494 lines
21 KiB
Python
494 lines
21 KiB
Python
"""
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pipeline_service/work_env.py - 工作环境管理（沙箱的本地/远程切换 + 目录迁移）
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工作环境以「用户 / 机构」为单位组织，缺省本地模式（bwrap 沙箱）。
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远程模式 = 免密 SSH 到其他主机，远程主机同样部署 bwrap 走沙箱。
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目录层级约定：项目目录位于「工作目录」（逻辑账号 deploy_dir）之下，
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所以迁移只需同步工作目录顶层，即可覆盖所有项目内容。
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- get_work_env: 查询用户/机构工作环境（user 优先 → org 兜底 → 缺省 local）
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- set_work_env: 设置工作环境（切换 mode 时触发目录迁移）
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- migrate_work_dir: 目录迁移（rsync 本地 deploy_dir ↔ 远程 remote_dir）
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- run_remote_sandbox: 远程免密 SSH + bwrap 沙箱执行
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"""
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import os
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import re
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import shlex
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import shutil
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import asyncio
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import logging
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import subprocess
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logger = logging.getLogger("pipeline.work_env")
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from .deploy_account import (
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BWRAP, deploy_dir_for, sanitize_username, account_name_for,
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)
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# rsync 可执行文件（迁移必需）
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RSYNC = shutil.which("rsync")
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def _row_to_env(row) -> dict:
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"""DB 行 → 工作环境 dict。"""
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return {
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"mode": getattr(row, "mode", "local") or "local",
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"remote_host": getattr(row, "remote_host", "") or "",
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"remote_port": getattr(row, "remote_port", 22) or 22,
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"remote_user": getattr(row, "remote_user", "") or "",
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"remote_key_path": getattr(row, "remote_key_path", "") or "",
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"remote_dir": getattr(row, "remote_dir", "") or "",
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}
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async def get_work_env(sor, user_id: str, org_id: str = "") -> dict:
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"""获取工作环境。优先级：user 级 → org 级 → 缺省 local。"""
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if user_id:
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recs = await sor.sqlExe(
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"SELECT * FROM sd_work_envs WHERE owner_type='user' AND owner_id=${o}$ LIMIT 1",
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{"o": user_id})
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if recs:
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return _row_to_env(recs[0])
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if org_id:
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recs = await sor.sqlExe(
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"SELECT * FROM sd_work_envs WHERE owner_type='org' AND owner_id=${o}$ LIMIT 1",
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{"o": org_id})
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if recs:
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return _row_to_env(recs[0])
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return {"mode": "local", "remote_host": "", "remote_port": 22,
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"remote_user": "", "remote_key_path": "", "remote_dir": ""}
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def _ssh_target(env: dict) -> str:
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"""构造 scp/rsync 的 user@host 目标。"""
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user = env.get("remote_user", "")
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host = env.get("remote_host", "")
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if user:
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return f"{user}@{host}"
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return host
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def _ssh_common_args(env: dict) -> list:
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"""ssh/scp/rsync 共用的 SSH 参数。
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StrictHostKeyChecking=accept-new：首次连接记录 host key，之后严格校验，
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防 MITM（host key 变化会拒绝），替代原来的 =no（完全不校验）。
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"""
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args = ["-o", "StrictHostKeyChecking=accept-new", "-o", "ConnectTimeout=10"]
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key = env.get("remote_key_path", "")
