3 * @copyright Copyright (C) 2020, Friendica
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;
24 use Friendica\Content\Feature;
25 use Friendica\Content\Text\BBCode;
26 use Friendica\Content\Text\Plaintext;
27 use Friendica\Core\Cache\Duration;
28 use Friendica\Core\Logger;
29 use Friendica\Core\Protocol;
30 use Friendica\Core\System;
31 use Friendica\Database\DBA;
33 use Friendica\Model\APContact;
34 use Friendica\Model\Contact;
35 use Friendica\Model\Conversation;
36 use Friendica\Model\Item;
37 use Friendica\Model\ItemURI;
38 use Friendica\Model\Profile;
39 use Friendica\Model\Photo;
40 use Friendica\Model\Tag;
41 use Friendica\Model\User;
42 use Friendica\Protocol\Activity;
43 use Friendica\Protocol\ActivityPub;
44 use Friendica\Util\DateTimeFormat;
45 use Friendica\Util\HTTPSignature;
46 use Friendica\Util\Images;
47 use Friendica\Util\JsonLD;
48 use Friendica\Util\LDSignature;
49 use Friendica\Util\Map;
50 use Friendica\Util\Network;
51 use Friendica\Util\XML;
53 require_once 'include/api.php';
54 require_once 'mod/share.php';
57 * ActivityPub Transmitter Protocol class
65 * Collects a list of contacts of the given owner
67 * @param array $owner Owner array
68 * @param int|array $rel The relevant value(s) contact.rel should match
69 * @param string $module The name of the relevant AP endpoint module (followers|following)
70 * @param integer $page Page number
72 * @return array of owners
75 public static function getContacts($owner, $rel, $module, $page = null)
79 'uid' => $owner['uid'],
86 $condition = DBA::buildCondition($parameters);
88 $sql = "SELECT COUNT(*) as `count`
90 JOIN `apcontact` ON `apcontact`.`url` = `contact`.`url`
93 $contacts = DBA::fetchFirst($sql, ...$parameters);
95 $modulePath = '/' . $module . '/';
97 $data = ['@context' => ActivityPub::CONTEXT];
98 $data['id'] = DI::baseUrl() . $modulePath . $owner['nickname'];
99 $data['type'] = 'OrderedCollection';
100 $data['totalItems'] = $contacts['count'];
102 // When we hide our friends we will only show the pure number but don't allow more.
103 $profile = Profile::getByUID($owner['uid']);
104 if (!empty($profile['hide-friends'])) {
109 $data['first'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=1';
111 $data['type'] = 'OrderedCollectionPage';
114 $sql = "SELECT `contact`.`url`
116 JOIN `apcontact` ON `apcontact`.`url` = `contact`.`url`
120 $parameters[] = ($page - 1) * 100;
123 $contacts = DBA::p($sql, ...$parameters);
124 while ($contact = DBA::fetch($contacts)) {
125 $list[] = $contact['url'];
127 DBA::close($contacts);
130 $data['next'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=' . ($page + 1);
133 $data['partOf'] = DI::baseUrl() . $modulePath . $owner['nickname'];
135 $data['orderedItems'] = $list;
142 * Public posts for the given owner
144 * @param array $owner Owner array
145 * @param integer $page Page numbe
147 * @return array of posts
148 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
149 * @throws \ImagickException
151 public static function getOutbox($owner, $page = null)
153 $public_contact = Contact::getIdForURL($owner['url'], 0, true);
155 $condition = ['uid' => 0, 'contact-id' => $public_contact, 'author-id' => $public_contact,
156 'private' => [Item::PUBLIC, Item::UNLISTED], 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT],
157 'deleted' => false, 'visible' => true, 'moderated' => false];
158 $count = DBA::count('item', $condition);
160 $data = ['@context' => ActivityPub::CONTEXT];
161 $data['id'] = DI::baseUrl() . '/outbox/' . $owner['nickname'];
162 $data['type'] = 'OrderedCollection';
163 $data['totalItems'] = $count;
166 $data['first'] = DI::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=1';
168 $data['type'] = 'OrderedCollectionPage';
171 $condition['parent-network'] = Protocol::NATIVE_SUPPORT;
173 $items = Item::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
174 while ($item = Item::fetch($items)) {
175 $activity = self::createActivityFromItem($item['id'], true);
176 $activity['type'] = $activity['type'] == 'Update' ? 'Create' : $activity['type'];
178 // Only list "Create" activity objects here, no reshares
179 if (!empty($activity['object']) && ($activity['type'] == 'Create')) {
180 $list[] = $activity['object'];
185 $data['next'] = DI::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1);
188 $data['partOf'] = DI::baseUrl() . '/outbox/' . $owner['nickname'];
190 $data['orderedItems'] = $list;
197 * Return the service array containing information the used software and it's url
199 * @return array with service data
201 private static function getService()
203 return ['type' => 'Service',
204 'name' => FRIENDICA_PLATFORM . " '" . FRIENDICA_CODENAME . "' " . FRIENDICA_VERSION . '-' . DB_UPDATE_VERSION,
205 'url' => DI::baseUrl()->get()];
209 * Return the ActivityPub profile of the given user
211 * @param integer $uid User ID
212 * @return array with profile data
213 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
215 public static function getProfile($uid)
217 $condition = ['uid' => $uid, 'blocked' => false, 'account_expired' => false,
218 'account_removed' => false, 'verified' => true];
219 $fields = ['guid', 'nickname', 'pubkey', 'account-type', 'page-flags'];
