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Gadgetbridge/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/soflow/SoFlowSupport.java
2023-02-21 16:09:23 +01:00

381 lines
13 KiB
Java

/* Copyright (C) 2022 Andreas Shimokawa
This file is part of Gadgetbridge.
Gadgetbridge is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Gadgetbridge is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
package nodomain.freeyourgadget.gadgetbridge.service.devices.soflow;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCharacteristic;
import android.content.SharedPreferences;
import android.net.Uri;
import android.widget.Toast;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.ArrayList;
import java.util.UUID;
import nodomain.freeyourgadget.gadgetbridge.GBApplication;
import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventVersionInfo;
import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
import nodomain.freeyourgadget.gadgetbridge.model.Alarm;
import nodomain.freeyourgadget.gadgetbridge.model.CalendarEventSpec;
import nodomain.freeyourgadget.gadgetbridge.model.CallSpec;
import nodomain.freeyourgadget.gadgetbridge.model.CannedMessagesSpec;
import nodomain.freeyourgadget.gadgetbridge.model.MusicSpec;
import nodomain.freeyourgadget.gadgetbridge.model.MusicStateSpec;
import nodomain.freeyourgadget.gadgetbridge.model.NotificationSpec;
import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec;
import nodomain.freeyourgadget.gadgetbridge.service.btle.AbstractBTLEDeviceSupport;
import nodomain.freeyourgadget.gadgetbridge.service.btle.GattService;
import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetDeviceStateAction;
import nodomain.freeyourgadget.gadgetbridge.service.btle.profiles.IntentListener;
import nodomain.freeyourgadget.gadgetbridge.service.btle.profiles.deviceinfo.DeviceInfoProfile;
import nodomain.freeyourgadget.gadgetbridge.util.CryptoUtils;
import nodomain.freeyourgadget.gadgetbridge.util.GB;
public class SoFlowSupport extends AbstractBTLEDeviceSupport {
public static final UUID UUID_CHARACTERISICS_NOTIFICATION = UUID.fromString("60000002-0000-1000-8000-00805f9b34fb");
public static final UUID UUID_CHARACTERISICS_WRITE = UUID.fromString("60000003-0000-1000-8000-00805f9b34fb");
public static final byte[] COMMAND_REQUEST_SESSION = new byte[]{0x06, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
public static final byte[] COMMAND_REQUEST_LOCK = new byte[]{0x05, 0x0e, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
public static final byte[] COMMAND_LOCK = new byte[]{0x05, 0x0c, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
public static final byte[] COMMAND_UNLOCK = new byte[]{0x05, 0x01, 0x06, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
public static final byte[] COMMAND_SET_LIGHT = new byte[]{0x05, 0x47, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
private static final Logger LOG = LoggerFactory.getLogger(SoFlowSupport.class);
private final DeviceInfoProfile<SoFlowSupport> deviceInfoProfile;
private final GBDeviceEventVersionInfo versionCmd = new GBDeviceEventVersionInfo();
private byte[] aesKey;
private final byte[] session = new byte[]{0, 0, 0, 0};
public SoFlowSupport() {
super(LOG);
addSupportedService(GattService.UUID_SERVICE_GENERIC_ACCESS);
addSupportedService(GattService.UUID_SERVICE_GENERIC_ATTRIBUTE);
addSupportedService(GattService.UUID_SERVICE_DEVICE_INFORMATION);
addSupportedService(GattService.UUID_SERVICE_BATTERY_SERVICE);
addSupportedService(UUID.fromString("60000001-0000-1000-8000-00805f9b34fb"));
deviceInfoProfile = new DeviceInfoProfile<>(this);
IntentListener mListener = intent -> {
String s = intent.getAction();
if (DeviceInfoProfile.ACTION_DEVICE_INFO.equals(s)) {
handleDeviceInfo(intent.getParcelableExtra(DeviceInfoProfile.EXTRA_DEVICE_INFO));
}
};
deviceInfoProfile.addListener(mListener);
addSupportedProfile(deviceInfoProfile);
}
@Override
protected TransactionBuilder initializeDevice(TransactionBuilder builder) {
aesKey = getSecretKey();
builder.add(new SetDeviceStateAction(getDevice(), GBDevice.State.INITIALIZING, getContext()));
requestDeviceInfo(builder);
builder.notify(getCharacteristic(UUID_CHARACTERISICS_NOTIFICATION), true);
writeEncrypted(builder, COMMAND_REQUEST_SESSION);
setInitialized(builder);
return builder;
}
private void requestDeviceInfo(TransactionBuilder builder) {
LOG.debug("Requesting Device Info!");
deviceInfoProfile.requestDeviceInfo(builder);
}
private void setInitialized(TransactionBuilder builder) {
builder.add(new SetDeviceStateAction(getDevice(), GBDevice.State.INITIALIZED, getContext()));
}
private void writeEncrypted(TransactionBuilder builder, byte[] data) {
try {
LOG.debug("will encrypt " + GB.hexdump(data));
builder.write(getCharacteristic(UUID_CHARACTERISICS_WRITE), CryptoUtils.encryptAES(data, aesKey));
} catch (Exception e) {
LOG.error("error while encrypting data");
}
}
@Override
public boolean useAutoConnect() {
return false;
}
private void handleDeviceInfo(nodomain.freeyourgadget.gadgetbridge.service.btle.profiles.deviceinfo.DeviceInfo info) {
