56 lines
2.0 KiB
Python
56 lines
2.0 KiB
Python
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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from passlib.context import CryptContext
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from fastapi import HTTPException, Security, Depends
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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import db
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SECRET_KEY = "your-secret-key-change-in-production"
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 60 * 24
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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security = HTTPBearer()
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optional_security = HTTPBearer(auto_error=False)
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def verify_password(plain_password, hashed_password):
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return pwd_context.verify(plain_password, hashed_password)
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def get_password_hash(password):
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return pwd_context.hash(password)
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def create_access_token(data: dict):
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to_encode = data.copy()
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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 get_current_user(credentials: HTTPAuthorizationCredentials = Depends(security)):
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token = credentials.credentials
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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user_id: int = payload.get("id")
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if user_id is None:
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raise HTTPException(status_code=401, detail="无效的认证信息")
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except JWTError:
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raise HTTPException(status_code=403, detail="登录已过期，请重新登录")
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user = db.get_user_by_id(user_id)
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if user is None:
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raise HTTPException(status_code=404, detail="用户不存在")
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return user
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def get_optional_user(credentials: Optional[HTTPAuthorizationCredentials] = Depends(optional_security)):
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if not credentials:
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return None
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try:
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payload = jwt.decode(credentials.credentials, SECRET_KEY, algorithms=[ALGORITHM])
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user_id = payload.get("id")
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if user_id:
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return db.get_user_by_id(user_id)
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except JWTError:
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return None
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return None
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