Implement OAuth2 security test coverage#862
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Signed-off-by: Eric Evans <194135482+ericevans-nv@users.noreply.github.com>
WalkthroughRefines OAuth2 error handling across console, FastAPI (websocket & plugin) handlers and the token refresh provider; adds helper for building authorization URLs with PKCE, exposes an in-process redirect app field, and introduces extensive OAuth security and expiry tests. Changes
Sequence Diagram(s)sequenceDiagram
autonumber
actor User
participant Console as ConsoleAuthFlow
participant Browser
participant OAuth as AuthServer
participant Redirect as RedirectApp
Note over Console: start authenticate()
Console->>Console: create_oauth_client()
alt client creation fails
Console-->>User: raise/propagate error
else
Console->>Console: _create_authorization_url(state, PKCE?)
alt url creation fails
Console-->>User: RuntimeError
else
Console->>Browser: open(auth URL) (guarded)
Browser->>OAuth: authorize
OAuth-->>Redirect: redirect with code/state
Redirect->>Redirect: exchange code -> token
alt OAuthError
Redirect-->>Console: set flow future exception (RuntimeError OAuth)
else httpx.HTTPError
Redirect-->>Console: set flow future exception (RuntimeError network)
else other error
Redirect-->>Console: set flow future exception (RuntimeError)
else success
Redirect-->>Console: set flow future result (tokens)
end
Console-->>User: return result or error
end
end
sequenceDiagram
autonumber
participant WSClient as WS Client
participant WSFlow as WebSocketFlowHandler
participant OAuth as AuthServer
participant Redirect as PluginRedirect
WSClient->>WSFlow: initiate flow
WSFlow->>WSFlow: create_oauth_client()
alt invalid config / error
WSFlow-->>WSClient: RuntimeError (wrapped)
else
WSFlow->>WSFlow: _create_authorization_url()
alt failure
WSFlow-->>WSClient: RuntimeError
else
WSFlow->>OAuth: authorize
OAuth-->>Redirect: callback -> code/state
Redirect->>Redirect: token exchange
alt OAuthError / httpx / other
Redirect-->>WSFlow: set exception (RuntimeError)
else success
Redirect-->>WSFlow: set result (tokens)
end
WSFlow-->>WSClient: result or error (timeout preserved)
end
end
sequenceDiagram
autonumber
participant Provider as OAuth2AuthCodeFlowProvider
participant TokenAS as TokenEndpoint
Note over Provider: _attempt_token_refresh()
Provider->>TokenAS: POST /token (refresh_token)
alt httpx.HTTPStatusError or httpx.RequestError
Provider-->>Provider: return None
else other Exception
Provider-->>Provider: return None
else success
Provider-->>Provider: return refreshed token
end
Estimated code review effort🎯 4 (Complex) | ⏱️ ~60 minutes Suggested labelsimprovement, tests, security Pre-merge checks and finishing touches❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
✨ Finishing touches
🧪 Generate unit tests
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⚠️ Outside diff range comments (2)
tests/nat/front_ends/auth_flow_handlers/test_console_flow_handler.py (1)
164-199: Console error test asserts the wrong exception type
ConsoleAuthenticationFlowHandler.construct_oauth_clientnow wrapsOAuthError/ValueError/TypeErrorand re-raises aRuntimeError(seesrc/nat/front_ends/console/authentication_flow_handler.py, Line 90-109). This test instead hardcodes aValueErrorexpectation, effectively locking in the inconsistent behavior we just removed. If we exercise the real implementation (without the override), the test will fail because the handler correctly surfaces aRuntimeError. Please update the test to drive the production path (patch theAsyncOAuth2Clientconstructor to raise) and assert the wrappedRuntimeErrormessage.Apply this diff to align the test with the production behavior:
-async def test_console_oauth2_flow_error_handling(monkeypatch, mock_server): - """Test that Console flow does NOT convert OAuth client creation errors to RuntimeError (inconsistent behavior).""" - - # Create a handler that will fail during OAuth client construction - class _FailingTestHandler(ConsoleAuthenticationFlowHandler): - - def __init__(self): - super().__init__() - - def construct_oauth_client(self, cfg): - # Force a failure during OAuth client creation - raise ValueError("Invalid OAuth client configuration") - - cfg = OAuth2AuthCodeFlowProviderConfig( +async def test_console_oauth2_flow_error_handling(monkeypatch): + """Console flow should surface OAuth client construction failures as RuntimeError (matches other front-ends).""" + + cfg = OAuth2AuthCodeFlowProviderConfig( client_id="test_client", client_secret="test_secret", authorization_url="http://testserver/oauth/authorize", token_url="http://testserver/oauth/token", scopes=["read"], use_pkce=True, redirect_uri="http://localhost:8000/auth/redirect", ) - handler = _FailingTestHandler() + handler = ConsoleAuthenticationFlowHandler() + + class _ExplodingAsyncOAuth2Client: # pragma: no cover - simple test double + + def __init__(self, *args, **kwargs): + raise ValueError("Invalid OAuth client configuration") monkeypatch.setattr("webbrowser.open", lambda *_: None, raising=True) # Don't actually open browser monkeypatch.setattr("click.echo", lambda *_: None, raising=True) # silence CLI + monkeypatch.setattr( + "nat.front_ends.console.authentication_flow_handler.AsyncOAuth2Client", + _ExplodingAsyncOAuth2Client, + raising=True, + ) - # Assert that ValueError is raised (NOT converted to RuntimeError - demonstrates inconsistent error handling) - with pytest.raises(ValueError) as exc_info: + # Assert that the handler now raises RuntimeError with the wrapped message. + with pytest.raises(RuntimeError) as exc_info: await handler.authenticate(cfg, AuthFlowType.OAUTH2_AUTHORIZATION_CODE) # Verify the error message contains the original exception information error_message = str(exc_info.value) - assert "Invalid OAuth client configuration" in error_message + assert "Invalid OAuth2 configuration" in error_messagetests/nat/front_ends/auth_flow_handlers/test_websocket_flow_handler.py (1)
181-223: WebSocket error test currently stalls for 5 minutes
WebSocketAuthenticationFlowHandler._handle_oauth2_auth_code_flowwaits onasyncio.wait_for(..., timeout=300). In this test no token ever arrives, so we literally sleep five minutes beforeasyncio.TimeoutErrorfires. Besides blowing up suite runtime, it still doesn’t exercise the intended error path (OAuth client construction wrapping). Please force the constructor to fail and assert the wrappedRuntimeErrorimmediately, just like the console test.Apply this diff to avoid the 5-minute stall and verify the real failure mode:
-@pytest.mark.usefixtures("set_nat_config_file_env_var") -async def test_websocket_oauth2_flow_error_handling(monkeypatch, mock_server, tmp_path): - """Test that WebSocket flow does convert OAuth client creation errors to RuntimeError (consistent behavior).""" +@pytest.mark.usefixtures("set_nat_config_file_env_var") +async def test_websocket_oauth2_flow_error_handling(monkeypatch, tmp_path): + """WebSocket flow should surface OAuth client construction failures as RuntimeError (consistent with console).""" cfg_nat = Config(workflow=EchoFunctionConfig()) worker = FastApiFrontEndPluginWorker(cfg_nat) # Dummy WebSocket handler class _DummyWSHandler: @@ - # Use a config that will pass pydantic validation but fail OAuth client creation cfg_flow = OAuth2AuthCodeFlowProviderConfig( client_id="", # Empty string passes pydantic but may cause OAuth client errors client_secret="", # Empty strings should trigger error handling authorization_url="http://testserver/oauth/authorize", token_url="http://testserver/oauth/token", scopes=["read"], use_pkce=True, redirect_uri="http://localhost:8000/auth/redirect", ) monkeypatch.setattr("click.echo", lambda *_: None, raising=True) - # This test demonstrates the WebSocket flow does have timeout protection (RuntimeError after 5 minutes) - # but the OAuth client creation with empty strings doesn't actually fail as expected + class _ExplodingAsyncOAuth2Client: + + def __init__(self, *args, **kwargs): + raise ValueError("Invalid OAuth client configuration") + + monkeypatch.setattr( + "nat.front_ends.fastapi.auth_flow_handlers.websocket_flow_handler.AsyncOAuth2Client", + _ExplodingAsyncOAuth2Client, + raising=True, + ) + with pytest.raises(RuntimeError) as exc_info: await ws_handler.authenticate(cfg_flow, AuthFlowType.OAUTH2_AUTHORIZATION_CODE) - # Verify timeout RuntimeError is raised (demonstrates partial error handling) error_message = str(exc_info.value) - assert "Authentication flow timed out" in error_message + assert "Invalid OAuth2 configuration" in error_message
