Matter SDK Coverage Report
Current view: top level - app/util - attribute-storage.cpp (source / functions) Coverage Total Hit
Test: SHA:e98a48c2e59f85a25417956e1d105721433aa5d1 Lines: 43.4 % 588 255
Test Date: 2026-01-09 16:53:50 Functions: 49.3 % 73 36

            Line data    Source code
       1              : /**
       2              :  *
       3              :  *    Copyright (c) 2020-2023 Project CHIP Authors
       4              :  *
       5              :  *    Licensed under the Apache License, Version 2.0 (the "License");
       6              :  *    you may not use this file except in compliance with the License.
       7              :  *    You may obtain a copy of the License at
       8              :  *
       9              :  *        http://www.apache.org/licenses/LICENSE-2.0
      10              :  *
      11              :  *    Unless required by applicable law or agreed to in writing, software
      12              :  *    distributed under the License is distributed on an "AS IS" BASIS,
      13              :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14              :  *    See the License for the specific language governing permissions and
      15              :  *    limitations under the License.
      16              :  */
      17              : #include "lib/support/Span.h"
      18              : #include <app/util/attribute-storage.h>
      19              : 
      20              : #include <app/AttributeAccessInterfaceRegistry.h>
      21              : #include <app/CommandHandlerInterfaceRegistry.h>
      22              : #include <app/InteractionModelEngine.h>
      23              : #include <app/data-model-provider/ProviderChangeListener.h>
      24              : #include <app/persistence/AttributePersistenceProvider.h>
      25              : #include <app/persistence/AttributePersistenceProviderInstance.h>
      26              : #include <app/persistence/PascalString.h>
      27              : #include <app/reporting/reporting.h>
      28              : #include <app/util/attribute-metadata.h>
      29              : #include <app/util/attribute-storage-detail.h>
      30              : #include <app/util/config.h>
      31              : #include <app/util/ember-io-storage.h>
      32              : #include <app/util/ember-strings.h>
      33              : #include <app/util/endpoint-config-api.h>
      34              : #include <app/util/generic-callbacks.h>
      35              : #include <lib/core/CHIPConfig.h>
      36              : #include <lib/core/CHIPError.h>
      37              : #include <lib/support/CodeUtils.h>
      38              : #include <lib/support/logging/CHIPLogging.h>
      39              : #include <platform/LockTracker.h>
      40              : #include <protocols/interaction_model/StatusCode.h>
      41              : 
      42              : using chip::Protocols::InteractionModel::Status;
      43              : 
      44              : // Attribute storage depends on knowing the current layout/setup of attributes
      45              : // and corresponding callbacks. Specifically:
      46              : //   - zap-generated/callback.h is needed because endpoint_config will call the
      47              : //     corresponding callbacks (via GENERATED_FUNCTION_ARRAYS) and the include
      48              : //     for it is:
      49              : //     util/config.h -> zap-generated/endpoint_config.h
      50              : #include <app-common/zap-generated/callback.h>
      51              : 
      52              : using namespace chip;
      53              : using namespace chip::app;
      54              : 
      55              : //------------------------------------------------------------------------------
      56              : // Globals
      57              : // This is not declared CONST in order to handle dynamic endpoint information
      58              : // retrieved from tokens.
      59              : EmberAfDefinedEndpoint emAfEndpoints[MAX_ENDPOINT_COUNT];
      60              : 
      61              : #if (ATTRIBUTE_MAX_SIZE == 0)
      62              : #define ACTUAL_ATTRIBUTE_SIZE 1
      63              : #else
      64              : #define ACTUAL_ATTRIBUTE_SIZE ATTRIBUTE_MAX_SIZE
      65              : #endif
      66              : 
      67              : uint8_t attributeData[ACTUAL_ATTRIBUTE_SIZE];
      68              : 
      69              : // ----- internal-only methods, not part of the external API -----
      70              : 
      71              : // Loads the attributes from built-in default and storage.
      72              : static void emAfLoadAttributeDefaults(EndpointId endpoint, Optional<ClusterId> = NullOptional);
      73              : 
      74              : static bool emAfMatchCluster(const EmberAfCluster * cluster, const EmberAfAttributeSearchRecord * attRecord);
      75              : static bool emAfMatchAttribute(const EmberAfCluster * cluster, const EmberAfAttributeMetadata * am,
      76              :                                const EmberAfAttributeSearchRecord * attRecord);
      77              : 
      78              : // If server == true, returns the number of server clusters,
      79              : // otherwise number of client clusters on the endpoint at the given index.
      80              : static uint8_t emberAfClusterCountByIndex(uint16_t endpointIndex, bool server);
      81              : 
      82              : // Check whether there is an endpoint defined with the given endpoint id that is
      83              : // enabled.
      84              : static bool emberAfEndpointIsEnabled(EndpointId endpoint);
      85              : 
      86              : namespace {
      87              : 
      88              : uint16_t emberEndpointCount = 0;
      89              : 
      90              : /// Determines a incremental unique index for ember
      91              : /// metadata that is increased whenever a structural change is made to the
      92              : /// ember metadata (e.g. changing dynamic endpoints or enabling/disabling endpoints)
      93              : unsigned emberMetadataStructureGeneration = 0;
      94              : 
      95              : // If we have attributes that are more than 4 bytes, then
      96              : // we need this data block for the defaults
      97              : #if (defined(GENERATED_DEFAULTS) && GENERATED_DEFAULTS_COUNT)
      98              : constexpr const uint8_t generatedDefaults[] = GENERATED_DEFAULTS;
      99              : #define ZAP_LONG_DEFAULTS_INDEX(index)                                                                                             \
     100              :     {                                                                                                                              \
     101              :         &generatedDefaults[index]                                                                                                  \
     102              :     }
     103              : #endif // GENERATED_DEFAULTS
     104              : 
     105              : #if (defined(GENERATED_MIN_MAX_DEFAULTS) && GENERATED_MIN_MAX_DEFAULT_COUNT)
     106              : constexpr const EmberAfAttributeMinMaxValue minMaxDefaults[] = GENERATED_MIN_MAX_DEFAULTS;
     107              : #define ZAP_MIN_MAX_DEFAULTS_INDEX(index)                                                                                          \
     108              :     {                                                                                                                              \
     109              :         &minMaxDefaults[index]                                                                                                     \
     110              :     }
     111              : #endif // GENERATED_MIN_MAX_DEFAULTS
     112              : 
     113              : #ifdef GENERATED_FUNCTION_ARRAYS
     114              : GENERATED_FUNCTION_ARRAYS
     115              : #endif
     116              : 
     117              : #ifdef GENERATED_COMMANDS
     118              : constexpr const CommandId generatedCommands[] = GENERATED_COMMANDS;
     119              : #define ZAP_GENERATED_COMMANDS_INDEX(index) (&generatedCommands[index])
     120              : #endif // GENERATED_COMMANDS
     121              : 
     122              : #if (defined(GENERATED_EVENTS) && (GENERATED_EVENT_COUNT > 0))
     123              : constexpr const EventId generatedEvents[] = GENERATED_EVENTS;
     124              : #define ZAP_GENERATED_EVENTS_INDEX(index) (&generatedEvents[index])
     125              : #endif // GENERATED_EVENTS
     126              : 
     127              : [[maybe_unused]] constexpr const EmberAfAttributeMetadata generatedAttributes[] = GENERATED_ATTRIBUTES;
     128              : #define ZAP_ATTRIBUTE_INDEX(index) (&generatedAttributes[index])
     129              : 
     130              : #ifdef GENERATED_CLUSTERS
     131              : constexpr const EmberAfCluster generatedClusters[] = GENERATED_CLUSTERS;
     132              : #define ZAP_CLUSTER_INDEX(index) (&generatedClusters[index])
     133              : #endif
     134              : 
     135              : #if FIXED_ENDPOINT_COUNT > 0
     136              : constexpr const EmberAfEndpointType generatedEmberAfEndpointTypes[] = GENERATED_ENDPOINT_TYPES;
     137              : constexpr const EmberAfDeviceType fixedDeviceTypeList[]             = FIXED_DEVICE_TYPES;
     138              : 
     139              : // Not const, because these need to mutate.
     140              : DataVersion fixedEndpointDataVersions[ZAP_FIXED_ENDPOINT_DATA_VERSION_COUNT];
     141              : #endif // FIXED_ENDPOINT_COUNT > 0
     142              : 
     143            0 : bool emberAfIsThisDataTypeAListType(EmberAfAttributeType dataType)
     144              : {
     145            0 :     return dataType == ZCL_ARRAY_ATTRIBUTE_TYPE;
     146              : }
     147              : 
     148        13919 : uint16_t findIndexFromEndpoint(EndpointId endpoint, bool ignoreDisabledEndpoints)
     149              : {
     150        13919 :     if (endpoint == kInvalidEndpointId)
     151              :     {
     152            0 :         return kEmberInvalidEndpointIndex;
     153              :     }
     154              : 
     155              :     uint16_t epi;
     156        28184 :     for (epi = 0; epi < emberAfEndpointCount(); epi++)
     157              :     {
     158        42009 :         if (emAfEndpoints[epi].endpoint == endpoint &&
     159        13878 :             (!ignoreDisabledEndpoints || emAfEndpoints[epi].bitmask.Has(EmberAfEndpointOptions::isEnabled)))
     160              :         {
     161        13866 :             return epi;
     162              :         }
     163              :     }
     164           53 :     return kEmberInvalidEndpointIndex;
     165              : }
     166              : 
     167              : // Returns the index of a given endpoint.  Considers disabled endpoints.
