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python自动SSH登录远程服务器的工具

很多时候我们喜欢在自己电脑的终端直接ssh连接Linux服务器,而不喜欢使用那些有UI界面的工具区连接我们的服务器。可是在终端使用ssh我们每次都需要...

很多时候我们喜欢在自己电脑的终端直接ssh连接Linux服务器,而不喜欢使用那些有UI界面的工具区连接我们的服务器。可是在终端使用ssh我们每次都需要输入账号和密码,这也是一个烦恼,所以我们可以简单的打造一个在Linux/Mac os运行的自动ssh登录远程服务器的小工具。

来个GIF动画示例下先:

python自动SSH登录远程服务器的工具

概述

我们先理一下我们需要些什么功能:

1. 添加/删除连接服务器需要的IP,端口,密码

2. 自动输入密码登录远程服务器

对,我们就做这么简单的功能

开始写代码

代码比较长,所以我也放在在Github和码云,地址在文章最底部:

1.我们建个模块目录osnssh(Open source noob ssh),然后在下面再建两个目录,一个用来放主程序取名叫bin吧,一个用来保存登录数据(IP, 端口,密码)叫data吧。

-osnssh
-bin
-data

1.设置程序:添加/删除IP,端口,密码. 建立py文件bin/setting.py:

#!/usr/bin/env python
#-*-coding:utf-8-*-
import re, base64, os, sys
path = os.path.dirname(os.path.abspath(sys.argv[0]))
‘‘‘

选项配置管理

__author__ = ‘allen woo‘
‘‘‘
def add_host_main():
 while 1:
  if add_host():
   break
  print("

Again:")

def add_host():
 ‘‘‘
 添加主机信息
 :return: 
 ‘‘‘
 print("================Add=====================")
 print("[Help]Input ‘#q‘ exit")
 # 输入IP
 host_ip = str_format("Host IP:", "^(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9]).(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9]).(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9]).(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])$")
 if host_ip == "#q":
  return 1
 # 输入端口
 host_port = str_format("Host port(Default 22):", "[0-9]+")
 if host_port == "#q":
  return 1
 # 输入密码
 password = str_format("Password:", ".*")
 if password == "#q":
  return 1
 # 密码加密
 password = base64.encodestring(password)
 # 输入用户名
 name = str_format("User Name:", "^[^ ]+$")
 if name == "#q":
  return 1
 elif not name:
  os.system("clear")
  print("[Warning]:User name cannot be emptyg")
  return 0

 # The alias
 # 输入别名
 alias = str_format("Local Alias:", "^[^ ]+$")
 if alias == "#q":
  return 1
 elif not alias:
  os.system("clear")
  print("[Warning]:Alias cannot be emptyg")
  return 0
 # 打开数据保存文件
 of = open("{}/data/information.d".format(path))
 hosts = of.readlines()
 # 遍历文件数据,查找是否有存在的Ip,端口,还有别名
 for l in hosts:
  l = l.strip("
")
  if not l:
   continue
  l_list = l.split(" ")
  if host_ip == l_list[1] and host_port == l_list[2]:
   os.system("clear")
   print("[Warning]{}:{} existing".format(host_ip, host_port))
   return 0
  if alias == l_list[4]:
   os.system("clear")
   print("[Warning]Alias ‘{}‘ existing".format(alias))
   return 0
 of.close()
 # save
 # 保存数据到数据文件
 of = open("{}/data/information.d".format(path), "a")
 of.write("
{} {} {} {} {}".format(name.strip("
"), host_ip.strip("
"), host_port, password.strip("
"), alias.strip("
")))
 of.close()
 print("Add the success:{} {}@{}:{}".format(alias.strip("
"), name.strip("
"), host_ip.strip("
"), host_port, password.strip("
")))
 return 1

