pdf_codec_fax_fuzzer.cc revision 4d3acf4ec42bf6e838f9060103aff98fbf170794 
1// Copyright 2016 The PDFium 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 <cstdint>
6#include <memory>
7
8#include "core/fxcodec/codec/ccodec_faxmodule.h"
9#include "core/fxcodec/codec/ccodec_scanlinedecoder.h"
10
11static int GetInteger(const uint8_t* data) {
12  return data[0] | data[1] << 8 | data[2] << 16 | data[3] << 24;
13}
14
15extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
16  const int kParameterSize = 21;
17  if (size < kParameterSize)
18    return 0;
19
20  int width = GetInteger(data);
21  int height = GetInteger(data + 4);
22  int K = GetInteger(data + 8);
23  int Columns = GetInteger(data + 12);
24  int Rows = GetInteger(data + 16);
25  bool EndOfLine = !(data[20] & 0x01);
26  bool ByteAlign = !(data[20] & 0x02);
27  bool BlackIs1 = !(data[20] & 0x04);
28  data += kParameterSize;
29  size -= kParameterSize;
30
31  CCodec_FaxModule fax_module;
32  std::unique_ptr<CCodec_ScanlineDecoder> decoder(
33      fax_module.CreateDecoder(data, size, width, height, K, EndOfLine,
34                               ByteAlign, BlackIs1, Columns, Rows));
35
36  if (decoder) {
37    int line = 0;
38    while (decoder->GetScanline(line))
39      line++;
40  }
41
42  return 0;
43}
44