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ThearchyHelios
384 lines
20 KiB
Python
384 lines
20 KiB
Python
"""访问密钥与服务账号（docs/design/next-round/04-对外集成与触达.md A1–A7）：建、撤销、轮换密钥，建、停用服务账号，个人
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访问密钥的开关，每把密钥最近的请求，接口说明。签发、认人、门禁的规则在 app/auth/keys.py。
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main.py 挂登录即可（require_role("user")），接口里再按本人 / 管理员判：
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- 管理员看得到服务账号和全部密钥，能给服务账号建密钥、撤销和轮换任何一把；
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- 每个人看得到自己的个人访问密钥；管理员打开开关（auth.personal_keys，缺省关）之后才能建；
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- 关登录时访问密钥不生效：列表照给（空的，带 login_on=false），建密钥、建服务账号回 409（keys_need_login）。
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建、撤销、轮换密钥，建、停用服务账号，开关个人密钥都写审计（同一个事务）。密钥明文只在建、轮换的回包里出现一次。
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"""
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from __future__ import annotations
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import re
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from datetime import timedelta
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from typing import Any
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from fastapi import APIRouter, Depends
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from pydantic import BaseModel, Field
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from sqlalchemy import select
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from sqlalchemy.exc import IntegrityError
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.api.coded import CodedHTTPException
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from app.api.deps import current_principal
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from app.auth import keys
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from app.auth.audit import record
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from app.db.base import get_session, utcnow
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from app.db.models_identity import AccessKey, User
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router = APIRouter(prefix="/api/access-keys", tags=["access-keys"])
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#: 错误码（403 / 404 / 409 / 422）
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KEY_NOT_FOUND = "access_key_not_found"
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KEY_FORBIDDEN = "access_key_forbidden"
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KEY_INVALID_INPUT = "access_key_invalid"
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KEY_NOT_ACTIVE = "access_key_not_active"
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PERSONAL_KEYS_OFF = "personal_keys_off"
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SERVICE_NOT_FOUND = "service_account_not_found"
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SERVICE_INVALID = "service_account_invalid"
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SERVICE_TAKEN = "service_account_taken"
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_SERVICE_NAME = re.compile(r"^svc-[A-Za-z0-9._-]{1,96}$")
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def _iso(value: Any) -> str | None:
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return value.isoformat() if value else None
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def _need_login() -> None:
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if current_principal().mode == "off":
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raise CodedHTTPException(409, keys.KEYS_NEED_LOGIN_TEXT, keys.KEYS_NEED_LOGIN)
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def _is_admin() -> bool:
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principal = current_principal()
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return principal.mode != "off" and principal.at_least("admin") and principal.via != "key"
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def _require_admin() -> None:
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from app.api.deps import ensure_role
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ensure_role("admin")
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def key_out(row: AccessKey, owner: User | None) -> dict[str, Any]:
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"""接口里的一把密钥：没有明文、没有哈希，只有开头一截（prefix）给人认。"""
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return {"id": row.id, "name": row.name, "prefix": row.prefix, "scopes": [s for s in row.scopes or []],
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"app_ids": list(row.app_ids) if row.app_ids else None,
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"owner": {"id": row.owner_user_id, "username": owner.username if owner else None,
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"display_name": (owner.display_name or owner.username) if owner else None,
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"kind": owner.kind if owner else None},
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"personal": owner is None or owner.kind != keys.SERVICE_KIND,
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"state": keys.state_of(row, owner),
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"expires_at": _iso(row.expires_at), "revoked_at": _iso(row.revoked_at), "revoked_by": row.revoked_by,
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"last_used_at": _iso(row.last_used_at), "last_used_ip": row.last_used_ip,
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"rotated_from": row.rotated_from, "created_by": row.created_by, "created_at": _iso(row.created_at)}
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def service_out(row: User, key_count: int = 0) -> dict[str, Any]:
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return {"id": row.id, "username": row.username, "display_name": row.display_name or row.username,
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"disabled": row.disabled, "created_by": row.created_by, "created_at": _iso(row.created_at),
