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Code Issues Projects Releases Packages Wiki Activity Actions

Improved relay post processing

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This commit is contained in:
Michael 2023-11-09 06:43:03 +00:00
parent a1b5ec94fb
commit 5afa4fa838
8 changed files with 153 additions and 100 deletions
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17
src/Protocol/ActivityPub.php
View file

@ -105,19 +105,6 @@ class ActivityPub
return $isrequest;
}
/**
* Fetches ActivityPub content from the given url
*
* @param string $url content url
* @param integer $uid User ID for the signature
* @return array
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function fetchContent(string $url, int $uid = 0): array
{
return HTTPSignature::fetch($url, $uid);
}
private static function getAccountType(array $apcontact): int
{
$accounttype = -1;
@ -216,7 +203,7 @@ class ActivityPub
*/
public static function fetchOutbox(string $url, int $uid)
{
$data = self::fetchContent($url, $uid);
$data = HTTPSignature::fetch($url, $uid);
if (empty($data)) {
return;
}
@ -255,7 +242,7 @@ class ActivityPub
return [];
}
$data = self::fetchContent($url, $uid);
$data = HTTPSignature::fetch($url, $uid);
if (empty($data)) {
return [];
}

118
src/Protocol/ActivityPub/Processor.php
View file

@ -596,16 +596,16 @@ class Processor
*/
public static function isActivityGone(string $url): bool
{
if (Network::isUrlBlocked($url)) {
return true;
}
try {
$curlResult = HTTPSignature::fetchRaw($url, 0);
} catch (\Exception $exception) {
Logger::notice('Error fetching url', ['url' => $url, 'exception' => $exception]);
return true;
}
if (Network::isUrlBlocked($url)) {
return true;
}
}
// @todo To ensure that the remote system is working correctly, we can check if the "Content-Type" contains JSON
if (in_array($curlResult->getReturnCode(), [401, 404])) {
@ -1493,7 +1493,7 @@ class Processor
return $object;
}
$object = ActivityPub::fetchContent($url, $uid);
$object = HTTPSignature::fetch($url, $uid);
if (empty($object)) {
Logger::notice('Activity was not fetchable, aborting.', ['url' => $url, 'uid' => $uid]);
// We perform negative caching.
@ -1520,14 +1520,43 @@ class Processor
* @param string $relay_actor Relay actor
* @param int $completion Completion mode, see Receiver::COMPLETION_*
* @param int $uid User id that is used to fetch the activity
* @return string fetched message URL
* @return string fetched message URL. An empty string indicates a temporary error, null indicates a permament error,
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function fetchMissingActivity(string $url, array $child = [], string $relay_actor = '', int $completion = Receiver::COMPLETION_MANUAL, int $uid = 0): string
public static function fetchMissingActivity(string $url, array $child = [], string $relay_actor = '', int $completion = Receiver::COMPLETION_MANUAL, int $uid = 0): ?string
{
$object = self::fetchCachedActivity($url, $uid);
if (empty($object)) {
if (Network::isUrlBlocked($url)) {
return null;
}
try {
$curlResult = HTTPSignature::fetchRaw($url, $uid);
} catch (\Exception $exception) {
Logger::notice('Error fetching url', ['url' => $url, 'exception' => $exception]);
return '';
}
if (empty($curlResult)) {
return '';
}
$body = $curlResult->getBody();
if (!$curlResult->isSuccess() || empty($body)) {
if (in_array($curlResult->getReturnCode(), [403, 404, 406, 410])) {
return null;
}
return '';
}
$object = json_decode($body, true);
if (empty($object) || !is_array($object)) {
$element = explode(';', $curlResult->getContentType());
if (!in_array($element[0], ['application/activity+json', 'application/ld+json', 'application/json'])) {
Logger::debug('Unexpected content-type', ['url' => $url, 'content-type' => $curlResult->getContentType()]);
return null;
}
Logger::notice('Invalid JSON data', ['url' => $url, 'content-type' => $curlResult->getContentType(), 'body' => $body]);
return '';
}
@ -1560,28 +1589,28 @@ class Processor
$actor = $object_actor;
}
if (!empty($object['published'])) {
$published = $object['published'];
} elseif (!empty($child['published'])) {
$published = $child['published'];
$ldobject = JsonLD::compact($object);
$type = JsonLD::fetchElement($ldobject, '@type');
$object_id = JsonLD::fetchElement($ldobject, 'as:object', '@id');
if (!in_array($type, Receiver::CONTENT_TYPES) && !empty($object_id)) {
if (($type == 'as:Announce') && !empty($relay_actor) && ($completion = Receiver::COMPLETION_RELAY)) {
if (Item::searchByLink($object_id)) {
return $object_id;
}
Logger::debug('Fetch announced activity', ['type' => $type, 'id' => $object_id, 'actor' => $relay_actor, 'signer' => $signer]);
return self::fetchMissingActivity($object_id, $child, $relay_actor, $completion, $uid);
}
$activity = $object;
$ldactivity = $ldobject;
} else {
$published = DateTimeFormat::utcNow();
$activity = self::getActivityForObject($object, $actor);
$ldactivity = JsonLD::compact($activity);
$object_id = $object['id'];
}
$activity = [];
$activity['@context'] = $object['@context'] ?? ActivityPub::CONTEXT;
unset($object['@context']);
$activity['id'] = $object['id'];
$activity['to'] = $object['to'] ?? [];
$activity['cc'] = $object['cc'] ?? [];
$activity['audience'] = $object['audience'] ?? [];
$activity['actor'] = $actor;
$activity['object'] = $object;
$activity['published'] = $published;
$activity['type'] = 'Create';
$ldactivity = JsonLD::compact($activity);
$ldactivity['recursion-depth'] = !empty($child['recursion-depth']) ? $child['recursion-depth'] + 1 : 0;
if ($object_actor != $actor) {
@ -1600,8 +1629,8 @@ class Processor
if ($completion == Receiver::COMPLETION_RELAY) {
$ldactivity['from-relay'] = $ldactivity['thread-completion'];
if (!self::acceptIncomingMessage($ldactivity, $object['id'])) {
return '';
if (in_array($type, Receiver::CONTENT_TYPES) && !self::acceptIncomingMessage($ldactivity, $object_id)) {
return null;
}
}
@ -1624,6 +1653,31 @@ class Processor
return $activity['id'];
}
private static function getActivityForObject(array $object, string $actor): array
{
if (!empty($object['published'])) {
$published = $object['published'];
} elseif (!empty($child['published'])) {
$published = $child['published'];
} else {
$published = DateTimeFormat::utcNow();
}
$activity = [];
$activity['@context'] = $object['@context'] ?? ActivityPub::CONTEXT;
unset($object['@context']);
$activity['id'] = $object['id'];
$activity['to'] = $object['to'] ?? [];
$activity['cc'] = $object['cc'] ?? [];
$activity['audience'] = $object['audience'] ?? [];
$activity['actor'] = $actor;
$activity['object'] = $object;
$activity['published'] = $published;
$activity['type'] = 'Create';
return $activity;
}
/**
* Test if incoming relay messages should be accepted
*

