47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/**
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* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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/**
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* This fuzz target attempts to decompress the fuzzed data with the simple
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* decompression function to ensure the decompressor never crashes.
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*/
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "fuzz_helpers.h"
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#include "zstd.h"
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static ZSTD_DCtx *dctx = NULL;
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static void* rBuf = NULL;
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static size_t bufSize = 0;
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int LLVMFuzzerTestOneInput(const uint8_t *src, size_t size)
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{
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size_t const neededBufSize = MAX(20 * size, (size_t)256 << 10);
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/* Allocate all buffers and contexts if not already allocated */
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if (neededBufSize > bufSize) {
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free(rBuf);
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rBuf = malloc(neededBufSize);
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bufSize = neededBufSize;
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FUZZ_ASSERT(rBuf);
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}
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if (!dctx) {
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dctx = ZSTD_createDCtx();
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FUZZ_ASSERT(dctx);
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}
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ZSTD_decompressDCtx(dctx, rBuf, neededBufSize, src, size);
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#ifndef STATEFULL_FUZZING
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ZSTD_freeDCtx(dctx); dctx = NULL;
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#endif
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return 0;
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}
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