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 "lz4frame.h"
14 #include "lz4_helpers.h"
15
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)16 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
17 {
18 uint32_t seed = FUZZ_seed(&data, &size);
19 LZ4F_preferences_t const prefs = FUZZ_randomPreferences(&seed);
20 size_t const dstCapacity = LZ4F_compressFrameBound(size, &prefs);
21 char* const dst = (char*)malloc(dstCapacity);
22 char* const rt = (char*)malloc(size);
23
24 FUZZ_ASSERT(dst);
25 FUZZ_ASSERT(rt);
26
27 /* Compression must succeed and round trip correctly. */
28 size_t const dstSize =
29 LZ4F_compressFrame(dst, dstCapacity, data, size, &prefs);
30 FUZZ_ASSERT(!LZ4F_isError(dstSize));
31 size_t const rtSize = FUZZ_decompressFrame(rt, size, dst, dstSize);
32 FUZZ_ASSERT_MSG(rtSize == size, "Incorrect regenerated size");
33 FUZZ_ASSERT_MSG(!memcmp(data, rt, size), "Corruption!");
34
35 free(dst);
36 free(rt);
37
38 return 0;
39 }
40