220 $user = DBA::selectFirst('user', $fields, $condition);
221 if (!DBA::isResult($user)) {
225 $fields = ['locality', 'region', 'country-name'];
226 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid]);
227 if (!DBA::isResult($profile)) {
231 $fields = ['name', 'url', 'location', 'about', 'avatar', 'photo'];
232 $contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
233 if (!DBA::isResult($contact)) {
237 $data = ['@context' => ActivityPub::CONTEXT];
238 $data['id'] = $contact['url'];
239 $data['diaspora:guid'] = $user['guid'];
240 $data['type'] = ActivityPub::ACCOUNT_TYPES[$user['account-type']];
241 $data['following'] = DI::baseUrl() . '/following/' . $user['nickname'];
242 $data['followers'] = DI::baseUrl() . '/followers/' . $user['nickname'];
243 $data['inbox'] = DI::baseUrl() . '/inbox/' . $user['nickname'];
244 $data['outbox'] = DI::baseUrl() . '/outbox/' . $user['nickname'];
245 $data['preferredUsername'] = $user['nickname'];
246 $data['name'] = $contact['name'];
247 $data['vcard:hasAddress'] = ['@type' => 'vcard:Home', 'vcard:country-name' => $profile['country-name'],
248 'vcard:region' => $profile['region'], 'vcard:locality' => $profile['locality']];
249 $data['summary'] = BBCode::convert($contact['about'], false);
250 $data['url'] = $contact['url'];
251 $data['manuallyApprovesFollowers'] = in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL, User::PAGE_FLAGS_PRVGROUP]);
252 $data['publicKey'] = ['id' => $contact['url'] . '#main-key',
253 'owner' => $contact['url'],
254 'publicKeyPem' => $user['pubkey']];
255 $data['endpoints'] = ['sharedInbox' => DI::baseUrl() . '/inbox'];
256 $data['icon'] = ['type' => 'Image',
257 'url' => $contact['photo']];
259 $data['generator'] = self::getService();
261 // tags: https://kitty.town/@inmysocks/100656097926961126.json
266 * @param string $username
268 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
270 public static function getDeletedUser($username)
273 '@context' => ActivityPub::CONTEXT,
274 'id' => DI::baseUrl() . '/profile/' . $username,
275 'type' => 'Tombstone',
276 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
277 'updated' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
278 'deleted' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
283 * Returns an array with permissions of a given item array
287 * @return array with permissions
288 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
289 * @throws \ImagickException
291 private static function fetchPermissionBlockFromConversation($item)
293 if (empty($item['thr-parent'])) {
297 $condition = ['item-uri' => $item['thr-parent'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
298 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
299 if (!DBA::isResult($conversation)) {
303 $activity = json_decode($conversation['source'], true);
305 $actor = JsonLD::fetchElement($activity, 'actor', 'id');
306 $profile = APContact::getByURL($actor);
308 $item_profile = APContact::getByURL($item['author-link']);
309 $exclude[] = $item['author-link'];
311 if ($item['gravity'] == GRAVITY_PARENT) {
312 $exclude[] = $item['owner-link'];
315 $permissions['to'][] = $actor;
317 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
318 if (empty($activity[$element])) {
321 if (is_string($activity[$element])) {
322 $activity[$element] = [$activity[$element]];
325 foreach ($activity[$element] as $receiver) {
326 if (empty($receiver)) {
330 if (!empty($profile['followers']) && $receiver == $profile['followers'] && !empty($item_profile['followers'])) {
331 $permissions[$element][] = $item_profile['followers'];
332 } elseif (!in_array($receiver, $exclude)) {
333 $permissions[$element][] = $receiver;
341 * Creates an array of permissions from an item thread
343 * @param array $item Item array
344 * @param boolean $blindcopy addressing via "bcc" or "cc"?
345 * @param integer $last_id Last item id for adding receivers
346 * @param boolean $forum_mode "true" means that we are sending content to a forum
348 * @return array with permission data
349 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
350 * @throws \ImagickException
352 private static function createPermissionBlockForItem($item, $blindcopy, $last_id = 0, $forum_mode = false)
355 $last_id = $item['id'];
360 // Check if we should always deliver our stuff via BCC
361 if (!empty($item['uid'])) {
362 $profile = Profile::getByUID($item['uid']);
363 if (!empty($profile)) {
364 $always_bcc = $profile['hide-friends'];
368 if (DI::config()->get('system', 'ap_always_bcc')) {
372 if (self::isAnnounce($item) || DI::config()->get('debug', 'total_ap_delivery')) {
373 // Will be activated in a later step
374 $networks = Protocol::FEDERATED;
376 // For now only send to these contacts:
377 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
380 $data = ['to' => [], 'cc' => [], 'bcc' => []];
382 if ($item['gravity'] == GRAVITY_PARENT) {
383 $actor_profile = APContact::getByURL($item['owner-link']);
385 $actor_profile = APContact::getByURL($item['author-link']);
388 $terms = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
390 if ($item['private'] != Item::PRIVATE) {
391 // Directly mention the original author upon a quoted reshare.
392 // Else just ensure that the original author receives the reshare.
