$page = defaults($_REQUEST, 'page', null);
- $followers = ActivityPub::getFollowers($owner, $page);
+ $followers = ActivityPub\Transmitter::getFollowers($owner, $page);
header('Content-Type: application/activity+json');
echo json_encode($followers);
$page = defaults($_REQUEST, 'page', null);
- $Following = ActivityPub::getFollowing($owner, $page);
+ $Following = ActivityPub\Transmitter::getFollowing($owner, $page);
header('Content-Type: application/activity+json');
echo json_encode($Following);
$page = defaults($_REQUEST, 'page', null);
- $outbox = ActivityPub::getOutbox($owner, $page);
+ $outbox = ActivityPub\Transmitter::getOutbox($owner, $page);
header('Content-Type: application/activity+json');
echo json_encode($outbox);
stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/ld+json');
}
- /**
- * @brief collects the lost of followers of the given owner
- *
- * @param array $owner Owner array
- * @param integer $page Page number
- *
- * @return array of owners
- */
- public static function getFollowers($owner, $page = null)
- {
- $condition = ['rel' => [Contact::FOLLOWER, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'],
- 'self' => false, 'hidden' => false, 'archive' => false, 'pending' => false];
- $count = DBA::count('contact', $condition);
-
- $data = ['@context' => self::CONTEXT];
- $data['id'] = System::baseUrl() . '/followers/' . $owner['nickname'];
- $data['type'] = 'OrderedCollection';
- $data['totalItems'] = $count;
-
- // When we hide our friends we will only show the pure number but don't allow more.
- $profile = Profile::getByUID($owner['uid']);
- if (!empty($profile['hide-friends'])) {
- return $data;
- }
-
- if (empty($page)) {
- $data['first'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=1';
- } else {
- $list = [];
-
- $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]);
- while ($contact = DBA::fetch($contacts)) {
- $list[] = $contact['url'];
- }
-
- if (!empty($list)) {
- $data['next'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=' . ($page + 1);
- }
-
- $data['partOf'] = System::baseUrl() . '/followers/' . $owner['nickname'];
-
- $data['orderedItems'] = $list;
- }
-
- return $data;
- }
-
- /**
- * @brief Create list of following contacts
- *
- * @param array $owner Owner array
- * @param integer $page Page numbe
- *
- * @return array of following contacts
- */
- public static function getFollowing($owner, $page = null)
- {
- $condition = ['rel' => [Contact::SHARING, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'],
- 'self' => false, 'hidden' => false, 'archive' => false, 'pending' => false];
- $count = DBA::count('contact', $condition);
-
- $data = ['@context' => self::CONTEXT];
- $data['id'] = System::baseUrl() . '/following/' . $owner['nickname'];
- $data['type'] = 'OrderedCollection';
- $data['totalItems'] = $count;
-
- // When we hide our friends we will only show the pure number but don't allow more.
- $profile = Profile::getByUID($owner['uid']);
- if (!empty($profile['hide-friends'])) {
- return $data;
- }
-
- if (empty($page)) {
- $data['first'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=1';
- } else {
- $list = [];
-
- $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]);
- while ($contact = DBA::fetch($contacts)) {
- $list[] = $contact['url'];
- }
-
- if (!empty($list)) {
- $data['next'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=' . ($page + 1);
- }
-
- $data['partOf'] = System::baseUrl() . '/following/' . $owner['nickname'];
-
- $data['orderedItems'] = $list;
- }
-
- return $data;
- }
-
- /**
- * @brief Public posts for the given owner
- *
- * @param array $owner Owner array
- * @param integer $page Page numbe
- *
- * @return array of posts
- */
- public static function getOutbox($owner, $page = null)
- {
- $public_contact = Contact::getIdForURL($owner['url'], 0, true);
-
- $condition = ['uid' => $owner['uid'], 'contact-id' => $owner['id'], 'author-id' => $public_contact,
- 'wall' => true, 'private' => false, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT],
- 'deleted' => false, 'visible' => true];
- $count = DBA::count('item', $condition);
-
- $data = ['@context' => self::CONTEXT];
- $data['id'] = System::baseUrl() . '/outbox/' . $owner['nickname'];
- $data['type'] = 'OrderedCollection';
- $data['totalItems'] = $count;
-
- if (empty($page)) {
- $data['first'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=1';
- } else {
- $list = [];
-
- $condition['parent-network'] = Protocol::NATIVE_SUPPORT;
-
- $items = Item::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
- while ($item = Item::fetch($items)) {
- $object = self::createObjectFromItemID($item['id']);
- unset($object['@context']);
- $list[] = $object;
- }
-
- if (!empty($list)) {
- $data['next'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1);
- }
-
- $data['partOf'] = System::baseUrl() . '/outbox/' . $owner['nickname'];
-
- $data['orderedItems'] = $list;
- }
-
- return $data;
- }
-
/**
* Return the ActivityPub profile of the given user
*
--- /dev/null
+<?php
+/**
+ * @file src/Protocol/ActivityPub.php
+ */
+namespace Friendica\Protocol\ActivityPub;
+
+use Friendica\Database\DBA;
+use Friendica\Core\System;
+use Friendica\BaseObject;
+use Friendica\Util\Network;
+use Friendica\Util\HTTPSignature;
+use Friendica\Core\Protocol;
+use Friendica\Model\Conversation;
+use Friendica\Model\Contact;
+use Friendica\Model\APContact;
+use Friendica\Model\Item;
+use Friendica\Model\Profile;
+use Friendica\Model\Term;
+use Friendica\Model\User;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Crypto;
+use Friendica\Content\Text\BBCode;
+use Friendica\Content\Text\HTML;
+use Friendica\Util\JsonLD;
+use Friendica\Util\LDSignature;
+use Friendica\Core\Config;
+use Friendica\Protocol\ActivityPub;
+
+/**
+ * @brief ActivityPub Protocol class
+ */
+class Processor
+{
+ /**
+ * @brief Converts mentions from Pleroma into the Friendica format
+ *
+ * @param string $body
+ *
+ * @return converted body
+ */
+ private static function convertMentions($body)
+ {
+ $URLSearchString = "^\[\]";
+ $body = preg_replace("/\[url\=([$URLSearchString]*)\]([#@!])(.*?)\[\/url\]/ism", '$2[url=$1]$3[/url]', $body);
+
+ return $body;
+ }
+
+ /**
+ * @brief Constructs a string with tags for a given tag array
+ *
+ * @param array $tags
+ * @param boolean $sensitive
+ *
+ * @return string with tags
+ */
+ private static function constructTagList($tags, $sensitive)
+ {
+ if (empty($tags)) {
+ return '';
+ }
+
+ $tag_text = '';
+ foreach ($tags as $tag) {
+ if (in_array($tag['type'], ['Mention', 'Hashtag'])) {
+ if (!empty($tag_text)) {
+ $tag_text .= ',';
+ }
+
+ $tag_text .= substr($tag['name'], 0, 1) . '[url=' . $tag['href'] . ']' . substr($tag['name'], 1) . '[/url]';
+ }
+ }
+
+ /// @todo add nsfw for $sensitive
+
+ return $tag_text;
+ }
+
+ /**
+ * @brief
+ *
+ * @param $attachments
+ * @param array $item
+ *
+ * @return item array
+ */
+ private static function constructAttachList($attachments, $item)
+ {
+ if (empty($attachments)) {
+ return $item;
+ }
+
+ foreach ($attachments as $attach) {
+ $filetype = strtolower(substr($attach['mediaType'], 0, strpos($attach['mediaType'], '/')));
+ if ($filetype == 'image') {
+ $item['body'] .= "\n[img]".$attach['url'].'[/img]';
+ } else {
+ if (!empty($item["attach"])) {
+ $item["attach"] .= ',';
+ } else {
+ $item["attach"] = '';
+ }
+ if (!isset($attach['length'])) {
+ $attach['length'] = "0";
+ }
+ $item["attach"] .= '[attach]href="'.$attach['url'].'" length="'.$attach['length'].'" type="'.$attach['mediaType'].'" title="'.defaults($attach, 'name', '').'"[/attach]';
+ }
+ }
+
+ return $item;
+ }
+
+ /**
+ * @brief
+ *
+ * @param array $activity
+ * @param $body
+ */
+ private static function createItem($activity, $body)
+ {
+ $item = [];
+ $item['verb'] = ACTIVITY_POST;
+ $item['parent-uri'] = $activity['reply-to-id'];
+
+ if ($activity['reply-to-id'] == $activity['id']) {
+ $item['gravity'] = GRAVITY_PARENT;
+ $item['object-type'] = ACTIVITY_OBJ_NOTE;
+ } else {
+ $item['gravity'] = GRAVITY_COMMENT;
+ $item['object-type'] = ACTIVITY_OBJ_COMMENT;
+ }
+
+ if (($activity['id'] != $activity['reply-to-id']) && !Item::exists(['uri' => $activity['reply-to-id']])) {
+ logger('Parent ' . $activity['reply-to-id'] . ' not found. Try to refetch it.');
+ self::fetchMissingActivity($activity['reply-to-id'], $activity);
+ }
+
+ self::postItem($activity, $item, $body);
+ }
+
+ /**
+ * @brief
+ *
+ * @param array $activity
+ * @param $body
+ */
+ private static function likeItem($activity, $body)
+ {
+ $item = [];
+ $item['verb'] = ACTIVITY_LIKE;
+ $item['parent-uri'] = $activity['object'];
+ $item['gravity'] = GRAVITY_ACTIVITY;
+ $item['object-type'] = ACTIVITY_OBJ_NOTE;
+
+ self::postItem($activity, $item, $body);
+ }
+
+ /**
+ * @brief Delete items
+ *
+ * @param array $activity
+ * @param $body
+ */
+ private static function deleteItem($activity)
+ {
+ $owner = Contact::getIdForURL($activity['owner']);
+ $object = JsonLD::fetchElement($activity, 'object', 'id');
+ logger('Deleting item ' . $object . ' from ' . $owner, LOGGER_DEBUG);
+ Item::delete(['uri' => $object, 'owner-id' => $owner]);
+ }
+
+ /**
+ * @brief
+ *
+ * @param array $activity
+ * @param $body
+ */
+ private static function dislikeItem($activity, $body)
+ {
+ $item = [];
+ $item['verb'] = ACTIVITY_DISLIKE;
+ $item['parent-uri'] = $activity['object'];
+ $item['gravity'] = GRAVITY_ACTIVITY;
+ $item['object-type'] = ACTIVITY_OBJ_NOTE;
+
+ self::postItem($activity, $item, $body);
+ }
+
+ /**
+ * @brief
+ *
+ * @param array $activity
+ * @param array $item
+ * @param $body
+ */
+ private static function postItem($activity, $item, $body)
+ {
+ /// @todo What to do with $activity['context']?
