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MTRBaseDevice.mm
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/**
*
* Copyright (c) 2020-2023 Project CHIP Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <Matter/Matter.h>
#import "MTRAttributeTLVValueDecoder_Internal.h"
#import "MTRBaseDevice_Internal.h"
#import "MTRBaseSubscriptionCallback.h"
#import "MTRCallbackBridgeBase.h"
#import "MTRCluster.h"
#import "MTRClusterStateCacheContainer_Internal.h"
#import "MTRCluster_Internal.h"
#import "MTRDeviceDataValidation.h"
#import "MTRDevice_Internal.h"
#import "MTRError_Internal.h"
#import "MTREventTLVValueDecoder_Internal.h"
#import "MTRFramework.h"
#import "MTRLogging_Internal.h"
#import "MTRMetricKeys.h"
#import "MTRSetupPayload_Internal.h"
#import "MTRUtilities.h"
#import "NSDataSpanConversion.h"
#import "NSStringSpanConversion.h"
#import "zap-generated/MTRCommandPayloads_Internal.h"
#import "app/ConcreteAttributePath.h"
#import "app/ConcreteCommandPath.h"
#import "app/ConcreteEventPath.h"
#import "app/StatusResponse.h"
#import "lib/core/CHIPError.h"
#import "lib/core/DataModelTypes.h"
#import <app/AttributePathParams.h>
#import <app/BufferedReadCallback.h>
#import <app/ClusterStateCache.h>
#import <app/InteractionModelEngine.h>
#import <app/ReadClient.h>
#import <app/data-model/List.h>
#import <controller/CommissioningWindowOpener.h>
#import <controller/ReadInteraction.h>
#import <controller/WriteInteraction.h>
#import <crypto/CHIPCryptoPAL.h>
#import <setup_payload/SetupPayload.h>
#import <system/SystemClock.h>
#import <memory>
using namespace chip;
using namespace chip::app;
using namespace chip::Protocols::InteractionModel;
using chip::Optional;
using chip::SessionHandle;
using chip::Messaging::ExchangeManager;
using namespace chip::Tracing::DarwinFramework;
NSString * const MTRAttributePathKey = @"attributePath";
NSString * const MTRCommandPathKey = @"commandPath";
NSString * const MTREventPathKey = @"eventPath";
NSString * const MTRDataKey = @"data";
NSString * const MTRErrorKey = @"error";
NSString * const MTRTypeKey = @"type";
NSString * const MTRValueKey = @"value";
NSString * const MTRContextTagKey = @"contextTag";
NSString * const MTRSignedIntegerValueType = @"SignedInteger";
NSString * const MTRUnsignedIntegerValueType = @"UnsignedInteger";
NSString * const MTRBooleanValueType = @"Boolean";
NSString * const MTRUTF8StringValueType = @"UTF8String";
NSString * const MTROctetStringValueType = @"OctetString";
NSString * const MTRFloatValueType = @"Float";
NSString * const MTRDoubleValueType = @"Double";
NSString * const MTRNullValueType = @"Null";
NSString * const MTRStructureValueType = @"Structure";
NSString * const MTRArrayValueType = @"Array";
NSString * const MTREventNumberKey = @"eventNumber";
NSString * const MTREventPriorityKey = @"eventPriority";
NSString * const MTREventTimeTypeKey = @"eventTimeType";
NSString * const MTREventSystemUpTimeKey = @"eventSystemUpTime";
NSString * const MTREventTimestampDateKey = @"eventTimestampDate";
NSString * const MTREventIsHistoricalKey = @"eventIsHistorical";
class MTRDataValueDictionaryCallbackBridge;
class MTRDataValueDictionaryDecodableType;
template <typename DecodableValueType>
class BufferedReadClientCallback;
@interface MTRReadClientContainer : NSObject
@property (nonatomic, readwrite) app::ReadClient * readClientPtr;
@property (nonatomic, readwrite) BufferedReadClientCallback<MTRDataValueDictionaryDecodableType> * callback;
@property (nonatomic, readwrite) app::AttributePathParams * pathParams;
@property (nonatomic, readwrite) app::EventPathParams * eventPathParams;
@property (nonatomic, readwrite) uint64_t deviceID;
- (void)cleanup;
- (void)onDone;
@end
static NSMutableDictionary<NSNumber *, NSMutableArray<MTRReadClientContainer *> *> * readClientContainers;
static NSLock * readClientContainersLock;
static void InitializeReadClientContainers()
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
readClientContainers = [NSMutableDictionary dictionary];
readClientContainersLock = [[NSLock alloc] init];
});
}
static void AddReadClientContainer(uint64_t deviceId, MTRReadClientContainer * container)
{
InitializeReadClientContainers();
NSNumber * key = [NSNumber numberWithUnsignedLongLong:deviceId];
[readClientContainersLock lock];
if (!readClientContainers[key]) {
readClientContainers[key] = [NSMutableArray array];
}
[readClientContainers[key] addObject:container];
[readClientContainersLock unlock];
}
