128 lines
4.1 KiB
Python
128 lines
4.1 KiB
Python
"""
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AIFlow 认证与授权模块
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JWT Token 生成与验证, 密码哈希
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使用 bcrypt 库直接处理密码哈希，避免 passlib 与新版 bcrypt 的兼容性问题
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"""
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import logging
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from datetime import datetime, timedelta
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from typing import Optional
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import bcrypt
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from jose import JWTError, jwt
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from fastapi import Depends, HTTPException, status, Request
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from .config import SECRET_KEY, ALGORITHM, ACCESS_TOKEN_EXPIRE_MINUTES
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# Phase0: 5-level RBAC
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ROLE_HIERARCHY = {
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"super_admin": 100,
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"admin": 80,
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"developer": 50,
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"user": 30,
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"guest": 10,
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}
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def has_role(user_role: str, required: str) -> bool:
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return ROLE_HIERARCHY.get(user_role, 0) >= ROLE_HIERARCHY.get(required, 0)
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logger = logging.getLogger(__name__)
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security = HTTPBearer()
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security_optional = HTTPBearer(auto_error=False)
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async def get_current_tenant(
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credentials: HTTPAuthorizationCredentials = Depends(security),
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):
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try:
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payload = jwt.decode(credentials.credentials, SECRET_KEY, algorithms=[ALGORITHM])
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return payload.get("tenant_id")
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except JWTError:
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return None
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def hash_password(password: str) -> str:
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"""使用 bcrypt 直接生成密码哈希"""
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return bcrypt.hashpw(password.encode("utf-8"), bcrypt.gensalt()).decode("utf-8")
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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"""使用 bcrypt 直接验证密码，捕获所有异常确保稳定性"""
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try:
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return bcrypt.checkpw(
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plain_password.encode("utf-8"),
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hashed_password.encode("utf-8"),
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)
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except Exception as e:
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logger.warning(f"密码验证异常: hashed_password 前缀={hashed_password[:7]}... 长度={len(hashed_password)} 错误={e}")
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return False
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def create_access_token(data: dict, expires_delta: Optional[timedelta] = None, tenant_id: str = None) -> str:
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to_encode = data.copy()
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if tenant_id:
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to_encode["tenant_id"] = tenant_id
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expire = datetime.utcnow() + (expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES))
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to_encode.update({"exp": expire})
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return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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def decode_access_token(token: str) -> Optional[dict]:
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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return payload
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except JWTError:
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return None
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async def get_current_user_id(
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credentials: HTTPAuthorizationCredentials = Depends(security)
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) -> str:
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"""从JWT Token中提取当前用户ID"""
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payload = decode_access_token(credentials.credentials)
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if payload is None:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="无效的认证令牌")
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user_id = payload.get("sub")
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if user_id is None:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="无效的认证令牌")
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return user_id
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async def get_current_user_id_optional(
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credentials: Optional[HTTPAuthorizationCredentials] = Depends(security_optional),
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) -> Optional[str]:
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"""从JWT Token中提取当前用户ID，不强制要求登录"""
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if credentials is None:
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return None
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payload = decode_access_token(credentials.credentials)
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if payload is None:
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return None
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return payload.get("sub")
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async def get_current_user(
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user_id: str = Depends(get_current_user_id),
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):
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"""获取当前用户对象（延迟导入避免循环引用）"""
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from .database import SessionLocal
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from .models import User
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db = SessionLocal()
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try:
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user = db.query(User).filter(User.id == user_id).first()
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if not user:
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raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="用户不存在")
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if user.status == "banned":
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="账号已被封禁")
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return user
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finally:
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db.close()
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async def get_current_admin(
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user=Depends(get_current_user),
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):
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"""验证当前用户为管理员"""
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if not has_role(user.role, "admin"):
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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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