JOJO
42cd99d2d8
- Windows 宿主机模式基于 WSL2 实现沙箱执行：只读/批准/自动审核识别、 工作区可写+区外只读挂载、网络档位（受限/开放/禁止）、敏感目录屏蔽 - 新增 scripts/setup-wsl-sandbox.ps1 一键准备 WSL 沙箱发行版 - 执行环境提示词按平台拆分骨架：prompts/execution_mode/macos.txt （原 execution_mode.txt，mac/dockerweb 沿用）与 windows.txt （骨架+动态注入环境与路径、当前规则、网络档位、切换一致性说明） - Windows 执行环境切换通知改为完整命令写法说明（双向），mac 保持原样 - 附调研与 PoC 验证报告：wsl2-sandbox-research.md、 windows-sandbox-research.md、wsl2-sandbox-poc-report.md
578 lines
20 KiB
Python
578 lines
20 KiB
Python
from __future__ import annotations
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import os
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import platform
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import re
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import shutil
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import subprocess
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from dataclasses import dataclass, field
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from pathlib import Path
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from typing import Dict, List, Optional, Tuple
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from modules.host_sandbox_policy import (
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get_macos_writable_paths,
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get_macos_deny_read_paths,
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get_macos_deny_read_regexes,
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get_windows_deny_read_paths,
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)
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@dataclass
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class SandboxPlan:
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command: List[str]
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env: Dict[str, str]
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cwd: Optional[str] = None
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seccomp_bpf_path: Optional[str] = None
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# 执行器需从 stderr 中过滤的行模式（如 wsl.exe 的 localhost 代理警告）
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stderr_ignore_regexes: List[str] = field(default_factory=list)
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class HostSandboxError(RuntimeError):
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pass
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# macOS 最小可读系统路径集合（Codex 风格 deny-default + allow-list）。
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# 当前仅作为常量保留，供后续需要严格 allow-list 的只读沙箱模式使用。
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# 当前只读沙箱采用“全局可读 + 敏感路径拒绝”模型，以保证工具兼容性。
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MACOS_MINIMAL_READABLE_PATHS = [
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"/bin",
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"/sbin",
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"/usr/bin",
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"/usr/sbin",
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"/usr/libexec",
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"/usr/lib",
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"/usr/share",
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"/usr/local/lib",
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"/opt/homebrew/lib",
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"/lib",
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"/etc",
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"/private/etc",
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"/tmp",
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"/private/tmp",
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"/var/tmp",
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"/private/var/tmp",
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"/var",
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"/private/var",
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"/dev",
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"/System/Library/Frameworks",
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"/System/Library/PrivateFrameworks",
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"/System/Library/SubFrameworks",
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"/System/Library/CoreServices",
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"/System/Library/Extensions",
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"/Library/Apple",
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"/Library/Preferences",
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"/Library/Filesystems/NetFSPlugins",
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"/Applications",
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]
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def _expand_path(raw: str) -> Optional[str]:
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"""展开路径中的 ~ 并返回绝对路径；无法展开时返回 None。"""
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if not raw:
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return None
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try:
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expanded = str(Path(raw).expanduser().resolve())
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except Exception:
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return None
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return expanded
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def _build_macos_read_rules(paths: List[str]) -> str:
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"""把路径列表转成 (allow file-read* (subpath ...)) 规则段。"""