static void ReinstateReadClientList(NSMutableArray<MTRReadClientContainer *> * readClientList, NSNumber * key,
dispatch_queue_t queue, dispatch_block_t _Nullable completion)
{
[readClientContainersLock lock];
auto existingList = readClientContainers[key];
if (existingList) {
[existingList addObjectsFromArray:readClientList];
} else {
readClientContainers[key] = readClientList;
}
[readClientContainersLock unlock];
if (completion) {
dispatch_async(queue, completion);
}
}
static void PurgeReadClientContainers(
MTRDeviceController * controller, uint64_t deviceId, dispatch_queue_t queue, void (^_Nullable completion)(void))
{
InitializeReadClientContainers();
NSMutableArray<MTRReadClientContainer *> * listToDelete;
NSNumber * key = [NSNumber numberWithUnsignedLongLong:deviceId];
[readClientContainersLock lock];
listToDelete = readClientContainers[key];
[readClientContainers removeObjectForKey:key];
[readClientContainersLock unlock];
// Destroy read clients in the work queue
[controller
asyncDispatchToMatterQueue:^() {
for (MTRReadClientContainer * container in listToDelete) {
[container cleanup];
}
[listToDelete removeAllObjects];
if (completion) {
dispatch_async(queue, completion);
}
}
errorHandler:^(NSError * error) {
// Can't delete things. Just put them back, and hope we
// can delete them later.
ReinstateReadClientList(listToDelete, key, queue, completion);
}];
}
static void PurgeCompletedReadClientContainers(uint64_t deviceId)
{
InitializeReadClientContainers();
NSNumber * key = [NSNumber numberWithUnsignedLongLong:deviceId];
[readClientContainersLock lock];
NSMutableArray<MTRReadClientContainer *> * array = readClientContainers[key];
NSUInteger i = 0;
while (i < [array count]) {
if (array[i].readClientPtr == nullptr) {
[array removeObjectAtIndex:i];
continue;
}
i++;
}
[readClientContainersLock unlock];
}
static bool CheckMemberOfType(NSDictionary<NSString *, id> * responseValue, NSString * memberName, Class expectedClass,
NSString * errorMessage, NSError * __autoreleasing * error);
static void LogStringAndReturnError(NSString * errorStr, CHIP_ERROR errorCode, NSError * __autoreleasing * error);
static void LogStringAndReturnError(NSString * errorStr, MTRErrorCode errorCode, NSError * __autoreleasing * error);
@implementation MTRReadClientContainer
- (void)cleanup
{
if (_readClientPtr) {
Platform::Delete(_readClientPtr);
_readClientPtr = nullptr;
}
if (_pathParams) {
static_assert(std::is_trivially_destructible<AttributePathParams>::value, "AttributePathParams destructors won't get run");
Platform::MemoryFree(_pathParams);
_pathParams = nullptr;
}
if (_eventPathParams) {
static_assert(std::is_trivially_destructible<EventPathParams>::value, "EventPathParams destructors won't get run");
Platform::MemoryFree(_eventPathParams);
_eventPathParams = nullptr;
}
if (_callback) {
Platform::Delete(_callback);
_callback = nullptr;
}
}
- (void)onDone
{
[self cleanup];
PurgeCompletedReadClientContainers(_deviceID);
}
@end
@implementation MTRBaseDevice
- (instancetype)initWithPASEDevice:(chip::DeviceProxy *)device controller:(MTRDeviceController *)controller
{
if (self = [super init]) {
_isPASEDevice = YES;
_nodeID = device->GetDeviceId();
_deviceController = controller;
}
return self;
}
- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController *)controller
{
if (self = [super init]) {
_isPASEDevice = NO;
_nodeID = nodeID.unsignedLongLongValue;
_deviceController = controller;
}
return self;
}
+ (MTRBaseDevice *)deviceWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController *)controller
{
// Indirect through the controller to give it a chance to create an
// MTRBaseDeviceOverXPC instead of just an MTRBaseDevice.
return [controller baseDeviceForNodeID:nodeID];
}
- (nullable MTRDeviceController_Concrete *)concreteController
{
auto * controller = self.deviceController;
if ([controller isKindOfClass:MTRDeviceController_Concrete.class]) {
return static_cast<MTRDeviceController_Concrete *>(controller);
}
return nil;
}
- (MTRTransportType)sessionTransportType
{
auto * concreteController = self.concreteController;
if (concreteController == nil) {
MTR_LOG_ERROR("Unable to determine session transport type for MTRBaseDevice created with an XPC controller");
return MTRTransportTypeUndefined;
}
return [concreteController sessionTransportTypeForDevice:self];
}
- (void)invalidateCASESession
{
if (self.isPASEDevice) {
return;
}
auto * concreteController = self.concreteController;
if (concreteController == nil) {
// Nothing we can do here.
