(Android™) AWS Transfer for SFTP (Amazon S3)

Once you've setup your AWS Transfer for SFTP in the AWS Console, interacting with it is no different than any other SSH/SFTP server. AWS will provide a private key in PEM format. It is used for authentication (instead of a password).

For more information, see https://docs.aws.amazon.com/transfer/latest/userguide/getting-started-use-the-service.html

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

    CkSFtp sftp = new CkSFtp();

    // Connect to the AWS SFTP server.
    // Change the domain to your value.
    String domain = "s-123456df999999fab.server.transfer.eu-west-2.amazonaws.com";
    int port = 22;
    boolean success = sftp.Connect(domain,port);
    if (success == false) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    // Load your AWS SFTP private key PEM file..
    CkSshKey sshKey = new CkSshKey();
    String keyText = sshKey.loadText("qa_data/pem/s3_sftp_privateKey.pem");
    if (sshKey.get_LastMethodSuccess() != true) {
        Log.i(TAG, sshKey.lastErrorText());
        return;
        }

    success = sshKey.FromOpenSshPrivateKey(keyText);
    if (success == false) {
        Log.i(TAG, sshKey.lastErrorText());
        return;
        }

    // Authenticate with the SSH server using the private key.
    success = sftp.AuthenticatePk("myUsername",sshKey);
    if (success == false) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    // After authenticating, the SFTP subsystem must be initialized:
    success = sftp.InitializeSftp();
    if (success == false) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    // Upload from the local file to the SSH server.
    // Important -- the remote filepath is the 1st argument,
    // the local filepath is the 2nd argument;
    String remoteFilePath = "hamlet.xml";
    String localFilePath = "c:/temp/hamlet.xml";

    success = sftp.UploadFileByName(remoteFilePath,localFilePath);
    if (success == false) {
        Log.i(TAG, sftp.lastErrorText());
        return;
        }

    Log.i(TAG, "Success.");

  }

  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."
  }
}