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if key:
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args += ["-i", key]
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port = env.get("remote_port", 22) or 22
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args += ["-p", str(port)]
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return args
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# ── 机构独立 SSH key（每机构一把，防单点泄露） ────────────────
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SSH_KEYS_DIR = os.path.expanduser("~/.ssh/org_keys")
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def _org_key_dir(org_id: str) -> str:
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"""机构 key 目录（org_id sanitize 防路径穿越）。"""
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safe = re.sub(r"[^a-zA-Z0-9_-]", "_", org_id or "")
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if not safe:
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safe = "_"
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return os.path.join(SSH_KEYS_DIR, safe)
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def ensure_org_key(org_id: str) -> dict:
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"""确保机构有独立 SSH key pair（ed25519），没有则生成。
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Returns: {"key_path", "pubkey_path", "pubkey"}
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"""
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d = _org_key_dir(org_id)
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os.makedirs(d, mode=0o700, exist_ok=True)
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priv = os.path.join(d, "id_ed25519")
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pub = priv + ".pub"
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if not (os.path.exists(priv) and os.path.exists(pub)):
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subprocess.run(
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["ssh-keygen", "-t", "ed25519", "-N", "", "-f", priv,
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"-C", "pipeline-org-" + (re.sub(r"[^a-zA-Z0-9_-]", "_", org_id) or "_")],
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check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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os.chmod(priv, 0o600)
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pubkey = ""
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if os.path.exists(pub):
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with open(pub, "r", encoding="utf-8") as f:
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pubkey = f.read().strip()
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return {"key_path": priv, "pubkey_path": pub, "pubkey": pubkey}
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def get_org_pubkey(org_id: str) -> dict:
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"""获取机构 public key（供 admin 复制到远程主机 authorized_keys）。"""
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info = ensure_org_key(org_id)
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return {"ok": True, "org_id": org_id, "pubkey": info["pubkey"],
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"key_path": info["key_path"]}
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# ── 远程配置安全校验 ───────────────────────────────────────
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# 复制粘贴易带入的不可见字符：零宽空格/连字符/BOM 等，str.strip() 去不掉（非 isspace）
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_INVISIBLE_RE = re.compile(r"[\s\u200b\u200c\u200d\u2060\ufeff]+")
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def _clean_field(s) -> str:
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"""清理字段：去所有空白（含 Unicode）与零宽/BOM 不可见字符。"""
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return _INVISIBLE_RE.sub("", s or "")
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_HOST_RE = re.compile(r"^[a-zA-Z0-9]([a-zA-Z0-9\-\.]*[a-zA-Z0-9])?$")
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_USER_RE = re.compile(r"^[a-zA-Z0-9._-]+$")
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# remote_dir 现在是相对路径（从远程登录用户的 home 目录开始）。
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# 相对路径天然限制在 home 内，无需系统目录黑名单，只需防路径穿越（..）与 shell 注入。
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_REL_DIR_RE = re.compile(r"^[a-zA-Z0-9._/-]+$")
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def _rel_remote_dir(remote_dir: str) -> str:
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"""规范化相对路径（strip 前后 /），返回纯相对路径（不含 ~，避免 shlex.quote 后 ~ 不展开）。"""
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return (remote_dir or "").strip().strip("/")
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def _validate_remote_dir(remote_dir: str) -> str:
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"""校验 remote_dir（相对路径），返回错误消息（None 表示通过）。"""
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d = _clean_field(remote_dir)
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if not d:
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return "缺少 remote_dir"
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if d.startswith("/"):
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return "remote_dir 必须是相对路径（从远程用户 home 目录开始）"
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parts = [p for p in d.split("/") if p]
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if ".." in parts:
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return "remote_dir 不能包含 .."
