::getByURLForUser($relay['url'], $item['uid'], false, ['id']);
100 $inboxes[$relay['batch']][] = $contact['id'] ?? 0;
106 * Subscribe to a relay and updates contact on success
108 * @param string $url Subscribe actor url
109 * @return bool success
111 public static function sendRelayFollow(string $url): bool
113 $contact = Contact::getByURL($url);
114 if (empty($contact)) {
118 $activity_id = self::activityIDFromContact($contact['id']);
119 $success = self::sendActivity('Follow', $url, 0, $activity_id);
121 Contact::update(['rel' => Contact::FRIEND], ['id' => $contact['id']]);
128 * Unsubscribe from a relay and updates contact on success or forced
130 * @param string $url Subscribe actor url
131 * @param bool $force Set the relay status as non follower even if unsubscribe hadn't worked
132 * @return bool success
134 public static function sendRelayUndoFollow(string $url, bool $force = false): bool
136 $contact = Contact::getByURL($url);
137 if (empty($contact)) {
141 $success = self::sendContactUndo($url, $contact['id'], User::getSystemAccount());
143 if ($success || $force) {
144 Contact::update(['rel' => Contact::NOTHING], ['id' => $contact['id']]);
151 * Collects a list of contacts of the given owner
153 * @param array $owner Owner array
154 * @param array $rel The relevant value(s) contact.rel should match
155 * @param string $module The name of the relevant AP endpoint module (followers|following)
156 * @param integer $page Page number
157 * @param string $requester URL of the requester
158 * @param boolean $nocache Wether to bypass caching
159 * @return array of owners
162 public static function getContacts(array $owner, array $rel, string $module, int $page = null, string $requester = null, bool $nocache = false): array
165 $cachekey = self::CACHEKEY_CONTACTS . $module . ':'. $owner['uid'];
166 $result = DI::cache()->get($cachekey);
167 if (!$nocache && !is_null($result)) {
174 'uid' => $owner['uid'],
183 $condition = DBA::mergeConditions($parameters, ["`url` IN (SELECT `url` FROM `apcontact`)"]);
185 $total = DBA::count('contact', $condition);
187 $modulePath = '/' . $module . '/';
189 $data = ['@context' => ActivityPub::CONTEXT];
190 $data['id'] = DI::baseUrl() . $modulePath . $owner['nickname'];
191 $data['type'] = 'OrderedCollection';
192 $data['totalItems'] = $total;
195 $data['id'] .= '?' . http_build_query(['page' => $page]);
198 // When we hide our friends we will only show the pure number but don't allow more.
199 $show_contacts = ActivityPub::isAcceptedRequester($owner['uid']) && empty($owner['hide-friends']);
201 // Allow fetching the contact list when the requester is part of the list.
202 if (($owner['page-flags'] == User::PAGE_FLAGS_PRVGROUP) && !empty($requester)) {
203 $show_contacts = DBA::exists('contact', ['nurl' => Strings::normaliseLink($requester), 'uid' => $owner['uid'], 'blocked' => false]);
206 if (!$show_contacts) {
207 if (!empty($cachekey)) {
208 DI::cache()->set($cachekey, $data, Duration::DAY);
215 $data['first'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=1';
217 $data['type'] = 'OrderedCollectionPage';
220 $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]);
221 while ($contact = DBA::fetch($contacts)) {
222 $list[] = $contact['url'];
224 DBA::close($contacts);
226 if (count($list) == 100) {
227 $data['next'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=' . ($page + 1);
230 $data['partOf'] = DI::baseUrl() . $modulePath . $owner['nickname'];
232 $data['orderedItems'] = $list;
235 if (!empty($cachekey)) {
236 DI::cache()->set($cachekey, $data, Duration::DAY);
243 * Public posts for the given owner
245 * @param array $owner Owner array
246 * @param integer $page Page number
247 * @param boolean $nocache Wether to bypass caching
249 * @return array of posts
250 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
251 * @throws \ImagickException
253 public static function getFeatured(array $owner, int $page = null, bool $nocache = false): array
256 $cachekey = self::CACHEKEY_FEATURED . $owner['uid'];
257 $result = DI::cache()->get($cachekey);
258 if (!$nocache && !is_null($result)) {
263 $owner_cid = Contact::getIdForURL($owner['url'], 0, false);
265 $condition = ["`uri-id` IN (SELECT `uri-id` FROM `collection-view` WHERE `cid` = ? AND `type` = ?)",
266 $owner_cid, Post\Collection::FEATURED];
268 $condition = DBA::mergeConditions($condition, [
269 'uid' => $owner['uid'],
270 'author-id' => $owner_cid,
271 'private' => [Item::PUBLIC, Item::UNLISTED],
272 'gravity' => [Item::GRAVITY_PARENT, Item::GRAVITY_COMMENT],
273 'network' => Protocol::FEDERATED,
274 'parent-network' => Protocol::FEDERATED,
280 $count = Post::count($condition);
282 $data = ['@context' => ActivityPub::CONTEXT];
283 $data['id'] = DI::baseUrl() . '/featured/' . $owner['nickname'];
284 $data['type'] = 'OrderedCollection';
285 $data['totalItems'] = $count;
288 $data['id'] .= '?' . http_build_query(['page' => $page]);
292 $items = Post::select(['id'], $condition, ['limit' => 20, 'order' => ['created' => true]]);
294 $data['type'] = 'OrderedCollectionPage';
295 $items = Post::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
299 while ($item = Post::fetch($items)) {
300 $activity = self::createActivityFromItem($item['id'], true);
301 if (!empty($activity)) {
307 if (count($list) == 20) {
308 $data['next'] = DI::baseUrl() . '/featured/' . $owner['nickname'] . '?page=' . ($page + 1);
312 $data['partOf'] = DI::baseUrl() . '/featured/' . $owner['nickname'];
315 $data['orderedItems'] = $list;
317 if (!empty($cachekey)) {
318 DI::cache()->set($cachekey, $data, Duration::DAY);
325 * Return the service array containing information the used software and it's url
327 * @return array with service data
329 public static function getService(): array
333 'name' => App::PLATFORM . " '" . App::CODENAME . "' " . App::VERSION . '-' . DB_UPDATE_VERSION,
334 'url' => (string)DI::baseUrl()
339 * Return the ActivityPub profile of the given user
341 * @param int $uid User ID
342 * @param bool $full If not full, only the basic information is returned
343 * @return array with profile data
344 * @throws HTTPException\NotFoundException
345 * @throws HTTPException\InternalServerErrorException
347 public static function getProfile(int $uid, bool $full = true): array
349 $owner = User::getOwnerDataById($uid);
350 if (!isset($owner['id'])) {
351 DI::logger()->error('Unable to find owner data for uid', ['uid' => $uid]);
352 throw new HTTPException\NotFoundException('User not found.');
355 $data = ['@context' => ActivityPub::CONTEXT];
356 $data['id'] = $owner['url'];
358 if (!empty($owner['guid'])) {
359 $data['diaspora:guid'] = $owner['guid'];
362 $data['type'] = ActivityPub::ACCOUNT_TYPES[$owner['account-type']];
365 $data['following'] = DI::baseUrl() . '/following/' . $owner['nick'];
366 $data['followers'] = DI::baseUrl() . '/followers/' . $owner['nick'];
367 $data['inbox'] = DI::baseUrl() . '/inbox/' . $owner['nick'];
368 $data['outbox'] = DI::baseUrl() . '/outbox/' . $owner['nick'];
369 $data['featured'] = DI::baseUrl() . '/featured/' . $owner['nick'];
371 $data['inbox'] = DI::baseUrl() . '/friendica/inbox';
374 $data['preferredUsername'] = $owner['nick'];
375 $data['name'] = $owner['name'];
377 if (!$full && !empty($owner['country-name'] . $owner['region'] . $owner['locality'])) {
378 $data['vcard:hasAddress'] = ['@type' => 'vcard:Home', 'vcard:country-name' => $owner['country-name'],
379 'vcard:region' => $owner['region'], 'vcard:locality' => $owner['locality']];
382 if ($full && !empty($owner['about'])) {
383 $data['summary'] = BBCode::convertForUriId($owner['uri-id'] ?? 0, $owner['about'], BBCode::EXTERNAL);
386 if ($full && (!empty($owner['xmpp']) || !empty($owner['matrix']))) {
387 $data['vcard:hasInstantMessage'] = [];
389 if (!empty($owner['xmpp'])) {