MTR_LOG_ERROR("Unable invalidate CASE session for MTRBaseDevice created with an XPC controller");
return;
}
[concreteController invalidateCASESessionForNode:@(self.nodeID)];
}
namespace {
class SubscriptionCallback final : public MTRBaseSubscriptionCallback {
public:
SubscriptionCallback(DataReportCallback attributeReportCallback, DataReportCallback eventReportCallback,
ErrorCallback errorCallback, MTRDeviceResubscriptionScheduledHandler _Nullable resubscriptionScheduledHandler,
MTRSubscriptionEstablishedHandler _Nullable subscriptionEstablishedHandler, OnDoneHandler _Nullable onDoneHandler)
: MTRBaseSubscriptionCallback(attributeReportCallback, eventReportCallback, errorCallback, resubscriptionScheduledHandler,
subscriptionEstablishedHandler, onDoneHandler)
{
}
void OnEventData(const EventHeader & aEventHeader, TLV::TLVReader * apData, const StatusIB * apStatus) override;
void OnAttributeData(const ConcreteDataAttributePath & aPath, TLV::TLVReader * apData, const StatusIB & aStatus) override;
};
} // anonymous namespace
- (void)subscribeWithQueue:(dispatch_queue_t)queue
params:(MTRSubscribeParams *)params
clusterStateCacheContainer:(MTRClusterStateCacheContainer * _Nullable)clusterStateCacheContainer
attributeReportHandler:(MTRDeviceReportHandler _Nullable)attributeReportHandler
eventReportHandler:(MTRDeviceReportHandler _Nullable)eventReportHandler
errorHandler:(void (^)(NSError * error))errorHandler
subscriptionEstablished:(MTRSubscriptionEstablishedHandler _Nullable)subscriptionEstablished
resubscriptionScheduled:(MTRDeviceResubscriptionScheduledHandler _Nullable)resubscriptionScheduled
{
if (self.isPASEDevice) {
// We don't support subscriptions over PASE.
dispatch_async(queue, ^{
errorHandler([MTRError errorForCHIPErrorCode:CHIP_ERROR_INCORRECT_STATE]);
});
return;
}
auto * concreteController = self.concreteController;
if (concreteController == nil) {
// No subscriptions (or really any MTRBaseDevice use) with XPC controllers.
MTR_LOG_ERROR("Unable to create subscription for MTRBaseDevice created with an XPC controller");
dispatch_async(queue, ^{
errorHandler([MTRError errorForCHIPErrorCode:CHIP_ERROR_INCORRECT_STATE]);
});
return;
}
// Copy params before going async.
params = [params copy];
[concreteController getSessionForNode:self.nodeID
completion:^(ExchangeManager * _Nullable exchangeManager, const Optional<SessionHandle> & session,
NSError * _Nullable error, NSNumber * _Nullable retryDelay) {
if (error != nil) {
dispatch_async(queue, ^{
errorHandler(error);
});
return;
}
// Wildcard endpoint, cluster, attribute, event.
auto attributePath = std::make_unique<AttributePathParams>();
auto eventPath = std::make_unique<EventPathParams>();
eventPath->mIsUrgentEvent = params.reportEventsUrgently;
ReadPrepareParams readParams(session.Value());
[params toReadPrepareParams:readParams];
readParams.mpAttributePathParamsList = attributePath.get();
readParams.mAttributePathParamsListSize = 1;
readParams.mpEventPathParamsList = eventPath.get();
readParams.mEventPathParamsListSize = 1;
std::unique_ptr<ClusterStateCache> clusterStateCache;
ReadClient::Callback * callbackForReadClient = nullptr;
OnDoneHandler onDoneHandler = nil;
if (clusterStateCacheContainer) {
__weak MTRClusterStateCacheContainer * weakPtr = clusterStateCacheContainer;
onDoneHandler = ^{
// This, like all manipulation of cppClusterStateCache, needs to run on the Matter
// queue.
