77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
// Copyright 2016 The PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef TESTING_LIBFUZZER_XFA_CODEC_FUZZER_H_
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#define TESTING_LIBFUZZER_XFA_CODEC_FUZZER_H_
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#include <memory>
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#include "core/fxcodec/codec/ccodec_bmpmodule.h"
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#include "core/fxcodec/codec/ccodec_gifmodule.h"
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#include "core/fxcodec/codec/ccodec_pngmodule.h"
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#include "core/fxcodec/codec/ccodec_progressivedecoder.h"
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#include "core/fxcodec/codec/ccodec_tiffmodule.h"
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#include "core/fxcodec/fx_codec.h"
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#include "core/fxcrt/fx_stream.h"
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#include "third_party/base/ptr_util.h"
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class XFACodecFuzzer {
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public:
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static int Fuzz(const uint8_t* data, size_t size, FXCODEC_IMAGE_TYPE type) {
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auto mgr = pdfium::MakeUnique<CCodec_ModuleMgr>();
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mgr->SetBmpModule(pdfium::MakeUnique<CCodec_BmpModule>());
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mgr->SetGifModule(pdfium::MakeUnique<CCodec_GifModule>());
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mgr->SetPngModule(pdfium::MakeUnique<CCodec_PngModule>());
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mgr->SetTiffModule(pdfium::MakeUnique<CCodec_TiffModule>());
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std::unique_ptr<CCodec_ProgressiveDecoder> decoder =
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mgr->CreateProgressiveDecoder();
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CFX_RetainPtr<Reader> source(new Reader(data, size));
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FXCODEC_STATUS status = decoder->LoadImageInfo(source, type, nullptr, true);
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if (status != FXCODEC_STATUS_FRAME_READY)
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return 0;
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std::unique_ptr<CFX_DIBitmap> bitmap(new CFX_DIBitmap);
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bitmap->Create(decoder->GetWidth(), decoder->GetHeight(), FXDIB_Argb);
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int32_t frames;
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if (decoder->GetFrames(frames) != FXCODEC_STATUS_DECODE_READY ||
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frames == 0)
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return 0;
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status = decoder->StartDecode(bitmap.get(), 0, 0, bitmap->GetWidth(),
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bitmap->GetHeight());
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while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE)
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status = decoder->ContinueDecode();
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return 0;
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}
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private:
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class Reader : public IFX_SeekableReadStream {
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public:
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Reader(const uint8_t* data, size_t size) : m_data(data), m_size(size) {}
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~Reader() {}
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bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override {
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if (offset < 0 || static_cast<size_t>(offset) >= m_size)
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return false;
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if (offset + size > m_size)
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size = m_size - offset;
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if (size == 0)
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return false;
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memcpy(buffer, m_data + offset, size);
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return true;
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}
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FX_FILESIZE GetSize() override { return static_cast<FX_FILESIZE>(m_size); }
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private:
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const uint8_t* const m_data;
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size_t m_size;
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};
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};
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#endif // TESTING_LIBFUZZER_XFA_CODEC_FUZZER_H_
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