🧹 Nitpick comments (3)
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py (1)
62-69: Log refresh failures instead of swallowing them silently.Every branch in the
tryblock returnsNone, but nothing gets logged. When refreshes start failing in production we will have zero signal, which makes diagnosing auth regressions painful. Please emit a warning (with context likeuser_id) before returning so we have breadcrumbs in the logs.try: with AuthlibOAuth2Client( client_id=self.config.client_id, client_secret=self.config.client_secret, ) as client: new_token_data = client.refresh_token(self.config.token_url, refresh_token=refresh_token) @@ - except httpx.HTTPStatusError: - return None - except httpx.RequestError: - return None - except Exception: - # On any other failure, we'll fall back to the full auth flow. - return None + except httpx.HTTPStatusError: + logger.warning("HTTP %s while refreshing token for user %s; falling back to full auth flow.", + "HTTPStatusError", user_id) + return None + except httpx.RequestError as exc: + logger.warning("Network error while refreshing token for user %s: %s", user_id, exc) + return None + except Exception as exc: + # On any other failure, we'll fall back to the full auth flow. + logger.exception("Unexpected error while refreshing token for user %s", user_id) + return Nonesrc/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (1)
1078-1083: Surface redirect failures in logs before returning success HTML.We now map OAuth/httpx/other exceptions into
RuntimeErrors on the flow future, but we never log the underlying reason. When redirects fail we will still render the success HTML and silently drop the stack trace, which makes production debugging very hard. Please log each branch (OAuth, network, generic) before setting the exception so operators can correlate failures.- except OAuthError as e: - flow_state.future.set_exception( - RuntimeError(f"Authorization server rejected request: {e.error} ({e.description})")) - except httpx.HTTPError as e: - flow_state.future.set_exception(RuntimeError(f"Network error during token fetch: {e}")) - except Exception as e: - flow_state.future.set_exception(RuntimeError(f"Authentication failed: {e}")) + except OAuthError as e: + logger.warning("OAuth error during token fetch for state %s: %s (%s)", state, e.error, e.description) + flow_state.future.set_exception( + RuntimeError(f"Authorization server rejected request: {e.error} ({e.description})")) + except httpx.HTTPError as e: + logger.warning("Network error during token fetch for state %s: %s", state, e) + flow_state.future.set_exception(RuntimeError(f"Network error during token fetch: {e}")) + except Exception as e: + logger.exception("Unexpected authentication failure during token fetch for state %s", state) + flow_state.future.set_exception(RuntimeError(f"Authentication failed: {e}"))src/nat/front_ends/console/authentication_flow_handler.py (1)
116-117: Use explicit union types for optional parametersPer our typing guidelines and Ruff’s RUF013 hint, please spell optional parameters with explicit unions (
str | None) instead of relying on an implicit Optional.- verifier: str = None, - challenge: str = None) -> str: + verifier: str | None = None, + challenge: str | None = None) -> str:
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📒 Files selected for processing (8)
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py(3 hunks)src/nat/front_ends/console/authentication_flow_handler.py(9 hunks)src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py(3 hunks)src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py(2 hunks)tests/nat/authentication/test_bearer_token_validator.py(2 hunks)tests/nat/front_ends/auth_flow_handlers/test_console_flow_handler.py(1 hunks)tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py(1 hunks)tests/nat/front_ends/auth_flow_handlers/test_websocket_flow_handler.py(2 hunks)
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🧬 Code graph analysis (7)
tests/nat/authentication/test_bearer_token_validator.py (1)
src/nat/authentication/credential_validator/bearer_token_validator.py (1)
verify(111-137)
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py (3)
tests/nat/front_ends/auth_flow_handlers/test_websocket_flow_handler.py (3)
create_oauth_client(52-66)create_websocket_message(116-143)create_websocket_message(193-194)src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (2)
config(122-123)redirect_uri(1050-1089)src/nat/front_ends/console/authentication_flow_handler.py (1)
_create_authorization_url(112-141)
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py (2)
src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (1)
redirect_uri(1050-1089)tests/nat/front_ends/auth_flow_handlers/test_console_flow_handler.py (1)
mock_server(77-81)
tests/nat/front_ends/auth_flow_handlers/test_console_flow_handler.py (1)
src/nat/front_ends/console/authentication_flow_handler.py (2)
construct_oauth_client(91-110)authenticate(75-88)
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py (1)
src/nat/data_models/authentication.py (2)
AuthResult(200-251)BearerTokenCred(158-165)
tests/nat/front_ends/auth_flow_handlers/test_websocket_flow_handler.py (2)
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py (3)
create_oauth_client(66-78)WebSocketAuthenticationFlowHandler(48-143)authenticate(59-64)src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (4)
config(122-123)redirect_uri(1050-1089)_add_flow(1099-1101)_remove_flow(1103-1105)
src/nat/front_ends/console/authentication_flow_handler.py (2)
src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (2)
redirect_uri(1050-1089)config(122-123)src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py (1)
_create_authorization_url(80-109)
🪛 Ruff (0.13.1)
src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
1082-1082: Do not catch blind exception: Exception
(BLE001)
tests/nat/authentication/test_bearer_token_validator.py
336-336: Possible hardcoded password assigned to: "token"
(S105)
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py
76-76: Avoid specifying long messages outside the exception class
(TRY003)
78-78: Avoid specifying long messages outside the exception class
(TRY003)
84-84: PEP 484 prohibits implicit Optional
Convert to T | None
(RUF013)
85-85: PEP 484 prohibits implicit Optional
Convert to T | None
(RUF013)
107-107: Consider moving this statement to an else block
(TRY300)
109-109: Avoid specifying long messages outside the exception class
(TRY003)
135-135: Avoid specifying long messages outside the exception class
(TRY003)
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py
36-36: Possible hardcoded password assigned to argument: "client_secret"
(S106)
38-38: Possible hardcoded password assigned to argument: "token_url"
(S106)
159-159: String contains ambiguous е (CYRILLIC SMALL LETTER IE). Did you mean e (LATIN SMALL LETTER E)?
