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\Util\DateTimeFormat;
46 use Friendica\Util\HTTPSignature;
47 use Friendica\Util\JsonLD;
48 use Friendica\Util\LDSignature;
49 use Friendica\Util\Map;
50 use Friendica\Util\Network;
51 use Friendica\Util\XML;
53 require_once 'include/api.php';
54 require_once 'mod/share.php';
57 * ActivityPub Transmitter Protocol class
65 * Add relay servers to the list of inboxes
67 * @param array $inboxes
68 * @return array inboxes with added relay servers
70 public static function addRelayServerInboxes(array $inboxes = [])
72 $contacts = DBA::select('apcontact', ['inbox'],
73 ["`type` = ? AND `url` IN (SELECT `url` FROM `contact` WHERE `uid` = ? AND `rel` IN (?, ?))",
74 'Application', 0, Contact::FOLLOWER, Contact::FRIEND]);
75 while ($contact = DBA::fetch($contacts)) {
76 $inboxes[] = $contact['inbox'];
78 DBA::close($contacts);
84 * Subscribe to a relay
86 * @param string $url Subscribe actor url
87 * @return bool success
89 public static function sendRelayFollow(string $url)
91 $contact = Contact::getByURL($url);
92 if (empty($contact)) {
96 $activity_id = ActivityPub\Transmitter::activityIDFromContact($contact['id']);
97 $success = ActivityPub\Transmitter::sendActivity('Follow', $url, 0, $activity_id);
99 $rel = $contact['rel'] == Contact::SHARING ? Contact::FRIEND : Contact::FOLLOWER;
100 DBA::update('contact', ['rel' => $rel], ['id' => $contact['id']]);
107 * Unsubscribe from a relay
109 * @param string $url Subscribe actor url
110 * @param bool $force Set the relay status as non follower even if unsubscribe hadn't worked
111 * @return bool success
113 public static function sendRelayUndoFollow(string $url, bool $force = false)
115 $contact = Contact::getByURL($url);
116 if (empty($contact)) {
120 $success = self::sendContactUndo($url, $contact['id'], 0);
121 if ($success || $force) {
122 $rel = $contact['rel'] == Contact::FRIEND ? Contact::SHARING : Contact::NOTHING;
123 DBA::update('contact', ['rel' => $rel], ['id' => $contact['id']]);
130 * Collects a list of contacts of the given owner
132 * @param array $owner Owner array
133 * @param int|array $rel The relevant value(s) contact.rel should match
134 * @param string $module The name of the relevant AP endpoint module (followers|following)
135 * @param integer $page Page number
137 * @return array of owners
140 public static function getContacts($owner, $rel, $module, $page = null)
144 'uid' => $owner['uid'],
151 $condition = DBA::buildCondition($parameters);
153 $sql = "SELECT COUNT(*) as `count`
155 JOIN `apcontact` ON `apcontact`.`url` = `contact`.`url`
158 $contacts = DBA::fetchFirst($sql, ...$parameters);
160 $modulePath = '/' . $module . '/';
162 $data = ['@context' => ActivityPub::CONTEXT];
163 $data['id'] = DI::baseUrl() . $modulePath . $owner['nickname'];
164 $data['type'] = 'OrderedCollection';
165 $data['totalItems'] = $contacts['count'];
167 // When we hide our friends we will only show the pure number but don't allow more.
168 $profile = Profile::getByUID($owner['uid']);
169 if (!empty($profile['hide-friends'])) {
174 $data['first'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=1';
176 $data['type'] = 'OrderedCollectionPage';
179 $sql = "SELECT `contact`.`url`
181 JOIN `apcontact` ON `apcontact`.`url` = `contact`.`url`
185 $parameters[] = ($page - 1) * 100;
188 $contacts = DBA::p($sql, ...$parameters);
189 while ($contact = DBA::fetch($contacts)) {
190 $list[] = $contact['url'];
192 DBA::close($contacts);
195 $data['next'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=' . ($page + 1);
198 $data['partOf'] = DI::baseUrl() . $modulePath . $owner['nickname'];
200 $data['orderedItems'] = $list;
207 * Public posts for the given owner
209 * @param array $owner Owner array
210 * @param integer $page Page number
211 * @param string $requester URL of requesting account
213 * @return array of posts
214 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
215 * @throws \ImagickException
217 public static function getOutbox($owner, $page = null, $requester = '')
219 $public_contact = Contact::getIdForURL($owner['url']);
220 $condition = ['uid' => 0, 'contact-id' => $public_contact,
221 'private' => [Item::PUBLIC, Item::UNLISTED]];
223 if (!empty($requester)) {
224 $requester_id = Contact::getIdForURL($requester, $owner['uid']);
225 if (!empty($requester_id)) {
226 $permissionSets = DI::permissionSet()->selectByContactId($requester_id, $owner['uid']);
227 if (!empty($permissionSets)) {
228 $condition = ['uid' => $owner['uid'], 'origin' => true,
229 'psid' => array_merge($permissionSets->column('id'),
230 [DI::permissionSet()->getIdFromACL($owner['uid'], '', '', '', '')])];
235 $condition = array_merge($condition,
236 ['author-id' => $public_contact,
237 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT],
238 'deleted' => false, 'visible' => true, 'moderated' => false]);
240 $count = DBA::count('item', $condition);
242 $data = ['@context' => ActivityPub::CONTEXT];
243 $data['id'] = DI::baseUrl() . '/outbox/' . $owner['nickname'];
244 $data['type'] = 'OrderedCollection';
245 $data['totalItems'] = $count;
248 $data['first'] = DI::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=1';
250 $data['type'] = 'OrderedCollectionPage';
253 $condition['parent-network'] = Protocol::NATIVE_SUPPORT;
255 $items = Item::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
256 while ($item = Item::fetch($items)) {
257 $activity = self::createActivityFromItem($item['id'], true);
258 $activity['type'] = $activity['type'] == 'Update' ? 'Create' : $activity['type'];
260 // Only list "Create" activity objects here, no reshares
261 if (!empty($activity['object']) && ($activity['type'] == 'Create')) {
262 $list[] = $activity['object'];
267 $data['next'] = DI::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1);
270 $data['partOf'] = DI::baseUrl() . '/outbox/' . $owner['nickname'];
272 $data['orderedItems'] = $list;
279 * Return the service array containing information the used software and it's url
281 * @return array with service data
283 private static function getService()
285 return ['type' => 'Service',
286 'name' => FRIENDICA_PLATFORM . " '" . FRIENDICA_CODENAME . "' " . FRIENDICA_VERSION . '-' . DB_UPDATE_VERSION,
