mirror of https://github.com/google/snappy.git
66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
// Copyright 2019 Google Inc. All Rights Reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// libFuzzer harness for fuzzing snappy decompression routine.
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#include <cassert>
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#include <cstddef>
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#include <cstdint>
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#include <string>
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#include "snappy.h"
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namespace snappy {
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// Supplies random data sourced from libFuzzer to the snappy uncompressor,
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// decompressing its output and running some checks in the process.
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
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{
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string input(reinterpret_cast<const char*>(data), size);
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size_t uncompressed_len = 0;
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bool getcomp_len_success = snappy::GetUncompressedLength(
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input.data(),
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input.size(),
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&uncompressed_len);
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// Check that GetUncompressedLength() does not return a very large
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// value (1 MB) on success.
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assert(!getcomp_len_success || uncompressed_len < (1 << 20));
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// Uncompress
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string uncompressed_out;
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bool uncompress_success = snappy::Uncompress(
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input.data(),
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input.size(),
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&uncompressed_out);
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assert(uncompress_success);
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return 0;
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}
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} // namespace snappy
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