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\GServer;
37 use Friendica\Model\Item;
38 use Friendica\Model\ItemURI;
39 use Friendica\Model\Profile;
40 use Friendica\Model\Photo;
41 use Friendica\Model\Post;
42 use Friendica\Model\Tag;
43 use Friendica\Model\User;
44 use Friendica\Protocol\Activity;
45 use Friendica\Protocol\ActivityPub;
46 use Friendica\Protocol\Relay;
47 use Friendica\Util\DateTimeFormat;
48 use Friendica\Util\HTTPSignature;
49 use Friendica\Util\JsonLD;
50 use Friendica\Util\LDSignature;
51 use Friendica\Util\Map;
52 use Friendica\Util\Network;
53 use Friendica\Util\XML;
56 * ActivityPub Transmitter Protocol class
64 * Add relay servers to the list of inboxes
66 * @param array $inboxes
67 * @return array inboxes with added relay servers
69 public static function addRelayServerInboxes(array $inboxes = [])
71 $contacts = DBA::select('apcontact', ['inbox'],
72 ["`type` = ? AND `url` IN (SELECT `url` FROM `contact` WHERE `uid` = ? AND `rel` = ?)",
73 'Application', 0, Contact::FRIEND]);
74 while ($contact = DBA::fetch($contacts)) {
75 $inboxes[$contact['inbox']] = $contact['inbox'];
77 DBA::close($contacts);
83 * Add relay servers to the list of inboxes
85 * @param array $inboxes
86 * @return array inboxes with added relay servers
88 public static function addRelayServerInboxesForItem(int $item_id, array $inboxes = [])
90 $item = Item::selectFirst(['uid'], ['id' => $item_id]);
95 $relays = Relay::getList($item_id, [], [Protocol::ACTIVITYPUB]);
100 foreach ($relays as $relay) {
101 $contact = Contact::getByURLForUser($relay['url'], $item['uid'], false, ['id']);
102 $inboxes[$relay['batch']][] = $contact['id'] ?? 0;
108 * Subscribe to a relay
110 * @param string $url Subscribe actor url
111 * @return bool success
113 public static function sendRelayFollow(string $url)
115 $contact = Contact::getByURL($url);
116 if (empty($contact)) {
120 $activity_id = ActivityPub\Transmitter::activityIDFromContact($contact['id']);
121 $success = ActivityPub\Transmitter::sendActivity('Follow', $url, 0, $activity_id);
123 DBA::update('contact', ['rel' => Contact::FRIEND], ['id' => $contact['id']]);
130 * Unsubscribe from a relay
132 * @param string $url Subscribe actor url
133 * @param bool $force Set the relay status as non follower even if unsubscribe hadn't worked
134 * @return bool success
136 public static function sendRelayUndoFollow(string $url, bool $force = false)
138 $contact = Contact::getByURL($url);
139 if (empty($contact)) {
143 $success = self::sendContactUndo($url, $contact['id'], 0);
144 if ($success || $force) {
145 DBA::update('contact', ['rel' => Contact::NOTHING], ['id' => $contact['id']]);
152 * Collects a list of contacts of the given owner
154 * @param array $owner Owner array
155 * @param int|array $rel The relevant value(s) contact.rel should match
156 * @param string $module The name of the relevant AP endpoint module (followers|following)
157 * @param integer $page Page number
159 * @return array of owners
162 public static function getContacts($owner, $rel, $module, $page = null)
166 'uid' => $owner['uid'],
174 $condition = DBA::buildCondition($parameters);
176 $sql = "SELECT COUNT(*) as `count`
178 JOIN `apcontact` ON `apcontact`.`url` = `contact`.`url`
181 $contacts = DBA::fetchFirst($sql, ...$parameters);
183 $modulePath = '/' . $module . '/';
185 $data = ['@context' => ActivityPub::CONTEXT];
186 $data['id'] = DI::baseUrl() . $modulePath . $owner['nickname'];
187 $data['type'] = 'OrderedCollection';
188 $data['totalItems'] = $contacts['count'];
190 // When we hide our friends we will only show the pure number but don't allow more.
191 $profile = Profile::getByUID($owner['uid']);
192 if (!empty($profile['hide-friends'])) {
197 $data['first'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=1';
199 $data['type'] = 'OrderedCollectionPage';
202 $sql = "SELECT `contact`.`url`
204 JOIN `apcontact` ON `apcontact`.`url` = `contact`.`url`
208 $parameters[] = ($page - 1) * 100;
211 $contacts = DBA::p($sql, ...$parameters);
212 while ($contact = DBA::fetch($contacts)) {
213 $list[] = $contact['url'];
215 DBA::close($contacts);
218 $data['next'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=' . ($page + 1);
221 $data['partOf'] = DI::baseUrl() . $modulePath . $owner['nickname'];
223 $data['orderedItems'] = $list;
230 * Public posts for the given owner
232 * @param array $owner Owner array
233 * @param integer $page Page number
234 * @param string $requester URL of requesting account
236 * @return array of posts
237 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
238 * @throws \ImagickException
240 public static function getOutbox($owner, $page = null, $requester = '')
242 $public_contact = Contact::getIdForURL($owner['url']);
243 $condition = ['uid' => 0, 'contact-id' => $public_contact,
244 'private' => [Item::PUBLIC, Item::UNLISTED]];
246 if (!empty($requester)) {
247 $requester_id = Contact::getIdForURL($requester, $owner['uid']);
248 if (!empty($requester_id)) {
249 $permissionSets = DI::permissionSet()->selectByContactId($requester_id, $owner['uid']);
250 if (!empty($permissionSets)) {
251 $condition = ['uid' => $owner['uid'], 'origin' => true,
252 'psid' => array_merge($permissionSets->column('id'),
253 [DI::permissionSet()->getIdFromACL($owner['uid'], '', '', '', '')])];
258 $condition = array_merge($condition,
259 ['author-id' => $public_contact,
260 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT],
261 'deleted' => false, 'visible' => true, 'moderated' => false]);
263 $count = DBA::count('item', $condition);
265 $data = ['@context' => ActivityPub::CONTEXT];
266 $data['id'] = DI::baseUrl() . '/outbox/' . $owner['nickname'];
267 $data['type'] = 'OrderedCollection';
268 $data['totalItems'] = $count;
271 $data['first'] = DI::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=1';
273 $data['type'] = 'OrderedCollectionPage';
276 $condition['parent-network'] = Protocol::NATIVE_SUPPORT;
278 $items = Item::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
279 while ($item = Item::fetch($items)) {
280 $activity = self::createActivityFromItem($item['id'], true);
281 $activity['type'] = $activity['type'] == 'Update' ? 'Create' : $activity['type'];
283 // Only list "Create" activity objects here, no reshares
284 if (!empty($activity['object']) && ($activity['type'] == 'Create')) {
285 $list[] = $activity['object'];
290 $data['next'] = DI::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1);
293 $data['partOf'] = DI::baseUrl() . '/outbox/' . $owner['nickname'];
295 $data['orderedItems'] = $list;
302 * Return the service array containing information the used software and it's url
304 * @return array with service data
