47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
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from datetime import datetime, timedelta
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import bcrypt
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import jwt
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from fastapi import Depends, HTTPException
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from fastapi.security import OAuth2PasswordBearer
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# 密钥，用于签名JWT
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SECRET_KEY = "_CM__CMCMCM__CM_"
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ALGORITHM = "HS256"
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user_db = {
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"admin": {
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"user_id": "1",
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"username": "admin",
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"password": bcrypt.hashpw("admin123".encode("utf-8"), bcrypt.gensalt())
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}
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}
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="login")
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def verify_password(plain_password, hashed_password):
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return bcrypt.checkpw(plain_password.encode('utf-8'), hashed_password)
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def create_access_token(data: dict, expires_delta: timedelta = None):
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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=120)
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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(token: str = Depends(oauth2_scheme)):
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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if payload["exp"] < int(datetime.utcnow().timestamp()):
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raise HTTPException(status_code=401, detail="Token已过期")
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username = payload["sub"]
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except jwt.ExpiredSignatureError:
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raise HTTPException(status_code=401, detail="Token已过期")
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except jwt.InvalidSignatureError:
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raise HTTPException(status_code=401, detail="Token无效")
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return username
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