1 /*
2 * Copyright 2018 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
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkPaint.h"
11 #include "include/core/SkSurface.h"
12 #include "src/core/SkRegionPriv.h"
13
FuzzRegionDeserialize(const uint8_t * data,size_t size)14 bool FuzzRegionDeserialize(const uint8_t *data, size_t size) {
15 SkRegion region;
16 if (!region.readFromMemory(data, size)) {
17 return false;
18 }
19 region.computeRegionComplexity();
20 region.isComplex();
21 SkRegion r2;
22 if (region == r2) {
23 region.contains(0,0);
24 } else {
25 region.contains(1,1);
26 }
27 auto s = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(128, 128));
28 if (!s) {
29 // May return nullptr in memory-constrained fuzzing environments
30 return false;
31 }
32 s->getCanvas()->drawRegion(region, SkPaint());
33 SkDEBUGCODE(SkRegionPriv::Validate(region));
34 return true;
35 }
36
37 #if defined(SK_BUILD_FOR_LIBFUZZER)
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)38 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
39 if (size > 512) {
40 return 0;
41 }
42 FuzzRegionDeserialize(data, size);
43 return 0;
44 }
45 #endif
46