3 * @copyright Copyright (C) 2010-2022, 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\Text\BBCode;
25 use Friendica\Content\Text\HTML;
26 use Friendica\Content\Text\Markdown;
27 use Friendica\Core\Cache\Enum\Duration;
28 use Friendica\Core\Logger;
29 use Friendica\Core\Protocol;
30 use Friendica\Core\System;
31 use Friendica\Core\Worker;
32 use Friendica\Database\DBA;
34 use Friendica\Model\APContact;
35 use Friendica\Model\Contact;
36 use Friendica\Model\Conversation;
37 use Friendica\Model\Event;
38 use Friendica\Model\GServer;
39 use Friendica\Model\Item;
40 use Friendica\Model\ItemURI;
41 use Friendica\Model\Mail;
42 use Friendica\Model\Tag;
43 use Friendica\Model\User;
44 use Friendica\Model\Post;
45 use Friendica\Protocol\Activity;
46 use Friendica\Protocol\ActivityPub;
47 use Friendica\Protocol\Relay;
48 use Friendica\Util\DateTimeFormat;
49 use Friendica\Util\HTTPSignature;
50 use Friendica\Util\JsonLD;
51 use Friendica\Util\Network;
52 use Friendica\Util\Strings;
53 use Friendica\Worker\Delivery;
56 * ActivityPub Processor Protocol class
60 const CACHEKEY_FETCH_ACTIVITY = 'processor:fetchMissingActivity:';
62 * Extracts the tag character (#, @, !) from mention links
67 protected static function normalizeMentionLinks(string $body): string
69 return preg_replace('%\[url=([^\[\]]*)]([#@!])(.*?)\[/url]%ism', '$2[url=$1]$3[/url]', $body);
73 * Convert the language array into a language JSON
75 * @param array $languages
76 * @return string language JSON
78 private static function processLanguages(array $languages): string
80 $codes = array_keys($languages);
82 foreach ($codes as $code) {
90 return json_encode($lang);
93 * Replaces emojis in the body
97 * @param array $emojis
99 * @return string with replaced emojis
101 private static function replaceEmojis(int $uri_id, string $body, array $emojis): string
105 array_column($emojis, 'name'),
106 array_map(function ($emoji) {
107 return '[emoji=' . $emoji['href'] . ']' . $emoji['name'] . '[/emoji]';
112 // We store the emoji here to be able to avoid storing it in the media
113 foreach ($emojis as $emoji) {
114 Post\Link::getByLink($uri_id, $emoji['href']);
120 * Store attached media files in the post-media table
123 * @param array $attachment
126 private static function storeAttachmentAsMedia(int $uriid, array $attachment)
128 if (empty($attachment['url'])) {
132 $data = ['uri-id' => $uriid];
133 $data['type'] = Post\Media::UNKNOWN;
134 $data['url'] = $attachment['url'];
135 $data['mimetype'] = $attachment['mediaType'] ?? null;
136 $data['height'] = $attachment['height'] ?? null;
137 $data['width'] = $attachment['width'] ?? null;
138 $data['size'] = $attachment['size'] ?? null;
139 $data['preview'] = $attachment['image'] ?? null;
140 $data['description'] = $attachment['name'] ?? null;
142 Post\Media::insert($data);
146 * Stire attachment data
148 * @param array $activity
151 private static function storeAttachments(array $activity, array $item)
153 if (empty($activity['attachments'])) {
157 foreach ($activity['attachments'] as $attach) {
158 self::storeAttachmentAsMedia($item['uri-id'], $attach);
163 * Store attachment data
165 * @param array $activity
168 private static function storeQuestion(array $activity, array $item)
170 if (empty($activity['question'])) {
173 $question = ['multiple' => $activity['question']['multiple']];
175 if (!empty($activity['question']['voters'])) {
176 $question['voters'] = $activity['question']['voters'];
179 if (!empty($activity['question']['end-time'])) {
180 $question['end-time'] = DateTimeFormat::utc($activity['question']['end-time']);
183 Post\Question::update($item['uri-id'], $question);
185 foreach ($activity['question']['options'] as $key => $option) {
186 $option = ['name' => $option['name'], 'replies' => $option['replies']];
187 Post\QuestionOption::update($item['uri-id'], $key, $option);
190 Logger::debug('Storing incoming question', ['type' => $activity['type'], 'uri-id' => $item['uri-id'], 'question' => $activity['question']]);
196 * @param array $activity Activity array
197 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
198 * @throws \ImagickException
200 public static function updateItem(array $activity)
202 $item = Post::selectFirst(['uri', 'uri-id', 'thr-parent', 'gravity', 'post-type'], ['uri' => $activity['id']]);
203 if (!DBA::isResult($item)) {
204 Logger::warning('No existing item, item will be created', ['uri' => $activity['id']]);
205 $item = self::createItem($activity);
210 self::postItem($activity, $item);
214 $item['changed'] = DateTimeFormat::utcNow();
215 $item['edited'] = DateTimeFormat::utc($activity['updated']);
217 $item = self::processContent($activity, $item);
219 self::storeAttachments($activity, $item);
220 self::storeQuestion($activity, $item);
226 Post\History::add($item['uri-id'], $item);
227 Item::update($item, ['uri' => $activity['id']]);
229 Queue::remove($activity);
231 if ($activity['object_type'] == 'as:Event') {
232 $posts = Post::select(['event-id', 'uid'], ["`uri` = ? AND `event-id` > ?", $activity['id'], 0]);
233 while ($post = DBA::fetch($posts)) {
234 self::updateEvent($post['event-id'], $activity);
240 * Update an existing event
242 * @param int $event_id
243 * @param array $activity
245 private static function updateEvent(int $event_id, array $activity)
247 $event = DBA::selectFirst('event', [], ['id' => $event_id]);
249 $event['edited'] = DateTimeFormat::utc($activity['updated']);
250 $event['summary'] = HTML::toBBCode($activity['name']);
251 $event['desc'] = HTML::toBBCode($activity['content']);
252 if (!empty($activity['start-time'])) {
253 $event['start'] = DateTimeFormat::utc($activity['start-time']);
255 if (!empty($activity['end-time'])) {
256 $event['finish'] = DateTimeFormat::utc($activity['end-time']);
258 $event['nofinish'] = empty($event['finish']);
259 $event['location'] = $activity['location'];
261 Logger::info('Updating event', ['uri' => $activity['id'], 'id' => $event_id]);
262 Event::store($event);
266 * Prepares data for a message
268 * @param array $activity Activity array
269 * @return array Internal item
270 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
271 * @throws \ImagickException
273 public static function createItem(array $activity): array
276 $item['verb'] = Activity::POST;
277 $item['thr-parent'] = $activity['reply-to-id'];
279 if ($activity['reply-to-id'] == $activity['id']) {