     168            0 : uint16_t emberAfIndexFromEndpointIncludingDisabledEndpoints(EndpointId endpoint)
     169              : {
     170            0 :     return findIndexFromEndpoint(endpoint, false /* ignoreDisabledEndpoints */);
     171              : }
     172              : 
     173            0 : CHIP_ERROR ValidateDataContent(ByteSpan span, const EmberAfAttributeMetadata * am)
     174              : {
     175            0 :     if (emberAfIsStringAttributeType(am->attributeType))
     176              :     {
     177            0 :         VerifyOrReturnValue(Storage::ShortPascalBytes::IsValid(span), CHIP_ERROR_INCORRECT_STATE);
     178            0 :         return CHIP_NO_ERROR;
     179              :     }
     180              : 
     181            0 :     if (emberAfIsLongStringAttributeType(am->attributeType))
     182              :     {
     183            0 :         VerifyOrReturnValue(Storage::LongPascalBytes::IsValid(span), CHIP_ERROR_INCORRECT_STATE);
     184            0 :         return CHIP_NO_ERROR;
     185              :     }
     186              : 
     187            0 :     VerifyOrReturnValue(span.size() == am->size, CHIP_ERROR_INCORRECT_STATE);
     188            0 :     return CHIP_NO_ERROR;
     189              : }
     190              : 
     191              : } // anonymous namespace
     192              : 
     193              : // Initial configuration
     194           30 : void emberAfEndpointConfigure()
     195              : {
     196              :     uint16_t ep;
     197              : 
     198              :     static_assert(FIXED_ENDPOINT_COUNT <= std::numeric_limits<decltype(ep)>::max(),
     199              :                   "FIXED_ENDPOINT_COUNT must not exceed the size of the endpoint data type");
     200              : 
     201           30 :     emberEndpointCount = FIXED_ENDPOINT_COUNT;
     202              : 
     203              : #if FIXED_ENDPOINT_COUNT > 0
     204              : 
     205           30 :     constexpr uint16_t fixedEndpoints[]             = FIXED_ENDPOINT_ARRAY;
     206           30 :     constexpr uint16_t fixedDeviceTypeListLengths[] = FIXED_DEVICE_TYPE_LENGTHS;
     207           30 :     constexpr uint16_t fixedDeviceTypeListOffsets[] = FIXED_DEVICE_TYPE_OFFSETS;
     208           30 :     constexpr uint8_t fixedEmberAfEndpointTypes[]   = FIXED_ENDPOINT_TYPES;
     209           30 :     constexpr EndpointId fixedParentEndpoints[]     = FIXED_PARENT_ENDPOINTS;
     210              : 
     211              : #if ZAP_FIXED_ENDPOINT_DATA_VERSION_COUNT > 0
     212              :     // Initialize our data version storage.  If
     213              :     // ZAP_FIXED_ENDPOINT_DATA_VERSION_COUNT == 0, gcc complains about a memset
     214              :     // with size equal to number of elements without multiplication by element
     215              :     // size, because the sizeof() is also 0 in that case...
     216              :     if (Crypto::DRBG_get_bytes(reinterpret_cast<uint8_t *>(fixedEndpointDataVersions), sizeof(fixedEndpointDataVersions)) !=
     217              :         CHIP_NO_ERROR)
     218              :     {
     219              :         // Now what?  At least 0-init it.
     220              :         memset(fixedEndpointDataVersions, 0, sizeof(fixedEndpointDataVersions));
     221              :     }
     222              : #endif // ZAP_FIXED_ENDPOINT_DATA_VERSION_COUNT > 0
     223              : 
     224           30 :     DataVersion * currentDataVersions = fixedEndpointDataVersions;
     225           60 :     for (ep = 0; ep < FIXED_ENDPOINT_COUNT; ep++)
     226              :     {
     227           30 :         emAfEndpoints[ep].endpoint = fixedEndpoints[ep];
     228           30 :         emAfEndpoints[ep].deviceTypeList =
     229           30 :             Span<const EmberAfDeviceType>(&fixedDeviceTypeList[fixedDeviceTypeListOffsets[ep]], fixedDeviceTypeListLengths[ep]);
     230           30 :         emAfEndpoints[ep].endpointType     = &generatedEmberAfEndpointTypes[fixedEmberAfEndpointTypes[ep]];
     231           30 :         emAfEndpoints[ep].dataVersions     = currentDataVersions;
     232           30 :         emAfEndpoints[ep].parentEndpointId = fixedParentEndpoints[ep];
     233              : 
     234           30 :         constexpr const DeviceTypeId kRootnodeId   = 0x0016;
     235           30 :         constexpr const DeviceTypeId kAggregatorId = 0x000E;
     236           30 :         constexpr const DeviceTypeId kBridgedNode  = 0x0013;
     237           30 :         emAfEndpoints[ep].bitmask.Set(EmberAfEndpointOptions::isEnabled);
     238           30 :         for (const auto & deviceType : emAfEndpoints[ep].deviceTypeList)
     239              :         {
     240              :             // Default composition for all device types is set to tree. Except rootnode, aggregator and
     241              :             // bridgednode, which are full-family. Clients can manually override these defaults using
     242              :             // SetFlatCompositionForEndpoint / SetTreeCompositionForEndpoint at application init.
     243              :             // TODO: This information should come from the schema XML, not be hardcoded.
     244           30 :             if ((deviceType.deviceTypeId == kRootnodeId) || (deviceType.deviceTypeId == kAggregatorId) ||
     245            0 :                 (deviceType.deviceTypeId == kBridgedNode))
     246              :             {
     247           30 :                 emAfEndpoints[ep].bitmask.Set(EmberAfEndpointOptions::isFlatComposition);
     248           30 :                 break;
     249              :             }
     250              :         }
     251              : 
     252              :         // Increment currentDataVersions by 1 (slot) for every server cluster
     253              :         // this endpoint has.
     254           30 :         currentDataVersions += emberAfClusterCountByIndex(ep, /* server = */ true);
     255              :     }
     256              : 
     257              : #endif // FIXED_ENDPOINT_COUNT > 0
     258              : 
     259              : #if CHIP_DEVICE_CONFIG_DYNAMIC_ENDPOINT_COUNT
     260              :     if (MAX_ENDPOINT_COUNT > FIXED_ENDPOINT_COUNT)
     261              :     {
     262              :         //
     263              :         // Reset instances tracking dynamic endpoints to safe defaults.
     264              :         //
     265          150 :         for (ep = FIXED_ENDPOINT_COUNT; ep < MAX_ENDPOINT_COUNT; ep++)
     266              :         {
     267          120 :             emAfEndpoints[ep] = EmberAfDefinedEndpoint();
     268              :         }
     269              :     }
     270              : #endif
     271           30 : }
     272              : 
     273           28 : void emberAfSetDynamicEndpointCount(uint16_t dynamicEndpointCount)
     274              : {
     275           28 :     emberEndpointCount = static_cast<uint16_t>(FIXED_ENDPOINT_COUNT + dynamicEndpointCount);
     276           28 : }
     277              : 
     278            0 : uint16_t emberAfGetDynamicIndexFromEndpoint(EndpointId id)
     279              : {
     280            0 :     if (id == kInvalidEndpointId)
     281              :     {
     282            0 :         return kEmberInvalidEndpointIndex;
     283              :     }
     284              : 
     285              :     uint16_t index;
     286            0 :     for (index = FIXED_ENDPOINT_COUNT; index < MAX_ENDPOINT_COUNT; index++)
     287              :     {
     288            0 :         if (emAfEndpoints[index].endpoint == id)
     289              :         {
     290            0 :             return static_cast<uint16_t>(index - FIXED_ENDPOINT_COUNT);
     291              :         }
     292              :     }
     293            0 :     return kEmberInvalidEndpointIndex;
     294              : }
     295              : 
     296           28 : CHIP_ERROR emberAfSetDynamicEndpoint(uint16_t index, EndpointId id, const EmberAfEndpointType * ep,
     297              :                                      const Span<DataVersion> & dataVersionStorage, Span<const EmberAfDeviceType> deviceTypeList,
     298              :                                      EndpointId parentEndpointId)
     299              : {
     300           28 :     return emberAfSetDynamicEndpointWithEpUniqueId(index, id, ep, dataVersionStorage, deviceTypeList, {}, parentEndpointId);
     301              : }
     302              : 
     303           28 : CHIP_ERROR emberAfSetDynamicEndpointWithEpUniqueId(uint16_t index, EndpointId id, const EmberAfEndpointType * ep,
     304              :                                                    const Span<DataVersion> & dataVersionStorage,
     305              :                                                    Span<const EmberAfDeviceType> deviceTypeList, CharSpan endpointUniqueId,
     306              :                                                    EndpointId parentEndpointId)
     307              : {
     308           28 :     auto realIndex = index + FIXED_ENDPOINT_COUNT;
     309              : 
     310           28 :     if (realIndex >= MAX_ENDPOINT_COUNT)
     311              :     {
     312            0 :         return CHIP_ERROR_NO_MEMORY;
     313              :     }
     314           28 :     if (id == kInvalidEndpointId)
     315              :     {
     316            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
     317              :     }
     318              : 
     319           28 :     auto serverClusterCount = emberAfClusterCountForEndpointType(ep, /* server = */ true);
     320           28 :     if (dataVersionStorage.size() < serverClusterCount)
     321              :     {
     322            0 :         return CHIP_ERROR_NO_MEMORY;
     323              :     }
     324              : 
     325           28 :     index = static_cast<uint16_t>(realIndex);
     326          140 :     for (uint16_t i = FIXED_ENDPOINT_COUNT; i < MAX_ENDPOINT_COUNT; i++)
     327              :     {
     328          112 :         if (emAfEndpoints[i].endpoint == id)
     329              :         {
     330            0 :             return CHIP_ERROR_ENDPOINT_EXISTS;
     331              :         }
     332              :     }
     333              : 
     334           28 :     const size_t bufferSize = Compatibility::Internal::gEmberAttributeIOBufferSpan.size();
     335           62 :     for (uint8_t i = 0; i < ep->clusterCount; i++)
     336              :     {
     337           34 :         const EmberAfCluster * cluster = &(ep->cluster[i]);
     338           34 :         if (!cluster->attributes)
     339              :         {
     340            0 :             continue;
     341              :         }
     342              : 
     343          146 :         for (uint16_t j = 0; j < cluster->attributeCount; j++)
     344              :         {
     345          112 :             const EmberAfAttributeMetadata * attr = &(cluster->attributes[j]);
     346          112 :             uint16_t attrSize                     = emberAfAttributeSize(attr);
     347          112 :             if (attrSize > bufferSize)
     348              :             {
     349            0 :                 ChipLogError(DataManagement,
     350              :                              "Attribute size %u exceeds max size %lu, (attrId=" ChipLogFormatMEI ", clusterId=" ChipLogFormatMEI
     351              :                              ")",
     352              :                              attrSize, static_cast<unsigned long>(bufferSize), ChipLogValueMEI(attr->attributeId),
     353              :                              ChipLogValueMEI(cluster->clusterId));
     354            0 :                 return CHIP_ERROR_NO_MEMORY;
     355              :             }
     356              :         }
     357              :     }
     358           28 :     emAfEndpoints[index].endpoint       = id;
     359           28 :     emAfEndpoints[index].deviceTypeList = deviceTypeList;
     360           28 :     emAfEndpoints[index].endpointType   = ep;
     361           28 :     emAfEndpoints[index].dataVersions   = dataVersionStorage.data();
     362              : #if CHIP_CONFIG_USE_ENDPOINT_UNIQUE_ID
     363              :     MutableCharSpan targetSpan(emAfEndpoints[index].endpointUniqueId);
     364              :     if (CopyCharSpanToMutableCharSpan(endpointUniqueId, targetSpan) != CHIP_NO_ERROR)
     365              :     {
     366              :         return CHIP_ERROR_BUFFER_TOO_SMALL;
     367              :     }
     368              : 
     369              :     // Ensure that the size of emAfEndpoints[index].endpointUniqueId fits within uint8_t
     370              :     static_assert(sizeof(emAfEndpoints[0].endpointUniqueId) <= UINT8_MAX,
     371              :                   "The size of emAfEndpoints[index].endpointUniqueId must fit within uint8_t");
     372              : 
     373              :     emAfEndpoints[index].endpointUniqueIdSize = static_cast<uint8_t>(targetSpan.size());
     374              : #endif
     375              :     // Start the endpoint off as disabled.
