Line data    Source code

       1             : // Copyright (c) 2019-2022 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 <arith_uint256.h>
       6             : #include <common/args.h>
       7             : #include <common/system.h>
       8             : #include <compressor.h>
       9             : #include <consensus/amount.h>
      10             : #include <consensus/merkle.h>
      11             : #include <core_io.h>
      12             : #include <crypto/common.h>
      13             : #include <crypto/siphash.h>
      14             : #include <key_io.h>
      15             : #include <memusage.h>
      16             : #include <netbase.h>
      17             : #include <policy/policy.h>
      18             : #include <policy/settings.h>
      19             : #include <pow.h>
      20             : #include <protocol.h>
      21             : #include <pubkey.h>
      22             : #include <script/script.h>
      23             : #include <serialize.h>
      24             : #include <streams.h>
      25             : #include <test/fuzz/FuzzedDataProvider.h>
      26             : #include <test/fuzz/fuzz.h>
      27             : #include <test/fuzz/util.h>
      28             : #include <uint256.h>
      29             : #include <univalue.h>
      30             : #include <util/chaintype.h>
      31             : #include <util/check.h>
      32             : #include <util/moneystr.h>
      33             : #include <util/overflow.h>
      34             : #include <util/strencodings.h>
      35             : #include <util/string.h>
      36             : #include <version.h>
      37             : 
      38             : #include <cassert>
      39             : #include <chrono>
      40             : #include <limits>
      41             : #include <set>
      42             : #include <vector>
      43             : 
      44           0 : void initialize_integer()
      45             : {
      46           0 :     SelectParams(ChainType::REGTEST);
      47           0 : }
      48             : 
      49           4 : FUZZ_TARGET(integer, .init = initialize_integer)
      50             : {
      51           0 :     if (buffer.size() < sizeof(uint256) + sizeof(uint160)) {
      52           0 :         return;
      53             :     }
      54           0 :     FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
      55           0 :     const uint256 u256(fuzzed_data_provider.ConsumeBytes<unsigned char>(sizeof(uint256)));
      56           0 :     const uint160 u160(fuzzed_data_provider.ConsumeBytes<unsigned char>(sizeof(uint160)));
      57           0 :     const uint64_t u64 = fuzzed_data_provider.ConsumeIntegral<uint64_t>();
      58           0 :     const int64_t i64 = fuzzed_data_provider.ConsumeIntegral<int64_t>();
      59           0 :     const uint32_t u32 = fuzzed_data_provider.ConsumeIntegral<uint32_t>();
      60           0 :     const int32_t i32 = fuzzed_data_provider.ConsumeIntegral<int32_t>();
      61           0 :     const uint16_t u16 = fuzzed_data_provider.ConsumeIntegral<uint16_t>();
      62           0 :     const int16_t i16 = fuzzed_data_provider.ConsumeIntegral<int16_t>();
      63           0 :     const uint8_t u8 = fuzzed_data_provider.ConsumeIntegral<uint8_t>();
      64           0 :     const int8_t i8 = fuzzed_data_provider.ConsumeIntegral<int8_t>();
      65             :     // We cannot assume a specific value of std::is_signed<char>::value:
      66             :     // ConsumeIntegral<char>() instead of casting from {u,}int8_t.
