我找到了一种使用 powershell 连接到 telnet 服务器的方法。该脚本允许创建一个 tcp 套接字类型的连接并传递命令。

基本上，我使用 System.Net.Sockets.TcpClient 系统.IO.StreamWriter 然后是一系列 WriteLine 和 Flush 方法。

我可以使用 WriteLine 传递常规 ascii 类型的行。 但是我如何传递F3键。

F3是没有ASCII码的，我也不知道按F3时发送给telnet的字节序列是什么。我需要 F3 才能在 telnet session 中执行某些任务。

非常感谢任何帮助。这是我的代码示例:

$x = [char]114 + [char]189 <-- F3 key ???????????????????


Function Get-Telnet
{   Param (
    [Parameter(ValueFromPipeline=$true)],
    [string]$RemoteHost = "HostnameOrIPAddress",
    [string]$Port = "23",
    [int]$WaitTime = 6000,
    [string]$OutputPath = ""
)
#Attach to the remote device, setup streaming requirements
$Socket = New-Object System.Net.Sockets.TcpClient($RemoteHost, $Port)
If ($Socket)
{   $Stream = $Socket.GetStream()
    $Writer = New-Object System.IO.StreamWriter($Stream)
    $Buffer = New-Object System.Byte[] 1024 
    $Encoding = New-Object System.Text.AsciiEncoding

    #Now start issuing the commands
    $Writer.WriteLine([char]08)
    $Writer.Flush()
    Start-Sleep -Milliseconds $WaitTime
    $Writer.WriteLine("TA")
    $Writer.Flush()
    Start-Sleep -Milliseconds $WaitTime
    $Writer.WriteLine("12345")
    $Writer.Flush()
    Start-Sleep -Milliseconds $WaitTime
    $Writer.Write($x)
    $Writer.Flush()


    Start-Sleep -Milliseconds ($WaitTime * 4)
    $Result = ""
    #Save all the results
    While($Stream.DataAvailable) 
    {   $Read = $Stream.Read($Buffer, 0, 1024) 
        $Result += ($Encoding.GetString($Buffer, 0, $Read))
    }
}
Else     
{   $Result = "Unable to connect to host: $($RemoteHost):$Port"
}
#Done, now save the results to a file
$Result | Out-File $OutputPath
}


Get-Telnet -RemoteHost "localhost" -OutputPath c:\windows\temp\telnetlog.imp

更新:

更新了进入 F3 的代码，见下文。 telnet session 仍未收到 F3。每个其他键都有效。 F3 基本上注销此特定 telnet 应用程序的 telnet session 。

$y = "\033[13~"
$z = [System.Text.Encoding]::ASCII.GetBytes($y)
$z
Function Get-Telnet
{   Param (
        [Parameter(ValueFromPipeline=$true)]
        [String[]]$Commands = @([char]08,"TA","12345","N","N","N"),
        [string]$RemoteHost = "HostnameOrIPAddress",
        [string]$Port = "23",
        [int]$WaitTime = 6000,
        [string]$OutputPath = "\\server\share\switchbackup.txt"
        )
        #Attach to the remote device, setup streaming requirements
        $Socket = New-Object System.Net.Sockets.TcpClient($RemoteHost, $Port)
        If ($Socket)
        {   $Stream = $Socket.GetStream()
            $Writer = New-Object System.IO.StreamWriter($Stream)
            $BinWriter = New-Object System.IO.BinaryWriter($stream)
            $Buffer = New-Object System.Byte[] 1024 
            $Encoding = New-Object System.Text.AsciiEncoding

            #Now start issuing the commands
            $Writer.WriteLine([char]08)
            $Writer.Flush()
            Start-Sleep -Milliseconds $WaitTime
            $Writer.WriteLine("TA")
            $Writer.Flush()
            Start-Sleep -Milliseconds $WaitTime
            $Writer.Write("12345")
            $Writer.Flush()
            Start-Sleep -Milliseconds $WaitTime
            $BinWriter.Write($z)
   #        $Writer.Write($z)
        $BinWriter.Flush()
            Start-Sleep -Milliseconds 500
            $BinWriter.Write($z)
            $BinWriter.Flush()
            Start-Sleep -Milliseconds 500       

            #All commands issued, but since the last command is usually going to be
            #the longest let's wait a little longer for it to finish
            Start-Sleep -Milliseconds ($WaitTime * 4)
            $Result = ""
            #Save all the results
            While($Stream.DataAvailable) 
            {   $Read = $Stream.Read($Buffer, 0, 1024) 
                $Result += ($Encoding.GetString($Buffer, 0, $Read))
            }
        }
        Else     
        {   $Result = "Unable to connect to host: $($RemoteHost):$Port"
        }
        #Done, now save the results to a file
       $Result | Out-File $OutputPath
    }

    #Get-Telnet -RemoteHost localhost -Commands "TA" -OutputPath c:\windows             \temp\telnetlog.imp
   Get-Telnet -RemoteHost "localhost" -OutputPath c:\windows\temp\telnetlog.imp

最佳答案

就像控制键组合(ctrl-v、ctrl-c 等)一样，可以发送特殊序列来完成任务。

可以找到一个很好的总结here , 其他网站显示相同的结果。

但是，我不确定这是互联网标准还是依赖于实现/shell，因为我在 RFC 中没有发现任何相关内容。

请注意，Windows cmd(和 powershell)使用 F3 来粘贴最后执行的命令，因此您必须调用 F3 的传输，否则。

关于function - 将 F 键传递到 Powershell (TCP) 中的模拟 Telnet session ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18792563/