python

超轻量级php框架startmvc

用python写个自动SSH登录远程服务器的小工具(实例)

更新时间:2020-05-02 11:48 作者:startmvc
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

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。