390 $data['vcard:hasInstantMessage'][] = 'xmpp:' . $owner['xmpp'];
392 if (!empty($owner['matrix'])) {
393 $data['vcard:hasInstantMessage'][] = 'matrix:' . $owner['matrix'];
397 $data['url'] = $owner['url'];
398 $data['manuallyApprovesFollowers'] = in_array($owner['page-flags'], [User::PAGE_FLAGS_NORMAL, User::PAGE_FLAGS_PRVGROUP]);
399 $data['discoverable'] = (bool)$owner['net-publish'];
400 $data['publicKey'] = ['id' => $owner['url'] . '#main-key',
401 'owner' => $owner['url'],
402 'publicKeyPem' => $owner['pubkey']];
403 $data['endpoints'] = ['sharedInbox' => DI::baseUrl() . '/inbox'];
404 if ($full && $uid != 0) {
405 $data['icon'] = ['type' => 'Image', 'url' => User::getAvatarUrl($owner)];
407 $resourceid = Photo::ridFromURI($owner['photo']);
408 if (!empty($resourceid)) {
409 $photo = Photo::selectFirst(['type'], ["resource-id" => $resourceid]);
410 if (!empty($photo['type'])) {
411 $data['icon']['mediaType'] = $photo['type'];
415 if (!empty($owner['header'])) {
416 $data['image'] = ['type' => 'Image', 'url' => Contact::getHeaderUrlForId($owner['id'], '', $owner['updated'])];
418 $resourceid = Photo::ridFromURI($owner['header']);
419 if (!empty($resourceid)) {
420 $photo = Photo::selectFirst(['type'], ["resource-id" => $resourceid]);
421 if (!empty($photo['type'])) {
422 $data['image']['mediaType'] = $photo['type'];
429 foreach (DI::profileField()->selectByContactId(0, $uid) as $profile_field) {
431 'type' => 'PropertyValue',
432 'name' => $profile_field->label,
433 'value' => BBCode::convertForUriId($owner['uri-id'], $profile_field->value)
437 if (!empty($custom_fields)) {
438 $data['attachment'] = $custom_fields;
442 $data['generator'] = self::getService();
444 // tags: https://kitty.town/@inmysocks/100656097926961126.json
449 * Get a minimal actor array for the C2S API
451 * @param integer $cid
454 private static function getActorArrayByCid(int $cid): array
456 $contact = Contact::getById($cid);
458 'id' => $contact['url'],
459 'type' => $data['type'] = ActivityPub::ACCOUNT_TYPES[$contact['contact-type']],
460 'url' => $contact['alias'],
461 'preferredUsername' => $contact['nick'],
462 'name' => $contact['name'],
463 'icon' => ['type' => 'Image', 'url' => Contact::getAvatarUrlForId($cid, '', $contact['updated'])],
464 'image' => ['type' => 'Image', 'url' => Contact::getHeaderUrlForId($cid, '', $contact['updated'])],
465 'manuallyApprovesFollowers' => (bool)$contact['manually-approve'],
466 'discoverable' => !$contact['unsearchable'],
469 if (empty($data['url'])) {
470 $data['url'] = $data['id'];
477 * @param string $username
479 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
481 public static function getDeletedUser(string $username): array
484 '@context' => ActivityPub::CONTEXT,
485 'id' => DI::baseUrl() . '/profile/' . $username,
486 'type' => 'Tombstone',
487 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
488 'updated' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
489 'deleted' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
494 * Returns an array with permissions of the thread parent of the given item array
498 * @return array with permissions
499 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
500 * @throws \ImagickException
502 private static function fetchPermissionBlockFromThreadParent(array $item, bool $is_group_thread): array
504 if (empty($item['thr-parent-id'])) {
508 $parent = Post::selectFirstPost(['author-link'], ['uri-id' => $item['thr-parent-id']]);
509 if (empty($parent)) {
514 'to' => [$parent['author-link']],
521 $parent_profile = APContact::getByURL($parent['author-link']);
523 $item_profile = APContact::getByURL($item['author-link']);
524 $exclude[] = $item['author-link'];
526 if ($item['gravity'] == Item::GRAVITY_PARENT) {
527 $exclude[] = $item['owner-link'];
530 $type = [Tag::TO => 'to', Tag::CC => 'cc', Tag::BTO => 'bto', Tag::BCC => 'bcc', Tag::AUDIENCE => 'audience'];
531 foreach (Tag::getByURIId($item['thr-parent-id'], [Tag::TO, Tag::CC, Tag::BTO, Tag::BCC, Tag::AUDIENCE]) as $receiver) {
532 if (!empty($parent_profile['followers']) && $receiver['url'] == $parent_profile['followers'] && !empty($item_profile['followers'])) {
533 if (!$is_group_thread) {
534 $permissions[$type[$receiver['type']]][] = $item_profile['followers'];
536 } elseif (!in_array($receiver['url'], $exclude)) {
537 $permissions[$type[$receiver['type']]][] = $receiver['url'];
545 * Check if the given item id is from ActivityPub
547 * @param integer $item_id
548 * @return boolean "true" if the post is from ActivityPub
550 private static function isAPPost(int $item_id): bool
552 if (empty($item_id)) {
556 return Post::exists(['id' => $item_id, 'network' => Protocol::ACTIVITYPUB]);
560 * Creates an array of permissions from an item thread
562 * @param array $item Item array
563 * @param boolean $blindcopy addressing via "bcc" or "cc"?
564 * @param integer $last_id Last item id for adding receivers
566 * @return array with permission data
567 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
568 * @throws \ImagickException
570 private static function createPermissionBlockForItem(array $item, bool $blindcopy, int $last_id = 0): array
573 $last_id = $item['id'];
583 // Check if we should always deliver our stuff via BCC
584 if (!empty($item['uid'])) {
585 $owner = User::getOwnerDataById($item['uid']);
586 if (!empty($owner)) {
587 $always_bcc = $owner['hide-friends'];
588 $is_group = ($owner['account-type'] == User::ACCOUNT_TYPE_COMMUNITY);
590 $profile = APContact::getByURL($owner['url'], false);
591 $follower = $profile['followers'] ?? '';
595 if (DI::config()->get('system', 'ap_always_bcc')) {
599 $parent = Post::selectFirst(['causer-link', 'post-reason'], ['id' => $item['parent']]);
600 if (!empty($parent) && ($parent['post-reason'] == Item::PR_ANNOUNCEMENT) && !empty($parent['causer-link'])) {
601 $profile = APContact::getByURL($parent['causer-link'], false);
602 $is_group_thread = isset($profile['type']) && $profile['type'] == 'Group';
604 $is_group_thread = false;
608 $parent_tags = Tag::getByURIId($item['parent-uri-id'], [Tag::AUDIENCE, Tag::MENTION]);
609 if (!empty($parent_tags)) {
610 $is_group_thread = false;
611 foreach ($parent_tags as $tag) {
612 if ($tag['type'] != Tag::AUDIENCE) {
615 $profile = APContact::getByURL($tag['url'], false);
616 if (!empty($profile) && ($profile['type'] == 'Group')) {
617 $audience[] = $tag['url'];
618 $is_group_thread = true;
621 if ($is_group_thread) {
622 foreach ($parent_tags as $tag) {
623 if (($tag['type'] == Tag::MENTION) && in_array($tag['url'], $audience)) {
627 $exclusive = !$mention;
629 } elseif ($is_group_thread) {
630 foreach (Tag::getByURIId($item['parent-uri-id'], [Tag::MENTION, Tag::EXCLUSIVE_MENTION]) as $term) {
631 $profile = APContact::getByURL($term['url'], false);
632 if (!empty($profile) && ($profile['type'] == 'Group')) {
633 if ($term['type'] == Tag::EXCLUSIVE_MENTION) {
634 $audience[] = $term['url'];
636 } elseif ($term['type'] == Tag::MENTION) {
643 $audience[] = $owner['url'];
646 if (self::isAnnounce($item) || self::isAPPost($last_id)) {
647 // Will be activated in a later step
648 $networks = Protocol::FEDERATED;
650 // For now only send to these contacts:
651 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
654 $data = ['to' => [], 'cc' => [], 'bcc' => [] , 'audience' => $audience];
656 if ($item['gravity'] == Item::GRAVITY_PARENT) {
657 $actor_profile = APContact::getByURL($item['owner-link']);
659 $actor_profile = APContact::getByURL($item['author-link']);
662 $terms = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION, Tag::AUDIENCE]);
664 if ($item['private'] != Item::PRIVATE) {
665 // Directly mention the original author upon a quoted reshare.
666 // Else just ensure that the original author receives the reshare.
