3 * @copyright Copyright (C) 2010-2021, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Protocol\ActivityPub;
24 use Friendica\Content\Feature;
25 use Friendica\Content\Text\BBCode;
26 use Friendica\Content\Text\Plaintext;
27 use Friendica\Core\Cache\Duration;
28 use Friendica\Core\Logger;
29 use Friendica\Core\Protocol;
30 use Friendica\Core\System;
31 use Friendica\Database\DBA;
33 use Friendica\Model\APContact;
34 use Friendica\Model\Contact;
35 use Friendica\Model\Conversation;
36 use Friendica\Model\GServer;
37 use Friendica\Model\Item;
38 use Friendica\Model\ItemURI;
39 use Friendica\Model\Profile;
40 use Friendica\Model\Photo;
41 use Friendica\Model\Post;
42 use Friendica\Model\Tag;
43 use Friendica\Model\User;
44 use Friendica\Protocol\Activity;
45 use Friendica\Protocol\ActivityPub;
46 use Friendica\Protocol\Relay;
47 use Friendica\Util\DateTimeFormat;
48 use Friendica\Util\HTTPSignature;
49 use Friendica\Util\JsonLD;
50 use Friendica\Util\LDSignature;
51 use Friendica\Util\Map;
52 use Friendica\Util\Network;
53 use Friendica\Util\XML;
56 * ActivityPub Transmitter Protocol class
64 * Add relay servers to the list of inboxes
66 * @param array $inboxes
67 * @return array inboxes with added relay servers
69 public static function addRelayServerInboxes(array $inboxes = [])
71 $contacts = DBA::select('apcontact', ['inbox'],
72 ["`type` = ? AND `url` IN (SELECT `url` FROM `contact` WHERE `uid` = ? AND `rel` = ?)",
73 'Application', 0, Contact::FRIEND]);
74 while ($contact = DBA::fetch($contacts)) {
75 $inboxes[$contact['inbox']] = $contact['inbox'];
77 DBA::close($contacts);
83 * Add relay servers to the list of inboxes
85 * @param array $inboxes
86 * @return array inboxes with added relay servers
88 public static function addRelayServerInboxesForItem(int $item_id, array $inboxes = [])
90 $item = Post::selectFirst(['uid'], ['id' => $item_id]);
95 $relays = Relay::getList($item_id, [], [Protocol::ACTIVITYPUB]);
100 foreach ($relays as $relay) {
101 $contact = Contact::getByURLForUser($relay['url'], $item['uid'], false, ['id']);
102 $inboxes[$relay['batch']][] = $contact['id'] ?? 0;
108 * Subscribe to a relay
110 * @param string $url Subscribe actor url
111 * @return bool success
113 public static function sendRelayFollow(string $url)
115 $contact = Contact::getByURL($url);
116 if (empty($contact)) {
120 $activity_id = ActivityPub\Transmitter::activityIDFromContact($contact['id']);
121 $success = ActivityPub\Transmitter::sendActivity('Follow', $url, 0, $activity_id);
123 DBA::update('contact', ['rel' => Contact::FRIEND], ['id' => $contact['id']]);
130 * Unsubscribe from a relay
132 * @param string $url Subscribe actor url
133 * @param bool $force Set the relay status as non follower even if unsubscribe hadn't worked
134 * @return bool success
136 public static function sendRelayUndoFollow(string $url, bool $force = false)
138 $contact = Contact::getByURL($url);
139 if (empty($contact)) {
143 $success = self::sendContactUndo($url, $contact['id'], 0);
144 if ($success || $force) {
145 DBA::update('contact', ['rel' => Contact::NOTHING], ['id' => $contact['id']]);
152 * Collects a list of contacts of the given owner
154 * @param array $owner Owner array
155 * @param int|array $rel The relevant value(s) contact.rel should match
156 * @param string $module The name of the relevant AP endpoint module (followers|following)
157 * @param integer $page Page number
159 * @return array of owners
162 public static function getContacts($owner, $rel, $module, $page = null)
166 'uid' => $owner['uid'],
174 $condition = DBA::buildCondition($parameters);
176 $sql = "SELECT COUNT(*) as `count`
178 JOIN `apcontact` ON `apcontact`.`url` = `contact`.`url`
181 $contacts = DBA::fetchFirst($sql, ...$parameters);
183 $modulePath = '/' . $module . '/';
185 $data = ['@context' => ActivityPub::CONTEXT];
186 $data['id'] = DI::baseUrl() . $modulePath . $owner['nickname'];
187 $data['type'] = 'OrderedCollection';
188 $data['totalItems'] = $contacts['count'];
190 // When we hide our friends we will only show the pure number but don't allow more.
191 $profile = Profile::getByUID($owner['uid']);
192 if (!empty($profile['hide-friends'])) {
197 $data['first'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=1';
199 $data['type'] = 'OrderedCollectionPage';
202 $sql = "SELECT `contact`.`url`
204 JOIN `apcontact` ON `apcontact`.`url` = `contact`.`url`
208 $parameters[] = ($page - 1) * 100;
211 $contacts = DBA::p($sql, ...$parameters);
212 while ($contact = DBA::fetch($contacts)) {
213 $list[] = $contact['url'];
215 DBA::close($contacts);
218 $data['next'] = DI::baseUrl() . $modulePath . $owner['nickname'] . '?page=' . ($page + 1);
221 $data['partOf'] = DI::baseUrl() . $modulePath . $owner['nickname'];
223 $data['orderedItems'] = $list;
230 * Public posts for the given owner
232 * @param array $owner Owner array
233 * @param integer $page Page number
234 * @param string $requester URL of requesting account
236 * @return array of posts
237 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
238 * @throws \ImagickException
240 public static function getOutbox($owner, $page = null, $requester = '')
242 $public_contact = Contact::getIdForURL($owner['url']);
243 $condition = ['uid' => 0, 'contact-id' => $public_contact,
244 'private' => [Item::PUBLIC, Item::UNLISTED]];
246 if (!empty($requester)) {
247 $requester_id = Contact::getIdForURL($requester, $owner['uid']);
248 if (!empty($requester_id)) {
249 $permissionSets = DI::permissionSet()->selectByContactId($requester_id, $owner['uid']);
250 if (!empty($permissionSets)) {
251 $condition = ['uid' => $owner['uid'], 'origin' => true,
252 'psid' => array_merge($permissionSets->column('id'),
253 [DI::permissionSet()->getIdFromACL($owner['uid'], '', '', '', '')])];
258 $condition = array_merge($condition,
259 ['author-id' => $public_contact,
260 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT],
261 'deleted' => false, 'visible' => true]);
263 $count = Post::count($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 = Post::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
279 while ($item = Post::fetch($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'];
291 $data['next'] = DI::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1);
294 $data['partOf'] = DI::baseUrl() . '/outbox/' . $owner['nickname'];
296 $data['orderedItems'] = $list;
303 * Return the service array containing information the used software and it's url
305 * @return array with service data
307 private static function getService()
309 return ['type' => 'Service',
310 'name' => FRIENDICA_PLATFORM . " '" . FRIENDICA_CODENAME . "' " . FRIENDICA_VERSION . '-' . DB_UPDATE_VERSION,