287 'url' => DI::baseUrl()->get()];
291 * Return the ActivityPub profile of the given user
293 * @param integer $uid User ID
294 * @return array with profile data
295 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
297 public static function getProfile($uid)
300 $condition = ['uid' => $uid, 'blocked' => false, 'account_expired' => false,
301 'account_removed' => false, 'verified' => true];
302 $fields = ['guid', 'nickname', 'pubkey', 'account-type', 'page-flags'];
303 $user = DBA::selectFirst('user', $fields, $condition);
304 if (!DBA::isResult($user)) {
308 $fields = ['locality', 'region', 'country-name'];
309 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid]);
310 if (!DBA::isResult($profile)) {
314 $fields = ['name', 'url', 'location', 'about', 'avatar', 'photo'];
315 $contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
316 if (!DBA::isResult($contact)) {
320 $contact = User::getSystemAccount();
321 $user = ['guid' => '', 'nickname' => $contact['nick'], 'pubkey' => $contact['pubkey'],
322 'account-type' => $contact['contact-type'], 'page-flags' => User::PAGE_FLAGS_NORMAL];
323 $profile = ['locality' => '', 'region' => '', 'country-name' => ''];
326 $data = ['@context' => ActivityPub::CONTEXT];
327 $data['id'] = $contact['url'];
329 if (!empty($user['guid'])) {
330 $data['diaspora:guid'] = $user['guid'];
333 $data['type'] = ActivityPub::ACCOUNT_TYPES[$user['account-type']];
336 $data['following'] = DI::baseUrl() . '/following/' . $user['nickname'];
337 $data['followers'] = DI::baseUrl() . '/followers/' . $user['nickname'];
338 $data['inbox'] = DI::baseUrl() . '/inbox/' . $user['nickname'];
339 $data['outbox'] = DI::baseUrl() . '/outbox/' . $user['nickname'];
341 $data['inbox'] = DI::baseUrl() . '/friendica/inbox';
344 $data['preferredUsername'] = $user['nickname'];
345 $data['name'] = $contact['name'];
347 if (!empty($profile['country-name'] . $profile['region'] . $profile['locality'])) {
348 $data['vcard:hasAddress'] = ['@type' => 'vcard:Home', 'vcard:country-name' => $profile['country-name'],
349 'vcard:region' => $profile['region'], 'vcard:locality' => $profile['locality']];
352 if (!empty($contact['about'])) {
353 $data['summary'] = BBCode::convert($contact['about'], false);
356 $data['url'] = $contact['url'];
357 $data['manuallyApprovesFollowers'] = in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL, User::PAGE_FLAGS_PRVGROUP]);
358 $data['publicKey'] = ['id' => $contact['url'] . '#main-key',
359 'owner' => $contact['url'],
360 'publicKeyPem' => $user['pubkey']];
361 $data['endpoints'] = ['sharedInbox' => DI::baseUrl() . '/inbox'];
362 $data['icon'] = ['type' => 'Image',
363 'url' => $contact['photo']];
365 $data['generator'] = self::getService();
367 // tags: https://kitty.town/@inmysocks/100656097926961126.json
372 * @param string $username
374 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
376 public static function getDeletedUser($username)
379 '@context' => ActivityPub::CONTEXT,
380 'id' => DI::baseUrl() . '/profile/' . $username,
381 'type' => 'Tombstone',
382 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
383 'updated' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
384 'deleted' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
389 * Returns an array with permissions of a given item array
393 * @return array with permissions
394 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
395 * @throws \ImagickException
397 private static function fetchPermissionBlockFromConversation($item)
399 if (empty($item['thr-parent'])) {
403 $condition = ['item-uri' => $item['thr-parent'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
404 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
405 if (!DBA::isResult($conversation)) {
409 $activity = json_decode($conversation['source'], true);
411 $actor = JsonLD::fetchElement($activity, 'actor', 'id');
412 $profile = APContact::getByURL($actor);
414 $item_profile = APContact::getByURL($item['author-link']);
415 $exclude[] = $item['author-link'];
417 if ($item['gravity'] == GRAVITY_PARENT) {
418 $exclude[] = $item['owner-link'];
421 $permissions['to'][] = $actor;
423 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
424 if (empty($activity[$element])) {
427 if (is_string($activity[$element])) {
428 $activity[$element] = [$activity[$element]];
431 foreach ($activity[$element] as $receiver) {
432 if (empty($receiver)) {
436 if (!empty($profile['followers']) && $receiver == $profile['followers'] && !empty($item_profile['followers'])) {
437 $permissions[$element][] = $item_profile['followers'];
438 } elseif (!in_array($receiver, $exclude)) {
439 $permissions[$element][] = $receiver;
447 * Creates an array of permissions from an item thread
449 * @param array $item Item array
450 * @param boolean $blindcopy addressing via "bcc" or "cc"?
451 * @param integer $last_id Last item id for adding receivers
452 * @param boolean $forum_mode "true" means that we are sending content to a forum
454 * @return array with permission data
455 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
456 * @throws \ImagickException
458 private static function createPermissionBlockForItem($item, $blindcopy, $last_id = 0, $forum_mode = false)
461 $last_id = $item['id'];
466 // Check if we should always deliver our stuff via BCC
467 if (!empty($item['uid'])) {
468 $profile = User::getOwnerDataById($item['uid']);
469 if (!empty($profile)) {
470 $always_bcc = $profile['hide-friends'];
474 if (DI::config()->get('system', 'ap_always_bcc')) {
478 if (self::isAnnounce($item) || DI::config()->get('debug', 'total_ap_delivery')) {
479 // Will be activated in a later step
480 $networks = Protocol::FEDERATED;
482 // For now only send to these contacts:
483 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
486 $data = ['to' => [], 'cc' => [], 'bcc' => []];
488 if ($item['gravity'] == GRAVITY_PARENT) {
489 $actor_profile = APContact::getByURL($item['owner-link']);
491 $actor_profile = APContact::getByURL($item['author-link']);
494 $terms = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
496 if ($item['private'] != Item::PRIVATE) {
497 // Directly mention the original author upon a quoted reshare.
498 // Else just ensure that the original author receives the reshare.
