/**
* Fetches the object type for a given object id
*
- * @param array $activity
- * @param string $object_id Object ID of the the provided object
+ * @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, $object_id)
+ private static function fetchObjectType($activity, $object_id, $uid = 0)
{
if (!empty($activity['as:object'])) {
$object_type = JsonLD::fetchElement($activity['as:object'], '@type');
return 'as:' . $profile['type'];
}
- $data = ActivityPub::fetchContent($object_id);
+ $data = ActivityPub::fetchContent($object_id, $uid);
if (!empty($data)) {
$object = JsonLD::compact($data);
$type = JsonLD::fetchElement($object, '@type');
// 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::log('Receivers: ' . json_encode($receivers), Logger::DEBUG);
+ Logger::log('Receivers: ' . $uid . ' - ' . json_encode($receivers), Logger::DEBUG);
$object_id = JsonLD::fetchElement($activity, 'as:object');
if (empty($object_id)) {
return [];
}
- $object_type = self::fetchObjectType($activity, $object_id);
+ $object_type = self::fetchObjectType($activity, $object_id, $uid);
// Fetch the content only on activities where this matters
if (in_array($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);
+ $object_data = self::fetchObject($object_id, $activity['as:object'], $trust_source, $uid);
if (empty($object_data)) {
Logger::log("Object data couldn't be processed", Logger::DEBUG);
return [];
// 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']);
+ $object_data['object_object_type'] = self::fetchObjectType([], $object_data['object_object'], $uid);
}
}
return $object_data;
}
+ /**
+ * Fetches the first uider id from the receiver array
+ *
+ * @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,
*
* @param array $activity
* @param string $actor
+ * @param array $tags
*
* @return array with receivers (user id)
*/
- private static function getReceivers($activity, $actor)
+ private static function getReceivers($activity, $actor, $tags = [])
{
$receivers = [];
}
if (in_array($receiver, [$followers, self::PUBLIC_COLLECTION]) && !empty($actor)) {
- $networks = [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS];
- $condition = ['nurl' => normalise_link($actor), 'rel' => [Contact::SHARING, Contact::FRIEND],
- 'network' => $networks, '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);
+ $receivers = array_merge($receivers, self::getReceiverForActor($actor, $tags));
continue;
}
+ // Fetching all directly addressed receivers
$condition = ['self' => true, 'nurl' => normalise_link($receiver)];
- $contact = DBA::selectFirst('contact', ['uid'], $condition);
+ $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];
+ $condition = ['nurl' => normalise_link($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];
+ $condition = ['nurl' => normalise_link($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 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 $uid User ID for the signature that we use to fetch data
*
* @return array with trusted and valid object data
*/
- private static function fetchObject($object_id, $object = [], $trust_source = false)
+ private static function fetchObject($object_id, $object = [], $trust_source = false, $uid = 0)
{
// 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);
+ $data = ActivityPub::fetchContent($object_id, $uid);
if (!empty($data)) {
$object = JsonLD::compact($data);
Logger::log('Fetched content for ' . $object_id, Logger::DEBUG);
if (empty($object_id)) {
return false;
}
- return self::fetchObject($object_id);
+ return self::fetchObject($object_id, [], false, $uid);
}
Logger::log('Unhandled object type: ' . $type, Logger::DEBUG);
}
}
- $object_data['receiver'] = self::getReceivers($object, $object_data['actor']);
+ $object_data['receiver'] = self::getReceivers($object, $object_data['actor'], $object_data['tags']);
// Common object data:
$key = $key($sig_block['keyId']);
}
- Logger::log('Got keyID ' . $sig_block['keyId']);
+ Logger::log('Got keyID ' . $sig_block['keyId'], Logger::DEBUG);
if (!$key) {
return $result;
$postResult = Network::post($target, $content, $headers);
$return_code = $postResult->getReturnCode();
- Logger::log('Transmit to ' . $target . ' returned ' . $return_code);
+ Logger::log('Transmit to ' . $target . ' returned ' . $return_code, Logger::DEBUG);
return ($return_code >= 200) && ($return_code <= 299);
}
+ /**
+ * @brief Fetches JSON data for a user
+ *
+ * @param string $request request url
+ * @param integer $uid User id of the requester
+ *
+ * @return array JSON array
+ */
+ public static function fetch($request, $uid)
+ {
+ $owner = User::getOwnerDataById($uid);
+
+ if (!$owner) {
+ return;
+ }
+
+ // Header data that is about to be signed.
+ $host = parse_url($request, PHP_URL_HOST);
+ $path = parse_url($request, PHP_URL_PATH);
+
+ $headers = ['Host: ' . $host];
+
+ $signed_data = "(request-target): get " . $path . "\nhost: " . $host;
+
+ $signature = base64_encode(Crypto::rsaSign($signed_data, $owner['uprvkey'], 'sha256'));
+
+ $headers[] = 'Signature: keyId="' . $owner['url'] . '#main-key' . '",algorithm="rsa-sha256",headers="(request-target) host",signature="' . $signature . '"';
+
+ $headers[] = 'Accept: application/activity+json, application/ld+json';
+
+ $curlResult = Network::curl($request, false, $redirects, ['header' => $headers]);
+ $return_code = $curlResult->getReturnCode();
+
+ Logger::log('Fetched for user ' . $uid . ' from ' . $request . ' returned ' . $return_code, Logger::DEBUG);
+
+ if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
+ return false;
+ }
+
+ $content = json_decode($curlResult->getBody(), true);
+
+ if (empty($content) || !is_array($content)) {
+ return false;
+ }
+
+ return $content;
+ }
+
/**
* @brief Gets a signer from a given HTTP request
*
projects / friendica.git / commitdiff