      67           0 :     const char ch = fuzzed_data_provider.ConsumeIntegral<char>();
      68           0 :     const bool b = fuzzed_data_provider.ConsumeBool();
      69             : 
      70           0 :     const Consensus::Params& consensus_params = Params().GetConsensus();
      71           0 :     (void)CheckProofOfWork(u256, u32, consensus_params);
      72           0 :     if (u64 <= MAX_MONEY) {
      73           0 :         const uint64_t compressed_money_amount = CompressAmount(u64);
      74           2 :         assert(u64 == DecompressAmount(compressed_money_amount));
      75           0 :         static const uint64_t compressed_money_amount_max = CompressAmount(MAX_MONEY - 1);
      76           0 :         assert(compressed_money_amount <= compressed_money_amount_max);
      77           0 :     } else {
      78           0 :         (void)CompressAmount(u64);
      79             :     }
      80           0 :     static const uint256 u256_min(uint256S("0000000000000000000000000000000000000000000000000000000000000000"));
      81           0 :     static const uint256 u256_max(uint256S("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"));
      82           0 :     const std::vector<uint256> v256{u256, u256_min, u256_max};
      83           0 :     (void)ComputeMerkleRoot(v256);
      84           0 :     (void)CountBits(u64);
      85           0 :     (void)DecompressAmount(u64);
      86             :     {
      87           0 :         if (std::optional<CAmount> parsed = ParseMoney(FormatMoney(i64))) {
      88           0 :             assert(parsed.value() == i64);
      89           0 :         }
      90             :     }
      91           0 :     (void)GetSizeOfCompactSize(u64);
      92           0 :     (void)GetSpecialScriptSize(u32);
      93           0 :     if (!MultiplicationOverflow(i64, static_cast<int64_t>(u32)) && !AdditionOverflow(i64, static_cast<int64_t>(4)) && !AdditionOverflow(i64 * u32, static_cast<int64_t>(4))) {
      94           0 :         (void)GetVirtualTransactionSize(i64, i64, u32);
      95           0 :     }
      96           0 :     (void)HexDigit(ch);
      97           0 :     (void)MoneyRange(i64);
      98           0 :     (void)ToString(i64);
      99           0 :     (void)IsDigit(ch);
     100           0 :     (void)IsSpace(ch);
     101           0 :     (void)IsSwitchChar(ch);
     102           0 :     (void)memusage::DynamicUsage(ch);
     103           0 :     (void)memusage::DynamicUsage(i16);
     104           0 :     (void)memusage::DynamicUsage(i32);
     105           0 :     (void)memusage::DynamicUsage(i64);
     106           0 :     (void)memusage::DynamicUsage(i8);
     107           0 :     (void)memusage::DynamicUsage(u16);
     108           0 :     (void)memusage::DynamicUsage(u32);
     109           0 :     (void)memusage::DynamicUsage(u64);
     110           0 :     (void)memusage::DynamicUsage(u8);
     111           0 :     const unsigned char uch = static_cast<unsigned char>(u8);
     112           0 :     (void)memusage::DynamicUsage(uch);
     113             :     {
     114           0 :         const std::set<int64_t> i64s{i64, static_cast<int64_t>(u64)};
     115           0 :         const size_t dynamic_usage = memusage::DynamicUsage(i64s);
     116           0 :         const size_t incremental_dynamic_usage = memusage::IncrementalDynamicUsage(i64s);
     117           0 :         assert(dynamic_usage == incremental_dynamic_usage * i64s.size());
     118           0 :     }
     119           0 :     (void)MillisToTimeval(i64);
     120           0 :     (void)SighashToStr(uch);
     121           0 :     (void)SipHashUint256(u64, u64, u256);
     122           0 :     (void)SipHashUint256Extra(u64, u64, u256, u32);
     123           0 :     (void)ToLower(ch);
     124           0 :     (void)ToUpper(ch);
     125             :     {
     126           0 :         if (std::optional<CAmount> parsed = ParseMoney(ValueFromAmount(i64).getValStr())) {
     127           0 :             assert(parsed.value() == i64);
     128           0 :         }
     129             :     }
     130           0 :     if (i32 >= 0 && i32 <= 16) {
     131           0 :         assert(i32 == CScript::DecodeOP_N(CScript::EncodeOP_N(i32)));
     132           0 :     }
     133             : 
     134           0 :     const std::chrono::seconds seconds{i64};
     135           0 :     assert(count_seconds(seconds) == i64);
     136             : 
     137           0 :     const CScriptNum script_num{i64};
     138           0 :     (void)script_num.getint();
     139           0 :     (void)script_num.getvch();
     140             : 
     141           0 :     const arith_uint256 au256 = UintToArith256(u256);
     142           0 :     assert(ArithToUint256(au256) == u256);
     143           0 :     assert(uint256S(au256.GetHex()) == u256);
     144           0 :     (void)au256.bits();
     145           0 :     (void)au256.GetCompact(/* fNegative= */ false);
     146           0 :     (void)au256.GetCompact(/* fNegative= */ true);
     147           0 :     (void)au256.getdouble();
     148           0 :     (void)au256.GetHex();
     149           0 :     (void)au256.GetLow64();
     150           0 :     (void)au256.size();
     151           0 :     (void)au256.ToString();
     152             : 
     153           0 :     const CKeyID key_id{u160};
     154           0 :     const CScriptID script_id{u160};
     155             : 
     156             :     {
     157           0 :         DataStream stream{};
     158             : 
     159           0 :         uint256 deserialized_u256;
