防止在静默令牌获取中执行业务流程步骤

import logging
from datetime import datetime, timedelta
import jwt

# 配置日志
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

# 生成静默令牌
def generate_silent_token(user_id, secret_key, expires_in=3600):
    payload = {
        'user_id': user_id,
        'exp': datetime.utcnow() + timedelta(seconds=expires_in)
    }
    token = jwt.encode(payload, secret_key, algorithm='HS256')
    return token

# 验证静默令牌
def verify_silent_token(token, secret_key):
    try:
        payload = jwt.decode(token, secret_key, algorithms=['HS256'])
        return payload
    except jwt.ExpiredSignatureError:
        logger.error("Token has expired")
        return None
    except jwt.InvalidTokenError:
        logger.error("Invalid token")
        return None

# 示例业务流程步骤
def business_process_step(user_id):
    # 这里可以添加具体的业务流程逻辑
    logger.info(f"Executing business process step for user {user_id}")

# 主逻辑
def main():
    secret_key = 'your_secret_key'
    user_id = 'user123'
    
    # 生成静默令牌
    token = generate_silent_token(user_id, secret_key)
    logger.info(f"Generated silent token: {token}")
    
    # 验证静默令牌
    payload = verify_silent_token(token, secret_key)
    if payload:
        # 检查权限
        if 'user_id' in payload and payload['user_id'] == user_id:
            business_process_step(user_id)
        else:
            logger.error("Permission denied")
    else:
        logger.error("Token verification failed")

if __name__ == "__main__":
    main()