Windows 自动 telnet [英] Windows automate telnet
本文介绍了Windows 自动 telnet的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想运行一组通常在 telnet 中运行的命令(来自 c#).
I would like to run a set of commands that would typically be run in telnet(from c#).
例如我想运行以下
using System;
using System.Diagnostics;
namespace InteractWithConsoleApp
{
class Program
{
static void Main(string[] args)
{
ProcessStartInfo cmdStartInfo = new ProcessStartInfo();
cmdStartInfo.FileName = @"C:\Windows\System32\cmd.exe";
cmdStartInfo.RedirectStandardOutput = true;
cmdStartInfo.RedirectStandardError = true;
cmdStartInfo.RedirectStandardInput = true;
cmdStartInfo.UseShellExecute = false;
cmdStartInfo.CreateNoWindow = true;
Process cmdProcess = new Process();
cmdProcess.StartInfo = cmdStartInfo;
cmdProcess.ErrorDataReceived += cmd_Error;
cmdProcess.OutputDataReceived += cmd_DataReceived;
cmdProcess.EnableRaisingEvents = true;
cmdProcess.Start();
cmdProcess.BeginOutputReadLine();
cmdProcess.BeginErrorReadLine();
cmdProcess.StandardInput.WriteLine("telnet telehack.com");
int milliseconds = 2000;
System.Threading.Thread.Sleep(milliseconds);
cmdProcess.StandardInput.WriteLine("exit");
cmdProcess.StandardInput.WriteLine("exit");
cmdProcess.WaitForExit();
}
static void cmd_DataReceived(object sender, DataReceivedEventArgs e)
{
Console.WriteLine(e.Data);
}
static void cmd_Error(object sender, DataReceivedEventArgs e)
{
Console.WriteLine(e.Data);
}
}
}
并保持 telnet 打开以运行后续命令.例如，对于上面的问题，我想运行并接收以下输出，但我没有收到任何 telnet 输出.它不接收任何输出.这是相关的.
and keep telnet open to run subsequent commands. For example for the question above I would like to run and receive the following output, but I don't receive any of the telnet output. It doesn't receive any output. This is related.
telnet telehack.com
> Connected to TELEHACK port 53
It is 2:33 pm on Tuesday, September 1, 2015 in Mountain View, California, USA.
There are 31 local users. There are 24906 hosts on the network.
May the command line live forever.
Command, one of the following:
? ac advent basic cal calc
ching clear clock cowsay date echo
eliza factor figlet finger fnord geoip
help hosts ipaddr joke login md5
morse newuser notes octopus phoon pig
ping primes privacy rain rand rfc
rig roll rot13 sleep starwars traceroute
units uptime usenet users uumap uupath
uuplot weather when zc zork zrun
.calc
calc>2+2
> 4
推荐答案
根据评论我了解到您可以使用实际的 telnet 协议实现而不是调用 telnet.exe，所以
Based on comments I understand that you can use actual telnet protocol implementation instead of calling to telnet.exe, so
Form1.cs
using MinimalisticTelnet;
using System;
using System.Text.RegularExpressions;
using System.Windows.Forms;
namespace Telnet
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private MinimalisticTelnet.TelnetConnection _tc;
private void Form1_Load(object sender, EventArgs e)
{
_tc = new TelnetConnection("telehack.com", 23);
}
private void timer1_Tick(object sender, EventArgs e)
{
ProcessOutput();
}
private void btnSendCommand_Click(object sender, EventArgs e)
{
if (_tc.IsConnected)
{
_tc.WriteLine(tbCommand.Text.Trim());
tbCommand.Clear();
tbCommand.Focus();
ProcessOutput();
}
}
private void ProcessOutput()
{
if (!_tc.IsConnected)
return;
