Branch data     Line data    Source code

       1                 :            : // Copyright (c) 2020-2021 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 <pubkey.h>
       6                 :            : #include <script/descriptor.h>
       7                 :            : #include <test/fuzz/FuzzedDataProvider.h>
       8                 :            : #include <test/fuzz/fuzz.h>
       9                 :            : #include <test/fuzz/util.h>
      10                 :            : 
      11                 :            : #include <cstdint>
      12                 :            : #include <optional>
      13                 :            : #include <string>
      14                 :            : #include <vector>
      15                 :            : 
      16 [ +  - ][ +  - ]:          6 : FUZZ_TARGET(script_descriptor_cache)
      17                 :            : {
      18                 :          0 :     FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
      19                 :          0 :     DescriptorCache descriptor_cache;
      20 [ #  # ][ #  # ]:          0 :     LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
                 [ #  # ]
      21         [ #  # ]:          0 :         const std::vector<uint8_t> code = fuzzed_data_provider.ConsumeBytes<uint8_t>(BIP32_EXTKEY_SIZE);
      22         [ #  # ]:          0 :         if (code.size() == BIP32_EXTKEY_SIZE) {
      23         [ #  # ]:          0 :             CExtPubKey xpub;
      24         [ #  # ]:          0 :             xpub.Decode(code.data());
      25         [ #  # ]:          0 :             const uint32_t key_exp_pos = fuzzed_data_provider.ConsumeIntegral<uint32_t>();
      26         [ #  # ]:          0 :             CExtPubKey xpub_fetched;
      27 [ #  # ][ #  # ]:          0 :             if (fuzzed_data_provider.ConsumeBool()) {
      28         [ #  # ]:          0 :                 (void)descriptor_cache.GetCachedParentExtPubKey(key_exp_pos, xpub_fetched);
      29         [ #  # ]:          0 :                 descriptor_cache.CacheParentExtPubKey(key_exp_pos, xpub);
      30 [ #  # ][ #  # ]:          2 :                 assert(descriptor_cache.GetCachedParentExtPubKey(key_exp_pos, xpub_fetched));
      31                 :          0 :             } else {
      32         [ #  # ]:          0 :                 const uint32_t der_index = fuzzed_data_provider.ConsumeIntegral<uint32_t>();
      33         [ #  # ]:          0 :                 (void)descriptor_cache.GetCachedDerivedExtPubKey(key_exp_pos, der_index, xpub_fetched);
      34         [ #  # ]:          0 :                 descriptor_cache.CacheDerivedExtPubKey(key_exp_pos, der_index, xpub);
      35 [ #  # ][ #  # ]:          0 :                 assert(descriptor_cache.GetCachedDerivedExtPubKey(key_exp_pos, der_index, xpub_fetched));
      36                 :            :             }
      37 [ #  # ][ #  # ]:          0 :             assert(xpub == xpub_fetched);
      38                 :          0 :         }
      39         [ #  # ]:          0 :         (void)descriptor_cache.GetCachedParentExtPubKeys();
      40         [ #  # ]:          0 :         (void)descriptor_cache.GetCachedDerivedExtPubKeys();
      41                 :          0 :     }
      42                 :          0 : }