Android™
Android™
Continue SSH Tunnel Keyboard-Interactive Authentication
See more SSH Tunnel Examples
Demonstrates the Chilkat SshTunnel.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, BeginAccepting still must be called before the tunnel forwards traffic.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.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.
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 to receive the server's prompt(s).
String infoRequestXml = tunnel.startKeyboardAuth("mySshLogin");
if (tunnel.get_LastMethodSuccess() == false) {
Log.i(TAG, tunnel.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.
String password = "mySshPassword";
// Submit the response (typically the password). The returned XML indicates the next prompt or
// the final result.
String result = tunnel.continueKeyboardAuth(password);
if (tunnel.get_LastMethodSuccess() == false) {
Log.i(TAG, tunnel.lastErrorText());
return;
}
Log.i(TAG, result);
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."
}
}