416 lines
14 KiB
Python
416 lines
14 KiB
Python
"""
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Tests fuer Phase 15 (2026-08-21) -- Dateitransfer-500er, SSH-Wiedergabe-
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Haenger und Live-Mitschau aktiver Sitzungen.
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Drei voneinander unabhaengige Bugs/Features, gemeldet in derselben Session:
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1) Dateitransfer-Upload/-Download endete bei einem Fehler als nackter
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Klartext-500 ("Internal Server Error") statt JSON -- das Frontend crashte
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beim res.json() mit "Unexpected token 'I' ...". Zwei voneinander
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UNABHAENGIGE Ursachen in app/ssh_proxy/sftp.py:
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a) _log_transfer() wurde mit dem falschen Keyword-Argumentnamen
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aufgerufen (av_scan_result= statt av_result=) -- das feuerte bei
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JEDEM erfolgreichen Transfer, ausserhalb jedes try/except.
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b) except SSH_SETUP_ERRORS deckte nur Fehler VOR der Anmeldung ab;
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asyncssh.Error (echter Verbindungsfehler waehrend asyncssh.connect(),
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oder ein SFTP-Fehler NACH der Anmeldung wie SFTPPermissionDenied)
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lief unbehandelt durch.
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Siehe project memory: dateitransfer_upload_500_phase15.md.
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2) "SSH-Wiedergabe funktioniert nicht": static/js/admin.js dekodierte jeden
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aufgezeichneten output-Chunk einzeln ueber
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decodeURIComponent(escape(atob(...))) als JS-String. Ein Mehrbyte-UTF-8-
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Zeichen (Umlaute etc.), das GENAU an einer process.stdout.read()-
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Chunk-Grenze zerschnitten wurde, liess das an dieser Stelle mit
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"URI malformed" abstuerzen -- innerhalb eines try-losen setTimeout, was
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die gesamte Wiedergabe fuer immer haengen liess. Reiner JS-Bug (kein
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Python-Aequivalent hier direkt testbar) -- separat mit einem Node-Skript
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verifiziert (siehe Session-Notizen); dieser Testfall sichert stattdessen
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die BACKEND-Seite ab, die diesen Chunk ueberhaupt erst erzeugt.
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3) "Aktive Session kann man nicht mitschauen": neue read-only Live-Mitschau
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fuer Superadmins, GET /ws/sessions/{id}/watch (app/ssh_proxy/
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terminal_ws.py) + app/security/active_sessions.py (Beobachter-Queues pro
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Sitzung, dieselbe best-effort/put_nowait-Philosophie wie log_stream.py).
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"""
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from __future__ import annotations
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import base64
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import asyncssh
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import pytest
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from fastapi import HTTPException, WebSocketDisconnect
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from app.security import active_sessions
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from app.ssh_proxy import sftp as sftp_module
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from app.ssh_proxy import terminal_ws as terminal_ws_module
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class _FakeUser:
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def __init__(self, *, is_admin=True, id=1, username="admin"):
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self.is_admin = is_admin
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self.id = id
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self.username = username
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class _FakeConn:
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"""Minimaler aiosqlite-Ersatz fuer diese Tests -- genug fuer die
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INSERT/UPDATE/SELECT-Aufrufe aus sftp.py/terminal_ws.py, ohne echte
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SQLite-Semantik nachzubilden (das leisten test_phase8/9/12/13 bereits
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fuer die jeweils betroffenen Endpunkte)."""
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def __init__(self, select_result=None):
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self._select_result = select_result
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async def execute(self, sql, params=()):
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class _Cursor:
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lastrowid = 1
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async def fetchone(self_inner):
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return self._select_result
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return _Cursor()
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async def commit(self):
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pass
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# --------------------------------------------------------------------------
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# 1a) Regression: _log_transfer() muss mit dem PARAMETERNAMEN aufgerufen
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# werden, den es tatsaechlich definiert (av_result), nicht mit einem
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# Namen, der zufaellig plausibel klingt (av_scan_result). Ein erfolg-
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# reicher Transfer darf NIE eine TypeError werfen.
