namespace Friendica\Protocol\ActivityPub;
use Friendica\Database\DBA;
-use Friendica\Util\HTTPSignature;
+use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Model\Contact;
use Friendica\Model\APContact;
+use Friendica\Model\Conversation;
use Friendica\Model\Item;
use Friendica\Model\User;
+use Friendica\Protocol\ActivityPub;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Util\HTTPSignature;
use Friendica\Util\JsonLD;
use Friendica\Util\LDSignature;
-use Friendica\Protocol\ActivityPub;
+use Friendica\Util\Strings;
/**
* @brief ActivityPub Receiver Protocol class
*
* To-Do:
- * - Update (Image, Video, Article, Note)
- * - Event
* - Undo Announce
*
* Check what this is meant to do:
* - Flag
* - Remove
* - Undo Block
- * - Undo Accept (Problem: This could invert a contact accept or an event accept)
- *
- * General:
- * - Possibly using the LD-JSON parser
*/
class Receiver
{
+ const PUBLIC_COLLECTION = 'as:Public';
+ const ACCOUNT_TYPES = ['as:Person', 'as:Organization', 'as:Service', 'as:Group', 'as:Application'];
+ const CONTENT_TYPES = ['as:Note', 'as:Article', 'as:Video', 'as:Image', 'as:Event'];
+ const ACTIVITY_TYPES = ['as:Like', 'as:Dislike', 'as:Accept', 'as:Reject', 'as:TentativeAccept'];
+
/**
* Checks if the web request is done for the AP protocol
*
}
/**
- *
+ * Checks incoming message from the inbox
*
* @param $body
* @param $header
{
$http_signer = HTTPSignature::getSigner($body, $header);
if (empty($http_signer)) {
- logger('Invalid HTTP signature, message will be discarded.', LOGGER_DEBUG);
+ Logger::log('Invalid HTTP signature, message will be discarded.', Logger::DEBUG);
return;
} else {
- logger('HTTP signature is signed by ' . $http_signer, LOGGER_DEBUG);
+ Logger::log('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);
+ Logger::log('Invalid body.', Logger::DEBUG);
return;
}
+ $ldactivity = JsonLD::compact($activity);
+
+ $actor = JsonLD::fetchElement($ldactivity, 'as:actor');
+
+ Logger::log('Message for user ' . $uid . ' is from actor ' . $actor, Logger::DEBUG);
+
if (LDSignature::isSigned($activity)) {
$ld_signer = LDSignature::getSigner($activity);
if (empty($ld_signer)) {
- logger('Invalid JSON-LD signature from ' . $actor, LOGGER_DEBUG);
+ Logger::log('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);
+ Logger::log('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);
+ Logger::log('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);
+ Logger::log('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);
+ Logger::log('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);
+ Logger::log('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);
+ Logger::log('No JSON-LD signature, different actor.', Logger::DEBUG);
$trust_source = false;
}
- self::processActivity($activity, $body, $uid, $trust_source);
+ self::processActivity($ldactivity, $body, $uid, $trust_source);
+ }
+
+ /**
+ * Fetches the object type for a given object id
+ *
+ * @param array $activity
+ * @param string $object_id Object ID of the the provided object
+ * @param integer $uid User ID
+ *
+ * @return string with object type
+ */
+ private static function fetchObjectType($activity, $object_id, $uid = 0)
+ {
+ if (!empty($activity['as:object'])) {
+ $object_type = JsonLD::fetchElement($activity['as:object'], '@type');
+ if (!empty($object_type)) {
+ return $object_type;
+ }
+ }
+
+ if (Item::exists(['uri' => $object_id, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT]])) {
+ // We just assume "note" since it doesn't make a difference for the further processing
+ return 'as:Note';
+ }
+
+ $profile = APContact::getByURL($object_id);
+ if (!empty($profile['type'])) {
+ return 'as:' . $profile['type'];
+ }
+
+ $data = ActivityPub::fetchContent($object_id, $uid);
+ if (!empty($data)) {
+ $object = JsonLD::compact($data);
+ $type = JsonLD::fetchElement($object, '@type');
+ if (!empty($type)) {
+ return $type;
+ }
+ }
+
+ return null;
}
/**
- *
+ * Prepare the object array
*
* @param array $activity
* @param integer $uid User ID
* @param $trust_source
*
- * @return
+ * @return array with object data
*/
private static function prepareObjectData($activity, $uid, &$trust_source)
{
- $actor = JsonLD::fetchElement($activity, 'actor', 'id');
+ $actor = JsonLD::fetchElement($activity, 'as:actor');
if (empty($actor)) {
- logger('Empty actor', LOGGER_DEBUG);
+ Logger::log('Empty actor', Logger::DEBUG);
return [];
}
+ $type = JsonLD::fetchElement($activity, '@type');
+
// Fetch all receivers from to, cc, bto and bcc
$receivers = self::getReceivers($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);
+ } else {
+ // We possibly need some user to fetch private content,
+ // so we fetch the first out ot the list.
