anti
8dd4c78b33
Rename the container-side logging module decnet_logging → syslog_bridge (canonical at templates/syslog_bridge.py, synced into each template by the deployer). Drop the stale per-template copies; setuptools find was picking them up anyway. Swap useradd/USER/chown "decnet" for "logrelay" so no obvious token appears in the rendered container image. Apply the same cloaking pattern to the telnet template that SSH got: syslog pipe moves to /run/systemd/journal/syslog-relay and the relay is cat'd via exec -a "systemd-journal-fwd". rsyslog.d conf rename 99-decnet.conf → 50-journal-forward.conf. SSH capture script: /var/decnet/captured → /var/lib/systemd/coredump (real systemd path), logger tag decnet-capture → systemd-journal. Compose volume updated to match the new in-container quarantine path. SD element ID shifts decnet@55555 → relay@55555; synced across collector, parser, sniffer, prober, formatter, tests, and docs so the host-side pipeline still matches what containers emit.
138 lines
4.6 KiB
Python
138 lines
4.6 KiB
Python
"""
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Tests for templates/mssql/server.py
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Covers the TDS pre-login / login7 happy path and regression tests for the
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zero-length pkt_len infinite-loop bug that was fixed (pkt_len < 8 guard).
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"""
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import importlib.util
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import struct
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import sys
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from unittest.mock import MagicMock
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import pytest
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from hypothesis import given, settings
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from hypothesis import strategies as st
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from .conftest import _FUZZ_SETTINGS, make_fake_syslog_bridge, run_with_timeout
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# ── Helpers ───────────────────────────────────────────────────────────────────
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def _load_mssql():
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for key in list(sys.modules):
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if key in ("mssql_server", "syslog_bridge"):
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del sys.modules[key]
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sys.modules["syslog_bridge"] = make_fake_syslog_bridge()
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spec = importlib.util.spec_from_file_location("mssql_server", "templates/mssql/server.py")
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mod = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(mod)
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return mod
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def _make_protocol(mod):
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proto = mod.MSSQLProtocol()
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transport = MagicMock()
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written: list[bytes] = []
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transport.write.side_effect = written.append
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transport.is_closing.return_value = False
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proto.connection_made(transport)
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return proto, transport, written
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def _tds_header(pkt_type: int, pkt_len: int) -> bytes:
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"""Build an 8-byte TDS packet header."""
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return struct.pack(">BBHBBBB", pkt_type, 0x01, pkt_len, 0x00, 0x00, 0x01, 0x00)
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def _prelogin_packet() -> bytes:
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header = _tds_header(0x12, 8)
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return header
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def _login7_packet() -> bytes:
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"""Minimal Login7 with 40-byte payload (username at offset 0, length 0)."""
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payload = b"\x00" * 40
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pkt_len = 8 + len(payload)
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header = _tds_header(0x10, pkt_len)
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return header + payload
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@pytest.fixture
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def mssql_mod():
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return _load_mssql()
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# ── Happy path ────────────────────────────────────────────────────────────────
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def test_prelogin_response_is_tds_type4(mssql_mod):
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proto, _, written = _make_protocol(mssql_mod)
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proto.data_received(_prelogin_packet())
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assert written, "expected a pre-login response"
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assert written[0][0] == 0x04
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def test_prelogin_response_length_matches_header(mssql_mod):
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proto, _, written = _make_protocol(mssql_mod)
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proto.data_received(_prelogin_packet())
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resp = b"".join(written)
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declared_len = struct.unpack(">H", resp[2:4])[0]
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assert declared_len == len(resp)
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def test_login7_auth_logged_and_closes(mssql_mod):
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proto, transport, written = _make_protocol(mssql_mod)
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proto.data_received(_prelogin_packet())
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written.clear()
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proto.data_received(_login7_packet())
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transport.close.assert_called()
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# error packet must be present
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assert any(b"\xaa" in chunk for chunk in written)
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def test_partial_header_waits_for_more_data(mssql_mod):
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proto, transport, _ = _make_protocol(mssql_mod)
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proto.data_received(b"\x12\x01")
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transport.close.assert_not_called()
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def test_connection_lost_does_not_raise(mssql_mod):
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proto, _, _ = _make_protocol(mssql_mod)
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proto.connection_lost(None)
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# ── Regression: zero / small pkt_len ─────────────────────────────────────────
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def test_zero_pkt_len_closes(mssql_mod):
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proto, transport, _ = _make_protocol(mssql_mod)
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# pkt_len = 0x0000 at bytes [2:4]
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data = b"\x12\x01\x00\x00\x00\x00\x01\x00"
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run_with_timeout(proto.data_received, data)
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transport.close.assert_called()
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def test_pkt_len_7_closes(mssql_mod):
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proto, transport, _ = _make_protocol(mssql_mod)
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# pkt_len = 7 (< 8 minimum)
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data = _tds_header(0x12, 7) + b"\x00"
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run_with_timeout(proto.data_received, data)
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transport.close.assert_called()
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def test_pkt_len_1_closes(mssql_mod):
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proto, transport, _ = _make_protocol(mssql_mod)
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data = _tds_header(0x12, 1) + b"\x00" * 7
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run_with_timeout(proto.data_received, data)
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transport.close.assert_called()
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# ── Fuzz ──────────────────────────────────────────────────────────────────────
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@pytest.mark.fuzz
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@given(data=st.binary(min_size=0, max_size=512))
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@settings(**_FUZZ_SETTINGS)
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def test_fuzz_arbitrary_bytes(data):
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mod = _load_mssql()
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proto, _, _ = _make_protocol(mod)
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run_with_timeout(proto.data_received, data)
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