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/*
* Copyright (c) 2018 Livio, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Livio Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.smartdevicelink.transport;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.hardware.usb.UsbAccessory;
import android.hardware.usb.UsbManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Parcelable;
import com.smartdevicelink.util.AndroidTools;
import com.smartdevicelink.util.DebugTool;
import com.smartdevicelink.util.SdlAppInfo;
import com.smartdevicelink.util.ServiceFinder;
import java.util.List;
import java.util.Vector;
import static com.smartdevicelink.transport.TransportConstants.FOREGROUND_EXTRA;
/**
* The USBAccessoryAttachmentActivity is a proxy to listen for
* USB_ACCESSORY_ATTACHED intents.
* <br><br>
* Unfortunately, the USB_ACCESSORY_ATTACHED intent can only be sent to an
* activity. So this class is a workaround to get that intent.
* <br><br>
* Some reference: http://stackoverflow.com/questions/6981736/android-3-1-usb-host-broadcastreceiver-does-not-receive-usb-device-attached/9814826#9814826
* <br><br>
* Inspired by OpenXC-Android: https://github.com/openxc/openxc-android
* <br><br>
* <strong>NOTE:</strong> An application that wants to use USB transport
* must make the following changes to AndroidManifest.xml:
* <br><br>
* <b>1.</b> Add these lines to the {@literal <manifest>…</manifest>} scope:<br>
* <pre>{@code
* <!-- Required to use the USB Accessory mode -->
* <uses-feature android:name="android.hardware.usb.accessory"/>
* }</pre>
* <b>2.</b> Add these lines to the {@literal <application>…</application>} scope:
* <pre>{@code <activity android:name="com.smartdevicelink.transport.USBAccessoryAttachmentActivity">
* <intent-filter>
* <action android:name="android.hardware.usb.action.USB_ACCESSORY_ATTACHED"/>
* </intent-filter>
* <meta-data
* android:name="android.hardware.usb.action.USB_ACCESSORY_ATTACHED"
* android:resource="@xml/accessory_filter"/>
* </activity>
* }</pre>
*/
public class USBAccessoryAttachmentActivity extends Activity {
private static final String TAG = USBAccessoryAttachmentActivity.class.getSimpleName();
private static final int USB_SUPPORTED_ROUTER_SERVICE_VERSION = 8;
UsbAccessory usbAccessory;
Parcelable permissionGranted;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
protected void onResume() {
super.onResume();
checkUsbAccessoryIntent();
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
this.setIntent(intent);
}
private synchronized void checkUsbAccessoryIntent() {
if (usbAccessory != null) {
return;
}
final Intent intent = getIntent();
String action = intent.getAction();
DebugTool.logInfo(TAG, "Received intent with action: " + action);
if (UsbManager.ACTION_USB_ACCESSORY_ATTACHED.equals(action)) {
usbAccessory = intent.getParcelableExtra(UsbManager.EXTRA_ACCESSORY);
permissionGranted = intent.getParcelableExtra(UsbManager.EXTRA_PERMISSION_GRANTED);
wakeUpRouterService(getApplicationContext());
} else {
finish();
}
}
@Override
protected void onDestroy() {
usbAccessory = null;
permissionGranted = null;
super.onDestroy();
}
@SuppressWarnings("deprecation")
private void wakeUpRouterService(final Context context) {
new ServiceFinder(context, context.getPackageName(), new ServiceFinder.ServiceFinderCallback() {
@Override
public void onComplete(Vector<ComponentName> routerServices) {
Vector<ComponentName> runningBluetoothServicePackage = new Vector<>(routerServices);
if (runningBluetoothServicePackage.isEmpty()) {
//If there isn't a service running we should try to start one
