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 "fuzz_data_producer.h"
13 #include "lz4.h"
14 #include "lz4hc.h"
15
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)16 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
17 {
18 FUZZ_dataProducer_t *producer = FUZZ_dataProducer_create(data, size);
19 int const level = FUZZ_dataProducer_range32(producer,
20 LZ4HC_CLEVEL_MIN, LZ4HC_CLEVEL_MAX);
21 size = FUZZ_dataProducer_remainingBytes(producer);
22
23 size_t const dstCapacity = LZ4_compressBound(size);
24 char* const dst = (char*)malloc(dstCapacity);
25 char* const rt = (char*)malloc(size);
26
27 FUZZ_ASSERT(dst);
28 FUZZ_ASSERT(rt);
29
30 /* Compression must succeed and round trip correctly. */
31 int const dstSize = LZ4_compress_HC((const char*)data, dst, size,
32 dstCapacity, level);
33 FUZZ_ASSERT(dstSize > 0);
34
35 int const rtSize = LZ4_decompress_safe(dst, rt, dstSize, size);
36 FUZZ_ASSERT_MSG(rtSize == size, "Incorrect size");
37 FUZZ_ASSERT_MSG(!memcmp(data, rt, size), "Corruption!");
38
39 free(dst);
40 free(rt);
41 FUZZ_dataProducer_free(producer);
42
43 return 0;
44 }
45
