1 /* 2 * Copyright (C) 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.nearby.fastpair.provider.bluetooth; 18 19 import android.annotation.TargetApi; 20 import android.bluetooth.BluetoothGatt; 21 import android.bluetooth.BluetoothGattCharacteristic; 22 import android.bluetooth.BluetoothGattDescriptor; 23 import android.nearby.fastpair.provider.bluetooth.BluetoothGattServerConnection.Notifier; 24 25 import com.android.server.nearby.common.bluetooth.BluetoothGattException; 26 27 /** Servlet to handle GATT operations on a characteristic. */ 28 @TargetApi(18) 29 public abstract class BluetoothGattServlet { read(BluetoothGattServerConnection connection, @SuppressWarnings("unused") int offset)30 public byte[] read(BluetoothGattServerConnection connection, 31 @SuppressWarnings("unused") int offset) throws BluetoothGattException { 32 throw new BluetoothGattException("Read not supported.", 33 BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED); 34 } 35 write(BluetoothGattServerConnection connection, @SuppressWarnings("unused") int offset, @SuppressWarnings("unused") byte[] value)36 public void write(BluetoothGattServerConnection connection, 37 @SuppressWarnings("unused") int offset, @SuppressWarnings("unused") byte[] value) 38 throws BluetoothGattException { 39 throw new BluetoothGattException("Write not supported.", 40 BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED); 41 } 42 readDescriptor(BluetoothGattServerConnection connection, BluetoothGattDescriptor descriptor, @SuppressWarnings("unused") int offset)43 public byte[] readDescriptor(BluetoothGattServerConnection connection, 44 BluetoothGattDescriptor descriptor, @SuppressWarnings("unused") int offset) 45 throws BluetoothGattException { 46 throw new BluetoothGattException("Read not supported.", 47 BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED); 48 } 49 writeDescriptor(BluetoothGattServerConnection connection, BluetoothGattDescriptor descriptor, @SuppressWarnings("unused") int offset, @SuppressWarnings("unused") byte[] value)50 public void writeDescriptor(BluetoothGattServerConnection connection, 51 BluetoothGattDescriptor descriptor, 52 @SuppressWarnings("unused") int offset, @SuppressWarnings("unused") byte[] value) 53 throws BluetoothGattException { 54 throw new BluetoothGattException("Write not supported.", 55 BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED); 56 } 57 enableNotification(BluetoothGattServerConnection connection, Notifier notifier)58 public void enableNotification(BluetoothGattServerConnection connection, Notifier notifier) 59 throws BluetoothGattException { 60 throw new BluetoothGattException("Notification not supported.", 61 BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED); 62 } 63 disableNotification(BluetoothGattServerConnection connection, Notifier notifier)64 public void disableNotification(BluetoothGattServerConnection connection, Notifier notifier) 65 throws BluetoothGattException { 66 throw new BluetoothGattException("Notification not supported.", 67 BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED); 68 } 69 getCharacteristic()70 public abstract BluetoothGattCharacteristic getCharacteristic(); 71 } 72