311 'url' => DI::baseUrl()->get()];
315 * Return the ActivityPub profile of the given user
317 * @param integer $uid User ID
318 * @return array with profile data
319 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
321 public static function getProfile($uid)
324 $condition = ['uid' => $uid, 'blocked' => false, 'account_expired' => false,
325 'account_removed' => false, 'verified' => true];
326 $fields = ['guid', 'nickname', 'pubkey', 'account-type', 'page-flags'];
327 $user = DBA::selectFirst('user', $fields, $condition);
328 if (!DBA::isResult($user)) {
332 $fields = ['locality', 'region', 'country-name'];
333 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid]);
334 if (!DBA::isResult($profile)) {
338 $fields = ['name', 'url', 'location', 'about', 'avatar', 'photo'];
339 $contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
340 if (!DBA::isResult($contact)) {
344 $contact = User::getSystemAccount();
345 $user = ['guid' => '', 'nickname' => $contact['nick'], 'pubkey' => $contact['pubkey'],
346 'account-type' => $contact['contact-type'], 'page-flags' => User::PAGE_FLAGS_NORMAL];
347 $profile = ['locality' => '', 'region' => '', 'country-name' => ''];
350 $data = ['@context' => ActivityPub::CONTEXT];
351 $data['id'] = $contact['url'];
353 if (!empty($user['guid'])) {
354 $data['diaspora:guid'] = $user['guid'];
357 $data['type'] = ActivityPub::ACCOUNT_TYPES[$user['account-type']];
360 $data['following'] = DI::baseUrl() . '/following/' . $user['nickname'];
361 $data['followers'] = DI::baseUrl() . '/followers/' . $user['nickname'];
362 $data['inbox'] = DI::baseUrl() . '/inbox/' . $user['nickname'];
363 $data['outbox'] = DI::baseUrl() . '/outbox/' . $user['nickname'];
365 $data['inbox'] = DI::baseUrl() . '/friendica/inbox';
368 $data['preferredUsername'] = $user['nickname'];
369 $data['name'] = $contact['name'];
371 if (!empty($profile['country-name'] . $profile['region'] . $profile['locality'])) {
372 $data['vcard:hasAddress'] = ['@type' => 'vcard:Home', 'vcard:country-name' => $profile['country-name'],
373 'vcard:region' => $profile['region'], 'vcard:locality' => $profile['locality']];
376 if (!empty($contact['about'])) {
377 $data['summary'] = BBCode::convert($contact['about'], false);
380 $data['url'] = $contact['url'];
381 $data['manuallyApprovesFollowers'] = in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL, User::PAGE_FLAGS_PRVGROUP]);
382 $data['publicKey'] = ['id' => $contact['url'] . '#main-key',
383 'owner' => $contact['url'],
384 'publicKeyPem' => $user['pubkey']];
385 $data['endpoints'] = ['sharedInbox' => DI::baseUrl() . '/inbox'];
386 $data['icon'] = ['type' => 'Image',
387 'url' => $contact['photo']];
389 $data['generator'] = self::getService();
391 // tags: https://kitty.town/@inmysocks/100656097926961126.json
396 * @param string $username
398 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
400 public static function getDeletedUser($username)
403 '@context' => ActivityPub::CONTEXT,
404 'id' => DI::baseUrl() . '/profile/' . $username,
405 'type' => 'Tombstone',
406 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
407 'updated' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
408 'deleted' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
413 * Returns an array with permissions of a given item array
417 * @return array with permissions
418 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
419 * @throws \ImagickException
421 private static function fetchPermissionBlockFromConversation($item)
423 if (empty($item['thr-parent'])) {
427 $condition = ['item-uri' => $item['thr-parent'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
428 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
429 if (!DBA::isResult($conversation)) {
433 $activity = json_decode($conversation['source'], true);
435 $actor = JsonLD::fetchElement($activity, 'actor', 'id');
436 if (!empty($actor)) {
437 $permissions['to'][] = $actor;
438 $profile = APContact::getByURL($actor);
443 $item_profile = APContact::getByURL($item['author-link']);
444 $exclude[] = $item['author-link'];
446 if ($item['gravity'] == GRAVITY_PARENT) {
447 $exclude[] = $item['owner-link'];
450 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
451 if (empty($activity[$element])) {
454 if (is_string($activity[$element])) {
455 $activity[$element] = [$activity[$element]];
458 foreach ($activity[$element] as $receiver) {
459 if (empty($receiver)) {
463 if (!empty($profile['followers']) && $receiver == $profile['followers'] && !empty($item_profile['followers'])) {
464 $permissions[$element][] = $item_profile['followers'];
465 } elseif (!in_array($receiver, $exclude)) {
466 $permissions[$element][] = $receiver;
474 * Check if the given item id is from ActivityPub
476 * @param integer $item_id
477 * @return boolean "true" if the post is from ActivityPub
479 private static function isAPPost(int $item_id)
481 if (empty($item_id)) {
485 return Post::exists(['id' => $item_id, 'network' => Protocol::ACTIVITYPUB]);
489 * Creates an array of permissions from an item thread
491 * @param array $item Item array
492 * @param boolean $blindcopy addressing via "bcc" or "cc"?
493 * @param integer $last_id Last item id for adding receivers
494 * @param boolean $forum_mode "true" means that we are sending content to a forum
496 * @return array with permission data
497 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
498 * @throws \ImagickException
500 private static function createPermissionBlockForItem($item, $blindcopy, $last_id = 0, $forum_mode = false)
503 $last_id = $item['id'];
508 // Check if we should always deliver our stuff via BCC
509 if (!empty($item['uid'])) {
510 $profile = User::getOwnerDataById($item['uid']);
511 if (!empty($profile)) {
512 $always_bcc = $profile['hide-friends'];
516 if (DI::config()->get('system', 'ap_always_bcc')) {
520 if (self::isAnnounce($item) || DI::config()->get('debug', 'total_ap_delivery') || self::isAPPost($last_id)) {
521 // Will be activated in a later step
522 $networks = Protocol::FEDERATED;
524 // For now only send to these contacts:
525 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
528 $data = ['to' => [], 'cc' => [], 'bcc' => []];
530 if ($item['gravity'] == GRAVITY_PARENT) {
531 $actor_profile = APContact::getByURL($item['owner-link']);
533 $actor_profile = APContact::getByURL($item['author-link']);
538 $terms = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
540 if ($item['private'] != Item::PRIVATE) {
541 // Directly mention the original author upon a quoted reshare.
542 // Else just ensure that the original author receives the reshare.