306 private static function getService()
308 return ['type' => 'Service',
309 'name' => FRIENDICA_PLATFORM . " '" . FRIENDICA_CODENAME . "' " . FRIENDICA_VERSION . '-' . DB_UPDATE_VERSION,
310 'url' => DI::baseUrl()->get()];
314 * Return the ActivityPub profile of the given user
316 * @param integer $uid User ID
317 * @return array with profile data
318 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
320 public static function getProfile($uid)
323 $condition = ['uid' => $uid, 'blocked' => false, 'account_expired' => false,
324 'account_removed' => false, 'verified' => true];
325 $fields = ['guid', 'nickname', 'pubkey', 'account-type', 'page-flags'];
326 $user = DBA::selectFirst('user', $fields, $condition);
327 if (!DBA::isResult($user)) {
331 $fields = ['locality', 'region', 'country-name'];
332 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid]);
333 if (!DBA::isResult($profile)) {
337 $fields = ['name', 'url', 'location', 'about', 'avatar', 'photo'];
338 $contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
339 if (!DBA::isResult($contact)) {
343 $contact = User::getSystemAccount();
344 $user = ['guid' => '', 'nickname' => $contact['nick'], 'pubkey' => $contact['pubkey'],
345 'account-type' => $contact['contact-type'], 'page-flags' => User::PAGE_FLAGS_NORMAL];
346 $profile = ['locality' => '', 'region' => '', 'country-name' => ''];
349 $data = ['@context' => ActivityPub::CONTEXT];
350 $data['id'] = $contact['url'];
352 if (!empty($user['guid'])) {
353 $data['diaspora:guid'] = $user['guid'];
356 $data['type'] = ActivityPub::ACCOUNT_TYPES[$user['account-type']];
359 $data['following'] = DI::baseUrl() . '/following/' . $user['nickname'];
360 $data['followers'] = DI::baseUrl() . '/followers/' . $user['nickname'];
361 $data['inbox'] = DI::baseUrl() . '/inbox/' . $user['nickname'];
362 $data['outbox'] = DI::baseUrl() . '/outbox/' . $user['nickname'];
364 $data['inbox'] = DI::baseUrl() . '/friendica/inbox';
367 $data['preferredUsername'] = $user['nickname'];
368 $data['name'] = $contact['name'];
370 if (!empty($profile['country-name'] . $profile['region'] . $profile['locality'])) {
371 $data['vcard:hasAddress'] = ['@type' => 'vcard:Home', 'vcard:country-name' => $profile['country-name'],
372 'vcard:region' => $profile['region'], 'vcard:locality' => $profile['locality']];
375 if (!empty($contact['about'])) {
376 $data['summary'] = BBCode::convert($contact['about'], false);
379 $data['url'] = $contact['url'];
380 $data['manuallyApprovesFollowers'] = in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL, User::PAGE_FLAGS_PRVGROUP]);
381 $data['publicKey'] = ['id' => $contact['url'] . '#main-key',
382 'owner' => $contact['url'],
383 'publicKeyPem' => $user['pubkey']];
384 $data['endpoints'] = ['sharedInbox' => DI::baseUrl() . '/inbox'];
385 $data['icon'] = ['type' => 'Image',
386 'url' => $contact['photo']];
388 $data['generator'] = self::getService();
390 // tags: https://kitty.town/@inmysocks/100656097926961126.json
395 * @param string $username
397 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
399 public static function getDeletedUser($username)
402 '@context' => ActivityPub::CONTEXT,
403 'id' => DI::baseUrl() . '/profile/' . $username,
404 'type' => 'Tombstone',
405 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
406 'updated' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
407 'deleted' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
412 * Returns an array with permissions of a given item array
416 * @return array with permissions
417 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
418 * @throws \ImagickException
420 private static function fetchPermissionBlockFromConversation($item)
422 if (empty($item['thr-parent'])) {
426 $condition = ['item-uri' => $item['thr-parent'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
427 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
428 if (!DBA::isResult($conversation)) {
432 $activity = json_decode($conversation['source'], true);
434 $actor = JsonLD::fetchElement($activity, 'actor', 'id');
435 if (!empty($actor)) {
436 $permissions['to'][] = $actor;
437 $profile = APContact::getByURL($actor);
442 $item_profile = APContact::getByURL($item['author-link']);
443 $exclude[] = $item['author-link'];
445 if ($item['gravity'] == GRAVITY_PARENT) {
446 $exclude[] = $item['owner-link'];
449 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
450 if (empty($activity[$element])) {
453 if (is_string($activity[$element])) {
454 $activity[$element] = [$activity[$element]];
457 foreach ($activity[$element] as $receiver) {
458 if (empty($receiver)) {
462 if (!empty($profile['followers']) && $receiver == $profile['followers'] && !empty($item_profile['followers'])) {
463 $permissions[$element][] = $item_profile['followers'];
464 } elseif (!in_array($receiver, $exclude)) {
465 $permissions[$element][] = $receiver;
473 * Check if the given item id is from ActivityPub
475 * @param integer $item_id
476 * @return boolean "true" if the post is from ActivityPub
478 private static function isAPPost(int $item_id)
480 if (empty($item_id)) {
484 return Item::exists(['id' => $item_id, 'network' => Protocol::ACTIVITYPUB]);
488 * Creates an array of permissions from an item thread
490 * @param array $item Item array
491 * @param boolean $blindcopy addressing via "bcc" or "cc"?
492 * @param integer $last_id Last item id for adding receivers
493 * @param boolean $forum_mode "true" means that we are sending content to a forum
495 * @return array with permission data
496 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
497 * @throws \ImagickException
499 private static function createPermissionBlockForItem($item, $blindcopy, $last_id = 0, $forum_mode = false)
502 $last_id = $item['id'];
507 // Check if we should always deliver our stuff via BCC
508 if (!empty($item['uid'])) {
509 $profile = User::getOwnerDataById($item['uid']);
510 if (!empty($profile)) {
511 $always_bcc = $profile['hide-friends'];
515 if (DI::config()->get('system', 'ap_always_bcc')) {
519 if (self::isAnnounce($item) || DI::config()->get('debug', 'total_ap_delivery') || self::isAPPost($last_id)) {
520 // Will be activated in a later step
521 $networks = Protocol::FEDERATED;
523 // For now only send to these contacts:
524 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
527 $data = ['to' => [], 'cc' => [], 'bcc' => []];
529 if ($item['gravity'] == GRAVITY_PARENT) {
530 $actor_profile = APContact::getByURL($item['owner-link']);
532 $actor_profile = APContact::getByURL($item['author-link']);
535 $terms = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
537 if ($item['private'] != Item::PRIVATE) {
538 // Directly mention the original author upon a quoted reshare.
