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\Post;
41 use Friendica\Model\Tag;
42 use Friendica\Model\User;
43 use Friendica\Protocol\Activity;
44 use Friendica\Protocol\ActivityPub;
45 use Friendica\Protocol\Relay;
46 use Friendica\Util\DateTimeFormat;
47 use Friendica\Util\HTTPSignature;
48 use Friendica\Util\JsonLD;
49 use Friendica\Util\LDSignature;
50 use Friendica\Util\Map;
51 use Friendica\Util\Network;
52 use Friendica\Util\XML;
54 require_once 'include/api.php';
55 require_once 'mod/share.php';
58 * ActivityPub Transmitter Protocol class
66 * Add relay servers to the list of inboxes
68 * @param array $inboxes
69 * @return array inboxes with added relay servers
71 public static function addRelayServerInboxes(array $inboxes = [])
73 $contacts = DBA::select('apcontact', ['inbox'],
74 ["`type` = ? AND `url` IN (SELECT `url` FROM `contact` WHERE `uid` = ? AND `rel` IN (?, ?))",
75 'Application', 0, Contact::FOLLOWER, Contact::FRIEND]);
76 while ($contact = DBA::fetch($contacts)) {
77 $inboxes[] = $contact['inbox'];
79 DBA::close($contacts);
85 * Add relay servers to the list of inboxes
87 * @param array $inboxes
88 * @return array inboxes with added relay servers
90 public static function addRelayServerInboxesForItem(int $item_id, array $inboxes = [])
92 $relays = Relay::getList($item_id, [], [Protocol::ACTIVITYPUB]);
97 foreach ($relays as $relay) {
98 if (!in_array($relay['batch'], $inboxes)) {
99 $inboxes[] = $relay['batch'];
106 * Subscribe to a relay
108 * @param string $url Subscribe actor url
109 * @return bool success
111 public static function sendRelayFollow(string $url)
113 $contact = Contact::getByURL($url);
114 if (empty($contact)) {
118 $activity_id = ActivityPub\Transmitter::activityIDFromContact($contact['id']);
119 $success = ActivityPub\Transmitter::sendActivity('Follow', $url, 0, $activity_id);
121 $rel = $contact['rel'] == Contact::SHARING ? Contact::FRIEND : Contact::FOLLOWER;
122 DBA::update('contact', ['rel' => $rel], ['id' => $contact['id']]);
129 * Unsubscribe from a relay
131 * @param string $url Subscribe actor url
132 * @param bool $force Set the relay status as non follower even if unsubscribe hadn't worked
133 * @return bool success
135 public static function sendRelayUndoFollow(string $url, bool $force = false)
137 $contact = Contact::getByURL($url);
138 if (empty($contact)) {
142 $success = self::sendContactUndo($url, $contact['id'], 0);
143 if ($success || $force) {
144 $rel = $contact['rel'] == Contact::FRIEND ? Contact::SHARING : Contact::NOTHING;
145 DBA::update('contact', ['rel' => $rel], ['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 * Creates an array of permissions from an item thread
475 * @param array $item Item array
476 * @param boolean $blindcopy addressing via "bcc" or "cc"?
477 * @param integer $last_id Last item id for adding receivers
478 * @param boolean $forum_mode "true" means that we are sending content to a forum
480 * @return array with permission data
481 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
482 * @throws \ImagickException
484 private static function createPermissionBlockForItem($item, $blindcopy, $last_id = 0, $forum_mode = false)
487 $last_id = $item['id'];
492 // Check if we should always deliver our stuff via BCC
493 if (!empty($item['uid'])) {
494 $profile = User::getOwnerDataById($item['uid']);
495 if (!empty($profile)) {
496 $always_bcc = $profile['hide-friends'];
500 if (DI::config()->get('system', 'ap_always_bcc')) {
504 if (self::isAnnounce($item) || DI::config()->get('debug', 'total_ap_delivery')) {
505 // Will be activated in a later step
506 $networks = Protocol::FEDERATED;
508 // For now only send to these contacts:
509 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
512 $data = ['to' => [], 'cc' => [], 'bcc' => []];
514 if ($item['gravity'] == GRAVITY_PARENT) {
515 $actor_profile = APContact::getByURL($item['owner-link']);
517 $actor_profile = APContact::getByURL($item['author-link']);
520 $terms = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
522 if ($item['private'] != Item::PRIVATE) {
523 // Directly mention the original author upon a quoted reshare.
524 // Else just ensure that the original author receives the reshare.
