(Android™) REST through SSH Tunnel

Demonstrates how to connect through an SSH Tunnel (via port-forwarding) to make REST API calls.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// 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);

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

    CkSocket tunnel = new CkSocket();

    String sshHostname = "sftp.example.com";
    int sshPort = 22;

    // Connect to an SSH server and establish the SSH tunnel:
    boolean success = tunnel.SshOpenTunnel(sshHostname,sshPort);
    if (success != true) {
        Log.i(TAG, tunnel.lastErrorText());
        return;
        }

    // Authenticate with the SSH server via a login/password
    // or with a public key.
    // This example demonstrates SSH password authentication.
    success = tunnel.SshAuthenticatePw("mySshLogin","mySshPassword");
    if (success != true) {
        Log.i(TAG, tunnel.lastErrorText());
        return;
        }

    //  OK, the SSH tunnel is setup.  Now open a channel within the tunnel.
    //  (Any number of channels may be created from the same SSH tunnel.
    //  Multiple channels may coexist at the same time.)

    // This example connects to a REST server through the SSH tunnel.
    // It will connect to the Amazon AWS service for this example.
    CkRest rest = new CkRest();
    CkSocket channel;

    boolean bTls = true;
    int port = 443;
    int maxWaitMs = 5000;

    // This returns a socket object that is a single channel within the SSH tunnel.
    channel = tunnel.SshOpenChannel("s3.amazonaws.com",port,bTls,maxWaitMs);
    if (tunnel.get_LastMethodSuccess() != true) {
        Log.i(TAG, tunnel.lastErrorText());
        return;
        }

    // Use the connection.  (This connection is a TLS running on an SSH channel through an SSH tunnel.
    // In other words, TLS is wrapped within the SSH tunnel.)
    success = rest.UseConnection(channel,true);
    if (success != true) {
        Log.i(TAG, rest.lastErrorText());

        return;
        }

    // Provide AWS credentials for the REST call.
    CkAuthAws authAws = new CkAuthAws();
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("s3");
    success = rest.SetAuthAws(authAws);

    // List all buckets for the account...
    String responseXml = rest.fullRequestNoBody("GET","/");
    if (rest.get_LastMethodSuccess() != true) {
        Log.i(TAG, rest.lastErrorText());

        return;
        }

    CkXml xml = new CkXml();
    success = xml.LoadXml(responseXml);

    // Show the full XML returned.
    Log.i(TAG, xml.getXml());

    // Iterate over the buckets, showing each bucket name.
    success = xml.FindChild2("Buckets");
    if (xml.FirstChild2() == true) {
        Log.i(TAG, xml.getChildContent("Name"));
        while ((xml.NextSibling2() == true)) {
            Log.i(TAG, xml.getChildContent("Name"));
            }

        }

    // Move the internal pointer back to the root node.
    xml.GetRoot2();


  }

  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."
  }
}