3 * @file src/Protocol/ActivityPub/Processor.php
5 namespace Friendica\Protocol\ActivityPub;
7 use Friendica\Database\DBA;
8 use Friendica\Core\Protocol;
9 use Friendica\Model\Conversation;
10 use Friendica\Model\Contact;
11 use Friendica\Model\APContact;
12 use Friendica\Model\Item;
13 use Friendica\Model\User;
14 use Friendica\Content\Text\HTML;
15 use Friendica\Util\JsonLD;
16 use Friendica\Core\Config;
17 use Friendica\Protocol\ActivityPub;
20 * ActivityPub Protocol class
23 * - Store Diaspora signature
28 * Converts mentions from Pleroma into the Friendica format
32 * @return converted body
34 private static function convertMentions($body)
36 $URLSearchString = "^\[\]";
37 $body = preg_replace("/\[url\=([$URLSearchString]*)\]([#@!])(.*?)\[\/url\]/ism", '$2[url=$1]$3[/url]', $body);
43 * Constructs a string with tags for a given tag array
46 * @param boolean $sensitive
48 * @return string with tags
50 private static function constructTagList($tags, $sensitive)
57 foreach ($tags as $tag) {
58 if (in_array(defaults($tag, 'type', ''), ['Mention', 'Hashtag'])) {
59 if (!empty($tag_text)) {
63 $tag_text .= substr($tag['name'], 0, 1) . '[url=' . $tag['href'] . ']' . substr($tag['name'], 1) . '[/url]';
67 /// @todo add nsfw for $sensitive
73 * Add attachment data to the item array
75 * @param array $attachments
80 private static function constructAttachList($attachments, $item)
82 if (empty($attachments)) {
86 foreach ($attachments as $attach) {
87 $filetype = strtolower(substr($attach['mediaType'], 0, strpos($attach['mediaType'], '/')));
88 if ($filetype == 'image') {
89 $item['body'] .= "\n[img]" . $attach['url'] . '[/img]';
91 if (!empty($item["attach"])) {
92 $item["attach"] .= ',';
96 if (!isset($attach['length'])) {
97 $attach['length'] = "0";
99 $item["attach"] .= '[attach]href="'.$attach['url'].'" length="'.$attach['length'].'" type="'.$attach['mediaType'].'" title="'.defaults($attach, 'name', '').'"[/attach]';
107 * Prepares data for a message
109 * @param array $activity Activity array
111 public static function createItem($activity)
114 $item['verb'] = ACTIVITY_POST;
115 $item['parent-uri'] = $activity['reply-to-id'];
117 if ($activity['reply-to-id'] == $activity['id']) {
118 $item['gravity'] = GRAVITY_PARENT;
119 $item['object-type'] = ACTIVITY_OBJ_NOTE;
121 $item['gravity'] = GRAVITY_COMMENT;
122 $item['object-type'] = ACTIVITY_OBJ_COMMENT;
125 if (($activity['id'] != $activity['reply-to-id']) && !Item::exists(['uri' => $activity['reply-to-id']])) {
126 logger('Parent ' . $activity['reply-to-id'] . ' not found. Try to refetch it.');
127 self::fetchMissingActivity($activity['reply-to-id'], $activity);
130 self::postItem($activity, $item);
134 * Prepare the item array for a "like"
136 * @param array $activity Activity array
138 public static function likeItem($activity)
141 $item['verb'] = ACTIVITY_LIKE;
142 $item['parent-uri'] = $activity['object_id'];
143 $item['gravity'] = GRAVITY_ACTIVITY;
144 $item['object-type'] = ACTIVITY_OBJ_NOTE;
146 self::postItem($activity, $item);
152 * @param array $activity
154 public static function deleteItem($activity)
156 $owner = Contact::getIdForURL($activity['actor']);
158 logger('Deleting item ' . $activity['object_id'] . ' from ' . $owner, LOGGER_DEBUG);
159 Item::delete(['uri' => $activity['object_id'], 'owner-id' => $owner]);
163 * Prepare the item array for a "dislike"
165 * @param array $activity Activity array
167 public static function dislikeItem($activity)
170 $item['verb'] = ACTIVITY_DISLIKE;
171 $item['parent-uri'] = $activity['object_id'];
172 $item['gravity'] = GRAVITY_ACTIVITY;
173 $item['object-type'] = ACTIVITY_OBJ_NOTE;
175 self::postItem($activity, $item);
179 * Creates an item post
181 * @param array $activity Activity data
182 * @param array $item item array
184 private static function postItem($activity, $item)
186 /// @todo What to do with $activity['context']?
