#2768 - Added listen_on_ports attribute to IOSoftware. updated software manager so that it sends copies of payloads to listening ports too. Added integration test that installs a listening service to snoop on DB traffic.

src/primaite/simulator/system/core/software_manager.py

@@ -1,4 +1,5 @@
 # © Crown-owned copyright 2024, Defence Science and Technology Laboratory UK
+from copy import deepcopy
 from ipaddress import IPv4Address, IPv4Network
 from typing import Any, Dict, List, Optional, Tuple, TYPE_CHECKING, Union
 
@@ -76,6 +77,8 @@ class SoftwareManager:
         for software in self.port_protocol_mapping.values():
             if software.operating_state in {ApplicationOperatingState.RUNNING, ServiceOperatingState.RUNNING}:
                 open_ports.append(software.port)
+                if software.listen_on_ports:
+                    open_ports += list(software.listen_on_ports)
         return open_ports
 
     def check_port_is_open(self, port: Port, protocol: IPProtocol) -> bool:
@@ -223,7 +226,9 @@ class SoftwareManager:
         frame: Frame,
     ):
         """
-        Receive a payload from the SessionManager and forward it to the corresponding service or application.
+        Receive a payload from the SessionManager and forward it to the corresponding service or applications.
+
+        This function handles both software assigned a specific port, and software listening in on other ports.
 
         :param payload: The payload being received.
         :param session: The transport session the payload originates from.
@@ -231,11 +236,17 @@ class SoftwareManager:
         if payload.__class__.__name__ == "PortScanPayload":
             self.software.get("NMAP").receive(payload=payload, session_id=session_id)
             return
-        receiver: Optional[Union[Service, Application]] = self.port_protocol_mapping.get((port, protocol), None)
-        if receiver:
-            receiver.receive(
-                payload=payload, session_id=session_id, from_network_interface=from_network_interface, frame=frame
-            )
+        main_receiver = self.port_protocol_mapping.get((port, protocol), None)
+        listening_receivers = [software for software in self.software.values() if port in software.listen_on_ports]
+        receivers = [main_receiver] + listening_receivers if main_receiver else listening_receivers
+        if receivers:
+            for receiver in receivers:
+                receiver.receive(
+                    payload=deepcopy(payload),
+                    session_id=session_id,
+                    from_network_interface=from_network_interface,
+                    frame=frame,
+                )
         else:
             self.sys_log.warning(f"No service or application found for port {port} and protocol {protocol}")
         pass