implemented:

- at_hash in id-token
- testing for strong passwords
- better protocol detection in PathHandler
- session extension on user activity

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.oidc.datastore.file/src/main/java/de/srsoftware/oidc/datastore/file/FileStore.java

@@ -239,8 +239,10 @@ public class FileStore implements AuthorizationService, ClientService, SessionSe
 	}
 
 	@Override
-	public Session extend(String sessionId) {
-		return null;
+	public Session extend(Session session) {
+		var user	 = session.user();
+		var endOfSession = Instant.now().plus(user.sessionDuration());
+		return save(new Session(user, endOfSession, session.id()));
 	}
 
 	private JSONObject sessions() {