| /** |
| * |
| * Copyright (c) 2020 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. |
| */ |
| |
| // this file contains all the common includes for clusters in the zcl-util |
| |
| #include <app/util/attribute-storage.h> |
| |
| // for pulling in defines dealing with EITHER server or client |
| #include "app/util/common.h" |
| #include <app/util/config.h> |
| #include <app/util/error-mapping.h> |
| #include <app/util/generic-callbacks.h> |
| #include <app/util/odd-sized-integers.h> |
| |
| #include <app/reporting/reporting.h> |
| #include <protocols/interaction_model/Constants.h> |
| |
| using namespace chip; |
| |
| //------------------------------------------------------------------------------ |
| |
| //------------------------------------------------------------------------------ |
| // External Declarations |
| |
| //------------------------------------------------------------------------------ |
| // Forward Declarations |
| |
| //------------------------------------------------------------------------------ |
| // Globals |
| |
| EmberAfStatus emberAfWriteAttributeExternal(EndpointId endpoint, ClusterId cluster, AttributeId attributeID, uint8_t * dataPtr, |
| EmberAfAttributeType dataType) |
| { |
| EmberAfAttributeWritePermission extWritePermission = |
| emberAfAllowNetworkWriteAttributeCallback(endpoint, cluster, attributeID, dataPtr, dataType); |
| switch (extWritePermission) |
| { |
| case EmberAfAttributeWritePermission::DenyWrite: |
| return EMBER_ZCL_STATUS_FAILURE; |
| case EmberAfAttributeWritePermission::AllowWriteNormal: |
| case EmberAfAttributeWritePermission::AllowWriteOfReadOnly: |
| return emAfWriteAttribute(endpoint, cluster, attributeID, dataPtr, dataType, |
| (extWritePermission == EmberAfAttributeWritePermission::AllowWriteOfReadOnly), false); |
| default: |
| return (EmberAfStatus) extWritePermission; |
| } |
| } |
| |
| EmberAfStatus emberAfWriteAttribute(EndpointId endpoint, ClusterId cluster, AttributeId attributeID, uint8_t * dataPtr, |
| EmberAfAttributeType dataType) |
| { |
| return emAfWriteAttribute(endpoint, cluster, attributeID, dataPtr, dataType, |
| true, // override read-only? |
| false); // just test? |
| } |
| |
| EmberAfStatus emberAfReadAttribute(EndpointId endpoint, ClusterId cluster, AttributeId attributeID, uint8_t * dataPtr, |
| uint16_t readLength) |
| { |
| return emAfReadAttribute(endpoint, cluster, attributeID, dataPtr, readLength, nullptr); |
| } |
| |
| //------------------------------------------------------------------------------ |
| // Internal Functions |
| |
| // Helper for determining whether a value is a null value. |
| template <typename T> |
| static bool IsNullValue(const uint8_t * data) |
| { |
| using Traits = app::NumericAttributeTraits<T>; |
| // We don't know how data is aligned, so safely copy it over to the relevant |
| // StorageType value. |
| typename Traits::StorageType val; |
| memcpy(&val, data, sizeof(val)); |
| return Traits::IsNullValue(val); |
| } |
| |
| static bool IsNullValue(const uint8_t * data, uint16_t dataLen, bool isAttributeSigned) |
| { |
| if (dataLen > 4) |
| { |
| // We don't support this, just like emberAfCompareValues does not. |
| return false; |
| } |
| |
| switch (dataLen) |
| { |
| case 1: { |
| if (isAttributeSigned) |
| { |
| return IsNullValue<int8_t>(data); |
| } |
| return IsNullValue<uint8_t>(data); |
| } |
| case 2: { |
| if (isAttributeSigned) |
| { |
| return IsNullValue<int16_t>(data); |
| } |
| return IsNullValue<uint16_t>(data); |
| } |
| case 3: { |
| if (isAttributeSigned) |
| { |
| return IsNullValue<app::OddSizedInteger<3, true>>(data); |
| } |
| return IsNullValue<app::OddSizedInteger<3, false>>(data); |
| } |
| case 4: { |
| if (isAttributeSigned) |
| { |
| return IsNullValue<int32_t>(data); |
| } |
| return IsNullValue<uint32_t>(data); |