LOG.warn("Device info: " + info);
versionCmd.hwVersion = info.getHardwareRevision();
versionCmd.fwVersion = info.getFirmwareRevision();
handleGBDeviceEvent(versionCmd);
}
protected byte[] getSecretKey() {
byte[] authKeyBytes;
SharedPreferences sharedPrefs = GBApplication.getDeviceSpecificSharedPrefs(getDevice().getAddress());
String authKey = sharedPrefs.getString("authkey", null);
if (authKey != null && !authKey.isEmpty()) {
authKey = authKey.trim();
if (authKey.length() == 34 && authKey.startsWith("0x")) {
authKeyBytes = GB.hexStringToByteArray(authKey.substring(2));
} else if (authKey.length() == 32) {
authKeyBytes = GB.hexStringToByteArray(authKey);
} else {
return null;
}
return authKeyBytes;
}
return null;
}
@Override
public boolean onCharacteristicChanged(BluetoothGatt gatt,
BluetoothGattCharacteristic characteristic) {
if (super.onCharacteristicChanged(gatt, characteristic)) {
return true;
}
UUID characteristicUUID = characteristic.getUuid();
if (UUID_CHARACTERISICS_NOTIFICATION.equals(characteristicUUID)) {
try {
byte[] data = CryptoUtils.decryptAES(characteristic.getValue(), aesKey);
if (data[0] == 0x06 && data[1] == 0x01 && data[2] == 0x07) {
session[0] = data[3];
session[1] = data[4];
session[2] = data[5];
session[3] = data[6];
LOG.info("Got session");
COMMAND_LOCK[4] = session[0];
COMMAND_LOCK[5] = session[1];
COMMAND_LOCK[6] = session[2];
COMMAND_LOCK[7] = session[3];
COMMAND_REQUEST_LOCK[4] = session[0];
COMMAND_REQUEST_LOCK[5] = session[1];
COMMAND_REQUEST_LOCK[6] = session[2];
COMMAND_REQUEST_LOCK[7] = session[3];
COMMAND_SET_LIGHT[4] = session[0];
COMMAND_SET_LIGHT[5] = session[1];
COMMAND_SET_LIGHT[6] = session[2];
COMMAND_SET_LIGHT[7] = session[3];
COMMAND_UNLOCK[9] = session[0];
COMMAND_UNLOCK[10] = session[1];
COMMAND_UNLOCK[11] = session[2];
COMMAND_UNLOCK[12] = session[3];
}
else {
GB.toast(GB.hexdump(data),5,1);
}
} catch (Exception e) {
LOG.error("error while decrypting");
}
return true;
}
LOG.info("Unhandled characteristic changed: " + characteristicUUID);
return false;
}
@Override
public void onSendConfiguration(String config) {
TransactionBuilder builder;
try {
builder = performInitialized("Sending configuration for option: " + config);
if ("lock".equals(config)) {
SharedPreferences sharedPrefs = GBApplication.getDeviceSpecificSharedPrefs(getDevice().getAddress());
boolean lock = sharedPrefs.getBoolean("lock", false);
if (lock) {
writeEncrypted(builder, COMMAND_LOCK);
} else {
writeEncrypted(builder, COMMAND_UNLOCK);
}
}
builder.queue(getQueue());
} catch (IOException e) {
GB.toast("Error setting configuration", Toast.LENGTH_LONG, GB.ERROR, e);
}
}
@Override
public void onNotification(NotificationSpec notificationSpec) {
}
@Override
public void onDeleteNotification(int id) {
}
@Override
public void onSetTime() {
}
@Override
public void onSetAlarms(ArrayList<? extends Alarm> alarms) {
}
@Override
public void onSetCallState(CallSpec callSpec) {
}
@Override
public void onSetCannedMessages(CannedMessagesSpec cannedMessagesSpec) {
}
@Override
public void onSetMusicState(MusicStateSpec stateSpec) {
}
@Override
public void onSetMusicInfo(MusicSpec musicSpec) {
}
@Override
public void onEnableRealtimeSteps(boolean enable) {
}
@Override
public void onInstallApp(Uri uri) {
}
@Override
public void onAppInfoReq() {
}
@Override
public void onAppStart(UUID uuid, boolean start) {
}
@Override
public void onAppDelete(UUID uuid) {
}
@Override
public void onAppConfiguration(UUID appUuid, String config, Integer id) {
}
@Override
public void onAppReorder(UUID[] uuids) {
}
@Override
public void onFetchRecordedData(int dataTypes) {
}
@Override
public void onReset(int flags) {
}
@Override
public void onHeartRateTest() {
}
@Override
public void onEnableRealtimeHeartRateMeasurement(boolean enable) {
}
@Override
public void onFindDevice(boolean start) {
}
@Override
public void onSetConstantVibration(int integer) {
}
@Override
public void onScreenshotReq() {
}
@Override
public void onEnableHeartRateSleepSupport(boolean enable) {
}
@Override
public void onSetHeartRateMeasurementInterval(int seconds) {
}
@Override
public void onAddCalendarEvent(CalendarEventSpec calendarEventSpec) {
}
@Override
public void onDeleteCalendarEvent(byte type, long id) {
}
@Override
public boolean onCharacteristicRead(BluetoothGatt gatt,
BluetoothGattCharacteristic characteristic, int status) {
if (super.onCharacteristicRead(gatt, characteristic, status)) {
return true;
}
UUID characteristicUUID = characteristic.getUuid();
LOG.info("Unhandled characteristic read: " + characteristicUUID);
return false;
}
@Override
public void onReadConfiguration(String config) {
}
@Override
public void onTestNewFunction() {
TransactionBuilder builder;
try {
builder = performInitialized("request unknown");
writeEncrypted(builder,COMMAND_REQUEST_LOCK);
builder.queue(getQueue());
} catch (IOException e) {
GB.toast("Error setting configuration", Toast.LENGTH_LONG, GB.ERROR, e);
}
}
@Override
public void onSendWeather(WeatherSpec weatherSpec) {
}
}