525 $announce = self::getAnnounceArray($item);
526 if (!empty($announce['comment'])) {
527 $data['to'][] = $announce['actor']['url'];
528 } elseif (!empty($announce)) {
529 $data['cc'][] = $announce['actor']['url'];
532 $data = array_merge($data, self::fetchPermissionBlockFromConversation($item));
534 // Check if the item is completely public or unlisted
535 if ($item['private'] == Item::PUBLIC) {
536 $data['to'][] = ActivityPub::PUBLIC_COLLECTION;
538 $data['cc'][] = ActivityPub::PUBLIC_COLLECTION;
541 foreach ($terms as $term) {
542 $profile = APContact::getByURL($term['url'], false);
543 if (!empty($profile)) {
544 $data['to'][] = $profile['url'];
548 $receiver_list = Item::enumeratePermissions($item, true);
550 foreach ($terms as $term) {
551 $cid = Contact::getIdForURL($term['url'], $item['uid']);
552 if (!empty($cid) && in_array($cid, $receiver_list)) {
553 $contact = DBA::selectFirst('contact', ['url', 'network', 'protocol'], ['id' => $cid]);
554 if (!DBA::isResult($contact) || (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB))) {
558 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
559 $data['to'][] = $profile['url'];
564 foreach ($receiver_list as $receiver) {
565 $contact = DBA::selectFirst('contact', ['url', 'hidden', 'network', 'protocol'], ['id' => $receiver]);
566 if (!DBA::isResult($contact) || (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB))) {
570 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
571 if ($contact['hidden'] || $always_bcc) {
572 $data['bcc'][] = $profile['url'];
574 $data['cc'][] = $profile['url'];
580 if (!empty($item['parent'])) {
581 $parents = Item::select(['id', 'author-link', 'owner-link', 'gravity', 'uri'], ['parent' => $item['parent']]);
582 while ($parent = Item::fetch($parents)) {
583 if ($parent['gravity'] == GRAVITY_PARENT) {
584 $profile = APContact::getByURL($parent['owner-link'], false);
585 if (!empty($profile)) {
586 if ($item['gravity'] != GRAVITY_PARENT) {
587 // Comments to forums are directed to the forum
588 // But comments to forums aren't directed to the followers collection
589 // This rule is only valid when the actor isn't the forum.
590 // The forum needs to transmit their content to their followers.
591 if (($profile['type'] == 'Group') && ($profile['url'] != $actor_profile['url'])) {
592 $data['to'][] = $profile['url'];
594 $data['cc'][] = $profile['url'];
595 if (($item['private'] != Item::PRIVATE) && !empty($actor_profile['followers'])) {
596 $data['cc'][] = $actor_profile['followers'];
600 // Public thread parent post always are directed to the followers
601 if (($item['private'] != Item::PRIVATE) && !$forum_mode) {
602 $data['cc'][] = $actor_profile['followers'];
608 // Don't include data from future posts
609 if ($parent['id'] >= $last_id) {
613 $profile = APContact::getByURL($parent['author-link'], false);
614 if (!empty($profile)) {
615 if (($profile['type'] == 'Group') || ($parent['uri'] == $item['thr-parent'])) {
616 $data['to'][] = $profile['url'];
618 $data['cc'][] = $profile['url'];
622 DBA::close($parents);
625 $data['to'] = array_unique($data['to']);
626 $data['cc'] = array_unique($data['cc']);
627 $data['bcc'] = array_unique($data['bcc']);
629 if (($key = array_search($item['author-link'], $data['to'])) !== false) {
630 unset($data['to'][$key]);
633 if (($key = array_search($item['author-link'], $data['cc'])) !== false) {
634 unset($data['cc'][$key]);
637 if (($key = array_search($item['author-link'], $data['bcc'])) !== false) {
638 unset($data['bcc'][$key]);
641 foreach ($data['to'] as $to) {
642 if (($key = array_search($to, $data['cc'])) !== false) {
643 unset($data['cc'][$key]);
646 if (($key = array_search($to, $data['bcc'])) !== false) {
647 unset($data['bcc'][$key]);
651 foreach ($data['cc'] as $cc) {
652 if (($key = array_search($cc, $data['bcc'])) !== false) {
653 unset($data['bcc'][$key]);
657 $receivers = ['to' => array_values($data['to']), 'cc' => array_values($data['cc']), 'bcc' => array_values($data['bcc'])];
660 unset($receivers['bcc']);
667 * Check if an inbox is archived
669 * @param string $url Inbox url
671 * @return boolean "true" if inbox is archived
673 private static function archivedInbox($url)
675 return DBA::exists('inbox-status', ['url' => $url, 'archive' => true]);
679 * Fetches a list of inboxes of followers of a given user
681 * @param integer $uid User ID
682 * @param boolean $personal fetch personal inboxes
684 * @return array of follower inboxes
685 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
686 * @throws \ImagickException
688 public static function fetchTargetInboxesforUser($uid, $personal = false)
694 if (!empty($item['uid'])) {
695 $profile = User::getOwnerDataById($item['uid']);
696 if (!empty($profile)) {
697 $isforum = $profile['account-type'] == User::ACCOUNT_TYPE_COMMUNITY;
701 if (DI::config()->get('debug', 'total_ap_delivery')) {
702 // Will be activated in a later step
703 $networks = Protocol::FEDERATED;
705 // For now only send to these contacts:
706 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
709 $condition = ['uid' => $uid, 'archive' => false, 'pending' => false, 'blocked' => false];
712 $condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
715 $contacts = DBA::select('contact', ['url', 'network', 'protocol'], $condition);
716 while ($contact = DBA::fetch($contacts)) {
717 if (Contact::isLocal($contact['url'])) {
721 if (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB)) {
725 if ($isforum && ($contact['network'] == Protocol::DFRN)) {
729 if (Network::isUrlBlocked($contact['url'])) {
733 $profile = APContact::getByURL($contact['url'], false);
734 if (!empty($profile)) {
735 if (empty($profile['sharedinbox']) || $personal) {
736 $target = $profile['inbox'];
738 $target = $profile['sharedinbox'];
740 if (!self::archivedInbox($target)) {
741 $inboxes[$target] = $target;
745 DBA::close($contacts);
