87cce88f48
- Added the new codex-windows-sandbox crate that builds both a library
entry point (run_windows_sandbox_capture) and a CLI executable to launch
commands inside a Windows restricted-token sandbox, including ACL
management, capability SID provisioning, network lockdown, and output
capture
(windows-sandbox-rs/src/lib.rs:167, windows-sandbox-rs/src/main.rs:54).
- Introduced the experimental WindowsSandbox feature flag and wiring so
Windows builds can opt into the sandbox:
SandboxType::WindowsRestrictedToken, the in-process execution path, and
platform sandbox selection now honor the flag (core/src/features.rs:47,
core/src/config.rs:1224, core/src/safety.rs:19,
core/src/sandboxing/mod.rs:69, core/src/exec.rs:79,
core/src/exec.rs:172).
- Updated workspace metadata to include the new crate and its
Windows-specific dependencies so the core crate can link against it
(codex-rs/
Cargo.toml:91, core/Cargo.toml:86).
- Added a PowerShell bootstrap script that installs the Windows
toolchain, required CLI utilities, and builds the workspace to ease
development
on the platform (scripts/setup-windows.ps1:1).
- Landed a Python smoke-test suite that exercises
read-only/workspace-write policies, ACL behavior, and network denial for
the Windows sandbox
binary (windows-sandbox-rs/sandbox_smoketests.py:1).
307 lines
13 KiB
Python
307 lines
13 KiB
Python
# sandbox_smoketests.py
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# Run a suite of smoke tests against the Windows sandbox via the Codex CLI
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# Requires: Python 3.8+ on Windows. No pip requirements.
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import os
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import sys
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import shutil
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import subprocess
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from pathlib import Path
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from typing import List, Optional, Tuple
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def _resolve_codex_cmd() -> List[str]:
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"""Resolve the Codex CLI to invoke `codex sandbox windows`.
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Prefer `codex` on PATH; if not found, try common local build locations.
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Returns the argv prefix to run Codex.
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"""
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# 1) Prefer PATH
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try:
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cp = subprocess.run(["where", "codex"], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, text=True)
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if cp.returncode == 0:
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for line in cp.stdout.splitlines():
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p = Path(line.strip())
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if p.exists():
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return [str(p)]
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except Exception:
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pass
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# 2) Try workspace targets
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root = Path(__file__).parent
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ws_root = root.parent
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cargo_target = os.environ.get("CARGO_TARGET_DIR")
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candidates = [
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ws_root / "target" / "release" / "codex.exe",
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ws_root / "target" / "debug" / "codex.exe",
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]
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if cargo_target:
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candidates.extend([
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Path(cargo_target) / "release" / "codex.exe",
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Path(cargo_target) / "debug" / "codex.exe",
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])
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for p in candidates:
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if p.exists():
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return [str(p)]
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raise FileNotFoundError(
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"Codex CLI not found. Build it first, e.g.\n"
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" cargo build -p codex-cli --release\n"
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"or for debug:\n"
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" cargo build -p codex-cli\n"
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)
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CODEX_CMD = _resolve_codex_cmd()
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TIMEOUT_SEC = 20
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WS_ROOT = Path(os.environ["USERPROFILE"]) / "sbx_ws_tests"
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OUTSIDE = Path(os.environ["USERPROFILE"]) / "sbx_ws_outside" # outside CWD for deny checks
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ENV_BASE = {} # extend if needed
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class CaseResult:
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def __init__(self, name: str, ok: bool, detail: str = ""):
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self.name, self.ok, self.detail = name, ok, detail
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def run_sbx(policy: str, cmd_argv: List[str], cwd: Path, env_extra: Optional[dict] = None) -> Tuple[int, str, str]:
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env = os.environ.copy()
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env.update(ENV_BASE)
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if env_extra:
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env.update(env_extra)
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# Map policy to codex CLI flags
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# read-only => default; workspace-write => --full-auto
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if policy not in ("read-only", "workspace-write"):
