135 lines
4.9 KiB
Python
135 lines
4.9 KiB
Python
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"""Authentication service."""
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from loguru import logger
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from typing import Optional
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from datetime import datetime, timedelta, timezone
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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 sqlalchemy import select
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import bcrypt
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import jwt
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from ..core.config import settings
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from ..db.database import get_session
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from ..models.user import User
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security = HTTPBearer()
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async def get_current_user(
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credentials: HTTPAuthorizationCredentials = Depends(security),
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session: Session = Depends(get_session)
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) -> User:
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"""Get current authenticated user (for Depends)."""
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from ..core.context import UserContext
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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token = credentials.credentials
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payload = AuthService.verify_token(token)
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if payload is None:
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session.desc = f"ERROR: 令牌验证失败 - 令牌: {token[:50]}..."
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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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session.desc = "ERROR: 令牌中没有用户名"
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raise credentials_exception
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stmt = select(User).where(User.username == username)
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user = (await session.execute(stmt)).scalar_one_or_none()
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if user is None:
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session.desc = f"ERROR: 数据库中未找到用户 {username}"
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raise credentials_exception
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UserContext.set_current_user(user, canLog=True)
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return user
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def get_current_active_user(current_user: User = Depends(get_current_user)) -> User:
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"""Get current active user (for Depends)."""
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if not current_user.is_active:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail="Inactive user"
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)
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return current_user
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class AuthService:
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"""Authentication service."""
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get_current_user = get_current_user
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get_current_active_user = get_current_active_user
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@staticmethod
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async def authenticate_user_by_email(session: Session, email: str, password: str) -> Optional[User]:
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"""Authenticate user with email and password."""
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session.desc = f"根据邮箱 {email} 验证用户密码"
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stmt = select(User).where(User.email == email)
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user = (await session.execute(stmt)).scalar_one_or_none()
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if not user:
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return None
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if not AuthService.verify_password(password, user.hashed_password):
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return None
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return user
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@staticmethod
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async def authenticate_user(session: Session, username: str, password: str) -> Optional[User]:
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"""Authenticate user with username and password."""
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session.desc = f"根据用户名 {username} 验证用户密码"
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stmt = select(User).where(User.username == username)
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user = (await session.execute(stmt)).scalar_one_or_none()
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if not user:
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return None
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if not AuthService.verify_password(password, user.hashed_password):
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return None
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return user
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@staticmethod
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async def create_access_token(session: Session, data: dict, expires_delta: Optional[timedelta] = None) -> str:
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"""创建 JWT 访问 token"""
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session.desc = f"创建 JWT 访问 token - 数据: {data}"
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.now(timezone.utc) + expires_delta
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else:
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expire = datetime.now(timezone.utc) + timedelta(minutes=settings.security.access_token_expire_minutes)
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to_encode.update({"exp": expire})
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encoded_jwt = jwt.encode(
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to_encode,
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settings.security.secret_key,
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algorithm=settings.security.algorithm
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)
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return encoded_jwt
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@staticmethod
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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"""Verify a password against its hash."""
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# 直接使用bcrypt库进行密码验证
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return bcrypt.checkpw(plain_password.encode('utf-8'), hashed_password.encode('utf-8'))
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@staticmethod
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def get_password_hash(password: str) -> str:
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"""Generate password hash."""
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# 直接使用bcrypt库进行哈希
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salt = bcrypt.gensalt()
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hashed_bytes = bcrypt.hashpw(password.encode('utf-8'), salt)
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hashed_password = hashed_bytes.decode('utf-8')
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return hashed_password
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@staticmethod
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def verify_token(token: str) -> Optional[dict]:
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"""Verify JWT token."""
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try:
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payload = jwt.decode(
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token,
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settings.security.secret_key,
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algorithms=[settings.security.algorithm]
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)
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return payload
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except jwt.PyJWTError as e:
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logger.error(f"Token verification failed: {e}")
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logger.error(f"Token: {token[:50]}...")
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return None
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