Island, Agent: Move local IP and interface retrieval to common

Both, island and agent needs to get local IP's/interfaces. We should also consider merging them, since interfaces also contain IP's

monkey/common/network/network_utils.py

@@ -1,4 +1,30 @@
-from typing import Optional, Tuple
+import ipaddress
+from ipaddress import IPv4Interface
+from typing import List, Optional, Sequence, Tuple
+
+from netifaces import AF_INET, ifaddresses, interfaces
+
+
+def get_local_ip_addresses() -> Sequence[str]:
+    ip_list = []
+    for interface in interfaces():
+        addresses = ifaddresses(interface).get(AF_INET, [])
+        ip_list.extend([link["addr"] for link in addresses if link["addr"] != "127.0.0.1"])
+    return ip_list
+
+
+def get_local_interfaces() -> List[IPv4Interface]:
+    local_interfaces = []
+    for interface in interfaces():
+        addresses = ifaddresses(interface).get(AF_INET, [])
+        local_interfaces.extend(
+            [
+                ipaddress.IPv4Interface(link["addr"] + "/" + link["netmask"])
+                for link in addresses
+                if link["addr"] != "127.0.0.1"
+            ]
+        )
+    return local_interfaces
 
 
 # TODO: `address_to_port()` should return the port as an integer.

monkey/infection_monkey/control.py

@@ -7,8 +7,9 @@ import requests
 from urllib3 import disable_warnings
 
 from common.common_consts.timeouts import LONG_REQUEST_TIMEOUT, MEDIUM_REQUEST_TIMEOUT
+from common.network.network_utils import get_local_ip_addresses
 from infection_monkey.config import GUID
-from infection_monkey.network.info import get_host_subnets, local_ips
+from infection_monkey.network.info import get_host_subnets
 from infection_monkey.utils import agent_process
 
 disable_warnings()  # noqa DUO131
@@ -38,7 +39,7 @@ class ControlClient:
         monkey = {
             "guid": GUID,
             "hostname": hostname,
-            "ip_addresses": local_ips(),
+            "ip_addresses": get_local_ip_addresses(),
             "networks": get_host_subnets(),
             "description": " ".join(platform.uname()),
             "parent": parent,

monkey/infection_monkey/master/control_channel.py

@@ -11,8 +11,8 @@ from common import AgentRegistrationData
 from common.agent_configuration import AgentConfiguration
 from common.common_consts.timeouts import SHORT_REQUEST_TIMEOUT
 from common.credentials import Credentials
+from common.network.network_utils import get_local_interfaces
 from infection_monkey.i_control_channel import IControlChannel, IslandCommunicationError
-from infection_monkey.network.info import get_network_interfaces
 from infection_monkey.utils import agent_process
 from infection_monkey.utils.ids import get_agent_id, get_machine_id
 
@@ -34,7 +34,7 @@ class ControlChannel(IControlChannel):
             # parent_id=parent,
             parent_id=None,  # None for now, until we change GUID to UUID
             cc_server=self._control_channel_server,
-            network_interfaces=get_network_interfaces(),
+            network_interfaces=get_local_interfaces(),
         )
 
         try:

monkey/infection_monkey/monkey.py

@@ -15,7 +15,11 @@ from common.event_serializers import (
     register_common_agent_event_serializers,
 )
 from common.events import CredentialsStolenEvent
-from common.network.network_utils import address_to_ip_port
+from common.network.network_utils import (
+    address_to_ip_port,
+    get_local_interfaces,
+    get_local_ip_addresses,
+)
 from common.utils.argparse_types import positive_int
 from common.utils.attack_utils import ScanStatus, UsageEnum
 from common.version import get_version
@@ -45,7 +49,7 @@ from infection_monkey.master import AutomatedMaster
 from infection_monkey.master.control_channel import ControlChannel
 from infection_monkey.model import VictimHostFactory
 from infection_monkey.network.firewall import app as firewall
-from infection_monkey.network.info import get_free_tcp_port, get_network_interfaces, local_ips
+from infection_monkey.network.info import get_free_tcp_port
 from infection_monkey.network.relay import TCPRelay
 from infection_monkey.network.relay.utils import (
     find_server,
@@ -201,7 +205,7 @@ class InfectionMonkey:
             self._cmd_island_port,
             client_disconnect_timeout=config.keep_tunnel_open_time,
         )
-        relay_servers = [f"{ip}:{relay_port}" for ip in local_ips()]
+        relay_servers = [f"{ip}:{relay_port}" for ip in get_local_ip_addresses()]
 
         if not maximum_depth_reached(config.propagation.maximum_depth, self._current_depth):
             self._relay.start()
@@ -220,7 +224,7 @@ class InfectionMonkey:
         return agent_event_serializer_registry
 
     def _build_master(self, relay_servers: List[str]):
-        local_network_interfaces = InfectionMonkey._get_local_network_interfaces()
+        local_network_interfaces = get_local_interfaces()
 
         # TODO control_channel and control_client have same responsibilities, merge them
         propagation_credentials_repository = AggregatingPropagationCredentialsRepository(
@@ -271,14 +275,6 @@ class InfectionMonkey:
             AgentEventForwarder(server_address, agent_event_serializer_registry).send_event
         )
 
