#2059: moved connection handling from Service to IOSoftware + changes that now utilise connections from IOSoftware + dos bot attacking now works + tests

tests/unit_tests/_primaite/_simulator/_system/_applications/_red_applications/test_dos_bot.py

@@ -0,0 +1,90 @@
+from ipaddress import IPv4Address
+
+import pytest
+
+from primaite.simulator.network.hardware.node_operating_state import NodeOperatingState
+from primaite.simulator.network.hardware.nodes.computer import Computer
+from primaite.simulator.network.transmission.transport_layer import Port
+from primaite.simulator.system.applications.application import ApplicationOperatingState
+from primaite.simulator.system.applications.red_applications.dos_bot import DoSAttackStage, DoSBot
+
+
+@pytest.fixture(scope="function")
+def dos_bot() -> DoSBot:
+    computer = Computer(
+        hostname="compromised_pc",
+        ip_address="192.168.0.1",
+        subnet_mask="255.255.255.0",
+        operating_state=NodeOperatingState.ON,
+    )
+
+    computer.software_manager.install(DoSBot)
+
+    dos_bot: DoSBot = computer.software_manager.software.get("DoSBot")
+    dos_bot.configure(target_ip_address=IPv4Address("192.168.0.1"))
+    dos_bot.set_original_state()
+    return dos_bot
+
+
+def test_dos_bot_creation(dos_bot):
+    """Test that the DoS bot is installed on a node."""
+    assert dos_bot is not None
+
+
+def test_dos_bot_reset(dos_bot):
+    assert dos_bot.target_ip_address == IPv4Address("192.168.0.1")
+    assert dos_bot.target_port is Port.POSTGRES_SERVER
+    assert dos_bot.payload is None
+    assert dos_bot.repeat is False
+
+    dos_bot.configure(
+        target_ip_address=IPv4Address("192.168.1.1"), target_port=Port.HTTP, payload="payload", repeat=True
+    )
+
+    # should reset the relevant items
+    dos_bot.reset_component_for_episode(episode=0)
+    assert dos_bot.target_ip_address == IPv4Address("192.168.0.1")
+    assert dos_bot.target_port is Port.POSTGRES_SERVER
+    assert dos_bot.payload is None
+    assert dos_bot.repeat is False
+
+    dos_bot.configure(
+        target_ip_address=IPv4Address("192.168.1.1"), target_port=Port.HTTP, payload="payload", repeat=True
+    )
+    dos_bot.set_original_state()
+    dos_bot.reset_component_for_episode(episode=1)
+    # should reset to the configured value
+    assert dos_bot.target_ip_address == IPv4Address("192.168.1.1")
+    assert dos_bot.target_port is Port.HTTP
+    assert dos_bot.payload == "payload"
+    assert dos_bot.repeat is True
+
+
+def test_dos_bot_cannot_run_when_node_offline(dos_bot):
+    dos_bot_node: Computer = dos_bot.parent
+    assert dos_bot_node.operating_state is NodeOperatingState.ON
+
+    dos_bot_node.power_off()
+
+    for i in range(dos_bot_node.shut_down_duration + 1):
+        dos_bot_node.apply_timestep(timestep=i)
+
+    assert dos_bot_node.operating_state is NodeOperatingState.OFF
+
+    dos_bot._application_loop()
+
+    # assert not run
+    assert dos_bot.attack_stage is DoSAttackStage.NOT_STARTED
+
+
+def test_dos_bot_not_configured(dos_bot):
+    dos_bot.target_ip_address = None
+
+    dos_bot.operating_state = ApplicationOperatingState.RUNNING
+    dos_bot._application_loop()
+
+
+def test_dos_bot_perform_port_scan(dos_bot):
+    dos_bot._perform_port_scan(p_of_success=1)
+
+    assert dos_bot.attack_stage is DoSAttackStage.PORT_SCAN

tests/unit_tests/_primaite/_simulator/_system/_applications/test_database_client.py

@@ -63,10 +63,11 @@ def test_disconnect_when_client_is_closed(database_client_on_computer):
 
 
 def test_disconnect(database_client_on_computer):
-    """Database client should set connected to False and remove the database server ip address."""
+    """Database client should remove the connection."""
     database_client, computer = database_client_on_computer
 
-    database_client.connections[uuid4()] = {}
+    database_client._connections[str(uuid4())] = {"item": True}
+    assert len(database_client.connections) == 1
 
     assert database_client.operating_state is ApplicationOperatingState.RUNNING
     assert database_client.server_ip_address is not None
@@ -75,6 +76,14 @@ def test_disconnect(database_client_on_computer):
 
     assert len(database_client.connections) == 0
 
+    uuid = str(uuid4())
+    database_client._connections[uuid] = {"item": True}
+    assert len(database_client.connections) == 1
+
+    database_client.disconnect(connection_id=uuid)
+
+    assert len(database_client.connections) == 0
+
 
 def test_query_when_client_is_closed(database_client_on_computer):
     """Database client should return False when it is not running."""

tests/unit_tests/_primaite/_simulator/_system/_services/test_services.py

@@ -1,3 +1,5 @@
+from uuid import uuid4
+
 from primaite.simulator.system.services.service import ServiceOperatingState
 from primaite.simulator.system.software import SoftwareHealthState
 
@@ -66,3 +68,34 @@ def test_enable_disable(service):
 
     service.enable()
     assert service.operating_state == ServiceOperatingState.STOPPED
+
+
+def test_overwhelm_service(service):
+    service.max_sessions = 2
+    service.start()
+
+    uuid = str(uuid4())
+    assert service.add_connection(connection_id=uuid)  # should be true
+    assert service.health_state_actual is SoftwareHealthState.GOOD
+
+    assert not service.add_connection(connection_id=uuid)  # fails because connection already exists
+    assert service.health_state_actual is SoftwareHealthState.GOOD
+
+    assert service.add_connection(connection_id=str(uuid4()))  # succeed
+    assert service.health_state_actual is SoftwareHealthState.GOOD
+
+    assert not service.add_connection(connection_id=str(uuid4()))  # fail because at capacity
+    assert service.health_state_actual is SoftwareHealthState.OVERWHELMED
+
+
+def test_create_and_remove_connections(service):
+    service.start()
+    uuid = str(uuid4())
+
+    assert service.add_connection(connection_id=uuid)  # should be true
+    assert len(service.connections) == 1
+    assert service.health_state_actual is SoftwareHealthState.GOOD
+
+    assert service.remove_connection(connection_id=uuid)  # should be true
+    assert len(service.connections) == 0
+    assert service.health_state_actual is SoftwareHealthState.GOOD