499 $announce = self::getAnnounceArray($item);
500 if (!empty($announce['comment'])) {
501 $data['to'][] = $announce['actor']['url'];
502 } elseif (!empty($announce)) {
503 $data['cc'][] = $announce['actor']['url'];
506 $data = array_merge($data, self::fetchPermissionBlockFromConversation($item));
508 // Check if the item is completely public or unlisted
509 if ($item['private'] == Item::PUBLIC) {
510 $data['to'][] = ActivityPub::PUBLIC_COLLECTION;
512 $data['cc'][] = ActivityPub::PUBLIC_COLLECTION;
515 foreach ($terms as $term) {
516 $profile = APContact::getByURL($term['url'], false);
517 if (!empty($profile)) {
518 $data['to'][] = $profile['url'];
522 $receiver_list = Item::enumeratePermissions($item, true);
524 foreach ($terms as $term) {
525 $cid = Contact::getIdForURL($term['url'], $item['uid']);
526 if (!empty($cid) && in_array($cid, $receiver_list)) {
527 $contact = DBA::selectFirst('contact', ['url', 'network', 'protocol'], ['id' => $cid]);
528 if (!DBA::isResult($contact) || (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB))) {
532 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
533 $data['to'][] = $profile['url'];
538 foreach ($receiver_list as $receiver) {
539 $contact = DBA::selectFirst('contact', ['url', 'hidden', 'network', 'protocol'], ['id' => $receiver]);
540 if (!DBA::isResult($contact) || (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB))) {
544 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
545 if ($contact['hidden'] || $always_bcc) {
546 $data['bcc'][] = $profile['url'];
548 $data['cc'][] = $profile['url'];
554 if (!empty($item['parent'])) {
555 $parents = Item::select(['id', 'author-link', 'owner-link', 'gravity', 'uri'], ['parent' => $item['parent']]);
556 while ($parent = Item::fetch($parents)) {
557 if ($parent['gravity'] == GRAVITY_PARENT) {
558 $profile = APContact::getByURL($parent['owner-link'], false);
559 if (!empty($profile)) {
560 if ($item['gravity'] != GRAVITY_PARENT) {
561 // Comments to forums are directed to the forum
562 // But comments to forums aren't directed to the followers collection
563 // This rule is only valid when the actor isn't the forum.
564 // The forum needs to transmit their content to their followers.
565 if (($profile['type'] == 'Group') && ($profile['url'] != $actor_profile['url'])) {
566 $data['to'][] = $profile['url'];
568 $data['cc'][] = $profile['url'];
569 if (($item['private'] != Item::PRIVATE) && !empty($actor_profile['followers'])) {
570 $data['cc'][] = $actor_profile['followers'];
574 // Public thread parent post always are directed to the followers
575 if (($item['private'] != Item::PRIVATE) && !$forum_mode) {
576 $data['cc'][] = $actor_profile['followers'];
582 // Don't include data from future posts
583 if ($parent['id'] >= $last_id) {
587 $profile = APContact::getByURL($parent['author-link'], false);
588 if (!empty($profile)) {
589 if (($profile['type'] == 'Group') || ($parent['uri'] == $item['thr-parent'])) {
590 $data['to'][] = $profile['url'];
592 $data['cc'][] = $profile['url'];
596 DBA::close($parents);
599 $data['to'] = array_unique($data['to']);
600 $data['cc'] = array_unique($data['cc']);
601 $data['bcc'] = array_unique($data['bcc']);
603 if (($key = array_search($item['author-link'], $data['to'])) !== false) {
604 unset($data['to'][$key]);
607 if (($key = array_search($item['author-link'], $data['cc'])) !== false) {
608 unset($data['cc'][$key]);
611 if (($key = array_search($item['author-link'], $data['bcc'])) !== false) {
612 unset($data['bcc'][$key]);
615 foreach ($data['to'] as $to) {
616 if (($key = array_search($to, $data['cc'])) !== false) {
617 unset($data['cc'][$key]);
620 if (($key = array_search($to, $data['bcc'])) !== false) {
621 unset($data['bcc'][$key]);
625 foreach ($data['cc'] as $cc) {
626 if (($key = array_search($cc, $data['bcc'])) !== false) {
627 unset($data['bcc'][$key]);
631 $receivers = ['to' => array_values($data['to']), 'cc' => array_values($data['cc']), 'bcc' => array_values($data['bcc'])];
634 unset($receivers['bcc']);
641 * Check if an inbox is archived
643 * @param string $url Inbox url
645 * @return boolean "true" if inbox is archived
647 private static function archivedInbox($url)
649 return DBA::exists('inbox-status', ['url' => $url, 'archive' => true]);
653 * Fetches a list of inboxes of followers of a given user
655 * @param integer $uid User ID
656 * @param boolean $personal fetch personal inboxes
658 * @return array of follower inboxes
659 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
660 * @throws \ImagickException
662 public static function fetchTargetInboxesforUser($uid, $personal = false)
668 if (!empty($item['uid'])) {
669 $profile = User::getOwnerDataById($item['uid']);
670 if (!empty($profile)) {
671 $isforum = $profile['account-type'] == User::ACCOUNT_TYPE_COMMUNITY;
675 if (DI::config()->get('debug', 'total_ap_delivery')) {
676 // Will be activated in a later step
677 $networks = Protocol::FEDERATED;
679 // For now only send to these contacts:
680 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
683 $condition = ['uid' => $uid, 'archive' => false, 'pending' => false];
686 $condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
689 $contacts = DBA::select('contact', ['url', 'network', 'protocol'], $condition);
690 while ($contact = DBA::fetch($contacts)) {
691 if (Contact::isLocal($contact['url'])) {
695 if (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB)) {
699 if ($isforum && ($contact['dfrn'] == Protocol::DFRN)) {
703 if (Network::isUrlBlocked($contact['url'])) {
707 $profile = APContact::getByURL($contact['url'], false);
708 if (!empty($profile)) {
709 if (empty($profile['sharedinbox']) || $personal) {
710 $target = $profile['inbox'];
712 $target = $profile['sharedinbox'];
714 if (!self::archivedInbox($target)) {
715 $inboxes[$target] = $target;
719 DBA::close($contacts);
725 * Fetches an array of inboxes for the given item and user