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if not parts:
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return "remote_dir 不能为空"
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if not _REL_DIR_RE.match(d):
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return "remote_dir 只能含字母数字和 . _ - / 字符"
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return None
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def _validate_remote(remote_config: dict) -> str:
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"""校验远程配置，返回错误消息（None 表示通过）。
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防注入（host/user/port）与防破坏（remote_dir 不能是系统目录、
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remote_key_path 不能读任意私钥文件）。
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"""
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host = _clean_field(remote_config.get("remote_host"))
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if not host:
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return "缺少 remote_host"
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# 允许主机名/IPv4；IPv6 用 [] 包裹后取内部
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_host = host[1:-1] if host.startswith("[") and host.endswith("]") else host
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if not _HOST_RE.match(_host):
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return "remote_host 格式非法"
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user = _clean_field(remote_config.get("remote_user"))
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if not user:
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return "缺少 remote_user"
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if not _USER_RE.match(user):
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return "remote_user 格式非法"
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try:
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port = int(remote_config.get("remote_port", 22) or 22)
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if not (1 <= port <= 65535):
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return "remote_port 必须在 1-65535"
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except (ValueError, TypeError):
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return "remote_port 必须是数字"
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err = _validate_remote_dir(remote_config.get("remote_dir", ""))
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if err:
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return err
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key = (remote_config.get("remote_key_path") or "").strip()
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if key:
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ssh_dir = os.path.expanduser("~/.ssh")
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if key.startswith("/"):
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# 绝对路径必须位于 ~/.ssh/ 下，防读任意私钥
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if not key.startswith(ssh_dir.rstrip("/") + "/"):
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return "remote_key_path 必须位于 ~/.ssh/ 目录下"
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elif "/" in key or key.startswith(".."):
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return "remote_key_path 必须是 ~/.ssh/ 下的文件名"
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return None
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# ═══════════════════════════════════════════════════════════
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# 目录迁移
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# ═══════════════════════════════════════════════════════════
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async def _remote_mkdir(env: dict, remote_dir: str) -> bool:
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"""远程 mkdir -p（相对路径可能多级，rsync 不会递归建父目录）。失败返回 False。
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remote_dir 已校验为安全字符（_REL_DIR_RE），用 $HOME 拼接让远程 shell 展开
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（不用 ~ 前缀，因 shlex.quote 会把 ~ 包进单引号导致不展开）。
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"""
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try:
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target = _ssh_target(env)
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ssh_cmd = ["ssh"] + _ssh_common_args(env) + [target, 'mkdir -p "$HOME/' + remote_dir + '"']
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proc = await asyncio.create_subprocess_exec(
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*ssh_cmd, stdout=asyncio.subprocess.DEVNULL, stderr=asyncio.subprocess.DEVNULL)
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await asyncio.wait_for(proc.communicate(), timeout=30)
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return proc.returncode == 0
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except Exception:
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return False
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async def migrate_work_dir(account_name: str, from_mode: str, to_mode: str, env: dict) -> dict:
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"""把工作目录内容从旧环境迁移到新环境。
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from_mode/to_mode ∈ {'local', 'remote'}
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- local → remote: rsync 本地 deploy_dir → remote_dir
