testing/fuzzers/pdf_css_fuzzer.cc

// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

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

extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
  // SAFETY: required from fuzzer.
  WideString input = WideString::FromUTF8(
      UNSAFE_BUFFERS(ByteStringView(data, static_cast<size_t>(size))));

  // If we convert the input into an empty string bail out.
  if (input.IsEmpty()) {
    return 0;
  }

  CFX_CSSSyntaxParser parser(input.AsStringView());
  CFX_CSSSyntaxParser::Status status;
  do {
    status = parser.DoSyntaxParse();
  } while (status != CFX_CSSSyntaxParser::Status::kError &&
           status != CFX_CSSSyntaxParser::Status::kEOS);
  return 0;
}