IndexedPngOverflowTest.cpp 1.7 KB

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  1. /*
  2. * Copyright 2015 Google Inc.
  3. *
  4. * Use of this source code is governed by a BSD-style license that can be
  5. * found in the LICENSE file.
  6. */
  7. #include "include/core/SkBitmap.h"
  8. #include "include/core/SkCanvas.h"
  9. #include "include/core/SkImageInfo.h"
  10. #include "include/core/SkSurface.h"
  11. #include "tests/CodecPriv.h"
  12. #include "tests/Test.h"
  13. // A 20x1 image with 8 bits per pixel and a palette size of 2. Pixel values are 255, 254... Run
  14. // this test with ASAN to make sure we don't try to access before/after any palette-sized buffers.
  15. unsigned char gPng[] = {
  16. 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,
  17. 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x01,
  18. 0x08, 0x03, 0x00, 0x00, 0x00, 0xe9, 0x4c, 0x7e, 0x17, 0x00, 0x00, 0x00,
  19. 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00,
  20. 0x1c, 0x00, 0x0f, 0x01, 0xb9, 0x8f, 0x00, 0x00, 0x00, 0x06, 0x50, 0x4c,
  21. 0x54, 0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa5, 0x67, 0xb9, 0xcf,
  22. 0x00, 0x00, 0x00, 0x20, 0x49, 0x44, 0x41, 0x54, 0x78, 0xda, 0xed, 0xfd,
  23. 0x07, 0x01, 0x00, 0x20, 0x08, 0x00, 0x41, 0xbc, 0x5b, 0xe8, 0xdf, 0x97,
  24. 0x99, 0xe3, 0x92, 0xa0, 0xf2, 0xdf, 0x3d, 0x7b, 0x0d, 0xda, 0x04, 0x1c,
  25. 0x03, 0xad, 0x00, 0x38, 0x5c, 0x2e, 0xad, 0x12, 0x00, 0x00, 0x00, 0x00,
  26. 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82
  27. };
  28. DEF_TEST(IndexedPngOverflow, reporter) {
  29. SkBitmap image;
  30. bool success = decode_memory(gPng, sizeof(gPng), &image);
  31. REPORTER_ASSERT(reporter, success);
  32. auto surface(SkSurface::MakeRaster(SkImageInfo::MakeN32Premul(20, 1)));
  33. SkCanvas* canvas = surface->getCanvas();
  34. SkRect destRect = SkRect::MakeXYWH(0, 0, 20, 1);
  35. canvas->drawBitmapRect(image, destRect, nullptr);
  36. }