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

具体的演示,就是我在文章开头放了张GIF动画图片源码加群

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