(RUF001)
160-160: String contains ambiguous е (CYRILLIC SMALL LETTER IE). Did you mean e (LATIN SMALL LETTER E)?
(RUF001)
194-194: Unused method argument: attack_description
(ARG002)
370-370: Unpacked variable returned_state is never used
Prefix it with an underscore or any other dummy variable pattern
(RUF059)
420-420: Unused method argument: test_case_name
(ARG002)
456-456: Create your own exception
(TRY002)
456-456: Avoid specifying long messages outside the exception class
(TRY003)
488-488: Unused function argument: description
(ARG001)
572-572: Possible hardcoded password assigned to argument: "client_secret"
(S106)
603-603: Unpacked variable state is never used
Prefix it with an underscore or any other dummy variable pattern
(RUF059)
tests/nat/front_ends/auth_flow_handlers/test_console_flow_handler.py
164-164: Unused function argument: mock_server
(ARG001)
173-173: Unused method argument: cfg
(ARG002)
175-175: Avoid specifying long messages outside the exception class
(TRY003)
179-179: Possible hardcoded password assigned to argument: "client_secret"
(S106)
181-181: Possible hardcoded password assigned to argument: "token_url"
(S106)
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
67-67: Do not catch blind exception: Exception
(BLE001)
tests/nat/front_ends/auth_flow_handlers/test_websocket_flow_handler.py
181-181: Unused function argument: mock_server
(ARG001)
181-181: Unused function argument: tmp_path
(ARG001)
207-207: Possible hardcoded password assigned to argument: "token_url"
(S106)
src/nat/front_ends/console/authentication_flow_handler.py
106-106: Consider moving this statement to an else block
(TRY300)
108-108: Avoid specifying long messages outside the exception class
(TRY003)
110-110: Avoid specifying long messages outside the exception class
(TRY003)
116-116: PEP 484 prohibits implicit Optional
Convert to T | None
(RUF013)
117-117: PEP 484 prohibits implicit Optional
Convert to T | None
(RUF013)
139-139: Consider moving this statement to an else block
(TRY300)
141-141: Avoid specifying long messages outside the exception class
(TRY003)
195-195: Do not catch blind exception: Exception
(BLE001)
202-202: Avoid specifying long messages outside the exception class
(TRY003)
223-223: Docstring contains ambiguous ‑ (NON-BREAKING HYPHEN). Did you mean - (HYPHEN-MINUS)?
(RUF002)
246-246: Do not catch blind exception: Exception
(BLE001)
278-278: Docstring contains ambiguous ‑ (NON-BREAKING HYPHEN). Did you mean - (HYPHEN-MINUS)?
(RUF002)
ericevans-nv
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src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (2)
191-206: Fix filter removal: current code leaks a new filter per request.You add and remove different
LogFilterinstances; the one added is never removed, degrading observability over time.Apply this diff:
async def _suppress_authentication_logs(self, request: Request, call_next: Callable[[Request], Awaitable[Response]]) -> Response: """ - Intercepts authentication request and supreses logs that contain sensitive data. + Intercepts authentication request and suppresses logs that contain sensitive data. """ from nat.utils.log_utils import LogFilter logs_to_suppress: list[str] = [] if (self.front_end_config.oauth2_callback_path): logs_to_suppress.append(self.front_end_config.oauth2_callback_path) - logging.getLogger("uvicorn.access").addFilter(LogFilter(logs_to_suppress)) + uvicorn_logger = logging.getLogger("uvicorn.access") + log_filter = LogFilter(logs_to_suppress) + uvicorn_logger.addFilter(log_filter) try: response = await call_next(request) finally: - logging.getLogger("uvicorn.access").removeFilter(LogFilter(logs_to_suppress)) + uvicorn_logger.removeFilter(log_filter) return responseAs per coding guidelines
1061-1067: Makestatesingle-use with atomic pop and return 400 on invalid state.Reading without removal allows replay; pop under lock enforces one-time use and mitigates CSRF replay attempts.
Apply this diff:
async with self._outstanding_flows_lock: - if not state or state not in self._outstanding_flows: - return "Invalid state. Please restart the authentication process." - - flow_state = self._outstanding_flows[state] + if not state or state not in self._outstanding_flows: + from fastapi.responses import HTMLResponse + return HTMLResponse( + content="Invalid state. Please restart the authentication process.", + status_code=400, + headers={"Content-Type": "text/plain; charset=utf-8", "Cache-Control": "no-store, max-age=0, must-revalidate"}, + ) + + # One-time use: remove state atomically to prevent replay. + flow_state = self._outstanding_flows.pop(state)As per coding guidelines
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src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (3)
40-42: Catch the concrete Authlib OAuth2 error type.Catching
OAuth2Errorensures.errorand.descriptionfields are present and avoids attribute surprises across Authlib versions.Apply this diff:
-import httpx -from authlib.common.errors import AuthlibBaseError as OAuthError +import httpx +from authlib.oauth2.rfc6749.errors import OAuth2Error as OAuthErrorBased on learnings
1085-1089: Harden caching policy on the auth callback page.Use
Cache-Control: no-store, max-age=0, must-revalidateto prevent intermediaries from storing the page.Apply this diff:
return HTMLResponse(content=AUTH_REDIRECT_SUCCESS_HTML, status_code=200, headers={ - "Content-Type": "text/html; charset=utf-8", "Cache-Control": "no-cache" + "Content-Type": "text/html; charset=utf-8", + "Cache-Control": "no-store, max-age=0, must-revalidate", })If tests assert the exact header value, adjust expectations accordingly.