| } |
| } |
| |
| // Not reached. |
| return false; |
| } |
| |
| // writes an attribute (identified by clusterID and attrID to the given value. |
| // this returns: |
| // - EMBER_ZCL_STATUS_UNSUPPORTED_ENDPOINT: if endpoint isn't supported by the device. |
| // - EMBER_ZCL_STATUS_UNSUPPORTED_CLUSTER: if cluster isn't supported on the endpoint. |
| // - EMBER_ZCL_STATUS_UNSUPPORTED_ATTRIBUTE: if attribute isn't supported in the cluster. |
| // - EMBER_ZCL_STATUS_INVALID_DATA_TYPE: if the data type passed in doesnt match the type |
| // stored in the attribute table |
| // - EMBER_ZCL_STATUS_UNSUPPORTED_WRITE: if the attribute isnt writable |
| // - EMBER_ZCL_STATUS_CONSTRAINT_ERROR: if the value is set out of the allowable range for |
| // the attribute |
| // - EMBER_ZCL_STATUS_SUCCESS: if the attribute was found and successfully written |
| // |
| // if true is passed in for overrideReadOnlyAndDataType then the data type is |
| // not checked and the read-only flag is ignored. This mode is meant for |
| // testing or setting the initial value of the attribute on the device. |
| // |
| // if true is passed for justTest, then the type is not written but all |
| // checks are done to see if the type could be written |
| // reads the attribute specified, returns false if the attribute is not in |
| // the table or the data is too large, returns true and writes to dataPtr |
| // if the attribute is supported and the readLength specified is less than |
| // the length of the data. |
| EmberAfStatus emAfWriteAttribute(EndpointId endpoint, ClusterId cluster, AttributeId attributeID, uint8_t * data, |
| EmberAfAttributeType dataType, bool overrideReadOnlyAndDataType, bool justTest) |
| { |
| const EmberAfAttributeMetadata * metadata = nullptr; |
| EmberAfAttributeSearchRecord record; |
| record.endpoint = endpoint; |
| record.clusterId = cluster; |
| record.attributeId = attributeID; |
| EmberAfStatus status = emAfReadOrWriteAttribute(&record, &metadata, |
| nullptr, // buffer |
| 0, // buffer size |
| false); // write? |
| |
| // if we dont support that attribute |
| if (metadata == nullptr) |
| { |
| ChipLogProgress(Zcl, "%pep %x clus " ChipLogFormatMEI " attr " ChipLogFormatMEI " not supported", "WRITE ERR: ", endpoint, |
| ChipLogValueMEI(cluster), ChipLogValueMEI(attributeID)); |
| return status; |
| } |
| |
| // if the data type specified by the caller is incorrect |
| if (!(overrideReadOnlyAndDataType)) |
| { |
| if (dataType != metadata->attributeType) |
| { |
| ChipLogProgress(Zcl, "%pinvalid data type", "WRITE ERR: "); |
| return EMBER_ZCL_STATUS_INVALID_DATA_TYPE; |
| } |
| |
| if (metadata->IsReadOnly()) |
| { |
| ChipLogProgress(Zcl, "%pattr not writable", "WRITE ERR: "); |
| return EMBER_ZCL_STATUS_UNSUPPORTED_WRITE; |
| } |
| } |
| |
| // if the value the attribute is being set to is out of range |
| // return EMBER_ZCL_STATUS_CONSTRAINT_ERROR |
| if ((metadata->mask & ATTRIBUTE_MASK_MIN_MAX) != 0U) |
| { |
| EmberAfDefaultAttributeValue minv = metadata->defaultValue.ptrToMinMaxValue->minValue; |
| EmberAfDefaultAttributeValue maxv = metadata->defaultValue.ptrToMinMaxValue->maxValue; |
| uint16_t dataLen = emberAfAttributeSize(metadata); |
| const uint8_t * minBytes; |
| const uint8_t * maxBytes; |
| if (dataLen <= 2) |
| { |
| static_assert(sizeof(minv.defaultValue) == 2, "if statement relies on size of minv.defaultValue being 2"); |
| static_assert(sizeof(maxv.defaultValue) == 2, "if statement relies on size of maxv.defaultValue being 2"); |
| minBytes = reinterpret_cast<const uint8_t *>(&(minv.defaultValue)); |
| maxBytes = reinterpret_cast<const uint8_t *>(&(maxv.defaultValue)); |
| // On big endian cpu with length 1 only the second byte counts |
| #if (BIGENDIAN_CPU) |
| if (dataLen == 1) |
| { |
| minBytes++; |
| maxBytes++; |
| } |
| #endif // BIGENDIAN_CPU |
