#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

src/primaite/simulator/system/services/database/database_service.py

@@ -377,6 +377,8 @@ class DatabaseService(Service):
                     )
                 else:
                     result = {"status_code": 401, "type": "sql"}
+        else:
+            self.sys_log.info(f"{self.name}: Ignoring payload as it is not a Database payload")
         self.send(payload=result, session_id=session_id)
         return True
 

src/primaite/simulator/system/software.py

@@ -4,9 +4,10 @@ from abc import abstractmethod
 from datetime import datetime
 from enum import Enum
 from ipaddress import IPv4Address, IPv4Network
-from typing import Any, Dict, Optional, TYPE_CHECKING, Union
+from typing import Any, Dict, Optional, Set, TYPE_CHECKING, Union
 
 from prettytable import MARKDOWN, PrettyTable
+from pydantic import Field
 
 from primaite.interface.request import RequestResponse
 from primaite.simulator.core import RequestManager, RequestType, SimComponent
@@ -252,6 +253,8 @@ class IOSoftware(Software):
     "Indicates if the software uses UDP protocol for communication. Default is True."
     port: Port
     "The port to which the software is connected."
+    listen_on_ports: Set[Port] = Field(default_factory=set)
+    "The set of ports to listen on."
     protocol: IPProtocol
     "The IP Protocol the Software operates on."
     _connections: Dict[str, Dict] = {}

tests/integration_tests/system/test_service_listening_on_ports.py

@@ -0,0 +1,64 @@
+# © Crown-owned copyright 2024, Defence Science and Technology Laboratory UK
+from typing import Any, Dict, List, Set
+
+from pydantic import Field
+
+from primaite.simulator.network.transmission.network_layer import IPProtocol
+from primaite.simulator.network.transmission.transport_layer import Port
+from primaite.simulator.system.applications.database_client import DatabaseClient
+from primaite.simulator.system.services.database.database_service import DatabaseService
+from primaite.simulator.system.services.service import Service
+
+
+class _DatabaseListener(Service):
+    name: str = "DatabaseListener"
+    protocol: IPProtocol = IPProtocol.TCP
+    port: Port = Port.NONE
+    listen_on_ports: Set[Port] = {Port.POSTGRES_SERVER}
+    payloads_received: List[Any] = Field(default_factory=list)
+
+    def receive(self, payload: Any, session_id: str, **kwargs) -> bool:
+        self.payloads_received.append(payload)
+        self.sys_log.info(f"{self.name}: received payload {payload}")
+        return True
+
+    def describe_state(self) -> Dict:
+        return super().describe_state()
+
+
+def test_http_listener(client_server):
+    computer, server = client_server
+
+    server.software_manager.install(DatabaseService)
+    server_db = server.software_manager.software["DatabaseService"]
+    server_db.start()
+
+    server.software_manager.install(_DatabaseListener)
+    server_db_listener: _DatabaseListener = server.software_manager.software["DatabaseListener"]
+    server_db_listener.start()
+
+    computer.software_manager.install(DatabaseClient)
+    computer_db_client: DatabaseClient = computer.software_manager.software["DatabaseClient"]
+
+    computer_db_client.run()
+    computer_db_client.server_ip_address = server.network_interface[1].ip_address
+
+    assert len(server_db_listener.payloads_received) == 0
+    computer.session_manager.receive_payload_from_software_manager(
+        payload="masquerade as Database traffic",
+        dst_ip_address=server.network_interface[1].ip_address,
+        dst_port=Port.POSTGRES_SERVER,
+        ip_protocol=IPProtocol.TCP,
+    )
+
+    assert len(server_db_listener.payloads_received) == 1
+
+    db_connection = computer_db_client.get_new_connection()
+
+    assert db_connection
+
+    assert len(server_db_listener.payloads_received) == 2
+
+    assert db_connection.query("SELECT")
+
+    assert len(server_db_listener.payloads_received) == 3