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 #include "fuzz_data_producer.h"
16
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)17 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
18 {
19 FUZZ_dataProducer_t* producer = FUZZ_dataProducer_create(data, size);
20 LZ4F_preferences_t const prefs = FUZZ_dataProducer_preferences(producer);
21 size = FUZZ_dataProducer_remainingBytes(producer);
22
23 size_t const dstCapacity = LZ4F_compressFrameBound(LZ4_compressBound(size), &prefs);
24 char* const dst = (char*)malloc(dstCapacity);
25 char* const rt = (char*)malloc(FUZZ_dataProducer_remainingBytes(producer));
26
27 FUZZ_ASSERT(dst);
28 FUZZ_ASSERT(rt);
29
30 /* Compression must succeed and round trip correctly. */
31 size_t const dstSize =
32 LZ4F_compressFrame(dst, dstCapacity, data, size, &prefs);
33 FUZZ_ASSERT(!LZ4F_isError(dstSize));
34 size_t const rtSize = FUZZ_decompressFrame(rt, size, dst, dstSize);
35 FUZZ_ASSERT_MSG(rtSize == size, "Incorrect regenerated size");
36 FUZZ_ASSERT_MSG(!memcmp(data, rt, size), "Corruption!");
37
38 free(dst);
39 free(rt);
40 FUZZ_dataProducer_free(producer);
41
42 return 0;
43 }
44