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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 |
| 8 #include "SkBitmap.h" |
| 9 #include "SkCanvas.h" |
| 10 #include "SkForceLinking.h" |
| 11 #include "SkImageDecoder.h" |
| 12 #include "SkImageInfo.h" |
| 13 #include "SkSurface.h" |
| 14 #include "Test.h" |
| 15 |
| 16 // A 20x1 image with 8 bits per pixel and a palette size of 2. Pixel values are
255, 254... Run |
| 17 // this test with ASAN to make sure we don't try to access before/after any pale
tte-sized buffers. |
| 18 unsigned char gPng[] = { |
| 19 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, |
| 20 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x01, |
| 21 0x08, 0x03, 0x00, 0x00, 0x00, 0xe9, 0x4c, 0x7e, 0x17, 0x00, 0x00, 0x00, |
| 22 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, |
| 23 0x1c, 0x00, 0x0f, 0x01, 0xb9, 0x8f, 0x00, 0x00, 0x00, 0x06, 0x50, 0x4c, |
| 24 0x54, 0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa5, 0x67, 0xb9, 0xcf, |
| 25 0x00, 0x00, 0x00, 0x20, 0x49, 0x44, 0x41, 0x54, 0x78, 0xda, 0xed, 0xfd, |
| 26 0x07, 0x01, 0x00, 0x20, 0x08, 0x00, 0x41, 0xbc, 0x5b, 0xe8, 0xdf, 0x97, |
| 27 0x99, 0xe3, 0x92, 0xa0, 0xf2, 0xdf, 0x3d, 0x7b, 0x0d, 0xda, 0x04, 0x1c, |
| 28 0x03, 0xad, 0x00, 0x38, 0x5c, 0x2e, 0xad, 0x12, 0x00, 0x00, 0x00, 0x00, |
| 29 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82 |
| 30 }; |
| 31 |
| 32 DEF_TEST(IndexedPngOverflow, reporter) { |
| 33 SkBitmap image; |
| 34 SkForceLinking(false); |
| 35 bool success = SkImageDecoder::DecodeMemory( |
| 36 gPng, sizeof(gPng), &image, SkColorType::kUnknown_SkColorType, |
| 37 SkImageDecoder::kDecodePixels_Mode); |
| 38 REPORTER_ASSERT(reporter, success); |
| 39 |
| 40 SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(SkImageInfo::MakeN32Pre
mul(20, 1))); |
| 41 SkCanvas* canvas = surface->getCanvas(); |
| 42 SkRect destRect = SkRect::MakeXYWH(0, 0, 20, 1); |
| 43 canvas->drawBitmapRect(image, destRect, NULL); |
| 44 } |
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