751 * Fetches an array of inboxes for the given item and user
753 * @param array $item Item array
754 * @param integer $uid User ID
755 * @param boolean $personal fetch personal inboxes
756 * @param integer $last_id Last item id for adding receivers
757 * @param boolean $forum_mode "true" means that we are sending content to a forum
758 * @return array with inboxes
759 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
760 * @throws \ImagickException
762 public static function fetchTargetInboxes($item, $uid, $personal = false, $last_id = 0, $forum_mode = false)
764 $permissions = self::createPermissionBlockForItem($item, true, $last_id, $forum_mode);
765 if (empty($permissions)) {
771 if ($item['gravity'] == GRAVITY_ACTIVITY) {
772 $item_profile = APContact::getByURL($item['author-link'], false);
774 $item_profile = APContact::getByURL($item['owner-link'], false);
777 if (empty($item_profile)) {
781 $profile_uid = User::getIdForURL($item_profile['url']);
783 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
784 if (empty($permissions[$element])) {
788 $blindcopy = in_array($element, ['bto', 'bcc']);
790 foreach ($permissions[$element] as $receiver) {
791 if (empty($receiver) || Network::isUrlBlocked($receiver)) {
795 if ($item_profile && ($receiver == $item_profile['followers']) && ($uid == $profile_uid)) {
796 $inboxes = array_merge($inboxes, self::fetchTargetInboxesforUser($uid, $personal));
798 if (Contact::isLocal($receiver)) {
802 $profile = APContact::getByURL($receiver, false);
803 if (!empty($profile)) {
804 if (empty($profile['sharedinbox']) || $personal || $blindcopy) {
805 $target = $profile['inbox'];
807 $target = $profile['sharedinbox'];
809 if (!self::archivedInbox($target)) {
810 $inboxes[$target] = $target;
821 * Creates an array in the structure of the item table for a given mail id
823 * @param integer $mail_id
828 public static function ItemArrayFromMail($mail_id)
830 $mail = DBA::selectFirst('mail', [], ['id' => $mail_id]);
831 if (!DBA::isResult($mail)) {
835 $mail['uri-id'] = ItemURI::insert(['uri' => $mail['uri'], 'guid' => $mail['guid']]);
837 $reply = DBA::selectFirst('mail', ['uri'], ['parent-uri' => $mail['parent-uri'], 'reply' => false]);
839 // Making the post more compatible for Mastodon by:
840 // - Making it a note and not an article (no title)
841 // - Moving the title into the "summary" field that is used as a "content warning"
842 $mail['body'] = '[abstract]' . $mail['title'] . "[/abstract]\n" . $mail['body'];
845 $mail['author-link'] = $mail['owner-link'] = $mail['from-url'];
846 $mail['allow_cid'] = '<'.$mail['contact-id'].'>';
847 $mail['allow_gid'] = '';
848 $mail['deny_cid'] = '';
849 $mail['deny_gid'] = '';
850 $mail['private'] = true;
851 $mail['deleted'] = false;
852 $mail['edited'] = $mail['created'];
853 $mail['plink'] = $mail['uri'];
854 $mail['thr-parent'] = $reply['uri'];
855 $mail['gravity'] = ($mail['reply'] ? GRAVITY_COMMENT: GRAVITY_PARENT);
857 $mail['event-type'] = '';
865 * Creates an activity array for a given mail id
867 * @param integer $mail_id
868 * @param boolean $object_mode Is the activity item is used inside another object?
870 * @return array of activity
873 public static function createActivityFromMail($mail_id, $object_mode = false)
875 $mail = self::ItemArrayFromMail($mail_id);
879 $object = self::createNote($mail);
882 $data = ['@context' => ActivityPub::CONTEXT];
887 $data['id'] = $mail['uri'] . '/Create';
888 $data['type'] = 'Create';
889 $data['actor'] = $mail['author-link'];
890 $data['published'] = DateTimeFormat::utc($mail['created'] . '+00:00', DateTimeFormat::ATOM);
891 $data['instrument'] = self::getService();
892 $data = array_merge($data, self::createPermissionBlockForItem($mail, true));
894 if (empty($data['to']) && !empty($data['cc'])) {
895 $data['to'] = $data['cc'];
898 if (empty($data['to']) && !empty($data['bcc'])) {
899 $data['to'] = $data['bcc'];
905 $object['to'] = $data['to'];
906 $object['tag'] = [['type' => 'Mention', 'href' => $object['to'][0], 'name' => '']];
908 unset($object['cc']);
909 unset($object['bcc']);
911 $data['directMessage'] = true;
913 $data['object'] = $object;
915 $owner = User::getOwnerDataById($mail['uid']);
917 if (!$object_mode && !empty($owner)) {
918 return LDSignature::sign($data, $owner);
925 * Returns the activity type of a given item
929 * @return string with activity type
930 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
931 * @throws \ImagickException
933 private static function getTypeOfItem($item)
937 // Only check for a reshare, if it is a real reshare and no quoted reshare
938 if (strpos($item['body'], "[share") === 0) {
939 $announce = self::getAnnounceArray($item);
940 $reshared = !empty($announce);
945 } elseif ($item['verb'] == Activity::POST) {
946 if ($item['created'] == $item['edited']) {
951 } elseif ($item['verb'] == Activity::LIKE) {
953 } elseif ($item['verb'] == Activity::DISLIKE) {
955 } elseif ($item['verb'] == Activity::ATTEND) {
957 } elseif ($item['verb'] == Activity::ATTENDNO) {
959 } elseif ($item['verb'] == Activity::ATTENDMAYBE) {
960 $type = 'TentativeAccept';
961 } elseif ($item['verb'] == Activity::FOLLOW) {
963 } elseif ($item['verb'] == Activity::TAG) {
965 } elseif ($item['verb'] == Activity::ANNOUNCE) {
975 * Creates the activity or fetches it from the cache
977 * @param integer $item_id
978 * @param boolean $force Force new cache entry
980 * @return array with the activity
983 public static function createCachedActivityFromItem($item_id, $force = false)
985 $cachekey = 'APDelivery:createActivity:' . $item_id;
988 $data = DI::cache()->get($cachekey);
989 if (!is_null($data)) {
994 $data = self::createActivityFromItem($item_id);
996 DI::cache()->set($cachekey, $data, Duration::QUARTER_HOUR);
1001 * Creates an activity array for a given item id
1003 * @param integer $item_id
1004 * @param boolean $object_mode Is the activity item is used inside another object?