     376           28 :     emAfEndpoints[index].bitmask.Clear(EmberAfEndpointOptions::isEnabled);
     377           28 :     emAfEndpoints[index].parentEndpointId = parentEndpointId;
     378              : 
     379           28 :     emberAfSetDynamicEndpointCount(MAX_ENDPOINT_COUNT - FIXED_ENDPOINT_COUNT);
     380              : 
     381              :     // Initialize the data versions.
     382           28 :     size_t dataSize = sizeof(DataVersion) * serverClusterCount;
     383           28 :     if (dataSize != 0)
     384              :     {
     385           56 :         if (Crypto::DRBG_get_bytes(reinterpret_cast<uint8_t *>(dataVersionStorage.data()), dataSize) != CHIP_NO_ERROR)
     386              :         {
     387              :             // Now what?  At least 0-init it.
     388            0 :             memset(dataVersionStorage.data(), 0, dataSize);
     389              :         }
     390              :     }
     391              : 
     392              :     // Now enable the endpoint.
     393           28 :     emberAfEndpointEnableDisable(id, true);
     394              : 
     395           28 :     emberMetadataStructureGeneration++;
     396           28 :     return CHIP_NO_ERROR;
     397              : }
     398              : 
     399           27 : EndpointId emberAfClearDynamicEndpoint(uint16_t index, MatterClusterShutdownType shutdownType)
     400              : {
     401           27 :     EndpointId ep = 0;
     402              : 
     403           27 :     index = static_cast<uint16_t>(index + FIXED_ENDPOINT_COUNT);
     404              : 
     405           54 :     if ((index < MAX_ENDPOINT_COUNT) && (emAfEndpoints[index].endpoint != kInvalidEndpointId) &&
     406           27 :         (emberAfEndpointIndexIsEnabled(index)))
     407              :     {
     408           27 :         ep = emAfEndpoints[index].endpoint;
     409           27 :         emberAfEndpointEnableDisable(ep, false, shutdownType);
     410           27 :         emAfEndpoints[index].endpoint = kInvalidEndpointId;
     411              :     }
     412              : 
     413           27 :     emberMetadataStructureGeneration++;
     414           27 :     return ep;
     415              : }
     416              : 
     417        13853 : uint16_t emberAfFixedEndpointCount()
     418              : {
     419        13853 :     return FIXED_ENDPOINT_COUNT;
     420              : }
     421              : 
     422        62631 : uint16_t emberAfEndpointCount()
     423              : {
     424        62631 :     return emberEndpointCount;
     425              : }
     426              : 
     427        14221 : bool emberAfEndpointIndexIsEnabled(uint16_t index)
     428              : {
     429        14221 :     return (emAfEndpoints[index].bitmask.Has(EmberAfEndpointOptions::isEnabled));
     430              : }
     431              : 
     432              : // This function is used to call the per-cluster attribute changed callback
     433            0 : void emAfClusterAttributeChangedCallback(const ConcreteAttributePath & attributePath)
     434              : {
     435            0 :     const EmberAfCluster * cluster = emberAfFindServerCluster(attributePath.mEndpointId, attributePath.mClusterId);
     436            0 :     if (cluster != nullptr)
     437              :     {
     438            0 :         EmberAfGenericClusterFunction f = emberAfFindClusterFunction(cluster, MATTER_CLUSTER_FLAG_ATTRIBUTE_CHANGED_FUNCTION);
     439            0 :         if (f != nullptr)
     440              :         {
     441            0 :             ((EmberAfClusterAttributeChangedCallback) f)(attributePath);
     442              :         }
     443              :     }
     444            0 : }
     445              : 
     446              : // This function is used to call the per-cluster pre-attribute changed callback
     447            0 : Status emAfClusterPreAttributeChangedCallback(const ConcreteAttributePath & attributePath, EmberAfAttributeType attributeType,
     448              :                                               uint16_t size, uint8_t * value)
     449              : {
     450            0 :     const EmberAfCluster * cluster = emberAfFindServerCluster(attributePath.mEndpointId, attributePath.mClusterId);
     451            0 :     if (cluster == nullptr)
     452              :     {
     453            0 :         if (!emberAfEndpointIsEnabled(attributePath.mEndpointId))
     454              :         {
     455            0 :             return Status::UnsupportedEndpoint;
     456              :         }
     457            0 :         return Status::UnsupportedCluster;
     458              :     }
     459              : 
     460            0 :     Status status = Status::Success;
     461              :     // Casting and calling a function pointer on the same line results in ignoring the return
     462              :     // of the call on gcc-arm-none-eabi-9-2019-q4-major
     463            0 :     EmberAfClusterPreAttributeChangedCallback f = (EmberAfClusterPreAttributeChangedCallback) (emberAfFindClusterFunction(
     464              :         cluster, MATTER_CLUSTER_FLAG_PRE_ATTRIBUTE_CHANGED_FUNCTION));
     465            0 :     if (f != nullptr)
     466              :     {
     467            0 :         status = f(attributePath, attributeType, size, value);
     468              :     }
     469            0 :     return status;
     470              : }
     471              : 
     472           59 : static void initializeEndpoint(EmberAfDefinedEndpoint * definedEndpoint)
     473              : {
     474              :     uint8_t clusterIndex;
     475           59 :     const EmberAfEndpointType * epType = definedEndpoint->endpointType;
     476         3544 :     for (clusterIndex = 0; clusterIndex < epType->clusterCount; clusterIndex++)
     477              :     {
     478         3485 :         const EmberAfCluster * cluster = &(epType->cluster[clusterIndex]);
     479              :         EmberAfGenericClusterFunction f;
     480         3485 :         if (cluster->IsServer())
     481              :         {
     482              :             // Call the code-driven init callback before the emberAf... one,
     483              :             // so the latter can be used to configure code-driven clusters
     484           35 :             MatterClusterServerInitCallback(definedEndpoint->endpoint, cluster->clusterId);
     485              :         }
     486         3485 :         emberAfClusterInitCallback(definedEndpoint->endpoint, cluster->clusterId);
     487         3485 :         f = emberAfFindClusterFunction(cluster, MATTER_CLUSTER_FLAG_INIT_FUNCTION);
     488         3485 :         if (f != nullptr)
     489              :         {
     490            0 :             ((EmberAfInitFunction) f)(definedEndpoint->endpoint);
     491              :         }
     492              :     }
     493           59 : }
     494              : 
     495           28 : static void shutdownEndpoint(EmberAfDefinedEndpoint * definedEndpoint, MatterClusterShutdownType shutdownType)
     496              : {
     497              :     // Call shutdown callbacks from clusters, mainly for canceling pending timers
     498              :     uint8_t clusterIndex;
     499           28 :     const EmberAfEndpointType * epType = definedEndpoint->endpointType;
     500           62 :     for (clusterIndex = 0; clusterIndex < epType->clusterCount; clusterIndex++)
     501              :     {
     502           34 :         const EmberAfCluster * cluster = &(epType->cluster[clusterIndex]);
     503           34 :         if (cluster->IsServer())
     504              :         {
     505           34 :             MatterClusterServerShutdownCallback(definedEndpoint->endpoint, cluster->clusterId, shutdownType);
     506              :         }
     507           34 :         EmberAfGenericClusterFunction f = emberAfFindClusterFunction(cluster, MATTER_CLUSTER_FLAG_SHUTDOWN_FUNCTION);
     508           34 :         if (f != nullptr)
     509              :         {
     510            0 :             ((EmberAfShutdownFunction) f)(definedEndpoint->endpoint);
     511              :         }
     512              :     }
     513              : 
     514           28 :     CommandHandlerInterfaceRegistry::Instance().UnregisterAllCommandHandlersForEndpoint(definedEndpoint->endpoint);
     515           28 :     AttributeAccessInterfaceRegistry::Instance().UnregisterAllForEndpoint(definedEndpoint->endpoint);
     516           28 : }
     517              : 
     518              : // Calls the init functions.
     519           30 : void emAfCallInits()
     520              : {
     521              :     uint16_t index;
     522           60 :     for (index = 0; index < emberAfEndpointCount(); index++)
     523              :     {
     524           30 :         if (emberAfEndpointIndexIsEnabled(index))
     525              :         {
     526           30 :             initializeEndpoint(&(emAfEndpoints[index]));
     527              :         }
     528              :     }
     529           30 : }
     530              : 
     531              : // Returns the pointer to metadata, or null if it is not found
     532         6914 : const EmberAfAttributeMetadata * emberAfLocateAttributeMetadata(EndpointId endpoint, ClusterId clusterId, AttributeId attributeId)
     533              : {
     534         6914 :     const EmberAfAttributeMetadata * metadata = nullptr;
     535              :     EmberAfAttributeSearchRecord record;
     536         6914 :     record.endpoint    = endpoint;
     537         6914 :     record.clusterId   = clusterId;
     538         6914 :     record.attributeId = attributeId;
     539         6914 :     emAfReadOrWriteAttribute(&record, &metadata,
     540              :                              nullptr, // buffer
     541              :                              0,       // buffer size
     542              :                              false);  // write?
     543         6914 :     return metadata;
     544              : }
     545              : 
     546              : // This function does mem copy, but smartly, which means that if the type is a
     547              : // string, it will copy as much as it can.
     548              : // If src == NULL, then this method will set memory to zeroes
     549              : // See documentation for emAfReadOrWriteAttribute for the semantics of
     550              : // readLength when reading and writing.
     551            0 : static Status typeSensitiveMemCopy(ClusterId clusterId, uint8_t * dest, uint8_t * src, const EmberAfAttributeMetadata * am,
     552              :                                    bool write, uint16_t readLength)
     553              : {
     554            0 :     EmberAfAttributeType attributeType = am->attributeType;
     555              :     // readLength == 0 for a read indicates that we should just trust that the
     556              :     // caller has enough space for an attribute...