543 $announce = self::getAnnounceArray($item);
544 if (!empty($announce['comment'])) {
545 $data['to'][] = $announce['actor']['url'];
546 } elseif (!empty($announce)) {
547 $data['cc'][] = $announce['actor']['url'];
550 $data = array_merge($data, self::fetchPermissionBlockFromConversation($item));
552 // Check if the item is completely public or unlisted
553 if ($item['private'] == Item::PUBLIC) {
554 $data['to'][] = ActivityPub::PUBLIC_COLLECTION;
556 $data['cc'][] = ActivityPub::PUBLIC_COLLECTION;
559 foreach ($terms as $term) {
560 $profile = APContact::getByURL($term['url'], false);
561 if (!empty($profile)) {
562 if ($term['type'] == Tag::EXCLUSIVE_MENTION) {
564 if (!empty($profile['followers']) && ($profile['type'] == 'Group')) {
565 $data['cc'][] = $profile['followers'];
568 $data['to'][] = $profile['url'];
572 $receiver_list = Item::enumeratePermissions($item, true);
574 foreach ($terms as $term) {
575 $cid = Contact::getIdForURL($term['url'], $item['uid']);
576 if (!empty($cid) && in_array($cid, $receiver_list)) {
577 $contact = DBA::selectFirst('contact', ['url', 'network', 'protocol', 'gsid'], ['id' => $cid, 'network' => Protocol::FEDERATED]);
578 if (!DBA::isResult($contact) || !self::isAPContact($contact, $networks)) {
582 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
583 $data['to'][] = $profile['url'];
588 foreach ($receiver_list as $receiver) {
589 $contact = DBA::selectFirst('contact', ['url', 'hidden', 'network', 'protocol', 'gsid'], ['id' => $receiver, 'network' => Protocol::FEDERATED]);
590 if (!DBA::isResult($contact) || !self::isAPContact($contact, $networks)) {
594 if (!empty($profile = APContact::getByURL($contact['url'], false))) {
595 if ($contact['hidden'] || $always_bcc) {
596 $data['bcc'][] = $profile['url'];
598 $data['cc'][] = $profile['url'];
604 if (!empty($item['parent'])) {
605 $parents = Post::select(['id', 'author-link', 'owner-link', 'gravity', 'uri'], ['parent' => $item['parent']]);
606 while ($parent = Post::fetch($parents)) {
607 if ($parent['gravity'] == GRAVITY_PARENT) {
608 $profile = APContact::getByURL($parent['owner-link'], false);
609 if (!empty($profile)) {
610 if ($item['gravity'] != GRAVITY_PARENT) {
611 // Comments to forums are directed to the forum
612 // But comments to forums aren't directed to the followers collection
613 // This rule is only valid when the actor isn't the forum.
614 // The forum needs to transmit their content to their followers.
615 if (($profile['type'] == 'Group') && ($profile['url'] != $actor_profile['url'])) {
616 $data['to'][] = $profile['url'];
618 $data['cc'][] = $profile['url'];
619 if (($item['private'] != Item::PRIVATE) && !empty($actor_profile['followers'])) {
620 $data['cc'][] = $actor_profile['followers'];
623 } elseif (!$exclusive) {
624 // Public thread parent post always are directed to the followers.
625 // This mustn't be done by posts that are directed to forum servers via the exclusive mention.
626 // But possibly in that case we could add the "followers" collection of the forum to the message.
627 if (($item['private'] != Item::PRIVATE) && !$forum_mode) {
628 $data['cc'][] = $actor_profile['followers'];
634 // Don't include data from future posts
635 if ($parent['id'] >= $last_id) {
639 $profile = APContact::getByURL($parent['author-link'], false);
640 if (!empty($profile)) {
641 if (($profile['type'] == 'Group') || ($parent['uri'] == $item['thr-parent'])) {
642 $data['to'][] = $profile['url'];
644 $data['cc'][] = $profile['url'];
648 DBA::close($parents);
651 $data['to'] = array_unique($data['to']);
652 $data['cc'] = array_unique($data['cc']);
653 $data['bcc'] = array_unique($data['bcc']);
655 if (($key = array_search($item['author-link'], $data['to'])) !== false) {
656 unset($data['to'][$key]);
659 if (($key = array_search($item['author-link'], $data['cc'])) !== false) {
660 unset($data['cc'][$key]);
663 if (($key = array_search($item['author-link'], $data['bcc'])) !== false) {
664 unset($data['bcc'][$key]);
667 foreach ($data['to'] as $to) {
668 if (($key = array_search($to, $data['cc'])) !== false) {
669 unset($data['cc'][$key]);
672 if (($key = array_search($to, $data['bcc'])) !== false) {
673 unset($data['bcc'][$key]);
677 foreach ($data['cc'] as $cc) {
678 if (($key = array_search($cc, $data['bcc'])) !== false) {
679 unset($data['bcc'][$key]);
683 $receivers = ['to' => array_values($data['to']), 'cc' => array_values($data['cc']), 'bcc' => array_values($data['bcc'])];
686 unset($receivers['bcc']);
693 * Check if an inbox is archived
695 * @param string $url Inbox url
697 * @return boolean "true" if inbox is archived
699 public static function archivedInbox($url)
701 return DBA::exists('inbox-status', ['url' => $url, 'archive' => true]);
705 * Check if a given contact should be delivered via AP
707 * @param array $contact
708 * @param array $networks
712 private static function isAPContact(array $contact, array $networks)
714 if (in_array($contact['network'], $networks) || ($contact['protocol'] == Protocol::ACTIVITYPUB)) {
718 return GServer::getProtocol($contact['gsid'] ?? 0) == Post\DeliveryData::ACTIVITYPUB;
722 * Fetches a list of inboxes of followers of a given user
724 * @param integer $uid User ID
725 * @param boolean $personal fetch personal inboxes
726 * @param boolean $all_ap Retrieve all AP enabled inboxes
728 * @return array of follower inboxes
729 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
730 * @throws \ImagickException
732 public static function fetchTargetInboxesforUser($uid, $personal = false, bool $all_ap = false)
738 if (!empty($item['uid'])) {
739 $profile = User::getOwnerDataById($item['uid']);
740 if (!empty($profile)) {
741 $isforum = $profile['account-type'] == User::ACCOUNT_TYPE_COMMUNITY;
745 if (DI::config()->get('debug', 'total_ap_delivery') || $all_ap) {
746 // Will be activated in a later step
747 $networks = Protocol::FEDERATED;
749 // For now only send to these contacts:
750 $networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
753 $condition = ['uid' => $uid, 'archive' => false, 'pending' => false, 'blocked' => false, 'network' => Protocol::FEDERATED];
756 $condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
759 $contacts = DBA::select('contact', ['id', 'url', 'network', 'protocol', 'gsid'], $condition);
760 while ($contact = DBA::fetch($contacts)) {
761 if (!self::isAPContact($contact, $networks)) {
765 if ($isforum && ($contact['network'] == Protocol::DFRN)) {
769 if (Network::isUrlBlocked($contact['url'])) {
773 $profile = APContact::getByURL($contact['url'], false);