| } |
| else |
| { |
| minBytes = minv.ptrToDefaultValue; |
| maxBytes = maxv.ptrToDefaultValue; |
| } |
| |
| bool isAttributeSigned = emberAfIsTypeSigned(metadata->attributeType); |
| bool isOutOfRange = emberAfCompareValues(minBytes, data, dataLen, isAttributeSigned) == 1 || |
| emberAfCompareValues(maxBytes, data, dataLen, isAttributeSigned) == -1; |
| |
| if (isOutOfRange && |
| // null value is always in-range for a nullable attribute. |
| (!metadata->IsNullable() || !IsNullValue(data, dataLen, isAttributeSigned))) |
| { |
| return EMBER_ZCL_STATUS_CONSTRAINT_ERROR; |
| } |
| } |
| |
| // write the data unless this is only a test |
| if (!justTest) |
| { |
| const app::ConcreteAttributePath attributePath(endpoint, cluster, attributeID); |
| |
| // Pre write attribute callback for all attribute changes, |
| // regardless of cluster. |
| Protocols::InteractionModel::Status imStatus = |
| MatterPreAttributeChangeCallback(attributePath, dataType, emberAfAttributeSize(metadata), data); |
| if (imStatus != Protocols::InteractionModel::Status::Success) |
| { |
| return app::ToEmberAfStatus(imStatus); |
| } |
| |
| // Pre-write attribute callback specific |
| // to the cluster that the attribute lives in. |
| status = emAfClusterPreAttributeChangedCallback(attributePath, dataType, emberAfAttributeSize(metadata), data); |
| |
| // Ignore the following write operation and return success |
| if (status == EMBER_ZCL_STATUS_WRITE_IGNORED) |
| { |
| return EMBER_ZCL_STATUS_SUCCESS; |
| } |
| |
| if (status != EMBER_ZCL_STATUS_SUCCESS) |
| { |
| return status; |
| } |
| |
| // write the attribute |
| status = emAfReadOrWriteAttribute(&record, |
| nullptr, // metadata |
| data, |
| 0, // buffer size - unused |
| true); // write? |
| |
| if (status != EMBER_ZCL_STATUS_SUCCESS) |
| { |
| return status; |
| } |
| |
| // Save the attribute to persistent storage if needed |
| // The callee will weed out attributes that do not need to be stored. |
| emAfSaveAttributeToStorageIfNeeded(data, endpoint, cluster, metadata); |
| |
| MatterReportingAttributeChangeCallback(endpoint, cluster, attributeID); |
| |
| // Post write attribute callback for all attributes changes, regardless |
| // of cluster. |
| MatterPostAttributeChangeCallback(attributePath, dataType, emberAfAttributeSize(metadata), data); |
| |
| // Post-write attribute callback specific |
| // to the cluster that the attribute lives in. |
| emAfClusterAttributeChangedCallback(attributePath); |
| } |
| else |
| { |
| // bug: 11618, we are not handling properly external attributes |
| // in this case... We need to do something. We don't really |
| // know if it will succeed. |
| ChipLogProgress(Zcl, "WRITE: no write, just a test"); |
| } |
| |
| return EMBER_ZCL_STATUS_SUCCESS; |
| } |
| |
| // If dataPtr is NULL, no data is copied to the caller. |
| // readLength should be 0 in that case. |
| |
| EmberAfStatus emAfReadAttribute(EndpointId endpoint, ClusterId cluster, AttributeId attributeID, uint8_t * dataPtr, |
| uint16_t readLength, EmberAfAttributeType * dataType) |
| { |
| const EmberAfAttributeMetadata * metadata = nullptr; |
| EmberAfAttributeSearchRecord record; |
| EmberAfStatus status; |
| record.endpoint = endpoint; |
| record.clusterId = cluster; |
| record.attributeId = attributeID; |
| status = emAfReadOrWriteAttribute(&record, &metadata, dataPtr, readLength, |
| false); // write? |
| |
| if (status == EMBER_ZCL_STATUS_SUCCESS) |
| { |
| // It worked! If the user asked for the type, set it before returning. |
| if (dataType != nullptr) |
| { |
| (*dataType) = metadata->attributeType; |
| } |
| } |
| else |
| { // failed, print debug info |
| if (status == EMBER_ZCL_STATUS_RESOURCE_EXHAUSTED) |
| { |
| ChipLogProgress(Zcl, "READ: attribute size too large for caller"); |
| } |
| } |
| |
| return status; |
| } |
