Rename zippy_*_fuzzer.cc -> snappy_*_fuzzer.cc.

PiperOrigin-RevId: 264321311

snappy_compress_fuzzer.cc

@@ -0,0 +1,57 @@
+// 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.
+
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <string>
+
+#include "snappy.h"
+
+// Entry point for LibFuzzer.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  std::string input(reinterpret_cast<const char*>(data), size);
+
+  std::string compressed;
+  size_t compressed_size =
+      snappy::Compress(input.data(), input.size(), &compressed);
+
+  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);
+
+  assert(uncompress_succeeded);
+  assert(input == uncompressed_after_compress);
+  return 0;
+}