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Unified Diff: tests/IndexedPngOverflowTest.cpp

Issue 948163002: Indexed PNG decoding: Ensure color table is large enough that the bit depth of the image will not a… (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Fixed argument order in some conditional Android code. Created 5 years, 9 months ago
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Index: tests/IndexedPngOverflowTest.cpp
diff --git a/tests/IndexedPngOverflowTest.cpp b/tests/IndexedPngOverflowTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..914053a3ac70e6f1640fa1111bdbb00e8aa14b63
--- /dev/null
+++ b/tests/IndexedPngOverflowTest.cpp
@@ -0,0 +1,44 @@
+/*
+ * 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 "SkBitmap.h"
+#include "SkCanvas.h"
+#include "SkForceLinking.h"
+#include "SkImageDecoder.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;
+ SkForceLinking(false);
+ bool success = SkImageDecoder::DecodeMemory(
+ gPng, sizeof(gPng), &image, SkColorType::kUnknown_SkColorType,
+ SkImageDecoder::kDecodePixels_Mode);
+ REPORTER_ASSERT(reporter, success);
+
+ SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(SkImageInfo::MakeN32Premul(20, 1)));
+ SkCanvas* canvas = surface->getCanvas();
+ SkRect destRect = SkRect::MakeXYWH(0, 0, 20, 1);
+ canvas->drawBitmapRect(image, destRect, NULL);
+}
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