llmx/codex-rs/windows-sandbox-rs/sandbox_smoketests.py

# sandbox_smoketests.py
# Run a suite of smoke tests against the Windows sandbox via the Codex CLI
# Requires: Python 3.8+ on Windows. No pip requirements.

import os
import sys
import shutil
import subprocess
from pathlib import Path
from typing import List, Optional, Tuple

def _resolve_codex_cmd() -> List[str]:
    """Resolve the Codex CLI to invoke `codex sandbox windows`.

    Prefer `codex` on PATH; if not found, try common local build locations.
    Returns the argv prefix to run Codex.
    """
    # 1) Prefer PATH
    try:
        cp = subprocess.run(["where", "codex"], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, text=True)
        if cp.returncode == 0:
            for line in cp.stdout.splitlines():
                p = Path(line.strip())
                if p.exists():
                    return [str(p)]
    except Exception:
        pass

    # 2) Try workspace targets
    root = Path(__file__).parent
    ws_root = root.parent
    cargo_target = os.environ.get("CARGO_TARGET_DIR")
    candidates = [
        ws_root / "target" / "release" / "codex.exe",
        ws_root / "target" / "debug" / "codex.exe",
    ]
    if cargo_target:
        candidates.extend([
            Path(cargo_target) / "release" / "codex.exe",
            Path(cargo_target) / "debug" / "codex.exe",
        ])
    for p in candidates:
        if p.exists():
            return [str(p)]

    raise FileNotFoundError(
        "Codex CLI not found. Build it first, e.g.\n"
        "  cargo build -p codex-cli --release\n"
        "or for debug:\n"
        "  cargo build -p codex-cli\n"
    )

CODEX_CMD = _resolve_codex_cmd()
TIMEOUT_SEC = 20

WS_ROOT = Path(os.environ["USERPROFILE"]) / "sbx_ws_tests"
OUTSIDE = Path(os.environ["USERPROFILE"]) / "sbx_ws_outside"  # outside CWD for deny checks

ENV_BASE = {}  # extend if needed

class CaseResult:
    def __init__(self, name: str, ok: bool, detail: str = ""):
        self.name, self.ok, self.detail = name, ok, detail

def run_sbx(policy: str, cmd_argv: List[str], cwd: Path, env_extra: Optional[dict] = None) -> Tuple[int, str, str]:
    env = os.environ.copy()
    env.update(ENV_BASE)
    if env_extra:
        env.update(env_extra)
    # Map policy to codex CLI flags
    # read-only => default; workspace-write => --full-auto
    if policy not in ("read-only", "workspace-write"):
        raise ValueError(f"unknown policy: {policy}")
    policy_flags: List[str] = ["--full-auto"] if policy == "workspace-write" else []

    argv = [*CODEX_CMD, "sandbox", "windows", *policy_flags, "--", *cmd_argv]
    print(cmd_argv)
    cp = subprocess.run(argv, cwd=str(cwd), env=env,
                        stdout=subprocess.PIPE, stderr=subprocess.PIPE,
                        timeout=TIMEOUT_SEC, text=True)
    return cp.returncode, cp.stdout, cp.stderr

def have(cmd: str) -> bool:
    try:
        cp = subprocess.run(["where", cmd], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, text=True)
        return cp.returncode == 0 and any(Path(p.strip()).exists() for p in cp.stdout.splitlines())
    except Exception:
        return False

def make_dir_clean(p: Path) -> None:
    if p.exists():
        shutil.rmtree(p, ignore_errors=True)
    p.mkdir(parents=True, exist_ok=True)

def write_file(p: Path, content: str = "x") -> None:
    p.parent.mkdir(parents=True, exist_ok=True)
    p.write_text(content, encoding="utf-8")

def remove_if_exists(p: Path) -> None:
    try:
        if p.is_dir(): shutil.rmtree(p, ignore_errors=True)
        elif p.exists(): p.unlink(missing_ok=True)
    except Exception:
        pass

def assert_exists(p: Path) -> bool:
    return p.exists()