+
+ if (($item['gravity'] != GRAVITY_PARENT) && !Item::exists(['uri' => $item['parent-uri']])) {
+ logger('Parent ' . $item['parent-uri'] . ' not found, message will be discarded.', LOGGER_DEBUG);
+ return;
+ }
+
+ $item['network'] = Protocol::ACTIVITYPUB;
+ $item['private'] = !in_array(0, $activity['receiver']);
+ $item['author-id'] = Contact::getIdForURL($activity['author'], 0, true);
+ $item['owner-id'] = Contact::getIdForURL($activity['owner'], 0, true);
+ $item['uri'] = $activity['id'];
+ $item['created'] = $activity['published'];
+ $item['edited'] = $activity['updated'];
+ $item['guid'] = $activity['diaspora:guid'];
+ $item['title'] = HTML::toBBCode($activity['name']);
+ $item['content-warning'] = HTML::toBBCode($activity['summary']);
+ $item['body'] = self::convertMentions(HTML::toBBCode($activity['content']));
+ $item['location'] = $activity['location'];
+ $item['tag'] = self::constructTagList($activity['tags'], $activity['sensitive']);
+ $item['app'] = $activity['service'];
+ $item['plink'] = defaults($activity, 'alternate-url', $item['uri']);
+
+ $item = self::constructAttachList($activity['attachments'], $item);
+
+ $source = JsonLD::fetchElement($activity, 'source', 'content', 'mediaType', 'text/bbcode');
+ if (!empty($source)) {
+ $item['body'] = $source;
+ }
+
+ $item['protocol'] = Conversation::PARCEL_ACTIVITYPUB;
+ $item['source'] = $body;
+ $item['conversation-href'] = $activity['context'];
+ $item['conversation-uri'] = $activity['conversation'];
+
+ foreach ($activity['receiver'] as $receiver) {
+ $item['uid'] = $receiver;
+ $item['contact-id'] = Contact::getIdForURL($activity['author'], $receiver, true);
+
+ if (($receiver != 0) && empty($item['contact-id'])) {
+ $item['contact-id'] = Contact::getIdForURL($activity['author'], 0, true);
+ }
+
+ $item_id = Item::insert($item);
+ logger('Storing for user ' . $item['uid'] . ': ' . $item_id);
+ }
+ }
+
+ /**
+ * @brief
+ *
+ * @param $url
+ * @param $child
+ */
+ private static function fetchMissingActivity($url, $child)
+ {
+ if (Config::get('system', 'ostatus_full_threads')) {
+ return;
+ }
+
+ $object = ActivityPub::fetchContent($url);
+ if (empty($object)) {
+ logger('Activity ' . $url . ' was not fetchable, aborting.');
+ return;
+ }
+
+ $activity = [];
+ $activity['@context'] = $object['@context'];
+ unset($object['@context']);
+ $activity['id'] = $object['id'];
+ $activity['to'] = defaults($object, 'to', []);
+ $activity['cc'] = defaults($object, 'cc', []);
+ $activity['actor'] = $child['author'];
+ $activity['object'] = $object;
+ $activity['published'] = $object['published'];
+ $activity['type'] = 'Create';
+
+ ActivityPub::processActivity($activity);
+ logger('Activity ' . $url . ' had been fetched and processed.');
+ }
+
+ /**
+ * @brief perform a "follow" request
+ *
+ * @param array $activity
+ */
+ private static function followUser($activity)
+ {
+ $actor = JsonLD::fetchElement($activity, 'object', 'id');
+ $uid = User::getIdForURL($actor);
+ if (empty($uid)) {
+ return;
+ }
+
+ $owner = User::getOwnerDataById($uid);
+
+ $cid = Contact::getIdForURL($activity['owner'], $uid);
+ if (!empty($cid)) {
+ $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
+ } else {
+ $contact = false;
+ }
+
+ $item = ['author-id' => Contact::getIdForURL($activity['owner']),
+ 'author-link' => $activity['owner']];
+
+ Contact::addRelationship($owner, $contact, $item);
+ $cid = Contact::getIdForURL($activity['owner'], $uid);
+ if (empty($cid)) {
+ return;
+ }
+
+ $contact = DBA::selectFirst('contact', ['network'], ['id' => $cid]);
+ if ($contact['network'] != Protocol::ACTIVITYPUB) {
+ Contact::updateFromProbe($cid, Protocol::ACTIVITYPUB);
+ }
+
+ DBA::update('contact', ['hub-verify' => $activity['id']], ['id' => $cid]);
+ logger('Follow user ' . $uid . ' from contact ' . $cid . ' with id ' . $activity['id']);
+ }
+
+ /**
+ * @brief Update the given profile
+ *
+ * @param array $activity
+ */
+ private static function updatePerson($activity)
+ {
+ if (empty($activity['object']['id'])) {
+ return;
+ }
+
+ logger('Updating profile for ' . $activity['object']['id'], LOGGER_DEBUG);
+ APContact::getByURL($activity['object']['id'], true);
+ }
+
+ /**
+ * @brief Delete the given profile
+ *
+ * @param array $activity
+ */
+ private static function deletePerson($activity)
+ {
+ if (empty($activity['object']['id']) || empty($activity['object']['actor'])) {
+ logger('Empty object id or actor.', LOGGER_DEBUG);
+ return;
+ }
+
+ if ($activity['object']['id'] != $activity['object']['actor']) {
+ logger('Object id does not match actor.', LOGGER_DEBUG);
+ return;
+ }
+
+ $contacts = DBA::select('contact', ['id'], ['nurl' => normalise_link($activity['object']['id'])]);
+ while ($contact = DBA::fetch($contacts)) {
+ Contact::remove($contact["id"]);
+ }
+ DBA::close($contacts);
+
+ logger('Deleted contact ' . $activity['object']['id'], LOGGER_DEBUG);
+ }
+
+ /**
+ * @brief Accept a follow request
+ *
+ * @param array $activity
+ */
+ private static function acceptFollowUser($activity)
+ {
+ $actor = JsonLD::fetchElement($activity, 'object', 'actor');
+ $uid = User::getIdForURL($actor);
+ if (empty($uid)) {
+ return;
+ }
+
+ $owner = User::getOwnerDataById($uid);
+
+ $cid = Contact::getIdForURL($activity['owner'], $uid);
+ if (empty($cid)) {
+ logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG);
+ return;
+ }
+
+ $fields = ['pending' => false];
+
+ $contact = DBA::selectFirst('contact', ['rel'], ['id' => $cid]);
+ if ($contact['rel'] == Contact::FOLLOWER) {
+ $fields['rel'] = Contact::FRIEND;
+ }
+
+ $condition = ['id' => $cid];
+ DBA::update('contact', $fields, $condition);
+ logger('Accept contact request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG);
+ }
+
+ /**
+ * @brief Reject a follow request
+ *
+ * @param array $activity
+ */
+ private static function rejectFollowUser($activity)
+ {
+ $actor = JsonLD::fetchElement($activity, 'object', 'actor');
+ $uid = User::getIdForURL($actor);
+ if (empty($uid)) {
+ return;
+ }
+
+ $owner = User::getOwnerDataById($uid);
+
+ $cid = Contact::getIdForURL($activity['owner'], $uid);
+ if (empty($cid)) {
+ logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG);
+ return;
+ }
+
+ if (DBA::exists('contact', ['id' => $cid, 'rel' => Contact::SHARING, 'pending' => true])) {
+ Contact::remove($cid);
+ logger('Rejected contact request from contact ' . $cid . ' for user ' . $uid . ' - contact had been removed.', LOGGER_DEBUG);
+ } else {
+ logger('Rejected contact request from contact ' . $cid . ' for user ' . $uid . '.', LOGGER_DEBUG);
+ }
+ }
+
+ /**
+ * @brief Undo activity like "like" or "dislike"
+ *
+ * @param array $activity
+ */
+ private static function undoActivity($activity)
+ {
+ $activity_url = JsonLD::fetchElement($activity, 'object', 'id');
+ if (empty($activity_url)) {
+ return;
+ }
+
+ $actor = JsonLD::fetchElement($activity, 'object', 'actor');
+ if (empty($actor)) {
+ return;
+ }
+
+ $author_id = Contact::getIdForURL($actor);
+ if (empty($author_id)) {
+ return;
+ }
+
+ Item::delete(['uri' => $activity_url, 'author-id' => $author_id, 'gravity' => GRAVITY_ACTIVITY]);
+ }
+
+ /**
+ * @brief Activity to remove a follower
+ *
+ * @param array $activity
+ */
+ private static function undoFollowUser($activity)
+ {
+ $object = JsonLD::fetchElement($activity, 'object', 'object');
+ $uid = User::getIdForURL($object);
+ if (empty($uid)) {
+ return;
+ }
+
+ $owner = User::getOwnerDataById($uid);
+
+ $cid = Contact::getIdForURL($activity['owner'], $uid);
+ if (empty($cid)) {
+ logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG);
+ return;
+ }
+
+ $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
+ if (!DBA::isResult($contact)) {
+ return;
+ }
+
+ Contact::removeFollower($owner, $contact);
+ logger('Undo following request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG);
+ }
+}
--- /dev/null
+<?php
+/**
+ * @file src/Protocol/ActivityPub.php
+ */
+namespace Friendica\Protocol\ActivityPub;
+
+use Friendica\Database\DBA;
+use Friendica\Core\System;
+use Friendica\BaseObject;
+use Friendica\Util\Network;
+use Friendica\Util\HTTPSignature;
+use Friendica\Core\Protocol;
+use Friendica\Model\Conversation;
+use Friendica\Model\Contact;
+use Friendica\Model\APContact;
+use Friendica\Model\Item;
+use Friendica\Model\Profile;
+use Friendica\Model\Term;
+use Friendica\Model\User;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Crypto;
+use Friendica\Content\Text\BBCode;
+use Friendica\Content\Text\HTML;
+use Friendica\Util\JsonLD;
+use Friendica\Util\LDSignature;
+use Friendica\Core\Config;
+use Friendica\Protocol\ActivityPub;
+
+/**
+ * @brief ActivityPub Protocol class
+ */
+class Receiver
+{
+ /**
+ * @brief Checks if the web request is done for the AP protocol
+ *
+ * @return is it AP?
+ */
+ public static function isRequest()
+ {
+ return stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/activity+json') ||
+ stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/ld+json');
+ }
+
+ /**
+ * @brief
+ *
+ * @param $body
+ * @param $header
+ * @param integer $uid User ID
+ */
+ public static function processInbox($body, $header, $uid)
+ {
+ $http_signer = HTTPSignature::getSigner($body, $header);
+ if (empty($http_signer)) {
+ logger('Invalid HTTP signature, message will be discarded.', LOGGER_DEBUG);
+ return;
+ } else {
+ logger('HTTP signature is signed by ' . $http_signer, LOGGER_DEBUG);
+ }
+
+ $activity = json_decode($body, true);
+
+ $actor = JsonLD::fetchElement($activity, 'actor', 'id');
+ logger('Message for user ' . $uid . ' is from actor ' . $actor, LOGGER_DEBUG);
+
+ if (empty($activity)) {
+ logger('Invalid body.', LOGGER_DEBUG);
+ return;
+ }
+
+ if (LDSignature::isSigned($activity)) {
+ $ld_signer = LDSignature::getSigner($activity);
+ if (empty($ld_signer)) {
+ logger('Invalid JSON-LD signature from ' . $actor, LOGGER_DEBUG);
+ }
+ if (!empty($ld_signer && ($actor == $http_signer))) {
+ logger('The HTTP and the JSON-LD signature belong to ' . $ld_signer, LOGGER_DEBUG);
+ $trust_source = true;
+ } elseif (!empty($ld_signer)) {
+ logger('JSON-LD signature is signed by ' . $ld_signer, LOGGER_DEBUG);
+ $trust_source = true;
+ } elseif ($actor == $http_signer) {
+ logger('Bad JSON-LD signature, but HTTP signer fits the actor.', LOGGER_DEBUG);
+ $trust_source = true;
+ } else {
+ logger('Invalid JSON-LD signature and the HTTP signer is different.', LOGGER_DEBUG);
+ $trust_source = false;
+ }
+ } elseif ($actor == $http_signer) {
+ logger('Trusting post without JSON-LD signature, The actor fits the HTTP signer.', LOGGER_DEBUG);
+ $trust_source = true;
+ } else {
+ logger('No JSON-LD signature, different actor.', LOGGER_DEBUG);
+ $trust_source = false;
+ }
+
+ ActivityPub::processActivity($activity, $body, $uid, $trust_source);
+ }
+
+ /**
+ * @brief
+ *
+ * @param array $activity
+ * @param integer $uid User ID
+ * @param $trust_source
+ *
+ * @return
+ */
+ private static function prepareObjectData($activity, $uid, &$trust_source)
+ {
+ $actor = JsonLD::fetchElement($activity, 'actor', 'id');
+ if (empty($actor)) {
+ logger('Empty actor', LOGGER_DEBUG);
+ return [];
+ }
+
+ // Fetch all receivers from to, cc, bto and bcc
+ $receivers = ActivityPub::getReceivers($activity, $actor);
+
+ // When it is a delivery to a personal inbox we add that user to the receivers
+ if (!empty($uid)) {
+ $owner = User::getOwnerDataById($uid);
+ $additional = ['uid:' . $uid => $uid];
+ $receivers = array_merge($receivers, $additional);
+ }
+
+ logger('Receivers: ' . json_encode($receivers), LOGGER_DEBUG);
+
+ $object_id = JsonLD::fetchElement($activity, 'object', 'id');
+ if (empty($object_id)) {
+ logger('No object found', LOGGER_DEBUG);
+ return [];
+ }
+
+ // Fetch the content only on activities where this matters
+ if (in_array($activity['type'], ['Create', 'Announce'])) {
+ $object_data = ActivityPub::fetchObject($object_id, $activity['object'], $trust_source);
+ if (empty($object_data)) {
+ logger("Object data couldn't be processed", LOGGER_DEBUG);
+ return [];
+ }
+ // We had been able to retrieve the object data - so we can trust the source
+ $trust_source = true;
+ } elseif (in_array($activity['type'], ['Like', 'Dislike'])) {
+ // Create a mostly empty array out of the activity data (instead of the object).
