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 "SkCanvas.h"
6#include "SkFlattenableSerialization.h"
7#include "SkImageFilter.h"
8#include "SkOSFile.h"
9#include "SkString.h"
10
11#include <stdio.h>
12
13static const int kBitmapSize = 24;
14
15static bool read_test_case(const char* filename, SkString* testdata) {
16  FILE* file = sk_fopen(filename, kRead_SkFILE_Flag);
17  if (!file) {
18    SkDebugf("couldn't open file %s\n", filename);
19    return false;
20  }
21  size_t len = sk_fgetsize(file);
22  if (!len) {
23    SkDebugf("couldn't read file %s\n", filename);
24    return false;
25  }
26  testdata->resize(len);
27  (void) fread(testdata->writable_str(), len, file);
28  return true;
29}
30
31static void run_test_case(const SkString& testdata, const SkBitmap& bitmap,
32                          SkCanvas* canvas) {
33  // This call shouldn't crash or cause ASAN to flag any memory issues
34  // If nothing bad happens within this call, everything is fine
35  sk_sp<SkImageFilter> flattenable = SkValidatingDeserializeImageFilter(testdata.c_str(),
36                                                                        testdata.size());
37
38  // Adding some info, but the test passed if we got here without any trouble
39  if (flattenable != nullptr) {
40    SkDebugf("Valid stream detected.\n");
41    // Let's see if using the filters can cause any trouble...
42    SkPaint paint;
43    paint.setImageFilter(flattenable);
44    canvas->save();
45    canvas->clipRect(SkRect::MakeXYWH(
46        0, 0, SkIntToScalar(kBitmapSize), SkIntToScalar(kBitmapSize)));
47
48    // This call shouldn't crash or cause ASAN to flag any memory issues
49    // If nothing bad happens within this call, everything is fine
50    canvas->drawBitmap(bitmap, 0, 0, &paint);
51
52    SkDebugf("Filter DAG rendered successfully.\n");
53    canvas->restore();
54  } else {
55    SkDebugf("Invalid stream detected.\n");
56  }
57}
58
59static bool read_and_run_test_case(const char* filename, const SkBitmap& bitmap,
60                        SkCanvas* canvas) {
61  SkString testdata;
62  SkDebugf("Test case: %s\n", filename);
63  // read_test_case will print a useful error message if it fails.
64  if (!read_test_case(filename, &testdata))
65    return false;
66  run_test_case(testdata, bitmap, canvas);
67  return true;
68}
69
70int main(int argc, char** argv) {
71  int ret = 0;
72  SkBitmap bitmap;
73  bitmap.allocN32Pixels(kBitmapSize, kBitmapSize);
74  SkCanvas canvas(bitmap);
75  canvas.clear(0x00000000);
76  for (int i = 1; i < argc; i++)
77    if (!read_and_run_test_case(argv[i], bitmap, &canvas))
78      ret = 2;
79  // Cluster-Fuzz likes "#EOF" as the last line of output to help distinguish
80  // successful runs from crashes.
81  SkDebugf("#EOF\n");
82  return ret;
83}
84