667 $announce = self::getAnnounceArray($item);
668 if (!empty($announce['comment'])) {
669 $data['to'][] = $announce['actor']['url'];
670 } elseif (!empty($announce)) {
671 $data['cc'][] = $announce['actor']['url'];
675 $data = array_merge_recursive($data, self::fetchPermissionBlockFromThreadParent($item, $is_group_thread));
678 // Check if the item is completely public or unlisted
679 if ($item['private'] == Item::PUBLIC) {
680 $data['to'][] = ActivityPub::PUBLIC_COLLECTION;
682 $data['cc'][] = ActivityPub::PUBLIC_COLLECTION;
685 foreach ($terms as $term) {
686 $profile = APContact::getByURL($term['url'], false);
687 if (!empty($profile)) {
688 if (($term['type'] == Tag::AUDIENCE) && ($profile['type'] == 'Group')) {
689 $data['audience'][] = $profile['url'];
691 if ($term['type'] == Tag::EXCLUSIVE_MENTION) {
693 if (!empty($profile['followers']) && ($profile['type'] == 'Group')) {
694 $data['cc'][] = $profile['followers'];
695 $data['audience'][] = $profile['url'];
697 } elseif (($term['type'] == Tag::MENTION) && ($profile['type'] == 'Group')) {
700 $data['to'][] = $profile['url'];
703 if (!$exclusive && ($item['private'] == Item::UNLISTED)) {
704 $data['to'][] = $actor_profile['followers'];
707 $receiver_list = Item::enumeratePermissions($item, true, false);
709 foreach ($terms as $term) {
710 $cid = Contact::getIdForURL($term['url'], $item['uid']);
711 if (!empty($cid) && in_array($cid, $receiver_list)) {
712 $contact = DBA::selectFirst('contact', ['url', 'network', 'protocol', 'gsid'], ['id' => $cid, 'network' => Protocol::FEDERATED]);
713 if (!DBA::isResult($contact) || !self::isAPContact($contact, $networks)) {
717 $profile = APContact::getByURL($term['url'], false);
718 if (!empty($profile)) {
719 if (($term['type'] == Tag::AUDIENCE) && ($profile['type'] == 'Group')) {
720 $data['audience'][] = $profile['url'];
722 if ($term['type'] == Tag::EXCLUSIVE_MENTION) {
724 if (!empty($profile['followers']) && ($profile['type'] == 'Group')) {
725 $data['cc'][] = $profile['followers'];
726 $data['audience'][] = $profile['url'];
728 } elseif (($term['type'] == Tag::MENTION) && ($profile['type'] == 'Group')) {
731 $data['to'][] = $profile['url'];
740 if ($is_group && !$exclusive && !empty($follower)) {
741 $data['cc'][] = $follower;
742 } elseif (!$exclusive) {
743 foreach ($receiver_list as $receiver) {
744 if ($receiver == -1) {
745 $data['to'][] = $actor_profile['followers'];
749 $contact = DBA::selectFirst('contact', ['url', 'hidden', 'network', 'protocol', 'gsid'], ['id' => $receiver, 'network' => Protocol::FEDERATED]);
750 if (!DBA::isResult($contact) || !self::isAPContact($contact, $networks)) {
754 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
755 if ($contact['hidden'] || $always_bcc) {
756 $data['bcc'][] = $profile['url'];
758 $data['cc'][] = $profile['url'];
765 if (!empty($item['parent']) && (!$exclusive || ($item['private'] == Item::PRIVATE))) {
766 if ($item['private'] == Item::PRIVATE) {
767 $condition = ['parent' => $item['parent'], 'uri-id' => $item['thr-parent-id']];
769 $condition = ['parent' => $item['parent']];
771 $parents = Post::select(['id', 'author-link', 'owner-link', 'gravity', 'uri'], $condition, ['order' => ['id']]);
772 while ($parent = Post::fetch($parents)) {
773 if ($parent['gravity'] == Item::GRAVITY_PARENT) {
774 $profile = APContact::getByURL($parent['owner-link'], false);
775 if (!empty($profile)) {
776 if ($item['gravity'] != Item::GRAVITY_PARENT) {
777 // Comments to groups are directed to the group
778 // But comments to groups aren't directed to the followers collection
779 // This rule is only valid when the actor isn't the group.
780 // The group needs to transmit their content to their followers.
781 if (($profile['type'] == 'Group') && ($profile['url'] != ($actor_profile['url'] ?? ''))) {
782 $data['to'][] = $profile['url'];
784 $data['cc'][] = $profile['url'];
785 if (($item['private'] != Item::PRIVATE) && !empty($actor_profile['followers']) && (!$exclusive || !$is_group_thread)) {
786 $data['cc'][] = $actor_profile['followers'];
789 } elseif (!$exclusive && !$is_group_thread) {
790 // Public thread parent post always are directed to the followers.
791 if ($item['private'] != Item::PRIVATE) {
792 $data['cc'][] = $actor_profile['followers'];
798 // Don't include data from future posts
799 if ($parent['id'] >= $last_id) {
803 $profile = APContact::getByURL($parent['author-link'], false);
804 if (!empty($profile)) {
805 if (($profile['type'] == 'Group') || ($parent['uri'] == $item['thr-parent'])) {
806 $data['to'][] = $profile['url'];
808 $data['cc'][] = $profile['url'];
812 DBA::close($parents);
815 $data['to'] = array_unique($data['to']);
816 $data['cc'] = array_unique($data['cc']);
817 $data['bcc'] = array_unique($data['bcc']);
818 $data['audience'] = array_unique($data['audience']);
820 if (($key = array_search($item['author-link'], $data['to'])) !== false) {
821 unset($data['to'][$key]);
824 if (($key = array_search($item['author-link'], $data['cc'])) !== false) {
825 unset($data['cc'][$key]);
828 if (($key = array_search($item['author-link'], $data['bcc'])) !== false) {
829 unset($data['bcc'][$key]);
832 foreach ($data['to'] as $to) {
833 if (($key = array_search($to, $data['cc'])) !== false) {
834 unset($data['cc'][$key]);
837 if (($key = array_search($to, $data['bcc'])) !== false) {
838 unset($data['bcc'][$key]);
842 foreach ($data['cc'] as $cc) {
843 if (($key = array_search($cc, $data['bcc'])) !== false) {
844 unset($data['bcc'][$key]);
848 $receivers = ['to' => array_values($data['to']), 'cc' => array_values($data['cc']), 'bcc' => array_values($data['bcc']), 'audience' => array_values($data['audience'])];
851 unset($receivers['bcc']);
854 if (!$blindcopy && count($receivers['audience']) == 1) {
855 $receivers['audience'] = $receivers['audience'][0];
856 } elseif (!$receivers['audience']) {
857 unset($receivers['audience']);
864 * Store the receivers for the given item
869 public static function storeReceiversForItem(array $item)
871 $receivers = self::createPermissionBlockForItem($item, true);
872 if (empty($receivers)) {
876 foreach (['to' => Tag::TO, 'cc' => Tag::CC, 'bcc' => Tag::BCC, 'audience' => Tag::AUDIENCE] as $element => $type) {
877 if (!empty($receivers[$element])) {
878 foreach ($receivers[$element] as $receiver) {
879 if ($receiver == ActivityPub::PUBLIC_COLLECTION) {
880 $name = Receiver::PUBLIC_COLLECTION;
882 $name = trim(parse_url($receiver, PHP_URL_PATH), '/');
884 Tag::store($item['uri-id'], $type, $name, $receiver);
891 * Get a list of receivers for the provided uri-id
894 * @param boolean $blindcopy
897 public static function getReceiversForUriId(int $uri_id, bool $blindcopy)
899 $tags = Tag::getByURIId($uri_id, [Tag::TO, Tag::CC, Tag::BCC, Tag::AUDIENCE]);
901 Logger::debug('No receivers found', ['uri-id' => $uri_id]);
902 $post = Post::selectFirst(Item::DELIVER_FIELDLIST, ['uri-id' => $uri_id, 'origin' => true]);
904 ActivityPub\Transmitter::storeReceiversForItem($post);
