(Android™) SCP Upload Contents of String to Remote File

Demonstrates how to upload the contents of a string variable using the SCP protocol (Secure Copy Protocol over SSH). The text is uploaded to a file in specific remote directory. If the file did not already exist, it is created. If it already existed, it is overwritten.

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.

    CkSsh ssh = new CkSsh();

    // Connect to an SSH server:
    String hostname;
    int port;

    // Hostname may be an IP address or hostname:
    hostname = "www.some-ssh-server.com";
    port = 22;

    boolean success = ssh.Connect(hostname,port);
    if (success != true) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    // Wait a max of 5 seconds when reading responses..
    ssh.put_IdleTimeoutMs(5000);

    // Authenticate using login/password:
    success = ssh.AuthenticatePw("myLogin","myPassword");
    if (success != true) {
        Log.i(TAG, ssh.lastErrorText());
        return;
        }

    // Once the SSH object is connected and authenticated, we use it
    // as the underlying transport in our SCP object.
    CkScp scp = new CkScp();

    success = scp.UseSsh(ssh);
    if (success != true) {
        Log.i(TAG, scp.lastErrorText());
        return;
        }

    String content = "This string will be the contents of the remote file.";
    String remotePath = "uploads/text/testUtf8.txt";

    // The utf-8 byte representation of the string will be uploaded.
    // See https://www.chilkatsoft.com/p/p_463.asp for a list of valid charsets.
    String charset = "utf-8";

    // This uploads to the "uploads/text" directory relative to the HOME
    // directory of the SSH user account.  
    // Note: The remote target directory must already exist on the SSH server.
    success = scp.UploadString(remotePath,content,charset);
    if (success != true) {
        Log.i(TAG, scp.lastErrorText());
        return;
        }

    remotePath = "uploads/text/testUtf8_withBOM.txt";

    // To include the utf-8 preamble (also known as the BOM),
    // prefix the charset name with "bom:".  Any charset that can 
    // optionally include a BOM can be specified in this way.
    charset = "bom:utf-8";

    // Uploads to a remote file that contains text in the 
    // utf-8 representation, including the BOM at the start of the file.
    success = scp.UploadString(remotePath,content,charset);
    if (success != true) {
        Log.i(TAG, scp.lastErrorText());
        return;
        }

    Log.i(TAG, "SCP upload string success.");

    // Disconnect
    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."
  }
}