ZCLCallbacks.cpp

/*
 *
 *    Copyright (c) 2024 Project CHIP Authors
 *
 *    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.
 */

#include "BridgedDeviceManager.h"

#include <app-common/zap-generated/cluster-objects.h>
#include <app-common/zap-generated/ids/Attributes.h>
#include <app-common/zap-generated/ids/Clusters.h>
#include <lib/support/ZclString.h>

using namespace ::chip;
using namespace ::chip::app::Clusters;

#define ZCL_DESCRIPTOR_CLUSTER_REVISION (1u)
#define ZCL_BRIDGED_DEVICE_BASIC_INFORMATION_CLUSTER_REVISION (2u)
#define ZCL_BRIDGED_DEVICE_BASIC_INFORMATION_FEATURE_MAP (0u)

// External attribute read callback function
Protocols::InteractionModel::Status emberAfExternalAttributeReadCallback(EndpointId endpoint, ClusterId clusterId,
                                                                         const EmberAfAttributeMetadata * attributeMetadata,
                                                                         uint8_t * buffer, uint16_t maxReadLength)
{
    uint16_t endpointIndex  = emberAfGetDynamicIndexFromEndpoint(endpoint);
    AttributeId attributeId = attributeMetadata->attributeId;

    BridgedDevice * dev = BridgeDeviceMgr().GetDevice(endpointIndex);
    if (dev != nullptr && clusterId == app::Clusters::BridgedDeviceBasicInformation::Id)
    {
        using namespace app::Clusters::BridgedDeviceBasicInformation::Attributes;
        ChipLogProgress(NotSpecified, "HandleReadBridgedDeviceBasicAttribute: attrId=%d, maxReadLength=%d", attributeId,
                        maxReadLength);

        if ((attributeId == Reachable::Id) && (maxReadLength == 1))
        {
            *buffer = dev->IsReachable() ? 1 : 0;
        }
        else if ((attributeId == NodeLabel::Id) && (maxReadLength == 32))
        {
            MutableByteSpan zclNameSpan(buffer, maxReadLength);
            MakeZclCharString(zclNameSpan, dev->GetName());
        }
        else if ((attributeId == ClusterRevision::Id) && (maxReadLength == 2))
        {
            uint16_t rev = ZCL_BRIDGED_DEVICE_BASIC_INFORMATION_CLUSTER_REVISION;
            memcpy(buffer, &rev, sizeof(rev));
        }
        else if ((attributeId == FeatureMap::Id) && (maxReadLength == 4))
        {
            uint32_t featureMap = ZCL_BRIDGED_DEVICE_BASIC_INFORMATION_FEATURE_MAP;
            memcpy(buffer, &featureMap, sizeof(featureMap));
        }
        else
        {
            return Protocols::InteractionModel::Status::Failure;
        }
        return Protocols::InteractionModel::Status::Success;
    }

    return Protocols::InteractionModel::Status::Failure;
}

// External attribute write callback function
Protocols::InteractionModel::Status emberAfExternalAttributeWriteCallback(EndpointId endpoint, ClusterId clusterId,
                                                                          const EmberAfAttributeMetadata * attributeMetadata,
                                                                          uint8_t * buffer)
{
    uint16_t endpointIndex                  = emberAfGetDynamicIndexFromEndpoint(endpoint);
    Protocols::InteractionModel::Status ret = Protocols::InteractionModel::Status::Failure;

    BridgedDevice * dev = BridgeDeviceMgr().GetDevice(endpointIndex);
    if (dev != nullptr && dev->IsReachable())
    {
        ChipLogProgress(NotSpecified, "emberAfExternalAttributeWriteCallback: ep=%d, clusterId=%d", endpoint, clusterId);
        ret = Protocols::InteractionModel::Status::Success;
    }

    return ret;
}