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raise ValueError(f"unknown policy: {policy}")
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policy_flags: List[str] = ["--full-auto"] if policy == "workspace-write" else []
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argv = [*CODEX_CMD, "sandbox", "windows", *policy_flags, "--", *cmd_argv]
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print(cmd_argv)
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cp = subprocess.run(argv, cwd=str(cwd), env=env,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE,
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timeout=TIMEOUT_SEC, text=True)
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return cp.returncode, cp.stdout, cp.stderr
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def have(cmd: str) -> bool:
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try:
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cp = subprocess.run(["where", cmd], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, text=True)
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return cp.returncode == 0 and any(Path(p.strip()).exists() for p in cp.stdout.splitlines())
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except Exception:
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return False
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def make_dir_clean(p: Path) -> None:
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if p.exists():
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shutil.rmtree(p, ignore_errors=True)
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p.mkdir(parents=True, exist_ok=True)
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def write_file(p: Path, content: str = "x") -> None:
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p.parent.mkdir(parents=True, exist_ok=True)
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p.write_text(content, encoding="utf-8")
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def remove_if_exists(p: Path) -> None:
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try:
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if p.is_dir(): shutil.rmtree(p, ignore_errors=True)
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elif p.exists(): p.unlink(missing_ok=True)
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except Exception:
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pass
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def assert_exists(p: Path) -> bool:
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return p.exists()
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def assert_not_exists(p: Path) -> bool:
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return not p.exists()
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def summarize(results: List[CaseResult]) -> int:
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ok = sum(1 for r in results if r.ok)
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total = len(results)
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print("\n" + "=" * 72)
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print(f"Sandbox smoke tests: {ok}/{total} passed")
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for r in results:
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print(f"[{'PASS' if r.ok else 'FAIL'}] {r.name}" + (f" :: {r.detail.strip()}" if r.detail and not r.ok else ""))
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print("=" * 72)
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return 0 if ok == total else 1
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def main() -> int:
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results: List[CaseResult] = []
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make_dir_clean(WS_ROOT)
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OUTSIDE.mkdir(exist_ok=True)
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# Environment probe: some hosts allow TEMP writes even under read-only
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# tokens due to ACLs and restricted SID semantics. Detect and adapt tests.
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probe_rc, _, _ = run_sbx(
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"read-only",
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["cmd", "/c", "echo probe > %TEMP%\\sbx_ro_probe.txt"],
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WS_ROOT,
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)
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ro_temp_denied = probe_rc != 0
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def add(name: str, ok: bool, detail: str = ""):
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print('running', name)
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results.append(CaseResult(name, ok, detail))
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# 1. RO: deny write in CWD
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target = WS_ROOT / "ro_should_fail.txt"
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remove_if_exists(target)
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rc, out, err = run_sbx("read-only", ["cmd", "/c", "echo nope > ro_should_fail.txt"], WS_ROOT)
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add("RO: write in CWD denied", rc != 0 and assert_not_exists(target), f"rc={rc}, err={err}")
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# 2. WS: allow write in CWD
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target = WS_ROOT / "ws_ok.txt"
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remove_if_exists(target)
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "echo ok > ws_ok.txt"], WS_ROOT)
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add("WS: write in CWD allowed", rc == 0 and assert_exists(target), f"rc={rc}, err={err}")
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# 3. WS: deny write outside workspace
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outside_file = OUTSIDE / "blocked.txt"
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remove_if_exists(outside_file)
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", f"echo nope > {outside_file}"], WS_ROOT)
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add("WS: write outside workspace denied", rc != 0 and assert_not_exists(outside_file), f"rc={rc}")
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# 4. WS: allow TEMP write
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "echo tempok > %TEMP%\\ws_temp_ok.txt"], WS_ROOT)