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# --------------------------------------------------------------------------
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async def test_upload_erfolgreicher_transfer_wirft_keine_typeerror(monkeypatch):
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fake_conn = _FakeConn()
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monkeypatch.setattr(sftp_module, "get_db", lambda: fake_conn)
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async def fake_write_audit_event(*a, **kw):
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pass
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monkeypatch.setattr(sftp_module, "write_audit_event", fake_write_audit_event)
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class _OkRemoteFile:
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async def __aenter__(self):
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return self
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async def __aexit__(self, *a):
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return False
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async def write(self, data):
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self.written = data
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class _OkSftp:
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async def __aenter__(self):
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return self
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async def __aexit__(self, *a):
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return False
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def open(self, path, mode):
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return _OkRemoteFile()
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class _OkSshConn:
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def start_sftp_client(self):
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return _OkSftp()
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def close(self):
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pass
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async def fake_connect_to_host(conn, host_id):
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return _OkSshConn()
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monkeypatch.setattr(sftp_module, "connect_to_host", fake_connect_to_host)
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request = sftp_module.Request()
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upload = sftp_module.UploadFile("test.txt", b"hallo welt")
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result = await sftp_module.upload_file(
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host_id=1, request=request, remote_path="/tmp/test.txt", file=upload,
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host={"file_transfer_enabled": True}, user=_FakeUser(),
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)
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assert result["status"] == "ok"
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assert result["size"] == len(b"hallo welt")
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# --------------------------------------------------------------------------
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# 1b) asyncssh.Error (Verbindungsfehler NACH SSH_SETUP_ERRORS-Pruefung, oder
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# ein SFTP-Fehler nach erfolgreicher Anmeldung) muss als HTTPException
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# ankommen -- NIE unbehandelt durchlaufen.
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# --------------------------------------------------------------------------
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async def test_upload_asyncssh_error_wird_zu_http_exception_400(monkeypatch):
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fake_conn = _FakeConn()
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monkeypatch.setattr(sftp_module, "get_db", lambda: fake_conn)
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async def fake_connect_to_host(conn, host_id):
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raise asyncssh.Error(reason="Connection refused")
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monkeypatch.setattr(sftp_module, "connect_to_host", fake_connect_to_host)
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request = sftp_module.Request()
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upload = sftp_module.UploadFile("test.txt", b"hallo welt")
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with pytest.raises(HTTPException) as excinfo:
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await sftp_module.upload_file(
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host_id=1, request=request, remote_path="/tmp/test.txt", file=upload,
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host={"file_transfer_enabled": True}, user=_FakeUser(),
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)
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assert excinfo.value.status_code == 400
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async def test_upload_sftp_permission_denied_wird_zu_http_exception_400(monkeypatch):
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"""SFTP-Fehler NACH erfolgreicher Anmeldung (z.B. Zielverzeichnis nicht
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vorhanden/keine Berechtigung) sind asyncssh.SFTPError -- eine Unterklasse
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von asyncssh.Error, KEINE der SSH_SETUP_ERRORS."""
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fake_conn = _FakeConn()
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monkeypatch.setattr(sftp_module, "get_db", lambda: fake_conn)
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class _DeniedSftp:
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async def __aenter__(self):
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return self
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async def __aexit__(self, *a):
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return False
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def open(self, path, mode):
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raise asyncssh.SFTPPermissionDenied(reason="Permission denied")
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class _SshConn:
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def start_sftp_client(self):
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return _DeniedSftp()
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def close(self):
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pass
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async def fake_connect_to_host(conn, host_id):
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return _SshConn()
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monkeypatch.setattr(sftp_module, "connect_to_host", fake_connect_to_host)
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request = sftp_module.Request()
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upload = sftp_module.UploadFile("test.txt", b"hallo welt")
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with pytest.raises(HTTPException) as excinfo:
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await sftp_module.upload_file(
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host_id=1, request=request, remote_path="/root/blocked.txt", file=upload,
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host={"file_transfer_enabled": True}, user=_FakeUser(),
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)
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assert excinfo.value.status_code == 400
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async def test_upload_unerwarteter_fehler_wird_zu_http_exception_500_nicht_unbehandelt(monkeypatch):
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"""Letztes Auffangnetz: selbst ein voellig unverwandter Bug (hier
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simuliert per AttributeError) darf NIE unbehandelt bis Starlettes
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Klartext-500 durchlaufen -- das Frontend braucht immer JSON."""
