VBScript

SSH to Cisco Switch - Processing "More" Responses

See more SSH Examples

Demonstrates connecting to a Cisco switch, running a command to enable privileged mode, then running a command to get a paged response requiring the SPACE char to be sent to process "--More--". VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

set ssh = CreateObject("Chilkat.Ssh")

success = ssh.Connect("SSH_SERVER_DOMAIN_OR_IP_ADDRESS",22)
If (success <> 1) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

' Authenticate using login/password:
success = ssh.AuthenticatePw("myLogin","myPassword")
If (success <> 1) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

' Start a shell session.
channelNum = ssh.QuickShell()
If (channelNum < 0) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

' If the CISCO switch returns a prompt with ">", then read until we get the prompt.
' (It's not actually required that we do this, but it helps to know that all is OK at this point..)
success = ssh.ChannelReceiveUntilMatch(channelNum,">","utf-8",1)
If (success <> 1) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

' Show what we received so far:
outFile.WriteLine(ssh.GetReceivedText(channelNum,"utf-8"))

' Send the "ena" command to enable privileged mode.
' (For the Cisco switch, terminate command with a single CR char.)
success = ssh.ChannelSendString(channelNum,"ena" & vbCr,"utf-8")
' Assume success for this example to make it shorter..

' Read to the "Password:" prompt.
success = ssh.ChannelReceiveUntilMatch(channelNum,"Password:","utf-8",1)
If (success <> 1) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

' Show what we received...
outFile.WriteLine(ssh.GetReceivedText(channelNum,"utf-8"))

' Send the password.
success = ssh.ChannelSendString(channelNum,"MY_PASSWORD_FOR_ELEVATED_PRIVILEGE" & vbCr,"utf-8")

' The prompt now changes from "Something>" to "Something#>
' Read until the new prompt..
success = ssh.ChannelReceiveUntilMatch(channelNum,"#","utf-8",1)
If (success <> 1) Then
    outFile.WriteLine(ssh.LastErrorText)
    WScript.Quit
End If

' Show what we received...
outFile.WriteLine(ssh.GetReceivedText(channelNum,"utf-8"))

' Send the "show running-config" command.
' The response will be in multiple pages, each ending with "--More--" and requiring a SPACE bar to be sent
' to get the next page.
success = ssh.ChannelSendString(channelNum,"show running-config" & vbCr,"utf-8")

' Consume the response until we end with another prompt.
set saMatch = CreateObject("Chilkat.StringArray")
' Change "YOUR_PROMPT" to your actual prompt.  We don't want to check for only "#" because
' it's not specific enough.  The data in the response could contain the "#" char...
success = saMatch.Append("YOUR_PROMPT#")
success = saMatch.Append("--More--")

set sbReceived = CreateObject("Chilkat.StringBuilder")
moreComing = 1
Do While (moreComing = 1)

    success = ssh.ChannelReceiveUntilMatchN(channelNum,saMatch,"utf-8",1)
    If (success <> 1) Then
        outFile.WriteLine(ssh.LastErrorText)
        WScript.Quit
    End If

    moreComing = 0

    sbReceived.Clear 
    success = sbReceived.Append(ssh.GetReceivedText(channelNum,"utf-8"))

    outFile.WriteLine(sbReceived.GetAsString())

    If (sbReceived.Contains("--More--",1) = 1) Then
        moreComing = 1

        ' Send a SPACE char just as if we were interactively pressing the SPACE key to get more output.
        success = ssh.ChannelSendString(channelNum," ","utf-8")
    End If

Loop

ssh.Disconnect 

outFile.Close