+ $uid = self::getFirstUserFromReceivers($receivers);
}
- logger('Receivers: ' . json_encode($receivers), LOGGER_DEBUG);
+ Logger::log('Receivers: ' . $uid . ' - ' . json_encode($receivers), Logger::DEBUG);
- $object_id = JsonLD::fetchElement($activity, 'object', 'id');
+ $object_id = JsonLD::fetchElement($activity, 'as:object');
if (empty($object_id)) {
- logger('No object found', LOGGER_DEBUG);
+ Logger::log('No object found', Logger::DEBUG);
return [];
}
+ $object_type = self::fetchObjectType($activity, $object_id, $uid);
+
// Fetch the content only on activities where this matters
- if (in_array($activity['type'], ['Create', 'Announce'])) {
- $object_data = self::fetchObject($object_id, $activity['object'], $trust_source);
+ if (in_array($type, ['as:Create', 'as:Update', 'as:Announce'])) {
+ if ($type == 'as:Announce') {
+ $trust_source = false;
+ }
+ $object_data = self::fetchObject($object_id, $activity['as:object'], $trust_source, $uid);
if (empty($object_data)) {
- logger("Object data couldn't be processed", LOGGER_DEBUG);
+ Logger::log("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'])) {
+ } elseif (in_array($type, ['as:Like', 'as: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.
$object_data = self::processObject($activity);
- $object_data['name'] = $activity['type'];
- $object_data['author'] = $activity['actor'];
- $object_data['object'] = $object_id;
+ $object_data['name'] = $type;
+ $object_data['author'] = JsonLD::fetchElement($activity, 'as:actor');
+ $object_data['object_id'] = $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');
+ $object_data['id'] = JsonLD::fetchElement($activity, '@id');
+ $object_data['object_id'] = JsonLD::fetchElement($activity, 'as:object');
+ $object_data['object_actor'] = JsonLD::fetchElement($activity['as:object'], 'as:actor');
+ $object_data['object_object'] = JsonLD::fetchElement($activity['as:object'], 'as:object');
+ $object_data['object_type'] = JsonLD::fetchElement($activity['as:object'], '@type');
+
+ // An Undo is done on the object of an object, so we need that type as well
+ if ($type == 'as:Undo') {
+ $object_data['object_object_type'] = self::fetchObjectType([], $object_data['object_object'], $uid);
+ }
}
$object_data = self::addActivityFields($object_data, $activity);
- $object_data['type'] = $activity['type'];
- $object_data['owner'] = $actor;
+ if (empty($object_data['object_type'])) {
+ $object_data['object_type'] = $object_type;
+ }
+
+ $object_data['type'] = $type;
+ $object_data['actor'] = $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);
+ Logger::log('Processing ' . $object_data['type'] . ' ' . $object_data['object_type'] . ' ' . $object_data['id'], Logger::DEBUG);
return $object_data;
}
/**
- *
+ * Fetches the first user id from the receiver array
*
- * @param array $activity
- * @param $body
- * @param integer $uid User ID
- * @param $trust_source
+ * @param array $receivers Array with receivers
+ * @return integer user id;
+ */
+ public static function getFirstUserFromReceivers($receivers)
+ {
+ foreach ($receivers as $receiver) {
+ if (!empty($receiver)) {
+ return $receiver;
+ }
+ }
+ return 0;
+ }
+
+ /**
+ * Store the unprocessed data into the conversation table
+ * This has to be done outside the regular function,
+ * since we store everything - not only item posts.
+ *
+ * @param array $activity Array with activity data
+ * @param string $body The raw message
+ */
+ private static function storeConversation($activity, $body)
+ {
+ if (empty($body) || empty($activity['id'])) {
+ return;
+ }
+
+ $conversation = [
+ 'protocol' => Conversation::PARCEL_ACTIVITYPUB,
+ 'item-uri' => $activity['id'],
+ 'reply-to-uri' => defaults($activity, 'reply-to-id', ''),
+ 'conversation-href' => defaults($activity, 'context', ''),
+ 'conversation-uri' => defaults($activity, 'conversation', ''),
+ 'source' => $body,
+ 'received' => DateTimeFormat::utcNow()];
+
+ DBA::insert('conversation', $conversation, true);
+ }
+
+ /**
+ * Processes the activity object
+ *
+ * @param array $activity Array with activity data
+ * @param string $body
+ * @param integer $uid User ID
+ * @param boolean $trust_source Do we trust the source?
