/*
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* Copyright 2018 Google Inc.
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*
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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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*/
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#include "SkBitmap.h"
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#include "SkCanvas.h"
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#include "SkData.h"
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#include "SkFontMgrPriv.h"
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#include "SkImageFilter.h"
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#include "SkPaint.h"
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#include "SkTestFontMgr.h"
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void FuzzImageFilterDeserialize(sk_sp<SkData> bytes) {
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const int BitmapSize = 24;
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SkBitmap bitmap;
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bitmap.allocN32Pixels(BitmapSize, BitmapSize);
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SkCanvas canvas(bitmap);
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canvas.clear(0x00000000);
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auto flattenable = SkImageFilter::Deserialize(bytes->data(), bytes->size());
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if (flattenable != nullptr) {
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// Let's see if using the filters can cause any trouble...
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SkPaint paint;
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paint.setImageFilter(flattenable);
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canvas.save();
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canvas.clipRect(SkRect::MakeXYWH(
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0, 0, SkIntToScalar(BitmapSize), SkIntToScalar(BitmapSize)));
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// This call shouldn't crash or cause ASAN to flag any memory issues
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// If nothing bad happens within this call, everything is fine
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canvas.drawBitmap(bitmap, 0, 0, &paint);
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canvas.restore();
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}
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}
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#if defined(IS_FUZZING_WITH_LIBFUZZER)
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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gSkFontMgr_DefaultFactory = &sk_tool_utils::MakePortableFontMgr;
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auto bytes = SkData::MakeWithoutCopy(data, size);
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FuzzImageFilterDeserialize(bytes);
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return 0;
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}
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#endif
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