forked from OSchip/llvm-project
58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
|
// 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";
|
||
|
|
|
||
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
|
||
|
|
assert(Data);
|
||
|
|
std::string Str(reinterpret_cast<const char *>(Data), Size);
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|