python pexpect ssh 远程登录服务器的方法

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。

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.beforedef 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 childdef 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 pxsshdef send_command(s, cmd):  s.sendline(cmd)  s.prompt()  print s.beforedef 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 pxsshbotnet = []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.beforedef 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 outputdef main():	addclient('root', '127.0.0.1', 'toor')	addclient('root', '****', '*****')	botnetcommand('pwd')if __name__=='__main__':	main()

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