280 $item['gravity'] = GRAVITY_PARENT;
281 $item['object-type'] = Activity\ObjectType::NOTE;
283 $item['gravity'] = GRAVITY_COMMENT;
284 $item['object-type'] = Activity\ObjectType::COMMENT;
287 if (!empty($activity['context'])) {
288 $item['conversation'] = $activity['context'];
289 } elseif (!empty($activity['conversation'])) {
290 $item['conversation'] = $activity['conversation'];
293 if (!empty($item['conversation'])) {
294 $conversation = Post::selectFirstThread(['uri'], ['conversation' => $item['conversation']]);
295 if (!empty($conversation)) {
296 Logger::debug('Got conversation', ['conversation' => $item['conversation'], 'parent' => $conversation]);
297 $item['parent-uri'] = $conversation['uri'];
303 if (empty($activity['directmessage']) && ($activity['id'] != $activity['reply-to-id']) && !Post::exists(['uri' => $activity['reply-to-id']])) {
304 $recursion_depth = $activity['recursion-depth'] ?? 0;
305 Logger::notice('Parent not found. Try to refetch it.', ['parent' => $activity['reply-to-id'], 'recursion-depth' => $recursion_depth]);
306 if ($recursion_depth < 10) {
307 $result = self::fetchMissingActivity($activity['reply-to-id'], $activity, '', Receiver::COMPLETION_AUTO);
308 if (empty($result) && self::isActivityGone($activity['reply-to-id'])) {
309 // Recursively delete this and all depending entries
310 Queue::deleteById($activity['entry-id']);
313 $fetch_by_worker = empty($result);
315 Logger::notice('Recursion level is too high.', ['parent' => $activity['reply-to-id'], 'recursion-depth' => $recursion_depth]);
316 $fetch_by_worker = true;
319 if ($fetch_by_worker && Queue::hasWorker($activity)) {
320 Logger::notice('There is already a worker task to fetch the post.', ['id' => $activity['id'], 'parent' => $activity['reply-to-id']]);
321 $fetch_by_worker = false;
322 if (!empty($conversation)) {
327 if ($fetch_by_worker) {
328 Logger::notice('Fetching is done by worker.', ['parent' => $activity['reply-to-id'], 'recursion-depth' => $recursion_depth]);
329 $activity['recursion-depth'] = 0;
330 $wid = Worker::add(PRIORITY_HIGH, 'FetchMissingActivity', $activity['reply-to-id'], $activity, '', Receiver::COMPLETION_AUTO);
331 Queue::setWorkerId($activity, $wid);
332 if (!empty($conversation)) {
335 } elseif (!empty($result)) {
336 if (($item['thr-parent'] != $result) && Post::exists(['uri' => $result])) {
337 $item['thr-parent'] = $result;
342 $item['diaspora_signed_text'] = $activity['diaspora:comment'] ?? '';
344 if (empty($conversation) && empty($activity['directmessage']) && ($item['gravity'] != GRAVITY_PARENT) && !Post::exists(['uri' => $item['thr-parent']])) {
345 Logger::info('Parent not found, message will be discarded.', ['thr-parent' => $item['thr-parent']]);
349 $item['network'] = Protocol::ACTIVITYPUB;
350 $item['author-link'] = $activity['author'];
351 $item['author-id'] = Contact::getIdForURL($activity['author']);
352 $item['owner-link'] = $activity['actor'];
353 $item['owner-id'] = Contact::getIdForURL($activity['actor']);
355 if (in_array(0, $activity['receiver']) && !empty($activity['unlisted'])) {
356 $item['private'] = Item::UNLISTED;
357 } elseif (in_array(0, $activity['receiver'])) {
358 $item['private'] = Item::PUBLIC;
360 $item['private'] = Item::PRIVATE;
363 if (!empty($activity['raw'])) {
364 $item['source'] = $activity['raw'];
365 $item['protocol'] = Conversation::PARCEL_ACTIVITYPUB;
367 if (isset($activity['push'])) {
368 $item['direction'] = $activity['push'] ? Conversation::PUSH : Conversation::PULL;
372 if (!empty($activity['from-relay'])) {
373 $item['direction'] = Conversation::RELAY;
376 if ($activity['object_type'] == 'as:Article') {
377 $item['post-type'] = Item::PT_ARTICLE;
378 } elseif ($activity['object_type'] == 'as:Audio') {
379 $item['post-type'] = Item::PT_AUDIO;
380 } elseif ($activity['object_type'] == 'as:Document') {
381 $item['post-type'] = Item::PT_DOCUMENT;
382 } elseif ($activity['object_type'] == 'as:Event') {
383 $item['post-type'] = Item::PT_EVENT;
384 } elseif ($activity['object_type'] == 'as:Image') {
385 $item['post-type'] = Item::PT_IMAGE;
386 } elseif ($activity['object_type'] == 'as:Page') {
387 $item['post-type'] = Item::PT_PAGE;
388 } elseif ($activity['object_type'] == 'as:Question') {
389 $item['post-type'] = Item::PT_POLL;
390 } elseif ($activity['object_type'] == 'as:Video') {
391 $item['post-type'] = Item::PT_VIDEO;
393 $item['post-type'] = Item::PT_NOTE;
396 $item['isForum'] = false;
398 if (!empty($activity['thread-completion'])) {
399 if ($activity['thread-completion'] != $item['owner-id']) {
400 $actor = Contact::getById($activity['thread-completion'], ['url']);
401 $item['causer-link'] = $actor['url'];
402 $item['causer-id'] = $activity['thread-completion'];
403 Logger::info('Use inherited actor as causer.', ['id' => $item['owner-id'], 'activity' => $activity['thread-completion'], 'owner' => $item['owner-link'], 'actor' => $actor['url']]);
405 // Store the original actor in the "causer" fields to enable the check for ignored or blocked contacts
406 $item['causer-link'] = $item['owner-link'];
407 $item['causer-id'] = $item['owner-id'];
408 Logger::info('Use actor as causer.', ['id' => $item['owner-id'], 'actor' => $item['owner-link']]);
411 $item['owner-link'] = $item['author-link'];
412 $item['owner-id'] = $item['author-id'];
414 $actor = APContact::getByURL($item['owner-link'], false);
415 $item['isForum'] = ($actor['type'] == 'Group');
418 $item['uri'] = $activity['id'];
420 if (empty($activity['published']) || empty($activity['updated'])) {
421 DI::logger()->notice('published or updated keys are empty for activity', ['activity' => $activity, 'callstack' => System::callstack(10)]);
424 $item['created'] = DateTimeFormat::utc($activity['published'] ?? 'now');
425 $item['edited'] = DateTimeFormat::utc($activity['updated'] ?? 'now');
426 $guid = $activity['sc:identifier'] ?: self::getGUIDByURL($item['uri']);
427 $item['guid'] = $activity['diaspora:guid'] ?: $guid;
429 $item['uri-id'] = ItemURI::insert(['uri' => $item['uri'], 'guid' => $item['guid']]);
430 if (empty($item['uri-id'])) {
431 Logger::warning('Unable to get a uri-id for an item uri', ['uri' => $item['uri'], 'guid' => $item['guid']]);
435 $item = self::processContent($activity, $item);
437 Logger::info('Message was not processed');
441 $item['plink'] = $activity['alternate-url'] ?? $item['uri'];
443 self::storeAttachments($activity, $item);