def remove_host():
 ‘‘‘
 删除主机信息
 :return: 
 ‘‘‘
 while 1:
  # 打开数据文件
  of = open("{}/data/information.d".format(path))
  hosts = of.readlines()
  of.close
  l = len(hosts)
  if l <= 0:
   os.system("clear")
   print("[Warning]There is no host")
   return

  print("================Remove================")
  print("+{}+".format("-"*40))
  print("|  Alias UserName@IP:PORT")
  hosts_temp = []
  n = 0
  # 遍历输出所以信息(除了密码)供选择
  for i in range(0, l):
   if not hosts[i].strip():
    continue
   v_list = hosts[i].strip().split(" ")
   print("+{}+".format("-"*40))
   print("| {} | {} {}@{}:{}".format(n+1, v_list[4], v_list[0], v_list[1], v_list[2]))
   n += 1
   hosts_temp.append(hosts[i])
  hosts = hosts_temp[:]
  print("+{}+".format("-"*40))
  c = raw_input("[Remove]Choose the Number or Alias(‘#q‘ to exit):")
  is_alias = False
  is_y = False
  try:
   c = int(c)
   if c > l or c < 1:
    os.system("clear")
    print("[Warning]:There is no")
    continue
   del hosts[c-1]
   is_y = True

  except:
   is_alias = True
  if is_alias:
   if c.strip() == "#q":
    os.system("clear")
    break 
   n = 0
   for l in hosts:
    if c.strip() == l.split(" ")[4].strip():
     del hosts[n]
     is_y = True 
    n += 1
  if not is_y:
   os.system("clear")
   print("[Warning]:There is no")
   continue
  else: 
   # save
   # 再次确认是否删除
   c = raw_input("Remove?[y/n]:")
   if c.strip().upper() == "Y":
    of = open("{}/data/information.d".format(path), "w")
    for l in hosts:
     of.write(l)
    print("Remove the success!")
    of.close()

def str_format(lable, rule):
 ‘‘‘
 用于验证输入的数据格式
 :param lable: 
 :param rule: 
 :return: 
 ‘‘‘
 while 1:
  print("{} (‘#q‘ exit)".format(lable))
  temp = raw_input().strip()
  m = re.match(r"{}".format(rule), temp)
  if m:
   break
  elif "port" in lable:
   temp = 22
   break
  elif temp.strip() == "#q":
   os.system("clear")
   break
  os.system("clear")
  print("[Warning]:Invalid format")

 return temp

2. 我们再添加一个函数在setting.py用于输出我们的信息,也就是about me。

def about():
 ‘‘‘
 输出关于这个程序的信息
 :return: 
 ‘‘‘
 of = open("{}/bin/about.dat".format(path))
 rf = of.read()
 try:
  info = eval(rf)
  os.system("clear")
  print("================About osnssh================")
  for k,v in info.items():
   print("{}: {}".format(k, v))
 except:
  print("For failure.")
 return

然后在bin目录下面建立个文件about.dat写入我们的一些信息,比如:

{
 "auther":"Allen Woo",
 "Introduction":"In Linux or MAC using SSH, do not need to enter the IP and password for many times",
 "Home page":"",
 "Download address":"https://github.com/osnoob/osnssh",
 "version":"1.1.0",
 "email":"xiaopingwoo@163.com"
}

好了设置程序就这样了:

2. 自动登录远程服务器程序:在bin建个py文件叫auto_ssh.py:

注意:这里我们需要先安装个包叫:pexpect, 用户终端交互,捕捉交互信息实现自动输入密码。

安装pexpect:

pip install pexpect

然后开始写代码:

