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