444 self::storeQuestion($activity, $item);
446 // We received the post via AP, so we set the protocol of the server to AP
447 $contact = Contact::getById($item['author-id'], ['gsid']);
448 if (!empty($contact['gsid'])) {
449 GServer::setProtocol($contact['gsid'], Post\DeliveryData::ACTIVITYPUB);
452 if ($item['author-id'] != $item['owner-id']) {
453 $contact = Contact::getById($item['owner-id'], ['gsid']);
454 if (!empty($contact['gsid'])) {
455 GServer::setProtocol($contact['gsid'], Post\DeliveryData::ACTIVITYPUB);
463 * Check if a given activity is no longer available
469 public static function isActivityGone(string $url): bool
471 $curlResult = HTTPSignature::fetchRaw($url, 0);
473 if (Network::isUrlBlocked($url)) {
477 // @todo To ensure that the remote system is working correctly, we can check if the "Content-Type" contains JSON
478 if (in_array($curlResult->getReturnCode(), [404])) {
482 $object = json_decode($curlResult->getBody(), true);
483 if (!empty($object)) {
484 $activity = JsonLD::compact($object);
485 if (JsonLD::fetchElement($activity, '@type') == 'as:Tombstone') {
495 * @param array $activity
496 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
497 * @throws \ImagickException
499 public static function deleteItem(array $activity)
501 $owner = Contact::getIdForURL($activity['actor']);
503 Logger::info('Deleting item', ['object' => $activity['object_id'], 'owner' => $owner]);
504 Item::markForDeletion(['uri' => $activity['object_id'], 'owner-id' => $owner]);
505 Queue::remove($activity);
509 * Prepare the item array for an activity
511 * @param array $activity Activity array
512 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
513 * @throws \ImagickException
515 public static function addTag(array $activity)
517 if (empty($activity['object_content']) || empty($activity['object_id'])) {
521 foreach ($activity['receiver'] as $receiver) {
522 $item = Post::selectFirst(['id', 'uri-id', 'origin', 'author-link'], ['uri' => $activity['target_id'], 'uid' => $receiver]);
523 if (!DBA::isResult($item)) {
524 // We don't fetch missing content for this purpose
528 if (($item['author-link'] != $activity['actor']) && !$item['origin']) {
529 Logger::info('Not origin, not from the author, skipping update', ['id' => $item['id'], 'author' => $item['author-link'], 'actor' => $activity['actor']]);
533 Tag::store($item['uri-id'], Tag::HASHTAG, $activity['object_content'], $activity['object_id']);
534 Logger::info('Tagged item', ['id' => $item['id'], 'tag' => $activity['object_content'], 'uri' => $activity['target_id'], 'actor' => $activity['actor']]);
539 * Prepare the item array for an activity
541 * @param array $activity Activity array
542 * @param string $verb Activity verb
543 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
544 * @throws \ImagickException
546 public static function createActivity(array $activity, string $verb)
548 $activity['reply-to-id'] = $activity['object_id'];
549 $item = self::createItem($activity);
554 $item['verb'] = $verb;
555 $item['thr-parent'] = $activity['object_id'];
556 $item['gravity'] = GRAVITY_ACTIVITY;
557 unset($item['post-type']);
558 $item['object-type'] = Activity\ObjectType::NOTE;
560 if (!empty($activity['content'])) {
561 $item['body'] = HTML::toBBCode($activity['content']);
564 $item['diaspora_signed_text'] = $activity['diaspora:like'] ?? '';
566 self::postItem($activity, $item);
570 * Fetch the Uri-Id of a post for the "featured" collection
572 * @param array $activity
575 private static function getUriIdForFeaturedCollection(array $activity)
577 $actor = APContact::getByURL($activity['actor']);
582 // Refetch the account when the "featured" collection is missing.
583 // This can be removed in a future version (end of 2022 should be good).
584 if (empty($actor['featured'])) {
585 $actor = APContact::getByURL($activity['actor'], true);
591 $parent = Post::selectFirst(['uri-id'], ['uri' => $activity['object_id']]);
592 if (empty($parent['uri-id'])) {
593 if (self::fetchMissingActivity($activity['object_id'], $activity, '', Receiver::COMPLETION_AUTO)) {
594 $parent = Post::selectFirst(['uri-id'], ['uri' => $activity['object_id']]);
598 if (!empty($parent['uri-id'])) {
599 return $parent['uri-id'];
606 * Add a post to the "Featured" collection
608 * @param array $activity
610 public static function addToFeaturedCollection(array $activity)
612 $uriid = self::getUriIdForFeaturedCollection($activity);
617 Logger::debug('Add post to featured collection', ['uri-id' => $uriid]);
619 Post\Collection::add($uriid, Post\Collection::FEATURED);
620 Queue::remove($activity);
624 * Remove a post to the "Featured" collection
626 * @param array $activity
628 public static function removeFromFeaturedCollection(array $activity)
630 $uriid = self::getUriIdForFeaturedCollection($activity);
635 Logger::debug('Remove post from featured collection', ['uri-id' => $uriid]);
637 Post\Collection::remove($uriid, Post\Collection::FEATURED);
638 Queue::remove($activity);
644 * @param array $activity Activity array
647 * @return int event id
650 public static function createEvent(array $activity, array $item): int
652 $event['summary'] = HTML::toBBCode($activity['name'] ?: $activity['summary']);
653 $event['desc'] = HTML::toBBCode($activity['content']);
654 if (!empty($activity['start-time'])) {
655 $event['start'] = DateTimeFormat::utc($activity['start-time']);
657 if (!empty($activity['end-time'])) {
658 $event['finish'] = DateTimeFormat::utc($activity['end-time']);
660 $event['nofinish'] = empty($event['finish']);
661 $event['location'] = $activity['location'];
662 $event['cid'] = $item['contact-id'];
663 $event['uid'] = $item['uid'];
664 $event['uri'] = $item['uri'];
665 $event['edited'] = $item['edited'];
666 $event['private'] = $item['private'];
667 $event['guid'] = $item['guid'];
668 $event['plink'] = $item['plink'];
669 $event['network'] = $item['network'];
670 $event['protocol'] = $item['protocol'];
671 $event['direction'] = $item['direction'];
672 $event['source'] = $item['source'];
674 $ev = DBA::selectFirst('event', ['id'], ['uri' => $item['uri'], 'uid' => $item['uid']]);
675 if (DBA::isResult($ev)) {
676 $event['id'] = $ev['id'];
679 $event_id = Event::store($event);
681 Logger::info('Event was stored', ['id' => $event_id]);
687 * Process the content
689 * @param array $activity Activity array