*/
public static function processActivity($activity, $body = '', $uid = null, $trust_source = false)
{
- if (empty($activity['type'])) {
- logger('Empty type', LOGGER_DEBUG);
+ $type = JsonLD::fetchElement($activity, '@type');
+ if (!$type) {
+ Logger::log('Empty type', Logger::DEBUG);
return;
}
- if (empty($activity['object'])) {
- logger('Empty object', LOGGER_DEBUG);
+ if (!JsonLD::fetchElement($activity, 'as:object')) {
+ Logger::log('Empty object', Logger::DEBUG);
return;
}
- if (empty($activity['actor'])) {
- logger('Empty actor', LOGGER_DEBUG);
+ if (!JsonLD::fetchElement($activity, 'as:actor')) {
+ Logger::log('Empty actor', Logger::DEBUG);
return;
}
+ // Don't trust the source if "actor" differs from "attributedTo". The content could be forged.
+ if ($trust_source && ($type == 'as:Create') && is_array($activity['as:object'])) {
+ $actor = JsonLD::fetchElement($activity, 'as:actor');
+ $attributed_to = JsonLD::fetchElement($activity['as:object'], 'as:attributedTo');
+ $trust_source = ($actor == $attributed_to);
+ if (!$trust_source) {
+ Logger::log('Not trusting actor: ' . $actor . '. It differs from attributedTo: ' . $attributed_to, Logger::DEBUG);
+ }
+ }
+
// $trust_source is called by reference and is set to true if the content was retrieved successfully
$object_data = self::prepareObjectData($activity, $uid, $trust_source);
if (empty($object_data)) {
- logger('No object data found', LOGGER_DEBUG);
+ Logger::log('No object data found', Logger::DEBUG);
return;
}
if (!$trust_source) {
- logger('No trust for activity type "' . $activity['type'] . '", so we quit now.', LOGGER_DEBUG);
+ Logger::log('No trust for activity type "' . $type . '", so we quit now.', Logger::DEBUG);
+ return;
+ }
+
+ self::storeConversation($object_data, $body);
+
+ // Internal flag for thread completion. See Processor.php
+ if (!empty($activity['thread-completion'])) {
+ $object_data['thread-completion'] = $activity['thread-completion'];
}
- switch ($activity['type']) {
- case 'Create':
- case 'Announce':
- ActivityPub\Processor::createItem($object_data, $body);
+ switch ($type) {
+ case 'as:Create':
+ case 'as:Announce':
+ if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::createItem($object_data);
+ }
+ break;
+
+ case 'as:Like':
+ if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::createActivity($object_data, ACTIVITY_LIKE);
+ }
break;
- case 'Like':
- ActivityPub\Processor::likeItem($object_data, $body);
+ case 'as:Dislike':
+ if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::createActivity($object_data, ACTIVITY_DISLIKE);
+ }
break;
- case 'Dislike':
- ActivityPub\Processor::dislikeItem($object_data, $body);
+ case 'as:TentativeAccept':
+ if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::createActivity($object_data, ACTIVITY_ATTENDMAYBE);
+ }
break;
- case 'Update':
- if (in_array($object_data['object_type'], ActivityPub::CONTENT_TYPES)) {
- /// @todo
- } elseif (in_array($object_data['object_type'], ActivityPub::ACCOUNT_TYPES)) {
+ case 'as:Update':
+ if (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::updateItem($object_data);
+ } elseif (in_array($object_data['object_type'], self::ACCOUNT_TYPES)) {
ActivityPub\Processor::updatePerson($object_data, $body);
}
break;
- case 'Delete':
- if ($object_data['object_type'] == 'Tombstone') {
+ case 'as:Delete':
+ if ($object_data['object_type'] == 'as:Tombstone') {
ActivityPub\Processor::deleteItem($object_data, $body);