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rules: List[str] = []
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seen: set[str] = set()
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for raw in paths:
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expanded = _expand_path(raw)
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if expanded and expanded not in seen:
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seen.add(expanded)
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rules.append(f'(allow file-read* (subpath "{expanded}"))')
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return "\n".join(rules)
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def _build_macos_deny_rules(paths: List[str]) -> str:
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"""把路径列表转成 (deny file-read* (subpath ...)) 规则段。"""
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rules: List[str] = []
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seen: set[str] = set()
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for raw in paths:
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expanded = _expand_path(raw)
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if expanded and expanded not in seen:
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seen.add(expanded)
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rules.append(f'(deny file-read* (subpath "{expanded}"))')
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return "\n".join(rules)
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def _build_macos_deny_regex_rules(patterns: List[str]) -> str:
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"""把正则列表转成 (deny file-read* (regex #"...")) 规则段。"""
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rules: List[str] = []
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for pattern in patterns:
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rules.append(f'(deny file-read* (regex #"{pattern}"))')
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return "\n".join(rules)
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# 宿主机网络权限档位
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NETWORK_PERMISSION_RESTRICTED = "restricted" # macOS: 仅本地回环；Linux/Windows: 暂不隔离
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NETWORK_PERMISSION_FULL = "full" # 完全开放
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NETWORK_PERMISSION_NONE = "none" # 完全禁止网络（后端保留）
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_NETWORK_PERMISSION_VALUES = {
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NETWORK_PERMISSION_RESTRICTED,
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NETWORK_PERMISSION_FULL,
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NETWORK_PERMISSION_NONE,
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}
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def _truthy(name: str, default: str = "1") -> bool:
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return os.environ.get(name, default).strip().lower() not in {"0", "false", "no", "off"}
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def host_sandbox_enabled() -> bool:
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return _truthy("HOST_SANDBOX_ENABLED", "1")
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def _normalize_network_permission(value: Optional[str]) -> str:
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"""归一化网络权限值，非法值回退为 restricted。"""
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normalized = str(value or "").strip().lower()
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if normalized in _NETWORK_PERMISSION_VALUES:
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return normalized
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return NETWORK_PERMISSION_RESTRICTED
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def _build_macos_network_policy(network_permission: str) -> str:
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"""根据网络权限档位生成 macOS sandbox-exec 网络规则片段。"""
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permission = _normalize_network_permission(network_permission)
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if permission == NETWORK_PERMISSION_NONE:
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return ""
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if permission == NETWORK_PERMISSION_FULL:
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return "(allow network-outbound)\n(allow network-inbound)\n"
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# restricted: 仅允许本地回环出站（涵盖 127.0.0.1 / ::1 的实际效果）
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return '(allow network-outbound (remote ip "localhost:*"))\n'
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def build_host_sandbox_plan(
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command: str,
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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system = platform.system()
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if system == "Darwin":
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return _build_macos_plan(command, work_path, env, network_permission)
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if system == "Linux":
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return _build_linux_plan(command, work_path, env, network_permission)
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if system == "Windows":
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return _build_windows_plan(command, work_path, env, network_permission)
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raise HostSandboxError(f"不支持的宿主机系统: {system}")