691 * @return array|bool Returns the item array or false if there was an unexpected occurrence
694 private static function processContent(array $activity, array $item)
696 if (!empty($activity['mediatype']) && ($activity['mediatype'] == 'text/markdown')) {
697 $item['title'] = strip_tags($activity['name']);
698 $content = Markdown::toBBCode($activity['content']);
699 } elseif (!empty($activity['mediatype']) && ($activity['mediatype'] == 'text/bbcode')) {
700 $item['title'] = $activity['name'];
701 $content = $activity['content'];
703 // By default assume "text/html"
704 $item['title'] = HTML::toBBCode($activity['name'] ?? '');
705 $content = HTML::toBBCode($activity['content'] ?? '');
708 $item['title'] = trim(BBCode::toPlaintext($item['title']));
710 if (!empty($activity['languages'])) {
711 $item['language'] = self::processLanguages($activity['languages']);
714 if (!empty($activity['emojis'])) {
715 $content = self::replaceEmojis($item['uri-id'], $content, $activity['emojis']);
718 $content = self::addMentionLinks($content, $activity['tags']);
720 if (!empty($activity['source'])) {
721 $item['body'] = $activity['source'];
722 $item['raw-body'] = $content;
723 $item['body'] = Item::improveSharedDataInBody($item);
725 $parent_uri = $item['parent-uri'] ?? $item['thr-parent'];
726 if (empty($activity['directmessage']) && ($parent_uri != $item['uri']) && ($item['gravity'] == GRAVITY_COMMENT)) {
727 $parent = Post::selectFirst(['id', 'uri-id', 'private', 'author-link', 'alias'], ['uri' => $parent_uri]);
728 if (!DBA::isResult($parent)) {
729 Logger::warning('Unknown parent item.', ['uri' => $parent_uri]);
732 if (($item['private'] == Item::PRIVATE) && ($parent['private'] != Item::PRIVATE)) {
733 Logger::warning('Item is private but the parent is not. Dropping.', ['item-uri' => $item['uri'], 'thr-parent' => $item['thr-parent']]);
737 $content = self::removeImplicitMentionsFromBody($content, $parent);
739 $item['content-warning'] = HTML::toBBCode($activity['summary'] ?? '');
740 $item['raw-body'] = $item['body'] = $content;
743 self::storeFromBody($item);
744 self::storeTags($item['uri-id'], $activity['tags']);
746 self::storeReceivers($item['uri-id'], $activity['receiver_urls'] ?? []);
748 $item['location'] = $activity['location'];
750 if (!empty($activity['latitude']) && !empty($activity['longitude'])) {
751 $item['coord'] = $activity['latitude'] . ' ' . $activity['longitude'];
754 $item['app'] = $activity['generator'];
760 * Store hashtags and mentions
764 private static function storeFromBody(array $item)
766 // Make sure to delete all existing tags (can happen when called via the update functionality)
767 DBA::delete('post-tag', ['uri-id' => $item['uri-id']]);
769 Tag::storeFromBody($item['uri-id'], $item['body'], '@!');
773 * Generate a GUID out of an URL of an ActivityPub post.
775 * @param string $url message URL
776 * @return string with GUID
778 private static function getGUIDByURL(string $url): string
780 $parsed = parse_url($url);
782 $host_hash = hash('crc32', $parsed['host']);
784 unset($parsed["scheme"]);
785 unset($parsed["host"]);
787 $path = implode("/", $parsed);
789 return $host_hash . '-'. hash('fnv164', $path) . '-'. hash('joaat', $path);
793 * Checks if an incoming message is wanted
795 * @param array $activity
797 * @return boolean Is the message wanted?
799 private static function isSolicitedMessage(array $activity, array $item): bool
801 // The checks are split to improve the support when searching why a message was accepted.
802 if (count($activity['receiver']) != 1) {
803 // The message has more than one receiver, so it is wanted.
804 Logger::debug('Message has got several receivers - accepted', ['uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri']]);
808 if ($item['private'] == Item::PRIVATE) {
809 // We only look at public posts here. Private posts are expected to be intentionally posted to the single receiver.
810 Logger::debug('Message is private - accepted', ['uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri']]);
814 if (!empty($activity['from-relay'])) {
815 // We check relay posts at another place. When it arrived here, the message is already checked.
816 Logger::debug('Message is a relay post that is already checked - accepted', ['uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri']]);
820 if (in_array($activity['completion-mode'] ?? Receiver::COMPLETION_NONE, [Receiver::COMPLETION_MANUAL, Receiver::COMPLETION_ANNOUCE])) {
821 // Manual completions and completions caused by reshares are allowed without any further checks.
822 Logger::debug('Message is in completion mode - accepted', ['mode' => $activity['completion-mode'], 'uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri']]);
826 if ($item['gravity'] != GRAVITY_PARENT) {
827 // We cannot reliably check at this point if a comment or activity belongs to an accepted post or needs to be fetched
828 // This can possibly be improved in the future.
829 Logger::debug('Message is no parent - accepted', ['uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri']]);
833 $tags = array_column(Tag::getByURIId($item['uri-id'], [Tag::HASHTAG]), 'name');
834 if (Relay::isSolicitedPost($tags, $item['body'], $item['author-id'], $item['uri'], Protocol::ACTIVITYPUB)) {
835 Logger::debug('Post is accepted because of the relay settings', ['uri-id' => $item['uri-id'], 'guid' => $item['guid'], 'url' => $item['uri']]);
843 * Creates an item post
845 * @param array $activity Activity data
846 * @param array $item item array
847 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
848 * @throws \ImagickException
850 public static function postItem(array $activity, array $item)
858 ksort($activity['receiver']);
860 if (!self::isSolicitedMessage($activity, $item)) {
861 DBA::delete('item-uri', ['id' => $item['uri-id']]);
865 foreach ($activity['receiver'] as $receiver) {
866 if ($receiver == -1) {
870 $item['uid'] = $receiver;
872 $type = $activity['reception_type'][$receiver] ?? Receiver::TARGET_UNKNOWN;
874 case Receiver::TARGET_TO:
875 $item['post-reason'] = Item::PR_TO;
877 case Receiver::TARGET_CC:
878 $item['post-reason'] = Item::PR_CC;
880 case Receiver::TARGET_BTO:
881 $item['post-reason'] = Item::PR_BTO;
883 case Receiver::TARGET_BCC:
884 $item['post-reason'] = Item::PR_BCC;
886 case Receiver::TARGET_FOLLOWER:
887 $item['post-reason'] = Item::PR_FOLLOWER;
889 case Receiver::TARGET_ANSWER:
890 $item['post-reason'] = Item::PR_COMMENT;
892 case Receiver::TARGET_GLOBAL:
893 $item['post-reason'] = Item::PR_GLOBAL;
896 $item['post-reason'] = Item::PR_NONE;
899 if (!empty($activity['from-relay'])) {
900 $item['post-reason'] = Item::PR_RELAY;
901 } elseif (!empty($activity['thread-completion'])) {
902 $item['post-reason'] = Item::PR_FETCHED;
905 if ($item['isForum'] ?? false) {
906 $item['contact-id'] = Contact::getIdForURL($activity['actor'], $receiver);
908 $item['contact-id'] = Contact::getIdForURL($activity['author'], $receiver);
911 if (($receiver != 0) && empty($item['contact-id'])) {
912 $item['contact-id'] = Contact::getIdForURL($activity['author']);
915 if (!empty($activity['directmessage'])) {
916 self::postMail($activity, $item);
920 if (!($item['isForum'] ?? false) && ($receiver != 0) && ($item['gravity'] == GRAVITY_PARENT) && !Contact::isSharingByURL($activity['author'], $receiver)) {
921 if ($item['post-reason'] == Item::PR_BCC) {
922 Logger::info('Top level post via BCC from a non sharer, ignoring', ['uid' => $receiver, 'contact' => $item['contact-id']]);
927 !empty($activity['thread-children-type'])
928 && in_array($activity['thread-children-type'], Receiver::ACTIVITY_TYPES)
929 && DI::pConfig()->get($receiver, 'system', 'accept_only_sharer') != Item::COMPLETION_LIKE
931 Logger::info('Top level post from thread completion from a non sharer had been initiated via an activity, ignoring',
932 ['type' => $activity['thread-children-type'], 'user' => $item['uid'], 'causer' => $item['causer-link'], 'author' => $activity['author'], 'url' => $item['uri']]);
939 if ($receiver != 0) {
940 $user = User::getById($receiver, ['account-type']);
941 if (!empty($user['account-type'])) {
942 $is_forum = ($user['account-type'] == User::ACCOUNT_TYPE_COMMUNITY);
946 if (!$is_forum && DI::pConfig()->get($receiver, 'system', 'accept_only_sharer') == Item::COMPLETION_NONE && ($receiver != 0) && ($item['gravity'] == GRAVITY_PARENT)) {
947 $skip = !Contact::isSharingByURL($activity['author'], $receiver);
949 if ($skip && (($activity['type'] == 'as:Announce') || ($item['isForum'] ?? false))) {
950 $skip = !Contact::isSharingByURL($activity['actor'], $receiver);
954 Logger::info('Skipping post', ['uid' => $receiver, 'url' => $item['uri']]);
958 Logger::info('Accepting post', ['uid' => $receiver, 'url' => $item['uri']]);
961 if (($item['gravity'] != GRAVITY_ACTIVITY) && ($activity['object_type'] == 'as:Event')) {
962 $event_id = self::createEvent($activity, $item);
964 $item = Event::getItemArrayForImportedId($event_id, $item);
967 $item_id = Item::insert($item);
969 Logger::info('Item insertion successful', ['user' => $item['uid'], 'item_id' => $item_id]);
972 Logger::notice('Item insertion aborted', ['uri' => $item['uri'], 'uid' => $item['uid']]);
973 if (Item::isTooOld($item) || !Item::isValid($item)) {
974 Queue::remove($activity);
978 if ($item['uid'] == 0) {
984 Queue::remove($activity);
986 if (Queue::hasChildren($item['uri'])) {
987 Worker::add(PRIORITY_HIGH, 'ProcessReplyByUri', $item['uri']);
991 // Store send a follow request for every reshare - but only when the item had been stored
992 if ($stored && ($item['private'] != Item::PRIVATE) && ($item['gravity'] == GRAVITY_PARENT) && !empty($item['author-link']) && ($item['author-link'] != $item['owner-link'])) {
993 $author = APContact::getByURL($item['owner-link'], false);
994 // We send automatic follow requests for reshared messages. (We don't need though for forum posts)
995 if ($author['type'] != 'Group') {
996 Logger::info('Send follow request', ['uri' => $item['uri'], 'stored' => $stored, 'to' => $item['author-link']]);
997 ActivityPub\Transmitter::sendFollowObject($item['uri'], $item['author-link']);
1003 * Store tags and mentions into the tag table
1005 * @param integer $uriid
1006 * @param array $tags
1008 private static function storeTags(int $uriid, array $tags = null)
1010 foreach ($tags as $tag) {
1011 if (empty($tag['name']) || empty($tag['type']) || !in_array($tag['type'], ['Mention', 'Hashtag'])) {
1015 $hash = substr($tag['name'], 0, 1);
1017 if ($tag['type'] == 'Mention') {
1018 if (in_array($hash, [Tag::TAG_CHARACTER[Tag::MENTION],
1019 Tag::TAG_CHARACTER[Tag::EXCLUSIVE_MENTION],
1020 Tag::TAG_CHARACTER[Tag::IMPLICIT_MENTION]])) {
1021 $tag['name'] = substr($tag['name'], 1);
1023 $type = Tag::IMPLICIT_MENTION;
1025 if (!empty($tag['href'])) {
1026 $apcontact = APContact::getByURL($tag['href']);
1027 if (!empty($apcontact['name']) || !empty($apcontact['nick'])) {
1028 $tag['name'] = $apcontact['name'] ?: $apcontact['nick'];
1031 } elseif ($tag['type'] == 'Hashtag') {
1032 if ($hash == Tag::TAG_CHARACTER[Tag::HASHTAG]) {
1033 $tag['name'] = substr($tag['name'], 1);
1035 $type = Tag::HASHTAG;
1038 if (empty($tag['name'])) {
1042 Tag::store($uriid, $type, $tag['name'], $tag['href']);
1046 public static function storeReceivers(int $uriid, array $receivers)
1048 foreach (['as:to' => Tag::TO, 'as:cc' => Tag::CC, 'as:bto' => Tag::BTO, 'as:bcc' => Tag::BCC] as $element => $type) {
1049 if (!empty($receivers[$element])) {
1050 foreach ($receivers[$element] as $receiver) {
1051 if ($receiver == ActivityPub::PUBLIC_COLLECTION) {
1052 $name = Receiver::PUBLIC_COLLECTION;
1054 $name = trim(parse_url($receiver, PHP_URL_PATH), '/');
1057 $target = Tag::getTargetType($receiver);
1058 Logger::debug('Got target type', ['type' => $target, 'url' => $receiver]);
1059 Tag::store($uriid, $type, $name, $receiver, $target);
1066 * Creates an mail post
1068 * @param array $activity Activity data
1069 * @param array $item item array
1070 * @return int|bool New mail table row id or false on error
1071 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1073 private static function postMail(array $activity, array $item)
1075 if (($item['gravity'] != GRAVITY_PARENT) && !DBA::exists('mail', ['uri' => $item['thr-parent'], 'uid' => $item['uid']])) {
1076 Logger::info('Parent not found, mail will be discarded.', ['uid' => $item['uid'], 'uri' => $item['thr-parent']]);
1080 Logger::info('Direct Message', $item);
1083 $msg['uid'] = $item['uid'];
1085 $msg['contact-id'] = $item['contact-id'];
1087 $contact = Contact::getById($item['contact-id'], ['name', 'url', 'photo']);
1088 $msg['from-name'] = $contact['name'];
1089 $msg['from-url'] = $contact['url'];
1090 $msg['from-photo'] = $contact['photo'];
1092 $msg['uri'] = $item['uri'];