     557            0 :     bool ignoreReadLength = write || (readLength == 0);
     558            0 :     uint16_t bufferSize   = ignoreReadLength ? am->size : readLength;
     559              : 
     560            0 :     if (emberAfIsStringAttributeType(attributeType))
     561              :     {
     562            0 :         if (bufferSize < 1)
     563              :         {
     564            0 :             return Status::ResourceExhausted;
     565              :         }
     566            0 :         emberAfCopyString(dest, src, bufferSize - 1);
     567              :     }
     568            0 :     else if (emberAfIsLongStringAttributeType(attributeType))
     569              :     {
     570            0 :         if (bufferSize < 2)
     571              :         {
     572            0 :             return Status::ResourceExhausted;
     573              :         }
     574            0 :         emberAfCopyLongString(dest, src, bufferSize - 2);
     575              :     }
     576            0 :     else if (emberAfIsThisDataTypeAListType(attributeType))
     577              :     {
     578            0 :         if (bufferSize < 2)
     579              :         {
     580            0 :             return Status::ResourceExhausted;
     581              :         }
     582              : 
     583              :         // Just copy the length.
     584            0 :         memmove(dest, src, 2);
     585              :     }
     586              :     else
     587              :     {
     588            0 :         if (!ignoreReadLength && readLength < am->size)
     589              :         {
     590            0 :             return Status::ResourceExhausted;
     591              :         }
     592            0 :         if (src == nullptr)
     593              :         {
     594            0 :             memset(dest, 0, am->size);
     595              :         }
     596              :         else
     597              :         {
     598            0 :             memmove(dest, src, am->size);
     599              :         }
     600              :     }
     601            0 :     return Status::Success;
     602              : }
     603              : 
     604              : /**
     605              :  * @brief Matches a cluster based on cluster id and direction.
     606              :  *
     607              :  *   This function assumes that the passed cluster's endpoint already
     608              :  *   matches the endpoint of the EmberAfAttributeSearchRecord.
     609              :  *
     610              :  * Clusters match if:
     611              :  *   1. Cluster ids match AND
     612              :  *   2. Cluster is a server cluster (because there are no client attributes).
     613              :  */
     614         6914 : bool emAfMatchCluster(const EmberAfCluster * cluster, const EmberAfAttributeSearchRecord * attRecord)
     615              : {
     616         6914 :     return (cluster->clusterId == attRecord->clusterId && (cluster->mask & MATTER_CLUSTER_FLAG_SERVER));
     617              : }
     618              : 
     619              : /**
     620              :  * @brief Matches an attribute based on attribute id.
     621              :  *   This function assumes that the passed cluster already matches the
     622              :  *   clusterId and direction of the passed EmberAfAttributeSearchRecord.
     623              :  *
     624              :  * Attributes match if attr ids match.
     625              :  */
     626        10021 : bool emAfMatchAttribute(const EmberAfCluster * cluster, const EmberAfAttributeMetadata * am,
     627              :                         const EmberAfAttributeSearchRecord * attRecord)
     628              : {
     629        10021 :     return (am->attributeId == attRecord->attributeId);
     630              : }
     631              : 
     632              : // When reading non-string attributes, this function returns an error when destination
     633              : // buffer isn't large enough to accommodate the attribute type.  For strings, the
     634              : // function will copy at most readLength bytes.  This means the resulting string
     635              : // may be truncated.  The length byte(s) in the resulting string will reflect
     636              : // any truncation.  If readLength is zero, we are working with backwards-
     637              : // compatibility wrapper functions and we just cross our fingers and hope for
     638              : // the best.
     639              : //
     640              : // When writing attributes, readLength is ignored.  For non-string attributes,
     641              : // this function assumes the source buffer is the same size as the attribute
     642              : // type.  For strings, the function will copy as many bytes as will fit in the
     643              : // attribute.  This means the resulting string may be truncated.  The length
     644              : // byte(s) in the resulting string will reflect any truncated.
     645         6914 : Status emAfReadOrWriteAttribute(const EmberAfAttributeSearchRecord * attRecord, const EmberAfAttributeMetadata ** metadata,
     646              :                                 uint8_t * buffer, uint16_t readLength, bool write)
     647              : {
     648         6914 :     assertChipStackLockedByCurrentThread();
     649              : 
     650         6914 :     uint16_t attributeOffsetIndex = 0;
     651              : 
     652        13853 :     for (uint16_t ep = 0; ep < emberAfEndpointCount(); ep++)
     653              :     {
     654              :         // Is this a dynamic endpoint?
     655        13853 :         bool isDynamicEndpoint = (ep >= emberAfFixedEndpointCount());
     656              : 
     657        13853 :         if (emAfEndpoints[ep].endpoint == attRecord->endpoint)
     658              :         {
     659         6914 :             const EmberAfEndpointType * endpointType = emAfEndpoints[ep].endpointType;
     660              :             uint8_t clusterIndex;
     661         6914 :             if (!emberAfEndpointIndexIsEnabled(ep))
     662              :             {
     663            0 :                 continue;
     664              :             }
     665         6914 :             for (clusterIndex = 0; clusterIndex < endpointType->clusterCount; clusterIndex++)
     666              :             {
     667         6914 :                 const EmberAfCluster * cluster = &(endpointType->cluster[clusterIndex]);
     668         6914 :                 if (emAfMatchCluster(cluster, attRecord))
     669              :                 { // Got the cluster
     670              :                     uint16_t attrIndex;
     671        10021 :                     for (attrIndex = 0; attrIndex < cluster->attributeCount; attrIndex++)
     672              :                     {
     673        10021 :                         const EmberAfAttributeMetadata * am = &(cluster->attributes[attrIndex]);
     674        10021 :                         if (emAfMatchAttribute(cluster, am, attRecord))
     675              :                         { // Got the attribute
     676              :                             // If passed metadata location is not null, populate
     677         6914 :                             if (metadata != nullptr)
     678              :                             {
     679         6914 :                                 *metadata = am;
     680              :                             }
     681              : 
     682              :                             {
     683         6914 :                                 uint8_t * attributeLocation = attributeData + attributeOffsetIndex;
     684              :                                 uint8_t *src, *dst;
     685         6914 :                                 if (write)
     686              :                                 {
     687            0 :                                     src = buffer;
     688            0 :                                     dst = attributeLocation;
     689            0 :                                     if (!emberAfAttributeWriteAccessCallback(attRecord->endpoint, attRecord->clusterId,
     690            0 :                                                                              am->attributeId))
     691              :                                     {
     692            0 :                                         return Status::UnsupportedAccess;
     693              :                                     }
     694              :                                 }
     695              :                                 else
     696              :                                 {
     697         6914 :                                     if (buffer == nullptr)
     698              :                                     {
     699         6914 :                                         return Status::Success;
     700              :                                     }
     701              : 
     702            0 :                                     src = attributeLocation;
     703            0 :                                     dst = buffer;
     704            0 :                                     if (!emberAfAttributeReadAccessCallback(attRecord->endpoint, attRecord->clusterId,
     705            0 :                                                                             am->attributeId))
     706              :                                     {
     707            0 :                                         return Status::UnsupportedAccess;
     708              :                                     }
     709              :                                 }
     710              : 
     711              :                                 // Is the attribute externally stored?
     712            0 :                                 if (am->mask & MATTER_ATTRIBUTE_FLAG_EXTERNAL_STORAGE)
     713              :                                 {
     714            0 :                                     if (write)
     715              :                                     {
     716            0 :                                         return emberAfExternalAttributeWriteCallback(attRecord->endpoint, attRecord->clusterId, am,
     717            0 :                                                                                      buffer);
     718              :                                     }
     719              : 
     720            0 :                                     if (readLength < emberAfAttributeSize(am))
     721              :                                     {
     722              :                                         // Prevent a potential buffer overflow
     723            0 :                                         return Status::ResourceExhausted;
     724              :                                     }
     725              : 
     726            0 :                                     return emberAfExternalAttributeReadCallback(attRecord->endpoint, attRecord->clusterId, am,
     727            0 :                                                                                 buffer, emberAfAttributeSize(am));
     728              :                                 }
     729              : 
     730              :                                 // Internal storage is only supported for fixed endpoints
     731            0 :                                 if (!isDynamicEndpoint)
     732              :                                 {
     733            0 :                                     return typeSensitiveMemCopy(attRecord->clusterId, dst, src, am, write, readLength);
     734              :                                 }
     735              : 
     736            0 :                                 return Status::Failure;
     737              :                             }
     738              :                         }
     739              :                         else
     740              :                         { // Not the attribute we are looking for
     741              :                             // Increase the index if attribute is not externally stored
     742         3107 :                             if (!(am->mask & MATTER_ATTRIBUTE_FLAG_EXTERNAL_STORAGE))
     743              :                             {
     744            0 :                                 attributeOffsetIndex = static_cast<uint16_t>(attributeOffsetIndex + emberAfAttributeSize(am));
     745              :                             }
     746              :                         }
     747              :                     }
     748              : 
     749              :                     // Attribute is not in the cluster.
     750            0 :                     return Status::UnsupportedAttribute;
     751              :                 }
     752              : 
     753              :                 // Not the cluster we are looking for
     754            0 :                 attributeOffsetIndex = static_cast<uint16_t>(attributeOffsetIndex + cluster->clusterSize);
     755              :             }
     756              : 
     757              :             // Cluster is not in the endpoint.
     758            0 :             return Status::UnsupportedCluster;
     759              :         }
     760              : 
     761              :         // Not the endpoint we are looking for
     762              :         // Dynamic endpoints are external and don't factor into storage size
     763         6939 :         if (!isDynamicEndpoint)
     764              :         {
     765         6914 :             attributeOffsetIndex = static_cast<uint16_t>(attributeOffsetIndex + emAfEndpoints[ep].endpointType->endpointSize);
     766              :         }
     767              :     }
     768            0 :     return Status::UnsupportedEndpoint; // Sorry, endpoint was not found.
