Helper.java

// (c) 2104 Don Coleman
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.megster.cordova.ble.central;

import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattDescriptor;
import org.json.JSONArray;

public class Helper {

    public static JSONArray decodeProperties(BluetoothGattCharacteristic characteristic) {

        // NOTE: props strings need to be consistent across iOS and Android
        JSONArray props = new JSONArray();
        int properties = characteristic.getProperties();

        if ((properties & BluetoothGattCharacteristic.PROPERTY_BROADCAST) != 0x0 ) {
            props.put("Broadcast");
        }

        if ((properties & BluetoothGattCharacteristic.PROPERTY_READ) != 0x0 ) {
            props.put("Read");
        }

        if ((properties & BluetoothGattCharacteristic.PROPERTY_WRITE_NO_RESPONSE) != 0x0 ) {
            props.put("WriteWithoutResponse");
        }

        if ((properties & BluetoothGattCharacteristic.PROPERTY_WRITE) != 0x0 ) {
            props.put("Write");
        }

        if ((properties & BluetoothGattCharacteristic.PROPERTY_NOTIFY) != 0x0 ) {
            props.put("Notify");
        }

        if ((properties & BluetoothGattCharacteristic.PROPERTY_INDICATE) != 0x0 ) {
            props.put("Indicate");
        }

        if ((properties & BluetoothGattCharacteristic.PROPERTY_SIGNED_WRITE) != 0x0 ) {
            // Android calls this "write with signature", using iOS name for now
            props.put("AuthenticateSignedWrites");
        }

        if ((properties & BluetoothGattCharacteristic.PROPERTY_EXTENDED_PROPS) != 0x0 ) {
            props.put("ExtendedProperties");
        }

//      iOS only?
//
//            if ((p & CBCharacteristicPropertyNotifyEncryptionRequired) != 0x0) {  // 0x100
//                [props addObject:@"NotifyEncryptionRequired"];
//            }
//
//            if ((p & CBCharacteristicPropertyIndicateEncryptionRequired) != 0x0) { // 0x200
//                [props addObject:@"IndicateEncryptionRequired"];
//            }

        return props;
    }

    public static JSONArray decodePermissions(BluetoothGattCharacteristic characteristic) {

        // NOTE: props strings need to be consistent across iOS and Android
        JSONArray props = new JSONArray();
        int permissions = characteristic.getPermissions();

        if ((permissions & BluetoothGattCharacteristic.PERMISSION_READ) != 0x0 ) {
            props.put("Read");
        }

        if ((permissions & BluetoothGattCharacteristic.PERMISSION_WRITE) != 0x0 ) {
            props.put("Write");
        }

        if ((permissions & BluetoothGattCharacteristic.PERMISSION_READ_ENCRYPTED) != 0x0 ) {
            props.put("ReadEncrypted");
        }

        if ((permissions & BluetoothGattCharacteristic.PERMISSION_WRITE_ENCRYPTED) != 0x0 ) {
            props.put("WriteEncrypted");
        }

        if ((permissions & BluetoothGattCharacteristic.PERMISSION_READ_ENCRYPTED_MITM) != 0x0 ) {
            props.put("ReadEncryptedMITM");
        }

        if ((permissions & BluetoothGattCharacteristic.PERMISSION_WRITE_ENCRYPTED_MITM) != 0x0 ) {
            props.put("WriteEncryptedMITM");
        }

        if ((permissions & BluetoothGattCharacteristic.PERMISSION_WRITE_SIGNED) != 0x0 ) {
            props.put("WriteSigned");
        }

        if ((permissions & BluetoothGattCharacteristic.PERMISSION_WRITE_SIGNED_MITM) != 0x0 ) {
            props.put("WriteSignedMITM");
        }

        return props;
    }

    public static JSONArray decodePermissions(BluetoothGattDescriptor descriptor) {

        // NOTE: props strings need to be consistent across iOS and Android
        JSONArray props = new JSONArray();
        int permissions = descriptor.getPermissions();

        if ((permissions & BluetoothGattDescriptor.PERMISSION_READ) != 0x0 ) {
            props.put("Read");
        }

        if ((permissions & BluetoothGattDescriptor.PERMISSION_WRITE) != 0x0 ) {
            props.put("Write");
        }

        if ((permissions & BluetoothGattDescriptor.PERMISSION_READ_ENCRYPTED) != 0x0 ) {
            props.put("ReadEncrypted");
        }

        if ((permissions & BluetoothGattDescriptor.PERMISSION_WRITE_ENCRYPTED) != 0x0 ) {
            props.put("WriteEncrypted");
        }

        if ((permissions & BluetoothGattDescriptor.PERMISSION_READ_ENCRYPTED_MITM) != 0x0 ) {
            props.put("ReadEncryptedMITM");
        }

        if ((permissions & BluetoothGattDescriptor.PERMISSION_WRITE_ENCRYPTED_MITM) != 0x0 ) {
            props.put("WriteEncryptedMITM");
        }

        if ((permissions & BluetoothGattDescriptor.PERMISSION_WRITE_SIGNED) != 0x0 ) {
            props.put("WriteSigned");
        }

        if ((permissions & BluetoothGattDescriptor.PERMISSION_WRITE_SIGNED_MITM) != 0x0 ) {
            props.put("WriteSignedMITM");
        }

        return props;
    }

}