1093 $msg['created'] = $item['created'];
1095 $parent = DBA::selectFirst('mail', ['parent-uri', 'title'], ['uri' => $item['thr-parent']]);
1096 if (DBA::isResult($parent)) {
1097 $msg['parent-uri'] = $parent['parent-uri'];
1098 $msg['title'] = $parent['title'];
1100 $msg['parent-uri'] = $item['thr-parent'];
1102 if (!empty($item['title'])) {
1103 $msg['title'] = $item['title'];
1104 } elseif (!empty($item['content-warning'])) {
1105 $msg['title'] = $item['content-warning'];
1107 // Trying to generate a title out of the body
1108 $title = $item['body'];
1110 while (preg_match('#^(@\[url=([^\]]+)].*?\[\/url]\s)(.*)#is', $title, $matches)) {
1111 $title = $matches[3];
1114 $title = trim(BBCode::toPlaintext($title));
1116 if (strlen($title) > 20) {
1117 $title = substr($title, 0, 20) . '...';
1120 $msg['title'] = $title;
1123 $msg['body'] = $item['body'];
1125 return Mail::insert($msg);
1129 * Fetch featured posts from a contact with the given url
1131 * @param string $url
1134 public static function fetchFeaturedPosts(string $url)
1136 Logger::info('Fetch featured posts', ['contact' => $url]);
1138 $apcontact = APContact::getByURL($url);
1139 if (empty($apcontact['featured'])) {
1140 Logger::info('Contact does not have a featured collection', ['contact' => $url]);
1144 $pcid = Contact::getIdForURL($url, 0, false);
1146 Logger::info('Contact not found', ['contact' => $url]);
1150 $posts = Post\Collection::selectToArrayForContact($pcid, Post\Collection::FEATURED);
1151 if (!empty($posts)) {
1152 $old_featured = array_column($posts, 'uri-id');
1157 $featured = ActivityPub::fetchItems($apcontact['featured']);
1158 if (empty($featured)) {
1159 Logger::info('Contact does not have featured posts', ['contact' => $url]);
1161 foreach ($old_featured as $uri_id) {
1162 Post\Collection::remove($uri_id, Post\Collection::FEATURED);
1163 Logger::debug('Removed no longer featured post', ['uri-id' => $uri_id, 'contact' => $url]);
1171 foreach ($featured as $post) {
1172 if (empty($post['id'])) {
1175 $id = Item::fetchByLink($post['id']);
1177 $item = Post::selectFirst(['uri-id', 'featured'], ['id' => $id]);
1178 if (!empty($item['uri-id'])) {
1179 if (!$item['featured']) {
1180 Post\Collection::add($item['uri-id'], Post\Collection::FEATURED);
1181 Logger::debug('Added featured post', ['uri-id' => $item['uri-id'], 'contact' => $url]);
1184 Logger::debug('Post already had been featured', ['uri-id' => $item['uri-id'], 'contact' => $url]);
1188 $index = array_search($item['uri-id'], $old_featured);
1189 if (!($index === false)) {
1190 unset($old_featured[$index]);
1196 foreach ($old_featured as $uri_id) {
1197 Post\Collection::remove($uri_id, Post\Collection::FEATURED);
1198 Logger::debug('Removed no longer featured post', ['uri-id' => $uri_id, 'contact' => $url]);
1201 Logger::info('Fetched featured posts', ['new' => $new, 'old' => $old, 'contact' => $url]);
1204 public static function fetchCachedActivity(string $url, int $uid): array
1206 $cachekey = self::CACHEKEY_FETCH_ACTIVITY . $uid . ':' . $url;
1207 $object = DI::cache()->get($cachekey);
1209 if (!is_null($object)) {
1210 if (!empty($object)) {
1211 Logger::debug('Fetch from cache', ['url' => $url, 'uid' => $uid]);
1213 Logger::debug('Fetch from negative cache', ['url' => $url, 'uid' => $uid]);
1218 $object = ActivityPub::fetchContent($url, $uid);
1219 if (empty($object)) {
1220 Logger::notice('Activity was not fetchable, aborting.', ['url' => $url, 'uid' => $uid]);
1221 // We perform negative caching.
1222 DI::cache()->set($cachekey, [], Duration::FIVE_MINUTES);
1226 if (empty($object['id'])) {
1227 Logger::notice('Activity has got not id, aborting. ', ['url' => $url, 'object' => $object]);
1230 DI::cache()->set($cachekey, $object, Duration::FIVE_MINUTES);
1232 Logger::debug('Activity was fetched successfully', ['url' => $url, 'uid' => $uid]);
1238 * Fetches missing posts
1240 * @param string $url message URL
1241 * @param array $child activity array with the child of this message
1242 * @param string $relay_actor Relay actor
1243 * @param int $completion Completion mode, see Receiver::COMPLETION_*
1244 * @return string fetched message URL
1245 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1246 * @throws \ImagickException
1248 public static function fetchMissingActivity(string $url, array $child = [], string $relay_actor = '', int $completion = Receiver::COMPLETION_MANUAL): string
1250 if (!empty($child['receiver'])) {
1251 $uid = ActivityPub\Receiver::getFirstUserFromReceivers($child['receiver']);
1256 $object = self::fetchCachedActivity($url, $uid);
1257 if (empty($object)) {
1263 if (!empty($object['attributedTo'])) {
1264 $attributed_to = $object['attributedTo'];
1265 if (is_array($attributed_to)) {
1266 $compacted = JsonLD::compact($object);
1267 $attributed_to = JsonLD::fetchElement($compacted, 'as:attributedTo', '@id');
1269 $signer[] = $attributed_to;
1272 if (!empty($object['actor'])) {
1273 $object_actor = $object['actor'];
1274 } elseif (!empty($attributed_to)) {
1275 $object_actor = $attributed_to;
1281 $signer[] = $object_actor;
1283 if (!empty($child['author'])) {
1284 $actor = $child['author'];
1287 $actor = $object_actor;
1290 if (!empty($object['published'])) {
1291 $published = $object['published'];
1292 } elseif (!empty($child['published'])) {
1293 $published = $child['published'];
1295 $published = DateTimeFormat::utcNow();
1299 $activity['@context'] = $object['@context'] ?? ActivityPub::CONTEXT;
1300 unset($object['@context']);
1301 $activity['id'] = $object['id'];
1302 $activity['to'] = $object['to'] ?? [];
1303 $activity['cc'] = $object['cc'] ?? [];
1304 $activity['actor'] = $actor;
1305 $activity['object'] = $object;
1306 $activity['published'] = $published;
1307 $activity['type'] = 'Create';
1309 $ldactivity = JsonLD::compact($activity);
1311 $ldactivity['recursion-depth'] = !empty($child['recursion-depth']) ? $child['recursion-depth'] + 1 : 1;
1313 if (!empty($relay_actor)) {
1314 $ldactivity['thread-completion'] = $ldactivity['from-relay'] = Contact::getIdForURL($relay_actor);
1315 $ldactivity['completion-mode'] = Receiver::COMPLETION_RELAY;
1316 } elseif (!empty($child['thread-completion'])) {
1317 $ldactivity['thread-completion'] = $child['thread-completion'];
1318 $ldactivity['completion-mode'] = $child['completion-mode'] ?? Receiver::COMPLETION_NONE;
1320 $ldactivity['thread-completion'] = Contact::getIdForURL($actor);