- } elseif (in_array($object_data['object_type'], ActivityPub::ACCOUNT_TYPES)) {
+ } elseif (in_array($object_data['object_type'], self::ACCOUNT_TYPES)) {
ActivityPub\Processor::deletePerson($object_data, $body);
}
break;
- case 'Follow':
- ActivityPub\Processor::followUser($object_data);
+ case 'as:Follow':
+ if (in_array($object_data['object_type'], self::ACCOUNT_TYPES)) {
+ ActivityPub\Processor::followUser($object_data);
+ }
break;
- case 'Accept':
- if ($object_data['object_type'] == 'Follow') {
+ case 'as:Accept':
+ if ($object_data['object_type'] == 'as:Follow') {
ActivityPub\Processor::acceptFollowUser($object_data);
+ } elseif (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::createActivity($object_data, ACTIVITY_ATTEND);
}
break;
- case 'Reject':
- if ($object_data['object_type'] == 'Follow') {
+ case 'as:Reject':
+ if ($object_data['object_type'] == 'as:Follow') {
ActivityPub\Processor::rejectFollowUser($object_data);
+ } elseif (in_array($object_data['object_type'], self::CONTENT_TYPES)) {
+ ActivityPub\Processor::createActivity($object_data, ACTIVITY_ATTENDNO);
}
break;
- case 'Undo':
- if ($object_data['object_type'] == 'Follow') {
+ case 'as:Undo':
+ if (($object_data['object_type'] == 'as:Follow') &&
+ in_array($object_data['object_object_type'], self::ACCOUNT_TYPES)) {
ActivityPub\Processor::undoFollowUser($object_data);
- } elseif (in_array($object_data['object_type'], ActivityPub::ACTIVITY_TYPES)) {
+ } elseif (($object_data['object_type'] == 'as:Accept') &&
+ in_array($object_data['object_object_type'], self::ACCOUNT_TYPES)) {
+ ActivityPub\Processor::rejectFollowUser($object_data);
+ } elseif (in_array($object_data['object_type'], self::ACTIVITY_TYPES) &&
+ in_array($object_data['object_object_type'], self::CONTENT_TYPES)) {
ActivityPub\Processor::undoActivity($object_data);
}
break;
default:
- logger('Unknown activity: ' . $activity['type'], LOGGER_DEBUG);
+ Logger::log('Unknown activity: ' . $type . ' ' . $object_data['object_type'], Logger::DEBUG);
break;
}
}
/**
- *
+ * Fetch the receiver list from an activity array
*
* @param array $activity
- * @param $actor
+ * @param string $actor
+ * @param array $tags
*
- * @return
+ * @return array with receivers (user id)
*/
- private static function getReceivers($activity, $actor)
+ private static function getReceivers($activity, $actor, $tags = [])
{
$receivers = [];
// When it is an answer, we inherite the receivers from the parent
- $replyto = JsonLD::fetchElement($activity, 'inReplyTo', 'id');
+ $replyto = JsonLD::fetchElement($activity, 'as:inReplyTo');
if (!empty($replyto)) {
$parents = Item::select(['uid'], ['uri' => $replyto]);
while ($parent = Item::fetch($parents)) {
$profile = APContact::getByURL($actor);
$followers = defaults($profile, 'followers', '');
- logger('Actor: ' . $actor . ' - Followers: ' . $followers, LOGGER_DEBUG);
+ Logger::log('Actor: ' . $actor . ' - Followers: ' . $followers, Logger::DEBUG);
} else {
- logger('Empty actor', LOGGER_DEBUG);
+ Logger::log('Empty actor', Logger::DEBUG);
$followers = '';
}
- foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
- if (empty($activity[$element])) {
+ foreach (['as:to', 'as:cc', 'as:bto', 'as:bcc'] as $element) {
+ $receiver_list = JsonLD::fetchElementArray($activity, $element);
+ if (empty($receiver_list)) {
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) {
+ foreach ($receiver_list as $receiver) {
+ if ($receiver == self::PUBLIC_COLLECTION) {
$receivers['uid:0'] = 0;
}