393 $announce = self::getAnnounceArray($item);
394 if (!empty($announce['comment'])) {
395 $data['to'][] = $announce['actor']['url'];
396 } elseif (!empty($announce)) {
397 $data['cc'][] = $announce['actor']['url'];
400 $data = array_merge($data, self::fetchPermissionBlockFromConversation($item));
402 // Check if the item is completely public or unlisted
403 if ($item['private'] == Item::PUBLIC) {
404 $data['to'][] = ActivityPub::PUBLIC_COLLECTION;
406 $data['cc'][] = ActivityPub::PUBLIC_COLLECTION;
409 foreach ($terms as $term) {
410 $profile = APContact::getByURL($term['url'], false);
411 if (!empty($profile)) {
412 $data['to'][] = $profile['url'];
416 $receiver_list = Item::enumeratePermissions($item, true);
418 foreach ($terms as $term) {
419 $cid = Contact::getIdForURL($term['url'], $item['uid']);
420 if (!empty($cid) && in_array($cid, $receiver_list)) {
421 $contact = DBA::selectFirst('contact', ['url', 'network', 'protocol'], ['id' => $cid]);
422 if (!DBA::isResult($contact) || (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB))) {
426 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
427 $data['to'][] = $profile['url'];
432 foreach ($receiver_list as $receiver) {
433 $contact = DBA::selectFirst('contact', ['url', 'hidden', 'network', 'protocol'], ['id' => $receiver]);
434 if (!DBA::isResult($contact) || (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB))) {
438 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
439 if ($contact['hidden'] || $always_bcc) {
440 $data['bcc'][] = $profile['url'];
442 $data['cc'][] = $profile['url'];
448 if (!empty($item['parent'])) {
449 $parents = Item::select(['id', 'author-link', 'owner-link', 'gravity', 'uri'], ['parent' => $item['parent']]);
450 while ($parent = Item::fetch($parents)) {
451 if ($parent['gravity'] == GRAVITY_PARENT) {
452 $profile = APContact::getByURL($parent['owner-link'], false);
453 if (!empty($profile)) {
454 if ($item['gravity'] != GRAVITY_PARENT) {
455 // Comments to forums are directed to the forum
456 // But comments to forums aren't directed to the followers collection
457 if ($profile['type'] == 'Group') {
458 $data['to'][] = $profile['url'];
460 $data['cc'][] = $profile['url'];
461 if (($item['private'] != Item::PRIVATE) && !empty($actor_profile['followers'])) {
462 $data['cc'][] = $actor_profile['followers'];
466 // Public thread parent post always are directed to the followers
467 if (($item['private'] != Item::PRIVATE) && !$forum_mode) {
468 $data['cc'][] = $actor_profile['followers'];
474 // Don't include data from future posts
475 if ($parent['id'] >= $last_id) {
479 $profile = APContact::getByURL($parent['author-link'], false);
480 if (!empty($profile)) {
481 if (($profile['type'] == 'Group') || ($parent['uri'] == $item['thr-parent'])) {
482 $data['to'][] = $profile['url'];
484 $data['cc'][] = $profile['url'];
488 DBA::close($parents);
491 $data['to'] = array_unique($data['to']);
492 $data['cc'] = array_unique($data['cc']);
493 $data['bcc'] = array_unique($data['bcc']);
495 if (($key = array_search($item['author-link'], $data['to'])) !== false) {
496 unset($data['to'][$key]);
499 if (($key = array_search($item['author-link'], $data['cc'])) !== false) {
500 unset($data['cc'][$key]);
503 if (($key = array_search($item['author-link'], $data['bcc'])) !== false) {
504 unset($data['bcc'][$key]);
507 foreach ($data['to'] as $to) {
508 if (($key = array_search($to, $data['cc'])) !== false) {
509 unset($data['cc'][$key]);
512 if (($key = array_search($to, $data['bcc'])) !== false) {
513 unset($data['bcc'][$key]);
517 foreach ($data['cc'] as $cc) {
518 if (($key = array_search($cc, $data['bcc'])) !== false) {
519 unset($data['bcc'][$key]);
523 $receivers = ['to' => array_values($data['to']), 'cc' => array_values($data['cc']), 'bcc' => array_values($data['bcc'])];
526 unset($receivers['bcc']);
533 * Check if an inbox is archived
535 * @param string $url Inbox url
537 * @return boolean "true" if inbox is archived
539 private static function archivedInbox($url)
541 return DBA::exists('inbox-status', ['url' => $url, 'archive' => true]);
545 * Fetches a list of inboxes of followers of a given user
547 * @param integer $uid User ID
548 * @param boolean $personal fetch personal inboxes
550 * @return array of follower inboxes
551 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
552 * @throws \ImagickException
554 public static function fetchTargetInboxesforUser($uid, $personal = false)
558 if (DI::config()->get('debug', 'total_ap_delivery')) {
559 // Will be activated in a later step
560 $networks = Protocol::FEDERATED;
562 // For now only send to these contacts:
563 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
566 $condition = ['uid' => $uid, 'archive' => false, 'pending' => false];
569 $condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
572 $contacts = DBA::select('contact', ['url', 'network', 'protocol'], $condition);
573 while ($contact = DBA::fetch($contacts)) {
574 if (Contact::isLocal($contact['url'])) {
578 if (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB)) {
582 if (Network::isUrlBlocked($contact['url'])) {
586 $profile = APContact::getByURL($contact['url'], false);
587 if (!empty($profile)) {
588 if (empty($profile['sharedinbox']) || $personal) {
589 $target = $profile['inbox'];
591 $target = $profile['sharedinbox'];
593 if (!self::archivedInbox($target)) {
594 $inboxes[$target] = $target;
598 DBA::close($contacts);
604 * Fetches an array of inboxes for the given item and user
606 * @param array $item Item array
607 * @param integer $uid User ID
608 * @param boolean $personal fetch personal inboxes
609 * @param integer $last_id Last item id for adding receivers
610 * @param boolean $forum_mode "true" means that we are sending content to a forum
611 * @return array with inboxes
612 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
613 * @throws \ImagickException
615 public static function fetchTargetInboxes($item, $uid, $personal = false, $last_id = 0, $forum_mode = false)
617 $permissions = self::createPermissionBlockForItem($item, true, $last_id, $forum_mode);
618 if (empty($permissions)) {
624 if ($item['gravity'] == GRAVITY_ACTIVITY) {
625 $item_profile = APContact::getByURL($item['author-link'], false);
627 $item_profile = APContact::getByURL($item['owner-link'], false);
630 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
631 if (empty($permissions[$element])) {
635 $blindcopy = in_array($element, ['bto', 'bcc']);
637 foreach ($permissions[$element] as $receiver) {
638 if (empty($receiver) || Network::isUrlBlocked($receiver)) {
642 if ($item_profile && $receiver == $item_profile['followers']) {
643 $inboxes = array_merge($inboxes, self::fetchTargetInboxesforUser($uid, $personal));
645 if (Contact::isLocal($receiver)) {
649 $profile = APContact::getByURL($receiver, false);
650 if (!empty($profile)) {
651 if (empty($profile['sharedinbox']) || $personal || $blindcopy) {
652 $target = $profile['inbox'];
654 $target = $profile['sharedinbox'];
656 if (!self::archivedInbox($target)) {
657 $inboxes[$target] = $target;
668 * Creates an array in the structure of the item table for a given mail id
670 * @param integer $mail_id
675 public static function ItemArrayFromMail($mail_id)
677 $mail = DBA::selectFirst('mail', [], ['id' => $mail_id]);
678 if (!DBA::isResult($mail)) {
682 $mail['uri-id'] = ItemURI::insert(['uri' => $mail['uri'], 'guid' => $mail['guid']]);
684 $reply = DBA::selectFirst('mail', ['uri'], ['parent-uri' => $mail['parent-uri'], 'reply' => false]);
686 // Making the post more compatible for Mastodon by:
687 // - Making it a note and not an article (no title)
688 // - Moving the title into the "summary" field that is used as a "content warning"
689 $mail['body'] = '[abstract]' . $mail['title'] . "[/abstract]\n" . $mail['body'];
692 $mail['author-link'] = $mail['owner-link'] = $mail['from-url'];
693 $mail['allow_cid'] = '<'.$mail['contact-id'].'>';
694 $mail['allow_gid'] = '';
695 $mail['deny_cid'] = '';
696 $mail['deny_gid'] = '';
697 $mail['private'] = true;
698 $mail['deleted'] = false;
699 $mail['edited'] = $mail['created'];
700 $mail['plink'] = $mail['uri'];
701 $mail['thr-parent'] = $reply['uri'];
702 $mail['gravity'] = ($mail['reply'] ? GRAVITY_COMMENT: GRAVITY_PARENT);
704 $mail['event-type'] = '';
705 $mail['attach'] = '';
713 * Creates an activity array for a given mail id
715 * @param integer $mail_id
716 * @param boolean $object_mode Is the activity item is used inside another object?