+ // This way we later don't have to check for the existence of ech individual array element.
+ $object_data = ActivityPub::processObject($activity);
+ $object_data['name'] = $activity['type'];
+ $object_data['author'] = $activity['actor'];
+ $object_data['object'] = $object_id;
+ $object_data['object_type'] = ''; // Since we don't fetch the object, we don't know the type
+ } else {
+ $object_data = [];
+ $object_data['id'] = $activity['id'];
+ $object_data['object'] = $activity['object'];
+ $object_data['object_type'] = JsonLD::fetchElement($activity, 'object', 'type');
+ }
+
+ $object_data = ActivityPub::addActivityFields($object_data, $activity);
+
+ $object_data['type'] = $activity['type'];
+ $object_data['owner'] = $actor;
+ $object_data['receiver'] = array_merge(defaults($object_data, 'receiver', []), $receivers);
+
+ logger('Processing ' . $object_data['type'] . ' ' . $object_data['object_type'] . ' ' . $object_data['id'], LOGGER_DEBUG);
+
+ return $object_data;
+ }
+
+ /**
+ * @brief
+ *
+ * @param array $activity
+ * @param $body
+ * @param integer $uid User ID
+ * @param $trust_source
+ */
+ private static function processActivity($activity, $body = '', $uid = null, $trust_source = false)
+ {
+ if (empty($activity['type'])) {
+ logger('Empty type', LOGGER_DEBUG);
+ return;
+ }
+
+ if (empty($activity['object'])) {
+ logger('Empty object', LOGGER_DEBUG);
+ return;
+ }
+
+ if (empty($activity['actor'])) {
+ logger('Empty actor', LOGGER_DEBUG);
+ return;
+
+ }
+
+ // $trust_source is called by reference and is set to true if the content was retrieved successfully
+ $object_data = ActivityPub::prepareObjectData($activity, $uid, $trust_source);
+ if (empty($object_data)) {
+ logger('No object data found', LOGGER_DEBUG);
+ return;
+ }
+
+ if (!$trust_source) {
+ logger('No trust for activity type "' . $activity['type'] . '", so we quit now.', LOGGER_DEBUG);
+ }
+
+ switch ($activity['type']) {
+ case 'Create':
+ case 'Announce':
+ ActivityPub::createItem($object_data, $body);
+ break;
+
+ case 'Like':
+ ActivityPub::likeItem($object_data, $body);
+ break;
+
+ case 'Dislike':
+ ActivityPub::dislikeItem($object_data, $body);
+ break;
+
+ case 'Update':
+ if (in_array($object_data['object_type'], ActivityPub::CONTENT_TYPES)) {
+ /// @todo
+ } elseif (in_array($object_data['object_type'], ActivityPub::ACCOUNT_TYPES)) {
+ ActivityPub::updatePerson($object_data, $body);
+ }
+ break;
+
+ case 'Delete':
+ if ($object_data['object_type'] == 'Tombstone') {
+ ActivityPub::deleteItem($object_data, $body);
+ } elseif (in_array($object_data['object_type'], ActivityPub::ACCOUNT_TYPES)) {
+ ActivityPub::deletePerson($object_data, $body);
+ }
+ break;
+
+ case 'Follow':
+ ActivityPub::followUser($object_data);
+ break;
+
+ case 'Accept':
+ if ($object_data['object_type'] == 'Follow') {
+ ActivityPub::acceptFollowUser($object_data);
+ }
+ break;
+
+ case 'Reject':
+ if ($object_data['object_type'] == 'Follow') {
+ ActivityPub::rejectFollowUser($object_data);
+ }
+ break;
+
+ case 'Undo':
+ if ($object_data['object_type'] == 'Follow') {
+ ActivityPub::undoFollowUser($object_data);
+ } elseif (in_array($object_data['object_type'], ActivityPub::ACTIVITY_TYPES)) {
+ ActivityPub::undoActivity($object_data);
+ }
+ break;
+
+ default:
+ logger('Unknown activity: ' . $activity['type'], LOGGER_DEBUG);
+ break;
+ }
+ }
+
+ /**
+ * @brief
+ *
+ * @param array $activity
+ * @param $actor
+ *
+ * @return
+ */
+ private static function getReceivers($activity, $actor)
+ {
+ $receivers = [];
+
+ // When it is an answer, we inherite the receivers from the parent
+ $replyto = JsonLD::fetchElement($activity, 'inReplyTo', 'id');
+ if (!empty($replyto)) {
+ $parents = Item::select(['uid'], ['uri' => $replyto]);
+ while ($parent = Item::fetch($parents)) {
+ $receivers['uid:' . $parent['uid']] = $parent['uid'];
+ }
+ }
+
+ if (!empty($actor)) {
+ $profile = APContact::getByURL($actor);
+ $followers = defaults($profile, 'followers', '');
+
+ logger('Actor: ' . $actor . ' - Followers: ' . $followers, LOGGER_DEBUG);
+ } else {
+ logger('Empty actor', LOGGER_DEBUG);
+ $followers = '';
+ }
+
+ foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
+ if (empty($activity[$element])) {
+ continue;
+ }
+
+ // The receiver can be an array or a string
+ if (is_string($activity[$element])) {
+ $activity[$element] = [$activity[$element]];
+ }
+
+ foreach ($activity[$element] as $receiver) {
+ if ($receiver == ActivityPub::PUBLIC_COLLECTION) {
+ $receivers['uid:0'] = 0;
+ }
+
+ if (($receiver == ActivityPub::PUBLIC_COLLECTION) && !empty($actor)) {
+ // This will most likely catch all OStatus connections to Mastodon
+ $condition = ['alias' => [$actor, normalise_link($actor)], 'rel' => [Contact::SHARING, Contact::FRIEND]
+ , 'archive' => false, 'pending' => false];
+ $contacts = DBA::select('contact', ['uid'], $condition);
+ while ($contact = DBA::fetch($contacts)) {
+ if ($contact['uid'] != 0) {
+ $receivers['uid:' . $contact['uid']] = $contact['uid'];
+ }
+ }
+ DBA::close($contacts);
+ }
+
+ if (in_array($receiver, [$followers, ActivityPub::PUBLIC_COLLECTION]) && !empty($actor)) {
+ $condition = ['nurl' => normalise_link($actor), 'rel' => [Contact::SHARING, Contact::FRIEND],
+ 'network' => Protocol::ACTIVITYPUB, 'archive' => false, 'pending' => false];
+ $contacts = DBA::select('contact', ['uid'], $condition);
+ while ($contact = DBA::fetch($contacts)) {
+ if ($contact['uid'] != 0) {
+ $receivers['uid:' . $contact['uid']] = $contact['uid'];
+ }
+ }
+ DBA::close($contacts);
+ continue;
+ }
+
+ $condition = ['self' => true, 'nurl' => normalise_link($receiver)];
+ $contact = DBA::selectFirst('contact', ['uid'], $condition);
+ if (!DBA::isResult($contact)) {
+ continue;
+ }
+ $receivers['uid:' . $contact['uid']] = $contact['uid'];
+ }
+ }
+
+ ActivityPub::switchContacts($receivers, $actor);
+
+ return $receivers;
+ }
+
+ /**
+ * @brief
+ *
+ * @param $cid
+ * @param integer $uid User ID
+ * @param $url
+ */
+ private static function switchContact($cid, $uid, $url)
+ {
+ $profile = ActivityPub::probeProfile($url);
+ if (empty($profile)) {
+ return;
+ }
+
+ logger('Switch contact ' . $cid . ' (' . $profile['url'] . ') for user ' . $uid . ' from OStatus to ActivityPub');
+
+ $photo = $profile['photo'];
+ unset($profile['photo']);
+ unset($profile['baseurl']);
+
+ $profile['nurl'] = normalise_link($profile['url']);
+ DBA::update('contact', $profile, ['id' => $cid]);
+
+ Contact::updateAvatar($photo, $uid, $cid);
+ }
+
+ /**
+ * @brief
+ *
+ * @param $receivers
+ * @param $actor
+ */
+ private static function switchContacts($receivers, $actor)
+ {
+ if (empty($actor)) {
+ return;
+ }
+
+ foreach ($receivers as $receiver) {
+ $contact = DBA::selectFirst('contact', ['id'], ['uid' => $receiver, 'network' => Protocol::OSTATUS, 'nurl' => normalise_link($actor)]);
+ if (DBA::isResult($contact)) {
+ ActivityPub::switchContact($contact['id'], $receiver, $actor);
+ }
+
+ $contact = DBA::selectFirst('contact', ['id'], ['uid' => $receiver, 'network' => Protocol::OSTATUS, 'alias' => [normalise_link($actor), $actor]]);
+ if (DBA::isResult($contact)) {
+ ActivityPub::switchContact($contact['id'], $receiver, $actor);
+ }
+ }
+ }
+
+ /**
