GNUsocial/gnu-social
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[PLUGIN][ActivityPub] Add getUriByObject, so that we can construct activities referring to other known objects (local or foreign)

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This commit is contained in:
Diogo Peralta Cordeiro 2021-12-12 06:40:13 +00:00
parent 57beb178cc
commit a005a7bcea
Signed by: diogo
GPG Key ID: 18D2D35001FBFAB0
2 changed files with 44 additions and 11 deletions
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35
plugins/ActivityPub/ActivityPub.php
View File

@ -70,6 +70,7 @@ use function count;
use function is_null;
use const PHP_URL_HOST;
use const PREG_SET_ORDER;
use InvalidArgumentException;
/**
* Adds ActivityPub support to GNU social when enabled
@ -115,13 +116,13 @@ class ActivityPub extends Plugin
'activitypub_inbox',
'/inbox.json',
[Inbox::class, 'handle'],
options: ['accept' => self::$accept_headers, 'format' => self::$accept_headers[0]],
options: ['format' => self::$accept_headers[0]],
);
$r->connect(
'activitypub_actor_inbox',
'/actor/{gsactor_id<\d+>}/inbox.json',
[Inbox::class, 'handle'],
options: ['accept' => self::$accept_headers, 'format' => self::$accept_headers[0]],
options: ['format' => self::$accept_headers[0]],
);
$r->connect(
'activitypub_actor_outbox',
@ -140,7 +141,7 @@ class ActivityPub extends Plugin
* @param string|null $url
* @return bool
*/
public function onStartGetActorUrl(Actor $actor, int $type, ?string &$url): bool
public function onStartGetActorUri(Actor $actor, int $type, ?string &$url): bool
{
if (
// Is remote?
@ -384,6 +385,34 @@ class ActivityPub extends Plugin
}
}
/**
* @param mixed $object
* @return string got from URI
*/
public static function getUriByObject(mixed $object): string
{
if ($object instanceof Note) {
if($object->getIsLocal()) {
return $object->getUrl();
} else {
// Try known remote objects
$known_object = ActivitypubObject::getByPK(['object_type' => 'note', 'object_id' => $object->getId()]);
if ($known_object instanceof ActivitypubObject) {
return $known_object->getObjectUri();
}
}
} else if ($object instanceof Activity) {
// Try known remote activities
$known_activity = ActivitypubActivity::getByPK(['activity_id' => $object->getId()]);
if ($known_activity instanceof ActivitypubActivity) {
return $known_activity->getActivityUri();
} else {
return Router::url('activity_view', ['id' => $object->getId()], Router::ABSOLUTE_URL);
}
}
throw new InvalidArgumentException('ActivityPub::getUriByObject found a limitation with: '.var_export($object, true));
}
/**
* Get a Note from ActivityPub URI, if it doesn't exist, attempt to fetch it
* This should only be necessary internally.

20
plugins/ActivityPub/Util/Model/Activity.php
View File

@ -151,25 +151,29 @@ class Activity extends Model
if ($object::class !== 'App\Entity\Activity') {
throw new InvalidArgumentException('First argument type is Activity');
}
$gs_verb_to_activity_stream_two_verb = fn($verb): string => match ($verb) {
'create' => 'Create',
default => throw new ClientException('Invalid verb'),
};
$gs_verb_to_activity_stream_two_verb = null;
if (Event::handle('GSVerbToActivityStreamsTwoActivityType', [($verb = $object->getVerb()), &$gs_verb_to_activity_stream_two_verb]) === Event::next) {
$gs_verb_to_activity_stream_two_verb = match ($verb) {
'create' => 'Create',
'undo' => 'Undo',
default => throw new ClientException('Invalid verb'),
};
}
$attr = [
'type' => $gs_verb_to_activity_stream_two_verb($object->getVerb()),
'type' => $gs_verb_to_activity_stream_two_verb,
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => Router::url('activity_view', ['id' => $object->getId()], Router::ABSOLUTE_URL),
'published' => $object->getCreated()->format(DateTimeInterface::RFC3339),
'actor' => $object->getActor()->getUri(Router::ABSOLUTE_URL),
'to' => ['https://www.w3.org/ns/activitystreams#Public'], // TODO: implement proper scope address
'cc' => ['https://www.w3.org/ns/activitystreams#Public'],
'object' => self::jsonToType(self::toJson($object->getObject())),
];
$attr['object'] = $attr['type'] === 'Create' ? self::jsonToType(Model::toJson($object->getObject())) : ActivityPub::getUriByObject($object->getObject());
$type = self::jsonToType($attr);
Event::handle('ActivityPubAddActivityStreamsTwoData', [$type->get('type'), &$type]);
return $type->toJson($options);
}
}
}