718 * @return array of activity
721 public static function createActivityFromMail($mail_id, $object_mode = false)
723 $mail = self::ItemArrayFromMail($mail_id);
724 $object = self::createNote($mail);
727 $data = ['@context' => ActivityPub::CONTEXT];
732 $data['id'] = $mail['uri'] . '/Create';
733 $data['type'] = 'Create';
734 $data['actor'] = $mail['author-link'];
735 $data['published'] = DateTimeFormat::utc($mail['created'] . '+00:00', DateTimeFormat::ATOM);
736 $data['instrument'] = self::getService();
737 $data = array_merge($data, self::createPermissionBlockForItem($mail, true));
739 if (empty($data['to']) && !empty($data['cc'])) {
740 $data['to'] = $data['cc'];
743 if (empty($data['to']) && !empty($data['bcc'])) {
744 $data['to'] = $data['bcc'];
750 $object['to'] = $data['to'];
751 $object['tag'] = [['type' => 'Mention', 'href' => $object['to'][0], 'name' => '']];
753 unset($object['cc']);
754 unset($object['bcc']);
756 $data['directMessage'] = true;
758 $data['object'] = $object;
760 $owner = User::getOwnerDataById($mail['uid']);
762 if (!$object_mode && !empty($owner)) {
763 return LDSignature::sign($data, $owner);
770 * Returns the activity type of a given item
774 * @return string with activity type
775 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
776 * @throws \ImagickException
778 private static function getTypeOfItem($item)
782 // Only check for a reshare, if it is a real reshare and no quoted reshare
783 if (strpos($item['body'], "[share") === 0) {
784 $announce = self::getAnnounceArray($item);
785 $reshared = !empty($announce);
790 } elseif ($item['verb'] == Activity::POST) {
791 if ($item['created'] == $item['edited']) {
796 } elseif ($item['verb'] == Activity::LIKE) {
798 } elseif ($item['verb'] == Activity::DISLIKE) {
800 } elseif ($item['verb'] == Activity::ATTEND) {
802 } elseif ($item['verb'] == Activity::ATTENDNO) {
804 } elseif ($item['verb'] == Activity::ATTENDMAYBE) {
805 $type = 'TentativeAccept';
806 } elseif ($item['verb'] == Activity::FOLLOW) {
808 } elseif ($item['verb'] == Activity::TAG) {
818 * Creates the activity or fetches it from the cache
820 * @param integer $item_id
821 * @param boolean $force Force new cache entry
823 * @return array with the activity
826 public static function createCachedActivityFromItem($item_id, $force = false)
828 $cachekey = 'APDelivery:createActivity:' . $item_id;
831 $data = DI::cache()->get($cachekey);
832 if (!is_null($data)) {
837 $data = ActivityPub\Transmitter::createActivityFromItem($item_id);
839 DI::cache()->set($cachekey, $data, Duration::QUARTER_HOUR);
844 * Creates an activity array for a given item id
846 * @param integer $item_id
847 * @param boolean $object_mode Is the activity item is used inside another object?
