编码如下:
mport logging
import telnetlib
import time
class TelnetClient():
def __init__(self, ):
self.tn = telnetlib.Telnet()
# 此函数实现telnet登录主机
def login_host(self, host_ip, username, password):
try:
self.tn.open(host_ip, port=23)
except:
logging.warning('%s网络连接失败' % host_ip)
return False
# 等待login出现后输入用户名,最多等待10秒
self.tn.read_until(b'login: ', timeout=10)
self.tn.write(username.encode('ascii') + b'\n')
# 等待Password出现后输入用户名,最多等待10秒
self.tn.read_until(b'Password: ', timeout=10)
self.tn.write(password.encode('ascii') + b'\n')
# 延时两秒再收取返回结果,给服务端足够响应时间
time.sleep(2)
# 获取登录结果
# read_very_eager()获取到的是的是上次获取之后本次获取之前的所有输出
command_result = self.tn.read_very_eager().decode('ascii')
if 'Login incorrect' not in command_result:
logging.warning('%s登录成功' % host_ip)
return True
else:
logging.warning('%s登录失败,用户名或密码错误' % host_ip)
return False
# 此函数实现执行传过来的命令,并输出其执行结果
def execute_some_command(self, command):
# 执行命令
self.tn.write(command.encode('ascii') + b'\n')
time.sleep(2)
# 获取命令结果
command_result = self.tn.read_very_eager().decode('ascii')
logging.warning('命令执行结果:\n%s' % command_result)
# 退出telnet
def logout_host(self):
self.tn.write(b"exit\n")
if __name__ == '__main__':
host_ip = '192.168.1.X'
username = 'root'
password = 'XXXX'
command1 = 'XXXX'
telnet_client = TelnetClient()
# 如果登录结果返加True,则执行命令,然后退出
if telnet_client.login_host(host_ip, username, password):
telnet_client.execute_some_command(command1)
telnet_client.logout_host()