Line data    Source code

       1             : // Copyright (c) 2020 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 <primitives/block.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 <cassert>
      12             : #include <cstdint>
      13             : #include <optional>
      14             : #include <string>
      15             : #include <vector>
      16             : 
      17           4 : FUZZ_TARGET(block_header)
      18             : {
      19           0 :     FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
      20           0 :     const std::optional<CBlockHeader> block_header = ConsumeDeserializable<CBlockHeader>(fuzzed_data_provider);
      21           0 :     if (!block_header) {
      22           0 :         return;
      23             :     }
      24             :     {
      25           2 :         const uint256 hash = block_header->GetHash();
      26           0 :         static const uint256 u256_max(uint256S("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"));
      27           0 :         assert(hash != u256_max);
      28           0 :         assert(block_header->GetBlockTime() == block_header->nTime);
      29           0 :         assert(block_header->IsNull() == (block_header->nBits == 0));
      30             :     }
      31             :     {
      32           0 :         CBlockHeader mut_block_header = *block_header;
      33           0 :         mut_block_header.SetNull();
      34           0 :         assert(mut_block_header.IsNull());
      35           0 :         CBlock block{*block_header};
      36           0 :         assert(block.GetBlockHeader().GetHash() == block_header->GetHash());
      37           0 :         (void)block.ToString();
      38           0 :         block.SetNull();
      39           0 :         assert(block.GetBlockHeader().GetHash() == mut_block_header.GetHash());
      40           0 :     }
      41             :     {
      42           0 :         std::optional<CBlockLocator> block_locator = ConsumeDeserializable<CBlockLocator>(fuzzed_data_provider);
      43           0 :         if (block_locator) {
      44           0 :             (void)block_locator->IsNull();
      45           0 :             block_locator->SetNull();
      46           0 :             assert(block_locator->IsNull());
      47           0 :         }
      48           0 :     }
      49           0 : }