Fix error in windows network plugins

dissect/target/plugins/os/windows/network.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import re
 from enum import IntEnum
 from functools import lru_cache
 from typing import Iterator
@@ -224,11 +225,13 @@ def _try_value(subkey: RegistryKey, value: str) -> str | list | None:
         return None
 
 
-def _get_config_value(key: RegistryKey, name: str) -> set:
+def _get_config_value(key: RegistryKey, name: str, split_char: list[str] | None = None) -> set:
     value = _try_value(key, name)
     if not value or value in ("", "0.0.0.0", None, [], ["0.0.0.0"]):
         return set()
-
+    if split_char and isinstance(value, str):
+        split_regexp = '|'.join(re.escape(c) for c in split_char)
+        value = re.split(split_regexp, value)
     if isinstance(value, list):
         return set(value)
 
@@ -354,11 +357,11 @@ def _extract_network_device_config(self, interface_id: str) -> list[dict[str, se
             dhcp_config["ip"].update(_get_config_value(key, "DhcpIPAddress"))
             dhcp_config["subnetmask"].update(_get_config_value(key, "DhcpSubnetMask"))
             dhcp_config["search_domain"].update(_get_config_value(key, "DhcpDomain"))
-            dhcp_config["dns"].update(_get_config_value(key, "DhcpNameServer"))
+            dhcp_config["dns"].update(_get_config_value(key, "DhcpNameServer", [" ", ","]))
 
             # Extract static configuration from the registry
             static_config["gateway"].update(_get_config_value(key, "DefaultGateway"))
-            static_config["dns"].update(_get_config_value(key, "NameServer"))
+            static_config["dns"].update(_get_config_value(key, "NameServer", [" ", ","]))
             static_config["search_domain"].update(_get_config_value(key, "Domain"))
             static_config["ip"].update(_get_config_value(key, "IPAddress"))
             static_config["subnetmask"].update(_get_config_value(key, "SubnetMask"))

tests/plugins/os/windows/test_network.py

@@ -257,7 +257,7 @@ def test_windows_network_none(
                 "DhcpIPAddress": "192.168.0.10",
                 "IPAddress": "10.0.0.10",
                 "DhcpNameServer": "192.168.0.2",
-                "NameServer": "10.0.0.2",
+                "NameServer": "10.0.0.2 10.0.0.3",
                 "SubnetMask": "255.255.255.0",
                 "DhcpSubnetMask": "255.255.255.0",
                 "VlanID": 10,
@@ -285,7 +285,7 @@ def test_windows_network_none(
                 },
                 {
                     "ip": ["10.0.0.10"],
-                    "dns": ["10.0.0.2"],
+                    "dns": ["10.0.0.3", "10.0.0.2"],
                     "gateway": ["10.0.0.1"],
                     "mac": "FE:EE:EE:EE:EE:ED",
                     "subnetmask": ["255.255.255.0"],