905 $tags = Tag::getByURIId($uri_id, [Tag::TO, Tag::CC, Tag::BCC, Tag::AUDIENCE]);
906 Logger::debug('Receivers are created', ['uri-id' => $uri_id, 'receivers' => count($tags)]);
908 Logger::debug('Origin item not found', ['uri-id' => $uri_id]);
919 foreach ($tags as $receiver) {
920 switch ($receiver['type']) {
922 $receivers['to'][] = $receiver['url'];
925 $receivers['cc'][] = $receiver['url'];
928 $receivers['bcc'][] = $receiver['url'];
931 $receivers['audience'][] = $receiver['url'];
937 unset($receivers['bcc']);
940 if (!$blindcopy && count($receivers['audience']) == 1) {
941 $receivers['audience'] = $receivers['audience'][0];
942 } elseif (!$receivers['audience']) {
943 unset($receivers['audience']);
950 * Check if an inbox is archived
952 * @param string $url Inbox url
953 * @return boolean "true" if inbox is archived
955 public static function archivedInbox(string $url): bool
957 return DBA::exists('inbox-status', ['url' => $url, 'archive' => true]);
961 * Check if a given contact should be delivered via AP
963 * @param array $contact Contact array
964 * @param array $networks Array with networks
965 * @return bool Whether the used protocol matches ACTIVITYPUB
968 private static function isAPContact(array $contact, array $networks): bool
970 if (in_array($contact['network'], $networks) || ($contact['protocol'] == Protocol::ACTIVITYPUB)) {
974 return GServer::getProtocol($contact['gsid'] ?? 0) == Post\DeliveryData::ACTIVITYPUB;
978 * Fetches a list of inboxes of followers of a given user
980 * @param integer $uid User ID
981 * @param boolean $all_ap Retrieve all AP enabled inboxes
982 * @return array of follower inboxes
983 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
984 * @throws \ImagickException
986 public static function fetchTargetInboxesforUser(int $uid, bool $all_ap = false): array
991 if (!empty($item['uid'])) {
992 $profile = User::getOwnerDataById($item['uid']);
993 if (!empty($profile)) {
994 $isGroup = $profile['account-type'] == User::ACCOUNT_TYPE_COMMUNITY;
999 // Will be activated in a later step
1000 $networks = Protocol::FEDERATED;
1002 // For now only send to these contacts:
1003 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
1012 'network' => Protocol::FEDERATED,
1013 'contact-type' => [Contact::TYPE_UNKNOWN, Contact::TYPE_PERSON, Contact::TYPE_NEWS, Contact::TYPE_ORGANISATION],
1017 $condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
1020 $contacts = DBA::select('contact', ['id', 'url', 'network', 'protocol', 'gsid'], $condition);
1021 while ($contact = DBA::fetch($contacts)) {
1022 if (!self::isAPContact($contact, $networks)) {
1026 if ($isGroup && ($contact['network'] == Protocol::DFRN)) {
1030 if (Network::isUrlBlocked($contact['url'])) {
1034 $profile = APContact::getByURL($contact['url'], false);
1035 if (!empty($profile)) {
1036 if (empty($profile['sharedinbox']) || Contact::isLocal($contact['url'])) {
1037 $target = $profile['inbox'];
1039 $target = $profile['sharedinbox'];
1041 if (!self::archivedInbox($target)) {
1042 $inboxes[$target][] = $contact['id'];
1046 DBA::close($contacts);
1052 * Fetches an array of inboxes for the given item and user
1054 * @param array $item Item array
1055 * @param integer $uid User ID
1056 * @return array with inboxes
1057 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1058 * @throws \ImagickException
1060 public static function fetchTargetInboxes(array $item, int $uid): array
1062 $permissions = self::getReceiversForUriId($item['uri-id'], true);
1063 if (empty($permissions)) {
1069 if ($item['gravity'] == Item::GRAVITY_ACTIVITY) {
1070 $item_profile = APContact::getByURL($item['author-link'], false);
1072 $item_profile = APContact::getByURL($item['owner-link'], false);
1075 if (empty($item_profile)) {
1079 $profile_uid = User::getIdForURL($item_profile['url']);
1081 foreach (['to', 'cc', 'bto', 'bcc', 'audience'] as $element) {
1082 if (empty($permissions[$element])) {
1086 $blindcopy = in_array($element, ['bto', 'bcc']);
1088 foreach ($permissions[$element] as $receiver) {
1089 if (empty($receiver) || Network::isUrlBlocked($receiver)) {
1093 if ($item_profile && ($receiver == $item_profile['followers']) && ($uid == $profile_uid)) {
1094 $inboxes = array_merge_recursive($inboxes, self::fetchTargetInboxesforUser($uid, true));
1096 $profile = APContact::getByURL($receiver, false);
1097 if (!empty($profile)) {
1098 $contact = Contact::getByURLForUser($receiver, $uid, false, ['id']);
1100 if (empty($profile['sharedinbox']) || $blindcopy || Contact::isLocal($receiver)) {
1101 $target = $profile['inbox'];
1103 $target = $profile['sharedinbox'];
1105 if (!self::archivedInbox($target) && !in_array($contact['id'], $inboxes[$target] ?? [])) {
1106 $inboxes[$target][] = $contact['id'] ?? 0;
1117 * Fetch the target inboxes for a given mail id
1119 * @param integer $mail_id
1122 public static function fetchTargetInboxesFromMail(int $mail_id): array
1124 $mail = DBA::selectFirst('mail', ['contact-id'], ['id' => $mail_id]);
1125 if (!DBA::isResult($mail)) {
1129 $account = DBA::selectFirst('account-user-view', ['ap-inbox'], ['id' => $mail['contact-id']]);
1130 if (empty($account['ap-inbox'])) {
1134 return [$account['ap-inbox'] => [$mail['contact-id']]];
1138 * Creates an array in the structure of the item table for a given mail id
1140 * @param integer $mail_id Mail id
1142 * @throws \Exception
1144 public static function getItemArrayFromMail(int $mail_id, bool $use_title = false): array
1146 $mail = DBA::selectFirst('mail', [], ['id' => $mail_id]);
1147 if (!DBA::isResult($mail)) {
1151 $reply = DBA::selectFirst('mail', ['uri', 'uri-id', 'from-url'], ['parent-uri' => $mail['parent-uri'], 'reply' => false]);
1152 if (!DBA::isResult($reply)) {
1156 // Making the post more compatible for Mastodon by:
1157 // - Making it a note and not an article (no title)
1158 // - Moving the title into the "summary" field that is used as a "content warning"
1161 $mail['body'] = '[abstract]' . $mail['title'] . "[/abstract]\n" . $mail['body'];
1162 $mail['title'] = '';
1165 $mail['content-warning'] = '';
1166 $mail['author-link'] = $mail['owner-link'] = $mail['from-url'];
1167 $mail['owner-id'] = $mail['author-id'];
1168 $mail['allow_cid'] = '<'.$mail['contact-id'].'>';
1169 $mail['allow_gid'] = '';
1170 $mail['deny_cid'] = '';
1171 $mail['deny_gid'] = '';
1172 $mail['private'] = Item::PRIVATE;
1173 $mail['deleted'] = false;
1174 $mail['edited'] = $mail['created'];
1175 $mail['plink'] = DI::baseUrl() . '/message/' . $mail['id'];
1176 $mail['parent-uri'] = $reply['uri'];
1177 $mail['parent-uri-id'] = $reply['uri-id'];
1178 $mail['parent-author-id'] = Contact::getIdForURL($reply['from-url'], 0, false);
1179 $mail['gravity'] = ($mail['reply'] ? Item::GRAVITY_COMMENT: Item::GRAVITY_PARENT);
1180 $mail['event-type'] = '';
1181 $mail['language'] = '';
1182 $mail['parent'] = 0;
1188 * Creates an activity array for a given mail id
1190 * @param integer $mail_id
1191 * @param boolean $object_mode Is the activity item is used inside another object?