539 // Else just ensure that the original author receives the reshare.
540 $announce = self::getAnnounceArray($item);
541 if (!empty($announce['comment'])) {
542 $data['to'][] = $announce['actor']['url'];
543 } elseif (!empty($announce)) {
544 $data['cc'][] = $announce['actor']['url'];
547 $data = array_merge($data, self::fetchPermissionBlockFromConversation($item));
549 // Check if the item is completely public or unlisted
550 if ($item['private'] == Item::PUBLIC) {
551 $data['to'][] = ActivityPub::PUBLIC_COLLECTION;
553 $data['cc'][] = ActivityPub::PUBLIC_COLLECTION;
556 foreach ($terms as $term) {
557 $profile = APContact::getByURL($term['url'], false);
558 if (!empty($profile)) {
559 $data['to'][] = $profile['url'];
563 $receiver_list = Item::enumeratePermissions($item, true);
565 foreach ($terms as $term) {
566 $cid = Contact::getIdForURL($term['url'], $item['uid']);
567 if (!empty($cid) && in_array($cid, $receiver_list)) {
568 $contact = DBA::selectFirst('contact', ['url', 'network', 'protocol', 'gsid'], ['id' => $cid, 'network' => Protocol::FEDERATED]);
569 if (!DBA::isResult($contact) || !self::isAPContact($contact, $networks)) {
573 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
574 $data['to'][] = $profile['url'];
579 foreach ($receiver_list as $receiver) {
580 $contact = DBA::selectFirst('contact', ['url', 'hidden', 'network', 'protocol', 'gsid'], ['id' => $receiver, 'network' => Protocol::FEDERATED]);
581 if (!DBA::isResult($contact) || !self::isAPContact($contact, $networks)) {
585 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
586 if ($contact['hidden'] || $always_bcc) {
587 $data['bcc'][] = $profile['url'];
589 $data['cc'][] = $profile['url'];
595 if (!empty($item['parent'])) {
596 $parents = Item::select(['id', 'author-link', 'owner-link', 'gravity', 'uri'], ['parent' => $item['parent']]);
597 while ($parent = Item::fetch($parents)) {
598 if ($parent['gravity'] == GRAVITY_PARENT) {
599 $profile = APContact::getByURL($parent['owner-link'], false);
600 if (!empty($profile)) {
601 if ($item['gravity'] != GRAVITY_PARENT) {
602 // Comments to forums are directed to the forum
603 // But comments to forums aren't directed to the followers collection
604 // This rule is only valid when the actor isn't the forum.
605 // The forum needs to transmit their content to their followers.
606 if (($profile['type'] == 'Group') && ($profile['url'] != $actor_profile['url'])) {
607 $data['to'][] = $profile['url'];
609 $data['cc'][] = $profile['url'];
610 if (($item['private'] != Item::PRIVATE) && !empty($actor_profile['followers'])) {
611 $data['cc'][] = $actor_profile['followers'];
615 // Public thread parent post always are directed to the followers
616 if (($item['private'] != Item::PRIVATE) && !$forum_mode) {
617 $data['cc'][] = $actor_profile['followers'];
623 // Don't include data from future posts
624 if ($parent['id'] >= $last_id) {
628 $profile = APContact::getByURL($parent['author-link'], false);
629 if (!empty($profile)) {
630 if (($profile['type'] == 'Group') || ($parent['uri'] == $item['thr-parent'])) {
631 $data['to'][] = $profile['url'];
633 $data['cc'][] = $profile['url'];
637 DBA::close($parents);
640 $data['to'] = array_unique($data['to']);
641 $data['cc'] = array_unique($data['cc']);
642 $data['bcc'] = array_unique($data['bcc']);
644 if (($key = array_search($item['author-link'], $data['to'])) !== false) {
645 unset($data['to'][$key]);
648 if (($key = array_search($item['author-link'], $data['cc'])) !== false) {
649 unset($data['cc'][$key]);
652 if (($key = array_search($item['author-link'], $data['bcc'])) !== false) {
653 unset($data['bcc'][$key]);
656 foreach ($data['to'] as $to) {
657 if (($key = array_search($to, $data['cc'])) !== false) {
658 unset($data['cc'][$key]);
661 if (($key = array_search($to, $data['bcc'])) !== false) {
662 unset($data['bcc'][$key]);
666 foreach ($data['cc'] as $cc) {
667 if (($key = array_search($cc, $data['bcc'])) !== false) {
668 unset($data['bcc'][$key]);
672 $receivers = ['to' => array_values($data['to']), 'cc' => array_values($data['cc']), 'bcc' => array_values($data['bcc'])];
675 unset($receivers['bcc']);
682 * Check if an inbox is archived
684 * @param string $url Inbox url
686 * @return boolean "true" if inbox is archived
688 public static function archivedInbox($url)
690 return DBA::exists('inbox-status', ['url' => $url, 'archive' => true]);
694 * Check if a given contact should be delivered via AP
696 * @param array $contact
697 * @param array $networks
701 private static function isAPContact(array $contact, array $networks)
703 if (in_array($contact['network'], $networks) || ($contact['protocol'] == Protocol::ACTIVITYPUB)) {
707 return GServer::getProtocol($contact['gsid'] ?? 0) == Post\DeliveryData::ACTIVITYPUB;
711 * Fetches a list of inboxes of followers of a given user
713 * @param integer $uid User ID
714 * @param boolean $personal fetch personal inboxes
715 * @param boolean $all_ap Retrieve all AP enabled inboxes
717 * @return array of follower inboxes
718 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
719 * @throws \ImagickException
721 public static function fetchTargetInboxesforUser($uid, $personal = false, bool $all_ap = false)
727 if (!empty($item['uid'])) {
728 $profile = User::getOwnerDataById($item['uid']);
729 if (!empty($profile)) {
730 $isforum = $profile['account-type'] == User::ACCOUNT_TYPE_COMMUNITY;
734 if (DI::config()->get('debug', 'total_ap_delivery') || $all_ap) {
735 // Will be activated in a later step
736 $networks = Protocol::FEDERATED;
738 // For now only send to these contacts:
739 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
742 $condition = ['uid' => $uid, 'archive' => false, 'pending' => false, 'blocked' => false, 'network' => Protocol::FEDERATED];
745 $condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
748 $contacts = DBA::select('contact', ['id', 'url', 'network', 'protocol', 'gsid'], $condition);
749 while ($contact = DBA::fetch($contacts)) {
750 if (Contact::isLocal($contact['url'])) {
754 if (!self::isAPContact($contact, $networks)) {
758 if ($isforum && ($contact['network'] == Protocol::DFRN)) {
762 if (Network::isUrlBlocked($contact['url'])) {
766 $profile = APContact::getByURL($contact['url'], false);
767 if (!empty($profile)) {