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"keys": key_count}
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async def _owners(session: AsyncSession, rows: list[AccessKey]) -> dict[str, User]:
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ids = {r.owner_user_id for r in rows}
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if not ids:
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return {}
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return {u.id: u for u in (await session.execute(select(User).where(User.id.in_(ids)))).scalars()}
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# ---------------------------------------------------------------- 开关与概况
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@router.get("/settings")
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async def get_settings() -> dict[str, Any]:
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"""这一页要的几样：开没开登录（关登录时密钥不生效）、个人访问密钥的开关、我能不能建个人密钥、是不是管理员。"""
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from app.auth import personal_keys_enabled
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principal = current_principal()
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login_on = principal.mode != "off"
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return {"login_on": login_on, "personal_keys": personal_keys_enabled(), "admin": _is_admin(),
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"can_create_personal": login_on and personal_keys_enabled() and bool(principal.user_id)
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and principal.via != "key",
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"scopes": [*keys.SCOPES], "read_scopes": [*keys.READ_SCOPES], "personal_scopes": [*keys.PERSONAL_SCOPES],
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"expires_default_days": keys.EXPIRES_DEFAULT_DAYS, "expires_max_days": keys.EXPIRES_MAX_DAYS}
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class SettingsIn(BaseModel):
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personal_keys: bool
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@router.put("/settings")
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async def put_settings(payload: SettingsIn, session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
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"""个人访问密钥的开关（只给管理员）。存在登录设置那一行里（auth.personal_keys），和「使用者可以问数据」同一处缓存。
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关掉之后建不了个人密钥，已有的个人密钥也不认（401 key_personal_off），重新打开就又能用。"""
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from app.auth import PERSONAL_KEYS, SETTING_KEY, load_settings, remember_settings
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from app.db.models import Setting
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_need_login()
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_require_admin()
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before = await load_settings(force=True)
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value = {**before, PERSONAL_KEYS: payload.personal_keys}
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row = await session.get(Setting, SETTING_KEY)
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if row is None:
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session.add(Setting(key=SETTING_KEY, value=value))
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else:
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row.value = value
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if bool(before.get(PERSONAL_KEYS)) != payload.personal_keys:
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await record(session, "auth.personal_keys", "auth", None,
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data={"before": bool(before.get(PERSONAL_KEYS)), "after": payload.personal_keys})
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await session.commit()
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remember_settings(value)
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from app.cluster import caches
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await caches.broadcast("auth_settings")
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return await get_settings()
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@router.get("/reference")
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async def reference() -> dict[str, Any]:
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"""接口说明（A7）：从门禁那张表（auth/keys.KEY_ROUTES）生成，方法、路径、scope、说明、可能的错误码。要登录（main.py 挂的
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require_role("user")），不对匿名的人敞开。"""
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return keys.reference()
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# ---------------------------------------------------------------- 服务账号（只给管理员）
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@router.get("/service-accounts")
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async def list_service_accounts(session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
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_require_admin()
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rows = list((await session.execute(select(User).where(User.kind == keys.SERVICE_KIND)
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.order_by(User.created_at, User.id))).scalars())
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counts: dict[str, int] = {}
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for owner_id in (await session.execute(select(AccessKey.owner_user_id).where(
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AccessKey.owner_user_id.in_([r.id for r in rows] or [""]), AccessKey.revoked_at.is_(None)))).scalars():
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counts[owner_id] = counts.get(owner_id, 0) + 1
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return {"items": [service_out(r, counts.get(r.id, 0)) for r in rows]}
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class ServiceIn(BaseModel):