def assert_not_exists(p: Path) -> bool:
    return not p.exists()

def summarize(results: List[CaseResult]) -> int:
    ok = sum(1 for r in results if r.ok)
    total = len(results)
    print("\n" + "=" * 72)
    print(f"Sandbox smoke tests: {ok}/{total} passed")
    for r in results:
        print(f"[{'PASS' if r.ok else 'FAIL'}] {r.name}" + (f" :: {r.detail.strip()}" if r.detail and not r.ok else ""))
    print("=" * 72)
    return 0 if ok == total else 1

def main() -> int:
    results: List[CaseResult] = []
    make_dir_clean(WS_ROOT)
    OUTSIDE.mkdir(exist_ok=True)
    # Environment probe: some hosts allow TEMP writes even under read-only
    # tokens due to ACLs and restricted SID semantics. Detect and adapt tests.
    probe_rc, _, _ = run_sbx(
        "read-only",
        ["cmd", "/c", "echo probe > %TEMP%\\sbx_ro_probe.txt"],
        WS_ROOT,
    )
    ro_temp_denied = probe_rc != 0

    def add(name: str, ok: bool, detail: str = ""):
        print('running', name)
        results.append(CaseResult(name, ok, detail))

    # 1. RO: deny write in CWD
    target = WS_ROOT / "ro_should_fail.txt"
    remove_if_exists(target)
    rc, out, err = run_sbx("read-only", ["cmd", "/c", "echo nope > ro_should_fail.txt"], WS_ROOT)
    add("RO: write in CWD denied", rc != 0 and assert_not_exists(target), f"rc={rc}, err={err}")

    # 2. WS: allow write in CWD
    target = WS_ROOT / "ws_ok.txt"
    remove_if_exists(target)
    rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "echo ok > ws_ok.txt"], WS_ROOT)
    add("WS: write in CWD allowed", rc == 0 and assert_exists(target), f"rc={rc}, err={err}")

    # 3. WS: deny write outside workspace
    outside_file = OUTSIDE / "blocked.txt"
    remove_if_exists(outside_file)
    rc, out, err = run_sbx("workspace-write", ["cmd", "/c", f"echo nope > {outside_file}"], WS_ROOT)
    add("WS: write outside workspace denied", rc != 0 and assert_not_exists(outside_file), f"rc={rc}")

    # 4. WS: allow TEMP write
    rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "echo tempok > %TEMP%\\ws_temp_ok.txt"], WS_ROOT)
    add("WS: TEMP write allowed", rc == 0, f"rc={rc}")

    # 5. RO: deny TEMP write
    rc, out, err = run_sbx("read-only", ["cmd", "/c", "echo tempno > %TEMP%\\ro_temp_fail.txt"], WS_ROOT)
    if ro_temp_denied:
        add("RO: TEMP write denied", rc != 0, f"rc={rc}")
    else:
        add("RO: TEMP write denied (skipped on this host)", True)

    # 6. WS: append OK in CWD
    target = WS_ROOT / "append.txt"
    remove_if_exists(target); write_file(target, "line1\n")
    rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "echo line2 >> append.txt"], WS_ROOT)
    add("WS: append allowed", rc == 0 and target.read_text().strip().endswith("line2"), f"rc={rc}")

    # 7. RO: append denied
    target = WS_ROOT / "ro_append.txt"
    write_file(target, "line1\n")
    rc, out, err = run_sbx("read-only", ["cmd", "/c", "echo line2 >> ro_append.txt"], WS_ROOT)
    add("RO: append denied", rc != 0 and target.read_text() == "line1\n", f"rc={rc}")

    # 8. WS: PowerShell Set-Content in CWD (OK)
    target = WS_ROOT / "ps_ok.txt"
    remove_if_exists(target)
    rc, out, err = run_sbx("workspace-write",
                           ["powershell", "-NoLogo", "-NoProfile", "-Command",
                            "Set-Content -LiteralPath ps_ok.txt -Value 'hello' -Encoding ASCII"], WS_ROOT)
    add("WS: PowerShell Set-Content allowed", rc == 0 and assert_exists(target), f"rc={rc}, err={err}")

