85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2016-present, 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).
|
|
*/
|
|
|
|
#define ZSTD_STATIC_LINKING_ONLY
|
|
|
|
#include "zstd_helpers.h"
|
|
#include "fuzz_helpers.h"
|
|
#include "zstd.h"
|
|
|
|
static void set(ZSTD_CCtx *cctx, ZSTD_cParameter param, unsigned value)
|
|
{
|
|
FUZZ_ZASSERT(ZSTD_CCtx_setParameter(cctx, param, value));
|
|
}
|
|
|
|
static void setRand(ZSTD_CCtx *cctx, ZSTD_cParameter param, unsigned min,
|
|
unsigned max, uint32_t *state) {
|
|
unsigned const value = FUZZ_rand32(state, min, max);
|
|
set(cctx, param, value);
|
|
}
|
|
|
|
ZSTD_compressionParameters FUZZ_randomCParams(size_t srcSize, uint32_t *state)
|
|
{
|
|
/* Select compression parameters */
|
|
ZSTD_compressionParameters cParams;
|
|
cParams.windowLog = FUZZ_rand32(state, ZSTD_WINDOWLOG_MIN, 15);
|
|
cParams.hashLog = FUZZ_rand32(state, ZSTD_HASHLOG_MIN, 15);
|
|
cParams.chainLog = FUZZ_rand32(state, ZSTD_CHAINLOG_MIN, 16);
|
|
cParams.searchLog = FUZZ_rand32(state, ZSTD_SEARCHLOG_MIN, 9);
|
|
cParams.minMatch = FUZZ_rand32(state, ZSTD_MINMATCH_MIN,
|
|
ZSTD_MINMATCH_MAX);
|
|
cParams.targetLength = FUZZ_rand32(state, 0, 512);
|
|
cParams.strategy = FUZZ_rand32(state, ZSTD_fast, ZSTD_btultra);
|
|
return ZSTD_adjustCParams(cParams, srcSize, 0);
|
|
}
|
|
|
|
ZSTD_frameParameters FUZZ_randomFParams(uint32_t *state)
|
|
{
|
|
/* Select frame parameters */
|
|
ZSTD_frameParameters fParams;
|
|
fParams.contentSizeFlag = FUZZ_rand32(state, 0, 1);
|
|
fParams.checksumFlag = FUZZ_rand32(state, 0, 1);
|
|
fParams.noDictIDFlag = FUZZ_rand32(state, 0, 1);
|
|
return fParams;
|
|
}
|
|
|
|
ZSTD_parameters FUZZ_randomParams(size_t srcSize, uint32_t *state)
|
|
{
|
|
ZSTD_parameters params;
|
|
params.cParams = FUZZ_randomCParams(srcSize, state);
|
|
params.fParams = FUZZ_randomFParams(state);
|
|
return params;
|
|
}
|
|
|
|
void FUZZ_setRandomParameters(ZSTD_CCtx *cctx, size_t srcSize, uint32_t *state)
|
|
{
|
|
ZSTD_compressionParameters cParams = FUZZ_randomCParams(srcSize, state);
|
|
set(cctx, ZSTD_p_windowLog, cParams.windowLog);
|
|
set(cctx, ZSTD_p_hashLog, cParams.hashLog);
|
|
set(cctx, ZSTD_p_chainLog, cParams.chainLog);
|
|
set(cctx, ZSTD_p_searchLog, cParams.searchLog);
|
|
set(cctx, ZSTD_p_minMatch, cParams.minMatch);
|
|
set(cctx, ZSTD_p_targetLength, cParams.targetLength);
|
|
set(cctx, ZSTD_p_compressionStrategy, cParams.strategy);
|
|
/* Select frame parameters */
|
|
setRand(cctx, ZSTD_p_contentSizeFlag, 0, 1, state);
|
|
setRand(cctx, ZSTD_p_checksumFlag, 0, 1, state);
|
|
setRand(cctx, ZSTD_p_dictIDFlag, 0, 1, state);
|
|
setRand(cctx, ZSTD_p_forceAttachDict, 0, 2, state);
|
|
/* Select long distance matchig parameters */
|
|
setRand(cctx, ZSTD_p_enableLongDistanceMatching, 0, 1, state);
|
|
setRand(cctx, ZSTD_p_ldmHashLog, ZSTD_HASHLOG_MIN, 16, state);
|
|
setRand(cctx, ZSTD_p_ldmMinMatch, ZSTD_LDM_MINMATCH_MIN,
|
|
ZSTD_LDM_MINMATCH_MAX, state);
|
|
setRand(cctx, ZSTD_p_ldmBucketSizeLog, 0, ZSTD_LDM_BUCKETSIZELOG_MAX,
|
|
state);
|
|
setRand(cctx, ZSTD_p_ldmHashRateLog, ZSTD_LDM_HASHRATELOG_MIN,
|
|
ZSTD_LDM_HASHRATELOG_MAX, state);
|
|
}
|