849 * @return array of activity
852 public static function createActivityFromItem($item_id, $object_mode = false)
854 $item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
856 if (!DBA::isResult($item)) {
860 if ($item['wall'] && ($item['uri'] == $item['parent-uri'])) {
861 $owner = User::getOwnerDataById($item['uid']);
862 if (($owner['account-type'] == User::ACCOUNT_TYPE_COMMUNITY) && ($item['author-link'] != $owner['url'])) {
865 // Disguise forum posts as reshares. Will later be converted to a real announce
866 $item['body'] = BBCode::getShareOpeningTag($item['author-name'], $item['author-link'], $item['author-avatar'],
867 $item['guid'], $item['created'], $item['plink']) . $item['body'] . '[/share]';
872 $condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
873 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
874 if (DBA::isResult($conversation)) {
875 $data = json_decode($conversation['source'], true);
881 $type = self::getTypeOfItem($item);
885 $data = ['@context' => ActivityPub::CONTEXT];
887 if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) {
889 } elseif ($item['deleted']) {
896 $data['id'] = $item['uri'] . '/' . $type;
897 $data['type'] = $type;
899 if (Item::isForumPost($item) && ($type != 'Announce')) {
900 $data['actor'] = $item['author-link'];
902 $data['actor'] = $item['owner-link'];
905 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
907 $data['instrument'] = self::getService();
909 $data = array_merge($data, self::createPermissionBlockForItem($item, false));
911 if (in_array($data['type'], ['Create', 'Update', 'Delete'])) {
912 $data['object'] = self::createNote($item);
913 } elseif ($data['type'] == 'Add') {
914 $data = self::createAddTag($item, $data);
915 } elseif ($data['type'] == 'Announce') {
916 $data = self::createAnnounce($item, $data);
917 } elseif ($data['type'] == 'Follow') {
918 $data['object'] = $item['parent-uri'];
919 } elseif ($data['type'] == 'Undo') {
920 $data['object'] = self::createActivityFromItem($item_id, true);
922 $data['diaspora:guid'] = $item['guid'];
923 if (!empty($item['signed_text'])) {
924 $data['diaspora:like'] = $item['signed_text'];
926 $data['object'] = $item['thr-parent'];
929 if (!empty($item['contact-uid'])) {
930 $uid = $item['contact-uid'];
935 $owner = User::getOwnerDataById($uid);
937 if (!$object_mode && !empty($owner)) {
938 return LDSignature::sign($data, $owner);
943 /// @todo Create "conversation" entry
947 * Creates a location entry for a given item array
951 * @return array with location array
953 private static function createLocation($item)
955 $location = ['type' => 'Place'];
957 if (!empty($item['location'])) {
958 $location['name'] = $item['location'];
963 if (empty($item['coord'])) {
964 $coord = Map::getCoordinates($item['location']);
966 $coords = explode(' ', $item['coord']);
967 if (count($coords) == 2) {
968 $coord = ['lat' => $coords[0], 'lon' => $coords[1]];
972 if (!empty($coord['lat']) && !empty($coord['lon'])) {
973 $location['latitude'] = $coord['lat'];
974 $location['longitude'] = $coord['lon'];
981 * Returns a tag array for a given item array
985 * @return array of tags
986 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
988 private static function createTagList($item)
992 $terms = Tag::getByURIId($item['uri-id'], [Tag::HASHTAG, Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
993 foreach ($terms as $term) {
994 if ($term['type'] == Tag::HASHTAG) {
995 $url = DI::baseUrl() . '/search?tag=' . urlencode($term['name']);
996 $tags[] = ['type' => 'Hashtag', 'href' => $url, 'name' => '#' . $term['name']];
998 $contact = Contact::getDetailsByURL($term['url']);
999 if (!empty($contact['addr'])) {
1000 $mention = '@' . $contact['addr'];
1002 $mention = '@' . $term['url'];
1005 $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
1009 $announce = self::getAnnounceArray($item);
1010 // Mention the original author upon commented reshares
1011 if (!empty($announce['comment'])) {
1012 $tags[] = ['type' => 'Mention', 'href' => $announce['actor']['url'], 'name' => '@' . $announce['actor']['addr']];
1019 * Adds attachment data to the JSON document
1021 * @param array $item Data of the item that is to be posted
1022 * @param string $type Object type
1024 * @return array with attachment data
1025 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1027 private static function createAttachmentList($item, $type)
1031 // Currently deactivated, since it creates side effects on Mastodon and Pleroma.
1032 // It will be reactivated, once this cleared.
1034 $attach_data = BBCode::getAttachmentData($item['body']);
1035 if (!empty($attach_data['url'])) {
1036 $attachment = ['type' => 'Page',
1037 'mediaType' => 'text/html',
1038 'url' => $attach_data['url']];
1040 if (!empty($attach_data['title'])) {
1041 $attachment['name'] = $attach_data['title'];
1044 if (!empty($attach_data['description'])) {
1045 $attachment['summary'] = $attach_data['description'];
1048 if (!empty($attach_data['image'])) {
1049 $imgdata = Images::getInfoFromURLCached($attach_data['image']);
1051 $attachment['icon'] = ['type' => 'Image',
1052 'mediaType' => $imgdata['mime'],
1053 'width' => $imgdata[0],
1054 'height' => $imgdata[1],
1055 'url' => $attach_data['image']];
1059 $attachments[] = $attachment;
1062 $arr = explode('[/attach],', $item['attach']);
1064 foreach ($arr as $r) {
1066 $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|', $r, $matches);
1068 $attributes = ['type' => 'Document',
1069 'mediaType' => $matches[3],
1070 'url' => $matches[1],
1073 if (trim($matches[4]) != '') {
1074 $attributes['name'] = trim($matches[4]);
1077 $attachments[] = $attributes;
1082 if ($type != 'Note') {
1083 return $attachments;
1086 // Simplify image codes
1087 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $item['body']);
1089 // Grab all pictures without alternative descriptions and create attachments out of them
1090 if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures)) {
1091 foreach ($pictures[1] as $picture) {
1092 $imgdata = Images::getInfoFromURLCached($picture);
1094 $attachments[] = ['type' => 'Document',
1095 'mediaType' => $imgdata['mime'],
1102 // Grab all pictures with alternative description and create attachments out of them
1103 if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
1104 foreach ($pictures as $picture) {
1105 $imgdata = Images::getInfoFromURLCached($picture[1]);