727 * @param array $item Item array
728 * @param integer $uid User ID
729 * @param boolean $personal fetch personal inboxes
730 * @param integer $last_id Last item id for adding receivers
731 * @param boolean $forum_mode "true" means that we are sending content to a forum
732 * @return array with inboxes
733 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
734 * @throws \ImagickException
736 public static function fetchTargetInboxes($item, $uid, $personal = false, $last_id = 0, $forum_mode = false)
738 $permissions = self::createPermissionBlockForItem($item, true, $last_id, $forum_mode);
739 if (empty($permissions)) {
745 if ($item['gravity'] == GRAVITY_ACTIVITY) {
746 $item_profile = APContact::getByURL($item['author-link'], false);
748 $item_profile = APContact::getByURL($item['owner-link'], false);
751 if (empty($item_profile)) {
755 $profile_uid = User::getIdForURL($item_profile['url']);
757 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
758 if (empty($permissions[$element])) {
762 $blindcopy = in_array($element, ['bto', 'bcc']);
764 foreach ($permissions[$element] as $receiver) {
765 if (empty($receiver) || Network::isUrlBlocked($receiver)) {
769 if ($item_profile && ($receiver == $item_profile['followers']) && ($uid == $profile_uid)) {
770 $inboxes = array_merge($inboxes, self::fetchTargetInboxesforUser($uid, $personal));
772 if (Contact::isLocal($receiver)) {
776 $profile = APContact::getByURL($receiver, false);
777 if (!empty($profile)) {
778 if (empty($profile['sharedinbox']) || $personal || $blindcopy) {
779 $target = $profile['inbox'];
781 $target = $profile['sharedinbox'];
783 if (!self::archivedInbox($target)) {
784 $inboxes[$target] = $target;
795 * Creates an array in the structure of the item table for a given mail id
797 * @param integer $mail_id
802 public static function ItemArrayFromMail($mail_id)
804 $mail = DBA::selectFirst('mail', [], ['id' => $mail_id]);
805 if (!DBA::isResult($mail)) {
809 $mail['uri-id'] = ItemURI::insert(['uri' => $mail['uri'], 'guid' => $mail['guid']]);
811 $reply = DBA::selectFirst('mail', ['uri'], ['parent-uri' => $mail['parent-uri'], 'reply' => false]);
813 // Making the post more compatible for Mastodon by:
814 // - Making it a note and not an article (no title)
815 // - Moving the title into the "summary" field that is used as a "content warning"
816 $mail['body'] = '[abstract]' . $mail['title'] . "[/abstract]\n" . $mail['body'];
819 $mail['author-link'] = $mail['owner-link'] = $mail['from-url'];
820 $mail['allow_cid'] = '<'.$mail['contact-id'].'>';
821 $mail['allow_gid'] = '';
822 $mail['deny_cid'] = '';
823 $mail['deny_gid'] = '';
824 $mail['private'] = true;
825 $mail['deleted'] = false;
826 $mail['edited'] = $mail['created'];
827 $mail['plink'] = $mail['uri'];
828 $mail['thr-parent'] = $reply['uri'];
829 $mail['gravity'] = ($mail['reply'] ? GRAVITY_COMMENT: GRAVITY_PARENT);
831 $mail['event-type'] = '';
839 * Creates an activity array for a given mail id
841 * @param integer $mail_id
842 * @param boolean $object_mode Is the activity item is used inside another object?
844 * @return array of activity
847 public static function createActivityFromMail($mail_id, $object_mode = false)
849 $mail = self::ItemArrayFromMail($mail_id);
853 $object = self::createNote($mail);
856 $data = ['@context' => ActivityPub::CONTEXT];
861 $data['id'] = $mail['uri'] . '/Create';
862 $data['type'] = 'Create';
863 $data['actor'] = $mail['author-link'];
864 $data['published'] = DateTimeFormat::utc($mail['created'] . '+00:00', DateTimeFormat::ATOM);
865 $data['instrument'] = self::getService();
866 $data = array_merge($data, self::createPermissionBlockForItem($mail, true));
868 if (empty($data['to']) && !empty($data['cc'])) {
869 $data['to'] = $data['cc'];
872 if (empty($data['to']) && !empty($data['bcc'])) {
873 $data['to'] = $data['bcc'];
879 $object['to'] = $data['to'];
880 $object['tag'] = [['type' => 'Mention', 'href' => $object['to'][0], 'name' => '']];
882 unset($object['cc']);
883 unset($object['bcc']);
885 $data['directMessage'] = true;
887 $data['object'] = $object;
889 $owner = User::getOwnerDataById($mail['uid']);
891 if (!$object_mode && !empty($owner)) {
892 return LDSignature::sign($data, $owner);
899 * Returns the activity type of a given item
903 * @return string with activity type
904 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
905 * @throws \ImagickException
907 private static function getTypeOfItem($item)
911 // Only check for a reshare, if it is a real reshare and no quoted reshare
912 if (strpos($item['body'], "[share") === 0) {
913 $announce = self::getAnnounceArray($item);
914 $reshared = !empty($announce);
919 } elseif ($item['verb'] == Activity::POST) {
920 if ($item['created'] == $item['edited']) {
925 } elseif ($item['verb'] == Activity::LIKE) {
927 } elseif ($item['verb'] == Activity::DISLIKE) {
929 } elseif ($item['verb'] == Activity::ATTEND) {
931 } elseif ($item['verb'] == Activity::ATTENDNO) {
933 } elseif ($item['verb'] == Activity::ATTENDMAYBE) {
934 $type = 'TentativeAccept';
935 } elseif ($item['verb'] == Activity::FOLLOW) {
937 } elseif ($item['verb'] == Activity::TAG) {
939 } elseif ($item['verb'] == Activity::ANNOUNCE) {
949 * Creates the activity or fetches it from the cache
951 * @param integer $item_id
952 * @param boolean $force Force new cache entry
954 * @return array with the activity
957 public static function createCachedActivityFromItem($item_id, $force = false)
959 $cachekey = 'APDelivery:createActivity:' . $item_id;
962 $data = DI::cache()->get($cachekey);
963 if (!is_null($data)) {
968 $data = self::createActivityFromItem($item_id);
970 DI::cache()->set($cachekey, $data, Duration::QUARTER_HOUR);
975 * Creates an activity array for a given item id
977 * @param integer $item_id
978 * @param boolean $object_mode Is the activity item is used inside another object?