+ * @brief
+ *
+ * @param $object_data
+ * @param array $activity
+ *
+ * @return
+ */
+ private static function addActivityFields($object_data, $activity)
+ {
+ if (!empty($activity['published']) && empty($object_data['published'])) {
+ $object_data['published'] = $activity['published'];
+ }
+
+ if (!empty($activity['updated']) && empty($object_data['updated'])) {
+ $object_data['updated'] = $activity['updated'];
+ }
+
+ if (!empty($activity['inReplyTo']) && empty($object_data['parent-uri'])) {
+ $object_data['parent-uri'] = JsonLD::fetchElement($activity, 'inReplyTo', 'id');
+ }
+
+ if (!empty($activity['instrument'])) {
+ $object_data['service'] = JsonLD::fetchElement($activity, 'instrument', 'name', 'type', 'Service');
+ }
+ return $object_data;
+ }
+
+ /**
+ * @brief
+ *
+ * @param $object_id
+ * @param $object
+ * @param $trust_source
+ *
+ * @return
+ */
+ private static function fetchObject($object_id, $object = [], $trust_source = false)
+ {
+ if (!$trust_source || is_string($object)) {
+ $data = ActivityPub::fetchContent($object_id);
+ if (empty($data)) {
+ logger('Empty content for ' . $object_id . ', check if content is available locally.', LOGGER_DEBUG);
+ $data = $object_id;
+ } else {
+ logger('Fetched content for ' . $object_id, LOGGER_DEBUG);
+ }
+ } else {
+ logger('Using original object for url ' . $object_id, LOGGER_DEBUG);
+ $data = $object;
+ }
+
+ if (is_string($data)) {
+ $item = Item::selectFirst([], ['uri' => $data]);
+ if (!DBA::isResult($item)) {
+ logger('Object with url ' . $data . ' was not found locally.', LOGGER_DEBUG);
+ return false;
+ }
+ logger('Using already stored item for url ' . $object_id, LOGGER_DEBUG);
+ $data = ActivityPub::createNote($item);
+ }
+
+ if (empty($data['type'])) {
+ logger('Empty type', LOGGER_DEBUG);
+ return false;
+ }
+
+ if (in_array($data['type'], ActivityPub::CONTENT_TYPES)) {
+ return ActivityPub::processObject($data);
+ }
+
+ if ($data['type'] == 'Announce') {
+ if (empty($data['object'])) {
+ return false;
+ }
+ return ActivityPub::fetchObject($data['object']);
+ }
+
+ logger('Unhandled object type: ' . $data['type'], LOGGER_DEBUG);
+ }
+
+ /**
+ * @brief
+ *
+ * @param $object
+ *
+ * @return
+ */
+ private static function processObject($object)
+ {
+ if (empty($object['id'])) {
+ return false;
+ }
+
+ $object_data = [];
+ $object_data['object_type'] = $object['type'];
+ $object_data['id'] = $object['id'];
+
+ if (!empty($object['inReplyTo'])) {
+ $object_data['reply-to-id'] = JsonLD::fetchElement($object, 'inReplyTo', 'id');
+ } else {
+ $object_data['reply-to-id'] = $object_data['id'];
+ }
+
+ $object_data['published'] = defaults($object, 'published', null);
+ $object_data['updated'] = defaults($object, 'updated', $object_data['published']);
+
+ if (empty($object_data['published']) && !empty($object_data['updated'])) {
+ $object_data['published'] = $object_data['updated'];
+ }
+
+ $actor = JsonLD::fetchElement($object, 'attributedTo', 'id');
+ if (empty($actor)) {
+ $actor = defaults($object, 'actor', null);
+ }
+
+ $object_data['diaspora:guid'] = defaults($object, 'diaspora:guid', null);
+ $object_data['owner'] = $object_data['author'] = $actor;
+ $object_data['context'] = defaults($object, 'context', null);
+ $object_data['conversation'] = defaults($object, 'conversation', null);
+ $object_data['sensitive'] = defaults($object, 'sensitive', null);
+ $object_data['name'] = defaults($object, 'title', null);
+ $object_data['name'] = defaults($object, 'name', $object_data['name']);
+ $object_data['summary'] = defaults($object, 'summary', null);
+ $object_data['content'] = defaults($object, 'content', null);
+ $object_data['source'] = defaults($object, 'source', null);
+ $object_data['location'] = JsonLD::fetchElement($object, 'location', 'name', 'type', 'Place');
+ $object_data['attachments'] = defaults($object, 'attachment', null);
+ $object_data['tags'] = defaults($object, 'tag', null);
+ $object_data['service'] = JsonLD::fetchElement($object, 'instrument', 'name', 'type', 'Service');
+ $object_data['alternate-url'] = JsonLD::fetchElement($object, 'url', 'href');
+ $object_data['receiver'] = ActivityPub::getReceivers($object, $object_data['owner']);
+
+ // Common object data:
+
+ // Unhandled
+ // @context, type, actor, signature, mediaType, duration, replies, icon
+
+ // Also missing: (Defined in the standard, but currently unused)
+ // audience, preview, endTime, startTime, generator, image
+
+ // Data in Notes:
+
+ // Unhandled
+ // contentMap, announcement_count, announcements, context_id, likes, like_count
+ // inReplyToStatusId, shares, quoteUrl, statusnetConversationId
+
+ // Data in video:
+
+ // To-Do?
+ // category, licence, language, commentsEnabled
+
+ // Unhandled
+ // views, waitTranscoding, state, support, subtitleLanguage
+ // likes, dislikes, shares, comments
+
+ return $object_data;
+ }
+
+ /**
+ * @brief
+ *
+ * @param $url
+ * @param $child
+ */
+ private static function fetchMissingActivity($url, $child)
+ {
+ if (Config::get('system', 'ostatus_full_threads')) {
+ return;
+ }
+
+ $object = ActivityPub::fetchContent($url);
+ if (empty($object)) {
+ logger('Activity ' . $url . ' was not fetchable, aborting.');
+ return;
+ }
+
+ $activity = [];
+ $activity['@context'] = $object['@context'];
+ unset($object['@context']);
+ $activity['id'] = $object['id'];
+ $activity['to'] = defaults($object, 'to', []);
+ $activity['cc'] = defaults($object, 'cc', []);
+ $activity['actor'] = $child['author'];
+ $activity['object'] = $object;
+ $activity['published'] = $object['published'];
+ $activity['type'] = 'Create';
+
+ ActivityPub::processActivity($activity);
+ logger('Activity ' . $url . ' had been fetched and processed.');
+ }
+}
--- /dev/null
+<?php
+/**
+ * @file src/Protocol/ActivityPub/Transmitter.php
+ */
+namespace Friendica\Protocol\ActivityPub;
+
+use Friendica\Database\DBA;
+use Friendica\Core\System;
+use Friendica\BaseObject;
+use Friendica\Util\HTTPSignature;
+use Friendica\Core\Protocol;
+use Friendica\Model\Conversation;
+use Friendica\Model\Contact;
+use Friendica\Model\APContact;
+use Friendica\Model\Item;
+use Friendica\Model\Term;
+use Friendica\Model\User;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Content\Text\BBCode;
+use Friendica\Util\JsonLD;
+use Friendica\Util\LDSignature;
+use Friendica\Protocol\ActivityPub;
+use Friendica\Model\Profile;
+
+/**
+ * @brief ActivityPub Transmitter Protocol class
+ */
+class Transmitter
+{
+ /**
+ * @brief collects the lost of followers of the given owner
+ *
+ * @param array $owner Owner array
+ * @param integer $page Page number
+ *
+ * @return array of owners
+ */
+ public static function getFollowers($owner, $page = null)
+ {
+ $condition = ['rel' => [Contact::FOLLOWER, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'],
+ 'self' => false, 'hidden' => false, 'archive' => false, 'pending' => false];
+ $count = DBA::count('contact', $condition);
+
+ $data = ['@context' => ActivityPub::CONTEXT];
+ $data['id'] = System::baseUrl() . '/followers/' . $owner['nickname'];
+ $data['type'] = 'OrderedCollection';
+ $data['totalItems'] = $count;
+
+ // When we hide our friends we will only show the pure number but don't allow more.