1006 * @return array of activity
1007 * @throws \Exception
1009 public static function createActivityFromItem($item_id, $object_mode = false)
1011 Logger::info('Fetching activity', ['item' => $item_id]);
1012 $item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
1013 if (!DBA::isResult($item)) {
1017 // In case of a forum post ensure to return the original post if author and forum are on the same machine
1018 if (!empty($item['forum_mode'])) {
1019 $author = Contact::getById($item['author-id'], ['nurl']);
1020 if (!empty($author['nurl'])) {
1021 $self = Contact::selectFirst(['uid'], ['nurl' => $author['nurl'], 'self' => true]);
1022 if (!empty($self['uid'])) {
1023 $forum_item = Item::selectFirst([], ['uri-id' => $item['uri-id'], 'uid' => $self['uid']]);
1024 if (DBA::isResult($item)) {
1025 $item = $forum_item;
1031 if (empty($item['uri-id'])) {
1032 Logger::warning('Item without uri-id', ['item' => $item]);
1037 $condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
1038 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
1039 if (DBA::isResult($conversation)) {
1040 $data = json_decode($conversation['source'], true);
1041 if (!empty($data['type'])) {
1042 if (in_array($data['type'], ['Create', 'Update'])) {
1044 unset($data['@context']);
1045 unset($data['signature']);
1047 Logger::info('Return stored conversation', ['item' => $item_id]);
1049 } elseif (in_array('as:' . $data['type'], Receiver::CONTENT_TYPES)) {
1050 if (!empty($data['@context'])) {
1051 $context = $data['@context'];
1052 unset($data['@context']);
1054 unset($data['actor']);
1060 $type = self::getTypeOfItem($item);
1063 if (!$object_mode) {
1064 $data = ['@context' => $context ?? ActivityPub::CONTEXT];
1066 if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) {
1068 } elseif ($item['deleted']) {
1075 if (($item['gravity'] == GRAVITY_ACTIVITY) && ($type != 'Undo')) {
1076 $data['id'] = $item['uri'];
1078 $data['id'] = $item['uri'] . '/' . $type;
1081 $data['type'] = $type;
1083 if (($type != 'Announce') || ($item['gravity'] != GRAVITY_PARENT)) {
1084 $data['actor'] = $item['author-link'];
1086 $data['actor'] = $item['owner-link'];
1089 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1091 $data['instrument'] = self::getService();
1093 $data = array_merge($data, self::createPermissionBlockForItem($item, false));
1095 if (in_array($data['type'], ['Create', 'Update', 'Delete'])) {
1096 $data['object'] = $object ?? self::createNote($item);
1097 } elseif ($data['type'] == 'Add') {
1098 $data = self::createAddTag($item, $data);
1099 } elseif ($data['type'] == 'Announce') {
1100 if ($item['verb'] == ACTIVITY::ANNOUNCE) {
1101 $data['object'] = $item['thr-parent'];
1103 $data = self::createAnnounce($item, $data);
1105 } elseif ($data['type'] == 'Follow') {
1106 $data['object'] = $item['parent-uri'];
1107 } elseif ($data['type'] == 'Undo') {
1108 $data['object'] = self::createActivityFromItem($item_id, true);
1110 $data['diaspora:guid'] = $item['guid'];
1111 if (!empty($item['signed_text'])) {
1112 $data['diaspora:like'] = $item['signed_text'];
1114 $data['object'] = $item['thr-parent'];
1117 if (!empty($item['contact-uid'])) {
1118 $uid = $item['contact-uid'];
1120 $uid = $item['uid'];
1123 $owner = User::getOwnerDataById($uid);
1125 Logger::info('Fetched activity', ['item' => $item_id, 'uid' => $uid]);
1127 // We don't sign if we aren't the actor. This is important for relaying content especially for forums
1128 if (!$object_mode && !empty($owner) && ($data['actor'] == $owner['url'])) {
1129 return LDSignature::sign($data, $owner);
1134 /// @todo Create "conversation" entry
1138 * Creates a location entry for a given item array
1140 * @param array $item
1142 * @return array with location array
1144 private static function createLocation($item)
1146 $location = ['type' => 'Place'];
1148 if (!empty($item['location'])) {
1149 $location['name'] = $item['location'];
1154 if (empty($item['coord'])) {
1155 $coord = Map::getCoordinates($item['location']);
1157 $coords = explode(' ', $item['coord']);
1158 if (count($coords) == 2) {
1159 $coord = ['lat' => $coords[0], 'lon' => $coords[1]];
1163 if (!empty($coord['lat']) && !empty($coord['lon'])) {
1164 $location['latitude'] = $coord['lat'];
1165 $location['longitude'] = $coord['lon'];
1172 * Returns a tag array for a given item array
1174 * @param array $item
1176 * @return array of tags
1177 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1179 private static function createTagList($item)
1183 $terms = Tag::getByURIId($item['uri-id'], [Tag::HASHTAG, Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
1184 foreach ($terms as $term) {
1185 if ($term['type'] == Tag::HASHTAG) {
1186 $url = DI::baseUrl() . '/search?tag=' . urlencode($term['name']);
1187 $tags[] = ['type' => 'Hashtag', 'href' => $url, 'name' => '#' . $term['name']];
1189 $contact = Contact::getByURL($term['url'], false, ['addr']);
1190 if (empty($contact)) {
1193 if (!empty($contact['addr'])) {
1194 $mention = '@' . $contact['addr'];
1196 $mention = '@' . $term['url'];
1199 $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
1203 $announce = self::getAnnounceArray($item);
1204 // Mention the original author upon commented reshares
1205 if (!empty($announce['comment'])) {
1206 $tags[] = ['type' => 'Mention', 'href' => $announce['actor']['url'], 'name' => '@' . $announce['actor']['addr']];
1213 * Adds attachment data to the JSON document
1215 * @param array $item Data of the item that is to be posted
1216 * @param string $type Object type
1218 * @return array with attachment data
1219 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1221 private static function createAttachmentList($item, $type)
1225 // Currently deactivated, since it creates side effects on Mastodon and Pleroma.