768 if (empty($profile['sharedinbox']) || $personal) {
769 $target = $profile['inbox'];
771 $target = $profile['sharedinbox'];
773 if (!self::archivedInbox($target)) {
774 $inboxes[$target][] = $contact['id'];
778 DBA::close($contacts);
784 * Fetches an array of inboxes for the given item and user
786 * @param array $item Item array
787 * @param integer $uid User ID
788 * @param boolean $personal fetch personal inboxes
789 * @param integer $last_id Last item id for adding receivers
790 * @param boolean $forum_mode "true" means that we are sending content to a forum
791 * @return array with inboxes
792 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
793 * @throws \ImagickException
795 public static function fetchTargetInboxes($item, $uid, $personal = false, $last_id = 0, $forum_mode = false)
797 $permissions = self::createPermissionBlockForItem($item, true, $last_id, $forum_mode);
798 if (empty($permissions)) {
804 if ($item['gravity'] == GRAVITY_ACTIVITY) {
805 $item_profile = APContact::getByURL($item['author-link'], false);
807 $item_profile = APContact::getByURL($item['owner-link'], false);
810 if (empty($item_profile)) {
814 $profile_uid = User::getIdForURL($item_profile['url']);
816 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
817 if (empty($permissions[$element])) {
821 $blindcopy = in_array($element, ['bto', 'bcc']);
823 foreach ($permissions[$element] as $receiver) {
824 if (empty($receiver) || Network::isUrlBlocked($receiver)) {
828 if ($item_profile && ($receiver == $item_profile['followers']) && ($uid == $profile_uid)) {
829 $inboxes = array_merge($inboxes, self::fetchTargetInboxesforUser($uid, $personal, self::isAPPost($last_id)));
831 if (Contact::isLocal($receiver)) {
835 $profile = APContact::getByURL($receiver, false);
836 if (!empty($profile)) {
837 $contact = Contact::getByURLForUser($receiver, $uid, false, ['id']);
839 if (empty($profile['sharedinbox']) || $personal || $blindcopy) {
840 $target = $profile['inbox'];
842 $target = $profile['sharedinbox'];
844 if (!self::archivedInbox($target)) {
845 $inboxes[$target][] = $contact['id'] ?? 0;
856 * Creates an array in the structure of the item table for a given mail id
858 * @param integer $mail_id
863 public static function ItemArrayFromMail($mail_id)
865 $mail = DBA::selectFirst('mail', [], ['id' => $mail_id]);
866 if (!DBA::isResult($mail)) {
870 $mail['uri-id'] = ItemURI::insert(['uri' => $mail['uri'], 'guid' => $mail['guid']]);
872 $reply = DBA::selectFirst('mail', ['uri'], ['parent-uri' => $mail['parent-uri'], 'reply' => false]);
874 // Making the post more compatible for Mastodon by:
875 // - Making it a note and not an article (no title)
876 // - Moving the title into the "summary" field that is used as a "content warning"
877 $mail['body'] = '[abstract]' . $mail['title'] . "[/abstract]\n" . $mail['body'];
880 $mail['author-link'] = $mail['owner-link'] = $mail['from-url'];
881 $mail['allow_cid'] = '<'.$mail['contact-id'].'>';
882 $mail['allow_gid'] = '';
883 $mail['deny_cid'] = '';
884 $mail['deny_gid'] = '';
885 $mail['private'] = true;
886 $mail['deleted'] = false;
887 $mail['edited'] = $mail['created'];
888 $mail['plink'] = $mail['uri'];
889 $mail['thr-parent'] = $reply['uri'];
890 $mail['gravity'] = ($mail['reply'] ? GRAVITY_COMMENT: GRAVITY_PARENT);
892 $mail['event-type'] = '';
900 * Creates an activity array for a given mail id
902 * @param integer $mail_id
903 * @param boolean $object_mode Is the activity item is used inside another object?
905 * @return array of activity
908 public static function createActivityFromMail($mail_id, $object_mode = false)
910 $mail = self::ItemArrayFromMail($mail_id);
914 $object = self::createNote($mail);
917 $data = ['@context' => ActivityPub::CONTEXT];
922 $data['id'] = $mail['uri'] . '/Create';
923 $data['type'] = 'Create';
924 $data['actor'] = $mail['author-link'];
925 $data['published'] = DateTimeFormat::utc($mail['created'] . '+00:00', DateTimeFormat::ATOM);
926 $data['instrument'] = self::getService();
927 $data = array_merge($data, self::createPermissionBlockForItem($mail, true));
929 if (empty($data['to']) && !empty($data['cc'])) {
930 $data['to'] = $data['cc'];
933 if (empty($data['to']) && !empty($data['bcc'])) {
934 $data['to'] = $data['bcc'];
940 $object['to'] = $data['to'];
941 $object['tag'] = [['type' => 'Mention', 'href' => $object['to'][0], 'name' => '']];
943 unset($object['cc']);
944 unset($object['bcc']);
946 $data['directMessage'] = true;
948 $data['object'] = $object;
950 $owner = User::getOwnerDataById($mail['uid']);
952 if (!$object_mode && !empty($owner)) {
953 return LDSignature::sign($data, $owner);
960 * Returns the activity type of a given item
964 * @return string with activity type
965 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
966 * @throws \ImagickException
968 private static function getTypeOfItem($item)
972 // Only check for a reshare, if it is a real reshare and no quoted reshare
973 if (strpos($item['body'], "[share") === 0) {
974 $announce = self::getAnnounceArray($item);
975 $reshared = !empty($announce);
980 } elseif ($item['verb'] == Activity::POST) {
981 if ($item['created'] == $item['edited']) {
986 } elseif ($item['verb'] == Activity::LIKE) {
988 } elseif ($item['verb'] == Activity::DISLIKE) {
990 } elseif ($item['verb'] == Activity::ATTEND) {
992 } elseif ($item['verb'] == Activity::ATTENDNO) {
994 } elseif ($item['verb'] == Activity::ATTENDMAYBE) {
995 $type = 'TentativeAccept';
996 } elseif ($item['verb'] == Activity::FOLLOW) {
998 } elseif ($item['verb'] == Activity::TAG) {
1000 } elseif ($item['verb'] == Activity::ANNOUNCE) {
1010 * Creates the activity or fetches it from the cache
1012 * @param integer $item_id
1013 * @param boolean $force Force new cache entry
1015 * @return array with the activity
1016 * @throws \Exception
1018 public static function createCachedActivityFromItem($item_id, $force = false)
1020 $cachekey = 'APDelivery:createActivity:' . $item_id;
1023 $data = DI::cache()->get($cachekey);
1024 if (!is_null($data)) {
1029 $data = self::createActivityFromItem($item_id);
1031 DI::cache()->set($cachekey, $data, Duration::QUARTER_HOUR);
1036 * Creates an activity array for a given item id
1038 * @param integer $item_id
1039 * @param boolean $object_mode Is the activity item is used inside another object?