     769              : }
     770              : 
     771         4310 : const EmberAfEndpointType * emberAfFindEndpointType(EndpointId endpointId)
     772              : {
     773         4310 :     uint16_t ep = emberAfIndexFromEndpoint(endpointId);
     774         4310 :     if (ep == kEmberInvalidEndpointIndex)
     775              :     {
     776            5 :         return nullptr;
     777              :     }
     778         4305 :     return emAfEndpoints[ep].endpointType;
     779              : }
     780              : 
     781         9504 : const EmberAfCluster * emberAfFindClusterInType(const EmberAfEndpointType * endpointType, ClusterId clusterId,
     782              :                                                 EmberAfClusterMask mask, uint8_t * index)
     783              : {
     784              :     uint8_t i;
     785         9504 :     uint8_t scopedIndex = 0;
     786              : 
     787         9535 :     for (i = 0; i < endpointType->clusterCount; i++)
     788              :     {
     789         9525 :         const EmberAfCluster * cluster = &(endpointType->cluster[i]);
     790              : 
     791         9525 :         if (mask == 0 || ((cluster->mask & mask) != 0))
     792              :         {
     793         9525 :             if (cluster->clusterId == clusterId)
     794              :             {
     795         9494 :                 if (index)
     796              :                 {
     797         9459 :                     *index = scopedIndex;
     798              :                 }
     799              : 
     800         9494 :                 return cluster;
     801              :             }
     802              : 
     803           31 :             scopedIndex++;
     804              :         }
     805              :     }
     806              : 
     807           10 :     return nullptr;
     808              : }
     809              : 
     810         9469 : uint8_t emberAfClusterIndex(EndpointId endpoint, ClusterId clusterId, EmberAfClusterMask mask)
     811              : {
     812        19053 :     for (uint16_t ep = 0; ep < emberAfEndpointCount(); ep++)
     813              :     {
     814              :         // Check the endpoint id first, because that way we avoid examining the
     815              :         // endpoint type for endpoints that are not actually defined.
     816        19043 :         if (emAfEndpoints[ep].endpoint == endpoint)
     817              :         {
     818         9469 :             const EmberAfEndpointType * endpointType = emAfEndpoints[ep].endpointType;
     819         9469 :             uint8_t index                            = 0xFF;
     820         9469 :             if (emberAfFindClusterInType(endpointType, clusterId, mask, &index) != nullptr)
     821              :             {
     822         9459 :                 return index;
     823              :             }
     824              :         }
     825              :     }
     826           10 :     return 0xFF;
     827              : }
     828              : 
     829              : // Returns whether the given endpoint has the server of the given cluster on it.
     830            0 : bool emberAfContainsServer(EndpointId endpoint, ClusterId clusterId)
     831              : {
     832            0 :     return (emberAfFindServerCluster(endpoint, clusterId) != nullptr);
     833              : }
     834              : 
     835              : // Returns whether the given endpoint has the client of the given cluster on it.
     836            0 : bool emberAfContainsClient(EndpointId endpoint, ClusterId clusterId)
     837              : {
     838            0 :     uint16_t ep = emberAfIndexFromEndpoint(endpoint);
     839            0 :     if (ep == kEmberInvalidEndpointIndex)
     840              :     {
     841            0 :         return false;
     842              :     }
     843              : 
     844            0 :     return (emberAfFindClusterInType(emAfEndpoints[ep].endpointType, clusterId, MATTER_CLUSTER_FLAG_CLIENT) != nullptr);
     845              : }
     846              : 
     847              : // This will find the first server that has the clusterId given from the index of endpoint.
     848            0 : bool emberAfContainsServerFromIndex(uint16_t index, ClusterId clusterId)
     849              : {
     850            0 :     if (index == kEmberInvalidEndpointIndex)
     851              :     {
     852            0 :         return false;
     853              :     }
     854              : 
     855            0 :     return emberAfFindClusterInType(emAfEndpoints[index].endpointType, clusterId, MATTER_CLUSTER_FLAG_SERVER);
     856              : }
     857              : 
     858              : namespace chip {
     859              : namespace app {
     860              : 
     861            0 : EnabledEndpointsWithServerCluster::EnabledEndpointsWithServerCluster(ClusterId clusterId) :
     862            0 :     mEndpointCount(emberAfEndpointCount()), mClusterId(clusterId)
     863              : {
     864            0 :     EnsureMatchingEndpoint();
     865            0 : }
     866              : 
     867            0 : EndpointId EnabledEndpointsWithServerCluster::operator*() const
     868              : {
     869            0 :     return emberAfEndpointFromIndex(mEndpointIndex);
     870              : }
     871              : 
     872            0 : EnabledEndpointsWithServerCluster & EnabledEndpointsWithServerCluster::operator++()
     873              : {
     874            0 :     ++mEndpointIndex;
     875            0 :     EnsureMatchingEndpoint();
     876            0 :     return *this;
     877              : }
     878              : 
     879            0 : void EnabledEndpointsWithServerCluster::EnsureMatchingEndpoint()
     880              : {
     881            0 :     for (; mEndpointIndex < mEndpointCount; ++mEndpointIndex)
     882              :     {
     883            0 :         if (!emberAfEndpointIndexIsEnabled(mEndpointIndex))
     884              :         {
     885            0 :             continue;
     886              :         }
     887              : 
     888            0 :         if (emberAfContainsServerFromIndex(mEndpointIndex, mClusterId))
     889              :         {
     890            0 :             break;
     891              :         }
     892              :     }
     893            0 : }
     894              : 
     895              : } // namespace app
     896              : } // namespace chip
     897              : 
     898              : // Finds the cluster that matches endpoint, clusterId, direction.
     899           36 : const EmberAfCluster * emberAfFindServerCluster(EndpointId endpoint, ClusterId clusterId)
     900              : {
     901           36 :     uint16_t ep = emberAfIndexFromEndpoint(endpoint);
     902           36 :     if (ep == kEmberInvalidEndpointIndex)
     903              :     {
     904            1 :         return nullptr;
     905              :     }
     906              : 
     907           35 :     return emberAfFindClusterInType(emAfEndpoints[ep].endpointType, clusterId, MATTER_CLUSTER_FLAG_SERVER);
     908              : }
     909              : 
     910              : // Returns cluster within the endpoint; Does not ignore disabled endpoints
     911            0 : const EmberAfCluster * emberAfFindClusterIncludingDisabledEndpoints(EndpointId endpoint, ClusterId clusterId,
     912              :                                                                     EmberAfClusterMask mask)
     913              : {
     914            0 :     uint16_t ep = emberAfIndexFromEndpointIncludingDisabledEndpoints(endpoint);
     915            0 :     if (ep < MAX_ENDPOINT_COUNT)
     916              :     {
     917            0 :         return emberAfFindClusterInType(emAfEndpoints[ep].endpointType, clusterId, mask);
     918              :     }
     919            0 :     return nullptr;
     920              : }
     921              : 
     922            0 : uint16_t emberAfGetClusterServerEndpointIndex(EndpointId endpoint, ClusterId cluster, uint16_t fixedClusterServerEndpointCount)
     923              : {
     924            0 :     VerifyOrDie(fixedClusterServerEndpointCount <= FIXED_ENDPOINT_COUNT);
     925            0 :     uint16_t epIndex = findIndexFromEndpoint(endpoint, true /*ignoreDisabledEndpoints*/);
     926              : 
     927              :     // Endpoint must be configured and enabled
     928            0 :     if (epIndex == kEmberInvalidEndpointIndex)
     929              :     {
     930            0 :         return kEmberInvalidEndpointIndex;
     931              :     }
     932              : 
     933            0 :     if (emberAfFindClusterInType(emAfEndpoints[epIndex].endpointType, cluster, MATTER_CLUSTER_FLAG_SERVER) == nullptr)
     934              :     {
     935              :         // The provided endpoint does not contain the given cluster server.
     936            0 :         return kEmberInvalidEndpointIndex;
     937              :     }
     938              : 
     939            0 :     if (epIndex < FIXED_ENDPOINT_COUNT)
     940              :     {
     941              :         // This endpoint is a fixed one.
     942              :         // Return the index of this endpoint in the list of fixed endpoints that support the given cluster.
     943            0 :         uint16_t adjustedEndpointIndex = 0;
     944            0 :         for (uint16_t i = 0; i < epIndex; i++)
     945              :         {
     946              :             // Increase adjustedEndpointIndex for every endpoint containing the cluster server
     947              :             // before our endpoint of interest
     948            0 :             if (emAfEndpoints[i].endpoint != kInvalidEndpointId &&
     949            0 :                 (emberAfFindClusterInType(emAfEndpoints[i].endpointType, cluster, MATTER_CLUSTER_FLAG_SERVER) != nullptr))
     950              :             {
     951            0 :                 adjustedEndpointIndex++;
     952              :             }
     953              :         }
     954              : 
     955              :         // If this asserts, the provided fixedClusterServerEndpointCount doesn't match the app data model.
     956            0 :         VerifyOrDie(adjustedEndpointIndex < fixedClusterServerEndpointCount);
     957            0 :         epIndex = adjustedEndpointIndex;
     958              :     }
     959              :     else
     960              :     {
     961              :         // This is a dynamic endpoint.
     962              :         // Its index is just its index in the dynamic endpoint list, offset by fixedClusterServerEndpointCount.
     963            0 :         epIndex = static_cast<uint16_t>(fixedClusterServerEndpointCount + (epIndex - FIXED_ENDPOINT_COUNT));
     964              :     }
     965              : 
     966            0 :     return epIndex;
     967              : }
     968              : 
     969            0 : bool emberAfEndpointIsEnabled(EndpointId endpoint)
     970              : {
     971            0 :     uint16_t index = findIndexFromEndpoint(endpoint, false /* ignoreDisabledEndpoints */);
     972              : 
     973            0 :     if (kEmberInvalidEndpointIndex == index)
     974              :     {
     975            0 :         return false;
     976              :     }
     977              : 
     978            0 :     return emberAfEndpointIndexIsEnabled(index);
     979              : }
     980              : 
     981           57 : bool emberAfEndpointEnableDisable(EndpointId endpoint, bool enable, MatterClusterShutdownType shutdownType)
     982              : {
     983           57 :     uint16_t index = findIndexFromEndpoint(endpoint, false /* ignoreDisabledEndpoints */);
     984              :     bool currentlyEnabled;
     985              : 
     986           57 :     if (kEmberInvalidEndpointIndex == index)
     987              :     {
     988            0 :         return false;
     989              :     }
     990              : 
     991           57 :     currentlyEnabled = emAfEndpoints[index].bitmask.Has(EmberAfEndpointOptions::isEnabled);
     992              : 
     993           57 :     if (enable)
     994              :     {
     995           29 :         emAfEndpoints[index].bitmask.Set(EmberAfEndpointOptions::isEnabled);
     996              :     }
     997              : 
     998           57 :     if (currentlyEnabled != enable)
     999              :     {
    1000           57 :         if (enable)
    1001              :         {
    1002           29 :             initializeEndpoint(&(emAfEndpoints[index]));
    1003           29 :             emberAfEndpointChanged(endpoint, emberAfGlobalInteractionModelAttributesChangedListener());
    1004              :         }
    1005              :         else
    1006              :         {
    1007           28 :             shutdownEndpoint(&(emAfEndpoints[index]), shutdownType);
    1008           28 :             emAfEndpoints[index].bitmask.Clear(EmberAfEndpointOptions::isEnabled);
    1009              :         }
    1010              : 
    1011           57 :         EndpointId parentEndpointId = emberAfParentEndpointFromIndex(index);
    1012           57 :         while (parentEndpointId != kInvalidEndpointId)
    1013              :         {
    1014            0 :             emberAfAttributeChanged(parentEndpointId, Clusters::Descriptor::Id, Clusters::Descriptor::Attributes::PartsList::Id,
    1015              :                                     emberAfGlobalInteractionModelAttributesChangedListener());
    1016            0 :             uint16_t parentIndex = emberAfIndexFromEndpoint(parentEndpointId);
    1017            0 :             if (parentIndex == kEmberInvalidEndpointIndex)
    1018              :             {
    1019              :                 // Something has gone wrong.
