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.htmlsettings.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)asgi.py
import osimport djangofrom channels.routing import get_default_applicationos.environ.setdefault("DJANGO_SETTINGS_MODULE", "chain.settings")django.setup()application = get_default_application()routing.py
from channels.auth import AuthMiddlewareStackfrom channels.routing import URLRouter, ProtocolTypeRouterfrom django.urls import pathfrom .consumers import EchoConsumerapplication = ProtocolTypeRouter({ ???"websocket": AuthMiddlewareStack( ???????URLRouter([ ???????????path(r"ws/", EchoConsumer), ???????????# path(r"stats/", StatsConsumer), ???????]) ???)})网页设置：
index.html
<!DOCTYPE html><html lang="en"><head> ???<meta charset="UTF-8"> ???<title>django webssh 例子</title> ???<link href="/static/css/plugins/ztree/awesomeStyle/awesome.css" rel="stylesheet"> ???<link href="/static/webssh_static/css/xterm.min.css" rel="stylesheet" type="text/css"/> ???<style> ???????body { ???????????padding-bottom: 30px; ???????} ???????.terminal { ???????????border: #000 solid 5px; ???????????font-family: cursive; ???????{# ???????????????font-family: Arial, Helvetica, Tahoma ,"Monaco", "DejaVu Sans Mono", "Liberation Mono", sans-serif;#}{# ???????????????font-family: Tahoma, Helvetica, Arial, sans-serif;#}{# ???????????????font-family: "\5B8B\4F53","","Monaco", "DejaVu Sans Mono", "Liberation Mono", "Microsoft YaHei", monospace;#} font-size: 15px; ???????{# ???????????????color: #f0f0f0;#} background: #000; ???????{# ???????????????width: 893px;#}{# ???????????????height: 550px;#} box-shadow: rgba(0, 0, 0, 0.8) 2px 2px 20px; ???????} ???????.reverse-video { ???????????color: #000; ???????????background: #f0f0f0; ???????} ???</style></head><body><div id="terms"></div></body><script src="/static/webssh_static/js/xterm.min.js"></script><script> ???var socket = new WebSocket(‘ws://‘ + window.location.host + ‘/ws/‘); ???socket.onopen = function () { ???????var term = new Terminal(); ???????term.open(document.getElementById(‘terms‘)); ???????term.on(‘data‘, function (data) { ???????????console.log(data); ???????????socket.send(data); ???????}); ???????socket.onmessage = function (msg) { ???????????console.log(msg); ???????????console.log(msg.data); ???????????term.write(msg.data); ???????}; ???????socket.onerror = function (e) { ???????????console.log(e); ???????}; ???????socket.onclose = function (e) { ???????????console.log(e); ???????????term.destroy(); ???????}; ???};</script></html>基于 django 实现的 webssh 简单例子
原文地址：http://blog.51cto.com/hequan/2145007