1041 * @return false|array
1042 * @throws \Exception
1044 public static function createActivityFromItem(int $item_id, bool $object_mode = false)
1046 Logger::info('Fetching activity', ['item' => $item_id]);
1047 $item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
1048 if (!DBA::isResult($item)) {
1052 // In case of a forum post ensure to return the original post if author and forum are on the same machine
1053 if (!empty($item['forum_mode'])) {
1054 $author = Contact::getById($item['author-id'], ['nurl']);
1055 if (!empty($author['nurl'])) {
1056 $self = Contact::selectFirst(['uid'], ['nurl' => $author['nurl'], 'self' => true]);
1057 if (!empty($self['uid'])) {
1058 $forum_item = Item::selectFirst([], ['uri-id' => $item['uri-id'], 'uid' => $self['uid']]);
1059 if (DBA::isResult($item)) {
1060 $item = $forum_item;
1066 if (empty($item['uri-id'])) {
1067 Logger::warning('Item without uri-id', ['item' => $item]);
1071 $condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
1072 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
1073 if (!$item['origin'] && DBA::isResult($conversation)) {
1074 $data = json_decode($conversation['source'], true);
1075 if (!empty($data['type'])) {
1076 if (in_array($data['type'], ['Create', 'Update'])) {
1078 unset($data['@context']);
1079 unset($data['signature']);
1081 Logger::info('Return stored conversation', ['item' => $item_id]);
1083 } elseif (in_array('as:' . $data['type'], Receiver::CONTENT_TYPES)) {
1084 if (!empty($data['@context'])) {
1085 $context = $data['@context'];
1086 unset($data['@context']);
1088 unset($data['actor']);
1094 $type = self::getTypeOfItem($item);
1096 if (!$object_mode) {
1097 $data = ['@context' => $context ?? ActivityPub::CONTEXT];
1099 if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) {
1101 } elseif ($item['deleted']) {
1108 if (($item['gravity'] == GRAVITY_ACTIVITY) && ($type != 'Undo')) {
1109 $data['id'] = $item['uri'];
1111 $data['id'] = $item['uri'] . '/' . $type;
1114 $data['type'] = $type;
1116 if (($type != 'Announce') || ($item['gravity'] != GRAVITY_PARENT)) {
1117 $data['actor'] = $item['author-link'];
1119 $data['actor'] = $item['owner-link'];
1122 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1124 $data['instrument'] = self::getService();
1126 $data = array_merge($data, self::createPermissionBlockForItem($item, false));
1128 if (in_array($data['type'], ['Create', 'Update', 'Delete'])) {
1129 $data['object'] = $object ?? self::createNote($item);
1130 } elseif ($data['type'] == 'Add') {
1131 $data = self::createAddTag($item, $data);
1132 } elseif ($data['type'] == 'Announce') {
1133 if ($item['verb'] == ACTIVITY::ANNOUNCE) {
1134 $data['object'] = $item['thr-parent'];
1136 $data = self::createAnnounce($item, $data);
1138 } elseif ($data['type'] == 'Follow') {
1139 $data['object'] = $item['parent-uri'];
1140 } elseif ($data['type'] == 'Undo') {
1141 $data['object'] = self::createActivityFromItem($item_id, true);
1143 $data['diaspora:guid'] = $item['guid'];
1144 if (!empty($item['signed_text'])) {
1145 $data['diaspora:like'] = $item['signed_text'];
1147 $data['object'] = $item['thr-parent'];
1150 if (!empty($item['contact-uid'])) {
1151 $uid = $item['contact-uid'];
1153 $uid = $item['uid'];
1156 $owner = User::getOwnerDataById($uid);
1158 Logger::info('Fetched activity', ['item' => $item_id, 'uid' => $uid]);
1160 // We don't sign if we aren't the actor. This is important for relaying content especially for forums
1161 if (!$object_mode && !empty($owner) && ($data['actor'] == $owner['url'])) {
1162 return LDSignature::sign($data, $owner);
1167 /// @todo Create "conversation" entry
1171 * Creates a location entry for a given item array
1173 * @param array $item
1175 * @return array with location array
1177 private static function createLocation($item)
1179 $location = ['type' => 'Place'];
1181 if (!empty($item['location'])) {
1182 $location['name'] = $item['location'];
1187 if (empty($item['coord'])) {
1188 $coord = Map::getCoordinates($item['location']);
1190 $coords = explode(' ', $item['coord']);
1191 if (count($coords) == 2) {
1192 $coord = ['lat' => $coords[0], 'lon' => $coords[1]];
1196 if (!empty($coord['lat']) && !empty($coord['lon'])) {
1197 $location['latitude'] = $coord['lat'];
1198 $location['longitude'] = $coord['lon'];
1205 * Returns a tag array for a given item array
1207 * @param array $item
1209 * @return array of tags
1210 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1212 private static function createTagList($item)
1216 $terms = Tag::getByURIId($item['uri-id'], [Tag::HASHTAG, Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
1217 foreach ($terms as $term) {
1218 if ($term['type'] == Tag::HASHTAG) {
1219 $url = DI::baseUrl() . '/search?tag=' . urlencode($term['name']);
1220 $tags[] = ['type' => 'Hashtag', 'href' => $url, 'name' => '#' . $term['name']];
1222 $contact = Contact::getByURL($term['url'], false, ['addr']);
1223 if (empty($contact)) {
1226 if (!empty($contact['addr'])) {
1227 $mention = '@' . $contact['addr'];
1229 $mention = '@' . $term['url'];
1232 $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
1236 $announce = self::getAnnounceArray($item);
1237 // Mention the original author upon commented reshares
1238 if (!empty($announce['comment'])) {
1239 $tags[] = ['type' => 'Mention', 'href' => $announce['actor']['url'], 'name' => '@' . $announce['actor']['addr']];
1246 * Adds attachment data to the JSON document
1248 * @param array $item Data of the item that is to be posted
1249 * @param string $type Object type
1251 * @return array with attachment data
1252 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1254 private static function createAttachmentList($item, $type)
1258 // Currently deactivated, since it creates side effects on Mastodon and Pleroma.
1259 // It will be reactivated, once this cleared.