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username: str = Field(min_length=5, max_length=100)
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display_name: str | None = Field(default=None, max_length=100)
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@router.post("/service-accounts", status_code=201)
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async def create_service_account(payload: ServiceIn, session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
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"""建一个服务账号：用户名统一 svc- 开头，没有口令、不能登录，角色固定使用者。它就是一个用户——授权、组、名录全部沿用
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现有的机制（应用授权里能选它；岗位绑定、选人候选里排除它：服务账号不能被派待办）。"""
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_need_login()
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_require_admin()
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username = payload.username.strip()
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if not _SERVICE_NAME.match(username):
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raise CodedHTTPException(422, "服务账号的用户名要以 svc- 开头，后面只用字母、数字、点、下划线和短横线",
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SERVICE_INVALID, field="username")
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if (await session.execute(select(User.id).where(User.username == username))).first():
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raise CodedHTTPException(409, f"用户名「{username}」已存在", SERVICE_TAKEN, field="username")
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row = User(username=username, display_name=(payload.display_name or "").strip() or username, role="user",
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kind=keys.SERVICE_KIND, password_hash=None, created_by=current_principal().username)
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session.add(row)
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try:
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await session.flush()
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except IntegrityError as e:
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await session.rollback()
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raise CodedHTTPException(409, f"用户名「{username}」已存在", SERVICE_TAKEN, field="username") from e
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await record(session, "service_account.create", "user", row.id, data={"username": row.username})
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await session.commit()
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return service_out(row)
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class ServicePatch(BaseModel):
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display_name: str | None = Field(default=None, max_length=100)
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disabled: bool | None = None
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async def _service(session: AsyncSession, user_id: str) -> User:
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row = await session.get(User, user_id)
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if row is None or row.kind != keys.SERVICE_KIND:
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raise CodedHTTPException(404, "服务账号不存在", SERVICE_NOT_FOUND)
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return row
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@router.patch("/service-accounts/{user_id}")
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async def update_service_account(user_id: str, payload: ServicePatch,
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session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
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"""改显示名、停用 / 启用。停用之后它的密钥全部失效（401 key_owner_disabled），重新启用就又能用（没到期、没撤销的）。"""
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_need_login()
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_require_admin()
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row = await _service(session, user_id)
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changes: dict[str, Any] = {}
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if payload.display_name is not None and payload.display_name.strip() != row.display_name:
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changes["display_name"] = [row.display_name, payload.display_name.strip() or row.username]
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row.display_name = payload.display_name.strip() or row.username
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if payload.disabled is not None and payload.disabled != row.disabled:
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changes["disabled"] = [row.disabled, payload.disabled]
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row.disabled = payload.disabled
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if changes:
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action = ("service_account.disable" if payload.disabled else "service_account.enable") \
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if "disabled" in changes else "service_account.update"
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await record(session, action, "user", row.id, data={"username": row.username, **changes})
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await session.commit()
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return service_out(row)
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# ---------------------------------------------------------------- 密钥
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@router.get("")
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async def list_keys(session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
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"""管理员：全部密钥（服务账号的和每个人的个人密钥）；别人：自己的个人密钥。关登录时是空的。"""
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principal = current_principal()
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if principal.mode == "off" or not principal.user_id:
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return {"items": []}