188 if (($item['gravity'] != GRAVITY_PARENT) && !Item::exists(['uri' => $item['parent-uri']])) {
189 logger('Parent ' . $item['parent-uri'] . ' not found, message will be discarded.', LOGGER_DEBUG);
193 $item['network'] = Protocol::ACTIVITYPUB;
194 $item['private'] = !in_array(0, $activity['receiver']);
195 $item['author-link'] = $activity['author'];
196 $item['author-id'] = Contact::getIdForURL($activity['author'], 0, true);
198 if (empty($activity['thread-completion'])) {
199 $item['owner-link'] = $activity['actor'];
200 $item['owner-id'] = Contact::getIdForURL($activity['actor'], 0, true);
202 logger('Ignoring actor because of thread completion.', LOGGER_DEBUG);
203 $item['owner-link'] = $item['author-link'];
204 $item['owner-id'] = $item['author-id'];
207 $item['uri'] = $activity['id'];
208 $item['created'] = $activity['published'];
209 $item['edited'] = $activity['updated'];
210 $item['guid'] = $activity['diaspora:guid'];
211 $item['title'] = HTML::toBBCode($activity['name']);
212 $item['content-warning'] = HTML::toBBCode($activity['summary']);
213 $item['body'] = self::convertMentions(HTML::toBBCode($activity['content']));
214 $item['location'] = $activity['location'];
215 $item['tag'] = self::constructTagList($activity['tags'], $activity['sensitive']);
216 $item['app'] = $activity['service'];
217 $item['plink'] = defaults($activity, 'alternate-url', $item['uri']);
218 $item['diaspora_signed_text'] = defaults($activity, 'diaspora:comment', '');
220 $item = self::constructAttachList($activity['attachments'], $item);
222 if (!empty($activity['source'])) {
223 $item['body'] = $activity['source'];
226 foreach ($activity['receiver'] as $receiver) {
227 $item['uid'] = $receiver;
228 $item['contact-id'] = Contact::getIdForURL($activity['author'], $receiver, true);
230 if (($receiver != 0) && empty($item['contact-id'])) {
231 $item['contact-id'] = Contact::getIdForURL($activity['author'], 0, true);
234 $item_id = Item::insert($item);
235 logger('Storing for user ' . $item['uid'] . ': ' . $item_id);
240 * Fetches missing posts
245 private static function fetchMissingActivity($url, $child)
247 if (Config::get('system', 'ostatus_full_threads')) {
251 $object = ActivityPub::fetchContent($url);
252 if (empty($object)) {
253 logger('Activity ' . $url . ' was not fetchable, aborting.');
258 $activity['@context'] = $object['@context'];
259 unset($object['@context']);
260 $activity['id'] = $object['id'];
261 $activity['to'] = defaults($object, 'to', []);
262 $activity['cc'] = defaults($object, 'cc', []);
263 $activity['actor'] = $child['author'];
264 $activity['object'] = $object;
265 $activity['published'] = $object['published'];
266 $activity['type'] = 'Create';
268 $ldactivity = JsonLD::compact($activity);
270 $ldactivity['thread-completion'] = true;
272 ActivityPub\Receiver::processActivity($ldactivity);
273 logger('Activity ' . $url . ' had been fetched and processed.');
277 * perform a "follow" request
279 * @param array $activity
281 public static function followUser($activity)
283 $uid = User::getIdForURL($activity['object_id']);
288 $owner = User::getOwnerDataById($uid);
290 $cid = Contact::getIdForURL($activity['actor'], $uid);
292 self::switchContact($cid);
293 $contact = DBA::selectFirst('contact', [], ['id' => $cid, 'network' => Protocol::NATIVE_SUPPORT]);
298 $item = ['author-id' => Contact::getIdForURL($activity['actor']),
299 'author-link' => $activity['actor']];
301 // Ensure that the contact has got the right network type
302 self::switchContact($item['author-id']);
304 Contact::addRelationship($owner, $contact, $item);
305 $cid = Contact::getIdForURL($activity['actor'], $uid);
310 DBA::update('contact', ['hub-verify' => $activity['id']], ['id' => $cid]);
311 logger('Follow user ' . $uid . ' from contact ' . $cid . ' with id ' . $activity['id']);
315 * Update the given profile