MTRClusterStateCacheContainer * container = weakPtr;
if (container) {
container.cppClusterStateCache = nullptr;
container.baseDevice = nil;
}
};
}
auto callback = std::make_unique<SubscriptionCallback>(
^(NSArray * value) {
dispatch_async(queue, ^{
if (attributeReportHandler != nil) {
attributeReportHandler(value);
}
});
},
^(NSArray * value) {
dispatch_async(queue, ^{
if (eventReportHandler != nil) {
eventReportHandler(value);
}
});
},
^(NSError * error) {
dispatch_async(queue, ^{
errorHandler(error);
});
},
^(NSError * error, NSNumber * resubscriptionDelay) {
dispatch_async(queue, ^{
if (resubscriptionScheduled != nil) {
resubscriptionScheduled(error, resubscriptionDelay);
}
});
},
^(void) {
dispatch_async(queue, ^{
if (subscriptionEstablished != nil) {
subscriptionEstablished();
}
});
},
onDoneHandler);
if (clusterStateCacheContainer) {
clusterStateCache = std::make_unique<ClusterStateCache>(*callback.get());
callbackForReadClient = &clusterStateCache->GetBufferedCallback();
} else {
callbackForReadClient = &callback->GetBufferedCallback();
}
auto readClient = std::make_unique<ReadClient>(InteractionModelEngine::GetInstance(),
exchangeManager, *callbackForReadClient, ReadClient::InteractionType::Subscribe);
CHIP_ERROR err;
if (!params.resubscribeAutomatically) {
err = readClient->SendRequest(readParams);
} else {
// SendAutoResubscribeRequest cleans up the params, even on failure.
attributePath.release();
eventPath.release();
err = readClient->SendAutoResubscribeRequest(std::move(readParams));
}
if (err != CHIP_NO_ERROR) {
dispatch_async(queue, ^{
errorHandler([MTRError errorForCHIPErrorCode:err]);
});
return;
}
if (clusterStateCacheContainer) {
clusterStateCacheContainer.cppClusterStateCache = clusterStateCache.get();
// ClusterStateCache will be deleted when OnDone is called.
callback->AdoptClusterStateCache(std::move(clusterStateCache));
clusterStateCacheContainer.baseDevice = self;
}
// Callback and ReadClient will be deleted when OnDone is called.
callback->AdoptReadClient(std::move(readClient));
callback.release();
}];
}
static NSDictionary<NSString *, id> * _MakeDataValueDictionary(NSString * type, id _Nullable value, NSNumber * _Nullable dataVersion)
{
if (value && dataVersion) {
return @ { MTRTypeKey : type, MTRValueKey : value, MTRDataVersionKey : dataVersion };
} else if (value) {
return @ { MTRTypeKey : type, MTRValueKey : value };
} else if (dataVersion) {
return @ { MTRTypeKey : type, MTRDataVersionKey : dataVersion };
} else {
return @ { MTRTypeKey : type };
}
}
// Convert TLV data into data-value dictionary as described in MTRDeviceResponseHandler
NSDictionary<NSString *, id> * _Nullable MTRDecodeDataValueDictionaryFromCHIPTLV(chip::TLV::TLVReader * data, NSNumber * dataVersion)
{
chip::TLV::TLVType dataTLVType = data->GetType();
switch (dataTLVType) {
case chip::TLV::kTLVType_SignedInteger: {
int64_t val;
CHIP_ERROR err = data->Get(val);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Error(%s): TLV signed integer decoding failed", chip::ErrorStr(err));
return nil;
}
return _MakeDataValueDictionary(MTRSignedIntegerValueType, @(val), dataVersion);
}
case chip::TLV::kTLVType_UnsignedInteger: {
uint64_t val;
CHIP_ERROR err = data->Get(val);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Error(%s): TLV unsigned integer decoding failed", chip::ErrorStr(err));
return nil;
}
return _MakeDataValueDictionary(MTRUnsignedIntegerValueType, @(val), dataVersion);
}
case chip::TLV::kTLVType_Boolean: {
bool val;
CHIP_ERROR err = data->Get(val);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Error(%s): TLV boolean decoding failed", chip::ErrorStr(err));
return nil;
}
return _MakeDataValueDictionary(MTRBooleanValueType, @(val), dataVersion);
}
case chip::TLV::kTLVType_FloatingPointNumber: {
// Try float first
float floatValue;
CHIP_ERROR err = data->Get(floatValue);
if (err == CHIP_NO_ERROR) {
return _MakeDataValueDictionary(MTRFloatValueType, @(floatValue), dataVersion);
}
double val;
err = data->Get(val);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Error(%s): TLV floating point decoding failed", chip::ErrorStr(err));
return nil;
}
return _MakeDataValueDictionary(MTRDoubleValueType, @(val), dataVersion);
}
case chip::TLV::kTLVType_UTF8String: {
CharSpan stringValue;
CHIP_ERROR err = data->Get(stringValue);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Error(%s): TLV UTF8String decoding failed", chip::ErrorStr(err));
return nil;
}
NSString * stringObj = AsString(stringValue);
if (stringObj == nil) {
MTR_LOG_ERROR("Error(%s): TLV UTF8String value is not actually UTF-8", err.AsString());
return nil;
}
return _MakeDataValueDictionary(MTRUTF8StringValueType, stringObj, dataVersion);
}
case chip::TLV::kTLVType_ByteString: {
ByteSpan bytesValue;
CHIP_ERROR err = data->Get(bytesValue);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Error(%s): TLV ByteString decoding failed", chip::ErrorStr(err));
return nil;
}
return _MakeDataValueDictionary(MTROctetStringValueType, AsData(bytesValue), dataVersion);
}
case chip::TLV::kTLVType_Null: {
return _MakeDataValueDictionary(MTRNullValueType, nil, dataVersion);
}
case chip::TLV::kTLVType_Structure:
case chip::TLV::kTLVType_Array: {
NSString * typeName;
switch (dataTLVType) {
case chip::TLV::kTLVType_Structure:
typeName = MTRStructureValueType;
break;
case chip::TLV::kTLVType_Array:
typeName = MTRArrayValueType;
break;
default:
typeName = @"Unsupported";
break;
}
chip::TLV::TLVType tlvType;