1321 $ldactivity['completion-mode'] = $completion;
1324 if (!empty($child['type'])) {
1325 $ldactivity['thread-children-type'] = $child['type'];
1328 if (!empty($relay_actor) && !self::acceptIncomingMessage($ldactivity, $object['id'])) {
1332 ActivityPub\Receiver::processActivity($ldactivity, json_encode($activity), $uid, true, false, $signer);
1334 Logger::notice('Activity had been fetched and processed.', ['url' => $url, 'object' => $activity['id']]);
1336 return $activity['id'];
1340 * Test if incoming relay messages should be accepted
1342 * @param array $activity activity array
1343 * @param string $id object ID
1344 * @return boolean true if message is accepted
1346 private static function acceptIncomingMessage(array $activity, string $id): bool
1348 if (empty($activity['as:object'])) {
1349 Logger::info('No object field in activity - accepted', ['id' => $id]);
1353 $replyto = JsonLD::fetchElement($activity['as:object'], 'as:inReplyTo', '@id');
1354 $uriid = ItemURI::getIdByURI($replyto ?? '');
1355 if (Post::exists(['uri-id' => $uriid])) {
1356 Logger::info('Post is a reply to an existing post - accepted', ['id' => $id, 'uri-id' => $uriid, 'replyto' => $replyto]);
1360 $attributed_to = JsonLD::fetchElement($activity['as:object'], 'as:attributedTo', '@id');
1361 $authorid = Contact::getIdForURL($attributed_to);
1363 $body = HTML::toBBCode(JsonLD::fetchElement($activity['as:object'], 'as:content', '@value') ?? '');
1366 $tags = Receiver::processTags(JsonLD::fetchElementArray($activity['as:object'], 'as:tag') ?? []);
1367 if (!empty($tags)) {
1368 foreach ($tags as $tag) {
1369 if ($tag['type'] != 'Hashtag') {
1372 $messageTags[] = ltrim(mb_strtolower($tag['name']), '#');
1376 return Relay::isSolicitedPost($messageTags, $body, $authorid, $id, Protocol::ACTIVITYPUB);
1380 * perform a "follow" request
1382 * @param array $activity
1384 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1385 * @throws \ImagickException
1387 public static function followUser(array $activity)
1389 $uid = User::getIdForURL($activity['object_id']);
1391 Queue::remove($activity);
1395 $owner = User::getOwnerDataById($uid);
1396 if (empty($owner)) {
1400 $cid = Contact::getIdForURL($activity['actor'], $uid);
1402 self::switchContact($cid);
1403 Contact::update(['hub-verify' => $activity['id'], 'protocol' => Protocol::ACTIVITYPUB], ['id' => $cid]);
1407 'author-id' => Contact::getIdForURL($activity['actor']),
1408 'author-link' => $activity['actor'],
1411 // Ensure that the contact has got the right network type
1412 self::switchContact($item['author-id']);
1414 $result = Contact::addRelationship($owner, [], $item, false, $activity['content'] ?? '');
1415 if ($result === true) {
1416 ActivityPub\Transmitter::sendContactAccept($item['author-link'], $activity['id'], $owner['uid']);
1419 $cid = Contact::getIdForURL($activity['actor'], $uid);
1424 if ($result && DI::config()->get('system', 'transmit_pending_events') && ($owner['contact-type'] == Contact::TYPE_COMMUNITY)) {
1425 self::transmitPendingEvents($cid, $owner['uid']);
1428 if (empty($contact)) {
1429 Contact::update(['hub-verify' => $activity['id'], 'protocol' => Protocol::ACTIVITYPUB], ['id' => $cid]);
1431 Logger::notice('Follow user ' . $uid . ' from contact ' . $cid . ' with id ' . $activity['id']);
1432 Queue::remove($activity);
1436 * Transmit pending events to the new follower
1438 * @param integer $cid Contact id
1439 * @param integer $uid User id
1442 private static function transmitPendingEvents(int $cid, int $uid)
1444 $account = DBA::selectFirst('account-user-view', ['ap-inbox', 'ap-sharedinbox'], ['id' => $cid]);
1445 $inbox = $account['ap-sharedinbox'] ?: $account['ap-inbox'];
1447 $events = DBA::select('event', ['id'], ["`uid` = ? AND `start` > ? AND `type` != ?", $uid, DateTimeFormat::utcNow(), 'birthday']);
1448 while ($event = DBA::fetch($events)) {
1449 $post = Post::selectFirst(['id', 'uri-id', 'created'], ['event-id' => $event['id']]);
1453 if (DI::config()->get('system', 'bulk_delivery')) {
1454 Post\Delivery::add($post['uri-id'], $uid, $inbox, $post['created'], Delivery::POST, [$cid]);
1455 Worker::add(PRIORITY_HIGH, 'APDelivery', '', 0, $inbox, 0);
1457 Worker::add(PRIORITY_HIGH, 'APDelivery', Delivery::POST, $post['id'], $inbox, $uid, [$cid], $post['uri-id']);
1463 * Update the given profile
1465 * @param array $activity
1466 * @throws \Exception
1468 public static function updatePerson(array $activity)
1470 if (empty($activity['object_id'])) {
1474 Logger::info('Updating profile', ['object' => $activity['object_id']]);
1475 Contact::updateFromProbeByURL($activity['object_id']);
1476 Queue::remove($activity);
1480 * Delete the given profile
1482 * @param array $activity
1484 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1486 public static function deletePerson(array $activity)
1488 if (empty($activity['object_id']) || empty($activity['actor'])) {
1489 Logger::info('Empty object id or actor.');
1493 if ($activity['object_id'] != $activity['actor']) {
1494 Logger::info('Object id does not match actor.');
1498 $contacts = DBA::select('contact', ['id'], ['nurl' => Strings::normaliseLink($activity['object_id'])]);
1499 while ($contact = DBA::fetch($contacts)) {
1500 Contact::remove($contact['id']);
1502 DBA::close($contacts);
1504 Logger::info('Deleted contact', ['object' => $activity['object_id']]);
1505 Queue::remove($activity);
1509 * Blocks the user by the contact
1511 * @param array $activity
1513 * @throws \Exception
1515 public static function blockAccount(array $activity)
1517 $cid = Contact::getIdForURL($activity['actor']);
1522 $uid = User::getIdForURL($activity['object_id']);
1527 Contact\User::setIsBlocked($cid, $uid, true);
1529 Logger::info('Contact blocked user', ['contact' => $cid, 'user' => $uid]);
1530 Queue::remove($activity);
1534 * Unblocks the user by the contact
1536 * @param array $activity
1538 * @throws \Exception
1540 public static function unblockAccount(array $activity)
1542 $cid = Contact::getIdForURL($activity['actor']);
1547 $uid = User::getIdForURL($activity['object_object']);
1552 Contact\User::setIsBlocked($cid, $uid, false);
1554 Logger::info('Contact unblocked user', ['contact' => $cid, 'user' => $uid]);
1555 Queue::remove($activity);
1559 * Accept a follow request
1561 * @param array $activity
