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101 lines
3.2 KiB
101 lines
3.2 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file fuzzHelper.h
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* @author Dimitry Khokhlov <winsvega@mail.ru>
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* @date 2015
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*/
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#include <string>
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#include <boost/random.hpp>
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#include <boost/filesystem/path.hpp>
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#include <test/TestHelper.h>
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#include <libdevcore/CommonIO.h>
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#include <libdevcore/CommonData.h>
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#include <libevmcore/Instruction.h>
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#pragma once
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namespace dev
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{
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namespace test
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{
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typedef boost::random::uniform_int_distribution<> boostIntDistrib;
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typedef boost::random::discrete_distribution<> boostDescreteDistrib;
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typedef boost::uniform_int<uint64_t> boostUint64Distrib;
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typedef boost::random::variate_generator<boost::mt19937&, boostIntDistrib > boostIntGenerator;
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typedef boost::random::variate_generator<boost::mt19937&, boostDescreteDistrib > boostWeightGenerator;
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typedef boost::random::variate_generator<boost::mt19937&, boostUint64Distrib > boostUInt64Generator;
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struct RandomCodeOptions
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{
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public:
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RandomCodeOptions();
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void setWeight(dev::eth::Instruction _opCode, int _weight);
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void addAddress(dev::Address const& _address);
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dev::Address getRandomAddress() const;
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bool useUndefinedOpCodes;
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int smartCodeProbability;
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boostDescreteDistrib opCodeProbability;
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private:
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void setWeights();
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std::map<int, int> mapWeights;
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std::vector<dev::Address> addressList;
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};
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enum class SizeStrictness
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{
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Strict,
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Random
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};
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class RandomCode
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{
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public:
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/// Generate random vm code
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static std::string generate(int _maxOpNumber = 1, RandomCodeOptions _options = RandomCodeOptions());
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/// Generate random byte string of a given length
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static std::string rndByteSequence(int _length = 1, SizeStrictness _sizeType = SizeStrictness::Strict);
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/// Generate random int64
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static std::string randomUniIntHex(u256 _maxVal = 0);
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static int randomUniInt();
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private:
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static std::string fillArguments(dev::eth::Instruction _opcode, RandomCodeOptions const& _options);
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static std::string getPushCode(int _value);
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static std::string getPushCode(std::string const& _hex);
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static void refreshSeed();
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static boost::random::mt19937 gen; ///< Random generator
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static boostIntDistrib opCodeDist; ///< 0..255 opcodes
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static boostIntDistrib opLengDist; ///< 1..32 byte string
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static boostIntDistrib uniIntDist; ///< 0..0x7fffffff
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static boostUint64Distrib uInt64Dist; ///< 0..2**64
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static boostIntGenerator randUniIntGen; ///< Generate random UniformInt from uniIntDist
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static boostIntGenerator randOpCodeGen; ///< Generate random value from opCodeDist
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static boostIntGenerator randOpLengGen; ///< Generate random length from opLengDist
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static boostUInt64Generator randUInt64Gen; ///< Generate random uInt64
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};
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}
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}
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