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timmy-config/tests/test_ssh_trust.py
Alexander Whitestone 19aa0830f4
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Harden Gemini scripts with verified SSH trust
2026-04-11 15:13:15 -04:00

94 lines
3.0 KiB
Python

"""Tests for scripts/ssh_trust.py verified SSH trust helpers."""
from __future__ import annotations
import importlib.util
import shlex
import subprocess
from pathlib import Path
import pytest
REPO_ROOT = Path(__file__).parent.parent
spec = importlib.util.spec_from_file_location("ssh_trust", REPO_ROOT / "scripts" / "ssh_trust.py")
ssh_trust = importlib.util.module_from_spec(spec)
spec.loader.exec_module(ssh_trust)
def test_enroll_host_key_writes_scanned_key(tmp_path):
calls = []
known_hosts = tmp_path / "known_hosts"
def fake_run(argv, capture_output, text, timeout):
calls.append(argv)
return subprocess.CompletedProcess(
argv,
0,
stdout="example.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAITestKey\n",
stderr="",
)
written_path = ssh_trust.enroll_host_key(
"example.com",
port=2222,
known_hosts_path=known_hosts,
runner=fake_run,
)
assert written_path == known_hosts
assert known_hosts.read_text() == "example.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAITestKey\n"
assert calls == [["ssh-keyscan", "-p", "2222", "-H", "example.com"]]
def test_executor_requires_known_hosts_or_auto_enroll(tmp_path):
executor = ssh_trust.VerifiedSSHExecutor(
known_hosts_path=tmp_path / "known_hosts",
auto_enroll=False,
)
with pytest.raises(ssh_trust.HostKeyEnrollmentError):
executor.plan("203.0.113.10", ["echo", "ok"])
def test_remote_command_is_quoted_and_local_execution_stays_shell_free(tmp_path):
known_hosts = tmp_path / "known_hosts"
known_hosts.write_text("203.0.113.10 ssh-ed25519 AAAAC3NzaTest\n")
executor = ssh_trust.VerifiedSSHExecutor(known_hosts_path=known_hosts)
command = ["python3", "run_agent.py", "--task", "hello 'quoted' world"]
plan = executor.plan("203.0.113.10", command, port=2222)
expected_remote_command = shlex.join(command)
assert plan.local is False
assert plan.remote_command == expected_remote_command
assert plan.argv[-1] == expected_remote_command
assert "StrictHostKeyChecking=yes" in plan.argv
assert f"UserKnownHostsFile={known_hosts}" in plan.argv
assert plan.argv[-2] == "root@203.0.113.10"
local_plan = executor.plan("127.0.0.1", ["python3", "-V"], local=True)
assert local_plan.local is True
assert local_plan.argv == ["python3", "-V"]
assert local_plan.remote_command is None
def test_run_raises_host_key_verification_error(tmp_path):
known_hosts = tmp_path / "known_hosts"
known_hosts.write_text("203.0.113.10 ssh-ed25519 AAAAC3NzaTest\n")
def fake_run(argv, capture_output, text, timeout):
return subprocess.CompletedProcess(
argv,
255,
stdout="",
stderr="Host key verification failed.\n",
)
executor = ssh_trust.VerifiedSSHExecutor(
known_hosts_path=known_hosts,
runner=fake_run,
)
with pytest.raises(ssh_trust.HostKeyVerificationError):
executor.run("203.0.113.10", ["true"])