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使用Python实现SSH隧道界面功能

作者:清水雅然君

这篇文章主要介绍了使用Python实现一个SSH隧道界面功能,界面使用tkinter实现,左边是输入隧道的信息,右边为历史列表,本文通过示例代码给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,需要的朋友参考下吧

开发原因

MobaXterm作为一个全能型终端神器,功能十分强大,我经常使用其中隧道功能,使用内部无法直接服务器,查询数据,一般来说,一个本地端口对于一个隧道,但是MobaXterm,免费版本最多只能建立三个隧道,比如,我需要一次查询统计,就会用到四个隧道的操作,就非常不方便,需要调整一个隧道,于是,便用python写了多隧道的客户端

效果图

界面使用tkinter实现,左边是输入隧道的信息,右边为历史列表,

源码分析

构建隧道

def operate_sshtunnel(tunnel_info):
    try:
        tunnel = SSHTunnelForwarder(
            (tunnel_info.ssh_ip, int(tunnel_info.ssh_port)),
            ssh_username=tunnel_info.ssh_username,
            ssh_password=tunnel_info.ssh_password,
            remote_bind_address=(tunnel_info.remote_ip, int(tunnel_info.remote_port)),
            local_bind_address=('127.0.0.1', int(tunnel_info.localhost_port))
        )
        return tunnel
    except Exception as e:
        print(e.args[0])
        messagebox.showinfo(title='连接异常', message=e.args[0])
        return

这段代码就是整个功能的核心代码,使用SSHTunnelForwarder模块的sshtunnel

构建隧道,由于我只需要一个本地端口访问远程远程服务器的功能,默认本地端口固定为127.0.0.1

初始化加载

def read_json():
    if os.path.exists('tunnel_data.json'):
        with open('tunnel_data.json', 'r', encoding='utf-8') as load_f:
            data = load_f.read()
        if len(data) > 0:
            json_str = cryptocode.decrypt(data, "EjdeB55cvQMN2WHf")
            return json.loads(json_str)
        else:
            return
def load_config():
    load_arr = read_json()
    if load_arr is not None:
        for tunnel_info_json in load_arr:
            tunnel_info = tunnel_info_class()
            tunnel_info.localhost_port = tunnel_info_json['localhost_port']
            tunnel_info.ssh_ip = tunnel_info_json['ssh_ip']
            tunnel_info.ssh_port = tunnel_info_json['ssh_port']
            tunnel_info.ssh_username = tunnel_info_json['ssh_username']
            tunnel_info.ssh_password = cryptocode.decrypt(tunnel_info_json['ssh_password'], "F1jgEg1arVyxmUqC")
            tunnel_info.remote_ip = tunnel_info_json['remote_ip']
            tunnel_info.remote_port = tunnel_info_json['remote_port']
            tunnel_info.tunnel_name = tunnel_info_json['tunnel_name']
            tree_id = insert_tree_view(tunnel_info, "未启动")
            tunnel_infos.update({tree_id: tunnel_info})

read_json是读取历史记录,其中使用 cryptocode模版对明文的json进行加密,并且对ssh_password进行再加密

开始服务

def start_tunnel():
    iid = treeview.selection()
    if len(iid) > 0:
        if iid not in tunnel_infos_start.keys():
            tunnel_info = tunnel_infos[iid[0]]
            tunnel = ssl_tunnel.operate_sshtunnel(tunnel_info)
            if tunnel is not None:
                try:
                    tunnel.start()
                    tunnel_infos_start.update({iid[0]: tunnel})
                    update_tree_view(iid[0], tunnel_info, "启动")
                    pass
                except Exception  as e:
                    messagebox.showinfo(title='连接异常', message=e.args[0])
    else:
        messagebox.showinfo(title='选择异常', message="未选择列表")

tunnel_infos为报存的隧道信息字典,tunnel_infos_start为报存的已经启动的隧道字典,先获取点击到的行的ID,然后查询是否在已启动的字典中,如果不存在则,启动隧道,同时更新到tunnel_infos_start

停止服务

def stop_tunnel():
    iid = treeview.selection()
    if len(iid) > 0:
        if iid[0] in tunnel_infos_start.keys():
            tunnel_info = tunnel_infos[iid[0]]
            tunnel = tunnel_infos_start[iid[0]]
            if tunnel is not None:
                try:
                    tunnel.stop()
                    tunnel_infos_start.pop(iid[0])
                    update_tree_view(iid[0], tunnel_info, "未启动")
                    pass
                except Exception  as e:
                    messagebox.showinfo(title='连接异常', message=e.args[0])
    else:
        messagebox.showinfo(title='选择异常', message="未选择列表")

这段代码操作和启动相反,则是从停止掉服务,同时从tunnel_infos_start中移除掉该隧道

移除服务

def remove_tunnel():
    iid = treeview.selection()
    if len(iid) > 0:
        if iid[0] in tunnel_infos_start.keys():
            stop_tunnel()
        ## 从列表删除
        treeview.delete(iid)
        tunnel_infos.pop(iid[0])
        write_json()
    else:
        messagebox.showinfo(title='选择异常', message="未选择列表")

移除服务的时候,会判断IDtunnel_infos_start是否存在,存在则表明当前删除的隧道还在启动中,则停止这个服务,同时从tunnel_infos移除这配置,更新tunnel_data.json文件

不足之处

虽然这个简单的工具可以满足超过多个隧道的使用,但是每次报存的时候,都要更新tunnel_data.json文件,如果隧道比较多,加载比较费时间;同时由于设计界面的时候,考虑比较简单,并不支持修改的功能,只能删除错误的记录,然后重新报存

源码地址

https://github.com/liuhao192/ssh_tunnel

到此这篇关于使用Python实现SSH隧道界面功能的文章就介绍到这了,更多相关python SSH隧道内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

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