980 * @return array of activity
983 public static function createActivityFromItem($item_id, $object_mode = false)
985 Logger::info('Fetching activity', ['item' => $item_id]);
986 $item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
987 if (!DBA::isResult($item)) {
991 // In case of a forum post ensure to return the original post if author and forum are on the same machine
992 if (!empty($item['forum_mode'])) {
993 $author = Contact::getById($item['author-id'], ['nurl']);
994 if (!empty($author['nurl'])) {
995 $self = Contact::selectFirst(['uid'], ['nurl' => $author['nurl'], 'self' => true]);
996 if (!empty($self['uid'])) {
997 $item = Item::selectFirst([], ['uri-id' => $item['uri-id'], 'uid' => $self['uid']]);
1003 $condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
1004 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
1005 if (DBA::isResult($conversation)) {
1006 $data = json_decode($conversation['source'], true);
1007 if (!empty($data['type'])) {
1008 if (in_array($data['type'], ['Create', 'Update'])) {
1010 unset($data['@context']);
1011 unset($data['signature']);
1013 Logger::info('Return stored conversation', ['item' => $item_id]);
1015 } elseif (in_array('as:' . $data['type'], Receiver::CONTENT_TYPES)) {
1016 if (!empty($data['@context'])) {
1017 $context = $data['@context'];
1018 unset($data['@context']);
1020 unset($data['actor']);
1026 $type = self::getTypeOfItem($item);
1029 if (!$object_mode) {
1030 $data = ['@context' => $context ?? ActivityPub::CONTEXT];
1032 if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) {
1034 } elseif ($item['deleted']) {
1041 if (($item['gravity'] == GRAVITY_ACTIVITY) && ($type != 'Undo')) {
1042 $data['id'] = $item['uri'];
1044 $data['id'] = $item['uri'] . '/' . $type;
1047 $data['type'] = $type;
1049 if (($type != 'Announce') || ($item['gravity'] != GRAVITY_PARENT)) {
1050 $data['actor'] = $item['author-link'];
1052 $data['actor'] = $item['owner-link'];
1055 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1057 $data['instrument'] = self::getService();
1059 $data = array_merge($data, self::createPermissionBlockForItem($item, false));
1061 if (in_array($data['type'], ['Create', 'Update', 'Delete'])) {
1062 $data['object'] = $object ?? self::createNote($item);
1063 } elseif ($data['type'] == 'Add') {
1064 $data = self::createAddTag($item, $data);
1065 } elseif ($data['type'] == 'Announce') {
1066 if ($item['verb'] == ACTIVITY::ANNOUNCE) {
1067 $data['object'] = $item['thr-parent'];
1069 $data = self::createAnnounce($item, $data);
1071 } elseif ($data['type'] == 'Follow') {
1072 $data['object'] = $item['parent-uri'];
1073 } elseif ($data['type'] == 'Undo') {
1074 $data['object'] = self::createActivityFromItem($item_id, true);
1076 $data['diaspora:guid'] = $item['guid'];
1077 if (!empty($item['signed_text'])) {
1078 $data['diaspora:like'] = $item['signed_text'];
1080 $data['object'] = $item['thr-parent'];
1083 if (!empty($item['contact-uid'])) {
1084 $uid = $item['contact-uid'];
1086 $uid = $item['uid'];
1089 $owner = User::getOwnerDataById($uid);
1091 Logger::info('Fetched activity', ['item' => $item_id, 'uid' => $uid]);
1093 // We don't sign if we aren't the actor. This is important for relaying content especially for forums
1094 if (!$object_mode && !empty($owner) && ($data['actor'] == $owner['url'])) {
1095 return LDSignature::sign($data, $owner);
1100 /// @todo Create "conversation" entry
1104 * Creates a location entry for a given item array
1106 * @param array $item
1108 * @return array with location array
1110 private static function createLocation($item)
1112 $location = ['type' => 'Place'];
1114 if (!empty($item['location'])) {
1115 $location['name'] = $item['location'];
1120 if (empty($item['coord'])) {
1121 $coord = Map::getCoordinates($item['location']);
1123 $coords = explode(' ', $item['coord']);
1124 if (count($coords) == 2) {
1125 $coord = ['lat' => $coords[0], 'lon' => $coords[1]];
1129 if (!empty($coord['lat']) && !empty($coord['lon'])) {
1130 $location['latitude'] = $coord['lat'];
1131 $location['longitude'] = $coord['lon'];
1138 * Returns a tag array for a given item array
1140 * @param array $item
1142 * @return array of tags
1143 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1145 private static function createTagList($item)
1149 $terms = Tag::getByURIId($item['uri-id'], [Tag::HASHTAG, Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
1150 foreach ($terms as $term) {
1151 if ($term['type'] == Tag::HASHTAG) {
1152 $url = DI::baseUrl() . '/search?tag=' . urlencode($term['name']);
1153 $tags[] = ['type' => 'Hashtag', 'href' => $url, 'name' => '#' . $term['name']];
1155 $contact = Contact::getByURL($term['url'], false, ['addr']);
1156 if (empty($contact)) {
1159 if (!empty($contact['addr'])) {
1160 $mention = '@' . $contact['addr'];
1162 $mention = '@' . $term['url'];
1165 $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
1169 $announce = self::getAnnounceArray($item);
1170 // Mention the original author upon commented reshares
1171 if (!empty($announce['comment'])) {
1172 $tags[] = ['type' => 'Mention', 'href' => $announce['actor']['url'], 'name' => '@' . $announce['actor']['addr']];
1179 * Adds attachment data to the JSON document
1181 * @param array $item Data of the item that is to be posted
1182 * @param string $type Object type
1184 * @return array with attachment data
1185 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1187 private static function createAttachmentList($item, $type)
1191 // Currently deactivated, since it creates side effects on Mastodon and Pleroma.
1192 // It will be reactivated, once this cleared.