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def build_host_sandbox_readonly_plan(
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command: str,
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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system = platform.system()
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if system == "Darwin":
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return _build_macos_readonly_plan(command, work_path, env, network_permission)
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if system == "Linux":
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return _build_linux_readonly_plan(command, work_path, env, network_permission)
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if system == "Windows":
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return _build_windows_readonly_plan(command, work_path, env, network_permission)
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raise HostSandboxError(f"不支持的宿主机系统: {system}")
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def build_host_sandbox_shell_plan(
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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system = platform.system()
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if system == "Darwin":
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return _build_macos_shell_plan(work_path, env, network_permission)
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if system == "Linux":
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return _build_linux_shell_plan(work_path, env, network_permission)
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if system == "Windows":
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return _build_windows_shell_plan(work_path, env, network_permission)
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raise HostSandboxError(f"不支持的宿主机系统: {system}")
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def _build_macos_plan(
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command: str,
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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sandbox_exec = shutil.which("sandbox-exec")
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if not sandbox_exec:
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raise HostSandboxError("macOS 未找到 sandbox-exec，拒绝执行宿主机命令。")
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profile = _macos_profile_for_workspace(work_path, network_permission)
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cmd = [sandbox_exec, "-p", profile, "/bin/bash", "-lc", command]
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return SandboxPlan(command=cmd, env=env, cwd=str(work_path))
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def _build_macos_readonly_plan(
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command: str,
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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sandbox_exec = shutil.which("sandbox-exec")
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if not sandbox_exec:
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raise HostSandboxError("macOS 未找到 sandbox-exec，拒绝执行宿主机命令。")
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network_policy = _build_macos_network_policy(network_permission)
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workspace = str(work_path.resolve())
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# 只读沙箱：全局可读 + 敏感路径/文件拒绝，写权限仅 /dev/null。
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# 工作区在 deny 规则之后再显式 allow，保证“工作区内不受沙箱影响”。
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deny_rules = _build_macos_deny_rules(get_macos_deny_read_paths())
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regex_rules = _build_macos_deny_regex_rules(get_macos_deny_read_regexes())
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if regex_rules:
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deny_rules += "\n" + regex_rules
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profile = (
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'(version 1)\n'
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'(deny default)\n'
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'(allow sysctl-read)\n'
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'(allow process*)\n'
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f'{network_policy}'
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'(allow file-read*)\n'
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f'{deny_rules}\n'
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f'(allow file-read* (subpath "{workspace}"))\n'
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'(allow file-write* (literal "/dev/null"))'
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)
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cmd = [sandbox_exec, "-p", profile, "/bin/bash", "-lc", command]
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return SandboxPlan(command=cmd, env=env, cwd=str(work_path))
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def _build_macos_shell_plan(
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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sandbox_exec = shutil.which("sandbox-exec")
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if not sandbox_exec:
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raise HostSandboxError("macOS 未找到 sandbox-exec，拒绝启动宿主机沙箱终端。")
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profile = _macos_profile_for_workspace(work_path, network_permission)
