57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2016-2020, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under both the BSD-style license (found in the
|
|
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
|
|
* in the COPYING file in the root directory of this source tree).
|
|
* You may select, at your option, one of the above-listed licenses.
|
|
*/
|
|
|
|
/**
|
|
* This fuzz target attempts to comprss 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 <stdlib.h>
|
|
#include <stdio.h>
|
|
#include "fuzz_helpers.h"
|
|
#include "zstd.h"
|
|
#include "zstd_errors.h"
|
|
#include "zstd_helpers.h"
|
|
#include "fuzz_data_producer.h"
|
|
|
|
static ZSTD_CCtx *cctx = NULL;
|
|
|
|
int LLVMFuzzerTestOneInput(const uint8_t *src, size_t size)
|
|
{
|
|
/* Give a random portion of src data to the producer, to use for
|
|
parameter generation. The rest will be used for (de)compression */
|
|
FUZZ_dataProducer_t *producer = FUZZ_dataProducer_create(src, size);
|
|
size = FUZZ_dataProducer_reserveDataPrefix(producer);
|
|
|
|
size_t const maxSize = ZSTD_compressBound(size);
|
|
size_t const bufSize = FUZZ_dataProducer_uint32Range(producer, 0, maxSize);
|
|
|
|
int const cLevel = FUZZ_dataProducer_int32Range(producer, kMinClevel, kMaxClevel);
|
|
|
|
if (!cctx) {
|
|
cctx = ZSTD_createCCtx();
|
|
FUZZ_ASSERT(cctx);
|
|
}
|
|
|
|
void *rBuf = FUZZ_malloc(bufSize);
|
|
size_t const ret = ZSTD_compressCCtx(cctx, rBuf, bufSize, src, size, cLevel);
|
|
if (ZSTD_isError(ret)) {
|
|
FUZZ_ASSERT(ZSTD_getErrorCode(ret) == ZSTD_error_dstSize_tooSmall);
|
|
}
|
|
free(rBuf);
|
|
FUZZ_dataProducer_free(producer);
|
|
#ifndef STATEFUL_FUZZING
|
|
ZSTD_freeCCtx(cctx); cctx = NULL;
|
|
#endif
|
|
return 0;
|
|
}
|