Python3 扩展包 TelnetLib 使用

发布时间：2021-05-21 04:53:07 所属栏目：大数据来源： https://blog.csdn.net/yilovex

导读：@H_404_0@ #!/usr/bin/env python3# -*- coding: UTF-8 -*-import timeimport telnetlibclass TelnetLib(object): def __init__(self): self.tn = None self._output = True self._system = False self.sleep = None self.timeout = None self.data = [] self

@H_404_0@

#!/usr/bin/env python3
# -*- coding: UTF-8 -*-

import time
import telnetlib


class TelnetLib(object):

    def __init__(self):

        self.tn = None
        self._output = True
        self._system = False
        self.sleep = None
        self.timeout = None
        self.data = []

        self.EXIT = b'quitn'
        self.USERNAME = b'Username:' or b'Login:' or b'username' or b'login'
        self.PASSWORD = b'Password:' or b'password'

    @staticmethod
    def format(data):
        return data.encode('UTF-8') + b'n'

    def link(self,host,port=23,sleep=1,timeout=3):
        try:
            self.sleep = sleep
            self.timeout = timeout
            self.tn = telnetlib.Telnet(host,port,self.timeout)
        except Exception as e:
            raise ValueError('设备连接错误:%s' % e)

    def login(self,username,password):
        try:
            self.data.append(self.tn.read_until(self.USERNAME,self.timeout))
            self.tn.write(self.format(username))
            time.sleep(self.sleep)
            self.data.append(self.tn.read_until(self.PASSWORD,self.timeout))
            self.tn.write(self.format(password))
            time.sleep(self.sleep)
            if self._output is True:
                self.tn.write(self.format('screen-length disable'))
        except Exception as e:
            raise ValueError('设备登录错误:%s' % e)

    def system(self):
        self._system = True
        self.tn.write(self.format('system-view'))
        time.sleep(self.sleep)

    def shell(self,command):
        try:
            self.tn.write(self.format(command))
            time.sleep(self.sleep)
            self.data.append(self.tn.read_very_eager())
        except Exception as e:
            raise ValueError('命令执行错误:%s' % e)

    def log(self):
        return ''.join([data.decode('UTF-8') for data in self.data if data])

    def exit(self):
        try:
            if self._system is True:
                self.tn.write(self.EXIT)
            self.tn.write(self.EXIT)
            time.sleep(self.sleep)
            self.data.append(self.tn.read_very_eager())
            self.tn.close()
        except Exception as e:
            raise ValueError('设备退出错误:%s' % e)

（编辑：北几岛）

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