CHIP_ERROR err = data->EnterContainer(tlvType);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Error(%s): TLV container entering failed", chip::ErrorStr(err));
return nil;
}
NSMutableArray * array = [[NSMutableArray alloc] init];
while ((err = data->Next()) == CHIP_NO_ERROR) {
chip::TLV::Tag tag = data->GetTag();
id value = MTRDecodeDataValueDictionaryFromCHIPTLV(data);
if (value == nullptr) {
MTR_LOG_ERROR("Error when decoding TLV container of type %s", typeName.UTF8String);
return nil;
}
NSMutableDictionary * arrayElement = [NSMutableDictionary dictionary];
[arrayElement setObject:value forKey:MTRDataKey];
if (dataTLVType == chip::TLV::kTLVType_Structure) {
uint64_t tagNum;
if (IsContextTag(tag)) {
tagNum = TagNumFromTag(tag);
} else if (IsProfileTag(tag)) {
uint64_t profile = ProfileIdFromTag(tag);
tagNum = (profile << kProfileIdShift) | TagNumFromTag(tag);
} else {
MTR_LOG_ERROR("Skipping unknown tag type when decoding TLV structure.");
continue;
}
[arrayElement setObject:[NSNumber numberWithUnsignedLongLong:tagNum] forKey:MTRContextTagKey];
}
[array addObject:arrayElement];
}
if (err != CHIP_END_OF_TLV) {
MTR_LOG_ERROR("Error(%s): TLV container decoding failed", chip::ErrorStr(err));
return nil;
}
err = data->ExitContainer(tlvType);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Error(%s): TLV container exiting failed", chip::ErrorStr(err));
return nil;
}
return _MakeDataValueDictionary(typeName, array, dataVersion);
}
default:
MTR_LOG_ERROR("Error: Unsupported TLV type for conversion: %u", static_cast<unsigned>(data->GetType()));
return nil;
}
}
// writer is allowed to be null to just validate the incoming object without
// actually encoding.
static CHIP_ERROR MTREncodeTLVFromDataValueDictionaryInternal(id object, chip::TLV::TLVWriter * writer, chip::TLV::Tag tag)
{
if (![object isKindOfClass:[NSDictionary class]]) {
MTR_LOG_ERROR("Error: Unsupported object to encode: %@", [object class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
NSString * typeName = ((NSDictionary *) object)[MTRTypeKey];
id value = ((NSDictionary *) object)[MTRValueKey];
if (![typeName isKindOfClass:[NSString class]]) {
MTR_LOG_ERROR("Error: Object to encode has no MTRTypeKey: %@", object);
return CHIP_ERROR_INVALID_ARGUMENT;
}
if ([typeName isEqualToString:MTRSignedIntegerValueType]) {
if (![value isKindOfClass:[NSNumber class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt signed integer type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
return writer ? writer->Put(tag, [value longLongValue]) : CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTRUnsignedIntegerValueType]) {
if (![value isKindOfClass:[NSNumber class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt unsigned integer type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
return writer ? writer->Put(tag, [value unsignedLongLongValue]) : CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTRBooleanValueType]) {
if (![value isKindOfClass:[NSNumber class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt boolean type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
return writer ? writer->Put(tag, static_cast<bool>([value boolValue])) : CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTRFloatValueType]) {
if (![value isKindOfClass:[NSNumber class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt float type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
return writer ? writer->Put(tag, [value floatValue]) : CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTRDoubleValueType]) {
if (![value isKindOfClass:[NSNumber class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt double type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
return writer ? writer->Put(tag, [value doubleValue]) : CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTRNullValueType]) {
return writer ? writer->PutNull(tag) : CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTRUTF8StringValueType]) {
if (![value isKindOfClass:[NSString class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt UTF8 string type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
return writer ? writer->PutString(tag, AsCharSpan(value)) : CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTROctetStringValueType]) {
if (![value isKindOfClass:[NSData class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt octet string type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
return writer ? writer->Put(tag, AsByteSpan(value)) : CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTRStructureValueType]) {
if (![value isKindOfClass:[NSArray class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt structure type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
TLV::TLVType outer = TLV::kTLVType_NotSpecified;
if (writer) {
ReturnErrorOnFailure(writer->StartContainer(tag, chip::TLV::kTLVType_Structure, outer));
}
for (id element in value) {
if (![element isKindOfClass:[NSDictionary class]]) {
MTR_LOG_ERROR("Error: Structure element to encode has corrupt type: %@", [element class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
id elementTag = element[MTRContextTagKey];
id elementValue = element[MTRDataKey];
if (!elementTag || !elementValue) {
MTR_LOG_ERROR("Error: Structure element to encode has corrupt value: %@", element);
return CHIP_ERROR_INVALID_ARGUMENT;
}
if (![elementTag isKindOfClass:NSNumber.class]) {
MTR_LOG_ERROR("Error: Structure element to encode has corrupt tag type: %@", [elementTag class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
// Our tag might actually be a profile tag.