1261 $attach_data = BBCode::getAttachmentData($item['body']);
1262 if (!empty($attach_data['url'])) {
1263 $attachment = ['type' => 'Page',
1264 'mediaType' => 'text/html',
1265 'url' => $attach_data['url']];
1267 if (!empty($attach_data['title'])) {
1268 $attachment['name'] = $attach_data['title'];
1271 if (!empty($attach_data['description'])) {
1272 $attachment['summary'] = $attach_data['description'];
1275 if (!empty($attach_data['image'])) {
1276 $imgdata = Images::getInfoFromURLCached($attach_data['image']);
1278 $attachment['icon'] = ['type' => 'Image',
1279 'mediaType' => $imgdata['mime'],
1280 'width' => $imgdata[0],
1281 'height' => $imgdata[1],
1282 'url' => $attach_data['image']];
1286 $attachments[] = $attachment;
1289 foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT, Post\Media::TORRENT, Post\Media::UNKNOWN]) as $attachment) {
1290 $attachments[] = ['type' => 'Document',
1291 'mediaType' => $attachment['mimetype'],
1292 'url' => $attachment['url'],
1293 'name' => $attachment['description']];
1296 if ($type != 'Note') {
1297 return $attachments;
1300 foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO]) as $attachment) {
1301 $attachments[] = ['type' => 'Document',
1302 'mediaType' => $attachment['mimetype'],
1303 'url' => $attachment['url'],
1304 'name' => $attachment['description']];
1307 return $attachments;
1311 * Callback function to replace a Friendica style mention in a mention that is used on AP
1313 * @param array $match Matching values for the callback
1314 * @return string Replaced mention
1315 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1317 private static function mentionCallback($match)
1319 if (empty($match[1])) {
1323 $data = Contact::getByURL($match[1], false, ['url', 'alias', 'nick']);
1324 if (empty($data['nick'])) {
1328 return '[url=' . ($data['alias'] ?: $data['url']) . ']@' . $data['nick'] . '[/url]';
1332 * Remove image elements since they are added as attachment
1334 * @param string $body
1336 * @return string with removed images
1338 private static function removePictures($body)
1340 // Simplify image codes
1341 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
1342 $body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
1344 // Now remove local links
1345 $body = preg_replace_callback(
1346 '/\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]/Usi',
1348 // We remove the link when it is a link to a local photo page
1349 if (Photo::isLocalPage($match[1])) {
1352 // otherwise we just return the link
1353 return '[url]' . $match[1] . '[/url]';
1358 // Remove all pictures
1359 $body = preg_replace("/\[img\]([^\[\]]*)\[\/img\]/Usi", '', $body);
1365 * Fetches the "context" value for a givem item array from the "conversation" table
1367 * @param array $item
1369 * @return string with context url
1370 * @throws \Exception
1372 private static function fetchContextURLForItem($item)
1374 $conversation = DBA::selectFirst('conversation', ['conversation-href', 'conversation-uri'], ['item-uri' => $item['parent-uri']]);
1375 if (DBA::isResult($conversation) && !empty($conversation['conversation-href'])) {
1376 $context_uri = $conversation['conversation-href'];
1377 } elseif (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
1378 $context_uri = $conversation['conversation-uri'];
1380 $context_uri = $item['parent-uri'] . '#context';
1382 return $context_uri;
1386 * Returns if the post contains sensitive content ("nsfw")
1388 * @param integer $uri_id
1391 * @throws \Exception
1393 private static function isSensitive($uri_id)
1395 return DBA::exists('tag-view', ['uri-id' => $uri_id, 'name' => 'nsfw']);
1399 * Creates event data
1401 * @param array $item
1403 * @return array with the event data
1404 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1406 public static function createEvent($item)
1409 $event['name'] = $item['event-summary'];
1410 $event['content'] = BBCode::convert($item['event-desc'], false, BBCode::ACTIVITYPUB);
1411 $event['startTime'] = DateTimeFormat::utc($item['event-start'] . '+00:00', DateTimeFormat::ATOM);
1413 if (!$item['event-nofinish']) {
1414 $event['endTime'] = DateTimeFormat::utc($item['event-finish'] . '+00:00', DateTimeFormat::ATOM);
1417 if (!empty($item['event-location'])) {
1418 $item['location'] = $item['event-location'];
1419 $event['location'] = self::createLocation($item);
1426 * Creates a note/article object array
1428 * @param array $item
1430 * @return array with the object data
1431 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1432 * @throws \ImagickException
1434 public static function createNote($item)
1440 if ($item['event-type'] == 'event') {
1442 } elseif (!empty($item['title'])) {
1448 if ($item['deleted']) {
1449 $type = 'Tombstone';
1453 $data['id'] = $item['uri'];
1454 $data['type'] = $type;
1456 if ($item['deleted']) {
1460 $data['summary'] = BBCode::toPlaintext(BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB));
1462 if ($item['uri'] != $item['thr-parent']) {
1463 $data['inReplyTo'] = $item['thr-parent'];
1465 $data['inReplyTo'] = null;
1468 $data['diaspora:guid'] = $item['guid'];
1469 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1471 if ($item['created'] != $item['edited']) {
1472 $data['updated'] = DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM);
1475 $data['url'] = $item['plink'];
1476 $data['attributedTo'] = $item['author-link'];
1477 $data['sensitive'] = self::isSensitive($item['uri-id']);
1478 $data['context'] = self::fetchContextURLForItem($item);
1480 if (!empty($item['title'])) {
1481 $data['name'] = BBCode::toPlaintext($item['title'], false);
1484 $permission_block = self::createPermissionBlockForItem($item, false);
1486 $body = $item['body'];
1488 if ($type == 'Note') {
1489 $body = $item['raw-body'] ?? self::removePictures($body);
1490 } elseif (($type == 'Article') && empty($data['summary'])) {
1491 $data['summary'] = BBCode::toPlaintext(Plaintext::shorten(self::removePictures($body), 1000));
1494 if (empty($item['uid']) || !Feature::isEnabled($item['uid'], 'explicit_mentions')) {
1495 $body = self::prependMentions($body, $item['uri-id'], $item['author-link']);
1498 if ($type == 'Event') {
1499 $data = array_merge($data, self::createEvent($item));
1501 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1502 $body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
1504 $data['content'] = BBCode::convert($body, false, BBCode::ACTIVITYPUB);
1507 // The regular "content" field does contain a minimized HTML. This is done since systems like
1508 // Mastodon has got problems with - for example - embedded pictures.
1509 // The contentMap does contain the unmodified HTML.
1510 $language = self::getLanguage($item);
1511 if (!empty($language)) {
1512 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1513 $richbody = preg_replace_callback($regexp, ['self', 'mentionCallback'], $item['body']);
1514 $richbody = BBCode::removeAttachment($richbody);
1516 $data['contentMap'][$language] = BBCode::convert($richbody, false);
1519 $data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
1521 if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
1522 $data['diaspora:comment'] = $item['signed_text'];
1525 $data['attachment'] = self::createAttachmentList($item, $type);
1526 $data['tag'] = self::createTagList($item);
1528 if (empty($data['location']) && (!empty($item['coord']) || !empty($item['location']))) {
1529 $data['location'] = self::createLocation($item);
1532 if (!empty($item['app'])) {
1533 $data['generator'] = ['type' => 'Application', 'name' => $item['app']];
1536 $data = array_merge($data, $permission_block);
1542 * Fetches the language from the post, the user or the system.