1107 $attachments[] = ['type' => 'Document',
1108 'mediaType' => $imgdata['mime'],
1109 'url' => $picture[1],
1110 'name' => $picture[2]];
1115 return $attachments;
1119 * Callback function to replace a Friendica style mention in a mention that is used on AP
1121 * @param array $match Matching values for the callback
1122 * @return string Replaced mention
1123 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1125 private static function mentionCallback($match)
1127 if (empty($match[1])) {
1131 $data = Contact::getDetailsByURL($match[1]);
1132 if (empty($data['nick'])) {
1136 return '@[url=' . $data['url'] . ']' . $data['nick'] . '[/url]';
1140 * Remove image elements since they are added as attachment
1142 * @param string $body
1144 * @return string with removed images
1146 private static function removePictures($body)
1148 // Simplify image codes
1149 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
1150 $body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
1152 // Now remove local links
1153 $body = preg_replace_callback(
1154 '/\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]/Usi',
1156 // We remove the link when it is a link to a local photo page
1157 if (Photo::isLocalPage($match[1])) {
1160 // otherwise we just return the link
1161 return '[url]' . $match[1] . '[/url]';
1166 // Remove all pictures
1167 $body = preg_replace("/\[img\]([^\[\]]*)\[\/img\]/Usi", '', $body);
1173 * Fetches the "context" value for a givem item array from the "conversation" table
1175 * @param array $item
1177 * @return string with context url
1178 * @throws \Exception
1180 private static function fetchContextURLForItem($item)
1182 $conversation = DBA::selectFirst('conversation', ['conversation-href', 'conversation-uri'], ['item-uri' => $item['parent-uri']]);
1183 if (DBA::isResult($conversation) && !empty($conversation['conversation-href'])) {
1184 $context_uri = $conversation['conversation-href'];
1185 } elseif (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
1186 $context_uri = $conversation['conversation-uri'];
1188 $context_uri = $item['parent-uri'] . '#context';
1190 return $context_uri;
1194 * Returns if the post contains sensitive content ("nsfw")
1196 * @param integer $uri_id
1199 * @throws \Exception
1201 private static function isSensitive($uri_id)
1203 return DBA::exists('tag-view', ['uri-id' => $uri_id, 'name' => 'nsfw']);
1207 * Creates event data
1209 * @param array $item
1211 * @return array with the event data
1212 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1214 public static function createEvent($item)
1217 $event['name'] = $item['event-summary'];
1218 $event['content'] = BBCode::convert($item['event-desc'], false, BBCode::ACTIVITYPUB);
1219 $event['startTime'] = DateTimeFormat::utc($item['event-start'] . '+00:00', DateTimeFormat::ATOM);
1221 if (!$item['event-nofinish']) {
1222 $event['endTime'] = DateTimeFormat::utc($item['event-finish'] . '+00:00', DateTimeFormat::ATOM);
1225 if (!empty($item['event-location'])) {
1226 $item['location'] = $item['event-location'];
1227 $event['location'] = self::createLocation($item);
1234 * Creates a note/article object array
1236 * @param array $item
1238 * @return array with the object data
1239 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1240 * @throws \ImagickException
1242 public static function createNote($item)
1248 if ($item['event-type'] == 'event') {
1250 } elseif (!empty($item['title'])) {
1256 if ($item['deleted']) {
1257 $type = 'Tombstone';
1261 $data['id'] = $item['uri'];
1262 $data['type'] = $type;
1264 if ($item['deleted']) {
1268 $data['summary'] = BBCode::toPlaintext(BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB));
1270 if ($item['uri'] != $item['thr-parent']) {
1271 $data['inReplyTo'] = $item['thr-parent'];
1273 $data['inReplyTo'] = null;
1276 $data['diaspora:guid'] = $item['guid'];
1277 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1279 if ($item['created'] != $item['edited']) {
1280 $data['updated'] = DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM);
1283 $data['url'] = $item['plink'];
1284 $data['attributedTo'] = $item['author-link'];
1285 $data['sensitive'] = self::isSensitive($item['uri-id']);
1286 $data['context'] = self::fetchContextURLForItem($item);
1288 if (!empty($item['title'])) {
1289 $data['name'] = BBCode::toPlaintext($item['title'], false);
1292 $permission_block = self::createPermissionBlockForItem($item, false);
1294 $body = $item['body'];
1296 if (empty($item['uid']) || !Feature::isEnabled($item['uid'], 'explicit_mentions')) {
1297 $body = self::prependMentions($body, $item['uri-id']);
1300 if ($type == 'Note') {
1301 $body = self::removePictures($body);
1302 } elseif (($type == 'Article') && empty($data['summary'])) {
1303 $data['summary'] = BBCode::toPlaintext(Plaintext::shorten(self::removePictures($body), 1000));
1306 if ($type == 'Event') {
1307 $data = array_merge($data, self::createEvent($item));
1309 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1310 $body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
1312 $data['content'] = BBCode::convert($body, false, BBCode::ACTIVITYPUB);
1315 // The regular "content" field does contain a minimized HTML. This is done since systems like
1316 // Mastodon has got problems with - for example - embedded pictures.
1317 // The contentMap does contain the unmodified HTML.
1318 $language = self::getLanguage($item);
1319 if (!empty($language)) {
1320 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1321 $richbody = preg_replace_callback($regexp, ['self', 'mentionCallback'], $item['body']);
1322 $richbody = BBCode::removeAttachment($richbody);
1324 $data['contentMap'][$language] = BBCode::convert($richbody, false);
1327 $data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
1329 if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
1330 $data['diaspora:comment'] = $item['signed_text'];
1333 $data['attachment'] = self::createAttachmentList($item, $type);
1334 $data['tag'] = self::createTagList($item);
1336 if (empty($data['location']) && (!empty($item['coord']) || !empty($item['location']))) {
1337 $data['location'] = self::createLocation($item);
1340 if (!empty($item['app'])) {
1341 $data['generator'] = ['type' => 'Application', 'name' => $item['app']];
1344 $data = array_merge($data, $permission_block);
1350 * Fetches the language from the post, the user or the system.