774 if (!empty($profile)) {
775 if (empty($profile['sharedinbox']) || $personal || Contact::isLocal($contact['url'])) {
776 $target = $profile['inbox'];
778 $target = $profile['sharedinbox'];
780 if (!self::archivedInbox($target)) {
781 $inboxes[$target][] = $contact['id'];
785 DBA::close($contacts);
791 * Fetches an array of inboxes for the given item and user
793 * @param array $item Item array
794 * @param integer $uid User ID
795 * @param boolean $personal fetch personal inboxes
796 * @param integer $last_id Last item id for adding receivers
797 * @param boolean $forum_mode "true" means that we are sending content to a forum
798 * @return array with inboxes
799 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
800 * @throws \ImagickException
802 public static function fetchTargetInboxes($item, $uid, $personal = false, $last_id = 0, $forum_mode = false)
804 $permissions = self::createPermissionBlockForItem($item, true, $last_id, $forum_mode);
805 if (empty($permissions)) {
811 if ($item['gravity'] == GRAVITY_ACTIVITY) {
812 $item_profile = APContact::getByURL($item['author-link'], false);
814 $item_profile = APContact::getByURL($item['owner-link'], false);
817 if (empty($item_profile)) {
821 $profile_uid = User::getIdForURL($item_profile['url']);
823 foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
824 if (empty($permissions[$element])) {
828 $blindcopy = in_array($element, ['bto', 'bcc']);
830 foreach ($permissions[$element] as $receiver) {
831 if (empty($receiver) || Network::isUrlBlocked($receiver)) {
835 if ($item_profile && ($receiver == $item_profile['followers']) && ($uid == $profile_uid)) {
836 $inboxes = array_merge($inboxes, self::fetchTargetInboxesforUser($uid, $personal, self::isAPPost($last_id)));
838 $profile = APContact::getByURL($receiver, false);
839 if (!empty($profile)) {
840 $contact = Contact::getByURLForUser($receiver, $uid, false, ['id']);
842 if (empty($profile['sharedinbox']) || $personal || $blindcopy || Contact::isLocal($receiver)) {
843 $target = $profile['inbox'];
845 $target = $profile['sharedinbox'];
847 if (!self::archivedInbox($target)) {
848 $inboxes[$target][] = $contact['id'] ?? 0;
859 * Creates an array in the structure of the item table for a given mail id
861 * @param integer $mail_id
866 public static function ItemArrayFromMail($mail_id, $use_title = false)
868 $mail = DBA::selectFirst('mail', [], ['id' => $mail_id]);
869 if (!DBA::isResult($mail)) {
873 $reply = DBA::selectFirst('mail', ['uri', 'uri-id', 'from-url'], ['parent-uri' => $mail['parent-uri'], 'reply' => false]);
875 // Making the post more compatible for Mastodon by:
876 // - Making it a note and not an article (no title)
877 // - Moving the title into the "summary" field that is used as a "content warning"
880 $mail['body'] = '[abstract]' . $mail['title'] . "[/abstract]\n" . $mail['body'];
884 $mail['author-link'] = $mail['owner-link'] = $mail['from-url'];
885 $mail['owner-id'] = $mail['author-id'];
886 $mail['allow_cid'] = '<'.$mail['contact-id'].'>';
887 $mail['allow_gid'] = '';
888 $mail['deny_cid'] = '';
889 $mail['deny_gid'] = '';
890 $mail['private'] = Item::PRIVATE;
891 $mail['deleted'] = false;
892 $mail['edited'] = $mail['created'];
893 $mail['plink'] = DI::baseUrl() . '/message/' . $mail['id'];
894 $mail['parent-uri'] = $reply['uri'];
895 $mail['parent-uri-id'] = $reply['uri-id'];
896 $mail['parent-author-id'] = Contact::getIdForURL($reply['from-url'], 0, false);
897 $mail['gravity'] = ($mail['reply'] ? GRAVITY_COMMENT: GRAVITY_PARENT);
898 $mail['event-type'] = '';
899 $mail['language'] = '';
906 * Creates an activity array for a given mail id
908 * @param integer $mail_id
909 * @param boolean $object_mode Is the activity item is used inside another object?
911 * @return array of activity
914 public static function createActivityFromMail($mail_id, $object_mode = false)
916 $mail = self::ItemArrayFromMail($mail_id);
920 $object = self::createNote($mail);
923 $data = ['@context' => ActivityPub::CONTEXT];
928 $data['id'] = $mail['uri'] . '/Create';
929 $data['type'] = 'Create';
930 $data['actor'] = $mail['author-link'];
931 $data['published'] = DateTimeFormat::utc($mail['created'] . '+00:00', DateTimeFormat::ATOM);
932 $data['instrument'] = self::getService();
933 $data = array_merge($data, self::createPermissionBlockForItem($mail, true));
935 if (empty($data['to']) && !empty($data['cc'])) {
936 $data['to'] = $data['cc'];
939 if (empty($data['to']) && !empty($data['bcc'])) {
940 $data['to'] = $data['bcc'];
946 $object['to'] = $data['to'];
947 $object['tag'] = [['type' => 'Mention', 'href' => $object['to'][0], 'name' => '']];
949 unset($object['cc']);
950 unset($object['bcc']);
952 $data['directMessage'] = true;
954 $data['object'] = $object;
956 $owner = User::getOwnerDataById($mail['uid']);
958 if (!$object_mode && !empty($owner)) {
959 return LDSignature::sign($data, $owner);
966 * Returns the activity type of a given item
970 * @return string with activity type
971 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
972 * @throws \ImagickException
974 private static function getTypeOfItem($item)
978 // Only check for a reshare, if it is a real reshare and no quoted reshare
979 if (strpos($item['body'], "[share") === 0) {
980 $announce = self::getAnnounceArray($item);
981 $reshared = !empty($announce);
986 } elseif ($item['verb'] == Activity::POST) {
987 if ($item['created'] == $item['edited']) {
992 } elseif ($item['verb'] == Activity::LIKE) {
994 } elseif ($item['verb'] == Activity::DISLIKE) {
996 } elseif ($item['verb'] == Activity::ATTEND) {
998 } elseif ($item['verb'] == Activity::ATTENDNO) {
1000 } elseif ($item['verb'] == Activity::ATTENDMAYBE) {
1001 $type = 'TentativeAccept';
1002 } elseif ($item['verb'] == Activity::FOLLOW) {
1004 } elseif ($item['verb'] == Activity::TAG) {
1006 } elseif ($item['verb'] == Activity::ANNOUNCE) {
1016 * Creates the activity or fetches it from the cache
1018 * @param integer $item_id
1019 * @param boolean $force Force new cache entry
1021 * @return array with the activity
1022 * @throws \Exception
1024 public static function createCachedActivityFromItem($item_id, $force = false)
1026 $cachekey = 'APDelivery:createActivity:' . $item_id;
1029 $data = DI::cache()->get($cachekey);
1030 if (!is_null($data)) {
1035 $data = self::createActivityFromItem($item_id);
1037 DI::cache()->set($cachekey, $data, Duration::QUARTER_HOUR);
1042 * Creates an activity array for a given item id
1044 * @param integer $item_id
1045 * @param boolean $object_mode Is the activity item is used inside another object?
