Node.js

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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function chilkatExample() {

    var success = 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.

    var sftp = new chilkat.SFtp();

    //  Step 1: Connect the SSH transport.  Port 22 is the usual port.
    var port = 22;
    success = sftp.Connect("sftp.example.com",port);
    if (success == false) {
        console.log(sftp.LastErrorText);
        return;
    }

    //  Begin keyboard-interactive authentication to receive the server's prompt(s).
    var infoRequestXml = sftp.StartKeyboardAuth("mySshLogin");
    if (sftp.LastMethodSuccess == false) {
        console.log(sftp.LastErrorText);
        return;
    }

    //  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.
    var password = "mySshPassword";

    //  Submit the response (typically the password).  The returned XML indicates the next prompt or
    //  the final result.
    var result = sftp.ContinueKeyboardAuth(password);
    if (sftp.LastMethodSuccess == false) {
        console.log(sftp.LastErrorText);
        return;
    }

    console.log(result);

    //  On success, initialize the SFTP subsystem.
    success = sftp.InitializeSftp();
    if (success == false) {
        console.log(sftp.LastErrorText);
        return;
    }

    sftp.Disconnect();

}

chilkatExample();