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==2.0.2 channels-redis==2.1.0 amqp==1.4.9 anyjson==0.3.3 asgi-redis==1.4.3 asgiref==2.3.0 async-timeout==2.0.0 attrs==17.4.0 cd /tmp/ wget https://files.pythonhosted.org/packages/12/2a/e9e4fb2e6b2f7a75577e0614926819a472934b0b85f205ba5d5d2add54d0/Twisted-18.4.0.tar.bz2 tar xf Twisted-18.4.0.tar.bz2 cd Twisted-18.4.0 python3 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ASGI ASGI_APPLICATION = "chain.routing.application"
consumers.py
from asgiref.sync import async_to_sync from channels.generic.websocket import WebsocketConsumer import paramiko import threading import time from channels.layers import get_channel_layer channel_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 False class 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 os import django from channels.routing import get_default_application os.environ.setdefault("DJANGO_SETTINGS_MODULE", "chain.settings") django.setup() application = get_default_application() routing.py from channels.auth import AuthMiddlewareStack from channels.routing import URLRouter, ProtocolTypeRouter from django.urls import path from .consumers import EchoConsumer application = 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="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>
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