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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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