1226 // It will be reactivated, once this cleared.
1228 $attach_data = BBCode::getAttachmentData($item['body']);
1229 if (!empty($attach_data['url'])) {
1230 $attachment = ['type' => 'Page',
1231 'mediaType' => 'text/html',
1232 'url' => $attach_data['url']];
1234 if (!empty($attach_data['title'])) {
1235 $attachment['name'] = $attach_data['title'];
1238 if (!empty($attach_data['description'])) {
1239 $attachment['summary'] = $attach_data['description'];
1242 if (!empty($attach_data['image'])) {
1243 $imgdata = Images::getInfoFromURLCached($attach_data['image']);
1245 $attachment['icon'] = ['type' => 'Image',
1246 'mediaType' => $imgdata['mime'],
1247 'width' => $imgdata[0],
1248 'height' => $imgdata[1],
1249 'url' => $attach_data['image']];
1253 $attachments[] = $attachment;
1256 foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT, Post\Media::TORRENT, Post\Media::UNKNOWN]) as $attachment) {
1257 $attachments[] = ['type' => 'Document',
1258 'mediaType' => $attachment['mimetype'],
1259 'url' => $attachment['url'],
1260 'name' => $attachment['description']];
1263 if ($type != 'Note') {
1264 return $attachments;
1267 foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO]) as $attachment) {
1268 $attachments[] = ['type' => 'Document',
1269 'mediaType' => $attachment['mimetype'],
1270 'url' => $attachment['url'],
1271 'name' => $attachment['description']];
1274 return $attachments;
1278 * Callback function to replace a Friendica style mention in a mention that is used on AP
1280 * @param array $match Matching values for the callback
1281 * @return string Replaced mention
1282 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1284 private static function mentionCallback($match)
1286 if (empty($match[1])) {
1290 $data = Contact::getByURL($match[1], false, ['url', 'alias', 'nick']);
1291 if (empty($data['nick'])) {
1295 return '[url=' . ($data['alias'] ?: $data['url']) . ']@' . $data['nick'] . '[/url]';
1299 * Remove image elements since they are added as attachment
1301 * @param string $body
1303 * @return string with removed images
1305 private static function removePictures($body)
1307 // Simplify image codes
1308 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
1309 $body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
1311 // Now remove local links
1312 $body = preg_replace_callback(
1313 '/\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]/Usi',
1315 // We remove the link when it is a link to a local photo page
1316 if (Photo::isLocalPage($match[1])) {
1319 // otherwise we just return the link
1320 return '[url]' . $match[1] . '[/url]';
1325 // Remove all pictures
1326 $body = preg_replace("/\[img\]([^\[\]]*)\[\/img\]/Usi", '', $body);
1332 * Fetches the "context" value for a givem item array from the "conversation" table
1334 * @param array $item
1336 * @return string with context url
1337 * @throws \Exception
1339 private static function fetchContextURLForItem($item)
1341 $conversation = DBA::selectFirst('conversation', ['conversation-href', 'conversation-uri'], ['item-uri' => $item['parent-uri']]);
1342 if (DBA::isResult($conversation) && !empty($conversation['conversation-href'])) {
1343 $context_uri = $conversation['conversation-href'];
1344 } elseif (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
1345 $context_uri = $conversation['conversation-uri'];
1347 $context_uri = $item['parent-uri'] . '#context';
1349 return $context_uri;
1353 * Returns if the post contains sensitive content ("nsfw")
1355 * @param integer $uri_id
1358 * @throws \Exception
1360 private static function isSensitive($uri_id)
1362 return DBA::exists('tag-view', ['uri-id' => $uri_id, 'name' => 'nsfw']);
1366 * Creates event data
1368 * @param array $item
1370 * @return array with the event data
1371 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1373 public static function createEvent($item)
1376 $event['name'] = $item['event-summary'];
1377 $event['content'] = BBCode::convert($item['event-desc'], false, BBCode::ACTIVITYPUB);
1378 $event['startTime'] = DateTimeFormat::utc($item['event-start'] . '+00:00', DateTimeFormat::ATOM);
1380 if (!$item['event-nofinish']) {
1381 $event['endTime'] = DateTimeFormat::utc($item['event-finish'] . '+00:00', DateTimeFormat::ATOM);
1384 if (!empty($item['event-location'])) {
1385 $item['location'] = $item['event-location'];
1386 $event['location'] = self::createLocation($item);
1393 * Creates a note/article object array
1395 * @param array $item
1397 * @return array with the object data
1398 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1399 * @throws \ImagickException
1401 public static function createNote($item)
1407 if ($item['event-type'] == 'event') {
1409 } elseif (!empty($item['title'])) {
1415 if ($item['deleted']) {
1416 $type = 'Tombstone';
1420 $data['id'] = $item['uri'];
1421 $data['type'] = $type;
1423 if ($item['deleted']) {
1427 $data['summary'] = BBCode::toPlaintext(BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB));
