Enable remote authentication with HTTP Signatures

src/App.php

@@ -12,7 +12,9 @@ use Friendica\Core\Config\Cache\ConfigCacheLoader;
 use Friendica\Core\Config\Cache\IConfigCache;
 use Friendica\Core\Config\Configuration;
 use Friendica\Database\DBA;
+use Friendica\Model\Profile;
 use Friendica\Network\HTTPException\InternalServerErrorException;
+use Friendica\Util\HTTPSignature;
 use Friendica\Util\Profiler;
 use Psr\Log\LoggerInterface;
 
@@ -1143,6 +1145,13 @@ class App
 			Core\Worker::executeIfIdle();
 		}
 
+		if ($this->getMode()->isNormal()) {
+			$requester = HTTPSignature::getSigner('', $_SERVER);
+			if (!empty($requester)) {
+				Profile::addVisitorCookieForHandle($requester);
+			}
+		}
+
 		// ZRL
 		if (!empty($_GET['zrl']) && $this->getMode()->isNormal()) {
 			$this->query_string = Model\Profile::stripZrls($this->query_string);