hermes-agent/tests/tools/test_env_passthrough.py
kshitijk4poor 66827f8947 chore: prune unused imports and duplicate import redefinitions
Remove unused imports (F401) and duplicate/shadowed import
redefinitions (F811) across the codebase using ruff's safe
autofixes. No behavioral changes -- imports only.

- ~1400 safe autofixes applied across 644 files (net -1072 lines)
- __init__.py re-exports preserved (excluded from F401 removal so
  public re-export surfaces stay intact)
- Re-exports that are imported or monkeypatched by tests but look
  unused in their defining module are kept with explicit # noqa:
  F401 (gateway/run.py load_dotenv; run_agent re-exports from
  agent.message_sanitization, agent.context_compressor,
  agent.retry_utils, agent.prompt_builder, agent.process_bootstrap,
  agent.codex_responses_adapter)
- Unsafe F841 (unused-variable) fixes deliberately skipped -- those
  can change behavior when the RHS has side effects
- ruff lints remain disabled in pyproject.toml (only PLW1514 is
  selected); this is a one-time cleanup, not a config change

Verification:
- python -m compileall: clean
- pytest --collect-only: all 27161 tests collect (zero import errors)
- core entry points import clean (run_agent, model_tools, cli,
  toolsets, hermes_state, batch_runner, gateway)
- static scan: every name any test imports directly from an edited
  module still resolves
2026-05-28 22:26:25 -07:00

