| // Copyright 2019 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <string> |
| #include <vector> |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <base/files/file_path.h> |
| #include <base/files/file_util.h> |
| #include <base/files/scoped_temp_dir.h> |
| #include <base/logging.h> |
| |
| #include "vm_tools/garcon/mime_types_parser.h" |
| |
| class Environment { |
| public: |
| Environment() { |
| // Disable logging. |
| logging::SetMinLogLevel(logging::LOGGING_FATAL); |
| // Setup temp dir for writing out the mime types file to parse. |
| CHECK(temp_dir_.CreateUniqueTempDir()); |
| } |
| |
| base::ScopedTempDir temp_dir_; |
| }; |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| static Environment env; |
| |
| // 100KB max input size. The parser isn't designed for high efficiency and |
| // it can end up timing out on larger input sizes that have lots of |
| // whitespace. |
| constexpr int kMaxInputSize = 102400; |
| if (size > kMaxInputSize) |
| return 0; |
| |
| // The filename has no impact on this function's execution. |
| base::FilePath file_path(env.temp_dir_.GetPath().Append("mime_types")); |
| base::WriteFile(file_path, reinterpret_cast<const char*>(data), size); |
| |
| vm_tools::garcon::MimeTypeMap map; |
| vm_tools::garcon::ParseMimeTypes(file_path.value(), &map); |
| |
| return 0; |
| } |