cuckoocache.cpp raw

   1  // Copyright (c) 2020-2021 The Limenka 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 <cuckoocache.h>
   6  #include <script/sigcache.h>
   7  #include <test/fuzz/FuzzedDataProvider.h>
   8  #include <test/fuzz/fuzz.h>
   9  #include <test/fuzz/util.h>
  10  #include <test/util/setup_common.h>
  11  
  12  #include <cstdint>
  13  #include <string>
  14  #include <vector>
  15  
  16  namespace {
  17  FuzzedDataProvider* fuzzed_data_provider_ptr = nullptr;
  18  
  19  struct RandomHasher {
  20      template <uint8_t>
  21      uint32_t operator()(const bool& /* unused */) const
  22      {
  23          assert(fuzzed_data_provider_ptr != nullptr);
  24          return fuzzed_data_provider_ptr->ConsumeIntegral<uint32_t>();
  25      }
  26  };
  27  } // namespace
  28  
  29  FUZZ_TARGET(cuckoocache)
  30  {
  31      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  32      fuzzed_data_provider_ptr = &fuzzed_data_provider;
  33      CuckooCache::cache<int, RandomHasher> cuckoo_cache{};
  34      if (fuzzed_data_provider.ConsumeBool()) {
  35          const size_t megabytes = fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 16);
  36          cuckoo_cache.setup_bytes(megabytes << 20);
  37      } else {
  38          cuckoo_cache.setup(fuzzed_data_provider.ConsumeIntegralInRange<uint32_t>(0, 4096));
  39      }
  40      LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
  41          if (fuzzed_data_provider.ConsumeBool()) {
  42              cuckoo_cache.insert(fuzzed_data_provider.ConsumeBool());
  43          } else {
  44              auto e = fuzzed_data_provider.ConsumeBool();
  45              auto erase = fuzzed_data_provider.ConsumeBool();
  46              cuckoo_cache.contains(e, erase);
  47          }
  48      }
  49      fuzzed_data_provider_ptr = nullptr;
  50  }
  51