Matter SDK Coverage Report
Current view: top level - lib/asn1 - ASN1OID.cpp (source / functions) Coverage Total Hit
Test: SHA:b879ecb8e99e175eea0a293a888bda853da2b19c Lines: 71.8 % 39 28
Test Date: 2025-01-17 19:00:11 Functions: 83.3 % 6 5

            Line data    Source code
       1              : /*
       2              :  *
       3              :  *    Copyright (c) 2020-2021 Project CHIP Authors
       4              :  *    Copyright (c) 2013-2017 Nest Labs, Inc.
       5              :  *    All rights reserved.
       6              :  *
       7              :  *    Licensed under the Apache License, Version 2.0 (the "License");
       8              :  *    you may not use this file except in compliance with the License.
       9              :  *    You may obtain a copy of the License at
      10              :  *
      11              :  *        http://www.apache.org/licenses/LICENSE-2.0
      12              :  *
      13              :  *    Unless required by applicable law or agreed to in writing, software
      14              :  *    distributed under the License is distributed on an "AS IS" BASIS,
      15              :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      16              :  *    See the License for the specific language governing permissions and
      17              :  *    limitations under the License.
      18              :  */
      19              : 
      20              : /**
      21              :  *    @file
      22              :  *      This file implements methods for manipulating for writing
      23              :  *      Abstract Syntax Notation One (ASN.1) Object Identifiers
      24              :  *      (OIDs).
      25              :  *
      26              :  */
      27              : 
      28              : #include <stdint.h>
      29              : #include <stdlib.h>
      30              : #include <string.h>
      31              : 
      32              : #include <lib/support/DLLUtil.h>
      33              : #include <lib/support/SafeInt.h>
      34              : 
      35              : #define ASN1_DEFINE_OID_TABLE
      36              : #define ASN1_DEFINE_OID_NAME_TABLE
      37              : #include <lib/asn1/ASN1.h>
      38              : 
      39              : namespace chip {
      40              : namespace ASN1 {
      41              : 
      42         1519 : DLL_EXPORT OID ParseObjectID(const uint8_t * encodedOID, uint16_t encodedOIDLen)
      43              : {
      44         1519 :     if (encodedOID == nullptr or encodedOIDLen == 0)
      45              :     {
      46            0 :         return kOID_NotSpecified;
      47              :     }
      48              : 
      49        31095 :     for (const auto & tableEntry : sOIDTable)
      50              :     {
      51        31018 :         if (encodedOIDLen == tableEntry.EncodedOIDLen && memcmp(encodedOID, tableEntry.EncodedOID, encodedOIDLen) == 0)
      52              :         {
      53         1442 :             return tableEntry.EnumVal;
      54              :         }
      55              :     }
      56              : 
      57           77 :     return kOID_Unknown;
      58              : }
      59              : 
      60        36450 : bool GetEncodedObjectID(OID oid, const uint8_t *& encodedOID, uint16_t & encodedOIDLen)
      61              : {
      62       727642 :     for (const auto & tableEntry : sOIDTable)
      63              :     {
      64       727633 :         if (oid == tableEntry.EnumVal)
      65              :         {
      66        36441 :             encodedOID    = tableEntry.EncodedOID;
      67        36441 :             encodedOIDLen = tableEntry.EncodedOIDLen;
      68        36441 :             return true;
      69              :         }
      70              :     }
      71              : 
      72            9 :     return false;
      73              : }
      74              : 
      75         1101 : OIDCategory GetOIDCategory(OID oid)
      76              : {
      77         1101 :     if (oid == kOID_Unknown)
      78              :     {
      79            3 :         return kOIDCategory_Unknown;
      80              :     }
      81         1098 :     if (oid == kOID_NotSpecified)
      82              :     {
      83            0 :         return kOIDCategory_NotSpecified;
      84              :     }
      85         1098 :     return static_cast<OIDCategory>(oid & kOIDCategory_Mask);
      86              : }
      87              : 
      88            0 : const char * GetOIDName(OID oid)
      89              : {
      90            0 :     if (oid == kOID_Unknown)
      91              :     {
      92            0 :         return "Unknown";
      93              :     }
      94            0 :     if (oid == kOID_NotSpecified)
      95              :     {
      96            0 :         return "NotSpecified";
      97              :     }
      98            0 :     for (const auto & tableEntry : sOIDNameTable)
      99              :     {
     100            0 :         if (oid == tableEntry.EnumVal)
     101              :         {
     102            0 :             return tableEntry.Name;
     103              :         }
     104              :     }
     105            0 :     return "Unknown";
     106              : }
     107              : 
     108         1519 : CHIP_ERROR ASN1Reader::GetObjectId(OID & oid)
     109              : {
     110         1519 :     VerifyOrReturnError(Value != nullptr, ASN1_ERROR_INVALID_STATE);
     111         1519 :     VerifyOrReturnError(ValueLen >= 1, ASN1_ERROR_INVALID_ENCODING);
     112         1519 :     VerifyOrReturnError(mElemStart + mHeadLen + ValueLen <= mContainerEnd, ASN1_ERROR_UNDERRUN);
     113         1519 :     VerifyOrReturnError(CanCastTo<uint16_t>(ValueLen), ASN1_ERROR_INVALID_ENCODING);
     114         1519 :     oid = ParseObjectID(Value, static_cast<uint16_t>(ValueLen));
     115         1519 :     return CHIP_NO_ERROR;
     116              : }
     117              : 
     118        36450 : CHIP_ERROR ASN1Writer::PutObjectId(OID oid)
     119              : {
     120              :     const uint8_t * encodedOID;
     121              :     uint16_t encodedOIDLen;
     122              : 
     123        36450 :     VerifyOrReturnError(GetEncodedObjectID(oid, encodedOID, encodedOIDLen), ASN1_ERROR_UNKNOWN_OBJECT_ID);
     124              : 
     125        36441 :     return PutObjectId(encodedOID, encodedOIDLen);
     126              : }
     127              : 
     128              : } // namespace ASN1
     129              : } // namespace chip
        

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