mirror of
https://codeberg.org/Freeyourgadget/Gadgetbridge
synced 2024-08-27 09:41:16 +02:00
226 lines
9.5 KiB
Java
226 lines
9.5 KiB
Java
/* Copyright (C) 2022-2024 Arjan Schrijver, Damien Gaignon, Petr Vaněk
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This file is part of Gadgetbridge.
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Gadgetbridge is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Gadgetbridge is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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package nodomain.freeyourgadget.gadgetbridge.service.devices.supercars;
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import android.bluetooth.BluetoothGatt;
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import android.bluetooth.BluetoothGattCharacteristic;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.net.Uri;
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import androidx.localbroadcastmanager.content.LocalBroadcastManager;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.ArrayList;
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import java.util.UUID;
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import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventBatteryInfo;
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import nodomain.freeyourgadget.gadgetbridge.devices.supercars.SuperCarsConstants;
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import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
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import nodomain.freeyourgadget.gadgetbridge.model.Alarm;
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import nodomain.freeyourgadget.gadgetbridge.model.BatteryState;
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import nodomain.freeyourgadget.gadgetbridge.model.CalendarEventSpec;
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import nodomain.freeyourgadget.gadgetbridge.model.CallSpec;
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import nodomain.freeyourgadget.gadgetbridge.model.CannedMessagesSpec;
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import nodomain.freeyourgadget.gadgetbridge.model.MusicSpec;
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import nodomain.freeyourgadget.gadgetbridge.model.MusicStateSpec;
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import nodomain.freeyourgadget.gadgetbridge.model.NotificationSpec;
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import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.AbstractBTLEDeviceSupport;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetDeviceStateAction;
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import nodomain.freeyourgadget.gadgetbridge.util.CryptoUtils;
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public class SuperCarsSupport extends AbstractBTLEDeviceSupport {
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private static final Logger LOG = LoggerFactory.getLogger(SuperCarsSupport.class);
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public static final String COMMAND_DRIVE_CONTROL = "nodomain.freeyourgadget.gadgetbridge.supercars.command.DRIVE_CONTROL";
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public static final String EXTRA_DIRECTION = "EXTRA_DIRECTION";
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public static final String EXTRA_MOVEMENT = "EXTRA_MOVEMENT";
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public static final String EXTRA_SPEED = "EXTRA_SPEED";
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public static final String EXTRA_LIGHT = "EXTRA_LIGHT";
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public SuperCarsSupport() {
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super(LOG);
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addSupportedService(SuperCarsConstants.SERVICE_UUID_FFF);
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}
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@Override
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protected TransactionBuilder initializeDevice(TransactionBuilder builder) {
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builder.add(new SetDeviceStateAction(getDevice(), GBDevice.State.INITIALIZING, getContext()));
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builder.notify(getCharacteristic(SuperCarsConstants.CHARACTERISTIC_UUID_FFF4), true); //for battery
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builder.setCallback(this);
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LocalBroadcastManager broadcastManager = LocalBroadcastManager.getInstance(getContext());
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IntentFilter filter = new IntentFilter();
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filter.addAction(COMMAND_DRIVE_CONTROL);
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broadcastManager.registerReceiver(commandReceiver, filter);
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getDevice().setFirmwareVersion("N/A");
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getDevice().setFirmwareVersion2("N/A");
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builder.add(new SetDeviceStateAction(getDevice(), GBDevice.State.INITIALIZED, getContext()));
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LOG.debug("Connected to: " + gbDevice.getName());
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return builder;
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}
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BroadcastReceiver commandReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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if (intent.getAction().equals(COMMAND_DRIVE_CONTROL)) {
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queueDataToBLE(
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(SuperCarsConstants.Speed) intent.getSerializableExtra(EXTRA_SPEED),
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(SuperCarsConstants.Movement) intent.getSerializableExtra(EXTRA_MOVEMENT),
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(SuperCarsConstants.Light) intent.getSerializableExtra(EXTRA_LIGHT),
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(SuperCarsConstants.Direction) intent.getSerializableExtra(EXTRA_DIRECTION)
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);
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}
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}
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};
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@Override
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public boolean onCharacteristicChanged(BluetoothGatt gatt,
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BluetoothGattCharacteristic characteristic) {
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if (super.onCharacteristicChanged(gatt, characteristic)) {
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return true;
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}
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UUID characteristicUUID = characteristic.getUuid();
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byte[] byte_data = characteristic.getValue();
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LOG.debug("got characteristics: " + characteristicUUID);
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/*
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//keep here for now. This requires descriptor reading
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if (getDevice().getFirmwareVersion() == "N/A") {
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// this is probably not the best way to retrieve UUID descriptor
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// but i have not found a better way at this moment
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BluetoothGattCharacteristic characteristic1 = getCharacteristic(SuperCarsConstants.CHARACTERISTIC_UUID_FFF1);
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BluetoothGattDescriptor descriptor1 = characteristic1.getDescriptor(GattDescriptor.UUID_DESCRIPTOR_GATT_CHARACTERISTIC_USER_DESCRIPTION);