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fake_conn = _FakeConn()
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monkeypatch.setattr(sftp_module, "get_db", lambda: fake_conn)
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async def fake_connect_to_host(conn, host_id):
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raise AttributeError("simuliert einen unverwandten kuenftigen Bug")
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monkeypatch.setattr(sftp_module, "connect_to_host", fake_connect_to_host)
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request = sftp_module.Request()
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upload = sftp_module.UploadFile("test.txt", b"hallo welt")
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with pytest.raises(HTTPException) as excinfo:
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await sftp_module.upload_file(
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host_id=1, request=request, remote_path="/tmp/test.txt", file=upload,
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host={"file_transfer_enabled": True}, user=_FakeUser(),
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)
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assert excinfo.value.status_code == 500
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async def test_download_datei_zu_gross_bleibt_413_und_wird_nicht_zu_500(monkeypatch):
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"""Regressionsschutz fuer den neuen Catch-all: die bereits bestehende
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HTTPException(413) aus dem inneren try-Block darf NICHT vom neuen
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'except Exception' verschluckt und zu einem 500 umgemuenzt werden."""
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fake_conn = _FakeConn()
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monkeypatch.setattr(sftp_module, "get_db", lambda: fake_conn)
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class _Stat:
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size = sftp_module.MAX_UPLOAD_BYTES + 1
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class _HugeSftp:
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async def __aenter__(self):
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return self
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async def __aexit__(self, *a):
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return False
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async def stat(self, path):
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return _Stat()
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class _SshConn:
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def start_sftp_client(self):
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return _HugeSftp()
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def close(self):
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pass
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async def fake_connect_to_host(conn, host_id):
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return _SshConn()
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monkeypatch.setattr(sftp_module, "connect_to_host", fake_connect_to_host)
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request = sftp_module.Request()
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with pytest.raises(HTTPException) as excinfo:
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await sftp_module.download_file(
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host_id=1, request=request, remote_path="/tmp/huge.bin",
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host={"file_transfer_enabled": True}, user=_FakeUser(),
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)
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assert excinfo.value.status_code == 413
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# --------------------------------------------------------------------------
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# 3) Live-Mitschau: app/security/active_sessions.py Beobachter-Queues.
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# --------------------------------------------------------------------------
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async def test_active_sessions_broadcast_erreicht_alle_beobachter(event_loop=None):
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import asyncio
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task = asyncio.current_task()
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active_sessions.register(session_id=4242, task=task)
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try:
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q1 = active_sessions.add_watcher(4242)
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q2 = active_sessions.add_watcher(4242)
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assert q1 is not None and q2 is not None and q1 is not q2
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active_sessions.broadcast(4242, b"chunk-1")
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assert q1.get_nowait() == b"chunk-1"
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assert q2.get_nowait() == b"chunk-1"
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active_sessions.remove_watcher(4242, q1)
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active_sessions.broadcast(4242, b"chunk-2")
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assert q2.get_nowait() == b"chunk-2"
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assert q1.empty()
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finally:
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active_sessions.unregister(4242)
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async def test_active_sessions_add_watcher_auf_unbekannter_sitzung_gibt_none():
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assert active_sessions.get(999999) is None
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assert active_sessions.add_watcher(999999) is None
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# --------------------------------------------------------------------------
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# 3) Live-Mitschau: WS-Route -- Zugriffskontrolle + Frame-Weiterleitung.
