diff options
Diffstat (limited to 'fuzz/oss_fuzz/FuzzImageFilterDeserialize.cpp')
-rw-r--r-- | fuzz/oss_fuzz/FuzzImageFilterDeserialize.cpp | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/fuzz/oss_fuzz/FuzzImageFilterDeserialize.cpp b/fuzz/oss_fuzz/FuzzImageFilterDeserialize.cpp new file mode 100644 index 0000000000..f9d9598892 --- /dev/null +++ b/fuzz/oss_fuzz/FuzzImageFilterDeserialize.cpp @@ -0,0 +1,46 @@ +/* + * Copyright 2018 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + + +#include "SkBitmap.h" +#include "SkCanvas.h" +#include "SkData.h" +#include "SkImageFilter.h" +#include "SkPaint.h" + +void FuzzImageFilterDeserialize(sk_sp<SkData> bytes) { + const int BitmapSize = 24; + SkBitmap bitmap; + bitmap.allocN32Pixels(BitmapSize, BitmapSize); + SkCanvas canvas(bitmap); + canvas.clear(0x00000000); + + auto flattenable = SkImageFilter::Deserialize(bytes->data(), bytes->size()); + + if (flattenable != nullptr) { + // Let's see if using the filters can cause any trouble... + SkPaint paint; + paint.setImageFilter(flattenable); + canvas.save(); + canvas.clipRect(SkRect::MakeXYWH( + 0, 0, SkIntToScalar(BitmapSize), SkIntToScalar(BitmapSize))); + + // This call shouldn't crash or cause ASAN to flag any memory issues + // If nothing bad happens within this call, everything is fine + canvas.drawBitmap(bitmap, 0, 0, &paint); + + canvas.restore(); + } +} + +#if defined(IS_FUZZING_WITH_LIBFUZZER) +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + auto bytes = SkData::MakeWithoutCopy(data, size); + FuzzImageFilterDeserialize(bytes); + return 0; +} +#endif |