1194 $attach_data = BBCode::getAttachmentData($item['body']);
1195 if (!empty($attach_data['url'])) {
1196 $attachment = ['type' => 'Page',
1197 'mediaType' => 'text/html',
1198 'url' => $attach_data['url']];
1200 if (!empty($attach_data['title'])) {
1201 $attachment['name'] = $attach_data['title'];
1204 if (!empty($attach_data['description'])) {
1205 $attachment['summary'] = $attach_data['description'];
1208 if (!empty($attach_data['image'])) {
1209 $imgdata = Images::getInfoFromURLCached($attach_data['image']);
1211 $attachment['icon'] = ['type' => 'Image',
1212 'mediaType' => $imgdata['mime'],
1213 'width' => $imgdata[0],
1214 'height' => $imgdata[1],
1215 'url' => $attach_data['image']];
1219 $attachments[] = $attachment;
1222 foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT, Post\Media::TORRENT, Post\Media::UNKNOWN]) as $attachment) {
1223 $attachments[] = ['type' => 'Document',
1224 'mediaType' => $attachment['mimetype'],
1225 'url' => $attachment['url'],
1226 'name' => $attachment['description']];
1229 if ($type != 'Note') {
1230 return $attachments;
1233 foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO]) as $attachment) {
1234 $attachments[] = ['type' => 'Document',
1235 'mediaType' => $attachment['mimetype'],
1236 'url' => $attachment['url'],
1237 'name' => $attachment['description']];
1240 return $attachments;
1244 * Callback function to replace a Friendica style mention in a mention that is used on AP
1246 * @param array $match Matching values for the callback
1247 * @return string Replaced mention
1248 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1250 private static function mentionCallback($match)
1252 if (empty($match[1])) {
1256 $data = Contact::getByURL($match[1], false, ['url', 'nick']);
1257 if (empty($data['nick'])) {
1261 return '@[url=' . $data['url'] . ']' . $data['nick'] . '[/url]';
1265 * Remove image elements since they are added as attachment
1267 * @param string $body
1269 * @return string with removed images
1271 private static function removePictures($body)
1273 // Simplify image codes
1274 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
1275 $body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
1277 // Now remove local links
1278 $body = preg_replace_callback(
1279 '/\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]/Usi',
1281 // We remove the link when it is a link to a local photo page
1282 if (Photo::isLocalPage($match[1])) {
1285 // otherwise we just return the link
1286 return '[url]' . $match[1] . '[/url]';
1291 // Remove all pictures
1292 $body = preg_replace("/\[img\]([^\[\]]*)\[\/img\]/Usi", '', $body);
1298 * Fetches the "context" value for a givem item array from the "conversation" table
1300 * @param array $item
1302 * @return string with context url
1303 * @throws \Exception
1305 private static function fetchContextURLForItem($item)
1307 $conversation = DBA::selectFirst('conversation', ['conversation-href', 'conversation-uri'], ['item-uri' => $item['parent-uri']]);
1308 if (DBA::isResult($conversation) && !empty($conversation['conversation-href'])) {
1309 $context_uri = $conversation['conversation-href'];
1310 } elseif (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
1311 $context_uri = $conversation['conversation-uri'];
1313 $context_uri = $item['parent-uri'] . '#context';
1315 return $context_uri;
1319 * Returns if the post contains sensitive content ("nsfw")
1321 * @param integer $uri_id
1324 * @throws \Exception
1326 private static function isSensitive($uri_id)
1328 return DBA::exists('tag-view', ['uri-id' => $uri_id, 'name' => 'nsfw']);
1332 * Creates event data
1334 * @param array $item
1336 * @return array with the event data
1337 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1339 public static function createEvent($item)
1342 $event['name'] = $item['event-summary'];
1343 $event['content'] = BBCode::convert($item['event-desc'], false, BBCode::ACTIVITYPUB);
1344 $event['startTime'] = DateTimeFormat::utc($item['event-start'] . '+00:00', DateTimeFormat::ATOM);
1346 if (!$item['event-nofinish']) {
1347 $event['endTime'] = DateTimeFormat::utc($item['event-finish'] . '+00:00', DateTimeFormat::ATOM);
1350 if (!empty($item['event-location'])) {
1351 $item['location'] = $item['event-location'];
1352 $event['location'] = self::createLocation($item);
1359 * Creates a note/article object array
1361 * @param array $item
1363 * @return array with the object data
1364 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1365 * @throws \ImagickException
1367 public static function createNote($item)
1373 if ($item['event-type'] == 'event') {
1375 } elseif (!empty($item['title'])) {
1381 if ($item['deleted']) {
1382 $type = 'Tombstone';
1386 $data['id'] = $item['uri'];
1387 $data['type'] = $type;
1389 if ($item['deleted']) {
1393 $data['summary'] = BBCode::toPlaintext(BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB));
1395 if ($item['uri'] != $item['thr-parent']) {
1396 $data['inReplyTo'] = $item['thr-parent'];
1398 $data['inReplyTo'] = null;
1401 $data['diaspora:guid'] = $item['guid'];
1402 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1404 if ($item['created'] != $item['edited']) {
1405 $data['updated'] = DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM);
1408 $data['url'] = $item['plink'];
1409 $data['attributedTo'] = $item['author-link'];
1410 $data['sensitive'] = self::isSensitive($item['uri-id']);
1411 $data['context'] = self::fetchContextURLForItem($item);
1413 if (!empty($item['title'])) {
1414 $data['name'] = BBCode::toPlaintext($item['title'], false);
1417 $permission_block = self::createPermissionBlockForItem($item, false);
1419 $body = $item['body'];
1421 if ($type == 'Note') {
1422 $body = $item['raw-body'] ?? self::removePictures($body);
1423 } elseif (($type == 'Article') && empty($data['summary'])) {
1424 $data['summary'] = BBCode::toPlaintext(Plaintext::shorten(self::removePictures($body), 1000));
1427 if (empty($item['uid']) || !Feature::isEnabled($item['uid'], 'explicit_mentions')) {
1428 $body = self::prependMentions($body, $item['uri-id'], $item['author-link']);
1431 if ($type == 'Event') {
1432 $data = array_merge($data, self::createEvent($item));
1434 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1435 $body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
1437 $data['content'] = BBCode::convert($body, false, BBCode::ACTIVITYPUB);
1440 // The regular "content" field does contain a minimized HTML. This is done since systems like
1441 // Mastodon has got problems with - for example - embedded pictures.
1442 // The contentMap does contain the unmodified HTML.
1443 $language = self::getLanguage($item);
1444 if (!empty($language)) {
1445 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1446 $richbody = preg_replace_callback($regexp, ['self', 'mentionCallback'], $item['body']);
1447 $richbody = BBCode::removeAttachment($richbody);
1449 $data['contentMap'][$language] = BBCode::convert($richbody, false);
1452 $data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
1454 if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
1455 $data['diaspora:comment'] = $item['signed_text'];
1458 $data['attachment'] = self::createAttachmentList($item, $type);
1459 $data['tag'] = self::createTagList($item);
1461 if (empty($data['location']) && (!empty($item['coord']) || !empty($item['location']))) {
1462 $data['location'] = self::createLocation($item);
1465 if (!empty($item['app'])) {
1466 $data['generator'] = ['type' => 'Application', 'name' => $item['app']];
1469 $data = array_merge($data, $permission_block);
1475 * Fetches the language from the post, the user or the system.
