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 <common/bloom.h>
 6  #include <test/fuzz/FuzzedDataProvider.h>
 7  #include <test/fuzz/fuzz.h>
 8  #include <test/fuzz/util.h>
 9  #include <test/util/random.h>
10  #include <uint256.h>
11  
12  #include <cassert>
13  #include <cstdint>
14  #include <optional>
15  #include <string>
16  #include <vector>
17  
18  FUZZ_TARGET(rolling_bloom_filter)
19  {
20      SeedRandomStateForTest(SeedRand::ZEROS);
21      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
22  
23      CRollingBloomFilter rolling_bloom_filter{
24          fuzzed_data_provider.ConsumeIntegralInRange<unsigned int>(1, 1000),
25          0.999 / fuzzed_data_provider.ConsumeIntegralInRange<unsigned int>(1, std::numeric_limits<unsigned int>::max())};
26      LIMITED_WHILE(fuzzed_data_provider.remaining_bytes() > 0, 3000)
27      {
28          CallOneOf(
29              fuzzed_data_provider,
30              [&] {
31                  const std::vector<unsigned char> b = ConsumeRandomLengthByteVector(fuzzed_data_provider);
32                  (void)rolling_bloom_filter.contains(b);
33                  rolling_bloom_filter.insert(b);
34                  const bool present = rolling_bloom_filter.contains(b);
35                  assert(present);
36              },
37              [&] {
38                  const uint256 u256{ConsumeUInt256(fuzzed_data_provider)};
39                  (void)rolling_bloom_filter.contains(u256);
40                  rolling_bloom_filter.insert(u256);
41                  const bool present = rolling_bloom_filter.contains(u256);
42                  assert(present);
43              },
44              [&] {
45                  rolling_bloom_filter.reset();
46              });
47      }
48  }