Android™
Android™
SSH Tunnel Authenticate with a Password
See more SSH Tunnel Examples
Demonstrates the Chilkat SshTunnel.AuthenticatePw method, which authenticates the SSH connection with a login name and password. The first argument is the login and the second is the password. Connect first, and call BeginAccepting afterward.
Background: Password authentication is the simplest option, but the password is a secret and should never be a hard-coded literal — obtain it from an interactive prompt, an environment variable, or a secrets vault. Public-key authentication is generally preferred for the unattended, long-running services that tunnels often are.
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.AuthenticatePw method, which authenticates the SSH connection with
// a login name and password. The 1st argument is the login and the 2nd is the password.
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;
}
// 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 = tunnel.AuthenticatePw("mySshLogin",password);
if (success == false) {
Log.i(TAG, tunnel.lastErrorText());
return;
}
Log.i(TAG, "Authenticated.");
// After authenticating, call BeginAccepting to start listening for local connections to forward.
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."
}
}