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- remote → local: rsync remote_dir → 本地 deploy_dir
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"""
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local_dir = deploy_dir_for(account_name)
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if to_mode == "local" and not os.path.isdir(local_dir):
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os.makedirs(local_dir, exist_ok=True)
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if not RSYNC:
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return {"ok": False, "error": "rsync 不可用，无法迁移"}
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# remote_dir 安全校验（纵深防御：DB 脏数据/历史记录也拦一道）
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if from_mode == "remote" or to_mode == "remote":
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err = _validate_remote_dir(env.get("remote_dir", ""))
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if err:
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return {"ok": False, "error": err}
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# 构造 rsync 命令
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try:
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if from_mode == "local" and to_mode == "remote":
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# 本地 → 远程
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remote_dir = env.get("remote_dir", "")
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if not remote_dir:
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return {"ok": False, "error": "缺少远程目录 remote_dir"}
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await _remote_mkdir(env, _rel_remote_dir(remote_dir))
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target = _ssh_target(env) + ":~/" + _rel_remote_dir(remote_dir)
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cmd = ["rsync", "-az", "--delete", "-e",
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"ssh " + " ".join(_ssh_common_args(env)),
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local_dir.rstrip("/") + "/", target.rstrip("/") + "/"]
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elif from_mode == "remote" and to_mode == "local":
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# 远程 → 本地
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remote_dir = env.get("remote_dir", "")
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if not remote_dir:
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return {"ok": False, "error": "缺少远程目录 remote_dir"}
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src = _ssh_target(env) + ":~/" + _rel_remote_dir(remote_dir)
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cmd = ["rsync", "-az", "--delete", "-e",
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"ssh " + " ".join(_ssh_common_args(env)),
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src.rstrip("/") + "/", local_dir.rstrip("/") + "/"]
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else:
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# 同模式或无效，无需迁移
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return {"ok": True, "migrated": False}
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proc = await asyncio.create_subprocess_exec(
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*cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE)
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stdout, stderr = await asyncio.wait_for(proc.communicate(), timeout=300)
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if proc.returncode != 0:
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return {"ok": False, "error": "迁移失败: " + stderr.decode("utf-8", "replace")[-1000:]}
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return {"ok": True, "migrated": True,
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"detail": stdout.decode("utf-8", "replace")[-500:]}
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except asyncio.TimeoutError:
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return {"ok": False, "error": "迁移超时（300s）"}
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except Exception as e:
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return {"ok": False, "error": str(e)[:500]}
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# ═══════════════════════════════════════════════════════════
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# 设置工作环境
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# ═══════════════════════════════════════════════════════════
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async def set_work_env(sor, owner_type: str, owner_id: str, mode: str,
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remote_config: dict = None, account_name: str = None) -> dict:
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"""设置工作环境。切换 mode 时触发目录迁移。
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Returns: {"ok": bool, "mode": str, "migrated": {...}}
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"""
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if owner_type not in ("user", "org"):
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return {"ok": False, "error": "owner_type 必须是 user 或 org"}
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if mode not in ("local", "remote"):
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return {"ok": False, "error": "mode 必须是 local 或 remote"}