1193 * @return array of activity
1194 * @throws \Exception
1196 public static function createActivityFromMail(int $mail_id, bool $object_mode = false): array
1198 $mail = self::getItemArrayFromMail($mail_id);
1202 $object = self::createNote($mail);
1204 if (!$object_mode) {
1205 $data = ['@context' => ActivityPub::CONTEXT];
1210 $data['id'] = $mail['uri'] . '/Create';
1211 $data['type'] = 'Create';
1212 $data['actor'] = $mail['author-link'];
1213 $data['published'] = DateTimeFormat::utc($mail['created'] . '+00:00', DateTimeFormat::ATOM);
1214 $data['instrument'] = self::getService();
1215 $data = array_merge($data, self::createPermissionBlockForItem($mail, true));
1217 if (empty($data['to']) && !empty($data['cc'])) {
1218 $data['to'] = $data['cc'];
1221 if (empty($data['to']) && !empty($data['bcc'])) {
1222 $data['to'] = $data['bcc'];
1226 unset($data['bcc']);
1227 unset($data['audience']);
1229 $object['to'] = $data['to'];
1230 $object['tag'] = [['type' => 'Mention', 'href' => $object['to'][0], 'name' => '']];
1232 unset($object['cc']);
1233 unset($object['bcc']);
1234 unset($object['audience']);
1236 $data['directMessage'] = true;
1238 $data['object'] = $object;
1240 $owner = User::getOwnerDataById($mail['uid']);
1242 if (!$object_mode && !empty($owner)) {
1243 return LDSignature::sign($data, $owner);
1250 * Returns the activity type of a given item
1252 * @param array $item Item array
1253 * @return string with activity type
1254 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1255 * @throws \ImagickException
1257 private static function getTypeOfItem(array $item): string
1261 // Only check for a reshare, if it is a real reshare and no quoted reshare
1262 if (strpos($item['body'], '[share') === 0) {
1263 $announce = self::getAnnounceArray($item);
1264 $reshared = !empty($announce);
1269 } elseif ($item['verb'] == Activity::POST) {
1270 if ($item['created'] == $item['edited']) {
1275 } elseif ($item['verb'] == Activity::LIKE) {
1277 } elseif ($item['verb'] == Activity::DISLIKE) {
1279 } elseif ($item['verb'] == Activity::ATTEND) {
1281 } elseif ($item['verb'] == Activity::ATTENDNO) {
1283 } elseif ($item['verb'] == Activity::ATTENDMAYBE) {
1284 $type = 'TentativeAccept';
1285 } elseif ($item['verb'] == Activity::FOLLOW) {
1287 } elseif ($item['verb'] == Activity::TAG) {
1289 } elseif ($item['verb'] == Activity::ANNOUNCE) {
1299 * Creates the activity or fetches it from the cache
1301 * @param integer $item_id Item id
1302 * @param boolean $force Force new cache entry
1303 * @param boolean $object_mode true = Create the object, false = create the activity with the object
1304 * @param boolean $announce_activity true = the announced object is the activity, false = we announce the object link
1305 * @return array|false activity or false on failure
1306 * @throws \Exception
1308 public static function createCachedActivityFromItem(int $item_id, bool $force = false, bool $object_mode = false, $announce_activity = false)
1310 $cachekey = 'APDelivery:createActivity:' . $item_id . ':' . (int)$object_mode . ':' . (int)$announce_activity;
1313 $data = DI::cache()->get($cachekey);
1314 if (!is_null($data)) {
1319 $data = self::createActivityFromItem($item_id, $object_mode, false, $announce_activity);
1321 DI::cache()->set($cachekey, $data, Duration::QUARTER_HOUR);
1326 * Creates an activity array for a given item id
1328 * @param integer $item_id
1329 * @param boolean $object_mode true = Create the object, false = create the activity with the object
1330 * @param boolean $api_mode true = used for the API
1331 * @param boolean $announce_activity true = the announced object is the activity, false = we announce the object link
1332 * @return false|array
1333 * @throws \Exception
1335 public static function createActivityFromItem(int $item_id, bool $object_mode = false, $api_mode = false, $announce_activity = false)
1337 $condition = ['id' => $item_id];
1339 $condition['parent-network'] = Protocol::NATIVE_SUPPORT;
1341 Logger::info('Fetching activity', $condition);
1342 $item = Post::selectFirst(Item::DELIVER_FIELDLIST, $condition);
1343 if (!DBA::isResult($item)) {
1346 return self::createActivityFromArray($item, $object_mode, $api_mode, $announce_activity);
1350 * Creates an activity array for a given URI-Id and uid
1352 * @param integer $uri_id
1353 * @param integer $uid
1354 * @param boolean $object_mode true = Create the object, false = create the activity with the object
1355 * @param boolean $api_mode true = used for the API
1356 * @param boolean $announce_activity true = the announced object is the activity, false = we announce the object link
1357 * @return false|array
1358 * @throws \Exception
1360 public static function createActivityFromUriId(int $uri_id, int $uid, bool $object_mode = false, $api_mode = false, $announce_activity = false)
1362 $condition = ['uri-id' => $uri_id, 'uid' => [0, $uid]];
1364 $condition['parent-network'] = Protocol::NATIVE_SUPPORT;
1366 Logger::info('Fetching activity', $condition);
1367 $item = Post::selectFirst(Item::DELIVER_FIELDLIST, $condition, ['order' => ['uid' => true]]);
1368 if (!DBA::isResult($item)) {
1372 return self::createActivityFromArray($item, $object_mode, $api_mode, $announce_activity);
1376 * Creates an activity array for a given item id
1378 * @param integer $item_id
1379 * @param boolean $object_mode true = Create the object, false = create the activity with the object
1380 * @param boolean $api_mode true = used for the API
1381 * @param boolean $announce_activity true = the announced object is the activity, false = we announce the object link
1382 * @return false|array
1383 * @throws \Exception
1385 private static function createActivityFromArray(array $item, bool $object_mode = false, $api_mode = false, $announce_activity = false)
1387 if (!$api_mode && !$item['deleted'] && $item['network'] == Protocol::ACTIVITYPUB) {
1388 $data = Post\Activity::getByURIId($item['uri-id']);
1389 if (!$item['origin'] && !empty($data)) {
1390 if (!$object_mode) {
1391 Logger::info('Return stored conversation', ['item' => $item['id']]);
1393 } elseif (!empty($data['object'])) {
1394 Logger::info('Return stored conversation object', ['item' => $item['id']]);
1395 return $data['object'];
1400 if (!$api_mode && !$item['origin']) {
1401 Logger::debug('Post is not ours and is not stored', ['id' => $item['id'], 'uri-id' => $item['uri-id']]);
1405 $type = self::getTypeOfItem($item);
1407 if (!$object_mode) {
1408 $data = ['@context' => $context ?? ActivityPub::CONTEXT];
1410 if ($item['deleted'] && ($item['gravity'] == Item::GRAVITY_ACTIVITY)) {
1412 } elseif ($item['deleted']) {
1419 if ($type == 'Delete') {
1420 $data['id'] = Item::newURI($item['guid']) . '/' . $type;;
1421 } elseif (($item['gravity'] == Item::GRAVITY_ACTIVITY) && ($type != 'Undo')) {
1422 $data['id'] = $item['uri'];
1424 $data['id'] = $item['uri'] . '/' . $type;
1427 $data['type'] = $type;
1429 if (($type != 'Announce') || ($item['gravity'] != Item::GRAVITY_PARENT)) {
1430 $link = $item['author-link'];
1431 $id = $item['author-id'];
1433 $link = $item['owner-link'];
1434 $id = $item['owner-id'];
1438 $data['actor'] = self::getActorArrayByCid($id);
1440 $data['actor'] = $link;
1443 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1445 $data['instrument'] = self::getService();
1447 $data = array_merge($data, self::createPermissionBlockForItem($item, false));
1449 if (in_array($data['type'], ['Create', 'Update', 'Delete'])) {
1450 $data['object'] = self::createNote($item, $api_mode);
1451 } elseif ($data['type'] == 'Add') {
1452 $data = self::createAddTag($item, $data);
1453 } elseif ($data['type'] == 'Announce') {
1454 if ($item['verb'] == ACTIVITY::ANNOUNCE) {
1455 if ($announce_activity) {
1456 $anounced_item = Post::selectFirst(['uid'], ['uri-id' => $item['thr-parent-id'], 'origin' => true]);
1457 $data['object'] = self::createActivityFromUriId($item['thr-parent-id'], $anounced_item['uid'] ?? 0);
1458 unset($data['object']['@context']);
1460 $data['object'] = $item['thr-parent'];
1463 $data = self::createAnnounce($item, $data, $api_mode);
1465 } elseif ($data['type'] == 'Follow') {
1466 $data['object'] = $item['parent-uri'];
1467 } elseif ($data['type'] == 'Undo') {
1468 $data['object'] = self::createActivityFromItem($item['id'], true);
1470 $data['diaspora:guid'] = $item['guid'];
1471 if (!empty($item['signed_text'])) {
1472 $data['diaspora:like'] = $item['signed_text'];
1474 $data['object'] = $item['thr-parent'];
1477 if (!empty($item['contact-uid'])) {
1478 $uid = $item['contact-uid'];
1480 $uid = $item['uid'];
1483 Logger::info('Fetched activity', ['item' => $item['id'], 'uid' => $uid]);
1485 // We only sign our own activities
1486 if (!$api_mode && !$object_mode && $item['origin']) {
1487 $owner = User::getOwnerDataById($uid);
1488 return LDSignature::sign($data, $owner);
1493 /// @todo Create "conversation" entry
1497 * Creates a location entry for a given item array
1499 * @param array $item Item array
1500 * @return array with location array
1502 private static function createLocation(array $item): array
1504 $location = ['type' => 'Place'];
1506 if (!empty($item['location'])) {
1507 $location['name'] = $item['location'];
1512 if (empty($item['coord'])) {
1513 $coord = Map::getCoordinates($item['location']);
1515 $coords = explode(' ', $item['coord']);
1516 if (count($coords) == 2) {
1517 $coord = ['lat' => $coords[0], 'lon' => $coords[1]];
1521 if (!empty($coord['lat']) && !empty($coord['lon'])) {
1522 $location['latitude'] = $coord['lat'];
1523 $location['longitude'] = $coord['lon'];
1530 * Appends emoji tags to a tag array according to the tags used.