1047 * @return false|array
1048 * @throws \Exception
1050 public static function createActivityFromItem(int $item_id, bool $object_mode = false)
1052 Logger::info('Fetching activity', ['item' => $item_id]);
1053 $item = Post::selectFirst(Item::DELIVER_FIELDLIST, ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
1054 if (!DBA::isResult($item)) {
1058 // In case of a forum post ensure to return the original post if author and forum are on the same machine
1059 if (($item['gravity'] == GRAVITY_PARENT) && !empty($item['forum_mode'])) {
1060 $author = Contact::getById($item['author-id'], ['nurl']);
1061 if (!empty($author['nurl'])) {
1062 $self = Contact::selectFirst(['uid'], ['nurl' => $author['nurl'], 'self' => true]);
1063 if (!empty($self['uid'])) {
1064 $forum_item = Post::selectFirst(Item::DELIVER_FIELDLIST, ['uri-id' => $item['uri-id'], 'uid' => $self['uid']]);
1065 if (DBA::isResult($forum_item)) {
1066 $item = $forum_item;
1072 if (empty($item['uri-id'])) {
1073 Logger::warning('Item without uri-id', ['item' => $item]);
1077 if (!$item['deleted']) {
1078 $condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
1079 $conversation = DBA::selectFirst('conversation', ['source'], $condition);
1080 if (!$item['origin'] && DBA::isResult($conversation)) {
1081 $data = json_decode($conversation['source'], true);
1082 if (!empty($data['type'])) {
1083 if (in_array($data['type'], ['Create', 'Update'])) {
1085 unset($data['@context']);
1086 unset($data['signature']);
1088 Logger::info('Return stored conversation', ['item' => $item_id]);
1090 } elseif (in_array('as:' . $data['type'], Receiver::CONTENT_TYPES)) {
1091 if (!empty($data['@context'])) {
1092 $context = $data['@context'];
1093 unset($data['@context']);
1095 unset($data['actor']);
1102 $type = self::getTypeOfItem($item);
1104 if (!$object_mode) {
1105 $data = ['@context' => $context ?? ActivityPub::CONTEXT];
1107 if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) {
1109 } elseif ($item['deleted']) {
1116 if ($type == 'Delete') {
1117 $data['id'] = Item::newURI($item['uid'], $item['guid']) . '/' . $type;;
1118 } elseif (($item['gravity'] == GRAVITY_ACTIVITY) && ($type != 'Undo')) {
1119 $data['id'] = $item['uri'];
1121 $data['id'] = $item['uri'] . '/' . $type;
1124 $data['type'] = $type;
1126 if (($type != 'Announce') || ($item['gravity'] != GRAVITY_PARENT)) {
1127 $data['actor'] = $item['author-link'];
1129 $data['actor'] = $item['owner-link'];
1132 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1134 $data['instrument'] = self::getService();
1136 $data = array_merge($data, self::createPermissionBlockForItem($item, false));
1138 if (in_array($data['type'], ['Create', 'Update', 'Delete'])) {
1139 $data['object'] = $object ?? self::createNote($item);
1140 } elseif ($data['type'] == 'Add') {
1141 $data = self::createAddTag($item, $data);
1142 } elseif ($data['type'] == 'Announce') {
1143 if ($item['verb'] == ACTIVITY::ANNOUNCE) {
1144 $data['object'] = $item['thr-parent'];
1146 $data = self::createAnnounce($item, $data);
1148 } elseif ($data['type'] == 'Follow') {
1149 $data['object'] = $item['parent-uri'];
1150 } elseif ($data['type'] == 'Undo') {
1151 $data['object'] = self::createActivityFromItem($item_id, true);
1153 $data['diaspora:guid'] = $item['guid'];
1154 if (!empty($item['signed_text'])) {
1155 $data['diaspora:like'] = $item['signed_text'];
1157 $data['object'] = $item['thr-parent'];
1160 if (!empty($item['contact-uid'])) {
1161 $uid = $item['contact-uid'];
1163 $uid = $item['uid'];
1166 $owner = User::getOwnerDataById($uid);
1168 Logger::info('Fetched activity', ['item' => $item_id, 'uid' => $uid]);
1170 // We don't sign if we aren't the actor. This is important for relaying content especially for forums
1171 if (!$object_mode && !empty($owner) && ($data['actor'] == $owner['url'])) {
1172 return LDSignature::sign($data, $owner);
1177 /// @todo Create "conversation" entry
1181 * Creates a location entry for a given item array
1183 * @param array $item
1185 * @return array with location array
1187 private static function createLocation($item)
1189 $location = ['type' => 'Place'];
1191 if (!empty($item['location'])) {
1192 $location['name'] = $item['location'];
1197 if (empty($item['coord'])) {
1198 $coord = Map::getCoordinates($item['location']);
1200 $coords = explode(' ', $item['coord']);
1201 if (count($coords) == 2) {
1202 $coord = ['lat' => $coords[0], 'lon' => $coords[1]];
1206 if (!empty($coord['lat']) && !empty($coord['lon'])) {
1207 $location['latitude'] = $coord['lat'];
1208 $location['longitude'] = $coord['lon'];
1215 * Returns a tag array for a given item array
1217 * @param array $item
1219 * @return array of tags
1220 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1222 private static function createTagList($item)
1226 $terms = Tag::getByURIId($item['uri-id'], [Tag::HASHTAG, Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
1227 foreach ($terms as $term) {
1228 if ($term['type'] == Tag::HASHTAG) {
1229 $url = DI::baseUrl() . '/search?tag=' . urlencode($term['name']);
1230 $tags[] = ['type' => 'Hashtag', 'href' => $url, 'name' => '#' . $term['name']];
1232 $contact = Contact::getByURL($term['url'], false, ['addr']);
1233 if (empty($contact)) {
1236 if (!empty($contact['addr'])) {
1237 $mention = '@' . $contact['addr'];
1239 $mention = '@' . $term['url'];
1242 $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
1246 $announce = self::getAnnounceArray($item);
1247 // Mention the original author upon commented reshares
1248 if (!empty($announce['comment'])) {
1249 $tags[] = ['type' => 'Mention', 'href' => $announce['actor']['url'], 'name' => '@' . $announce['actor']['addr']];
1256 * Adds attachment data to the JSON document
1258 * @param array $item Data of the item that is to be posted
1259 * @param string $type Object type
1261 * @return array with attachment data
1262 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1264 private static function createAttachmentList($item, $type)
1268 $uriids = [$item['uri-id']];
1269 $shared = BBCode::fetchShareAttributes($item['body']);
1270 if (!empty($shared['guid'])) {
1271 $shared_item = Post::selectFirst(['uri-id'], ['guid' => $shared['guid']]);
1272 if (!empty($shared_item['uri-id'])) {
1273 $uriids[] = $shared_item['uri-id'];
1278 foreach ($uriids as $uriid) {
1279 foreach (Post\Media::getByURIId($uriid, [Post\Media::DOCUMENT, Post\Media::TORRENT]) as $attachment) {
1280 if (in_array($attachment['url'], $urls)) {
1283 $urls[] = $attachment['url'];
1285 $attachments[] = ['type' => 'Document',
1286 'mediaType' => $attachment['mimetype'],
1287 'url' => $attachment['url'],
1288 'name' => $attachment['description']];
1292 if ($type != 'Note') {
1293 return $attachments;
1296 foreach ($uriids as $uriid) {
1297 foreach (Post\Media::getByURIId($uriid, [Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO]) as $attachment) {
1298 if (in_array($attachment['url'], $urls)) {
1301 $urls[] = $attachment['url'];
1303 $attachments[] = ['type' => 'Document',
1304 'mediaType' => $attachment['mimetype'],
1305 'url' => $attachment['url'],
1306 'name' => $attachment['description']];
1308 // Currently deactivated, since it creates side effects on Mastodon and Pleroma.
