Get SSH Server Authentication Methods

See more SSH Examples

Demonstrates getting the authentication methods advertised by an SSH server. Connect first but do not authenticate, then call GetAuthMethods, which returns a lowercase, comma-separated list such as publickey,password,keyboard-interactive.

Important: Querying the authentication methods intentionally disconnects from the server, so reconnect before authenticating.

// 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;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  Demonstrates getting the authentication methods advertised by an SSH server.

    CkSsh ssh = new CkSsh();

    int port = 22;

    //  The server must be connected, but not yet authenticated.
    success = ssh.Connect("ssh.example.com",port);
    if (success == false) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    //  Returns a lowercase, comma-separated list, such as:
    //      publickey,password,keyboard-interactive
    String authMethods = ssh.getAuthMethods();
    if (ssh.get_LastMethodSuccess() == false) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    Log.i(TAG, "Authentication methods supported by this server: " + authMethods);

    //  IMPORTANT: Querying the authentication methods intentionally disconnects from the server.
    //  Reconnect before authenticating.
    success = ssh.Connect("ssh.example.com",port);
    if (success == false) {
        Log.i(TAG, ssh.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";

    success = ssh.AuthenticatePw("mySshLogin",password);
    if (success == false) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    Log.i(TAG, "SSH authentication successful.");

    ssh.Disconnect();

  }

  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."
  }
}