- if (($receiver == ActivityPub::PUBLIC_COLLECTION) && !empty($actor)) {
+ if (($receiver == self::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]
+ $condition = ['alias' => [$actor, Strings::normaliseLink($actor)], 'rel' => [Contact::SHARING, Contact::FRIEND]
, 'archive' => false, 'pending' => false];
$contacts = DBA::select('contact', ['uid'], $condition);
while ($contact = DBA::fetch($contacts)) {
DBA::close($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);
+ if (in_array($receiver, [$followers, self::PUBLIC_COLLECTION]) && !empty($actor)) {
+ $receivers = array_merge($receivers, self::getReceiverForActor($actor, $tags));
continue;
}
- $condition = ['self' => true, 'nurl' => normalise_link($receiver)];
- $contact = DBA::selectFirst('contact', ['uid'], $condition);
+ // Fetching all directly addressed receivers
+ $condition = ['self' => true, 'nurl' => Strings::normaliseLink($receiver)];
+ $contact = DBA::selectFirst('contact', ['uid', 'contact-type'], $condition);
if (!DBA::isResult($contact)) {
continue;
}
+
+ // Check if the potential receiver is following the actor
+ // Exception: The receiver is targetted via "to" or this is a comment
+ if ((($element != 'as:to') && empty($replyto)) || ($contact['contact-type'] == Contact::ACCOUNT_TYPE_COMMUNITY)) {
+ $networks = [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS];
+ $condition = ['nurl' => Strings::normaliseLink($actor), 'rel' => [Contact::SHARING, Contact::FRIEND],
+ 'network' => $networks, 'archive' => false, 'pending' => false, 'uid' => $contact['uid']];
+
+ // Forum posts are only accepted from forum contacts
+ if ($contact['contact-type'] == Contact::ACCOUNT_TYPE_COMMUNITY) {
+ $condition['rel'] = [Contact::SHARING, Contact::FRIEND, Contact::FOLLOWER];
+ }
+
+ if (!DBA::exists('contact', $condition)) {
+ continue;
+ }
+ }
+
$receivers['uid:' . $contact['uid']] = $contact['uid'];
}
}
return $receivers;
}
+ /**
+ * Fetch the receiver list of a given actor
+ *
+ * @param string $actor
+ * @param array $tags
+ *
+ * @return array with receivers (user id)
+ */
+ public static function getReceiverForActor($actor, $tags)
+ {
+ $receivers = [];
+ $networks = [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS];
+ $condition = ['nurl' => Strings::normaliseLink($actor), 'rel' => [Contact::SHARING, Contact::FRIEND, Contact::FOLLOWER],
+ 'network' => $networks, 'archive' => false, 'pending' => false];
+ $contacts = DBA::select('contact', ['uid', 'rel'], $condition);
+ while ($contact = DBA::fetch($contacts)) {
+ if (self::isValidReceiverForActor($contact, $actor, $tags)) {
+ $receivers['uid:' . $contact['uid']] = $contact['uid'];
+ }
+ }
+ DBA::close($contacts);
+ return $receivers;
+ }
+
+ /**
+ * Tests if the contact is a valid receiver for this actor
+ *
+ * @param array $contact
+ * @param string $actor
+ * @param array $tags
+ *
+ * @return array with receivers (user id)
+ */
+ private static function isValidReceiverForActor($contact, $actor, $tags)
+ {
+ // Public contacts are no valid receiver
+ if ($contact['uid'] == 0) {
+ return false;
+ }
+
+ // Are we following the contact? Then this is a valid receiver
+ if (in_array($contact['rel'], [Contact::SHARING, Contact::FRIEND])) {
+ return true;
+ }
+
+ // When the possible receiver isn't a community, then it is no valid receiver
+ $owner = User::getOwnerDataById($contact['uid']);
+ if (empty($owner) || ($owner['contact-type'] != Contact::ACCOUNT_TYPE_COMMUNITY)) {
+ return false;
+ }
+
+ // Is the community account tagged?