1477 * @param array $item
1479 * @return string language string
1481 private static function getLanguage(array $item)
1483 // Try to fetch the language from the post itself
1484 if (!empty($item['language'])) {
1485 $languages = array_keys(json_decode($item['language'], true));
1486 if (!empty($languages[0])) {
1487 return $languages[0];
1491 // Otherwise use the user's language
1492 if (!empty($item['uid'])) {
1493 $user = DBA::selectFirst('user', ['language'], ['uid' => $item['uid']]);
1494 if (!empty($user['language'])) {
1495 return $user['language'];
1499 // And finally just use the system language
1500 return DI::config()->get('system', 'language');
1504 * Creates an an "add tag" entry
1506 * @param array $item
1507 * @param array $data activity data
1509 * @return array with activity data for adding tags
1510 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1511 * @throws \ImagickException
1513 private static function createAddTag($item, $data)
1515 $object = XML::parseString($item['object']);
1516 $target = XML::parseString($item["target"]);
1518 $data['diaspora:guid'] = $item['guid'];
1519 $data['actor'] = $item['author-link'];
1520 $data['target'] = (string)$target->id;
1521 $data['summary'] = BBCode::toPlaintext($item['body']);
1522 $data['object'] = ['id' => (string)$object->id, 'type' => 'tag', 'name' => (string)$object->title, 'content' => (string)$object->content];
1528 * Creates an announce object entry
1530 * @param array $item
1531 * @param array $data activity data
1533 * @return array with activity data
1534 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1535 * @throws \ImagickException
1537 private static function createAnnounce($item, $data)
1539 $orig_body = $item['body'];
1540 $announce = self::getAnnounceArray($item);
1541 if (empty($announce)) {
1542 $data['type'] = 'Create';
1543 $data['object'] = self::createNote($item);
1547 if (empty($announce['comment'])) {
1548 // Pure announce, without a quote
1549 $data['type'] = 'Announce';
1550 $data['object'] = $announce['object']['uri'];
1555 $data['type'] = 'Create';
1556 $item['body'] = $announce['comment'] . "\n" . $announce['object']['plink'];
1557 $data['object'] = self::createNote($item);
1559 /// @todo Finally descide how to implement this in AP. This is a possible way:
1560 $data['object']['attachment'][] = self::createNote($announce['object']);
1562 $data['object']['source']['content'] = $orig_body;
1567 * Return announce related data if the item is an annunce
1569 * @param array $item
1573 public static function getAnnounceArray($item)
1575 $reshared = Item::getShareArray($item);
1576 if (empty($reshared['guid'])) {
1580 $reshared_item = Item::selectFirst([], ['guid' => $reshared['guid']]);
1581 if (!DBA::isResult($reshared_item)) {
1585 if (!in_array($reshared_item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
1589 $profile = APContact::getByURL($reshared_item['author-link'], false);
1590 if (empty($profile)) {
1594 return ['object' => $reshared_item, 'actor' => $profile, 'comment' => $reshared['comment']];
1598 * Checks if the provided item array is an announce
1600 * @param array $item
1604 public static function isAnnounce($item)
1606 if (!empty($item['verb']) && ($item['verb'] == Activity::ANNOUNCE)) {
1610 $announce = self::getAnnounceArray($item);
1611 if (empty($announce)) {
1615 return empty($announce['comment']);
1619 * Creates an activity id for a given contact id
1621 * @param integer $cid Contact ID of target
1623 * @return bool|string activity id
1625 public static function activityIDFromContact($cid)
1627 $contact = DBA::selectFirst('contact', ['uid', 'id', 'created'], ['id' => $cid]);
1628 if (!DBA::isResult($contact)) {
1632 $hash = hash('ripemd128', $contact['uid'].'-'.$contact['id'].'-'.$contact['created']);
1633 $uuid = substr($hash, 0, 8). '-' . substr($hash, 8, 4) . '-' . substr($hash, 12, 4) . '-' . substr($hash, 16, 4) . '-' . substr($hash, 20, 12);
1634 return DI::baseUrl() . '/activity/' . $uuid;
1638 * Transmits a contact suggestion to a given inbox
1640 * @param integer $uid User ID
1641 * @param string $inbox Target inbox
1642 * @param integer $suggestion_id Suggestion ID
1644 * @return boolean was the transmission successful?
1645 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1647 public static function sendContactSuggestion($uid, $inbox, $suggestion_id)
1649 $owner = User::getOwnerDataById($uid);
1651 $suggestion = DI::fsuggest()->getById($suggestion_id);
1653 $data = ['@context' => ActivityPub::CONTEXT,
1654 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1655 'type' => 'Announce',
1656 'actor' => $owner['url'],
1657 'object' => $suggestion->url,
1658 'content' => $suggestion->note,
1659 'instrument' => self::getService(),
1660 'to' => [ActivityPub::PUBLIC_COLLECTION],
1663 $signed = LDSignature::sign($data, $owner);
1665 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1666 return HTTPSignature::transmit($signed, $inbox, $uid);
1670 * Transmits a profile relocation to a given inbox
1672 * @param integer $uid User ID
1673 * @param string $inbox Target inbox
1675 * @return boolean was the transmission successful?
1676 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1678 public static function sendProfileRelocation($uid, $inbox)
1680 $owner = User::getOwnerDataById($uid);
1682 $data = ['@context' => ActivityPub::CONTEXT,
1683 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1684 'type' => 'dfrn:relocate',
1685 'actor' => $owner['url'],
1686 'object' => $owner['url'],
1687 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1688 'instrument' => self::getService(),
1689 'to' => [ActivityPub::PUBLIC_COLLECTION],
1692 $signed = LDSignature::sign($data, $owner);
1694 Logger::log('Deliver profile relocation for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1695 return HTTPSignature::transmit($signed, $inbox, $uid);
1699 * Transmits a profile deletion to a given inbox
1701 * @param integer $uid User ID
1702 * @param string $inbox Target inbox
1704 * @return boolean was the transmission successful?
1705 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1707 public static function sendProfileDeletion($uid, $inbox)
1709 $owner = User::getOwnerDataById($uid);
1711 if (empty($owner)) {
1712 Logger::error('No owner data found, the deletion message cannot be processed.', ['user' => $uid]);
1716 if (empty($owner['uprvkey'])) {
1717 Logger::error('No private key for owner found, the deletion message cannot be processed.', ['user' => $uid]);
1721 $data = ['@context' => ActivityPub::CONTEXT,
1722 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1724 'actor' => $owner['url'],
1725 'object' => $owner['url'],
1726 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1727 'instrument' => self::getService(),
1728 'to' => [ActivityPub::PUBLIC_COLLECTION],
1731 $signed = LDSignature::sign($data, $owner);
1733 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1734 return HTTPSignature::transmit($signed, $inbox, $uid);
1738 * Transmits a profile change to a given inbox
1740 * @param integer $uid User ID
1741 * @param string $inbox Target inbox
1743 * @return boolean was the transmission successful?
