| dml | 78acf96 | 2015-03-18 06:03:29 -0700 | [diff] [blame] | 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 palette-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::MakeN32Premul(20, 1))); |
| 41 | SkCanvas* canvas = surface->getCanvas(); |
| 42 | SkRect destRect = SkRect::MakeXYWH(0, 0, 20, 1); |
| 43 | canvas->drawBitmapRect(image, destRect, NULL); |
| 44 | } |