1045-1045: Add explicit return type annotation.Annotate the coroutine to return
Nonefor consistency with our typing guidance.Apply this diff:
- async def add_authorization_route(self, app: FastAPI): + async def add_authorization_route(self, app: FastAPI) -> None:As per coding guidelines
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Follow PEP 20 and PEP 8; run yapf with column_limit=120; use 4-space indentation; end files with a single trailing newline
Run ruff check --fix as linter (not formatter) using pyproject.toml config; fix warnings unless explicitly ignored
Respect naming: snake_case for functions/variables, PascalCase for classes, UPPER_CASE for constants
Treat pyright warnings as errors during development
Exception handling: use bare raise to re-raise; log with logger.error() when re-raising to avoid duplicate stack traces; use logger.exception() when catching without re-raising
Provide Google-style docstrings for every public module, class, function, and CLI command; first line concise and ending with a period; surround code entities with backticks
Validate and sanitize all user input, especially in web or CLI interfaces
Prefer httpx with SSL verification enabled by default and follow OWASP Top-10 recommendations
Use async/await for I/O-bound work; profile CPU-heavy paths with cProfile or mprof before optimizing; cache expensive computations with functools.lru_cache or external cache; leverage NumPy vectorized operations when beneficial
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PEP 20 and
PEP 8 for style guidelines.- Check for security vulnerabilities and potential issues. - Python methods should use type hints for all parameters and return values.
Example:def my_function(param1: int, param2: str) -> bool: pass- For Python exception handling, ensure proper stack trace preservation:
- When re-raising exceptions: use bare
raisestatements to maintain the original stack trace,
and uselogger.error()(notlogger.exception()) to avoid duplicate stack trace output.- When catching and logging exceptions without re-raising: always use
logger.exception()
to capture the full stack trace information.Documentation Review Instructions - Verify that documentation and comments are clear and comprehensive. - Verify that the documentation doesn't contain any TODOs, FIXMEs or placeholder text like "lorem ipsum". - Verify that the documentation doesn't contain any offensive or outdated terms. - Verify that documentation and comments are free of spelling mistakes, ensure the documentation doesn't contain any
words listed in the
ci/vale/styles/config/vocabularies/nat/reject.txtfile, words that might appear to be
spelling mistakes but are listed in theci/vale/styles/config/vocabularies/nat/accept.txtfile are OK.Misc. - All code (except .mdc files that contain Cursor rules) should be licensed under the Apache License 2.0,
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**/*.{py,yaml,yml}
📄 CodeRabbit inference engine (.cursor/rules/nat-test-llm.mdc)
**/*.{py,yaml,yml}: Configure response_seq as a list of strings; values cycle per call, and [] yields an empty string.
Configure delay_ms to inject per-call artificial latency in milliseconds for nat_test_llm.
Files:
src/nat/front_ends/console/authentication_flow_handler.py
**/*.py
📄 CodeRabbit inference engine (.cursor/rules/nat-test-llm.mdc)
**/*.py: Programmatic use: create TestLLMConfig(response_seq=[...], delay_ms=...), add with builder.add_llm("", cfg).
When retrieving the test LLM wrapper, use builder.get_llm(name, wrapper_type=LLMFrameworkEnum.) and call the framework’s method (e.g., ainvoke, achat, call).
**/*.py: In code comments/identifiers use NAT abbreviations as specified: nat for API namespace/CLI, nvidia-nat for package name, NAT for env var prefixes; do not use these abbreviations in documentation
Follow PEP 20 and PEP 8; run yapf with column_limit=120; use 4-space indentation; end files with a single trailing newline
Run ruff check --fix as linter (not formatter) using pyproject.toml config; fix warnings unless explicitly ignored
Respect naming: snake_case for functions/variables, PascalCase for classes, UPPER_CASE for constants
Treat pyright warnings as errors during development
Exception handling: use bare raise to re-raise; log with logger.error() when re-raising to avoid duplicate stack traces; use logger.exception() when catching without re-raising
Provide Google-style docstrings for every public module, class, function, and CLI command; first line concise and ending with a period; surround code entities with backticks
Validate and sanitize all user input, especially in web or CLI interfaces
Prefer httpx with SSL verification enabled by default and follow OWASP Top-10 recommendations
Use async/await for I/O-bound work; profile CPU-heavy paths with cProfile or mprof before optimizing; cache expensive computations with functools.lru_cache or external cache; leverage NumPy vectorized operations when beneficial
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src/nat/front_ends/console/authentication_flow_handler.py
⚙️ CodeRabbit configuration file
This directory contains the core functionality of the toolkit. Changes should prioritize backward compatibility.
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**/*
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**/*: # Code Review Instructions
- Ensure the code follows best practices and coding standards. - For Python code, follow
PEP 20 and
PEP 8 for style guidelines.- Check for security vulnerabilities and potential issues. - Python methods should use type hints for all parameters and return values.
Example:def my_function(param1: int, param2: str) -> bool: pass- For Python exception handling, ensure proper stack trace preservation:
- When re-raising exceptions: use bare
raisestatements to maintain the original stack trace,
and uselogger.error()(notlogger.exception()) to avoid duplicate stack trace output.- When catching and logging exceptions without re-raising: always use
logger.exception()
to capture the full stack trace information.Documentation Review Instructions - Verify that documentation and comments are clear and comprehensive. - Verify that the documentation doesn't contain any TODOs, FIXMEs or placeholder text like "lorem ipsum". - Verify that the documentation doesn't contain any offensive or outdated terms. - Verify that documentation and comments are free of spelling mistakes, ensure the documentation doesn't contain any
words listed in the
ci/vale/styles/config/vocabularies/nat/reject.txtfile, words that might appear to be
spelling mistakes but are listed in theci/vale/styles/config/vocabularies/nat/accept.txtfile are OK.Misc. - All code (except .mdc files that contain Cursor rules) should be licensed under the Apache License 2.0,
and should contain an Apache License 2.0 header comment at the top of each file.
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src/nat/front_ends/console/authentication_flow_handler.py (2)
src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (2)
redirect_uri(1050-1089)config(122-123)src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py (1)
_create_authorization_url(80-109)
🪛 Ruff (0.13.1)
src/nat/front_ends/console/authentication_flow_handler.py
106-106: Consider moving this statement to an else block
(TRY300)
108-108: Avoid specifying long messages outside the exception class
(TRY003)
110-110: Avoid specifying long messages outside the exception class
(TRY003)
116-116: PEP 484 prohibits implicit Optional
Convert to T | None
(RUF013)
117-117: PEP 484 prohibits implicit Optional
Convert to T | None
(RUF013)
139-139: Consider moving this statement to an else block
(TRY300)
141-141: Avoid specifying long messages outside the exception class
(TRY003)
195-195: Do not catch blind exception: Exception
(BLE001)
202-202: Avoid specifying long messages outside the exception class
(TRY003)
223-223: Docstring contains ambiguous ‑ (NON-BREAKING HYPHEN). Did you mean - (HYPHEN-MINUS)?
