chain.cpp raw

   1  // Copyright (c) 2020-present The Bitcoin Core developers
   2  // Distributed under the MIT software license, see the accompanying
   3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4  
   5  #include <chain.h>
   6  #include <test/fuzz/FuzzedDataProvider.h>
   7  #include <test/fuzz/fuzz.h>
   8  #include <test/fuzz/util.h>
   9  
  10  #include <cstdint>
  11  #include <optional>
  12  #include <vector>
  13  
  14  FUZZ_TARGET(chain)
  15  {
  16      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  17      std::optional<CDiskBlockIndex> disk_block_index = ConsumeDeserializable<CDiskBlockIndex>(fuzzed_data_provider);
  18      if (!disk_block_index) {
  19          return;
  20      }
  21  
  22      const uint256 zero{};
  23      disk_block_index->phashBlock = &zero;
  24      {
  25          LOCK(::cs_main);
  26          (void)disk_block_index->ConstructBlockHash();
  27          (void)disk_block_index->GetBlockPos();
  28          (void)disk_block_index->GetBlockTime();
  29          (void)disk_block_index->GetBlockTimeMax();
  30          (void)disk_block_index->GetMedianTimePast();
  31          (void)disk_block_index->GetUndoPos();
  32          (void)disk_block_index->HaveNumChainTxs();
  33          (void)disk_block_index->IsValid(BLOCK_VALID_TRANSACTIONS);
  34      }
  35  
  36      const CBlockHeader block_header = disk_block_index->GetBlockHeader();
  37      (void)CDiskBlockIndex{*disk_block_index};
  38      (void)disk_block_index->BuildSkip();
  39  
  40      LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
  41          const BlockStatus block_status = fuzzed_data_provider.PickValueInArray({
  42              BlockStatus::BLOCK_VALID_UNKNOWN,
  43              BlockStatus::BLOCK_VALID_RESERVED,
  44              BlockStatus::BLOCK_VALID_TREE,
  45              BlockStatus::BLOCK_VALID_TRANSACTIONS,
  46              BlockStatus::BLOCK_VALID_CHAIN,
  47              BlockStatus::BLOCK_VALID_SCRIPTS,
  48              BlockStatus::BLOCK_VALID_MASK,
  49              BlockStatus::BLOCK_HAVE_DATA,
  50              BlockStatus::BLOCK_HAVE_UNDO,
  51              BlockStatus::BLOCK_HAVE_MASK,
  52              BlockStatus::BLOCK_FAILED_VALID,
  53              BlockStatus::BLOCK_OPT_WITNESS,
  54          });
  55          if (block_status & ~BLOCK_VALID_MASK) {
  56              continue;
  57          }
  58          WITH_LOCK(::cs_main, (void)disk_block_index->RaiseValidity(block_status));
  59      }
  60  
  61      CBlockIndex block_index{block_header};
  62      block_index.phashBlock = &zero;
  63      (void)block_index.GetBlockHash();
  64      (void)block_index.ToString();
  65  }
  66