     160           0 :         stream << u256;
     161           0 :         stream >> deserialized_u256;
     162           0 :         assert(u256 == deserialized_u256 && stream.empty());
     163             : 
     164           0 :         uint160 deserialized_u160;
     165           0 :         stream << u160;
     166           0 :         stream >> deserialized_u160;
     167           0 :         assert(u160 == deserialized_u160 && stream.empty());
     168             : 
     169             :         uint64_t deserialized_u64;
     170           0 :         stream << u64;
     171           0 :         stream >> deserialized_u64;
     172           0 :         assert(u64 == deserialized_u64 && stream.empty());
     173             : 
     174             :         int64_t deserialized_i64;
     175           0 :         stream << i64;
     176           0 :         stream >> deserialized_i64;
     177           0 :         assert(i64 == deserialized_i64 && stream.empty());
     178             : 
     179             :         uint32_t deserialized_u32;
     180           0 :         stream << u32;
     181           0 :         stream >> deserialized_u32;
     182           0 :         assert(u32 == deserialized_u32 && stream.empty());
     183             : 
     184             :         int32_t deserialized_i32;
     185           0 :         stream << i32;
     186           0 :         stream >> deserialized_i32;
     187           0 :         assert(i32 == deserialized_i32 && stream.empty());
     188             : 
     189             :         uint16_t deserialized_u16;
     190           0 :         stream << u16;
     191           0 :         stream >> deserialized_u16;
     192           0 :         assert(u16 == deserialized_u16 && stream.empty());
     193             : 
     194             :         int16_t deserialized_i16;
     195           0 :         stream << i16;
     196           0 :         stream >> deserialized_i16;
     197           0 :         assert(i16 == deserialized_i16 && stream.empty());
     198             : 
     199             :         uint8_t deserialized_u8;
     200           0 :         stream << u8;
     201           0 :         stream >> deserialized_u8;
     202           0 :         assert(u8 == deserialized_u8 && stream.empty());
     203             : 
     204             :         int8_t deserialized_i8;
     205           0 :         stream << i8;
     206           0 :         stream >> deserialized_i8;
     207           0 :         assert(i8 == deserialized_i8 && stream.empty());
     208             : 
     209             :         bool deserialized_b;
     210           0 :         stream << b;
     211           0 :         stream >> deserialized_b;
     212           0 :         assert(b == deserialized_b && stream.empty());
     213           0 :     }
     214             : 
     215             :     {
     216           0 :         const ServiceFlags service_flags = (ServiceFlags)u64;
     217           0 :         (void)HasAllDesirableServiceFlags(service_flags);
     218           0 :         (void)MayHaveUsefulAddressDB(service_flags);
     219             :     }
     220             : 
     221             :     {
     222           0 :         DataStream stream{};
     223             : 
     224           0 :         ser_writedata64(stream, u64);
     225           0 :         const uint64_t deserialized_u64 = ser_readdata64(stream);
     226           0 :         assert(u64 == deserialized_u64 && stream.empty());
     227             : 
     228           0 :         ser_writedata32(stream, u32);
     229           0 :         const uint32_t deserialized_u32 = ser_readdata32(stream);
     230           0 :         assert(u32 == deserialized_u32 && stream.empty());
     231             : 
     232           0 :         ser_writedata32be(stream, u32);
     233           0 :         const uint32_t deserialized_u32be = ser_readdata32be(stream);
     234           0 :         assert(u32 == deserialized_u32be && stream.empty());
     235             : 
     236           0 :         ser_writedata16(stream, u16);
     237           0 :         const uint16_t deserialized_u16 = ser_readdata16(stream);
     238           0 :         assert(u16 == deserialized_u16 && stream.empty());
     239             : 
     240           0 :         ser_writedata16be(stream, u16);
     241           0 :         const uint16_t deserialized_u16be = ser_readdata16be(stream);
     242           0 :         assert(u16 == deserialized_u16be && stream.empty());
     243             : 
     244           0 :         ser_writedata8(stream, u8);
     245           0 :         const uint8_t deserialized_u8 = ser_readdata8(stream);
     246           0 :         assert(u8 == deserialized_u8 && stream.empty());
     247           0 :     }
     248             : 
     249             :     {
     250           0 :         DataStream stream{};
     251             : 
     252           0 :         WriteCompactSize(stream, u64);
     253             :         try {
     254           0 :             const uint64_t deserialized_u64 = ReadCompactSize(stream);
     255           0 :             assert(u64 == deserialized_u64 && stream.empty());
     256           0 :         } catch (const std::ios_base::failure&) {
     257           0 :         }
     258           0 :     }
     259             : 
     260             :     try {
     261           0 :         CHECK_NONFATAL(b);
     262           0 :     } catch (const NonFatalCheckError&) {
     263           0 :     }
     264           0 : }