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package com.clusterrr.usbserialtelnetserver;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.hardware.usb.UsbDeviceConnection;
import android.hardware.usb.UsbManager;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
import androidx.core.app.NotificationCompat;
import com.hoho.android.usbserial.driver.UsbSerialDriver;
import com.hoho.android.usbserial.driver.UsbSerialPort;
import com.hoho.android.usbserial.driver.UsbSerialProber;
import java.io.IOException;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.ServerSocket;
import java.util.Enumeration;
import java.util.List;
public class UsbSerialTelnetService extends Service {
final static String TAG = "UsbSerialTelnet";
final static String ACTION_NEED_TO_START = "need_to_start";
final static String KEY_TCP_PORT = "tcp_port";
final static String KEY_BAUD_RATE = "baud_rate";
final static String KEY_DATA_BITS = "data_bits";
final static String KEY_STOP_BITS = "stop_bits";
final static String KEY_PARITY = "parity";
final static String KEY_NO_LOCAL_ECHO = "no_local_echo";
final static String KEY_REMOVE_LF = "remove_lf";
boolean mStarted = false;
//UsbSerialPort mSerialPort = null;
UsbSerialThread mUsbSerialThread = null;
TcpServerThread mTcpServerThread = null;
int mTcpPort = 2323;
public UsbSerialTelnetService() {
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
if (mStarted) {
// Already started
new Handler(Looper.getMainLooper()).post(() -> Toast.makeText(UsbSerialTelnetService.this.getApplicationContext(), getString(R.string.already_started), Toast.LENGTH_LONG).show());
return START_STICKY;
}
String message = getString(R.string.app_name) + " " + getString(R.string.started);
boolean success = false;
try {
// Find all available drivers from attached devices.
UsbManager manager = (UsbManager) getSystemService(Context.USB_SERVICE);
List<UsbSerialDriver> availableDrivers = UsbSerialProber.getDefaultProber().findAllDrivers(manager);
if (availableDrivers.isEmpty()) {
message = getString(R.string.device_not_found);
} else {
// Open a connection to the first available driver.
UsbSerialDriver driver = availableDrivers.get(0);
UsbDeviceConnection connection = manager.openDevice(driver.getDevice());
if (connection == null) {
message = null; // "Please grant permission and try again";
Intent mainActivityStartIntent = new Intent(this, MainActivity.class);
mainActivityStartIntent.setAction(ACTION_NEED_TO_START);
PendingIntent mainActivityStartPendingIntent = PendingIntent.getActivity(this, 0, mainActivityStartIntent, PendingIntent.FLAG_IMMUTABLE);
manager.requestPermission(driver.getDevice(), mainActivityStartPendingIntent);
} else {
UsbSerialPort serialPort = driver.getPorts().get(0); // Most devices have just one port (port 0)
serialPort.open(connection);
serialPort.setParameters(
intent.getIntExtra(KEY_BAUD_RATE, 115200),
intent.getIntExtra(KEY_DATA_BITS, 8),
intent.getIntExtra(KEY_STOP_BITS, UsbSerialPort.STOPBITS_1),
intent.getIntExtra(KEY_PARITY, UsbSerialPort.PARITY_NONE));
ServerSocket serverSocket = new ServerSocket(intent.getIntExtra(KEY_TCP_PORT,2323));
mUsbSerialThread = new UsbSerialThread(this, serialPort);
mTcpServerThread = new TcpServerThread(this, serverSocket);
mTcpServerThread.setNoLocalEcho(intent.getBooleanExtra(KEY_NO_LOCAL_ECHO, true));
mTcpServerThread.setRemoveLf(intent.getBooleanExtra(KEY_REMOVE_LF, true));
mUsbSerialThread.start();
mTcpServerThread.start();
success = true;
}
}
}
catch (Exception ex) {
message = getString(R.string.error) + " " + ex.getMessage();
ex.printStackTrace();
}
Intent mainActivityIntent = new Intent(this, MainActivity.class);
