cleanup HTTP and HTTPS listeners when sessions are closed

Rather than listening forever after a session shuts down, close the session if
there are no other URI's registered on the listener. This allows reconfiguring
the listener without restarting framework, but should be safe for situations
where multiple modules share the same listener.

Author: Brent Cook

lib/msf/core/handler/reverse_http.rb

@@ -165,7 +165,9 @@ def setup_handler
   def stop_handler
     if self.service
       self.service.remove_resource("/")
-      Rex::ServiceManager.stop_service(self.service) if self.sessions == 0
+      if self.service.resources.empty? && self.sessions == 0
+        Rex::ServiceManager.stop_service(self.service)
+      end
     end
   end
 

lib/rex/post/meterpreter/packet_dispatcher.rb

@@ -81,6 +81,11 @@ def shutdown_passive_dispatcher
     return if not self.passive_service
     self.passive_service.remove_resource("/" + self.conn_id  + "/")
 
+    # If there are no more resources registered on the service, stop it entirely
+    if self.passive_service.resources.empty?
+      Rex::ServiceManager.stop_service(self.passive_service)
+    end
+
     self.alive      = false
     self.send_queue = []
     self.recv_queue = []