+ $profile = Profile::getByUID($owner['uid']);
+ if (!empty($profile['hide-friends'])) {
+ return $data;
+ }
+
+ if (empty($page)) {
+ $data['first'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=1';
+ } else {
+ $list = [];
+
+ $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]);
+ while ($contact = DBA::fetch($contacts)) {
+ $list[] = $contact['url'];
+ }
+
+ if (!empty($list)) {
+ $data['next'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=' . ($page + 1);
+ }
+
+ $data['partOf'] = System::baseUrl() . '/followers/' . $owner['nickname'];
+
+ $data['orderedItems'] = $list;
+ }
+
+ return $data;
+ }
+
+ /**
+ * @brief Create list of following contacts
+ *
+ * @param array $owner Owner array
+ * @param integer $page Page numbe
+ *
+ * @return array of following contacts
+ */
+ public static function getFollowing($owner, $page = null)
+ {
+ $condition = ['rel' => [Contact::SHARING, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'],
+ 'self' => false, 'hidden' => false, 'archive' => false, 'pending' => false];
+ $count = DBA::count('contact', $condition);
+
+ $data = ['@context' => ActivityPub::CONTEXT];
+ $data['id'] = System::baseUrl() . '/following/' . $owner['nickname'];
+ $data['type'] = 'OrderedCollection';
+ $data['totalItems'] = $count;
+
+ // When we hide our friends we will only show the pure number but don't allow more.
+ $profile = Profile::getByUID($owner['uid']);
+ if (!empty($profile['hide-friends'])) {
+ return $data;
+ }
+
+ if (empty($page)) {
+ $data['first'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=1';
+ } else {
+ $list = [];
+
+ $contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]);
+ while ($contact = DBA::fetch($contacts)) {
+ $list[] = $contact['url'];
+ }
+
+ if (!empty($list)) {
+ $data['next'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=' . ($page + 1);
+ }
+
+ $data['partOf'] = System::baseUrl() . '/following/' . $owner['nickname'];
+
+ $data['orderedItems'] = $list;
+ }
+
+ return $data;
+ }
+
+ /**
+ * @brief Public posts for the given owner
+ *
+ * @param array $owner Owner array
+ * @param integer $page Page numbe
+ *
+ * @return array of posts
+ */
+ public static function getOutbox($owner, $page = null)
+ {
+ $public_contact = Contact::getIdForURL($owner['url'], 0, true);
+
+ $condition = ['uid' => $owner['uid'], 'contact-id' => $owner['id'], 'author-id' => $public_contact,
+ 'wall' => true, 'private' => false, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT],
+ 'deleted' => false, 'visible' => true];
+ $count = DBA::count('item', $condition);
+
+ $data = ['@context' => ActivityPub::CONTEXT];
+ $data['id'] = System::baseUrl() . '/outbox/' . $owner['nickname'];
+ $data['type'] = 'OrderedCollection';
+ $data['totalItems'] = $count;
+
+ if (empty($page)) {
+ $data['first'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=1';
+ } else {
+ $list = [];
+
+ $condition['parent-network'] = Protocol::NATIVE_SUPPORT;
+
+ $items = Item::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
+ while ($item = Item::fetch($items)) {
+ $object = self::createObjectFromItemID($item['id']);
+ unset($object['@context']);
+ $list[] = $object;
+ }
+
+ if (!empty($list)) {
+ $data['next'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1);
+ }
+
+ $data['partOf'] = System::baseUrl() . '/outbox/' . $owner['nickname'];
+
+ $data['orderedItems'] = $list;
+ }
+
+ return $data;
+ }
+
+ /**
+ * Return the ActivityPub profile of the given user
+ *
+ * @param integer $uid User ID
+ * @return profile array
+ */
+ public static function profile($uid)
+ {
+ $condition = ['uid' => $uid, 'blocked' => false, 'account_expired' => false,
+ 'account_removed' => false, 'verified' => true];
+ $fields = ['guid', 'nickname', 'pubkey', 'account-type', 'page-flags'];
+ $user = DBA::selectFirst('user', $fields, $condition);
+ if (!DBA::isResult($user)) {
+ return [];
+ }
+
+ $fields = ['locality', 'region', 'country-name'];
+ $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid, 'is-default' => true]);
+ if (!DBA::isResult($profile)) {
+ return [];
+ }
+
+ $fields = ['name', 'url', 'location', 'about', 'avatar'];
+ $contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
+ if (!DBA::isResult($contact)) {
+ return [];
+ }
+
+ $data = ['@context' => ActivityPub::CONTEXT];
+ $data['id'] = $contact['url'];
+ $data['diaspora:guid'] = $user['guid'];
+ $data['type'] = ActivityPub::ACCOUNT_TYPES[$user['account-type']];
+ $data['following'] = System::baseUrl() . '/following/' . $user['nickname'];
+ $data['followers'] = System::baseUrl() . '/followers/' . $user['nickname'];
+ $data['inbox'] = System::baseUrl() . '/inbox/' . $user['nickname'];
+ $data['outbox'] = System::baseUrl() . '/outbox/' . $user['nickname'];
+ $data['preferredUsername'] = $user['nickname'];
+ $data['name'] = $contact['name'];
+ $data['vcard:hasAddress'] = ['@type' => 'vcard:Home', 'vcard:country-name' => $profile['country-name'],
+ 'vcard:region' => $profile['region'], 'vcard:locality' => $profile['locality']];
+ $data['summary'] = $contact['about'];
+ $data['url'] = $contact['url'];
+ $data['manuallyApprovesFollowers'] = in_array($user['page-flags'], [Contact::PAGE_NORMAL, Contact::PAGE_PRVGROUP]);
+ $data['publicKey'] = ['id' => $contact['url'] . '#main-key',
+ 'owner' => $contact['url'],
+ 'publicKeyPem' => $user['pubkey']];
+ $data['endpoints'] = ['sharedInbox' => System::baseUrl() . '/inbox'];
+ $data['icon'] = ['type' => 'Image',
+ 'url' => $contact['avatar']];
+
+ // tags: https://kitty.town/@inmysocks/100656097926961126.json
+ return $data;
+ }
+
+ /**
+ * @brief Returns an array with permissions of a given item array
+ *
+ * @param array $item
+ *
+ * @return array with permissions
+ */
+ private static function fetchPermissionBlockFromConversation($item)
+ {
+ if (empty($item['thr-parent'])) {
+ return [];
+ }
+
+ $condition = ['item-uri' => $item['thr-parent'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
+ $conversation = DBA::selectFirst('conversation', ['source'], $condition);
+ if (!DBA::isResult($conversation)) {
+ return [];
+ }
+
+ $activity = json_decode($conversation['source'], true);
+
+ $actor = JsonLD::fetchElement($activity, 'actor', 'id');
+ $profile = APContact::getByURL($actor);
+
+ $item_profile = APContact::getByURL($item['author-link']);
+ $exclude[] = $item['author-link'];
+
+ if ($item['gravity'] == GRAVITY_PARENT) {
+ $exclude[] = $item['owner-link'];
+ }
+
+ $permissions['to'][] = $actor;
+
+ foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
+ if (empty($activity[$element])) {
+ continue;
+ }
+ if (is_string($activity[$element])) {
+ $activity[$element] = [$activity[$element]];
+ }
+
+ foreach ($activity[$element] as $receiver) {
+ if ($receiver == $profile['followers'] && !empty($item_profile['followers'])) {
+ $receiver = $item_profile['followers'];
+ }
+ if (!in_array($receiver, $exclude)) {
+ $permissions[$element][] = $receiver;
+ }
+ }
+ }
+ return $permissions;
+ }
+
+ /**
+ * @brief Creates an array of permissions from an item thread
+ *
+ * @param array $item
+ *
+ * @return permission array
+ */
+ public static function createPermissionBlockForItem($item)
+ {
+ $data = ['to' => [], 'cc' => []];
+
+ $data = array_merge($data, self::fetchPermissionBlockFromConversation($item));
+
+ $actor_profile = APContact::getByURL($item['author-link']);
