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- // Copyright 2016 The Chromium 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 <stddef.h>
- #include <stdint.h>
- #include <string>
- #include <fuzzer/FuzzedDataProvider.h>
- #include "base/strings/utf_string_conversions.h"
- #include "third_party/hunspell/fuzz/hunspell_fuzzer_hunspell_dictionary.h"
- #include "third_party/hunspell/src/hunspell/hunspell.hxx"
- // Entry point for LibFuzzer.
- extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
- if (!size)
- return 0;
- // Generate and use a range of dictionary sizes. Large dictionaries might have
- // more coverage and uncover more interesting code paths, however, it is
- // extremely slow. Smaller dictionaries are _much_ faster, but may result in
- // less coverage.
- FuzzedDataProvider data_provider(data, size);
- size_t shift = data_provider.ConsumeIntegralInRange(0, 16);
- static Hunspell* hunspell =
- new Hunspell(kHunspellDictionary, sizeof(kHunspellDictionary) >> shift);
- std::string data_string(reinterpret_cast<const char*>(data), size);
- // hunspell is not handling invalid UTF8. To avoid that, do the same thing
- // Chromium does - convert to UTF16, and back to UTF8. Valid UTF8 guaranteed.
- std::u16string utf16_string = base::UTF8ToUTF16(data_string);
- data_string = base::UTF16ToUTF8(utf16_string);
- std::vector<std::string> suggestions = hunspell->suggest(data_string);
- return 0;
- }
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