1 /**
2 * This fuzz target performs a lz4 round-trip test (compress & decompress),
3 * compares the result with the original, and calls abort() on corruption.
4 */
5
6 #include <stddef.h>
7 #include <stdint.h>
8 #include <stdlib.h>
9 #include <string.h>
10
11 #include "fuzz_helpers.h"
12 #include "lz4.h"
13 #include "lz4hc.h"
14
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)15 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
16 {
17 uint32_t seed = FUZZ_seed(&data, &size);
18 size_t const dstCapacity = LZ4_compressBound(size);
19 char* const dst = (char*)malloc(dstCapacity);
20 char* const rt = (char*)malloc(size);
21 int const level = FUZZ_rand32(&seed, LZ4HC_CLEVEL_MIN, LZ4HC_CLEVEL_MAX);
22
23 FUZZ_ASSERT(dst);
24 FUZZ_ASSERT(rt);
25
26 /* Compression must succeed and round trip correctly. */
27 int const dstSize = LZ4_compress_HC((const char*)data, dst, size,
28 dstCapacity, level);
29 FUZZ_ASSERT(dstSize > 0);
30
31 int const rtSize = LZ4_decompress_safe(dst, rt, dstSize, size);
32 FUZZ_ASSERT_MSG(rtSize == size, "Incorrect size");
33 FUZZ_ASSERT_MSG(!memcmp(data, rt, size), "Corruption!");
34
35 free(dst);
36 free(rt);
37
38 return 0;
39 }
40