105 lines
3.6 KiB
Python
105 lines
3.6 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 models.database import get_db
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from models.models import User
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from .jwt_utils import decode_access_token
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from .permissions import (
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ACCOUNTS_WRITE,
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MESSAGES_WRITE,
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RULES_WRITE,
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USERS_MANAGE,
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WRITE_PERMISSIONS,
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)
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from .roles import can_write, has_permission, is_admin
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bearer_scheme = HTTPBearer(auto_error=False)
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async def get_current_user(
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credentials: HTTPAuthorizationCredentials = Depends(bearer_scheme),
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db: AsyncSession = Depends(get_db),
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) -> User:
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if not credentials or not credentials.credentials:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="未登录或令牌缺失")
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payload = decode_access_token(credentials.credentials)
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if not payload or not payload.get("sub"):
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="登录已过期，请重新登录")
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try:
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user_id = int(payload["sub"])
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except (TypeError, ValueError):
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="无效令牌")
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result = await db.execute(select(User).where(User.id == user_id))
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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(status_code=status.HTTP_401_UNAUTHORIZED, detail="用户不存在或已禁用")
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return user
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def require_permission(permission: str):
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"""FastAPI dependency factory that checks a single permission code."""
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async def _checker(user: User = Depends(get_current_user)) -> User:
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if has_permission(user.role, permission):
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return user
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail=f"缺少权限：{permission}",
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)
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return _checker
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async def require_admin(user: User = Depends(get_current_user)) -> User:
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if not is_admin(user.role):
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="需要管理员权限")
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return user
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async def require_write(user: User = Depends(get_current_user)) -> User:
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"""Any write-capable permission (accounts/messages/rules) or legacy can_write."""
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if is_admin(user.role) or can_write(user.role):
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return user
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if any(has_permission(user.role, code) for code in WRITE_PERMISSIONS):
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return user
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="当前角色只读，无法执行此操作",
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)
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async def require_accounts_write(user: User = Depends(get_current_user)) -> User:
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if has_permission(user.role, ACCOUNTS_WRITE):
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return user
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="缺少权限：accounts.write",
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)
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async def require_messages_write(user: User = Depends(get_current_user)) -> User:
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if has_permission(user.role, MESSAGES_WRITE):
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return user
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="缺少权限：messages.write",
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)
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async def require_rules_write(user: User = Depends(get_current_user)) -> User:
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if has_permission(user.role, RULES_WRITE):
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return user
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="缺少权限：rules.write",
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)
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async def require_user_manager(user: User = Depends(get_current_user)) -> User:
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if has_permission(user.role, USERS_MANAGE):
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return user
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="需要用户管理权限")
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