. * */ namespace Friendica\Module\Debug; use Friendica\BaseModule; use Friendica\Core\Renderer; use Friendica\Core\Session; use Friendica\DI; use Friendica\Protocol\ActivityPub; use Friendica\Util\JsonLD; class ActivityPubConversion extends BaseModule { protected function content(array $request = []): string { function visible_whitespace($s) { return '

' . htmlspecialchars($s) . '

'; } $results = []; if (!empty($_REQUEST['source'])) { try { $source = json_decode($_REQUEST['source'], true); $trust_source = true; $uid = Session::getLocalUser(); $push = false; if (!$source) { throw new \Exception('Failed to decode source JSON'); } $formatted = json_encode($source, JSON_PRETTY_PRINT); $results[] = [ 'title' => DI::l10n()->t('Formatted'), 'content' => visible_whitespace(trim(var_export($formatted, true), "'")), ]; $results[] = [ 'title' => DI::l10n()->t('Source'), 'content' => visible_whitespace(var_export($source, true)) ]; $activity = JsonLD::compact($source); if (!$activity) { throw new \Exception('Failed to compact JSON'); } $results[] = [ 'title' => DI::l10n()->t('Activity'), 'content' => visible_whitespace(var_export($activity, true)) ]; $type = JsonLD::fetchElement($activity, '@type'); if (!$type) { throw new \Exception('Empty type'); } if (!JsonLD::fetchElement($activity, 'as:object', '@id')) { throw new \Exception('Empty object'); } if (!JsonLD::fetchElement($activity, 'as:actor', '@id')) { throw new \Exception('Empty actor'); } // Don't trust the source if "actor" differs from "attributedTo". The content could be forged. if ($trust_source && ($type == 'as:Create') && is_array($activity['as:object'])) { $actor = JsonLD::fetchElement($activity, 'as:actor', '@id'); $attributed_to = JsonLD::fetchElement($activity['as:object'], 'as:attributedTo', '@id'); $trust_source = ($actor == $attributed_to); if (!$trust_source) { throw new \Exception('Not trusting actor: ' . $actor . '. It differs from attributedTo: ' . $attributed_to); } } // $trust_source is called by reference and is set to true if the content was retrieved successfully $object_data = ActivityPub\Receiver::prepareObjectData($activity, $uid, $push, $trust_source); if (empty($object_data)) { throw new \Exception('No object data found'); } if (!$trust_source) { throw new \Exception('No trust for activity type "' . $type . '", so we quit now.'); } if (!empty($body) && empty($object_data['raw'])) { $object_data['raw'] = $body; } // Internal flag for thread completion. See Processor.php if (!empty($activity['thread-completion'])) { $object_data['thread-completion'] = $activity['thread-completion']; } if (!empty($activity['completion-mode'])) { $object_data['completion-mode'] = $activity['completion-mode']; } $results[] = [ 'title' => DI::l10n()->t('Object data'), 'content' => visible_whitespace(var_export($object_data, true)) ]; $item = ActivityPub\Processor::createItem($object_data, true); $results[] = [ 'title' => DI::l10n()->t('Result Item'), 'content' => visible_whitespace(var_export($item, true)) ]; } catch (\Throwable $e) { $results[] = [ 'title' => DI::l10n()->t('Error'), 'content' => $e->getMessage(), ]; } } $tpl = Renderer::getMarkupTemplate('debug/activitypubconversion.tpl'); $o = Renderer::replaceMacros($tpl, [ '$title' => DI::l10n()->t('ActivityPub Conversion'), '$source' => ['source', DI::l10n()->t('Source activity'), $_REQUEST['source'] ?? '', ''], '$results' => $results, '$submit' => DI::l10n()->t('Submit'), ]); return $o; } }