| // Copyright 2019 Google Inc. All Rights Reserved. | |
| // | |
| // Redistribution and use in source and binary forms, with or without | |
| // modification, are permitted provided that the following conditions are | |
| // met: | |
| // | |
| // * Redistributions of source code must retain the above copyright | |
| // notice, this list of conditions and the following disclaimer. | |
| // * Redistributions in binary form must reproduce the above | |
| // copyright notice, this list of conditions and the following disclaimer | |
| // in the documentation and/or other materials provided with the | |
| // distribution. | |
| // * Neither the name of Google Inc. nor the names of its | |
| // contributors may be used to endorse or promote products derived from | |
| // this software without specific prior written permission. | |
| // | |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| // | |
| // libFuzzer harness for fuzzing snappy compression code. | |
| // Entry point for LibFuzzer. | |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { | |
| std::string input(reinterpret_cast<const char*>(data), size); | |
| for (int level = snappy::CompressionOptions::MinCompressionLevel(); | |
| level <= snappy::CompressionOptions::MaxCompressionLevel(); ++level) { | |
| std::string compressed; | |
| size_t compressed_size = | |
| snappy::Compress(input.data(), input.size(), &compressed, | |
| snappy::CompressionOptions{/*level=*/level}); | |
| (void)compressed_size; // Variable only used in debug builds. | |
| assert(compressed_size == compressed.size()); | |
| assert(compressed.size() <= snappy::MaxCompressedLength(input.size())); | |
| assert( | |
| snappy::IsValidCompressedBuffer(compressed.data(), compressed.size())); | |
| std::string uncompressed_after_compress; | |
| bool uncompress_succeeded = snappy::Uncompress( | |
| compressed.data(), compressed.size(), &uncompressed_after_compress); | |
| (void)uncompress_succeeded; // Variable only used in debug builds. | |
| assert(uncompress_succeeded); | |
| assert(input == uncompressed_after_compress); | |
| } | |
| return 0; | |
| } | |