+
+ $terms = Term::tagArrayFromItemId($item['id'], TERM_MENTION);
+
+ $contacts[$item['author-link']] = $item['author-link'];
+
+ if (!$item['private']) {
+ $data['to'][] = ActivityPub::PUBLIC_COLLECTION;
+ if (!empty($actor_profile['followers'])) {
+ $data['cc'][] = $actor_profile['followers'];
+ }
+
+ foreach ($terms as $term) {
+ $profile = APContact::getByURL($term['url'], false);
+ if (!empty($profile) && empty($contacts[$profile['url']])) {
+ $data['cc'][] = $profile['url'];
+ $contacts[$profile['url']] = $profile['url'];
+ }
+ }
+ } else {
+ $receiver_list = Item::enumeratePermissions($item);
+
+ $mentioned = [];
+
+ foreach ($terms as $term) {
+ $cid = Contact::getIdForURL($term['url'], $item['uid']);
+ if (!empty($cid) && in_array($cid, $receiver_list)) {
+ $contact = DBA::selectFirst('contact', ['url'], ['id' => $cid, 'network' => Protocol::ACTIVITYPUB]);
+ $data['to'][] = $contact['url'];
+ $contacts[$contact['url']] = $contact['url'];
+ }
+ }
+
+ foreach ($receiver_list as $receiver) {
+ $contact = DBA::selectFirst('contact', ['url'], ['id' => $receiver, 'network' => Protocol::ACTIVITYPUB]);
+ if (empty($contacts[$contact['url']])) {
+ $data['cc'][] = $contact['url'];
+ $contacts[$contact['url']] = $contact['url'];
+ }
+ }
+ }
+
+ $parents = Item::select(['id', 'author-link', 'owner-link', 'gravity'], ['parent' => $item['parent']]);
+ while ($parent = Item::fetch($parents)) {
+ // Don't include data from future posts
+ if ($parent['id'] >= $item['id']) {
+ continue;
+ }
+
+ $profile = APContact::getByURL($parent['author-link'], false);
+ if (!empty($profile) && empty($contacts[$profile['url']])) {
+ $data['cc'][] = $profile['url'];
+ $contacts[$profile['url']] = $profile['url'];
+ }
+
+ if ($item['gravity'] != GRAVITY_PARENT) {
+ continue;
+ }
+
+ $profile = APContact::getByURL($parent['owner-link'], false);
+ if (!empty($profile) && empty($contacts[$profile['url']])) {
+ $data['cc'][] = $profile['url'];
+ $contacts[$profile['url']] = $profile['url'];
+ }
+ }
+ DBA::close($parents);
+
+ if (empty($data['to'])) {
+ $data['to'] = $data['cc'];
+ $data['cc'] = [];
+ }
+
+ return $data;
+ }
+
+ /**
+ * @brief Fetches a list of inboxes of followers of a given user
+ *
+ * @param integer $uid User ID
+ *
+ * @return array of follower inboxes
+ */
+ public static function fetchTargetInboxesforUser($uid)
+ {
+ $inboxes = [];
+
+ $condition = ['uid' => $uid, 'network' => Protocol::ACTIVITYPUB, 'archive' => false, 'pending' => false];
+
+ if (!empty($uid)) {
+ $condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
+ }
+
+ $contacts = DBA::select('contact', ['notify', 'batch'], $condition);
+ while ($contact = DBA::fetch($contacts)) {
+ $contact = defaults($contact, 'batch', $contact['notify']);
+ $inboxes[$contact] = $contact;
+ }
+ DBA::close($contacts);
+
+ return $inboxes;
+ }
+
+ /**
+ * @brief Fetches an array of inboxes for the given item and user
+ *
+ * @param array $item
+ * @param integer $uid User ID
+ *
+ * @return array with inboxes
+ */
+ public static function fetchTargetInboxes($item, $uid)
+ {
+ $permissions = self::createPermissionBlockForItem($item);
+ if (empty($permissions)) {
+ return [];
+ }
+
+ $inboxes = [];
+
+ if ($item['gravity'] == GRAVITY_ACTIVITY) {
+ $item_profile = APContact::getByURL($item['author-link']);
+ } else {
+ $item_profile = APContact::getByURL($item['owner-link']);
+ }
+
+ foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
+ if (empty($permissions[$element])) {
+ continue;
+ }
+
+ foreach ($permissions[$element] as $receiver) {
+ if ($receiver == $item_profile['followers']) {
+ $inboxes = self::fetchTargetInboxesforUser($uid);
+ } else {
+ $profile = APContact::getByURL($receiver);
+ if (!empty($profile)) {
+ $target = defaults($profile, 'sharedinbox', $profile['inbox']);
+ $inboxes[$target] = $target;
+ }
+ }
+ }
+ }
+
+ return $inboxes;
+ }
+
+ /**
+ * @brief Returns the activity type of a given item
+ *
+ * @param array $item
+ *
+ * @return activity type
+ */
+ public static function getTypeOfItem($item)
+ {
+ if ($item['verb'] == ACTIVITY_POST) {
+ if ($item['created'] == $item['edited']) {
+ $type = 'Create';
+ } else {
+ $type = 'Update';
+ }
+ } elseif ($item['verb'] == ACTIVITY_LIKE) {
+ $type = 'Like';
+ } elseif ($item['verb'] == ACTIVITY_DISLIKE) {
+ $type = 'Dislike';
+ } elseif ($item['verb'] == ACTIVITY_ATTEND) {
+ $type = 'Accept';
+ } elseif ($item['verb'] == ACTIVITY_ATTENDNO) {
+ $type = 'Reject';
+ } elseif ($item['verb'] == ACTIVITY_ATTENDMAYBE) {
+ $type = 'TentativeAccept';
+ } else {
+ $type = '';
+ }
+
+ return $type;
+ }
+
+ /**
+ * @brief Creates an activity array for a given item id
+ *
+ * @param integer $item_id
+ * @param boolean $object_mode Is the activity item is used inside another object?
+ *
+ * @return array of activity
+ */
+ public static function createActivityFromItem($item_id, $object_mode = false)
+ {
+ $item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
+
+ if (!DBA::isResult($item)) {
+ return false;
+ }
+
+ $condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
+ $conversation = DBA::selectFirst('conversation', ['source'], $condition);
+ if (DBA::isResult($conversation)) {
+ $data = json_decode($conversation['source']);
+ if (!empty($data)) {
+ return $data;
+ }
+ }
+
+ $type = self::getTypeOfItem($item);
+
+ if (!$object_mode) {
+ $data = ['@context' => ActivityPub::CONTEXT];
+
+ if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) {
+ $type = 'Undo';
+ } elseif ($item['deleted']) {
+ $type = 'Delete';
+ }
+ } else {
+ $data = [];
+ }
+
+ $data['id'] = $item['uri'] . '#' . $type;
+ $data['type'] = $type;
+ $data['actor'] = $item['author-link'];
+
+ $data['published'] = DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM);
+
+ if ($item["created"] != $item["edited"]) {
+ $data['updated'] = DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM);
+ }
+
+ $data['context'] = self::fetchContextURLForItem($item);
+
+ $data = array_merge($data, self::createPermissionBlockForItem($item));
+
+ if (in_array($data['type'], ['Create', 'Update', 'Announce', 'Delete'])) {
+ $data['object'] = self::createNote($item);
+ } elseif ($data['type'] == 'Undo') {
+ $data['object'] = self::createActivityFromItem($item_id, true);
+ } else {
+ $data['object'] = $item['thr-parent'];
+ }
+
+ $owner = User::getOwnerDataById($item['uid']);
+
+ if (!$object_mode) {
+ return LDSignature::sign($data, $owner);
+ } else {
+ return $data;
+ }
+ }
+
+ /**
+ * @brief Creates an object array for a given item id
+ *
+ * @param integer $item_id
+ *
+ * @return object array
+ */
+ public static function createObjectFromItemID($item_id)
+ {
+ $item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
+
+ if (!DBA::isResult($item)) {
+ return false;
+ }
+
+ $data = ['@context' => ActivityPub::CONTEXT];
+ $data = array_merge($data, self::createNote($item));
+
+ return $data;
+ }
+
+ /**
+ * @brief Returns a tag array for a given item array
+ *
+ * @param array $item
+ *
+ * @return array of tags
+ */
+ private static function createTagList($item)
+ {
+ $tags = [];
+
+ $terms = Term::tagArrayFromItemId($item['id'], TERM_MENTION);
+ foreach ($terms as $term) {
+ $contact = Contact::getDetailsByURL($term['url']);
+ if (!empty($contact['addr'])) {
+ $mention = '@' . $contact['addr'];
+ } else {