230 lines
8.9 KiB
Python

"""Tests for tools.env_passthrough — skill and config env var passthrough."""
import os
import pytest
import yaml
import tools.env_passthrough as _ep_mod
from tools.env_passthrough import (
clear_env_passthrough,
get_all_passthrough,
is_env_passthrough,
register_env_passthrough,
)
@pytest.fixture(autouse=True)
def _clean_passthrough():
"""Ensure a clean passthrough state for every test."""
clear_env_passthrough()
_ep_mod._config_passthrough = None
yield
clear_env_passthrough()
_ep_mod._config_passthrough = None
class TestSkillScopedPassthrough:
def test_register_and_check(self):
assert not is_env_passthrough("TENOR_API_KEY")
register_env_passthrough(["TENOR_API_KEY"])
assert is_env_passthrough("TENOR_API_KEY")
def test_register_multiple(self):
register_env_passthrough(["FOO_TOKEN", "BAR_SECRET"])
assert is_env_passthrough("FOO_TOKEN")
assert is_env_passthrough("BAR_SECRET")
assert not is_env_passthrough("OTHER_KEY")
def test_clear(self):
register_env_passthrough(["TENOR_API_KEY"])
assert is_env_passthrough("TENOR_API_KEY")
clear_env_passthrough()
assert not is_env_passthrough("TENOR_API_KEY")
def test_get_all(self):
register_env_passthrough(["A_KEY", "B_TOKEN"])
result = get_all_passthrough()
assert "A_KEY" in result
assert "B_TOKEN" in result
def test_strips_whitespace(self):
register_env_passthrough([" SPACED_KEY "])
assert is_env_passthrough("SPACED_KEY")
def test_skips_empty(self):
register_env_passthrough(["", " ", "VALID_KEY"])
assert is_env_passthrough("VALID_KEY")
assert not is_env_passthrough("")
class TestConfigPassthrough:
def test_reads_from_config(self, tmp_path, monkeypatch):
config = {"terminal": {"env_passthrough": ["MY_CUSTOM_KEY", "ANOTHER_TOKEN"]}}
config_path = tmp_path / "config.yaml"
config_path.write_text(yaml.dump(config))
monkeypatch.setenv("HERMES_HOME", str(tmp_path))
_ep_mod._config_passthrough = None
assert is_env_passthrough("MY_CUSTOM_KEY")
assert is_env_passthrough("ANOTHER_TOKEN")
assert not is_env_passthrough("UNRELATED_VAR")
def test_empty_config(self, tmp_path, monkeypatch):
config = {"terminal": {"env_passthrough": []}}
config_path = tmp_path / "config.yaml"
config_path.write_text(yaml.dump(config))
monkeypatch.setenv("HERMES_HOME", str(tmp_path))
_ep_mod._config_passthrough = None
assert not is_env_passthrough("ANYTHING")
def test_missing_config_key(self, tmp_path, monkeypatch):
config = {"terminal": {"backend": "local"}}
config_path = tmp_path / "config.yaml"
config_path.write_text(yaml.dump(config))
monkeypatch.setenv("HERMES_HOME", str(tmp_path))
_ep_mod._config_passthrough = None
assert not is_env_passthrough("ANYTHING")
def test_no_config_file(self, tmp_path, monkeypatch):
monkeypatch.setenv("HERMES_HOME", str(tmp_path))
_ep_mod._config_passthrough = None
assert not is_env_passthrough("ANYTHING")
def test_union_of_skill_and_config(self, tmp_path, monkeypatch):
config = {"terminal": {"env_passthrough": ["CONFIG_KEY"]}}
config_path = tmp_path / "config.yaml"
config_path.write_text(yaml.dump(config))
monkeypatch.setenv("HERMES_HOME", str(tmp_path))
_ep_mod._config_passthrough = None
register_env_passthrough(["SKILL_KEY"])
all_pt = get_all_passthrough()
assert "CONFIG_KEY" in all_pt
assert "SKILL_KEY" in all_pt
class TestExecuteCodeIntegration:
"""Verify that the passthrough is checked in execute_code's env filtering."""
def test_secret_substring_blocked_by_default(self):
"""TENOR_API_KEY should be blocked without passthrough."""
_SAFE_ENV_PREFIXES = ("PATH", "HOME", "USER", "LANG", "LC_", "TERM",
"TMPDIR", "TMP", "TEMP", "SHELL", "LOGNAME",
"XDG_", "PYTHONPATH", "VIRTUAL_ENV", "CONDA")
_SECRET_SUBSTRINGS = ("KEY", "TOKEN", "SECRET", "PASSWORD", "CREDENTIAL",
"PASSWD", "AUTH")
test_env = {"PATH": "/usr/bin", "TENOR_API_KEY": "test123", "HOME": "/home/user"}
child_env = {}
for k, v in test_env.items():
if is_env_passthrough(k):
child_env[k] = v
continue
if any(s in k.upper() for s in _SECRET_SUBSTRINGS):
continue
if any(k.startswith(p) for p in _SAFE_ENV_PREFIXES):
child_env[k] = v
assert "PATH" in child_env
assert "HOME" in child_env
assert "TENOR_API_KEY" not in child_env
def test_passthrough_allows_secret_through(self):
"""TENOR_API_KEY should pass through when registered."""
_SAFE_ENV_PREFIXES = ("PATH", "HOME", "USER", "LANG", "LC_", "TERM",
"TMPDIR", "TMP", "TEMP", "SHELL", "LOGNAME",
"XDG_", "PYTHONPATH", "VIRTUAL_ENV", "CONDA")
_SECRET_SUBSTRINGS = ("KEY", "TOKEN", "SECRET", "PASSWORD", "CREDENTIAL",
"PASSWD", "AUTH")
register_env_passthrough(["TENOR_API_KEY"])
test_env = {"PATH": "/usr/bin", "TENOR_API_KEY": "test123", "HOME": "/home/user"}
child_env = {}
for k, v in test_env.items():
if is_env_passthrough(k):
child_env[k] = v
continue
if any(s in k.upper() for s in _SECRET_SUBSTRINGS):
continue
if any(k.startswith(p) for p in _SAFE_ENV_PREFIXES):
child_env[k] = v
assert "PATH" in child_env
assert "HOME" in child_env
assert "TENOR_API_KEY" in child_env
assert child_env["TENOR_API_KEY"] == "test123"
class TestTerminalIntegration:
"""Verify that the passthrough is checked in terminal's env sanitizers."""
def test_blocklisted_var_blocked_by_default(self):
from tools.environments.local import _sanitize_subprocess_env, _HERMES_PROVIDER_ENV_BLOCKLIST
# Pick a var we know is in the blocklist
blocked_var = next(iter(_HERMES_PROVIDER_ENV_BLOCKLIST))
env = {blocked_var: "secret_value", "PATH": "/usr/bin"}
result = _sanitize_subprocess_env(env)
assert blocked_var not in result
assert "PATH" in result
def test_passthrough_cannot_override_provider_blocklist(self):
"""GHSA-rhgp-j443-p4rf: register_env_passthrough must NOT accept
Hermes provider credentials — that was the bypass where a skill
could declare ANTHROPIC_TOKEN / OPENAI_API_KEY as passthrough and
defeat the execute_code sandbox scrubbing."""
from tools.environments.local import (
_sanitize_subprocess_env,
_HERMES_PROVIDER_ENV_BLOCKLIST,
)
blocked_var = next(iter(_HERMES_PROVIDER_ENV_BLOCKLIST))
# Attempt to register — must be silently refused (logged warning).
register_env_passthrough([blocked_var])
# is_env_passthrough must NOT report it as allowed
assert not is_env_passthrough(blocked_var)
# Sanitizer still strips the var from subprocess env
env = {blocked_var: "secret_value", "PATH": "/usr/bin"}
result = _sanitize_subprocess_env(env)
assert blocked_var not in result
assert "PATH" in result
def test_make_run_env_blocklist_override_rejected(self):
"""_make_run_env must NOT expose a blocklisted var to subprocess env
even after a skill attempts to register it via passthrough."""
from tools.environments.local import (
_make_run_env,
_HERMES_PROVIDER_ENV_BLOCKLIST,
)
blocked_var = next(iter(_HERMES_PROVIDER_ENV_BLOCKLIST))
os.environ[blocked_var] = "secret_value"
try:
# Without passthrough — blocked
result_before = _make_run_env({})
assert blocked_var not in result_before
# Skill tries to register it — must be refused, so still blocked
register_env_passthrough([blocked_var])
result_after = _make_run_env({})
assert blocked_var not in result_after
finally:
os.environ.pop(blocked_var, None)
def test_non_hermes_api_key_still_registerable(self):
"""Third-party API keys (TENOR_API_KEY, NOTION_TOKEN, etc.) are NOT
Hermes provider credentials and must still pass through — skills
that legitimately wrap third-party APIs must keep working."""
# TENOR_API_KEY is a real example — used by the gif-search skill
register_env_passthrough(["TENOR_API_KEY"])
assert is_env_passthrough("TENOR_API_KEY")
# Arbitrary skill-specific var
register_env_passthrough(["MY_SKILL_CUSTOM_CONFIG"])
assert is_env_passthrough("MY_SKILL_CUSTOM_CONFIG")