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cmd = [sandbox_exec, "-p", profile, "/bin/bash", "-i"]
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return SandboxPlan(command=cmd, env=env, cwd=str(work_path))
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def _macos_profile_for_workspace(
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work_path: Path,
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network_permission: Optional[str] = None,
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) -> str:
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workspace = str(work_path.resolve())
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writable_paths = [workspace, "/tmp", "/private/tmp", "/dev/null"]
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for raw in get_macos_writable_paths():
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try:
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expanded = str(Path(raw).expanduser().resolve())
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except Exception:
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continue
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if expanded not in writable_paths:
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writable_paths.append(expanded)
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write_rules: list[str] = []
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for entry in writable_paths:
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if entry == "/dev/null":
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write_rules.append('(literal "/dev/null")')
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else:
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write_rules.append(f'(subpath "{entry}")')
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write_expr = " ".join(write_rules)
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network_policy = _build_macos_network_policy(network_permission)
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workspace = str(work_path.resolve())
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deny_rules = _build_macos_deny_rules(get_macos_deny_read_paths())
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regex_rules = _build_macos_deny_regex_rules(get_macos_deny_read_regexes())
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if regex_rules:
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deny_rules += "\n" + regex_rules
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return (
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'(version 1)\n'
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'(deny default)\n'
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'(allow sysctl-read)\n'
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'(allow process*)\n'
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f'{network_policy}'
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'(allow file-read*)\n'
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f'{deny_rules}\n'
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f'(allow file-read* (subpath "{workspace}"))\n'
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f'(allow file-write* {write_expr})'
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)
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def _build_linux_plan(
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command: str,
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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bwrap = shutil.which("bwrap")
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if not bwrap:
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raise HostSandboxError("Linux 未找到 bubblewrap(bwrap)，拒绝执行宿主机命令。")
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seccomp_bpf = os.environ.get("HOST_SANDBOX_LINUX_SECCOMP_BPF", "").strip()
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if not seccomp_bpf:
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raise HostSandboxError("Linux 缺少 HOST_SANDBOX_LINUX_SECCOMP_BPF，拒绝执行宿主机命令。")
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seccomp_path = Path(seccomp_bpf).expanduser().resolve()
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if not seccomp_path.exists():
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raise HostSandboxError(f"seccomp BPF 文件不存在: {seccomp_path}")
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shell_cmd = ["/bin/bash", "-lc", command]
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# network_permission 暂不参与 Linux 构建，保持现有 --share-net 行为
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return _build_linux_common_plan(work_path, env, shell_cmd, seccomp_path)
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def _build_linux_readonly_plan(
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command: str,
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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bwrap = shutil.which("bwrap")
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if not bwrap:
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raise HostSandboxError("Linux 未找到 bubblewrap(bwrap)，拒绝执行宿主机命令。")
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seccomp_bpf = os.environ.get("HOST_SANDBOX_LINUX_SECCOMP_BPF", "").strip()
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if not seccomp_bpf:
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raise HostSandboxError("Linux 缺少 HOST_SANDBOX_LINUX_SECCOMP_BPF，拒绝执行宿主机命令。")
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seccomp_path = Path(seccomp_bpf).expanduser().resolve()
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if not seccomp_path.exists():