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query = select(AccessKey).order_by(AccessKey.created_at.desc(), AccessKey.id.desc())
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if not _is_admin():
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query = query.where(AccessKey.owner_user_id == principal.user_id)
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rows = list((await session.execute(query)).scalars())
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owners = await _owners(session, rows)
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return {"items": [key_out(r, owners.get(r.owner_user_id)) for r in rows]}
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class KeyIn(BaseModel):
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name: str = Field(min_length=1, max_length=keys.NAME_MAX)
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scopes: list[str] = Field(default_factory=lambda: list(keys.READ_SCOPES))
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#: 不给（或空）是不限应用
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app_ids: list[str] | None = None
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expires_in_days: int = Field(default=keys.EXPIRES_DEFAULT_DAYS, ge=1, le=keys.EXPIRES_MAX_DAYS)
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#: 给服务账号建（只给管理员）；不给是建自己的个人访问密钥
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service_account_id: str | None = None
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async def _check_input(session: AsyncSession, scopes: list[str], app_ids: list[str] | None, *,
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service: bool) -> tuple[list[str], list[str] | None]:
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"""scope 只能是认得的那几个（至少一个）；服务账号不能勾只给个人密钥的（回复待办）。限定的应用要是在的、共享的应用。"""
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from app.db.models_apps import App
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picked = list(dict.fromkeys(s for s in scopes))
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if not picked or any(s not in keys.SCOPES for s in picked):
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raise CodedHTTPException(422, f"权限只能从 {'、'.join(keys.SCOPES)} 里选，至少选一项", KEY_INVALID_INPUT,
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field="scopes")
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if service and (bad := [s for s in picked if s in keys.PERSONAL_SCOPES]):
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raise CodedHTTPException(422, f"服务账号不能被派待办，它的密钥不能有「{'、'.join(bad)}」：外部系统回调请用应用的 signal 钩子",
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KEY_INVALID_INPUT, field="scopes")
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apps = list(dict.fromkeys(str(a).strip() for a in app_ids or [] if str(a).strip())) or None
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if apps is not None:
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if len(apps) > keys.APPS_MAX:
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raise CodedHTTPException(422, f"一把密钥最多限定 {keys.APPS_MAX} 个应用", KEY_INVALID_INPUT, field="app_ids")
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found = {a.id: a for a in (await session.execute(select(App).where(App.id.in_(apps)))).scalars()}
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missing = [a for a in apps if a not in found]
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personal = [found[a].name for a in apps if a in found and found[a].scope == "personal"]
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if missing:
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raise CodedHTTPException(422, f"限定的应用不存在：{'、'.join(missing)}", KEY_INVALID_INPUT, field="app_ids")
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if personal:
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raise CodedHTTPException(422, f"访问密钥不能限定到个人应用：{'、'.join(personal)}", KEY_INVALID_INPUT,
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field="app_ids")
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return picked, apps
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async def _issue(session: AsyncSession, *, owner: User, name: str, scopes: list[str], app_ids: list[str] | None,
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days: float, rotated_from: str | None = None) -> tuple[AccessKey, str]:
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secret = keys.new_secret()
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row = AccessKey(owner_user_id=owner.id, name=name, key_hash=keys.key_hash(secret), prefix=keys.prefix_of(secret),
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scopes=scopes, app_ids=app_ids, expires_at=utcnow() + timedelta(days=days),
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rotated_from=rotated_from, created_by=current_principal().username)
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session.add(row)
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await session.flush()
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return row, secret
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@router.post("", status_code=201)
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async def create_key(payload: KeyIn, session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
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"""建一把密钥。明文（agl_…）只在这一次的回包里（key）；库里只存哈希和开头一截。"""
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from app.auth import personal_keys_enabled
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_need_login()
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principal = current_principal()
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if principal.via == "key":
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raise CodedHTTPException(403, "不能用访问密钥建访问密钥", KEY_FORBIDDEN)
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if payload.service_account_id:
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_require_admin()
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owner = await _service(session, payload.service_account_id)
