1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/files/file_util.h" 6 #include "base/logging.h" 7 #include "third_party/skia/include/core/SkCanvas.h" 8 #include "third_party/skia/include/core/SkFlattenableSerialization.h" 9 #include "third_party/skia/include/core/SkImageFilter.h" 10 11 namespace { 12 13 static const int BitmapSize = 24; 14 15 bool ReadTestCase(const char* filename, std::string* ipc_filter_message) { 16 base::FilePath filepath = base::FilePath::FromUTF8Unsafe(filename); 17 18 if (!base::ReadFileToString(filepath, ipc_filter_message)) { 19 LOG(ERROR) << filename << ": couldn't read file."; 20 return false; 21 } 22 23 return true; 24 } 25 26 void RunTestCase(std::string& ipc_filter_message, SkBitmap& bitmap, 27 SkCanvas* canvas) { 28 // This call shouldn't crash or cause ASAN to flag any memory issues 29 // If nothing bad happens within this call, everything is fine 30 SkFlattenable* flattenable = SkValidatingDeserializeFlattenable( 31 ipc_filter_message.c_str(), ipc_filter_message.size(), 32 SkImageFilter::GetFlattenableType()); 33 34 // Adding some info, but the test passed if we got here without any trouble 35 if (flattenable != NULL) { 36 LOG(INFO) << "Valid stream detected."; 37 // Let's see if using the filters can cause any trouble... 38 SkPaint paint; 39 paint.setImageFilter(static_cast<SkImageFilter*>(flattenable))->unref(); 40 canvas->save(); 41 canvas->clipRect(SkRect::MakeXYWH( 42 0, 0, SkIntToScalar(BitmapSize), SkIntToScalar(BitmapSize))); 43 44 // This call shouldn't crash or cause ASAN to flag any memory issues 45 // If nothing bad happens within this call, everything is fine 46 canvas->drawBitmap(bitmap, 0, 0, &paint); 47 48 LOG(INFO) << "Filter DAG rendered successfully"; 49 canvas->restore(); 50 } else { 51 LOG(INFO) << "Invalid stream detected."; 52 } 53 } 54 55 bool ReadAndRunTestCase(const char* filename, SkBitmap& bitmap, 56 SkCanvas* canvas) { 57 std::string ipc_filter_message; 58 59 LOG(INFO) << "Test case: " << filename; 60 61 // ReadTestCase will print a useful error message if it fails. 62 if (!ReadTestCase(filename, &ipc_filter_message)) 63 return false; 64 65 RunTestCase(ipc_filter_message, bitmap, canvas); 66 67 return true; 68 } 69 70 } 71 72 int main(int argc, char** argv) { 73 int ret = 0; 74 75 SkBitmap bitmap; 76 bitmap.allocN32Pixels(BitmapSize, BitmapSize); 77 SkCanvas canvas(bitmap); 78 canvas.clear(0x00000000); 79 80 for (int i = 1; i < argc; i++) 81 if (!ReadAndRunTestCase(argv[i], bitmap, &canvas)) 82 ret = 2; 83 84 // Cluster-Fuzz likes "#EOF" as the last line of output to help distinguish 85 // successful runs from crashes. 86 printf("#EOF\n"); 87 88 return ret; 89 } 90 91