1352 * @param array $item
1354 * @return string language string
1356 private static function getLanguage(array $item)
1358 // Try to fetch the language from the post itself
1359 if (!empty($item['language'])) {
1360 $languages = array_keys(json_decode($item['language'], true));
1361 if (!empty($languages[0])) {
1362 return $languages[0];
1366 // Otherwise use the user's language
1367 if (!empty($item['uid'])) {
1368 $user = DBA::selectFirst('user', ['language'], ['uid' => $item['uid']]);
1369 if (!empty($user['language'])) {
1370 return $user['language'];
1374 // And finally just use the system language
1375 return DI::config()->get('system', 'language');
1379 * Creates an an "add tag" entry
1381 * @param array $item
1382 * @param array $data activity data
1384 * @return array with activity data for adding tags
1385 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1386 * @throws \ImagickException
1388 private static function createAddTag($item, $data)
1390 $object = XML::parseString($item['object']);
1391 $target = XML::parseString($item["target"]);
1393 $data['diaspora:guid'] = $item['guid'];
1394 $data['actor'] = $item['author-link'];
1395 $data['target'] = (string)$target->id;
1396 $data['summary'] = BBCode::toPlaintext($item['body']);
1397 $data['object'] = ['id' => (string)$object->id, 'type' => 'tag', 'name' => (string)$object->title, 'content' => (string)$object->content];
1403 * Creates an announce object entry
1405 * @param array $item
1406 * @param array $data activity data
1408 * @return array with activity data
1409 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1410 * @throws \ImagickException
1412 private static function createAnnounce($item, $data)
1414 $orig_body = $item['body'];
1415 $announce = self::getAnnounceArray($item);
1416 if (empty($announce)) {
1417 $data['type'] = 'Create';
1418 $data['object'] = self::createNote($item);
1422 if (empty($announce['comment'])) {
1423 // Pure announce, without a quote
1424 $data['type'] = 'Announce';
1425 $data['object'] = $announce['object']['uri'];
1430 $data['type'] = 'Create';
1431 $item['body'] = $announce['comment'] . "\n" . $announce['object']['plink'];
1432 $data['object'] = self::createNote($item);
1434 /// @todo Finally descide how to implement this in AP. This is a possible way:
1435 $data['object']['attachment'][] = self::createNote($announce['object']);
1437 $data['object']['source']['content'] = $orig_body;
1442 * Return announce related data if the item is an annunce
1444 * @param array $item
1448 public static function getAnnounceArray($item)
1450 $reshared = Item::getShareArray($item);
1451 if (empty($reshared['guid'])) {
1455 $reshared_item = Item::selectFirst([], ['guid' => $reshared['guid']]);
1456 if (!DBA::isResult($reshared_item)) {
1460 if (!in_array($reshared_item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
1464 $profile = APContact::getByURL($reshared_item['author-link'], false);
1465 if (empty($profile)) {
1469 return ['object' => $reshared_item, 'actor' => $profile, 'comment' => $reshared['comment']];
1473 * Checks if the provided item array is an announce
1475 * @param array $item
1479 public static function isAnnounce($item)
1481 $announce = self::getAnnounceArray($item);
1482 if (empty($announce)) {
1486 return empty($announce['comment']);
1490 * Creates an activity id for a given contact id
1492 * @param integer $cid Contact ID of target
1494 * @return bool|string activity id
1496 public static function activityIDFromContact($cid)
1498 $contact = DBA::selectFirst('contact', ['uid', 'id', 'created'], ['id' => $cid]);
1499 if (!DBA::isResult($contact)) {
1503 $hash = hash('ripemd128', $contact['uid'].'-'.$contact['id'].'-'.$contact['created']);
1504 $uuid = substr($hash, 0, 8). '-' . substr($hash, 8, 4) . '-' . substr($hash, 12, 4) . '-' . substr($hash, 16, 4) . '-' . substr($hash, 20, 12);
1505 return DI::baseUrl() . '/activity/' . $uuid;
1509 * Transmits a contact suggestion to a given inbox
1511 * @param integer $uid User ID
1512 * @param string $inbox Target inbox
1513 * @param integer $suggestion_id Suggestion ID
1515 * @return boolean was the transmission successful?
1516 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1518 public static function sendContactSuggestion($uid, $inbox, $suggestion_id)
1520 $owner = User::getOwnerDataById($uid);
1522 $suggestion = DI::fsuggest()->getById($suggestion_id);
1524 $data = ['@context' => ActivityPub::CONTEXT,
1525 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1526 'type' => 'Announce',
1527 'actor' => $owner['url'],
1528 'object' => $suggestion->url,
1529 'content' => $suggestion->note,
1530 'instrument' => self::getService(),
1531 'to' => [ActivityPub::PUBLIC_COLLECTION],
1534 $signed = LDSignature::sign($data, $owner);
1536 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1537 return HTTPSignature::transmit($signed, $inbox, $uid);
1541 * Transmits a profile relocation to a given inbox
1543 * @param integer $uid User ID
1544 * @param string $inbox Target inbox
1546 * @return boolean was the transmission successful?
1547 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1549 public static function sendProfileRelocation($uid, $inbox)
1551 $owner = User::getOwnerDataById($uid);
1553 $data = ['@context' => ActivityPub::CONTEXT,
1554 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1555 'type' => 'dfrn:relocate',
1556 'actor' => $owner['url'],
1557 'object' => $owner['url'],
1558 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1559 'instrument' => self::getService(),
1560 'to' => [ActivityPub::PUBLIC_COLLECTION],
1563 $signed = LDSignature::sign($data, $owner);
1565 Logger::log('Deliver profile relocation for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1566 return HTTPSignature::transmit($signed, $inbox, $uid);
1570 * Transmits a profile deletion to a given inbox
1572 * @param integer $uid User ID
1573 * @param string $inbox Target inbox
1575 * @return boolean was the transmission successful?
1576 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1578 public static function sendProfileDeletion($uid, $inbox)
1580 $owner = User::getOwnerDataById($uid);
1582 if (empty($owner)) {
1583 Logger::error('No owner data found, the deletion message cannot be processed.', ['user' => $uid]);
1587 if (empty($owner['uprvkey'])) {
1588 Logger::error('No private key for owner found, the deletion message cannot be processed.', ['user' => $uid]);
1592 $data = ['@context' => ActivityPub::CONTEXT,
1593 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1595 'actor' => $owner['url'],
1596 'object' => $owner['url'],
1597 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1598 'instrument' => self::getService(),
1599 'to' => [ActivityPub::PUBLIC_COLLECTION],
1602 $signed = LDSignature::sign($data, $owner);
1604 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1605 return HTTPSignature::transmit($signed, $inbox, $uid);
1609 * Transmits a profile change to a given inbox
1611 * @param integer $uid User ID
1612 * @param string $inbox Target inbox
1614 * @return boolean was the transmission successful?
