Android™
Android™
Start SSH Tunnel Keyboard-Interactive Authentication
See more SSH Tunnel Examples
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.
Chilkat Android™ Downloads
// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;
import android.app.Activity;
import com.chilkatsoft.*;
import android.widget.TextView;
import android.os.Bundle;
public class SimpleActivity extends Activity {
private static final String TAG = "Chilkat";
// Called when the activity is first created.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
boolean 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.
CkSshTunnel tunnel = new CkSshTunnel();
// The tunnel forwards accepted local connections to this destination through the SSH server.
tunnel.put_DestHostname("db.internal.example.com");
tunnel.put_DestPort(5432);
// Connect to the SSH server. This performs the TCP/proxy connection and SSH handshake, but
// does not authenticate yet.
int sshPort = 22;
success = tunnel.Connect("ssh.example.com",sshPort);
if (success == false) {
Log.i(TAG, tunnel.lastErrorText());
return;
}
// Begin keyboard-interactive authentication. The returned XML describes the server's prompts.
String infoRequestXml = tunnel.startKeyboardAuth("mySshLogin");
if (tunnel.get_LastMethodSuccess() == false) {
Log.i(TAG, tunnel.lastErrorText());
return;
}
Log.i(TAG, infoRequestXml);
// Answer the prompt(s) with ContinueKeyboardAuth, then call BeginAccepting.
boolean waitForThreadExit = true;
success = tunnel.CloseTunnel(waitForThreadExit);
if (success == false) {
Log.i(TAG, tunnel.lastErrorText());
return;
}
}
static {
System.loadLibrary("chilkat");
// Note: If the incorrect library name is passed to System.loadLibrary,
// then you will see the following error message at application startup:
//"The application <your-application-name> has stopped unexpectedly. Please try again."
}
}