1 // This file is distributed under the University of Illinois Open Source 2 // License. See LICENSE.TXT for details. 3 4 // Simple test for a fuzzer. The fuzzer must find the interesting switch value. 5 #include <cstdint> 6 #include <cstdlib> 7 #include <cstdio> 8 #include <cstring> 9 #include <cstddef> 10 11 static volatile int Sink; 12 13 template<class T> 14 bool Switch(const uint8_t *Data, size_t Size) { 15 T X; 16 if (Size < sizeof(X)) return false; 17 memcpy(&X, Data, sizeof(X)); 18 switch (X) { 19 case 1: Sink = __LINE__; break; 20 case 101: Sink = __LINE__; break; 21 case 1001: Sink = __LINE__; break; 22 case 10001: Sink = __LINE__; break; 23 case 100001: Sink = __LINE__; break; 24 case 1000001: Sink = __LINE__; break; 25 case 10000001: Sink = __LINE__; break; 26 case 100000001: return true; 27 } 28 return false; 29 } 30 31 bool ShortSwitch(const uint8_t *Data, size_t Size) { 32 short X; 33 if (Size < sizeof(short)) return false; 34 memcpy(&X, Data, sizeof(short)); 35 switch(X) { 36 case 42: Sink = __LINE__; break; 37 case 402: Sink = __LINE__; break; 38 case 4002: Sink = __LINE__; break; 39 case 5002: Sink = __LINE__; break; 40 case 7002: Sink = __LINE__; break; 41 case 9002: Sink = __LINE__; break; 42 case 14002: Sink = __LINE__; break; 43 case 21402: return true; 44 } 45 return false; 46 } 47 48 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { 49 if (Size >= 4 && Switch<int>(Data, Size) && 50 Size >= 12 && Switch<uint64_t>(Data + 4, Size - 4) && 51 Size >= 14 && ShortSwitch(Data + 12, 2) 52 ) { 53 fprintf(stderr, "BINGO; Found the target, exiting\n"); 54 exit(1); 55 } 56 return 0; 57 } 58 59