    1020            0 :                 break;
    1021              :             }
    1022            0 :             parentEndpointId = emberAfParentEndpointFromIndex(parentIndex);
    1023              :         }
    1024              : 
    1025           57 :         emberAfAttributeChanged(/* endpoint = */ 0, Clusters::Descriptor::Id, Clusters::Descriptor::Attributes::PartsList::Id,
    1026              :                                 emberAfGlobalInteractionModelAttributesChangedListener());
    1027              :     }
    1028              : 
    1029           57 :     emberMetadataStructureGeneration++;
    1030           57 :     return true;
    1031              : }
    1032              : 
    1033        12136 : unsigned emberAfMetadataStructureGeneration()
    1034              : {
    1035        12136 :     return emberMetadataStructureGeneration;
    1036              : }
    1037              : 
    1038              : // Returns the index of a given endpoint.  Does not consider disabled endpoints.
    1039        13862 : uint16_t emberAfIndexFromEndpoint(EndpointId endpoint)
    1040              : {
    1041        13862 :     return findIndexFromEndpoint(endpoint, true /* ignoreDisabledEndpoints */);
    1042              : }
    1043              : 
    1044         2917 : EndpointId emberAfEndpointFromIndex(uint16_t index)
    1045              : {
    1046         2917 :     return emAfEndpoints[index].endpoint;
    1047              : }
    1048              : 
    1049         2974 : EndpointId emberAfParentEndpointFromIndex(uint16_t index)
    1050              : {
    1051         2974 :     return emAfEndpoints[index].parentEndpointId;
    1052              : }
    1053              : 
    1054              : // If server == true, returns the number of server clusters,
    1055              : // otherwise number of client clusters on this endpoint
    1056            0 : uint8_t emberAfClusterCount(EndpointId endpoint, bool server)
    1057              : {
    1058            0 :     uint16_t index = emberAfIndexFromEndpoint(endpoint);
    1059            0 :     if (index == kEmberInvalidEndpointIndex)
    1060              :     {
    1061            0 :         return 0;
    1062              :     }
    1063              : 
    1064            0 :     return emberAfClusterCountByIndex(index, server);
    1065              : }
    1066              : 
    1067           30 : uint8_t emberAfClusterCountByIndex(uint16_t endpointIndex, bool server)
    1068              : {
    1069           30 :     const EmberAfDefinedEndpoint * de = &(emAfEndpoints[endpointIndex]);
    1070           30 :     if (de->endpointType == nullptr)
    1071              :     {
    1072            0 :         return 0;
    1073              :     }
    1074              : 
    1075           30 :     return emberAfClusterCountForEndpointType(de->endpointType, server);
    1076              : }
    1077              : 
    1078         4363 : uint8_t emberAfClusterCountForEndpointType(const EmberAfEndpointType * type, bool server)
    1079              : {
    1080         4363 :     const EmberAfClusterMask cluster_mask = server ? MATTER_CLUSTER_FLAG_SERVER : MATTER_CLUSTER_FLAG_CLIENT;
    1081              : 
    1082         4363 :     return static_cast<uint8_t>(std::count_if(type->cluster, type->cluster + type->clusterCount,
    1083        13655 :                                               [=](const EmberAfCluster & cluster) { return (cluster.mask & cluster_mask) != 0; }));
    1084              : }
    1085              : 
    1086            0 : uint8_t emberAfGetClusterCountForEndpoint(EndpointId endpoint)
    1087              : {
    1088            0 :     uint16_t index = emberAfIndexFromEndpoint(endpoint);
    1089            0 :     if (index == kEmberInvalidEndpointIndex)
    1090              :     {
    1091            0 :         return 0;
    1092              :     }
    1093            0 :     return emAfEndpoints[index].endpointType->clusterCount;
    1094              : }
    1095              : 
    1096            0 : Span<const EmberAfDeviceType> emberAfDeviceTypeListFromEndpoint(EndpointId endpoint, CHIP_ERROR & err)
    1097              : {
    1098            0 :     return emberAfDeviceTypeListFromEndpointIndex(emberAfIndexFromEndpoint(endpoint), err);
    1099              : }
    1100              : 
    1101            0 : chip::Span<const EmberAfDeviceType> emberAfDeviceTypeListFromEndpointIndex(unsigned endpointIndex, CHIP_ERROR & err)
    1102              : {
    1103            0 :     if (endpointIndex == 0xFFFF)
    1104              :     {
    1105            0 :         err = CHIP_ERROR_INVALID_ARGUMENT;
    1106            0 :         return Span<const EmberAfDeviceType>();
    1107              :     }
    1108              : 
    1109            0 :     err = CHIP_NO_ERROR;
    1110            0 :     return emAfEndpoints[endpointIndex].deviceTypeList;
    1111              : }
    1112              : 
    1113            0 : void GetSemanticTagsForEndpoint(EndpointId endpoint,
    1114              :                                 Span<const Clusters::Descriptor::Structs::SemanticTagStruct::Type> & semanticTags)
    1115              : {
    1116            0 :     uint16_t endpointIndex = emberAfIndexFromEndpoint(endpoint);
    1117              : 
    1118            0 :     if (endpointIndex == 0xFFFF)
    1119              :     {
    1120            0 :         semanticTags = Span<const Clusters::Descriptor::Structs::SemanticTagStruct::Type>();
    1121            0 :         return;
    1122              :     }
    1123            0 :     semanticTags = emAfEndpoints[endpointIndex].tagList;
    1124              : }
    1125              : 
    1126            0 : CHIP_ERROR GetSemanticTagForEndpointAtIndex(EndpointId endpoint, size_t index,
    1127              :                                             Clusters::Descriptor::Structs::SemanticTagStruct::Type & tag)
    1128              : {
    1129            0 :     uint16_t endpointIndex = emberAfIndexFromEndpoint(endpoint);
    1130              : 
    1131            0 :     if (endpointIndex == 0xFFFF || index >= emAfEndpoints[endpointIndex].tagList.size())
    1132              :     {
    1133            0 :         return CHIP_ERROR_NOT_FOUND;
    1134              :     }
    1135            0 :     tag = emAfEndpoints[endpointIndex].tagList[index];
    1136            0 :     return CHIP_NO_ERROR;
    1137              : }
    1138              : #if CHIP_CONFIG_USE_ENDPOINT_UNIQUE_ID
    1139              : CHIP_ERROR emberAfGetEndpointUniqueIdForEndPoint(EndpointId endpoint, MutableCharSpan & epUniqueIdMutSpan)
    1140              : {
    1141              :     uint16_t endpointIndex = emberAfIndexFromEndpoint(endpoint);
    1142              : 
    1143              :     if (endpointIndex == 0xFFFF)
    1144              :     {
    1145              :         return CHIP_ERROR_NOT_FOUND;
    1146              :     }
    1147              : 
    1148              :     CharSpan epUniqueIdSpan(emAfEndpoints[endpointIndex].endpointUniqueId, emAfEndpoints[endpointIndex].endpointUniqueIdSize);
    1149              :     return CopyCharSpanToMutableCharSpan(epUniqueIdSpan, epUniqueIdMutSpan);
    1150              : }
    1151              : #endif
    1152            0 : CHIP_ERROR emberAfSetDeviceTypeList(EndpointId endpoint, Span<const EmberAfDeviceType> deviceTypeList)
    1153              : {
    1154            0 :     uint16_t endpointIndex = emberAfIndexFromEndpoint(endpoint);
    1155            0 :     if (endpointIndex == 0xFFFF)
    1156              :     {
    1157            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
    1158              :     }
    1159              : 
    1160            0 :     emAfEndpoints[endpointIndex].deviceTypeList = deviceTypeList;
    1161            0 :     return CHIP_NO_ERROR;
    1162              : }
    1163              : 
    1164            0 : CHIP_ERROR SetTagList(EndpointId endpoint, Span<const Clusters::Descriptor::Structs::SemanticTagStruct::Type> tagList)
    1165              : {
    1166            0 :     uint16_t endpointIndex = emberAfIndexFromEndpoint(endpoint);
    1167            0 :     if (endpointIndex == 0xFFFF)
    1168              :     {
    1169            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
    1170              :     }
    1171              : 
    1172            0 :     emAfEndpoints[endpointIndex].tagList = tagList;
    1173            0 :     return CHIP_NO_ERROR;
    1174              : }
    1175              : 
    1176              : // Returns the cluster of Nth server or client cluster,
    1177              : // depending on server toggle.
    1178            0 : const EmberAfCluster * emberAfGetNthCluster(EndpointId endpoint, uint8_t n, bool server)
    1179              : {
    1180            0 :     uint16_t index = emberAfIndexFromEndpoint(endpoint);
    1181            0 :     if (index == kEmberInvalidEndpointIndex)
    1182              :     {
    1183            0 :         return nullptr;
    1184              :     }
    1185              : 
    1186            0 :     const EmberAfEndpointType * endpointType = emAfEndpoints[index].endpointType;
    1187            0 :     const EmberAfClusterMask cluster_mask    = server ? MATTER_CLUSTER_FLAG_SERVER : MATTER_CLUSTER_FLAG_CLIENT;
    1188            0 :     const uint8_t clusterCount               = endpointType->clusterCount;
    1189              : 
    1190            0 :     uint8_t c = 0;
    1191            0 :     for (uint8_t i = 0; i < clusterCount; i++)
    1192              :     {
    1193            0 :         const EmberAfCluster * cluster = &(endpointType->cluster[i]);
    1194              : 
    1195            0 :         if ((cluster->mask & cluster_mask) == 0)
    1196              :         {
    1197            0 :             continue;
    1198              :         }
    1199              : 
    1200            0 :         if (c == n)
    1201              :         {
    1202            0 :             return cluster;
    1203              :         }
    1204              : 
    1205            0 :         c++;
    1206              :     }
    1207            0 :     return nullptr;
    1208              : }
    1209              : 
    1210              : // Returns the cluster id of Nth server or client cluster,
    1211              : // depending on server toggle.
    1212              : // Returns Optional<ClusterId>::Missing() if cluster does not exist.