-    @staticmethod
-    def _get_local_network_interfaces() -> List[IPv4Interface]:
-        local_network_interfaces = get_network_interfaces()
-        for interface in local_network_interfaces:
-            logger.debug(f"Found local interface {str(interface)}")
-
-        return local_network_interfaces
-
     def _build_puppet(
         self,
         propagation_credentials_repository: IPropagationCredentialsRepository,

monkey/infection_monkey/network/info.py

@@ -2,10 +2,9 @@ import itertools
 import socket
 import struct
 from dataclasses import dataclass
-from ipaddress import IPv4Interface
 from random import shuffle  # noqa: DUO102
 from threading import Lock
-from typing import Dict, List, Set
+from typing import Dict, Set
 
 import netifaces
 import psutil
@@ -29,10 +28,6 @@ class NetworkAddress:
     domain: str
 
 
-def get_network_interfaces() -> List[IPv4Interface]:
-    return [IPv4Interface(f"{i['addr']}/{i['netmask']}") for i in get_host_subnets()]
-
-
 def get_host_subnets():
     """
     Returns a list of subnets visible to host (omitting loopback and auto conf networks)
@@ -60,20 +55,12 @@ def get_host_subnets():
 
 if is_windows_os():
 
-    def local_ips():
-        local_hostname = socket.gethostname()
-        return socket.gethostbyname_ex(local_hostname)[2]
-
     def get_routes():
         raise NotImplementedError()
 
 else:
     from fcntl import ioctl
 
-    def local_ips():
-        valid_ips = [network["addr"] for network in get_host_subnets()]
-        return valid_ips
-
     def get_routes():  # based on scapy implementation for route parsing
         try:
             f = open("/proc/net/route", "r")

monkey/monkey_island/cc/models/monkey.py

@@ -19,7 +19,7 @@ from mongoengine import (
 from monkey_island.cc.models.command_control_channel import CommandControlChannel
 from monkey_island.cc.models.monkey_ttl import MonkeyTtl, create_monkey_ttl_document
 from monkey_island.cc.server_utils.consts import DEFAULT_MONKEY_TTL_EXPIRY_DURATION_IN_SECONDS
-from monkey_island.cc.server_utils.network_utils import get_ip_addresses
+from monkey_island.cc.server_utils.network_utils import get_cached_local_ip_addresses
 
 
 class ParentNotFoundError(Exception):
@@ -123,7 +123,8 @@ class Monkey(Document):
     def get_label_by_id(object_id):
         current_monkey = Monkey.get_single_monkey_by_id(object_id)
         label = Monkey.get_hostname_by_id(object_id) + " : " + current_monkey.ip_addresses[0]
-        if len(set(current_monkey.ip_addresses).intersection(get_ip_addresses())) > 0:
+        local_ips = map(str, get_cached_local_ip_addresses())
+        if len(set(current_monkey.ip_addresses).intersection(local_ips)) > 0:
             label = "MonkeyIsland - " + label
         return label
 

monkey/monkey_island/cc/server_setup.py

@@ -37,7 +37,7 @@ from monkey_island.cc.server_utils.consts import (  # noqa: E402
     MONKEY_ISLAND_ABS_PATH,
 )
 from monkey_island.cc.server_utils.island_logger import reset_logger, setup_logging  # noqa: E402
-from monkey_island.cc.server_utils.network_utils import get_ip_addresses  # noqa: E402
+from monkey_island.cc.server_utils.network_utils import get_cached_local_ip_addresses  # noqa: E402
 from monkey_island.cc.services.initialize import initialize_services  # noqa: E402
 from monkey_island.cc.setup import island_config_options_validator  # noqa: E402
 from monkey_island.cc.setup import (  # noqa: E402
@@ -106,7 +106,7 @@ def _configure_logging(config_options):
 def _collect_system_info() -> Tuple[Sequence[str], Deployment, Version]:
     deployment = _get_deployment()
     version = Version(get_version(), deployment)
-    return (get_ip_addresses(), deployment, version)
+    return (get_cached_local_ip_addresses(), deployment, version)
 
 
 def _get_deployment() -> Deployment:

monkey/monkey_island/cc/server_utils/network_utils.py

@@ -1,23 +1,14 @@
-import ipaddress
+from ipaddress import IPv4Address, IPv4Interface
 from typing import Sequence
 
-from netifaces import AF_INET, ifaddresses, interfaces
 from ring import lru
 
-# TODO: This functionality is duplicated in the agent. Unify them after 2216-tcp-relay is merged
+from common.network.network_utils import get_local_interfaces, get_local_ip_addresses
 
 
-# The local IP addresses list should not change often. Therefore, we can cache the result and never
-# call this function more than once. This stopgap measure is here since this function is called a
-# lot of times during the report generation. This means that if the interfaces of the Island machine
-# change, the Island process needs to be restarted.
 @lru(maxsize=1)
-def get_ip_addresses() -> Sequence[str]:
-    ip_list = []
-    for interface in interfaces():
-        addresses = ifaddresses(interface).get(AF_INET, [])
-        ip_list.extend([link["addr"] for link in addresses if link["addr"] != "127.0.0.1"])
-    return ip_list
+def get_cached_local_ip_addresses() -> Sequence[IPv4Address]:
+    return get_local_ip_addresses()
 