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if owner.disabled:
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raise CodedHTTPException(409, f"服务账号「{owner.username}」已停用，先启用再建密钥", KEY_NOT_ACTIVE)
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else:
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if not personal_keys_enabled():
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raise CodedHTTPException(409, "管理员还没有打开个人访问密钥：系统间集成请让管理员建服务账号的密钥",
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PERSONAL_KEYS_OFF)
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owner = await session.get(User, principal.user_id) if principal.user_id else None
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if owner is None:
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raise CodedHTTPException(409, "找不到你的账号，请重新登录", KEY_FORBIDDEN)
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scopes, apps = await _check_input(session, payload.scopes, payload.app_ids,
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service=owner.kind == keys.SERVICE_KIND)
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row, secret = await _issue(session, owner=owner, name=payload.name.strip() or "访问密钥", scopes=scopes,
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app_ids=apps, days=payload.expires_in_days)
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await record(session, "access_key.create", "access_key", row.id,
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data={"name": row.name, "owner": owner.username, "owner_kind": owner.kind, "prefix": row.prefix,
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"scopes": scopes, "app_ids": apps, "expires_at": _iso(row.expires_at)})
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await session.commit()
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return {**key_out(row, owner), "key": secret}
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async def _own_or_admin(session: AsyncSession, key_id: str) -> tuple[AccessKey, User | None]:
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"""这把密钥能不能由这个人管：管理员能管任何一把；别人只能管自己的。看不到的一律当不存在（404）。"""
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_need_login()
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principal = current_principal()
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if principal.via == "key":
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raise CodedHTTPException(403, "不能用访问密钥管理访问密钥", KEY_FORBIDDEN)
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row = await session.get(AccessKey, key_id)
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if row is None or (not _is_admin() and row.owner_user_id != principal.user_id):
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raise CodedHTTPException(404, "访问密钥不存在", KEY_NOT_FOUND)
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return row, await session.get(User, row.owner_user_id)
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@router.post("/{key_id}/revoke")
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async def revoke_key(key_id: str, session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
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"""撤销：立刻失效（401 key_revoked），不能恢复。撤销过的再撤销一次照样回成功（不再改时间）。"""
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row, owner = await _own_or_admin(session, key_id)
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if row.revoked_at is None:
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row.revoked_at = utcnow()
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row.revoked_by = current_principal().username
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await record(session, "access_key.revoke", "access_key", row.id,
|
||
data={"name": row.name, "owner": owner.username if owner else None, "prefix": row.prefix})
|
||
await session.commit()
|
||
return key_out(row, owner)
|
||
|
||
|
||
@router.post("/{key_id}/rotate")
|
||
async def rotate_key(key_id: str, session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
|
||
"""轮换：签一把新的（名字、权限、限定的应用、有效期长短照旧），旧的 24 小时后到期——换钥匙不用停机。新密钥的明文只在
|
||
这一次的回包里（key）。撤销了的、过期了的、已经轮换过的不能再轮换（新建一把）。"""
|
||
from app.auth import personal_keys_enabled
|
||
|
||
row, owner = await _own_or_admin(session, key_id)
|
||
state = keys.state_of(row, owner)
|
||
if state != "active":
|
||
raise CodedHTTPException(409, "这把密钥已撤销、过期或拥有者已停用，不能轮换：请新建一把", KEY_NOT_ACTIVE)
|
||
if await session.scalar(select(AccessKey.id).where(AccessKey.rotated_from == row.id).limit(1)):
|
||
raise CodedHTTPException(409, "这把密钥已经轮换过：请用轮换出来的那一把", KEY_NOT_ACTIVE)
|
||
if owner is None:
|
||
raise CodedHTTPException(404, "访问密钥不存在", KEY_NOT_FOUND)
|
||
if owner.kind != keys.SERVICE_KIND and not personal_keys_enabled():
|
||
raise CodedHTTPException(409, "管理员已关闭个人访问密钥，不能轮换", PERSONAL_KEYS_OFF)
|
||
span = keys.aware(row.expires_at) - keys.aware(row.created_at)
|
||
days = min(max(span.total_seconds() / 86400, 1.0), float(keys.EXPIRES_MAX_DAYS))
|
||
fresh, secret = await _issue(session, owner=owner, name=row.name, scopes=list(row.scopes or []),
|
||
app_ids=list(row.app_ids) if row.app_ids else None, days=days, rotated_from=row.id)
|
||
grace = utcnow() + keys.ROTATE_GRACE
|
||
if keys.aware(row.expires_at) > grace:
|
||
row.expires_at = grace
|
||
await record(session, "access_key.rotate", "access_key", row.id,
|
||
data={"name": row.name, "owner": owner.username, "prefix": row.prefix, "new_key": fresh.id,
|
||
"new_prefix": fresh.prefix, "old_expires_at": _iso(row.expires_at)})
|
||
await session.commit()
|
||
return {**key_out(fresh, owner), "key": secret, "previous": key_out(row, owner)}
|
||
|
||
|
||
@router.get("/{key_id}/requests")
|
||
async def key_requests(key_id: str, limit: int = 100, session: AsyncSession = Depends(get_session)) -> dict[str, Any]:
|
||
"""这把密钥最近的请求（新的在前，最多 100 条）：时间、方法、接口（路由模板）、状态码、涉及的运行、来源地址。"""
|
||
row, _ = await _own_or_admin(session, key_id)
|
||
return {"items": await keys.recent_requests(session, row.id, min(max(limit, 1), 100)),
|
||
"retain_days": keys.RETAIN.days}
|