1615 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1616 * @throws \ImagickException
1618 public static function sendProfileUpdate($uid, $inbox)
1620 $owner = User::getOwnerDataById($uid);
1621 $profile = APContact::getByURL($owner['url']);
1623 $data = ['@context' => ActivityPub::CONTEXT,
1624 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1626 'actor' => $owner['url'],
1627 'object' => self::getProfile($uid),
1628 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1629 'instrument' => self::getService(),
1630 'to' => [$profile['followers']],
1633 $signed = LDSignature::sign($data, $owner);
1635 Logger::log('Deliver profile update for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1636 return HTTPSignature::transmit($signed, $inbox, $uid);
1640 * Transmits a given activity to a target
1642 * @param string $activity Type name
1643 * @param string $target Target profile
1644 * @param integer $uid User ID
1646 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1647 * @throws \ImagickException
1648 * @throws \Exception
1650 public static function sendActivity($activity, $target, $uid, $id = '')
1652 $profile = APContact::getByURL($target);
1653 if (empty($profile['inbox'])) {
1654 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1658 $owner = User::getOwnerDataById($uid);
1661 $id = DI::baseUrl() . '/activity/' . System::createGUID();
1664 $data = ['@context' => ActivityPub::CONTEXT,
1666 'type' => $activity,
1667 'actor' => $owner['url'],
1668 'object' => $profile['url'],
1669 'instrument' => self::getService(),
1670 'to' => [$profile['url']]];
1672 Logger::log('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1674 $signed = LDSignature::sign($data, $owner);
1675 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1679 * Transmits a "follow object" activity to a target
1680 * This is a preparation for sending automated "follow" requests when receiving "Announce" messages
1682 * @param string $object Object URL
1683 * @param string $target Target profile
1684 * @param integer $uid User ID
1686 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1687 * @throws \ImagickException
1688 * @throws \Exception
1690 public static function sendFollowObject($object, $target, $uid = 0)
1692 $profile = APContact::getByURL($target);
1693 if (empty($profile['inbox'])) {
1694 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1699 // Fetch the list of administrators
1700 $admin_mail = explode(',', str_replace(' ', '', DI::config()->get('config', 'admin_email')));
1702 // We need to use some user as a sender. It doesn't care who it will send. We will use an administrator account.
1703 $condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false, 'email' => $admin_mail];
1704 $first_user = DBA::selectFirst('user', ['uid'], $condition);
1705 $uid = $first_user['uid'];
1708 $condition = ['verb' => Activity::FOLLOW, 'uid' => 0, 'parent-uri' => $object,
1709 'author-id' => Contact::getPublicIdByUserId($uid)];
1710 if (Item::exists($condition)) {
1711 Logger::log('Follow for ' . $object . ' for user ' . $uid . ' does already exist.', Logger::DEBUG);
1715 $owner = User::getOwnerDataById($uid);
1717 $data = ['@context' => ActivityPub::CONTEXT,
1718 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1720 'actor' => $owner['url'],
1721 'object' => $object,
1722 'instrument' => self::getService(),
1723 'to' => [$profile['url']]];
1725 Logger::log('Sending follow ' . $object . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1727 $signed = LDSignature::sign($data, $owner);
1728 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1732 * Transmit a message that the contact request had been accepted
1734 * @param string $target Target profile
1736 * @param integer $uid User ID
1737 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1738 * @throws \ImagickException
1740 public static function sendContactAccept($target, $id, $uid)
1742 $profile = APContact::getByURL($target);
1743 if (empty($profile['inbox'])) {
1744 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1748 $owner = User::getOwnerDataById($uid);
1749 $data = ['@context' => ActivityPub::CONTEXT,
1750 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1752 'actor' => $owner['url'],
1754 'id' => (string)$id,
1756 'actor' => $profile['url'],
1757 'object' => $owner['url']
1759 'instrument' => self::getService(),
1760 'to' => [$profile['url']]];
1762 Logger::debug('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id);
1764 $signed = LDSignature::sign($data, $owner);
1765 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1769 * Reject a contact request or terminates the contact relation
1771 * @param string $target Target profile
1773 * @param integer $uid User ID
1774 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1775 * @throws \ImagickException
1777 public static function sendContactReject($target, $id, $uid)
1779 $profile = APContact::getByURL($target);
1780 if (empty($profile['inbox'])) {
1781 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1785 $owner = User::getOwnerDataById($uid);
1786 $data = ['@context' => ActivityPub::CONTEXT,
1787 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1789 'actor' => $owner['url'],
1791 'id' => (string)$id,
1793 'actor' => $profile['url'],
1794 'object' => $owner['url']
1796 'instrument' => self::getService(),
1797 'to' => [$profile['url']]];
1799 Logger::debug('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id);
1801 $signed = LDSignature::sign($data, $owner);
1802 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1806 * Transmits a message that we don't want to follow this contact anymore
1808 * @param string $target Target profile
1809 * @param integer $uid User ID
1810 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1811 * @throws \ImagickException
1812 * @throws \Exception
1814 public static function sendContactUndo($target, $cid, $uid)
1816 $profile = APContact::getByURL($target);
1817 if (empty($profile['inbox'])) {
1818 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1822 $object_id = self::activityIDFromContact($cid);
1823 if (empty($object_id)) {
1827 $id = DI::baseUrl() . '/activity/' . System::createGUID();
1829 $owner = User::getOwnerDataById($uid);
1830 $data = ['@context' => ActivityPub::CONTEXT,
1833 'actor' => $owner['url'],
1834 'object' => ['id' => $object_id, 'type' => 'Follow',
1835 'actor' => $owner['url'],
1836 'object' => $profile['url']],
1837 'instrument' => self::getService(),
1838 'to' => [$profile['url']]];
1840 Logger::log('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, Logger::DEBUG);
1842 $signed = LDSignature::sign($data, $owner);
1843 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1846 private static function prependMentions($body, int $uriid)
1850 foreach (Tag::getByURIId($uriid, [Tag::IMPLICIT_MENTION]) as $tag) {
1851 $profile = Contact::getDetailsByURL($tag['url']);
1852 if (!empty($profile['addr'])
1853 && $profile['contact-type'] != Contact::TYPE_COMMUNITY
1854 && !strstr($body, $profile['addr'])
1855 && !strstr($body, $tag['url'])
1857 $mentions[] = '@[url=' . $tag['url'] . ']' . $profile['nick'] . '[/url]';
1861 $mentions[] = $body;
1863 return implode(' ', $mentions);