    1213            0 : Optional<ClusterId> emberAfGetNthClusterId(EndpointId endpoint, uint8_t n, bool server)
    1214              : {
    1215            0 :     const EmberAfCluster * cluster = emberAfGetNthCluster(endpoint, n, server);
    1216            0 :     if (cluster == nullptr)
    1217              :     {
    1218            0 :         return Optional<ClusterId>::Missing();
    1219              :     }
    1220            0 :     return Optional<ClusterId>(cluster->clusterId);
    1221              : }
    1222              : 
    1223              : // Returns number of clusters put into the passed cluster list
    1224              : // for the given endpoint and client/server polarity
    1225            0 : uint8_t emberAfGetClustersFromEndpoint(EndpointId endpoint, ClusterId * clusterList, uint8_t listLen, bool server)
    1226              : {
    1227            0 :     uint8_t clusterCount = emberAfClusterCount(endpoint, server);
    1228              :     uint8_t i;
    1229              :     const EmberAfCluster * cluster;
    1230            0 :     if (clusterCount > listLen)
    1231              :     {
    1232            0 :         clusterCount = listLen;
    1233              :     }
    1234            0 :     for (i = 0; i < clusterCount; i++)
    1235              :     {
    1236            0 :         cluster        = emberAfGetNthCluster(endpoint, i, server);
    1237            0 :         clusterList[i] = (cluster == nullptr ? kEmberInvalidEndpointIndex : cluster->clusterId);
    1238              :     }
    1239            0 :     return clusterCount;
    1240              : }
    1241              : 
    1242           30 : void emberAfInitializeAttributes(EndpointId endpoint)
    1243              : {
    1244           30 :     emAfLoadAttributeDefaults(endpoint);
    1245           30 : }
    1246              : 
    1247           30 : void emAfLoadAttributeDefaults(EndpointId endpoint, Optional<ClusterId> clusterId)
    1248              : {
    1249              :     uint16_t ep;
    1250              :     uint8_t clusterI;
    1251              :     uint16_t attr;
    1252              :     uint8_t * ptr;
    1253           30 :     uint16_t epCount = emberAfEndpointCount();
    1254              :     uint8_t attrData[ATTRIBUTE_LARGEST];
    1255           30 :     auto * attrStorage = GetAttributePersistenceProvider();
    1256              :     // Don't check whether we actually have an attrStorage here, because it's OK
    1257              :     // to have one if none of our attributes have NVM storage.
    1258              : 
    1259           60 :     for (ep = 0; ep < epCount; ep++)
    1260              :     {
    1261              :         EmberAfDefinedEndpoint * de;
    1262           30 :         if (endpoint != kInvalidEndpointId)
    1263              :         {
    1264            0 :             ep = emberAfIndexFromEndpoint(endpoint);
    1265            0 :             if (ep == kEmberInvalidEndpointIndex)
    1266              :             {
    1267            0 :                 return;
    1268              :             }
    1269              :         }
    1270           30 :         de = &(emAfEndpoints[ep]);
    1271              : 
    1272         3480 :         for (clusterI = 0; clusterI < de->endpointType->clusterCount; clusterI++)
    1273              :         {
    1274         3450 :             const EmberAfCluster * cluster = &(de->endpointType->cluster[clusterI]);
    1275         3450 :             if (clusterId.HasValue())
    1276              :             {
    1277            0 :                 if (clusterId.Value() != cluster->clusterId)
    1278              :                 {
    1279            0 :                     continue;
    1280              :                 }
    1281              :             }
    1282              : 
    1283              :             // when the attributeCount is high, the loop takes too long to run and a
    1284              :             // watchdog kicks in causing a reset. As a workaround, we'll
    1285              :             // conditionally manually reset the watchdog. 300 sounds like a good
    1286              :             // magic number for now.
    1287         3450 :             if (cluster->attributeCount > 300)
    1288              :             {
    1289              :                 // halResetWatchdog();
    1290              :             }
    1291         3450 :             for (attr = 0; attr < cluster->attributeCount; attr++)
    1292              :             {
    1293            0 :                 const EmberAfAttributeMetadata * am = &(cluster->attributes[attr]);
    1294            0 :                 ptr                                 = nullptr; // Will get set to the value to write, as needed.
    1295              : 
    1296              :                 // First check for a persisted value.
    1297            0 :                 if (am->IsAutomaticallyPersisted())
    1298              :                 {
    1299            0 :                     VerifyOrDieWithMsg(attrStorage != nullptr, Zcl, "Attribute persistence needs a persistence provider");
    1300            0 :                     MutableByteSpan bytes(attrData);
    1301              :                     CHIP_ERROR err =
    1302            0 :                         attrStorage->ReadValue(ConcreteAttributePath(de->endpoint, cluster->clusterId, am->attributeId), bytes);
    1303            0 :                     if (err == CHIP_NO_ERROR)
    1304              :                     {
    1305            0 :                         err = ValidateDataContent(bytes, am);
    1306              :                     }
    1307              : 
    1308            0 :                     if (err == CHIP_NO_ERROR)
    1309              :                     {
    1310            0 :                         ptr = attrData;
    1311              :                     }
    1312              :                     else
    1313              :                     {
    1314            0 :                         ChipLogDetail(
    1315              :                             DataManagement,
    1316              :                             "Failed to read stored attribute (%u, " ChipLogFormatMEI ", " ChipLogFormatMEI ": %" CHIP_ERROR_FORMAT,
    1317              :                             de->endpoint, ChipLogValueMEI(cluster->clusterId), ChipLogValueMEI(am->attributeId), err.Format());
    1318              :                         // Just fall back to default value.
    1319              :                     }
    1320              :                 }
    1321              : 
    1322            0 :                 if (!am->IsExternal())
    1323              :                 {
    1324              :                     EmberAfAttributeSearchRecord record;
    1325            0 :                     record.endpoint    = de->endpoint;
    1326            0 :                     record.clusterId   = cluster->clusterId;
    1327            0 :                     record.attributeId = am->attributeId;
    1328              : 
    1329            0 :                     if (ptr == nullptr)
    1330              :                     {
    1331            0 :                         size_t defaultValueSizeForBigEndianNudger = 0;
    1332              :                         // Bypasses compiler warning about unused variable for little endian platforms.
    1333              :                         (void) defaultValueSizeForBigEndianNudger;
    1334            0 :                         if ((am->mask & MATTER_ATTRIBUTE_FLAG_MIN_MAX) != 0U)
    1335              :                         {
    1336              :                             // This is intentionally 2 and not 4 bytes since defaultValue in min/max
    1337              :                             // attributes is still uint16_t.
    1338            0 :                             if (emberAfAttributeSize(am) <= 2)
    1339              :                             {
    1340              :                                 static_assert(sizeof(am->defaultValue.ptrToMinMaxValue->defaultValue.defaultValue) == 2,
    1341              :                                               "if statement relies on size of max/min defaultValue being 2");
    1342            0 :                                 ptr = (uint8_t *) &(am->defaultValue.ptrToMinMaxValue->defaultValue.defaultValue);
    1343            0 :                                 defaultValueSizeForBigEndianNudger =
    1344              :                                     sizeof(am->defaultValue.ptrToMinMaxValue->defaultValue.defaultValue);
    1345              :                             }
    1346              :                             else
    1347              :                             {
    1348            0 :                                 ptr = (uint8_t *) am->defaultValue.ptrToMinMaxValue->defaultValue.ptrToDefaultValue;
    1349              :                             }
    1350              :                         }
    1351              :                         else
    1352              :                         {
    1353            0 :                             if ((emberAfAttributeSize(am) <= 4) && !emberAfIsStringAttributeType(am->attributeType))
    1354              :                             {
    1355            0 :                                 ptr                                = (uint8_t *) &(am->defaultValue.defaultValue);
    1356            0 :                                 defaultValueSizeForBigEndianNudger = sizeof(am->defaultValue.defaultValue);
    1357              :                             }
    1358              :                             else
    1359              :                             {
    1360            0 :                                 ptr = (uint8_t *) am->defaultValue.ptrToDefaultValue;
    1361              :                             }
    1362              :                         }
    1363              :                         // At this point, ptr either points to a default value, or is NULL, in which case
    1364              :                         // it should be treated as if it is pointing to an array of all zeroes.
    1365              : 
    1366              : #if (CHIP_CONFIG_BIG_ENDIAN_TARGET)
    1367              :                         // The default values for attributes that are less than or equal to
    1368              :                         // defaultValueSizeForBigEndianNudger in bytes are stored in an
    1369              :                         // uint32_t.  On big-endian platforms, a pointer to the default value
    1370              :                         // of size less than defaultValueSizeForBigEndianNudger will point to the wrong
    1371              :                         // byte.  So, for those cases, nudge the pointer forward so it points
    1372              :                         // to the correct byte.
    1373              :                         if (emberAfAttributeSize(am) < defaultValueSizeForBigEndianNudger && ptr != NULL)
    1374              :                         {
    1375              :                             ptr += (defaultValueSizeForBigEndianNudger - emberAfAttributeSize(am));
    1376              :                         }
    1377              : #endif // BIGENDIAN
    1378              :                     }
    1379              : 
    1380            0 :                     emAfReadOrWriteAttribute(&record,
    1381              :                                              nullptr, // metadata - unused
    1382              :                                              ptr,
    1383              :                                              0,     // buffer size - unused
    1384              :                                              true); // write?
    1385              :                 }
    1386              :             }
    1387              :         }
    1388           30 :         if (endpoint != kInvalidEndpointId)
    1389              :         {
    1390            0 :             break;
    1391              :         }
    1392              :     }
    1393              : }
    1394              : 
    1395              : // 'data' argument may be null, since we changed the ptrToDefaultValue
    1396              : // to be null instead of pointing to all zeroes.
    1397              : // This function has to be able to deal with that.
    1398            0 : void emAfSaveAttributeToStorageIfNeeded(uint8_t * data, EndpointId endpoint, ClusterId clusterId,
    1399              :                                         const EmberAfAttributeMetadata * metadata)
    1400              : {
    1401              :     // Get out of here if this attribute isn't marked non-volatile.
    1402            0 :     if (!metadata->IsAutomaticallyPersisted())
    1403              :     {
    1404            0 :         return;
    1405              :     }
    1406              : 
    1407              :     // TODO: Maybe we should have a separate constant for the size of the
    1408              :     // largest non-volatile attribute?
