Node.js

Start SSH Tunnel Keyboard-Interactive Authentication

Demonstrates the Chilkat SshTunnel.StartKeyboardAuth method, which begins keyboard-interactive authentication. The only argument is the login name. It returns XML describing the server's prompts, which are answered with ContinueKeyboardAuth.

Background: Keyboard-interactive is the prompt-driven authentication method: the server sends one or more questions — a password, a one-time code, a security question — and the client answers each. This is how a tunnel supports two-factor and other challenge-response schemes. The returned XML says exactly what to ask and whether to mask the input.

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Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  Demonstrates the SshTunnel.StartKeyboardAuth method, which begins keyboard-interactive
    //  authentication.  The only argument is the login name.  It returns XML describing the server's
    //  prompts, which are answered with ContinueKeyboardAuth.

    var tunnel = new chilkat.SshTunnel();

    //  The tunnel forwards accepted local connections to this destination through the SSH server.
    tunnel.DestHostname = "db.internal.example.com";
    tunnel.DestPort = 5432;

    //  Connect to the SSH server.  This performs the TCP/proxy connection and SSH handshake, but
    //  does not authenticate yet.
    var sshPort = 22;
    success = tunnel.Connect("ssh.example.com",sshPort);
    if (success == false) {
        console.log(tunnel.LastErrorText);
        return;
    }

    //  Begin keyboard-interactive authentication.  The returned XML describes the server's prompts.
    var infoRequestXml = tunnel.StartKeyboardAuth("mySshLogin");
    if (tunnel.LastMethodSuccess == false) {
        console.log(tunnel.LastErrorText);
        return;
    }

    console.log(infoRequestXml);

    //  Answer the prompt(s) with ContinueKeyboardAuth, then call BeginAccepting.

    var waitForThreadExit = true;
    success = tunnel.CloseTunnel(waitForThreadExit);
    if (success == false) {
        console.log(tunnel.LastErrorText);
        return;
    }


}

chilkatExample();