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Continue SFTP Keyboard-Interactive Authentication

Demonstrates the Chilkat SFtp.ContinueKeyboardAuth method, which submits a response to a keyboard-interactive prompt. The only argument is the response text; for a request with multiple prompts, an XML response is supplied instead. It returns XML indicating the next prompt or the final result.

Background: This is the second half of the exchange started by StartKeyboardAuth. A server may issue several rounds of prompts, so a robust client loops: submit answers, read the returned XML, and continue until it sees success or failure. On success, remember that InitializeSftp still must be called before any file operation.

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Local $bSuccess = False

;  Demonstrates the SFtp.ContinueKeyboardAuth method, which submits a response to a
;  keyboard-interactive prompt.  The only argument is the response.  For multiple prompts, an
;  XML response is supplied instead.

$oSftp = ObjCreate("Chilkat.SFtp")

;  Step 1: Connect the SSH transport.  Port 22 is the usual port.
Local $iPort = 22
$bSuccess = $oSftp.Connect("sftp.example.com",$iPort)
If ($bSuccess = False) Then
    ConsoleWrite($oSftp.LastErrorText & @CRLF)
    Exit
EndIf

;  Begin keyboard-interactive authentication to receive the server's prompt(s).
Local $sInfoRequestXml = $oSftp.StartKeyboardAuth("mySshLogin")
If ($oSftp.LastMethodSuccess = False) Then
    ConsoleWrite($oSftp.LastErrorText & @CRLF)
    Exit
EndIf

;  Normally you would not hard-code the password in source.  You should instead obtain it
;  from an interactive prompt, environment variable, or a secrets vault.
Local $sPassword = "mySshPassword"

;  Submit the response (typically the password).  The returned XML indicates the next prompt or
;  the final result.
Local $sResult = $oSftp.ContinueKeyboardAuth($sPassword)
If ($oSftp.LastMethodSuccess = False) Then
    ConsoleWrite($oSftp.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite($sResult & @CRLF)

;  On success, initialize the SFTP subsystem.
$bSuccess = $oSftp.InitializeSftp()
If ($bSuccess = False) Then
    ConsoleWrite($oSftp.LastErrorText & @CRLF)
    Exit
EndIf

$oSftp.Disconnect