(RUF002)
248-248: Do not catch blind exception: Exception
(BLE001)
281-281: Docstring contains ambiguous ‑ (NON-BREAKING HYPHEN). Did you mean - (HYPHEN-MINUS)?
(RUF002)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
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Signed-off-by: Eric Evans <194135482+ericevans-nv@users.noreply.github.com>
…auth-security-test-suite
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src/nat/front_ends/console/authentication_flow_handler.py (1)
60-62: Replace the non-breaking hyphen to satisfy lint.The bullet still uses a non-breaking hyphen (
Authorization‑Code), which ruff flags as RUF002. Swap it for a plain ASCII hyphen so the docstring passes lint.- • OAuth 2 Authorization‑Code with optional PKCE + • OAuth 2 Authorization-Code with optional PKCEAs per coding guidelines.
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**/*.{py,yaml,yml}
📄 CodeRabbit inference engine (.cursor/rules/nat-test-llm.mdc)
**/*.{py,yaml,yml}: Configure response_seq as a list of strings; values cycle per call, and [] yields an empty string.
Configure delay_ms to inject per-call artificial latency in milliseconds for nat_test_llm.
Files:
src/nat/front_ends/console/authentication_flow_handler.py
**/*.py
📄 CodeRabbit inference engine (.cursor/rules/nat-test-llm.mdc)
**/*.py: Programmatic use: create TestLLMConfig(response_seq=[...], delay_ms=...), add with builder.add_llm("", cfg).
When retrieving the test LLM wrapper, use builder.get_llm(name, wrapper_type=LLMFrameworkEnum.) and call the framework’s method (e.g., ainvoke, achat, call).
**/*.py: In code comments/identifiers use NAT abbreviations as specified: nat for API namespace/CLI, nvidia-nat for package name, NAT for env var prefixes; do not use these abbreviations in documentation
Follow PEP 20 and PEP 8; run yapf with column_limit=120; use 4-space indentation; end files with a single trailing newline
Run ruff check --fix as linter (not formatter) using pyproject.toml config; fix warnings unless explicitly ignored
Respect naming: snake_case for functions/variables, PascalCase for classes, UPPER_CASE for constants
Treat pyright warnings as errors during development
Exception handling: use bare raise to re-raise; log with logger.error() when re-raising to avoid duplicate stack traces; use logger.exception() when catching without re-raising
Provide Google-style docstrings for every public module, class, function, and CLI command; first line concise and ending with a period; surround code entities with backticks
Validate and sanitize all user input, especially in web or CLI interfaces
Prefer httpx with SSL verification enabled by default and follow OWASP Top-10 recommendations
Use async/await for I/O-bound work; profile CPU-heavy paths with cProfile or mprof before optimizing; cache expensive computations with functools.lru_cache or external cache; leverage NumPy vectorized operations when beneficial
Files:
src/nat/front_ends/console/authentication_flow_handler.py
src/**/*.py
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Files:
src/nat/front_ends/console/authentication_flow_handler.py
src/nat/**/*
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Files:
src/nat/front_ends/console/authentication_flow_handler.py
⚙️ CodeRabbit configuration file
This directory contains the core functionality of the toolkit. Changes should prioritize backward compatibility.
Files:
src/nat/front_ends/console/authentication_flow_handler.py
{src/**/*.py,packages/*/src/**/*.py}
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
All public APIs must have Python 3.11+ type hints on parameters and return values; prefer typing/collections.abc abstractions; use typing.Annotated when useful
Files:
src/nat/front_ends/console/authentication_flow_handler.py
**/*
⚙️ CodeRabbit configuration file
**/*: # Code Review Instructions
- Ensure the code follows best practices and coding standards. - For Python code, follow
PEP 20 and
PEP 8 for style guidelines.- Check for security vulnerabilities and potential issues. - Python methods should use type hints for all parameters and return values.
Example:def my_function(param1: int, param2: str) -> bool: pass- For Python exception handling, ensure proper stack trace preservation:
- When re-raising exceptions: use bare
raisestatements to maintain the original stack trace,
and uselogger.error()(notlogger.exception()) to avoid duplicate stack trace output.- When catching and logging exceptions without re-raising: always use
logger.exception()
to capture the full stack trace information.Documentation Review Instructions - Verify that documentation and comments are clear and comprehensive. - Verify that the documentation doesn't contain any TODOs, FIXMEs or placeholder text like "lorem ipsum". - Verify that the documentation doesn't contain any offensive or outdated terms. - Verify that documentation and comments are free of spelling mistakes, ensure the documentation doesn't contain any
words listed in the
ci/vale/styles/config/vocabularies/nat/reject.txtfile, words that might appear to be
spelling mistakes but are listed in theci/vale/styles/config/vocabularies/nat/accept.txtfile are OK.Misc. - All code (except .mdc files that contain Cursor rules) should be licensed under the Apache License 2.0,
and should contain an Apache License 2.0 header comment at the top of each file.
- Confirm that copyright years are up-to date whenever a file is changed.
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src/nat/front_ends/console/authentication_flow_handler.py (2)
src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (2)
redirect_uri(1050-1089)config(122-123)src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py (1)
_create_authorization_url(80-109)
🪛 Ruff (0.13.1)
src/nat/front_ends/console/authentication_flow_handler.py
106-106: Consider moving this statement to an else block
(TRY300)
108-108: Avoid specifying long messages outside the exception class
(TRY003)
110-110: Avoid specifying long messages outside the exception class
(TRY003)
139-139: Consider moving this statement to an else block
(TRY300)
141-141: Avoid specifying long messages outside the exception class
(TRY003)
195-195: Do not catch blind exception: Exception
(BLE001)
202-202: Avoid specifying long messages outside the exception class
(TRY003)
223-223: Docstring contains ambiguous ‑ (NON-BREAKING HYPHEN). Did you mean - (HYPHEN-MINUS)?
(RUF002)
248-248: Do not catch blind exception: Exception
(BLE001)
281-281: Docstring contains ambiguous ‑ (NON-BREAKING HYPHEN). Did you mean - (HYPHEN-MINUS)?
(RUF002)
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src/nat/front_ends/console/authentication_flow_handler.py (3)
221-223: Normalize hyphen usage in the docstring.This docstring still contains a non-breaking hyphen (
in‑process), which triggers ruff RUF002. Please replace it with a regular hyphen.- * Else → only build the redirect app and save it to `self._redirect_app` - for in‑process testing. + * Else → only build the redirect app and save it to `self._redirect_app` + for in-process testing.As per coding guidelines.