uint64_t tagValue = [elementTag unsignedLongLongValue];
TLV::Tag tag;
if (tagValue > UINT8_MAX) {
tag = TLV::ProfileTag(tagValue >> kProfileIdShift,
(tagValue & ((1ull << kProfileIdShift) - 1)));
} else {
tag = TLV::ContextTag(static_cast<uint8_t>(tagValue));
}
ReturnErrorOnFailure(
MTREncodeTLVFromDataValueDictionaryInternal(elementValue, writer, tag));
}
if (writer) {
ReturnErrorOnFailure(writer->EndContainer(outer));
}
return CHIP_NO_ERROR;
}
if ([typeName isEqualToString:MTRArrayValueType]) {
if (![value isKindOfClass:[NSArray class]]) {
MTR_LOG_ERROR("Error: Object to encode has corrupt array type: %@", [value class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
TLV::TLVType outer = TLV::kTLVType_NotSpecified;
if (writer) {
ReturnErrorOnFailure(writer->StartContainer(tag, chip::TLV::kTLVType_Array, outer));
}
for (id element in value) {
if (![element isKindOfClass:[NSDictionary class]]) {
MTR_LOG_ERROR("Error: Array element to encode has corrupt type: %@", [element class]);
return CHIP_ERROR_INVALID_ARGUMENT;
}
id elementValue = element[MTRDataKey];
if (!elementValue) {
MTR_LOG_ERROR("Error: Array element to encode has corrupt value: %@", element);
return CHIP_ERROR_INVALID_ARGUMENT;
}
ReturnErrorOnFailure(MTREncodeTLVFromDataValueDictionaryInternal(elementValue, writer, chip::TLV::AnonymousTag()));
}
if (writer) {
ReturnErrorOnFailure(writer->EndContainer(outer));
}
return CHIP_NO_ERROR;
}
MTR_LOG_ERROR("Error: Unsupported type to encode: %@", typeName);
return CHIP_ERROR_INVALID_ARGUMENT;
}
static CHIP_ERROR MTREncodeTLVFromDataValueDictionary(id object, chip::TLV::TLVWriter * writer, chip::TLV::Tag tag)
{
CHIP_ERROR err = MTREncodeTLVFromDataValueDictionaryInternal(object, writer, tag);
if (err != CHIP_NO_ERROR) {
MTR_LOG_ERROR("Failed to encode to TLV: %@", object);
}
return err;
}
NSData * _Nullable MTREncodeTLVFromDataValueDictionary(NSDictionary<NSString *, id> * value, NSError * __autoreleasing * error)
{
// A single data item cannot be bigger than a packet, so just use 1200 bytes
// as the max size of our buffer. This assumes that lists will not be
// passed as-is to this method but will get chunked, with each list item
// passed to this method separately.
