157 lines
4.9 KiB
Python
157 lines
4.9 KiB
Python
from fastapi import Depends, HTTPException, status
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from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.models.base import async_session
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from app.models.user import User
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from app.services.auth import decode_access_token, user_must_set_password
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from app.services.credit.query_service import attach_credit_snapshot, get_available_credits
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from app.services.system_config_cache import get_system_config_value
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security = HTTPBearer(auto_error=False)
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async def get_db():
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async with async_session() as session:
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try:
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yield session
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await session.commit()
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except Exception:
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await session.rollback()
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raise
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finally:
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await session.close()
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async def get_current_user_allow_password_pending(
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credentials: HTTPAuthorizationCredentials | None = Depends(security),
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db: AsyncSession = Depends(get_db),
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) -> User:
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if not credentials:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="未登录",
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)
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payload = decode_access_token(credentials.credentials)
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if not payload:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="登录已过期",
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)
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user_id = payload.get("sub")
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token_version = payload.get("ver", 0)
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device_type = payload.get("dev", "pc")
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# Skip captcha tokens
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if user_id and user_id.startswith("captcha:"):
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="无效的凭证",
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)
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result = await db.execute(select(User).where(User.id == user_id).limit(1))
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user = result.scalar_one_or_none()
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if not user or not user.is_active:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="账号不存在或已禁用",
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)
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# 单设备登录校验 — 根据全局开关 + 用户级覆盖决定是否启用
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override = getattr(user, "single_device_login_override", None)
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if override is True:
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enabled = True
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elif override is False:
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enabled = False
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else:
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# 跟随全局设置
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config_val = await get_system_config_value(db, "single_device_login_enabled")
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enabled = config_val is not None and config_val.lower() in ("true", "1", "yes")
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if enabled:
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# 按设备类型比对对应版本号
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if device_type == "mobile":
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current_version = user.mobile_token_version
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else:
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current_version = user.pc_token_version
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if token_version != current_version:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="账号已在其他设备登录，请重新登录",
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)
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attach_credit_snapshot(user, await get_available_credits(db, user.id))
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return user
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async def get_current_user(
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current_user: User = Depends(get_current_user_allow_password_pending),
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) -> User:
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if user_must_set_password(current_user):
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail={
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"code": "PASSWORD_REQUIRED",
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"message": "请先设置登录密码",
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},
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)
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return current_user
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async def get_optional_current_user(
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credentials: HTTPAuthorizationCredentials | None = Depends(security),
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db: AsyncSession = Depends(get_db),
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) -> User | None:
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if not credentials:
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return None
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user_id = decode_access_token(credentials.credentials)
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if not user_id:
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return None
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if user_id.startswith("captcha:"):
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return None
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result = await db.execute(select(User).where(User.id == user_id).limit(1))
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user = result.scalar_one_or_none()
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if not user or not user.is_active:
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return None
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if user_must_set_password(user):
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return None
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attach_credit_snapshot(user, await get_available_credits(db, user.id))
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return user
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async def get_admin_user(
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current_user: User = Depends(get_current_user_allow_password_pending),
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) -> User:
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"""验证后台用户权限。
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- user_type="admin" 的后台用户即可通过（含非管理员子账号）
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- 前端通过 allowed_menus 控制非管理员子账号的菜单可见性
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- 非后台用户: 403 拒绝
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"""
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if current_user.user_type != "admin":
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="需要后台用户权限",
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)
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return current_user
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async def get_backend_user(
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current_user: User = Depends(get_current_user_allow_password_pending),
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) -> User:
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"""与 get_admin_user 等价: 验证 user_type="admin" 的后台用户。"""
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if current_user.user_type != "admin":
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="需要后台用户权限",
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)
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return current_user
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