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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
commite6918187568dbd01842d8d1d2c808ce16a894239 (patch)
tree64f88b554b444a49f656b6c656111a145cbbaa28 /src/zstd/tests/fuzz/simple_compress.c
parentInitial commit. (diff)
downloadceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz
ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/zstd/tests/fuzz/simple_compress.c')
-rw-r--r--src/zstd/tests/fuzz/simple_compress.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/src/zstd/tests/fuzz/simple_compress.c b/src/zstd/tests/fuzz/simple_compress.c
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+++ b/src/zstd/tests/fuzz/simple_compress.c
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+/*
+ * 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_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);
+ ZSTD_compressCCtx(cctx, rBuf, bufSize, src, size, cLevel);
+ free(rBuf);
+ FUZZ_dataProducer_free(producer);
+#ifndef STATEFUL_FUZZING
+ ZSTD_freeCCtx(cctx); cctx = NULL;
+#endif
+ return 0;
+}