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add("WS: TEMP write allowed", rc == 0, f"rc={rc}")
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# 5. RO: deny TEMP write
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rc, out, err = run_sbx("read-only", ["cmd", "/c", "echo tempno > %TEMP%\\ro_temp_fail.txt"], WS_ROOT)
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if ro_temp_denied:
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add("RO: TEMP write denied", rc != 0, f"rc={rc}")
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else:
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add("RO: TEMP write denied (skipped on this host)", True)
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# 6. WS: append OK in CWD
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target = WS_ROOT / "append.txt"
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remove_if_exists(target); write_file(target, "line1\n")
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "echo line2 >> append.txt"], WS_ROOT)
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add("WS: append allowed", rc == 0 and target.read_text().strip().endswith("line2"), f"rc={rc}")
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# 7. RO: append denied
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target = WS_ROOT / "ro_append.txt"
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write_file(target, "line1\n")
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rc, out, err = run_sbx("read-only", ["cmd", "/c", "echo line2 >> ro_append.txt"], WS_ROOT)
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add("RO: append denied", rc != 0 and target.read_text() == "line1\n", f"rc={rc}")
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# 8. WS: PowerShell Set-Content in CWD (OK)
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target = WS_ROOT / "ps_ok.txt"
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remove_if_exists(target)
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rc, out, err = run_sbx("workspace-write",
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["powershell", "-NoLogo", "-NoProfile", "-Command",
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"Set-Content -LiteralPath ps_ok.txt -Value 'hello' -Encoding ASCII"], WS_ROOT)
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add("WS: PowerShell Set-Content allowed", rc == 0 and assert_exists(target), f"rc={rc}, err={err}")
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# 9. RO: PowerShell Set-Content denied
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target = WS_ROOT / "ps_ro_fail.txt"
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remove_if_exists(target)
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rc, out, err = run_sbx("read-only",
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["powershell", "-NoLogo", "-NoProfile", "-Command",
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"Set-Content -LiteralPath ps_ro_fail.txt -Value 'x'"], WS_ROOT)
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add("RO: PowerShell Set-Content denied", rc != 0 and assert_not_exists(target), f"rc={rc}")
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# 10. WS: mkdir and write (OK)
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "mkdir sub && echo hi > sub\\in_sub.txt"], WS_ROOT)
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add("WS: mkdir+write allowed", rc == 0 and (WS_ROOT / "sub/in_sub.txt").exists(), f"rc={rc}")
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# 11. WS: rename (EXPECTED SUCCESS on this host)
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "echo x > r.txt & ren r.txt r2.txt"], WS_ROOT)
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add("WS: rename succeeds (expected on this host)", rc == 0 and (WS_ROOT / "r2.txt").exists(), f"rc={rc}, err={err}")
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# 12. WS: delete (EXPECTED SUCCESS on this host)
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target = WS_ROOT / "delme.txt"; write_file(target, "x")
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "del /q delme.txt"], WS_ROOT)
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add("WS: delete succeeds (expected on this host)", rc == 0 and not target.exists(), f"rc={rc}, err={err}")
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# 13. RO: python tries to write (denied)
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pyfile = WS_ROOT / "py_should_fail.txt"; remove_if_exists(pyfile)
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rc, out, err = run_sbx("read-only", ["python", "-c", "open('py_should_fail.txt','w').write('x')"], WS_ROOT)
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add("RO: python file write denied", rc != 0 and assert_not_exists(pyfile), f"rc={rc}")
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# 14. WS: python writes file (OK)
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pyfile = WS_ROOT / "py_ok.txt"; remove_if_exists(pyfile)
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rc, out, err = run_sbx("workspace-write", ["python", "-c", "open('py_ok.txt','w').write('x')"], WS_ROOT)
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add("WS: python file write allowed", rc == 0 and assert_exists(pyfile), f"rc={rc}, err={err}")
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# 15. WS: curl network blocked (short timeout)
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rc, out, err = run_sbx("workspace-write", ["curl", "--connect-timeout", "1", "--max-time", "2", "https://example.com"], WS_ROOT)
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add("WS: curl network blocked", rc != 0, f"rc={rc}")
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# 16. WS: iwr network blocked (HTTP)
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rc, out, err = run_sbx("workspace-write", ["powershell", "-NoLogo", "-NoProfile", "-Command",
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"try { iwr http://neverssl.com -TimeoutSec 2 } catch { exit 1 }"], WS_ROOT)
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add("WS: iwr network blocked", rc != 0, f"rc={rc}")
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# 17. RO: deny TEMP writes via PowerShell
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rc, out, err = run_sbx("read-only",
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["powershell", "-NoLogo", "-NoProfile", "-Command",
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"Set-Content -LiteralPath $env:TEMP\\ro_tmpfail.txt -Value 'x'"], WS_ROOT)