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raise HostSandboxError(f"seccomp BPF 文件不存在: {seccomp_path}")
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shell_cmd = ["/bin/bash", "-lc", command]
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return _build_linux_common_plan(work_path, env, shell_cmd, seccomp_path, readonly=True)
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def _build_linux_shell_plan(
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work_path: Path,
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env: Dict[str, str],
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network_permission: Optional[str] = None,
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) -> SandboxPlan:
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bwrap = shutil.which("bwrap")
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if not bwrap:
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raise HostSandboxError("Linux 未找到 bubblewrap(bwrap)，拒绝启动宿主机沙箱终端。")
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seccomp_bpf = os.environ.get("HOST_SANDBOX_LINUX_SECCOMP_BPF", "").strip()
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if not seccomp_bpf:
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raise HostSandboxError("Linux 缺少 HOST_SANDBOX_LINUX_SECCOMP_BPF，拒绝启动宿主机沙箱终端。")
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seccomp_path = Path(seccomp_bpf).expanduser().resolve()
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if not seccomp_path.exists():
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raise HostSandboxError(f"seccomp BPF 文件不存在: {seccomp_path}")
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shell_cmd = ["/bin/bash", "-i"]
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return _build_linux_common_plan(work_path, env, shell_cmd, seccomp_path)
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def _build_linux_common_plan(
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work_path: Path,
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env: Dict[str, str],
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shell_cmd: List[str],
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seccomp_path: Path,
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readonly: bool = False,
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) -> SandboxPlan:
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bwrap = shutil.which("bwrap")
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if not bwrap:
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raise HostSandboxError("Linux 未找到 bubblewrap(bwrap)。")
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sandbox_root = str(work_path.resolve())
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cmd: List[str] = [
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bwrap,
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"--die-with-parent",
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"--new-session",
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"--unshare-all",
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"--share-net",
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"--ro-bind",
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"/",
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"/",
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]
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if readonly:
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cmd.extend(["--ro-bind", sandbox_root, sandbox_root])
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else:
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cmd.extend(["--bind", sandbox_root, sandbox_root])
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cmd.extend([
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"--chdir",
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sandbox_root,
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"--proc",
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"/proc",
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"--dev",
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"/dev",
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"--tmpfs",
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"/tmp",
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"--seccomp",
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"__SECCOMP_FD__",
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*shell_cmd,
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])
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return SandboxPlan(command=cmd, env=env, cwd=sandbox_root, seccomp_bpf_path=str(seccomp_path))
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# ──────────────────────────────────────────────────────────────
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# Windows：WSL2 + bubblewrap 沙箱
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#
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# 设计要点（依据 .wsl-poc 概念验证，见 wsl2-sandbox-poc-report.md）：
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# - 使用专用沙箱发行版（默认 astrion-sandbox），必须关闭 interop，
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# 否则沙箱内可经 cmd.exe 逃逸到 Windows 宿主机；
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# - 隔离原语与 Linux 方案同构：bwrap --unshare-all + ro-bind / + 工作区 bind；
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# - 网络档位：full → --share-net；restricted（仅回环）/ none → 不 share-net
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# （unshare-net 下 lo 自动可用，语义对齐 macOS 的 restricted）；
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# - 敏感路径用 --tmpfs（目录）/ --ro-bind /dev/null（文件）掩蔽；