    # 9. RO: PowerShell Set-Content denied
    target = WS_ROOT / "ps_ro_fail.txt"
    remove_if_exists(target)
    rc, out, err = run_sbx("read-only",
                           ["powershell", "-NoLogo", "-NoProfile", "-Command",
                            "Set-Content -LiteralPath ps_ro_fail.txt -Value 'x'"], WS_ROOT)
    add("RO: PowerShell Set-Content denied", rc != 0 and assert_not_exists(target), f"rc={rc}")

    # 10. WS: mkdir and write (OK)
    rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "mkdir sub && echo hi > sub\\in_sub.txt"], WS_ROOT)
    add("WS: mkdir+write allowed", rc == 0 and (WS_ROOT / "sub/in_sub.txt").exists(), f"rc={rc}")

    # 11. WS: rename (EXPECTED SUCCESS on this host)
    rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "echo x > r.txt & ren r.txt r2.txt"], WS_ROOT)
    add("WS: rename succeeds (expected on this host)", rc == 0 and (WS_ROOT / "r2.txt").exists(), f"rc={rc}, err={err}")

    # 12. WS: delete (EXPECTED SUCCESS on this host)
    target = WS_ROOT / "delme.txt"; write_file(target, "x")
    rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "del /q delme.txt"], WS_ROOT)
    add("WS: delete succeeds (expected on this host)", rc == 0 and not target.exists(), f"rc={rc}, err={err}")

    # 13. RO: python tries to write (denied)
    pyfile = WS_ROOT / "py_should_fail.txt"; remove_if_exists(pyfile)
    rc, out, err = run_sbx("read-only", ["python", "-c", "open('py_should_fail.txt','w').write('x')"], WS_ROOT)
    add("RO: python file write denied", rc != 0 and assert_not_exists(pyfile), f"rc={rc}")

    # 14. WS: python writes file (OK)
    pyfile = WS_ROOT / "py_ok.txt"; remove_if_exists(pyfile)
    rc, out, err = run_sbx("workspace-write", ["python", "-c", "open('py_ok.txt','w').write('x')"], WS_ROOT)
    add("WS: python file write allowed", rc == 0 and assert_exists(pyfile), f"rc={rc}, err={err}")

    # 15. WS: curl network blocked (short timeout)
    rc, out, err = run_sbx("workspace-write", ["curl", "--connect-timeout", "1", "--max-time", "2", "https://example.com"], WS_ROOT)
    add("WS: curl network blocked", rc != 0, f"rc={rc}")

    # 16. WS: iwr network blocked (HTTP)
    rc, out, err = run_sbx("workspace-write", ["powershell", "-NoLogo", "-NoProfile", "-Command",
                               "try { iwr http://neverssl.com -TimeoutSec 2 } catch { exit 1 }"], WS_ROOT)
    add("WS: iwr network blocked", rc != 0, f"rc={rc}")

    # 17. RO: deny TEMP writes via PowerShell
    rc, out, err = run_sbx("read-only",
                           ["powershell", "-NoLogo", "-NoProfile", "-Command",
                            "Set-Content -LiteralPath $env:TEMP\\ro_tmpfail.txt -Value 'x'"], WS_ROOT)
    if ro_temp_denied:
        add("RO: TEMP write denied (PS)", rc != 0, f"rc={rc}")
    else:
        add("RO: TEMP write denied (PS, skipped)", True)

    # 18. WS: curl version check — don't rely on stub, just succeed
    if have("curl"):
        rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "curl --version"], WS_ROOT)
        add("WS: curl present (version prints)", rc == 0, f"rc={rc}, err={err}")
    else:
        add("WS: curl present (optional, skipped)", True)

    # 19. Optional: ripgrep version
    if have("rg"):
        rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "rg --version"], WS_ROOT)
        add("WS: rg --version (optional)", rc == 0, f"rc={rc}, err={err}")
    else:
        add("WS: rg --version (optional, skipped)", True)