#!/usr/bin/env python
#-*-coding:utf-8-*-
import os, sys, base64
import pexpect
path = os.path.dirname(os.path.abspath(sys.argv[0]))

def choose():
 # 打开我们的数据文件
 of = open("{}/data/information.d".format(path))
 hosts = of.readlines()
 hosts_temp = []
 for h in hosts:
  if h.strip():
   hosts_temp.append(h)
 hosts = hosts_temp[:]
 l = len(hosts)
 if l <= 0:
  os.system("clear")
  print("[Warning]Please add the host server")
  return
 while 1:

  print("=================SSH===================")
  print("+{}+".format("-"*40))
  print("|  Alias UserName@IP:PORT")
  for i in range(0, l):
   v_list = hosts[i].strip().split(" ")
   print("+{}+".format("-"*40))
   print("| {} | {} {}@{}:{}".format(i+1, v_list[4], v_list[0], v_list[1], v_list[2]))
  print("+{}+".format("-"*40))
  c = raw_input("[SSH]Choose the number or alias(‘#q‘ exit):")
  is_alias = False
  is_y = False
  try:
   c = int(c)
   if c > l or c < 1:
    os.system("clear")
    print("[Warning]:There is no")
    continue
   l_list = hosts[c-1].split(" ")
   name = l_list[0]
   host = l_list[1]
   port = l_list[2]
   password = l_list[3]
   is_y = True

  except:
   is_alias = True
  if is_alias:
   if c.strip() == "#q":
    os.system("clear")
    return
   for h in hosts:
    if c.strip() == h.split(" ")[4].strip():
     l_list = h.split(" ")
     name = l_list[0]
     host = l_list[1]
     port = l_list[2]
     password = l_list[3]
     is_y = True
  if not is_y:
   continue
  # ssh
  # 将加密保存的密码解密
  password = base64.decodestring(password)
  print("In the connection...")
  # 准备远程连接,拼接ip:port
  print("{}@{}".format(name, host))
  if port == "22":
   connection("ssh {}@{}".format(name, host), password)

  else:
   connection("ssh {}@{}:{}".format(name, host, port), password)

def connection(cmd, pwd):
 ‘‘‘
 连接远程服务器
 :param cmd: 
 :param pwd: 
 :return: 
 ‘‘‘
 child = pexpect.spawn(cmd)
 i = child.expect([".*password.*", ".*continue.*?", pexpect.EOF, pexpect.TIMEOUT])
 if( i == 0 ):
  # 如果交互中出现.*password.*,就是叫我们输入密码
  # 我们就把密码自动填入下去
  child.sendline("{}
".format(pwd))
  child.interact()
 elif( i == 1):
  # 如果交互提示是否继续,一般第一次连接时会出现
  # 这个时候我们发送"yes",然后再自动输入密码
  child.sendline("yes
")
  child.sendline("{}
".format(pwd))

  #child.interact() 
 else:
  # 连接失败
  print("[Error]The connection fails")

好了,现在我们只需要启动文件了,也就是打开程序后的第一个菜单

3.再osnssh目录下建个osnssh.py 文件:

#!/usr/bin/env python
#-*-coding:utf-8-*-
import os, sys
sys.path.append("../")
from bin import setting, auto_ssh
path = os.path.dirname(os.path.abspath(sys.argv[0]))
‘‘‘
方便在LINUX终端使用ssh,保存使用的IP:PORT , PASSWORD
自动登录
__author__ = ‘allen woo‘
‘‘‘
def main():
 while 1:

  print("==============OSNSSH [Menu]=============")
  print("1.Connection between a host
2.Add host
3.Remove host
4.About
[Help]: q:quit clear:clear screen")
  print("="*40)
  c = raw_input("Please select a:")
  if c == 1 or c == "1":
   auto_ssh.choose()
  if c == 2 or c == "2":
   setting.add_host_main()
  if c == 3 or c == "3":
   setting.remove_host()
  if c == 4 or c == "4":
   setting.about()
  elif c == "clear":
   os.system("clear")
  elif c == "q" or c == "Q" or c == "quit":
   print("Bye")
   sys.exit()
  else:
   print("
")

if __name__ == ‘__main__‘:
 try:
  of = open("{}/data/information.d".format(path))
 except:
  of = open("{}/data/information.d".format(path), "w")
 of.close()
 main()

终于写完了,我们可以试一试了:

$python osnssh.py