uint8_t buffer[1200];
TLV::TLVWriter writer;
writer.Init(buffer);
CHIP_ERROR err = MTREncodeTLVFromDataValueDictionary(value, &writer, TLV::AnonymousTag());
if (err != CHIP_NO_ERROR) {
if (error) {
*error = [MTRError errorForCHIPErrorCode:err];
}
return nil;
}
return AsData(ByteSpan(buffer, writer.GetLengthWritten()));
}
BOOL MTRDataValueDictionaryIsWellFormed(MTRDeviceDataValueDictionary value)
{
return MTREncodeTLVFromDataValueDictionary(value, nullptr, TLV::AnonymousTag()) == CHIP_NO_ERROR;
}
// Callback type to pass data value as an NSObject
typedef void (*MTRDataValueDictionaryCallback)(void * context, id value);
// Rename to be generic for decode and encode
class MTRDataValueDictionaryDecodableType {
public:
MTRDataValueDictionaryDecodableType()
: decodedObj(nil)
{
}
MTRDataValueDictionaryDecodableType(id obj)
: decodedObj(obj)
{
}
CHIP_ERROR Decode(chip::TLV::TLVReader & data)
{
decodedObj = MTRDecodeDataValueDictionaryFromCHIPTLV(&data);
if (decodedObj == nil) {
MTR_LOG_ERROR("Error: Failed to get value from TLV data for attribute reading response");
}
return (decodedObj) ? CHIP_NO_ERROR : CHIP_ERROR_DECODE_FAILED;
}
CHIP_ERROR Encode(chip::TLV::TLVWriter & writer, chip::TLV::Tag tag) const
{
return MTREncodeTLVFromDataValueDictionary(decodedObj, &writer, tag);
}
static constexpr bool kIsFabricScoped = false;
static bool MustUseTimedInvoke() { return false; }
NSDictionary<NSString *, id> * _Nullable GetDecodedObject() const { return decodedObj; }
private:
NSDictionary<NSString *, id> * _Nullable decodedObj;
};
// Callback bridge for MTRDataValueDictionaryCallback
class MTRDataValueDictionaryCallbackBridge : public MTRCallbackBridge<MTRDataValueDictionaryCallback> {
public:
MTRDataValueDictionaryCallbackBridge(dispatch_queue_t queue, MTRDeviceResponseHandler handler, MTRActionBlock action)
: MTRCallbackBridge<MTRDataValueDictionaryCallback>(queue, handler, action, OnSuccessFn) {};
static void OnSuccessFn(void * context, id value) { DispatchSuccess(context, value); }
};
template <typename DecodableValueType>
class BufferedReadClientCallback final : public app::ReadClient::Callback {
public:
using OnSuccessAttributeCallbackType
= std::function<void(const ConcreteDataAttributePath & aPath, const DecodableValueType & aData)>;
using OnSuccessEventCallbackType = std::function<void(const EventHeader & aEventHeader, const DecodableValueType & aData)>;
using OnErrorCallbackType = std::function<void(
const app::ConcreteAttributePath * attributePath, const app::ConcreteEventPath * eventPath, CHIP_ERROR aError)>;
using OnDoneCallbackType = std::function<void(BufferedReadClientCallback * callback)>;
using OnSubscriptionEstablishedCallbackType = std::function<void()>;
using OnDeviceResubscriptionScheduledCallbackType = std::function<void(NSError * error, NSNumber * resubscriptionDelay)>;
BufferedReadClientCallback(app::AttributePathParams * aAttributePathParamsList, size_t aAttributePathParamsSize,
app::EventPathParams * aEventPathParamsList, size_t aEventPathParamsSize,
OnSuccessAttributeCallbackType aOnAttributeSuccess, OnSuccessEventCallbackType aOnEventSuccess,
OnErrorCallbackType aOnError, OnDoneCallbackType aOnDone,
OnSubscriptionEstablishedCallbackType aOnSubscriptionEstablished = nullptr,
OnDeviceResubscriptionScheduledCallbackType aOnDeviceResubscriptionScheduled = nullptr)
: mAttributePathParamsList(aAttributePathParamsList)
, mAttributePathParamsSize(aAttributePathParamsSize)
, mEventPathParamsList(aEventPathParamsList)
, mEventPathParamsSize(aEventPathParamsSize)
, mOnAttributeSuccess(aOnAttributeSuccess)
, mOnEventSuccess(aOnEventSuccess)
, mOnError(aOnError)
, mOnDone(aOnDone)
, mOnSubscriptionEstablished(aOnSubscriptionEstablished)
, mOnDeviceResubscriptionScheduled(aOnDeviceResubscriptionScheduled)
, mBufferedReadAdapter(*this)
{
}
~BufferedReadClientCallback()
{
// Ensure we release the ReadClient before we tear down anything else,
// so it can call our OnDeallocatePaths properly.
mReadClient = nullptr;
}
app::BufferedReadCallback & GetBufferedCallback() { return mBufferedReadAdapter; }
void AdoptReadClient(Platform::UniquePtr<app::ReadClient> aReadClient) { mReadClient = std::move(aReadClient); }
private:
void OnAttributeData(
const app::ConcreteDataAttributePath & aPath, TLV::TLVReader * apData, const app::StatusIB & aStatus) override
{
CHIP_ERROR err = CHIP_NO_ERROR;
DecodableValueType value;
VerifyOrExit(mOnAttributeSuccess != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrExit(mAttributePathParamsList != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);
//
// We shouldn't be getting list item operations in the provided path since that should be handled by the buffered read
// callback. If we do, that's a bug.