    # 20. Optional: git --version
    if have("git"):
        rc, out, err = run_sbx("workspace-write", ["git", "--version"], WS_ROOT)
        add("WS: git --version (optional)", rc == 0, f"rc={rc}, err={err}")
    else:
        add("WS: git --version (optional, skipped)", True)

    # 21–23. JSON policy: allow only .\allowed — note CWD is still allowed by current impl
    (WS_ROOT / "allowed").mkdir(exist_ok=True)
    (WS_ROOT / "blocked").mkdir(exist_ok=True)
    policy_json = '{"mode":"workspace-write","workspace_roots":[".\\\\allowed"]}'

    # Allowed: inside .\allowed (OK)
    rc, out, err = run_sbx(policy_json, ["cmd", "/c", "echo ok > allowed\\in_allowed.txt"], WS_ROOT)
    add("JSON WS: write in allowed/ OK", rc == 0 and (WS_ROOT / "allowed/in_allowed.txt").exists(), f"rc={rc}")

    # Outside CWD (deny)
    json_outside = OUTSIDE / "json_blocked.txt"; remove_if_exists(json_outside)
    rc, out, err = run_sbx(policy_json, ["cmd", "/c", f"echo nope > {json_outside}"], WS_ROOT)
    add("JSON WS: write outside allowed/ denied", rc != 0 and not json_outside.exists(), f"rc={rc}")

    # CWD is still allowed by current sandbox (documented behavior)
    rc, out, err = run_sbx(policy_json, ["cmd", "/c", "echo ok > cwd_ok_under_json.txt"], WS_ROOT)
    add("JSON WS: write in CWD allowed (by design)", rc == 0 and (WS_ROOT / "cwd_ok_under_json.txt").exists(), f"rc={rc}")

    # 24. WS: PS bytes write (OK)
    rc, out, err = run_sbx("workspace-write",
                           ["powershell", "-NoLogo", "-NoProfile", "-Command",
                            "[IO.File]::WriteAllBytes('bytes_ok.bin',[byte[]](0..255))"], WS_ROOT)
    add("WS: PS bytes write allowed", rc == 0 and (WS_ROOT / "bytes_ok.bin").exists(), f"rc={rc}")

    # 25. RO: PS bytes write denied
    rc, out, err = run_sbx("read-only",
                           ["powershell", "-NoLogo", "-NoProfile", "-Command",
                            "[IO.File]::WriteAllBytes('bytes_fail.bin',[byte[]](0..10))"], WS_ROOT)
    add("RO: PS bytes write denied", rc != 0 and not (WS_ROOT / "bytes_fail.bin").exists(), f"rc={rc}")

    # 26. WS: deep mkdir and write (OK)
    rc, out, err = run_sbx("workspace-write",
                           ["cmd", "/c", "mkdir deep\\nest && echo ok > deep\\nest\\f.txt"], WS_ROOT)
    add("WS: deep mkdir+write allowed", rc == 0 and (WS_ROOT / "deep/nest/f.txt").exists(), f"rc={rc}")

    # 27. WS: move (EXPECTED SUCCESS on this host)
    rc, out, err = run_sbx("workspace-write",
                           ["cmd", "/c", "echo x > m1.txt & move /y m1.txt m2.txt"], WS_ROOT)
    add("WS: move succeeds (expected on this host)", rc == 0 and (WS_ROOT / "m2.txt").exists(), f"rc={rc}, err={err}")

    # 28. RO: cmd redirection denied
    target = WS_ROOT / "cmd_ro.txt"; remove_if_exists(target)
    rc, out, err = run_sbx("read-only", ["cmd", "/c", "echo nope > cmd_ro.txt"], WS_ROOT)
    add("RO: cmd redirection denied", rc != 0 and not target.exists(), f"rc={rc}")

    return summarize(results)

if __name__ == "__main__":
    sys.exit(main())