1429 if ($item['uri'] != $item['thr-parent']) {
1430 $data['inReplyTo'] = $item['thr-parent'];
1432 $data['inReplyTo'] = null;
1435 $data['diaspora:guid'] = $item['guid'];
1436 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1438 if ($item['created'] != $item['edited']) {
1439 $data['updated'] = DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM);
1442 $data['url'] = $item['plink'];
1443 $data['attributedTo'] = $item['author-link'];
1444 $data['sensitive'] = self::isSensitive($item['uri-id']);
1445 $data['context'] = self::fetchContextURLForItem($item);
1447 if (!empty($item['title'])) {
1448 $data['name'] = BBCode::toPlaintext($item['title'], false);
1451 $permission_block = self::createPermissionBlockForItem($item, false);
1453 $body = $item['body'];
1455 if ($type == 'Note') {
1456 $body = $item['raw-body'] ?? self::removePictures($body);
1457 } elseif (($type == 'Article') && empty($data['summary'])) {
1458 $data['summary'] = BBCode::toPlaintext(Plaintext::shorten(self::removePictures($body), 1000));
1461 if (empty($item['uid']) || !Feature::isEnabled($item['uid'], 'explicit_mentions')) {
1462 $body = self::prependMentions($body, $item['uri-id'], $item['author-link']);
1465 if ($type == 'Event') {
1466 $data = array_merge($data, self::createEvent($item));
1468 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1469 $body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
1471 $data['content'] = BBCode::convert($body, false, BBCode::ACTIVITYPUB);
1474 // The regular "content" field does contain a minimized HTML. This is done since systems like
1475 // Mastodon has got problems with - for example - embedded pictures.
1476 // The contentMap does contain the unmodified HTML.
1477 $language = self::getLanguage($item);
1478 if (!empty($language)) {
1479 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1480 $richbody = preg_replace_callback($regexp, ['self', 'mentionCallback'], $item['body']);
1481 $richbody = BBCode::removeAttachment($richbody);
1483 $data['contentMap'][$language] = BBCode::convert($richbody, false);
1486 $data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
1488 if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
1489 $data['diaspora:comment'] = $item['signed_text'];
1492 $data['attachment'] = self::createAttachmentList($item, $type);
1493 $data['tag'] = self::createTagList($item);
1495 if (empty($data['location']) && (!empty($item['coord']) || !empty($item['location']))) {
1496 $data['location'] = self::createLocation($item);
1499 if (!empty($item['app'])) {
1500 $data['generator'] = ['type' => 'Application', 'name' => $item['app']];
1503 $data = array_merge($data, $permission_block);
1509 * Fetches the language from the post, the user or the system.
1511 * @param array $item
1513 * @return string language string
1515 private static function getLanguage(array $item)
1517 // Try to fetch the language from the post itself
1518 if (!empty($item['language'])) {
1519 $languages = array_keys(json_decode($item['language'], true));
1520 if (!empty($languages[0])) {
1521 return $languages[0];
1525 // Otherwise use the user's language
1526 if (!empty($item['uid'])) {
1527 $user = DBA::selectFirst('user', ['language'], ['uid' => $item['uid']]);
1528 if (!empty($user['language'])) {
1529 return $user['language'];
1533 // And finally just use the system language
1534 return DI::config()->get('system', 'language');
1538 * Creates an an "add tag" entry
1540 * @param array $item
1541 * @param array $data activity data
1543 * @return array with activity data for adding tags
1544 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1545 * @throws \ImagickException
1547 private static function createAddTag($item, $data)
1549 $object = XML::parseString($item['object']);
1550 $target = XML::parseString($item["target"]);
1552 $data['diaspora:guid'] = $item['guid'];
1553 $data['actor'] = $item['author-link'];
1554 $data['target'] = (string)$target->id;
1555 $data['summary'] = BBCode::toPlaintext($item['body']);
1556 $data['object'] = ['id' => (string)$object->id, 'type' => 'tag', 'name' => (string)$object->title, 'content' => (string)$object->content];
1562 * Creates an announce object entry
1564 * @param array $item
1565 * @param array $data activity data
1567 * @return array with activity data
1568 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1569 * @throws \ImagickException
1571 private static function createAnnounce($item, $data)
1573 $orig_body = $item['body'];
1574 $announce = self::getAnnounceArray($item);
1575 if (empty($announce)) {
1576 $data['type'] = 'Create';
1577 $data['object'] = self::createNote($item);
1581 if (empty($announce['comment'])) {
1582 // Pure announce, without a quote
1583 $data['type'] = 'Announce';
1584 $data['object'] = $announce['object']['uri'];
1589 $data['type'] = 'Create';
1590 $item['body'] = $announce['comment'] . "\n" . $announce['object']['plink'];
1591 $data['object'] = self::createNote($item);