 
 # The subnets list should not change often. Therefore, we can cache the result and never call this
@@ -25,15 +16,5 @@ def get_ip_addresses() -> Sequence[str]:
 # during the report generation. This means that if the interfaces or subnets of the Island machine
 # change, the Island process needs to be restarted.
 @lru(maxsize=1)
-def get_subnets():
-    subnets = []
-    for interface in interfaces():
-        addresses = ifaddresses(interface).get(AF_INET, [])
-        subnets.extend(
-            [
-                ipaddress.ip_interface(link["addr"] + "/" + link["netmask"]).network
-                for link in addresses
-                if link["addr"] != "127.0.0.1"
-            ]
-        )
-    return subnets
+def get_cached_local_interfaces() -> Sequence[IPv4Interface]:
+    return get_local_interfaces()

monkey/monkey_island/cc/services/node.py

@@ -7,7 +7,7 @@ import monkey_island.cc.services.log
 from monkey_island.cc import models
 from monkey_island.cc.database import mongo
 from monkey_island.cc.models import Monkey
-from monkey_island.cc.server_utils.network_utils import get_ip_addresses
+from monkey_island.cc.server_utils.network_utils import get_cached_local_ip_addresses
 from monkey_island.cc.services.edge.displayed_edge import DisplayedEdgeService
 from monkey_island.cc.services.edge.edge import EdgeService
 from monkey_island.cc.services.utils.node_states import NodeStates
@@ -110,7 +110,7 @@ class NodeService:
     def get_monkey_label(monkey):
         # todo
         label = monkey["hostname"] + " : " + monkey["ip_addresses"][0]
-        ip_addresses = get_ip_addresses()
+        ip_addresses = get_cached_local_ip_addresses()
         if len(set(monkey["ip_addresses"]).intersection(ip_addresses)) > 0:
             label = "MonkeyIsland - " + label
         return label
@@ -118,7 +118,7 @@ class NodeService:
     @staticmethod
     def get_monkey_group(monkey):
         keywords = []
-        if len(set(monkey["ip_addresses"]).intersection(get_ip_addresses())) != 0:
+        if len(set(monkey["ip_addresses"]).intersection(get_cached_local_ip_addresses())) != 0:
             keywords.extend(["island", "monkey"])
         else:
             monkey_type = "manual" if NodeService.get_monkey_manual_run(monkey) else "monkey"
@@ -275,7 +275,7 @@ class NodeService:
     # It's better to just initialize the island machine on reset I think
     @staticmethod
     def get_monkey_island_monkey():
-        ip_addresses = get_ip_addresses()
+        ip_addresses = get_cached_local_ip_addresses()
         for ip_address in ip_addresses:
             monkey = NodeService.get_monkey_by_ip(ip_address)
             if monkey is not None:
@@ -297,7 +297,7 @@ class NodeService:
     @staticmethod
     def get_monkey_island_node():
         island_node = NodeService.get_monkey_island_pseudo_net_node()
-        island_node["ip_addresses"] = get_ip_addresses()
+        island_node["ip_addresses"] = get_cached_local_ip_addresses()
         island_node["domain_name"] = socket.gethostname()
         return island_node
 

monkey/monkey_island/cc/services/reporting/report.py

@@ -10,7 +10,10 @@ from monkey_island.cc.database import mongo
 from monkey_island.cc.models import Monkey
 from monkey_island.cc.models.report import get_report, save_report
 from monkey_island.cc.repository import IAgentConfigurationRepository, ICredentialsRepository
-from monkey_island.cc.server_utils.network_utils import get_ip_addresses, get_subnets
+from monkey_island.cc.server_utils.network_utils import (
+    get_cached_local_interfaces,
+    get_cached_local_ip_addresses,
+)
 from monkey_island.cc.services.node import NodeService
 from monkey_island.cc.services.reporting.exploitations.manual_exploitation import get_manual_monkeys
 from monkey_island.cc.services.reporting.exploitations.monkey_exploitation import (
@@ -175,7 +178,7 @@ class ReportService:
     @staticmethod
     def get_island_cross_segment_issues():
         issues = []
-        island_ips = get_ip_addresses()
+        island_ips = get_cached_local_ip_addresses()
         for monkey in mongo.db.monkey.find(
             {"tunnel": {"$exists": False}}, {"tunnel": 1, "guid": 1, "hostname": 1}
         ):
@@ -194,7 +197,9 @@ class ReportService:
                         "type": "island_cross_segment",
                         "machine": monkey["hostname"],
                         "networks": [str(subnet) for subnet in monkey_subnets],
-                        "server_networks": [str(subnet) for subnet in get_subnets()],
+                        "server_networks": [
+                            str(interface.network) for interface in get_cached_local_interfaces()
+                        ],
                     }
                 )