merkleblock.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 <merkleblock.h>
   6  #include <test/fuzz/FuzzedDataProvider.h>
   7  #include <test/fuzz/fuzz.h>
   8  #include <test/fuzz/util.h>
   9  #include <uint256.h>
  10  
  11  #include <cstdint>
  12  #include <optional>
  13  #include <string>
  14  #include <vector>
  15  
  16  FUZZ_TARGET(merkleblock)
  17  {
  18      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  19      CPartialMerkleTree partial_merkle_tree;
  20      CallOneOf(
  21          fuzzed_data_provider,
  22          [&] {
  23              const std::optional<CPartialMerkleTree> opt_partial_merkle_tree = ConsumeDeserializable<CPartialMerkleTree>(fuzzed_data_provider);
  24              if (opt_partial_merkle_tree) {
  25                  partial_merkle_tree = *opt_partial_merkle_tree;
  26              }
  27          },
  28          [&] {
  29              CMerkleBlock merkle_block;
  30              const std::optional<CBlock> opt_block = ConsumeDeserializable<CBlock>(fuzzed_data_provider, TX_WITH_WITNESS);
  31              CBloomFilter bloom_filter;
  32              std::set<Txid> txids;
  33              if (opt_block && !opt_block->vtx.empty()) {
  34                  if (fuzzed_data_provider.ConsumeBool()) {
  35                      merkle_block = CMerkleBlock{*opt_block, bloom_filter};
  36                  } else if (fuzzed_data_provider.ConsumeBool()) {
  37                      LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
  38                          txids.insert(Txid::FromUint256(ConsumeUInt256(fuzzed_data_provider)));
  39                      }
  40                      merkle_block = CMerkleBlock{*opt_block, txids};
  41                  }
  42              }
  43              partial_merkle_tree = merkle_block.txn;
  44          });
  45      (void)partial_merkle_tree.GetNumTransactions();
  46      std::vector<Txid> matches;
  47      std::vector<unsigned int> indices;
  48      (void)partial_merkle_tree.ExtractMatches(matches, indices);
  49  }
  50