Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
namespace Friendica\Module\Diaspora;
use Friendica\App;
use Friendica\BaseModule;
use Friendica\Core\Config\Configuration;
use Friendica\Model\User;
use Friendica\Network\HTTPException;
use Friendica\Protocol\Diaspora;
use Friendica\Util\Network;
use Psr\Log\LoggerInterface;
/**
* This module is part of the Diaspora protocol.
* It is used for receiving single posts either for public or for a specific user.
*/
class Receive extends BaseModule
{
/** @var LoggerInterface */
private static $logger;
public static function init()
{
/** @var LoggerInterface $logger */
self::$logger = self::getClass(LoggerInterface::class);
}
public static function post()
{
/** @var Configuration $config */
$config = self::getClass(Configuration::class);
$enabled = $config->get('system', 'diaspora_enabled', false);
if (!$enabled) {
self::$logger->info('Diaspora disabled.');
throw new HTTPException\InternalServerErrorException('Diaspora disabled.');
}
/** @var App\Arguments $args */
$args = self::getClass(App\Arguments::class);
$type = $args->get(1);
switch ($type) {
case 'public':
self::receivePublic();
break;
case 'users':
self::receiveUser($args->get(2));
break;
default:
self::$logger->info('Wrong call.');
throw new HTTPException\InternalServerErrorException('wrong call.');
break;
}
}
/**
* Receive a public Diaspora posting
*
* @throws HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function receivePublic()
{
self::$logger->info('Diaspora: Receiving post.');
$msg = self::decodePost();
self::$logger->info('Diaspora: Dispatching.');
Diaspora::dispatchPublic($msg);
}
/**
* Receive a Diaspora posting for a user
*
* @param string $guid The GUID of the importer
*
* @throws HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function receiveUser(string $guid)
{
self::$logger->info('Diaspora: Receiving post.');
$importer = User::getByGuid($guid);
$msg = self::decodePost(false, $importer['prvkey'] ?? '');
self::$logger->info('Diaspora: Dispatching.');
if (Diaspora::dispatch($importer, $msg)) {
throw new HTTPException\OKException();
} else {
throw new HTTPException\InternalServerErrorException();
}
}
/**
* Decodes a Diaspora message based on the posted data
*
* @param string $privKey The private key of the importer
* @param bool $public True, if the post is public
*
* @return array
* @throws HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function decodePost(bool $public = true, string $privKey = '')
{
if (empty($_POST['xml'])) {
$postdata = Network::postdata();
if (empty($postdata)) {
throw new HTTPException\InternalServerErrorException('Missing postdata.');
}
self::$logger->info('Diaspora: Message is in the new format.');
$msg = Diaspora::decodeRaw($postdata, $privKey);
} else {
$xml = urldecode($_POST['xml']);
self::$logger->info('Diaspora: Decode message in the old format.');
$msg = Diaspora::decode($xml, $privKey);
if ($public && !$msg) {
self::$logger->info('Diaspora: Decode message in the new format.');
$msg = Diaspora::decodeRaw($xml, $privKey);
}
}
self::$logger->info('Diaspora: Post encoded.');
self::$logger->debug('Diaspora: Decoded message.', ['msg' => print_r($msg, true)]);
if (!is_array($msg)) {
throw new HTTPException\InternalServerErrorException('Message is not an array.');
}
return $msg;
}
}