1544 * @param array $item
1546 * @return string language string
1548 private static function getLanguage(array $item)
1550 // Try to fetch the language from the post itself
1551 if (!empty($item['language'])) {
1552 $languages = array_keys(json_decode($item['language'], true));
1553 if (!empty($languages[0])) {
1554 return $languages[0];
1558 // Otherwise use the user's language
1559 if (!empty($item['uid'])) {
1560 $user = DBA::selectFirst('user', ['language'], ['uid' => $item['uid']]);
1561 if (!empty($user['language'])) {
1562 return $user['language'];
1566 // And finally just use the system language
1567 return DI::config()->get('system', 'language');
1571 * Creates an an "add tag" entry
1573 * @param array $item
1574 * @param array $data activity data
1576 * @return array with activity data for adding tags
1577 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1578 * @throws \ImagickException
1580 private static function createAddTag($item, $data)
1582 $object = XML::parseString($item['object']);
1583 $target = XML::parseString($item["target"]);
1585 $data['diaspora:guid'] = $item['guid'];
1586 $data['actor'] = $item['author-link'];
1587 $data['target'] = (string)$target->id;
1588 $data['summary'] = BBCode::toPlaintext($item['body']);
1589 $data['object'] = ['id' => (string)$object->id, 'type' => 'tag', 'name' => (string)$object->title, 'content' => (string)$object->content];
1595 * Creates an announce object entry
1597 * @param array $item
1598 * @param array $data activity data
1600 * @return array with activity data
1601 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1602 * @throws \ImagickException
1604 private static function createAnnounce($item, $data)
1606 $orig_body = $item['body'];
1607 $announce = self::getAnnounceArray($item);
1608 if (empty($announce)) {
1609 $data['type'] = 'Create';
1610 $data['object'] = self::createNote($item);
1614 if (empty($announce['comment'])) {
1615 // Pure announce, without a quote
1616 $data['type'] = 'Announce';
1617 $data['object'] = $announce['object']['uri'];
1622 $data['type'] = 'Create';
1623 $item['body'] = $announce['comment'] . "\n" . $announce['object']['plink'];
1624 $data['object'] = self::createNote($item);
1626 /// @todo Finally descide how to implement this in AP. This is a possible way:
1627 $data['object']['attachment'][] = self::createNote($announce['object']);
1629 $data['object']['source']['content'] = $orig_body;
1634 * Return announce related data if the item is an annunce
1636 * @param array $item
1640 public static function getAnnounceArray($item)
1642 $reshared = Item::getShareArray($item);
1643 if (empty($reshared['guid'])) {
1647 $reshared_item = Item::selectFirst([], ['guid' => $reshared['guid']]);
1648 if (!DBA::isResult($reshared_item)) {
1652 if (!in_array($reshared_item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
1656 $profile = APContact::getByURL($reshared_item['author-link'], false);
1657 if (empty($profile)) {
1661 return ['object' => $reshared_item, 'actor' => $profile, 'comment' => $reshared['comment']];
1665 * Checks if the provided item array is an announce
1667 * @param array $item
1671 public static function isAnnounce($item)
1673 if (!empty($item['verb']) && ($item['verb'] == Activity::ANNOUNCE)) {
1677 $announce = self::getAnnounceArray($item);
1678 if (empty($announce)) {
1682 return empty($announce['comment']);
1686 * Creates an activity id for a given contact id
1688 * @param integer $cid Contact ID of target
1690 * @return bool|string activity id
1692 public static function activityIDFromContact($cid)
1694 $contact = DBA::selectFirst('contact', ['uid', 'id', 'created'], ['id' => $cid]);
1695 if (!DBA::isResult($contact)) {
1699 $hash = hash('ripemd128', $contact['uid'].'-'.$contact['id'].'-'.$contact['created']);
1700 $uuid = substr($hash, 0, 8). '-' . substr($hash, 8, 4) . '-' . substr($hash, 12, 4) . '-' . substr($hash, 16, 4) . '-' . substr($hash, 20, 12);
1701 return DI::baseUrl() . '/activity/' . $uuid;
1705 * Transmits a contact suggestion to a given inbox
1707 * @param integer $uid User ID
1708 * @param string $inbox Target inbox
1709 * @param integer $suggestion_id Suggestion ID
1711 * @return boolean was the transmission successful?
1712 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1714 public static function sendContactSuggestion($uid, $inbox, $suggestion_id)
1716 $owner = User::getOwnerDataById($uid);
1718 $suggestion = DI::fsuggest()->getById($suggestion_id);
1720 $data = ['@context' => ActivityPub::CONTEXT,
1721 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1722 'type' => 'Announce',
1723 'actor' => $owner['url'],
1724 'object' => $suggestion->url,
1725 'content' => $suggestion->note,
1726 'instrument' => self::getService(),
1727 'to' => [ActivityPub::PUBLIC_COLLECTION],
1730 $signed = LDSignature::sign($data, $owner);
1732 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1733 return HTTPSignature::transmit($signed, $inbox, $uid);
1737 * Transmits a profile relocation to a given inbox
1739 * @param integer $uid User ID
1740 * @param string $inbox Target inbox
1742 * @return boolean was the transmission successful?
1743 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1745 public static function sendProfileRelocation($uid, $inbox)
1747 $owner = User::getOwnerDataById($uid);
1749 $data = ['@context' => ActivityPub::CONTEXT,
1750 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1751 'type' => 'dfrn:relocate',
1752 'actor' => $owner['url'],
1753 'object' => $owner['url'],
1754 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1755 'instrument' => self::getService(),
1756 'to' => [ActivityPub::PUBLIC_COLLECTION],
1759 $signed = LDSignature::sign($data, $owner);
1761 Logger::log('Deliver profile relocation for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1762 return HTTPSignature::transmit($signed, $inbox, $uid);
1766 * Transmits a profile deletion to a given inbox
1768 * @param integer $uid User ID
1769 * @param string $inbox Target inbox
1771 * @return boolean was the transmission successful?
1772 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1774 public static function sendProfileDeletion($uid, $inbox)
1776 $owner = User::getOwnerDataById($uid);
1778 if (empty($owner)) {
1779 Logger::error('No owner data found, the deletion message cannot be processed.', ['user' => $uid]);
1783 if (empty($owner['uprvkey'])) {
1784 Logger::error('No private key for owner found, the deletion message cannot be processed.', ['user' => $uid]);
1788 $data = ['@context' => ActivityPub::CONTEXT,
1789 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1791 'actor' => $owner['url'],
1792 'object' => $owner['url'],
1793 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1794 'instrument' => self::getService(),
1795 'to' => [ActivityPub::PUBLIC_COLLECTION],
1798 $signed = LDSignature::sign($data, $owner);
1800 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1801 return HTTPSignature::transmit($signed, $inbox, $uid);
1805 * Transmits a profile change to a given inbox
1807 * @param integer $uid User ID
1808 * @param string $inbox Target inbox
1810 * @return boolean was the transmission successful?
