git / moonbite-core / src/test/fuzz/signature_checker.cpp · raw

// Copyright (c) 2009-2020 The Bitcoin Core developers// Distributed under the MIT software license, see the accompanying// file COPYING or http://www.opensource.org/licenses/mit-license.php.#include <pubkey.h>#include <script/interpreter.h>#include <test/fuzz/FuzzedDataProvider.h>#include <test/fuzz/fuzz.h>#include <util/memory.h>#include <cstdint>#include <limits>#include <string>#include <vector>void initialize(){    static const auto verify_handle = MakeUnique<ECCVerifyHandle>();}namespace {class FuzzedSignatureChecker : public BaseSignatureChecker{    FuzzedDataProvider& m_fuzzed_data_provider;public:    FuzzedSignatureChecker(FuzzedDataProvider& fuzzed_data_provider) : m_fuzzed_data_provider(fuzzed_data_provider)    {    }    bool CheckECDSASignature(const std::vector<unsigned char>& scriptSig, const std::vector<unsigned char>& vchPubKey, const CScript& scriptCode, SigVersion sigversion) const override    {        return m_fuzzed_data_provider.ConsumeBool();    }    bool CheckSchnorrSignature(Span<const unsigned char> sig, Span<const unsigned char> pubkey, SigVersion sigversion, const ScriptExecutionData& execdata, ScriptError* serror = nullptr) const override    {        return m_fuzzed_data_provider.ConsumeBool();    }    bool CheckLockTime(const CScriptNum& nLockTime) const override    {        return m_fuzzed_data_provider.ConsumeBool();    }    bool CheckSequence(const CScriptNum& nSequence) const override    {        return m_fuzzed_data_provider.ConsumeBool();    }    virtual ~FuzzedSignatureChecker() {}};} // namespacevoid test_one_input(const std::vector<uint8_t>& buffer){    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());    const unsigned int flags = fuzzed_data_provider.ConsumeIntegral<unsigned int>();    const SigVersion sig_version = fuzzed_data_provider.PickValueInArray({SigVersion::BASE, SigVersion::WITNESS_V0});    const std::string script_string_1 = fuzzed_data_provider.ConsumeRandomLengthString(65536);    const std::vector<uint8_t> script_bytes_1{script_string_1.begin(), script_string_1.end()};    const std::string script_string_2 = fuzzed_data_provider.ConsumeRandomLengthString(65536);    const std::vector<uint8_t> script_bytes_2{script_string_2.begin(), script_string_2.end()};    std::vector<std::vector<unsigned char>> stack;    (void)EvalScript(stack, {script_bytes_1.begin(), script_bytes_1.end()}, flags, FuzzedSignatureChecker(fuzzed_data_provider), sig_version, nullptr);    if ((flags & SCRIPT_VERIFY_CLEANSTACK) != 0 && ((flags & SCRIPT_VERIFY_P2SH) == 0 || (flags & SCRIPT_VERIFY_WITNESS) == 0)) {        return;    }    if ((flags & SCRIPT_VERIFY_WITNESS) != 0 && (flags & SCRIPT_VERIFY_P2SH) == 0) {        return;    }    (void)VerifyScript({script_bytes_1.begin(), script_bytes_1.end()}, {script_bytes_2.begin(), script_bytes_2.end()}, nullptr, flags, FuzzedSignatureChecker(fuzzed_data_provider), nullptr);}