1309 // It will be activated, once this cleared.
1311 foreach (Post\Media::getByURIId($uriid, [Post\Media::HTML]) as $attachment) {
1312 if (in_array($attachment['url'], $urls)) {
1315 $urls[] = $attachment['url'];
1317 $attachments[] = ['type' => 'Page',
1318 'mediaType' => $attachment['mimetype'],
1319 'url' => $attachment['url'],
1320 'name' => $attachment['description']];
1324 return $attachments;
1328 * Callback function to replace a Friendica style mention in a mention that is used on AP
1330 * @param array $match Matching values for the callback
1331 * @return string Replaced mention
1332 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1334 private static function mentionCallback($match)
1336 if (empty($match[1])) {
1340 $data = Contact::getByURL($match[1], false, ['url', 'alias', 'nick']);
1341 if (empty($data['nick'])) {
1345 return '[url=' . $data['url'] . ']@' . $data['nick'] . '[/url]';
1349 * Callback function to replace a Friendica style mention in a mention for a summary
1351 * @param array $match Matching values for the callback
1352 * @return string Replaced mention
1353 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1355 private static function mentionAddrCallback($match)
1357 if (empty($match[1])) {
1361 $data = Contact::getByURL($match[1], false, ['addr']);
1362 if (empty($data['addr'])) {
1366 return '@' . $data['addr'];
1370 * Remove image elements since they are added as attachment
1372 * @param string $body
1374 * @return string with removed images
1376 private static function removePictures($body)
1378 // Simplify image codes
1379 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
1380 $body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
1382 // Now remove local links
1383 $body = preg_replace_callback(
1384 '/\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]/Usi',
1386 // We remove the link when it is a link to a local photo page
1387 if (Photo::isLocalPage($match[1])) {
1390 // otherwise we just return the link
1391 return '[url]' . $match[1] . '[/url]';
1396 // Remove all pictures
1397 $body = preg_replace("/\[img\]([^\[\]]*)\[\/img\]/Usi", '', $body);
1403 * Fetches the "context" value for a givem item array from the "conversation" table
1405 * @param array $item
1407 * @return string with context url
1408 * @throws \Exception
1410 private static function fetchContextURLForItem($item)
1412 $conversation = DBA::selectFirst('conversation', ['conversation-href', 'conversation-uri'], ['item-uri' => $item['parent-uri']]);
1413 if (DBA::isResult($conversation) && !empty($conversation['conversation-href'])) {
1414 $context_uri = $conversation['conversation-href'];
1415 } elseif (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
1416 $context_uri = $conversation['conversation-uri'];
1418 $context_uri = $item['parent-uri'] . '#context';
1420 return $context_uri;
1424 * Returns if the post contains sensitive content ("nsfw")
1426 * @param integer $uri_id
1429 * @throws \Exception
1431 private static function isSensitive($uri_id)
1433 return DBA::exists('tag-view', ['uri-id' => $uri_id, 'name' => 'nsfw']);
1437 * Creates event data
1439 * @param array $item
1441 * @return array with the event data
1442 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1444 private static function createEvent($item)
1447 $event['name'] = $item['event-summary'];
1448 $event['content'] = BBCode::convert($item['event-desc'], false, BBCode::ACTIVITYPUB);
1449 $event['startTime'] = DateTimeFormat::utc($item['event-start'] . '+00:00', DateTimeFormat::ATOM);
1451 if (!$item['event-nofinish']) {
1452 $event['endTime'] = DateTimeFormat::utc($item['event-finish'] . '+00:00', DateTimeFormat::ATOM);
1455 if (!empty($item['event-location'])) {
1456 $item['location'] = $item['event-location'];
1457 $event['location'] = self::createLocation($item);
1460 $event['dfrn:adjust'] = (bool)$item['event-adjust'];
1466 * Creates a note/article object array
1468 * @param array $item
1470 * @return array with the object data
1471 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1472 * @throws \ImagickException
1474 public static function createNote($item)
1480 if ($item['event-type'] == 'event') {
1482 } elseif (!empty($item['title'])) {
1488 if ($item['deleted']) {
1489 $type = 'Tombstone';
1493 $data['id'] = $item['uri'];
1494 $data['type'] = $type;
1496 if ($item['deleted']) {
1500 $data['summary'] = BBCode::toPlaintext(BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB));
1502 if ($item['uri'] != $item['thr-parent']) {
1503 $data['inReplyTo'] = $item['thr-parent'];
1505 $data['inReplyTo'] = null;
1508 $data['diaspora:guid'] = $item['guid'];
1509 $data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
1511 if ($item['created'] != $item['edited']) {
1512 $data['updated'] = DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM);
1515 $data['url'] = $item['plink'];
1516 $data['attributedTo'] = $item['author-link'];
1517 $data['sensitive'] = self::isSensitive($item['uri-id']);
1518 $data['context'] = self::fetchContextURLForItem($item);
1520 if (!empty($item['title'])) {
1521 $data['name'] = BBCode::toPlaintext($item['title'], false);
1524 $permission_block = self::createPermissionBlockForItem($item, false);
1526 $body = $item['body'];
1528 if ($type == 'Note') {
1529 $body = $item['raw-body'] ?? self::removePictures($body);
1533 * @todo Improve the automated summary
1534 * This part is currently deactivated. The automated summary seems to be more
1535 * confusing than helping. But possibly we will find a better way.
1536 * So the code is left here for now as a reminder
1538 * } elseif (($type == 'Article') && empty($data['summary'])) {
1539 * $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1540 * $summary = preg_replace_callback($regexp, ['self', 'mentionAddrCallback'], $body);
1541 * $data['summary'] = BBCode::toPlaintext(Plaintext::shorten(self::removePictures($summary), 1000));
1545 if (empty($item['uid']) || !Feature::isEnabled($item['uid'], 'explicit_mentions')) {
1546 $body = self::prependMentions($body, $item['uri-id'], $item['author-link']);
1549 if ($type == 'Event') {
1550 $data = array_merge($data, self::createEvent($item));
1552 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1553 $body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
1555 $data['content'] = BBCode::convert($body, false, BBCode::ACTIVITYPUB);
1558 // The regular "content" field does contain a minimized HTML. This is done since systems like
1559 // Mastodon has got problems with - for example - embedded pictures.
1560 // The contentMap does contain the unmodified HTML.
1561 $language = self::getLanguage($item);
1562 if (!empty($language)) {
1563 $regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
1564 $richbody = preg_replace_callback($regexp, ['self', 'mentionCallback'], $item['body']);
1565 $richbody = BBCode::removeAttachment($richbody);
1567 $data['contentMap'][$language] = BBCode::convert($richbody, false, BBCode::EXTERNAL);
1570 $data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
1572 if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
1573 $data['diaspora:comment'] = $item['signed_text'];
1576 $data['attachment'] = self::createAttachmentList($item, $type);
1577 $data['tag'] = self::createTagList($item);
1579 if (empty($data['location']) && (!empty($item['coord']) || !empty($item['location']))) {
1580 $data['location'] = self::createLocation($item);
1583 if (!empty($item['app'])) {
1584 $data['generator'] = ['type' => 'Application', 'name' => $item['app']];
1587 $data = array_merge($data, $permission_block);
1593 * Fetches the language from the post, the user or the system.
