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
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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
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chain/ chain/ settings.py asgi.py consumers.py routing.py templates/ index.html |
settings.py
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# 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
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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
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import osimport djangofrom channels.routing import get_default_applicationos.environ.setdefault("DJANGO_SETTINGS_MODULE", "chain.settings")django.setup()application = get_default_application()routing.pyfrom 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
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<!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="external nofollow" rel="stylesheet"> <link href="/static/webssh_static/css/xterm.min.css" rel="external nofollow" 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> |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://blog.51cto.com/hequan/2145007
