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[PLUGIN][ActivityPub] Introduce ActivitypubObject. Beware, inside the plugin, an Object can never be an Activity.

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Many bug fixes and other major changes (interface changed, see EVENTS.md)
This commit is contained in:
Diogo Peralta Cordeiro
2021-12-08 22:24:52 +00:00
parent b1227d36f1
commit 480a42cca5
10 changed files with 400 additions and 121 deletions
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89
plugins/ActivityPub/Util/Model/Activity.php
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@@ -31,6 +31,7 @@ declare(strict_types=1);
namespace Plugin\ActivityPub\Util\Model;
use ActivityPhp\Type;
use ActivityPhp\Type\AbstractObject;
use App\Core\DB\DB;
use App\Core\Event;
@@ -40,10 +41,15 @@ use App\Util\Exception\ClientException;
use App\Util\Exception\NoSuchActorException;
use DateTime;
use DateTimeInterface;
use Exception;
use InvalidArgumentException;
use Plugin\ActivityPub\ActivityPub;
use Plugin\ActivityPub\Entity\ActivitypubActivity;
use Plugin\ActivityPub\Util\Model;
use Symfony\Contracts\HttpClient\Exception\ClientExceptionInterface;
use Symfony\Contracts\HttpClient\Exception\RedirectionExceptionInterface;
use Symfony\Contracts\HttpClient\Exception\ServerExceptionInterface;
use Symfony\Contracts\HttpClient\Exception\TransportExceptionInterface;
/**
* This class handles translation between JSON and ActivityPub Activities
@@ -60,72 +66,75 @@ class Activity extends Model
* @param string|AbstractObject $json
* @param array $options
* @return ActivitypubActivity
* @throws ClientException
* @throws NoSuchActorException
* @throws ClientExceptionInterface
* @throws RedirectionExceptionInterface
* @throws ServerExceptionInterface
* @throws TransportExceptionInterface
*/
public static function fromJson(string|AbstractObject $json, array $options = []): ActivitypubActivity
{
$type_activity = is_string($json) ? self::jsonToType($json) : $json;
$source = $options['source'];
$activity_stream_two_verb_to_gs_verb = fn(string $verb): string => match ($verb) {
'Create' => 'create',
default => throw new ClientException('Invalid verb'),
};
$activity_stream_two_object_type_to_gs_table = fn(string $object): string => match ($object) {
'Note' => 'note',
default => throw new ClientException('Invalid verb'),
};
// Ditch known activities
$ap_act = ActivitypubActivity::getWithPK(['activity_uri' => $type_activity->get('id')]);
if (is_null($ap_act)) {
$actor = ActivityPub::getActorByUri($type_activity->get('actor'));
if (!$type_activity->has('object') || !$type_activity->get('object')->has('type')) {
throw new InvalidArgumentException('Activity Object or Activity Object Type is missing.');
if (!is_null($ap_act)) {
return $ap_act;
}
// Find Actor and Object
$actor = ActivityPub::getActorByUri($type_activity->get('actor'));
$type_object = $type_activity->get('object');
if (is_string($type_object)) { // Retrieve it
$type_object = ActivityPub::getObjectByUri($type_object, try_online: true);
} else { // Encapsulated, if we have it locally, prefer it
$type_object = ActivityPub::getObjectByUri($type_object->get('id'), try_online: false) ?? $type_object;
}
if (($type_object instanceof Type\AbstractObject)) { // It's a new object apparently
if (Event::handle('NewActivityPubActivity', [$actor, $type_activity, $type_object, &$ap_act]) !== Event::stop) {
return self::handle_core_activity($actor, $type_activity, $type_object, $ap_act);
}
// Store Object if new
$ap_act = ActivitypubActivity::getWithPK(['object_uri' => $type_activity->get('object')->get('id')]);
if (!is_null($ap_act)) {
$obj = $ap_act->getActivity()->getObject();
} else { // Object was already stored locally then
if (Event::handle('NewActivityPubActivityWithObject', [$actor, $type_activity, $type_object, &$ap_act]) !== Event::stop) {
return self::handle_core_activity($actor, $type_activity, $type_object, $ap_act);
}
}
return $ap_act;
}
private static function handle_core_activity(\App\Entity\Actor $actor, AbstractObject $type_activity, mixed $type_object, ?ActivitypubActivity &$ap_act): ActivitypubActivity
{
if ($type_activity->get('type') === 'Create' && $type_object->get('type') === 'Note') {
if ($type_object instanceof AbstractObject) {
$note = Note::fromJson($type_object, ['test_authority' => true, 'actor_uri' => $type_activity->get('actor'), 'actor' => $actor, 'actor_id' => $actor->getId()]);
} else {
$obj = null;
switch ($type_activity->get('object')->get('type')) {
case 'Note':
$obj = Note::fromJson($type_activity->get('object'), ['source' => $source, 'actor_uri' => $type_activity->get('actor'), 'actor_id' => $actor->getId()]);
break;
default:
if (!Event::handle('ActivityPubObject', [$type_activity->get('object')->get('type'), $type_activity->get('object'), &$obj])) {
throw new ClientException('Unsupported Object type.');
}
break;
if ($type_object instanceof \App\Entity\Note) {
$note = $type_object;
} else {
throw new Exception('dunno bro');
}
DB::persist($obj);
}
// Store Activity
$act = GSActivity::create([
'actor_id' => $actor->getId(),
'verb' => $activity_stream_two_verb_to_gs_verb($type_activity->get('type')),
'object_type' => $activity_stream_two_object_type_to_gs_table($type_activity->get('object')->get('type')),
'object_id' => $obj->getId(),
'is_local' => false,
'verb' => 'create',
'object_type' => 'note',
'object_id' => $note->getId(),
'created' => new DateTime($type_activity->get('published') ?? 'now'),
'source' => $source,
'source' => 'ActivityPub',
]);
DB::persist($act);
// Store ActivityPub Activity
$ap_act = ActivitypubActivity::create([
'activity_id' => $act->getId(),
'activity_uri' => $type_activity->get('id'),
'object_uri' => $type_activity->get('object')->get('id'),
'is_local' => false,
'created' => new DateTime($type_activity->get('published') ?? 'now'),
'modified' => new DateTime(),
]);
DB::persist($ap_act);
}
Event::handle('ActivityPubNewActivity', [&$ap_act, &$act, &$obj]);
return $ap_act;
}