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gatt.readDescriptor(descriptor1);
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getDevice().setFirmwareVersion(new String(descriptor1.getValue()));
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getDevice().sendDeviceUpdateIntent(getContext());
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} else if (getDevice().getFirmwareVersion2() == "N/A") {
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BluetoothGattCharacteristic characteristic2 = getCharacteristic(SuperCarsConstants.CHARACTERISTIC_UUID_FFF2);
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BluetoothGattDescriptor descriptor2 = characteristic2.getDescriptor(GattDescriptor.UUID_DESCRIPTOR_GATT_CHARACTERISTIC_USER_DESCRIPTION);
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gatt.readDescriptor(descriptor2);
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//getDevice().setFirmwareVersion2(new String(descriptor2.getValue()));
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//getDevice().sendDeviceUpdateIntent(getContext());
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}
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*/
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if (SuperCarsConstants.CHARACTERISTIC_UUID_FFF4.equals(characteristicUUID)) {
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byte[] decoded_data = decryptData(byte_data);
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if (decoded_data.length == 16) {
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GBDeviceEventBatteryInfo batteryEvent = new GBDeviceEventBatteryInfo();
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batteryEvent.state = BatteryState.BATTERY_NORMAL;
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int level = decoded_data[4];
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batteryEvent.level = level;
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evaluateGBDeviceEvent(batteryEvent);
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}
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}
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return true;
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}
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private byte[] decryptData(byte[] data) {
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byte[] decodedResult = new byte[0];
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try {
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decodedResult = CryptoUtils.decryptAES(data, SuperCarsConstants.aes_key);
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} catch (Exception e) {
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LOG.error("Error while decoding received data: " + e);
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}
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return decodedResult;
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}
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private byte[] encryptData(byte[] data) {
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byte[] encodedResult = new byte[0];
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try {
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encodedResult = CryptoUtils.encryptAES(data, SuperCarsConstants.aes_key);
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} catch (Exception e) {
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LOG.error("Error while encoding data to be sent: " + e);
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}
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return encodedResult;
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}
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@Override
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public boolean useAutoConnect() {
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return false;
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}
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private void queueDataToBLE(SuperCarsConstants.Speed speed,
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SuperCarsConstants.Movement movement,
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SuperCarsConstants.Light light,
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SuperCarsConstants.Direction direction) {
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byte[] command = craft_packet(speed, direction, movement, light);
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TransactionBuilder builder = new TransactionBuilder("send data");
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BluetoothGattCharacteristic writeCharacteristic = getCharacteristic(SuperCarsConstants.CHARACTERISTIC_UUID_FFF1);
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builder.write(writeCharacteristic, encryptData(command));
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builder.queue(getQueue());
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}
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private byte[] craft_packet(SuperCarsConstants.Speed speed,
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SuperCarsConstants.Direction direction,
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SuperCarsConstants.Movement movement,
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SuperCarsConstants.Light light) {
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byte[] packet = new byte[]{0x0, 0x43, 0x54, 0x4c, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0};
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switch (movement) {
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case UP:
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packet[4] = 0x1;
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break;
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case DOWN:
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packet[5] = 0x1;
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break;
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}
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switch (direction) {
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case LEFT:
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packet[6] = 0x1;
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break;
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case RIGHT:
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packet[7] = 0x1;
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break;
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}
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switch (light) {
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case ON:
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packet[8] = 0x0;
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break;
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case OFF:
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packet[8] = 0x1;
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break;
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}
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switch (speed) {
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case NORMAL:
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packet[9] = 0x50;
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break;
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case TURBO:
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packet[9] = 0x64;
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break;
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}
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return packet;
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}
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@Override
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public void dispose() {
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super.dispose();
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LocalBroadcastManager.getInstance(getContext()).unregisterReceiver(commandReceiver);
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}
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}
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