1 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
2 // See https://llvm.org/LICENSE.txt for license information.
3 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
4 
5 // Test strstr and strcasestr hooks.
6 #include <cstdint>
7 #include <cstdio>
8 #include <cstdlib>
9 #include <string.h>
10 #include <string>
11 
12 // Windows does not have strcasestr and memmem, so we are not testing them.
13 #ifdef _WIN32
14 #define strcasestr strstr
15 #define memmem(a, b, c, d) true
16 #endif
17 
18 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
19   if (Size < 4) return 0;
20   std::string s(reinterpret_cast<const char*>(Data), Size);
21   if (strstr(s.c_str(), "FUZZ") &&
22       strcasestr(s.c_str(), "aBcD") &&
23       memmem(s.data(), s.size(), "kuku", 4)
24       ) {
25     fprintf(stderr, "BINGO\n");
26     exit(1);
27   }
28   return 0;
29 }
30