132-137: Remove the PKCE verifier from the authorization redirect.Leaking the
code_verifierin the authorization request undermines PKCE (and several IdPs reject it outright). RFC 7636 requires that only the challenge go over the wire; the verifier must stay server-side until the token exchange. Please drop thecode_verifierkwarg here and continue storing the verifier inflow_statefor the laterfetch_tokencall.- code_verifier=verifier if config.use_pkce else None, code_challenge=challenge if config.use_pkce else None,
251-251: Swap out the en dash in the success message.The success string still uses an en dash (
–), which ruff flags (RUF001) and will break lint. Replace it with a standard hyphen.- return "Authentication successful – you may close this tab." + return "Authentication successful - you may close this tab."As per coding guidelines.
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src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py (4)
55-56: Derive expiry robustly: supportexpires_inand coerce types.Some providers return
expires_ininstead ofexpires_at, or send timestamps as strings. Handle both.-from datetime import datetime -from datetime import timezone +from datetime import datetime +from datetime import timezone +from datetime import timedelta- expires_at_ts = new_token_data.get("expires_at") - new_expires_at = datetime.fromtimestamp(expires_at_ts, tz=timezone.utc) if expires_at_ts else None + expires_at_ts = new_token_data.get("expires_at") + expires_in = new_token_data.get("expires_in") + if expires_at_ts: + new_expires_at = datetime.fromtimestamp(int(expires_at_ts), tz=timezone.utc) + elif expires_in: + new_expires_at = datetime.now(timezone.utc) + timedelta(seconds=int(expires_in)) + else: + new_expires_at = None
58-62: Guard missingaccess_tokento preventKeyError.Some token responses (error or device-code style) may omit
access_token. Fail fast and fall back to full auth.- new_auth_result = AuthResult( - credentials=[BearerTokenCred(token=SecretStr(new_token_data["access_token"]))], + try: + access_token = new_token_data["access_token"] + except KeyError: + logger.debug("Token refresh response missing access_token; falling back to full auth.", exc_info=False) + return None + + new_auth_result = AuthResult( + credentials=[BearerTokenCred(token=SecretStr(access_token))], token_expires_at=new_expires_at, raw=new_token_data, )
16-21: Sanitized logging is fine; ensure consistency or drop the logger.A module logger was added but unused. The diffs above wire it into exception paths. If you choose not to log at all, remove the logger import/definition to avoid dead code.
Also applies to: 33-34
36-43: Add concise docstrings to class/methods (repo guideline).Per coding guidelines, public classes/functions should have Google-style docstrings. Add a brief description for
OAuth2AuthCodeFlowProviderand_attempt_token_refresh/authenticate.
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**/*.{py,yaml,yml}
📄 CodeRabbit inference engine (.cursor/rules/nat-test-llm.mdc)
**/*.{py,yaml,yml}: Configure response_seq as a list of strings; values cycle per call, and [] yields an empty string.
Configure delay_ms to inject per-call artificial latency in milliseconds for nat_test_llm.
Files:
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
**/*.py
📄 CodeRabbit inference engine (.cursor/rules/nat-test-llm.mdc)
**/*.py: Programmatic use: create TestLLMConfig(response_seq=[...], delay_ms=...), add with builder.add_llm("", cfg).
When retrieving the test LLM wrapper, use builder.get_llm(name, wrapper_type=LLMFrameworkEnum.) and call the framework’s method (e.g., ainvoke, achat, call).
**/*.py: In code comments/identifiers use NAT abbreviations as specified: nat for API namespace/CLI, nvidia-nat for package name, NAT for env var prefixes; do not use these abbreviations in documentation
Follow PEP 20 and PEP 8; run yapf with column_limit=120; use 4-space indentation; end files with a single trailing newline
Run ruff check --fix as linter (not formatter) using pyproject.toml config; fix warnings unless explicitly ignored
Respect naming: snake_case for functions/variables, PascalCase for classes, UPPER_CASE for constants
Treat pyright warnings as errors during development
Exception handling: use bare raise to re-raise; log with logger.error() when re-raising to avoid duplicate stack traces; use logger.exception() when catching without re-raising
Provide Google-style docstrings for every public module, class, function, and CLI command; first line concise and ending with a period; surround code entities with backticks
Validate and sanitize all user input, especially in web or CLI interfaces
Prefer httpx with SSL verification enabled by default and follow OWASP Top-10 recommendations
Use async/await for I/O-bound work; profile CPU-heavy paths with cProfile or mprof before optimizing; cache expensive computations with functools.lru_cache or external cache; leverage NumPy vectorized operations when beneficial
Files:
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
src/**/*.py
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
All importable Python code must live under src/ (or packages//src/)
Files:
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
src/nat/**/*
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
Changes in src/nat should prioritize backward compatibility
Files:
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
⚙️ CodeRabbit configuration file
This directory contains the core functionality of the toolkit. Changes should prioritize backward compatibility.
Files:
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
{src/**/*.py,packages/*/src/**/*.py}
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
All public APIs must have Python 3.11+ type hints on parameters and return values; prefer typing/collections.abc abstractions; use typing.Annotated when useful
Files:
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
**/*
⚙️ CodeRabbit configuration file
**/*: # Code Review Instructions
- Ensure the code follows best practices and coding standards. - For Python code, follow
PEP 20 and
PEP 8 for style guidelines.- Check for security vulnerabilities and potential issues. - Python methods should use type hints for all parameters and return values.
Example:def my_function(param1: int, param2: str) -> bool: pass- For Python exception handling, ensure proper stack trace preservation:
- When re-raising exceptions: use bare
raisestatements to maintain the original stack trace,
and uselogger.error()(notlogger.exception()) to avoid duplicate stack trace output.- When catching and logging exceptions without re-raising: always use
logger.exception()
to capture the full stack trace information.Documentation Review Instructions - Verify that documentation and comments are clear and comprehensive. - Verify that the documentation doesn't contain any TODOs, FIXMEs or placeholder text like "lorem ipsum". - Verify that the documentation doesn't contain any offensive or outdated terms. - Verify that documentation and comments are free of spelling mistakes, ensure the documentation doesn't contain any
words listed in the
ci/vale/styles/config/vocabularies/nat/reject.txtfile, words that might appear to be
spelling mistakes but are listed in theci/vale/styles/config/vocabularies/nat/accept.txtfile are OK.Misc. - All code (except .mdc files that contain Cursor rules) should be licensed under the Apache License 2.0,
and should contain an Apache License 2.0 header comment at the top of each file.
- Confirm that copyright years are up-to date whenever a file is changed.
Files:
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
🧬 Code graph analysis (1)
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py (1)
src/nat/data_models/authentication.py (2)
AuthResult(200-251)BearerTokenCred(158-165)
🪛 Ruff (0.13.1)
src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py
69-69: Do not catch blind exception: Exception
(BLE001)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
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src/nat/authentication/oauth2/oauth2_auth_code_flow_provider.py (1)
21-23: No changes required for Authlib exceptions. The genericexcept Exceptionalready catches Authlib’sOAuth2Error(and related client exceptions), so both HTTPX and OAuth-protocol errors will trigger the intended fallback.