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remote_config = remote_config or {}
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if owner_type == "org" and mode == "remote":
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# 机构级远程：自动使用机构独立 key（每机构一把，防单点泄露），
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# 不允许 admin 指定任意 key
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_key_info = ensure_org_key(owner_id)
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remote_config["remote_key_path"] = _key_info["key_path"]
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if mode == "remote":
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err = _validate_remote(remote_config)
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if err:
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return {"ok": False, "error": err}
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# 查旧环境（完整记录，迁移时需要用旧的远程配置）
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old_recs = await sor.sqlExe(
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"SELECT * FROM sd_work_envs WHERE owner_type=${t}$ AND owner_id=${o}$ LIMIT 1",
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{"t": owner_type, "o": owner_id})
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old_mode = getattr(old_recs[0], "mode", "local") if old_recs else "local"
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old_env = _row_to_env(old_recs[0]) if old_recs else None
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# upsert
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from appPublic.uniqueID import getID
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data = {
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"owner_type": owner_type,
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"owner_id": owner_id,
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"mode": mode,
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"remote_host": remote_config.get("remote_host", ""),
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"remote_port": int(remote_config.get("remote_port", 22) or 22),
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"remote_user": remote_config.get("remote_user", ""),
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"remote_key_path": remote_config.get("remote_key_path", ""),
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"remote_dir": remote_config.get("remote_dir", ""),
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}
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# 先迁移（切换模式时），成功后再更新 DB（保证状态一致，迁移失败不回写 mode）
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migrated = {"migrated": False}
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if account_name and old_mode != mode:
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# remote → local 用旧的远程配置；local → remote 用新的远程配置
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if old_mode == "remote" and mode == "local":
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migrate_env = old_env or _row_to_env_from_dict(data)
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else:
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migrate_env = _row_to_env_from_dict(data)
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migrated = await migrate_work_dir(account_name, old_mode, mode, migrate_env)
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if not migrated.get("ok"):
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return {"ok": False, "error": "迁移失败，未切换模式: " + migrated.get("error", ""),
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"migration": migrated}
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# upsert（迁移成功后才写 DB）
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if old_recs:
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await sor.sqlExe(
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"UPDATE sd_work_envs SET mode=${mode}$, remote_host=${h}$, remote_port=${p}$, "
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"remote_user=${u}$, remote_key_path=${k}$, remote_dir=${d}$ "
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"WHERE owner_type=${t}$ AND owner_id=${o}$",
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{"mode": mode, "h": data["remote_host"], "p": data["remote_port"],
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"u": data["remote_user"], "k": data["remote_key_path"],
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"d": data["remote_dir"], "t": owner_type, "o": owner_id})
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else:
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data["id"] = getID()
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await sor.C("sd_work_envs", data)
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return {"ok": True, "mode": mode, "old_mode": old_mode, "migration": migrated}
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def _row_to_env_from_dict(data: dict) -> dict:
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return {
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"mode": data.get("mode", "local"),
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"remote_host": data.get("remote_host", ""),
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"remote_port": data.get("remote_port", 22),
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"remote_user": data.get("remote_user", ""),
