用python写个自动SSH登录远程服务器的小工具(实例)

1066次阅读  |  发布于5年以前

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:

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("\n\nAgain:")

    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("\n")
      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("\n{} {} {} {} {}".format(name.strip("\n"), host_ip.strip("\n"), host_port, password.strip("\n"), alias.strip("\n")))
     of.close()
     print("Add the success:{} {}@{}:{}".format(alias.strip("\n"), name.strip("\n"), host_ip.strip("\n"), host_port, password.strip("\n")))
     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("{}\n".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\n")
      child.sendline("{}\n".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\n2.Add host\n3.Remove host\n4.About\n[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("\n")

    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

以上这篇用python写个自动SSH登录远程服务器的小工具(实例)就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持脚本之家。

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