added: 'remember me' flag when logging

added: the session file
       sessions can still be available between starting and stopping the cmslu system


git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@529 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/requestcontroller.cpp

@@ -19,6 +19,7 @@
 
 RequestController::RequestController()
 {
+	last_sessions_save = time(0);
 }
 
 
@@ -121,6 +122,29 @@ return true;
 }
 
 
+void RequestController::LoadSessions()
+{
+	session_manager.LoadSessions();
+}
+
+void RequestController::SaveSessions()
+{
+	session_manager.SaveSessions();
+}
+
+
+void RequestController::SaveSessionsIfNeeded()
+{
+	time_t t = time(0);
+
+	if( last_sessions_save + 86400 > t )
+		return;
+
+	// saving once a day for safety
+	last_sessions_save = t;
+	SaveSessions();
+}
+
 
 bool RequestController::BaseUrlRedirect()
 {
@@ -182,6 +206,7 @@ void RequestController::Loop()
 			log << log1 << "uncaught exception" << logend;	
 		}
 		
+		SaveSessionsIfNeeded();
 
 		// !! this should be immediately after FCGX_Accept() but signals don't want to break FCGX_Accept
 		if( data.signal_hup )