+ foreach ($tags as $tag) {
+ if ($tag['type'] != 'Mention') {
+ continue;
+ }
+
+ if ($tag['href'] == $owner['url']) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
/**
* Switches existing contacts to ActivityPub
*
* @param integer $uid User ID
* @param string $url Profile URL
*/
- private static function switchContact($cid, $uid, $url)
+ public static function switchContact($cid, $uid, $url)
{
$profile = ActivityPub::probeProfile($url);
if (empty($profile)) {
return;
}
- logger('Switch contact ' . $cid . ' (' . $profile['url'] . ') for user ' . $uid . ' to ActivityPub');
+ Logger::log('Switch contact ' . $cid . ' (' . $profile['url'] . ') for user ' . $uid . ' to ActivityPub');
- $photo = $profile['photo'];
+ $photo = defaults($profile, 'photo', null);
unset($profile['photo']);
unset($profile['baseurl']);
+ unset($profile['guid']);
- $profile['nurl'] = normalise_link($profile['url']);
+ $profile['nurl'] = Strings::normaliseLink($profile['url']);
DBA::update('contact', $profile, ['id' => $cid]);
Contact::updateAvatar($photo, $uid, $cid);
// Send a new follow request to be sure that the connection still exists
if (($uid != 0) && DBA::exists('contact', ['id' => $cid, 'rel' => [Contact::SHARING, Contact::FRIEND]])) {
ActivityPub\Transmitter::sendActivity('Follow', $profile['url'], $uid);
- logger('Send a new follow request to ' . $profile['url'] . ' for user ' . $uid, LOGGER_DEBUG);
+ Logger::log('Send a new follow request to ' . $profile['url'] . ' for user ' . $uid, Logger::DEBUG);
}
}
/**
- *
+ *
*
* @param $receivers
* @param $actor
}
foreach ($receivers as $receiver) {
- $contact = DBA::selectFirst('contact', ['id'], ['uid' => $receiver, 'network' => Protocol::OSTATUS, 'nurl' => normalise_link($actor)]);
+ $contact = DBA::selectFirst('contact', ['id'], ['uid' => $receiver, 'network' => Protocol::OSTATUS, 'nurl' => Strings::normaliseLink($actor)]);
if (DBA::isResult($contact)) {
self::switchContact($contact['id'], $receiver, $actor);
}
- $contact = DBA::selectFirst('contact', ['id'], ['uid' => $receiver, 'network' => Protocol::OSTATUS, 'alias' => [normalise_link($actor), $actor]]);
+ $contact = DBA::selectFirst('contact', ['id'], ['uid' => $receiver, 'network' => Protocol::OSTATUS, 'alias' => [Strings::normaliseLink($actor), $actor]]);
if (DBA::isResult($contact)) {
self::switchContact($contact['id'], $receiver, $actor);
}
}
/**
- *
+ *
*
* @param $object_data
* @param array $activity
*
- * @return
+ * @return
*/
private static function addActivityFields($object_data, $activity)
{
if (!empty($activity['published']) && empty($object_data['published'])) {
- $object_data['published'] = $activity['published'];
+ $object_data['published'] = JsonLD::fetchElement($activity, 'as:published', '@value');
}
- if (!empty($activity['updated']) && empty($object_data['updated'])) {
- $object_data['updated'] = $activity['updated'];
+ if (!empty($activity['diaspora:guid']) && empty($object_data['diaspora:guid'])) {
+ $object_data['diaspora:guid'] = JsonLD::fetchElement($activity, 'diaspora:guid');
}
- if (!empty($activity['inReplyTo']) && empty($object_data['parent-uri'])) {
- $object_data['parent-uri'] = JsonLD::fetchElement($activity, 'inReplyTo', 'id');
- }
+ $object_data['service'] = JsonLD::fetchElement($activity, 'as:instrument', 'as:name', '@type', 'as:Service');
- if (!empty($activity['instrument'])) {
- $object_data['service'] = JsonLD::fetchElement($activity, 'instrument', 'name', 'type', 'Service');
- }
return $object_data;
}
/**
- *
+ * Fetches the object data from external ressources if needed
*
- * @param $object_id
- * @param $object
- * @param $trust_source
+ * @param string $object_id Object ID of the the provided object
+ * @param array $object The provided object array
+ * @param boolean $trust_source Do we trust the provided object?
+ * @param integer $uid User ID for the signature that we use to fetch data
*
- * @return
+ * @return array with trusted and valid object data
*/
- private static function fetchObject($object_id, $object = [], $trust_source = false)
+ private static function fetchObject($object_id, $object = [], $trust_source = false, $uid = 0)
{
- if (!$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;
+ // By fetching the type we check if the object is complete.