//We will try to sort the SDL enabled apps and find the one that's been installed the longest
Intent serviceIntent;
List<SdlAppInfo> sdlAppInfoList = AndroidTools.querySdlAppInfo(context, new SdlAppInfo.BestRouterComparator(), null);
if (sdlAppInfoList != null && !sdlAppInfoList.isEmpty()) {
SdlAppInfo optimalRouterService = sdlAppInfoList.get(0);
if (optimalRouterService.getRouterServiceVersion() < USB_SUPPORTED_ROUTER_SERVICE_VERSION) {
// The most optimal router service doesn't support the USB connection
// At this point to ensure that USB connection is still possible it might be
// worth trying to use the legacy USB transport scheme
attemptLegacyUsbConnection(usbAccessory);
return;
}
serviceIntent = new Intent();
serviceIntent.setComponent(optimalRouterService.getRouterServiceComponentName());
} else {
DebugTool.logInfo(TAG, "No SDL Router Services found");
DebugTool.logInfo(TAG, "WARNING: This application has not specified its SdlRouterService correctly in the manifest. THIS WILL THROW AN EXCEPTION IN FUTURE RELEASES!!");
// At this point to ensure that USB connection is still possible it might be
// worth trying to use the legacy USB transport scheme
attemptLegacyUsbConnection(usbAccessory);
return;
}
serviceIntent.setAction(TransportConstants.BIND_REQUEST_TYPE_ALT_TRANSPORT);
serviceIntent.putExtra(TransportConstants.CONNECTION_TYPE_EXTRA, TransportConstants.AOA_USB);
ComponentName startedService;
try {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
startedService = context.startService(serviceIntent);
} else {
serviceIntent.putExtra(FOREGROUND_EXTRA, true);
startedService = context.startForegroundService(serviceIntent);
}
if (startedService == null) {
// A router service was not started or is not running.
DebugTool.logError(TAG, " - Error starting router service. Attempting legacy connection ");
attemptLegacyUsbConnection(usbAccessory);
return;
}
//Make sure to send this out for old apps to close down
SdlRouterService.LocalRouterService self = SdlRouterService.getLocalRouterService(serviceIntent, serviceIntent.getComponent());
Intent restart = new Intent(SdlRouterService.REGISTER_NEWER_SERVER_INSTANCE_ACTION);
restart.putExtra(SdlBroadcastReceiver.LOCAL_ROUTER_SERVICE_EXTRA, self);
restart.putExtra(SdlBroadcastReceiver.LOCAL_ROUTER_SERVICE_DID_START_OWN, true);
context.sendBroadcast(restart);
if (usbAccessory != null) {
new UsbTransferProvider(context, serviceIntent.getComponent(), usbAccessory, new UsbTransferProvider.UsbTransferCallback() {
@Override
public void onUsbTransferUpdate(boolean success) {
finish();
}
});
}
} catch (SecurityException e) {
DebugTool.logError(TAG, "Security exception, process is bad");
}
} else {
if (usbAccessory != null) {
new UsbTransferProvider(context, runningBluetoothServicePackage.get(0), usbAccessory, new UsbTransferProvider.UsbTransferCallback() {
@Override
public void onUsbTransferUpdate(boolean success) {
finish();
}
});
}
}
}
});
}
private void attemptLegacyUsbConnection(UsbAccessory usbAccessory) {
if (usbAccessory != null) {
DebugTool.logInfo(TAG, "Attempting to send USB connection intent using legacy method");
Intent usbAccessoryAttachedIntent = new Intent(TransportConstants.ACTION_USB_ACCESSORY_ATTACHED);
usbAccessoryAttachedIntent.putExtra(UsbManager.EXTRA_ACCESSORY, usbAccessory);
usbAccessoryAttachedIntent.putExtra(UsbManager.EXTRA_PERMISSION_GRANTED, permissionGranted);
AndroidTools.sendExplicitBroadcast(getApplicationContext(), usbAccessoryAttachedIntent, null);
} else {
DebugTool.logError(TAG, "Unable to start legacy USB mode as the accessory was null");
}
finish();
}
}
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