diff options
Diffstat (limited to 'ossfuzz/compress_frame_fuzzer.c')
-rw-r--r-- | ossfuzz/compress_frame_fuzzer.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/ossfuzz/compress_frame_fuzzer.c b/ossfuzz/compress_frame_fuzzer.c new file mode 100644 index 0000000..75c609f --- /dev/null +++ b/ossfuzz/compress_frame_fuzzer.c @@ -0,0 +1,42 @@ +/** + * This fuzz target attempts to compress the fuzzed data with the simple + * compression function with an output buffer that may be too small to + * ensure that the compressor never crashes. + */ + +#include <stddef.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> + +#include "fuzz_helpers.h" +#include "lz4.h" +#include "lz4frame.h" +#include "lz4_helpers.h" + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + uint32_t seed = FUZZ_seed(&data, &size); + LZ4F_preferences_t const prefs = FUZZ_randomPreferences(&seed); + size_t const compressBound = LZ4F_compressFrameBound(size, &prefs); + size_t const dstCapacity = FUZZ_rand32(&seed, 0, compressBound); + char* const dst = (char*)malloc(dstCapacity); + char* const rt = (char*)malloc(size); + + FUZZ_ASSERT(dst); + FUZZ_ASSERT(rt); + + /* If compression succeeds it must round trip correctly. */ + size_t const dstSize = + LZ4F_compressFrame(dst, dstCapacity, data, size, &prefs); + if (!LZ4F_isError(dstSize)) { + size_t const rtSize = FUZZ_decompressFrame(rt, size, dst, dstSize); + FUZZ_ASSERT_MSG(rtSize == size, "Incorrect regenerated size"); + FUZZ_ASSERT_MSG(!memcmp(data, rt, size), "Corruption!"); + } + + free(dst); + free(rt); + + return 0; +} |