+ $type = JsonLD::fetchElement($object, '@type');
+
+ if (!$trust_source || empty($type)) {
+ $data = ActivityPub::fetchContent($object_id, $uid);
+ if (!empty($data)) {
+ $object = JsonLD::compact($data);
+ Logger::log('Fetched content for ' . $object_id, Logger::DEBUG);
} else {
- logger('Fetched content for ' . $object_id, LOGGER_DEBUG);
+ Logger::log('Empty content for ' . $object_id . ', check if content is available locally.', Logger::DEBUG);
+
+ $item = Item::selectFirst([], ['uri' => $object_id]);
+ if (!DBA::isResult($item)) {
+ Logger::log('Object with url ' . $object_id . ' was not found locally.', Logger::DEBUG);
+ return false;
+ }
+ Logger::log('Using already stored item for url ' . $object_id, Logger::DEBUG);
+ $data = ActivityPub\Transmitter::createNote($item);
+ $object = JsonLD::compact($data);
}
} else {
- logger('Using original object for url ' . $object_id, LOGGER_DEBUG);
- $data = $object;
+ Logger::log('Using original object for url ' . $object_id, Logger::DEBUG);
}
- if (is_string($data)) {
- $item = Item::selectFirst([], ['uri' => $data]);
- if (!DBA::isResult($item)) {
- logger('Object with url ' . $data . ' was not found locally.', LOGGER_DEBUG);
+ $type = JsonLD::fetchElement($object, '@type');
+
+ if (empty($type)) {
+ Logger::log('Empty type', Logger::DEBUG);
+ return false;
+ }
+
+ if (in_array($type, self::CONTENT_TYPES)) {
+ return self::processObject($object);
+ }
+
+ if ($type == 'as:Announce') {
+ $object_id = JsonLD::fetchElement($object, 'object');
+ if (empty($object_id)) {
return false;
}
- logger('Using already stored item for url ' . $object_id, LOGGER_DEBUG);
- $data = ActivityPub\Transmitter::createNote($item);
+ return self::fetchObject($object_id, [], false, $uid);
}
- if (empty($data['type'])) {
- logger('Empty type', LOGGER_DEBUG);
- return false;
+ Logger::log('Unhandled object type: ' . $type, Logger::DEBUG);
+ }
+
+ /**
+ * Convert tags from JSON-LD format into a simplified format
+ *
+ * @param array $tags Tags in JSON-LD format
+ *
+ * @return array with tags in a simplified format
+ */
+ private static function processTags($tags)
+ {
+ $taglist = [];
+
+ if (empty($tags)) {
+ return [];
+ }
+
+ foreach ($tags as $tag) {
+ if (empty($tag)) {
+ continue;
+ }
+
+ $element = ['type' => str_replace('as:', '', JsonLD::fetchElement($tag, '@type')),
+ 'href' => JsonLD::fetchElement($tag, 'as:href'),
+ 'name' => JsonLD::fetchElement($tag, 'as:name')];
+
+ if (empty($element['type'])) {
+ continue;
+ }
+
+ $taglist[] = $element;
}
+ return $taglist;
+ }
+
+ /**
+ * Convert emojis from JSON-LD format into a simplified format
+ *
+ * @param array $tags Tags in JSON-LD format
+ *
+ * @return array with emojis in a simplified format
+ */
+ private static function processEmojis($emojis)
+ {
+ $emojilist = [];
- if (in_array($data['type'], ActivityPub::CONTENT_TYPES)) {
- return self::processObject($data);
+ if (empty($emojis)) {
+ return [];
}
- if ($data['type'] == 'Announce') {
- if (empty($data['object'])) {
- return false;
+ foreach ($emojis as $emoji) {
+ if (empty($emoji) || (JsonLD::fetchElement($emoji, '@type') != 'toot:Emoji') || empty($emoji['as:icon'])) {
+ continue;
}
- return self::fetchObject($data['object']);
+
+ $url = JsonLD::fetchElement($emoji['as:icon'], 'as:url');
+ $element = ['name' => JsonLD::fetchElement($emoji, 'as:name'),
+ 'href' => $url];
+
+ $emojilist[] = $element;
+ }
+ return $emojilist;
+ }
+
+ /**
+ * Convert attachments from JSON-LD format into a simplified format
+ *
+ * @param array $attachments Attachments in JSON-LD format
+ *
+ * @return array with attachmants in a simplified format
+ */
+ private static function processAttachments($attachments)
+ {
+ $attachlist = [];
+
+ if (empty($attachments)) {
+ return [];
}
- logger('Unhandled object type: ' . $data['type'], LOGGER_DEBUG);
+ foreach ($attachments as $attachment) {
+ if (empty($attachment)) {
+ continue;
+ }
+
+ $attachlist[] = ['type' => str_replace('as:', '', JsonLD::fetchElement($attachment, '@type')),
+ 'mediaType' => JsonLD::fetchElement($attachment, 'as:mediaType'),
+ 'name' => JsonLD::fetchElement($attachment, 'as:name'),
+ 'url' => JsonLD::fetchElement($attachment, 'as:url')];
+ }
+ return $attachlist;
}
/**
- *
+ * Fetches data from the object part of an activity
*