PendingIntent mainActivityPendingIntent = PendingIntent.getActivity(this, 0, mainActivityIntent, PendingIntent.FLAG_IMMUTABLE);
NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(TAG,
getString(R.string.app_name),
NotificationManager.IMPORTANCE_DEFAULT);
channel.setDescription(getString(R.string.app_name));
nm.createNotificationChannel(channel);
}
Notification notification = new NotificationCompat.Builder(this, TAG)
.setOngoing(true)
.setSmallIcon(R.drawable.ic_notification)
.setLargeIcon(BitmapFactory.decodeResource(this.getResources(), R.mipmap.ic_launcher))
.setContentTitle(message)
.setPriority(NotificationCompat.PRIORITY_DEFAULT)
.setCategory(Notification.CATEGORY_SERVICE)
.setShowWhen(false)
.setContentIntent(mainActivityPendingIntent)
.build();
if (message != null) {
final String msg = message;
new Handler(Looper.getMainLooper()).post(() -> Toast.makeText(UsbSerialTelnetService.this.getApplicationContext(), msg, Toast.LENGTH_SHORT).show());
}
startForeground(1, notification);
if (success) {
if (message != null)
Log.i(TAG, message);
mStarted = true;
} else {
if (message != null)
Log.e(TAG, message);
stopSelf();
mStarted = false;
}
return START_STICKY;
}
public static String getIPAddress() {
try {
Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
while (networkInterfaces.hasMoreElements()) {
NetworkInterface networkInterface = networkInterfaces.nextElement();
if (networkInterface.isUp()) {
String name = networkInterface.getName();
if (name.toLowerCase().equals("wlan0") || name.toLowerCase().equals("rmnet0")) {
List<InterfaceAddress> interfaceAddresses = networkInterface.getInterfaceAddresses();
for (InterfaceAddress interfaceAddress : interfaceAddresses) {
InetAddress address = interfaceAddress.getAddress();
if (address instanceof Inet4Address){
return address.getHostAddress();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return "localhost";
}
@Override
public void onDestroy()
{
NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
nm.cancel(1);
if (mTcpServerThread != null) {
mTcpServerThread.close();
mTcpServerThread = null;
}
if (mUsbSerialThread != null) {
mUsbSerialThread.close();
mUsbSerialThread = null;
}
if (mStarted)
new Handler(Looper.getMainLooper()).post(() -> Toast.makeText(UsbSerialTelnetService.this.getApplicationContext(),
getString(R.string.app_name) + " " + getString(R.string.stopped), Toast.LENGTH_SHORT).show());
Log.i(TAG, "Service stopped");
mStarted = false;
mBinder.stopped();
}
private final ServiceBinder mBinder = new ServiceBinder();
public class ServiceBinder extends Binder {
private IOnStopListener onStopListener = null;
public boolean isStarted()
{
return mStarted;
}
public void setOnStopListener(IOnStopListener listener) { onStopListener = listener; }
public void stopped() { if (onStopListener != null) onStopListener.usbSerialServiceStopped(); }
}
public interface IOnStopListener
{
public void usbSerialServiceStopped();
}
public void writeSerialPort(byte[] buffer) throws IOException {
if (mUsbSerialThread == null) return;
mUsbSerialThread.write(buffer);
}
public void writeSerialPort(byte[] buffer, int pos, int len) throws IOException {
if (mUsbSerialThread == null) return;
byte[] writeBuffer = new byte[len];
System.arraycopy(buffer, pos, writeBuffer, 0, len);
mUsbSerialThread.write(writeBuffer);
}
public void writeClients(byte[] buffer) throws IOException {
if (mTcpServerThread == null) return;
mTcpServerThread.write(buffer);
}
public void writeClients(byte[] buffer, int pos, int len) throws IOException {
if (mTcpServerThread == null) return;
mTcpServerThread.write(buffer, pos, len);
}
}
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