1593 /// @todo Finally descide how to implement this in AP. This is a possible way:
1594 $data['object']['attachment'][] = self::createNote($announce['object']);
1596 $data['object']['source']['content'] = $orig_body;
1601 * Return announce related data if the item is an annunce
1603 * @param array $item
1607 public static function getAnnounceArray($item)
1609 $reshared = Item::getShareArray($item);
1610 if (empty($reshared['guid'])) {
1614 $reshared_item = Item::selectFirst([], ['guid' => $reshared['guid']]);
1615 if (!DBA::isResult($reshared_item)) {
1619 if (!in_array($reshared_item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
1623 $profile = APContact::getByURL($reshared_item['author-link'], false);
1624 if (empty($profile)) {
1628 return ['object' => $reshared_item, 'actor' => $profile, 'comment' => $reshared['comment']];
1632 * Checks if the provided item array is an announce
1634 * @param array $item
1638 public static function isAnnounce($item)
1640 if (!empty($item['verb']) && ($item['verb'] == Activity::ANNOUNCE)) {
1644 $announce = self::getAnnounceArray($item);
1645 if (empty($announce)) {
1649 return empty($announce['comment']);
1653 * Creates an activity id for a given contact id
1655 * @param integer $cid Contact ID of target
1657 * @return bool|string activity id
1659 public static function activityIDFromContact($cid)
1661 $contact = DBA::selectFirst('contact', ['uid', 'id', 'created'], ['id' => $cid]);
1662 if (!DBA::isResult($contact)) {
1666 $hash = hash('ripemd128', $contact['uid'].'-'.$contact['id'].'-'.$contact['created']);
1667 $uuid = substr($hash, 0, 8). '-' . substr($hash, 8, 4) . '-' . substr($hash, 12, 4) . '-' . substr($hash, 16, 4) . '-' . substr($hash, 20, 12);
1668 return DI::baseUrl() . '/activity/' . $uuid;
1672 * Transmits a contact suggestion to a given inbox
1674 * @param integer $uid User ID
1675 * @param string $inbox Target inbox
1676 * @param integer $suggestion_id Suggestion ID
1678 * @return boolean was the transmission successful?
1679 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1681 public static function sendContactSuggestion($uid, $inbox, $suggestion_id)
1683 $owner = User::getOwnerDataById($uid);
1685 $suggestion = DI::fsuggest()->getById($suggestion_id);
1687 $data = ['@context' => ActivityPub::CONTEXT,
1688 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1689 'type' => 'Announce',
1690 'actor' => $owner['url'],
1691 'object' => $suggestion->url,
1692 'content' => $suggestion->note,
1693 'instrument' => self::getService(),
1694 'to' => [ActivityPub::PUBLIC_COLLECTION],
1697 $signed = LDSignature::sign($data, $owner);
1699 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1700 return HTTPSignature::transmit($signed, $inbox, $uid);
1704 * Transmits a profile relocation to a given inbox
1706 * @param integer $uid User ID
1707 * @param string $inbox Target inbox
1709 * @return boolean was the transmission successful?
1710 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1712 public static function sendProfileRelocation($uid, $inbox)
1714 $owner = User::getOwnerDataById($uid);
1716 $data = ['@context' => ActivityPub::CONTEXT,
1717 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1718 'type' => 'dfrn:relocate',
1719 'actor' => $owner['url'],
1720 'object' => $owner['url'],
1721 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1722 'instrument' => self::getService(),
1723 'to' => [ActivityPub::PUBLIC_COLLECTION],
1726 $signed = LDSignature::sign($data, $owner);
1728 Logger::log('Deliver profile relocation for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1729 return HTTPSignature::transmit($signed, $inbox, $uid);
1733 * Transmits a profile deletion to a given inbox
1735 * @param integer $uid User ID
1736 * @param string $inbox Target inbox
1738 * @return boolean was the transmission successful?
1739 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1741 public static function sendProfileDeletion($uid, $inbox)
1743 $owner = User::getOwnerDataById($uid);
1745 if (empty($owner)) {
1746 Logger::error('No owner data found, the deletion message cannot be processed.', ['user' => $uid]);
1750 if (empty($owner['uprvkey'])) {
1751 Logger::error('No private key for owner found, the deletion message cannot be processed.', ['user' => $uid]);
1755 $data = ['@context' => ActivityPub::CONTEXT,
1756 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1758 'actor' => $owner['url'],
1759 'object' => $owner['url'],
1760 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1761 'instrument' => self::getService(),
1762 'to' => [ActivityPub::PUBLIC_COLLECTION],
1765 $signed = LDSignature::sign($data, $owner);
1767 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1768 return HTTPSignature::transmit($signed, $inbox, $uid);
1772 * Transmits a profile change to a given inbox
1774 * @param integer $uid User ID
1775 * @param string $inbox Target inbox
1777 * @return boolean was the transmission successful?
