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[ActivityPub] The protocol allows content to be null, GNU social doesn't, we'll reject silentiously

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Reported by kaniini
This commit is contained in:
Diogo Cordeiro
2019-10-11 19:09:08 +01:00
parent 6284b155b8
commit b434bead2c
6 changed files with 90 additions and 74 deletions
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31
plugins/ActivityPub/lib/models/Activitypub_create.php
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@@ -39,23 +39,23 @@ class Activitypub_create
/**
* Generates an ActivityPub representation of a Create
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $actor
* @param array $object
* @param bool $directMesssage whether it is a private Create activity or not
* @param bool $directMessage whether it is a private Create activity or not
* @return array pretty array to be used in a response
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function create_to_array(string $actor, array $object, bool $directMessage = false): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $object['id'].'/create',
'type' => 'Create',
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $object['id'] . '/create',
'type' => 'Create',
'directMessage' => $directMessage,
'to' => $object['to'],
'cc' => $object['cc'],
'actor' => $actor,
'object' => $object
'to' => $object['to'],
'cc' => $object['cc'],
'actor' => $actor,
'object' => $object
];
return $res;
}
@@ -63,11 +63,12 @@ class Activitypub_create
/**
* Verifies if a given object is acceptable for a Create Activity.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param array $object
* @throws Exception
* @return bool True if acceptable, false if valid but unsupported
* @throws Exception if invalid
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_object($object)
public static function validate_object($object): bool
{
if (!is_array($object)) {
common_debug('ActivityPub Create Validator: Rejected because of invalid Object format.');
@@ -84,11 +85,12 @@ class Activitypub_create
switch ($object['type']) {
case 'Note':
// Validate data
Activitypub_notice::validate_note($object);
return Activitypub_notice::validate_note($object);
break;
default:
throw new Exception('This is not a supported Object Type for Create Activity.');
}
return true;
}
/**
@@ -100,7 +102,8 @@ class Activitypub_create
* @return bool true if note is private, false otherwise
* @author Bruno casteleiro <brunoccast@fc.up.pt>
*/
public static function isPrivateNote(array $activity): bool {
public static function isPrivateNote(array $activity): bool
{
if (isset($activity['directMessage'])) {
return $activity['directMessage'];
}