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# - wsl.exe 的 localhost 代理警告经 stderr_ignore_regexes 由执行器过滤。
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# ──────────────────────────────────────────────────────────────
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WSL_DEFAULT_SANDBOX_DISTRO = "astrion-sandbox"
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_WSL_STDERR_IGNORE = [r"localhost 代理", r"localhost proxy"]
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# 模块级探测缓存：发行版名 -> 是否已验证可用
|
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_wsl_distro_verified: Dict[str, bool] = {}
|
||
|
||
|
||
def _wsl_distro_name() -> str:
|
||
return (os.environ.get("HOST_SANDBOX_WSL_DISTRO", "") or "").strip() or WSL_DEFAULT_SANDBOX_DISTRO
|
||
|
||
|
||
def _win_path_to_wsl(path) -> str:
|
||
"""Windows 路径转 WSL 路径：``E:\\a\\b`` → ``/mnt/e/a/b``。"""
|
||
raw = str(path)
|
||
m = re.match(r"^([A-Za-z]):[\\/](.*)$", raw)
|
||
if not m:
|
||
raise HostSandboxError(f"无法转换为 WSL 路径（仅支持盘符路径）: {raw}")
|
||
drive = m.group(1).lower()
|
||
rest = m.group(2).replace("\\", "/").rstrip("/")
|
||
return f"/mnt/{drive}/{rest}" if rest else f"/mnt/{drive}"
|
||
|
||
|
||
def _ensure_wsl_sandbox_distro() -> str:
|
||
"""探测专用沙箱发行版与 bwrap 是否可用，结果按发行版名缓存。"""
|
||
name = _wsl_distro_name()
|
||
if _wsl_distro_verified.get(name):
|
||
return name
|
||
wsl = shutil.which("wsl.exe")
|
||
if not wsl:
|
||
raise HostSandboxError("Windows 未找到 wsl.exe（WSL2），拒绝执行宿主机命令。")
|
||
env = dict(os.environ)
|
||
env["WSL_UTF8"] = "1"
|
||
setup_hint = (
|
||
f"未找到可用的 WSL 沙箱发行版 '{name}'。"
|
||
"请先运行 scripts/setup-wsl-sandbox.ps1 创建专用沙箱发行版"
|
||
"（必须关闭 interop，不可用 docker-desktop 或日常 Ubuntu 代替，"
|
||
"详见 wsl2-sandbox-poc-report.md）。"
|
||
)
|
||
try:
|
||
probe = subprocess.run(
|
||
[wsl, "-d", name, "-e", "true"],
|
||
capture_output=True, timeout=30, env=env,
|
||
)
|
||
except Exception as exc:
|
||
raise HostSandboxError(f"WSL 沙箱发行版探测失败: {exc}。{setup_hint}")
|
||
if probe.returncode != 0:
|
||
raise HostSandboxError(setup_hint)
|
||
try:
|
||
probe_bwrap = subprocess.run(
|
||
[wsl, "-d", name, "-e", "bwrap", "--version"],
|
||
capture_output=True, timeout=30, env=env,
|
||
)
|
||
except Exception as exc:
|
||
raise HostSandboxError(f"WSL 沙箱 bwrap 探测失败: {exc}。{setup_hint}")
|
||
if probe_bwrap.returncode != 0:
|
||
raise HostSandboxError(
|
||
f"WSL 沙箱发行版 '{name}' 内未安装 bubblewrap，请重新运行 "
|
||
"scripts/setup-wsl-sandbox.ps1 或在发行版内执行 apk add bubblewrap。"
|
||
)
|
||
_wsl_distro_verified[name] = True
|
||
return name
|
||
|
||
|
||
def _windows_deny_read_targets() -> List[Tuple[str, bool]]:
|
||
"""敏感路径掩蔽清单：返回 ``(wsl路径, 是否目录)``，仅包含实际存在的路径。"""
|
||
targets: List[Tuple[str, bool]] = []
|
||
for raw in get_windows_deny_read_paths():
|
||
try:
|
||
p = Path(raw).expanduser()
|
||
except Exception:
|
||
continue
|
||
if not p.is_absolute():
|
||
continue
|
||
try:
|
||
if p.is_dir():
|
||
targets.append((_win_path_to_wsl(p), True))
|
||
elif p.exists():
|
||
targets.append((_win_path_to_wsl(p), False))
|
||
except OSError:
|
||
continue
|
||
return targets
|
||
|
||
|
||
def _build_windows_bwrap_argv(
|
||
ws_wsl: str,
|
||
shell_cmd: List[str],
|
||
readonly: bool,
|
||
network_permission: Optional[str],
|
||
) -> List[str]:
|
||
permission = _normalize_network_permission(network_permission)
|
||
argv: List[str] = [
|
||
"bwrap",
|
||
"--die-with-parent",
|
||
"--new-session",
|
||
"--unshare-all",
|
||
]
|
||
# full → 共享网络；restricted（仅回环）与 none → unshare-net（lo 仍可用）
|
||
if permission == NETWORK_PERMISSION_FULL:
|
||
argv.append("--share-net")
|
||
argv += ["--ro-bind", "/", "/"]
|
||
argv += (["--ro-bind"] if readonly else ["--bind"]) + [ws_wsl, ws_wsl]
|
||
for target, is_dir in _windows_deny_read_targets():
|
||
argv += ["--tmpfs", target] if is_dir else ["--ro-bind", "/dev/null", target]
|
||
argv += [
|
||
"--chdir", ws_wsl,
|
||
"--proc", "/proc",
|
||
"--dev", "/dev",
|
||
"--tmpfs", "/tmp",
|
||
"--",
|
||
*shell_cmd,
|
||
]
|
||
return argv
|
||
|
||
|
||
def _build_windows_wsl_plan(
|
||
work_path: Path,
|
||
env: Dict[str, str],
|
||
shell_cmd: List[str],
|
||
readonly: bool,
|
||
network_permission: Optional[str],
|
||
) -> SandboxPlan:
|
||
wsl = shutil.which("wsl.exe")
|
||
if not wsl:
|
||
raise HostSandboxError("Windows 未找到 wsl.exe（WSL2），拒绝执行宿主机命令。")
|
||
distro = _ensure_wsl_sandbox_distro()
|
||
ws_wsl = _win_path_to_wsl(work_path.resolve())
|
||
argv = _build_windows_bwrap_argv(ws_wsl, shell_cmd, readonly, network_permission)
|
||
plan_env = dict(env or {})
|
||
plan_env["WSL_UTF8"] = "1"
|
||
return SandboxPlan(
|
||
command=[wsl, "-d", distro, "--", *argv],
|
||
env=plan_env,
|
||
cwd=str(work_path),
|
||
stderr_ignore_regexes=list(_WSL_STDERR_IGNORE),
|
||
)
|
||
|
||
|
||
def _build_windows_plan(
|
||
command: str,
|
||
work_path: Path,
|
||
env: Dict[str, str],
|
||
network_permission: Optional[str] = None,
|
||
) -> SandboxPlan:
|
||
return _build_windows_wsl_plan(
|
||
work_path, env, ["bash", "-lc", command], readonly=False,
|
||
network_permission=network_permission,
|
||
)
|
||
|
||
|
||
def _build_windows_readonly_plan(
|
||
command: str,
|
||
work_path: Path,
|
||
env: Dict[str, str],
|
||
network_permission: Optional[str] = None,
|
||
) -> SandboxPlan:
|
||
return _build_windows_wsl_plan(
|
||
work_path, env, ["bash", "-lc", command], readonly=True,
|
||
network_permission=network_permission,
|
||
)
|
||
|
||
|
||
def _build_windows_shell_plan(
|
||
work_path: Path,
|
||
env: Dict[str, str],
|
||
network_permission: Optional[str] = None,
|
||
) -> SandboxPlan:
|
||
return _build_windows_wsl_plan(
|
||
work_path, env, ["bash", "-i"], readonly=False,
|
||
network_permission=network_permission,
|
||
)
|