    1409            0 :     uint8_t allZeroData[ATTRIBUTE_LARGEST] = { 0 };
    1410            0 :     if (data == nullptr)
    1411              :     {
    1412            0 :         data = allZeroData;
    1413              :     }
    1414              : 
    1415              :     size_t dataSize;
    1416            0 :     EmberAfAttributeType type = metadata->attributeType;
    1417            0 :     if (emberAfIsStringAttributeType(type))
    1418              :     {
    1419            0 :         dataSize = emberAfStringLength(data) + 1;
    1420              :     }
    1421            0 :     else if (emberAfIsLongStringAttributeType(type))
    1422              :     {
    1423            0 :         dataSize = emberAfLongStringLength(data) + 2;
    1424              :     }
    1425              :     else
    1426              :     {
    1427            0 :         dataSize = metadata->size;
    1428              :     }
    1429              : 
    1430            0 :     auto * attrStorage = GetAttributePersistenceProvider();
    1431            0 :     if (attrStorage)
    1432              :     {
    1433            0 :         TEMPORARY_RETURN_IGNORED attrStorage->WriteValue(ConcreteAttributePath(endpoint, clusterId, metadata->attributeId),
    1434            0 :                                                          ByteSpan(data, dataSize));
    1435              :     }
    1436              :     else
    1437              :     {
    1438            0 :         ChipLogProgress(DataManagement, "Can't store attribute value: no persistence provider");
    1439              :     }
    1440              : }
    1441              : 
    1442              : // This function returns the actual function point from the array,
    1443              : // iterating over the function bits.
    1444         3519 : EmberAfGenericClusterFunction emberAfFindClusterFunction(const EmberAfCluster * cluster, EmberAfClusterMask functionMask)
    1445              : {
    1446         3519 :     EmberAfClusterMask mask = 0x01;
    1447         3519 :     uint8_t functionIndex   = 0;
    1448              : 
    1449         3519 :     if ((cluster->mask & functionMask) == 0)
    1450              :     {
    1451         3519 :         return nullptr;
    1452              :     }
    1453              : 
    1454            0 :     while (mask < functionMask)
    1455              :     {
    1456            0 :         if ((cluster->mask & mask) != 0)
    1457              :         {
    1458            0 :             functionIndex++;
    1459              :         }
    1460            0 :         mask = static_cast<EmberAfClusterMask>(mask << 1);
    1461              :     }
    1462            0 :     return cluster->functions[functionIndex];
    1463              : }
    1464              : 
    1465              : namespace chip {
    1466              : namespace app {
    1467              : 
    1468            0 : CHIP_ERROR SetParentEndpointForEndpoint(EndpointId childEndpoint, EndpointId parentEndpoint)
    1469              : {
    1470            0 :     uint16_t childIndex  = emberAfIndexFromEndpoint(childEndpoint);
    1471            0 :     uint16_t parentIndex = emberAfIndexFromEndpoint(parentEndpoint);
    1472              : 
    1473            0 :     if (childIndex == kEmberInvalidEndpointIndex || parentIndex == kEmberInvalidEndpointIndex)
    1474              :     {
    1475            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
    1476              :     }
    1477            0 :     emAfEndpoints[childIndex].parentEndpointId = parentEndpoint;
    1478            0 :     return CHIP_NO_ERROR;
    1479              : }
    1480              : 
    1481            0 : CHIP_ERROR SetFlatCompositionForEndpoint(EndpointId endpoint)
    1482              : {
    1483            0 :     uint16_t index = emberAfIndexFromEndpoint(endpoint);
    1484            0 :     if (index == kEmberInvalidEndpointIndex)
    1485              :     {
    1486            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
    1487              :     }
    1488            0 :     emAfEndpoints[index].bitmask.Set(EmberAfEndpointOptions::isFlatComposition);
    1489            0 :     return CHIP_NO_ERROR;
    1490              : }
    1491              : 
    1492            0 : CHIP_ERROR SetTreeCompositionForEndpoint(EndpointId endpoint)
    1493              : {
    1494            0 :     uint16_t index = emberAfIndexFromEndpoint(endpoint);
    1495            0 :     if (index == kEmberInvalidEndpointIndex)
    1496              :     {
    1497            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
    1498              :     }
    1499            0 :     emAfEndpoints[index].bitmask.Clear(EmberAfEndpointOptions::isFlatComposition);
    1500            0 :     return CHIP_NO_ERROR;
    1501              : }
    1502              : 
    1503            0 : bool IsFlatCompositionForEndpoint(EndpointId endpoint)
    1504              : {
    1505            0 :     uint16_t index = emberAfIndexFromEndpoint(endpoint);
    1506            0 :     if (index == kEmberInvalidEndpointIndex)
    1507              :     {
    1508            0 :         return false;
    1509              :     }
    1510            0 :     return emAfEndpoints[index].bitmask.Has(EmberAfEndpointOptions::isFlatComposition);
    1511              : }
    1512              : 
    1513            0 : bool IsTreeCompositionForEndpoint(EndpointId endpoint)
    1514              : {
    1515            0 :     uint16_t index = emberAfIndexFromEndpoint(endpoint);
    1516            0 :     if (index == kEmberInvalidEndpointIndex)
    1517              :     {
    1518            0 :         return false;
    1519              :     }
    1520            0 :     return !emAfEndpoints[index].bitmask.Has(EmberAfEndpointOptions::isFlatComposition);
    1521              : }
    1522              : 
    1523         2917 : EndpointComposition GetCompositionForEndpointIndex(uint16_t endpointIndex)
    1524              : {
    1525         2917 :     VerifyOrReturnValue(endpointIndex < MATTER_ARRAY_SIZE(emAfEndpoints), EndpointComposition::kInvalid);
    1526         2917 :     if (emAfEndpoints[endpointIndex].bitmask.Has(EmberAfEndpointOptions::isFlatComposition))
    1527              :     {
    1528         1438 :         return EndpointComposition::kFullFamily;
    1529              :     }
    1530         1479 :     return EndpointComposition::kTree;
    1531              : }
    1532              : 
    1533              : } // namespace app
    1534              : } // namespace chip
    1535              : 
    1536            0 : uint16_t emberAfGetServerAttributeCount(EndpointId endpoint, ClusterId cluster)
    1537              : {
    1538            0 :     const EmberAfCluster * clusterObj = emberAfFindServerCluster(endpoint, cluster);
    1539            0 :     VerifyOrReturnError(clusterObj != nullptr, 0);
    1540            0 :     return clusterObj->attributeCount;
    1541              : }
    1542              : 
    1543            0 : uint16_t emberAfGetServerAttributeIndexByAttributeId(EndpointId endpoint, ClusterId cluster, AttributeId attributeId)
    1544              : {
    1545            0 :     const EmberAfCluster * clusterObj = emberAfFindServerCluster(endpoint, cluster);
    1546            0 :     VerifyOrReturnError(clusterObj != nullptr, UINT16_MAX);
    1547              : 
    1548            0 :     for (uint16_t i = 0; i < clusterObj->attributeCount; i++)
    1549              :     {
    1550            0 :         if (clusterObj->attributes[i].attributeId == attributeId)
    1551              :         {
    1552            0 :             return i;
    1553              :         }
    1554              :     }
    1555            0 :     return UINT16_MAX;
    1556              : }
    1557              : 
    1558            0 : Optional<AttributeId> emberAfGetServerAttributeIdByIndex(EndpointId endpoint, ClusterId cluster, uint16_t attributeIndex)
    1559              : {
    1560            0 :     const EmberAfCluster * clusterObj = emberAfFindServerCluster(endpoint, cluster);
    1561            0 :     if (clusterObj == nullptr || clusterObj->attributeCount <= attributeIndex)
    1562              :     {
    1563            0 :         return Optional<AttributeId>::Missing();
    1564              :     }
    1565            0 :     return Optional<AttributeId>(clusterObj->attributes[attributeIndex].attributeId);
    1566              : }
    1567              : 
    1568         9516 : DataVersion * emberAfDataVersionStorage(const ConcreteClusterPath & aConcreteClusterPath)
    1569              : {
    1570         9516 :     uint16_t index = emberAfIndexFromEndpoint(aConcreteClusterPath.mEndpointId);
    1571         9516 :     if (index == kEmberInvalidEndpointIndex)
    1572              :     {
    1573              :         // Unknown endpoint.
    1574           47 :         return nullptr;
    1575              :     }
    1576         9469 :     const EmberAfDefinedEndpoint & ep = emAfEndpoints[index];
    1577         9469 :     if (!ep.dataVersions)
    1578              :     {
    1579              :         // No storage provided.
    1580            0 :         return nullptr;
    1581              :     }
    1582              : 
    1583              :     // This does a second walk over endpoints to find the right one, but
    1584              :     // probably worth it to avoid duplicating code.
    1585              :     auto clusterIndex =
    1586         9469 :         emberAfClusterIndex(aConcreteClusterPath.mEndpointId, aConcreteClusterPath.mClusterId, MATTER_CLUSTER_FLAG_SERVER);
    1587         9469 :     if (clusterIndex == 0xFF)
    1588              :     {
    1589              :         // No such cluster on this endpoint.
    1590           10 :         return nullptr;
    1591              :     }
    1592              : 
    1593         9459 :     return ep.dataVersions + clusterIndex;
    1594              : }
    1595              : 
    1596           86 : DataModel::ProviderChangeListener * emberAfGlobalInteractionModelAttributesChangedListener()
    1597              : {
    1598           86 :     return &InteractionModelEngine::GetInstance()->GetReportingEngine();
    1599              : }
    1600              : 
    1601         5203 : void emberAfAttributeChanged(EndpointId endpoint, ClusterId clusterId, AttributeId attributeId,
    1602              :                              DataModel::ProviderChangeListener * listener)
    1603              : {
    1604              :     // Increase cluster data path
    1605         5203 :     DataVersion * version = emberAfDataVersionStorage(ConcreteClusterPath(endpoint, clusterId));
    1606         5203 :     if (version == nullptr)
    1607              :     {
    1608           57 :         ChipLogError(DataManagement, "Endpoint %x, Cluster " ChipLogFormatMEI " not found in IncreaseClusterDataVersion!", endpoint,
    1609              :                      ChipLogValueMEI(clusterId));
    1610              :     }
    1611              :     else
    1612              :     {
    1613         5146 :         (*(version))++;
    1614         5146 :         ChipLogDetail(DataManagement, "Endpoint %x, Cluster " ChipLogFormatMEI " update version to %" PRIx32, endpoint,
    1615              :                       ChipLogValueMEI(clusterId), *(version));
    1616              :     }
    1617              : 
    1618         5203 :     listener->MarkDirty(AttributePathParams(endpoint, clusterId, attributeId));
    1619         5203 : }
    1620              : 
    1621           29 : void emberAfEndpointChanged(EndpointId endpoint, DataModel::ProviderChangeListener * listener)
    1622              : {
    1623           29 :     listener->MarkDirty(AttributePathParams(endpoint));
    1624           29 : }
        

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