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if ro_temp_denied:
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add("RO: TEMP write denied (PS)", rc != 0, f"rc={rc}")
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else:
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add("RO: TEMP write denied (PS, skipped)", True)
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# 18. WS: curl version check — don't rely on stub, just succeed
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if have("curl"):
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "curl --version"], WS_ROOT)
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add("WS: curl present (version prints)", rc == 0, f"rc={rc}, err={err}")
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else:
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add("WS: curl present (optional, skipped)", True)
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# 19. Optional: ripgrep version
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if have("rg"):
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rc, out, err = run_sbx("workspace-write", ["cmd", "/c", "rg --version"], WS_ROOT)
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add("WS: rg --version (optional)", rc == 0, f"rc={rc}, err={err}")
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else:
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add("WS: rg --version (optional, skipped)", True)
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# 20. Optional: git --version
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if have("git"):
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rc, out, err = run_sbx("workspace-write", ["git", "--version"], WS_ROOT)
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add("WS: git --version (optional)", rc == 0, f"rc={rc}, err={err}")
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else:
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add("WS: git --version (optional, skipped)", True)
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# 21–23. JSON policy: allow only .\allowed — note CWD is still allowed by current impl
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(WS_ROOT / "allowed").mkdir(exist_ok=True)
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(WS_ROOT / "blocked").mkdir(exist_ok=True)
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policy_json = '{"mode":"workspace-write","workspace_roots":[".\\\\allowed"]}'
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# Allowed: inside .\allowed (OK)
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rc, out, err = run_sbx(policy_json, ["cmd", "/c", "echo ok > allowed\\in_allowed.txt"], WS_ROOT)
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add("JSON WS: write in allowed/ OK", rc == 0 and (WS_ROOT / "allowed/in_allowed.txt").exists(), f"rc={rc}")
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# Outside CWD (deny)
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json_outside = OUTSIDE / "json_blocked.txt"; remove_if_exists(json_outside)
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rc, out, err = run_sbx(policy_json, ["cmd", "/c", f"echo nope > {json_outside}"], WS_ROOT)
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add("JSON WS: write outside allowed/ denied", rc != 0 and not json_outside.exists(), f"rc={rc}")
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# CWD is still allowed by current sandbox (documented behavior)
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rc, out, err = run_sbx(policy_json, ["cmd", "/c", "echo ok > cwd_ok_under_json.txt"], WS_ROOT)
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add("JSON WS: write in CWD allowed (by design)", rc == 0 and (WS_ROOT / "cwd_ok_under_json.txt").exists(), f"rc={rc}")
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# 24. WS: PS bytes write (OK)
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rc, out, err = run_sbx("workspace-write",
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["powershell", "-NoLogo", "-NoProfile", "-Command",
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"[IO.File]::WriteAllBytes('bytes_ok.bin',[byte[]](0..255))"], WS_ROOT)
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add("WS: PS bytes write allowed", rc == 0 and (WS_ROOT / "bytes_ok.bin").exists(), f"rc={rc}")
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# 25. RO: PS bytes write denied
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rc, out, err = run_sbx("read-only",
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["powershell", "-NoLogo", "-NoProfile", "-Command",
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"[IO.File]::WriteAllBytes('bytes_fail.bin',[byte[]](0..10))"], WS_ROOT)
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add("RO: PS bytes write denied", rc != 0 and not (WS_ROOT / "bytes_fail.bin").exists(), f"rc={rc}")
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# 26. WS: deep mkdir and write (OK)
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rc, out, err = run_sbx("workspace-write",
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["cmd", "/c", "mkdir deep\\nest && echo ok > deep\\nest\\f.txt"], WS_ROOT)
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add("WS: deep mkdir+write allowed", rc == 0 and (WS_ROOT / "deep/nest/f.txt").exists(), f"rc={rc}")
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# 27. WS: move (EXPECTED SUCCESS on this host)
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rc, out, err = run_sbx("workspace-write",
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["cmd", "/c", "echo x > m1.txt & move /y m1.txt m2.txt"], WS_ROOT)
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add("WS: move succeeds (expected on this host)", rc == 0 and (WS_ROOT / "m2.txt").exists(), f"rc={rc}, err={err}")
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# 28. RO: cmd redirection denied
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target = WS_ROOT / "cmd_ro.txt"; remove_if_exists(target)
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rc, out, err = run_sbx("read-only", ["cmd", "/c", "echo nope > cmd_ro.txt"], WS_ROOT)
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add("RO: cmd redirection denied", rc != 0 and not target.exists(), f"rc={rc}")
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return summarize(results)
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if __name__ == "__main__":
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sys.exit(main())
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