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# --------------------------------------------------------------------------
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class _FakeWebSocket:
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def __init__(self):
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self.accepted = False
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self.sent = []
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self.closes = []
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self.client = type("C", (), {"host": "10.0.0.5"})()
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async def accept(self):
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self.accepted = True
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async def send_json(self, obj):
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self.sent.append(obj)
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async def close(self, code=1000, reason=""):
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self.closes.append((code, reason))
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async def test_watch_ssh_session_lehnt_nicht_admin_ab(monkeypatch):
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async def as_normal_user(ws):
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return _FakeUser(is_admin=False)
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monkeypatch.setattr(terminal_ws_module, "get_current_user_ws", as_normal_user)
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ws = _FakeWebSocket()
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await terminal_ws_module.watch_ssh_session(ws, 1)
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assert ws.closes == [(4403, "")]
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assert ws.accepted is False
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async def test_watch_ssh_session_lehnt_beendete_sitzung_ab(monkeypatch):
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async def as_admin(ws):
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return _FakeUser(is_admin=True)
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monkeypatch.setattr(terminal_ws_module, "get_current_user_ws", as_admin)
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monkeypatch.setattr(
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terminal_ws_module, "get_db",
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lambda: _FakeConn(select_result=("ssh", "2026-08-21T10:00:00Z")),
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)
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ws = _FakeWebSocket()
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await terminal_ws_module.watch_ssh_session(ws, 1)
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assert ws.closes == [(4404, "")]
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assert ws.accepted is False
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async def test_watch_ssh_session_lehnt_rdp_ab(monkeypatch):
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async def as_admin(ws):
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return _FakeUser(is_admin=True)
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monkeypatch.setattr(terminal_ws_module, "get_current_user_ws", as_admin)
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monkeypatch.setattr(
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terminal_ws_module, "get_db", lambda: _FakeConn(select_result=("rdp", None))
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)
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ws = _FakeWebSocket()
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await terminal_ws_module.watch_ssh_session(ws, 1)
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assert ws.closes == [(4404, "")]
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assert ws.accepted is False
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async def test_watch_ssh_session_leitet_frames_weiter_und_raeumt_beobachter_auf(monkeypatch):
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import asyncio
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async def as_admin(ws):
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return _FakeUser(is_admin=True)
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monkeypatch.setattr(terminal_ws_module, "get_current_user_ws", as_admin)
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monkeypatch.setattr(
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terminal_ws_module, "get_db", lambda: _FakeConn(select_result=("ssh", None))
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)
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audit_calls = []
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async def fake_write_audit_event(conn, **kw):
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audit_calls.append(kw)
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monkeypatch.setattr(terminal_ws_module, "write_audit_event", fake_write_audit_event)
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active_sessions.register(session_id=1, task=asyncio.current_task())
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try:
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class _WsThenDisconnect(_FakeWebSocket):
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def __init__(self):
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super().__init__()
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self._n = 0
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async def send_json(self, obj):
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await super().send_json(obj)
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self._n += 1
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if self._n >= 2:
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raise WebSocketDisconnect()
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ws = _WsThenDisconnect()
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async def feeder():
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await asyncio.sleep(0.01)
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active_sessions.broadcast(1, b"frame-1")
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await asyncio.sleep(0.01)
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active_sessions.broadcast(1, b"frame-2")
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feeder_task = asyncio.create_task(feeder())
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await terminal_ws_module.watch_ssh_session(ws, 1)
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await feeder_task
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assert ws.accepted is True
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assert [f["data"] for f in ws.sent] == [
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base64.b64encode(b"frame-1").decode(),
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base64.b64encode(b"frame-2").decode(),
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]
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# Beobachter muss nach dem Trennen entfernt sein (kein Leak).
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assert len(active_sessions.get(1).watchers) == 0
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assert len(audit_calls) == 1
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assert audit_calls[0]["event_type"] == "session_watch_started"
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finally:
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active_sessions.unregister(1)
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