1532 * @param array $tags Tag array
1533 * @param string $text Text containing tags like :tag:
1534 * @return string normalized text
1536 private static function addEmojiTags(array &$tags, string $text): string
1538 $emojis = Smilies::extractUsedSmilies($text, $normalized);
1539 foreach ($emojis as $name => $url) {
1553 * Returns a tag array for a given item array
1555 * @param array $item Item array
1556 * @param string $quote_url Url of the attached quote link
1557 * @return array of tags
1558 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1560 private static function createTagList(array $item, string $quote_url): array
1564 $terms = Tag::getByURIId($item['uri-id'], [Tag::HASHTAG, Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
1565 foreach ($terms as $term) {
1566 if ($term['type'] == Tag::HASHTAG) {
1567 $url = DI::baseUrl() . '/search?tag=' . urlencode($term['name']);
1568 $tags[] = ['type' => 'Hashtag', 'href' => $url, 'name' => '#' . $term['name']];
1570 $contact = Contact::getByURL($term['url'], false, ['addr']);
1571 if (empty($contact)) {
1574 if (!empty($contact['addr'])) {
1575 $mention = '@' . $contact['addr'];
1577 $mention = '@' . $term['url'];
1580 $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
1584 $announce = self::getAnnounceArray($item);
1585 // Mention the original author upon commented reshares
1586 if (!empty($announce['comment'])) {
1587 $tags[] = ['type' => 'Mention', 'href' => $announce['actor']['url'], 'name' => '@' . $announce['actor']['addr']];
1590 // @see https://codeberg.org/fediverse/fep/src/branch/main/feps/fep-e232.md
1591 if (!empty($quote_url)) {
1592 // Currently deactivated because of compatibility issues with Pleroma
1594 // 'type' => 'Link',
1595 // 'mediaType' => 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"',
1596 // 'href' => $quote_url,
1597 // 'name' => '♲ ' . BBCode::convertForUriId($item['uri-id'], $quote_url, BBCode::ACTIVITYPUB)
1605 * Adds attachment data to the JSON document
1607 * @param array $item Data of the item that is to be posted
1609 * @return array with attachment data
1610 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1612 private static function createAttachmentList(array $item): array
1617 foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO, Post\Media::DOCUMENT, Post\Media::TORRENT]) as $attachment) {
1618 if (in_array($attachment['url'], $urls)) {
1621 $urls[] = $attachment['url'];
1623 $attach = ['type' => 'Document',
1624 'mediaType' => $attachment['mimetype'],
1625 'url' => $attachment['url'],
1626 'name' => $attachment['description']];
1628 if (!empty($attachment['height'])) {
1629 $attach['height'] = $attachment['height'];
1632 if (!empty($attachment['width'])) {
1633 $attach['width'] = $attachment['width'];
1636 if (!empty($attachment['preview'])) {
1637 $attach['image'] = $attachment['preview'];
1640 $attachments[] = $attach;
1643 return $attachments;
1647 * Callback function to replace a Friendica style mention in a mention for a summary
1649 * @param array $match Matching values for the callback
1650 * @return string Replaced mention
1651 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1653 private static function mentionAddrCallback(array $match): string
1655 if (empty($match[1])) {
1659 $data = Contact::getByURL($match[1], false, ['addr']);
1660 if (empty($data['addr'])) {
1664 return '@' . $data['addr'];
1668 * Remove image elements since they are added as attachment
1670 * @param string $body HTML code
1671 * @return string with removed images
1673 private static function removePictures(string $body): string
1675 return BBCode::performWithEscapedTags($body, ['code', 'noparse', 'nobb', 'pre'], function ($text) {
1676 // Simplify image codes
1677 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
1678 $text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $text);
1680 // Now remove local links
1681 $text = preg_replace_callback(
1682 '/\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]/Usi',
1684 // We remove the link when it is a link to a local photo page
1685 if (Photo::isLocalPage($match[1])) {
1688 // otherwise we just return the link
1689 return '[url]' . $match[1] . '[/url]';
1694 // Remove all pictures
1695 return preg_replace("/\[img\]([^\[\]]*)\[\/img\]/Usi", '', $text);
1700 * Returns if the post contains sensitive content ("nsfw")
1702 * @param integer $uri_id URI id
1703 * @return boolean Whether URI id was found
1704 * @throws \Exception
1706 private static function isSensitive(int $uri_id): bool
1708 return DBA::exists('tag-view', ['uri-id' => $uri_id, 'name' => 'nsfw', 'type' => Tag::HASHTAG]);
1712 * Creates event data
1714 * @param array $item Item array
1715 * @return array with the event data
1716 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1718 private static function createEvent(array $item): array
1721 $event['name'] = $item['event-summary'];
1722 $event['content'] = BBCode::convertForUriId($item['uri-id'], $item['event-desc'], BBCode::ACTIVITYPUB);
1723 $event['startTime'] = DateTimeFormat::utc($item['event-start'], 'c');
1725 if (!$item['event-nofinish']) {
1726 $event['endTime'] = DateTimeFormat::utc($item['event-finish'], 'c');
1729 if (!empty($item['event-location'])) {
1730 $item['location'] = $item['event-location'];
1731 $event['location'] = self::createLocation($item);
1734 // 2021.12: Backward compatibility value, all the events now "adjust" to the viewer timezone
1735 $event['dfrn:adjust'] = true;
1741 * Creates a note/article object array
1743 * @param array $item
1744 * @param bool $api_mode
1745 * @return array with the object data
1746 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1747 * @throws \ImagickException
1749 public static function createNote(array $item, bool $api_mode = false): array
1755 // We are treating posts differently when they are directed to a community.
1756 // This is done to better support Lemmy. Most of the changes should work with other systems as well.
1757 // But to not risk compatibility issues we currently perform the changes only for communities.
1758 if ($item['gravity'] == Item::GRAVITY_PARENT) {
1759 $isCommunityPost = !empty(Tag::getByURIId($item['uri-id'], [Tag::EXCLUSIVE_MENTION]));
1760 $links = Post\Media::getByURIId($item['uri-id'], [Post\Media::HTML]);
1761 if ($isCommunityPost && (count($links) == 1)) {
1762 $link = $links[0]['url'];
1765 $isCommunityPost = false;
1768 if ($item['event-type'] == 'event') {
1770 } elseif (!empty($item['title'])) {
1771 if (!$isCommunityPost || empty($link)) {
1774 // "Page" is used by Lemmy for posts that contain an external link
1781 if ($item['deleted']) {
1782 $type = 'Tombstone';
1786 $data['id'] = $item['uri'];
1787 $data['type'] = $type;
1789 if ($item['deleted']) {
1793 $data['summary'] = BBCode::toPlaintext(BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB));
1795 if ($item['uri'] != $item['thr-parent']) {
1796 $data['inReplyTo'] = $item['thr-parent'];
1798 $data['inReplyTo'] = null;
1801 $data['diaspora:guid'] = $item['guid'];
1802 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1804 if ($item['created'] != $item['edited']) {
1805 $data['updated'] = DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM);
1808 $data['url'] = $link ?? $item['plink'];
1810 $data['attributedTo'] = self::getActorArrayByCid($item['author-id']);
1812 $data['attributedTo'] = $item['author-link'];
1814 $data['sensitive'] = self::isSensitive($item['uri-id']);
1816 if (!empty($item['conversation']) && ($item['conversation'] != './')) {
1817 $data['conversation'] = $data['context'] = $item['conversation'];
1820 if (!empty($item['title'])) {
1821 $data['name'] = BBCode::toPlaintext($item['title'], false);
1824 $permission_block = self::getReceiversForUriId($item['uri-id'], false);
1826 $real_quote = false;
1828 $item = Post\Media::addHTMLAttachmentToItem($item);
1830 $body = $item['body'];
1832 if ($type == 'Note') {
1833 $body = $item['raw-body'] ?? self::removePictures($body);
1835 $body = self::addEmojiTags($emojis, $body);
1838 * @todo Improve the automated summary
1839 * This part is currently deactivated. The automated summary seems to be more
1840 * confusing than helping. But possibly we will find a better way.
1841 * So the code is left here for now as a reminder
1843 * } elseif (($type == 'Article') && empty($data['summary'])) {
1844 * $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1845 * $summary = preg_replace_callback($regexp, [self::class, 'mentionAddrCallback'], $body);
1846 * $data['summary'] = BBCode::toPlaintext(Plaintext::shorten(self::removePictures($summary), 1000));
1850 if (empty($item['uid']) || !Feature::isEnabled($item['uid'], 'explicit_mentions')) {
1851 $body = self::prependMentions($body, $item['uri-id'], $item['author-link']);
1854 if ($type == 'Event') {
1855 $data = array_merge($data, self::createEvent($item));
1857 if ($isCommunityPost) {
1858 // For community posts we remove the visible "!user@domain.tld".
1859 // This improves the look at systems like Lemmy.
1860 // Also in the future we should control the community delivery via other methods.
1861 $body = preg_replace("/!\[url\=[^\[\]]*\][^\[\]]*\[\/url\]/ism", '', $body);
1864 if ($type == 'Page') {
1865 // When we transmit "Page" posts we have to remove the attachment.
1866 // The attachment contains the link that we already transmit in the "url" field.