1778 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1779 * @throws \ImagickException
1781 public static function sendProfileUpdate($uid, $inbox)
1783 $owner = User::getOwnerDataById($uid);
1784 $profile = APContact::getByURL($owner['url']);
1786 $data = ['@context' => ActivityPub::CONTEXT,
1787 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1789 'actor' => $owner['url'],
1790 'object' => self::getProfile($uid),
1791 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1792 'instrument' => self::getService(),
1793 'to' => [$profile['followers']],
1796 $signed = LDSignature::sign($data, $owner);
1798 Logger::log('Deliver profile update for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1799 return HTTPSignature::transmit($signed, $inbox, $uid);
1803 * Transmits a given activity to a target
1805 * @param string $activity Type name
1806 * @param string $target Target profile
1807 * @param integer $uid User ID
1809 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1810 * @throws \ImagickException
1811 * @throws \Exception
1813 public static function sendActivity($activity, $target, $uid, $id = '')
1815 $profile = APContact::getByURL($target);
1816 if (empty($profile['inbox'])) {
1817 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1821 $owner = User::getOwnerDataById($uid);
1824 $id = DI::baseUrl() . '/activity/' . System::createGUID();
1827 $data = ['@context' => ActivityPub::CONTEXT,
1829 'type' => $activity,
1830 'actor' => $owner['url'],
1831 'object' => $profile['url'],
1832 'instrument' => self::getService(),
1833 'to' => [$profile['url']]];
1835 Logger::log('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1837 $signed = LDSignature::sign($data, $owner);
1838 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1842 * Transmits a "follow object" activity to a target
1843 * This is a preparation for sending automated "follow" requests when receiving "Announce" messages
1845 * @param string $object Object URL
1846 * @param string $target Target profile
1847 * @param integer $uid User ID
1849 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1850 * @throws \ImagickException
1851 * @throws \Exception
1853 public static function sendFollowObject($object, $target, $uid = 0)
1855 $profile = APContact::getByURL($target);
1856 if (empty($profile['inbox'])) {
1857 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1862 // Fetch the list of administrators
1863 $admin_mail = explode(',', str_replace(' ', '', DI::config()->get('config', 'admin_email')));
1865 // We need to use some user as a sender. It doesn't care who it will send. We will use an administrator account.
1866 $condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false, 'email' => $admin_mail];
1867 $first_user = DBA::selectFirst('user', ['uid'], $condition);
1868 $uid = $first_user['uid'];
1871 $condition = ['verb' => Activity::FOLLOW, 'uid' => 0, 'parent-uri' => $object,
1872 'author-id' => Contact::getPublicIdByUserId($uid)];
1873 if (Item::exists($condition)) {
1874 Logger::log('Follow for ' . $object . ' for user ' . $uid . ' does already exist.', Logger::DEBUG);
1878 $owner = User::getOwnerDataById($uid);
1880 $data = ['@context' => ActivityPub::CONTEXT,
1881 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1883 'actor' => $owner['url'],
1884 'object' => $object,
1885 'instrument' => self::getService(),
1886 'to' => [$profile['url']]];
1888 Logger::log('Sending follow ' . $object . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1890 $signed = LDSignature::sign($data, $owner);
1891 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1895 * Transmit a message that the contact request had been accepted
1897 * @param string $target Target profile
1899 * @param integer $uid User ID
1900 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1901 * @throws \ImagickException
1903 public static function sendContactAccept($target, $id, $uid)
1905 $profile = APContact::getByURL($target);
1906 if (empty($profile['inbox'])) {
1907 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1911 $owner = User::getOwnerDataById($uid);
1912 $data = ['@context' => ActivityPub::CONTEXT,
1913 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1915 'actor' => $owner['url'],
1917 'id' => (string)$id,
1919 'actor' => $profile['url'],
1920 'object' => $owner['url']
1922 'instrument' => self::getService(),
1923 'to' => [$profile['url']]];
1925 Logger::debug('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id);
1927 $signed = LDSignature::sign($data, $owner);
1928 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1932 * Reject a contact request or terminates the contact relation
1934 * @param string $target Target profile
1936 * @param integer $uid User ID
1937 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1938 * @throws \ImagickException
1940 public static function sendContactReject($target, $id, $uid)
1942 $profile = APContact::getByURL($target);
1943 if (empty($profile['inbox'])) {
1944 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1948 $owner = User::getOwnerDataById($uid);
1949 $data = ['@context' => ActivityPub::CONTEXT,
1950 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1952 'actor' => $owner['url'],
1954 'id' => (string)$id,
1956 'actor' => $profile['url'],
1957 'object' => $owner['url']
1959 'instrument' => self::getService(),
1960 'to' => [$profile['url']]];
1962 Logger::debug('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id);
1964 $signed = LDSignature::sign($data, $owner);
1965 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1969 * Transmits a message that we don't want to follow this contact anymore
1971 * @param string $target Target profile
1972 * @param integer $uid User ID
1973 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1974 * @throws \ImagickException
1975 * @throws \Exception
1976 * @return bool success
1978 public static function sendContactUndo($target, $cid, $uid)
1980 $profile = APContact::getByURL($target);
1981 if (empty($profile['inbox'])) {
1982 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1986 $object_id = self::activityIDFromContact($cid);
1987 if (empty($object_id)) {
1991 $id = DI::baseUrl() . '/activity/' . System::createGUID();
1993 $owner = User::getOwnerDataById($uid);
1994 $data = ['@context' => ActivityPub::CONTEXT,
1997 'actor' => $owner['url'],
1998 'object' => ['id' => $object_id, 'type' => 'Follow',
1999 'actor' => $owner['url'],
2000 'object' => $profile['url']],
2001 'instrument' => self::getService(),
2002 'to' => [$profile['url']]];
2004 Logger::log('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, Logger::DEBUG);
2006 $signed = LDSignature::sign($data, $owner);
2007 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
2010 private static function prependMentions($body, int $uriid, string $authorLink)
2014 foreach (Tag::getByURIId($uriid, [Tag::IMPLICIT_MENTION]) as $tag) {
2015 $profile = Contact::getByURL($tag['url'], false, ['addr', 'contact-type', 'nick']);
2016 if (!empty($profile['addr'])
2017 && $profile['contact-type'] != Contact::TYPE_COMMUNITY
2018 && !strstr($body, $profile['addr'])
2019 && !strstr($body, $tag['url'])
2020 && $tag['url'] !== $authorLink
2022 $mentions[] = '@[url=' . $tag['url'] . ']' . $profile['nick'] . '[/url]';
2026 $mentions[] = $body;
2028 return implode(' ', $mentions);