1811 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1812 * @throws \ImagickException
1814 public static function sendProfileUpdate($uid, $inbox)
1816 $owner = User::getOwnerDataById($uid);
1817 $profile = APContact::getByURL($owner['url']);
1819 $data = ['@context' => ActivityPub::CONTEXT,
1820 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1822 'actor' => $owner['url'],
1823 'object' => self::getProfile($uid),
1824 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1825 'instrument' => self::getService(),
1826 'to' => [$profile['followers']],
1829 $signed = LDSignature::sign($data, $owner);
1831 Logger::log('Deliver profile update for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1832 return HTTPSignature::transmit($signed, $inbox, $uid);
1836 * Transmits a given activity to a target
1838 * @param string $activity Type name
1839 * @param string $target Target profile
1840 * @param integer $uid User ID
1842 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1843 * @throws \ImagickException
1844 * @throws \Exception
1846 public static function sendActivity($activity, $target, $uid, $id = '')
1848 $profile = APContact::getByURL($target);
1849 if (empty($profile['inbox'])) {
1850 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1854 $owner = User::getOwnerDataById($uid);
1857 $id = DI::baseUrl() . '/activity/' . System::createGUID();
1860 $data = ['@context' => ActivityPub::CONTEXT,
1862 'type' => $activity,
1863 'actor' => $owner['url'],
1864 'object' => $profile['url'],
1865 'instrument' => self::getService(),
1866 'to' => [$profile['url']]];
1868 Logger::log('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1870 $signed = LDSignature::sign($data, $owner);
1871 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1875 * Transmits a "follow object" activity to a target
1876 * This is a preparation for sending automated "follow" requests when receiving "Announce" messages
1878 * @param string $object Object URL
1879 * @param string $target Target profile
1880 * @param integer $uid User ID
1882 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1883 * @throws \ImagickException
1884 * @throws \Exception
1886 public static function sendFollowObject($object, $target, $uid = 0)
1888 $profile = APContact::getByURL($target);
1889 if (empty($profile['inbox'])) {
1890 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1895 // Fetch the list of administrators
1896 $admin_mail = explode(',', str_replace(' ', '', DI::config()->get('config', 'admin_email')));
1898 // We need to use some user as a sender. It doesn't care who it will send. We will use an administrator account.
1899 $condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false, 'email' => $admin_mail];
1900 $first_user = DBA::selectFirst('user', ['uid'], $condition);
1901 $uid = $first_user['uid'];
1904 $condition = ['verb' => Activity::FOLLOW, 'uid' => 0, 'parent-uri' => $object,
1905 'author-id' => Contact::getPublicIdByUserId($uid)];
1906 if (Item::exists($condition)) {
1907 Logger::log('Follow for ' . $object . ' for user ' . $uid . ' does already exist.', Logger::DEBUG);
1911 $owner = User::getOwnerDataById($uid);
1913 $data = ['@context' => ActivityPub::CONTEXT,
1914 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1916 'actor' => $owner['url'],
1917 'object' => $object,
1918 'instrument' => self::getService(),
1919 'to' => [$profile['url']]];
1921 Logger::log('Sending follow ' . $object . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1923 $signed = LDSignature::sign($data, $owner);
1924 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1928 * Transmit a message that the contact request had been accepted
1930 * @param string $target Target profile
1932 * @param integer $uid User ID
1933 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1934 * @throws \ImagickException
1936 public static function sendContactAccept($target, $id, $uid)
1938 $profile = APContact::getByURL($target);
1939 if (empty($profile['inbox'])) {
1940 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1944 $owner = User::getOwnerDataById($uid);
1945 $data = ['@context' => ActivityPub::CONTEXT,
1946 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1948 'actor' => $owner['url'],
1950 'id' => (string)$id,
1952 'actor' => $profile['url'],
1953 'object' => $owner['url']
1955 'instrument' => self::getService(),
1956 'to' => [$profile['url']]];
1958 Logger::debug('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id);
1960 $signed = LDSignature::sign($data, $owner);
1961 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1965 * Reject a contact request or terminates the contact relation
1967 * @param string $target Target profile
1969 * @param integer $uid User ID
1970 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1971 * @throws \ImagickException
1973 public static function sendContactReject($target, $id, $uid)
1975 $profile = APContact::getByURL($target);
1976 if (empty($profile['inbox'])) {
1977 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1981 $owner = User::getOwnerDataById($uid);
1982 $data = ['@context' => ActivityPub::CONTEXT,
1983 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1985 'actor' => $owner['url'],
1987 'id' => (string)$id,
1989 'actor' => $profile['url'],
1990 'object' => $owner['url']
1992 'instrument' => self::getService(),
1993 'to' => [$profile['url']]];
1995 Logger::debug('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id);
1997 $signed = LDSignature::sign($data, $owner);
1998 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
2002 * Transmits a message that we don't want to follow this contact anymore
2004 * @param string $target Target profile
2005 * @param integer $uid User ID
2006 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2007 * @throws \ImagickException
2008 * @throws \Exception
2009 * @return bool success
2011 public static function sendContactUndo($target, $cid, $uid)
2013 $profile = APContact::getByURL($target);
2014 if (empty($profile['inbox'])) {
2015 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
2019 $object_id = self::activityIDFromContact($cid);
2020 if (empty($object_id)) {
2024 $id = DI::baseUrl() . '/activity/' . System::createGUID();
2026 $owner = User::getOwnerDataById($uid);
2027 $data = ['@context' => ActivityPub::CONTEXT,
2030 'actor' => $owner['url'],
2031 'object' => ['id' => $object_id, 'type' => 'Follow',
2032 'actor' => $owner['url'],
2033 'object' => $profile['url']],
2034 'instrument' => self::getService(),
2035 'to' => [$profile['url']]];
2037 Logger::log('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, Logger::DEBUG);
2039 $signed = LDSignature::sign($data, $owner);
2040 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
2043 private static function prependMentions($body, int $uriid, string $authorLink)
2047 foreach (Tag::getByURIId($uriid, [Tag::IMPLICIT_MENTION]) as $tag) {
2048 $profile = Contact::getByURL($tag['url'], false, ['addr', 'contact-type', 'nick']);
2049 if (!empty($profile['addr'])
2050 && $profile['contact-type'] != Contact::TYPE_COMMUNITY
2051 && !strstr($body, $profile['addr'])
2052 && !strstr($body, $tag['url'])
2053 && $tag['url'] !== $authorLink
2055 $mentions[] = '@[url=' . $tag['url'] . ']' . $profile['nick'] . '[/url]';
2059 $mentions[] = $body;
2061 return implode(' ', $mentions);