+ $mention = '@' . $term['url'];
+ }
+
+ $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
+ }
+ return $tags;
+ }
+
+ /**
+ * @brief Fetches the "context" value for a givem item array from the "conversation" table
+ *
+ * @param array $item
+ *
+ * @return string with context url
+ */
+ private static function fetchContextURLForItem($item)
+ {
+ $conversation = DBA::selectFirst('conversation', ['conversation-href', 'conversation-uri'], ['item-uri' => $item['parent-uri']]);
+ if (DBA::isResult($conversation) && !empty($conversation['conversation-href'])) {
+ $context_uri = $conversation['conversation-href'];
+ } elseif (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
+ $context_uri = $conversation['conversation-uri'];
+ } else {
+ $context_uri = str_replace('/objects/', '/context/', $item['parent-uri']);
+ }
+ return $context_uri;
+ }
+
+ /**
+ * @brief Creates a note/article object array
+ *
+ * @param array $item
+ *
+ * @return object array
+ */
+ private static function createNote($item)
+ {
+ if (!empty($item['title'])) {
+ $type = 'Article';
+ } else {
+ $type = 'Note';
+ }
+
+ if ($item['deleted']) {
+ $type = 'Tombstone';
+ }
+
+ $data = [];
+ $data['id'] = $item['uri'];
+ $data['type'] = $type;
+
+ if ($item['deleted']) {
+ return $data;
+ }
+
+ $data['summary'] = null; // Ignore by now
+
+ if ($item['uri'] != $item['thr-parent']) {
+ $data['inReplyTo'] = $item['thr-parent'];
+ } else {
+ $data['inReplyTo'] = null;
+ }
+
+ $data['diaspora:guid'] = $item['guid'];
+ $data['published'] = DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM);
+
+ if ($item["created"] != $item["edited"]) {
+ $data['updated'] = DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM);
+ }
+
+ $data['url'] = $item['plink'];
+ $data['attributedTo'] = $item['author-link'];
+ $data['actor'] = $item['author-link'];
+ $data['sensitive'] = false; // - Query NSFW
+ $data['context'] = self::fetchContextURLForItem($item);
+
+ if (!empty($item['title'])) {
+ $data['name'] = BBCode::convert($item['title'], false, 7);
+ }
+
+ $data['content'] = BBCode::convert($item['body'], false, 7);
+ $data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
+
+ if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
+ $data['diaspora:comment'] = $item['signed_text'];
+ }
+
+ $data['attachment'] = []; // @ToDo
+ $data['tag'] = self::createTagList($item);
+ $data = array_merge($data, self::createPermissionBlockForItem($item));
+
+ return $data;
+ }
+
+ /**
+ * @brief Transmits a profile deletion to a given inbox
+ *
+ * @param integer $uid User ID
+ * @param string $inbox Target inbox
+ */
+ public static function transmitProfileDeletion($uid, $inbox)
+ {
+ $owner = User::getOwnerDataById($uid);
+ $profile = APContact::getByURL($owner['url']);
+
+ $data = ['@context' => 'https://www.w3.org/ns/activitystreams',
+ 'id' => System::baseUrl() . '/activity/' . System::createGUID(),
+ 'type' => 'Delete',
+ 'actor' => $owner['url'],
+ 'object' => self::profile($uid),
+ 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
+ 'to' => [ActivityPub::PUBLIC_COLLECTION],
+ 'cc' => []];
+
+ $signed = LDSignature::sign($data, $owner);
+
+ logger('Deliver profile deletion for user ' . $uid . ' to ' . $inbox .' via ActivityPub', LOGGER_DEBUG);
+ HTTPSignature::transmit($signed, $inbox, $uid);
+ }
+
+ /**
+ * @brief Transmits a profile change to a given inbox
+ *
+ * @param integer $uid User ID
+ * @param string $inbox Target inbox
+ */
+ public static function transmitProfileUpdate($uid, $inbox)
+ {
+ $owner = User::getOwnerDataById($uid);
+ $profile = APContact::getByURL($owner['url']);
+
+ $data = ['@context' => 'https://www.w3.org/ns/activitystreams',
+ 'id' => System::baseUrl() . '/activity/' . System::createGUID(),
+ 'type' => 'Update',
+ 'actor' => $owner['url'],
+ 'object' => self::profile($uid),
+ 'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
+ 'to' => [$profile['followers']],
+ 'cc' => []];
+
+ $signed = LDSignature::sign($data, $owner);
+
+ logger('Deliver profile update for user ' . $uid . ' to ' . $inbox .' via ActivityPub', LOGGER_DEBUG);
+ HTTPSignature::transmit($signed, $inbox, $uid);
+ }
+
+ /**
+ * @brief Transmits a given activity to a target
+ *
+ * @param array $activity
+ * @param string $target Target profile
+ * @param integer $uid User ID
+ */
+ public static function transmitActivity($activity, $target, $uid)
+ {
+ $profile = APContact::getByURL($target);
+
+ $owner = User::getOwnerDataById($uid);
+
+ $data = ['@context' => 'https://www.w3.org/ns/activitystreams',
+ 'id' => System::baseUrl() . '/activity/' . System::createGUID(),
+ 'type' => $activity,
+ 'actor' => $owner['url'],
+ 'object' => $profile['url'],
+ 'to' => $profile['url']];
+
+ logger('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, LOGGER_DEBUG);
+
+ $signed = LDSignature::sign($data, $owner);
+ HTTPSignature::transmit($signed, $profile['inbox'], $uid);
+ }
+
+ /**
+ * @brief Transmit a message that the contact request had been accepted
+ *
+ * @param string $target Target profile
+ * @param $id
+ * @param integer $uid User ID
+ */
+ public static function transmitContactAccept($target, $id, $uid)
+ {
+ $profile = APContact::getByURL($target);
+
+ $owner = User::getOwnerDataById($uid);
+ $data = ['@context' => 'https://www.w3.org/ns/activitystreams',
+ 'id' => System::baseUrl() . '/activity/' . System::createGUID(),
+ 'type' => 'Accept',
+ 'actor' => $owner['url'],
+ 'object' => ['id' => $id, 'type' => 'Follow',
+ 'actor' => $profile['url'],
+ 'object' => $owner['url']],
+ 'to' => $profile['url']];
+
+ logger('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG);
+
+ $signed = LDSignature::sign($data, $owner);
+ HTTPSignature::transmit($signed, $profile['inbox'], $uid);
+ }
+
+ /**
+ * @brief
+ *
+ * @param string $target Target profile
+ * @param $id
+ * @param integer $uid User ID
+ */
+ public static function transmitContactReject($target, $id, $uid)
+ {
+ $profile = APContact::getByURL($target);
+
+ $owner = User::getOwnerDataById($uid);
+ $data = ['@context' => 'https://www.w3.org/ns/activitystreams',
+ 'id' => System::baseUrl() . '/activity/' . System::createGUID(),
+ 'type' => 'Reject',
+ 'actor' => $owner['url'],
+ 'object' => ['id' => $id, 'type' => 'Follow',
+ 'actor' => $profile['url'],
+ 'object' => $owner['url']],
+ 'to' => $profile['url']];
+
+ logger('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG);
+
+ $signed = LDSignature::sign($data, $owner);
+ HTTPSignature::transmit($signed, $profile['inbox'], $uid);
+ }
+
+ /**
+ * @brief
+ *
+ * @param string $target Target profile
+ * @param integer $uid User ID
+ */
+ public static function transmitContactUndo($target, $uid)
+ {
+ $profile = APContact::getByURL($target);
+
+ $id = System::baseUrl() . '/activity/' . System::createGUID();
+
+ $owner = User::getOwnerDataById($uid);
+ $data = ['@context' => 'https://www.w3.org/ns/activitystreams',
+ 'id' => $id,
+ 'type' => 'Undo',
+ 'actor' => $owner['url'],
+ 'object' => ['id' => $id, 'type' => 'Follow',
+ 'actor' => $owner['url'],
+ 'object' => $profile['url']],
+ 'to' => $profile['url']];
+
+ logger('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG);
+
+ $signed = LDSignature::sign($data, $owner);
+ HTTPSignature::transmit($signed, $profile['inbox'], $uid);
+ }
+}
projects / friendica.git / commitdiff