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tests/thirdparty/Fuzzer/test/CustomCrossOverTest.cpp
63 строки
2 KB
Niels Lohmann
Reorganize directories (#3462)
01 май 2022, 10:41
Не верифицирован
01 май 2022, 10:41
b21c345
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// This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // Simple test for a cutom mutator. #include <assert.h> #include <cstddef> #include <cstdint> #include <cstdlib> #include <iostream> #include <random> #include <string.h> #include "FuzzerInterface.h" static const char *Separator = "-_^_-"; static const char *Target = "012-_^_-abc"; static volatile int sink; extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { assert(Data); std::string Str(reinterpret_cast<const char *>(Data), Size); // Ensure that two different elements exist in the corpus. if (Size && Data[0] == '0') sink++; if (Size && Data[0] == 'a') sink--; if (Str.find(Target) != std::string::npos) { std::cout << "BINGO; Found the target, exiting\n"; exit(1); } return 0; } extern "C" size_t LLVMFuzzerCustomCrossOver(const uint8_t *Data1, size_t Size1, const uint8_t *Data2, size_t Size2, uint8_t *Out, size_t MaxOutSize, unsigned int Seed) { static bool Printed; static size_t SeparatorLen = strlen(Separator); if (!Printed) { std::cerr << "In LLVMFuzzerCustomCrossover\n"; Printed = true; } std::mt19937 R(Seed); size_t Offset1 = 0; size_t Len1 = R() % (Size1 - Offset1); size_t Offset2 = 0; size_t Len2 = R() % (Size2 - Offset2); size_t Size = Len1 + Len2 + SeparatorLen; if (Size > MaxOutSize) return 0; memcpy(Out, Data1 + Offset1, Len1); memcpy(Out + Len1, Separator, SeparatorLen); memcpy(Out + Len1 + SeparatorLen, Data2 + Offset2, Len2); return Len1 + Len2 + SeparatorLen; }