testing/libfuzzer/pdf_css_fuzzer.cc

// Copyright 2016 The PDFium 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 <memory>

#include "core/fxcrt/cfx_seekablestreamproxy.h"
#include "core/fxcrt/css/cfx_css.h"
#include "core/fxcrt/css/cfx_csssyntaxparser.h"
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/retain_ptr.h"

extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
  WideString input =
      WideString::FromUTF8(ByteStringView(data, static_cast<size_t>(size)));

  // If we convert the input into an empty string bail out.
  if (input.GetLength() == 0)
    return 0;

  CFX_CSSSyntaxParser parser(input.c_str(), input.GetLength());
  CFX_CSSSyntaxStatus status;
  do {
    status = parser.DoSyntaxParse();
  } while (status != CFX_CSSSyntaxStatus::Error &&
           status != CFX_CSSSyntaxStatus::EOS);
  return 0;
}