Signed-off-by: Eric Evans <194135482+ericevans-nv@users.noreply.github.com>
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🧹 Nitpick comments (5)
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py (1)
83-84: Use explicit type hints withT | Nonesyntax.Per PEP 484 and modern Python conventions, avoid implicit Optional types.
Apply this diff to use explicit type hints:
def _create_authorization_url(self, client: AsyncOAuth2Client, config: OAuth2AuthCodeFlowProviderConfig, state: str, - verifier: str = None, - challenge: str = None) -> str: + verifier: str | None = None, + challenge: str | None = None) -> str:tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py (4)
371-371: Prefix unused unpacked variable with underscore.The
returned_statevariable is unpacked but never used.Apply this diff:
- authorization_url, returned_state = oauth_client.create_authorization_url( + authorization_url, _ = oauth_client.create_authorization_url(
607-607: Prefix unused unpacked variable with underscore.The
statevariable is unpacked but never used.Apply this diff:
- authorization_url, state = oauth_client.create_authorization_url( + authorization_url, _ = oauth_client.create_authorization_url(
483-483: Remove duplicate@pytest.mark.asynciodecorator.This test already has
@pytest.mark.asyncioon line 483, but if you add the module-levelpytestmark, this decorator becomes redundant.Once you add the module-level
pytestmark, you can remove this decorator:-@pytest.mark.asyncio async def test_authorization_code_security_handling(mock_server,
651-651: Remove redundant@pytest.mark.asynciodecorator.This test already has
@pytest.mark.asynciobut will be redundant once module-level marking is added.Once you add the module-level
pytestmark, remove this decorator:- @pytest.mark.asyncio async def test_validate_authentication_log_suppression(self, caplog):
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src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py(3 hunks)src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py(2 hunks)tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py(1 hunks)
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📓 Path-based instructions (8)
**/*.{py,yaml,yml}
📄 CodeRabbit inference engine (.cursor/rules/nat-test-llm.mdc)
**/*.{py,yaml,yml}: Configure response_seq as a list of strings; values cycle per call, and [] yields an empty string.
Configure delay_ms to inject per-call artificial latency in milliseconds for nat_test_llm.
Files:
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.pytests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.pysrc/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
**/*.py
📄 CodeRabbit inference engine (.cursor/rules/nat-test-llm.mdc)
**/*.py: Programmatic use: create TestLLMConfig(response_seq=[...], delay_ms=...), add with builder.add_llm("", cfg).
When retrieving the test LLM wrapper, use builder.get_llm(name, wrapper_type=LLMFrameworkEnum.) and call the framework’s method (e.g., ainvoke, achat, call).
**/*.py: In code comments/identifiers use NAT abbreviations as specified: nat for API namespace/CLI, nvidia-nat for package name, NAT for env var prefixes; do not use these abbreviations in documentation
Follow PEP 20 and PEP 8; run yapf with column_limit=120; use 4-space indentation; end files with a single trailing newline
Run ruff check --fix as linter (not formatter) using pyproject.toml config; fix warnings unless explicitly ignored
Respect naming: snake_case for functions/variables, PascalCase for classes, UPPER_CASE for constants
Treat pyright warnings as errors during development
Exception handling: use bare raise to re-raise; log with logger.error() when re-raising to avoid duplicate stack traces; use logger.exception() when catching without re-raising
Provide Google-style docstrings for every public module, class, function, and CLI command; first line concise and ending with a period; surround code entities with backticks
Validate and sanitize all user input, especially in web or CLI interfaces
Prefer httpx with SSL verification enabled by default and follow OWASP Top-10 recommendations
Use async/await for I/O-bound work; profile CPU-heavy paths with cProfile or mprof before optimizing; cache expensive computations with functools.lru_cache or external cache; leverage NumPy vectorized operations when beneficial
Files:
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.pytests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.pysrc/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
src/**/*.py
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
All importable Python code must live under src/ (or packages//src/)
Files:
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.pysrc/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
src/nat/**/*
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
Changes in src/nat should prioritize backward compatibility
Files:
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.pysrc/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
⚙️ CodeRabbit configuration file
This directory contains the core functionality of the toolkit. Changes should prioritize backward compatibility.
Files:
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.pysrc/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
{src/**/*.py,packages/*/src/**/*.py}
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
All public APIs must have Python 3.11+ type hints on parameters and return values; prefer typing/collections.abc abstractions; use typing.Annotated when useful
Files:
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.pysrc/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
**/*
⚙️ CodeRabbit configuration file
**/*: # Code Review Instructions
- Ensure the code follows best practices and coding standards. - For Python code, follow
PEP 20 and
PEP 8 for style guidelines.- Check for security vulnerabilities and potential issues. - Python methods should use type hints for all parameters and return values.
Example:def my_function(param1: int, param2: str) -> bool: pass- For Python exception handling, ensure proper stack trace preservation:
- When re-raising exceptions: use bare
raisestatements to maintain the original stack trace,
and uselogger.error()(notlogger.exception()) to avoid duplicate stack trace output.- When catching and logging exceptions without re-raising: always use
logger.exception()
to capture the full stack trace information.Documentation Review Instructions - Verify that documentation and comments are clear and comprehensive. - Verify that the documentation doesn't contain any TODOs, FIXMEs or placeholder text like "lorem ipsum". - Verify that the documentation doesn't contain any offensive or outdated terms. - Verify that documentation and comments are free of spelling mistakes, ensure the documentation doesn't contain any
words listed in the
ci/vale/styles/config/vocabularies/nat/reject.txtfile, words that might appear to be
spelling mistakes but are listed in theci/vale/styles/config/vocabularies/nat/accept.txtfile are OK.Misc. - All code (except .mdc files that contain Cursor rules) should be licensed under the Apache License 2.0,
and should contain an Apache License 2.0 header comment at the top of each file.
- Confirm that copyright years are up-to date whenever a file is changed.
