详解基于django实现的webssh简单例子

本文介绍了详解基于django实现的webssh简单例子，分享给大家，具体如下：

说明

新建一个 django 程序，本文为 chain。

以下仅为简单例子，实际应用 可根据自己平台情况 进行修改。

打开首页后，需要输入1，后台去登录主机，然后返回登录结果。

正常项目 可以post 主机和登录账户，进行权限判断，然后去后台读取账户密码，进行登录。

djang后台

需要安装以下模块

安装后会有一个版本号报错，不影响

channels==2.0.2channels-redis==2.1.0amqp==1.4.9anyjson==0.3.3asgi-redis==1.4.3asgiref==2.3.0async-timeout==2.0.0attrs==17.4.0cd /tmp/wget https://files.pythonhosted.org/packages/12/2a/e9e4fb2e6b2f7a75577e0614926819a472934b0b85f205ba5d5d2add54d0/Twisted-18.4.0.tar.bz2tar xf Twisted-18.4.0.tar.bz2cd Twisted-18.4.0python3 setup.py install

启动redis

目录

chain/    chain/       settings.py       asgi.py       consumers.py       routing.py  templates/      index.html

settings.py

# django-channels配置CHANNEL_LAYERS = {  "default": {    "BACKEND": "channels_redis.core.RedisChannelLayer",    "CONFIG": {      "hosts": [("127.0.0.1", 6379)],    },  },}# 配置ASGIASGI_APPLICATION = "chain.routing.application"

consumers.py

from asgiref.sync import async_to_syncfrom channels.generic.websocket import WebsocketConsumerimport paramikoimport threadingimport timefrom channels.layers import get_channel_layerchannel_layer = get_channel_layer()class MyThread(threading.Thread):  def __init__(self, id, chan):    threading.Thread.__init__(self)    self.chan = chan  def run(self):    while not self.chan.chan.exit_status_ready():      time.sleep(0.1)      try:        data = self.chan.chan.recv(1024)        async_to_sync(self.chan.channel_layer.group_send)(          self.chan.scope['user'].username,          {            "type": "user.message",            "text": bytes.decode(data)          },        )      except Exception as ex:        print(str(ex))    self.chan.sshclient.close()    return Falseclass EchoConsumer(WebsocketConsumer):  def connect(self):    # 创建channels group， 命名为：用户名，并使用channel_layer写入到redis    async_to_sync(self.channel_layer.group_add)(self.scope['user'].username, self.channel_name)    # 返回给receive方法处理    self.accept()  def receive(self, text_data):    if text_data == '1':      self.sshclient = paramiko.SSHClient()      self.sshclient.load_system_host_keys()      self.sshclient.set_missing_host_key_policy(paramiko.AutoAddPolicy())      self.sshclient.connect('47.104.140.38', 22, 'root', '123456')      self.chan = self.sshclient.invoke_shell(term='xterm')      self.chan.settimeout(0)      t1 = MyThread(999, self)      t1.setDaemon(True)      t1.start()    else:      try:        self.chan.send(text_data)      except Exception as ex:        print(str(ex))  def user_message(self, event):    # 消费    self.send(text_data=event["text"])  def disconnect(self, close_code):    async_to_sync(self.channel_layer.group_discard)(self.scope['user'].username, self.channel_name)