John
57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
import os
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from datetime import datetime, timedelta, timezone
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from typing import Optional
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import bcrypt
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from fastapi import Depends, HTTPException, status
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from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
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from jose import JWTError, jwt
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from sqlalchemy.orm import Session
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from database import get_db
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from models import User
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SECRET_KEY = os.getenv("WORDLOOP_SECRET_KEY", "wordloop-dev-secret-change-in-production")
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 60 * 24 * 7
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security = HTTPBearer()
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def hash_password(password: str) -> str:
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return bcrypt.hashpw(password.encode("utf-8"), bcrypt.gensalt()).decode("utf-8")
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def verify_password(plain: str, hashed: str) -> bool:
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return bcrypt.checkpw(plain.encode("utf-8"), hashed.encode("utf-8"))
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def create_access_token(user_id: int, username: str) -> str:
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expire = datetime.now(timezone.utc) + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
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payload = {"sub": str(user_id), "username": username, "exp": expire}
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return jwt.encode(payload, SECRET_KEY, algorithm=ALGORITHM)
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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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token = credentials.credentials
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credentials_exception = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="无效或过期的登录凭证",
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headers={"WWW-Authenticate": "Bearer"},
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)
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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user_id: Optional[str] = payload.get("sub")
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if user_id is None:
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raise credentials_exception
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except JWTError:
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raise credentials_exception
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user = db.query(User).filter(User.id == int(user_id)).first()
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if user is None:
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raise credentials_exception
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return user
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