1595 * @param array $item
1597 * @return string language string
1599 private static function getLanguage(array $item)
1601 // Try to fetch the language from the post itself
1602 if (!empty($item['language'])) {
1603 $languages = array_keys(json_decode($item['language'], true));
1604 if (!empty($languages[0])) {
1605 return $languages[0];
1609 // Otherwise use the user's language
1610 if (!empty($item['uid'])) {
1611 $user = DBA::selectFirst('user', ['language'], ['uid' => $item['uid']]);
1612 if (!empty($user['language'])) {
1613 return $user['language'];
1617 // And finally just use the system language
1618 return DI::config()->get('system', 'language');
1622 * Creates an an "add tag" entry
1624 * @param array $item
1625 * @param array $data activity data
1627 * @return array with activity data for adding tags
1628 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1629 * @throws \ImagickException
1631 private static function createAddTag($item, $data)
1633 $object = XML::parseString($item['object']);
1634 $target = XML::parseString($item["target"]);
1636 $data['diaspora:guid'] = $item['guid'];
1637 $data['actor'] = $item['author-link'];
1638 $data['target'] = (string)$target->id;
1639 $data['summary'] = BBCode::toPlaintext($item['body']);
1640 $data['object'] = ['id' => (string)$object->id, 'type' => 'tag', 'name' => (string)$object->title, 'content' => (string)$object->content];
1646 * Creates an announce object entry
1648 * @param array $item
1649 * @param array $data activity data
1651 * @return array with activity data
1652 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1653 * @throws \ImagickException
1655 private static function createAnnounce($item, $data)
1657 $orig_body = $item['body'];
1658 $announce = self::getAnnounceArray($item);
1659 if (empty($announce)) {
1660 $data['type'] = 'Create';
1661 $data['object'] = self::createNote($item);
1665 if (empty($announce['comment'])) {
1666 // Pure announce, without a quote
1667 $data['type'] = 'Announce';
1668 $data['object'] = $announce['object']['uri'];
1673 $data['type'] = 'Create';
1674 $item['body'] = $announce['comment'] . "\n" . $announce['object']['plink'];
1675 $data['object'] = self::createNote($item);
1677 /// @todo Finally descide how to implement this in AP. This is a possible way:
1678 $data['object']['attachment'][] = self::createNote($announce['object']);
1680 $data['object']['source']['content'] = $orig_body;
1685 * Return announce related data if the item is an annunce
1687 * @param array $item
1691 public static function getAnnounceArray($item)
1693 $reshared = Item::getShareArray($item);
1694 if (empty($reshared['guid'])) {
1698 $reshared_item = Post::selectFirst(Item::DELIVER_FIELDLIST, ['guid' => $reshared['guid']]);
1699 if (!DBA::isResult($reshared_item)) {
1703 if (!in_array($reshared_item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) {
1707 $profile = APContact::getByURL($reshared_item['author-link'], false);
1708 if (empty($profile)) {
1712 return ['object' => $reshared_item, 'actor' => $profile, 'comment' => $reshared['comment']];
1716 * Checks if the provided item array is an announce
1718 * @param array $item
1722 public static function isAnnounce($item)
1724 if (!empty($item['verb']) && ($item['verb'] == Activity::ANNOUNCE)) {
1728 $announce = self::getAnnounceArray($item);
1729 if (empty($announce)) {
1733 return empty($announce['comment']);
1737 * Creates an activity id for a given contact id
1739 * @param integer $cid Contact ID of target
1741 * @return bool|string activity id
1743 public static function activityIDFromContact($cid)
1745 $contact = DBA::selectFirst('contact', ['uid', 'id', 'created'], ['id' => $cid]);
1746 if (!DBA::isResult($contact)) {
1750 $hash = hash('ripemd128', $contact['uid'].'-'.$contact['id'].'-'.$contact['created']);
1751 $uuid = substr($hash, 0, 8). '-' . substr($hash, 8, 4) . '-' . substr($hash, 12, 4) . '-' . substr($hash, 16, 4) . '-' . substr($hash, 20, 12);
1752 return DI::baseUrl() . '/activity/' . $uuid;
1756 * Transmits a contact suggestion to a given inbox
1758 * @param integer $uid User ID
1759 * @param string $inbox Target inbox
1760 * @param integer $suggestion_id Suggestion ID
1762 * @return boolean was the transmission successful?
1763 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1765 public static function sendContactSuggestion($uid, $inbox, $suggestion_id)
1767 $owner = User::getOwnerDataById($uid);
1769 $suggestion = DI::fsuggest()->getById($suggestion_id);
1771 $data = ['@context' => ActivityPub::CONTEXT,
1772 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1773 'type' => 'Announce',
1774 'actor' => $owner['url'],
1775 'object' => $suggestion->url,
1776 'content' => $suggestion->note,
1777 'instrument' => self::getService(),
1778 'to' => [ActivityPub::PUBLIC_COLLECTION],
1781 $signed = LDSignature::sign($data, $owner);
1783 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1784 return HTTPSignature::transmit($signed, $inbox, $uid);
1788 * Transmits a profile relocation to a given inbox
1790 * @param integer $uid User ID
1791 * @param string $inbox Target inbox
1793 * @return boolean was the transmission successful?
1794 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1796 public static function sendProfileRelocation($uid, $inbox)
1798 $owner = User::getOwnerDataById($uid);
1800 $data = ['@context' => ActivityPub::CONTEXT,
1801 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1802 'type' => 'dfrn:relocate',
1803 'actor' => $owner['url'],
1804 'object' => $owner['url'],
1805 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1806 'instrument' => self::getService(),
1807 'to' => [ActivityPub::PUBLIC_COLLECTION],
1810 $signed = LDSignature::sign($data, $owner);
1812 Logger::log('Deliver profile relocation for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1813 return HTTPSignature::transmit($signed, $inbox, $uid);
1817 * Transmits a profile deletion to a given inbox
1819 * @param integer $uid User ID
1820 * @param string $inbox Target inbox
1822 * @return boolean was the transmission successful?
1823 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1825 public static function sendProfileDeletion($uid, $inbox)
1827 $owner = User::getOwnerDataById($uid);
1829 if (empty($owner)) {
1830 Logger::error('No owner data found, the deletion message cannot be processed.', ['user' => $uid]);
1834 if (empty($owner['uprvkey'])) {
1835 Logger::error('No private key for owner found, the deletion message cannot be processed.', ['user' => $uid]);
1839 $data = ['@context' => ActivityPub::CONTEXT,
1840 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1842 'actor' => $owner['url'],
1843 'object' => $owner['url'],
1844 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1845 'instrument' => self::getService(),
1846 'to' => [ActivityPub::PUBLIC_COLLECTION],
1849 $signed = LDSignature::sign($data, $owner);
1851 Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1852 return HTTPSignature::transmit($signed, $inbox, $uid);
1856 * Transmits a profile change to a given inbox
1858 * @param integer $uid User ID
1859 * @param string $inbox Target inbox
1861 * @return boolean was the transmission successful?