1867 $body = BBCode::removeAttachment($body);
1870 $body = BBCode::setMentionsToNicknames($body);
1872 if (!empty($item['quote-uri-id']) && ($item['quote-uri-id'] != $item['uri-id'])) {
1873 if (Post::exists(['uri-id' => $item['quote-uri-id'], 'network' => [Protocol::ACTIVITYPUB, Protocol::DFRN]])) {
1875 $data['quoteUrl'] = $item['quote-uri'];
1876 $body = DI::contentItem()->addShareLink($body, $item['quote-uri-id']);
1878 $body = DI::contentItem()->addSharedPost($item, $body);
1882 $data['content'] = BBCode::convertForUriId($item['uri-id'], $body, BBCode::ACTIVITYPUB);
1885 // The regular "content" field does contain a minimized HTML. This is done since systems like
1886 // Mastodon has got problems with - for example - embedded pictures.
1887 // The contentMap does contain the unmodified HTML.
1888 $language = self::getLanguage($item);
1889 if (!empty($language)) {
1890 $richbody = BBCode::setMentionsToNicknames($item['body'] ?? '');
1891 $richbody = Post\Media::removeFromEndOfBody($richbody);
1892 if (!empty($item['quote-uri-id']) && ($item['quote-uri-id'] != $item['uri-id'])) {
1894 $richbody = DI::contentItem()->addShareLink($richbody, $item['quote-uri-id']);
1896 $richbody = DI::contentItem()->addSharedPost($item, $richbody);
1899 $richbody = BBCode::replaceAttachment($richbody);
1901 $data['contentMap'][$language] = BBCode::convertForUriId($item['uri-id'], $richbody, BBCode::EXTERNAL);
1904 if (!empty($item['quote-uri-id']) && ($item['quote-uri-id'] != $item['uri-id'])) {
1905 $source = DI::contentItem()->addSharedPost($item, $item['body']);
1907 $source = $item['body'];
1910 $data['source'] = ['content' => $source, 'mediaType' => "text/bbcode"];
1912 if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
1913 $data['diaspora:comment'] = $item['signed_text'];
1916 $data['attachment'] = self::createAttachmentList($item);
1917 $data['tag'] = array_merge(self::createTagList($item, $data['quoteUrl'] ?? ''), $emojis);
1919 if (empty($data['location']) && (!empty($item['coord']) || !empty($item['location']))) {
1920 $data['location'] = self::createLocation($item);
1923 if (!empty($item['app'])) {
1924 $data['generator'] = ['type' => 'Application', 'name' => $item['app']];
1927 $data = array_merge($data, $permission_block);
1933 * Fetches the language from the post, the user or the system.
1935 * @param array $item
1936 * @return string language string
1938 private static function getLanguage(array $item): string
1940 // Try to fetch the language from the post itself
1941 if (!empty($item['language'])) {
1942 $languages = array_keys(json_decode($item['language'], true));
1943 if (!empty($languages[0])) {
1944 return DI::l10n()->toISO6391($languages[0]);
1948 // Otherwise use the user's language
1949 if (!empty($item['uid'])) {
1950 $user = DBA::selectFirst('user', ['language'], ['uid' => $item['uid']]);
1951 if (!empty($user['language'])) {
1952 return DI::l10n()->toISO6391($user['language']);
1956 // And finally just use the system language
1957 return DI::l10n()->toISO6391(DI::config()->get('system', 'language'));
1961 * Creates an an "add tag" entry
1963 * @param array $item Item array
1964 * @param array $activity activity data
1965 * @return array with activity data for adding tags
1966 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1967 * @throws \ImagickException
1969 private static function createAddTag(array $item, array $activity): array
1971 $object = XML::parseString($item['object']);
1972 $target = XML::parseString($item['target']);
1974 $activity['diaspora:guid'] = $item['guid'];
1975 $activity['actor'] = $item['author-link'];
1976 $activity['target'] = (string)$target->id;
1977 $activity['summary'] = BBCode::toPlaintext($item['body']);
1978 $activity['object'] = ['id' => (string)$object->id, 'type' => 'tag', 'name' => (string)$object->title, 'content' => (string)$object->content];
1984 * Creates an announce object entry
1986 * @param array $item Item array
1987 * @param array $activity activity data
1988 * @param bool $api_mode
1989 * @return array with activity data
1990 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1991 * @throws \ImagickException
1993 private static function createAnnounce(array $item, array $activity, bool $api_mode = false): array
1995 $orig_body = $item['body'];
1996 $announce = self::getAnnounceArray($item);
1997 if (empty($announce)) {
1998 $activity['type'] = 'Create';
1999 $activity['object'] = self::createNote($item, $api_mode);
2003 if (empty($announce['comment'])) {
2004 // Pure announce, without a quote
2005 $activity['type'] = 'Announce';
2006 $activity['object'] = $announce['object']['uri'];
2011 $activity['type'] = 'Create';
2012 $item['body'] = $announce['comment'] . "\n" . $announce['object']['plink'];
2013 $activity['object'] = self::createNote($item, $api_mode);
2015 /// @todo Finally decide how to implement this in AP. This is a possible way:
2016 $activity['object']['attachment'][] = self::createNote($announce['object']);
2018 $activity['object']['source']['content'] = $orig_body;
2023 * Return announce related data if the item is an announce
2025 * @param array $item
2026 * @return array Announcement array
2028 private static function getAnnounceArray(array $item): array
2030 $reshared = DI::contentItem()->getSharedPost($item, Item::DELIVER_FIELDLIST);
2031 if (empty($reshared)) {
2035 if (!in_array($reshared['post']['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
2039 $profile = APContact::getByURL($reshared['post']['author-link'], false);
2040 if (empty($profile)) {
2044 return ['object' => $reshared['post'], 'actor' => $profile, 'comment' => $reshared['comment']];
2048 * Checks if the provided item array is an announce
2050 * @param array $item Item array
2051 * @return boolean Whether item is an announcement
2053 public static function isAnnounce(array $item): bool
2055 if (!empty($item['verb']) && ($item['verb'] == Activity::ANNOUNCE)) {
2059 $announce = self::getAnnounceArray($item);
2060 if (empty($announce)) {
2064 return empty($announce['comment']);
2068 * Creates an activity id for a given contact id
2070 * @param integer $cid Contact ID of target
2072 * @return bool|string activity id
2074 public static function activityIDFromContact(int $cid)
2076 $contact = DBA::selectFirst('contact', ['uid', 'id', 'created'], ['id' => $cid]);
2077 if (!DBA::isResult($contact)) {
2081 $hash = hash('ripemd128', $contact['uid'].'-'.$contact['id'].'-'.$contact['created']);
2082 $uuid = substr($hash, 0, 8). '-' . substr($hash, 8, 4) . '-' . substr($hash, 12, 4) . '-' . substr($hash, 16, 4) . '-' . substr($hash, 20, 12);
2083 return DI::baseUrl() . '/activity/' . $uuid;
2087 * Transmits a contact suggestion to a given inbox
2089 * @param array $owner Sender owner-view record
2090 * @param string $inbox Target inbox
2091 * @param integer $suggestion_id Suggestion ID
2092 * @return boolean was the transmission successful?
2093 * @throws \Exception
2095 public static function sendContactSuggestion(array $owner, string $inbox, int $suggestion_id): bool
2097 $suggestion = DI::fsuggest()->selectOneById($suggestion_id);
2100 '@context' => ActivityPub::CONTEXT,
2101 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
2102 'type' => 'Announce',
2103 'actor' => $owner['url'],
2104 'object' => $suggestion->url,
2105 'content' => $suggestion->note,
2106 'instrument' => self::getService(),
2107 'to' => [ActivityPub::PUBLIC_COLLECTION],
2111 $signed = LDSignature::sign($data, $owner);
2113 Logger::info('Deliver profile deletion for user ' . $owner['uid'] . ' to ' . $inbox . ' via ActivityPub');
2114 return HTTPSignature::transmit($signed, $inbox, $owner);
2118 * Transmits a profile relocation to a given inbox
2120 * @param array $owner Sender owner-view record
2121 * @param string $inbox Target inbox
2122 * @return boolean was the transmission successful?
2123 * @throws \Exception
2125 public static function sendProfileRelocation(array $owner, string $inbox): bool
2128 '@context' => ActivityPub::CONTEXT,
2129 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
2130 'type' => 'dfrn:relocate',
2131 'actor' => $owner['url'],
2132 'object' => $owner['url'],
2133 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
2134 'instrument' => self::getService(),
2135 'to' => [ActivityPub::PUBLIC_COLLECTION],
2139 $signed = LDSignature::sign($data, $owner);
2141 Logger::info('Deliver profile relocation for user ' . $owner['uid'] . ' to ' . $inbox . ' via ActivityPub');
2142 return HTTPSignature::transmit($signed, $inbox, $owner);
2146 * Transmits a profile deletion to a given inbox
2148 * @param array $owner Sender owner-view record
2149 * @param string $inbox Target inbox
2150 * @return boolean was the transmission successful?