Files:
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.pytests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.pysrc/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
tests/**/*.py
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
Unit tests reside under tests/ and should use markers defined in pyproject.toml (e.g., integration)
Files:
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py
⚙️ CodeRabbit configuration file
tests/**/*.py: - Ensure that tests are comprehensive, cover edge cases, and validate the functionality of the code. - Test functions should be named using thetest_prefix, using snake_case. - Any frequently repeated code should be extracted into pytest fixtures. - Pytest fixtures should define the name argument when applying the pytest.fixture decorator. The fixture
function being decorated should be named using thefixture_prefix, using snake_case. Example:
@pytest.fixture(name="my_fixture")
def fixture_my_fixture():
pass
Files:
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py
{tests/**/*.py,examples/*/tests/**/*.py}
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
{tests/**/*.py,examples/*/tests/**/*.py}: Use pytest (with pytest-asyncio for async); name test files test_*.py; test functions start with test_; extract repeated code into fixtures; fixtures must set name in decorator and be named with fixture_ prefix
Mock external services with pytest_httpserver or unittest.mock; do not hit live endpoints
Mark expensive tests with @pytest.mark.slow or @pytest.mark.integration
Files:
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py
🧠 Learnings (1)
📚 Learning: 2025-09-23T18:39:15.023Z
Learnt from: CR
PR: NVIDIA/NeMo-Agent-Toolkit#0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-09-23T18:39:15.023Z
Learning: Applies to {tests/**/*.py,examples/*/tests/**/*.py} : Use pytest (with pytest-asyncio for async); name test files test_*.py; test functions start with test_; extract repeated code into fixtures; fixtures must set name in decorator and be named with fixture_ prefix
Applied to files:
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py
🧬 Code graph analysis (2)
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py (3)
tests/nat/front_ends/auth_flow_handlers/test_websocket_flow_handler.py (3)
create_oauth_client(52-66)create_websocket_message(116-143)create_websocket_message(193-194)src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (2)
config(121-122)redirect_uri(1049-1088)src/nat/front_ends/console/authentication_flow_handler.py (1)
_create_authorization_url(112-141)
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py (3)
src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (1)
redirect_uri(1049-1088)tests/nat/front_ends/auth_flow_handlers/test_console_flow_handler.py (1)
mock_server(77-81)tests/nat/front_ends/auth_flow_handlers/test_websocket_flow_handler.py (1)
mock_server(73-77)
🪛 Ruff (0.13.1)
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py
75-75: Avoid specifying long messages outside the exception class
(TRY003)
77-77: Avoid specifying long messages outside the exception class
(TRY003)
83-83: PEP 484 prohibits implicit Optional
Convert to T | None
(RUF013)
84-84: PEP 484 prohibits implicit Optional
Convert to T | None
(RUF013)
106-106: Consider moving this statement to an else block
(TRY300)
108-108: Avoid specifying long messages outside the exception class
(TRY003)
134-134: Avoid specifying long messages outside the exception class
(TRY003)
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py
37-37: Possible hardcoded password assigned to argument: "client_secret"
(S106)
39-39: Possible hardcoded password assigned to argument: "token_url"
(S106)
160-160: String contains ambiguous е (CYRILLIC SMALL LETTER IE). Did you mean e (LATIN SMALL LETTER E)?
(RUF001)
161-161: String contains ambiguous е (CYRILLIC SMALL LETTER IE). Did you mean e (LATIN SMALL LETTER E)?
(RUF001)
195-195: Unused method argument: attack_description
(ARG002)
371-371: Unpacked variable returned_state is never used
Prefix it with an underscore or any other dummy variable pattern
(RUF059)
421-421: Unused method argument: test_case_name
(ARG002)
457-457: Create your own exception
(TRY002)
457-457: Avoid specifying long messages outside the exception class
(TRY003)
489-489: Unused function argument: description
(ARG001)
575-575: Possible hardcoded password assigned to argument: "client_secret"
(S106)
607-607: Unpacked variable state is never used
Prefix it with an underscore or any other dummy variable pattern
(RUF059)
src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py
1081-1081: Do not catch blind exception: Exception
(BLE001)
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
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🔇 Additional comments (4)
tests/nat/front_ends/auth_flow_handlers/test_oauth_security_tests.py (2)
160-161: LGTM! Cyrillic character testing is intentional.The Cyrillic 'е' characters on these lines are intentionally used to test Unicode homograph attacks in OAuth redirect URIs. This is excellent security test coverage.
22-28: Critical: Add module-level pytest asyncio marker for async tests.All tests in this module are
async defbut lack the necessary pytest-asyncio marking. Without this, pytest will treat them as regular functions returning coroutines, and the tests won't execute properly.Add this line after the imports to mark all tests in the module:
from nat.authentication.oauth2.oauth2_auth_code_flow_provider_config import OAuth2AuthCodeFlowProviderConfig +pytestmark = pytest.mark.asyncio + # --------------------------------------------------------------------------- #Alternatively, you could decorate each async test with
@pytest.mark.asyncio.src/nat/front_ends/fastapi/fastapi_front_end_plugin_worker.py (1)
1076-1082: Add logging for error paths and suppress Ruff BLE001.The error handling correctly distinguishes between OAuth errors, network errors, and general exceptions, but it's missing structured logging before setting the exception. This helps with debugging without re-raising.
Apply this diff to add logging and suppress the Ruff warning:
except OAuthError as e: + logger.error("Authorization server rejected request: %s (%s)", + getattr(e, "error", e.__class__.__name__), + getattr(e, "description", str(e))) flow_state.future.set_exception( RuntimeError(f"Authorization server rejected request: {e.error} ({e.description})")) except httpx.HTTPError as e: + logger.error("Network error during token fetch: %s", e) flow_state.future.set_exception(RuntimeError(f"Network error during token fetch: {e}")) - except Exception as e: + except Exception as e: # noqa: BLE001 + logger.exception("Unexpected error during OAuth callback") flow_state.future.set_exception(RuntimeError(f"Authentication failed: {e}"))As per coding guidelines
src/nat/front_ends/fastapi/auth_flow_handlers/websocket_flow_handler.py (1)
99-105: Critical: Remove PKCE verifier from authorization URL to prevent security vulnerability.The
code_verifiermust never be sent in the authorization request URL as it defeats the purpose of PKCE. The verifier should only be sent to the token endpoint. Including it in the authorization URL exposes it in browser history, server logs, and referrer headers.Apply this diff to fix the PKCE vulnerability:
authorization_url, _ = client.create_authorization_url( config.authorization_url, state=state, - code_verifier=verifier if config.use_pkce else None, code_challenge=challenge if config.use_pkce else None, **(config.authorization_kwargs or {}) )The verifier is already correctly stored in
flow_state.verifierfor later use at the token exchange step.
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Approving with one question related to user experience.
The tests look great.
|
/merge |
2 participants
Description
This PR adds comprehensive security testing for OAuth2 authorization code flows and enhances token validation coverage. The implementation includes parameterized tests for redirect URI validation, authorization code security (one-time use, expiration, client binding), and state parameter handling to prevent CSRF attacks. Additionally, it extends bearer token validation with expiration testing for both JWT and opaque tokens, and implements authentication log suppression to prevent sensitive credential leakage. The test suite covers critical OAuth2 security requirements including PKCE validation, error response handling, and proper authentication flow component integration across both console and WebSocket handlers.
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Summary by CodeRabbit
Bug Fixes
Refactor
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Tests
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