81
src/Protocol/ActivityPub/Receiver.php
View file

@ -108,7 +108,7 @@ class Receiver
if (empty($apcontact)) {
Logger::notice('Unable to retrieve AP contact for actor - message is discarded', ['actor' => $actor]);
return;
} elseif (APContact::isRelay($apcontact)) {
} elseif (APContact::isRelay($apcontact) && self::isRelayPost($ldactivity)) {
self::processRelayPost($ldactivity, $actor);
return;
} else {
@ -116,7 +116,7 @@ class Receiver
}
$sig_contact = HTTPSignature::getKeyIdContact($header);
if (APContact::isRelay($sig_contact)) {
if (APContact::isRelay($sig_contact) && self::isRelayPost($ldactivity)) {
Logger::info('Message from a relay', ['url' => $sig_contact['url']]);
self::processRelayPost($ldactivity, $sig_contact['url']);
return;
@ -169,6 +169,34 @@ class Receiver
self::processActivity($ldactivity, $body, $uid, $trust_source, true, $signer, $http_signer);
}
/**
* Check if the activity is a post rhat can be send via a relay
*
* @param array $activity
* @return boolean
*/
private static function isRelayPost(array $activity): bool
{
$type = JsonLD::fetchElement($activity, '@type');
if (!$type) {
return false;
}
$object_type = JsonLD::fetchElement($activity, 'as:object', '@type') ?? '';
$object_id = JsonLD::fetchElement($activity, 'as:object', '@id');
if (empty($object_id)) {
return false;
}
$handle = ($type == 'as:Announce');
if (!$handle && in_array($type, ['as:Create', 'as:Update'])) {
$handle = in_array($object_type, self::CONTENT_TYPES);
}
return $handle;
}
/**
* Process incoming posts from relays
*
@ -192,34 +220,6 @@ class Receiver
return;
}
$handle = ($type == 'as:Announce');
if (!$handle && in_array($type, ['as:Create', 'as:Update'])) {
$handle = in_array($object_type, self::CONTENT_TYPES);
}
if (!$handle) {
$trust_source = false;
$object_data = self::prepareObjectData($activity, 0, false, $trust_source);
if (!$trust_source) {
Logger::notice('Activity trust could not be achieved.', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor, 'activity' => $activity]);
return;
}
if (empty($object_data)) {
Logger::notice('No object data found', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor, 'activity' => $activity]);
return;
}
if (self::routeActivities($object_data, $type, true)) {
Logger::debug('Handled activity', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor]);
} else {
Logger::info('Unhandled activity', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor, 'activity' => $activity]);
}
return;
}
$contact = Contact::getByURL($actor);
if (empty($contact)) {
Logger::info('Relay contact not found', ['actor' => $actor]);
@ -231,7 +231,7 @@ class Receiver
return;
}
Logger::debug('Got relayed message id', ['id' => $object_id, 'actor' => $actor]);
Logger::debug('Process post from relay server', ['type' => $type, 'object_type' => $object_type, 'object_id' => $object_id, 'actor' => $actor]);
$item_id = Item::searchByLink($object_id);
if ($item_id) {
@ -239,10 +239,21 @@ class Receiver
return;
}
$id = Processor::fetchMissingActivity($object_id, [], $actor, self::COMPLETION_RELAY);
if (empty($id)) {
Logger::notice('Relayed message had not been fetched', ['id' => $object_id, 'actor' => $actor]);
return;
if (!DI::config()->get('system', 'decoupled_receiver')) {
$id = Processor::fetchMissingActivity($object_id, [], $actor, self::COMPLETION_RELAY);
if (!empty($id)) {
Logger::notice('Relayed message is fetched', ['result' => $id, 'id' => $object_id, 'actor' => $actor]);
} else {
Logger::notice('Relayed message had not been fetched', ['id' => $object_id, 'actor' => $actor, 'activity' => $activity]);
}
} elseif (!Fetch::hasWorker($object_id)) {
Logger::notice('Fetching is done by worker.', ['id' => $object_id]);
Fetch::add($object_id);
$activity['recursion-depth'] = 0;
$wid = Worker::add(Worker::PRIORITY_HIGH, 'FetchMissingActivity', $object_id, [], $actor, self::COMPLETION_RELAY);
Fetch::setWorkerId($object_id, $wid);
} else {
Logger::debug('Activity will already be fetched via a worker.', ['url' => $object_id]);
}
}