317 * @param array $activity
319 public static function updatePerson($activity)
321 if (empty($activity['object_id'])) {
325 logger('Updating profile for ' . $activity['object_id'], LOGGER_DEBUG);
326 APContact::getByURL($activity['object_id'], true);
330 * Delete the given profile
332 * @param array $activity
334 public static function deletePerson($activity)
336 if (empty($activity['object_id']) || empty($activity['actor'])) {
337 logger('Empty object id or actor.', LOGGER_DEBUG);
341 if ($activity['object_id'] != $activity['actor']) {
342 logger('Object id does not match actor.', LOGGER_DEBUG);
346 $contacts = DBA::select('contact', ['id'], ['nurl' => normalise_link($activity['object_id'])]);
347 while ($contact = DBA::fetch($contacts)) {
348 Contact::remove($contact['id']);
350 DBA::close($contacts);
352 logger('Deleted contact ' . $activity['object_id'], LOGGER_DEBUG);
356 * Accept a follow request
358 * @param array $activity
360 public static function acceptFollowUser($activity)
362 $uid = User::getIdForURL($activity['object_actor']);
367 $owner = User::getOwnerDataById($uid);
369 $cid = Contact::getIdForURL($activity['actor'], $uid);
371 logger('No contact found for ' . $activity['actor'], LOGGER_DEBUG);
375 self::switchContact($cid);
377 $fields = ['pending' => false];
379 $contact = DBA::selectFirst('contact', ['rel'], ['id' => $cid]);
380 if ($contact['rel'] == Contact::FOLLOWER) {
381 $fields['rel'] = Contact::FRIEND;
384 $condition = ['id' => $cid];
385 DBA::update('contact', $fields, $condition);
386 logger('Accept contact request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG);
390 * Reject a follow request
392 * @param array $activity
394 public static function rejectFollowUser($activity)
396 $uid = User::getIdForURL($activity['object_actor']);
401 $owner = User::getOwnerDataById($uid);
403 $cid = Contact::getIdForURL($activity['actor'], $uid);
405 logger('No contact found for ' . $activity['actor'], LOGGER_DEBUG);
409 self::switchContact($cid);
411 if (DBA::exists('contact', ['id' => $cid, 'rel' => Contact::SHARING, 'pending' => true])) {
412 Contact::remove($cid);
413 logger('Rejected contact request from contact ' . $cid . ' for user ' . $uid . ' - contact had been removed.', LOGGER_DEBUG);
415 logger('Rejected contact request from contact ' . $cid . ' for user ' . $uid . '.', LOGGER_DEBUG);
420 * Undo activity like "like" or "dislike"
422 * @param array $activity
424 public static function undoActivity($activity)
426 if (empty($activity['object_id'])) {
430 if (empty($activity['object_actor'])) {
434 $author_id = Contact::getIdForURL($activity['object_actor']);
435 if (empty($author_id)) {
439 Item::delete(['uri' => $activity['object_id'], 'author-id' => $author_id, 'gravity' => GRAVITY_ACTIVITY]);
443 * Activity to remove a follower
445 * @param array $activity
447 public static function undoFollowUser($activity)
449 $uid = User::getIdForURL($activity['object_object']);
454 $owner = User::getOwnerDataById($uid);
456 $cid = Contact::getIdForURL($activity['actor'], $uid);
458 logger('No contact found for ' . $activity['actor'], LOGGER_DEBUG);
462 self::switchContact($cid);
464 $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
465 if (!DBA::isResult($contact)) {
469 Contact::removeFollower($owner, $contact);
470 logger('Undo following request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG);
474 * Switches a contact to AP if needed
476 * @param integer $cid Contact ID
478 private static function switchContact($cid)
480 $contact = DBA::selectFirst('contact', ['network'], ['id' => $cid, 'network' => Protocol::NATIVE_SUPPORT]);
481 if (!DBA::isResult($contact) || ($contact['network'] == Protocol::ACTIVITYPUB)) {
485 logger('Change existing contact ' . $cid . ' from ' . $contact['network'] . ' to ActivityPub.');
486 Contact::updateFromProbe($cid, Protocol::ACTIVITYPUB);