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"remote_key_path": data.get("remote_key_path", ""),
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"remote_dir": data.get("remote_dir", ""),
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}
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# ═══════════════════════════════════════════════════════════
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# 远程沙箱执行
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# ═══════════════════════════════════════════════════════════
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def _bwrap_static_args() -> list:
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"""bwrap 沙箱固定参数（不含 --bind 目录和 command，由调用方拼接）。"""
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return [
|
||
"--unshare-user", "--unshare-pid", "--unshare-ipc", "--unshare-uts",
|
||
"--die-with-parent",
|
||
"--ro-bind", "/usr", "/usr",
|
||
"--ro-bind", "/bin", "/bin",
|
||
"--ro-bind", "/sbin", "/sbin",
|
||
"--ro-bind", "/lib", "/lib",
|
||
"--ro-bind", "/lib64", "/lib64",
|
||
"--ro-bind", "/etc", "/etc",
|
||
"--proc", "/proc",
|
||
"--dev", "/dev",
|
||
"--tmpfs", "/tmp",
|
||
]
|
||
|
||
|
||
async def run_remote_sandbox(env: dict, deploy_dir: str, command: str,
|
||
workdir: str = "", timeout: int = 120) -> dict:
|
||
"""远程免密 SSH + bwrap 沙箱执行命令。"""
|
||
ssh_args = _ssh_common_args(env)
|
||
target = _ssh_target(env)
|
||
|
||
# deploy_dir 是相对路径（已校验安全字符），用 $HOME 拼接让远程 shell 展开
|
||
rel = _rel_remote_dir(deploy_dir)
|
||
inner = ('BW=$(command -v bwrap 2>/dev/null || echo "$HOME/bin/bwrap"); '
|
||
'RD="$HOME/' + rel + '"; '
|
||
'exec "$BW" ' + " ".join(_bwrap_static_args()) + ' '
|
||
'--bind "$RD" /home --chdir /home --setenv HOME /home '
|
||
'-- bash -c ' + shlex.quote(command))
|
||
|
||
ssh_cmd = ["ssh"] + ssh_args + [target, inner]
|
||
|
||
try:
|
||
proc = await asyncio.create_subprocess_exec(
|
||
*ssh_cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE)
|
||
stdout, stderr = await asyncio.wait_for(proc.communicate(), timeout=timeout + 30)
|
||
except asyncio.TimeoutError:
|
||
return {"rc": -1, "stdout": "", "stderr": f"远程命令超时（{timeout}s）", "sandbox": True, "remote": True}
|
||
except Exception as e:
|
||
return {"rc": -1, "stdout": "", "stderr": f"SSH 连接失败: {str(e)[:300]}", "sandbox": True, "remote": True}
|
||
|
||
return {
|
||
"rc": proc.returncode or 0,
|
||
"stdout": stdout.decode("utf-8", "replace")[-8000:],
|
||
"stderr": stderr.decode("utf-8", "replace")[-4000:],
|
||
"sandbox": True,
|
||
"remote": True,
|
||
}
|
||
|
||
|
||
async def run_in_work_env(sor, account_name: str, user_id: str, org_id: str,
|
||
command: str, workdir: str = "", timeout: int = 120,
|
||
network: str = "shared") -> dict:
|
||
"""按工作环境 mode 分发执行：本地 bwrap 或远程 SSH+bwrap。"""
|
||
env = await get_work_env(sor, user_id, org_id)
|
||
if env.get("mode") == "remote":
|
||
remote_dir = env.get("remote_dir", "")
|
||
if not remote_dir:
|
||
return {"rc": -1, "stdout": "", "stderr": "远程模式缺少 remote_dir",
|
||
"sandbox": True, "remote": True}
|
||
return await run_remote_sandbox(env, remote_dir, command, workdir, timeout)
|
||
from .deploy_account import run_in_sandbox
|
||
return await run_in_sandbox(sor, account_name, command, workdir, timeout, network)
|
||
|
||
|
||
# ═══════════════════════════════════════════════════════════
|
||
# 远程 bwrap 部署（远程主机装 bwrap，零 root）
|
||
# ═══════════════════════════════════════════════════════════
|
||
|
||
async def ensure_remote_bwrap(env: dict) -> dict:
|
||
"""确保远程主机已安装 bwrap（零 root：apt download + dpkg -x）。"""
|
||
# 校验（host/user/port/key，无需 remote_dir）
|
||
host = _clean_field(env.get("remote_host"))
|
||
_host = host[1:-1] if host.startswith("[") and host.endswith("]") else host
|
||
if not host or not _HOST_RE.match(_host):
|
||
return {"ok": False, "error": "remote_host 格式非法"}
|
||
user = _clean_field(env.get("remote_user"))
|
||
if not user or not _USER_RE.match(user):
|
||
return {"ok": False, "error": "remote_user 格式非法"}
|
||
key = (env.get("remote_key_path") or "").strip()
|
||
if key and key.startswith("/"):
|
||
ssh_dir = os.path.expanduser("~/.ssh")
|
||
if not key.startswith(ssh_dir.rstrip("/") + "/"):
|
||
return {"ok": False, "error": "remote_key_path 必须位于 ~/.ssh/ 目录下"}
|
||
|
||
ssh_args = _ssh_common_args(env)
|
||
target = _ssh_target(env)
|
||
|
||
script = (
|
||
'mkdir -p ~/bin && '
|
||
'if ! command -v bwrap >/dev/null 2>&1 && [ ! -x ~/bin/bwrap ]; then '
|
||
'tmpd=$(mktemp -d) && (cd "$tmpd" && apt download bubblewrap >/dev/null 2>&1 '
|
||
'&& dpkg -x bubblewrap*.deb . && cp usr/bin/bwrap ~/bin/bwrap) 2>/dev/null; '
|
||
'rm -rf "$tmpd"; fi; '
|
||
'if command -v bwrap >/dev/null 2>&1; then echo PATH_BWRAP; '
|
||
'elif [ -x ~/bin/bwrap ]; then echo HOME_BWRAP; '
|
||
'else echo NO_BWRAP; fi'
|
||
)
|
||
ssh_cmd = ["ssh"] + ssh_args + [target, script]
|
||
try:
|
||
proc = await asyncio.create_subprocess_exec(
|
||
*ssh_cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE)
|
||
stdout, stderr = await asyncio.wait_for(proc.communicate(), timeout=60)
|
||
out = stdout.decode("utf-8", "replace").strip()
|
||
if "NO_BWRAP" in out:
|
||
return {"ok": False, "error": "远程主机无法获取 bwrap: " + stderr.decode("utf-8", "replace")[-300:]}
|
||
return {"ok": True, "location": out.strip().splitlines()[-1] if out else "unknown"}
|
||
except Exception as e:
|
||
return {"ok": False, "error": str(e)[:300]}
|