- * @param $object
+ * @param array $object
*
- * @return
+ * @return array
*/
private static function processObject($object)
{
- if (empty($object['id'])) {
+ if (!JsonLD::fetchElement($object, '@id')) {
return false;
}
$object_data = [];
- $object_data['object_type'] = $object['type'];
- $object_data['id'] = $object['id'];
+ $object_data['object_type'] = JsonLD::fetchElement($object, '@type');
+ $object_data['id'] = JsonLD::fetchElement($object, '@id');
- if (!empty($object['inReplyTo'])) {
- $object_data['reply-to-id'] = JsonLD::fetchElement($object, 'inReplyTo', 'id');
- } else {
+ $object_data['reply-to-id'] = JsonLD::fetchElement($object, 'as:inReplyTo');
+
+ if (empty($object_data['reply-to-id'])) {
$object_data['reply-to-id'] = $object_data['id'];
}
- $object_data['published'] = defaults($object, 'published', null);
- $object_data['updated'] = defaults($object, 'updated', $object_data['published']);
+ $object_data['published'] = JsonLD::fetchElement($object, 'as:published', '@value');
+ $object_data['updated'] = JsonLD::fetchElement($object, 'as:updated', '@value');
+
+ if (empty($object_data['updated'])) {
+ $object_data['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');
+ $actor = JsonLD::fetchElement($object, 'as:attributedTo');
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');
- $object_data['receiver'] = self::getReceivers($object, $object_data['owner']);
+ $actor = JsonLD::fetchElement($object, 'as:actor');
+ }
+
+ $object_data['diaspora:guid'] = JsonLD::fetchElement($object, 'diaspora:guid');
+ $object_data['diaspora:comment'] = JsonLD::fetchElement($object, 'diaspora:comment');
+ $object_data['diaspora:like'] = JsonLD::fetchElement($object, 'diaspora:like');
+ $object_data['actor'] = $object_data['author'] = $actor;
+ $object_data['context'] = JsonLD::fetchElement($object, 'as:context');
+ $object_data['conversation'] = JsonLD::fetchElement($object, 'ostatus:conversation');
+ $object_data['sensitive'] = JsonLD::fetchElement($object, 'as:sensitive');
+ $object_data['name'] = JsonLD::fetchElement($object, 'as:name');
+ $object_data['summary'] = JsonLD::fetchElement($object, 'as:summary');
+ $object_data['content'] = JsonLD::fetchElement($object, 'as:content');
+ $object_data['source'] = JsonLD::fetchElement($object, 'as:source', 'as:content', 'as:mediaType', 'text/bbcode');
+ $object_data['start-time'] = JsonLD::fetchElement($object, 'as:startTime', '@value');
+ $object_data['end-time'] = JsonLD::fetchElement($object, 'as:endTime', '@value');
+ $object_data['location'] = JsonLD::fetchElement($object, 'as:location', 'as:name', '@type', 'as:Place');
+ $object_data['latitude'] = JsonLD::fetchElement($object, 'as:location', 'as:latitude', '@type', 'as:Place');
+ $object_data['latitude'] = JsonLD::fetchElement($object_data, 'latitude', '@value');
+ $object_data['longitude'] = JsonLD::fetchElement($object, 'as:location', 'as:longitude', '@type', 'as:Place');
+ $object_data['longitude'] = JsonLD::fetchElement($object_data, 'longitude', '@value');
+ $object_data['attachments'] = self::processAttachments(JsonLD::fetchElementArray($object, 'as:attachment'));
+ $object_data['tags'] = self::processTags(JsonLD::fetchElementArray($object, 'as:tag'));
+ $object_data['emojis'] = self::processEmojis(JsonLD::fetchElementArray($object, 'as:tag', 'toot:Emoji'));
+ $object_data['generator'] = JsonLD::fetchElement($object, 'as:generator', 'as:name', '@type', 'as:Application');
+ $object_data['alternate-url'] = JsonLD::fetchElement($object, 'as:url');
+
+ // Special treatment for Hubzilla links
+ if (is_array($object_data['alternate-url'])) {
+ $object_data['alternate-url'] = JsonLD::fetchElement($object_data['alternate-url'], 'as:href');
+
+ if (!is_string($object_data['alternate-url'])) {
+ $object_data['alternate-url'] = JsonLD::fetchElement($object['as:url'], 'as:href');
+ }
+ }
+
+ $object_data['receiver'] = self::getReceivers($object, $object_data['actor'], $object_data['tags']);
// Common object data:
// @context, type, actor, signature, mediaType, duration, replies, icon
// Also missing: (Defined in the standard, but currently unused)
- // audience, preview, endTime, startTime, generator, image
+ // audience, preview, endTime, startTime, image
// Data in Notes:
projects / friendica.git / blobdiff