2151 * @throws \Exception
2153 public static function sendProfileDeletion(array $owner, string $inbox): bool
2155 if (empty($owner['uprvkey'])) {
2156 Logger::error('No private key for owner found, the deletion message cannot be processed.', ['user' => $owner['uid']]);
2160 $data = ['@context' => ActivityPub::CONTEXT,
2161 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
2163 'actor' => $owner['url'],
2164 'object' => $owner['url'],
2165 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
2166 'instrument' => self::getService(),
2167 'to' => [ActivityPub::PUBLIC_COLLECTION],
2170 $signed = LDSignature::sign($data, $owner);
2172 Logger::info('Deliver profile deletion for user ' . $owner['uid'] . ' to ' . $inbox . ' via ActivityPub');
2173 return HTTPSignature::transmit($signed, $inbox, $owner);
2177 * Transmits a profile change to a given inbox
2179 * @param array $owner Sender owner-view record
2180 * @param string $inbox Target inbox
2181 * @return boolean was the transmission successful?
2182 * @throws HTTPException\InternalServerErrorException
2183 * @throws HTTPException\NotFoundException
2184 * @throws \ImagickException
2186 public static function sendProfileUpdate(array $owner, string $inbox): bool
2188 $profile = APContact::getByURL($owner['url']);
2190 $data = ['@context' => ActivityPub::CONTEXT,
2191 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
2193 'actor' => $owner['url'],
2194 'object' => self::getProfile($owner['uid']),
2195 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
2196 'instrument' => self::getService(),
2197 'to' => [$profile['followers']],
2200 $signed = LDSignature::sign($data, $owner);
2202 Logger::info('Deliver profile update for user ' . $owner['uid'] . ' to ' . $inbox . ' via ActivityPub');
2203 return HTTPSignature::transmit($signed, $inbox, $owner);
2207 * Transmits a given activity to a target
2209 * @param string $activity Type name
2210 * @param string $target Target profile
2211 * @param integer $uid User ID
2212 * @param string $id Activity-identifier
2214 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2215 * @throws \ImagickException
2216 * @throws \Exception
2218 public static function sendActivity(string $activity, string $target, int $uid, string $id = ''): bool
2220 $profile = APContact::getByURL($target);
2221 if (empty($profile['inbox'])) {
2222 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
2226 $owner = User::getOwnerDataById($uid);
2227 if (empty($owner)) {
2228 Logger::warning('No user found for actor, aborting', ['uid' => $uid]);
2233 $id = DI::baseUrl() . '/activity/' . System::createGUID();
2237 '@context' => ActivityPub::CONTEXT,
2239 'type' => $activity,
2240 'actor' => $owner['url'],
2241 'object' => $profile['url'],
2242 'instrument' => self::getService(),
2243 'to' => [$profile['url']],
2246 Logger::info('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid);
2248 $signed = LDSignature::sign($data, $owner);
2249 return HTTPSignature::transmit($signed, $profile['inbox'], $owner);
2253 * Transmits a "follow object" activity to a target
2254 * This is a preparation for sending automated "follow" requests when receiving "Announce" messages
2256 * @param string $object Object URL
2257 * @param string $target Target profile
2258 * @param integer $uid User ID
2260 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2261 * @throws \ImagickException
2262 * @throws \Exception
2264 public static function sendFollowObject(string $object, string $target, int $uid = 0): bool
2266 $profile = APContact::getByURL($target);
2267 if (empty($profile['inbox'])) {
2268 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
2273 // We need to use some user as a sender. It doesn't care who it will send. We will use an administrator account.
2274 $admin = User::getFirstAdmin(['uid']);
2276 Logger::warning('No available admin user for transmission', ['target' => $target]);
2280 $uid = $admin['uid'];
2283 $condition = ['verb' => Activity::FOLLOW, 'uid' => 0, 'parent-uri' => $object,
2284 'author-id' => Contact::getPublicIdByUserId($uid)];
2285 if (Post::exists($condition)) {
2286 Logger::info('Follow for ' . $object . ' for user ' . $uid . ' does already exist.');
2290 $owner = User::getOwnerDataById($uid);
2293 '@context' => ActivityPub::CONTEXT,
2294 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
2296 'actor' => $owner['url'],
2297 'object' => $object,
2298 'instrument' => self::getService(),
2299 'to' => [$profile['url']],
2302 Logger::info('Sending follow ' . $object . ' to ' . $target . ' for user ' . $uid);
2304 $signed = LDSignature::sign($data, $owner);
2305 return HTTPSignature::transmit($signed, $profile['inbox'], $owner);
2309 * Transmit a message that the contact request had been accepted
2311 * @param string $target Target profile
2312 * @param string $id Object id
2313 * @param integer $uid User ID
2315 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2316 * @throws \ImagickException
2318 public static function sendContactAccept(string $target, string $id, int $uid)
2320 $profile = APContact::getByURL($target);
2321 if (empty($profile['inbox'])) {
2322 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
2326 $owner = User::getOwnerDataById($uid);
2328 Logger::notice('No user found for actor', ['uid' => $uid]);
2333 '@context' => ActivityPub::CONTEXT,
2334 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
2336 'actor' => $owner['url'],
2340 'actor' => $profile['url'],
2341 'object' => $owner['url']
2343 'instrument' => self::getService(),
2344 'to' => [$profile['url']],
2347 Logger::debug('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id);
2349 $signed = LDSignature::sign($data, $owner);
2350 HTTPSignature::transmit($signed, $profile['inbox'], $owner);
2354 * Reject a contact request or terminates the contact relation
2356 * @param string $target Target profile
2357 * @param string $objectId Object id
2358 * @param array $owner Sender owner-view record
2359 * @return bool Operation success
2360 * @throws HTTPException\InternalServerErrorException
2361 * @throws \ImagickException
2363 public static function sendContactReject(string $target, string $objectId, array $owner): bool
2365 $profile = APContact::getByURL($target);
2366 if (empty($profile['inbox'])) {
2367 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
2372 '@context' => ActivityPub::CONTEXT,
2373 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
2375 'actor' => $owner['url'],
2379 'actor' => $profile['url'],
2380 'object' => $owner['url']
2382 'instrument' => self::getService(),
2383 'to' => [$profile['url']],
2386 Logger::debug('Sending reject to ' . $target . ' for user ' . $owner['uid'] . ' with id ' . $objectId);
2388 $signed = LDSignature::sign($data, $owner);
2389 return HTTPSignature::transmit($signed, $profile['inbox'], $owner);
2393 * Transmits a message that we don't want to follow this contact anymore
2395 * @param string $target Target profile
2396 * @param integer $cid Contact id
2397 * @param array $owner Sender owner-view record
2398 * @return bool success
2399 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2400 * @throws \ImagickException
2401 * @throws \Exception
2403 public static function sendContactUndo(string $target, int $cid, array $owner): bool
2405 $profile = APContact::getByURL($target);
2406 if (empty($profile['inbox'])) {
2407 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
2411 $object_id = self::activityIDFromContact($cid);
2412 if (empty($object_id)) {
2416 $objectId = DI::baseUrl() . '/activity/' . System::createGUID();
2419 '@context' => ActivityPub::CONTEXT,
2422 'actor' => $owner['url'],
2426 'actor' => $owner['url'],
2427 'object' => $profile['url']
2429 'instrument' => self::getService(),
2430 'to' => [$profile['url']],
2433 Logger::info('Sending undo to ' . $target . ' for user ' . $owner['uid'] . ' with id ' . $objectId);
2435 $signed = LDSignature::sign($data, $owner);
2436 return HTTPSignature::transmit($signed, $profile['inbox'], $owner);
2440 * Prepends mentions (@) to $body variable
2442 * @param string $body HTML code
2444 * @param string $authorLink Author link
2445 * @return string HTML code with prepended mentions
2447 private static function prependMentions(string $body, int $uriid, string $authorLink): string
2451 foreach (Tag::getByURIId($uriid, [Tag::IMPLICIT_MENTION]) as $tag) {
2452 $profile = Contact::getByURL($tag['url'], false, ['addr', 'contact-type', 'nick']);
2453 if (!empty($profile['addr'])
2454 && $profile['contact-type'] != Contact::TYPE_COMMUNITY
2455 && !strstr($body, $profile['addr'])
2456 && !strstr($body, $tag['url'])
2457 && $tag['url'] !== $authorLink
2459 $mentions[] = '@[url=' . $tag['url'] . ']' . $profile['nick'] . '[/url]';
2463 $mentions[] = $body;
2465 return implode(' ', $mentions);