var s = _tc.Read();
s = Regex.Replace(s, @"\x1b\[([0-9,A-Z]{1,2}(;[0-9]{1,2})?(;[0-9]{3})?)?[m|K]?", "");
tbOutput.AppendText(s);
}
}
}
TelnetInterface.cs
TelnetInterface.cs
// minimalistic telnet implementation
// conceived by Tom Janssens on 2007/06/06 for codeproject
//
// http://www.corebvba.be
using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Sockets;
namespace MinimalisticTelnet
{
enum Verbs
{
WILL = 251,
WONT = 252,
DO = 253,
DONT = 254,
IAC = 255
}
enum Options
{
SGA = 3
}
class TelnetConnection
{
TcpClient tcpSocket;
int TimeOutMs = 100;
public TelnetConnection(string Hostname, int Port)
{
tcpSocket = new TcpClient(Hostname, Port);
}
public string Login(string Username, string Password, int LoginTimeOutMs)
{
int oldTimeOutMs = TimeOutMs;
TimeOutMs = LoginTimeOutMs;
string s = Read();
if (!s.TrimEnd().EndsWith(":"))
throw new Exception("Failed to connect : no login prompt");
WriteLine(Username);
s += Read();
if (!s.TrimEnd().EndsWith(":"))
throw new Exception("Failed to connect : no password prompt");
WriteLine(Password);
s += Read();
TimeOutMs = oldTimeOutMs;
return s;
}
public void WriteLine(string cmd)
{
Write(cmd + Environment.NewLine);
}
public void Write(string cmd)
{
if (!tcpSocket.Connected) return;
byte[] buf = System.Text.ASCIIEncoding.ASCII.GetBytes(cmd.Replace("\0xFF", "\0xFF\0xFF"));
tcpSocket.GetStream().Write(buf, 0, buf.Length);
}
public string Read()
{
if (!tcpSocket.Connected) return null;
StringBuilder sb = new StringBuilder();
do
{
ParseTelnet(sb);
System.Threading.Thread.Sleep(TimeOutMs);
} while (tcpSocket.Available > 0);
return sb.ToString();
}
public bool IsConnected
{
get { return tcpSocket.Connected; }
}
void ParseTelnet(StringBuilder sb)
{
while (tcpSocket.Available > 0)
{
int input = tcpSocket.GetStream().ReadByte();
switch (input)
{
case -1:
break;
case (int)Verbs.IAC:
// interpret as command
int inputverb = tcpSocket.GetStream().ReadByte();
if (inputverb == -1) break;
switch (inputverb)
{
case (int)Verbs.IAC:
//literal IAC = 255 escaped, so append char 255 to string
sb.Append(inputverb);
break;
case (int)Verbs.DO:
case (int)Verbs.DONT:
case (int)Verbs.WILL:
case (int)Verbs.WONT:
// reply to all commands with "WONT", unless it is SGA (suppres go ahead)
int inputoption = tcpSocket.GetStream().ReadByte();
if (inputoption == -1) break;
tcpSocket.GetStream().WriteByte((byte)Verbs.IAC);
if (inputoption == (int)Options.SGA)
tcpSocket.GetStream().WriteByte(inputverb == (int)Verbs.DO ? (byte)Verbs.WILL : (byte)Verbs.DO);
else
tcpSocket.GetStream().WriteByte(inputverb == (int)Verbs.DO ? (byte)Verbs.WONT : (byte)Verbs.DONT);
tcpSocket.GetStream().WriteByte((byte)inputoption);
break;
default:
break;
}
break;
default:
sb.Append((char)input);
break;
}
}
}
}
}
这是带有 2 个文本框和 1 个按钮和一个计时器的 Windows 窗体应用程序(间隔为 1000 毫秒).我使用了 CodeProject 中的代码(在原始问题中链接)并进行了一些更改以使其实际工作.
This is Windows Forms app with 2 textboxes and 1 button and a timer (interval is 1000ms). I've used code from CodeProject (linked in original question) with some changes to make it actually work.
这篇关于Windows 自动 telnet的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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