python pexpect ssh 远程登录服务器的方法_Python

python pexpect ssh 远程登录服务器的方法

2021-05-28 00:16西杭 Python

今天小编就为大家分享一篇python pexpect ssh 远程登录服务器的方法，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧

使用了python中的pexpect模块，在测试代码之前，可输入python进入交互界面，输入help('pexpect')，查询是否本地含有pexpect模块。

如果没有，linux系统输入 easy_install pexpect便可自动安装。

测试代码，连接127.0.0.1

下面是我手动连接127.0.0.1，发现只有在首次使用ssh连接127.0.0.1时，需要输入yes or no ，而后再次使用ssh ,则不需要再次输入yes

直接输入密码即可。

python pexpect ssh 远程登录服务器的方法

后续测试代码是二次链接，无需查询是否需要输入yes or no

				?

									import pexpect 

									def send_command(child, cmd):

									  child.sendline(cmd)

									  child.expect(promt)

									  print child.before

									def connect(user, host, password):

									  ssh_newkey = 'ary you sure you want to continue connecting'

									  connstr = 'ssh ' + user + '@' + host

									  child = pexpect.spawn(connstr)

									  '''

									  ret = child.expect([pexpect.timeout, ssh_newkey])

									  if ret == 0:

									    print "[-] error 1"

									    return

									  elif ret == 1:

									    child.sendline('yes')

									  '''

									  res = child.expect([pexpect.timeout, '[p|p]assword:'])

									  if res == 0:

									    print "[-] error 2"

									    return

									  elif res == 1:

									    child.sendline(password)

									  child.expect(promt)

									  return child

									def main():

									  host = '127.0.0.1'#测试主机ip或者主机名

									  user = 'root'#测试账号

									  password = 'root'#测试密码

									  child = connect(user, host, password)

									  send_command(child, 'w')

									if __name__ == '__main__':

									  main()

可以用pxssh模块更简单来完成ssh的连接

				?

									from pexpect import pxssh

									def send_command(s, cmd):

									  s.sendline(cmd)

									  s.prompt()

									  print s.before

									def connect(host, user, password):

									  try:

									    s = pxssh.pxssh()

									    s.login(host, user, password)

									    return s

									  except:

									    print "error"

									    exit(0)

									def main():

									  s = connect('127.0.0.1', 'root', '15110506010')

									  send_command(s, 'whoami')

									if __name__ == '__main__':

									  main()

批量连接肉鸡。

				?

									from pexpect import pxssh

									botnet = []

									class client:

									    def __init__(self, user, host, password):

									        self.user=user

									        self.host=host

									        self.password=password

									        self.child=self.connect()

									    def connect(self):

									        try:

									            s = pxssh.pxssh()

									            s.login(self.host, self.user, self.password)

									            return s

									        except exception, e:

									            print "error *" + str(e)

									    def send_command(self, cmd):

									        self.child.sendline(cmd)

									        self.child.prompt()

									        return self.child.before

									def addclient(user, host, password):

									    c = client(user, host, password)

									    botnet.append(c)

									def botnetcommand(command):

									    for c in botnet:

									        output = c.send_command(command)

									        print "ip: " + str(c.host)

									        print output

									def main():

									    addclient('root', '127.0.0.1', 'toor')

									    addclient('root', '****', '*****')

									    botnetcommand('pwd')

									if __name__=='__main__':

									    main()