88 lines
2.6 KiB
Python
88 lines
2.6 KiB
Python
# 认证模块
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import os
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import bcrypt
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from datetime import datetime, timedelta
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from typing import Optional
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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 jose import JWTError, jwt
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from sqlalchemy.orm import Session
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from app.core.database import SessionLocal
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from app.models.models import User
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# 配置
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SECRET_KEY = os.getenv("SECRET_KEY", "your-secret-key-change-in-production")
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = int(os.getenv("ACCESS_TOKEN_EXPIRE_MINUTES", "10080")) # 7天
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# HTTP Bearer 认证
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security = HTTPBearer(auto_error=False)
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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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try:
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return bcrypt.checkpw(plain_password.encode('utf-8'), hashed_password.encode('utf-8'))
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except Exception:
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return False
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def get_password_hash(password: str) -> str:
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"""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 create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
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"""创建访问令牌"""
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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(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
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to_encode.update({"exp": expire})
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encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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return encoded_jwt
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def decode_access_token(token: str) -> Optional[dict]:
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"""解码访问令牌"""
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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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def get_current_user(
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credentials: Optional[HTTPAuthorizationCredentials] = Depends(security),
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db: Session = Depends(lambda: SessionLocal())
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) -> Optional[User]:
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"""获取当前用户（可返回None）"""
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if not credentials:
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return None
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token = credentials.credentials
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payload = decode_access_token(token)
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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="无效的令牌",
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headers={"WWW-Authenticate": "Bearer"},
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)
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user_id: str = payload.get("sub")
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if not user_id:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="无效的令牌",
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headers={"WWW-Authenticate": "Bearer"},
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)
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user = db.query(User).filter(User.f99_90_id == user_id).first()
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if not user:
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return None
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return user
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