1562 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1563 * @throws \ImagickException
1565 public static function acceptFollowUser(array $activity)
1567 $uid = User::getIdForURL($activity['object_actor']);
1572 $cid = Contact::getIdForURL($activity['actor'], $uid);
1574 Logger::info('No contact found', ['actor' => $activity['actor']]);
1578 self::switchContact($cid);
1580 $fields = ['pending' => false];
1582 $contact = DBA::selectFirst('contact', ['rel'], ['id' => $cid]);
1583 if ($contact['rel'] == Contact::FOLLOWER) {
1584 $fields['rel'] = Contact::FRIEND;
1587 $condition = ['id' => $cid];
1588 Contact::update($fields, $condition);
1589 Logger::info('Accept contact request', ['contact' => $cid, 'user' => $uid]);
1590 Queue::remove($activity);
1594 * Reject a follow request
1596 * @param array $activity
1597 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1598 * @throws \ImagickException
1600 public static function rejectFollowUser(array $activity)
1602 $uid = User::getIdForURL($activity['object_actor']);
1607 $cid = Contact::getIdForURL($activity['actor'], $uid);
1609 Logger::info('No contact found', ['actor' => $activity['actor']]);
1613 self::switchContact($cid);
1615 $contact = Contact::getById($cid, ['rel']);
1616 if ($contact['rel'] == Contact::SHARING) {
1617 Contact::remove($cid);
1618 Logger::info('Rejected contact request - contact removed', ['contact' => $cid, 'user' => $uid]);
1619 } elseif ($contact['rel'] == Contact::FRIEND) {
1620 Contact::update(['rel' => Contact::FOLLOWER], ['id' => $cid]);
1622 Logger::info('Rejected contact request', ['contact' => $cid, 'user' => $uid]);
1624 Queue::remove($activity);
1628 * Undo activity like "like" or "dislike"
1630 * @param array $activity
1631 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1632 * @throws \ImagickException
1634 public static function undoActivity(array $activity)
1636 if (empty($activity['object_id'])) {
1640 if (empty($activity['object_actor'])) {
1644 $author_id = Contact::getIdForURL($activity['object_actor']);
1645 if (empty($author_id)) {
1649 Item::markForDeletion(['uri' => $activity['object_id'], 'author-id' => $author_id, 'gravity' => GRAVITY_ACTIVITY]);
1650 Queue::remove($activity);
1654 * Activity to remove a follower
1656 * @param array $activity
1657 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1658 * @throws \ImagickException
1660 public static function undoFollowUser(array $activity)
1662 $uid = User::getIdForURL($activity['object_object']);
1667 $owner = User::getOwnerDataById($uid);
1668 if (empty($owner)) {
1672 $cid = Contact::getIdForURL($activity['actor'], $uid);
1674 Logger::info('No contact found', ['actor' => $activity['actor']]);
1678 self::switchContact($cid);
1680 $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
1681 if (!DBA::isResult($contact)) {
1685 Contact::removeFollower($contact);
1686 Logger::info('Undo following request', ['contact' => $cid, 'user' => $uid]);
1687 Queue::remove($activity);
1691 * Switches a contact to AP if needed
1693 * @param integer $cid Contact ID
1695 * @throws \Exception
1697 private static function switchContact(int $cid)
1699 $contact = DBA::selectFirst('contact', ['network', 'url'], ['id' => $cid]);
1700 if (!DBA::isResult($contact) || in_array($contact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN]) || Contact::isLocal($contact['url'])) {
1704 Logger::info('Change existing contact', ['cid' => $cid, 'previous' => $contact['network']]);
1705 Contact::updateFromProbe($cid);
1709 * Collects implicit mentions like:
1710 * - the author of the parent item
1711 * - all the mentioned conversants in the parent item
1713 * @param array $parent Item array with at least ['id', 'author-link', 'alias']
1715 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1717 private static function getImplicitMentionList(array $parent): array
1719 $parent_terms = Tag::getByURIId($parent['uri-id'], [Tag::MENTION, Tag::IMPLICIT_MENTION, Tag::EXCLUSIVE_MENTION]);
1721 $parent_author = Contact::getByURL($parent['author-link'], false, ['url', 'nurl', 'alias']);
1723 $implicit_mentions = [];
1724 if (empty($parent_author['url'])) {
1725 Logger::notice('Author public contact unknown.', ['author-link' => $parent['author-link'], 'parent-id' => $parent['id']]);
1727 $implicit_mentions[] = $parent_author['url'];
1728 $implicit_mentions[] = $parent_author['nurl'];
1729 $implicit_mentions[] = $parent_author['alias'];
1732 if (!empty($parent['alias'])) {
1733 $implicit_mentions[] = $parent['alias'];
1736 foreach ($parent_terms as $term) {
1737 $contact = Contact::getByURL($term['url'], false, ['url', 'nurl', 'alias']);
1738 if (!empty($contact['url'])) {
1739 $implicit_mentions[] = $contact['url'];
1740 $implicit_mentions[] = $contact['nurl'];
1741 $implicit_mentions[] = $contact['alias'];
1745 return $implicit_mentions;
1749 * Strips from the body prepended implicit mentions
1751 * @param string $body
1752 * @param array $parent
1755 private static function removeImplicitMentionsFromBody(string $body, array $parent): string
1757 if (DI::config()->get('system', 'disable_implicit_mentions')) {
1761 $potential_mentions = self::getImplicitMentionList($parent);
1763 $kept_mentions = [];
1765 // Extract one prepended mention at a time from the body
1766 while(preg_match('#^(@\[url=([^\]]+)].*?\[\/url]\s)(.*)#is', $body, $matches)) {
1767 if (!in_array($matches[2], $potential_mentions)) {
1768 $kept_mentions[] = $matches[1];
1771 $body = $matches[3];
1774 // Re-appending the kept mentions to the body after extraction
1775 $kept_mentions[] = $body;
1777 return implode('', $kept_mentions);
1781 * Adds links to string mentions
1783 * @param string $body
1784 * @param array $tags
1787 protected static function addMentionLinks(string $body, array $tags): string
1789 // This prevents links to be added again to Pleroma-style mention links
1790 $body = self::normalizeMentionLinks($body);
1792 $body = BBCode::performWithEscapedTags($body, ['url'], function ($body) use ($tags) {
1793 foreach ($tags as $tag) {
1794 if (empty($tag['name']) || empty($tag['type']) || empty($tag['href']) || !in_array($tag['type'], ['Mention', 'Hashtag'])) {
1798 $hash = substr($tag['name'], 0, 1);
1799 $name = substr($tag['name'], 1);
1800 if (!in_array($hash, Tag::TAG_CHARACTER)) {
1802 $name = $tag['name'];
1805 $body = str_replace($tag['name'], $hash . '[url=' . $tag['href'] . ']' . $name . '[/url]', $body);