1744 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1745 * @throws \ImagickException
1747 public static function sendProfileUpdate($uid, $inbox)
1749 $owner = User::getOwnerDataById($uid);
1750 $profile = APContact::getByURL($owner['url']);
1752 $data = ['@context' => ActivityPub::CONTEXT,
1753 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1755 'actor' => $owner['url'],
1756 'object' => self::getProfile($uid),
1757 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1758 'instrument' => self::getService(),
1759 'to' => [$profile['followers']],
1762 $signed = LDSignature::sign($data, $owner);
1764 Logger::log('Deliver profile update for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1765 return HTTPSignature::transmit($signed, $inbox, $uid);
1769 * Transmits a given activity to a target
1771 * @param string $activity Type name
1772 * @param string $target Target profile
1773 * @param integer $uid User ID
1775 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1776 * @throws \ImagickException
1777 * @throws \Exception
1779 public static function sendActivity($activity, $target, $uid, $id = '')
1781 $profile = APContact::getByURL($target);
1782 if (empty($profile['inbox'])) {
1783 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1787 $owner = User::getOwnerDataById($uid);
1790 $id = DI::baseUrl() . '/activity/' . System::createGUID();
1793 $data = ['@context' => ActivityPub::CONTEXT,
1795 'type' => $activity,
1796 'actor' => $owner['url'],
1797 'object' => $profile['url'],
1798 'instrument' => self::getService(),
1799 'to' => [$profile['url']]];
1801 Logger::log('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1803 $signed = LDSignature::sign($data, $owner);
1804 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1808 * Transmits a "follow object" activity to a target
1809 * This is a preparation for sending automated "follow" requests when receiving "Announce" messages
1811 * @param string $object Object URL
1812 * @param string $target Target profile
1813 * @param integer $uid User ID
1815 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1816 * @throws \ImagickException
1817 * @throws \Exception
1819 public static function sendFollowObject($object, $target, $uid = 0)
1821 $profile = APContact::getByURL($target);
1822 if (empty($profile['inbox'])) {
1823 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1828 // Fetch the list of administrators
1829 $admin_mail = explode(',', str_replace(' ', '', DI::config()->get('config', 'admin_email')));
1831 // We need to use some user as a sender. It doesn't care who it will send. We will use an administrator account.
1832 $condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false, 'email' => $admin_mail];
1833 $first_user = DBA::selectFirst('user', ['uid'], $condition);
1834 $uid = $first_user['uid'];
1837 $condition = ['verb' => Activity::FOLLOW, 'uid' => 0, 'parent-uri' => $object,
1838 'author-id' => Contact::getPublicIdByUserId($uid)];
1839 if (Item::exists($condition)) {
1840 Logger::log('Follow for ' . $object . ' for user ' . $uid . ' does already exist.', Logger::DEBUG);
1844 $owner = User::getOwnerDataById($uid);
1846 $data = ['@context' => ActivityPub::CONTEXT,
1847 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1849 'actor' => $owner['url'],
1850 'object' => $object,
1851 'instrument' => self::getService(),
1852 'to' => [$profile['url']]];
1854 Logger::log('Sending follow ' . $object . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1856 $signed = LDSignature::sign($data, $owner);
1857 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1861 * Transmit a message that the contact request had been accepted
1863 * @param string $target Target profile
1865 * @param integer $uid User ID
1866 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1867 * @throws \ImagickException
1869 public static function sendContactAccept($target, $id, $uid)
1871 $profile = APContact::getByURL($target);
1872 if (empty($profile['inbox'])) {
1873 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1877 $owner = User::getOwnerDataById($uid);
1878 $data = ['@context' => ActivityPub::CONTEXT,
1879 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1881 'actor' => $owner['url'],
1883 'id' => (string)$id,
1885 'actor' => $profile['url'],
1886 'object' => $owner['url']
1888 'instrument' => self::getService(),
1889 'to' => [$profile['url']]];
1891 Logger::debug('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id);
1893 $signed = LDSignature::sign($data, $owner);
1894 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1898 * Reject a contact request or terminates the contact relation
1900 * @param string $target Target profile
1902 * @param integer $uid User ID
1903 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1904 * @throws \ImagickException
1906 public static function sendContactReject($target, $id, $uid)
1908 $profile = APContact::getByURL($target);
1909 if (empty($profile['inbox'])) {
1910 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1914 $owner = User::getOwnerDataById($uid);
1915 $data = ['@context' => ActivityPub::CONTEXT,
1916 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1918 'actor' => $owner['url'],
1920 'id' => (string)$id,
1922 'actor' => $profile['url'],
1923 'object' => $owner['url']
1925 'instrument' => self::getService(),
1926 'to' => [$profile['url']]];
1928 Logger::debug('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id);
1930 $signed = LDSignature::sign($data, $owner);
1931 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1935 * Transmits a message that we don't want to follow this contact anymore
1937 * @param string $target Target profile
1938 * @param integer $uid User ID
1939 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1940 * @throws \ImagickException
1941 * @throws \Exception
1942 * @return bool success
1944 public static function sendContactUndo($target, $cid, $uid)
1946 $profile = APContact::getByURL($target);
1947 if (empty($profile['inbox'])) {
1948 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1952 $object_id = self::activityIDFromContact($cid);
1953 if (empty($object_id)) {
1957 $id = DI::baseUrl() . '/activity/' . System::createGUID();
1959 $owner = User::getOwnerDataById($uid);
1960 $data = ['@context' => ActivityPub::CONTEXT,
1963 'actor' => $owner['url'],
1964 'object' => ['id' => $object_id, 'type' => 'Follow',
1965 'actor' => $owner['url'],
1966 'object' => $profile['url']],
1967 'instrument' => self::getService(),
1968 'to' => [$profile['url']]];
1970 Logger::log('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, Logger::DEBUG);
1972 $signed = LDSignature::sign($data, $owner);
1973 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1976 private static function prependMentions($body, int $uriid, string $authorLink)
1980 foreach (Tag::getByURIId($uriid, [Tag::IMPLICIT_MENTION]) as $tag) {
1981 $profile = Contact::getByURL($tag['url'], false, ['addr', 'contact-type', 'nick']);
1982 if (!empty($profile['addr'])
1983 && $profile['contact-type'] != Contact::TYPE_COMMUNITY
1984 && !strstr($body, $profile['addr'])
1985 && !strstr($body, $tag['url'])
1986 && $tag['url'] !== $authorLink
1988 $mentions[] = '@[url=' . $tag['url'] . ']' . $profile['nick'] . '[/url]';
1992 $mentions[] = $body;
1994 return implode(' ', $mentions);