//
VerifyOrDie(!aPath.IsListItemOperation());
VerifyOrExit(
std::find_if(mAttributePathParamsList, mAttributePathParamsList + mAttributePathParamsSize,
[aPath](app::AttributePathParams & pathParam) -> bool { return pathParam.IsAttributePathSupersetOf(aPath); })
!= mAttributePathParamsList + mAttributePathParamsSize,
err = CHIP_ERROR_SCHEMA_MISMATCH);
VerifyOrExit(aStatus.IsSuccess(), err = aStatus.ToChipError());
VerifyOrExit(apData != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);
SuccessOrExit(err = app::DataModel::Decode(*apData, value));
mOnAttributeSuccess(aPath, value);
exit:
if (err != CHIP_NO_ERROR) {
mOnError(&aPath, nullptr, err);
}
}
void OnEventData(const EventHeader & aEventHeader, TLV::TLVReader * apData, const StatusIB * apStatus) override
{
CHIP_ERROR err = CHIP_NO_ERROR;
DecodableValueType value;
VerifyOrExit(mOnEventSuccess != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrExit(mEventPathParamsList != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrExit(std::find_if(mEventPathParamsList, mEventPathParamsList + mEventPathParamsSize,
[aEventHeader](app::EventPathParams & pathParam) -> bool {
return pathParam.IsEventPathSupersetOf(aEventHeader.mPath);
})
!= mEventPathParamsList + mEventPathParamsSize,
err = CHIP_ERROR_SCHEMA_MISMATCH);
VerifyOrExit(apStatus == nullptr, err = apStatus->ToChipError());
VerifyOrExit(apData != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT);
SuccessOrExit(err = app::DataModel::Decode(*apData, value));
mOnEventSuccess(aEventHeader, value);
exit:
if (err != CHIP_NO_ERROR) {
mOnError(nullptr, &aEventHeader.mPath, err);
}
}
void OnError(CHIP_ERROR aError) override { mOnError(nullptr, nullptr, aError); }
void OnDone(ReadClient *) override { mOnDone(this); }
void OnSubscriptionEstablished(SubscriptionId aSubscriptionId) override
{
if (mOnSubscriptionEstablished) {
mOnSubscriptionEstablished();
}
}
CHIP_ERROR OnResubscriptionNeeded(ReadClient * apReadClient, CHIP_ERROR aTerminationCause) override
{
CHIP_ERROR err = ReadClient::Callback::OnResubscriptionNeeded(apReadClient, aTerminationCause);
ReturnErrorOnFailure(err);
if (mOnDeviceResubscriptionScheduled != nullptr) {
auto callback = mOnDeviceResubscriptionScheduled;
auto error = [MTRError errorForCHIPErrorCode:aTerminationCause];
auto delayMs = @(apReadClient->ComputeTimeTillNextSubscription());
callback(error, delayMs);
}
return CHIP_NO_ERROR;
}
void OnDeallocatePaths(chip::app::ReadPrepareParams && aReadPrepareParams) override {}
OnSuccessAttributeCallbackType mOnAttributeSuccess;
OnSuccessEventCallbackType mOnEventSuccess;
OnErrorCallbackType mOnError;
OnDoneCallbackType mOnDone;
OnSubscriptionEstablishedCallbackType mOnSubscriptionEstablished;
OnDeviceResubscriptionScheduledCallbackType mOnDeviceResubscriptionScheduled;
app::BufferedReadCallback mBufferedReadAdapter;
Platform::UniquePtr<app::ReadClient> mReadClient;
app::AttributePathParams * mAttributePathParamsList;
app::EventPathParams * mEventPathParamsList;
size_t mAttributePathParamsSize;
size_t mEventPathParamsSize;
};
- (void)readAttributesWithEndpointID:(NSNumber * _Nullable)endpointID
clusterID:(NSNumber * _Nullable)clusterID
attributeID:(NSNumber * _Nullable)attributeID
params:(MTRReadParams * _Nullable)params
queue:(dispatch_queue_t)queue
completion:(MTRDeviceResponseHandler)completion
{
NSArray<MTRAttributeRequestPath *> * attributePaths = [NSArray
arrayWithObject:[MTRAttributeRequestPath requestPathWithEndpointID:endpointID clusterID:clusterID attributeID:attributeID]];
[self readAttributePaths:attributePaths eventPaths:nil params:params queue:queue completion:completion];
}
- (void)_readKnownAttributeWithEndpointID:(NSNumber *)endpointID
clusterID:(NSNumber *)clusterID
attributeID:(NSNumber *)attributeID
params:(MTRReadParams * _Nullable)params