1862 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1863 * @throws \ImagickException
1865 public static function sendProfileUpdate($uid, $inbox)
1867 $owner = User::getOwnerDataById($uid);
1868 $profile = APContact::getByURL($owner['url']);
1870 $data = ['@context' => ActivityPub::CONTEXT,
1871 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1873 'actor' => $owner['url'],
1874 'object' => self::getProfile($uid),
1875 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
1876 'instrument' => self::getService(),
1877 'to' => [$profile['followers']],
1880 $signed = LDSignature::sign($data, $owner);
1882 Logger::log('Deliver profile update for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
1883 return HTTPSignature::transmit($signed, $inbox, $uid);
1887 * Transmits a given activity to a target
1889 * @param string $activity Type name
1890 * @param string $target Target profile
1891 * @param integer $uid User ID
1893 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1894 * @throws \ImagickException
1895 * @throws \Exception
1897 public static function sendActivity($activity, $target, $uid, $id = '')
1899 $profile = APContact::getByURL($target);
1900 if (empty($profile['inbox'])) {
1901 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1905 $owner = User::getOwnerDataById($uid);
1908 $id = DI::baseUrl() . '/activity/' . System::createGUID();
1911 $data = ['@context' => ActivityPub::CONTEXT,
1913 'type' => $activity,
1914 'actor' => $owner['url'],
1915 'object' => $profile['url'],
1916 'instrument' => self::getService(),
1917 'to' => [$profile['url']]];
1919 Logger::log('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1921 $signed = LDSignature::sign($data, $owner);
1922 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1926 * Transmits a "follow object" activity to a target
1927 * This is a preparation for sending automated "follow" requests when receiving "Announce" messages
1929 * @param string $object Object URL
1930 * @param string $target Target profile
1931 * @param integer $uid User ID
1933 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1934 * @throws \ImagickException
1935 * @throws \Exception
1937 public static function sendFollowObject($object, $target, $uid = 0)
1939 $profile = APContact::getByURL($target);
1940 if (empty($profile['inbox'])) {
1941 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1946 // Fetch the list of administrators
1947 $admin_mail = explode(',', str_replace(' ', '', DI::config()->get('config', 'admin_email')));
1949 // We need to use some user as a sender. It doesn't care who it will send. We will use an administrator account.
1950 $condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false, 'email' => $admin_mail];
1951 $first_user = DBA::selectFirst('user', ['uid'], $condition);
1952 $uid = $first_user['uid'];
1955 $condition = ['verb' => Activity::FOLLOW, 'uid' => 0, 'parent-uri' => $object,
1956 'author-id' => Contact::getPublicIdByUserId($uid)];
1957 if (Post::exists($condition)) {
1958 Logger::log('Follow for ' . $object . ' for user ' . $uid . ' does already exist.', Logger::DEBUG);
1962 $owner = User::getOwnerDataById($uid);
1964 $data = ['@context' => ActivityPub::CONTEXT,
1965 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1967 'actor' => $owner['url'],
1968 'object' => $object,
1969 'instrument' => self::getService(),
1970 'to' => [$profile['url']]];
1972 Logger::log('Sending follow ' . $object . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
1974 $signed = LDSignature::sign($data, $owner);
1975 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
1979 * Transmit a message that the contact request had been accepted
1981 * @param string $target Target profile
1983 * @param integer $uid User ID
1984 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1985 * @throws \ImagickException
1987 public static function sendContactAccept($target, $id, $uid)
1989 $profile = APContact::getByURL($target);
1990 if (empty($profile['inbox'])) {
1991 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
1995 $owner = User::getOwnerDataById($uid);
1996 $data = ['@context' => ActivityPub::CONTEXT,
1997 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
1999 'actor' => $owner['url'],
2001 'id' => (string)$id,
2003 'actor' => $profile['url'],
2004 'object' => $owner['url']
2006 'instrument' => self::getService(),
2007 'to' => [$profile['url']]];
2009 Logger::debug('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id);
2011 $signed = LDSignature::sign($data, $owner);
2012 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
2016 * Reject a contact request or terminates the contact relation
2018 * @param string $target Target profile
2020 * @param integer $uid User ID
2021 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2022 * @throws \ImagickException
2024 public static function sendContactReject($target, $id, $uid)
2026 $profile = APContact::getByURL($target);
2027 if (empty($profile['inbox'])) {
2028 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
2032 $owner = User::getOwnerDataById($uid);
2033 $data = ['@context' => ActivityPub::CONTEXT,
2034 'id' => DI::baseUrl() . '/activity/' . System::createGUID(),
2036 'actor' => $owner['url'],
2038 'id' => (string)$id,
2040 'actor' => $profile['url'],
2041 'object' => $owner['url']
2043 'instrument' => self::getService(),
2044 'to' => [$profile['url']]];
2046 Logger::debug('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id);
2048 $signed = LDSignature::sign($data, $owner);
2049 HTTPSignature::transmit($signed, $profile['inbox'], $uid);
2053 * Transmits a message that we don't want to follow this contact anymore
2055 * @param string $target Target profile
2056 * @param integer $uid User ID
2057 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2058 * @throws \ImagickException
2059 * @throws \Exception
2060 * @return bool success
2062 public static function sendContactUndo($target, $cid, $uid)
2064 $profile = APContact::getByURL($target);
2065 if (empty($profile['inbox'])) {
2066 Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
2070 $object_id = self::activityIDFromContact($cid);
2071 if (empty($object_id)) {
2075 $id = DI::baseUrl() . '/activity/' . System::createGUID();
2077 $owner = User::getOwnerDataById($uid);
2078 $data = ['@context' => ActivityPub::CONTEXT,
2081 'actor' => $owner['url'],
2082 'object' => ['id' => $object_id, 'type' => 'Follow',
2083 'actor' => $owner['url'],
2084 'object' => $profile['url']],
2085 'instrument' => self::getService(),
2086 'to' => [$profile['url']]];
2088 Logger::log('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, Logger::DEBUG);
2090 $signed = LDSignature::sign($data, $owner);
2091 return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
2094 private static function prependMentions($body, int $uriid, string $authorLink)
2098 foreach (Tag::getByURIId($uriid, [Tag::IMPLICIT_MENTION]) as $tag) {
2099 $profile = Contact::getByURL($tag['url'], false, ['addr', 'contact-type', 'nick']);
2100 if (!empty($profile['addr'])
2101 && $profile['contact-type'] != Contact::TYPE_COMMUNITY
2102 && !strstr($body, $profile['addr'])
2103 && !strstr($body, $tag['url'])
2104 && $tag['url'] !== $authorLink
2106 $mentions[] = '@[url=' . $tag['url'] . ']' . $profile['nick'] . '[/url]';
2110 $mentions[] = $body;
2112 return implode(' ', $mentions);