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93 lines
2.7 KiB
93 lines
2.7 KiB
2 months ago
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"""
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安全模块 - JWT认证和密码处理
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"""
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from datetime import datetime, timedelta
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from typing import Optional
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from jose import JWTError, jwt
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import bcrypt
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from fastapi import Depends, HTTPException, status
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from sqlalchemy.orm import Session
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from app.config import settings
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from app.db.session import get_db
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from app.models.user import User
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security = HTTPBearer()
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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"""验证密码"""
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return bcrypt.checkpw(plain_password.encode('utf-8'), hashed_password.encode('utf-8'))
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def get_password_hash(password: str) -> str:
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"""获取密码哈希"""
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return bcrypt.hashpw(password.encode('utf-8'), bcrypt.gensalt()).decode('utf-8')
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def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
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"""创建JWT访问令牌"""
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(hours=settings.ACCESS_TOKEN_EXPIRE_HOURS)
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to_encode.update({"exp": expire})
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encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
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return encoded_jwt
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def decode_token(token: str) -> Optional[dict]:
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"""解码JWT令牌"""
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try:
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payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[settings.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(
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credentials: HTTPAuthorizationCredentials = Depends(security),
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db: Session = Depends(get_db)
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) -> User:
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"""获取当前用户"""
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="无效的认证凭据",
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headers={"WWW-Authenticate": "Bearer"},
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)
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token = credentials.credentials
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payload = decode_token(token)
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if payload is None:
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raise credentials_exception
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username: str = payload.get("sub")
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if username is None:
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raise credentials_exception
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user = db.query(User).filter(User.username == username).first()
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if user is None:
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raise credentials_exception
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if not user.is_active:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="用户已被禁用"
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)
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return user
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async def get_current_active_superuser(current_user: User = Depends(get_current_user)) -> User:
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"""获取当前超级用户"""
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if not current_user.is_superuser:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="需要超级用户权限"
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)
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return current_user
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