mirror of
https://github.com/Horizontal42/netsleuth.git
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125 lines
4.4 KiB
Python
125 lines
4.4 KiB
Python
from __future__ import annotations
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from netcheck.probes.dns_leak import (
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build_adapter_result,
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build_dns_leak,
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detect_ecs_leak,
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parse_akahelp,
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parse_myaddr,
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)
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def test_akahelp_txt_records_become_a_flat_mapping():
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records = ['"ns" "203.0.113.9"', '"ecs" "198.51.100.0/24"', '"cip" "203.0.113.44"']
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assert parse_akahelp(records) == {
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"ns": "203.0.113.9",
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"ecs": "198.51.100.0/24",
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"cip": "203.0.113.44",
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}
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def test_akahelp_records_without_quotes_are_handled_too():
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assert parse_akahelp(["ns 203.0.113.9"]) == {"ns": "203.0.113.9"}
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def test_akahelp_ignores_records_it_cannot_split():
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assert parse_akahelp(["garbage", '"ns" "1.2.3.4"']) == {"ns": "1.2.3.4"}
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def test_myaddr_returns_the_echoed_resolver_address():
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assert parse_myaddr(['"203.0.113.9"']) == "203.0.113.9"
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assert parse_myaddr(["203.0.113.9"]) == "203.0.113.9"
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def test_myaddr_of_no_answer_is_none():
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assert parse_myaddr([]) is None
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assert parse_myaddr(['"not an ip"']) is None
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def test_ecs_leak_is_detected_when_a_client_subnet_is_echoed():
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assert detect_ecs_leak({"ecs": "198.51.100.0/24"}) is True
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def test_no_ecs_leak_when_the_field_is_absent_or_a_wildcard():
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assert detect_ecs_leak({}) is False
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assert detect_ecs_leak({"ecs": ""}) is False
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assert detect_ecs_leak({"ecs": "0.0.0.0/0"}) is False
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def test_adapter_result_flags_a_resolver_in_a_different_asn():
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result = build_adapter_result(
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adapter="Wi-Fi",
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resolvers=["192.168.1.1"],
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echoed_ip="203.0.113.9",
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echoed_asn="AS64501",
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egress_asn="AS64500",
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)
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assert result.matches_egress_asn is False
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assert result.adapter == "Wi-Fi"
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assert result.configured_resolvers == ["192.168.1.1"]
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def test_adapter_result_is_clean_when_the_asns_agree():
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result = build_adapter_result("wg0", ["10.7.0.1"], "203.0.113.44", "AS64500", "AS64500")
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assert result.matches_egress_asn is True
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def test_adapter_result_is_unknown_when_either_asn_is_missing():
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assert build_adapter_result("eth0", ["1.1.1.1"], "1.1.1.1", None, "AS64500").matches_egress_asn is None
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assert build_adapter_result("eth0", ["1.1.1.1"], "1.1.1.1", "AS13335", None).matches_egress_asn is None
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def test_adapter_result_asn_comparison_is_case_insensitive():
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assert build_adapter_result("eth0", ["1.1.1.1"], "1.1.1.1", "as64500", "AS64500").matches_egress_asn is True
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def test_dns_leak_note_names_the_leaking_adapter():
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leaking = build_adapter_result("Wi-Fi", ["192.168.1.1"], "203.0.113.9", "AS64501", "AS64500")
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clean = build_adapter_result("wg0", ["10.7.0.1"], "203.0.113.44", "AS64500", "AS64500")
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leak = build_dns_leak([clean, leaking], ecs_leaked=False)
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assert leak.ecs_leaked is False
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assert "Wi-Fi" in leak.note
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assert "browser" in leak.note.lower()
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def test_dns_leak_note_is_clean_when_every_adapter_agrees():
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clean = build_adapter_result("wg0", ["10.7.0.1"], "203.0.113.44", "AS64500", "AS64500")
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leak = build_dns_leak([clean], ecs_leaked=False)
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assert "no adapter" in leak.note.lower()
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def test_dns_leak_note_mentions_ecs_when_the_subnet_leaked():
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clean = build_adapter_result("wg0", ["10.7.0.1"], "203.0.113.44", "AS64500", "AS64500")
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leak = build_dns_leak([clean], ecs_leaked=True)
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assert leak.ecs_leaked is True
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assert "client subnet" in leak.note.lower()
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_CYRILLIC = set("абвгдеёжзийклмнопрстуфхцчшщъыьэюя")
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def has_cyrillic(text: str) -> bool:
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return any(ch in _CYRILLIC for ch in text.lower())
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def test_dns_leak_note_ru_names_the_leaking_adapter():
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leaking = build_adapter_result("Wi-Fi", ["192.168.1.1"], "203.0.113.9", "AS64501", "AS64500")
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clean = build_adapter_result("wg0", ["10.7.0.1"], "203.0.113.44", "AS64500", "AS64500")
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leak = build_dns_leak([clean, leaking], ecs_leaked=False)
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assert leak.note_ru
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assert has_cyrillic(leak.note_ru)
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assert "Wi-Fi" in leak.note_ru
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def test_dns_leak_note_ru_is_clean_when_every_adapter_agrees():
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clean = build_adapter_result("wg0", ["10.7.0.1"], "203.0.113.44", "AS64500", "AS64500")
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leak = build_dns_leak([clean], ecs_leaked=False)
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assert leak.note_ru
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assert has_cyrillic(leak.note_ru)
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def test_dns_leak_note_ru_mentions_ecs_when_the_subnet_leaked():
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clean = build_adapter_result("wg0", ["10.7.0.1"], "203.0.113.44", "AS64500", "AS64500")
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leak = build_dns_leak([clean], ecs_leaked=True)
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assert leak.note_ru
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assert has_cyrillic(leak.note_ru)
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