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/*
*
* Copyright (c) 2020 Project CHIP Authors
* Copyright (c) 2015-2017 Nest Labs, Inc.
*
* 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.
*/
/**
* @file
* Provides an implementation of BlePlatformDelegate for Darwin platforms.
*/
#if !__has_feature(objc_arc)
#error This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
#endif
#include <ble/Ble.h>
#include <lib/support/logging/CHIPLogging.h>
#include <platform/Darwin/BlePlatformDelegate.h>
#import "UUIDHelper.h"
using namespace ::chip;
using namespace ::chip::Ble;
using ::chip::System::PacketBufferHandle;
namespace chip {
namespace DeviceLayer {
namespace Internal {
bool BlePlatformDelegateImpl::SubscribeCharacteristic(
BLE_CONNECTION_OBJECT connObj, const ChipBleUUID * svcId, const ChipBleUUID * charId)
{
bool found = false;
if (nullptr == svcId || nullptr == charId) {
return found;
}
CBUUID * serviceId = [UUIDHelper GetShortestServiceUUID:svcId];
CBUUID * characteristicId = [CBUUID UUIDWithData:[NSData dataWithBytes:charId->bytes length:sizeof(charId->bytes)]];
CBPeripheral * peripheral = (__bridge CBPeripheral *) connObj;
for (CBService * service in peripheral.services) {
if ([service.UUID.data isEqualToData:serviceId.data]) {
for (CBCharacteristic * characteristic in service.characteristics) {
if ([characteristic.UUID.data isEqualToData:characteristicId.data]) {
found = true;
[peripheral setNotifyValue:true forCharacteristic:characteristic];
break;
}
}
}
}
return found;
}
bool BlePlatformDelegateImpl::UnsubscribeCharacteristic(
BLE_CONNECTION_OBJECT connObj, const ChipBleUUID * svcId, const ChipBleUUID * charId)
{
bool found = false;
if (nullptr == svcId || nullptr == charId) {
return found;
}
CBUUID * serviceId = [UUIDHelper GetShortestServiceUUID:svcId];
CBUUID * characteristicId = characteristicId = [CBUUID UUIDWithData:[NSData dataWithBytes:charId->bytes
length:sizeof(charId->bytes)]];
CBPeripheral * peripheral = (__bridge CBPeripheral *) connObj;
for (CBService * service in peripheral.services) {
if ([service.UUID.data isEqualToData:serviceId.data]) {
for (CBCharacteristic * characteristic in service.characteristics) {
if ([characteristic.UUID.data isEqualToData:characteristicId.data]) {
found = true;
[peripheral setNotifyValue:false forCharacteristic:characteristic];
break;
}
}
}
}
return found;
}
bool BlePlatformDelegateImpl::CloseConnection(BLE_CONNECTION_OBJECT connObj)
{
CBPeripheral * peripheral = (__bridge CBPeripheral *) connObj;
// CoreBluetooth API requires a CBCentralManager to close a connection which is a property of the peripheral.
CBCentralManager * manager = (CBCentralManager *) [peripheral valueForKey:@"manager"];
if (manager != nil)
[manager cancelPeripheralConnection:peripheral];
return true;
}
uint16_t BlePlatformDelegateImpl::GetMTU(BLE_CONNECTION_OBJECT connObj) const
{
CBPeripheral * peripheral = (__bridge CBPeripheral *) connObj;
// The negotiated mtu length is a property of the peripheral.
uint16_t mtuLength = [[peripheral valueForKey:@"mtuLength"] unsignedShortValue];
ChipLogProgress(Ble, "ATT MTU = %u", mtuLength);
return mtuLength;
}
bool BlePlatformDelegateImpl::SendIndication(
BLE_CONNECTION_OBJECT connObj, const ChipBleUUID * svcId, const ChipBleUUID * charId, PacketBufferHandle pBuf)
{
return false;
}
bool BlePlatformDelegateImpl::SendWriteRequest(
BLE_CONNECTION_OBJECT connObj, const ChipBleUUID * svcId, const ChipBleUUID * charId, PacketBufferHandle pBuf)
{
bool found = false;
if (nullptr == svcId || nullptr == charId || pBuf.IsNull()) {
return found;
}
CBUUID * serviceId = [UUIDHelper GetShortestServiceUUID:svcId];
CBUUID * characteristicId = [CBUUID UUIDWithData:[NSData dataWithBytes:charId->bytes length:sizeof(charId->bytes)]];
NSData * data = [NSData dataWithBytes:pBuf->Start() length:pBuf->DataLength()];
CBPeripheral * peripheral = (__bridge CBPeripheral *) connObj;
for (CBService * service in peripheral.services) {
if ([service.UUID.data isEqualToData:serviceId.data]) {
for (CBCharacteristic * characteristic in service.characteristics) {
if ([characteristic.UUID.data isEqualToData:characteristicId.data]) {
found = true;
[peripheral writeValue:data forCharacteristic:characteristic type:CBCharacteristicWriteWithResponse];
break;
}
}
}
}
// Going out of scope releases delegate's reference to pBuf. pBuf will be freed when both platform delegate and Chip
// stack free their references to it. We release pBuf's reference here since its payload bytes were copied into a new
// NSData object
return found;
}
bool BlePlatformDelegateImpl::SendReadRequest(
BLE_CONNECTION_OBJECT connObj, const ChipBleUUID * svcId, const ChipBleUUID * charId, PacketBufferHandle pBuf)
{
return false;
}
bool BlePlatformDelegateImpl::SendReadResponse(BLE_CONNECTION_OBJECT connObj, BLE_READ_REQUEST_CONTEXT requestContext,
const ChipBleUUID * svcId, const ChipBleUUID * charId)
{
return false;
}
} // namespace Internal
} // namespace DeviceLayer
} // namespace chip