| // Copyright 2021 The PDFium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <fuzzer/FuzzedDataProvider.h> |
| |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "core/fpdfapi/font/cpdf_tounicodemap.h" |
| #include "core/fpdfapi/parser/cpdf_stream.h" |
| #include "core/fxcrt/retain_ptr.h" |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| static constexpr size_t kParameterSize = sizeof(uint32_t) + sizeof(wchar_t); |
| if (size <= kParameterSize) |
| return 0; |
| |
| // Limit data size to prevent fuzzer timeout. |
| static constexpr size_t kMaxDataSize = 256 * 1024; |
| if (size > kParameterSize + kMaxDataSize) |
| return 0; |
| |
| FuzzedDataProvider data_provider(data, size); |
| uint32_t charcode_to_lookup = data_provider.ConsumeIntegral<uint32_t>(); |
| wchar_t char_for_reverse_lookup = data_provider.ConsumeIntegral<wchar_t>(); |
| |
| std::vector<uint8_t> remaining = |
| data_provider.ConsumeRemainingBytes<uint8_t>(); |
| auto stream = pdfium::MakeRetain<CPDF_Stream>(remaining); |
| |
| auto to_unicode_map = std::make_unique<CPDF_ToUnicodeMap>(std::move(stream)); |
| to_unicode_map->Lookup(charcode_to_lookup); |
| to_unicode_map->ReverseLookup(char_for_reverse_lookup); |
| return 0; |
| } |