Line data    Source code

       1              : /*
       2              :  *
       3              :  *    Copyright (c) 2025 Project CHIP Authors
       4              :  *    All rights reserved.
       5              :  *
       6              :  *    Licensed under the Apache License, Version 2.0 (the "License");
       7              :  *    you may not use this file except in compliance with the License.
       8              :  *    You may obtain a copy of the License at
       9              :  *
      10              :  *        http://www.apache.org/licenses/LICENSE-2.0
      11              :  *
      12              :  *    Unless required by applicable law or agreed to in writing, software
      13              :  *    distributed under the License is distributed on an "AS IS" BASIS,
      14              :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      15              :  *    See the License for the specific language governing permissions and
      16              :  *    limitations under the License.
      17              :  */
      18              : #include <lib/support/CHIPMemString.h>
      19              : #include <tracing/esp32_diagnostic_trace/DiagnosticEntry.h>
      20              : using namespace chip::TLV;
      21              : 
      22              : namespace chip {
      23              : namespace Tracing {
      24              : namespace Diagnostics {
      25              : 
      26           31 : CHIP_ERROR WriteString(TLVWriter & writer, const DiagTag tag, const char * string)
      27              : {
      28              :     char buffer[kMaxStringValueSize + 1];
      29           31 :     Platform::CopyString(buffer, string);
      30           31 :     return writer.PutString(chip::TLV::ContextTag(tag), buffer);
      31              : }
      32              : 
      33           17 : CHIP_ERROR Encode(TLVWriter & writer, const DiagnosticEntry & entry)
      34              : {
      35           17 :     TLVType DiagnosticOuterContainer = kTLVType_NotSpecified;
      36           17 :     ReturnErrorOnFailure(writer.StartContainer(AnonymousTag(), kTLVType_Structure, DiagnosticOuterContainer));
      37           17 :     ReturnErrorOnFailure(writer.Put(ContextTag(DiagTag::kTimestamp), entry.timestamps_ms_since_boot));
      38           17 :     ReturnErrorOnFailure(WriteString(writer, DiagTag::kLabel, entry.label));
      39           17 :     switch (entry.type)
      40              :     {
      41            0 :     case ValueType::kInvalidType:
      42            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
      43           14 :     case ValueType::kCharString:
      44           14 :         ReturnErrorOnFailure(WriteString(writer, DiagTag::kValue, entry.stringValue));
      45           14 :         break;
      46            1 :     case ValueType::kUnsignedInteger:
      47            1 :         ReturnErrorOnFailure(writer.Put(chip::TLV::ContextTag(DiagTag::kValue), entry.uintValue));
      48            1 :         break;
      49            2 :     case ValueType::kSignedInteger:
      50            2 :         ReturnErrorOnFailure(writer.Put(chip::TLV::ContextTag(DiagTag::kValue), entry.intValue));
      51            2 :         break;
      52              :     }
      53           17 :     ReturnErrorOnFailure(writer.EndContainer(DiagnosticOuterContainer));
      54           17 :     ReturnErrorOnFailure(writer.Finalize());
      55           17 :     ChipLogDetail(DeviceLayer, "Diagnostic Value written to storage successfully. label: %s\n", entry.label);
      56           17 :     return CHIP_NO_ERROR;
      57              : }
      58              : 
      59           16 : CHIP_ERROR Decode(TLVReader & reader, DiagnosticEntry & entry)
      60              : {
      61              :     TLVType containerType;
      62           16 :     ReturnErrorOnFailure(reader.EnterContainer(containerType));
      63           16 :     ReturnErrorOnFailure(reader.Next(ContextTag(DiagTag::kTimestamp)));
      64           16 :     ReturnErrorOnFailure(reader.Get(entry.timestamps_ms_since_boot));
      65           16 :     ReturnErrorOnFailure(reader.Next(ContextTag(DiagTag::kLabel)));
      66           16 :     uint32_t labelSize = reader.GetLength();
      67           16 :     if (labelSize > kMaxStringValueSize)
      68              :     {
      69            0 :         return CHIP_ERROR_BUFFER_TOO_SMALL;
      70              :     }
      71           16 :     ReturnErrorOnFailure(reader.GetString(entry.label, kMaxStringValueSize + 1));
      72           16 :     ReturnErrorOnFailure(reader.Next(ContextTag(DiagTag::kValue)));
      73           16 :     switch (reader.GetType())
      74              :     {
      75            0 :     case kTLVType_NotSpecified:
      76            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
      77           13 :     case kTLVType_UTF8String: {
      78           13 :         uint32_t valueSize = reader.GetLength();
      79           13 :         if (valueSize > kMaxStringValueSize)
      80              :         {
      81            0 :             return CHIP_ERROR_BUFFER_TOO_SMALL;
      82              :         }
      83           13 :         ReturnErrorOnFailure(reader.GetString(entry.stringValue, kMaxStringValueSize + 1));
      84           13 :         entry.type = ValueType::kCharString;
      85           13 :         break;
      86              :     }
      87            1 :     case kTLVType_UnsignedInteger:
      88            1 :         ReturnErrorOnFailure(reader.Get(entry.uintValue));
      89            1 :         entry.type = ValueType::kUnsignedInteger;
      90            1 :         break;
      91            2 :     case kTLVType_SignedInteger:
      92            2 :         ReturnErrorOnFailure(reader.Get(entry.intValue));
      93            2 :         entry.type = ValueType::kSignedInteger;
      94            2 :         break;
      95            0 :     default:
      96            0 :         ChipLogError(DeviceLayer, "Invalid value type encountered while decoding DiagnosticEntry");
      97            0 :         return CHIP_ERROR_INVALID_ARGUMENT;
      98              :     }
      99           16 :     return reader.ExitContainer(containerType);
     100              : }
     101              : 
     102              : } // namespace Diagnostics
     103              : } // namespace Tracing
     104              : } // namespace chip