// Copyright 2013 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "SkCanvas.h" #include "SkFlattenableSerialization.h" #include "SkImageFilter.h" #include "SkOSFile.h" #include "SkString.h" static const int kBitmapSize = 24; static bool read_test_case(const char* filename, SkString* testdata) { FILE* file = sk_fopen(filename, kRead_SkFILE_Flag); if (!file) { SkDebugf("couldn't open file %s\n", filename); return false; } size_t len = sk_fgetsize(file); if (!len) { SkDebugf("couldn't read file %s\n", filename); return false; } testdata->resize(len); (void) sk_fread(testdata->writable_str(), len, file); return true; } static void run_test_case(const SkString& testdata, const SkBitmap& bitmap, SkCanvas* canvas) { // This call shouldn't crash or cause ASAN to flag any memory issues // If nothing bad happens within this call, everything is fine sk_sp<SkImageFilter> flattenable = SkValidatingDeserializeImageFilter(testdata.c_str(), testdata.size()); // Adding some info, but the test passed if we got here without any trouble if (flattenable != nullptr) { SkDebugf("Valid stream detected.\n"); // Let's see if using the filters can cause any trouble... SkPaint paint; paint.setImageFilter(flattenable); canvas->save(); canvas->clipRect(SkRect::MakeXYWH( 0, 0, SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize))); // This call shouldn't crash or cause ASAN to flag any memory issues // If nothing bad happens within this call, everything is fine canvas->drawBitmap(bitmap, 0, 0, &paint); SkDebugf("Filter DAG rendered successfully.\n"); canvas->restore(); } else { SkDebugf("Invalid stream detected.\n"); } } static bool read_and_run_test_case(const char* filename, const SkBitmap& bitmap, SkCanvas* canvas) { SkString testdata; SkDebugf("Test case: %s\n", filename); // read_test_case will print a useful error message if it fails. if (!read_test_case(filename, &testdata)) return false; run_test_case(testdata, bitmap, canvas); return true; } int main(int argc, char** argv) { int ret = 0; SkBitmap bitmap; bitmap.allocN32Pixels(kBitmapSize, kBitmapSize); SkCanvas canvas(bitmap); canvas.clear(0x00000000); for (int i = 1; i < argc; i++) if (!read_and_run_test_case(argv[i], bitmap, &canvas)) ret = 2; // Cluster-Fuzz likes "#EOF" as the last line of output to help distinguish // successful runs from crashes. SkDebugf("#EOF\n"); return ret; }